WO2015060597A1 - Procédé et dispositif de configuration de connexion d'un système de communications sans fil - Google Patents

Procédé et dispositif de configuration de connexion d'un système de communications sans fil Download PDF

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Publication number
WO2015060597A1
WO2015060597A1 PCT/KR2014/009832 KR2014009832W WO2015060597A1 WO 2015060597 A1 WO2015060597 A1 WO 2015060597A1 KR 2014009832 W KR2014009832 W KR 2014009832W WO 2015060597 A1 WO2015060597 A1 WO 2015060597A1
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Prior art keywords
node
group
nodes
target
central
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PCT/KR2014/009832
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English (en)
Korean (ko)
Inventor
신봉진
강한수
양칠렬
이명환
이춘호
이태영
강재은
윤강진
Original Assignee
삼성전자주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority claimed from KR1020140116966A external-priority patent/KR102364431B1/ko
Application filed by 삼성전자주식회사 filed Critical 삼성전자주식회사
Priority to US15/030,750 priority Critical patent/US10582546B2/en
Priority to EP14855434.8A priority patent/EP3062577B1/fr
Publication of WO2015060597A1 publication Critical patent/WO2015060597A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08—User group management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/14—Access restriction or access information delivery, e.g. discovery data delivery using user query or user detection

Definitions

  • the present invention relates to a connection setup of a wireless communication system.
  • Wi-Fi Wireless Fidelity
  • a WLAN system is a system in which wireless devices located within a certain area share resources. As wireless devices located within a certain area increase, there is a need to connect them more easily and quickly.
  • embodiments of the present invention provide a method and apparatus for easily and quickly connecting wireless devices in a wireless communication system.
  • Embodiments of the present invention provide a method and apparatus for easily and quickly connecting a plurality of wireless devices in a wireless LAN system.
  • Embodiments of the present invention provide a method and apparatus for minimizing an operation performed by a user when connecting a plurality of wireless devices in a wireless LAN system.
  • Embodiments of the present invention provide a method and apparatus for minimizing an operation performed by a user and minimizing a connection time when a plurality of wireless devices are connected in a wireless LAN system.
  • Embodiments of the present invention provide a method and apparatus for configuring a network having an optimal performance when extending a service area to a multi-hop network topology in a wireless LAN system.
  • Embodiments of the present invention provide a method and apparatus for minimizing network traffic in a situation where a plurality of wireless devices simultaneously transmit data and forward data to multi-hops in a wireless LAN system.
  • a method of operating a central node in a wireless communication system including a group formed by at least one central node includes: two or more requesting a connection to the group within a predetermined time period. Detecting target nodes; And sequentially establishing and connecting the target nodes to the group.
  • an operation method of each of two or more target nodes requesting to connect to the group within a predetermined time may be: Searching for at least one node of the group existing within a set transmission area; And when at least one node of the group is discovered, attempting to connect to the group through the discovered node, wherein the target nodes are sequentially connected to the group.
  • a method of operating a general node in a wireless communication system including a group formed by one central node and at least one general node includes: at least one object existing within a preset transmission area; Receiving a request to connect to the group from a node; And establishing a connection with the target node to the group through communication with the central node.
  • the apparatus of the central node comprises: accessing the group by two or more target nodes within a predetermined time.
  • a processor configured to sequentially connect the target nodes to the group.
  • an apparatus of each of two or more target nodes requesting to connect to the group within a predetermined time may include: a communication module ; And a processor for searching for at least one node of the group existing within a preset transmission area, and attempting to connect to the group with the discovered node through the communication module when at least one node of the group is found.
  • the target nodes are sequentially connected to the group.
  • the apparatus of the general node comprises: at least one target node existing within a preset transmission area; A communication module for receiving a connection request from the group to the group; And a processor configured to connect the target node to the group through communication with the central node.
  • Embodiments of the present invention provide convenience of automatically establishing a connection when a user only triggers to establish a connection when establishing a plurality of wireless devices (or nodes) in a wireless communication system.
  • a user when connecting two or more target nodes within a preset time, it is not necessary to wait for a predetermined walk time for each target node, so the time required when connecting two or more target nodes is set. Can be reduced.
  • the connection setup can be made by triggering any device in the network group.
  • embodiments of the present invention can reliably receive all services in a multi-hop network by considering the number of nodes currently connected and the number of hops from a central node or a source node in the process of selecting a node to be connected among the discovered nodes. You can do that.
  • FIG. 1 is a view showing the configuration of a wireless communication system according to an embodiment of the present invention.
  • FIGS. 2A to 2C are diagrams illustrating examples of a connection establishment operation according to an embodiment of the present invention.
  • 3A and 3B are diagrams illustrating a processing process between nodes for a connection establishment operation according to an embodiment of the present invention.
  • FIG. 4 is a diagram illustrating a node capability checking process for a connection establishment operation according to an embodiment of the present invention.
  • 5A to 5C are diagrams illustrating a frame format of a connection establishment message for a connection establishment operation according to an embodiment of the present invention.
  • FIG. 6 is a diagram illustrating a configuration of a central node for a connection establishment operation according to an embodiment of the present invention.
  • FIG. 7 is a diagram illustrating a configuration of a general node for a connection establishment operation according to an embodiment of the present invention.
  • FIG. 8 is a diagram illustrating a processing flow of a target node for a connection establishment operation according to an embodiment of the present invention.
  • FIG. 9 is a diagram illustrating a processing flow of a relay node for a connection establishment operation according to an embodiment of the present invention.
  • FIG. 10 is a diagram illustrating a processing flow of a central node for a connection establishment operation according to an embodiment of the present invention.
  • FIG. 11 is a diagram illustrating an example of a connection establishment operation according to an embodiment of the present invention.
  • FIG. 12 is a diagram illustrating another example of a connection establishment operation according to an embodiment of the present invention.
  • FIG. 13 is a diagram illustrating an example of a processing flow of a target node for a connection establishment operation according to an embodiment of the present invention.
  • FIG. 14 is a diagram illustrating another example of a processing flow of a target node for a connection establishment operation according to an embodiment of the present invention.
  • 15 is a diagram illustrating still another example of a processing flow of a target node for a connection establishment operation according to an embodiment of the present invention.
  • 16 is a diagram showing the configuration of a wireless communication system according to another embodiment of the present invention.
  • 17 is a view for explaining an example of a connection establishment operation according to another embodiment of the present invention.
  • connection establishment operation is a view for explaining another example of a connection establishment operation according to another embodiment of the present invention.
  • Embodiments of the present invention to be described below relate to a method for enabling easier and faster connection of wireless devices in a wireless communication system.
  • Embodiments of the present invention to be described below will be described with an example applied to a wireless LAN system, but the scope of the present invention is not necessarily limited thereto.
  • the wireless LAN system may be an IEEE 802.11 based wireless LAN system or a Wi-Fi system based on the Wi-Fi Alliance.
  • the wireless device equipped with the Wi-Fi technology to be described later may be representatively a WLAN access point (AP), a smartphone, a smart home appliance, but is not limited thereto.
  • wireless devices include wireless LAN APs, smartphone tablet PCs, mobile phones, video phones, e-book readers, desktop personal computers, and laptops.
  • PC personal computer
  • PDA personal digital assistant
  • PMP portable multimedia player
  • MP3 player speaker
  • camera wearable device
  • electronic clock electronic clock
  • Wristwatches refrigerators, air conditioners, cleaners, artificial intelligence robots, TVs, digital video disk (DVD) players, audio, ovens, microwaves, washing machines, air purifiers, medical devices (e.g.
  • MRA magnetic resonance angiography
  • MRI Magnetic resonance imaging
  • CT computed tomography
  • imaging equipment ultrasound
  • navigation devices global positioning system receivers
  • event data recorders flight data recorders
  • set-top boxes set-top box
  • TV box example For example, Samsung HomeSyncTM, Apple TVTM, or Google TVTM
  • electronic dictionaries automotive infotainment devices, electronic equipment for ship, avionics, security devices, camcorders, game consoles It can contain one or more of (game consoles).
  • FIG. 1 is a view showing the configuration of a wireless communication system according to an embodiment of the present invention.
  • the configuration shown in FIG. 1 is for illustration only, and other configurations may be used without departing from the scope of the present invention.
  • a wireless communication system includes a network group 10 formed by a central node 100 and nodes 110-160 located in a predetermined area, and a node as a new enrollee attempting to establish a connection to the network group 10. Contains 7 170.
  • Nodes 110-160 are connected to the central node 100 and already form a network group 100.
  • Node 1 110 has established a direct connection to the central node 100
  • Node 2 120 has established a direct connection to the central node 100
  • Node 4 140 has established a direct connection to the central node 100
  • Node 6 160 has established a direct connection to the central node 100. It became.
  • Node 3 130 is connected to the central node 100 through node 2 120 and node 5 150 is connected to the central node 100 through node 4 140.
  • the node 7 170 is connected to the network group 10 by a group join method.
  • the group join method is an extended connection method that enables 1: N connection as well as 1: 1 connection.
  • the entire group 10 is changed to the triggering state, and in this state, a connection establishment operation for node 170 is performed through any node selected in group 10. For example, when the node 170 and the central node 100 of the network group 10 are triggered, the connection establishment operation for the node 170 is performed. As another example, when another node other than the node 170 and the central node 100 of the network group 10 is triggered, the connection establishment operation for the node 170 is performed.
  • the connection establishment operation for node 170 is performed through the selected one node within a predefined transmission area (eg, 1 hop) from node 170 among the nodes in network group 10. For example, when there are a plurality of nodes in the transmission area, the node having the largest received signal strength may be selected.
  • the node selected for the connection establishment operation may be the same as or different from the node triggered for the connection establishment.
  • network group 10 is a multi-hop network. Even if node 170 is a node two or more hops away from central node 100, node 170 performs a connection establishment operation through any node in group 10. do.
  • the wireless communication system shown in FIG. 1 may be a Wi-Fi system based on the Wi-Fi Alliance.
  • nodes 100-170 are wireless devices that support Wi-Fi technology.
  • central node 100 is an AP
  • nodes 110-170 are nodes of a general wireless device.
  • Wi-Fi Protected Setup (or Wi-Fi Simple Configuration) technology, which is one of the ways in which a Wi-Fi device connects to an AP in a Wi-Fi system as a triggering method for establishing a connection on node 170.
  • Wi-Fi Protected Setup is a technology developed to easily create Wi-Fi protected connections and is part of the Wi-Fi Alliance standard.
  • WPS technology includes a personal identification number (PIN) input method, a push button configuration (PBC) method, a near field communication (NFC) method, and a USB method.
  • PBC personal identification number
  • NFC near field communication
  • USB method a USB method.
  • the PBC scheme may be used for establishing a connection according to an embodiment of the present invention.
  • the PBC method is a method in which a user presses a connection button of a device to be connected.
  • multiple Wi-Fi devices (or nodes) 110-160 are connected to one AP (or registrar) 100 to form one group 10.
  • the nodes 110-160 may be connected to the AP 100 through multi hops.
  • nodes 110, 120, 140, and 160 are connected to AP 100 in 1-hop.
  • nodes 130 and 150 are connected to AP 100 in two hops.
  • the new node 170 When there is a new node 170 to connect to the AP 100, it is possible to PBC trigger the connection between the new node 170 and any of the members of network group 10. If any group member is PBC triggered, the entire group 10 is changed to PBC triggering. With Group 10 being PBC triggered, the new node 170 selects one of the group members in the transmission region (eg 1 hop) and connects the selected node (or relay node) to the PBC. The new node 170 obtains information about the AP 100 through the relay node, and transmits a group information request message to the AP 100 through the obtained information.
  • the group members in the transmission region eg 1 hop
  • the AP 100 Upon receiving the group information request message, the AP 100 knows that the new node 170 has entered the group, and the AP 100 updates the new node 170 in the group information list managed by the AP 100. Thereafter, the AP 100 delivers the updated group information list to the entire group.
  • FIGS. 2A to 2C are diagrams illustrating examples of a connection establishment operation according to an embodiment of the present invention.
  • the target node 170 and the AP 100 for a new subscription are PBC triggered, the target node 170 is directly connected to the AP 100.
  • the AP 100 is within a predefined transmission area (eg, 1 hop) from the target node 170.
  • the target node 170 and the node 120 for the new subscription are PBC triggered, the target node 170 is connected to the AP 100 through the node 120.
  • Node 2 120 functions as a relay node. In this case, it is assumed that the node 120 is within a predefined transmission area (eg, 1 hop) from the target node 170.
  • the target node 170 and the node 110 for the new subscription are PBC triggered
  • the target node 170 is connected to the AP 100 through the selected node 120.
  • Node 120 functions as a relay node.
  • the node 120 is within a predefined transmission area (eg, 1 hop) from the target node 170.
  • 2A and 2B show a case where a PBC triggered node and a node selected for establishing a connection are the same, while FIG. 2C shows a case where the PBC triggered node and a node selected for establishing a connection are different.
  • the target node 170 selects a central node when a central node (eg, an AP) is found among nodes within a predefined transmission area. In another embodiment, the target node 170 selects a node having the largest received signal strength when the central node is not found among the nodes in the transmission area from the target node 170. In another embodiment, the target node 170 is any one of the nodes in the transmission zone, considering the number of currently connected nodes and the number of hops from the central node when the AP is not discovered. Select the node. In another embodiment, the target node 170 is any one of the nodes in the transmission zone, considering the number of currently connected nodes and the number of hops from the source node when the AP is not discovered. Select the node.
  • a central node eg, an AP
  • the target node 170 selects a node having the largest received signal strength when the central node is not found among the nodes in the transmission area from the target node 170.
  • 3A and 3B are diagrams illustrating a processing process between nodes for a connection establishment operation according to an embodiment of the present invention.
  • the flows shown in FIGS. 3A and 3B are for illustration only, and other flows may be used without departing from the scope of the present invention.
  • 3A illustrates a process for establishing a connection between the node 170 and the AP 100 when the node 170 and the AP 100 are PBC triggered. This process corresponds to the setting example shown in Fig. 2A.
  • 3B illustrates a process in which node 170 is connected to AP 100 through node 120 when node 170 and node 120 are PBC triggered. This process corresponds to the setting example shown in FIG. 2B.
  • step S100 the AP 100 and the node 170 perform a PBC triggering and node capability check process.
  • the node 170 requests a group information request message. Send the request to the AP 100.
  • Group Information Request Message Group Info Send the request to the AP 100.
  • the AP 100 recognizes that the node 170 is requesting to establish a connection with the group, and updates the group information list by adding the node 170 to the group information list.
  • step S220 the AP 100 sends a group information response message including the updated group information list. Send a response to node 170.
  • Group Information Response Message Group Info The response is transmitted not only to node 170 as a new subscriber but also simultaneously to nodes as existing subscribers within a predefined transmission area (eg, 1 hop) from AP 100.
  • step S100 the AP 100 and the node 120 perform a PBC triggering and node capability check process.
  • the node 120 requests a group information request message. Send the request to the AP 100.
  • Group Information Request Message Group Info Send the request to the AP 100.
  • the AP 100 recognizes that the node 120 is requesting to establish a connection with the group, and updates the group information list by adding the node 120 to the group information list.
  • the AP 100 sends a group information response message including the updated group information list. Send a response to node 120.
  • Group Information Response Message Group Info The response is sent not only to node 120 as a new subscriber but also to nodes as existing subscribers at the same time.
  • step S300 the node 120 and the node 170 perform a PBC triggering and node capability check process.
  • the node 170 requests AP information. Send the request to node 120.
  • the node 120 includes an AP information response message including information about the AP. Send a response to node 170. Accordingly, the node 170 obtains AP information through the node 120.
  • step S330 the node 170 requests the group information request message Group Info. Send the request to node 120.
  • Group Information Request Message Group Info When the request is received, in step S330, the node 120 sends a group information request message Group Info. Send the request to the AP 100. Accordingly, the AP 100 recognizes that the node 170 requests the group to establish a connection, and updates the group information list by adding the node 170 to the group information list.
  • step S350 the AP 100 sends a group information response message including the updated group information list. Send a response to node 120.
  • Group Information Response Message Group Info The response is transmitted not only to the node 120 but also simultaneously to nodes as existing subscribers (eg, nodes 110, 120, 140, 160 of FIG.
  • the node 120 includes a group information response message Group Info. Send a response to node 170.
  • Group Information Response Message Group Info. The response is transmitted not only to node 170 as a new subscriber but also simultaneously to nodes as existing subscribers (eg, node 130 of FIG. 1) that are within a predefined transmission area (eg, 1 hop) from node 120.
  • FIG. 4 is a diagram illustrating a node capability checking process for a connection establishment operation according to an embodiment of the present invention. This figure may be a specific flow of the PBC triggering and node capability checking process shown in step S100 shown in Figures 3a and 3b. The flow shown in FIG. 5 is for illustration only, and other flows may be used without departing from the scope of the present invention.
  • the node 120 transmits a probe request message Probe Request for connection establishment to the AP 100 in step S120.
  • the probe request message Probe Request includes a Node Capability information element (IE) indicating capability information of the node 120.
  • IE Node Capability information element
  • PBC triggering for node 120 may be performed active by the user.
  • the AP 100 corresponds to the probe request message Probe Request and transmits a probe response message Probe Response indicating capability information of the AP 100 to the node 120.
  • the probe response message Probe Response includes a Node Capability information element (IE).
  • IE Node Capability information element
  • PBC triggering for the AP 100 may be performed active by the user.
  • PBC triggering for node 120 may be performed automatically in a predefined beacon period.
  • step S150 the node 120 checks the node capability of the AP 100 based on the received probe response message Probe Response. If it is checked that the AP 100 is a node having a connectable capability, the node 120 transmits an authentication request message Authentication Request to the AP 100 in step S160.
  • the AP 100 checks the node capability of the node 120. If it is checked that the node 120 is a node having a connectable capability, in step S180, the AP 100 transmits an authentication response message Authentication Response corresponding to the authentication request message Authentication Request to the node 120.
  • the node capability verification scheme as shown in FIG. 4 is used to enhance connection security. For example, only a node of a device type that can be joined to the same group is restricted to join the group. As another example, whether to support a specific protocol, a security level, or the like may be determined whether to be joined in the same group. It informs the other side that it is a node that can be joined to the same group by adding node capability information to messages exchanged to form a PBC connection (eg, probe request message, probe response message). The procedure for verifying node capability information is performed before the PBC connection process begins. Node capability information is included in the message used for the PBC connection. For example, a message for a PBC connection is a probe request / response message. Node capability information may be added to a Vendor Specific IE in the probe request / response message.
  • FIGS. 5A-5C are diagrams illustrating a frame format of a connection establishment message for a connection establishment operation according to an embodiment of the present invention.
  • the group information request / response message, probe request / response message, and AP information request / response message for the PBC connection may have a format as shown.
  • the configurations shown in FIGS. 5A-5C are for illustration only, and other configurations may be used without departing from the scope of the present invention.
  • the connection establishment message includes a MAC header 40 and a frame body 41.
  • the MAC header 40 includes an address field 42.
  • the frame body 41 includes vendor specific information in a last field. Node capability information may be added to the operator specific information.
  • the node capability information included in the frame body 41 includes field 41-A including information on the number of nodes currently connected, and hop count information.
  • the number of connected nodes means the number of nodes connected to each node in the group 10 shown in FIG.
  • the information about the hop number includes hop number information from the central node.
  • the information about the hop number includes hop number information from the source node.
  • the source node refers to a node that provides information such as music among the nodes in the group 10 shown in FIG. 1.
  • the node capability information may be included in a beacon or probe response message sent by the central node 100 and each generic node in group 10.
  • the node capability information is described as an example including both information on the number of nodes and information on the number of hops connected, the node capability information may include only any one of them according to the implementation.
  • the node capability information may be formed in a size of 1 byte or less.
  • each node checks the node capability of the other node in the authentication step.
  • Authentication request message A node (eg, node 120) that transmits an authentication request checks the capability of the other node before transmitting the authentication request message, and transmits the authentication request message Authentication Request only to the node having the capability of connecting.
  • the node eg, AP 100
  • the AP 100 and the node 120 perform the process of confirming the capability of the other node.
  • the AP 100 and the node 120 confirm the capability of the other node between the nodes (node 120 and node 170). It is also possible to carry out the process.
  • FIG. 6 is a diagram illustrating a configuration of a central node for a connection establishment operation according to an embodiment of the present invention.
  • the AP 100 illustrated in FIGS. 2A to 4 functions as a central node is illustrated.
  • the configuration shown in FIG. 6 is for illustration only, and other configurations may be used without departing from the scope of the present invention.
  • the AP 100 includes a bus 310, a processor 320, a memory 330, an input module 340, and a communication module 350.
  • the bus 310 connects the components included in the AP 100 with each other and transfers communication between the components.
  • the processor 320 controls various functions related to the operation of the AP 100.
  • the processor 320 may decode an instruction received from at least one other component included in the AP 100 through the bus 310, and execute an operation or data processing according to the decoded instruction.
  • the processor 320 executes one or more programs stored in the memory 330 to control a function for providing various services.
  • the processor 320 executes the connection setting program 334 stored in the memory 330 to perform the connection setting operation according to the embodiment of the present invention.
  • the processor 320 executes the probe processing program 334A to generate and transmit / receive a probe request / response message.
  • the processor 320 executes the node capability check program 334B to check the capability of the other node.
  • the processor 320 executes an authentication processing program 334C to generate, transmit and receive an authentication request / response message.
  • the processor 320 executes the group information processing program 334D to generate, transmit and receive a group information request / response message.
  • the memory 330 stores instructions or data 332 received from or generated by at least one component included in the AP 100.
  • the memory 330 stores a group list including information about nodes configured to be connected to the AP 100.
  • the memory 330 also includes a connection setting program module 334.
  • the connection establishment program module 334 includes a probe processing program 334A, a node capability check program 334B, an authentication processing program 334C, and a group information processing program 334D associated with triggering a connection establishment.
  • the connection establishment program module 334 may be configured with at least one of software, firmware, and hardware.
  • the input module 340 transmits a command or data generated by a user selection or gesture to the processor 320 or the memory 330 through the bus 310.
  • the input module 340 may include at least one of a physical key button, a physical keypad, a touch sensor, a proximity sensor, an acceleration sensor, a microphone, and a mouse.
  • the communication module 350 performs a communication connection between the AP 100 and at least one other node.
  • the communication module 350 may support a short range communication protocol (eg, Wi-fi, Bluetooth (BT), or near field communication (NFC).)
  • the communication module 350 may perform network communication (eg, Internet, LAN (local). It may support an area network (WAN), a wire area network (WAN), a telecommunication network, a cellular network, a satellite network, or a plain old telephone service (POTS).
  • FIG. 7 is a diagram illustrating a configuration of a general node for a connection establishment operation according to an embodiment of the present invention.
  • a configuration example of nodes 120 and 170 serving as the relay node and the target node illustrated in FIGS. 2A to 4 is shown.
  • the configuration shown in FIG. 7 is for illustration only, and other configurations may be used without departing from the scope of the present invention.
  • the nodes 120 and 170 include a bus 410, a processor 420, a memory 430, an input module 440, and a communication module 450.
  • the bus 410 connects the components included in the nodes 120 and 170 with each other and transfers communication between the components.
  • the processor 420 controls various functions related to the operation of the nodes 120 and 170.
  • the processor 420 may decode an instruction received from at least one other component included in the nodes 120 and 170 through the bus 410, and execute an operation or data processing according to the decoded instruction.
  • the processor 420 executes one or more programs stored in the memory 430 to control a function for providing various services.
  • the processor 420 may execute the connection setting program 434 stored in the memory 430 to perform a connection setting operation according to an embodiment of the present invention.
  • the processor 420 generates a probe request / response message by executing the probe processing program 434A.
  • the processor 420 executes the node capability check program 434B to check the capability of the other node.
  • the processor 420 generates an authentication request / response message by executing an authentication processing program 434C.
  • the processor 420 generates a group and an AP information request / response message by executing the group / AP information processing program 434D.
  • the memory 430 stores instructions or data 432 received from or generated by at least one component included in the nodes 120 and 170. For example, the memory 430 receives and stores a group list including information on nodes configured to be connected to the AP 100 from the AP 100.
  • the memory 430 also includes a connection setting program module 434.
  • the connection establishment program module 434 includes a probe processing program 434A, a node capability check program 434B, an authentication processing program 434C, and a group / AP information processing program 434D associated with triggering a connection establishment.
  • the connection establishment program module 434 may be configured with at least one of software, firmware, and hardware.
  • the input module 440 transfers a command or data generated by a user selection or gesture to the processor 420 or the memory 430 through the bus 410.
  • the input module 440 may include at least one of a physical key button, a physical keypad, a touch sensing sensor, a proximity sensor, an acceleration sensor, a microphone, and a mouse.
  • the communication module 450 performs a communication connection between the AP 100 and / or at least one other node.
  • the communication module 450 may support a short range communication protocol (eg, Wi-fi, Bluetooth (BT), or near field communication (NFC).)
  • the communication module 450 may perform network communication (eg, Internet, LAN (local). It may support an area network (WAN), a wire area network (WAN), a telecommunication network, a cellular network, a satellite network, or a plain old telephone service (POTS).
  • WAN area network
  • WAN wide area network
  • WAN wide area network
  • WAN wide area network
  • POTS plain old telephone service
  • FIG. 8 is a diagram illustrating a processing flow of a target node for a connection establishment operation according to an embodiment of the present invention.
  • the target node may be node 170 as a new subscriber shown in FIGS. 2A-4.
  • This processing flow corresponds to the processing flow shown in FIG. 3B.
  • the flow shown in FIG. 8 is for illustration only, and other flows may be used without departing from the scope of the present invention.
  • the target node searches for neighboring nodes in a preset transmission area (eg, 1 hop) among the nodes in the group 10 shown in FIG. 1.
  • the target node selects an AP if a central node, that is, an AP, is found among the nodes in the transmission area.
  • the target node selects a node having the largest received signal strength among nodes in the transmission area when the AP is not found among the nodes in the transmission area.
  • the target node may be any node considering the number of currently connected nodes and hops from the central node among the nodes in the transmission area when the AP is not discovered among the nodes in the transmission area.
  • the target node may be any node considering the number of currently connected nodes and the number of hops from the source node among the nodes in the transmission area when the AP is not discovered among the nodes in the transmission area. Select.
  • step S404 the target node checks whether the discovered neighbor node is an AP. If the discovered neighbor node is an AP, in step S406, the target node performs a connection operation to the discovered AP. For example, in step S406, the target node performs a PBC triggering and node capability checking process with the discovered AP 100 as in step S100 of FIG. 3B. In step S408, the target node transmits a group information request message to the AP 100. In step S410 the target node receives a group information response message from the AP 100.
  • step S412 the target node checks whether a general node registered in another group is searched. If the found neighbor node is a general node, in step S414, the target node performs a connection operation to the found general node (or relay node). For example, in step S414, the target node performs a PBC triggering and node capability checking process with the discovered node 120 as in step S300 of FIG. 3B.
  • step S416 the target node transmits an AP information request message to the relay node.
  • step S4108 the target node receives the AP information response message from the relay node.
  • step S420 the target node transmits a group information request message to the relay node.
  • the target node receives the group information response message from the relay node.
  • FIG. 9 is a diagram illustrating a processing flow of a relay node for a connection establishment operation according to an embodiment of the present invention.
  • the relay node may be node 120 shown in FIGS. 2A-4.
  • This processing flow corresponds to steps S310 to S360 shown in FIG. 3B.
  • the flow shown in FIG. 9 is for illustration only, and other flows may be used without departing from the scope of the present invention.
  • step S502 the relay node receives a message. If it is determined in step S504 that the message received is an AP information request message, in step S510 the relay node transmits an AP information response message to the target node as a new subscriber. If it is determined in step S506 that the received message is a group information request message, in step S512 the relay node transmits a central node (or AP) group information request message. If it is determined in step S508 that the message received is a group information response message, in step S514 the relay node transmits the group information response message to the target node.
  • FIG. 10 is a diagram illustrating a processing flow of a central node for a connection establishment operation according to an embodiment of the present invention.
  • the central node may be the AP 100 shown in FIGS. 2A-4.
  • This processing flow corresponds to steps S210 and S220, or steps S340 and S350 shown in FIG. 3B.
  • the flow shown in FIG. 10 is for illustration only, and other flows may be used without departing from the scope of the present invention.
  • a central node receives a group information request message from a relay node or a target node.
  • the central node updates the group list by adding identifier (ID) information of the transmitting node (or target node) to the group list.
  • the central node transmits a group information response message including the updated group list to the relay node or the target node.
  • FIG. 11 is a diagram illustrating an example of a connection establishment operation according to an embodiment of the present invention. This figure corresponds to a wireless communication system having the configuration as shown in FIG.
  • the configuration shown in FIG. 11 is for illustration only, and other configurations may be used without departing from the scope of the present invention.
  • node 170 searches for nodes existing within a preset transmission area.
  • the node 170 receives the received signal strength among the discovered nodes. Selects the largest node. For example, if the received signal strength from the AP2 120 is -80 dBm, the received signal strength from the GO1 130 is -35 dBm, and the received signal strength from the AP3 160 is -60 dBm, the node 170 has the largest received signal strength.
  • the node GO1 is selected, and thus a connection with the selected node GO1 130 is established.
  • FIG. 12 is a diagram illustrating another example of a connection establishment operation according to an embodiment of the present invention. This figure corresponds to a wireless communication system having the configuration as shown in FIG.
  • the configuration shown in FIG. 12 is for illustration only, and other configurations may be used without departing from the scope of the present invention.
  • node 170 searches for nodes existing within a preset transmission area.
  • the generic nodes 120, 130, and 160 are discovered, that is, when a probe response message is received from the AP2 120, the GO (Group Owner) 1 130, and the AP3 160, the node 170 receives the number of connected nodes and the source node. Considering the number of hops of the node, the node selected among the discovered nodes with the smallest number of hops from the source node is selected.
  • the number of nodes connected to AP2 120 is 1, the number of hops from source node 150 to AP2 120 is 3, the number of nodes connected to GO1 130 is 0, the number of hops from source node 150 to GO1 130 is 4, If the number of nodes connected to AP3 130 is zero and the number of hops from source node 150 to AP3 130 is three, then node 170 selects AP3 160, which is the node with the fewest connected nodes and the least number of hops from source node 150. Accordingly, the connection with the selected node AP3 160 is made.
  • the reason for selecting the node with the smallest number of connected nodes and the number of hops from the source node among the discovered nodes is that the service area is expanded to a multi-hop network topology as shown in FIG. Even if it is for the configuration of the network with the best performance.
  • network traffic can be minimized even in a situation where a plurality of wireless devices simultaneously transmit data and forward data through multi-hop in a WLAN system.
  • the node 170 may select the node having the smallest number of connected nodes and the number of hops from the central node 100 among the searched nodes in consideration of the number of connected nodes and the number of hops from the central node 100.
  • FIG. 13 is a diagram illustrating an example of a processing flow of a target node for a connection establishment operation according to an embodiment of the present invention.
  • FIG. This example corresponds to an example in which, when a plurality of general nodes in the group are discovered, the target node selects any one of the discovered nodes based on the received signal strength.
  • the processing flow shown here corresponds to the example shown in FIG.
  • the flow shown in FIG. 13 is for illustration only, and other flows may be used without departing from the scope of the present invention.
  • step S402 the target node searches for neighboring nodes in a preset transmission area (eg, 1 hop) among the nodes in the group 10 shown in FIG. 1.
  • a preset transmission area eg, 1 hop
  • step S404 the target node checks whether the discovered neighbor node is an AP. If the discovered neighbor node is an AP, in step S406, the target node performs a connection operation to the discovered AP. For example, in step S406, the target node performs a PBC triggering and node capability checking process with the discovered AP 100 as in step S100 of FIG. 3B. In step S408, the target node transmits a group information request message to the AP 100. In step S410 the target node receives a group information response message from the AP 100.
  • step S404 the target node checks whether a general node registered in another group is searched. If the discovered neighbor node is a general node, in step S432, the target node checks whether there are several discovered nodes. If the target node has multiple discovered nodes, the target node performs step S434 and then proceeds to step S414. On the other hand, the target node proceeds directly to step S414 when there are not several nodes searched, that is, one.
  • step S434 the target node selects a node having the largest received signal strength among the searched nodes.
  • the target node performs a connection operation to the found general node (or relay node). For example, in step S414, the target node performs a PBC triggering and node capability checking process with the discovered node 120 as in step S300 of FIG. 3B.
  • the target node transmits an AP information request message to the relay node.
  • the target node receives the AP information response message from the relay node.
  • the target node transmits a group information request message to the relay node.
  • the target node receives the group information response message from the relay node.
  • FIG. 14 is a diagram illustrating another example of a processing flow of a target node for a connection establishment operation according to an embodiment of the present invention. This example corresponds to an example of selecting one node among discovered nodes based on the number of nodes to which the target node is connected and the number of hops from the AP, which is the central node, when a plurality of general nodes in the group are discovered.
  • the flow shown in FIG. 14 is for illustration only, and other flows may be used without departing from the scope of the present invention.
  • step S402 the target node searches for neighboring nodes in a preset transmission area (eg, 1 hop) among the nodes in the group 10 shown in FIG. 1.
  • a preset transmission area eg, 1 hop
  • step S404 the target node checks whether the discovered neighbor node is an AP. If the discovered neighbor node is an AP, in step S406, the target node performs a connection operation to the discovered AP. For example, in step S406, the target node performs a PBC triggering and node capability checking process with the discovered AP 100 as in step S100 of FIG. 3B. In step S408, the target node transmits a group information request message to the AP 100. In step S410 the target node receives a group information response message from the AP 100.
  • step S404 the target node checks whether a general node registered in another group is searched. If the discovered neighbor node is a general node, in step S432, the target node checks whether there are several discovered nodes. The target node proceeds to step S442 when there are several discovered nodes. On the other hand, the target node proceeds to step S414 when there are not several nodes searched, that is, one.
  • the target node selects a node having the smallest number of connected nodes among the searched nodes.
  • the target node checks whether there are several nodes having the smallest number of connected nodes. When there are several nodes with the smallest number of connected nodes, in step S446, the target node selects the minimum number of hops from the central node, that is, the AP. On the other hand, the target node proceeds to step S414 when there are not several nodes having the smallest number of connected nodes, that is, one node.
  • step S448 the target node checks whether there are several nodes with the minimum number of hops from the AP. If there are several nodes with the minimum number of hops from the AP, in step S450, the target node selects the node having the largest received signal strength, and then proceeds to step S414. On the other hand, the target node proceeds to step S414 when the minimum number of hops is not several nodes, that is, one node.
  • the target node performs a connection operation to the found general node (or relay node). For example, in step S414, the target node performs a PBC triggering and node capability checking process with the discovered node 120 as in step S300 of FIG. 3B.
  • the target node transmits an AP information request message to the relay node.
  • the target node receives the AP information response message from the relay node.
  • the target node transmits a group information request message to the relay node.
  • the target node receives the group information response message from the relay node.
  • FIG. 15 is a diagram illustrating still another example of a processing flow of a target node for a connection establishment operation according to an embodiment of the present invention.
  • This example corresponds to an example of selecting one node among discovered nodes based on the number of nodes to which the target node is connected and the number of hops from the source node when a plurality of general nodes in the group are discovered.
  • the processing flow shown here corresponds to the example shown in FIG. Referring to FIG. 15, in step S402, the target node searches for neighboring nodes in a preset transmission area (eg, 1 hop) among the nodes in the group 10 shown in FIG. 1.
  • the flow shown in FIG. 15 is for illustration only, and other flows may be used without departing from the scope of the present invention.
  • step S404 the target node checks whether the discovered neighbor node is an AP. If the discovered neighbor node is an AP, in step S406, the target node performs a connection operation to the discovered AP. For example, in step S406, the target node performs a PBC triggering and node capability checking process with the discovered AP 100 as in step S100 of FIG. 3B. In step S408, the target node transmits a group information request message to the AP 100. In step S410 the target node receives a group information response message from the AP 100.
  • step S404 the target node checks whether a general node registered in another group is searched. If the discovered neighbor node is a general node, in step S432, the target node checks whether there are several discovered nodes. The target node proceeds to step S442 when there are several discovered nodes. On the other hand, the target node proceeds to step S414 when there are not several nodes searched, that is, one.
  • the target node selects a node having the smallest number of connected nodes among the searched nodes.
  • the target node checks whether there are several nodes having the smallest number of connected nodes. If there are several nodes with the smallest number of connected nodes, in step S447, the target node selects the node with the minimum number of hops from the source node. On the other hand, the target node proceeds to step S414 when there are not several nodes having the smallest number of connected nodes, that is, one node.
  • step S448 the target node checks whether there are several nodes with the minimum number of hops from the source node. If there are several nodes with the minimum number of hops from the source node, the target node selects the node having the largest received signal strength in step S450 and then proceeds to step S414. On the other hand, the target node proceeds to step S414 when the minimum number of hops is not several nodes, that is, one node.
  • the target node performs a connection operation to the found general node (or relay node). For example, in step S414, the target node performs a PBC triggering and node capability checking process with the discovered node 120 as in step S300 of FIG. 3B.
  • the target node transmits an AP information request message to the relay node.
  • the target node receives the AP information response message from the relay node.
  • the target node transmits a group information request message to the relay node.
  • the target node receives the group information response message from the relay node.
  • the target node selects and connects nodes in a group to be connected, and transmits and receives group information. Once the target node discovers the neighboring node, if the AP corresponding to the central node is found, the target node attempts to connect to the AP unconditionally. Because the central node is in a one-hop relationship corresponding to the minimum hop even though the received signal strength is weaker than the general nodes in the other groups, the total amount of traffic is generated by minimizing the total number of hops in the multi-hop network. This is because it is desirable to reduce.
  • each target node in order to provide a stable service, is connected to a node having the minimum number of WLAN devices supporting the connection rather than connecting to a node corresponding to an optimal path.
  • Connect in addition, embodiments of the present invention may connect to a node having a minimum number of hops from a central node or source node.
  • the received signal strength is a measurement parameter between two nodes in proportion to the distance.
  • the number of nodes currently connected to each general node and the number of hops from the central node are parameters that can measure the amount of traffic on the entire network and the service support capability of the upper node to which the node is connected when operating a multihop topology.
  • CSMA / CA method when selecting a node to be connected, the number of connected nodes and the number of hops from the central node in checking whether the wireless device satisfies the quality of service to be provided by the WLAN device. Can be a more useful value.
  • embodiments of the present invention basically propose a scheme for providing hop count information from an AP (FIG. 14), and considering hoping to add a function of dynamically changing a multihop topology, hop count information from a source node is provided. It also proposes a method for providing (Fig. 15).
  • FIG. 16 is a diagram showing the configuration of a wireless communication system according to another embodiment of the present invention.
  • the configuration shown in FIG. 16 is for illustration only, and other configurations may be used without departing from the scope of the present invention.
  • a wireless communication system includes a network group 10 formed by a central node 100 and nodes 110-160 located in a predetermined area, and a node as a new enrollee attempting to establish a connection to the network group 10. 7 170, node 8 180, and node 9 190.
  • Nodes 110-160 are connected to the central node 100 and already form a network group 100.
  • Node 1 110 has established a direct connection to the central node 100
  • Node 2 120 has established a direct connection to the central node 100
  • Node 4 140 has established a direct connection to the central node 100
  • Node 6 160 has established a direct connection to the central node 100. It became.
  • Node 3 130 is connected to the central node 100 through node 2 120 and node 5 150 is connected to the central node 100 through node 4 140.
  • node 7 170, node 8 180 and node 9 190 are connected to network group 10 by a multiple triggering scheme.
  • the multiple triggering scheme is a technique for establishing a connection only when a plurality of nodes are triggered within a predefined walk time. While a connection is made to one node, the other node is waiting or retrying.
  • Multiple triggering techniques can be used when a user connects to multiple devices (or nodes). For example, if a user waits after triggering three target nodes 170, 180, 190 as a central node 100 and a new subscriber, the target nodes 170, 180, 190 are automatically established.
  • Such multiple triggering techniques include the embodiments illustrated in FIGS. 12 and 13. 12 and 13, the user will be described as an example of PBC triggering for connection establishment, but the scope of the present invention is not necessarily limited thereto.
  • FIG. 17 is a view for explaining an example of a connection establishment operation according to another embodiment of the present invention. This embodiment corresponds to a technique in which other nodes retry when establishing a connection by multiple triggering.
  • a plurality of target nodes 170, 180, 190 are PBC triggered at once by a user.
  • the AP 100 receives a PBC connection request from multiple nodes 170, 180, and 190.
  • the AP 100 selects one of the nodes 170, 180, and 190 (eg, the node 170) that has requested the connection, and performs the PBC connection.
  • the nodes 180, 190 retransmit the PBC connection request if they do not receive a PBC connection progress message (eg, AP Info. Response or Group Info. Response) from the AP 100 for a specific time after transmitting the PBC connection request.
  • a PBC connection progress message eg, AP Info. Response or Group Info. Response
  • the number of PBC connection retransmissions may be predetermined, and each target node retries the PBC connection up to the maximum number of times.
  • FIG. 18 is a view for explaining another example of a connection establishment operation according to another embodiment of the present invention. This embodiment corresponds to a technique in which other nodes are waiting when a node is connected by multi-triggering.
  • a plurality of target nodes 170, 180, 190 are PBC triggered at once by a user.
  • the AP 100 receives a PBC connection request from multiple nodes 170, 180, and 190.
  • the AP 100 selects one of the nodes 170, 180, and 190 (eg, the node 170) that has requested the connection, and performs the PBC connection.
  • the AP 100 stores a PBC connection request of the remaining nodes (eg, nodes 180 and 190).
  • the AP 100 selects one of the stored PBC connection requests and proceeds with the PBC connection.
  • the nodes 180, 190 wait until they receive a PBC connection progress message (eg, AP Info. Response or Group Info. Response) from the AP 100 after transmitting the PBC connection request.
  • a PBC connection progress message eg, AP Info. Response or Group Info. Response
  • a wireless communication system including a group formed by at least one central node 100
  • the central node 100 requests a connection to the group by two or more target nodes within a predetermined time.
  • Communication module 350 for receiving;
  • a processor 320 configured to sequentially connect the target nodes to the group.
  • the processor 320 selects a first node among the target nodes to connect the first node to the group, and then selects a second node except the first node among the target nodes to associate the second node with the group. Set up the connection. For example, the processor 320 selects the second node in response to receiving a signal corresponding to the connection establishment request by the second node.
  • the processor 320 stores information about target nodes, selects a first node among target nodes, and connects the first node to a group. After connecting the first node to the group, the processor 320 selects a second node except the first node among the target nodes from the information on the target nodes, and connects the second node to the group.
  • the processor 320 selects any one of the target nodes and adds the selected target node to the group in response to receiving the group information request signal through the communication module 350 when establishing the connection with the selected target node to the group. Node information indicating a node connected to the group is updated.
  • the communication module 350 transmits a group information response signal including the updated node information.
  • the processor 320 connects the selected target node to the group. For example, checking whether the selected target node is a target node capable of joining the group may be performed by a central node that triggers a connection request by the user or a general node joined to the group.
  • the communication module 350 provides, for each of the nodes included in the group, at least one of information about the number of connected nodes and information about the number of hops from the central node or source node in the group to the target nodes. Perform more actions.
  • a target node 170 requesting to connect to a group within a predetermined time is located within the communication module 450 and a preset transmission area.
  • the processor 420 generates an information request signal requesting a connection to a group, transmits the information request signal to a node discovered through the communication module 450, and communicates an information response signal including information about nodes connected to the group. Receive from node discovered through module 450.
  • the processor 420 retransmits the information request signal to the discovered node through the communication module 450 when the information response signal is not received from the discovered node for a specific time.
  • the processor 420 transmits the group information request signal to the central node through the communication module 450 and transmits the group information response signal corresponding to the group information request signal to the communication module 450. Received from the discovered central node.
  • the group information response signal includes node information indicating a node connected to the group.
  • the processor 420 selects one general node based on the number of nodes connected to each general node, and establishes a connection to a group through the selected node. Try.
  • the processor 420 may select one generic node based on the number of nodes connected to each generic node and the number of hops from a central node or a source node in the group. Selects and attempts to connect to the group via the selected node.
  • the processor 420 may include the number of nodes connected to each general node, the number of hops from a central node or a source node in the group to each general node; Based on the strength of the received signal from each general node, one of the general nodes is selected, and an attempt is made to connect to the group through the selected node.
  • the processor 420 when the general node is found within the set range, the processor 420 generates a central node information request signal for requesting information of the central node, transmits the generated central node information request signal to the general node through the communication module 450, Receive the corresponding central node information response signal from the general node through the communication module 450, generate the group information request signal to the general node through the communication module 450, and communicate the group information response signal corresponding to the group information request signal. Receive from the generic node via module 450.
  • the group information response signal includes node information indicating a node connected to the group.
  • processor 420 attempts to connect to the group via the discovered node when it is determined that the group can join.
  • the check as to whether or not the group can be joined is performed by a node different from the discovered node included in the group or a discovered node triggering a connection request by the user.
  • the general node 120 is assigned to a group from at least one target node 170 existing within a preset transmission area.
  • a communication module 450 for receiving a connection request of the communication module 450;
  • a processor 420 that connects and sets the target node 170 to the group through communication with the central node 100.
  • the processor 420 receives a central node information request signal for requesting information of the central node from the target node through the communication module 450, generates a central node information response signal corresponding to the central node information request signal, and generates a communication module. Transmits to the target node through 450, receives the group information request signal from the target node through communication module 450, generates a group information request signal in response to the received group information request signal, and transmits to the central node through communication module 450. And a group information response signal generated by the central node in response to the group information request signal being received, including the node information added with the target node from the central node through the communication module 450, and receiving the received group information response signal. Is transmitted to the target node through the communication module 450.
  • the processor 420 when the target node is a target node that can join the group, the processor 420 establishes a connection with the target node to the group through communication with the central node. Checking whether the target node is a target node capable of joining the group may be performed by a general node that triggers a connection request by the user or another node joined to the group.
  • the communication module 450 further performs an operation of providing the target node with at least one of information about the number of connected nodes and information about the number of hops from a source node in a central node or group.
  • embodiments of the present invention provide convenience of automatically establishing a connection when a user only triggers to establish a connection when establishing a plurality of wireless devices (or nodes) in a wireless communication system.
  • a user when connecting two or more target nodes within a preset time, it is not necessary to wait for a predetermined walk time for each target node, so the time required when connecting two or more target nodes is set. Can be reduced.
  • the connection setup can be made by triggering any device in the network group.
  • embodiments of the present invention can reliably receive all services in a multi-hop network by considering the number of nodes currently connected and the number of hops from a central node or a source node in the process of selecting a node to be connected among the discovered nodes. You can do that.
  • connection establishment operation is performed in the network group having the configuration shown in Figures 1 and 11 as an example, but the protection scope of the present invention is not necessarily limited to this and various forms
  • connection establishment operation according to embodiments of the present invention may also be performed by the network group of.
  • embodiments of the present invention have been described as being performed by nodes including components as shown in FIGS. 6 and 7, respectively, embodiments of the present invention are also performed by nodes configured in other forms.
  • Connection establishment may be performed in the same way.
  • the connection establishment operation according to embodiments of the present invention may be implemented by a single processor.
  • program instructions for performing various computer-implemented operations may be recorded on a computer-readable medium.
  • the computer-determinable medium may include program instructions, data files, data structures, and the like, alone or in combination.
  • the program instructions may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those skilled in the art.
  • Examples of computer readable recording media include magnetic media such as hard disks, floppy disks and magnetic tape, optical recording media such as CD-ROMs or DVDs, magnetic-optical media such as floppy disks and ROMs.
  • Hardware devices specifically configured to store and execute program instructions, such as memory, RAM, flash memory, and the like.
  • 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.
  • a computer readable recording medium storing the computer program is also included in the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the claims below but also by the equivalents of the claims.

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Abstract

La présente invention concerne, dans certains modes de réalisation, un procédé et un dispositif destinés à connecter facilement et rapidement des dispositifs sans fil dans un système de communications sans fil. Un procédé selon lequel au moins un nœud central fonctionne dans un système de communications sans fil comprenant un groupe formé par le nœud central, comporte les étapes consistant à: détecter au moins deux nœuds visés qui demandent une connexion au groupe, dans la limite d'un temps prédéterminé, et configurer séquentiellement une connexion des nœuds visés au groupe.
PCT/KR2014/009832 2013-10-21 2014-10-20 Procédé et dispositif de configuration de connexion d'un système de communications sans fil WO2015060597A1 (fr)

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