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WO2015069074A1 - Point d'accès, station et procédé de configuration d'accès entre un point d'accès et une station - Google Patents

Point d'accès, station et procédé de configuration d'accès entre un point d'accès et une station Download PDF

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Publication number
WO2015069074A1
WO2015069074A1 PCT/KR2014/010736 KR2014010736W WO2015069074A1 WO 2015069074 A1 WO2015069074 A1 WO 2015069074A1 KR 2014010736 W KR2014010736 W KR 2014010736W WO 2015069074 A1 WO2015069074 A1 WO 2015069074A1
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WIPO (PCT)
Prior art keywords
information
connection
station
priority
condition
Prior art date
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PCT/KR2014/010736
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English (en)
Korean (ko)
Inventor
손주형
곽진삼
오현오
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Intellectual Discovery Co Ltd
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Intellectual Discovery Co Ltd
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Priority claimed from KR1020140038287A external-priority patent/KR20150054624A/ko
Application filed by Intellectual Discovery Co Ltd filed Critical Intellectual Discovery Co Ltd
Priority to CN201480072907.7A priority Critical patent/CN105917704A/zh
Publication of WO2015069074A1 publication Critical patent/WO2015069074A1/fr
Priority to US15/151,988 priority patent/US20160255573A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Definitions

  • the present invention relates to a method for establishing a connection between an access point and a station.
  • Wireless LAN technology is a technology that enables mobile devices such as smart phones, smart pads, laptop computers, portable multimedia players, embedded devices, and the like to wirelessly connect to the Internet based on wireless communication technology at a short range.
  • IEEE 802.11 Institute of Electrical and Electronics Engineers 802.11 to support the speed of 1-2Mbps through frequency hopping, spread spectrum, infrared communication, etc. By applying Orthogonal Frequency Division Multiplex, up to 54Mbps can be supported.
  • IEEE 802.11 improves Quality of Service (QoS), access point (AP) protocol compatibility, security enhancement, radio resource measurement, and wireless access vehicular for vehicle environments. Standards of various technologies such as environment, fast roaming, mesh network, interworking with external network, and wireless network management are being put into practice or being developed.
  • IEEE 802.11b supports communication speeds up to 11Mbps using the 2.4GHz band.
  • IEEE 802.11a commercialized after IEEE 802.11b, reduces the impact of interference compared to the frequency of the congested 2.4 GHz band by using the frequency of the 5 GHz band instead of the 2.4 GHz band. Up to 54Mbps.
  • IEEE 802.11a has a shorter communication distance than IEEE 802.11b.
  • IEEE 802.11g like IEEE 802.11b, uses a frequency of 2.4 GHz band to realize a communication speed of up to 54 Mbps and satisfies backward compatibility, which has received considerable attention. Is in the lead.
  • IEEE 802.11n is a technical standard established to overcome a limitation on communication speed, which has been pointed out as a weak point in WLAN. IEEE 802.11n aims to increase the speed and reliability of networks and to extend the operating range of wireless networks. More specifically, IEEE 802.11n supports High Throughput (HT) with data throughput of up to 540 Mbps and also uses multiple antennas at both the transmitter and receiver to minimize transmission errors and optimize data rates. It is based on Multiple Inputs and Multiple Outputs (MIMO) technology. In addition, the standard not only uses a coding scheme for transmitting multiple duplicate copies to increase data reliability, but may also use orthogonal frequency division multiplex (OFDM) to increase the speed.
  • OFDM orthogonal frequency division multiplex
  • IEEE 802.11ac supports a wide bandwidth (80MHz to 160MHz) at 5GHz frequency.
  • the IEEE 802.11ac standard is defined only in the 5 GHz band, but for backward compatibility with existing 2.4 GHz band products, early 11ac chipsets will also support operation in the 2.4 GHz band.
  • 802.11ac supports bandwidths from 2.4GHz up to 40MHz.
  • the wireless LAN speed of multiple terminals can be at least 1 Gbps and the maximum single link speed can be at least 500 Mbps.
  • IEEE 802.11ad is a method of transmitting data using a 60 GHz band instead of the existing 2.5 GHz / 5 GHz.
  • IEEE 802.11ad is a transmission standard that uses beamforming technology to provide speeds of up to 7Gbps, and is suitable for high bitrate video streaming such as large data or uncompressed HD video.
  • the 60 GHz frequency band is difficult to pass through obstacles, and thus can be used only between devices in a short space.
  • Korean Patent No. 0643766 (name of the invention: a fast handover method optimized for an IEEE 802.11 network) classifies APs based on signal strengths of neighboring APs and determines an AP to perform handover based on this. Initiating the process.
  • the present invention is to solve the above-described problems of the prior art, and provides a connection setting method that can be set so that the access time point between the access point and the station are distributed to each other.
  • a method for establishing a connection between an access point and a station includes the steps of the access point transmits a communication setup message to one or more stations and the communication setup message The access point performs a connection setup according to the connection request of the received station, wherein the communication setup message includes information on the connection priority condition of each station.
  • a method for establishing a connection between an access point and a station includes: receiving, by the station, a communication setting message transmitted by the access point, and information on a priority condition of a station included in the communication setting message; Reading a request for access to the access point according to the information on the priority condition of the station.
  • the access point apparatus includes a memory for storing a program for establishing a connection with a station, at least one communication interface card, and a processor for executing the program stored in the memory.
  • a communication setting message is transmitted to one or more stations, and connection setting is performed according to a connection request of the station, wherein the communication setting message includes information on the connection priority condition of each station.
  • the station apparatus includes a memory for storing a program for establishing a connection with an access point, one or more communication interface cards, and a processor for executing the program stored in the memory. Receiving a communication setting message transmitted by the access point according to the execution of the program, reading information on the priority condition of the station included in the communication setting message, and according to the information on the priority condition of the station Request a connection to.
  • stations receiving the link establishment congestion information distribute and execute the link establishment request, thereby providing an efficient wireless link establishment method.
  • the present invention can be used in various communication devices, such as a station using a wireless LAN, a station using a cellular communication.
  • FIG. 1 illustrates a WLAN system according to an embodiment of the present invention.
  • FIG. 2 illustrates an independent BSS, which is a wireless LAN system according to another embodiment of the present invention.
  • FIG. 3 is a block diagram showing the configuration of a station according to an embodiment of the present invention.
  • FIG. 4 is a block diagram showing the configuration of an AP according to an embodiment of the present invention.
  • FIG. 5 schematically illustrates a step in which a STA establishes a link with an AP according to an embodiment of the present invention.
  • FIG. 6 illustrates a passive scanning method of an STA according to an embodiment of the present invention.
  • FIG 7 illustrates an active scanning method of an STA according to an embodiment of the present invention.
  • FIG. 8 is a diagram for describing information on a connection priority condition corresponding to an embodiment of the present invention.
  • FIG. 9 illustrates a structure of a beacon message that an AP periodically transmits to STAs according to an embodiment of the present invention.
  • FIG. 10 illustrates a structure of a probe request message for requesting access of an AP to access the AP.
  • FIG. 11 illustrates a structure of a probe response message transmitted by an AP that receives a probe request message according to an embodiment of the present invention.
  • FIG. 12 is a flowchart illustrating an access procedure of an STA and an AP according to an embodiment of the present invention.
  • FIG 13 illustrates an internal hierarchical structure of an STA according to an embodiment of the present invention.
  • FIG. 14 illustrates a passive scanning procedure according to an embodiment of the present invention.
  • 15 is a diagram illustrating an active scanning procedure according to an embodiment of the present invention.
  • FIG. 16 illustrates a scanning procedure between an AP and a STA including a plurality of network interface card modules according to an embodiment of the present invention.
  • 17 is a diagram illustrating an access procedure between an AP and a STA according to an embodiment of the present invention.
  • FIG. 1 illustrates a WLAN system according to an embodiment of the present invention.
  • the WLAN system includes one or more basic service sets (BSSs), which represent a set of devices that can successfully synchronize and communicate with each other.
  • BSSs basic service sets
  • the BSS may be classified into an infrastructure BSS (Independent BSS) and an Independent BSS (IBSS), and FIG. 1 illustrates an infrastructure BSS.
  • the infrastructure BSSs BSS1 and BSS2 are configured to provide one or more stations STA-1, STA-2, STA-3, STA-4, STA-5, and Distribution Service.
  • a distribution system (DS) that connects access points (PCP / AP-1, PCP / AP-2) that are providing stations, and a plurality of access points (PCP / AP-1, PCP / AP-2) Include.
  • a station is any device that includes a medium access control (MAC) compliant with the IEEE 802.11 standard and a physical layer interface to a wireless medium, and broadly an access point (AP). ) And a non-access point Non-AP Station (STA).
  • the station for wireless communication includes a processor and a transceiver, and may further include a user interface unit and a display unit according to an embodiment.
  • the processor generates a frame to be transmitted through the wireless network or processes the frame received through the wireless network, and performs various processing for controlling the station.
  • the transceiver is functionally connected to the processor and transmits and receives a frame through a wireless network for a station.
  • An access point is an entity that provides a connection to a distribution system (DS) via a wireless medium for a station coupled to it.
  • DS distribution system
  • an infrastructure BSS communication between STAs is in principle made through an AP.
  • the AP is used as a concept including a personal BSS coordination point (PCP), and is broadly used as a centralized controller, a base station (BS), a node-B, a base transceiver system (BTS), or a site. It can include all the concepts such as a controller.
  • the plurality of infrastructure BSSs may be interconnected through a distribution system (DS).
  • DS distribution system
  • the plurality of BSSs connected through the DS is called an extended service set (ESS).
  • STAs included in the ESS may communicate with each other, and STAs not connected to the AP within the same ESS may move from one BSS to another BSS while communicating seamlessly.
  • FIG. 2 illustrates an independent BSS, which is a wireless LAN system according to another embodiment of the present invention.
  • the same or corresponding parts as those of the embodiment of FIG. 1 will be omitted.
  • the BSS-3 shown in FIG. 2 is an independent BSS and does not include an AP, all stations STA-6 and STA-7 are not connected to the AP.
  • the independent BSS is not allowed to access the DS and forms a self-contained network.
  • the respective stations STA-6 and STA-7 may be directly connected to each other.
  • FIG. 3 is a block diagram showing the configuration of a station according to an embodiment of the present invention.
  • the STA 100 is a processor 110, one or more network interface card (NIC, Network Interface Card, 120), mobile communication module 130, user interface unit 140
  • NIC Network Interface Card
  • the display unit 150 and the memory 160 may be included.
  • the network interface card 120 is a module for performing a WLAN connection, and may be embedded in the STA 100 or externally provided.
  • the network interface card 120 may include a plurality of network interface card modules 120_1 to 120_n using different frequency bands.
  • the network interface card modules 120_1 to 120_n may include network interface card modules of different frequency bands such as 2.4 GHz, 5 GHz, and 60 GHz.
  • the STA 100 may include at least one network interface card module using a frequency band of 6 GHz or more and at least one network interface card module using a frequency band of 6 GHz or less.
  • Each network interface card module 120_1 to 120_n may perform wireless communication with an AP or an external STA according to a wireless LAN standard of a frequency band supported by the corresponding network interface card module 120_1 to 120_n.
  • the network interface card 120 operates only one network interface card module 120_1 to 120_n at a time or simultaneously multiple network interface card modules 120_1 to 120_n according to the performance and requirements of the STA 100. It can be operated.
  • the plurality of network interface card modules 120_1 to 120_n of the STA 100 are illustrated separately from each other, and the MAC / PHY layers of the respective network interface card modules 120_1 to 120_n are different from each other. Operate independently.
  • the present invention is not limited thereto, and the STA 100 may be provided in a state in which network interface card modules of a plurality of different frequency bands are integrated into one chip.
  • the mobile communication module 130 transmits and receives a wireless signal with at least one of a base station, an external device, and a server using a mobile communication network.
  • the wireless signal may include various types of data such as a voice call signal, a video call call signal, or a text / multimedia message.
  • the user interface unit 140 includes various types of input / output means provided in the STA 100. That is, the user interface unit 140 may receive a user input using various input means, and the processor 110 may control the STA 100 based on the received user input. In addition, the user interface 140 may perform an output based on a command of the processor 110 using various output means.
  • the display unit 150 outputs an image on the display screen.
  • the display unit 150 may output various display objects such as a content executed by the processor 110 or a user interface based on a control command of the processor 110.
  • the memory 160 stores a control program used in the STA 100 and various data thereof.
  • a control program may include an access program required for the STA 100 to access an AP or an external STA.
  • the processor 110 of the present invention may execute various commands or programs and process data in the STA 100.
  • the processor 110 may control each unit of the STA 100 described above, and may control data transmission and reception between the units.
  • the processor 110 controls communication operations such as sector sweep signal transmission / reception and corresponding feedback signal transmission / reception of the STA 100.
  • the processor 110 executes a program for executing a connection with the AP stored in the memory 160 to receive a communication setting message transmitted by the AP, and to determine a priority condition of the STA 100 included in the communication setting message. Reads the information and requests access to the AP according to the information on the priority condition of the STA 100. Detailed description thereof will be described later.
  • the STA 100 illustrated in FIG. 3 is a block diagram according to an embodiment of the present invention, in which blocks marked separately represent logical elements of devices. Therefore, the elements of the above-described device may be mounted in one chip or in a plurality of chips according to the design of the device. In addition, in the embodiment of the present invention, some components of the STA 100, such as the mobile communication module 130, the user interface unit 140, the display unit 150, and the like, may be selectively provided in the STA 100. have.
  • FIG. 4 is a block diagram showing the configuration of an AP according to an embodiment of the present invention.
  • the AP 200 may include a processor 210, a network interface card (NIC) 220, and a memory 160.
  • NIC network interface card
  • FIG. 4 overlapping descriptions of parts that are the same as or corresponding to those of the STA 100 of FIG. 3 will be omitted.
  • the AP 200 includes a network interface card 220 for operating a BSS in at least one frequency band.
  • the network interface card 220 of the AP 200 may also include a plurality of network interface card modules 220_1 to 220_m using different frequency bands. That is, the AP 200 according to an embodiment of the present invention may include two or more network interface card modules of different frequency bands, such as 2.4 GHz, 5 GHz, and 60 GHz.
  • the AP 200 may include at least one network interface card module using a frequency band of 6 GHz or more, and at least one network interface card module using a frequency band of 6 GHz or less.
  • Each network interface card module 220_1 to 220_m may perform wireless communication with the STA according to a WLAN specification of a frequency band supported by the corresponding network interface card module 220_1 to 220_m.
  • the network interface card 220 operates only one network interface card module 220_1 to 220_m at a time or simultaneously multiple network interface card modules 220_1 to 220_m according to the performance and requirements of the AP 200. It can be operated.
  • the memory 260 stores a control program used in the AP 200 and various data according thereto.
  • a control program may include an access program for managing access of the STA.
  • the processor 210 may control each unit of the AP 200 and may control data transmission and reception between the units.
  • the processor 210 executes a program for executing a connection with a station stored in the memory 260, transmits a communication setting message to one or more STAs 100, and connects according to a connection request of the STA 100. While performing the setting, the communication setting message includes information on the access priority condition of each station. Detailed description thereof will be described later.
  • FIG. 5 schematically illustrates a step in which a STA establishes a link with an AP according to an embodiment of the present invention.
  • the scanning step is a step in which the STA 100 obtains access information of a BSS operated by the AP 200.
  • a passive scanning technique S101
  • S103 active scanning technique
  • S105 probe response from the AP
  • the STA 100 that has successfully received the radio access information in the scanning step transmits an authentication request (S107a), receives an authentication response (S107b), and performs an authentication procedure.
  • combining steps S109a and S109b may be performed, and additionally, 802.1X-based authentication (S111) and IP address acquisition through DHCP (S113) may be performed.
  • S111 802.1X-based authentication
  • S113 IP address acquisition through DHCP
  • FIG. 6 illustrates a passive scanning method of an STA according to an embodiment of the present invention.
  • the first STA 110 receives a beacon message periodically transmitted from the first AP 210 and the second AP 220 located nearby to receive wireless access information of each AP. Acquire.
  • FIG 7 illustrates an active scanning method of an STA according to an embodiment of the present invention.
  • the first STA 110 transmits a probe request message to obtain access information of an AP located nearby, and transmits a probe response message corresponding to the first AP 210. Received from the second AP 220 to obtain wireless access information of each AP.
  • FIG. 8 is a diagram for describing information on a connection priority condition corresponding to an embodiment of the present invention.
  • the access priority information is for distributing access times of respective STAs to the AP and may be defined as DILS (Differentiated Initial Link Setup) information.
  • DILS Differentiated Initial Link Setup
  • the DILS information has an effect of distributing the access time of each STA.
  • DILS information may include identifier information (Element ID), message length information (Length), access time information (ILS Time), initial connection category information (ILSC (initial link setup category) information).
  • element ID identifier information
  • Length message length information
  • IMS Time access time information
  • ILSC initial connection category information
  • the identifier information indicates a unique identifier of the DILS information
  • the message length information indicates the size of the entire message
  • the access time information indicates an access time allowed for the STA.
  • the initial access category information includes information on access conditions of STAs that allow access. An STA that satisfies the condition specified in the initial access category information may attempt to access for the time specified in the access time information, and an STA that does not satisfy the condition may attempt to access after the access time information is terminated.
  • Initial access category information among access priority information includes ILSC type information, ILS user priority information, station hardware identifier information (MAC address filter), and manufacturer specific access permission information (Vendor Specific Category). May be included.
  • link setup information (Link Setup Bursty) indicating the information on the combined state of each information or the priority of each information may be further included.
  • At least one of these conditions may be set, and it may be determined whether each corresponding bitmap is set to 1 in the ILSC type information.
  • the information about the priority for each user may exist in 1 byte in the DILS information.
  • the information about the priority of each user in the DILS information includes a first bit (ILS User Priority Bit 0), a second bit (ILS User Priority Bit 1), and a third bit (ILS User Priority Bit2) within 1 byte. ) May be indicated.
  • the AP sets arbitrary bits to 1 according to the priority of the STA that allows access among the first to third bits. If the STA that receives the DILS information in which the transmission priority of the frame stored in the transmission buffer of the STA to be accessed and the user priority bit corresponding thereto is set to 1, the STA may access.
  • the priority when the first bit is set to 1, the priority is highest when the second bit is set to 1, and when the third bit is set to 1, among the priority information for each user. It may be interpreted as having the lowest priority.
  • the first bit of the priority information for each user included in the DILS information is set to 1
  • an STA that is to transmit a frame having a transmission priority of 4 to 7 having a higher priority among the total frame transmission priorities of 0 to 7 is obtained. Satisfies the priority condition for each user.
  • the second bit of the priority information for each user included in the DILS information is set to 1, an STA that attempts to transmit a frame having a low priority of 0 to 3 may satisfy the priority condition for each user.
  • the STA may induce distribution of access.
  • the hardware identifier information (MAC Address Filter) of the station is set to 1 in the ILSC type information, the hardware identifier information (MAC Address Filter) of the station may exist in one byte in the DILS information. As such, the hardware identifier information of the station includes MAC address conditions of STAs that are allowed to access the AP.
  • Vendor Specific Category When Vendor Specific Category is set to 1 in the ILSC type information, Vendor Specific Category may be present in the size of 1 byte or any byte in the DILS information. Vendor Specific Category includes conditions of STAs that allow access defined separately for each STA manufacturer.
  • link setup information may exist in 1 byte in DILS information.
  • the link setting information of the ILSC type information corresponds to, for example, priority information of each user, hardware identifier information of a station, a combination state of access permission information of each manufacturer, or a priority of each information. Condition can be indicated.
  • the link configuration information is set to 0
  • only STAs that satisfy all of the user priority information, the station hardware identifier information, and the manufacturer access permission information may attempt to connect during the ILS Time. do.
  • the link setting information may represent the combined state of each condition in more detail.
  • the priority information for each user may be satisfied through each bit of the link configuration information of one octet, and may indicate an application of a combination that satisfies either the hardware identifier information of the station or the connection permission information for each manufacturer. .
  • the priority of the access allowance information for each manufacturer is set to the highest, the priority of the priority information for each user is set to the highest, and the priority of the hardware identifier information of the station is lowest. Can be set.
  • the priority is given to the specific station according to the request of the operator who installed the AP.
  • the importance is set to medium.
  • the MAC address distribution of each station is random in the case of the station's hardware identifier information, it is set to have the lowest importance as access control for the unspecified station.
  • the DILS information of the communication configuration message transmitted by the AP includes all of the manufacturer's access permission information, the user's priority information, and the station's hardware identifier information.
  • the station Upon receiving this, the station first attempts to access the AP without considering whether the other conditions are satisfied when the conditions of the manufacturer's access permission information are met.
  • connection is attempted when the conditions of the user priority information and the station hardware identifier information are satisfied.
  • the priority of each user is greater than or equal to a certain level, an access to the AP may be attempted regardless of the satisfaction of the condition of the hardware identifier information of the station.
  • the DILS information of the communication configuration message transmitted by the AP includes priority information for each user and hardware identifier information of the station.
  • the station Upon receiving this, the station first attempts to connect when both of the user priority information and the station hardware identifier information are satisfied. In exceptional cases, however, if the priority of each user is greater than or equal to a certain level, an access to the AP may be attempted regardless of the satisfaction of the condition of the hardware identifier information of the station.
  • the DILS information of the communication configuration message transmitted by the AP includes only the manufacturer's access permission information and the user's priority information, or includes only the manufacturer's access permission information and the station's hardware identifier information.
  • the station first attempts to access the AP without considering whether the other conditions are satisfied when the conditions of the manufacturer's access permission information are met.
  • an attempt is made when the condition of the user priority information or the station hardware identifier information is satisfied.
  • the DILS information of the communication configuration message transmitted by the AP includes only one of manufacturer's access permission information, user's priority information, and station's hardware identifier information. Upon receiving this, the station attempts to access the AP when the conditions of the information included in the DILS information are satisfied.
  • the combination state and priority of the conditions included in the DILS information may be variously set, and such information may be distinguished through link setting information.
  • FIG. 9 illustrates a structure of a beacon message that an AP periodically transmits to STAs according to an embodiment of the present invention.
  • access priority information is inserted into the data field of the beacon message.
  • STAs attempting to access the AP may attempt to access within the available time after receiving the beacon when they meet the corresponding conditions by analyzing the access priority conditions, particularly the initial access category information included in the DILS information. Otherwise, the connection can be attempted after the available time.
  • FIG. 10 illustrates a structure of a probe request message for STAs to request access of an AP to access an AP
  • FIG. 11 illustrates a probe response message transmitted by an AP that receives a probe request message according to an embodiment of the present invention. The structure is shown.
  • access priority information is inserted into the data field of the probe response message.
  • STAs attempting to access the AP may attempt to access within the available time after receiving the beacon when they meet the corresponding conditions by analyzing the access priority conditions, particularly the initial access category information included in the DILS information. Otherwise, the connection can be attempted after the available time.
  • the communication setup message such as a passive scanning beacon message or an active scanning probe response message, includes information on each station's connection priority condition, and each station performs connection establishment based on this. .
  • FIG. 12 is a flowchart illustrating an access procedure of an STA and an AP according to an embodiment of the present invention.
  • the AP transmits a communication configuration message to the STA (S1210).
  • the beacon message becomes the communication setting message
  • the probe response message becomes the communication setting message.
  • the communication configuration message includes DILS information, that is, information on the access priority condition of the STA.
  • the STA reads information on the access priority condition included in the communication configuration message (S1220).
  • the information on the access priority condition includes time information that a station corresponding to the access priority condition may attempt to access.
  • the information on the access priority condition may include information indicating the priority of each user, information indicating the hardware identifier of the station that is allowed to access, and information on the condition of the station allowed to access defined by the manufacturer.
  • the information may include a combination state of the pieces of information or information indicating a priority among the pieces of information.
  • the STA transmits an access request to the AP based on the read information (S1230). Since the STAs satisfying the access priority conditions included in the communication configuration message are different from each other, the STA transmits the access request at different times through this configuration.
  • the AP performs connection establishment with the STA that performed the access request (S1240).
  • FIG 13 illustrates an internal hierarchical structure of an STA according to an embodiment of the present invention.
  • the layers defined by the IEEE 802.11 standard are largely divided into a medium access control (MAC) layer and a physical (PHY) layer.
  • MAC medium access control
  • PHY physical
  • MLME Mac Layer Management Entity
  • PLME Physical Layer Management Entity
  • SME Station Management Entity
  • the STA searches for the AP as follows.
  • the SME sends an MLME scan request primitive (MLME-SCAN.request primitive) to the MLME.
  • This MLME scan request primitive contains conditions or information for channel search.
  • the MLME performs the passive scanning or the active scanning mentioned in FIGS. 6 and 7 according to the conditions specified in the primitive.
  • the processing information through the PHY layer, MAC layer to define the reporting option (Reporting Option) that is the time to report this information to the SME when BSS information is found can do.
  • the reporting option is classified into IMMEDIATE, channel-specific reporting (CHANNEL_SPECIFIC), and reporting at end (AT END).
  • the relevant information is sent to the SME through the MLME scan confirmation primitive (MLME-SCAN.confirm primitive) as soon as BSS information is found.
  • MLME scan confirmation primitive MLME-SCAN.confirm primitive
  • the MLME scan confirmation primitive (MLME-SCAN) at one time after the maximum channel time (MaxChannelTime) has elapsed from the time when scanning starts on one or more BSS information found in any channel. .confirm primitive) to send to the SME.
  • reporting option is reporting at the end
  • all the BSS information found in one or more channels is sent through the MLME-SCAN.confirm primitive at a time when scanning for all channels is finished. Send to SME.
  • any AP may operate on any channel. Since the STA does not know in which channel the APs exist, the STA performs a channel-by-channel scan sequentially or randomly. At this time, if the reporting option is immediate reporting, the discovered AP information is immediately reported inside the STA. If the reporting option is channel-specific reporting, all AP information found in one channel is reported at a time when the corresponding channel is terminated. In addition, when the reporting option is reporting at the end, information of all APs found in all channels is reported only once at the end time.
  • the LSB bit is set to 1 Delaying the delivery of the BSS information extracted from the beacon message or the probe response message including the DILS information to the SME.
  • the BSS information may be delivered to the SME after a delay until the scanning of the corresponding channel or the scanning of all the channels is terminated. This is because it is determined that the access request of the other STA to the AP that transmits the communication configuration message is relatively high, and delays the access request to the corresponding AP.
  • BSS information extracted from beacons or probe response messages that do not include DILS information or that includes DILS information with the LSB bit set to 0 is immediately transmitted to the SME accordingly if the reporting option is immediate reporting.
  • the SME can preferentially process information about an AP without DILS information.
  • the transmission is performed according to the initially set reporting option.
  • Scan Type PASSIVE
  • IMMEDIATE IMMEDIATE
  • the STA receives beacon messages from AP-1, AP-2, and AP-3, respectively.
  • the beacon message received from AP-1 and AP-3 has the LSB bit in the DILS information set to 0. It is assumed that the LSB bit of the beacon message received from AP-2 is set to 1. This indicates that AP-2 is currently receiving an access request (Authentication Request or Association Request) from many STAs.
  • the beacon message received from AP-1 and AP-3 by the STA is a beacon message received from AP-1 and AP-3 through the MLME scan acknowledgment primitive according to the immediate reporting option requested in the MLME scan request.
  • the BSS information received by the SME is immediately delivered to the SME.
  • FIG. 14 illustrates an example in which the BSS information included in the beacon message received from the AP-2 having the LSB bit set to 1 is delayed to the point at which scanning of the corresponding channel is delayed and then transmitted to the SME. This is because it is determined that the access request of the other STA to the AP that transmits the communication configuration message is relatively high, and delays the access request to the corresponding AP.
  • the beacon message in which the LSB bit is set to 1 may be delayed or transmitted to the SME by delaying other beacon messages in which the LSB bit is set to 0 or does not include DILS information. Include methods. This determination may be determined by a relative difference between the number of beacon messages where the actual LSB bit is set to 0 or does not include DILS information and the number of beacon messages where the LSB bit is set to 1.
  • 15 is a diagram illustrating an active scanning procedure according to an embodiment of the present invention.
  • Scan Type ACTIVE
  • Reporting Option IMMEDIATE
  • the STA receives probe response messages from AP-1 and AP-2, respectively.
  • the LSB bit in DILS information is set to 0 in the probe response message received from AP-1. It is assumed that the LSB bit of the probe response message received from the UE is set to one. This indicates that AP-2 is currently receiving an access request (Authentication Request or Association Request) from many STAs.
  • the STA responds to the BSS information received in the probe response message received from AP-1 through the MLME scan acknowledgment primitive according to the immediate reporting option, which is a reporting option requested at the time of the MLME scan request. Deliver immediately to SME.
  • FIG. 15 illustrates an example in which the BSS information included in the probe response message received from AP-2 having the LSB bit set to 1 is delayed to the time point at which scanning of a corresponding channel is delayed and then transmitted to the SME. This is because it is determined that the access request of the other STA to the AP that transmits the communication configuration message is relatively high, and delays the access request to the corresponding AP.
  • the probe response message in the case of a probe response message in which the LSB bit is set to 1, is delayed than other probe response messages in which the LSB bit is set to 0 or does not include DILS information. Includes methods that can be withheld. This determination may be determined by a relative difference between the number of probe response messages in which the actual LSB bit is set to 0 or does not include DILS information and the number of probe response messages in which the LSB bit is set to 1.
  • the scan type is set to active or passive in the MLME scan request primitive, and the reporting option is set to report by channel to convey an indication.
  • the LSB bit is delayed than other communication setting messages in which the LSB bit is set to 0 or does not include DILS information.
  • the related information is transmitted according to the reporting option at the end of delaying the reporting time point more than the reporting for each channel.
  • related information may be transmitted according to the reporting option for each channel.
  • FIG. 16 illustrates a scanning procedure between an AP and a STA including a plurality of network interface card modules according to an embodiment of the present invention
  • FIG. 17 illustrates an access procedure between an AP and a STA according to an embodiment of the present invention. It is a figure for demonstrating.
  • the illustrated embodiment is for the case where the AP includes a plurality of network interface card modules, and the STA performs access in consideration of connection priority conditions for each network interface card module.
  • Scan Type PASSIVE
  • Reporting Option IMMEDIATE
  • the STA receives beacon messages from AP-1 and AP-2, respectively. It is assumed that AP-1 and AP-2 have two network interface card modules, respectively.
  • the communication configuration message transmitted by AP-1 includes a first beacon message (Beacon # 1) including information on a BSS operated by the first network interface card module 220_1 of AP-1 and a second network of AP-1. It includes a first neighbor report (NR) # 1 including information on the BSS operated by the interface card module 220_2. That is, the first beacon message and the first neighbor report are combined and transmitted.
  • Beacon # 1 including information on a BSS operated by the first network interface card module 220_1 of AP-1
  • NR first neighbor report
  • the LSB bit in the DILS information of the first beacon message is set to 1 and the LSB bit in the DILS information of the first neighbor report message is set to 0.
  • This is a state where the first network interface card module 220_1 of AP-1 is receiving an access request (Authentication Request or Association Request) from many STAs, and the second network interface card module 220_2 of AP-1 is The connection is in good condition.
  • the communication setting message transmitted by AP-2 includes a second beacon message (Beacon # 2) including information on the BSS operated by the first network interface card module of AP-1 and the second network interface card module of AP-2. It includes a second neighbor report (NR) # 2 including information on the BSS operated by.
  • Beacon # 2 including information on the BSS operated by the first network interface card module of AP-1 and the second network interface card module of AP-2.
  • NR second neighbor report
  • the LSB bit in the DILS information of the second beacon message is set to 0 and the LSB bit in the DILS information of the second neighbor report message is set to 1. This indicates that the first network interface card module of AP-2 is smoothly connected and the second network interface card module of AP-2 is receiving an access request (Authentication Request or Association Request) from many STAs. .
  • the STA communicates with AP-1 through the MLME scan acknowledgment primitive according to the immediate reporting option, which is a reporting option requested in the MLME scan request for the first neighbor report message and the second beacon message received from AP-1 and AP-2.
  • the immediate reporting option is a reporting option requested in the MLME scan request for the first neighbor report message and the second beacon message received from AP-1 and AP-2.
  • the first beacon message and the second neighbor report do not follow the immediate reporting option, and are delayed until the end of scanning of the corresponding channel or the end of scanning of all channels, and then transmitted to the SME.
  • FIG. 16 illustrates an example in which BSS information included in a message in which an LSB bit is set to 1 is delayed to a time point at which scanning of a corresponding channel is terminated and then transmitted to the SME. This is because it is determined that the access request of the other STA to the AP that transmits the communication configuration message is relatively high, and delays the access request to the corresponding AP.
  • a beacon (or neighbor report) message in which the LSB bit is set to 1 may be delayed than another beacon (or neighbor report) message in which the LSB bit is set to 0 or does not include DILS information. It may include ways to deliver or withhold delivery to the SME. This determination may be determined by the relative difference between the number of beacon (or neighbor report) messages with the actual LSB bit set to 0 or without DILS information and the number of beacon (or neighbor report) messages with the LSB bit set to 1. Can be.
  • 17 is a diagram illustrating an access procedure between a STA and an AP according to an embodiment of the present invention.
  • the STA 100 has a plurality of network interface card modules 120_1 and 120_2 and the AP-1 200 has a plurality of network interface card modules 220_1 and 220_2.
  • the STA 100 accesses the multiple network interface card modules 220_1 and 220_2 of the AP-1200 using two modules simultaneously among the multiple network interface card modules 120_1 and 120_2 is shown. have.
  • the AP-1 200 periodically transmits a beacon message to the STAs present in the service areas of all the BSSs operated by the broadcast method in a broadcast manner ( S101).
  • the AP-1 200 transmits a beacon message through the first network interface card module 220_1 (S101).
  • the corresponding message may include a beacon message and a neighbor report message.
  • the beacon message includes information of the BSS operated by the AP-1 200 through the first network interface card module 220_1.
  • the neighbor report message includes information of the BSS of the second network interface card module 220_2 operated by the AP-1 200.
  • the STA 100 may delay reporting of the BSS information included in each message based on the value of the LSB bit of the DILS information included in the beacon message and the neighbor report. Since the beacon message transmitted by the first network interface card module 220_1 of the AP-1 200 has the LSB bit value set to 1, the beacon message is delayed to enter the access step (S109, S111).
  • the neighbor report transmitted by the second network interface card module 220_2 of the AP-1 200 is set to 0 in the LSB bit, the neighbor report immediately reports to the SME and then enters the access steps S209 and S211.
  • the AP may transmit information on the access priority condition for each of the plurality of network interface card modules, and the STA performs the access request for each network interface card module unit with reference to this.
  • Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media.
  • Computer readable media may include both computer storage media and communication media.
  • Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data.
  • Communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transmission mechanism, and includes any information delivery media.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne, selon un mode de réalisation, un procédé de configuration d'accès entre un point d'accès et une station, ledit procédé comprenant les étapes consistant à : transmettre un message de configuration de communication à une ou plusieurs stations par le point d'accès ; et effectuer une configuration d'accès par le point d'accès selon une demande d'accès de la station, le message de configuration de communication comportant des informations sur une condition d'accès prioritaire de chaque station.
PCT/KR2014/010736 2013-11-11 2014-11-10 Point d'accès, station et procédé de configuration d'accès entre un point d'accès et une station Ceased WO2015069074A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201480072907.7A CN105917704A (zh) 2013-11-11 2014-11-10 接入点、站点以及接入点和站点间的接入配置方法
US15/151,988 US20160255573A1 (en) 2013-11-11 2016-05-11 Access point, station, and access configuration method between access point and station

Applications Claiming Priority (4)

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KR10-2013-0136089 2013-11-11
KR20130136089 2013-11-11
KR10-2014-0038287 2014-03-31
KR1020140038287A KR20150054624A (ko) 2013-11-11 2014-03-31 액세스 포인트, 스테이션 및 액세스 포인트와 스테이션 간의 접속 설정 방법

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US15/151,988 Continuation US20160255573A1 (en) 2013-11-11 2016-05-11 Access point, station, and access configuration method between access point and station

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KR20130092082A (ko) * 2012-02-10 2013-08-20 황민규 무선랜 단말의 우선순위 자동접속 방법
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KR20120068275A (ko) * 2010-12-17 2012-06-27 삼성전자주식회사 휴대 단말기의 ＡＰ(Ａｃｃｅｓｓ Ｐｏｉｎｔ) 접속 제어 방법 및 장치
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KR101815802B1 (ko) * 2017-02-24 2018-01-05 세종대학교산학협력단 비콘을 이용하는 무선랜 서비스 방법 및 무선랜 접속 방법

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