WO2018055901A1 - アクセスポイント装置、ステーション装置、無線制御方法、通信制御方法およびプログラム - Google Patents
アクセスポイント装置、ステーション装置、無線制御方法、通信制御方法およびプログラム Download PDFInfo
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- WO2018055901A1 WO2018055901A1 PCT/JP2017/027072 JP2017027072W WO2018055901A1 WO 2018055901 A1 WO2018055901 A1 WO 2018055901A1 JP 2017027072 W JP2017027072 W JP 2017027072W WO 2018055901 A1 WO2018055901 A1 WO 2018055901A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/345—Interference values
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/20—Interfaces between hierarchically similar devices between access points
Definitions
- the present disclosure relates to an access point device, a station device, a wireless control method, a communication control method, and a program.
- Patent Document 1 discloses a method in which a database server collects interference information, and an access point apparatus acquires interference information from the database server and uses it for interference control.
- Patent Document 2 discloses a method in which a monitoring server collects interference information, a power control apparatus acquires interference information from the monitoring server, and is used for interference control.
- the access point device cannot grasp the interference information without using a management device such as a database server or a monitoring server.
- the present disclosure has been made in view of the above, and the present disclosure is a new and improved access point device that enables an access point device to grasp interference information without using a management device, A station apparatus, a wireless control method, a communication control method, and a program are provided.
- a reception unit that receives a signal transmitted from a network other than the BSS to which the device belongs, an acquisition unit that acquires parameter information regarding the signal, and the parameter information are included in the interference in the BSS.
- a station device including a report unit that reports to an access point device that performs control.
- a computer-implemented wireless control method includes reporting to an access point device that performs control.
- receiving a signal transmitted from a network other than the BSS to which the device belongs, obtaining parameter information regarding the signal, and receiving the parameter information as interference in the BSS A program for causing a computer to report to an access point device that performs control is provided.
- a receiving unit that receives parameter information about a signal transmitted from a network other than the BSS to which the own device belongs from a station device, and a control unit that performs interference control based on the parameter information, An access point device is provided.
- a communication control method executed by a computer is provided.
- the parameter information related to a signal transmitted from a network other than the BSS to which the own device belongs is received from the station device, and interference control is performed based on the parameter information.
- a program for realizing this is provided.
- the access point apparatus grasp the interference information without using the management apparatus.
- FIG. 1 is a diagram illustrating a configuration of a wireless LAN system according to an embodiment of the present disclosure.
- 1 is a diagram illustrating a configuration of a wireless LAN system according to Prior Literature 1.
- FIG. It is a sequence diagram which shows the operation
- AP which concerns on this embodiment exchanges aggregate parameter information.
- One embodiment of the present disclosure relates to a wireless LAN system. First, an overview of a wireless LAN system according to an embodiment of the present disclosure will be described with reference to FIGS.
- FIG. 1 is a diagram illustrating a configuration of a wireless LAN system according to an embodiment of the present disclosure.
- a wireless LAN system according to an embodiment of the present disclosure includes an access point device (hereinafter referred to as “AP (Access Point)” for convenience) 200 and a station device (hereinafter referred to as convenience). (Referred to as “STA (Station)”).
- AP Access Point
- STA Station
- a basic service set hereinafter referred to as “BSS (Basic Service Set)” for convenience
- BSS Basic Service Set
- the wireless LAN system according to an embodiment of the present disclosure can be installed in an arbitrary place.
- the wireless LAN system according to the present embodiment can be installed in an office building, a house, a commercial facility, a public facility, or the like.
- the area of the BSS 10 may overlap with the area of another BSS 10 (hereinafter referred to as “OBSS (Overlap Basic Service Set)” for convenience) in which the frequency channels used overlap.
- OBSS overlap Basic Service Set
- the signal transmitted from the STA 100 located in the overlapping area may interfere with the signal transmitted from the OBSS.
- the area of the BSS 10a overlaps with a part of the area of the BSS 10b that is the OBSS, and the STA 100b and the STA 100c are located in the overlapping area.
- a signal transmitted from the STA 100b belonging to the BSS 10a may interfere with a signal transmitted from the AP 200b or STA 100c belonging to the BSS 10b.
- a signal transmitted from the STA 100c belonging to the BSS 10b may interfere with a signal transmitted from the AP 200a or the STA 100b belonging to the BSS 10a.
- the AP 200 is connected to an external network and provides the STA 100 with communication with the external network.
- the AP 200 is connected to the Internet, and provides communication between the STA 100 and devices on the Internet or devices connected via the Internet.
- the STA 100 is a wireless device that communicates with the AP 200.
- the STA 100 may be any wireless device.
- the STA 100 may be a display having a display function, a memory having a storage function, a keyboard and a mouse having an input function, a speaker having a sound output function, and a smartphone having a function of executing advanced calculation processing.
- the AP acquires interference information such as parameter information of a signal transmitted from the OBSS, and based on the interference information, the BSS to which the own device belongs (hereinafter, “automatically”
- interference information such as parameter information of a signal transmitted from the OBSS
- the BSS to which the own device belongs hereinafter, “automatically”
- the AP prevents the occurrence of interference by changing the transmission power to a low value based on the interference information with the OBSS and reducing the radio wave reachable range.
- FIG. 2 is a diagram showing a configuration of the wireless LAN system according to the prior document 1.
- BSS1 is configured by AP1, STA1, and STA2
- BSS2 is configured by AP2, STA3, and STA4.
- the area of BSS1 overlaps with a part of area of BSS2 which is OBSS, and STA2 and STA3 are located in the overlapping area.
- the wireless LAN system includes a database connected to AP1 and AP2 via a network.
- the database acquires and manages interference information from each AP.
- each AP acquires interference information from the database, and prevents the occurrence of interference by changing each parameter in communication in its own BSS based on the interference information.
- a monitoring server connected to each AP via a network receives and manages interference information from the AP. Then, the power control apparatus connected to the monitoring server acquires interference information from the monitoring server, and determines the transmission power of each AP based on the interference information.
- the management device that collects and manages the interference information refers to the database in the prior document 1 and refers to the monitoring server in the prior document 2).
- the AP acquires interference information from the management apparatus.
- each AP cannot acquire interference information from the management device, and thus cannot perform interference control.
- the AP 200 can grasp interference information without using a management device.
- the AP 200 can exchange the interference information with another AP 200.
- the AP 200 can appropriately perform interference control based on the interference information.
- the functional outline, configuration, operation, modification example, and application example of the wireless LAN system according to an embodiment of the present disclosure will be described below.
- the STA 100 in the wireless LAN system When the STA 100 in the wireless LAN system according to the present embodiment receives its own BSS or OBSS signal, the STA 100 reports parameter information related to these signals to the AP 200 instead of the management apparatus as in the prior art. More specifically, when the STA 100 receives a signal of its own BSS or OBSS, the STA 100 provides parameter information related to the modulation method, transmission power, BSS identifier, RSSI (Received Signal Strength Indicator), transmission path usage time, etc. Alternatively, it is stored in a state where the OBSS is distinguished, and is reported to the AP 200.
- RSSI Receiveived Signal Strength Indicator
- FIG. 3 is a sequence diagram illustrating an operation in which the STA 100 according to the present embodiment acquires parameter information.
- step S1000 when the STA 100a transmits a signal to the AP 200a, it is assumed that not only the AP 200a but also the STA 100b receives the signal.
- the STA 100b stores the parameter information of the signal as the parameter information of the own BSS.
- the AP 200a that has received the signal also stores the parameter information of the signal as parameter information of the own BSS.
- step S1004 the STA 100b transmits a signal to the AP 200a. Assume that not only the AP 200a but also the STA 100c receives the signal. In this case, the STA 100c stores the parameter information of the signal as OBSS parameter information. In addition, AP200a which received the said signal memorize
- step S1008 the STA 100c transmits a signal to the AP 200b. Assume that not only the AP 200b but also the STA 100b receives the signal. In this case, the STA 100b stores the parameter information of the signal as OBSS parameter information. In addition, AP200b which received the said signal memorize
- step S1012 the STA 100d transmits a signal to the AP 200b. Assume that not only the AP 200b but also the STA 100c receives the signal. In this case, the STA 100c stores the parameter information of the signal as the parameter information of the own BSS. The AP 200b that has received the signal also stores the parameter information of the signal as the parameter information of the own BSS.
- FIG. 4 is a sequence diagram illustrating an operation in which the STA 100 according to the present embodiment transmits parameter information to the AP 200.
- step S1100 the STA 100b generates a frame including the parameter information of the own BSS or OBSS, and transmits the frame to the AP 200a.
- AP200a can grasp
- AP200a can perform interference control by changing parameters, such as transmission power, a modulation system, or a frequency band.
- step S1104 the STA 100c can recognize that the parameter information has been reported from the STA 100b to the AP 200a.
- the STA 100c may report the parameter information to the AP 200b triggered by the parameter information being reported from the STA 100b to the AP 200a.
- step S1108 the STA 100c generates a frame including the parameter information of the own BSS or OBSS, and transmits the frame to the AP 200b.
- AP200b can grasp
- the AP 200b can perform interference control by changing parameters such as transmission power, modulation scheme, or used frequency band, as described above.
- step S1112 the STA 100b can recognize that the parameter information has been reported from the STA 100c to the AP 200b in the same manner as described above.
- the AP 200 can acquire the parameter information of the own BSS or OBSS signal from each STA 100. Then, the AP 200 stores these parameter information in association with the identification information of the STA 100 that is the acquisition source.
- the parameter information that the AP 200 acquires and stores from each STA 100 is referred to as aggregate parameter information.
- the aggregate parameter information may be information obtained by editing the parameter information reported from each STA 100.
- the parameter information reported from each STA 100 is simply associated with the identification information of the STA 100 that is the acquisition source. It may be information.
- FIG. 5 is a sequence diagram showing an operation in which each AP 200 according to the present embodiment exchanges aggregate parameter information.
- step S1200 the AP 200a transmits the aggregate parameter information, and the AP 200b receives the aggregate parameter information.
- AP200b can grasp
- AP200b can perform interference control appropriately by changing parameter information.
- step S1204 the AP 200b transmits aggregate parameter information, and the AP 200a receives the aggregate parameter information.
- the AP 200a can ascertain the parameter information set in the BSS 10b and the influence of interference received by the BSS 10b device as described above, and appropriately perform interference control by changing the parameter information. be able to.
- the STA 100 reports the parameter information of the own BSS or OBSS to the AP 200, so that the AP 200 can grasp the interference information without using the management device.
- the AP 200 can grasp parameter information set in different BSSs and an interference state between the BSSs by aggregating the parameter information reported from the STA 100 and exchanging the aggregate parameter information between the APs 200. Then, the AP 200 can appropriately perform interference control by changing the parameter information of the own BSS based on the aggregate parameter information.
- FIG. 6 is a diagram illustrating a configuration of a frame transmitted and received in the wireless LAN system according to the present embodiment.
- the frame transmitted and received by the wireless LAN system according to the present embodiment is a PPDU having a preamble, a PLCP header, and an MPDU.
- the PLCP Header has L-SIG and HE-SIG.
- the MPDU has a MAC Header, Frame Body, and FCS (Frame Check Sequence).
- FIG. 7 is a diagram showing the configuration of the PLCP Header in FIG.
- the PLCP Header includes BSS Color, Tx Power, MCS Index, Uplink Indicator, and the like.
- BSS Color is information for identifying the BSS of a signal to be transmitted / received.
- BSS Color information corresponding to the BSS is stored in a BSS Color of a signal transmitted / received within a certain BSS
- wild card BSS Color information is stored in a BSS Color such as aggregate parameter information transmitted / received between different BSSs. Is stored.
- the STA 100 or AP 200 that has received the signal determines whether the signal is a signal of its own BSS or a signal communicated between the BSSs based on the BSS Color.
- Tx Power is transmission power information.
- the MCS index is a combination of a modulation scheme, a coding rate, and the like converted into an index.
- the Uplink Indicator is a signal transmission direction. For example, when the Uplink Indicator is 1, it indicates that the signal is an upstream signal, and when it is 0, the signal is a downstream signal. Indicates.
- FIG. 8 is a diagram showing the configuration of the MAC header in FIG.
- MAC Header includes Frame Control, Address 1 to Address 4, Sequence Control, QoS Control, HT Control, and the like.
- Information such as protocol version or frame type is stored in Frame Control, and information such as BSSID, source address or destination address is stored in Address1 to Address4.
- the Sequence Number is stored in the Sequence Control
- the QoS parameter is stored in the Qos Control
- the high-speed communication parameter is stored in the HT Control.
- FIG. 9 is a diagram illustrating the configuration of the STA 100 and the AP 200 according to the present embodiment.
- the STA 100 includes a wireless communication unit 110, a data processing unit 120, and a control unit 130.
- the radio communication unit 110 includes an antenna control unit 111, a reception processing unit 112, and a transmission processing unit 113, and functions as a reception unit and a reporting unit.
- the antenna control unit 111 controls transmission / reception of signals via at least one antenna. More specifically, the antenna control unit 111 provides a signal received via the antenna to the reception processing unit 112, and transmits a signal generated by the transmission processing unit 113 via the antenna.
- the reception processing unit 112 performs frame reception processing based on the signal provided from the antenna control unit 111. For example, the reception processing unit 112 outputs a baseband reception signal by performing analog processing and down conversion on the signal obtained from the antenna. The reception processing unit 112 calculates the correlation between the predetermined signal pattern and the reception signal while shifting the reception signal to be calculated on the time axis, and detects the preamble based on the appearance of the correlation peak. . Thereby, the reception processing unit 112 can detect the signal of the own BSS or the signal of the OBSS. Also, the reception processing unit 112 acquires a frame by performing demodulation and decoding on the baseband received signal, and provides the acquired frame to the reception frame analysis unit 121.
- the reception processing unit 112 provides the operation control unit 131 with information regarding the success or failure of the reception processing. For example, the reception processing unit 112 provides error occurrence information to the operation control unit 131 when reception processing such as demodulation fails. In addition, when the reception processing unit 112 receives a signal that cannot be detected by a correlation calculation with a predetermined signal pattern (that is, a signal that does not include a preamble of the wireless LAN standard), the reception processing unit 112 sends the information to the reception frame analysis unit 121. provide.
- the transmission processing unit 113 performs transmission processing of a frame provided from the transmission frame construction unit 126. More specifically, the transmission processing unit 113 generates a transmission signal based on a frame provided from the transmission frame construction unit 126 and a parameter set by an instruction from the signal control unit 132. For example, the transmission processing unit 113 encodes, interleaves, and modulates the baseband transmission signal by performing encoding, interleaving, and modulation on the frame provided from the transmission frame construction unit 126 according to the coding and modulation schemes indicated by the signal control unit 132. Generate. Further, the transmission processing unit 113 performs up-conversion on the baseband transmission signal obtained by the preceding process.
- the data processing unit 120 includes a reception frame analysis unit 121, a reception buffer 122, an interface unit 123, a transmission buffer 124, a parameter information storage unit 125, and a transmission frame construction unit 126. Prepare.
- the received frame analysis unit 121 functions as a determination unit and an acquisition unit, and performs analysis of received frames, acquisition of parameter information, and the like. More specifically, the received frame analysis unit 121 analyzes PLCP Header, MAC Header, and the like included in the frame received by the wireless communication unit 110. Then, the received frame analysis unit determines whether the received signal is a signal of the own BSS, based on the BSS Color or BSSID that is identification information.
- the received frame analysis unit 121 acquires each parameter and stores it in the parameter information storage unit 125 as parameter information of the own BSS (pointing to the second parameter information).
- the received frame analysis unit 121 acquires each parameter and stores it in the parameter information storage unit 125 as OBSS parameter information.
- the reception processing unit 112 provides information that a signal that does not include a wireless LAN standard preamble is received, the reception frame analysis unit 121 acquires each parameter and stores parameter information as energy detection parameter information. The data is stored in the unit 125.
- the reception frame analysis unit 121 acquires data or the like from the frame and stores the data in the reception buffer 122 when the own apparatus is included in the frame destination.
- the reception buffer 122 stores data included in the received frame.
- the interface unit 123 is an interface connected to other components provided in the STA 100. More specifically, the interface unit 123 receives data desired to be transmitted from another configuration such as an application or user interface, or provides received data to the application or user interface.
- the transmission buffer 124 stores transmission data provided from the interface unit 123.
- the parameter information storage unit 125 stores the own BSS parameter information, the OBSS parameter information, and the energy detection parameter information provided from the received frame analysis unit 121.
- FIG. 10 is a diagram illustrating an example of parameter information stored in the parameter information storage unit 125 according to the present embodiment.
- the parameter information storage unit 125 creates a record for each received signal and stores each parameter information. Then, the parameter information storage unit 125 also adds information on the transmission source network of the received signal. More specifically, the parameter information storage unit 125 stores the information of the own BSS or OBSS in the “BSS / OverLap BSS column” in the record, so that the received signal is the signal of the own BSS or the signal of the OBSS. (In the parameter information of the own BSS, “BSS” is described instead of “Own BSS”).
- the record 10, the record 11, and the record 13 in FIG. 10 are parameter information of the OBSS signal
- the record 12 is the parameter information of the own BSS signal.
- N / A when the received signal is a signal of a network other than a wireless LAN such as a cellular network, “N / A” or the like may be stored in the “BSS / OverLap BSS column”. Identification information may be stored. For example, wireless LAN version information, a frame type format, a subtype format, an aggregation format, and a type defined by EDCA, for example, as a QoS parameter may be stored.
- the transmission frame construction unit 126 generates a transmission frame. For example, the transmission frame construction unit 126 generates a parameter report frame based on the parameter information stored in the parameter information storage unit 125 and the control information set by the operation control unit 131. The transmission frame construction unit 126 generates a frame (packet) from the parameter information for transmission acquired from the parameter information storage unit 125, and a MAC header for media access control (MAC: Media Access Control) in the generated frame. Are added and error detection code is added. In addition, the transmission frame construction unit 126 may generate a transmission frame using transmission data stored in the transmission buffer 124.
- MAC Media Access Control
- FIG. 11 is a diagram showing an information element 20 used for transmission of parameter information of the own BSS.
- the information element 20 includes Element ID, Length, Report MAC Address, BSS STA Counts, parameter information for each received signal, and the like.
- Element ID is information on the type of information element
- Length is information on the length of information element 20
- Report MAC Address is information on the report destination address
- BSS STA Counts is the number of reported BSS signals.
- Information The parameter information for each BSS signal can include RSSI, MCS, Type, Duration, and the like, but can be changed as appropriate.
- Type is information indicating the type of data
- Type includes, for example, version information of a wireless LAN frame, information regarding whether or not the frame type is aggregated, or data.
- Information regarding Voice or Video may be included.
- Duration is information related to the transmission path usage time. FIG. 11 is merely an example, and the content of the information element 20 can be changed as appropriate.
- FIG. 12 is a diagram showing an information element 30 used for transmission of OBSS parameter information.
- the information element 30 includes Element ID, Length, Report MAC Address, OBSS Counts, parameter information for each received signal, and the like.
- OBSS Counts is information on the number of OBSS signals to be reported. The other information is the same as that of the information element 20 in FIG. FIG. 12 is merely an example, and the contents of the information element 30 can be changed as appropriate.
- FIG. 13 is a diagram showing an information element 40 used for transmission of energy detection parameter information.
- the information element 40 includes Element ID, Length, Report MAC Address, RSSI min level, Detect Counts, parameter information for each received signal, and the like.
- RSSI min level is the lowest RSSI information.
- Detect Counts is information on the number of signals to be reported.
- the parameter information for each signal can include RSSI max and Duration, but can be changed as appropriate.
- RSSI max is the highest RSSI information for each signal.
- FIG. 13 is merely an example, and the contents of the information element 40 can be changed as appropriate.
- Each information element shown in FIGS. 11 to 13 is stored in the Frame Body of FIG. 6 and transmitted. At this time, each information element may be stored alone in the Frame Body, or a plurality of information elements may be concatenated and stored in the Frame Body.
- control unit 130 includes an operation control unit 131 and a signal control unit 132.
- the operation control unit 131 controls processing related to transmission of parameter information. More specifically, the operation control unit 131 controls transmission processing of the parameter information of the own BSS, the parameter information of the OBSS, or the energy detection parameter information. For example, when the operation control unit 131 determines that an error having a predetermined frequency or more has occurred based on the error occurrence information provided from the reception processing unit 112, the operation control unit 131 controls each component to transmit each parameter information. To do. In addition, the operation control unit 131 controls each configuration so as to transmit each parameter information in the same manner when a predetermined time or more has elapsed from the previous transmission timing of the parameter information.
- the operation control unit 131 similarly controls each configuration to transmit each parameter information.
- the timing at which each parameter information is transmitted may be arbitrarily changed. With the above method, the operation control unit 131 can control each configuration so as to transmit each parameter information at an appropriate timing.
- the signal control unit 132 controls the operation of the wireless communication unit 110. More specifically, the signal control unit 132 controls transmission / reception processing of the wireless communication unit 110. For example, the signal control unit 132 causes the wireless communication unit 110 to set control information for transmission and reception based on an instruction from the operation control unit 131.
- the signal control unit 132 also controls idle channel detection processing such as CSMA / CA. For example, the signal control unit 132 determines signal transmission start or transmission standby based on the carrier sense result and the backoff time.
- the AP 200 can have the same configuration as the STA 100. Of course, the AP 200 may appropriately include a configuration that the STA 100 does not include.
- the wireless communication unit 210 includes an antenna control unit 211, a reception processing unit 212, and a transmission processing unit 213, and functions as a reception unit and a reporting unit. Since the function of each component is the same as that of the STA 100, description thereof is omitted.
- the data processing unit 220 includes a reception frame analysis unit 221, a reception buffer 222, an interface unit 223, a transmission buffer 224, a parameter information storage unit 225, and a transmission frame construction unit 226.
- a reception frame analysis unit 221 As shown in FIG. 9, the data processing unit 220 includes a reception frame analysis unit 221, a reception buffer 222, an interface unit 223, a transmission buffer 224, a parameter information storage unit 225, and a transmission frame construction unit 226.
- a reception frame analysis unit 221 As shown in FIG. 9, the data processing unit 220 includes a reception frame analysis unit 221, a reception buffer 222, an interface unit 223, a transmission buffer 224, a parameter information storage unit 225, and a transmission frame construction unit 226.
- the received frame analysis unit 221 functions as a generation unit, and performs processing related to analysis of received frames, parameter information, and aggregate parameter information. More specifically, when a frame including each parameter information is received from the STA 100, the received frame analysis unit 221 analyzes the frame and acquires parameter information. Then, the received frame analysis unit 221 generates aggregate parameter information based on the parameter information, and stores the aggregate parameter information in the parameter information storage unit 225. At this time, the received frame analysis unit 221 causes the parameter information storage unit 225 to store the aggregate parameter information in association with the identification information of the STA 100 that is the transmission source. Further, as described above, the received frame analysis unit 221 may generate aggregate parameter information by editing parameter information transmitted from the STA 100.
- the received frame analysis unit 221 When aggregate parameter information transmitted from another AP 200 is received, the received frame analysis unit 221 sends the aggregate parameter information to the parameter information storage unit 225 in a state in which the identification information of the AP 200 that is the transmission source is associated.
- the received frame analysis unit 221 may edit the aggregate parameter information transmitted from another AP 200 and store the edited aggregate parameter information in the parameter information storage unit 225.
- the parameter information storage unit 225 stores aggregate parameter information provided from the received frame analysis unit 221.
- the transmission frame construction unit 226 generates a transmission frame. For example, the transmission frame construction unit 226 generates a parameter information report request frame under the control of the operation control unit 231. Further, the transmission frame construction unit 226 generates a frame including the aggregate parameter information under the control of the operation control unit 231.
- control unit 230 includes an operation control unit 231 and a signal control unit 232.
- operation control unit 231 includes an operation control unit 231 and a signal control unit 232.
- signal control unit 232 includes an operation control unit 231 and a signal control unit 232.
- the operation control unit 231 controls processing related to parameter information, aggregate parameter information, and interference control.
- the operation control unit 231 controls processing related to a parameter information report request.
- the operation control unit 231 controls each component so as to generate and transmit a frame for a parameter information report request.
- the timing at which the parameter information report request is made is arbitrary.
- the operation control unit 231 may make a parameter information report request after a predetermined time has elapsed since the last time the parameter information report request was made. Further, the operation control unit 231 may make a parameter information report request when determining that the error occurrence frequency is equal to or higher than a predetermined threshold based on the error occurrence information provided from the reception processing unit 212.
- the operation control unit 231 controls processing for reporting the aggregate parameter information to other APs 200.
- the operation control unit 231 generates a frame including the aggregate parameter information stored in the parameter information storage unit 225 and controls each configuration so as to report the frame to other APs 200.
- the timing at which the aggregation parameter information is reported is arbitrary.
- the operation control unit 231 may report the aggregate parameter information after a predetermined time has elapsed since the previous report of the aggregate parameter information. Further, the operation control unit 231 may report aggregate parameter information when it is determined that the error occurrence frequency is equal to or higher than a predetermined threshold based on the error occurrence information provided from the reception processing unit 212.
- the operation control unit 231 performs processing related to interference control. More specifically, the operation control unit 231 performs interference control based on aggregate parameter information generated using parameter information from the STA 100 or aggregate parameter information received from another AP 200. For example, when the operation control unit 231 determines that the communication environment is inferior based on the aggregate parameter information, the operation control unit 231 changes the modulation method to a modulation method with low transmission efficiency (such as BPSK) that enables more reliable communication. Or change to a higher transmission power than allowed by the standard. Further, the operation control unit 231 may change the setting so as to use a frequency band different from the frequency band used in the OBSS.
- a modulation method with low transmission efficiency such as BPSK
- the operation control unit 231 may perform interference control based on information on the priority of data included in the aggregate parameter information. More specifically, when the operation control unit 231 confirms that high-priority data such as Voice is being communicated in the OBSS based on the type included in the aggregate parameter information, the OBSS Each parameter may be changed so that the above communication is preferentially performed. In addition, when the operation control unit 231 can confirm that high-priority data communication is not performed in the OBSS based on the type included in the aggregate parameter information, the operation control unit 231 performs communication of the own BSS preferentially. Each parameter may be changed as shown. Alternatively, in this case, the operation control unit 231 may make a new determination after changing each parameter of the OBSS without changing each parameter of the own BSS.
- FIGS. 14A and 14B are flowcharts showing an operation in which the STA 100 according to the present embodiment acquires parameter information.
- the operation described in FIG. 14A and FIG. 14B may be performed similarly to the STA 100.
- step S1300 the wireless communication unit 110 detects a signal having an RSSI greater than a predetermined threshold.
- the reception processing unit 112 detects the preamble of the wireless LAN by the correlation calculation between the predetermined signal pattern and the reception signal (step S1304 / Yes)
- the reception frame analysis unit 121 displays the PLCP Header information in step S1308. Extract.
- the received frame analysis unit 121 acquires a parameter (MCS index) related to MCS included in the PLCP header.
- step S1316 the received frame analysis unit 121 analyzes the header configuration or the version information included in the header.
- the signal header conforms to the corresponding standard of the device (standard including Tx Power, BSS Color, etc.) (step S1316 / Yes)
- step S1320 the received frame analysis unit 121 transmits from the PLCP header. Get the parameter (Tx Power) related to power.
- step S1324 the received frame analysis unit 121 acquires a parameter (BSS Color) related to the BSS Color from the PLCP Header.
- BSS Color parameter
- step S1328 if the received frame analysis unit 121 determines that the acquired BSS Color information is the BSS Color information of the own BSS (Yes in step S1328), the received frame analysis unit 121 displays the acquired parameter information. It is stored in the parameter information storage unit 125 as parameter information of the own BSS. In step S1328, when the received frame analysis unit 121 determines that the acquired BSS Color information is not the BSS Color information of the own BSS (No in step S1328), the received frame analysis unit 121 displays the acquired parameter information as OBSS. Parameter information is stored in the parameter information storage unit 125.
- step S1316 if the signal header does not conform to the corresponding standard of the device itself (step S1316 / No), in step S1332, the reception frame analysis unit 121 obtains MAC header address information (Address1 to Address4). To do.
- the received frame analysis unit 121 uses the acquired parameter information as the parameter information of the own BSS. It is stored in the parameter information storage unit 125.
- the received frame analysis unit 121 uses the acquired parameter information as the OBSS parameter information, The information is stored in the information storage unit 125.
- the reception processing unit 112 cannot detect the preamble of the wireless LAN (step S1304 / No)
- the reception frame analysis unit 121 uses the acquired parameter information as energy detection parameter information and sets the parameter The information is stored in the information storage unit 125.
- the reception frame analysis unit 121 acquires information related to RSSI from the reception processing unit 112, and stores the information in the parameter information storage unit 125.
- reception frame analysis section 121 acquires information on transmission path usage time from reception processing section 112 and stores the information in parameter information storage section 125.
- step S1360 If no FCS error has occurred in a series of frames (step S1360 / Yes), the process ends.
- step S1360 when an FCS error occurs in a series of frames (step S1360 / No), the reception processing unit 112 provides error occurrence information to the operation control unit 131, and the operation control unit 131 stores the information in a storage unit ( (Not shown), and the process ends.
- FIGS. 15A and 15B are flowcharts showing an operation in which the STA 100 according to the present embodiment reports parameter information to the AP 200.
- step S1400 the operation control unit 131 acquires error occurrence information from the reception processing unit 112. Then, in step S1404, if an error having a predetermined frequency or more has occurred (step S1404 / Yes), the parameter information reporting operation after step S1416 is performed. Further, even when an error with a predetermined frequency or more has not occurred in Step S1404 (Step S1404 / No), when a predetermined time or more has elapsed since the last time the parameter information was reported (Step S1404) (S1408 / Yes), processing for reporting parameter information is performed.
- step S1412 / Yes if the parameter information report request from the AP 200 is received (step S1412 / Yes), the parameters Processing to report information is performed. If the parameter information report request from the AP 200 has not been received in step S1412 (step S1412 / No), the process moves to step S1400. As described above, these parameter information reporting operation triggers may be changed as appropriate. Further, the process of step S1400 may be omitted.
- step S1420 the transmission frame construction unit 126 selects the unreported own BSS. Parameter information is acquired from the parameter information storage unit 125. In step S1424, the transmission frame construction unit 126 constructs its own BSS parameter report frame. If the parameter information storage unit 125 does not store parameter information of the unreported BSS in step S1416 (step S1416 / No), the process moves to step S1428.
- step S1428 If the parameter information storage unit 125 stores unreported OBSS parameter information in step S1428 (step S1428 / Yes), the transmission frame construction unit 126 performs unreported OBSS parameter information in step S1432. Is obtained from the parameter information storage unit 125. In step S1436, the transmission frame construction unit 126 constructs a BSS parameter report frame. If the parameter information storage unit 125 does not store unreported OBSS parameter information in step S1428 (step S1428 / No), the process moves to step S1440.
- step S1440 If parameter information storage unit 125 stores unreported energy detection parameter information in step S1440 (step S1440 / Yes), transmission frame construction unit 126 performs unreported energy detection parameter information in step S1444. Is obtained from the parameter information storage unit 125. In step S1448, the transmission frame construction unit 126 constructs an energy detection parameter report frame. In step S1440, if parameter information storage unit 125 does not store unreported energy detection parameter information (step S1440 / No), the process moves to step S1452.
- control section 130 transmits the generated parameter report frame at step S1456.
- the wireless communication unit 110 is controlled.
- control unit 130 records the transmission time of the parameter report frame, and the process ends. If the parameter information storage unit 125 does not store each parameter information that has not been reported in step S1452 (step S1452 / No), the process ends.
- FIG. 16 is a diagram illustrating a configuration of a wireless LAN system according to the first modification.
- 1st modification is a case where it is difficult for AP200 to communicate directly.
- the STA 100b belonging to the BSS 10a can communicate with the STA 100c belonging to the BSS 10b that is the OBSS, but the AP 200a cannot communicate with the AP 200b.
- the AP 200 exchanges aggregate parameter information with other APs 200 via the STA 100.
- the STA 100 in the first modification controls processing related to the transfer of aggregate parameter information. More specifically, when the received frame analysis unit 121 of the STA 100 analyzes the received frame and determines that the aggregate parameter information from the AP 200 has been received, the received frame analysis unit 121 provides the information to the operation control unit 131. Thereafter, the operation control unit 131 controls each configuration so as to transfer a frame including the aggregate parameter information.
- FIG. 17 is a sequence diagram showing an operation of each AP 200 exchanging aggregate parameter information in the first modification.
- the AP 200a transmits aggregate parameter information, and the STA 100b receives the aggregate parameter information.
- the STA 100b transfers the aggregate parameter information, and the STA 100c receives the aggregate parameter information.
- the STA 100c transfers the aggregate parameter information, and the AP 200b receives the aggregate parameter information.
- step S1512 the AP 200b transmits aggregate parameter information, and the STA 100c receives the aggregate parameter information.
- step S1516 the STA 100c transfers the aggregate parameter information, and the STA 100b receives the aggregate parameter information.
- step S1520 the STA 100b transfers the aggregate parameter information, and the AP 200a receives the aggregate parameter information.
- the AP 200 can exchange the aggregate parameter information with a different AP 200 via the STA 100. For example, even in a situation where communication between different APs 200 cannot always be performed normally, such as when the location of the AP 200 can be changed, the AP 200 can exchange aggregate parameter information with a different AP 200.
- FIG. 18 is a diagram illustrating a configuration of a wireless LAN system according to the second modification.
- the second modification is a case where a controller and a plurality of APs 200 are connected via a wired network.
- the APs 200a and 200b and the controller are connected by a wired network.
- the AP 200a, the AP 200b, and the controller may be connected by an Ethernet cable.
- the AP 200 transmits aggregate parameter information to the controller via the wired network, and exchanges aggregate parameter information with other APs 200.
- the interference control using the interference information may be performed by the controller or may be performed by each AP 200 as appropriate.
- the present disclosure can be applied to wireless LAN systems having various network configurations.
- the STA 100 is a smartphone, a tablet PC (Personal Computer), a notebook PC, a mobile terminal such as a portable game terminal or a digital camera, a fixed terminal such as a television receiver, a printer, a digital scanner, or a network storage, or a car navigation device. It may be realized as an in-vehicle terminal.
- the STA 100 is realized as a terminal (also referred to as a MTC (Machine Type Communication) terminal) that performs M2M (Machine To Machine) communication such as a smart meter, a vending machine, a remote monitoring device, or a POS (Point Of Sale) terminal. May be.
- the STA 100 may be a wireless communication module (for example, an integrated circuit module configured by one die) mounted on these terminals.
- the AP 200 may be realized as a wireless LAN access point (also referred to as a wireless base station) having a router function or not having a router function.
- the AP 200 may be realized as a mobile wireless LAN router.
- the AP 200 may be a wireless communication module (for example, an integrated circuit module configured by one die) mounted on these devices.
- FIG. 19 is a block diagram illustrating an example of a schematic configuration of a smartphone 900 to which the technology according to the present disclosure can be applied.
- the smartphone 900 includes a processor 901, a memory 902, a storage 903, an external connection interface 904, a camera 906, a sensor 907, a microphone 908, an input device 909, a display device 910, a speaker 911, a wireless communication interface 913, an antenna switch 914, an antenna 915, A bus 917, a battery 918, and an auxiliary controller 919 are provided.
- the processor 901 may be, for example, a CPU (Central Processing Unit) or a SoC (System on Chip), and controls the functions of the application layer and other layers of the smartphone 900.
- the memory 902 includes a RAM (Random Access Memory) and a ROM (Read Only Memory), and stores programs and data executed by the processor 901.
- the storage 903 can include a storage medium such as a semiconductor memory or a hard disk.
- the external connection interface 904 is an interface for connecting an external device such as a memory card or a USB (Universal Serial Bus) device to the smartphone 900.
- the camera 906 includes, for example, an imaging element such as a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS), and generates a captured image.
- the sensor 907 may include a sensor group such as a positioning sensor, a gyro sensor, a geomagnetic sensor, and an acceleration sensor.
- the microphone 908 converts sound input to the smartphone 900 into an audio signal.
- the input device 909 includes, for example, a touch sensor that detects a touch on the screen of the display device 910, a keypad, a keyboard, a button, or a switch, and receives an operation or information input from a user.
- the display device 910 has a screen such as a liquid crystal display (LCD) or an organic light emitting diode (OLED) display, and displays an output image of the smartphone 900.
- the speaker 911 converts an audio signal output from the smartphone 900 into audio.
- the wireless communication interface 913 supports one or more wireless LAN standards such as IEEE802.11a, 11b, 11g, 11n, 11ac, and 11ad, and performs wireless communication.
- the wireless communication interface 913 can communicate with other devices via a wireless LAN access point in the infrastructure mode.
- the wireless communication interface 913 can directly communicate with other devices in an ad hoc mode or a direct communication mode such as Wi-Fi Direct (registered trademark).
- Wi-Fi Direct unlike the ad hoc mode, one of two terminals operates as an access point, but communication is performed directly between the terminals.
- the wireless communication interface 913 can typically include a baseband processor, an RF (Radio Frequency) circuit, a power amplifier, and the like.
- the wireless communication interface 913 may be a one-chip module in which a memory that stores a communication control program, a processor that executes the program, and related circuits are integrated.
- the wireless communication interface 913 may support other types of wireless communication methods such as a short-range wireless communication method, a proximity wireless communication method, or a cellular communication method in addition to the wireless LAN method.
- the antenna switch 914 switches the connection destination of the antenna 915 among a plurality of circuits (for example, circuits for different wireless communication schemes) included in the wireless communication interface 913.
- the antenna 915 includes a single antenna element or a plurality of antenna elements (for example, a plurality of antenna elements constituting a MIMO antenna), and is used for transmission and reception of radio signals by the radio communication interface 913.
- the smartphone 900 is not limited to the example in FIG. 19, and may include a plurality of antennas (for example, an antenna for a wireless LAN and an antenna for a proximity wireless communication method). In that case, the antenna switch 914 may be omitted from the configuration of the smartphone 900.
- the bus 917 connects the processor 901, memory 902, storage 903, external connection interface 904, camera 906, sensor 907, microphone 908, input device 909, display device 910, speaker 911, wireless communication interface 913, and auxiliary controller 919 to each other.
- the battery 918 supplies power to each block of the smartphone 900 shown in FIG. 19 through a power supply line partially shown by a broken line in the drawing.
- the auxiliary controller 919 operates the minimum necessary functions of the smartphone 900 in the sleep mode.
- the wireless communication unit 110, the data processing unit 120, and the control unit 130 described with reference to FIG. 9 may be implemented in the wireless communication interface 913.
- at least a part of these functions may be implemented in the processor 901 or the auxiliary controller 919.
- the smartphone 900 may operate as a wireless access point (software AP) when the processor 901 executes the access point function at the application level. Further, the wireless communication interface 913 may have a wireless access point function.
- FIG. 20 is a block diagram illustrating an example of a schematic configuration of a car navigation device 920 to which the technology according to the present disclosure can be applied.
- the car navigation device 920 includes a processor 921, a memory 922, a GPS module 924, a sensor 925, a data interface 926, a content player 927, a storage medium interface 928, an input device 929, a display device 930, a speaker 931, a wireless communication interface 933, and an antenna switch. 934, an antenna 935, and a battery 938.
- the processor 921 may be a CPU or SoC, for example, and controls the navigation function and other functions of the car navigation device 920.
- the memory 922 includes RAM and ROM, and stores programs and data executed by the processor 921.
- the GPS module 924 measures the position (for example, latitude, longitude, and altitude) of the car navigation device 920 using GPS signals received from GPS satellites.
- the sensor 925 may include a sensor group such as a gyro sensor, a geomagnetic sensor, and an atmospheric pressure sensor.
- the data interface 926 is connected to the in-vehicle network 941 through a terminal (not shown), for example, and acquires data generated on the vehicle side such as vehicle speed data.
- the content player 927 reproduces content stored in a storage medium (for example, CD or DVD) inserted into the storage medium interface 928.
- the input device 929 includes, for example, a touch sensor, a button, or a switch that detects a touch on the screen of the display device 930, and receives an operation or information input from the user.
- the display device 930 has a screen such as an LCD or an OLED display, and displays a navigation function or an image of content to be reproduced.
- the speaker 931 outputs the navigation function or the audio of the content to be played back.
- the wireless communication interface 933 supports one or more wireless LAN standards such as IEEE802.11a, 11b, 11g, 11n, 11ac, and 11ad, and executes wireless communication.
- the wireless communication interface 933 can communicate with other devices via a wireless LAN access point in the infrastructure mode.
- the wireless communication interface 933 can directly communicate with other devices in an ad hoc mode or a direct communication mode such as Wi-Fi Direct.
- the wireless communication interface 933 may typically include a baseband processor, an RF circuit, a power amplifier, and the like.
- the wireless communication interface 933 may be a one-chip module in which a memory that stores a communication control program, a processor that executes the program, and related circuits are integrated.
- the wireless communication interface 933 may support other types of wireless communication systems such as a short-range wireless communication system, a proximity wireless communication system, or a cellular communication system.
- the antenna switch 934 switches the connection destination of the antenna 935 among a plurality of circuits included in the wireless communication interface 933.
- the antenna 935 includes a single antenna element or a plurality of antenna elements, and is used for transmission and reception of a radio signal by the radio communication interface 933.
- the car navigation device 920 is not limited to the example of FIG. 20, and may include a plurality of antennas. In that case, the antenna switch 934 may be omitted from the configuration of the car navigation device 920.
- the battery 938 supplies power to each block of the car navigation device 920 shown in FIG. 20 through a power supply line partially shown by a broken line in the drawing. Further, the battery 938 stores electric power supplied from the vehicle side.
- the wireless communication unit 110, the data processing unit 120, and the control unit 130 described with reference to FIG. 9 may be implemented in the wireless communication interface 933. Further, at least a part of these functions may be implemented in the processor 921.
- the wireless communication interface 933 may operate as the above-described AP 200 and provide a wireless connection to a terminal of a user who gets on the vehicle.
- the technology according to the present disclosure may be realized as an in-vehicle system (or vehicle) 940 including one or more blocks of the car navigation device 920 described above, an in-vehicle network 941, and a vehicle side module 942.
- vehicle-side module 942 generates vehicle-side data such as vehicle speed, engine speed, or failure information, and outputs the generated data to the in-vehicle network 941.
- FIG. 21 is a block diagram illustrating an example of a schematic configuration of a wireless access point 950 to which the technology according to the present disclosure can be applied.
- the wireless access point 950 includes a controller 951, a memory 952, an input device 954, a display device 955, a network interface 957, a wireless communication interface 963, an antenna switch 964, and an antenna 965.
- the controller 951 may be a CPU or a DSP (Digital Signal Processor), for example, and various functions (for example, access restriction, routing, encryption, firewall) of the IP (Internet Protocol) layer and higher layers of the wireless access point 950 And log management).
- the memory 952 includes a RAM and a ROM, and stores programs executed by the controller 951 and various control data (for example, a terminal list, a routing table, an encryption key, security settings, and a log).
- the input device 954 includes, for example, a button or a switch and receives an operation from the user.
- the display device 955 includes an LED lamp and the like, and displays the operation status of the wireless access point 950.
- the network interface 957 is a wired communication interface for connecting the wireless access point 950 to the wired communication network 958.
- the network interface 957 may have a plurality of connection terminals.
- the wired communication network 958 may be a LAN such as Ethernet (registered trademark), or may be a WAN (Wide Area Network).
- the wireless communication interface 963 supports one or more of wireless LAN standards such as IEEE802.11a, 11b, 11g, 11n, 11ac, and 11ad, and provides a wireless connection as an access point to nearby terminals.
- the wireless communication interface 963 may typically include a baseband processor, an RF circuit, a power amplifier, and the like.
- the wireless communication interface 963 may be a one-chip module in which a memory that stores a communication control program, a processor that executes the program, and related circuits are integrated.
- the antenna switch 964 switches the connection destination of the antenna 965 among a plurality of circuits included in the wireless communication interface 963.
- the antenna 965 includes a single antenna element or a plurality of antenna elements, and is used for transmission and reception of a radio signal by the radio communication interface 963.
- the wireless communication unit 210, the data processing unit 220, and the control unit 230 described with reference to FIG. 9 may be implemented in the wireless communication interface 963. In addition, at least a part of these functions may be implemented in the controller 951.
- the STA 100 collects BSS or OBSS parameter information, but the collection process may not always be performed. For example, the STA 100 may not collect parameter information when the error occurrence frequency in the transmission / reception process is equal to or less than a predetermined threshold, but may collect parameter information when the error occurrence frequency is greater than the predetermined threshold. As a result, the STA 100 can reduce the amount of power consumed by trying to collect parameter information even when no interference occurs.
- the STA 100 does not collect parameter information when the own device is not connected to a power source and is operated by a mobile battery, and collects parameter information when the own device is connected to a power source. Good. Accordingly, the STA 100 can prevent the mobile battery from being exhausted by collecting the parameter information.
- the STA 100 when the STA 100 is moving, the interference status with the OBSS changes frequently, so there is a possibility that appropriate parameter information may not be acquired. Therefore, if the STA 100 determines that the device is carried by the user using a GPS (Global Positioning System) sensor or the like, the STA 100 does not collect parameter information and determines that the device is not moving. In this case, parameter information may be collected. Thereby, the STA 100 can collect appropriate parameter information, and can reduce the amount of power consumed by acquiring inappropriate parameter information.
- GPS Global Positioning System
- the AP 200 can grasp interference information without using a management device.
- the AP 200 can exchange the interference information with another AP 200.
- the AP 200 can appropriately perform interference control based on the interference information.
- each step in the operation of the STA 100 according to the present embodiment does not necessarily have to be processed in time series in the order described as a flowchart.
- the steps described in FIG. 3 to FIG. 5, FIG. 14A to FIG. 15B, and FIG. 18 may be processed in an order different from the order described in the figures, or may be processed in parallel.
- steps S1000 to S1012 shown in FIG. 3 may be processed in different orders or in parallel.
- a part of the configuration of the STA 100 can be provided outside the STA 100 as appropriate.
- a part of the configuration of the AP 200 can be provided outside the AP 200 as appropriate.
- control unit 130 may implement part of the functions of the wireless communication unit 110 or the data processing unit 120.
- control unit 230 may embody part of the functions of the wireless communication unit 210 or the data processing unit 220.
- the other network is an OBSS that overlaps the BSS.
- the parameter information includes modulation scheme information, transmission power information, BSS identification information, RSSI information, version information, type information, or transmission path usage time information.
- the other network is a cellular network.
- the parameter information includes RSSI information and transmission path usage time information.
- the station apparatus as described in said (4).
- the acquisition unit acquires second parameter information related to a signal transmitted from the BSS,
- the reporting unit reports the second parameter information to the access point device;
- the station device according to any one of (1) to (5).
- the receiving unit receives aggregate parameter information generated by the access point device by aggregating the parameter information or the second parameter information;
- the reporting unit reports the aggregate parameter information to an access point apparatus that belongs to a BSS other than the BSS and performs interference control.
- the station apparatus as described in said (6).
- a determination unit that determines whether the signal is a signal transmitted from the BSS based on BSS identification information included in the parameter information;
- the reporting unit reports the parameter information to the access point device as interference information based on the determination.
- the station device according to any one of (1) to (3).
- the acquisition unit acquires the parameter information when the station device is connected to a power source or when the station device is not moving.
- the station device according to any one of (1) to (8).
- a wireless control method executed by a computer.
- the parameter information includes modulation scheme information, transmission power information, BSS identification information, RSSI information, version information, type information, or transmission path usage time information.
- the other network is a cellular network.
- the parameter information includes RSSI information and transmission path usage time information.
- the receiving unit receives second parameter information related to a signal transmitted from the BSS from the station device, The control unit performs interference control based on the parameter information and the second parameter information.
- a generating unit that generates aggregate parameter information in which the parameter information or the second parameter information is aggregated; A reporting unit for reporting the aggregate parameter information to an access point apparatus belonging to a BSS other than the BSS and performing interference control;
- BSS 10
- BSS 20
- Information element used for transmission of BSS parameter information 30
- Information element used for transmission of OBSS parameter information 40
- Information element used for transmission of energy detection parameter information 100
- STA 110 wireless communication unit 120 data processing unit 130 control unit 200
- AP 210
- wireless communication unit 220 data processing unit 230 control unit
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Abstract
Description
1.無線LANシステムの概要
2.装置の構成
3.装置の動作
4.変形例
5.応用例
6.補足事項
7.むすび
本開示の一実施形態は、無線LANシステムに関する。まず、図1~図8を参照し、本開示の一実施形態に係る無線LANシステムの概要について説明する。
図1は、本開示の一実施形態に係る無線LANシステムの構成を示す図である。図1に示すように、本開示の一実施形態に係る無線LANシステムは、アクセスポイント装置(以降、便宜的に「AP(Access Point)」と呼称する)200と、ステーション装置(以降、便宜的に「STA(Station)」と呼称する)100と、を備える。そして、1台のAP200と、1台以上のSTA100と、によって基本サービスセット(以降、便宜的に「BSS(Basic Service Set)」と呼称する)10が構成される。
次いで、本開示の背景について説明する。無線LANシステムが広く普及するまでは、APは、使用する周波数帯域が他のBSSと重複しないように周波数チャネルを設定し各BSSを運用することで、各BSSから送信された信号同士が干渉する可能性は低かった。しかし、近年、無線LANシステムの普及に伴い、隣接する複数のBSSにおいて使用される周波数帯域が重複するケースが増加しているため、各BSSから送信された信号同士が干渉する可能性が高くなっている。
上記では、本開示の背景について説明した。続いて、本開示の一実施形態に係る無線LANシステムの機能概要について説明する。
上記では、本開示の一実施形態に係る無線LANシステムの機能概要について説明した。続いて、図6~図8を参照して、本実施形態に係る無線LANシステムによって送受信されるフレームの構成について説明する。
上記では、本開示の一実施形態に係る無線LANシステムの機能概要について説明した。続いて、図9を参照して、本実施形態に係るSTA100およびAP200の構成について説明する。図9は、本実施形態に係るSTA100およびAP200の構成を示す図である。
まず、STA100の構成について説明する。STA100は、図9に示すように、無線通信部110と、データ処理部120と、制御部130と、を備える。
無線通信部110は、図9に示すように、アンテナ制御部111と、受信処理部112と、送信処理部113と、を備え、受信部および報告部として機能する。
データ処理部120は、図9に示すように、受信フレーム解析部121と、受信バッファ122と、インタフェース部123と、送信バッファ124と、パラメータ情報記憶部125と、送信フレーム構築部126と、を備える。
制御部130は、図9に示すように、動作制御部131と、信号制御部132と、を備える。
AP200は、STA100と同様の構成を備え得る。もちろん、AP200は、STA100が備えていない構成を適宜備えてもよい。
無線通信部210は、図9に示すように、アンテナ制御部211と、受信処理部212と、送信処理部213と、を備え、受信部および報告部として機能する。各構成の機能はSTA100の構成と同様であるため、説明を省略する。
データ処理部220は、図9に示すように、受信フレーム解析部221と、受信バッファ222と、インタフェース部223と、送信バッファ224と、パラメータ情報記憶部225と、送信フレーム構築部226と、を備える。以下では、各構成の機能において、STA100の構成と同様の機能については説明を省略する。
制御部230は、図9に示すように、動作制御部231と、信号制御部232と、を備える。以下では、各構成の機能において、STA100の構成と同様の機能については説明を省略する。
上記では、本実施形態に係るSTA100およびAP200の構成について説明した。続いて、図14Aおよび図14Bを参照して、パラメータ情報の取得動作について説明する。図14Aおよび図14Bは、本実施形態に係るSTA100がパラメータ情報を取得する動作を示すフローチャートである。ここで、AP200がパラメータ情報を取得する場合も、STA100と同様に、図14Aおよび図14Bに記載の動作を行ってもよい。
上記では、パラメータ情報の報告動作について説明した。続いて、図16~図18を参照して、本開示の変形例について説明する。
まず、図16および図17を参照して、本開示の第1の変形例について説明する。図16は、第1の変形例に係る無線LANシステムの構成を示す図である。
続いて、図18を参照して、本開示の第2の変形例について説明する。図18は、第2の変形例に係る無線LANシステムの構成を示す図である。
本開示に係る技術は、様々な製品へ応用可能である。例えば、STA100は、スマートフォン、タブレットPC(Personal Computer)、ノートPC、携帯型ゲーム端末若しくはデジタルカメラなどのモバイル端末、テレビジョン受像機、プリンタ、デジタルスキャナ若しくはネットワークストレージなどの固定端末、又はカーナビゲーション装置などの車載端末として実現されてもよい。また、STA100は、スマートメータ、自動販売機、遠隔監視装置又はPOS(Point Of Sale)端末などの、M2M(Machine To Machine)通信を行う端末(MTC(Machine Type Communication)端末ともいう)として実現されてもよい。さらに、STA100は、これら端末に搭載される無線通信モジュール(例えば、1つのダイで構成される集積回路モジュール)であってもよい。
図19は、本開示に係る技術が適用され得るスマートフォン900の概略的な構成の一例を示すブロック図である。スマートフォン900は、プロセッサ901、メモリ902、ストレージ903、外部接続インタフェース904、カメラ906、センサ907、マイクロフォン908、入力デバイス909、表示デバイス910、スピーカ911、無線通信インタフェース913、アンテナスイッチ914、アンテナ915、バス917、バッテリー918及び補助コントローラ919を備える。
図20は、本開示に係る技術が適用され得るカーナビゲーション装置920の概略的な構成の一例を示すブロック図である。カーナビゲーション装置920は、プロセッサ921、メモリ922、GPSモジュール924、センサ925、データインタフェース926、コンテンツプレーヤ927、記憶媒体インタフェース928、入力デバイス929、表示デバイス930、スピーカ931、無線通信インタフェース933、アンテナスイッチ934、アンテナ935及びバッテリー938を備える。
図21は、本開示に係る技術が適用され得る無線アクセスポイント950の概略的な構成の一例を示すブロック図である。無線アクセスポイント950は、コントローラ951、メモリ952、入力デバイス954、表示デバイス955、ネットワークインタフェース957、無線通信インタフェース963、アンテナスイッチ964及びアンテナ965を備える。
無線通信インタフェース963は、IEEE802.11a、11b、11g、11n、11ac及び11adなどの無線LAN標準のうちの1つ以上をサポートし、近傍の端末へアクセスポイントとして無線接続を提供する。無線通信インタフェース963は、典型的には、ベースバンドプロセッサ、RF回路及びパワーアンプなどを含み得る。無線通信インタフェース963は、通信制御プログラムを記憶するメモリ、当該プログラムを実行するプロセッサ及び関連する回路を集積したワンチップのモジュールであってもよい。アンテナスイッチ964は、無線通信インタフェース963に含まれる複数の回路の間でアンテナ965の接続先を切り替える。アンテナ965は、単一の又は複数のアンテナ素子を有し、無線通信インタフェース963による無線信号の送信及び受信のために使用される。
上記では、本開示の応用例について説明した。続いて、STA100によるパラメータ情報の収集処理の補足事項について説明する。
以上説明したように、本開示の一実施形態に係るAP200は、管理装置を用いることなく干渉情報を把握することができる。そして、AP200は、他のAP200と当該干渉情報を交換することができる。さらに、AP200は、当該干渉情報に基づいて適切に干渉制御を行うことができる。
(1)
自装置が属するBSS以外の他ネットワークから送信された信号を受信する受信部と、
前記信号に関するパラメータ情報を取得する取得部と、
前記パラメータ情報を、前記BSS内の、干渉制御を行うアクセスポイント装置へ報告する報告部と、を備える、
ステーション装置。
(2)
前記他ネットワークは、前記BSSにオーバーラップするOBSSである、
前記(1)に記載のステーション装置。
(3)
前記パラメータ情報は、変調方式情報、送信電力情報、BSS識別情報、RSSI情報、バージョン情報、タイプ情報または伝送路利用時間情報を含む、
前記(2)に記載のステーション装置。
(4)
前記他ネットワークは、セルラーネットワークである、
前記(1)に記載のステーション装置。
(5)
前記パラメータ情報は、RSSI情報、伝送路利用時間情報を含む、
前記(4)に記載のステーション装置。
(6)
前記受信部は、前記BSSから送信された信号を受信した場合、
前記取得部は、前記BSSから送信された信号に関する第2のパラメータ情報を取得し、
前記報告部は、前記第2のパラメータ情報を前記アクセスポイント装置へ報告する、
前記(1)から(5)のいずれか1項に記載のステーション装置。
(7)
前記受信部は、前記アクセスポイント装置が前記パラメータ情報または前記第2のパラメータ情報を集約して生成した集約パラメータ情報を受信し、
前記報告部は、前記集約パラメータ情報を、前記BSS以外の他BSSに所属し干渉制御を行うアクセスポイント装置へ報告する、
前記(6)に記載のステーション装置。
(8)
前記パラメータ情報に含まれるBSS識別情報に基づいて、前記信号が前記BSSから送信された信号であるか否かの判定を行う判定部をさらに備え、
前記報告部は、前記判定に基づいて前記パラメータ情報を干渉情報として前記アクセスポイント装置へ報告する、
前記(1)から(3)のいずれか1項に記載のステーション装置。
(9)
前記取得部は、前記ステーション装置が電源に接続されている場合、または、前記ステーション装置が移動していない場合に前記パラメータ情報を取得する、
前記(1)から(8)のいずれか1項に記載のステーション装置。
(10)
自装置が属するBSS以外の他ネットワークから送信された信号を受信することと、
前記信号に関するパラメータ情報を取得することと、
前記パラメータ情報を、前記BSS内の、干渉制御を行うアクセスポイント装置へ報告することと、を有する、
コンピュータにより実行される無線制御方法。
(11)
自装置が属するBSS以外の他ネットワークから送信された信号を受信することと、
前記信号に関するパラメータ情報を取得することと、
前記パラメータ情報を、前記BSS内の、干渉制御を行うアクセスポイント装置へ報告することと、
をコンピュータに実現させるためのプログラム。
(12)
自装置が属するBSS以外の他ネットワークから送信された信号に関するパラメータ情報をステーション装置から受信する受信部と、
前記パラメータ情報に基づいて干渉制御を行う制御部と、を備える、
アクセスポイント装置。
(13)
前記他ネットワークは、前記BSSにオーバーラップするOBSSである、
前記(12)に記載のアクセスポイント装置。
(14)
前記パラメータ情報は、変調方式情報、送信電力情報、BSS識別情報、RSSI情報、バージョン情報、タイプ情報または伝送路利用時間情報を含む、
前記(13)に記載のアクセスポイント装置。
(15)
前記他ネットワークは、セルラーネットワークである、
前記(12)に記載のアクセスポイント装置。
(16)
前記パラメータ情報は、RSSI情報、伝送路利用時間情報を含む、
前記(15)に記載のアクセスポイント装置。
(17)
前記受信部は、前記BSSから送信された信号に関する第2のパラメータ情報を前記ステーション装置から受信し、
前記制御部は、前記パラメータ情報および前記第2のパラメータ情報に基づいて干渉制御を行う、
前記(12)から(16)のいずれか1項に記載のアクセスポイント装置。
(18)
前記パラメータ情報または前記第2のパラメータ情報を集約した集約パラメータ情報を生成する生成部と、
前記集約パラメータ情報を、前記BSS以外の他BSSに所属し干渉制御を行うアクセスポイント装置へ報告する報告部をさらに備える、
前記(17)に記載のアクセスポイント装置。
(19)
自装置が属するBSS以外の他ネットワークから送信された信号に関するパラメータ情報をステーション装置から受信することと、
前記パラメータ情報に基づいて干渉制御を行うことと、を有する、
コンピュータにより実行される通信制御方法。
(20)
自装置が属するBSS以外の他ネットワークから送信された信号に関するパラメータ情報をステーション装置から受信することと、
前記パラメータ情報に基づいて干渉制御を行うことと、
をコンピュータに実現させるためのプログラム。
20 BSSのパラメータ情報の送信に用いられる情報エレメント
30 OBSSのパラメータ情報の送信に用いられる情報エレメント
40 エネルギー検知パラメータ情報の送信に用いられる情報エレメント
100 STA
110 無線通信部
120 データ処理部
130 制御部
200 AP
210 無線通信部
220 データ処理部
230 制御部
Claims (20)
- 自装置が属するBSS以外の他ネットワークから送信された信号を受信する受信部と、
前記信号に関するパラメータ情報を取得する取得部と、
前記パラメータ情報を、前記BSS内の、干渉制御を行うアクセスポイント装置へ報告する報告部と、を備える、
ステーション装置。 - 前記他ネットワークは、前記BSSにオーバーラップするOBSSである、
請求項1に記載のステーション装置。 - 前記パラメータ情報は、変調方式情報、送信電力情報、BSS識別情報、RSSI情報、バージョン情報、タイプ情報または伝送路利用時間情報を含む、
請求項2に記載のステーション装置。 - 前記他ネットワークは、セルラーネットワークである、
請求項1に記載のステーション装置。 - 前記パラメータ情報は、RSSI情報、伝送路利用時間情報を含む、
請求項4に記載のステーション装置。 - 前記受信部は、前記BSSから送信された信号を受信した場合、
前記取得部は、前記BSSから送信された信号に関する第2のパラメータ情報を取得し、
前記報告部は、前記第2のパラメータ情報を前記アクセスポイント装置へ報告する、
請求項1に記載のステーション装置。 - 前記受信部は、前記アクセスポイント装置が前記パラメータ情報または前記第2のパラメータ情報を集約して生成した集約パラメータ情報を受信し、
前記報告部は、前記集約パラメータ情報を、前記BSS以外の他BSSに所属し干渉制御を行うアクセスポイント装置へ報告する、
請求項6に記載のステーション装置。 - 前記パラメータ情報に含まれるBSS識別情報に基づいて、前記信号が前記BSSから送信された信号であるか否かの判定を行う判定部をさらに備え、
前記報告部は、前記判定に基づいて前記パラメータ情報を干渉情報として前記アクセスポイント装置へ報告する、
請求項1に記載のステーション装置。 - 前記取得部は、前記ステーション装置が電源に接続されている場合、または、前記ステーション装置が移動していない場合に前記パラメータ情報を取得する、
請求項1に記載のステーション装置。 - 自装置が属するBSS以外の他ネットワークから送信された信号を受信することと、
前記信号に関するパラメータ情報を取得することと、
前記パラメータ情報を、前記BSS内の、干渉制御を行うアクセスポイント装置へ報告することと、を有する、
コンピュータにより実行される無線制御方法。 - 自装置が属するBSS以外の他ネットワークから送信された信号を受信することと、
前記信号に関するパラメータ情報を取得することと、
前記パラメータ情報を、前記BSS内の、干渉制御を行うアクセスポイント装置へ報告することと、
をコンピュータに実現させるためのプログラム。 - 自装置が属するBSS以外の他ネットワークから送信された信号に関するパラメータ情報をステーション装置から受信する受信部と、
前記パラメータ情報に基づいて干渉制御を行う制御部と、を備える、
アクセスポイント装置。 - 前記他ネットワークは、前記BSSにオーバーラップするOBSSである、
請求項12に記載のアクセスポイント装置。 - 前記パラメータ情報は、変調方式情報、送信電力情報、BSS識別情報、RSSI情報、バージョン情報、タイプ情報または伝送路利用時間情報を含む、
請求項13に記載のアクセスポイント装置。 - 前記他ネットワークは、セルラーネットワークである、
請求項12に記載のアクセスポイント装置。 - 前記パラメータ情報は、RSSI情報、伝送路利用時間情報を含む、
請求項15に記載のアクセスポイント装置。 - 前記受信部は、前記BSSから送信された信号に関する第2のパラメータ情報を前記ステーション装置から受信し、
前記制御部は、前記パラメータ情報および前記第2のパラメータ情報に基づいて干渉制御を行う、
請求項12に記載のアクセスポイント装置。 - 前記パラメータ情報または前記第2のパラメータ情報を集約した集約パラメータ情報を生成する生成部と、
前記集約パラメータ情報を、前記BSS以外の他BSSに所属し干渉制御を行うアクセスポイント装置へ報告する報告部をさらに備える、
請求項17に記載のアクセスポイント装置。 - 自装置が属するBSS以外の他ネットワークから送信された信号に関するパラメータ情報をステーション装置から受信することと、
前記パラメータ情報に基づいて干渉制御を行うことと、を有する、
コンピュータにより実行される通信制御方法。 - 自装置が属するBSS以外の他ネットワークから送信された信号に関するパラメータ情報をステーション装置から受信することと、
前記パラメータ情報に基づいて干渉制御を行うことと、
をコンピュータに実現させるためのプログラム。
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019149744A (ja) * | 2018-02-28 | 2019-09-05 | 株式会社国際電気通信基礎技術研究所 | 無線基地局および無線通信方法 |
WO2020085254A1 (ja) * | 2018-10-24 | 2020-04-30 | 日本電信電話株式会社 | 無線lan通信品質推定方法、無線lan通信品質推定システム、情報収集装置および無線lan通信品質推定装置 |
CN112567782A (zh) * | 2018-08-16 | 2021-03-26 | 索尼公司 | 无线通信装置和无线通信方法 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3809745A4 (en) * | 2018-06-21 | 2021-11-24 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | MEASUREMENT CONTROL METHOD AND DEVICE AS WELL AS TERMINAL DEVICE |
JP7225177B2 (ja) * | 2020-09-29 | 2023-02-20 | 任天堂株式会社 | 通信システム、通信方法、通信装置、および通信プログラム |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013058836A (ja) * | 2011-09-07 | 2013-03-28 | Canon Inc | 送信装置、送信方法およびプログラム |
JP5360653B2 (ja) | 2009-08-20 | 2013-12-04 | 株式会社国際電気通信基礎技術研究所 | 電力制御装置およびそれを備えた通信ネットワークシステム |
JP5356364B2 (ja) | 2010-12-21 | 2013-12-04 | 日本電信電話株式会社 | 無線lan優先制御方法、無線lanシステムおよびアクセスポイント装置 |
US20150195777A1 (en) * | 2012-07-16 | 2015-07-09 | Broadcom Corporation | Method and apparatus for providing improved detection of overlapping networks |
JP2016501465A (ja) * | 2012-11-08 | 2016-01-18 | インターデイジタル パテント ホールディングス インコーポレイテッド | ワイヤレスローカルエリアネットワークにおける均一な複数のアクセスポイントカバレージのための媒体アクセス制御のための方法および装置 |
JP2016503244A (ja) * | 2012-12-11 | 2016-02-01 | パナソニック株式会社 | 無線通信システムにおける重複チャンネルによって引き起こされる干渉を減少させる方法 |
JP2016507183A (ja) * | 2013-01-11 | 2016-03-07 | インターデイジタル パテント ホールディングス インコーポレイテッド | Wlanオーバラッピング基本サービスセットのネットワーク内での通信のための方法および装置 |
WO2016112306A1 (en) * | 2015-01-09 | 2016-07-14 | Interdigital Patent Holdings, Inc. | Bss-color enhanced transmission in wlans (bss-cet) |
JP2016524377A (ja) * | 2013-05-03 | 2016-08-12 | インターデイジタル パテント ホールディングス インコーポレイテッド | WiFiセクタ化MAC強化のための方法 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7039017B2 (en) * | 2001-12-28 | 2006-05-02 | Texas Instruments Incorporated | System and method for detecting and locating interferers in a wireless communication system |
US8520617B2 (en) * | 2009-11-06 | 2013-08-27 | Motorola Mobility Llc | Interference mitigation in heterogeneous wireless communication networks |
US8681660B2 (en) * | 2010-10-01 | 2014-03-25 | Clearwire Ip Holdings Llc | Enabling coexistence between FDD and TDD wireless networks |
US9544811B2 (en) * | 2012-11-19 | 2017-01-10 | Qualcomm Incorporated | Systems and methods for beacon timing adjustment in wireless networks |
US9432854B2 (en) * | 2013-09-13 | 2016-08-30 | Nokia Corporation | Interference avoidance between overlapping wireless networks |
US9838940B2 (en) * | 2013-09-18 | 2017-12-05 | Qualcomm, Incorporated | Packet transmission deferral based on BSSID information |
US9820162B2 (en) * | 2014-01-24 | 2017-11-14 | Mediatek Singapore Pte Ltd. | Adaptive CCA and TX power level adjustment for dense deployment of wireless networks |
US9622189B2 (en) * | 2014-03-28 | 2017-04-11 | Zte Corporation | Techniques for fast delivery of radio information |
US20160081042A1 (en) * | 2014-09-12 | 2016-03-17 | Nokia Corporation | Communication Efficiency |
US10051588B2 (en) | 2014-11-27 | 2018-08-14 | Mediatek Inc. | Collaborative OBSS interference mitigation for wireless communication systems |
WO2016167438A1 (ko) * | 2015-04-15 | 2016-10-20 | 엘지전자 주식회사 | 무선랜 시스템에서 신호를 송수신하는 방법 및 이를 위한 장치 |
US10278022B2 (en) * | 2015-05-06 | 2019-04-30 | Qualcomm Incorporated | Communication deferral policies to increase reuse |
BR112019007966A2 (pt) * | 2016-10-28 | 2019-07-02 | Sony Corp | dispositivo de comunicação, método de controle de comunicação executado por um computador, e, programa. |
US10973052B2 (en) * | 2017-11-07 | 2021-04-06 | Mediatek Singapore Pte. Ltd. | Transmission between basic service sets in wireless networks considering spatial reuse |
US10736143B2 (en) * | 2018-09-17 | 2020-08-04 | Cisco Technology, Inc. | Threshold optimization for overlapping basic service sets in a wireless network |
US11012469B2 (en) * | 2019-01-22 | 2021-05-18 | Cisco Technology, Inc. | Detecting and preventing denial of service attacks due to fraudulent BSS color collision events |
US11678326B2 (en) * | 2019-07-12 | 2023-06-13 | Mediatek Singapore Pte. Ltd. | Multi-access point uplink collaboration |
WO2021177587A1 (ko) * | 2020-03-02 | 2021-09-10 | 엘지전자 주식회사 | 공간 재사용을 이용한 멀티 ap 전송에서 송신 전력 |
KR20220149515A (ko) * | 2020-03-04 | 2022-11-08 | 소니그룹주식회사 | 무선 기지국 및 무선 단말기 |
-
2017
- 2017-07-26 WO PCT/JP2017/027072 patent/WO2018055901A1/ja active Application Filing
- 2017-07-26 US US16/334,380 patent/US11438778B2/en active Active
- 2017-07-26 JP JP2018540663A patent/JP7205228B2/ja active Active
- 2017-07-26 KR KR1020197007441A patent/KR102334600B1/ko active IP Right Grant
- 2017-07-26 EP EP17852682.8A patent/EP3518571A4/en active Pending
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-
2022
- 2022-07-22 US US17/870,859 patent/US11943650B2/en active Active
-
2024
- 2024-03-08 US US18/599,268 patent/US20240251277A1/en active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5360653B2 (ja) | 2009-08-20 | 2013-12-04 | 株式会社国際電気通信基礎技術研究所 | 電力制御装置およびそれを備えた通信ネットワークシステム |
JP5356364B2 (ja) | 2010-12-21 | 2013-12-04 | 日本電信電話株式会社 | 無線lan優先制御方法、無線lanシステムおよびアクセスポイント装置 |
JP2013058836A (ja) * | 2011-09-07 | 2013-03-28 | Canon Inc | 送信装置、送信方法およびプログラム |
US20150195777A1 (en) * | 2012-07-16 | 2015-07-09 | Broadcom Corporation | Method and apparatus for providing improved detection of overlapping networks |
JP2016501465A (ja) * | 2012-11-08 | 2016-01-18 | インターデイジタル パテント ホールディングス インコーポレイテッド | ワイヤレスローカルエリアネットワークにおける均一な複数のアクセスポイントカバレージのための媒体アクセス制御のための方法および装置 |
JP2016503244A (ja) * | 2012-12-11 | 2016-02-01 | パナソニック株式会社 | 無線通信システムにおける重複チャンネルによって引き起こされる干渉を減少させる方法 |
JP2016507183A (ja) * | 2013-01-11 | 2016-03-07 | インターデイジタル パテント ホールディングス インコーポレイテッド | Wlanオーバラッピング基本サービスセットのネットワーク内での通信のための方法および装置 |
JP2016524377A (ja) * | 2013-05-03 | 2016-08-12 | インターデイジタル パテント ホールディングス インコーポレイテッド | WiFiセクタ化MAC強化のための方法 |
WO2016112306A1 (en) * | 2015-01-09 | 2016-07-14 | Interdigital Patent Holdings, Inc. | Bss-color enhanced transmission in wlans (bss-cet) |
Non-Patent Citations (2)
Title |
---|
See also references of EP3518571A4 |
YUSUKE ASAI ET AL.: "Frame Sequence of Interference Management Using Beamforming Technique in OBSS Environment", IEEE 802.11-10/ 0831R0, 12 July 2010 (2010-07-12), pages 16 - 21, XP017676564, Retrieved from the Internet <URL:https://mentor.ieee.org/802.11/ dcn/10/11-10-0831-00-00ac-frame-sequence-of- interference-management-using-beamforming- technique-in-obss-environment.ppt> [retrieved on 20170929] * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019149744A (ja) * | 2018-02-28 | 2019-09-05 | 株式会社国際電気通信基礎技術研究所 | 無線基地局および無線通信方法 |
JP7178685B2 (ja) | 2018-02-28 | 2022-11-28 | 株式会社国際電気通信基礎技術研究所 | 無線基地局および無線通信方法 |
CN112567782A (zh) * | 2018-08-16 | 2021-03-26 | 索尼公司 | 无线通信装置和无线通信方法 |
EP3840446A4 (en) * | 2018-08-16 | 2021-11-03 | Sony Group Corporation | WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD |
US11930511B2 (en) | 2018-08-16 | 2024-03-12 | Sony Corporation | Wireless communication apparatus and wireless communication method |
CN112567782B (zh) * | 2018-08-16 | 2024-08-23 | 索尼公司 | 无线通信装置和无线通信方法 |
WO2020085254A1 (ja) * | 2018-10-24 | 2020-04-30 | 日本電信電話株式会社 | 無線lan通信品質推定方法、無線lan通信品質推定システム、情報収集装置および無線lan通信品質推定装置 |
JP2020068470A (ja) * | 2018-10-24 | 2020-04-30 | 日本電信電話株式会社 | 無線lan通信品質推定方法、無線lan通信品質推定システム、情報収集装置および無線lan通信品質推定装置 |
JP7077914B2 (ja) | 2018-10-24 | 2022-05-31 | 日本電信電話株式会社 | 無線lan通信品質推定方法、無線lan通信品質推定システム、情報収集装置および無線lan通信品質推定装置 |
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KR20190055083A (ko) | 2019-05-22 |
KR102334600B1 (ko) | 2021-12-06 |
US11438778B2 (en) | 2022-09-06 |
JP7205228B2 (ja) | 2023-01-17 |
EP4436244A2 (en) | 2024-09-25 |
EP4436244A3 (en) | 2024-10-09 |
US11943650B2 (en) | 2024-03-26 |
US20240251277A1 (en) | 2024-07-25 |
EP3518571A1 (en) | 2019-07-31 |
US20220361031A1 (en) | 2022-11-10 |
JPWO2018055901A1 (ja) | 2019-07-04 |
EP3518571A4 (en) | 2019-08-21 |
US20210314799A1 (en) | 2021-10-07 |
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