WO2017090979A1 - Procédé pour échanger une trame pour un service de mandataire dans un système de réseau local (lan) sans fil, et terminal utilisant ce dernier - Google Patents

Procédé pour échanger une trame pour un service de mandataire dans un système de réseau local (lan) sans fil, et terminal utilisant ce dernier Download PDF

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Publication number
WO2017090979A1
WO2017090979A1 PCT/KR2016/013548 KR2016013548W WO2017090979A1 WO 2017090979 A1 WO2017090979 A1 WO 2017090979A1 KR 2016013548 W KR2016013548 W KR 2016013548W WO 2017090979 A1 WO2017090979 A1 WO 2017090979A1
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nan
frame
service
gas
terminal
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PCT/KR2016/013548
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English (en)
Korean (ko)
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박기원
김동철
이병주
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엘지전자 주식회사
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • H04W84/20—Master-slave selection or change arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to wireless communication, and more particularly, to a method for exchanging a frame for a proxy service and a terminal using the same.
  • WLAN wireless local area network
  • the portable terminal may be a personal digital assistant (PDA), a laptop, a portable multimedia player (PMP).
  • PDA personal digital assistant
  • PMP portable multimedia player
  • communication between terminals in a WLAN system is performed through a management entity such as a base station or an access point.
  • the management medium is responsible for scheduling for data communication.
  • NAN is a standard established by the Wi-Fi Alliance (WFA) based on the Wi-Fi standard.
  • WFA Wi-Fi Alliance
  • the NAN specification provides for synchronization and discovery procedures between devices in the 2.5 GHz or 5 GHz frequency band.
  • An object of the present specification is to provide a method for exchanging a frame for a proxy service in a WLAN system and a terminal using the same.
  • the present specification relates to a method of exchanging a frame for a proxy service in a neighbor awareness network (NAN).
  • NAN neighbor awareness network
  • a proxy service which is a service registered to a first NAN terminal by a first NAN terminal.
  • Receiving a GAS (Generic Advertisement Service) discovery request frame from a second NAN terminal determining whether the first service identification information included in the GAS discovery request frame and the second service identification information corresponding to the registered service match. And if the second service identification information matches the first service identification information, transmitting the GAS discovery response frame to the second NAN terminal based on the GAS discovery request frame, and providing the proxy service at the first NAN terminal.
  • GAS Generic Advertisement Service
  • the registration request frame indicates the active period to be provided with the proxy service by the first NAN terminal Is a frame for acquiring power saving information, transmitting a GAS registration response frame including power saving information to the second NAN terminal based on the GAS registration request frame, and data processing for providing a proxy service in an active section. Performing a step.
  • a method for exchanging a frame for a proxy service according to an improved technique in a WLAN system and a terminal using the same are provided.
  • 1 and 2 illustrate a NAN cluster.
  • FIG. 3 is a block diagram of a structure of a NAN terminal according to an embodiment of the present disclosure.
  • FIG. 4 is a diagram illustrating a relationship between NAN components according to an embodiment of the present specification.
  • FIG. 5 is a diagram illustrating a relationship between NAN components according to another exemplary embodiment of the present specification.
  • FIG. 6 shows a NAN data communication structure for transmitting and receiving data between NAN terminals.
  • FIG. 7 illustrates an operation of a NAN terminal in a search window and a search window interval.
  • FIG. 10 is a diagram illustrating a method of exchanging frames in a neighbor aware network according to an embodiment of the present disclosure.
  • FIG. 11 is a diagram illustrating a method of exchanging frames in a neighbor aware network according to another embodiment of the present specification.
  • FIG. 12 is a diagram illustrating a method of exchanging frames in a neighbor aware network according to another embodiment of the present specification.
  • FIG. 13 is a diagram illustrating an operation of a NAN terminal in a proxy section according to an embodiment of the present disclosure.
  • 16 is a flowchart illustrating a method of performing a coverage loss detection operation of a NAN terminal according to another embodiment of the present specification.
  • 17 is a flowchart illustrating a method of performing an update operation of a NAN terminal according to an embodiment of the present disclosure.
  • FIG. 18 is a block diagram illustrating a wireless terminal to which an embodiment can be applied.
  • the NAN cluster may consist of NAN terminals using the same set of NAN parameters.
  • the NAN parameter may include interval information between successive discovery windows (hereinafter, referred to as 'DW'), information about a beacon interval, information about the NAN channel, and the like.
  • the NAN cluster 110 may include a plurality of NAN terminals 120_1, 120_2, 120_3, and 120_4. NAN cluster 110 uses the same set of NAN parameters.
  • the NAN cluster 110 may be a collection of a plurality of NAN terminals 120_1, 120_2, 120_3, and 120_4 synchronized to a schedule of the same search window DW.
  • One of the NAN terminals 120_1, 120_2, 120_3, and 120_4 of the NAN cluster 110 may include a NAN service discovery frame of a multicast or unicast scheme within a range of a discovery window DW.
  • 'SDF' may be directly transmitted to another NAN terminal.
  • the NAN cluster 210 may include at least one NAN master 220_1 and 220_2, and the NAN master is at least one other NAN terminal in the same NAN cluster 210 through a series of processes. Can be changed to For example, the NAN master of the NAN cluster 210 of FIG. 2 may be changed to at least one other NAN terminal 220_2 or 220_4.
  • At least one NAN master may transmit all of a synchronization beacon frame, a discovery beacon frame, and a NAN service discovery frame.
  • the sync beacon frame, the discovery beacon frame, and the NAN service discovery frame are described in more detail with reference to the following drawings.
  • the NAN terminal 300 may operate based on the physical layer 310 of 802.11.
  • the NAN terminal 300 includes NAN medium access control (MAC) 320, a NAN discovery engine 330, a plurality of applications (App_1, App_2, ..., App_n) and a plurality of applications as main components.
  • MAC medium access control
  • NAN application programming interfaces 341, 342, ..., 34n connected to (App_1, App_2, ..., App_n), respectively.
  • the NAN discovery engine 330 For the discovery operation of the NAN terminal and data communication with the counterpart NAN terminal, the NAN discovery engine 330 is based on primitives received from a plurality of applications (App_1, App_2, ..., App_n) of the NAN terminal. The operation of the NAN MAC 320 may be controlled. In addition, the NAN discovery engine 330 may perform a discovery operation for discovering another terminal in the NAN cluster, a further discovery operation for completing the discovery operation, and data communication with another terminal in the NAN cluster. Various operations for the scheduling operation may be provided.
  • the NAN MACs 420_1 and 420_2 may process NAN beacon frames and NAN service discovery frames.
  • the NAN engines 430_1 and 430_2 may process service requests (Queries) and responses.
  • the NAN engines 430_1 and 430_2 may provide various functions for scheduling for the synchronization scheme of the neighbor aware network according to an embodiment of the present specification.
  • FIG. 5 is a diagram illustrating a relationship between NAN components according to another exemplary embodiment of the present specification.
  • the NAN MAC 520 may process a NAN Beacon frame and a NAN Service Discovery frame.
  • the NAN search engine 530 may process service requests (Queries) and responses (Responses).
  • the NAN search engine 530 may provide the functionality of a subscription 531, follow-up 532, and publish 533.
  • the NAN search engine 530 may provide various functions for a further discovery operation according to an embodiment of the present specification.
  • the publish / subscribe functions 531 and 533 operate based on the service interface provided from the service / application 540. When instructions of the publish / subscribe 531, 533 are executed, an instance of the publish / subscribe 531, 533 function is created.
  • the follow-up 532 function may send and receive service specific information for the service / application 540.
  • a NAN data cluster (hereinafter, referred to as 'NDC') 620 may include at least two NAN terminals sharing a common NDC schedule in the same NAN cluster 110 of FIG. 1. (601, 602, 603, 604).
  • Each NAN terminal in the NDC 620 has at least one NAN data link (hereinafter, 'NDL') with another terminal belonging to the same NDC.
  • NDL may mean a common resource block (hereinafter referred to as 'CRB') negotiated between NAN terminals.
  • the NAN terminal may establish an NDL with another NAN terminal to share a resource block (CRB) for data transmission and reception.
  • Each NDL may have its own NDL schedule.
  • a NAN Data Path (hereinafter, referred to as 'NDP') may mean a data connection established for service between NAN terminals.
  • NDP may be set to request a service between NAN terminals.
  • the first NAN terminal 601 has an NDL with the second to fourth NAN terminals 602, 603, and 604.
  • the second NAN terminal 602 has an NDL with the first NAN terminal 601 and the third NAN terminal 603.
  • the third NAN terminal 603 has an NDL with the first NAN terminal 601 and the second NAN terminal 602.
  • the fourth NAN terminal 604 has an NDL with the first NAN terminal 601.
  • the remaining NAN terminals 605 ⁇ 618 in the NDC 620 may transmit and receive control information associated with the NAN parameter. Substantial data such as payload cannot be transmitted or received.
  • FIG. 7 illustrates an operation of a NAN terminal in a search window and a search window interval.
  • the discovery window DW may be referred to as a time and channel at which NAN terminals converge in a NAN cluster.
  • 7 represents a time axis t, and a unit of the time axis is a time unit (TU).
  • TU time unit
  • sync beacon frame (SBF), the discovery beacon frame (DBF) and the service discovery frame (SDF) transmitted by the NAN terminal of FIG. 7 may be transmitted through the same channel or through different channels. .
  • the interval from the start point DWStart_1 to the end point DWEnd_1 of the first time window DW_1 may be 16 TU, and the first cycle of the next cycle may be performed from the end point DWEnd_1 of the first time window DW_1.
  • the search window interval (DW interval) pointing between the start point DWStart_2 of the two time windows DW_2 may be 496 TUs.
  • the interval from the start point DWStart_2 to the end point DWEnd_2 of the second time window DW_2 of the next cycle may be 16 TU.
  • a synchronization beacon frame (SBF) is used for synchronization of NAN terminals in a NAN cluster.
  • a discovery beacon frame (hereinafter referred to as 'DBF') is used to advertise a NAN terminal that is not joined to the NAN cluster so that the NAN cluster can be found.
  • a service discovery frame (SDF) is used to exchange information about available services between NAN terminals.
  • At least one NAN terminal may transmit all of the NAN terminals in the NAN cluster by transmitting a synchronization beacon frame SBF during the discovery window DW.
  • One NAN terminal may transmit one sync beacon frame SBF during one discovery window DW.
  • the at least one NAN terminal may transmit at least one discovery beacon frame DBF in the discovery window interval DW_interval. Accordingly, the NAN terminals belonging to other NAN clusters can discover the NAN cluster to which the NAN terminal which transmitted the discovery beacon frame (DBF) belongs. In addition, the NAN terminals not belonging to the NAN cluster may discover the NAN cluster to which the NAN terminal which transmitted the discovery beacon frame (DBF) belongs.
  • DBF discovery beacon frame
  • the NAN terminal may transmit a service discovery frame SDF on a contention basis during the discovery window DW.
  • the NAN terminal may start a backoff timer set to an arbitrary value and transmit a service discovery frame (SDF) when the value of the backoff timer becomes zero.
  • SDF service discovery frame
  • the service discovery frame may include any one of two NAN service discovery protocol messages.
  • the NAN Service Discovery Protocol message may be a subscribe message to actively confirm the availability of a particular service.
  • the NAN service discovery protocol message may be a publish message transmitted when response criteria of the NAN terminal that receives the subscribe message are satisfied.
  • a publish message may be used to enable other NAN devices operating in the same NAN cluster to discover available services of the NAN terminal that transmits a publish message.
  • a service discovery frame (SDF) containing a subscribe message is referred to as a subscription frame
  • a service discovery frame (SDF) containing a publish message is referred to as a publish frame.
  • the first sections T0 to T1 correspond to the first search window DW_1 or the second search window DW_2, and the second sections T1 to T3 correspond to the search window intervals ( DW interval).
  • NAN_2 transmits a subscription frame to NAN_1.
  • the subscription frame may include information about a supportable service of NAN_2 and a supportable scheduling scheme of NAN_2.
  • NAN_1 transmits a publish frame to NAN_2.
  • the publish frame may include information about a supportable service of NAN_1 and a supportable scheduling scheme of NAN_1.
  • Steps S810 and S820 are referred to herein as capability exchange steps.
  • NAN_2 may transmit a data request frame to NAN_1.
  • NAN_1 may transmit a data response frame to NAN_2 in response to a data request frame.
  • the data request frame is shown to be transmitted within the first periods T0 to T1, but the present invention is not limited thereto.
  • NAN_1 and NAN_2 can negotiate a common resource block (CRB) that can transmit and receive data with each other.
  • CRB common resource block
  • the common resource blocks T2_1 to T2_3 of FIG. 8 include a first paging window (T2_1 to T2_2, paging window, PW) for paging transmission and a first transmission window (T2_2 to T2_3, transmission window, for data transmission). TxW).
  • NAN_1 and NAN_2 enter common resource blocks T2_1 to T2_3 at the same timing T2_1.
  • the first paging windows T2_1 to T2_2 may be started.
  • NAN_2 may transmit a paging frame to NAN_1.
  • the paging window PW will be described in more detail with reference to the accompanying drawings.
  • the NAN_1 receiving the paging frame may transmit data for NAN_2 to the NAN_2 during the transmission windows T2_2 to T2_3 and TxW.
  • common resource block T2_1 to T2_3 is illustrated in FIG. 8, it is not limited thereto and it will be understood that a plurality of common resource blocks CRB may exist in the second section T1 to T3.
  • NAN_8 is described as operating based on a 2-way scheme for setting up a data path between NAN_1 and NAN_2, but the present disclosure is not limited to this embodiment. As another embodiment, it will be appreciated that a 3-way scheme in which NAN_2 sends a data confirm frame to NAN_1 after receiving a data response frame may be used.
  • T1 to T3 may correspond to a search window interval (DW interval) of FIG. 7.
  • NAN_2 transmits a subscribe frame to NAN_1.
  • the subscription frame may include information about a supportable service of NAN_2 and a supportable scheduling technique of NAN_2.
  • NAN_1 transmits a publish frame to NAN_2.
  • the publish frame may include information about supportable services of NAN_1 and supportable scheduling of NAN_1.
  • steps S910 and S920 NAN_1 and NAN_2 can recognize a mutually supportable service and a supporting scheduling scheme.
  • steps S910 and S920 are referred to as capability exchange steps.
  • the NAN_2 may transmit a data request frame for requesting data to be transmitted to the NAN_2 to the NAN_1.
  • NAN_1 may transmit a data response frame to NAN_2 in response to a data request frame.
  • the data request frame is shown to be transmitted within the first periods T0 to T1, but is not limited thereto.
  • NAN_1 and NAN_2 can negotiate a common resource block (CRB) that can transmit and receive data with each other.
  • CRB common resource block
  • NAN_1 may transmit data for NAN_2 to NAN_2.
  • the NAN_1 and the NAN_2 may enter the common sections T2_1 to T2_2 at the same timing T2_1 to transmit or receive data.
  • FIG. 9 only one common section T2_1 to T2_2 is illustrated, but it is not limited thereto, and it will be understood that a plurality of common sections CRB may exist in the second section T1 to T3.
  • a NAN proxy terminal may be defined as a new role (concept) for the NAN terminal as a method for reducing power consumption of the NAN terminal of the present specification.
  • the NAN proxy terminal may be a NAN proxy server or a NAN proxy client.
  • the NAN proxy server may perform a data communication procedure for the NAN proxy client instead.
  • the NAN proxy server may perform a publish operation or a subscribe operation on behalf of the NAN proxy client.
  • the information provided by the NAN proxy client to perform data communication with other NAN terminals may be provided to other NAN terminals by the NAN proxy server instead.
  • the NAN proxy server may perform a procedure for data communication on behalf of the NAN proxy client to reduce power consumption of the NAN proxy client.
  • the NAN proxy server may be a terminal that is not sensitive to power consumption.
  • the NAN proxy client is a terminal operating based on low power, and may be a terminal sensitive to power consumption.
  • the NAN proxy client awakes in every search window DW in the same manner as the operation of the conventional NAN terminal, the use of the NAN proxy client sensitive to power consumption may be restricted.
  • a procedure for data communication using a terminal ie, a NAN proxy server
  • efficient data communication between NAN terminals may be performed.
  • a terminal ie, a NAN proxy server
  • Embodiments of the present disclosure using a NAN proxy terminal will be described based on the description of the following drawings.
  • FIG. 10 is a diagram illustrating a method of exchanging frames in a neighbor aware network according to an embodiment of the present disclosure.
  • Frames used for signaling between the first NAN terminal 1010 and the NAN proxy server of FIG. 10 may be Generic Advertisement Service (GAS) frames.
  • GAS Generic Advertisement Service
  • the GAS discovery request frame and the GAS discovery response frame used in the discovery procedures S1010 to S1030 of FIG. 10 are frames based on the Access Network Query Protocol mentioned in the IEEE 802.11u standard document 7.3.4. Can be.
  • the GAS discovery request frame referred to herein may be a frame based on the format of the GAS initial request frame mentioned in the IEEE 802.11u standard document 7.4.7.13.
  • the GAS discovery response frame referred to herein may be a frame based on the format of the GAS initial response frame mentioned in section 7.4.7.14 of the IEEE 802.11u standard document.
  • the first sections T0 to T1 of FIG. 10 may be search windows DW corresponding to the first sections T0 to T1 mentioned in FIGS. 8 and 9. Therefore, it will be appreciated that the descriptions based on the foregoing drawings with respect to the search window DW may be omitted.
  • discovery procedures S1010 to S1030 and registration procedures S1040 and S1050 may be performed between the first NAN terminal 1010 and the NAN proxy server 1020.
  • Discovery procedures between the first NAN terminal 1010 and the NAN proxy server may be a procedure for the first NAN terminal 1010 to search for a proxy service registered in the NAN proxy server 1020. have.
  • the first NAN terminal 1010 may transmit a GAS discovery request frame for searching for a proxy service, which is a service registered in the NAN proxy server 1020, to the NAN proxy server 1020.
  • the GAS discovery request frame may be a broadcast method or a multicast method.
  • the GAS search request frame may include an order region as shown in Table 1 below.
  • an order region indicated by '0' of Table 1 may be associated with category information. For example, it may indicate that the GAS discovery request frame is a frame associated with the NAN terminal through the order region indicated by '0'.
  • the order region indicated by '1' of Table 1 may be associated with action information. For example, it may indicate that the GAS search request frame is a frame for requesting a search of the proxy server through the order region indicated by '1'.
  • the order region indicated by '5' of Table 1 may be associated with query request information. If the order region indicated by '5' of Table 1 includes ANQP query identifier information (Query ID) for requesting information on the NAN proxy server, the NAN proxy server may request the contents of Table 2 below.
  • Query ID ANQP query identifier information
  • the proxy server 1020 may include identification information of a proxy service whose service ID and service name included in the GAS discovery request frame are registered in the proxy server 1020 in advance. Can be determined whether
  • the proxy server 1020 may respond to the GAS discovery response.
  • the frame may be transmitted to the first NAN terminal 1010.
  • the GAS discovery response frame may include an order region as shown in Table 3 below.
  • the order region indicated by '0' in Table 3 may be associated with category information. For example, it may indicate that the GAS discovery request frame is a frame associated with the NAN terminal through the order region indicated by '0'.
  • the order region indicated by '1' in Table 3 may be associated with action information.
  • the order region indicated by '1' may indicate that the GAS discovery response frame is a frame for responding to a discovery request of a proxy server.
  • the order region indicated by '7' of Table 1 may include query response information as a response to the query request information. That is, query response information corresponding to the contents of Table 2 may be included in the order region indicated by '7' of Table 3.
  • the registration procedures S1040 and S1050 between the first NAN terminal 1010 and the NAN proxy server may be a procedure for allowing the provision of a proxy service in the NAN proxy server 1020.
  • the first NAN terminal 1010 may transmit a GAS registration request frame allowing the provision of the proxy service from the NAN proxy server 1020 to the NAN proxy server 1020.
  • the proxy service allowed by the first NAN terminal is service identification information included in the GAS discovery request frame and the proxy service which is a service registered in advance in the proxy server 1020 through discovery procedures S1010 to S1030. It may mean a service corresponding to identification information of (proxy service).
  • the GAS registration request frame transmitted in step S1040 is for the first NAN terminal 1010 to obtain power saving information indicating the active period for the proxy service to be provided by the NAN proxy server 1020 It may be a frame.
  • the active section for the proxy service may be a time section other than the search window DW.
  • the power saving information includes the search window interval information associated with the interval in which the NAN proxy server 1020 awakes in the search window (DW), and the duration of the sleep mode of the NAN proxy server 1020. It may include sleep duration information associated with, awake time offset information associated with the start time of the active period and publish duration information associated with the duration of the active period.
  • the GAS registration request frame transmitted in step S1040 may include an order region as shown in Table 4 below.
  • an order region indicated by '0' of Table 4 may be associated with category information. For example, it may indicate that the GAS registration request frame is a frame associated with the NAN terminal through the order region indicated by '0'.
  • the order region indicated by '1' in Table 4 may be associated with action information.
  • the GAS registration request frame may indicate that the GAS registration request frame is for requesting registration of a service found through the discovery procedure.
  • the order region indicated by '5' of Table 4 may include ANQP query identifier information (Query ID) for requesting registration of a service from a NAN proxy server. Specifically, the contents of Table 5 may be included in the order region indicated by '5' of Table 4.
  • the first NAN terminal 1010 may receive a GAS registration response frame from the NAN proxy server 1020.
  • the GAS registration response frame may include power saving information associated with the NAN proxy server 1020.
  • the GAS registration response frame may include an order region as shown in Table 6 below.
  • the order region indicated by '0' in Table 6 may be associated with category information. For example, it may indicate that the GAS registration request frame is a frame associated with the NAN terminal through the order region indicated by '0'.
  • the order region indicated by '1' in Table 6 may be associated with action information. For example, it may indicate that the GAS registration response frame is transmitted in response to the GAS registration request frame through the order region indicated by '1'.
  • the order region indicated by '7' of Table 6 may include response information about ANQP query of the GAS registration request frame. That is, information about whether a service found through the discovery procedure is registered in the NAN proxy server may be included in the order region indicated by '7' of Table 6. Response information on the contents of Table 5 may be included in the order region indicated by '7' in Table 6.
  • the first NAN terminal 1010 can be understood as the aforementioned NAN proxy client.
  • FIG. 10 illustrates that the GAS frames are exchanged in the first sections T0 to T1 which are the search windows DW, the present specification is not limited thereto.
  • a discovery procedure and a registration procedure may be performed in a section commonly scheduled for NAN terminals in a NAN data cluster (NDC).
  • NDC NAN data cluster
  • the first NAN terminal that has entrusted the service to the NAN proxy server changes to the sleep mode from the active mode at the first timing T1, and then goes to sleep for the second period T1 to Tp1. You can keep the mode.
  • the NAN proxy server 1020 may perform data processing for providing a proxy service in the proxy section Tp1 to Tp2.
  • the NAN proxy server 1020 may perform a delegated proxy operation by transmitting a GAS publish frame including information associated with a proxy service.
  • the GAS published frame may be transmitted in an unsolicited manner.
  • the proxy sections Tp1 to Tp2 may be indicated according to the power saving information obtained in the registration procedures S1040 and S1050 of FIG. 10. For example, as shown in FIG. 10, when the proxy sections Tp1 to Tp2 are time sections other than the search window DW, awake time offset information and publish duration of the power saving information are published.
  • the proxy section may be set according to the duration) information.
  • the awake time offset information may indicate the start time Tp1 of the proxy sections Tp1 to Tp2.
  • the publication duration information may indicate a duration of the proxy sections Tp1 to Tp2.
  • the GAS publish frame may include an order region as shown in Table 7 below.
  • an order region indicated by '0' of Table 7 may be associated with category information. For example, it may indicate that the GAS publishing frame is a frame associated with the NAN terminal through the order region indicated by '0'.
  • the order region indicated by '1' in Table 7 may be associated with action information.
  • the order region indicated by '1' may indicate that the GAS publishing frame is a frame for publishing a proxy service.
  • the order region indicated by '7' of Table 7 may be associated with query request information. Specifically, the contents of Table 8 may be included in the order region indicated by '5' of Table 7.
  • the proxy service is published in the proxy section, but the present disclosure is not limited thereto.
  • a discovery procedure and a registration procedure may be performed in a section commonly scheduled for NAN terminals in a NAN data cluster (NDC).
  • NDC NAN data cluster
  • the first NAN terminal 1010 may acquire information on time intervals Tp1 to Tp2 for which a proxy service is provided from the NAN proxy server 1020 based on the power saving information received through the registration procedures S1040 and S1050. Can be.
  • the first NAN terminal 1010 may awake in the proxy section Tp1 to Tp2 to receive the GAS publishing frame in the active mode. For example, the first NAN terminal 1010 may perform an operation for checking whether a proxy service is normally provided from the NAN proxy server 1020, and will be described in more detail with reference to the following drawings.
  • the first NAN terminal 1010 may fall back to sleep mode to maintain the sleep mode for the third section Tp2 to T3.
  • the first cycles T0 to T3 may correspond to the search window interval DW interval of FIG. 7.
  • the first cycles T0 to T3 may be 512 time units (TUs).
  • TUs time units
  • the GAS publish frame is shown to be transmitted in a section other than the DW, but is not limited thereto.
  • the GAS publish frame may be transmitted in the search window DW.
  • NAN 10 is described in relation to one NAN terminal and one NAN proxy server, but is not limited thereto, and the present specification may be understood in relation to a plurality of NAN terminals and a plurality of NAN proxy servers.
  • step S1110 the NAN proxy server 1120 may transmit a proxy advertisement frame.
  • the NAN proxy server 1120 may provide other NAN terminals with information that they may operate as a NAN proxy server by transmitting a proxy advertisement frame.
  • the proxy advertisement frame may include information about the NAN proxy server role performed by the NAN proxy server 1120.
  • the proxy advertisement frame may be a service discovery frame (SDF) transmitted in a broadcast manner.
  • SDF service discovery frame
  • the first NAN terminal 1110 may identify a NAN proxy server based on the received proxy advertisement frame.
  • the first NAN terminal 1110 may transmit a GAS discovery request frame including identifier information about the identified NAN proxy server.
  • the GAS discovery request frame of step S1120 may be transmitted in a unicast manner.
  • FIG. 12 is a diagram illustrating a method of exchanging frames in a neighbor aware network according to another embodiment of the present specification. 10 and 12, it will be understood that the descriptions of the first sections T0 to T1 and the second sections T1 to Tp1 of FIG. 12 may be replaced with the contents described with reference to FIG. 10.
  • the first NAN terminal 1210 of FIG. 12 may transmit a GAS subscribe frame to the NAN proxy server 1220 in the proxy section Tp1 to Tp2.
  • the GAS subscription frame of FIG. 12 may include an order region as shown in Table 9 below.
  • an order region indicated by '0' in Table 9 may be associated with category information. For example, it may indicate that the GAS subscription frame is a frame associated with the NAN terminal through the order region indicated by '0'.
  • the order region indicated by '1' in Table 9 may be associated with action information. For example, it may indicate that the GAS subscribe frame is for subscribing the proxy service through the order region indicated by '1'.
  • the order region indicated by '5' of Table 9 may be associated with query request information.
  • Information associated with the proxied service may be included in the order region indicated by '5' of Table 9.
  • ANQP query identification information (eg, registered proxy service information) for requesting proxy service information registered in the NAN proxy server may be included in the order region indicated by '5' of Table 9.
  • the NAN proxy server 1220 may transmit a GAS publish frame in response to the GAS subscribe frame.
  • the GAS publish frame of FIG. 12 may include an order region as shown in Table 10 below.
  • an order region indicated by '0' of Table 10 may be associated with category information. For example, it may indicate that the GAS publishing frame is a frame associated with the NAN terminal through the order region indicated by '0'.
  • the order region indicated by '1' in Table 10 may be associated with action information.
  • the order region indicated by '1' may indicate that the GAS publishing frame is a frame for publishing a proxy service.
  • the order region indicated by '7' of Table 10 is associated with query response information, which is a response to query request information, and may specifically include information of Table 11 below.
  • the performance of the NAN terminal related to the accuracy of receiving a frame transmitted from the proxy server to the proxy client may be improved.
  • FIG. 13 is a diagram illustrating an operation of a NAN terminal in a proxy section according to an embodiment of the present disclosure.
  • the NAN proxy terminal 1310 of FIG. 13 is a first NAN terminal 1010 or 1110 of FIGS. 10 to 12 that has completed a discovery procedure and a registration procedure for the NAN proxy server 1320. 1210).
  • the NAN proxy terminal 1310 that has completed the discovery procedure and the registration procedure in the first sections T0 to T1 of FIGS. 10 to 12 maintains the sleep mode in the second sections T1 to Pr1. Can be.
  • the NAN proxy terminal 1310 of FIG. 13 may acquire power saving information of the NAN proxy server 1320 through the registration procedure described with reference to FIGS. 10 to 12.
  • the NAN proxy terminal 1310 awakes from the sleep mode to the active mode at the start time Pr1 of the proxy sections Pr1 to Pr2 based on the power saving information of the NAN proxy server 1320. can do.
  • the NAN proxy terminal 1310 may maintain an active mode during the proxy periods Pr1 to Pr2.
  • the NAN proxy server 1320 of FIG. 13 finds a second NAN terminal 1330 requesting a service corresponding to a service registered in the NAN proxy server 1320 (that is, a contracted service).
  • the NAN proxy server 1320 may perform data processing for providing a registered service (ie, a proxy service).
  • the NAN proxy server 1320 may transmit a GAS publish frame associated with a service entrusted from the NAN proxy terminal 1310 to the NAN proxy terminal 1310 and the second NAN terminal 1330.
  • the GAS publish frame transmitted in step S1330 may be transmitted in a unicast method or a multicast method.
  • descriptions of the first section T0 to T1 and the second section T1 to Tp1 of FIG. 14 may include the first section T0 to T1 and the second section of FIG. 10. It will be appreciated that it may be replaced by T1 ⁇ Tp1). Accordingly, it will be understood that descriptions of steps S1410 to S1450 may be omitted.
  • the first NAN terminal 1410 may obtain power saving information of the NAN proxy server 1420 through the registration procedures S1440 and S1450 of FIG. 14.
  • the power saving information acquired by the first NAN terminal 1410 of FIG. 14 performing coverage loss detection may include keep alive offset information and a keep alive report duration. alive offset duration) information may be further included.
  • the keep alive offset information may indicate a start time Tp3 of the alive sections Tp3 to Tp4 of FIG. 14.
  • the keep alive offset information may indicate a duration in which the first NAN terminal 1410 maintains the sleep mode from the end time T1 of the first intervals T0 to T1 and DW. have.
  • the keep alive report duration information may indicate the duration of the alive periods Tp3 to Tp4.
  • the first NAN terminal 1410 may transmit a keep alive report frame to the NAN proxy server 1420 in the alive periods Tp3 to Tp4.
  • the keep alive report frame may be a QoS null frame.
  • a keep alive report frame is transmitted for each subsequent cycle (not shown) after the first cycles T0 to T3 shown in FIG. 14.
  • a coverage loss detection operation may be performed based on whether a keep alive report frame is transmitted or received.
  • step S1510 the proxy client (that is, 1410 of FIG. 14) transmits a keep alive report frame to the NAN proxy server (that is, the live intervals Tp3 to Tp4 of FIG. 14). 1420 of FIG. 14.
  • the NAN proxy server may determine whether a keep alive report frame is received every cycle. If a keep alive report frame is received within a predetermined number of times, the procedure ends.
  • step S1530 may be performed.
  • the proxy server 1420 is out of coverage provided by the proxy server 1420 to the proxy client (that is, 1410 of FIG. 14) that has not received a keep alive report frame a predetermined number of times. Judging by Accordingly, the proxy server 1420 may delete information on the registered proxy client (ie, 1410 of FIG. 14).
  • 16 is a flowchart illustrating a method of performing a coverage loss detection operation of a NAN terminal according to another embodiment of the present specification.
  • a discovery procedure between the NAN proxy server and the NAN proxy client may be performed.
  • the discovery procedure of FIG. 16 may correspond to the discovery procedures S1010 to S1030 of FIG. 10.
  • a registration procedure between the NAN proxy server and the NAN proxy client may be performed.
  • the registration procedure of FIG. 16 may correspond to the registration procedures S1040 and S1050 of FIG. 10.
  • step S1630 the NAN proxy client (ie, 1010 of FIG. 10) performing a coverage loss detection operation maintains an active mode in the proxy section of FIG. 10 and publishes a GAS publication associated with the proxy service from the NAN proxy server. You can check whether or not a time frame is received.
  • the NAN proxy client may check whether the service entrusted to the NAN proxy server is normally provided in the coverage of the NAN proxy server in each cycle. If the NAN proxy server receives the GAS publish frame within a predetermined number of times, the procedure ends.
  • step S1640 may be performed.
  • the NAN proxy client may perform an operation for searching for a new NAN proxy server.
  • 17 is a flowchart illustrating a method of performing an update operation of a NAN terminal according to an embodiment of the present disclosure.
  • the first NAN terminal 1710 may transmit an update request frame to the NAN proxy server 1720 in the update period Tp5 to Tp6.
  • the update request frame mentioned in FIG. 17 may be used in two cases by way of example.
  • the update request frame may be a frame for requesting updated information from the NAN proxy server 1720.
  • the update request frame may include an order region as shown in Table 9 above.
  • the update request frame of FIG. 17 may be a frame for delivering its updated information when updated information is generated in the first NAN terminal 1710.
  • the update request frame may include an order region as shown in Table 12 below.
  • an order region indicated by '0' in Table 12 may be associated with category information.
  • the update request frame may indicate that the update request frame is a frame associated with the NAN terminal through an order region indicated by '0'.
  • the order region indicated by '1' in Table 12 may be associated with action information.
  • the update request frame may indicate that the update request frame is a frame for delivering updated information to the first NAN terminal 1710 which is a NAN proxy client through the order region indicated by '1'.
  • the order region indicated by '5' in Table 12 may be associated with query request information and may include updated information in the first NAN terminal 1710.
  • ANQP query identification information for registering an updated item of the NAN proxy client in the NAN proxy server may be included in the order region indicated by '5' of Table 12.
  • the update response frame of FIG. 17 may include an order region as shown in Table 13 below.
  • the order region indicated by '0' in Table 13 may be associated with category information. For example, it may indicate that the update frame is a frame associated with the NAN terminal through the order region indicated by '0'.
  • the order region indicated by '1' in Table 13 may be associated with action information. For example, it may indicate that the update response frame is transmitted in response to the update request frame through the order region indicated by '1'.
  • the order region indicated by '7' of Table 13 may include information on whether to perform an update operation by the NAN proxy server in response to the ANQP query of the update request frame. Specifically, the contents of Table 14 may be included in the order region indicated by '7' in Table 13.
  • the first NAN terminal 1710 may request an update request frame to request updated contents from the NAN proxy server in a further availability window (hereinafter referred to as 'FAW') or an NDC common schedule period.
  • 'FAW' further availability window
  • NDC common schedule period may include the contents of Table 9 above.
  • the NAN terminal may transmit its update to the NAN proxy server through an update request frame in an additional available window (FAW) or NDC common schedule period.
  • the update request frame may include an order region as shown in Table 12 above.
  • the update response frame transmitted in response to the update request frame may include an order region as shown in Table 13 above.
  • the proxy client may transmit a GAS request frame to the proxy server in order to terminate the proxy service, which is a service registered in the proxy server.
  • the GAS request frame may include an order region as shown in Table 15 below.
  • an order region indicated by '0' of Table 15 may be associated with category information. For example, it may indicate that the GAS request request frame is a frame associated with the NAN terminal through the order region indicated by '0'.
  • the order region indicated by '1' of Table 15 may be associated with action information.
  • the GAS request request frame may indicate that the NAN proxy client is a frame for canceling a proxy service registered in the NAN proxy server.
  • the order region indicated by '5' of Table 15 is associated with query request information and may include information for canceling a proxy service registered in a NAN proxy server.
  • the proxy server may send a GAS release response frame in response to the GAS release request frame.
  • the GAS release response frame may include an order region as shown in Table 16 below.
  • an order region indicated by '0' of Table 16 may be associated with category information. For example, it may indicate that the GAS release response frame is a frame associated with the NAN terminal through the order region indicated by '0'.
  • the order region indicated by '1' in Table 16 may be associated with action information. For example, it may indicate that the GAS release response frame is transmitted in response to the GAS release request frame through the order region indicated by '1'.
  • the order region indicated by '7' of Table 16 may include information on whether to perform a deregistration operation by the NAN proxy server in response to an ANQP query of a GAS request request frame. Specifically, the contents of Table 17 may be included in the order region indicated by '7' of Table 16.
  • FIG. 18 is a block diagram illustrating a wireless terminal to which an embodiment can be applied.
  • a wireless terminal may be an STA that may implement the above-described embodiment and may be an AP or a non-AP STA.
  • the wireless terminal may correspond to the above-described user or may correspond to a transmitting terminal for transmitting a signal to the user.
  • the AP 1800 includes a processor 1810, a memory 1820, and a radio frequency unit 1830.
  • the RF unit 1830 may be connected to the processor 1810 to transmit / receive a radio signal.
  • the processor 1810 may implement the functions, processes, and / or methods proposed herein. For example, the processor 1810 may perform an operation according to the present embodiment described above. The processor 1810 may perform an operation of the AP disclosed in the present embodiment of FIGS. 1 to 17.
  • the non-AP STA 1850 includes a processor 1860, a memory 1870, and a radio frequency unit (RF) 1880.
  • RF radio frequency unit
  • the RF unit 1880 may be connected to the processor 1860 to transmit / receive a radio signal.
  • the processor 1860 may implement the functions, processes, and / or methods proposed in the present embodiment.
  • the processor 1860 may be implemented to perform the non-AP STA operation according to the present embodiment described above.
  • the processor 1860 may perform the operation of the non-AP STA disclosed in the present embodiment of FIGS. 1 to 17.
  • Processors 1810 and 1860 may include application-specific integrated circuits (ASICs), other chipsets, logic circuits, data processing devices, and / or converters for interconverting baseband signals and wireless signals.
  • the memories 1820 and 1870 may include read-only memory (ROM), random access memory (RAM), flash memory, memory cards, storage media, and / or other storage devices.
  • the RF unit 1830 and 1880 may include one or more antennas for transmitting and / or receiving a radio signal.
  • Modules may be stored in memories 1820 and 1870 and executed by processors 1810 and 1860.
  • the memories 1820 and 1870 may be inside or outside the processors 1810 and 1860, and may be connected to the processors 1810 and 1860 by various well-known means.

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  • Mobile Radio Communication Systems (AREA)

Abstract

Conformément à un mode de réalisation, la présente invention concerne un procédé pour échanger une trame pour un service de mandataire, lequel procédé consiste : à recevoir, à partir du second terminal NAN, une trame de requête de recherche GAS pour rechercher un service de mandataire qui est un service enregistré dans le premier terminal NAN ; à déterminer si des premières informations d'identification de service incluses dans la trame de requête de recherche GAS coïncident ou non avec des secondes informations d'identification de service correspondant au service enregistré ; à transmettre une trame de réponse de recherche GAS au second terminal NAN sur la base de la trame de requête de recherche GAS lorsque les secondes informations d'identification de service coïncident avec les premières informations d'identification de service ; à recevoir, à partir du second terminal NAN, une trame de requête d'enregistrement GAS pour approuver la fourniture du service de mandataire dans le premier terminal NAN, et à transmettre une trame de réponse d'enregistrement GAS au second terminal NAN sur la base d'une trame de requête d'enregistrement comprenant les informations d'économie d'énergie ; et à réaliser un traitement de données pour fournir le service de mandataire dans une section active.
PCT/KR2016/013548 2015-11-23 2016-11-23 Procédé pour échanger une trame pour un service de mandataire dans un système de réseau local (lan) sans fil, et terminal utilisant ce dernier WO2017090979A1 (fr)

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