KR100983885B1 - Method and Apparatus for Operating Message for Network Discovery - Google Patents

Abstract

Message operating method for network entry according to an aspect of the present invention that can efficiently operate the messages for network discovery of the terminal within the broadcast period of the periodic service identity information (SII) -ADV message, Network Service Determining a frame period in which an SBC (SS Basic Capability) -REQ message including a provider list request information is received; If the SBC-REQ message is received within a first frame period, broadcasting the NSP list by including the NSP list in the SII-ADV message; And if the SBC-REQ message is received within a second frame period, including the NSP list in an SBC-RSP message that is a response message to the SBC-REQ message.

Network Discovery, SII-ADV, NSP, NAP

Description

Method and device for operating a message for network discovery {Method and Apparatus for Operating Message for Network Discovery}

The present invention relates to a wireless communication system, and more particularly to a message operation for network discovery in a wireless communication system.

Recently, in-depth research is being carried out in various layers to realize 4G mobile communication. In the 4th generation mobile communication according to IEEE 802.16d / e, WiBro, WiMAX standard, etc., not only satellite network but also wireless LAN network, digital audio broadcasting and video broadcasting network are integrated into one single network which is organically interworked. In the best condition, you can receive services such as smooth mobile Internet.

In order to receive the portable Internet service in the system for providing the portable Internet service, the terminal performs a network entry procedure. The network entry procedure will be described in detail with reference to FIG. 1. First, a UE discovers a network access provider (NAP) (S100). Here, NAP refers to a business entity that provides a wireless access infrastructure to one or more Network Service Providers (NSPs). The NAP implements such an infrastructure by using one or more Access Service Networks (ASNs). On the other hand, the discovery of NAP means that the UE discovers available NAPs in the detected wireless coverage area.

Next, the terminal finds an NSP (S110). Here, NSP refers to a business entity that provides IP connectivity and portable Internet service to a mobile Internet service subscriber according to a service level agreement established with the subscriber. In order to provide such services, the NSP is connected with one or more NAPs. Contractual agreements, additionally roaming agreements with other NSPs, and contractual agreements with application providers such as Application Service Providers (ASPs) or Internet Service Providers (ISPs). Such NSPs can be classified into home NSPs (H-NSPs) and visited NSPs (V-NSPs) from the perspective of the mobile Internet service subscriber.

The H-NSP is a service level agreement with a mobile Internet service subscriber, which means a business entity that authenticates and authorizes subscriber sessions and performs billing for services. Provide AAA traffic routing to the H-NSP as an NSP for providing mobile Internet services to visiting subscribers, and provide some or all of the mobile Internet services to roaming subscribers in accordance with roaming agreements with the H-NSP and the mobile Internet services requested by the subscriber. Or provide data / control traffic routing to the H-NSP. The discovery of such NSP means that the UE discovers available NSPs in the corresponding area.

Subsequently, based on dynamic information such as the NSP list obtained in the NSP discovery step and previously stored configuration information, the most preferred NSP and the ASN candidate group to be accessed are selected (S120). In step S130, the UE notifies the selection of the NSP by providing its own information during the registration process in the ASN associated with the selected NSP.

The discovery of NSPs in the above procedure is currently carried out through a Service Identity Information (SII) -ADV message or an SS Basic Capability Request (RSC) -RSP message transmitted from a base station according to the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard. It is performed using the NSP List, where the SII-ADV is broadcast periodically and may be broadcasted at the request of the terminal.

First, the SII-ADV message that is periodically broadcast is broadcast in units of 10 to 30 seconds, as shown in FIG. 2A, and the broadcasted SII-ADV message includes NSP list information.

In the case of the SII-ADV message broadcasted by the request of the UE, as shown in FIG. 2B, when the SBC-REQ including the information for requesting the NSP list information is received from the UE, the SII-ADP message is a response to the SBC-RSP message. After transmitting the SII-ADV message pointer TLV indicating the frame to be broadcast to the terminal, the SII-ADV message is broadcast in the frame embodied by the SII-ADV message pointer TLV.

On the other hand, when using the SBC-RSP, as shown in FIG. 2C, when the SBC-REQ including the SIQ TLV is received from the terminal, the NBC list information is directly included in the SBC-RSP message, which is a response thereto, and transmitted to the terminal.

However, if only the SII-ADV message that is periodically broadcasted as shown in FIG. 2A is used for discovery of the NSP, there is a problem that it may take a considerable time to enter the network of the UE, and as shown in FIG. Whenever the SII-ADV message is broadcast, there is a problem in that energy consumption of the terminal may occur because the SII-ADV message must be decoded up to the terminal that does not need to receive the SII-ADV as well as the consumption of radio resources.

In addition, if the SBC-RSP message is directly used as shown in FIG. 2C for the discovery of the NSP, when the SBC-REQs occur in a short time, the NSP list information may be transmitted several times in a similar time period. This problem may be more severe in the case of NSP Sharing, in which one NAP is shared by multiple NSPs.

Disclosure of Invention The present invention has been made in view of the above-described problems, and it is an object of the present invention to provide a method and apparatus for operating a message for network entry that can efficiently operate messages for network discovery of terminals.

 Another object of the present invention is to provide a method and apparatus for operating a message for network entry, which may determine a message operating method for network discovery in consideration of the number of terminals attempting to enter the network.

Message operating method for network entry according to an aspect of the present invention for achieving the above object includes a network service provider (NSP) list request information within the broadcast period of the periodic service identity information (SII) -ADV message Determining a frame period in which an SBC (SS Basic Capability) -REQ message is received; If the SBC-REQ message is received within a first frame period, broadcasting the NSP list by including the NSP list in the SII-ADV message; And if the SBC-REQ message is received within a second frame period, including the NSP list in an SBC-RSP message that is a response message to the SBC-REQ message.

Message operating method for network entry according to another aspect of the present invention for achieving the above object includes the NSP list based on the first SBC-REQ message of the SBC-REQ messages including NSP list request information Determining a broadcast frame of the first SII-ADV message; Calculating a pointer value indicating a broadcast frame of the first SII-ADV message for at least one SBC-REQ message received before the broadcast frame of the first SII-ADV message; Including pointer information including the pointer value in an SBC-RSP message, which is a response to each SBC-REQ message, and transmitting the pointer information to each terminal; And broadcasting the SII-ADV message including the NSP list to each terminal in the broadcast frame of the first SII-ADV message.

In accordance with another aspect of the present invention, an apparatus for operating a message for network entry according to another aspect of the present invention determines a frame section in which an SBC-REQ message including NSP list request information is received within an SII-ADV message broadcast period. Decision unit; A calculator configured to calculate a pointer value indicating a frame on which the SII-ADV message including the NSP list is to be broadcast when the frame section in which the SBC-REQ message is received is a first frame section; Generate an SBC-RSP message that is a response message to the SBC-REQ message, and if the frame period in which the SBC-REQ message is received is a first frame period, pointer information including the pointer value is added to the SBC-REQ message. Generating the SBC-RSP message and including the NSP list in the SBC-RSP message when the frame period in which the SBC-REQ message is received is a second frame period; A message generator; A second message generating unit generating the SII-ADV message including the NSP list when the frame section in which the SBC-REQ message is received is the first frame section; And a message transceiver configured to receive the SBC-REQ message and to transmit the SBC-REQ message and the SII-ADV message to a terminal.

According to still another aspect of the present invention, there is provided a device for operating a network for entering a network according to another aspect of the present invention. A determination unit for determining a first received SBC-REQ message among SBC-REQ messages including NSP list request information ; Determine a broadcast frame of a first SII-ADV message including the NSP list based on the first SBC-REQ message, and at least one SBC-REQ message received before the broadcast frame of the first SII-ADV message; A calculator configured to calculate a pointer value indicating a broadcast frame of the first SII-ADV message for each of the first and second SII-ADV messages; A first message generator configured to generate the SBC-RSP message by including pointer information including the pointer value in an SBC-RSP message which is a response to each SBC-REQ message; A second message generator for generating an SII-ADV message including the NSP list; And a message transceiver configured to receive the SBC-REQ message and to transmit the SBC-RSP message and the first SII-ADV message.

According to the present invention, the NSP list can be provided to the terminal without using an additional SII-ADV message in addition to the periodic SII-ADV message, thereby saving radio resources, and of course, receiving the SII-ADV message. The battery problem can be solved, and when the UE requests the NSP list, the NSP list can be provided immediately, thereby reducing the delay time for entering the network of the UE.

According to the present invention, the SBC-REQ message is processed as one SII-ADV message, but each time the SBC-REQ message is received from each terminal, the terminal determines the transmission time of the SII-ADV, so that the terminal enters the network. In addition, it is possible to shorten the time required for the transmission, and also to transmit additional SII-ADV messages only when a request of the terminal occurs, thereby reducing waste of radio resources and further solving the battery problem of the terminal.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Prior to the detailed description of the present invention, a network reference model to which the present invention can be applied will be briefly described with reference to FIG. 3.

First, FIG. 3A illustrates a network reference model in which one network access provider (NAP) is managed by one network service provider (NSP). As shown, it can be seen that NAP1 310 is managed by NSP1 312 and NAP2 314 is managed by NSP2 316. In one embodiment, the NAP and the NSP may be owned by the same operator, where the ID of the NSP and the ID of the NSP may be the same. Meanwhile, in the network reference model as shown in FIG. 1, an access service network (ASN) is connected to a connection service network (CSN) and a user terminal, where the ASN is operated by the NAP and the CSN is operated by the NSP.

3B is a diagram showing a network reference model when one NAP is managed by a plurality of NSPs, that is, a diagram showing "NAP Sharing" in which one NAP is shared by a plurality of NSPs. As shown, NAP1 318 is shared by NSP1 320 and NSP2 322.

The first and second embodiments of the present invention to be described below are a network reference model to which NAP Sharing is not applied as shown in FIG. 3A and a network reference to which NAP Sharing as shown in FIG. 3B is applied. We present a message operation method and apparatus for network discovery applicable to all models.

First embodiment

The message operating apparatus for network discovery and the message operating method for network discovery according to the first embodiment of the present invention can be applied when the number of terminals requesting network entry is less than or equal to a threshold. First, the present invention will be described with reference to FIG. 4. A message operating device for network discovery according to a first embodiment of the present invention will be described.

4 is a block diagram illustrating a configuration of a message operating apparatus for network discovery according to a first embodiment of the present invention. As shown, the message operation apparatus 400 for network discovery may include a determination unit 410, an operation unit 420, a first message generation unit 430, a second message generation unit 44, and a message transmission / reception unit ( 450, such a device may be included in a base station.

First, the determination unit 410 determines a frame section in which an SBC (SS Basic Capability) -REQ message including NSP list request information is received from the terminal through the message transceiver 440 which will be described later.

In one embodiment, the NSP list request information may be defined as a Service Identity Query (SIQ) TLV (Type, Length, Value), which is one of the TLVs of the SBC-REQ having a structure as shown in FIG. 5A. As shown in FIG. 5B, the SIQ TLV means that the NSP List TLV is requested to the NSP list when the value is 0, and when the value is 1, the NSP List TLV and the Verbose NSP Name List TLV as the NSP list. Means to request. In the following description, it is assumed that the NSP list request information is a SIQ TLV for convenience of description.

As such, the determination unit 410 may determine a message section including the NSP list according to the frame section in which the SBC-REQ message is received by determining the frame section in which the SBC-REQ message including the NSP list request information is received. .

In an embodiment, the first frame period and the second frame period mean frame periods included in a broadcast period of a periodic SII-ADV. As shown in FIG. 6, the first frame period 620 is an SII- A period before the predetermined number of frames from the X frame 620 in the ADV period 600, and the second frame period 630 is a frame excluding the first frame period 620 in the SII-ADV period 600. It means a section. In this case, the position of the X frame 610 may be determined in consideration of the time required for the first message generator 430 to process the SBC-RSP message, which will be described later. For example, if the processing time of the SBC-RSP message is long, the number of X frames will be smaller. For example, the X frame may be determined to be five previous frames from the frame on which the SII-ADV message is broadcast, and the size of the first frame interval may be determined to be in a range larger than zero and smaller than 250.

Referring back to FIG. 4, when the frame section in which the SBC-REQ message is received is the first frame section, the calculation unit 420 determines that the NSP list is a Service Identity Information (SII) -ADV message. A pointer value indicating a frame to which a SII-ADV message is to be broadcast is calculated in order to be provided through the SII-ADV message. In detail, when the SBC-REQ message is received within the first frame period, the operation unit 420 uses the difference between the frame number from which the SBC-REQ message is received and the frame number to which the periodic SII-ADV message is broadcasted. The pointer value for the SBC-REQ message is calculated.

In one embodiment, such a pointer value may be included in pointer information such as an SII-ADV message pointer TLV as shown in FIG. 7A. As shown in FIG. 7A, the SII-ADV message pointer TLV corresponds to 8 bits of the least significant bit (LSB: Least Significant Bit) of the frame number of the frame to which the SII-ADV message including the NSP list is transmitted. It will have a value.

The SII-ADV message pointer TLV is included as one of the TLVs of the SBC-RSP message by the first message generator 430 which will be described later. Hereinafter, it is assumed that the pointer information including the pointer value calculated by the operation unit 420 is an SII-ADV message pointer TLV.

Referring back to FIG. 4, the first message generator 430 generates an SBC-RSP message having a structure as shown in FIG. 7B as a response message to the SBC-REQ message received from the terminal, but the SBC-REQ. If it is determined that the message has been received in the first frame period, the SBC-RSP message is generated by including the SII-ADV message pointer TLV so that the NSP list can be provided through the SII-ADV message. If it is determined that the reception is received in the second frame period, the SSP-RSP message is generated by including the NSP list so that the NSP list can be provided through the SBC-RSP message.

Referring to FIG. 6, the first message generator 430 may include the SII-RSP message 642 in the case of the SBC-REQ message 640 received in the first frame section 620. In the case of the SBC-REQ messages 650 and 660 received in the second frame section 630, including the SII-ADV message pointer TLV indicating the frame on which the ADV message is to be broadcast, the first message generating unit 430 is the SBC. -The RSP messages 652 and 662 will include the NSP list.

Next, the second message generator 440 has a structure as shown in FIG. 7C and generates a SII-ADV message that is broadcast periodically, and generates an SII-ADV message by including an NSP list in the SII-ADV message. do.

In one embodiment, the NSP list to be included in the SBC-RSP message or the SII-ADV message may be defined using at least one of an NSP List TLV and a Verbose NSP Name List TLV, which are TLVs of the SII-ADV. As shown in 7d, the TLV includes the ID of the NSP, and the Verbose NSP Name List TLV is a TLV including the name of the NSP as shown in FIG. 7E.

When the NSP list is included in the SBC-RSP message, the NSP list may be generated by the first message generating unit 430. When the NSP list is included in the SII-ADV message, the NSP list may include the second message generating unit ( 440).

Meanwhile, in the above-described embodiment, the first message generator 430 and the second message generator 440 are described as separate components. However, in the modified embodiment, the first message generator 430 and the first message generator 430 and the second message generator 440 are described. 2 The message generator 440 may be implemented as one component.

Finally, the message transceiver 450 receives an SBC-REQ message including the SIQ TLV, which is NSP list request information, from the terminal, and sends the SBC-RSP and the second generated by the first message generator 430 to the terminal. The SII-ADV message generated by the message generator 440 is transmitted. At this time, the message transmitting and receiving unit 450 is to broadcast the SII-ADV message every predetermined period, for example, the broadcast period of the SII-ADV may be 10 ~ 30 seconds.

As described above, according to the first embodiment, since the NSP list is provided using a different message according to the frame period in which the SBC-REQ message is received, that is, when the SBC-REQ message is received within the first frame period, broadcast is performed periodically. The NSP list is included in the SII-ADV message. When the SBC-REQ message is received within the second frame period, the NSP list is directly included in the SBC-RSP message, which is a response to the received SBC-REQ message. In addition to the periodic SII-ADV message, the additional SII-ADV message is not used to save radio resources, and also to solve a battery problem of the terminal due to the reception of the SII-ADV message, and the terminal requests an NSP list. When the NSP list can be provided immediately, the delay time for entering the network of the terminal can be reduced.

Hereinafter, a method of operating a message for network discovery according to a first embodiment of the present invention will be described with reference to FIG. 8. 8 is a flowchart showing a message operating method for network discovery according to a first embodiment of the present invention.

As shown, first, in the SII-ADV message broadcast period, the frame period in which the SBC-REQ message including the SIQ TLV is received is determined (S800). In more detail, it is determined whether the SBC-REQ message is received within the first frame period or the second frame period within the SII-ADV message broadcast period. The description of the first frame period and the second frame period is described above. Since it was mentioned in detail, a detailed description thereof will be omitted.

As a result of the determination, when the SBC-REQ message is received within the first frame period, a pointer value indicating a frame on which the SII-ADV message is broadcasted is periodically calculated (S810). In this case, the pointer value may be calculated using a difference between a frame number from which the SBC-REQ message is received and a frame number from which the SII-ADV message is broadcast.

Next, the SBC-RSP message including the SII-ADV message pointer TLV including the pointer value calculated in S810 is generated (S820), and the generated SBC-RSP message is transmitted to the terminal generating the SBC-REQ message. (S830). Subsequently, after generating an NSP list including at least one of an NSP List TLV and a Verbose NSP Name List TLV according to the information included in the SIQ TLV (S840), an SII-ADV message including the generated NSP list is generated (S840). In step S850, an SII-ADV message including an NSP list is broadcast to each terminal at predetermined intervals (S860). That is, when the SBC-REQ message is received within the first frame period, the NSP list is included in the broadcasted SII-ADV message and provided to the terminal.

On the other hand, when the determination result in step S800 SBC-REQ message is received within the second frame interval, the NSP list including at least one of the NSP List TLV and Verbose NSP Name List TLV according to the information included in the SIQ TLV is generated (S870). Thereafter, an SBC-RSP message including the generated NSP list is generated (S880), and the generated SBC-RSP message is transmitted to the terminal generating the SBC-REQ message (S890). That is, when the SBC-REQ message is received within the second frame period, the NSP list is included in the SBC-RSP message, which is a response to the SBC-REQ message, to be provided to the terminal.

Second embodiment

The message operating apparatus for network discovery and the message operating method for network discovery according to the second embodiment of the present invention, for example, when the number of terminals requesting network entry is greater than or equal to a threshold, for example, around a theater, a conference hall, The terminal may be applied to an environment in which a plurality of terminals may simultaneously request entry into a network at the same time, such as a meeting room and a convention center.

In the case of the message operating device for network discovery according to the second embodiment, the message operating device for network discovery and its components shown in FIG. For this purpose, the message operating apparatus for network discovery according to the second embodiment will be described with reference to FIG. 4.

First, the determination unit 410 determines whether the SBC-REQ message received from the terminal is the first SBC-REQ message first received among the SBC-REQ messages including the NSP list request information. In one embodiment, the first received SBC-REQ message is the first SBC-REQ message received after the SBC-REQ message or SII-ADV message first received after the message operating device for network discovery is booted. It means any one of the messages. Here, the NSP list request information may be defined as an SIQ TLV as described in the first embodiment, and since the description of the SIQ TLV has been described above, a detailed description thereof will be omitted.

On the other hand, if the received SBC-REQ message is not the first SBC-REQ message, the determination unit 410 broadcast frame of the first SII-ADV message is determined by the operation unit 420 described later (Hereinafter referred to as a 'first frame') and a second SBC-REQ message first received in a section between a threshold frame which is a frame before a predetermined number from the first frame. In this case, the position of the threshold frame may be determined in consideration of the time required for the first message generator 430 to be described later to process the SBC-RSP message. For example, the threshold frame may be determined to be five previous frames from the first frame.

As such, the determining unit 410 separately determines whether the received SBC-REQ message is the first received message among the SBC-REQ messages received in the interval between the first frame and the threshold frame. In case of the SBC-REQ message received from, the UE may not provide the NSP list requested by the UE through the SII-ADV message to be broadcast in the first frame, considering the time to process the SBC-RSP message for the corresponding SBC-REQ message. In this case, the frame is to determine a frame for providing the SII-ADV message based on the second SBC-REQ message.

9, the first received SBC-REQ message 900 of the plurality of SBC-REQ messages 900, 910, and 920 becomes the first SBC-REQ message, and the first frame 930. ) And the first SBC-REQ message 950 received among the SBC-REQ messages 950 and 960 received in the interval between the threshold frame 940 and the second frame.

Next, when it is determined that the received SBC-REQ message is the first SBC-REQ message, the operation unit 420 may broadcast the first SII-ADV message including the NSP list based on the first SBC-REQ message. After determining one frame, a pointer value indicating the first frame is calculated for each of the at least one SBC-REQ message received before the determined first frame. In more detail, the pointer value for each SBC-REQ message may be calculated using a difference between a frame number from which each SBC-REQ message is received and a first frame number determined by the operation unit 420.

On the other hand, if it is determined that the received SBC-REQ message is the second SBC-REQ message, the operation unit 420 may include a frame in which the second SII-ADV message including the NSP list is broadcast based on the second SBC-REQ message ( Hereinafter, after determining a 'second frame', a pointer value indicating a second frame is calculated for each of at least one SBC-REQ message received after the threshold frame and before the second frame.

9, the SBC-REQ messages 900, 910, and 920 calculate a pointer value indicating the first frame 930, and the first frame 930 and the threshold frame 940. SBC-REQ messages 950 and 960 received in the interval between are to calculate a point value representing the second frame 970.

In this case, the pointer value may be included in the pointer information such as the SII-ADV message pointer TLV as in the above-described first embodiment. Since the SII-ADV message pointer TLV has been described with reference to FIG. 7A, a detailed description thereof will be omitted. In addition, the first and second frames on which the first and second SII-ADV messages will be broadcast may be the same frames as the frames on which the periodic SII-ADV messages are broadcast.

As such, the calculator 420 determines the SII-ADV message transmission frame based on the first received SBC-REQ message so that the SBC-REQ messages can be processed as one SII-ADV message. A pointer value for representing a frame determined for each SBC-REQ is calculated.

Referring back to FIG. 4, the first message generator 430 generates an SBC-RSP message, which is a response message to each SBC-REQ message, and the first message generator 430 generates an SBC-RSP message. In this case, the SII-ADV message pointer TLV including the pointer value calculated for each SBC-RSP message is included in each SBC-RSP message.

Next, the second message generator 440 generates the SII-ADV message, but generates the SII-ADV message by including the NSP list requested from the terminal in the first and second SII-ADV messages. At this time, the NSP list included in the SII-ADV message is defined using at least one of the NSP List TLV including the ID of the NSP and the Verbose NSP Name List TLV including the name of the NSP, as described in the first embodiment. .

Meanwhile, in the above-described embodiment, the first message generator 430 and the second message generator 440 are described as separate components, but in the modified embodiment, the first message generator 430 and the first message generator 430 and the second message generator 440 are described. 2 The message generator 440 may be implemented as one component.

Finally, the message transceiver 450 receives the SBC-REQ message from the terminal, transmits the SBC-RSP message generated by the first message generator 430 to the terminal, and the second message generator 440. Broadcasts the SII-ADV message generated by the terminal. At this time, the message transceiver 450 broadcasts the first SII-ADV message in the first frame, broadcasts the second SII-ADV message in the second frame, or broadcasts the SII-ADV message to the terminal at predetermined time intervals. do.

As described above, according to the second embodiment, a plurality of SBC-REQ messages are processed as one SII-ADV message, but each time the SBC-REQ message is received from each terminal, the transmission time of the SII-ADV is determined. Since the time required for entry can be shortened and additional SII-ADV messages are transmitted only when a request of the UE occurs, it is possible to reduce waste of radio resources and further solve the battery problem of the UE.

Hereinafter, a method of operating a message for network discovery according to a second embodiment of the present invention will be described with reference to FIG. 10. 10 is a flowchart illustrating a message operating method for network discovery according to a second embodiment of the present invention.

As shown, first, it is determined whether the SBC-REQ message including the NSP list request information transmitted from the terminal is the first received SBC-REQ message (S1000). If the received SBC-REQ message is the first SBC-REQ message, the first frame on which the first SII-ADV message is to be broadcast is determined based on the first SBC-REQ message (S1010). In this case, the first frame on which the first SII-ADV message is to be broadcast may be the same frame as the frame on which the periodic SII-ADV message is to be broadcast.

Next, a pointer value for indicating the first frame determined in S1010 is calculated based on the corresponding SBC-REQ message (S1020). In one embodiment, the pointer value may be determined using the frame number and the first frame number from which the corresponding SBC-REQ message was received.

Subsequently, the SBC-RSP message for the corresponding SBC-REQ message is generated by including the SII-ADV message pointer TLV including the pointer value calculated in S1020 (S1030).

Next, after generating an NSP list including at least one of an NSP list requested from the UE, that is, an NSP List TLV and a Verbose NSP Name List TLV (S1040), the first SII-ADV message including the generated NSP list is generated. In operation S1050, the first SII-ADV message is generated in the first frame determined in operation S1010 and broadcasted to each terminal in operation S1060.

On the other hand, if the SBC-REQ message transmitted from the terminal in S1000 is not the first SBC-REQ message, it is determined whether the corresponding SBC-REQ message is received in the interval between the first frame and the threshold frame (S1070), If it is not generated in the interval between the first frame and the threshold frame step S1020 to S1060 is repeated. Here, the threshold frame is a frame before the predetermined number from the first frame, the position of the threshold frame may be determined in consideration of the time required to process the SBC-RSP message.

As a result of the determination in S1070, when the corresponding SBC-REQ message is generated in the interval between the first frame and the threshold frame, the corresponding SBC-REQ message is the first of the messages generated in the interval between the first frame and the threshold frame. In operation S1080, it is determined whether the received second SBC-REQ message is received, and in the case of the first received SBC-REQ message, a second frame on which the second SII-ADV message is to be broadcast is based on the second SBC-REQ message. Determine (S1090). In this case, the second frame on which the second SII-ADV message is to be broadcast may be the same frame as the frame on which the periodic SII-ADV message is to be broadcast.

Next, after calculating a pointer value for indicating a second frame determined in S1090 based on the corresponding SBC-REQ message (S1100), the SBC-ADV message pointer TLV including the calculated pointer value is included and the corresponding SBC-REQ message is included. A SBC-RSP message for the REQ message is generated (S1110).

Next, after generating an NSP list including at least one of an NSP list requested from the UE, that is, an NSP List TLV and a Verbose NSP Name List TLV (S1120), a second SII-ADV message including the generated NSP list is generated. In operation S1130, a second SII-ADV message is generated in the second frame determined in operation S1090 and broadcasted to each terminal in operation S1140.

On the other hand, if the corresponding SBC-REQ message is not the second SBC-REQ message first received in S1080, steps S1100 to S1140 are repeated.

The above-described message operating method for network discovery can be implemented in the form of program instructions that can be executed by various computer means and recorded in a computer-readable recording medium. In this case, the computer-readable recording medium may include program instructions, data files, data structures, and the like, alone or in combination. On the other hand, the program instructions recorded on the recording medium may be those specially designed and configured for the present invention or may be available to those skilled in the art of computer software.

The computer-readable recording medium includes a magnetic recording medium such as a magnetic medium such as a hard disk, a floppy disk and a magnetic tape, an optical medium such as a CD-ROM and a DVD, a magnetic disk such as a floppy disk, A magneto-optical media, and a hardware device specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. The recording medium may be a transmission medium such as an optical or metal wire, a waveguide, or the like including a carrier wave for transmitting a signal specifying a program command, a data structure, or the like.

In addition, program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

On the other hand, those skilled in the art will understand that the present invention described above can be implemented in other specific forms without changing the technical spirit or essential features.

Therefore, it is to be understood that the embodiments described above are exemplary in all respects and not restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention. do.

1 is a flowchart showing a network entry procedure.

2 is a flowchart showing a method of operating each message used for network discovery.

3 is a diagram showing a network reference model to which the present invention is applied.

4 is a schematic block diagram of an apparatus for operating a message for network discovery according to the second and second embodiments of the present invention.

5A is a table showing the configuration of an SBC-REQ message.

5B is a table showing the configuration of a SIQ TLV.

FIG. 6 is a diagram schematically illustrating a message operating method for network discovery according to a first embodiment of the present invention; FIG.

7A is a table showing the configuration of an SII-ADV message pointer TLV.

7B is a table showing the configuration of an SBC-RSP message.

7C is a table showing the configuration of an SII-ADV message.

7D is a table showing a configuration of an NSP List TLV.

7E is a table showing the configuration of a Verbose NSP Name List TLV.

8 is a flowchart showing a message operating method for network discovery according to a first embodiment of the present invention.

9 is a diagram schematically illustrating a message operating method for network discovery according to a second embodiment of the present invention.

10 is a flowchart showing a message operating method for network discovery according to a second embodiment of the present invention.

Claims (28)

Determining a frame section in which an SBC (SS Basic Capability) -REQ message including NSP list request information is received within a broadcast period of a periodic Service Identity Information (SII) -ADV message; If the SBC-REQ message is received within a first frame period, broadcasting the NSP list by including the NSP list in the SII-ADV message; And And when the SBC-REQ message is received within the second frame period, including the NSP list in an SBC-RSP message, which is a response message to the SBC-REQ message, and transmitting the SBC-REQ message. How to operate. The method of claim 1, wherein the SII-ADV message broadcasting step, Calculating a pointer value indicating a frame on which the SII-ADV message is to be broadcast; Including pointer information including the pointer value in an SBC-RSP message which is a response message to the SBC-REQ message and transmitting the pointer information; And And broadcasting the SII-ADV message in the frame. The method of claim 1, The NSP list is defined using at least one of the NSP List TLV representing the ID of the NSP and the Verbose NSP Name List TLV representing the name of the NSP. The method of claim 3, The NSP list request information is defined as a Service Information Query (SIQ) TLV, and when the value of the SIQ TLV is a first value, the NSP List TLV is included in the SII-ADV message or the SBC-RSP message as the NSP list. And when the value of the SIQ TLV is the second value, the NSP List TLV and the Verbose NSP Name List TLV are included in the SII-ADV message or the SBC-RSP message as the NSP list. Way. The method of claim 1, The first frame section is defined as a section before a predetermined number of frames from a threshold frame within the SII-ADV message broadcast period, and the position of the threshold frame is determined in consideration of the time required for processing the SBC-RSP message. Message operating method for network discovery, characterized in that. The method of claim 2, The pointer information is an SII-ADV message pointer TLV. The method of claim 1, Determining the number of terminals requesting network entry; If the number of terminals requesting network entry is less than or equal to a first threshold, performing the frame section determining step or the transmitting step. The method of claim 1, A method of operating a message for network discovery, characterized in that it is applied to a network reference model in which NAP (Network Access Provider) and NSP correspond to 1: 1 and a network reference model in which NAP and NSP correspond to 1: n. Determining a broadcast frame of a first SII-ADV message including the NSP list based on a first SBC-REQ message among SBC-REQ messages including NSP list request information; Pointer information including a pointer value indicating a broadcast frame of the first SII-ADV message for each of the at least one SBC-REQ message received before the broadcast frame of the first SII-ADV message is provided for each of the SBC-REQ messages. Including the response in the SBC-RSP message and transmitting it to each terminal; And And broadcasting the SII-ADV message including the NSP list to each terminal in a broadcast frame of the first SII-ADV message. 10. The method of claim 9, The first SBC-REQ message is the SBC-REQ message first received after the SBC-REQ message or the SII-ADV message received after the message operating device is booted. Way. 10. The method of claim 9, Second SBC-REQ received first among SBC-REQ messages received in a section between a broadcast frame of the first SII-ADV message and a threshold frame that is a frame before a predetermined number from the broadcast frame of the first SII-ADV message. Determining a second SII-ADV message broadcast frame including the NSP list based on a message; Each SBC includes pointer information including a pointer value indicating a broadcast frame of the second SII-ADV message for each of at least one SBC-REQ message received after the threshold frame and before the broadcast frame of the second SII-ADV message. -Including the SBC-RSP message in response to the REQ message and transmitting it to each terminal; And And broadcasting the second SII-ADV message including the NSP list to each terminal in a broadcast frame of the second SII-ADV message. The method of claim 11, The location of the threshold frame is determined in consideration of the time taken to process the SBC-RSP message, the message operation method for network discovery. 10. The method of claim 9, The NSP list is defined using at least one of the NSP List TLV representing the ID of the NSP and the Verbose NSP Name List TLV representing the name of the NSP. The method of claim 13, The NSP list request information is defined as a Service Information Query (SIQ) TLV, when the value of the SIQ TLV is a first value, the NSP List TLV is included in the SII-ADV message as the NSP list, and the value of the SIQ TLV. If the second value is the NSP list, the NSP List TLV and Verbose NSP Name List TLV are included in the SII-ADV message. 10. The method of claim 9, The first SII-ADV message may be one of a periodic SII-ADV message broadcast at predetermined time intervals or an aperiodic SII-ADV message broadcast by a request of a terminal. 10. The method of claim 9, Determining the number of terminals requesting network entry; And performing the determining step or the transmitting step when the number of terminals requesting network entry is greater than or equal to a second threshold. 10. The method of claim 9, A method of operating a message for network discovery, characterized in that applied to a network reference model in which NAP and NSP correspond to 1: 1 or a network reference model in which NAP and NSP correspond to 1: n. A determination unit for determining a frame section in which an SBC-REQ message including NSP list request information is received within an SII-ADV message broadcast period; A calculator configured to calculate a pointer value indicating a frame on which the SII-ADV message including the NSP list is to be broadcast when the frame section in which the SBC-REQ message is received is a first frame section; Generate an SBC-RSP message that is a response message to the SBC-REQ message, and if the frame period in which the SBC-REQ message is received is a first frame period, pointer information including the pointer value is added to the SBC-REQ message. Generating the SBC-RSP message and including the NSP list in the SBC-RSP message when the frame period in which the SBC-REQ message is received is a second frame period; A message generator; A second message generating unit generating the SII-ADV message including the NSP list when the frame section in which the SBC-REQ message is received is the first frame section; And And a message transceiver for receiving the SBC-REQ message and transmitting the SBC-REQ message and the SII-ADV message to a terminal. The method of claim 18, The NSP list is defined using at least one of an NSP List TLV representing an ID of an NSP and a Verbose NSP Name List TLV representing a name of the NSP, and the NSP list request information is defined as a Service Information Query (SIQ) TLV. Message operating device for network discovery. The method of claim 19, The first and second message generators include the NSP List TLV in the SBC-RSP or SII-ADV message as the NSP list information when the value of the SIQ TLV is a first value, and the value of the SIQ TLV is a second value. And the NSP List TLV and Verbose NSP Name List TLV as the NSP list information in the SBC-RSP or SII-ADV message. The method of claim 18, The apparatus for operating a message for network discovery, which is applied to a network reference model in which NAP and NSP correspond to 1: 1 and a network reference model in which NAP and NSP correspond to 1: n. A determination unit for determining a first received SBC-REQ message among SBC-REQ messages including NSP list request information; Determine a broadcast frame of a first SII-ADV message including the NSP list based on the first SBC-REQ message, and at least one SBC-REQ message received before the broadcast frame of the first SII-ADV message; A calculator configured to calculate a pointer value indicating a broadcast frame of the first SII-ADV message for each of the first and second SII-ADV messages; A first message generator configured to generate the SBC-RSP message by including pointer information including the pointer value in an SBC-RSP message which is a response to each SBC-REQ message; A second message generator for generating an SII-ADV message including the NSP list; And And a message transceiver for receiving the SBC-REQ message and transmitting the SBC-RSP message and the first SII-ADV message. The method of claim 22, The first SBC-REQ message is the SBC-REQ message first received after the SBC-REQ message or the SII-ADV message received after the message operating device is booted. Device. 24. The method of claim 23, The determination unit determines whether there are SBC-REQ messages received in a section between a broadcast frame of the first SII-ADV message and a threshold frame that is a frame before a predetermined number from the broadcast frame of the first SII-ADV message. The second SBC-REQ message first received among the received SBC-REQ messages, The operation unit determines at least a second SII-ADV message broadcast frame including the NSP list based on the second SBC-REQ message and after the threshold frame, at least received before the broadcast frame of the second SII-ADV message. A pointer value indicating a broadcast frame of the second SII-ADV message is calculated for each SBC-REQ message. And the message transmitting and receiving unit transmits the second SII-ADV message. The method of claim 24, The location of the threshold frame is determined in consideration of the time taken to process the SBC-RSP message, the message operating device for network discovery. The method of claim 22, The NSP list is defined using at least one of an NSP List TLV representing an ID of an NSP and a Verbose NSP Name List TLV representing a name of the NSP, and the NSP list request information is defined as a Service Information Query (SIQ) TLV. Message operating device for network discovery. The method of claim 26, The second message generator includes the NSP List TLV as the NSP list information in the SII-ADV message when the value of the SIQ TLV is a first value, and the NSP list information when the SIQ TLV is a second value. And including the NSP List TLV and Verbose NSP Name List TLV in the SII-ADV message. The method of claim 22, The first SII-ADV message is any one of a periodic SII-ADV message broadcast at a predetermined time interval or a non-periodic SII-ADV message broadcast by a request of the terminal, characterized in that the device for network discovery.

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