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WO2016026112A1 - 一种频率复用方法及相关装置 - Google Patents

一种频率复用方法及相关装置 Download PDF

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Publication number
WO2016026112A1
WO2016026112A1 PCT/CN2014/084892 CN2014084892W WO2016026112A1 WO 2016026112 A1 WO2016026112 A1 WO 2016026112A1 CN 2014084892 W CN2014084892 W CN 2014084892W WO 2016026112 A1 WO2016026112 A1 WO 2016026112A1
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WO
WIPO (PCT)
Prior art keywords
access point
basic service
service set
frequency reuse
frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2014/084892
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English (en)
French (fr)
Inventor
杨讯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP14899947.7A priority Critical patent/EP3185602B1/en
Priority to PCT/CN2014/084892 priority patent/WO2016026112A1/zh
Priority to CN201480080235.4A priority patent/CN106471836B/zh
Publication of WO2016026112A1 publication Critical patent/WO2016026112A1/zh
Priority to US15/436,553 priority patent/US11234133B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • 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
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/04—Traffic adaptive resource partitioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a frequency reuse method and related apparatus.
  • interference Due to the mutual interference of neighboring cells in the network, the capacity of the entire network is limited. With the development of wireless communication, various interference processing methods have been invented to cope with interference problems in different scenarios. There are many methods of interference processing, such as: interference avoidance, interference alignment, cooperative transmission, cooperative beamforming, and the like. Among them, interference avoidance is the simplest and easiest way to achieve.
  • the first interference avoidance method is frequency reuse, that is, by using non-overlapping frequency bands between adjacent cells, using the four-color principle and planning through the network, the co-channel interference from other cells is minimized.
  • frequency reuse that is, by using non-overlapping frequency bands between adjacent cells, using the four-color principle and planning through the network, the co-channel interference from other cells is minimized.
  • the utilization of frequency resources in this way is not high.
  • Fractional frequency reuse is a simple and improved method of frequency reuse. Simply put, a cell is divided into a central area and an edge area (even further divided into an edge area and an overlapping area), a central area and an edge area.
  • the frequency bands are different.
  • a common method is to use the same frequency band in the central area of each cell and reduce the power of the central area.
  • the frequency band that does not overlap with other cells is used in the edge area to achieve the effect of interference avoidance.
  • the frequency bands of adjacent areas can be the same, so that the base station can use advanced signal processing technology to provide users with more capacity in the edge area.
  • the CSMA/CA Carrier Sense Multiple Access with Collision Avoidance
  • Embodiments of the present invention provide a frequency multiplexing method and related apparatus for reducing frequency interference in a Wi-Fi network.
  • a first aspect of the embodiments of the present invention provides an access point device, including: a first sending unit, configured to send a first message to the station, where the first message carries indication information that the basic service set is in a fractional frequency reuse mode;
  • a first receiving unit configured to receive a second message sent by the station, where the second message carries indication information that the station supports a fractional frequency reuse mode
  • an execution unit configured to, according to the second message received by the receiving unit, determine that the station supports the fractional frequency reuse mode, and communicate with the station in a fractional frequency reuse mode.
  • the access point device further includes:
  • a scanning unit configured to scan a channel, to obtain frequency reuse information of each basic service set around the access point
  • a determining unit configured to determine a frequency multiplexing manner of the access point according to a multiplexing policy and frequency multiplexing information of each basic service set around the access point acquired by the scanning unit; To be within the overlapping area of the basic service set, the access point draws a frequency partitioning method that maximizes the basic service set throughput or maximizes the number of supported users.
  • the determining unit is specifically configured to: when the overlapping region uses a scheme of orthogonal frequency allocation, allocate an overlap region of the basic service set around the access point and the access point with the access point The frequency bands in which the surrounding basic service sets do not overlap;
  • the determining unit is specifically configured to: when the overlapping region uses a scheme of cooperation between at least two basic service sets, allocate an overlap region of the basic service set around the access point and the access point
  • the basic service sets of the access points are in the same working frequency band.
  • the access point device further includes:
  • a second receiving unit configured to receive a third message sent by the station, where the third message carries frequency reuse information of each basic service set in the vicinity of the station;
  • an adjusting unit configured to adjust a frequency multiplexing manner of the access point according to the multiplexing policy, frequency multiplexing information of each basic service set around the access point, and the third message;
  • a second sending unit configured to send, to the station, a parameter of a frequency multiplexing manner of the access point adjusted by the adjusting unit.
  • the basic service set includes at least two virtual basic service sets, each virtual basic service set corresponds to one virtual basic service set identifier, and the virtual basic service set and the access point Corresponding to the working frequency band; the virtual basic service set identifier is associated with a real basic service set identifier, the real basic service set identifier being a media access control MAC address of the access point.
  • a second aspect of the embodiments of the present invention provides a site device, including:
  • a receiving module configured to receive a first message sent by an access point, where the first message carries indication information that the basic service set is in a fractional frequency reuse mode
  • a first sending module configured to send a second message to the access point, where the second message carries indication information that the station supports the fractional frequency reuse mode
  • An execution module configured to: after the access point determines, according to the second message sent by the first sending module, that the station supports a fractional frequency reuse mode, communicate with the access point in a fractional frequency reuse mode .
  • the site device further includes:
  • a second sending module configured to send a third message to the access point, where the third message carries frequency reuse information of each basic service set around the station;
  • An obtaining module configured to acquire a parameter of a frequency reuse manner of the access point adjusted by the access point; and a parameter of the frequency reuse mode of the access point is used by the access point according to the scanned
  • the frequency reuse information, the multiplexing policy, and the third message adjustment of each basic service set around the inbound point; the multiplexing strategy is that the access point is maximized in the overlapping area of the basic service set The service set throughput or the frequency division method that maximizes the number of supported users.
  • the basic service set includes at least two virtual basic service sets.
  • Each virtual basic service set corresponds to a virtual basic service set identifier, and the virtual basic service set corresponds to a working frequency band of the access point; the virtual basic service set identifier and the real basic A service set identifier is associated, the real basic service set identifier being a media access control MAC address of the access point.
  • a third aspect of the embodiments of the present invention provides a frequency multiplexing method, including:
  • the access point sends a first message to the station, where the first message carries the indication information that the basic service set is in the fractional frequency multiplexing mode;
  • the access point After the access point determines, according to the second message, that the station supports the fractional frequency reuse mode, the access point communicates with the station in a fractional frequency reuse mode.
  • the method before the sending, by the access point, the first message to the station, the method includes:
  • the access point scans a channel to obtain frequency reuse information of each basic service set around the access point
  • the access point determines its own frequency reuse mode according to the multiplexing policy and the obtained frequency reuse information of each basic service set around the access point; the multiplexing policy is an overlap in the basic service set. Within the area, the access point extracts a frequency division manner that maximizes the basic service set throughput or maximizes the number of supported users.
  • the determining the frequency multiplexing manner of the self includes:
  • the overlapping regions of the basic service sets around the access point and the access point are not overlapped with the basic service sets surrounding the access point.
  • Frequency band or,
  • the overlapping area uses a scheme of cooperation between at least two basic service sets
  • the overlapping area of the basic service sets surrounding the access point and the access point is allocated and the basics of the access points are
  • the service set has the same working frequency band.
  • the method further includes:
  • the access point receives, by the access point, a third message sent by the station, where the third message carries frequency reuse information of each basic service set in the vicinity of the station;
  • the access point adjusts its own frequency reuse manner according to the multiplexing policy, frequency multiplexing information of each basic service set around the access point, and the third message;
  • the access point sends the adjusted parameters of its own frequency reuse mode to the station.
  • the basic service set includes at least two virtual basic service sets, each virtual basic service set corresponds to one virtual basic service set identifier, and the virtual basic service set and the access point Corresponding to the working frequency band; the virtual basic service set identifier is associated with a real basic service set identifier, the real basic service set identifier being a media access control MAC address of the access point.
  • a fourth aspect of the embodiments of the present invention provides a frequency multiplexing method, including:
  • the station receives the first message sent by the access point, where the first message carries the indication information that the basic service set is in the frequency division multiplexing mode;
  • the station After the access point determines that the station supports the fractional frequency reuse mode according to the second message, the station communicates with the access point in a fractional frequency reuse mode.
  • the method further includes:
  • the multiplexing strategy is that the access point is maximized in the overlapping area of the basic service set The service set throughput or the frequency division method that maximizes the number of supported users.
  • the basic service set includes at least two virtual basic service sets.
  • Each virtual basic service set corresponds to a virtual basic service set identifier, and the virtual basic service set corresponds to a working frequency band of the access point; the virtual basic service set identifier and the real basic A service set identifier is associated, the real basic service set identifier being a media access control MAC address of the access point.
  • the embodiments of the present invention have the following advantages:
  • the access point after the access point determines, according to the second message, that the station supports the fractional frequency reuse mode, the access point communicates with the station in the fractional frequency reuse mode, so that the station is in the fractional frequency.
  • Working in the multiplex mode effectively reduces frequency interference in the Wi-Fi network.
  • FIG. 1 is a schematic structural diagram of an embodiment of an access point device according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of another embodiment of an access point device according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of another embodiment of an access point device according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of another embodiment of an access point device according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of an embodiment of a site device according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of another embodiment of a site device according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of another embodiment of a site device according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic flowchart diagram of an embodiment of a frequency reuse method according to an embodiment of the present invention.
  • FIG. 9 is a schematic flowchart diagram of another embodiment of a frequency reuse method according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of a working frequency band distribution of two adjacent access points according to an embodiment of the present invention
  • FIG. 11 is a schematic structural diagram of an extended indication of an extended neighbor report according to an embodiment of the present invention
  • an embodiment of an access point device in an embodiment of the present invention includes:
  • the first sending unit 101 is configured to send, to the station, a first message, where the first message carries the indication information that the basic service set (BSS) is in the fractional frequency multiplexing mode;
  • BSS basic service set
  • the first receiving unit 102 is configured to receive a second message sent by the station, where the second message is carried
  • the station supports indication information of the fractional frequency reuse mode
  • the executing unit 103 is configured to perform, according to the second message received by the first receiving unit 102, that the station supports the fractional frequency reuse mode, and communicate with the station in the fractional frequency reuse mode.
  • the foregoing BSS includes at least two virtual BSSs, and each virtual BSS corresponds to a virtual BSSID (Basic Service Set Identifier), and the virtual BSS corresponds to an operating frequency band of the access point; the virtual BSSID Associated with the real BSSID, the real BSSID is the MAC (Media Access Control Address) address of the access point.
  • BSSID Basic Service Set Identifier
  • MAC Media Access Control Address
  • the first message includes a field, where the field is used to indicate that the BSS is in a fractional frequency reuse mode; and the fractional frequency reuse mode is implemented by at least two virtual BSSs and a working frequency segment corresponding to each virtual BSS.
  • the first message can be a Beacon frame of an information bit or other management frame.
  • the station supports the fractional frequency multiplexing mode, which means that the station can recognize that the BSS is in the fractional frequency multiplexing mode, and obtain the frequency band information corresponding to the BSS.
  • the first sending unit 101 sends a first message to the station, where the first message carries the indication information that the BSS is in the fractional frequency multiplexing mode; the first receiving unit 102 receives the second message sent by the station.
  • the second message carries the indication information that the station supports the fractional frequency reuse mode; after determining that the station supports the fractional frequency reuse mode according to the second message received by the first receiving unit 102, the executing unit 103 performs The step of communicating with the site in fractional frequency reuse mode. Therefore, the station works in the fractional frequency reuse mode, effectively reducing the frequency interference in the Wi-Fi network.
  • the access point device may initialize the frequency reuse mode of the access point according to the multiplexing policy and the frequency multiplexing information of each basic service set around the access point.
  • the above access point device further includes:
  • the scanning unit 201 is configured to scan a channel to obtain frequency reuse information of each basic service set around the access point;
  • the determining unit 202 is configured to determine a frequency multiplexing manner of the access point according to the multiplexing policy and the frequency multiplexing information of each basic service set around the access point acquired by the scanning unit 201.
  • the multiplexing policy is Within the overlapping area of the basic service set, the access point draws a frequency partitioning method that maximizes the basic service set throughput or maximizes the number of supported users.
  • the scanning unit 201 scans the working channel to obtain each BSS around the access point.
  • Frequency reuse information It can be understood that there are multiple ways to obtain the frequency reuse information of each BSS in the vicinity of the access point, for example, by detecting a signal sent by an access point or a station of each neighboring BSS, where the signal carries the relevant information domain.
  • the above acquisition methods or indication methods are not limited herein.
  • the frequency reuse information includes the working frequency band of at least two virtual BSSs and the correspondence between the virtual BSSID and the real BSSID.
  • the access point is used in the current OBSS (Overlapping Basic Service Set, basic service).
  • OBSS Overlapping Basic Service Set, basic service
  • different multiplexing strategies have different multiplexing methods. Common methods include but are not limited to the following rules:
  • the overlapping region uses a scheme of orthogonal frequency allocation
  • the data transmitted by the BSS and the adjacent BSS overlapping region uses a frequency band that does not overlap with the adjacent BSS;
  • the overlapping region uses a scheme in which at least two BSSs cooperate, the BSS and the adjacent BSS overlapping region are allocated the same working frequency band as the adjacent BSS.
  • the above overlapping area refers to the overlapping area of one real BSS (and its virtual BSS) with another real BSS (and its virtual BSS).
  • the following multiplexing policies include the following:
  • the frequency bands used in the central area are determined by each access point;
  • an access point in the OBSS environment can be effectively initialized with its own frequency multiplexing mode, thereby determining the number of virtual BSS and the work of each virtual BSS. Frequency band.
  • the determining unit 202 initializes the frequency multiplexing manner of the access point according to the multiplexing policy and the frequency multiplexing information of each BSS around the access point acquired by the scanning unit 201, thereby determining the number of virtual BSSs and each The working frequency band of the virtual BSS provides a flexible and compatible fractional frequency reuse mode.
  • the embodiment of the present invention may further perform frequency re-establishment on the access point. Adjusting the method, optionally, as shown in FIG. 3, the access point device further includes: a second receiving unit 301, configured to receive a third message sent by the station, where the third message carries Frequency reuse information of the basic service set;
  • the adjusting unit 302 is configured to adjust a frequency multiplexing manner of the access point according to the foregoing multiplexing policy, frequency multiplexing information of each basic service set around the access point, and the third message;
  • the second sending unit 303 is configured to send, to the station, a parameter of a frequency multiplexing manner of the access point adjusted by the adjusting unit.
  • the third message is an extended neighbor report that the station periodically sends to the access point, and is used to report frequency reuse information of each BSS around the station to the access point;
  • the foregoing multiplexing strategy has been described in FIG. 2 of the foregoing embodiment, and details are not described herein again.
  • the specific parameters of the frequency reuse mode of the adjusted access point of the adjustment unit 302 are determined according to the multiplexing policy and the change of the frequency reuse information of the access point and the BSS around the station. For details, refer to the following scheme:
  • the overlapping region uses a scheme of orthogonal frequency allocation
  • the data transmitted by the BSS and the adjacent BSS overlapping region uses a frequency band that does not overlap with the adjacent BSS;
  • the overlapping region uses a scheme in which at least two BSSs cooperate, the BSS and the adjacent BSS overlapping region are allocated the same working frequency band as the adjacent BSS.
  • the above overlapping area refers to the overlapping area of one real BSS (and its virtual BSS) with another real BSS (and its virtual BSS).
  • the frequency bands used in the central area are determined by each access point;
  • the frequency reuse mode of the access point can be effectively adjusted, thereby adjusting the number of virtual BSSs and the working frequency bands of each virtual BSS.
  • the adjusting unit 302 adjusts the frequency reuse of the access point according to the third message received by the second receiving unit 301, the frequency multiplexing information of each basic service set around the access point, and the multiplexing policy.
  • FIG. 1 to FIG. 3 illustrates the specific structure of the access point device from the perspective of the functional unit. The specific structure of the access point device is described from the hardware point of view below with reference to the embodiment shown in FIG. 4:
  • the access point device includes: a transmitter 401, a receiver 402, a processor 403, and a memory 404.
  • the access point device may have more or less components than those shown in FIG. 4, may combine two or more components, or may have different component configurations or settings, and each component may Hardware, software, or a combination of hardware and software, including one or more signal processing and/or application specific integrated circuits.
  • the above transmitter 401 is configured to perform the following operations:
  • the receiver 402 is configured to perform the following operations:
  • the processor 403 is configured to perform the following operations:
  • the first message sent by the transmitter 401 includes a field, where the field is used to indicate that the basic service set is in a fractional frequency reuse mode;
  • the above transmitter 401 is also used to perform the following operations:
  • the receiver 402 is further configured to perform the following operations:
  • the processor 403 is further configured to perform the following operations:
  • the multiplexing strategy is in an overlapping area of the basic service set, Access Pointing to obtain a frequency division manner for maximizing the basic service set throughput or maximizing the number of supported users; adjusting the connection according to the multiplexing policy, frequency multiplexing information of each basic service set around the access point, and the third message The frequency reuse method of the in point.
  • the processor 403 can effectively initialize the frequency multiplexing mode of the access point, and adjust the frequency multiplexing mode of the access point according to the change of the frequency multiplexing information of each surrounding BSS, so that the access point is Communicate with the site in a flexible and compatible fractional frequency reuse mode, effectively reducing frequency interference in Wi-Fi networks.
  • the site device in the embodiment of the present invention includes:
  • the receiving module 501 is configured to receive a first message sent by the access point, where the first message carries the indication information that the basic service set is in the fractional frequency reuse mode;
  • the first sending module 502 is configured to send, to the access point, a second message, where the second message carries indication information that the station supports the fractional frequency reuse mode;
  • the executing module 503 is configured to: after the access point determines, according to the second message sent by the first sending module 502, that the station supports the fractional frequency reuse mode, communicate with the access point in the fractional frequency reuse mode.
  • the foregoing BSS includes at least two virtual BSSs, each virtual BSS corresponding to one virtual BSSID, where the virtual BSS corresponds to an operating frequency band of the access point; the virtual BSSID is associated with the real BSSID, and the real BSSID is the connection The MAC address of the inbound point.
  • the first message includes a field, where the field is used to indicate that the BSS is in a fractional frequency reuse mode; and the fractional frequency reuse mode is implemented by at least two virtual BSSs and a working frequency segment corresponding to each virtual BSS.
  • the first message can be a Beacon frame or other management frame of an information bit.
  • the station supports the fractional frequency multiplexing mode, which means that the station can recognize that the BSS is in the fractional frequency multiplexing mode, and obtain the frequency band information corresponding to the BSS.
  • communicating with the access point in the fractional frequency reuse mode means that the access point can select to simultaneously send data for the station on the working frequency band of at least two virtual BSSs, or work the site through the management frame.
  • the frequency band is free to switch within the frequency band in which the access point operates.
  • the receiving module 501 receives the first message sent by the access point, where the The first message sending module 502 sends the second message to the access point, where the second message carries the second message, where the second message carries the indication information of the station supporting the fractional frequency reuse mode.
  • the executing module 503 performs the step of communicating with the access point in the fractional frequency multiplexing mode. Therefore, the station works in the fractional frequency reuse mode, effectively reducing the frequency interference in the Wi-Fi network.
  • the site device may send the related information to the access point to adjust the frequency reuse mode of the access point to the access point.
  • the foregoing site device further includes: The module 601 is configured to send, to the access point, a third message, where the third message carries frequency reuse information of each basic service set around the station;
  • the obtaining module 602 is configured to obtain a parameter of the frequency reuse mode of the access point adjusted by the access point, where the parameter of the frequency reuse mode of the access point is determined by the access point according to the scanned access point Frequency reuse information, multiplexing strategy, and third message adjustment of each basic service set; the multiplexing strategy is to maximize the basic service set throughput or maximum in the overlapping area of the basic service set Support the frequency division method of the number of users.
  • the third message is an extended neighbor report that is periodically sent by the station to the access point, and is used to report frequency multiplexing information of each BSS in the vicinity of the station to the access point;
  • the frequency multiplexing information includes The working frequency band of at least two virtual BSSs and the correspondence between the virtual BSSID and the real BSSID;
  • the specific parameters of the frequency reuse mode of the adjusted access point are based on the multiplexing policy and the frequency of each access point and the BSS around the station The change in the reuse information is determined.
  • the access point can maximize the throughput of its own BSS or maximize the number of supported users in order to obtain the frequency division method in the current OBSS environment. Therefore, different multiplexing strategies have different multiplexing methods. Common methods include but are not limited to the following rules:
  • the overlapping region uses a scheme of orthogonal frequency allocation
  • the data transmitted by the BSS and the adjacent BSS overlapping region uses a frequency band that does not overlap with the adjacent BSS;
  • the BSS and the adjacent BSS overlap region are allocated the same working frequency band as the neighbor BSS.
  • the above overlapping area refers to an overlapping area of one real BSS (and its virtual BSS) with another real BSS (and its virtual BSS).
  • the following multiplexing policies include the following:
  • the frequency bands used in the central area are determined by each access point;
  • the second sending module 601 sends a third message to the access point, so that the access point according to the scanned frequency reuse information, the multiplexing policy, and the first basic service set around the access point.
  • the frequency reuse information of each BSS around the station carried in the three messages adjusts the frequency reuse mode of the access point to provide a flexible compatible fractional frequency reuse mode.
  • FIG. 5 to FIG. 6 illustrates the specific structure of the site device from the perspective of the functional module.
  • the specific structure of the site device is described below from the hardware point of view with the embodiment shown in FIG. 7:
  • the site device includes: a receiver 701, a transmitter 702, a processor 703, and a memory 704.
  • the site device may have more or less components than those shown in FIG. 7, may combine two or more components, or may have different component configurations or settings, and each component may include Hardware, software, or a combination of hardware and software implementations of one or more signal processing and/or application specific integrated circuits.
  • the receiver 701 is configured to perform the following operations:
  • the above transmitter 702 is configured to perform the following operations:
  • the processor 703 is configured to perform the following operations:
  • the access point determines that the station supports the fractional frequency reuse mode according to the second message, and performs communication in the fractional frequency reuse mode with the access point;
  • the above transmitter 702 is further configured to perform the following operations: Sending, to the foregoing access point, a third message, where the third message carries frequency reuse information of each basic service set around the station;
  • the receiver 701 is further configured to perform the following operations:
  • the parameter of the frequency reuse mode of the access point is determined by the access point according to the frequency of each basic service set around the access point scanned Multiplexing information, multiplexing strategy, and the third message adjustment described above; the multiplexing strategy is to maximize the basic service set throughput or maximize the number of supported users in the overlapping area of the basic service set Frequency division method.
  • the processor 703 works with the access point in the flexible compatible fractional frequency reuse mode, thereby effectively reducing the Wi-Fi network. Frequency interference in.
  • an embodiment of a frequency reuse method in an embodiment of the present invention includes:
  • the access point sends a first message to the station.
  • the access point sends a first message to the station, where the first message carries the indication information that the BSS is in the fractional frequency reuse mode.
  • the foregoing access point receives the second message sent by the foregoing station.
  • the station After receiving the first message sent by the access point, the station sends a second message to the access point, where the second message carries the indication information that the station supports the fractional frequency reuse mode.
  • the station supports the fractional frequency reuse mode, which means that the station can recognize that the BSS is in the fractional frequency reuse mode, and obtain the frequency band information corresponding to the BSS.
  • the access point After the foregoing access point determines, according to the foregoing second message, that the site supports the fractional frequency reuse mode, the access point communicates with the site in a fractional frequency reuse mode.
  • the access point determines, according to the indication information of the station supporting the fractional frequency reuse mode carried in the second message, that the station supports the fractional frequency reuse mode, and the access point communicates with the station in the fractional multiplexing mode.
  • the communication between the access point and the station in the fractional frequency reuse mode indicates that the access point can select to simultaneously send data for the station on the working frequency band of at least two virtual BSSs, or the station is managed by the management frame.
  • the working frequency band is free to switch within the frequency band in which the access point operates.
  • the access point after the access point determines, according to the second message, that the station supports the fractional frequency reuse mode, the access point communicates with the station in the fractional frequency reuse mode, so that the station is used in fractional frequency reuse.
  • Working in mode effectively reducing frequency interference in Wi-Fi networks.
  • the frequency multiplexing method in the above embodiment may further initialize the frequency multiplexing mode of the access point according to the multiplexing policy and the frequency multiplexing information of the basic service sets in the vicinity of the access point.
  • Another embodiment of the frequency reuse method includes:
  • the access point scans the channel to obtain frequency reuse information of each basic service set around the access point.
  • the access point scans the working channel to obtain frequency reuse information of the basic service set BSS around the access point. It can be understood that the access point obtains the frequency multiplexing information of each neighboring BSS in multiple manners, for example, by detecting a signal sent by an access point or a station of each surrounding BSS, where the signal carries the relevant information domain.
  • the above specific acquisition methods or indication methods are not limited here.
  • the frequency multiplexing information for acquiring the neighboring BSSs may be specifically learned from the frequency multiplexing correspondence of the neighboring BSSs; for example, the following frequency multiplexing correspondence relationship: BSS m : [(BSS m ⁇ , CH m .), (BSS ml , CH ml ), ..., (BSS ⁇ , CH ⁇ )] .
  • BSS m [(BSS m ⁇ , CH m .), (BSS ml , CH ml ), ..., (BSS ⁇ , CH ⁇ )] .
  • BSS m [(BSS m ⁇ , CH m .), (BSS ml , CH ml ), ..., (BSS ⁇ , CH ⁇ )] .
  • BSS m [(BSS m ⁇ , CH m .), (BSS ml , CH ml ), ..., (BSS ⁇ , CH ⁇ )] .
  • CH m() is the frequency band in the
  • the management frame or data frame sent by the BSS site or the access point may carry only the virtual BSSID without the real BSSID (ie, the BSS m described above), and the station only needs to know each virtual BSS. And the working frequency band corresponding to the virtual BSS; wherein, the management frame or the data frame has an information indicating bit, where the information bit carries a frequency multiplexing correspondence of the BSS.
  • the management frame or the data frame sent by the site or the access point of the BSS m may identify whether the virtual BSSID refers to the virtual BSS or the real BSS; if it is the virtual BSS, it may further identify that the current BSSID refers to the center.
  • the BSS, the edge BSS, or the BSS of the overlapping area may be identified.
  • the foregoing access point determines its own frequency reuse mode according to the multiplexing policy and the obtained frequency reuse information of each basic service set around the access point.
  • the access point determines its own frequency reuse mode according to the multiplexing policy and the frequency reuse information of each basic service set around the access point acquired in step 901.
  • each virtual BSS corresponds to one virtual BSSID.
  • the virtual BSS corresponds to a frequency band multiplexed by the fractional frequency at which the access point operates.
  • the access point AP0 and the access point API supporting fractional frequency multiplexing; and the access point AP0 can operate in two frequency bands CHo and CH ⁇ , where C is the frequency band of the virtual BSS central area , the starting frequency is f. .
  • the ending frequency point is a frequency band of the virtual BSS edge region, the starting frequency point is f 10 , and the ending frequency point is f u ;
  • the foregoing multiplexing policy refers to which frequency division method the access point can maximize the throughput of its own BSS or maximize the number of supported users in the current OBSS environment. Therefore, different multiplexing strategies have different multiplexing methods. Common methods include but are not limited to the following rules:
  • the overlapping region uses a scheme of orthogonal frequency allocation
  • the data transmitted by the BSS and the adjacent BSS overlapping region uses a frequency band that does not overlap with the adjacent BSS;
  • the overlapping region uses a scheme in which at least two BSSs cooperate, the BSS and the adjacent BSS overlapping region are allocated the same working frequency band as the adjacent BSS.
  • the above overlapping area refers to the overlapping area of one real BSS (and its virtual BSS) with another real BSS (and its virtual BSS).
  • the following multiplexing policies include the following:
  • the frequency bands used in the central area are determined by each access point;
  • an access point in the OBSS environment can be effectively initialized with its own frequency multiplexing mode, thereby determining the number of virtual BSS and the work of each virtual BSS. Frequency band.
  • the foregoing access point sends a first message to the foregoing station.
  • the first message includes a field, where the field is used to indicate that the BSS is in a fractional frequency reuse mode; and the fractional frequency reuse mode is implemented by using at least two virtual BSSs and a working frequency band corresponding to each virtual BSS.
  • the access point may add a field in the Beacon or other management frame by means of information bits to indicate how many virtual BSS or Directly reflecting the correspondence between at least two virtual BSSIDs and real BSSIDs.
  • the access point not only indicates the number of the virtual BSS, but also indicates the address of the virtual BSS by using a bit bit in the field.
  • the method for indicating that the BSS is in the fractional frequency multiplexing mode is not limited herein. Send in any one or at least two bands.
  • the access point needs to further indicate the working frequency band of the virtual BSS in the Beacon or other management frame.
  • the at least two virtual BSSIDs are associated with a real BSSID.
  • the real BSSID is the MAC address of the access point, and the virtual BSSID corresponds to the respective virtual BSS. This correspondence can be expressed by the following expression:
  • BSS m (BSS m0 ,...,: BSS ), where the real BSSID of the BSS m access point, ( BSS m0 , . . . , BSS ⁇ ) is the k+1 virtual BSSID corresponding to the BSS suspend ⁇ .
  • the foregoing correspondence may be specifically indicated by a frame format.
  • the real BSSID may not be indicated, and only the virtual BSSID corresponding to each working frequency band may be indicated, for example: (BSS m . , ..., BSS if The real BSSID also corresponds to a working frequency band, and the indication manner may also be: (BSS m ., ..., BSS m , ..., BSS
  • the correspondence may also pass the real BSSID and the virtual BSSID.
  • a certain mapping relationship is implemented, for example, setting the two bits of the MSB (most Significant Bit) to 00, indicating that the BSSID is a virtual BSSID; and setting it to 11, indicating the real BSSID.
  • the correspondence and the mapping The method of indicating the relationship is not limited herein.
  • the foregoing access point receives the second message sent by the foregoing station.
  • the station sends a second message to the access point, where the second message carries the indication information that the station supports the frequency division multiplexing mode.
  • the station supports the fractional frequency multiplexing mode, that is, the station can recognize that the BSS is in the fractional frequency multiplexing mode, and obtain the frequency band information corresponding to the BSS.
  • the second message may be an association request frame or other frame sent by the station, and the frame carries an indication information bit of a capability field for indicating whether the station supports the fractional frequency reuse mode.
  • the fractional frequency reuse mode is supported, that is, the site can know the relationship between the virtual BSSID and the real BSSID.
  • the foregoing access point determines, according to the foregoing second message, that the site supports the fractional frequency reuse mode, and communicates with the site in the fractional frequency reuse mode.
  • the access point may select to send data for the station simultaneously on the working frequency band of at least two virtual BSSs, or may also The working frequency band of the station is freely switched in the frequency band in which the access point operates; similarly, the station may also be based on the relationship between the working frequency band corresponding to the at least two virtual BSSs, the at least two virtual BSSs, and the virtual BSS ( For example, whether it corresponds to the same real BSS) is freely switched in the frequency band in which the access point operates, and only the access point is allowed.
  • the access point initializes the frequency reuse mode of the access point according to the multiplexing policy and the obtained frequency multiplexing information of each BSS around the access point, thereby determining the number of virtual BSS and each virtual The BSS operates in a frequency band to provide a flexible and compatible fractional frequency reuse mode.
  • the frequency multiplexing method in the foregoing embodiment may also adjust the frequency reuse mode of the access point, as follows:
  • the access point receives a third message sent by the station, where the third message carries frequency reuse information of each basic service set around the station; the access point is based on the multiplexing policy, the connection The frequency multiplexing information of each basic service set around the in-point and the frequency multiplexing mode of the third message are adjusted, and the adjusted parameters of the frequency reuse mode are sent to the station.
  • the third message is an extended neighbor report that the station periodically sends to the access point, and is used to report frequency reuse information of each BSS around the station to the access point; Based on the existing neighbor report, the extended information may be supplemented with further information about the BSSID, such as whether the BSS is a real BSS, and whether the targeted area is a BSS edge area or a BSS central area.
  • An indication structure as shown in Fig. 11 is an example of an extended indication.
  • Element in the figure represents a unit identifier
  • Length represents a length
  • BSSID represents a basic service set identifier
  • BSSID Information represents basic service set information.
  • Operating Class indicates that the operation class is another 1 J
  • Channel Number indicates the channel number
  • PHY Type indicates the physical layer type
  • Optional Subelements indicates optional subunits
  • variable indicates variable points
  • AP Reachability indicates network access point detection
  • Security indicates network Security technology and its protocols
  • Key Scope represents the key domain
  • Capabilities represents the processing capability
  • Mobility Domain represents the mobile i or
  • High Throughput represents high throughput
  • Reserved means reserved
  • Virtual BSS represents virtual basic service set
  • BSS Edge represents the edge area of the basic service set
  • Real BSS represents the real basic service set.
  • the access point adjusts its own frequency reuse mode according to the received third message, the frequency reuse information of each basic service set around the access point, and the foregoing multiplexing policy, thereby fine-tuning its own fractional frequency.
  • the multiplexing state is provided to provide a flexible and compatible fractional frequency reuse mode.
  • the frequency reuse method provided by the embodiment of the present invention may not directly introduce the virtual BSS, but directly inform the site that the current BSS works in the Beacon or other management frame.
  • the access point needs to have a primary channel in each working frequency band, so that the station working on the frequency band can learn the information of the BSS without switching the frequency band; In the case, the station selects any of the working frequency bands it interprets as the frequency band for its communication, or all the working frequency bands supported by the current access point.
  • the station determines the working channel of the BSS (that is, the frequency reuse mode)
  • it is also unnecessary to set the virtual BSS; in this case, the extended neighbor report reported by the station needs to indicate that the work is performed in the fractional frequency reuse.
  • BSS BSSID and its corresponding at least two working frequency bands.
  • the specific implementation is similar to the description in FIG. 9 of the foregoing embodiment, and details are not described herein again.
  • the embodiment of the present invention may also be implemented by physically using at least two BSSs directly, and unifying the BSSs into one virtual BSS, for example, a current dual-band dual-band implementation method of 2.4 GHz and 5 GHz;
  • a current dual-band dual-band implementation method of 2.4 GHz and 5 GHz for example, a current dual-band dual-band implementation method of 2.4 GHz and 5 GHz;
  • the relationship between the real BSS and the virtual BSS in the embodiment of FIG. 9 can be adjusted as another implementation manner.
  • the specific steps are similar to the description in FIG. 9 of the foregoing embodiment, and details are not described herein again.
  • Legacy STA (legacy station) and a new generation of WLAN terminal NG STA (Next Generation Station) are supported by the above frequency reuse methods.
  • the access point automatically scans the working channel of each BSS around the access point or receives the working signal sent by the NG STA, thereby obtaining the working frequency band information of each BSS.
  • the access point determines its own frequency reuse mode according to the multiplexing policy and the obtained working frequency band information of each surrounding BSS, and the access point determines the number of virtual BSSs supported by the access point according to its own frequency reuse mode and The working frequency band of each virtual BSS.
  • the access point can also adjust its frequency reuse mode according to the multiplexing policy and the change of the frequency reuse information of the access points and the BSSs around the station.
  • the access point carries the relevant information of the BSS in the fractional frequency multiplexing mode in the Beacon or other management frame, and sends the information to the surrounding NG STA, where the related information includes the working frequency band of at least two virtual BSSs, and the virtual BSSID and the real BSSID.
  • the NG STA After the NG STA receives the Beacon sent by the access point, the NG STA sends the NG STA a frame indicating whether it supports the fractional frequency reuse mode. If the NG STA supports the fractional frequency reuse mode, the NG STA can know the relationship between the virtual BSSID and the real BSSID.
  • the access point may select to simultaneously send data for the station on the working frequency band of at least two virtual BSSs, or may operate the NG STA by using the management frame.
  • the NG STA can also switch according to the working frequency band corresponding to the at least two virtual BSSs and the at least two virtual BSSs and the relationship between the virtual BSSs (for example, whether they correspond to the same real BSS). Freely switch within the frequency band in which the access point operates.
  • the access point is allowed. For example, as shown in FIG. 10, the access point AP0 and the access point API supporting fractional frequency multiplexing are provided; for the access point AP0, it is possible to operate in two frequency bands CH.
  • the frequency complex in the embodiment of the present invention Another embodiment of the method includes: 1201. The station receives the first message sent by the access point.
  • the station receives the first message sent by the access point, where the first message carries the indication information that the basic service set BSS is in the fractional frequency reuse mode.
  • the first message includes a field, where the field is used to indicate that the BSS is in a fractional frequency reuse mode; and the fractional frequency reuse mode is implemented by using at least two virtual BSSs and a working frequency band corresponding to each virtual BSS.
  • the access point may add a field in the Beacon or other management frame by means of information bits to indicate how many virtual BSSs or directly correspond to at least two virtual BSSIDs and real BSSIDs. Further, the access point not only indicates the number of the virtual BSS, but also indicates the address of the virtual BSS by using a bit bit in the field.
  • the method for indicating that the BSS is in the fractional frequency multiplexing mode is not limited herein. Send in any one or at least two bands. The access point needs to further indicate the working frequency band of the virtual BSS in the Beacon or other management frame.
  • the at least two virtual BSSIDs are associated with a real BSSID.
  • the real BSSID is the MAC address of the access point, and the virtual BSSID corresponds to the respective virtual BSS. This correspondence can be expressed by the following expression:
  • BSSm (BSS m0 ,...,: BSS ), where the real BSSID of the BSS m access point, ( BSS m0 , . . . , BSS ⁇ ) is k+1 virtual BSSIDs corresponding to BSS n ⁇ .
  • the foregoing correspondence may be specifically indicated by a frame format.
  • the real BSSID may not be indicated, and only the virtual BSSID corresponding to each working frequency band may be indicated, for example: (BSS m . , ..., BSS if The real BSSID also corresponds to a certain working frequency band, and the indication manner may also be: (BSS m ., ..., BSS m , ..., BSS ⁇
  • the corresponding relationship may also pass the real BSSID and virtual
  • a certain mapping relationship of the BSSID is implemented, for example, setting the two-bit bit of the MSB to 00, indicating that the BSSID is a virtual BSSID, and setting it to 11, indicating the real BSSID.
  • the foregoing correspondence relationship and the indication method of the mapping relationship are here. No restrictions.
  • the foregoing station sends a second message to the access point.
  • the station sends a second message to the access point, where the second message carries the indication information that the station supports the frequency division multiplexing mode.
  • the site supports the fractional frequency reuse mode, which means that the site can recognize the The BSS is in a fractional frequency reuse mode, and acquires frequency band information corresponding to the BSS.
  • the second message may be an association request frame or other frame sent by the station, and the frame carries an indication information bit of the capability field, which is used to indicate whether the site supports the fractional frequency reuse mode.
  • the fractional frequency reuse mode is supported, that is, the site can know the relationship between the virtual BSSID and the real BSSID.
  • the site After the foregoing access point determines that the site supports the fractional frequency reuse mode according to the second message, the site communicates with the access point in a fractional frequency reuse mode.
  • the access point After the access point determines that the station supports the fractional frequency reuse mode according to the indication information of the station supporting the fractional frequency reuse mode carried in the second message, the access point communicates with the station in the fractional multiplexing mode.
  • the fact that the station communicates with the access point in the fractional frequency reuse mode means that the access point can select to simultaneously send data for the station on the working frequency band of at least two virtual BSSs, or the station is managed by the management frame.
  • the working frequency band is free to switch within the frequency band in which the access point operates.
  • the station can freely switch between the working frequency bands corresponding to the at least two virtual BSSs, the at least two virtual BSSs, and the relationship between the virtual BSSs (for example, whether they correspond to the same real BSS) in the frequency band in which the access point operates.
  • the access point may also select to send data for the station simultaneously on the working frequency band of at least two virtual BSSs, or the working frequency band of the station is managed by the management frame.
  • the frequency band in which the access point operates is free to switch.
  • the station after the station receives the first message sent by the access point, the station sends a second message to the access point, and when the access point determines, according to the second message, the station supports the fractional frequency.
  • the station After the multiplexing mode, the station communicates with the access point in the fractional frequency reuse mode, so that the station works in the fractional frequency reuse mode, effectively reducing the frequency interference in the Wi-Fi network.
  • the station may also obtain the frequency multiplexing mode of the access point adjusted by the access point, so as to flexibly switch the frequency band, as follows:
  • the station sends a third message to the access point, where the third message carries frequency reuse information of each basic service set around the station; the station obtains the frequency reuse mode of the access point adjusted by the access point.
  • the parameter of the frequency reuse mode of the access point is adjusted by the access point according to the frequency reuse information, the multiplexing policy, and the third message of each basic service set around the access point.
  • the third message is an extended neighbor report that the station periodically sends to the access point, and is used to report frequency reuse information of each BSS around the station to the access point; , can extend the BSSID in the report based on the existing neighbor report.
  • a one-step information supplement, such as whether the BSS is a real BSS, and whether the targeted area is a BSS edge area or a BSS center area.
  • An indication structure as shown in FIG. 11 above is an example of an extended indication, and details are not described herein again.
  • the frequency reuse information includes a working frequency band of at least two virtual BSSs and a correspondence between a virtual BSSID and a real BSSID.
  • the frequency of the access point is used in the current OBSS environment.
  • the partitioning method can maximize the throughput of its own BSS or maximize the number of users supported. Therefore, different multiplexing strategies have different multiplexing methods. Common methods include but are not limited to the following rules:
  • the overlapping region uses a scheme of orthogonal frequency allocation
  • the data transmitted by the BSS and the adjacent BSS overlapping region uses a frequency band that does not overlap with the adjacent BSS;
  • the overlapping region uses a scheme in which at least two BSSs cooperate, the BSS and the adjacent BSS overlapping region are allocated the same working frequency band as the adjacent BSS.
  • the above overlapping area refers to the overlapping area of one real BSS (and its virtual BSS) with another real BSS (and its virtual BSS).
  • the following multiplexing policies include the following:
  • the frequency bands used in the central area are determined by each access point;
  • the station sends a third message to the access point, so that the access point adjusts its own frequency reuse mode; the station acquires the parameters of the frequency reuse mode adjusted by the access point, thereby being flexible. Switch the frequency band.
  • the frequency reuse method provided by the embodiment of the present invention may not carry the virtual BSS, but carry related information in the Beacon or other management frame and send the information to the site, so that the site Obtaining at least two frequency bands of the BSS operation; at this time, the correspondence between the BSS and the at least two working frequency bands is: BSS m : (CH m0 , CH ml , ..., CH ⁇
  • the access point needs to have a primary channel in each working frequency band, so that the station working on the frequency band can learn the information of the BSS without switching the frequency band; In the case, the station selects any of the working frequency bands it interprets as the frequency band for its communication, or all the working frequency bands supported by the current access point. For the extended neighbor report sent by the station, it is required to indicate the BSSID of the BSS operating in the fractional frequency reuse and its corresponding at least two working frequency bands.
  • the specific implementation is similar to the description in FIG. 12 of the foregoing embodiment, and details are not described herein again.
  • the embodiment of the present invention may also be implemented by physically using at least two BSSs directly, and unifying the BSSs into one virtual BSS, for example, a current dual band (dual band) implementation method of 2.4 GHz and 5 GHz coexistence;
  • a current dual band (dual band) implementation method of 2.4 GHz and 5 GHz coexistence for example, a current dual band (dual band) implementation method of 2.4 GHz and 5 GHz coexistence
  • the above frequency multiplexing method can be supported.
  • the NG STA receives the Beacon or other management frame sent by the access point, and carries the related information of the BSS in the fractional frequency multiplexing mode, where the related information includes the working frequency band of at least two virtual BSSs and the virtual BSSID. Correspondence with the real BSSID.
  • the NG STA sends the NG STA a frame indicating whether it supports the fractional frequency reuse mode, and sends the frame to the access point. If the NG STA supports the fractional frequency reuse mode, the NG STA can know the relationship between the virtual BSSID and the real BSSID.
  • the NG STA may according to the relationship between the working frequency band corresponding to the at least two virtual BSSs and the at least two virtual BSSs and the virtual BSS (for example, whether the corresponding real BSS is corresponding) ) freely switch within the frequency band in which the access point operates, at which point only the access point is allowed; likewise, the access point may also choose to simultaneously transmit data for the NG STA on the working frequency band of at least two virtual BSSs. Or, through the management frame, the working frequency band of the NG STA is switched within the frequency band in which the access point operates. For example, as shown in FIG.
  • the access point AP0 and the access point API supporting fractional frequency multiplexing; and the access point AP0 can operate in two frequency bands CH. And CH ⁇ where CHo is the frequency band of the virtual BSS central region, the starting frequency point is ⁇ , the ending frequency point is f 01 ; CH! is the frequency band of the virtual BSS edge region, and the starting frequency point is f 1 () , ending The frequency point is f u ; the access point can switch the original working frequency band of the NG STA from C to CH by sending a management frame. Or from CH. Switching to C does not require re-associating the NG STA with itself.
  • the NG STA can obtain the frequency multiplexing mode of the access point adjusted by the access point, so as to flexibly switch the frequency band.

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Abstract

本发明实施例提供了一种频率复用方法及相关装置。本发明实施例方法包括：接入点向站点发送第一消息，所述第一消息中携带基本服务集处于分数频率复用模式的指示信息；所述接入点接收所述站点发送的第二消息，所述第二消息中携带所述站点支持分数频率复用模式的指示信息；所述接入点根据所述第二消息确定所述站点支持分数频率复用模式后，所述接入点与所述站点在分数频率复用模式下进行通信。本发明实施例能够有效的减少Wi-Fi网络中的频率干扰。

Description

一种频率复用方法及相关装置 技术领域
本发明涉及无线通信领域， 特别涉及一种频率复用方法及相关装置。
背景技术
无线通信网络中一个最重要的影响因子是干扰。由于网络中各相邻小区的 相互干扰， 导致整个网络的容量受限。 随着无线通信的发展， 各种各样的干扰 处理方法都被发明出来，以应对不同场景的干扰问题。干扰处理的方法有很多， 比如： 干扰规避、 干扰对齐、 协作传输、 协作波束成形等等。 其中， 干扰规避 是最简单最容易实现的一种方法。
最初的一种干扰规避方法是频率复用，即通过相邻小区之间釆用不重叠的 频段， 利用四色原理并通过网络规划， 令来自其他小区的同频干扰最小化。 但 这种方式对频率资源的利用率不高。
分数频率复用则是频率复用的一种简单改进方法， 简单说， 就是将一个小 区分为中心区域和边缘区域（甚至又进一步分为边缘区域和交叠区域）， 中心 区域和边缘区域的频段是不同的。常用的手段是在每个小区的中心区域使用相 同的频段并降低中心区域的功率；同时在边缘区域则使用与其他小区不重叠的 频段， 实现干扰规避的效果。 此外， 如果相邻的小区可以协作， 那么相邻区域 的频段也可以相同， 以利于基站釆用高级信号处理技术， 为边缘区域的用户提 供更大容量的服务。
当前的 Wi-Fi ( Wireless Fidelity, 无线保真）网络中， 釆用 CSMA/CA ( C arrier Sense Multiple Access with Collision Avoidance , 载波侦听多路访问 / 碰撞避免）协议避免数据之间在传送时造成冲突， 以规避一定的干扰。
但是， 在密集部署的情况下， 使用相同无线电频率传输和接收 Wi-Fi信号 时， 同频干扰现象仍然十分严重。
发明内容
本发明实施例提供了一种频率复用方法及相关装置，用于减少 Wi-Fi网络 中的频率干扰。
本发明实施例的第一方面提供了一种接入点设备， 包括： 第一发送单元， 用于向站点发送第一消息， 所述第一消息中携带基本服务 集处于分数频率复用模式的指示信息；
第一接收单元， 用于接收所述站点发送的第二消息， 所述第二消息中携带 所述站点支持分数频率复用模式的指示信息；
执行单元，用于根据所述接收单元接收到的第二消息确定所述站点支持分 数频率复用模式后， 与所述站点在分数频率复用模式下进行通信。
结合本发明实施例的第一方面，本发明实施例的第一方面的第一种实现方 式中， 所述接入点设备还包括：
扫描单元， 用于扫描信道， 以获取接入点周边各基本服务集的频率复用信 息；
确定单元，用于根据复用策略以及所述扫描单元获取到的所述接入点周边 各基本服务集的频率复用信息，确定所述接入点的频率复用方式； 所述复用策 略为在基本服务集的交叠区域内，所述接入点釆取最大化基本服务集吞吐量或 最大化支持用户个数的频率划分方式。
结合本发明实施例的第一方面的第一种实现方式，本发明实施例的第一方 面的第二种实现方式中，
所述确定单元具体用于， 当交叠区域釆用正交频率分配的方案时， 为所述 接入点和所述接入点周边各基本服务集的交叠区域分配与所述接入点周边各 基本服务集不重叠的频段；
或，
所述确定单元具体用于，当交叠区域釆用至少两个基本服务集之间协作的 方案时，为所述接入点和所述接入点周边各基本服务集的交叠区域分配与所述 接入点周边各基本服务集相同的工作频段。
结合本发明实施例的第一方面的第一种实现方式，在本发明实施例的第一 方面的第三种实现方式中， 所述接入点设备还包括：
第二接收单元， 用于接收所述站点发送的第三消息， 所述第三消息中携带 所述站点周边各基本服务集的频率复用信息；
调整单元， 用于根据所述复用策略、所述接入点周边各基本服务集的频率 复用信息以及所述第三消息调整所述接入点的频率复用方式； 第二发送单元，用于将所述调整单元调整后的接入点的频率复用方式的参 数发送给所述站点。
结合本发明实施例的第一方面、或第一方面的第一种实现方式、或第一方 面的第二种实现方式、或第一方面的第三种实现方式， 本发明实施例的第一方 面的第四种实现方式中， 所述基本服务集包括至少两个虚拟基本服务集，每个 虚拟基本服务集对应一个虚拟基本服务集标识符，所述虚拟基本服务集与所述 接入点的工作频段对应；所述虚拟基本服务集标识符与真实基本服务集标识符 相关联，所述真实基本服务集标识符为所述接入点的媒体访问控制 MAC地址。
本发明实施例的第二方面提供了一种站点设备， 包括：
接收模块， 用于接收接入点发送的第一消息， 所述第一消息中携带基本服 务集处于分数频率复用模式的指示信息；
第一发送模块， 用于向所述接入点发送第二消息， 所述第二消息中携带站 点支持分数频率复用模式的指示信息；
执行模块，用于在所述接入点根据所述第一发送模块发送的第二消息确定 所述站点支持分数频率复用模式后，与所述接入点在分数频率复用模式下进行 通信。
结合本发明实施例的第二方面，本发明实施例的第二方面的第一种实现方 式中， 所述站点设备还包括：
第二发送模块， 用于向所述接入点发送第三消息， 所述第三消息中携带所 述站点周边各基本服务集的频率复用信息；
获取模块， 用于获取所述接入点调整后的接入点的频率复用方式的参数； 所述接入点的频率复用方式的参数由所述接入点根据扫描到的所述接入点周 边各基本服务集的频率复用信息、复用策略以及所述第三消息调整； 所述复用 策略为在基本服务集的交叠区域内，所述接入点釆取最大化基本服务集吞吐量 或最大化支持用户个数的频率划分方式。
结合本发明实施例的第二方面、或第二方面的第一种实现方式， 本发明实 施例的第二方面的第二种实现方式中，所述基本服务集包括至少两个虚拟基本 服务集，每个虚拟基本服务集对应一个虚拟基本服务集标识符， 所述虚拟基本 服务集与所述接入点的工作频段对应；所述虚拟基本服务集标识符与真实基本 服务集标识符相关联，所述真实基本服务集标识符为所述接入点的媒体访问控 制 MAC地址。
本发明实施例的第三方面提供了一种频率复用方法， 包括：
接入点向站点发送第一消息，所述第一消息中携带基本服务集处于分数频 率复用模式的指示信息；
所述接入点接收所述站点发送的第二消息，所述第二消息中携带所述站点 支持分数频率复用模式的指示信息；
所述接入点根据所述第二消息确定所述站点支持分数频率复用模式后，所 述接入点与所述站点在分数频率复用模式下进行通信。
结合本发明实施例的第三方面，本发明实施例的第三方面的第一种实现方 式中， 所述接入点向站点发送第一消息之前包括：
所述接入点扫描信道，以获取所述接入点周边各基本服务集的频率复用信 息；
所述接入点根据复用策略以及获取到的所述接入点周边各基本服务集的 频率复用信息，确定自身的频率复用方式； 所述复用策略为在基本服务集的交 叠区域内，所述接入点釆取最大化基本服务集吞吐量或最大化支持用户个数的 频率划分方式。
结合本发明实施例的第三方面的第一种实现方式，本发明实施例的第三方 面的第二种实现方式中， 所述确定自身的频率复用方式包括：
当交叠区域釆用正交频率分配的方案时，为所述接入点和所述接入点周边 各基本服务集的交叠区域分配与所述接入点周边各基本服务集不重叠的频段； 或，
当交叠区域釆用至少两个基本服务集之间协作的方案时，为所述接入点和 所述接入点周边各基本服务集的交叠区域分配与所述接入点周边各基本服务 集相同的工作频段。
结合本发明实施例的第三方面的第一种实现方式，本发明实施例的第三方 面的第三种实现方式中， 所述方法还包括：
所述接入点接收所述站点发送的第三消息，所述第三消息中携带所述站点 周边各基本服务集的频率复用信息； 所述接入点根据所述复用策略、所述接入点周边各基本服务集的频率复用 信息以及所述第三消息调整自身的频率复用方式；
所述接入点将调整后的自身的频率复用方式的参数发送给所述站点。
结合本发明实施例的第三方面、或第三方面的第一种实现方式、或第三方 面的第二种实现方式、或第三方面的第三种实现方式， 本发明实施例的第三方 面的第四种实现方式中， 所述基本服务集包括至少两个虚拟基本服务集，每个 虚拟基本服务集对应一个虚拟基本服务集标识符，所述虚拟基本服务集与所述 接入点的工作频段对应；所述虚拟基本服务集标识符与真实基本服务集标识符 相关联，所述真实基本服务集标识符为所述接入点的媒体访问控制 MAC地址。
本发明实施例的第四方面提供了一种频率复用方法， 包括：
站点接收接入点发送的第一消息，所述第一消息中携带基本服务集处于分 数频率复用模式的指示信息；
所述站点向所述接入点发送第二消息，所述第二消息中携带所述站点支持 分数频率复用模式的指示信息；
在所述接入点根据所述第二消息确定所述站点支持分数频率复用模式后， 所述站点与所述接入点在分数频率复用模式下进行通信。
结合本发明实施例的第四方面，本发明实施例的第四方面的第一种实现方 式中， 所述方法还包括：
所述站点向所述接入点发送第三消息，所述第三消息中携带所述站点周边 各基本服务集的频率复用信息；
所述站点获取所述接入点调整后的所述接入点的频率复用方式的参数；所 述接入点的频率复用方式的参数由所述接入点根据扫描到的所述接入点周边 各基本服务集的频率复用信息、复用策略以及所述第三消息调整； 所述复用策 略为在基本服务集的交叠区域内，所述接入点釆取最大化基本服务集吞吐量或 最大化支持用户个数的频率划分方式。
结合本发明实施例的第四方面、或第四方面的第一种实现方式， 本发明实 施例的第四方面的第二种实现方式中，所述基本服务集包括至少两个虚拟基本 服务集，每个虚拟基本服务集对应一个虚拟基本服务集标识符， 所述虚拟基本 服务集与所述接入点的工作频段对应；所述虚拟基本服务集标识符与真实基本 服务集标识符相关联，所述真实基本服务集标识符为所述接入点的媒体访问控 制 MAC地址。
从以上技术方案可以看出， 本发明实施例具有以下优点：
本发明实施例中， 接入点根据第二消息确定站点支持分数频率复用模式 后， 所述接入点与所述站点在分数频率复用模式下进行通信，从而使得所述站 点在分数频率复用模式下工作， 有效的减少了 Wi-Fi网络中的频率干扰。
附图说明
图 1为本发明实施例中接入点设备一个实施例结构示意图；
图 2为本发明实施例中接入点设备另一实施例结构示意图；
图 3为本发明实施例中接入点设备另一实施例结构示意图；
图 4为本发明实施例中接入点设备另一实施例结构示意图；
图 5为本发明实施例中站点设备一个实施例结构示意图；
图 6为本发明实施例中站点设备另一实施例结构示意图；
图 7为本发明实施例中站点设备另一实施例结构示意图；
图 8为本发明实施例中频率复用方法一个实施例流程示意图；
图 9为本发明实施例中频率复用方法另一实施例流程示意图；
图 10为本发明实施例中两个相邻接入点的工作频段分布示意图； 图 11为本发明实施例中一种扩展邻居报告的扩展指示结构示意图； 图 12为本发明实施例中频率复用方法另一实施例流程示意图。
具体实施方式
为使得本发明的发明目的、 特征、 优点能够更加的明显和易懂， 下面将结 合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、 完整地描 述， 显然， 下面所描述的实施例仅仅是本发明一部分实施例， 而非全部的实施 例。基于本发明中的实施例， 本领域普通技术人员在没有做出创造性劳动前提 下所获得的所有其他实施例， 都属于本发明保护的范围。
请参阅图 1， 本发明实施例中接入点设备一个实施例包括：
第一发送单元 101， 用于向站点发送第一消息， 该第一消息中携带基本服 务集（ Basic Service Set, BSS )处于分数频率复用模式的指示信息；
第一接收单元 102， 用于接收该站点发送的第二消息， 该第二消息中携带 该站点支持分数频率复用模式的指示信息；
执行单元 103， 用于根据上述第一接收单元 102接收到的第二消息确定该 站点支持分数频率复用模式后， 与该站点在分数频率复用模式下进行通信。
需要说明的是， 上述 BSS包括至少两个虚拟 BSS， 每个虚拟 BSS对应一 个虚拟 BSSID ( Basic Service Set Identifier, 基本服务集标识符）， 该虚拟 BSS 与接入点的工作频段对应；该虚拟 BSSID与真实 BSSID相关联，该真实 BSSID 为该接入点的 MAC ( Media Access Control Address , 媒体访问控制）地址。
上述第一消息中包含字段， 该字段用于指示 BSS处于分数频率复用模式； 该分数频率复用模式通过至少两个虚拟 BSS以及各虚拟 BSS所对应的工作频 段来实现。 该第一消息可以为一个信息位的 Beacon (信标）帧或其他管理帧。
该站点支持分数频率复用模式即表示该站点可以辨识该 BSS处于分数频 率复用模式， 并获取该 BSS所对应的频段信息。
本发明实施例中， 第一发送单元 101向站点发送第一消息， 其中， 该第一 消息中携带 BSS处于分数频率复用模式的指示信息； 第一接收单元 102接收 该站点发送的第二消息， 其中， 该第二消息中携带该站点支持分数频率复用模 式的指示信息；在根据上述第一接收单元 102接收到的第二消息确定该站点支 持分数频率复用模式后，执行单元 103执行与该站点在分数频率复用模式下进 行通信的步骤。 从而使得该站点在分数频率复用模式下工作， 有效的减少了 Wi-Fi网络中的频率干扰。
上面的实施例中，接入点设备可以根据复用策略以及接入点周边各基本服 务集的频率复用信息来初始化接入点的频率复用方式， 可选的， 如图 2所示， 上述接入点设备还包括：
扫描单元 201， 用于扫描信道， 以获取接入点周边各基本良务集的频率复 用信息；
确定单元 202， 用于根据复用策略以及上述扫描单元 201获取到的该接入 点周边各基本服务集的频率复用信息，确定该接入点的频率复用方式； 该复用 策略为在基本服务集的交叠区域内，该接入点釆取最大化基本服务集吞吐量或 最大化支持用户个数的频率划分方式。
需要说明的是， 扫描单元 201 扫描工作信道， 以获取接入点周边各 BSS 的频率复用信息。 可以理解的是， 获取该接入点周边各 BSS 的频率复用信息 的方式有多种， 例如可以通过检测周边各 BSS 的接入点或站点发送的信号获 得， 其中该信号中携带相关信息域，对于以上的获取方式或指示方式此处不作 限定。
上述频率复用信息中包含至少两个虚拟 BSS的工作频段以及虚拟 BSSID 与真实 BSSID的对应关系； 对于上述复用策略， 是指该接入点为了在当前的 OBSS ( Overlapping Basic Service Set, 基本服务集交叠区域）环境下， 釆取哪 种频率划分方法能够最大化自身 BSS的吞吐量或者是最大化支持的用户个数。 因此， 不同的复用策略有不同的复用方法， 常见的方法包括但不限于以下规 则：
如果交叠区域釆用正交频率分配的方案， 则为本 BSS与相邻 BSS交叠区域 传输的数据使用与该相邻 BSS不重叠的频段；
或者，
如果交叠区域釆用至少两个 BSS之间协作的方案， 则为本 BSS与相邻 BSS 交叠区域分配与该相邻 BSS相同的工作频段。
上述交叠区域是指一个真实 BSS (及其虚拟 BSS ) 与另一个真实 BSS (及 其虚拟 BSS ) 的交叠区域。
在上述两种常见方法中任意一种的基础之上，对于该复用策略还包括以下 内容：
在中心区域所使用的频段由各接入点自行决定；
在每个虚拟 BSS的工作频段， 具有至少一个主信道。
结合上述频率复用信息以及复用策略的具体内容， 就能够令一个处于 OBSS环境下的接入点有效的初始化自身的频率复用方式， 从而可以决定虚拟 BSS的个数以及各虚拟 BSS的工作频段。
本发明实施例中，确定单元 202根据复用策略以及扫描单元 201获取到的 接入点周边各 BSS 的频率复用信息初始化接入点的频率复用方式， 从而确定 虚拟 BSS的个数以及各虚拟 BSS的工作频段， 以提供灵活兼容的分数频率复 用模式。
基于上述实施例中的接入点设备，本发明实施例还可以对接入点的频率复 用方式进行调整， 可选的， 如图 3所示， 上述接入点设备还包括： 第二接收单元 301， 用于接收该站点发送的第三消息， 该第三消息中携带 该站点周边各基本服务集的频率复用信息；
调整单元 302， 用于根据上述复用策略、 该接入点周边各基本服务集的频 率复用信息以及上述第三消息调整该接入点的频率复用方式；
第二发送单元 303， 用于将上述调整单元调整后的接入点的频率复用方式的 参数发送给该站点。
需要说明的是，上述第三消息是该站点定期向该接入点发送的扩展邻居报 告， 用于向该接入点汇报该站点周边各 BSS 的频率复用信息； 对于该频率复 用信息以及上述复用策略已在上述实施例图 2中做出了说明， 此处不再赘述。 对于调整单元 302 调整后的接入点的频率复用方式的具体参数则是根据复用 策略以及接入点和站点周边各 BSS 的频率复用信息的变化情况确定， 具体可 参见如下方案：
如果交叠区域釆用正交频率分配的方案， 则为本 BSS与相邻 BSS交叠区域 传输的数据使用与该相邻 BSS不重叠的频段；
或者，
如果交叠区域釆用至少两个 BSS之间协作的方案， 则为本 BSS与相邻 BSS 交叠区域分配与该相邻 BSS相同的工作频段。
上述交叠区域是指一个真实 BSS (及其虚拟 BSS ) 与另一个真实 BSS (及 其虚拟 BSS ) 的交叠区域。
在上述两种方案中任意一种的基础之上， 还包括以下内容：
在中心区域所使用的频段由各接入点自行决定；
在每个虚拟 BSS的工作频段， 具有至少一个主信道。
结合上述内容， 即可有效的调整该接入点的频率复用方式，从而调整虚拟 BSS的个数以及各虚拟 BSS的工作频段。
本发明实施例中，调整单元 302根据第二接收单元 301接收到的第三消息、 该接入点周边各基本服务集的频率复用信息以及上述复用策略调整该接入点 的频率复用方式，从而微调该接入点的分数频率复用状态， 以提供灵活兼容的 分数频率复用模式。 图 1至图 3所示的实施例从功能单元的角度对接入点设备的具体结构进行 了说明，以下结合图 4所示的实施例从硬件角度对接入点设备的具体结构进行 说明：
如图 4所示， 该接入点设备包括： 发射器 401、 接收器 402、 处理器 403 和存储器 404。
本发明实施例涉及的接入点设备可以具有比图 4所示出的更多或更少的部 件， 可以组合两个或更多个部件， 或者可以具有不同的部件配置或设置， 各个 部件可以在包括一个或多个信号处理和 /或专用集成电路在内的硬件、 软件或 硬件和软件的组合实现。
上述发射器 401用于执行如下操作：
向站点发送第一消息，该第一消息中携带基本服务集处于分数频率复用模 式的指示信息；
上述接收器 402用于执行如下操作：
接收该站点发送的第二消息，该第二消息中携带该站点支持分数频率复用 模式的指示信息；
上述处理器 403用于执行如下操作：
根据接收到的第二消息确定该站点支持分数频率复用模式后，与该站点在 分数频率复用模式下进行通信；
上述发射器 401发送的第一消息中包含字段， 该字段用于指示上述基本服 务集处于分数频率复用模式；
上述发射器 401还用于执行如下操作：
将调整后的接入点的频率复用方式的参数发送给该站点；
上述接收器 402还用于执行如下操作：
扫描信道， 以获取接入点周边各基本服务集的频率复用信息；
接收上述站点发送的第三消息，该第三消息中携带该站点周边各基本服务 集的频率复用信息；
上述处理器 403还用于执行如下操作：
根据复用策略以及获取到的该接入点周边各基本服务集的频率复用信息，确定 该接入点的频率复用方式； 该复用策略为在基本服务集的交叠区域内， 该接入 点釆取最大化基本服务集吞吐量或最大化支持用户个数的频率划分方式； 根据该复用策略、该接入点周边各基本服务集的频率复用信息以及上述第 三消息调整该接入点的频率复用方式。
本实施例中， 处理器 403能够有效的初始化接入点的频率复用方式， 并根 据周边各 BSS的频率复用信息的变化情况调整该接入点的频率复用方式， 使得 该接入点与该站点在灵活兼容的分数频率复用模式下通信， 有效的减少了 Wi-Fi网络中的频率干扰。
上面的实施例从接入点侧的角度对接入点与站点在分数频率复用模式下 进行通信作了描述， 下面将从站点侧进行描述， 请参阅图 5， 本发明实施例中 站点设备的一个实施例包括：
接收模块 501， 用于接收接入点发送的第一消息， 该第一消息中携带基本 服务集处于分数频率复用模式的指示信息；
第一发送模块 502， 用于向该接入点发送第二消息， 该第二消息中携带站 点支持分数频率复用模式的指示信息；
执行模块 503， 用于在上述接入点根据上述第一发送模块 502发送的第二 消息确定站点支持分数频率复用模式后，与该接入点在分数频率复用模式下进 行通信。
需要说明的是， 上述 BSS包括至少两个虚拟 BSS， 每个虚拟 BSS对应一 个虚拟 BSSID， 该虚拟 BSS与接入点的工作频段对应； 该虚拟 BSSID与真实 BSSID相关联， 该真实 BSSID为该接入点的 MAC地址。
上述第一消息中包含字段， 该字段用于指示 BSS处于分数频率复用模式； 该分数频率复用模式通过至少两个虚拟 BSS以及各虚拟 BSS所对应的工作频 段来实现。 该第一消息可以为一个信息位的 Beacon帧或其他管理帧。
该站点支持分数频率复用模式即表示该站点可以辨识该 BSS处于分数频 率复用模式， 并获取该 BSS所对应的频段信息。
其中，与该接入点在分数频率复用模式下进行通信即表示该接入点可以选 择在至少两个虚拟 BSS 的工作频段上同时为该站点发送数据， 或通过管理帧 将该站点的工作频段在接入点所工作的频段内自由切换。
本发明实施例中， 接收模块 501接收接入点发送的第一消息， 其中， 该第 一消息中携带基本服务集处于分数频率复用模式的指示信息； 第一发送模块 502向该接入点发送第二消息， 其中， 该第二消息中携带站点支持分数频率复 用模式的指示信息；在该接入点根据该第一发送模块 502发送的第二消息确定 站点支持分数频率复用模式后，执行模块 503执行与该接入点在分数频率复用 模式下进行通信的步骤。从而使得站点在分数频率复用模式下工作，有效的减 少了 Wi-Fi网络中的频率干扰。
上面的实施例中，站点设备可以向接入点发送相关信息使该接入点对自身 的频率复用方式进行调整， 可选的， 如图 6所示， 上述站点设备还包括： 第二发送模块 601， 用于向该接入点发送第三消息， 该第三消息中携带该 站点周边各基本服务集的频率复用信息；
获取模块 602， 用于获取上述接入点调整后的接入点的频率复用方式的参 数；该接入点的频率复用方式的参数由该接入点根据扫描到的该接入点周边各 基本服务集的频率复用信息、复用策略以及上述第三消息调整； 该复用策略为 在基本服务集的交叠区域内，该接入点釆取最大化基本服务集吞吐量或最大化 支持用户个数的频率划分方式。
需要说明的是，上述第三消息是该站点定期向该接入点发送的扩展邻居报 告， 用于向该接入点汇报该站点周边各 BSS 的频率复用信息； 该频率复用信 息中包含至少两个虚拟 BSS的工作频段以及虚拟 BSSID与真实 BSSID的对应 关系；上述调整后的接入点的频率复用方式的具体参数则是根据复用策略以及 接入点和站点周边各 BSS的频率复用信息的变化情况确定。
对于上述复用策略，是指该接入点为了在当前的 OBSS环境下， 釆取哪种 频率划分方法能够最大化自身 BSS 的吞吐量或者是最大化支持的用户个数。 因此， 不同的复用策略有不同的复用方法， 常见的方法包括但不限于以下规 则：
如果交叠区域釆用正交频率分配的方案， 则为本 BSS与相邻 BSS交叠区域 传输的数据使用与该相邻 BSS不重叠的频段；
或者，
如果交叠区域釆用至少两个 BSS之间协作的方案， 则为本 BSS与相邻 BSS 交叠区域分配与该相邻 BSS相同的工作频段。 上述交叠区域是指一个真实 BSS (及其虚拟 BSS ) 与另一个真实 BSS (及 其虚拟 BSS ) 的交叠区域。
在上述两种常见方法中任意一种的基础之上，对于该复用策略还包括以下 内容：
在中心区域所使用的频段由各接入点自行决定；
在每个虚拟 BSS的工作频段， 具有至少一个主信道。
本发明实施例中， 第二发送模块 601向接入点发送第三消息， 使得该接入 点根据扫描到的该接入点周边各基本服务集的频率复用信息、复用策略以及该 第三消息中携带的站点周边各 BSS的频率复用信息调整该接入点的频率复用 方式， 以提供灵活兼容的分数频率复用模式。
图 5至图 6所示的实施例从功能模块的角度对站点设备的具体结构进行了 说明， 以下结合图 7 所示的实施例从硬件角度对站点设备的具体结构进行说 明：
如图 7所示， 该站点设备包括： 接收器 701、 发射器 702、 处理器 703和 存储器 704。
本发明实施例涉及的站点设备可以具有比图 7所示出的更多或更少的部 件， 可以组合两个或更多个部件， 或者可以具有不同的部件配置或设置， 各个 部件可以在包括一个或多个信号处理和 /或专用集成电路在内的硬件、 软件或 硬件和软件的组合实现。
上述接收器 701用于执行如下操作：
接收接入点发送的第一消息，该第一消息中携带基本服务集处于分数频率 复用模式的指示信息；
上述发射器 702用于执行如下操作：
向该接入点发送第二消息，该第二消息中携带站点支持分数频率复用模式 的指示信息；
上述处理器 703用于执行如下操作：
在上述接入点根据所述第二消息确定站点支持分数频率复用模式后，与该 接入点在分数频率复用模式下进行通信；
上述发射器 702还用于执行如下操作： 向上述接入点发送第三消息，该第三消息中携带该站点周边各基本服务集 的频率复用信息；
上述接收器 701还用于执行如下操作：
获取上述接入点调整后的接入点的频率复用方式的参数；该接入点的频率 复用方式的参数由该接入点根据扫描到的该接入点周边各基本服务集的频率 复用信息、复用策略以及上述第三消息调整； 该复用策略为在基本服务集的交 叠区域内，该接入点釆取最大化基本服务集吞吐量或最大化支持用户个数的频 率划分方式。
本实施例中，处理器 703在接入点根据第二消息确定站点支持分数频率复 用模式后， 与接入点在灵活兼容的分数频率复用模式下工作， 有效的减少了 Wi-Fi网络中的频率干扰。
为便于更好的实施本发明实施例的上述相关装置，下面还提供用于配合上 述装置的相关方法。
请参阅图 8， 本发明实施例中频率复用方法的一个实施例包括：
801、 接入点向站点发送第一消息；
接入点向站点发送第一消息， 该第一消息中携带 BSS处于分数频率复用 模式的指示信息。
802、 上述接入点接收上述站点发送的第二消息；
该站点接收到该接入点发送的第一消息后，该站点向该接入点发送第二消 息， 其中， 该第二消息中携带该站点支持分数频率复用模式的指示信息。 该站 点支持分数频率复用模式即表示该站点可以辨识该 BSS处于分数频率复用模 式， 并获取该 BSS所对应的频段信息。
803、 上述接入点根据上述第二消息确定上述站点支持分数频率复用模式 后， 该接入点与该站点在分数频率复用模式下进行通信。
该接入点根据第二消息中携带的该站点支持分数频率复用模式的指示信 息确定该站点支持分数频率复用模式后，该接入点与该站点在分数复用模式下 进行通信。其中，该接入点与该站点在分数频率复用模式下进行通信即表示该 接入点可以选择在至少两个虚拟 BSS 的工作频段上同时为该站点发送数据， 或通过管理帧将该站点的工作频段在接入点所工作的频段内自由切换。 本发明实施例中，当接入点根据第二消息确定站点支持分数频率复用模式 后， 该接入点与该站点在分数频率复用模式下进行通信，从而使得该站点在分 数频率复用模式下工作， 有效的减少了 Wi-Fi网络中的频率干扰。
上面实施例中的频率复用方法还可以根据复用策略以及接入点周边各基 本服务集的频率复用信息来初始化接入点的频率复用方式， 请参阅图 9， 本发 明实施例中频率复用方法另一实施例包括：
901、 接入点扫描信道， 以获取该接入点周边各基本服务集的频率复用信 息；
接入点扫描工作信道， 获取该接入点周边各基本服务集 BSS 的频率复用 信息。 可以理解的是， 该接入点获取周边各 BSS 的频率复用信息的方式有多 种， 例如可以通过检测周边各 BSS 的接入点或站点发送的信号获得， 其中该 信号中携带相关信息域， 对于以上具体的获取方式或指示方式此处不作限定。
需要说明的是， 对于获取周边各 BSS的频率复用信息具体可以从周边各 BSS的频率复用的对应关系中获知； 例如有如下频率复用的对应关系： BSSm: [(BSSm。， CHm。)， (BSSml , CHml)， …， (BSS^, CH^)] . 以 k=2为例， 可以有 如下分配， CHm()是中心区域的频段， CHml是边缘区域的频段， 0^2是交叠区 域的频段。 对于该频率复用的对应关系， BSS„^々站点或者接入点发送的管理 帧或者数据帧中可以只携带虚拟 BSSID而没有真实的 BSSID (即上述 BSSm )， 站点只需获知各虚拟 BSS以及与该虚拟 BSS对应的工作频段即可； 其中， 上述 管理帧或者数据帧中具有一个信息指示位， 该信息位中携带 BSS的频率复用的 对应关系。
进一步的， BSSm的站点或者接入点发送的管理帧或者数据帧中可以标识 虚拟 BSSID指代的是虚拟 BSS还是真实 BSS; 如果是虚拟 BSS， 还可以进一步 标识当前的 BSSID指代的是中心 BSS、 边缘 BSS还是交叠区域的 BSS。
902、 上述接入点根据复用策略以及获取到的上述接入点周边各基本服务 集的频率复用信息， 确定自身的频率复用方式；
该接入点根据复用策略以及步骤 901 获取到的该接入点周边各基本服务 集的频率复用信息， 确定自身的频率复用方式。
对于该接入点， 可以设定为具有两个或者两个以上虚拟 BSS 的支持分数 频率复用模式的接入点， 其中， 每个虚拟 BSS分别对应一个虚拟 BSSID。 该 虚拟 BSS与该接入点所工作的分数频率复用的频段所对应。 例如， 如图 10所 示， 支持分数频率复用的接入点 AP0与接入点 API ; 对于接入点 AP0， 可以 工作在两个频段 CHo和 CH^ 其中 C 是该虚拟 BSS中心区域的频段， 起始 频点为 f。。， 结束频点为 是该虚拟 BSS边缘区域的频段， 起始频点为 f10,结束频点为 fu;本发明实施例不局限在两个频段，也可以是 k个频段（k=0. 1， 2， 3， ...， k )， 对于频段的数量不作限制。 需要说明的是， 上述复用策略， 是指该接入点为了在当前的 OBSS环境下，釆取哪种频率划分方法能够最大化 自身 BSS 的吞吐量或者是最大化支持的用户个数。 因此， 不同的复用策略有 不同的复用方法， 常见的方法包括但不限于以下规则：
如果交叠区域釆用正交频率分配的方案， 则为本 BSS与相邻 BSS交叠区域 传输的数据使用与该相邻 BSS不重叠的频段；
或者，
如果交叠区域釆用至少两个 BSS之间协作的方案， 则为本 BSS与相邻 BSS 交叠区域分配与该相邻 BSS相同的工作频段。
上述交叠区域是指一个真实 BSS (及其虚拟 BSS ) 与另一个真实 BSS (及 其虚拟 BSS ) 的交叠区域。
在上述两种常见方法中任意一种的基础之上，对于该复用策略还包括以下 内容：
在中心区域所使用的频段由各接入点自行决定；
在每个虚拟 BSS的工作频段， 具有至少一个主信道。
结合上述频率复用信息以及复用策略的具体内容， 就能够令一个处于 OBSS环境下的接入点有效的初始化自身的频率复用方式， 从而可以决定虚拟 BSS的个数以及各虚拟 BSS的工作频段。
903、 上述接入点向上述站点发送第一消息；
需要说明的是， 该第一消息中包含字段， 该字段用于指示该 BSS处于分 数频率复用模式；该分数频率复用模式通过至少两个虚拟 BSS以及各虚拟 BSS 所对应的工作频段来实现。对于指示方法而言， 该接入点可以通过信息位的方 式在 Beacon或者其他管理帧中增加一个字段， 用于指示有多少个虚拟 BSS或 直接体现至少两个虚拟 BSSID与真实 BSSID的对应关系。
进一步的， 该接入点不仅指示上述虚拟 BSS 的个数， 还可以利用字段中 的比特 bit指示虚拟 BSS的地址。对于上述指示该 BSS处于分数频率复用模式 的方法在此不作限制。 的任意一个或者至少两个频段内发送。 接入点需要在 Beacon或者其他管理帧 中进一步指示本虚拟 BSS的工作频段。
进一步的， 该至少两个虚拟 BSSID是与真实 BSSID相关联的。 该真实的 BSSID就是接入点的 MAC地址， 而虚拟 BSSID则与各自的虚拟 BSS——对 应。 这种对应关系可以用下面的表达式体现：
BSSm(BSSm0,…，： BSS ), 其中， BSSm 接入点的真实 BSSID, ( BSSm0，…， BSS^ ) 则是 BSS„^ 对应的 k+1个虚拟 BSSID。
上述对应关系可以通过帧格式的方式具体指示，在实际的指示中可以不需 要指示真实 BSSID， 仅指示与各工作频段对应的虚拟 BSSID即可， 如： (BSSm。， ...， BSS 如果真实 BSSID也对应了某工作频段， 则指示的方式也 可以是： （BSSm。， ...， BSSm, ...， BSS 除了上述指示方法， 该对应关系 还可以通过真实 BSSID和虚拟 BSSID的某种映射关系来实现， 例如将 MSB ( Most Significant Bit, 最高位） 的两位 bit设置成 00， 表示该 BSSID为虚拟 BSSID; 设置成 11， 表示为真实 BSSID。 对上述对应关系以及该映射关系的指 示方法， 在此不作限制。
904、 上述接入点接收上述站点发送的第二消息；
该站点向该接入点发送第二消息， 其中， 该第二消息中携带该站点支持分 数频率复用模式的指示信息。该站点支持分数频率复用模式即表示该站点可以 辨识该 BSS处于分数频率复用模式， 并获取该 BSS所对应的频段信息。 该第 二消息可以是由该站点发送的关联请求帧或其他帧，该帧携带一个能力域的指 示信息位， 用于指示该站点是否支持分数频率复用模式。 另外， 支持分数频率 复用模式， 即是该站点能获知虚拟 BSSID与真实 BSSID的关系。
905、 上述接入点根据上述第二消息确定上述站点支持分数频率复用模式 后， 与该站点在分数频率复用模式下进行通信。 该接入点根据第二消息中携带的指示信息位确定该站点支持分数频率复 用模式后， 可以选择在至少两个虚拟 BSS 的工作频段上同时为该站点发送数 据， 也可以通过管理帧将该站点的工作频段在接入点所工作的频段内自由切 换； 同样的， 该站点也可以根据上述至少两个虚拟 BSS、 至少两个虚拟 BSS 分别对应的工作频段以及虚拟 BSS 之间的关系 （例如是否对应同一个真实 BSS )在接入点所工作的频段内自由切换， 此时只需接入点允许即可。
本发明实施例中，接入点根据复用策略以及获取到的该接入点周边各 BSS 的频率复用信息初始化该接入点的频率复用方式， 从而确定虚拟 BSS 的个数 以及各虚拟 BSS的工作频段， 以提供灵活兼容的分数频率复用模式。
上述实施例中的频率复用方法还可以对接入点的频率复用方式进行调整， 具体如下：
在上述步骤 902之后， 该接入点接收该站点发送的第三消息， 该第三消息 中携带该站点周边各基本服务集的频率复用信息； 该接入点根据上述复用策 略、该接入点周边各基本服务集的频率复用信息以及该第三消息调整自身的频 率复用方式， 并将调整后的自身的频率复用方式的参数发送给该站点。
需要说明的是，上述第三消息是该站点定期向该接入点发送的扩展邻居报 告， 用于向该接入点汇报该站点周边各 BSS 的频率复用信息； 对于站点发送 的扩展邻居报告， 可以在现有的邻居报告基础上， 扩展汇报中对 BSSID的进 一步信息补充， 例如 BSS是否为真实的 BSS， 以及所针对的区域是 BSS边缘 区域还是 BSS中心区域。 如图 11所示的一种指示结构， 即为一种扩展指示的 例子。
对于图 11所示的一种支持 BSS更多信息的扩展邻居报告的指示结构， 该 图中的 Element表示单元标识符， Length表示长度， BSSID表示基本服务集标 识符， BSSID Information表示基本服务集信息位， Operating Class表示操作类 另1 J， Channel Number 表示信道号， PHY Type 表示物理层类型， Optional Subelements表示可选子单元， variable表示可变 分， AP Reachability表示网 络接入点检测， Security表示网络安全技术及其协议， Key Scope表示关键域， Capabilities表示处理能力， Mobility Domain表示移动 i或， High Throughput表 示高通量， Reserved表示保留， Virtual BSS表示虚拟基本服务集， BSS Edge 表示基本服务集边缘区域， Real BSS表示真实基本服务集。
本发明实施例中，接入点根据接收到的第三消息、该接入点周边各基本服 务集的频率复用信息以及上述复用策略调整自身的频率复用方式，从而微调自 身的分数频率复用状态， 以提供灵活兼容的分数频率复用模式。
基于上述实施例中的频率复用方法， 可选的， 本发明实施例提供的频率复 用方法也可以不引入虚拟 BSS， 而是在 Beacon或者其他管理帧中直接告知该站 点当前的 BSS工作在至少两个频段上； 此时， 该 BSS与至少两个工作频段的对 应关系体现为： BSSm: (CHm0, CHml， …， CH^
对应的， 为了更好的支持这种工作方式，接入点需要在每个工作频段上具 有主信道， 方便工作在该频段上的站点不需要切换频段就能获知本 BSS的信 息；对于这种情况，站点选择其解读到的任意一个工作频段作为其通信的频段， 或者是当前接入点所支持的所有工作频段。 其决定本 BSS的工作信道（即频率复用方式）时， 也可以不需要设置虚拟 BSS; 在这种情况下，站点汇报的扩展邻居报告中则需要指示工作在分数频率复用的
BSS的 BSSID以及其对应的至少两个工作频段。 具体的实现方式与上述实施例 图 9的描述类似， 此处不再赘述。
可选的， 本发明实施例还可以在物理上直接使用至少两个 BSS实现， 并将 这些 BSS统一成一个虚拟 BSS，例如当前的 2.4GHz和 5GHz并存的 Dual band (双 频带）的实现方法； 对应的， 只需要将实施例图 9中的真实 BSS与虚拟 BSS的关 系对调即可作为另一种实现方式， 具体步骤与上述实施例图 9的描述类似， 此 处不再赘述。
为便于理解，下面以一具体应用场景对本发明实施例中频率复用方法进行 具体描述：
对于现有的 WLAN ( Wireless Local Area Networks， 无线局域网络）终端
Legacy STA( Legacy Station,传统站点）和新一代的 WLAN终端 NG STA( Next Generation Station, 下一代站点）上述频率复用方法均可支持。
针对 NG STA来说， 接入点自动扫描该接入点周围各 BSS的工作信道或 接收 NG STA发送的工作信号， 从而获得各 BSS的工作频段信息。 该接入点根据复用策略以及获取到的周边各 BSS 的工作频段信息， 确定 自身的频率复用方式，该接入点根据自身的频率复用方式决定自身所支持的虚 拟 BSS的个数以及各虚拟 BSS的工作频段。 该接入点还可以根据复用策略以 及接入点和站点周边各 BSS 的频率复用信息的变化情况调整自身的频率复用 方式。
该接入点在 Beacon或者其他管理帧中携带 BSS处于分数频率复用模式的 相关信息， 并发送给周围的 NG STA, 该相关信息中包含至少两个虚拟 BSS 的工作频段以及虚拟 BSSID与真实 BSSID的对应关系。 当 NG STA接收到接 入点发送的 Beacon后， 由 NG STA发送给接入点一个指示自身是否支持分数 频率复用模式的帧。如果 NG STA支持分数频率复用模式， 那么该 NG STA能 获知虚拟 BSSID与真实 BSSID的关系。
当接入点确定 NG STA支持分数频率复用模式后，该接入点可以选择在至 少两个虚拟 BSS 的工作频段上同时为该站点发送数据， 也可以通过管理帧将 NG STA的工作频段在接入点所工作的频段内切换； 同样的， NG STA也可以 根据至少两个虚拟 BSS、至少两个虚拟 BSS分别对应的工作频段以及虚拟 BSS 之间的关系（例如是否对应同一个真实 BSS )在接入点所工作的频段内自由切 换， 此时只需接入点允许即可。 例如， 如图 10所示， 支持分数频率复用的接 入点 AP0与接入点 API ; 对于接入点 AP0， 可以工作在两个频段 CH。和 CH 其中 C 是该虚拟 BSS中心区域的频段，起始频点为 foo,结束频点为 f01; CHi 是该虚拟 BSS边缘区域的频段， 起始频点为 f1()， 结束频点为 fu; 该接入点可 以通过发送一个管理帧， 将 NG STA原来的工作频段从 C 切换至 CH。或从 CH。切换至 C ， 并不需要将该 NG STA与自身重新关联。 本发明实施例不局 限在两个频段， 也可以是 k个频段（k=l， 2, 3， ...， k )， 对于频段的数量不 作限制。
对于 Legacy STA来说， 同样可以支持， 通信过程与上述 NG STA描述中 的内容类似， 此处不再赘述。
上面的实施例从接入点侧的角度对接入点与站点在分数频率复用模式下 进行通信作了描述， 下面将从站点侧进行描述， 请参阅图 12， 本发明实施例 中频率复用方法另一实施例包括： 1201 , 站点接收接入点发送的第一消息；
站点接收接入点发送的第一消息， 该第一消息中携带基本服务集 BSS处 于分数频率复用模式的指示信息。
上述第一消息中包含字段， 该字段用于指示该 BSS处于分数频率复用模 式； 该分数频率复用模式通过至少两个虚拟 BSS以及各虚拟 BSS所对应的工 作频段来实现。对于指示方法而言，该接入点可以通过信息位的方式在 Beacon 或者其他管理帧中增加一个字段， 用于指示有多少个虚拟 BSS或直接体现至 少两个虚拟 BSSID与真实 BSSID的对应关系。 进一步的， 该接入点不仅指示 上述虚拟 BSS的个数，还可以利用字段中的比特 bit指示虚拟 BSS的地址。对 于上述指示该 BSS处于分数频率复用模式的方法在此不作限制。 的任意一个或者至少两个频段内发送。 接入点需要在 Beacon或者其他管理帧 中进一步指示本虚拟 BSS的工作频段。
进一步的， 该至少两个虚拟 BSSID是与真实 BSSID相关联的。 该真实的 BSSID就是接入点的 MAC地址， 而虚拟 BSSID则与各自的虚拟 BSS——对 应。 这种对应关系可以用下面的表达式体现：
BSSm(BSSm0,…，： BSS ), 其中， BSSm 接入点的真实 BSSID, ( BSSm0，…， BSS^ ) 则是 BSSn^ 对应的 k+1个虚拟 BSSID。
上述对应关系可以通过帧格式的方式具体指示，在实际的指示中可以不需 要指示真实 BSSID， 仅指示与各工作频段对应的虚拟 BSSID 即可， 如： (BSSm。， ...， BSS 如果真实 BSSID也对应了某工作频段， 则指示的方式 也可以是： （BSSm。， ...， BSSm, ...， BSS^ 除了上述指示方法， 该对应关 系还可以通过真实 BSSID和虚拟 BSSID的某种映射关系来实现，例如将 MSB 的两位 bit设置成 00， 表示该 BSSID为虚拟 BSSID; 设置成 11， 表示为真实 BSSID。 对上述对应关系以及该映射关系的指示方法， 在此不作限制。
1202、 上述站点向上述接入点发送第二消息；
该站点向该接入点发送第二消息， 其中， 该第二消息中携带该站点支持分 数频率复用模式的指示信息。
需要说明的是， 该站点支持分数频率复用模式即表示该站点可以辨识该 BSS处于分数频率复用模式， 并获取该 BSS所对应的频段信息。 上述第二消 息可以是由该站点发送的关联请求帧或其他帧，该帧携带一个能力域的指示信 息位， 用于指示该站点是否支持分数频率复用模式。 另外， 支持分数频率复用 模式， 即是该站点能获知虚拟 BSSID与真实 BSSID的关系。
1203、在上述接入点根据上述第二消息确定上述站点支持分数频率复用模 式后， 该站点与该接入点在分数频率复用模式下进行通信。
当该接入点根据第二消息中携带的该站点支持分数频率复用模式的指示 信息确定该站点支持分数频率复用模式后，该接入点与该站点在分数复用模式 下进行通信。其中， 该站点与该接入点在分数频率复用模式下进行通信即表示 该接入点可以选择在至少两个虚拟 BSS的工作频段上同时为该站点发送数据， 或通过管理帧将该站点的工作频段在接入点所工作的频段内自由切换。
该站点可以才艮据上述至少两个虚拟 BSS、 至少两个虚拟 BSS分别对应的 工作频段以及虚拟 BSS之间的关系 （例如是否对应同一个真实 BSS )在接入 点所工作的频段内自由切换， 此时只需接入点允许即可； 同样的， 该接入点也 可以选择在至少两个虚拟 BSS 的工作频段上同时为该站点发送数据， 或通过 管理帧将该站点的工作频段在接入点所工作的频段内自由切换。
本发明实施例中， 当该站点接收到该接入点发送的第一消息后， 该站点向 该接入点发送第二消息，且当该接入点根据第二消息确定该站点支持分数频率 复用模式后， 该站点与该接入点在分数频率复用模式下进行通信，从而使得该 站点在分数频率复用模式下工作， 有效的减少了 Wi-Fi网络中的频率干扰。
上面实施例中的频率复用方法，站点还可以获取接入点调整后的该接入点 的频率复用方式， 以便于灵活切换频段， 具体如下：
该站点向该接入点发送第三消息，该第三消息中携带该站点周边各基本服 务集的频率复用信息；该站点获取该接入点调整后的该接入点的频率复用方式 的参数；该接入点的频率复用方式的参数由该接入点根据扫描到的该接入点周 边各基本服务集的频率复用信息、 复用策略以及该第三消息调整。
需要说明的是，上述第三消息是该站点定期向该接入点发送的扩展邻居报 告， 用于向该接入点汇报该站点周边各 BSS 的频率复用信息； 对于站点发送 的扩展邻居报告， 可以在现有的邻居报告基础上， 扩展汇报中对 BSSID的进 一步信息补充， 例如 BSS是否为真实的 BSS， 以及所针对的区域是 BSS边缘 区域还是 BSS中心区域。 如上述图 11所示的一种指示结构， 即为一种扩展指 示的例子， 此处不再赘述。 上述频率复用信息中包含至少两个虚拟 BSS 的工 作频段以及虚拟 BSSID与真实 BSSID的对应关系； 对于该复用策略， 是指该 接入点为了在当前的 OBSS 环境下， 釆取哪种频率划分方法能够最大化自身 BSS的吞吐量或者是最大化支持的用户个数。 因此， 不同的复用策略有不同的 复用方法， 常见的方法包括但不限于以下规则：
如果交叠区域釆用正交频率分配的方案， 则为本 BSS与相邻 BSS交叠区域 传输的数据使用与该相邻 BSS不重叠的频段；
或者，
如果交叠区域釆用至少两个 BSS之间协作的方案， 则为本 BSS与相邻 BSS 交叠区域分配与该相邻 BSS相同的工作频段。
上述交叠区域是指一个真实 BSS (及其虚拟 BSS ) 与另一个真实 BSS (及 其虚拟 BSS ) 的交叠区域。
在上述两种常见方法中任意一种的基础之上，对于该复用策略还包括以下 内容：
在中心区域所使用的频段由各接入点自行决定；
在每个虚拟 BSS的工作频段， 具有至少一个主信道。
本发明实施例中， 站点向接入点发送第三消息，使得该接入点调整自身的 的频率复用方式； 该站点获取上述接入点调整后的频率复用方式的参数，从而 灵活的切换频段。
基于上述实施例中的频率复用方法， 可选的， 本发明实施例提供的频率复 用方法也可以不引入虚拟 BSS， 而是在 Beacon或者其他管理帧中携带相关信息 发送给站点， 使得站点获取该 BSS工作的至少两个频段； 此时， 该 BSS与至少 两个工作频段的对应关系体现为： BSSm: (CHm0, CHml， …， CH^
对应的， 为了更好的支持这种工作方式，接入点需要在每个工作频段上具 有主信道， 方便工作在该频段上的站点不需要切换频段就能获知本 BSS的信 息；对于这种情况，站点选择其解读到的任意一个工作频段作为其通信的频段， 或者是当前接入点所支持的所有工作频段。 对于站点发送的扩展邻居报告中则需要指示工作在分数频率复用的 BSS 的 BSSID以及其对应的至少两个工作频段。具体的实现方式与上述实施例图 12 的描述类似， 此处不再赘述。
可选的， 本发明实施例还可以在物理上直接使用至少两个 BSS实现， 并将 这些 BSS统一成一个虚拟 BSS，例如当前的 2.4GHz和 5GHz并存的 Dual band (双 频带） 的实现方法； 对应的， 只需要将实施例图 12中的真实 BSS与虚拟 BSS的 关系对调即可作为另一种实现方式， 具体步骤与上述实施例图 12的描述类似， 此处不再赘述。
为便于理解，下面以一具体应用场景对本发明实施例中频率复用方法进行 具体描述：
对于现有的 WLAN终端 legacy STA和新一代的 WLAN终端 NG STA,上 述频率复用方法均可支持。
针对 NG STA来说， 该 NG STA接收接入点发送的 Beacon或者其他管理 帧， 其中携带 BSS处于分数频率复用模式的相关信息， 该相关信息中包含至 少两个虚拟 BSS的工作频段以及虚拟 BSSID与真实 BSSID的对应关系。 当 NG STA接收到接入点发送的 Beacon后， 由 NG STA发送给接入点一个指示 自身是否支持分数频率复用模式的帧， 并将该帧发送给接入点。 如果 NG STA 支持分数频率复用模式， 那么该 NG STA能获知虚拟 BSSID与真实 BSSID的 关系。
当接入点确定 NG STA支持分数频率复用模式后， NG STA可以根据至少 两个虚拟 BSS、 至少两个虚拟 BSS分别对应的工作频段以及虚拟 BSS之间的 关系（例如是否对应同一个真实 BSS )在接入点所工作的频段内自由切换， 此 时只需接入点允许即可； 同样的， 接入点也可以选择在至少两个虚拟 BSS 的 工作频段上同时为 NG STA发送数据，或通过管理帧将 NG STA的工作频段在 接入点所工作的频段内切换。 例如， 如图 10所示， 支持分数频率复用的接入 点 AP0与接入点 API; 对于接入点 AP0， 可以工作在两个频段 CH。和 CH^ 其中 CHo是该虚拟 BSS中心区域的频段，起始频点为 ο，结束频点为 f01; CH! 是该虚拟 BSS边缘区域的频段， 起始频点为 f1()， 结束频点为 fu; 该接入点可 以通过发送一个管理帧， 将 NG STA原来的工作频段从 C 切换至 CH。或从 CH。切换至 C ， 并不需要将该 NG STA与自身重新关联。 此外， NG STA可 以获取接入点调整后的该接入点的频率复用方式， 以便于灵活切换频段。本发 明实施例不局限在两个频段， 也可以是 k个频段（k=l， 2, 3， ...， k )， 对于 频段的数量不作限制。
对于 Legacy STA来说， 同样可以支持， 通信过程与上述 NG STA描述中 的内容类似， 此处不再赘述。
以上实施例仅用以说明本发明的技术方案， 而非对其限制； 尽管参照前述 实施例对本发明进行了详细的说明， 本领域的普通技术人员应当理解： 其依然 可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进 行等同替换； 而这些修改或者替换， 并不使相应技术方案的本质脱离本发明各 实施例技术方案的精神和范围。

Claims

权 利 要 求
1、 一种接入点设备， 其特征在于， 包括：
第一发送单元， 用于向站点发送第一消息， 所述第一消息中携带基本服务 集处于分数频率复用模式的指示信息；
第一接收单元， 用于接收所述站点发送的第二消息， 所述第二消息中携带 所述站点支持分数频率复用模式的指示信息；
执行单元，用于根据所述接收单元接收到的第二消息确定所述站点支持分 数频率复用模式后， 与所述站点在分数频率复用模式下进行通信。
2、 根据权利要求 1所述的接入点设备， 其特征在于， 所述接入点设备还 包括：
扫描单元， 用于扫描信道， 以获取接入点周边各基本服务集的频率复用信 息；
确定单元，用于根据复用策略以及所述扫描单元获取到的所述接入点周边 各基本服务集的频率复用信息，确定所述接入点的频率复用方式； 所述复用策 略为在基本服务集的交叠区域内，所述接入点釆取最大化基本服务集吞吐量或 最大化支持用户个数的频率划分方式。
3、 根据权利要求 2所述的接入点设备， 其特征在于，
所述确定单元具体用于， 当交叠区域釆用正交频率分配的方案时， 为所述 接入点和所述接入点周边各基本服务集的交叠区域分配与所述接入点周边各 基本服务集不重叠的频段；
或，
所述确定单元具体用于，当交叠区域釆用至少两个基本服务集之间协作的 方案时，为所述接入点和所述接入点周边各基本服务集的交叠区域分配与所述 接入点周边各基本服务集相同的工作频段。
4、 根据权利要求 2所述的接入点设备， 其特征在于， 所述接入点设备还 包括：
第二接收单元， 用于接收所述站点发送的第三消息， 所述第三消息中携带 所述站点周边各基本服务集的频率复用信息；
调整单元， 用于根据所述复用策略、所述接入点周边各基本服务集的频率 复用信息以及所述第三消息调整所述接入点的频率复用方式；
第二发送单元，用于将所述调整单元调整后的接入点的频率复用方式的参 数发送给所述站点。
5、 根据权利要求 1至 4任一项所述的接入点设备， 其特征在于， 所述基 本服务集包括至少两个虚拟基本服务集，每个虚拟基本服务集对应一个虚拟基 本服务集标识符， 所述虚拟基本服务集与所述接入点的工作频段对应； 所述虚 拟基本服务集标识符与真实基本服务集标识符相关联，所述真实基本服务集标 识符为所述接入点的媒体访问控制 MAC地址。
6、 一种站点设备， 其特征在于， 包括：
接收模块， 用于接收接入点发送的第一消息， 所述第一消息中携带基本服 务集处于分数频率复用模式的指示信息；
第一发送模块， 用于向所述接入点发送第二消息， 所述第二消息中携带站 点支持分数频率复用模式的指示信息；
执行模块，用于在所述接入点根据所述第一发送模块发送的第二消息确定 所述站点支持分数频率复用模式后，与所述接入点在分数频率复用模式下进行 通信。
7、根据权利要求 6所述的站点设备， 其特征在于， 所述站点设备还包括： 第二发送模块， 用于向所述接入点发送第三消息， 所述第三消息中携带所 述站点周边各基本服务集的频率复用信息；
获取模块， 用于获取所述接入点调整后的接入点的频率复用方式的参数； 所述接入点的频率复用方式的参数由所述接入点根据扫描到的所述接入点周 边各基本服务集的频率复用信息、复用策略以及所述第三消息调整； 所述复用 策略为在基本服务集的交叠区域内，所述接入点釆取最大化基本服务集吞吐量 或最大化支持用户个数的频率划分方式。
8、 根据权利要求 6或 7所述的站点设备， 其特征在于， 所述基本服务集 包括至少两个虚拟基本服务集，每个虚拟基本服务集对应一个虚拟基本服务集 标识符， 所述虚拟基本服务集与所述接入点的工作频段对应； 所述虚拟基本服 务集标识符与真实基本服务集标识符相关联，所述真实基本服务集标识符为所 述接入点的媒体访问控制 MAC地址。
9、 一种频率复用方法， 其特征在于， 包括：
接入点向站点发送第一消息，所述第一消息中携带基本服务集处于分数频 率复用模式的指示信息；
所述接入点接收所述站点发送的第二消息，所述第二消息中携带所述站点 支持分数频率复用模式的指示信息；
所述接入点根据所述第二消息确定所述站点支持分数频率复用模式后，所 述接入点与所述站点在分数频率复用模式下进行通信。
10、 根据权利要求 9所述的频率复用方法， 其特征在于， 所述接入点向站 点发送第一消息之前包括：
所述接入点扫描信道，以获取所述接入点周边各基本服务集的频率复用信 息；
所述接入点根据复用策略以及获取到的所述接入点周边各基本服务集的 频率复用信息，确定自身的频率复用方式； 所述复用策略为在基本服务集的交 叠区域内，所述接入点釆取最大化基本服务集吞吐量或最大化支持用户个数的 频率划分方式。
11、 根据权利要求 10所述的频率复用方法， 其特征在于， 所述确定自身 的频率复用方式包括：
当交叠区域釆用正交频率分配的方案时，为所述接入点和所述接入点周边 各基本服务集的交叠区域分配与所述接入点周边各基本服务集不重叠的频段； 或，
当交叠区域釆用至少两个基本服务集之间协作的方案时，为所述接入点和 所述接入点周边各基本服务集的交叠区域分配与所述接入点周边各基本服务 集相同的工作频段。
12、 根据权利要求 10所述的频率复用方法， 其特征在于， 所述方法还包 括：
所述接入点接收所述站点发送的第三消息，所述第三消息中携带所述站点 周边各基本服务集的频率复用信息；
所述接入点根据所述复用策略、所述接入点周边各基本服务集的频率复用 信息以及所述第三消息调整自身的频率复用方式； 所述接入点将调整后的自身的频率复用方式的参数发送给所述站点。
13、 根据权利要求 9至 12任一项所述的频率复用方法， 其特征在于， 所 述基本服务集包括至少两个虚拟基本服务集，每个虚拟基本服务集对应一个虚 拟基本服务集标识符， 所述虚拟基本服务集与所述接入点的工作频段对应； 所 述虚拟基本服务集标识符与真实基本服务集标识符相关联，所述真实基本服务 集标识符为所述接入点的媒体访问控制 MAC地址。
14、 一种频率复用方法， 其特征在于， 包括：
站点接收接入点发送的第一消息，所述第一消息中携带基本服务集处于分 数频率复用模式的指示信息；
所述站点向所述接入点发送第二消息，所述第二消息中携带所述站点支持 分数频率复用模式的指示信息；
在所述接入点根据所述第二消息确定所述站点支持分数频率复用模式后， 所述站点与所述接入点在分数频率复用模式下进行通信。
15、 根据权利要求 14所述的频率复用方法， 其特征在于， 所述方法还包 括：
所述站点向所述接入点发送第三消息，所述第三消息中携带所述站点周边 各基本服务集的频率复用信息；
所述站点获取所述接入点调整后的所述接入点的频率复用方式的参数；所 述接入点的频率复用方式的参数由所述接入点根据扫描到的所述接入点周边 各基本服务集的频率复用信息、复用策略以及所述第三消息调整； 所述复用策 略为在基本服务集的交叠区域内，所述接入点釆取最大化基本服务集吞吐量或 最大化支持用户个数的频率划分方式。
16、 根据权利要求 14或 15所述的频率复用方法， 其特征在于， 所述基本 服务集包括至少两个虚拟基本服务集，每个虚拟基本服务集对应一个虚拟基本 服务集标识符， 所述虚拟基本服务集与所述接入点的工作频段对应； 所述虚拟 基本服务集标识符与真实基本服务集标识符相关联，所述真实基本服务集标识 符为所述接入点的媒体访问控制 MAC地址。
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