WO2015135311A1 - 无线帧的发送方法及系统 - Google Patents

无线帧的发送方法及系统 Download PDF

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Publication number
WO2015135311A1
WO2015135311A1 PCT/CN2014/086064 CN2014086064W WO2015135311A1 WO 2015135311 A1 WO2015135311 A1 WO 2015135311A1 CN 2014086064 W CN2014086064 W CN 2014086064W WO 2015135311 A1 WO2015135311 A1 WO 2015135311A1
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Prior art keywords
pcp
channel
network
radio frame
established
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PCT/CN2014/086064
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English (en)
French (fr)
Inventor
田开波
邢卫民
孙波
姚珂
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中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US15/125,673 priority Critical patent/US20170006631A1/en
Priority to EP14885286.6A priority patent/EP3119153A4/en
Publication of WO2015135311A1 publication Critical patent/WO2015135311A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H04W40/244—Connectivity information management, e.g. connectivity discovery or connectivity update using a network of reference devices, e.g. beaconing
    • 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]
    • 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

Definitions

  • the present invention relates to the field of communications, and in particular to a method and system for transmitting a radio frame.
  • WLAN wireless local area networks
  • the IEEE 802.11 working group of the Institute of Electrical and Electronics Engineers has defined a series of WLAN technology standards such as 802.11a, 802.11b, 802.11g and 802.11n, which mainly define the physical layer (PHY) and media access control (MAC) layer specifications.
  • the basic architecture of the above-mentioned standard wireless local area network (WLAN) refers to a basic service set (BSS) including an access point (AP) and multiple sites associated with the AP (Station). , referred to as STA).
  • BSS basic service set
  • AP access point
  • STA multiple sites associated with the AP
  • PBSS personal basic service set
  • PCP personal basic service set control point
  • the beacon frame sent by the PCP can maintain the PBSS.
  • the network also includes a non-personal basic service set control point station (non-personal basic service set control point station, referred to as non-PCP STA), and the non-PCP STA can directly communicate.
  • non-PCP STA non-personal basic service set control point station
  • the PCP/AP divides a Beacon Interval (BI) into several periods with different functions.
  • EDCA Enhanced Distributed Channel Access
  • a beacon transmission interval (BTI) is used for a PCP/AP to transmit a Beacon frame
  • A-BFT association beam forming training
  • the beamforming training between the AP and the non-PCP/non-AP STA, and the announcement transmission interval (ATI) is used to manage between the PCP/AP and the non-PCP/non-AP STA.
  • Frame or control frame interaction A data transfer interval (DTI) is used for data transmission between a PCP/AP and a non-PCP/non-AP STA, or between non-PCP/non-AP STA stations.
  • DTI data transfer interval
  • the IEEE 802.11aj task force was established to revise the IEEE 802.11ad standard for the current 45 GHz and 60 GHz bands in China.
  • the Ministry of Industry and Information Technology of China announced the spectrum usage rules for the 45 GHz band in China, as follows:
  • Table 1 shows the channel configuration of a broadband wireless access system in the 40-50 GHz band. As shown in Table 1:
  • the establishment of a network device or a control node in the network is a PCP/AP.
  • PCP/AP networks with a working bandwidth of 540MHz
  • a 1080MHz device needs to establish a working network with a working bandwidth of 1080MHz on this 1080MHz channel (assumed to be called Network A)
  • the 1080MHz device needs to send the Beacon of Network A on one of the 540MHz channels.
  • this 540MHz channel is called the primary channel of network A, and the other 540MHz can be called the secondary channel of network A.
  • the PCP/AP working on the secondary channel of the network A and the PCG/AP of the 1080 MHz network cannot monitor each other's network Beacon frames, which in turn causes the two PCPs/APs to allocate network resources.
  • the allocation information of the other party is missing, it is very easy to cause strong interference between the two networks.
  • the present invention provides a method and system for transmitting a radio frame, so as to at least solve the problem that coordination between networks cannot be reduced to reduce inter-network interference under network conditions in which various operating bandwidths exist in the related art.
  • a method of transmitting a radio frame is provided.
  • the method for transmitting a radio frame includes: the first PCP/AP sends the indication information to the second PCP/AP, where the indication information is used to notify the second PCP/AP on the primary channel of the first PCP/AP Transmitting a first radio frame including network signaling information, the working channel of the first PCP/AP is divided into a primary channel and a secondary channel; and the second PCP/AP transmits the first radio frame on the primary channel according to the indication information.
  • the working channel of the second PCP/AP is a secondary channel.
  • the indication information is a preset wireless signal sent by the first PCP/AP to the second PCP/AP on the secondary channel, or the indication information carries the preset wireless sent by the first PCP/AP to the second PCP/AP.
  • the default field in the frame is a preset wireless signal sent by the first PCP/AP to the second PCP/AP on the secondary channel, or the indication information carries the preset wireless sent by the first PCP/AP to the second PCP/AP.
  • the first radio frame is one of: a beacon frame sent by the second PCP/AP in the network established by the PCP/AP; and the simplified processed message sent by the second PCP/AP in the established network Framed frame; a signaling frame sent by the second PCP/AP within the established network.
  • the method further includes: the second PCP/AP transmitting the second radio frame on the secondary channel, notifying the station in the network established by the second PCP/AP, and switching the working channel of the station from the secondary channel to the primary channel.
  • the method further includes: the second PCP/AP transmitting the second radio frame on the secondary channel, notifying the station in the network established by the second PCP/AP to receive the beacon frame on the primary channel, and continuing on the secondary channel.
  • A-BFT, ATI, and DTI work hours.
  • the sending, by the second PCP/AP, the first radio frame according to the indication information comprises: the second PCP/AP transmitting the beacon frame only on the primary channel; the non-PCP/non-AP station working only on the secondary channel, where The non-PCP/non-AP site is a site that has joined the established network.
  • the method further includes: the non-PCP/non-AP station listening to the first radio frame sent by the second PCP/AP on the primary channel, where the non-PCP/non-AP station is to be added to the second PCP/ The site of the network established by the AP; the non-PCP/non-AP station performs a network joining process with the second PCP/AP on the secondary channel according to the first radio frame that is monitored.
  • a transmission system for a radio frame is provided.
  • the transmitting system of the radio frame includes: a first PCP/AP and a second PCP/AP; and a first PCP/AP, configured to send indication information to the second PCP/AP, where the indication information is used for notification
  • the second PCP/AP transmits a first radio frame including network signaling information on a primary channel of the first PCP/AP, where the working channel of the first PCP/AP is divided into a primary channel and a secondary channel; and the second PCP/AP is configured.
  • the first radio frame is transmitted on the primary channel according to the indication information.
  • the working channel of the second PCP/AP is a secondary channel.
  • the indication information is a preset wireless signal sent by the first PCP/AP to the second PCP/AP on the secondary channel, or the indication information carries the preset wireless sent by the first PCP/AP to the second PCP/AP.
  • the default field in the frame is a preset wireless signal sent by the first PCP/AP to the second PCP/AP on the secondary channel, or the indication information carries the preset wireless sent by the first PCP/AP to the second PCP/AP.
  • the first radio frame is one of: a beacon frame sent by the second PCP/AP in the network established by the PCP/AP; and the simplified processed message sent by the second PCP/AP in the established network Framed frame; a signaling frame sent by the second PCP/AP within the established network.
  • the second PCP/AP is further configured to send the second radio frame on the secondary channel, notify the station in the network established by the second PCP/AP, and switch the working channel of the station from the secondary channel to the primary channel.
  • the second PCP/AP is further configured to send the second radio frame on the secondary channel, notify the station in the network established by the second PCP/AP to receive the beacon frame on the primary channel, and continue to perform on the secondary channel.
  • the above system further comprises: a non-PCP/non-AP station; the second PCP/AP is further configured to send a beacon frame only on the primary channel; the non-PCP/non-AP site is set to be only Working on the channel, where the non-PCP/non-AP site is the site that has joined the established network.
  • the non-PCP/non-AP site is further configured to listen to the first radio frame sent by the second PCP/AP on the primary channel, where the non-PCP/non-AP site is to be added to the second PCP/AP.
  • the site of the established network; the non-PCP/non-AP site is further configured to perform a network joining process with the second PCP/AP on the secondary channel according to the first wireless frame that is monitored.
  • the working channel of the first PCP/AP is used as the primary channel and the secondary channel, and the first PCP/AP sends the indication information to the second PCP/AP, where the indication information is used to notify the second PCP/AP that The first radio frame including the network signaling information is sent on the primary channel of the first PCP/AP; the second PCP/AP transmits the first radio frame on the primary channel according to the indication information, that is, the PCP using the same channel in the same area.
  • the AP can inform each other of the manner in which the radio frame is sent by using the indication information, thereby solving the problem that the network cannot co-ordinate between the networks to reduce inter-network interference under the network conditions in which various working bandwidths exist in the related art, and thus can be reasonably scheduled. Allocate network time-frequency airspace resources to reduce mutual interference and improve resource utilization.
  • FIG. 1 is a schematic diagram of an EDCA according to the related art
  • FIG. 2 is a flowchart of a method for transmitting a radio frame according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of three channel frequency positions in accordance with a preferred embodiment of the present invention.
  • FIG. 4 is a structural block diagram of a transmission system of a radio frame according to an embodiment of the present invention.
  • FIG. 5 is a structural block diagram of a transmission system of a radio frame according to a preferred embodiment of the present invention.
  • FIG. 2 is a flow chart of a method of transmitting a radio frame according to an embodiment of the present invention. As shown in FIG. 2, the method may include the following processing steps:
  • Step S202 The first PCP/AP sends the indication information to the second PCP/AP, where the indication information is used to notify the second PCP/AP to send the first wireless information including the network signaling information on the primary channel of the first PCP/AP.
  • a frame the working channel of the first PCP/AP is divided into a primary channel and a secondary channel;
  • Step S204 The second PCP/AP sends the first radio frame on the primary channel according to the indication information.
  • the working channel of the first PCP/AP may be divided into a primary channel and a secondary channel, and the first PCP/AP sends indication information to the second PCP/AP, where the indication information is used to notify the second PCP.
  • the PCP/AP transmits a first radio frame including network signaling information on a primary channel of the first PCP/AP; the second PCP/AP transmits a first radio frame on the primary channel according to the indication information, that is, uses the same channel in the same area
  • the PCP/AP can inform each other of the manner of transmitting the radio frame by using the indication information, thereby solving the problem that the network cannot co-ordinate between the networks to reduce inter-network interference under the network condition that there are multiple working bandwidths in the related art, and thus can Reasonably dispatch and allocate network time-frequency airspace resources, reduce mutual interference, and improve resource utilization.
  • the working channel of the second PCP/AP is a secondary channel.
  • the indication information may be a preset wireless signal sent by the first PCP/AP to the second PCP/AP on the secondary channel, or the indication information may also be carried in the first PCP/AP to the second PCP/AP.
  • the foregoing first radio frame may be but not limited to one of the following:
  • the above method may further include the following operations:
  • Step S1 The second PCP/AP sends a second radio frame on the secondary channel, notifies the station in the network established by the second PCP/AP, and switches the working channel of the station from the secondary channel to the primary channel.
  • the above method may further comprise the following steps:
  • Step S2 The second PCP/AP sends a second radio frame on the secondary channel, notifying the station in the network established by the second PCP/AP to receive the beacon frame on the primary channel, and continuing to perform A-BFT on the secondary channel. ATI and DTI working hours.
  • the second PCP/AP sending the radio frame according to the indication information may include the following operations:
  • Step S3 the second PCP/AP transmits the beacon frame only on the primary channel
  • Step S4 The non-PCP/non-AP site works only on the secondary channel, wherein the non-PCP/non-AP site is a site that has joined the established network.
  • the above method may further comprise the following steps:
  • Step S5 The non-PCP/non-AP station monitors the first radio frame sent by the second PCP/AP on the primary channel, where the non-PCP/non-AP site is the network to be joined to the second PCP/AP.
  • Step S6 The non-PCP/non-AP station performs a network joining process with the second PCP/AP on the secondary channel according to the first radio frame that is monitored.
  • FIG. 3 is a schematic diagram of three channel frequency positions in accordance with a preferred embodiment of the present invention.
  • PCP/AP which can be called PCP1/AP1, PCP2/AP2, and PCP3/AP3, respectively.
  • PCP1/AP1 and PCP2/AP2 work in On channel 1, PCP3/AP3 operates on channel 2.
  • the bandwidths of channel 1 and channel 2 are both 540 MHz, and channel 1 and channel 2 are adjacent.
  • Channel 1 and channel 2 are combined to form channel 3, and the bandwidth is 1080 MHz.
  • PCP4/AP4 A network with a working bandwidth of 1080MHz needs to be established on channel 3.
  • PCP4/AP4 listens on channel 1 and knows channel 1.
  • PCP4/AP4 listens on channel 2 and knows that there is one network established by PCP3/AP3 on channel 2, and the working bandwidth of all three networks is 540MHz. Then, PCP4/AP4 may select channel 1 or channel 2 as the primary channel on its working bandwidth according to at least one of the principle of random selection, the weight of the network load, the number of networks on the channel, and the like, and use another channel as the secondary channel. .
  • PCP4/AP4 selects channel 2 as the primary channel for its own operation and channel 1 as the secondary channel.
  • PCP4/AP4 can send a Beacon frame on channel 2 to establish a new network, and send a wireless signal on channel 1, where the wireless signal can be sent in the form of a broadcast, of course, it can also be for PCP1/AP1 and PCP2/AP2.
  • the multicast signal may also be a unicast wireless signal for PCP1/AP1 and PCP2/AP2, respectively.
  • the wireless signal indicates that PCP1/AP1 and PCP2/AP2 transmit the Beacon frame of the respective network on channel 2, or PCP4/AP4 will send a specific field of a radio frame on channel 1 to indicate that PCP1/AP1 and PCP2/AP2 are in The Beacon frame of the respective network is transmitted on channel 2.
  • PCP/AP there are three networks established by PCP/AP, which can be called PCP1/AP1, PCP2/AP2, and PCP3/AP3, respectively.
  • PCP1/AP1 and PCP2/AP2 work in On channel 1, PCP3/AP3 operates on channel 2.
  • the bandwidths of channel 1 and channel 2 are both 540 MHz, and channel 1 and channel 2 are adjacent.
  • Channel 1 and channel 2 are combined to form channel 3, and the bandwidth is 1080 MHz.
  • PCP4/AP4 A network with a working bandwidth of 1080MHz needs to be established on channel 3.
  • PCP4/AP4 listens on channel 1 and knows channel 1.
  • PCP4/AP4 is monitored on channel 2 Listen, it is known that there is one network established by PCP3/AP3 on channel 2, and the working bandwidth of the three networks is 540 MHz.
  • PCP4/AP4 may select channel 1 or channel 2 as the primary channel on its working bandwidth according to at least one of the principle of random selection, the weight of the network load, the number of networks on the channel, and the like, and use another channel as the secondary channel. .
  • PCP4/AP4 selects channel 2 as the primary channel for its own operation and channel 1 as the secondary channel.
  • PCP4/AP4 can send a Beacon frame on channel 2 to establish a new network, and send a wireless signal on channel 1, where the wireless signal can be sent in the form of a broadcast, of course, it can also be for PCP1/AP1 and PCP2/AP2.
  • the multicast signal may also be a unicast wireless signal for PCP1/AP1 and PCP2/AP2, respectively.
  • the wireless signal indicates that PCP1/AP1 and PCP2/AP2 transmit the Beacon frame of the respective network on channel 2.
  • PCP1/AP1 After receiving the wireless signal transmitted by PCP4/AP4, PCP1/AP1 will send the Beacon frame of its own network on channel 2; PCP1/AP1 maintains normal network operation on channel 1.
  • PCP2/AP2 After receiving the wireless signal sent by PCP4/AP4, PCP2/AP2 will send the Beacon frame of its own network on channel 2; PCP2/AP2 maintains normal network operation on channel 1.
  • PCP/AP there are three networks established by PCP/AP, which can be called PCP1/AP1, PCP2/AP2, and PCP3/AP3, respectively.
  • PCP1/AP1 and PCP2/AP2 work in On channel 1, PCP3/AP3 operates on channel 2.
  • the bandwidths of channel 1 and channel 2 are both 540 MHz, and channel 1 and channel 2 are adjacent.
  • Channel 1 and channel 2 are combined to form channel 3, and the bandwidth is 1080 MHz.
  • PCP4/AP4 A network with a working bandwidth of 1080MHz needs to be established on channel 3.
  • PCP4/AP4 listens on channel 1 and knows channel 1.
  • PCP4/AP4 listens on channel 2 and knows that there is one network established by PCP3/AP3 on channel 2, and the working bandwidth of all three networks is 540MHz. Then, PCP4/AP4 may select channel 1 or channel 2 as the primary channel on its working bandwidth according to at least one of the principle of random selection, the weight of the network load, the number of networks on the channel, and the like, and use another channel as the secondary channel. .
  • PCP4/AP4 selects channel 2 as the primary channel for its own operation and channel 1 as the secondary channel.
  • PCP4/AP4 can send a Beacon frame on channel 2 to establish a new network, and send a wireless signal on channel 1, where the wireless signal can be sent in the form of broadcast, of course, it can also be for PCP1/AP1 and
  • the multicast signal of PCP2/AP2 may also be a unicast wireless signal for PCP1/AP1 and PCP2/AP2, respectively.
  • the wireless signal indicates that PCP1/AP1 and PCP2/AP2 transmit the Beacon frame of the respective network on channel 2.
  • PCP1/AP1 After receiving the wireless signal transmitted by PCP4/AP4, PCP1/AP1 will send the Beacon frame of its own network on channel 2; PCP1/AP1 maintains normal network operation on channel 1.
  • PCP2/AP2 After PCP2/AP2 receives the wireless signal sent by PCP4/AP4, PCP2/AP2 sends a radio frame to non-PCP/non-AP STA in the network on channel 1 to notify non-PCP/non- in the network. AP STA, the network will operate on channel 2, and the non-PCP/non-AP STA only needs to switch the working channel to channel 2 according to the radio frame indication.
  • PCP/AP there are three networks established by PCP/AP, which can be called PCP1/AP1, PCP2/AP2, and PCP3/AP3, respectively.
  • PCP1/AP1 and PCP2/AP2 work in On channel 1, PCP3/AP3 operates on channel 2.
  • the bandwidths of channel 1 and channel 2 are both 540 MHz, and channel 1 and channel 2 are adjacent.
  • Channel 1 and channel 2 are combined to form channel 3, and the bandwidth is 1080 MHz.
  • PCP4/AP4 A network with a working bandwidth of 1080MHz needs to be established on channel 3.
  • PCP4/AP4 listens on channel 1 and knows channel 1.
  • PCP4/AP4 listens on channel 2 and knows that there is one network established by PCP3/AP3 on channel 2, and the working bandwidth of all three networks is 540MHz. Then, PCP4/AP4 may select channel 1 or channel 2 as the primary channel on its working bandwidth according to at least one of the principle of random selection, the weight of the network load, the number of networks on the channel, and the like, and use another channel as the secondary channel. .
  • PCP4/AP4 selects channel 2 as the primary channel for its own operation and channel 1 as the secondary channel.
  • PCP4/AP4 can send a Beacon frame on channel 2 to establish a new network, and send a wireless signal on channel 1, where the wireless signal can be sent in the form of a broadcast, of course, it can also be for PCP1/AP1 and PCP2/AP2.
  • the multicast signal may also be a unicast wireless signal for PCP1/AP1 and PCP2/AP2, respectively.
  • the wireless signal indicates that PCP1/AP1 and PCP2/AP2 transmit the Beacon frame of the respective network on channel 2.
  • PCP1/AP1 After PCP1/AP1 receives the wireless signal sent by PCP4/AP4, PCP1/AP1 sends a radio frame to non-PCP/non-AP STA in the network on channel 1 to notify non-PCP/non- in the network.
  • AP STA the BTI phase of the network will be performed on channel 2.
  • PCP1/AP1 switches to channel 2 to transmit Beacon frames, and non-PCP/non-AP STAs switch to channel 2 to receive Beacon frames.
  • Other stages in BI such as: A-BFT, ATI, and DTI will still be on channel 1, and PCP1/AP1 and non-PCP/non-AP STAs in the network will switch to channel 1 for operation.
  • PCP2/AP2 After PCP2/AP2 receives the wireless signal sent by PCP4/AP4, PCP2/AP2 sends a radio frame to non-PCP/non-AP STA in the network on channel 1 to notify non-PCP/non- in the network.
  • AP STA the network will operate on channel 2, and the non-PCP/non-AP STA in the network only needs to switch the working channel to channel 2 according to the radio frame indication.
  • PCP/AP there are three networks established by PCP/AP, which can be called PCP1/AP1, PCP2/AP2, and PCP3/AP3, respectively.
  • PCP1/AP1 and PCP2/AP2 work in On channel 1, PCP3/AP3 operates on channel 2.
  • the bandwidths of channel 1 and channel 2 are both 540 MHz, and channel 1 and channel 2 are adjacent.
  • Channel 1 and channel 2 are combined to form channel 3, and the bandwidth is 1080 MHz.
  • PCP4/AP4 A network with a working bandwidth of 1080MHz needs to be established on channel 3.
  • PCP4/AP4 listens on channel 1 and knows channel 1.
  • PCP4/AP4 listens on channel 2 and knows that there is one network established by PCP3/AP3 on channel 2, and the working bandwidth of all three networks is 540MHz. Then, PCP4/AP4 may select channel 1 or channel 2 as the primary channel on its working bandwidth according to at least one of the principle of random selection, the weight of the network load, the number of networks on the channel, and the like, and use another channel as the secondary channel. .
  • PCP4/AP4 selects channel 2 as the primary channel for its own operation and channel 1 as the secondary channel.
  • PCP4/AP4 can send a Beacon frame on channel 2 to establish a new network, and send a wireless signal on channel 1, where the wireless signal can be sent in the form of a broadcast, of course, it can also be for PCP1/AP1 and PCP2/AP2.
  • the multicast signal may also be a unicast wireless signal for PCP1/AP1 and PCP2/AP2, respectively.
  • the wireless signal indicates that PCP1/AP1 and PCP2/AP2 transmit the Beacon frame of the respective network on channel 2.
  • PCP1/AP1 After PCP1/AP1 receives the wireless signal sent by PCP4/AP4, PCP1/AP1 sends a radio frame to non-PCP/non-AP STA in the network on channel 1 to notify non-PCP/non- in the network.
  • AP STA PCP1/AP1 will send a Beacon frame on channel 1.
  • the network will not have a BTI phase on channel 2.
  • the non-PCP/non-AP STA in the network only needs to work on channel 2, and there is no need to switch to channel 1 to receive the Beacon frame.
  • the information contained in the Beacon frame will be sent through the channel 1 in the A-BFT or ATI phase, and may be sent in a Beacon frame or in a management format or control frame in other formats.
  • PCP2/AP2 After PCP2/AP2 receives the wireless signal sent by PCP4/AP4, PCP2/AP2 sends a radio frame to non-PCP/non-AP STA in the network on channel 1 to notify non-PCP/non- in the network. AP STA, the network will operate on channel 2, and the non-PCP/non-AP STA only needs to switch the working channel to channel 2 according to the radio frame indication.
  • PCP/AP there are three networks established by PCP/AP, which can be called PCP1/AP1, PCP2/AP2, and PCP3/AP3, respectively.
  • PCP1/AP1 and PCP2/AP2 work in On channel 1, PCP3/AP3 operates on channel 2.
  • the bandwidths of channel 1 and channel 2 are both 540 MHz, and channel 1 and channel 2 are adjacent.
  • Channel 1 and channel 2 are combined to form channel 3, and the bandwidth is 1080 MHz.
  • PCP4/AP4 A network with a working bandwidth of 1080MHz needs to be established on channel 3.
  • PCP4/AP4 listens on channel 1 and knows channel 1.
  • PCP4/AP4 listens on channel 2 and knows that there is one network established by PCP3/AP3 on channel 2, and the working bandwidth of all three networks is 540MHz. Then, PCP4/AP4 may select channel 1 or channel 2 as the primary channel on its working bandwidth according to at least one of the principle of random selection, the weight of the network load, the number of networks on the channel, and the like, and use another channel as the secondary channel. .
  • PCP4/AP4 selects channel 2 as the primary channel for its own operation and channel 1 as the secondary channel.
  • PCP4/AP4 can send a Beacon frame on channel 2 to establish a new network, and send a wireless signal on channel 1, where the wireless signal can be sent in the form of a broadcast, of course, it can also be for PCP1/AP1 and PCP2/AP2.
  • the multicast signal may also be a unicast wireless signal for PCP1/AP1 and PCP2/AP2, respectively.
  • the wireless signal indicates that PCP1/AP1 and PCP2/AP2 transmit the Beacon frame of the respective network on channel 2, or PCP4/AP4 will send a specific field of a radio frame on channel 1 to indicate that PCP1/AP1 and PCP2/AP2 are in The Beacon frame of the respective network is transmitted on channel 2.
  • PCP1/AP1 After PCP1/AP1 receives the wireless signal sent by PCP4/AP4, PCP1/AP1 sends a radio frame to non-PCP/non-AP STA in the network on channel 1 to notify non-PCP/non- in the network.
  • AP STA, PCP1/AP1 will send a Beacon frame on channel 2.
  • the network will not have a BTI phase on channel 1, and the non-PCP/non-AP STA in the network only needs to work on channel 1, without switching to receive the Beacon frame on channel 2, and the information contained in the Beacon frame will be
  • the channel 1 is sent in the A-BFT or ATI phase, and may be sent by using a Beacon frame, or may be sent by using a management frame or a control frame of other formats.
  • PCP2/AP2 After PCP2/AP2 receives the wireless signal sent by PCP4/AP4, PCP2/AP2 sends a radio frame to non-PCP/non-AP STA in the network on channel 1 to notify non-PCP/non- in the network. AP STA, the network will operate on channel 2, and the non-PCP/non-AP STA only needs to switch the working channel to channel 2 according to the radio frame indication.
  • the transmitting system of the radio frame may include: a first PCP/AP 10 and a second PCP/AP 20; the first PCP/AP 10 is configured to send indication information to the second PCP/AP, where The indication information is used to notify the second PCP/AP to send the first radio frame including the network signaling information on the primary channel of the first PCP/AP, where the working channel of the first PCP/AP is divided into a primary channel and a secondary channel;
  • the PCP/AP 20 is configured to transmit the first radio frame on the primary channel according to the indication information.
  • the system shown in FIG. 4 solves the problem that the network can not coordinate between the networks to reduce inter-network interference under the network conditions with multiple working bandwidths in the related art, and thus can reasonably schedule the allocation of network time-frequency airspace resources. To reduce mutual interference and improve resource utilization.
  • the working channel of the second PCP/AP is a secondary channel.
  • the indication information may be a preset wireless signal sent by the first PCP/AP to the second PCP/AP on the secondary channel, or the indication information may also be carried in the first PCP/AP to the second PCP/AP.
  • the foregoing first radio frame may be but not limited to one of the following:
  • the second PCP/AP 20 is further configured to send a second radio frame on the secondary channel, notify the station in the network established by the second PCP/AP, and switch the working channel of the station from the secondary channel to the primary channel.
  • the second PCP/AP 20 is further configured to send a second radio frame on the secondary channel, notify the station in the network established by the second PCP/AP to receive the beacon frame on the primary channel, and continue on the secondary channel.
  • A-BFT, ATI, and DTI work hours.
  • the above system may further include: a non-PCP/non-AP station 30; the second PCP/AP20 is further configured to transmit a beacon frame only on the primary channel; non-PCP/non- The AP site 30 is configured to operate only on the secondary channel, where the non-PCP/non-AP site is a site that has joined the established network.
  • the non-PCP/non-AP station 30 is further configured to listen to the first radio frame sent by the second PCP/AP on the primary channel, where the non-PCP/non-AP site is to be added to the second PCP/ The site of the network established by the AP; the non-PCP/non-AP station 30 is further configured to perform a network joining process with the second PCP/AP on the secondary channel according to the first radio frame that is monitored.
  • the above embodiments achieve the following technical effects (it is necessary to explain that these effects are achievable by some preferred embodiments): using the technical solutions provided by the embodiments of the present invention, the same The PCP/APs that use the same channel in the area can listen to each other's beacon frames, and reasonably schedule the allocation of network time-frequency airspace resources, reduce mutual interference, and improve resource utilization.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the method and system for transmitting a radio frame provided by the embodiment of the present invention have the following beneficial effects: the PCP/APs using the same channel in the same area can mutually monitor respective beacon frames, and when the network is allocated reasonably Frequency and space resources, reduce mutual interference and improve resource utilization.

Abstract

本发明公开了一种无线帧的发送方法及系统，在上述方法中，第一PCP/AP向第二PCP/AP发送指示信息，其中，指示信息用于通知第二PCP/AP在第一PCP/AP的主信道上发送包含网络信令信息的第一无线帧，所述第一PCP/AP的工作信道分为主信道和辅信道；第二PCP/AP根据指示信息在主信道上发送第一无线帧。根据本发明提供的技术方案，能够合理地调度分配网络时频空域资源，减少相互间的干扰，提高资源利用率。

Description

无线帧的发送方法及系统 技术领域
本发明涉及通信领域，具体而言，涉及一种无线帧的发送方法及系统。
背景技术
当前，在无线网络领域，随着无线局域网(WLAN)的飞速发展，全球对WLAN的覆盖需求日益增长。电气和电子工程师协会工业规范IEEE802.11工作组先后定义了802.11a，802.11b，802.11g以及802.11n等一系列WLAN技术标准，主要制定物理层(PHY)和媒体访问控制(MAC)层规范。上述标准的无线局域网(WLAN)的基本架构是指一个基本服务集(basic service set，简称为BSS)包含一个接入点(access point，简称为AP)以及与AP相关联的多个站点(Station，简称为STA)。
IEEE802.11n的下一代演进标准之一，主要针对的是60GHz应用频段，工作信道带宽为2.16GHz，共包含4个独立的2.16GHz信道。标准中，在原有基本架构的基础上，引入了个人基本服务集(personal basic service set，简称为PBSS)的概念。PBSS是一个点对点(ad hoc)网络，在PBSS中存在一个控制节点——个人基本服务集控制点(personal basic service set control point，简称为PCP)，PCP发送的信标(Beacon)帧能够维持PBSS同步，同时网络中还包含有非个人基本服务集控制点站点(non-personal basic service set control point station，简称为non-PCP STA)，该non-PCP STA可以直接进行通信。
在IEEE802.11ad，采用的是时分双工(TDD)工作模式，PCP/AP将一个信标间隔(Beacon Interval，简称为BI)分成了几个具有不同功能的时期。图1是根据相关技术的增强的分布式信道接入(EDCA)的示意图。如图1所示，信标传输间隔(beacon transmission interval，简称为BTI)用于PCP/AP发送Beacon帧，关联波束赋形训练(association beam forming training，简称为A-BFT)用于在PCP/AP与non-PCP/non-AP STA之间进行波束赋形的训练，通告传输间隔(announcement transmission interval，简称为ATI)用于在PCP/AP和non-PCP/non-AP STA之间进行管理帧或控制帧的交互。数据传输间隔(data transfer interval，简称为DTI)用于在PCP/AP和non-PCP/non-AP STA之间、或者non-PCP/non-AP STA站点间的数据传输。
2012年，IEEE802.11aj任务组成立，针对目前中国的45GHz和60GHz频段，修订IEEE802.11ad标准。2013年下半年，中国工信部公布了中国的45GHz频段频谱使用规则，具体如下：
(一)工作频率范围：42.3—47.0GHz，47.2—48.4GHz；
(二)信道带宽：1080MHz、540MHz。
表1是40－50吉赫兹频段宽带无线接入系统的信道配置。如表1所示：
表1
Figure PCTCN2014086064-appb-000001
在上述规则下，可能存在两种工作带宽的设备，支持工作带宽540MHz和1080MHz的设备(即支持1080MHz的设备同时也能够支持540MHz)。而建立网络设备或者网络中的控制节点是PCP/AP。
如果在同一个区域同一个1080MHz信道内，两个540MHz信道上都存在一个或者多个工作带宽为540MHz的设备(PCP/AP)建立的网络。当一个1080MHz的设备需要在此1080MHz信道上建立一个工作带宽为1080MHz的工作网络(假定称之为网络A)时，1080MHz的设备(PCP/AP)需要在其中一个540MHz信道上发送网络A的Beacon帧，此540MHz信道称之为网络A的主信道，则另一个540MHz则可以称之为网络A的辅信道。
在上述情况下，工作在网络A的辅信道上的PCP/AP和1080MHz网络即网络A的PCP/AP无法相互监听到对方发送的网络Beacon帧，进而会造成两个PCP/AP进行网络资源分配时缺少对方的分配信息，由此极易造成两个网络间的强烈干扰。
发明内容
本发明提供了一种无线帧的发送方法及系统，以至少解决在相关技术中存在多种工作带宽的网络条件下，无法在网络间进行协调以降低网络间干扰的问题。
根据本发明的一个方面，提供了一种无线帧的发送方法。
根据本发明实施例的无线帧的发送方法包括：第一PCP/AP向第二PCP/AP发送指示信息，其中，指示信息用于通知第二PCP/AP在第一PCP/AP的主信道上发送包含网络信令信息的第一无线帧，第一PCP/AP的工作信道分为主信道和辅信道；第二PCP/AP根据指示信息在主信道上发送第一无线帧。
优选地，第二PCP/AP的工作信道为辅信道。
优选地，指示信息为第一PCP/AP在辅信道上向第二PCP/AP发送的预设无线信号，或者，指示信息携带在第一PCP/AP向第二PCP/AP发送的预设无线帧中的预设字段。
优选地，第一无线帧为以下之一：第二PCP/AP在该PCP/AP建立的网络内发送的信标帧；第二PCP/AP在建立的网络内发送的经过简化处理后的信标帧；第二PCP/AP在建立的网络内发送的信令通知帧。
优选地，上述方法还包括：第二PCP/AP在辅信道上发送第二无线帧，通知第二PCP/AP建立的网络内的站点，将上述站点的工作信道由辅信道切换至主信道。
优选地，上述方法还包括：第二PCP/AP在辅信道上发送第二无线帧，通知第二PCP/AP建立的网络内的站点在主信道上接收信标帧，并继续在辅信道上进行A-BFT、ATI以及DTI工作时段。
优选地，第二PCP/AP根据指示信息发送第一无线帧包括：第二PCP/AP仅在主信道上发送信标帧；non-PCP/non-AP站点仅在辅信道上工作，其中，non-PCP/non-AP站点为已经加入建立的网络的站点。
优选地，上述方法还包括：non-PCP/non-AP站点在主信道上监听第二PCP/AP发送的第一无线帧，其中，non-PCP/non-AP站点为待加入第二PCP/AP建立的网络的站点；non-PCP/non-AP站点根据监听到的第一无线帧在辅信道上与第二PCP/AP进行网络加入过程。
根据本发明的另一方面，提供了一种无线帧的发送系统。
根据本发明实施例的无线帧的发送系统包括：第一PCP/AP和第二PCP/AP；第一PCP/AP，设置为向第二PCP/AP发送指示信息，其中，指示信息用于通知第二PCP/AP在第一PCP/AP的主信道上发送包含网络信令信息的第一无线帧，第一PCP/AP的工作信道分为主信道和辅信道；第二PCP/AP，设置为根据指示信息在主信道上发送第一无线帧。
优选地，第二PCP/AP的工作信道为辅信道。
优选地，指示信息为第一PCP/AP在辅信道上向第二PCP/AP发送的预设无线信号，或者，指示信息携带在第一PCP/AP向第二PCP/AP发送的预设无线帧中的预设字段。
优选地，第一无线帧为以下之一：第二PCP/AP在该PCP/AP建立的网络内发送的信标帧；第二PCP/AP在建立的网络内发送的经过简化处理后的信标帧；第二PCP/AP在建立的网络内发送的信令通知帧。
优选地，第二PCP/AP，还设置为在辅信道上发送第二无线帧，通知第二PCP/AP建立的网络内的站点，将上述站点的工作信道由辅信道切换至主信道。
优选地，第二PCP/AP，还设置为在辅信道上发送第二无线帧，通知第二PCP/AP建立的网络内的站点在主信道上接收信标帧，并继续在辅信道上进行A-BFT、ATI以及DTI工作时段。
优选地，上述系统还包括：non-PCP/non-AP站点；第二PCP/AP，还设置为仅在主信道上发送信标帧；non-PCP/non-AP站点，设置为仅在辅信道上工作，其中，non-PCP/non-AP站点为已经加入建立的网络的站点。
优选地，non-PCP/non-AP站点，还设置为在主信道上监听第二PCP/AP发送的第一无线帧，其中，non-PCP/non-AP站点为待加入第二PCP/AP建立的网络的站点；non-PCP/non-AP站点，还设置为根据监听到的第一无线帧在辅信道上与第二PCP/AP进行网络加入过程。
通过本发明实施例，采用第一PCP/AP的工作信道分为主信道和辅信道，第一PCP/AP向第二PCP/AP发送指示信息，该指示信息用于通知第二PCP/AP在第一PCP/AP的主信道上发送包含网络信令信息的第一无线帧；第二PCP/AP根据指示信息在主信道上发送第一无线帧，即在相同区域内使用相同信道的PCP/AP能够通过指示信息相互告知发送无线帧的方式，由此解决了在相关技术中存在多种工作带宽的网络条件下，无法在网络间进行协调以降低网络间干扰的问题，进而能够合理地调度分配网络时频空域资源，减少相互间的干扰，提高资源利用率。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是根据相关技术的EDCA的示意图；
图2是根据本发明实施例的无线帧的发送方法的流程图；
图3是根据本发明优选实施例的3个信道频率位置的示意图；
图4是根据本发明实施例的无线帧的发送系统的结构框图；
图5是根据本发明优选实施例的无线帧的发送系统的结构框图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
图2是根据本发明实施例的无线帧的发送方法的流程图。如图2所示，该方法可以包括以下处理步骤：
步骤S202：第一PCP/AP向第二PCP/AP发送指示信息，其中，指示信息用于通知第二PCP/AP在第一PCP/AP的主信道上发送包含网络信令信息的第一无线帧，第一PCP/AP的工作信道分为主信道和辅信道；
步骤S204：第二PCP/AP根据指示信息在主信道上发送第一无线帧。
在相关技术中存在多种工作带宽的网络条件下，无法在网络间进行协调以降低网络间干扰。采用如图2所示的方法，第一PCP/AP的工作信道可以分为主信道和辅信道，第一PCP/AP向第二PCP/AP发送指示信息，该指示信息用于通知第二PCP/AP在第一PCP/AP的主信道上发送包含网络信令信息的第一无线帧；第二PCP/AP根据指示信息在主信道上发送第一无线帧，即在相同区域内使用相同信道的PCP/AP能够通过指示信息相互告知发送无线帧的方式，由此解决了在相关技术中存在多种工作带宽的网络条件下，无法在网络间进行协调以降低网络间干扰的问题，进而能够合理地调度分配网络时频空域资源，减少相互间的干扰，提高资源利用率。
在优选实施过程中，第二PCP/AP的工作信道为辅信道。
优选地，上述指示信息可以为第一PCP/AP在辅信道上向第二PCP/AP发送的预设无线信号，或者，上述指示信息还可以携带在第一PCP/AP向第二PCP/AP发送的预设无线帧中的预设字段。
优选地，上述第一无线帧可以为但不限于以下之一：
(1)第二PCP/AP在该PCP/AP建立的网络内发送的信标帧；
(2)第二PCP/AP在建立的网络内发送的经过简化处理后的信标帧；
(3)第二PCP/AP在建立的网络内发送的信令通知帧。
优选地，上述方法还可以包括以下操作：
步骤S1：第二PCP/AP在辅信道上发送第二无线帧，通知第二PCP/AP建立的网络内的站点，将上述站点的工作信道由辅信道切换至主信道。
优选地，上述方法还可以包括以下步骤：
步骤S2：第二PCP/AP在辅信道上发送第二无线帧，通知第二PCP/AP建立的网络内的站点在主信道上接收信标帧，并继续在辅信道上进行A-BFT、ATI以及DTI工作时段。
优选地，在步骤S204中，第二PCP/AP根据指示信息发送无线帧可以包括以下操作：
步骤S3：第二PCP/AP仅在主信道上发送信标帧；
步骤S4：non-PCP/non-AP站点仅在辅信道上工作，其中，non-PCP/non-AP站点为已经加入建立的网络的站点。
优选地，上述方法还可以包括以下步骤：
步骤S5：non-PCP/non-AP站点在主信道上监听第二PCP/AP发送的第一无线帧，其中，non-PCP/non-AP站点为待加入第二PCP/AP建立的网络的站点；
步骤S6：non-PCP/non-AP站点根据监听到的第一无线帧在辅信道上与第二PCP/AP进行网络加入过程。
下面将结合优选实施例一至优选实施例六对上述优选实施过程作进一步的描述。
优选实施例一
图3是根据本发明优选实施例的3个信道频率位置的示意图。如图3所示，在同一个区域内，存在3个PCP/AP建立的网络，可以分别称之为PCP1/AP1、PCP2/AP2以及PCP3/AP3，其中，PCP1/AP1、PCP2/AP2工作在信道1上，而PCP3/AP3工作在信道2上。信道1和信道2的带宽均为540MHz，且信道1和信道2相邻，信道1和信道2组合在一起即为信道3，其带宽为1080MHz。
如果在此区域内又出现一个新的PCP/AP，可以称之为PCP4/AP4，需要在信道3上建立一个工作带宽为1080MHz的网络，PCP4/AP4通过在信道1上监听，获知信道1上存在PCP1/AP1和PCP2/AP2分别建立的2个网络；PCP4/AP4通过在信道2上监听，获知信道2上存在PCP3/AP3建立的1个网络，且三个网络的工作带宽均为540MHz。随后PCP4/AP4可以根据随机选择的原则、网络负载轻重情况、信道上的网络数量等原因中至少之一选择信道1或者信道2作为自身工作带宽上的主信道，而将另外一个信道作为辅信道。
假定PCP4/AP4选择信道2作为自身工作的主信道，而将信道1作为辅信道。PCP4/AP4可以将在信道2上发送Beacon帧建立新网络，而在信道1上发送一个无线信号，其中，此无线信号可以采用广播的形式发送，当然也可以是针对PCP1/AP1和PCP2/AP2的多播信号，还可以是分别针对PCP1/AP1和PCP2/AP2的单播无线信号。通过此无线信号指示PCP1/AP1和PCP2/AP2在信道2上发送各自网络的Beacon帧，或者，PCP4/AP4将在信道1上发送一个无线帧的特定字段来指示PCP1/AP1和PCP2/AP2在信道2上发送各自网络的Beacon帧。
优选实施例二
如图3所示，在同一个区域内，存在3个PCP/AP建立的网络，可以分别称之为PCP1/AP1、PCP2/AP2以及PCP3/AP3，其中，PCP1/AP1、PCP2/AP2工作在信道1上，而PCP3/AP3工作在信道2上。信道1和信道2的带宽均为540MHz，且信道1和信道2相邻，信道1和信道2组合在一起即为信道3，其带宽为1080MHz。
如果在此区域内又出现一个新的PCP/AP，可以称之为PCP4/AP4，需要在信道3上建立一个工作带宽为1080MHz的网络，PCP4/AP4通过在信道1上监听，获知信道1上存在PCP1/AP1和PCP2/AP2分别建立的2个网络；PCP4/AP4通过在信道2上监 听，获知信道2上存在PCP3/AP3建立的1个网络，且三个网络的工作带宽均为540MHz。随后PCP4/AP4可以根据随机选择的原则、网络负载轻重情况、信道上的网络数量等原因中至少之一选择信道1或者信道2作为自身工作带宽上的主信道，而将另外一个信道作为辅信道。
假定PCP4/AP4选择信道2作为自身工作的主信道，而将信道1作为辅信道。PCP4/AP4可以将在信道2上发送Beacon帧建立新网络，而在信道1上发送一个无线信号，其中，此无线信号可以采用广播的形式发送，当然也可以是针对PCP1/AP1和PCP2/AP2的多播信号，还可以是分别针对PCP1/AP1和PCP2/AP2的单播无线信号。通过此无线信号指示PCP1/AP1和PCP2/AP2在信道2上发送各自网络的Beacon帧。
PCP1/AP1在接收到PCP4/AP4发送的无线信号后，将在信道2上发送自身网络的Beacon帧；PCP1/AP1在信道1上维持正常的网络操作。
PCP2/AP2在接收到PCP4/AP4发送的无线信号后，将在信道2上发送自身网络的Beacon帧；PCP2/AP2在信道1上维持正常的网络操作。
优选实施例三
如图3所示，在同一个区域内，存在3个PCP/AP建立的网络，可以分别称之为PCP1/AP1、PCP2/AP2以及PCP3/AP3，其中，PCP1/AP1、PCP2/AP2工作在信道1上，而PCP3/AP3工作在信道2上。信道1和信道2的带宽均为540MHz，且信道1和信道2相邻，信道1和信道2组合在一起即为信道3，其带宽为1080MHz。
如果在此区域内又出现一个新的PCP/AP，可以称之为PCP4/AP4，需要在信道3上建立一个工作带宽为1080MHz的网络，PCP4/AP4通过在信道1上监听，获知信道1上存在PCP1/AP1和PCP2/AP2分别建立的2个网络；PCP4/AP4通过在信道2上监听，获知信道2上存在PCP3/AP3建立的1个网络，且三个网络的工作带宽均为540MHz。随后PCP4/AP4可以根据随机选择的原则、网络负载轻重情况、信道上的网络数量等原因中至少之一选择信道1或者信道2作为自身工作带宽上的主信道，而将另外一个信道作为辅信道。
假定PCP4/AP4选择信道2作为自身工作的主信道，而将信道1作为辅信道。PCP4/AP4可以将在信道2上发送Beacon帧建立新网络，而在信道1上发送一个无线信号，其中，此无线信号可以采用广播的形式发送，当然也可以是针对PCP1/AP1和 PCP2/AP2的多播信号，还可以是分别针对PCP1/AP1和PCP2/AP2的单播无线信号。通过此无线信号指示PCP1/AP1和PCP2/AP2在信道2上发送各自网络的Beacon帧。
PCP1/AP1在接收到PCP4/AP4发送的无线信号后，将在信道2上发送自身网络的Beacon帧；PCP1/AP1在信道1上维持正常的网络操作。
PCP2/AP2在接收到PCP4/AP4发送的无线信号后，PCP2/AP2在信道1上向本网络内的non-PCP/non-AP STA发送无线帧，通知本网络内的non-PCP/non-AP STA，本网络将在信道2上运行，non-PCP/non-AP STA只需按照无线帧指示将工作信道切换至信道2即可。
优选实施例四
如图3所示，在同一个区域内，存在3个PCP/AP建立的网络，可以分别称之为PCP1/AP1、PCP2/AP2以及PCP3/AP3，其中，PCP1/AP1、PCP2/AP2工作在信道1上，而PCP3/AP3工作在信道2上。信道1和信道2的带宽均为540MHz，且信道1和信道2相邻，信道1和信道2组合在一起即为信道3，其带宽为1080MHz。
如果在此区域内又出现一个新的PCP/AP，可以称之为PCP4/AP4，需要在信道3上建立一个工作带宽为1080MHz的网络，PCP4/AP4通过在信道1上监听，获知信道1上存在PCP1/AP1和PCP2/AP2分别建立的2个网络；PCP4/AP4通过在信道2上监听，获知信道2上存在PCP3/AP3建立的1个网络，且三个网络的工作带宽均为540MHz。随后PCP4/AP4可以根据随机选择的原则、网络负载轻重情况、信道上的网络数量等原因中至少之一选择信道1或者信道2作为自身工作带宽上的主信道，而将另外一个信道作为辅信道。
假定PCP4/AP4选择信道2作为自身工作的主信道，而将信道1作为辅信道。PCP4/AP4可以将在信道2上发送Beacon帧建立新网络，而在信道1上发送一个无线信号，其中，此无线信号可以采用广播的形式发送，当然也可以是针对PCP1/AP1和PCP2/AP2的多播信号，还可以是分别针对PCP1/AP1和PCP2/AP2的单播无线信号。通过此无线信号指示PCP1/AP1和PCP2/AP2在信道2上发送各自网络的Beacon帧。
PCP1/AP1在接收到PCP4/AP4发送的无线信号后，PCP1/AP1在信道1上向本网络内的non-PCP/non-AP STA发送无线帧，通知本网络内的non-PCP/non-AP STA，本网络的BTI阶段将在信道2上进行。在BTI阶段，PCP1/AP1切换到信道2上发送Beacon帧，non-PCP/non-AP STA切换到信道2上接收Beacon帧。BI中的其他阶段，例如： A-BFT、ATI以及DTI仍将在信道1上进行，PCP1/AP1以及网络中的non-PCP/non-AP STA将切换至信道1上进行工作。
PCP2/AP2在接收到PCP4/AP4发送的无线信号后，PCP2/AP2在信道1上向本网络内的non-PCP/non-AP STA发送无线帧，通知本网络内的non-PCP/non-AP STA，本网络将在信道2上运行，本网络内的non-PCP/non-AP STA只需按照无线帧指示将工作信道切换至信道2即可。
优选实施例五
如图3所示，在同一个区域内，存在3个PCP/AP建立的网络，可以分别称之为PCP1/AP1、PCP2/AP2以及PCP3/AP3，其中，PCP1/AP1、PCP2/AP2工作在信道1上，而PCP3/AP3工作在信道2上。信道1和信道2的带宽均为540MHz，且信道1和信道2相邻，信道1和信道2组合在一起即为信道3，其带宽为1080MHz。
如果在此区域内又出现一个新的PCP/AP，可以称之为PCP4/AP4，需要在信道3上建立一个工作带宽为1080MHz的网络，PCP4/AP4通过在信道1上监听，获知信道1上存在PCP1/AP1和PCP2/AP2分别建立的2个网络；PCP4/AP4通过在信道2上监听，获知信道2上存在PCP3/AP3建立的1个网络，且三个网络的工作带宽均为540MHz。随后PCP4/AP4可以根据随机选择的原则、网络负载轻重情况、信道上的网络数量等原因中至少之一选择信道1或者信道2作为自身工作带宽上的主信道，而将另外一个信道作为辅信道。
假定PCP4/AP4选择信道2作为自身工作的主信道，而将信道1作为辅信道。PCP4/AP4可以将在信道2上发送Beacon帧建立新网络，而在信道1上发送一个无线信号，其中，此无线信号可以采用广播的形式发送，当然也可以是针对PCP1/AP1和PCP2/AP2的多播信号，还可以是分别针对PCP1/AP1和PCP2/AP2的单播无线信号。通过此无线信号指示PCP1/AP1和PCP2/AP2在信道2上发送各自网络的Beacon帧。
PCP1/AP1在接收到PCP4/AP4发送的无线信号后，PCP1/AP1在信道1上向本网络内的non-PCP/non-AP STA发送无线帧，通知本网络内的non-PCP/non-AP STA，PCP1/AP1将在信道1上发送Beacon帧。本网络在信道2上将不存在BTI阶段，本网络内的non-PCP/non-AP STA只需工作在信道2上，无需切换至信道1上接收Beacon帧。Beacon帧中包含的信息将通过信道1在A-BFT或者ATI阶段发送，可以采用Beacon帧发送，亦可以采用其他格式的管理帧或者控制帧发送。
PCP2/AP2在接收到PCP4/AP4发送的无线信号后，PCP2/AP2在信道1上向本网络内的non-PCP/non-AP STA发送无线帧，通知本网络内的non-PCP/non-AP STA，本网络将在信道2上运行，non-PCP/non-AP STA只需按照无线帧指示将工作信道切换至信道2即可。
优选实施例六
如图3所示，在同一个区域内，存在3个PCP/AP建立的网络，可以分别称之为PCP1/AP1、PCP2/AP2以及PCP3/AP3，其中，PCP1/AP1、PCP2/AP2工作在信道1上，而PCP3/AP3工作在信道2上。信道1和信道2的带宽均为540MHz，且信道1和信道2相邻，信道1和信道2组合在一起即为信道3，其带宽为1080MHz。
如果在此区域内又出现一个新的PCP/AP，可以称之为PCP4/AP4，需要在信道3上建立一个工作带宽为1080MHz的网络，PCP4/AP4通过在信道1上监听，获知信道1上存在PCP1/AP1和PCP2/AP2分别建立的2个网络；PCP4/AP4通过在信道2上监听，获知信道2上存在PCP3/AP3建立的1个网络，且三个网络的工作带宽均为540MHz。随后PCP4/AP4可以根据随机选择的原则、网络负载轻重情况、信道上的网络数量等原因中至少之一选择信道1或者信道2作为自身工作带宽上的主信道，而将另外一个信道作为辅信道。
假定PCP4/AP4选择信道2作为自身工作的主信道，而将信道1作为辅信道。PCP4/AP4可以将在信道2上发送Beacon帧建立新网络，而在信道1上发送一个无线信号，其中，此无线信号可以采用广播的形式发送，当然也可以是针对PCP1/AP1和PCP2/AP2的多播信号，还可以是分别针对PCP1/AP1和PCP2/AP2的单播无线信号。通过此无线信号指示PCP1/AP1和PCP2/AP2在信道2上发送各自网络的Beacon帧，或者，PCP4/AP4将在信道1上发送一个无线帧的特定字段来指示PCP1/AP1和PCP2/AP2在信道2上发送各自网络的Beacon帧。
PCP1/AP1在接收到PCP4/AP4发送的无线信号后，PCP1/AP1在信道1上向本网络内的non-PCP/non-AP STA发送无线帧，通知本网络内的non-PCP/non-AP STA，PCP1/AP1将在信道2上发送Beacon帧。本网络在信道1上将不存在BTI阶段，本网络内的non-PCP/non-AP STA只需工作在信道1上，而无需切换至信道2上接收Beacon帧，Beacon帧中包含的信息将通过信道1在A-BFT或者ATI阶段发送，可以采用Beacon帧发送，亦可以采用其他格式的管理帧或者控制帧发送。
当一个未加入PCP1/AP1建立的网络的non-PCP/non-AP STA在加入PCP1/AP1建立的网络之前，只需在信道2上监听Beacon帧，然后在信道1上与PCP1/AP1进行加入网络的无线帧交互。
PCP2/AP2在接收到PCP4/AP4发送的无线信号后，PCP2/AP2在信道1上向本网络内的non-PCP/non-AP STA发送无线帧，通知本网络内的non-PCP/non-AP STA，本网络将在信道2上运行，non-PCP/non-AP STA只需按照无线帧指示将工作信道切换至信道2即可。
图4是根据本发明实施例的无线帧的发送系统的结构框图。如图4所示，该无线帧的发送系统可以包括：第一PCP/AP 10和第二PCP/AP 20；第一PCP/AP 10，设置为向第二PCP/AP发送指示信息，其中，指示信息用于通知第二PCP/AP在第一PCP/AP的主信道上发送包含网络信令信息的第一无线帧，第一PCP/AP的工作信道分为主信道和辅信道；第二PCP/AP 20，设置为根据指示信息在主信道上发送第一无线帧。
采用如图4所示的系统，解决了在相关技术中存在多种工作带宽的网络条件下，无法在网络间进行协调以降低网络间干扰的问题，进而能够合理地调度分配网络时频空域资源，减少相互间的干扰，提高资源利用率。
在优选实施过程中，第二PCP/AP的工作信道为辅信道。
优选地，上述指示信息可以为第一PCP/AP在辅信道上向第二PCP/AP发送的预设无线信号，或者，上述指示信息还可以携带在第一PCP/AP向第二PCP/AP发送的预设无线帧中的预设字段。
优选地，上述第一无线帧可以为但不限于以下之一：
(1)第二PCP/AP在该PCP/AP建立的网络内发送的信标帧；
(2)第二PCP/AP在建立的网络内发送的经过简化处理后的信标帧；
(3)第二PCP/AP在建立的网络内发送的信令通知帧。
优选地，第二PCP/AP 20，还设置为在辅信道上发送第二无线帧，通知第二PCP/AP建立的网络内的站点，将上述站点的工作信道由辅信道切换至主信道。
优选地，第二PCP/AP 20，还设置为在辅信道上发送第二无线帧，通知第二PCP/AP建立的网络内的站点在主信道上接收信标帧，并继续在辅信道上进行A-BFT、ATI以及DTI工作时段。
优选地，如图5所示，上述系统还可以包括：non-PCP/non-AP站点30；第二PCP/AP20，还设置为仅在主信道上发送信标帧；non-PCP/non-AP站点30，设置为仅在辅信道上工作，其中，non-PCP/non-AP站点为已经加入建立的网络的站点。
优选地，non-PCP/non-AP站点30，还设置为在主信道上监听第二PCP/AP发送的第一无线帧，其中，non-PCP/non-AP站点为待加入第二PCP/AP建立的网络的站点；non-PCP/non-AP站点30，还设置为根据监听到的第一无线帧在辅信道上与第二PCP/AP进行网络加入过程。
从以上的描述中，可以看出，上述实施例实现了如下技术效果(需要说明的是这些效果是某些优选实施例可以达到的效果)：采用本发明实施例所提供的技术方案，在相同区域内使用相同信道的PCP/AP能够相互监听各自的信标帧，合理地调度分配网络时频空域资源，减少相互间的干扰，提高资源利用率。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
工业实用性
如上所述，本发明实施例提供的一种无线帧的发送方法及系统具有以下有益效果：在相同区域内使用相同信道的PCP/AP能够相互监听各自的信标帧，合理地调度分配网络时频空域资源，减少相互间的干扰，提高资源利用率。

Claims (16)

  1. 一种无线帧的发送方法，包括：
    第一个人基本服务集控制点PCP/接入点AP向第二PCP/AP发送指示信息，其中，所述指示信息用于通知所述第二PCP/AP在所述第一PCP/AP的主信道上发送包含网络信令信息的第一无线帧，所述第一PCP/AP的工作信道分为主信道和辅信道；
    所述第二PCP/AP根据所述指示信息在所述主信道上发送所述第一无线帧。
  2. 根据权利要求1所述的方法，其中，所述第二PCP/AP的工作信道为所述辅信道，和或所述第二PCP/AP建立的网络内的站点的工作信道为所述辅信道。
  3. 根据权利要求1所述的方法，其中，所述指示信息为所述第一PCP/AP在所述辅信道上向所述第二PCP/AP发送的预设无线信号，或者，所述指示信息携带在所述第一PCP/AP向所述第二PCP/AP发送的预设无线帧中的预设字段。
  4. 根据权利要求1所述的方法，其中，所述第一无线帧为以下之一：
    所述第二PCP/AP在该PCP/AP建立的网络内发送的信标帧；
    所述第二PCP/AP在所述建立的网络内发送的经过简化处理后的信标帧；
    所述第二PCP/AP在所述建立的网络内发送的信令通知帧。
  5. 根据权利要求1所述的方法，其中，所述方法还包括：所述第二PCP/AP在所述辅信道上发送第二无线帧，通知所述第二PCP/AP建立的网络内的站点，将所述站点的工作信道由所述辅信道切换至所述主信道。
  6. 根据权利要求1所述的方法，其中，所述方法还包括：所述第二PCP/AP在所述辅信道上发送第二无线帧，通知所述第二PCP/AP建立的网络内的站点在所述主信道上接收所述信标帧，并继续在所述辅信道上进行关联波束赋形训练A-BFT、通告传输间隔ATI以及数据传输间隔DTI工作时段。
  7. 根据权利要求4所述的方法，其中，所述第二PCP/AP根据所述指示信息发送所述第一无线帧包括：
    所述第二PCP/AP仅在所述主信道上发送所述信标帧；
    非个人基本服务集控制点non-PCP/非接入点non-AP站点仅在所述辅信道上工作，其中，所述non-PCP/non-AP站点为已经加入所述第二PCP/AP建立的网络的站点。
  8. 根据权利要求4所述的方法，其中，所述方法还包括：
    non-PCP/non-AP站点在所述主信道上监听所述第二PCP/AP发送的所述第一无线帧，其中，所述non-PCP/non-AP站点为待加入所述第二PCP/AP建立的网络的站点；
    所述non-PCP/non-AP站点根据监听到的第一无线帧在所述辅信道上与所述第二PCP/AP进行网络加入过程。
  9. 一种无线帧的发送系统，包括：第一个人基本服务集控制点PCP/接入点AP和第二PCP/AP；
    所述第一PCP/AP，设置为向第二PCP/AP发送指示信息，其中，所述指示信息用于通知所述第二PCP/AP在所述第一PCP/AP的主信道上发送包含网络信令信息的第一无线帧，所述第一PCP/AP的工作信道分为主信道和辅信道；
    所述第二PCP/AP，设置为根据所述指示信息在所述主信道上发送所述第一无线帧。
  10. 根据权利要求9所述的系统，其中，所述第二PCP/AP的工作信道为所述辅信道。
  11. 根据权利要求9所述的系统，其中，所述指示信息为所述第一PCP/AP在所述辅信道上向所述第二PCP/AP发送的预设无线信号，或者，所述指示信息携带在所述第一PCP/AP向所述第二PCP/AP发送的预设无线帧中的预设字段。
  12. 根据权利要求9所述的系统，其中，所述第一无线帧为以下之一：
    所述第二PCP/AP在该PCP/AP建立的网络内发送的信标帧；
    所述第二PCP/AP在所述建立的网络内发送的经过简化处理后的信标帧；
    所述第二PCP/AP在所述建立的网络内发送的信令通知帧。
  13. 根据权利要求9所述的系统，其中，所述第二PCP/AP，还设置为在所述辅信道上发送第二无线帧，通知所述第二PCP/AP建立的网络内的站点，将所述站点的工作信道由所述辅信道切换至所述主信道。
  14. 根据权利要求9所述的系统，其中，所述第二PCP/AP，还设置为在所述辅信道上发送第二无线帧，通知所述第二PCP/AP建立的网络内的站点在所述主信道上接收所述信标帧，并继续在所述辅信道上进行关联波束赋形训练A-BFT、通告传输间隔ATI以及数据传输间隔DTI工作时段。
  15. 根据权利要求12所述的系统，其中，所述系统还包括：非个人基本服务集控制点non-PCP/非接入点non-AP站点；
    所述第二PCP/AP，还设置为仅在所述主信道上发送所述信标帧；
    所述non-PCP/non-AP站点，设置为仅在所述辅信道上工作，其中，所述non-PCP/non-AP站点为已经加入所述建立的网络的站点。
  16. 根据权利要求12所述的系统，其中，
    non-PCP/non-AP站点，还设置为在所述主信道上监听所述第二PCP/AP发送的所述第一无线帧，其中，所述non-PCP/non-AP站点为待加入所述第二PCP/AP建立的网络的站点；
    所述non-PCP/non-AP站点，还设置为根据监听到的第一无线帧在所述辅信道上与所述第二PCP/AP进行网络加入过程。
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