WO2018000932A1 - Transmission method, device and station, and computer storage medium - Google Patents

Transmission method, device and station, and computer storage medium Download PDF

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Publication number
WO2018000932A1
WO2018000932A1 PCT/CN2017/082771 CN2017082771W WO2018000932A1 WO 2018000932 A1 WO2018000932 A1 WO 2018000932A1 CN 2017082771 W CN2017082771 W CN 2017082771W WO 2018000932 A1 WO2018000932 A1 WO 2018000932A1
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WIPO (PCT)
Prior art keywords
preamble
transmission
idle
primary channel
channel bandwidth
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PCT/CN2017/082771
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French (fr)
Chinese (zh)
Inventor
韩志强
邢卫民
吕开颖
孙波
李楠
杨丹
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中兴通讯股份有限公司
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Publication of WO2018000932A1 publication Critical patent/WO2018000932A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the present invention relates to wireless communication technologies, and in particular, to a transmission method and apparatus, a station, and a computer storage medium in a wireless local area network.
  • WLAN Wireless Local Area Networks
  • the deployment of WLAN networks is increasingly dense, and the network load is increasing.
  • the coverage of network coverage becomes more serious.
  • the efficiency of the network will show a significant downward trend, and simply increasing the rate will not solve the problem. Therefore, the IEEE Standards Organization has established a related task force to address the WLAN network efficiency problem.
  • the technology of interference avoidance and efficiency improvement in the case of network dense deployment has become a hot topic of discussion.
  • an access point (AP, Access Point) and multiple stations (STA, Station) associated with the AP form a basic service set (BSS).
  • BSS basic service set
  • Multiple BSSs work in the same frequency band, covering partial overlap (OBSS, Overlapping BSS), as shown in Figure 1.
  • the bandwidth of a radio frame transmission is channelized.
  • 802.11n/ac is channelized in 20MHz as a basic unit, the station can transmit at an integer multiple of 20MHz.
  • 802.11ah channelization is based on 1Mhz and 2MHz. This basic bandwidth is made into the basic channel bandwidth.
  • the common channel operated by all stations of the basic service set is called the primary channel (primary 20 MHz), taking 160 Mhz as an example, and the channelization is as shown in 2.
  • 802.11 supports two methods of channel idle determination for physical carrier detection and virtual carrier detection.
  • Physical carrier detection refers to the Clear Channel Assessment (CCA) channel detection technology.
  • CCA Clear Channel Assessment
  • the associated station detects whether the channel is busy or idle by detecting the signal strength on the medium. Physical carrier detection is detected with the basic channel bandwidth.
  • the virtual carrier detection refers to a third-party associated station other than the communication parties.
  • the local network allocation vector (NAV, Network Allocation Vector) is set according to the Duration field in the frame. The value, when the NAV is not zero, considers the channel to be busy and does not perform contention transmission.
  • the capture of the physical layer header, the NAV setting, and the reception of the beacon frame are all related to the primary channel. Physical carrier detection and virtual carrier detection are collectively referred to herein as carrier detection.
  • the technology under discussion includes a site supporting the new standard to add a BSS network identifier (BSS Color), a site identifier (STA ID), and up and down in the physical layer header of the transmitted new format radio frame.
  • BSS Color BSS network identifier
  • STA ID site identifier
  • Control information such as a line indication (UL/DL flag), a spatial multiplexing parameter, and a reserved transmission duration, so that the station that detects the radio frame can determine the subsequent radio frame load or the basic condition of the transmission according to the control information in advance.
  • UL/DL flag line indication
  • a spatial multiplexing parameter a reserved transmission duration
  • multi-user parallel transmission technology is also defined, including multi-user MIMO (Multi-User MIMO) technology, orthogonal frequency division multiple access (OFDMA, Orthogonal Frequency). Division Multiple Access) technology.
  • MU-MIMO utilizes spatial multiplexing techniques to increase time and frequency utilization.
  • OFDMA orthogonal frequency division multiple access
  • OFDMA Orthogonal Frequency
  • MU-MIMO utilizes spatial multiplexing techniques to increase time and frequency utilization.
  • OFDMA technology enables multiple sites to be frequency-multiplexed over the entire bandwidth, which can more effectively utilize the results of inter-site frequency selection to improve spectrum utilization.
  • Uplink multi-user (UL MU) transmission requires an AP to trigger, For example, a separate trigger frame may be sent to trigger the implementation, or the implementation may be triggered by carrying a trigger information field in the radio frame.
  • the AP sends a Trigger Frame to trigger multiple users to transmit at the same time.
  • the AP will schedule the resource unit (RU, Resource Unit) sent by the user in the trigger frame. As long as the AP successfully receives the response from any one of the users, the AP will receive the response. It is considered that this frame exchange is successful, and the AP can perform subsequent frame transmission.
  • the AP also indicates whether the station needs to perform CS detection in the trigger frame. If CS detection is required, the NAV of the station is not 0 or the 20 MHz physical carrier detection result corresponding to the allocated RU is busy, and the station cannot transmit. However, if the CS detection result of the user assigned to the primary channel is that the station cannot transmit, then the primary channel has no signal at this time.
  • the stations of other BSSs that have not received the trigger can contend for the channel to transmit, The next time the AP transmits interference on the primary channel, as shown in Figure 2.
  • AP1 and STA1, STA2 and STA3 form one BSS
  • AP2 and STA4 form one BSS
  • two BSSs work in the same frequency band, and the main channels are aligned. There may be other sites in the two BSSs, which are not listed here.
  • AP1 contends to the channel to send a trigger frame, and schedules STA1, STA2, and STA3 to transmit.
  • the RU corresponding to STA1 and STA2 is on the primary channel
  • the RU corresponding to STA3 is on the secondary channel.
  • STA4 and AP2 cannot receive the trigger frame sent by AP1, and STA1 and STA2 are hidden terminals, STA4 and AP2 cannot receive the signal on the primary channel for a long time, then the station will trigger the competition and interfere with the subsequent scheduled transmission of AP1. .
  • an embodiment of the present invention provides a transmission method and apparatus, a station, and a computer storage medium.
  • the first station indicates, in the transmitted radio frame, a transmission form when the second station does not meet the preset condition on the scheduled resource; wherein the transmission form includes at least one of the following:
  • the first preamble is transmitted within a continuous preset basic channel bandwidth including the primary channel.
  • the scheduled resource is an uplink random access resource based on a trigger frame or a determined resource based on a trigger frame.
  • the failure to satisfy the preset condition on the scheduled resource means that at least one of the following conditions is not met on the scheduled resource:
  • the result of carrier detection is idle
  • the transmission power meets the requirements of the first site
  • the random access backoff is zero;
  • the method further includes: the first station indicates whether to adopt the transmission form or a specific transmission format by using one or more bits in the radio frame.
  • the first station indicates, by using one bit in the radio frame, whether the transmission form or the specific transmission format is adopted, including:
  • the first preamble is not allowed to be transmitted by the 1 bit indication
  • the first preamble is allowed to be transmitted by the 1 bit; wherein the transmission mode for allowing the transmission of the first preamble is one of: transmitting the first channel on the primary channel
  • the preamble transmits the first preamble in the idle basic channel bandwidth, transmits the first preamble in the idle basic channel bandwidth, and transmits the first preamble in the continuous preset basic channel bandwidth including the main channel in the case that the primary channel is idle.
  • the first station indicates, by using multiple bits in the radio frame, whether to adopt the transmission form or a specific transmission format, including:
  • the bandwidth occupied by the continuous preset basic channel bandwidth including the primary channel is one of the following: main 20 MHz, main 40 MHz, main 80 MHz, and 160 MHz.
  • the first preamble is the same preamble that multiple users simultaneously transmit in the same frequency band.
  • the first preamble includes: a traditional short training domain, a traditional long training domain, a traditional signaling domain, a repeated traditional signaling domain, and an efficient signaling domain.
  • the first preamble is repeatedly transmitted in units of a basic channel bandwidth.
  • the radio frame sent by the first station carries information that needs to be filled in by the first preamble.
  • the transmission form is determined according to the indication of the first site or the agreement with the first site; wherein the transmission form includes at least one of the following:
  • the first preamble is transmitted within a continuous preset basic channel bandwidth including the primary channel.
  • the failure to satisfy the preset condition on the scheduled resource means that at least one of the following conditions is not met on the scheduled resource:
  • the result of carrier detection is idle
  • the transmission power meets the requirements of the first site
  • the random access backoff is zero;
  • the bandwidth occupied by the continuous preset basic channel bandwidth including the primary channel is one of the following: main 20 MHz, main 40 MHz, main 80 MHz, and 160 MHz.
  • the first preamble includes: a traditional short training domain, a traditional long training domain, a traditional signaling domain, a repeated traditional signaling domain, and an efficient signaling domain.
  • the second site determines the transmission format according to the agreement with the first site, including:
  • the second station determines a transmission form according to a predetermined transmission policy, where the transmission form in the predetermined transmission policy includes at least one of: transmitting a first preamble on the primary channel, transmitting a first preamble on the idle basic channel bandwidth, When the primary channel is idle, the first preamble is transmitted in the idle basic channel bandwidth, and the first preamble is transmitted in the continuous preset basic channel bandwidth including the primary channel.
  • the scheduled resource is an uplink random access resource based on a trigger frame or a determined resource based on a trigger frame.
  • the determining resource based on the trigger frame is: indicating a resource allocated to a specific site.
  • the method when the transmission form is to transmit the first preamble on the primary channel, the method further includes:
  • the second station Before the primary channel transmits the first preamble, the second station performs carrier detection on the primary channel;
  • the second station transmits the first preamble on the primary channel
  • the second station cannot transmit the first preamble on the primary channel.
  • the transmitting in a continuous preset basic channel bandwidth including a primary channel includes:
  • the second station Before transmitting the first preamble in the continuous preset basic channel bandwidth including the primary channel, the second station performs carrier detection on the continuous preset basic channel bandwidth including the primary channel;
  • the second station transmits the first preamble on the continuous preset basic channel bandwidth including the primary channel;
  • the second station When the carrier detection result of the partial basic channel bandwidth is busy, the second station does not transmit the first preamble on the continuous preset basic channel bandwidth including the primary channel.
  • the method when the transmission form is to transmit the first preamble in the idle basic channel bandwidth, or to transmit the first preamble in the idle basic channel bandwidth in the case that the primary channel is idle, the method further includes:
  • the second station indicates a basic channel bandwidth state list in a parameter passed by a Medium Access Control (MAC) entity to a physical layer (Physical Layer) entity.
  • MAC Medium Access Control
  • Physical Layer Physical Layer
  • each basic channel bandwidth uses 1 bit to indicate whether the corresponding basic channel bandwidth is allowed to be transmitted.
  • the second station when the transmission form is to transmit the first preamble on the primary channel, or to transmit the first preamble in the continuous preset basic channel bandwidth including the primary channel, the second station is in the MAC entity to the PHY entity.
  • the transmitted parameter indicates the bandwidth size information occupied by the first preamble.
  • the PHY entity generates a first preamble according to the indication of the MAC entity, and transmits the first preamble in the basic channel bandwidth state list as a basic channel bandwidth that is allowed to be transmitted.
  • the method further includes:
  • the transmission mode when the second site does not meet the preset condition on the scheduled resource is negotiated.
  • an indication unit configured to indicate, in the sent radio frame, a transmission form when the second station does not meet the preset condition on the scheduled resource; wherein the transmission form includes at least one of the following:
  • the first preamble is transmitted within a continuous preset basic channel bandwidth including the primary channel.
  • the failure to satisfy the preset condition on the scheduled resource means that at least one of the following conditions is not met on the scheduled resource:
  • the result of carrier detection is idle
  • the transmission power meets the requirements of the first site
  • the random access backoff is zero;
  • the first station indicates whether to adopt the transmission form or a specific transmission format by using 1 bit or multiple bits in the radio frame.
  • the first preamble when the 1 bit is the first value, the first preamble is not allowed to be transmitted by the 1 bit indication;
  • the first preamble is allowed to be transmitted by the 1 bit; wherein the transmission mode for allowing the transmission of the first preamble is one of: transmitting the first channel on the primary channel
  • the preamble transmits the first preamble in the idle basic channel bandwidth, transmits the first preamble in the idle basic channel bandwidth, and transmits the first preamble in the continuous preset basic channel bandwidth including the main channel in the case that the primary channel is idle.
  • the first preamble includes: a traditional short training domain, a traditional long training domain, Traditional signaling domain, repeated traditional signaling domain, and efficient signaling domain.
  • a transmission form determining unit configured to: when the second site does not meet the preset condition on the scheduled resource, determine the transmission form according to the indication of the first site or the agreement with the first site; wherein the transmission form includes at least One of the following:
  • the first preamble is transmitted within a continuous preset basic channel bandwidth including the primary channel.
  • the failure to satisfy the preset condition on the scheduled resource means that at least one of the following conditions is not met on the scheduled resource:
  • the result of carrier detection is idle
  • the transmission power meets the requirements of the first site
  • the random access backoff is zero;
  • the first preamble includes: a traditional short training domain, a traditional long training domain, a traditional signaling domain, a repeated traditional signaling domain, and an efficient signaling domain.
  • the device when the first preamble is transmitted on the primary channel, the device further includes:
  • a detecting unit configured to perform carrier detection on the primary channel before the primary channel transmits the first preamble
  • the second station transmits the first preamble on the primary channel
  • the second station cannot transmit the first on the primary channel. Leading.
  • the device further includes:
  • a detecting unit configured to perform carrier detection on the continuous preset basic channel bandwidth including the primary channel before transmitting the first preamble in the continuous preset basic channel bandwidth including the primary channel;
  • the apparatus when the transmission form is to transmit the first preamble in the idle basic channel bandwidth, or in the case that the primary channel is idle, when the first basic preamble is transmitted in the idle basic channel bandwidth, the apparatus further includes:
  • an indication unit configured to indicate a basic channel bandwidth status list in a parameter that the MAC entity communicates to the PHY entity.
  • each basic channel bandwidth uses 1 bit to indicate whether the corresponding basic channel bandwidth is allowed to be transmitted.
  • the PHY entity generates a first preamble according to the indication of the MAC entity, and transmits the first preamble in the basic channel bandwidth state list as a basic channel bandwidth that is allowed to be transmitted.
  • the station provided by the embodiment of the present invention includes any of the foregoing transmission devices.
  • the computer storage medium provided by the embodiment of the present invention stores a computer program configured to execute the foregoing transmission method.
  • the first station indicates, in the transmitted radio frame, a transmission form when the second station does not meet the preset condition on the scheduled resource, where the transmission form includes at least one of the following:
  • the primary channel transmits the first preamble; in the idle basic channel bandwidth transmission a preamble; transmitting a first preamble in an idle basic channel bandwidth if the primary channel is idle; transmitting a first preamble in a continuous preset basic channel bandwidth including the primary channel.
  • Figure 1 is a schematic diagram of OBSS
  • 2 is a schematic diagram of channelization of 160 MHz
  • FIG. 3 is a schematic diagram of a collision in a dense scene according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of resource allocation at 80 MHz according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart 1 of a transmission method according to an embodiment of the present invention.
  • FIG. 6 is a second schematic flowchart of a transmission method according to an embodiment of the present invention.
  • FIG. 7 is a first schematic structural diagram of a transmission device according to an embodiment of the present invention.
  • FIG. 8 is a second schematic structural diagram of a transmission apparatus according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of STA1 and STA2 transmitting on a scheduled primary channel, STA3 being unable to transmit on a scheduled secondary channel, and STA3 transmitting a first preamble on a primary channel according to an embodiment of the present invention
  • FIG. 10 is a schematic diagram of a first preamble according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of STA1 and STA2 failing to transmit on a scheduled primary channel, STA3 in a scheduled secondary channel cannot be transmitted, and STA3 transmitting a first preamble on a primary channel according to an embodiment of the present invention
  • FIG. 12 is a schematic diagram of transmission only on a primary channel when not transmitted on a scheduled RU according to an embodiment of the present invention
  • FIG. 13 is a schematic diagram of an embodiment of the present invention, when 80 MHz is not transmitted on a scheduled RU, A schematic diagram of transmitting a first preamble in an idle basic channel bandwidth;
  • FIG. 14 is a schematic diagram of transmitting a first preamble in an idle basic channel bandwidth in a case where the primary channel is idle when the primary channel is idle according to an embodiment of the present invention
  • FIG. 15 is a schematic diagram of transmitting a first preamble in a continuous preset basic channel bandwidth including a primary channel when the scheduled RU cannot be transmitted in the 80 MHz case according to the embodiment of the present invention.
  • FIG. 5 is a schematic flowchart 1 of a transmission method according to an embodiment of the present invention. As shown in FIG. 5, the method includes:
  • Step 501 The first station indicates, in the transmitted radio frame, a transmission form when the second station does not meet the preset condition on the scheduled resource.
  • the transmission form includes at least one of the following:
  • the first preamble is transmitted within a continuous preset basic channel bandwidth including the primary channel.
  • the transmission form further includes not allowing transmission of the first preamble.
  • the scheduled resource is an uplink random access resource based on a trigger frame or a determined resource based on a trigger frame.
  • the preset condition is not met on the scheduled resource, that is, the preset condition is not met on the scheduled resource, that is, at least one of the following conditions is not met on the scheduled resource:
  • the result of carrier detection is idle
  • the transmission power meets the requirements of the first site
  • the random access backoff is zero;
  • the first station indicates whether to adopt the transmission form or a specific transmission format by using 1 bit or multiple bits in the radio frame.
  • the first station indicates, by using 1 bit in the radio frame, whether the transmission form or the specific transmission format is adopted, including:
  • the first preamble is not allowed to be transmitted by the 1 bit indication
  • the first preamble is allowed to be transmitted by the 1 bit; wherein the transmission mode for allowing the transmission of the first preamble is one of: transmitting the first channel on the primary channel
  • the preamble transmits the first preamble in the idle basic channel bandwidth, transmits the first preamble in the idle basic channel bandwidth, and transmits the first preamble in the continuous preset basic channel bandwidth including the main channel in the case that the primary channel is idle.
  • the first station indicates, by using multiple bits in the radio frame, whether to adopt the transmission form or a specific transmission format, including:
  • the bandwidth occupied by the continuous preset basic channel bandwidth including the primary channel is one of the following: main 20 MHz, main 40 MHz, main 80 MHz, and 160 MHz.
  • the first preamble is the same preamble that multiple users simultaneously transmit in the same frequency band.
  • the first preamble includes: a traditional short training domain, a traditional long training domain, a traditional signaling domain, a repeated traditional signaling domain, and an efficient signaling domain.
  • the first preamble is repeatedly transmitted in units of a basic channel bandwidth.
  • the radio frame sent by the first station carries information that needs to be filled in by the first preamble.
  • FIG. 6 is a schematic flowchart 2 of a transmission method according to an embodiment of the present invention. As shown in FIG. 6, the method includes:
  • Step 601 When the second site does not meet the preset condition on the scheduled resource, determine the transmission format according to the indication of the first site or the agreement with the first site.
  • the transmission form includes at least one of the following:
  • the first preamble is transmitted within a continuous preset basic channel bandwidth including the primary channel.
  • the transmission form further includes not allowing transmission of the first preamble.
  • the failure to satisfy the preset condition on the scheduled resource means that at least one of the following conditions is not met on the scheduled resource:
  • the result of carrier detection is idle
  • the transmission power meets the requirements of the first site
  • the random access backoff is zero;
  • the bandwidth occupied by the continuous preset basic channel bandwidth including the primary channel is one of the following: main 20 MHz, main 40 MHz, main 80 MHz, and 160 MHz.
  • the first preamble includes: a traditional short training domain, a traditional long training domain, a traditional signaling domain, a repeated traditional signaling domain, and an efficient signaling domain.
  • the second site determines the transmission format according to the agreement with the first site, including:
  • the second station determines a transmission form according to a predetermined transmission policy, where the transmission form in the predetermined transmission policy includes at least one of: disallowing transmission of the first preamble, transmission of the first preamble on the primary channel, and idle of the basic channel
  • the bandwidth transmits the first preamble, in the case that the primary channel is idle, transmits the first preamble in the idle basic channel bandwidth, and transmits the first preamble in the continuous preset basic channel bandwidth including the primary channel.
  • the scheduled resource is an uplink random access resource based on a trigger frame or a determined resource based on a trigger frame.
  • the determining resource based on the trigger frame is: indicating a resource allocated to a specific site.
  • the method further includes:
  • the second station Before the primary channel transmits the first preamble, the second station performs carrier detection on the primary channel;
  • the second station transmits the first preamble on the primary channel
  • the second station cannot transmit the first preamble on the primary channel.
  • the transmitting the first preamble in a continuous preset basic channel bandwidth including a primary channel includes:
  • the second station Before transmitting the first preamble in the continuous preset basic channel bandwidth including the primary channel, the second station performs carrier detection on the continuous preset basic channel bandwidth including the primary channel;
  • the second station transmits the first preamble on the continuous preset basic channel bandwidth including the primary channel;
  • the second station When the carrier detection result of the partial basic channel bandwidth is busy, the second station does not transmit the first preamble on the continuous preset basic channel bandwidth including the primary channel.
  • the method when the transmission form is the first transmission in the idle basic channel bandwidth
  • the preamble or in the case that the primary channel is idle, when the idle primary channel bandwidth transmits the first preamble, the method further includes:
  • the second station indicates a list of basic channel bandwidth states in parameters passed by the MAC entity to the PHY entity.
  • each basic channel bandwidth uses 1 bit to indicate whether the corresponding basic channel bandwidth is allowed to be transmitted.
  • the second station when the transmission form is to transmit the first preamble on the primary channel, or to transmit the first preamble in the continuous preset basic channel bandwidth including the primary channel, the second station is in the medium access control MAC entity.
  • the bandwidth size information occupied by the first preamble is indicated in the parameter passed to the physical PHY entity.
  • the PHY entity generates a first preamble according to the indication of the MAC entity, and transmits the first preamble in the basic channel bandwidth state list as a basic channel bandwidth that is allowed to be transmitted.
  • the method further includes:
  • the negotiation determines whether the transmission mode when the second site does not meet the preset condition on the scheduled resource is supported.
  • FIG. 7 is a first schematic structural diagram of a transmission device according to an embodiment of the present invention. As shown in FIG. 7, the device includes:
  • the indicating unit 71 is configured to indicate, in the sent radio frame, a transmission form when the second station does not meet the preset condition on the scheduled resource, where the transmission form includes at least one of the following:
  • the first preamble is transmitted within a continuous preset basic channel bandwidth including the primary channel.
  • the transmission form further includes not allowing transmission of the first preamble.
  • the failure to satisfy the preset condition on the scheduled resource means that at least one of the following conditions is not met on the scheduled resource:
  • the result of carrier detection is idle
  • the transmission power meets the requirements of the first site
  • the random access backoff is zero;
  • the first station indicates whether to adopt the transmission form or a specific transmission form by using 1 bit or multiple bits in the radio frame.
  • the first preamble is not allowed to be transmitted by the 1 bit indication
  • the first preamble is allowed to be transmitted by the 1 bit; wherein the transmission mode for allowing the transmission of the first preamble is one of: transmitting the first channel on the primary channel
  • the preamble transmits the first preamble in the idle basic channel bandwidth, transmits the first preamble in the idle basic channel bandwidth, and transmits the first preamble in the continuous preset basic channel bandwidth including the main channel in the case that the primary channel is idle.
  • the first preamble is the same preamble that multiple users simultaneously transmit in the same frequency band.
  • the first preamble includes: a traditional short training domain, a traditional long training domain, a traditional signaling domain, a repeated traditional signaling domain, and an efficient signaling domain.
  • the first preamble is repeatedly transmitted in units of a basic channel bandwidth.
  • the wireless frame that is sent carries information that needs to be filled in by the first preamble.
  • each unit in the transmission device may be implemented by a central processing unit (CPU) or a microprocessor (MPU, Micro Processor Unit) or a digital device located in the transmission device.
  • CPU central processing unit
  • MPU Micro Processor Unit
  • DSP Digital Signal Processor
  • FPGA Field Programmable Gate Array
  • FIG. 8 is a second schematic structural diagram of a transmission apparatus according to an embodiment of the present invention. As shown in FIG. 8, the apparatus includes:
  • the transmission form determining unit 81 is configured to: when the second site does not meet the preset condition on the scheduled resource, determine the transmission form according to the indication of the first site or the agreement with the first site; wherein the transmission form is at least Includes one of the following:
  • the first preamble is transmitted within a continuous preset basic channel bandwidth including the primary channel.
  • the transmission form further includes not allowing transmission of the first preamble.
  • the failure to satisfy the preset condition on the scheduled resource means that at least one of the following conditions is not met on the scheduled resource:
  • the result of carrier detection is idle
  • the transmission power meets the requirements of the first site
  • the random access backoff is zero;
  • the first preamble includes: a traditional short training domain, a traditional long training domain, a traditional signaling domain, and a heavy Complex traditional signaling domain, efficient signaling domain.
  • the device when the transmission form is to transmit the first preamble on the primary channel, the device further includes:
  • the detecting unit 82 is configured to perform carrier detection on the primary channel before the primary channel transmits the first preamble;
  • the second station transmits the first preamble on the primary channel
  • the second station cannot transmit the first preamble on the primary channel.
  • the signaling carried by the first preamble is indicated by a radio frame sent by the first station.
  • the scheduled resource is an uplink random access resource based on a trigger frame or a determined resource based on a trigger frame.
  • the determining resource based on the trigger frame is: indicating a resource allocated to a specific site.
  • the device also includes:
  • the detecting unit 82 is configured to perform carrier detection on the continuous preset basic channel bandwidth including the primary channel before transmitting the first preamble in the continuous preset basic channel bandwidth including the primary channel;
  • the apparatus further includes:
  • the indicating unit 83 is configured to indicate the basic in the parameter passed by the MAC entity to the PHY entity A list of channel bandwidth states.
  • each basic channel bandwidth uses 1 bit to indicate whether the corresponding basic channel bandwidth is allowed to be transmitted.
  • the PHY entity generates a first preamble according to the indication of the MAC entity, and transmits the first preamble in the basic channel band bandwidth status indication as a basic channel bandwidth allowed to be transmitted.
  • the functions implemented by the various units in the transmission device may be implemented by a CPU, an MPU, or a DSP, or an FPGA or the like located in the transmission device.
  • the embodiment of the present invention further provides a station, which includes the transmission device shown in FIG. 7 or the transmission device shown in FIG. 8.
  • AP1 and STA1, STA2 and STA3 form one BSS
  • AP2 and STA4 form one BSS
  • two BSSs work in the same frequency band
  • the working bandwidth is 40MHz
  • the main channel main 20MHz
  • AP1 contends to the channel to send a trigger frame, and schedules STA1, STA2, and STA3 to transmit.
  • the RU corresponding to STA1 and STA2 is on the primary channel
  • the RU corresponding to STA3 is on the secondary channel (secondary 20 MHz).
  • the AP uses 1 bit in the transmitted trigger frame to indicate whether the station allows the first preamble to be transmitted on the primary channel when the allocated RU is unable to transmit.
  • the 1 bit is named PREAMBLE_ALLOWED.
  • the AP sends a trigger frame and sets PREAMBLE_ALLOWED to 1, indicating that the primary channel can be allowed when the station does not meet the preset condition on the assigned RU.
  • the first preamble is transmitted.
  • the STA3 performs physical carrier detection and virtual carrier detection in the interframe space (SIFS) between the trigger frame and the uplink response frame, wherein the physical carrier detection is the energy detection performed, and the energy detection threshold for determining the busy state of the channel may be the system preset value. It can be the value negotiated with the AP or the value broadcast by the AP.
  • SIFS interframe space
  • STA3 performs carrier detection on the RU that the AP allocates to itself. If the carrier detection result is busy, STA3 cannot transmit on the RU allocated by the AP to itself. At this time, STA3 knows that the AP allows itself to be allocated through the signaling indication of the AP. When the resources cannot be transmitted, they can be transmitted on the primary channel. The STA3 transmits the first preamble on the primary channel, where the first preamble and the first preamble transmitted by STA1 and STA2 on the primary channel are exactly the same, and the occupied bandwidth is the same, and the transmission time is the same.
  • the first preamble includes a traditional short training domain (L-STF), a traditional long training domain (L-LTF), a traditional signaling domain (L-SIG), and a repeated traditional signaling domain (Repeat-L).
  • L-STF traditional short training domain
  • L-LTF traditional long training domain
  • L-SIG traditional signaling domain
  • Repeat-L repeated traditional signaling domain
  • -SIG High Efficiency Signaling Domain
  • the first preamble is transmitted over the entire bandwidth of the primary channel.
  • the result of the carrier detection on the STA allocated by the STA to the AP is idle, but the power that the STA3 can transmit does not meet the requirements of the AP and cannot be transmitted.
  • STA3 knows through the signaling indication of the AP that the AP allows itself to transmit on the primary channel when the allocated resources cannot be transmitted.
  • the STA3 can also check the carrier detection result of the primary channel before sending the first preamble. If the physical carrier detection and the virtual carrier detection result of the primary channel are the channel idle, the STA3 sends the first preamble on the primary channel. Otherwise, STA3 does not transmit the first preamble on the primary channel.
  • STA1 and STA2 also need to perform carrier detection before the primary channel is transmitted. If the result of the carrier detection is idle, then STA1 and STA2 transmit the first preamble on the primary channel, and then STA1 and STA2 transmit the second preamble and data portion on the corresponding RU.
  • the resource corresponding to the second preamble and the data part is a resource allocated by the AP to the user.
  • the second preamble includes a high efficiency short training field (HE-STF) and a high efficiency long sequence field (HE-LTF), as shown in FIG.
  • HE-STF high efficiency short training field
  • HE-LTF high efficiency long sequence field
  • STA1 and STA2 also need to perform carrier detection before the primary channel is transmitted. If the result of the carrier detection is busy, STA1 and STA2 do not transmit on the primary channel, as shown in FIG.
  • the AP and the STA1, the STA2, and the STA3 can perform the capability negotiation in the process of the association.
  • the STA1, the STA2, and the STA3 notify the AP whether the AP does not satisfy the preset condition, that is, the transmission mode when the AP cannot be sent.
  • the primary channel sends the first preamble.
  • the STA4 receives the first preamble sent by the STA3 on the primary channel, and receives the correct, and can terminate the reception in advance, and update the NAV according to the channel reservation information carried in the first preamble. If the reception is not terminated, the subsequent portion is continued to be received, but since there is no corresponding data portion, an end primitive of the reception error is generated, and the NAV is updated according to the channel reservation information of the channel in the first preamble. In this way, the channel around STA3 is protected, and the next time AP1 schedules the RU to STA3, it avoids interference from STA4.
  • AP1 and STA1, STA2 and STA3 form a BSS
  • AP2 and STA4 form a BSS, as shown in Figure 2.
  • the two BSSs operate in the same frequency band, the working bandwidth is 80 MHz, the primary channel is aligned, and the primary channel is the basic channel unit with the smallest channel number. There may be other sites in the two BSSs, which are not listed here.
  • AP1 contends to the channel to send a trigger frame, and schedules STA1, STA2, and STA3 to transmit.
  • the RU corresponding to STA1 is on the primary channel
  • the RU corresponding to STA2 is on the secondary channel
  • the RU corresponding to STA3 is on one of the 20 MHz channels of the secondary 40 MHz, as shown in FIG. 4 .
  • the AP indicates one of the transmittable modes by one bit in the transmitted trigger frame, and the meaning of the representation is: a state of 1 bit (such as this bit is set to 1), indicating that the first transmission is allowed to be transmitted using one of the following transmission modes.
  • Preamble transmitting a first preamble on the primary channel; transmitting a first preamble in an idle basic channel bandwidth; transmitting a first preamble in an idle basic channel bandwidth if the primary channel is idle; and continuously pre-establishing a basic channel in the primary channel including the primary channel
  • the first preamble is transmitted within the bandwidth.
  • Another state of 1 bit (such as this bit is set to 0) means that the first preamble is not allowed to be transmitted.
  • the indication is to allow the first preamble to be transmitted on the primary channel when it is judged that the transmission cannot be performed on the assigned RU.
  • the STA2 performs physical carrier detection and virtual carrier detection in the interframe space (SIFS) between the trigger frame and the uplink response frame, wherein the physical carrier detection is performed energy detection, and the energy detection threshold for determining the busy state of the channel may be a system preset value. It can be the value negotiated with the AP or the value broadcast by the AP.
  • SIFS interframe space
  • STA2 transmits data in the allocated RU.
  • the channel is busy, and STA2 cannot transmit on the RU that the AP allocates to itself. If the STA2 carrier detection result is idle, but the transmission power does not meet the requirements of the AP, STA2 is allocated to the AR by the AP. It is also not possible to transfer. At this time, STA2 knows through the signaling indication of the AP that the AP allows itself to transmit on the primary channel when the AP assigned to the AP cannot transmit. STA2 transmits a first preamble on the primary channel, where the first preamble includes a traditional short training domain, a traditional long training domain, a traditional signaling domain, a repeated conventional signaling domain, and an efficient signaling domain, as shown in FIG.
  • the first preamble is transmitted over the entire bandwidth of the primary channel.
  • the STA2 can also check the carrier detection result of the primary channel before sending the first preamble. If the physical carrier detection and the virtual carrier detection result of the primary channel are the channel idle, the STA2 sends the first preamble on the primary channel. Otherwise, STA2 does not send any signal on the primary channel.
  • the result of STA3 carrier detection is that the channel is busy or the transmission power does not meet the requirements of the AP. STA3 cannot transmit on the RU allocated by the AP to itself. At this time, STA3 can transmit the first preamble on the primary channel, where the first preamble includes the traditional short training domain, the traditional long training domain, the traditional signaling domain, and the repeated traditional letter.
  • the domain, the efficient signaling domain, is shown in Figure 10. The first preamble is transmitted over the entire bandwidth of the primary channel.
  • STA3 checks the carrier detection result of the primary channel before transmitting the first preamble, and if the carrier detection result of the primary channel is idle, STA3 sends the first preamble on the primary channel. Otherwise, STA3 does not send any signal on the primary channel.
  • STA1 also needs to perform carrier detection before the primary channel is transmitted. If the result of carrier detection To be busy, STA1 does not transmit on the primary channel. STA1 If the carrier detection result is idle, STA1 transmits the first preamble on the primary channel, and then STA1 transmits the second preamble and data part on the corresponding RU.
  • the resource corresponding to the second preamble and the data part is a resource allocated by the AP to the user.
  • the second preamble includes an efficient short training field (HE-STF) and a high efficiency long sequence domain (HE-LTF).
  • HE-STF efficient short training field
  • HE-LTF high efficiency long sequence domain
  • 12 is an indication that, in order to allow the transmission to be determined on the allocated RU, in the case where the primary channel transmits the first preamble, STA1 judges that the transmission can be performed on the allocated RU (primary channel), and STA2 and STA3 determine that the assignment is in progress.
  • the RU cannot transmit, but STA3 judges that a schematic diagram of the first preamble can be transmitted on the primary channel.
  • the AP indicates in the triggered frame that the station allows the first preamble to be transmitted in the idle basic channel bandwidth when the allocated RU is unable to transmit.
  • STA2 performs carrier detection on the allocated RU.
  • the carrier detection result is busy, or the transmission power does not meet the AP requirement.
  • STA2 cannot transmit on the RU allocated by the AP to itself.
  • STA2 knows by the indication of the trigger frame that the first preamble can be transmitted in the idle basic channel bandwidth.
  • the primitive transmitted by the MAC entity of STA2 to the PHY entity needs to indicate a list of basic channel bandwidths that can be transmitted, and each bit indicates whether the corresponding basic channel bandwidth can transmit the first preamble. For example, the carrier detection result of STA2 on the primary channel is idle, and the secondary channel corresponding to the RU allocated to STA2 in the AP is busy.
  • the detection result in the secondary 40 MHz is that the first basic channel unit is idle, and the second channel unit is busy.
  • the indicated basic channel bandwidth list is 1010 (set to 1 to allow transmission, and 0 to indicate that transmission is not allowed), where "1010", from left to right, corresponds to low
  • the channel number is the basic channel bandwidth to the high channel number basic channel bandwidth, the leftmost 1 indicates the channel number minimum basic channel bandwidth, and the rightmost 0 indicates the highest basic channel bandwidth.
  • the PHY entity of STA2 transmits the first preamble on the primary channel and the low channel number 20 MHz of the secondary 40 MHz.
  • STA3 performs carrier detection on the allocated RU, and the carrier detection result is busy or transmission power. If the AP requirements are not met, STA3 cannot transmit on the RU that the AP assigns to itself. STA3 knows by the indication of the trigger frame that the first preamble can be transmitted in the idle basic channel bandwidth.
  • a list of basic channel bandwidths that can be transmitted or a comparison map is indicated. For example, the carrier detection result of STA3 on the primary channel is busy, the detection result of the secondary channel carrier is idle, and the detection result of the secondary 40 MHz is that the first basic channel unit is busy, and the second channel unit is busy, the MAC entity of STA3 is In the primitive passed to the PHY entity, the indicated base channel bandwidth bitmap is 0100. STA3 transmits the first preamble only on the secondary channel.
  • the STA1 determines, on the RU allocated to the AP, that if it can transmit, the STA1 transmits the first preamble on the basic channel bandwidth corresponding to the resource allocated by the AP, and transmits the second preamble and the data part on the resource allocated by the AP. After STA1 judges that transmission cannot be performed, it can judge the state of all other basic channel bandwidths.
  • the primitive transmitted by the MAC entity of STA1 to the PHY entity needs to indicate a list of basic channel bandwidths that can be transmitted, and each bit indicates whether the corresponding basic channel bandwidth can transmit the first preamble. For example, the carrier detection result of STA1 on the primary channel is busy, and the detection result of the secondary channel carrier is busy.
  • the MAC entity of STA2 is In the primitive passed by the PHY entity, the indicated basic channel bandwidth list is 0010. STA1 transmits the first preamble only in the first basic channel unit (low channel number) of the secondary 40 MHz.
  • 13 is a diagram indicating that the station allows the first preamble to be transmitted in the idle basic channel bandwidth when the allocated RU is unable to transmit, STA1 judges that the transmission can be performed on the allocated RU (primary channel), and STA2 and STA3 determine that the assignment is in progress.
  • the RU cannot transmit, but STA2 judges that the first 20 MHz (low channel number) of the primary channel and the secondary 40 MHz can transmit the first preamble, and STA3 judges that the first preamble can be transmitted on the primary channel.
  • the AP indicates in the triggered frame that the station allows the first preamble to be transmitted in the idle basic channel bandwidth when the allocated RU is unable to transmit, but must be idle on the primary channel. Under the premise.
  • STA2 performs carrier detection on the allocated RU.
  • the carrier detection result is busy or the transmission power cannot meet the requirements of the AP.
  • STA2 cannot transmit on the RU allocated by the AP to itself.
  • STA2 knows that the first preamble is transmitted in the idle basic channel bandwidth by the indication of the trigger frame, but must be on the premise that the primary channel is idle.
  • the primitive passed by the MAC entity of STA2 to the PHY entity needs to indicate a list of basic channel bandwidths that can be transmitted or become a bitmap. For example, the carrier detection result of STA2 on the primary channel is idle, and the secondary channel corresponding to the RU allocated to STA2 in the AP is busy. The detection result in the secondary 40 MHz is that the first basic channel unit is idle, and the second channel unit is busy. Then, in the primitive delivered by the MAC entity of STA2 to the PHY entity, the indicated basic channel bandwidth bitmap is 1010. The PHY entity of STA2 transmits the first preamble on the primary channel and the secondary channel frequency of the secondary channel of 40 MHz. On the premise that the basic channel unit corresponding to the RU allocated by the AP is busy, if the carrier detection result of the STA2 on the primary channel is busy, STA2 cannot transmit the first preamble on all channels.
  • STA1 also needs to perform carrier detection before the primary channel is transmitted. If the result of the carrier detection is idle, STA1 transmits a first preamble on the primary channel and then transmits a second preamble and data portion on the corresponding RU.
  • the second preamble includes an efficient short training field (HE-STF) and a high efficiency long sequence domain (HE-LTF).
  • HE-STF efficient short training field
  • HE-LTF high efficiency long sequence domain
  • STA1 also needs to perform carrier detection before the primary channel is transmitted. If the result of the carrier detection is busy, then STA1 does not transmit on the primary channel, and at this time, STA1 cannot transmit the first preamble in other basic channel bandwidths.
  • FIG. 14 is a schematic diagram of transmitting a first preamble in an idle basic channel bandwidth when the primary channel is idle when the primary channel is idle in the 80 MHz case according to the embodiment of the present invention.
  • STA3 may judge that the first preamble may be transmitted in a certain basic channel bandwidth, such as in the secondary channel, but since the primary channel judges that the first preamble cannot be transmitted, STA3 cannot transmit the first preamble in all basic channel bandwidths.
  • FIG. 15 is a schematic diagram of transmitting a first preamble in a continuous preset basic channel bandwidth including a primary channel when the scheduled RU cannot be transmitted in the 80 MHz case according to the embodiment of the present invention.
  • STA2 judges that the basic channel bandwidth of the first preamble that can be transmitted is the main channel and the auxiliary 40 MHz, but since the transmitted channel must be continuous with the main channel (main 20 MHz), 20 MHz, 40 MHz, 80 MHz or 160 MHz One, therefore, STA2 can only transmit the first preamble on the primary channel.
  • STA3 judges that the scheduled RU cannot be transmitted, but STA3 judges that the primary 20 MHz, the secondary 20 MHz, and the high channel number basic channel bandwidth at the secondary 40 MHz can transmit the first preamble, but since it must be 20 MHz continuous with the main channel (main 20 MHz) One of 40MHz, 80MHz or 160MHz, therefore, STA3 can only transmit the first preamble at the primary 20MHz and the secondary 20MHz.
  • the AP and STA1, STA2, and STA3 can also perform capability negotiation in the process of association.
  • STA1, STA2, and STA3 inform the AP whether the AP supports sending the first preamble on the primary channel or notifying whether the AP supports the allocation when the allocated RU cannot be sent.
  • the RU cannot transmit, transmitting the first preamble on the primary channel, or transmitting the first preamble in the idle basic channel bandwidth, or transmitting the first preamble in the idle basic channel bandwidth if the primary channel is idle, or including the primary
  • the first preamble is transmitted within a continuous preset basic channel bandwidth of the channel.
  • the present invention cites three cases using one bit representation, but other use of 1 bit indicates that the RU allocated by the AP cannot be transmitted, and should also fall within the scope of this patent.
  • AP1 and STA1, STA2 and STA3 form a BSS
  • AP2 and STA4 form a BSS
  • two BSSs work in the same frequency band
  • the working bandwidth is 40MHz
  • the main channel is aligned, as shown in Figure 3.
  • the AP1 sends a trigger frame to schedule random access resources, where the secondary channel is divided into four random access RUs.
  • the AP instructs the station to perform physical carrier detection and virtual carrier detection (hereinafter collectively referred to as carrier detection) in the transmitted trigger frame.
  • carrier detection physical carrier detection and virtual carrier detection
  • the AP1 may further indicate, in the trigger frame, a manner of transmission of the station when the scheduled resource cannot be transmitted, and the transmission manner may be one of the following forms: transmitting the first preamble on the primary channel; transmitting the first preamble in the idle basic channel bandwidth; In the case where the primary channel is idle, the first preamble is transmitted in the idle basic channel bandwidth; the first preamble is transmitted in the continuous preset basic channel bandwidth including the primary channel.
  • the manner of indication may be a 1-bit indication or a multi-bit indication.
  • 1 bit indicates one of the above-mentioned transmittable modes, and the meaning of the representation is: a state of 1 bit (such as this bit is set to 1), indicating that the first preamble is allowed to be transmitted using one of the above transmission modes, and the other of the 1 bit is transmitted.
  • the state (such as this bit is set to 0) means that the first preamble is not allowed to be transmitted.
  • each combination state using each bit indicates a transmission mode.
  • STA1 and STA2 selects random access based on the trigger frame.
  • STA1, ST2, and STA3 are randomly numbered each, and the backoff process of the random access procedure based on the trigger frame is performed.
  • STA1 can reduce the random number to 0 according to the number of random access RUs.
  • STA1 performs carrier detection, and the detection result is permission to transmit.
  • STA1 transmits in a randomly selected RU.
  • STA2 does not reduce the random number to 0.
  • STA1 determines the transmission mode of other basic channel bandwidths according to the transmission mode allowed by the AP.
  • STA2 transmits the first preamble on the primary channel, and STA2 performs carrier detection when the primary channel transmits the first preamble, and if the primary channel carrier detection result is idle, transmits the first on the primary channel. Preamble; if the primary channel carrier detection result is busy, the first preamble is not transmitted on the primary channel.
  • STA2 When the idle primary channel bandwidth transmits the first preamble, STA2 performs carrier detection on all basic channel bandwidths, and transmits the first preamble at all basic channel bandwidths determined to be idle.
  • the primary channel bandwidth transmits the first preamble
  • STA2 performs carrier detection on all basic channel bandwidths, and transmits the first preamble in all idle basic channel bandwidths on the premise that the primary channel is idle. . If the primary channel is not idle, then all basic channels The first preamble cannot be transmitted over the bandwidth.
  • STA3 reduces the random number to 0 according to the number of random access RUs, but the carrier detection result is busy, or the transmission power does not meet the AP requirement, and STA3 cannot transmit on the random access RU.
  • STA3 can determine the transmission mode of other basic channel bandwidths according to the transmission mode indicated by the AP.
  • AP1 and STA1, STA2 and STA3 form a BSS
  • AP2 and STA4 form a BSS, as shown in Figure 2.
  • the two BSSs operate in the same frequency band, the working bandwidth is 80 MHz, the primary channel is aligned, and the primary channel is the basic channel unit with the smallest channel number. There may be other sites in the two BSSs, which are not listed here.
  • AP1 contends to the channel to send a trigger frame, and schedules STA1, STA2, and STA3 to transmit.
  • the RU corresponding to STA1 is on the primary channel
  • the RU corresponding to STA2 is on the secondary channel
  • the RU corresponding to STA3 is on one of the 20 MHz channels of the secondary 40 MHz, as shown in FIG.
  • the AP indicates, by means of several bits, the transmission form of the station when the allocated RU does not satisfy the preset condition in the transmitted trigger frame.
  • a 3-bit indication transmission mode is used, as shown in Table 1.
  • STA2 is judged to be unable to transmit in the corresponding RU.
  • the condition of the judgment satisfies one of the following conditions: the result of carrier detection is busy; the transmission power does not satisfy the requirement of the transmitting station; and the random access backoff is not zero.
  • Carrier detection is performed on the primary channel. If the primary channel is idle, two 20 MHz carriers corresponding to the secondary 40 MHz are detected as idle. However, since the indicated transmission mode must contain the primary channel, it must be contiguous with the primary channel. Therefore, STA2 cannot transmit the first preamble on the secondary 40MHz, and STA2 can only transmit the first preamble on the primary channel.
  • AP1 and STA1, STA2 and STA3 form a BSS
  • AP2 and STA4 form a BSS, as shown in Figure 2.
  • the two BSSs operate in the same frequency band, the working bandwidth is 80 MHz, the primary channel is aligned, and the primary channel is the basic channel unit with the smallest channel number. There may be other sites in the two BSSs, which are not listed here.
  • AP1 contends to the channel to send a trigger frame, and schedules STA1, STA2, and STA3 to transmit.
  • the RU corresponding to STA1 is on the primary channel
  • the RU corresponding to STA2 is on the secondary channel
  • the RU corresponding to STA3 is on one of the 20 MHz channels of the secondary 40 MHz, as shown in FIG.
  • the AP may also not use the triggering frame to indicate the transmission mode when the scheduled RU (the scheduled RU includes a random access resource or a resource explicitly assigned to a certain user) cannot be transmitted, and the transmitting and receiving parties agree.
  • the agreed transmission mode is to transmit the first preamble on the primary channel. Then, when STA2 determines that the transmission cannot be performed on the allocated RU, the first preamble may be transmitted on the primary channel, and STA2 performs carrier detection when the primary channel transmits the first preamble, and if the primary channel carrier detection result is idle, then on the primary channel. Transmitting the first preamble; if the primary channel carrier detection result is busy, then not in the primary channel The first preamble is transmitted.
  • STA1 and STA3 operate similarly to STA2, and are not described here.
  • STA1, STA2, and STA3 may also be any of the forms listed in Table 1, except that the transmission form needs to be specified by both the transmitting and receiving parties. At this time, the AP is not required to indicate the trigger frame.
  • STA1, STA2, and STA3 judge that the scheduled RU cannot be transmitted, it transmits in the form agreed by the transmitting and receiving parties on other basic channel bandwidths.
  • AP1 and STA1, STA2 and STA3 form a BSS
  • AP2 and STA4 form a BSS
  • two BSSs work in the same frequency band
  • the working bandwidth is 40MHz
  • the main channel is aligned, as shown in Figure 3.
  • the AP1 sends a trigger frame to schedule random access resources, where the secondary channel is divided into four random access RUs.
  • the AP instructs the station to perform physical carrier detection and virtual carrier detection (hereinafter collectively referred to as carrier detection) in the transmitted trigger frame.
  • carrier detection physical carrier detection and virtual carrier detection
  • the AP may also not use the triggering frame to indicate the transmission mode when the scheduled RU (the scheduled RU includes a random access resource or a resource explicitly assigned to a certain user) cannot be transmitted, and the transmitting and receiving parties agree.
  • the agreed transmission mode is to transmit the first preamble on the primary channel. Then, when STA2 judges that the transmission cannot be performed on the random access resource, the first preamble can be transmitted on the primary channel.
  • the judgment condition must satisfy at least one of the following: the result of the carrier detection is busy; the transmission power does not satisfy the requirement of the transmitting station; and the backoff is not zero in the random access.
  • STA2 When the primary channel transmits the first preamble, STA2 performs carrier detection. If the primary channel carrier detection result is idle, the first preamble is transmitted on the primary channel; if the primary channel carrier detection result is busy, the first preamble is not transmitted on the primary channel.
  • STA1 and STA3 operate similarly to STA2, and are not described here.
  • STA1, STA2, and STA3 may also be any of the forms listed in Table 1, Only the transmission form needs to be stipulated by both parties. At this time, the AP is not required to indicate the trigger frame.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the device is implemented in a flow chart A function specified in a block or blocks of a process or multiple processes and/or block diagrams.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
  • an embodiment of the present invention further provides a computer storage medium, wherein a computer program is stored, the computer program configured to perform the transmission method of the embodiment of the present invention.
  • the first station indicates, in the transmitted radio frame, a transmission form when the second station does not meet the preset condition on the scheduled resource, where the transmission form includes at least one of the following: Channel transmitting a first preamble; transmitting a first preamble in an idle basic channel bandwidth; transmitting a first preamble in an idle basic channel bandwidth if the primary channel is idle; and transmitting in a continuously preset basic channel bandwidth including the primary channel A lead.
  • the receiving of the BSS is not interfered with, and the NAV of the OBSS can be set to protect the next frame transmission of the BSS, thereby reducing network collision and improving network performance.

Abstract

The present invention discloses a transmission method, a device and a station, and a computer storage medium. The method comprises: indicating, by a transmission station, in the transmitted radio frame a transmission form for a receiving station when a preset condition is not met in terms of the scheduled resource; and when a preset condition is not met in terms of the scheduled resource, determining, by the receiving station, the transmission form according to an instruction of the transmission station or an agreement with the transmission station. By implementing the embodiments of the present invention, network collisions are reduced and the network performance is improved.

Description

一种传输方法、装置及站点、计算机存储介质Transmission method, device and station, computer storage medium
相关申请的交叉引用Cross-reference to related applications
本申请基于申请号为201610519003.5、申请日为2016年07月01日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。The present application is based on a Chinese patent application filed on Jan.
技术领域Technical field
本发明涉及无线通信技术，尤其涉及无线局域网中的一种传输方法、装置及站点、计算机存储介质。The present invention relates to wireless communication technologies, and in particular, to a transmission method and apparatus, a station, and a computer storage medium in a wireless local area network.
背景技术Background technique
随着无线局域网络(WLAN，Wireless Local Area Networks)的爆发性应用，WLAN网络的部署不断密集化，网络负载也在不断加重；且随着网络的增多，网络覆盖重叠的情况也更加严重，WLAN网络的效率会出现明显下降的趋势，单纯提高速率并不能解决该问题。因此，IEEE标准组织成立了相关的任务小组致力于解决WLAN网络效率问题，其中，网络密集部署情况下的干扰避免和效率提升的技术成为讨论的热点。With the explosive application of Wireless Local Area Networks (WLAN), the deployment of WLAN networks is increasingly dense, and the network load is increasing. As the number of networks increases, the coverage of network coverage becomes more serious. The efficiency of the network will show a significant downward trend, and simply increasing the rate will not solve the problem. Therefore, the IEEE Standards Organization has established a related task force to address the WLAN network efficiency problem. Among them, the technology of interference avoidance and efficiency improvement in the case of network dense deployment has become a hot topic of discussion.
802.11中，一个接入点(AP，Access Point)以及与AP相关联的多个站点(STA，Station)组成了一个基本服务集(BSS，Basic Service Set)。多个BSS工作在相同频段，覆盖部分重叠(OBSS，Overlapping BSS)，如图1所示。In 802.11, an access point (AP, Access Point) and multiple stations (STA, Station) associated with the AP form a basic service set (BSS). Multiple BSSs work in the same frequency band, covering partial overlap (OBSS, Overlapping BSS), as shown in Figure 1.
在802.11中，无线帧传输的带宽是信道化的。比如，在802.11n/ac是以20MHz为基本单位进行信道化的，站点可以在20MHz的整数倍上进行传输。在802.11ah中，是以1Mhz和2MHz为基本单位进行信道化的，这 里把这种基本带宽成为基本信道带宽。基本服务集的所有站点操作的公共信道称为主信道(主20MHz)，以160Mhz为例，信道化如2所示。In 802.11, the bandwidth of a radio frame transmission is channelized. For example, in 802.11n/ac is channelized in 20MHz as a basic unit, the station can transmit at an integer multiple of 20MHz. In 802.11ah, channelization is based on 1Mhz and 2MHz. This basic bandwidth is made into the basic channel bandwidth. The common channel operated by all stations of the basic service set is called the primary channel (primary 20 MHz), taking 160 Mhz as an example, and the channelization is as shown in 2.
目前802.11支持物理载波检测和虚拟载波检测两种信道空闲判定方法，当虚拟载波检测和物理载波检测都判定信道空闲，关联站点才能够进行竞争发送。物理载波检测是指空闲信道估计(CCA，Clear Channel Assessment)信道检测技术，关联站点通过对媒介上的信号强度进行检测，判定信道是忙碌还是空闲。物理载波检测都是以基本信道带宽进行检测的。虚拟载波检测是指除了通信双方之外的第三方关联站点，当收到接收地址不是自己的无线帧时，根据帧中的连续时间(Duration)域设置本地网络分配矢量(NAV，Network Allocation Vector)的值，当NAV不为零时，认为信道繁忙，不进行竞争发送。物理层帧头的捕获、NAV设置、beacon帧的接收等都和主信道相关。物理载波检测和虚拟载波检测这里统称为载波检测。At present, 802.11 supports two methods of channel idle determination for physical carrier detection and virtual carrier detection. When both virtual carrier detection and physical carrier detection determine that the channel is idle, the associated station can perform contention transmission. Physical carrier detection refers to the Clear Channel Assessment (CCA) channel detection technology. The associated station detects whether the channel is busy or idle by detecting the signal strength on the medium. Physical carrier detection is detected with the basic channel bandwidth. The virtual carrier detection refers to a third-party associated station other than the communication parties. When receiving a radio frame whose receiving address is not its own, the local network allocation vector (NAV, Network Allocation Vector) is set according to the Duration field in the frame. The value, when the NAV is not zero, considers the channel to be busy and does not perform contention transmission. The capture of the physical layer header, the NAV setting, and the reception of the beacon frame are all related to the primary channel. Physical carrier detection and virtual carrier detection are collectively referred to herein as carrier detection.
在下一代WLAN密集网络场景下，正在讨论的技术中包括支持新标准的站点在发送的新格式无线帧的物理层帧头中加入BSS网络标识(BSS Color)、站点标识(STA ID)、上下行指示(UL/DL flag)、及空间复用参数、预约传输时长等控制信息，这样检测到该无线帧的站点就可以提前根据这些控制信息判断后续的无线帧负载或该传输的基本情况，从而决定下一步的操作，这种新格式的无线帧统称为高效(HE，High Efficiency)无线帧。In the next-generation WLAN dense network scenario, the technology under discussion includes a site supporting the new standard to add a BSS network identifier (BSS Color), a site identifier (STA ID), and up and down in the physical layer header of the transmitted new format radio frame. Control information such as a line indication (UL/DL flag), a spatial multiplexing parameter, and a reserved transmission duration, so that the station that detects the radio frame can determine the subsequent radio frame load or the basic condition of the transmission according to the control information in advance. Thus, the next operation is determined. This new format of radio frames is collectively referred to as a High Efficiency (HE) radio frame.
此外，在下一代WLAN密集网络场景下，还定义了多用户并行传输技术，包括多用户多入多出(MU-MIMO，Multi-User MIMO)技术、正交频分多址(OFDMA，Orthogonal Frequency Division Multiple Access)技术等。MU-MIMO利用空间复用技术提高了时间和频率的利用率。OFDMA技术的引入使得多个站点在整个带宽上频分复用，能更有效地利用站点间频率选择的结果提高频谱利用率。上行多用户(UL MU)传输需要AP进行触发， 例如可以发送单独的触发帧来触发实现，或者采用在无线帧中携带触发信息域的方式触发实现。AP发送触发帧(Trigger Frame)，触发多个用户同时进行传输，AP在触发帧中会调度用户发送的资源单位(RU，Resource Unit)，只要AP成功的收到其中任何一个用户的响应，就认为这个帧交换成功，AP可以进行后续帧发送。AP在触发帧还会指示站点是否需要进行CS检测，如果需要进行CS检测，那么站点的NAV不为0或者分配的RU对应的20MHz的物理载波检测结果为忙，站点都不能进行发送。但是，如果分配到主信道的用户的CS检测结果是站点不能发送，那么这个时候主信道就是没有信号，在OBSS的场景下，其他BSS的没有收到trigger的站点就可以竞争信道进行发送，对AP的下一次在主信道的传输造成干扰，如图2所示。AP1和STA1，STA2和STA3组成一个BSS，AP2和STA4组成一个BSS，两个BSS工作在相同的频段，主信道是对齐的。两个BSS内可能还有其他站点，这里不再列举。AP1竞争到信道发送触发帧，调度STA1、STA2和STA3发送。其中，STA1和STA2对应的RU在主信道，STA3对应的RU在辅信道。由于STA4和AP2无法收到AP1发送的触发帧，并且和STA1和STA2是隐藏终端，STA4在和AP2很长一段时间在主信道无法收到信号，那么站点就会触发竞争，干扰AP1后续调度传输。In addition, in the next-generation WLAN dense network scenario, multi-user parallel transmission technology is also defined, including multi-user MIMO (Multi-User MIMO) technology, orthogonal frequency division multiple access (OFDMA, Orthogonal Frequency). Division Multiple Access) technology. MU-MIMO utilizes spatial multiplexing techniques to increase time and frequency utilization. The introduction of OFDMA technology enables multiple sites to be frequency-multiplexed over the entire bandwidth, which can more effectively utilize the results of inter-site frequency selection to improve spectrum utilization. Uplink multi-user (UL MU) transmission requires an AP to trigger, For example, a separate trigger frame may be sent to trigger the implementation, or the implementation may be triggered by carrying a trigger information field in the radio frame. The AP sends a Trigger Frame to trigger multiple users to transmit at the same time. The AP will schedule the resource unit (RU, Resource Unit) sent by the user in the trigger frame. As long as the AP successfully receives the response from any one of the users, the AP will receive the response. It is considered that this frame exchange is successful, and the AP can perform subsequent frame transmission. The AP also indicates whether the station needs to perform CS detection in the trigger frame. If CS detection is required, the NAV of the station is not 0 or the 20 MHz physical carrier detection result corresponding to the allocated RU is busy, and the station cannot transmit. However, if the CS detection result of the user assigned to the primary channel is that the station cannot transmit, then the primary channel has no signal at this time. In the OBSS scenario, the stations of other BSSs that have not received the trigger can contend for the channel to transmit, The next time the AP transmits interference on the primary channel, as shown in Figure 2. AP1 and STA1, STA2 and STA3 form one BSS, AP2 and STA4 form one BSS, two BSSs work in the same frequency band, and the main channels are aligned. There may be other sites in the two BSSs, which are not listed here. AP1 contends to the channel to send a trigger frame, and schedules STA1, STA2, and STA3 to transmit. The RU corresponding to STA1 and STA2 is on the primary channel, and the RU corresponding to STA3 is on the secondary channel. Since STA4 and AP2 cannot receive the trigger frame sent by AP1, and STA1 and STA2 are hidden terminals, STA4 and AP2 cannot receive the signal on the primary channel for a long time, then the station will trigger the competition and interfere with the subsequent scheduled transmission of AP1. .
发明内容Summary of the invention
为解决上述技术问题，本发明实施例提供了一种传输方法、装置及站点、计算机存储介质。To solve the above technical problem, an embodiment of the present invention provides a transmission method and apparatus, a station, and a computer storage medium.
本发明实施例提供的传输方法，包括：The transmission method provided by the embodiment of the present invention includes:
第一站点在发送的无线帧中指示第二站点在调度的资源上不满足预设条件时的传输形式；其中，所述传输形式至少包括以下之一：The first station indicates, in the transmitted radio frame, a transmission form when the second station does not meet the preset condition on the scheduled resource; wherein the transmission form includes at least one of the following:
在主信道传输第一前导；Transmitting a first preamble on the primary channel;
在空闲的基本信道带宽传输第一前导； Transmitting the first preamble in the idle basic channel bandwidth;
在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth if the primary channel is idle;
在包括主信道的连续预设基本信道带宽内传输第一前导。The first preamble is transmitted within a continuous preset basic channel bandwidth including the primary channel.
本发明实施例中，所述调度的资源是基于触发帧的上行随机接入资源或基于触发帧的确定资源。In the embodiment of the present invention, the scheduled resource is an uplink random access resource based on a trigger frame or a determined resource based on a trigger frame.
本发明实施例中，在调度的资源上不满足预设条件是指：在调度的资源上不满足以下条件的至少之一：In the embodiment of the present invention, the failure to satisfy the preset condition on the scheduled resource means that at least one of the following conditions is not met on the scheduled resource:
载波检测的结果为空闲；The result of carrier detection is idle;
发送功率满足第一站点的要求；The transmission power meets the requirements of the first site;
在随机接入退避为零；The random access backoff is zero;
其中，在调度的资源上不满足所述预设条件时，在调度的资源上不能进行传输。When the preset condition is not met on the scheduled resource, the transmission cannot be performed on the scheduled resource.
本发明实施例中，所述方法还包括：所述第一站点在所述无线帧中通过1比特或者多比特指示是否采用所述传输形式或者所采用的具体传输形式。In the embodiment of the present invention, the method further includes: the first station indicates whether to adopt the transmission form or a specific transmission format by using one or more bits in the radio frame.
本发明实施例中，所述第一站点在所述无线帧中通过1比特指示是否采用所述传输形式或者所采用的具体传输形式，包括：In the embodiment of the present invention, the first station indicates, by using one bit in the radio frame, whether the transmission form or the specific transmission format is adopted, including:
当所述1比特为第一值时，通过所述1比特指示不允许传输所述第一前导；When the 1 bit is the first value, the first preamble is not allowed to be transmitted by the 1 bit indication;
当所述1比特为第二值时，通过所述1比特指示允许传输所述第一前导；其中，所述允许传输所述第一前导的传输方式为以下之一：在主信道传输第一前导、在空闲的基本信道带宽传输第一前导、在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导、在包括主信道的连续预设基本信道带宽内传输第一前导。When the 1 bit is the second value, the first preamble is allowed to be transmitted by the 1 bit; wherein the transmission mode for allowing the transmission of the first preamble is one of: transmitting the first channel on the primary channel The preamble transmits the first preamble in the idle basic channel bandwidth, transmits the first preamble in the idle basic channel bandwidth, and transmits the first preamble in the continuous preset basic channel bandwidth including the main channel in the case that the primary channel is idle.
本发明实施例中，所述第一站点在所述无线帧中通过多比特指示是否采用所述传输形式或者所采用的具体传输形式，包括： In the embodiment of the present invention, the first station indicates, by using multiple bits in the radio frame, whether to adopt the transmission form or a specific transmission format, including:
通过所述多比特中各个比特位的各种排列组合，来指示是否采用所述传输形式或者所采用的各种具体传输形式。Whether to adopt the transmission form or various specific transmission forms employed is adopted by various permutation combinations of the individual bits in the multi-bit.
本发明实施例中，所述包含主信道的连续预设基本信道带宽所占用的带宽为以下之一：主20MHz，主40MHz，主80MHz，160MHz。In the embodiment of the present invention, the bandwidth occupied by the continuous preset basic channel bandwidth including the primary channel is one of the following: main 20 MHz, main 40 MHz, main 80 MHz, and 160 MHz.
本发明实施例中，所述第一前导为多用户同时在同一频带发送的相同前导。In the embodiment of the present invention, the first preamble is the same preamble that multiple users simultaneously transmit in the same frequency band.
本发明实施例中，所述第一前导包括：传统短训练域、传统长训练域、传统信令域、重复的传统信令域、高效信令域。In the embodiment of the present invention, the first preamble includes: a traditional short training domain, a traditional long training domain, a traditional signaling domain, a repeated traditional signaling domain, and an efficient signaling domain.
本发明实施例中，所述第一前导以基本信道带宽为单位重复进行发送。In the embodiment of the present invention, the first preamble is repeatedly transmitted in units of a basic channel bandwidth.
本发明实施例中，所述第一站点发送的无线帧携带所述第一前导需要填写的信息。In the embodiment of the present invention, the radio frame sent by the first station carries information that needs to be filled in by the first preamble.
本发明另一实施例提供的传输方法，包括：A transmission method provided by another embodiment of the present invention includes:
第二站点在调度的资源上不满足预设条件时，按照第一站点的指示或者与第一站点之间的约定，确定传输形式；其中，所述传输形式至少包括以下之一：When the second site does not meet the preset condition on the scheduled resource, the transmission form is determined according to the indication of the first site or the agreement with the first site; wherein the transmission form includes at least one of the following:
在主信道传输第一前导；Transmitting a first preamble on the primary channel;
在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth;
在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth if the primary channel is idle;
在包括主信道的连续预设基本信道带宽内传输第一前导。The first preamble is transmitted within a continuous preset basic channel bandwidth including the primary channel.
本发明实施例中，在调度的资源上不满足预设条件是指：在调度的资源上不满足以下条件的至少之一：In the embodiment of the present invention, the failure to satisfy the preset condition on the scheduled resource means that at least one of the following conditions is not met on the scheduled resource:
载波检测的结果为空闲；The result of carrier detection is idle;
发送功率满足第一站点的要求；The transmission power meets the requirements of the first site;
在随机接入退避为零；The random access backoff is zero;
其中，在调度的资源上不满足所述预设条件时，在调度的资源上不能 进行传输。Where the preset condition is not met on the scheduled resource, the scheduled resource cannot be used. Transfer.
本发明实施例中，所述包含主信道的连续预设基本信道带宽所占用的带宽为以下之一：主20MHz，主40MHz，主80MHz，160MHz。In the embodiment of the present invention, the bandwidth occupied by the continuous preset basic channel bandwidth including the primary channel is one of the following: main 20 MHz, main 40 MHz, main 80 MHz, and 160 MHz.
本发明实施例中，所述第一前导包括：传统短训练域、传统长训练域、传统信令域、重复的传统信令域、高效信令域。In the embodiment of the present invention, the first preamble includes: a traditional short training domain, a traditional long training domain, a traditional signaling domain, a repeated traditional signaling domain, and an efficient signaling domain.
本发明实施例中，第二站点按照与第一站点之间的约定，确定传输形式，包括：In the embodiment of the present invention, the second site determines the transmission format according to the agreement with the first site, including:
第二站点根据预定的传输策略，确定传输形式；其中，所述预定传输策略中的传输形式至少包括以下之一：在主信道传输第一前导、在空闲的基本信道带宽传输第一前导、在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导、在包括主信道的连续预设基本信道带宽内传输第一前导。The second station determines a transmission form according to a predetermined transmission policy, where the transmission form in the predetermined transmission policy includes at least one of: transmitting a first preamble on the primary channel, transmitting a first preamble on the idle basic channel bandwidth, When the primary channel is idle, the first preamble is transmitted in the idle basic channel bandwidth, and the first preamble is transmitted in the continuous preset basic channel bandwidth including the primary channel.
本发明实施例中，所述调度的资源是基于触发帧的上行随机接入资源或基于触发帧的确定资源。In the embodiment of the present invention, the scheduled resource is an uplink random access resource based on a trigger frame or a determined resource based on a trigger frame.
本发明实施例中，所述基于触发帧的确定资源是：指示分配给特定站点的资源。In the embodiment of the present invention, the determining resource based on the trigger frame is: indicating a resource allocated to a specific site.
本发明实施例中，当所述传输形式为在主信道传输第一前导时，所述方法还包括：In the embodiment of the present invention, when the transmission form is to transmit the first preamble on the primary channel, the method further includes:
在主信道传输第一前导之前，所述第二站点在所述主信道上进行载波检测；Before the primary channel transmits the first preamble, the second station performs carrier detection on the primary channel;
当载波检测结果为空闲时，所述第二站点在所述主信道上传输第一前导；When the carrier detection result is idle, the second station transmits the first preamble on the primary channel;
当载波检测结果为忙时，所述第二站点不能在所述主信道上传输第一前导。When the carrier detection result is busy, the second station cannot transmit the first preamble on the primary channel.
本发明实施例中，所述在包括主信道的连续预设基本信道带宽内传输 第一前导，包括：In the embodiment of the present invention, the transmitting in a continuous preset basic channel bandwidth including a primary channel The first lead includes:
在所述包括主信道的连续预设基本信道带宽内传输第一前导之前，所述第二站点在所述包括主信道的连续预设基本信道带宽上进行载波检测；Before transmitting the first preamble in the continuous preset basic channel bandwidth including the primary channel, the second station performs carrier detection on the continuous preset basic channel bandwidth including the primary channel;
当所有基本信道带宽的载波检测结果为空闲时，所述第二站点在所述包括主信道的连续预设基本信道带宽上传输第一前导；When the carrier detection result of all the basic channel bandwidths is idle, the second station transmits the first preamble on the continuous preset basic channel bandwidth including the primary channel;
当部分基本信道带宽的载波检测结果为忙时，所述第二站点在所述包括主信道的连续预设基本信道带宽上不传输第一前导。When the carrier detection result of the partial basic channel bandwidth is busy, the second station does not transmit the first preamble on the continuous preset basic channel bandwidth including the primary channel.
本发明实施例中，当所述传输形式为在空闲的基本信道带宽传输第一前导，或者在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导时，所述方法还包括：In the embodiment of the present invention, when the transmission form is to transmit the first preamble in the idle basic channel bandwidth, or to transmit the first preamble in the idle basic channel bandwidth in the case that the primary channel is idle, the method further includes:
所述第二站点在介质访问控制(MAC，Medium Access Control)实体向物理(PHY，Physical Layer)实体传递的参数中指示基本信道带宽状态列表。The second station indicates a basic channel bandwidth state list in a parameter passed by a Medium Access Control (MAC) entity to a physical layer (Physical Layer) entity.
本发明实施例中，所述基本信道带宽状态列表中，每一个基本信道带宽使用1比特来表示对应的基本信道带宽是否允许传输。In the embodiment of the present invention, in the basic channel bandwidth state list, each basic channel bandwidth uses 1 bit to indicate whether the corresponding basic channel bandwidth is allowed to be transmitted.
本发明实施例中，当所述传输形式为在主信道传输第一前导，或者在包括主信道的连续预设基本信道带宽内传输第一前导时，所述第二站点在MAC实体向PHY实体传递的参数中指示第一前导所占用的带宽大小信息。In the embodiment of the present invention, when the transmission form is to transmit the first preamble on the primary channel, or to transmit the first preamble in the continuous preset basic channel bandwidth including the primary channel, the second station is in the MAC entity to the PHY entity. The transmitted parameter indicates the bandwidth size information occupied by the first preamble.
本发明实施例中，所述PHY实体根据所述MAC实体的指示产生第一前导，并且将所述第一前导在所述基本信道带宽状态列表中指示为允许传输的基本信道带宽上传输。In the embodiment of the present invention, the PHY entity generates a first preamble according to the indication of the MAC entity, and transmits the first preamble in the basic channel bandwidth state list as a basic channel bandwidth that is allowed to be transmitted.
本发明实施例中，所述方法还包括：In the embodiment of the present invention, the method further includes:
所述第二站点和所述第一站点在关联时，协商当所述第二站点在调度的资源上不满足预设条件时的传输方式。When the second site and the first site are associated, the transmission mode when the second site does not meet the preset condition on the scheduled resource is negotiated.
本发明实施例提供的传输装置，包括： The transmission device provided by the embodiment of the present invention includes:
指示单元，配置为在发送的无线帧中指示第二站点在调度的资源上不满足预设条件时的传输形式；其中，所述传输形式至少包括以下之一：And an indication unit, configured to indicate, in the sent radio frame, a transmission form when the second station does not meet the preset condition on the scheduled resource; wherein the transmission form includes at least one of the following:
在主信道传输第一前导；Transmitting a first preamble on the primary channel;
在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth;
在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth if the primary channel is idle;
在包括主信道的连续预设基本信道带宽内传输第一前导。The first preamble is transmitted within a continuous preset basic channel bandwidth including the primary channel.
本发明实施例中，在调度的资源上不满足预设条件是指：在调度的资源上不满足以下条件的至少之一：In the embodiment of the present invention, the failure to satisfy the preset condition on the scheduled resource means that at least one of the following conditions is not met on the scheduled resource:
载波检测的结果为空闲；The result of carrier detection is idle;
发送功率满足第一站点的要求；The transmission power meets the requirements of the first site;
在随机接入退避为零；The random access backoff is zero;
其中，在调度的资源上不满足所述预设条件时，在调度的资源上不能进行传输。When the preset condition is not met on the scheduled resource, the transmission cannot be performed on the scheduled resource.
本发明实施例中，所述第一站点在所述无线帧中通过1比特或者多比特指示是否采用所述传输形式或者所采用的具体传输形式。In the embodiment of the present invention, the first station indicates whether to adopt the transmission form or a specific transmission format by using 1 bit or multiple bits in the radio frame.
本发明实施例中，当所述1比特为第一值时，通过所述1比特指示不允许传输所述第一前导；In the embodiment of the present invention, when the 1 bit is the first value, the first preamble is not allowed to be transmitted by the 1 bit indication;
当所述1比特为第二值时，通过所述1比特指示允许传输所述第一前导；其中，所述允许传输所述第一前导的传输方式为以下之一：在主信道传输第一前导、在空闲的基本信道带宽传输第一前导、在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导、在包括主信道的连续预设基本信道带宽内传输第一前导。When the 1 bit is the second value, the first preamble is allowed to be transmitted by the 1 bit; wherein the transmission mode for allowing the transmission of the first preamble is one of: transmitting the first channel on the primary channel The preamble transmits the first preamble in the idle basic channel bandwidth, transmits the first preamble in the idle basic channel bandwidth, and transmits the first preamble in the continuous preset basic channel bandwidth including the main channel in the case that the primary channel is idle.
本发明实施例中，通过所述多比特中各个比特位的各种排列组合，来指示是否采用所述传输形式或者所采用的各种具体传输形式。In the embodiment of the present invention, whether the transmission form or various specific transmission forms are adopted is indicated by various arrangement and combination of each bit in the multiple bits.
本发明实施例中，所述第一前导包括：传统短训练域、传统长训练域、 传统信令域、重复的传统信令域、高效信令域。In the embodiment of the present invention, the first preamble includes: a traditional short training domain, a traditional long training domain, Traditional signaling domain, repeated traditional signaling domain, and efficient signaling domain.
本发明另一实施例提供的传输装置，包括：A transmission device according to another embodiment of the present invention includes:
传输形式确定单元，配置为第二站点在调度的资源上不满足预设条件时，按照第一站点的指示或者与第一站点之间的约定，确定传输形式；其中，所述传输形式至少包括以下之一：a transmission form determining unit, configured to: when the second site does not meet the preset condition on the scheduled resource, determine the transmission form according to the indication of the first site or the agreement with the first site; wherein the transmission form includes at least One of the following:
在主信道传输第一前导；Transmitting a first preamble on the primary channel;
在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth;
在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth if the primary channel is idle;
在包括主信道的连续预设基本信道带宽内传输第一前导。The first preamble is transmitted within a continuous preset basic channel bandwidth including the primary channel.
本发明实施例中，在调度的资源上不满足预设条件是指：在调度的资源上不满足以下条件的至少之一：In the embodiment of the present invention, the failure to satisfy the preset condition on the scheduled resource means that at least one of the following conditions is not met on the scheduled resource:
载波检测的结果为空闲；The result of carrier detection is idle;
发送功率满足第一站点的要求；The transmission power meets the requirements of the first site;
在随机接入退避为零；The random access backoff is zero;
其中，在调度的资源上不满足所述预设条件时，在调度的资源上不能进行传输。When the preset condition is not met on the scheduled resource, the transmission cannot be performed on the scheduled resource.
本发明实施例中，所述第一前导包括：传统短训练域、传统长训练域、传统信令域、重复的传统信令域、高效信令域。In the embodiment of the present invention, the first preamble includes: a traditional short training domain, a traditional long training domain, a traditional signaling domain, a repeated traditional signaling domain, and an efficient signaling domain.
本发明实施例中，所述传输形式为在主信道传输第一前导时，所述装置还包括：In the embodiment of the present invention, when the first preamble is transmitted on the primary channel, the device further includes:
检测单元，配置为在主信道传输第一前导之前，所述第二站点在所述主信道上进行载波检测；a detecting unit, configured to perform carrier detection on the primary channel before the primary channel transmits the first preamble;
当载波检测结果为空闲时，所述第二站点在所述主信道上传输第一前导；When the carrier detection result is idle, the second station transmits the first preamble on the primary channel;
当载波检测结果为忙时，所述第二站点不能在所述主信道上传输第一 前导。When the carrier detection result is busy, the second station cannot transmit the first on the primary channel. Leading.
本发明实施例中，所述装置还包括：In the embodiment of the present invention, the device further includes:
检测单元，配置为在所述包括主信道的连续预设基本信道带宽内传输第一前导之前，在所述包括主信道的连续预设基本信道带宽上进行载波检测；a detecting unit, configured to perform carrier detection on the continuous preset basic channel bandwidth including the primary channel before transmitting the first preamble in the continuous preset basic channel bandwidth including the primary channel;
当所有基本信道带宽的载波检测结果为空闲时，在所述包括主信道的连续预设基本信道带宽上传输第一前导；当部分基本信道带宽的载波检测结果为忙时，在所述包括主信道的连续预设基本信道带宽上不传输第一前导。Transmitting a first preamble on the continuous preset basic channel bandwidth including the primary channel when the carrier detection result of all the basic channel bandwidths is idle; and when the carrier detection result of the partial basic channel bandwidth is busy, The first preamble is not transmitted on the continuous preset basic channel bandwidth of the channel.
本发明实施例中，当所述传输形式为在空闲的基本信道带宽传输第一前导，或者在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导时，所述装置还包括：In the embodiment of the present invention, when the transmission form is to transmit the first preamble in the idle basic channel bandwidth, or in the case that the primary channel is idle, when the first basic preamble is transmitted in the idle basic channel bandwidth, the apparatus further includes:
指示单元，配置为在MAC实体向PHY实体传递的参数中指示基本信道带宽状态列表。And an indication unit configured to indicate a basic channel bandwidth status list in a parameter that the MAC entity communicates to the PHY entity.
本发明实施例中，所述基本信道带宽状态列表中，每一个基本信道带宽使用1比特来表示对应的基本信道带宽是否允许传输。In the embodiment of the present invention, in the basic channel bandwidth state list, each basic channel bandwidth uses 1 bit to indicate whether the corresponding basic channel bandwidth is allowed to be transmitted.
本发明实施例中，所述PHY实体根据所述MAC实体的指示产生第一前导，并且将所述第一前导在所述基本信道带宽状态列表中指示为允许传输的基本信道带宽上传输。In the embodiment of the present invention, the PHY entity generates a first preamble according to the indication of the MAC entity, and transmits the first preamble in the basic channel bandwidth state list as a basic channel bandwidth that is allowed to be transmitted.
本发明实施例提供的站点，包括上述任意所述的传输装置。The station provided by the embodiment of the present invention includes any of the foregoing transmission devices.
本发明实施例提供的计算机存储介质存储有计算机程序，该计算机程序配置为执行上述传输方法。The computer storage medium provided by the embodiment of the present invention stores a computer program configured to execute the foregoing transmission method.
本发明实施例的技术方案中，第一站点在发送的无线帧中指示第二站点在调度的资源上不满足预设条件时的传输形式；其中，所述传输形式至少包括以下之一：在主信道传输第一前导；在空闲的基本信道带宽传输第 一前导；在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导；在包括主信道的连续预设基本信道带宽内传输第一前导。通过对本发明实施例的实施，既不会干扰本BSS的接收，又可以设置OBSS的NAV，保护本BSS的下一帧传输，减少网络碰撞，提高网络性能。In the technical solution of the embodiment of the present invention, the first station indicates, in the transmitted radio frame, a transmission form when the second station does not meet the preset condition on the scheduled resource, where the transmission form includes at least one of the following: The primary channel transmits the first preamble; in the idle basic channel bandwidth transmission a preamble; transmitting a first preamble in an idle basic channel bandwidth if the primary channel is idle; transmitting a first preamble in a continuous preset basic channel bandwidth including the primary channel. By implementing the embodiment of the present invention, the receiving of the BSS is not interfered with, and the NAV of the OBSS can be set to protect the next frame transmission of the BSS, thereby reducing network collision and improving network performance.
附图说明DRAWINGS
在附图(其不一定是按比例绘制的)中，相似的附图标记可在不同的视图中描述相似的部件。具有不同字母后缀的相似附图标记可表示相似部件的不同示例。附图以示例而非限制的方式大体示出了本文中所讨论的各个实施例。In the drawings, which are not necessarily to scale, the Like reference numerals with different letter suffixes may indicate different examples of similar components. The drawings generally illustrate the various embodiments discussed herein by way of example and not limitation.
图1为OBSS的示意图；Figure 1 is a schematic diagram of OBSS;
图2为160MHz的信道化示意图；2 is a schematic diagram of channelization of 160 MHz;
图3为本发明实施例的密集场景下碰撞的示意图；3 is a schematic diagram of a collision in a dense scene according to an embodiment of the present invention;
图4为本发明实施例的80MHz下的资源分配示意图；4 is a schematic diagram of resource allocation at 80 MHz according to an embodiment of the present invention;
图5为本发明实施例的传输方法的流程示意图一；FIG. 5 is a schematic flowchart 1 of a transmission method according to an embodiment of the present invention;
图6为本发明实施例的传输方法的流程示意图二；6 is a second schematic flowchart of a transmission method according to an embodiment of the present invention;
图7为本发明实施例的传输装置的结构组成示意图一；FIG. 7 is a first schematic structural diagram of a transmission device according to an embodiment of the present invention; FIG.
图8为本发明实施例的传输装置的结构组成示意图二；FIG. 8 is a second schematic structural diagram of a transmission apparatus according to an embodiment of the present invention; FIG.
图9为本发明实施例的STA1和STA2在调度的主信道可以传输，STA3在调度的辅信道不能进行传输，STA3在主信道传输第一前导的示意图；FIG. 9 is a schematic diagram of STA1 and STA2 transmitting on a scheduled primary channel, STA3 being unable to transmit on a scheduled secondary channel, and STA3 transmitting a first preamble on a primary channel according to an embodiment of the present invention;
图10为本发明实施例的第一前导的示意图；FIG. 10 is a schematic diagram of a first preamble according to an embodiment of the present invention; FIG.
图11为本发明实施例的STA1和STA2在调度的主信道不能进行传输，STA3在调度的辅信道不能传输，STA3在主信道传输第一前导的示意图；11 is a schematic diagram of STA1 and STA2 failing to transmit on a scheduled primary channel, STA3 in a scheduled secondary channel cannot be transmitted, and STA3 transmitting a first preamble on a primary channel according to an embodiment of the present invention;
图12为本发明实施例的80MHz情况下，在调度的RU上不能传输时，只在主信道传输的示意图；FIG. 12 is a schematic diagram of transmission only on a primary channel when not transmitted on a scheduled RU according to an embodiment of the present invention; FIG.
图13为本发明实施例的80MHz情况下，在调度的RU上不能传输时， 在空闲的基本信道带宽传输第一前导的示意图；FIG. 13 is a schematic diagram of an embodiment of the present invention, when 80 MHz is not transmitted on a scheduled RU, A schematic diagram of transmitting a first preamble in an idle basic channel bandwidth;
图14为本发明实施例的80MHz情况下，在调度的RU上不能传输时，在在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导的示意图；14 is a schematic diagram of transmitting a first preamble in an idle basic channel bandwidth in a case where the primary channel is idle when the primary channel is idle according to an embodiment of the present invention;
图15为本发明实施例的80MHz情况下，在调度的RU上不能传输时，在在包括主信道的连续预设基本信道带宽内传输第一前导的示意图。FIG. 15 is a schematic diagram of transmitting a first preamble in a continuous preset basic channel bandwidth including a primary channel when the scheduled RU cannot be transmitted in the 80 MHz case according to the embodiment of the present invention.
具体实施方式detailed description
为了能够更加详尽地了解本发明实施例的特点与技术内容，下面结合附图对本发明实施例的实现进行详细阐述，所附附图仅供参考说明之用，并非用来限定本发明实施例。The embodiments of the present invention are described in detail below with reference to the accompanying drawings.
图5为本发明实施例的传输方法的流程示意图一，如图5所示，所述方法包括：FIG. 5 is a schematic flowchart 1 of a transmission method according to an embodiment of the present invention. As shown in FIG. 5, the method includes:
步骤501：第一站点在发送的无线帧中指示第二站点在调度的资源上不满足预设条件时的传输形式。Step 501: The first station indicates, in the transmitted radio frame, a transmission form when the second station does not meet the preset condition on the scheduled resource.
其中，所述传输形式至少包括以下之一：Wherein, the transmission form includes at least one of the following:
在主信道传输第一前导；Transmitting a first preamble on the primary channel;
在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth;
在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth if the primary channel is idle;
在包括主信道的连续预设基本信道带宽内传输第一前导。The first preamble is transmitted within a continuous preset basic channel bandwidth including the primary channel.
上述方案中，所述传输形式还包括不允许传输第一前导。In the above solution, the transmission form further includes not allowing transmission of the first preamble.
本发明实施例中，所述调度的资源是基于触发帧的上行随机接入资源或基于触发帧的确定资源。In the embodiment of the present invention, the scheduled resource is an uplink random access resource based on a trigger frame or a determined resource based on a trigger frame.
上述方案中，在调度的资源上不满足预设条件是指：在调度的资源上不满足预设条件是指：在调度的资源上不满足以下条件的至少之一：In the above solution, the preset condition is not met on the scheduled resource, that is, the preset condition is not met on the scheduled resource, that is, at least one of the following conditions is not met on the scheduled resource:
载波检测的结果为空闲；The result of carrier detection is idle;
发送功率满足第一站点的要求； The transmission power meets the requirements of the first site;
在随机接入退避为零；The random access backoff is zero;
其中，在调度的资源上不满足所述预设条件时，在调度的资源上不能进行传输。When the preset condition is not met on the scheduled resource, the transmission cannot be performed on the scheduled resource.
上述方案中，所述第一站点在所述无线帧中通过1比特或者多比特指示是否采用所述传输形式或者所采用的具体传输形式。In the above solution, the first station indicates whether to adopt the transmission form or a specific transmission format by using 1 bit or multiple bits in the radio frame.
其中，所述第一站点在所述无线帧中通过1比特指示是否采用所述传输形式或者所采用的具体传输形式，包括：The first station indicates, by using 1 bit in the radio frame, whether the transmission form or the specific transmission format is adopted, including:
当所述1比特为第一值时，通过所述1比特指示不允许传输所述第一前导；When the 1 bit is the first value, the first preamble is not allowed to be transmitted by the 1 bit indication;
当所述1比特为第二值时，通过所述1比特指示允许传输所述第一前导；其中，所述允许传输所述第一前导的传输方式为以下之一：在主信道传输第一前导、在空闲的基本信道带宽传输第一前导、在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导、在包括主信道的连续预设基本信道带宽内传输第一前导。When the 1 bit is the second value, the first preamble is allowed to be transmitted by the 1 bit; wherein the transmission mode for allowing the transmission of the first preamble is one of: transmitting the first channel on the primary channel The preamble transmits the first preamble in the idle basic channel bandwidth, transmits the first preamble in the idle basic channel bandwidth, and transmits the first preamble in the continuous preset basic channel bandwidth including the main channel in the case that the primary channel is idle.
所述第一站点在所述无线帧中通过多比特指示是否采用所述传输形式或者所采用的具体传输形式，包括：The first station indicates, by using multiple bits in the radio frame, whether to adopt the transmission form or a specific transmission format, including:
通过所述多比特中各个比特位的各种排列组合，来指示是否采用所述传输形式或者所采用的各种具体传输形式。Whether to adopt the transmission form or various specific transmission forms employed is adopted by various permutation combinations of the individual bits in the multi-bit.
本发明实施例中，所述包含主信道的连续预设基本信道带宽所占用的带宽为以下之一：主20MHz，主40MHz，主80MHz，160MHz。In the embodiment of the present invention, the bandwidth occupied by the continuous preset basic channel bandwidth including the primary channel is one of the following: main 20 MHz, main 40 MHz, main 80 MHz, and 160 MHz.
本发明实施例中，所述第一前导为多用户同时在同一频带发送的相同前导。In the embodiment of the present invention, the first preamble is the same preamble that multiple users simultaneously transmit in the same frequency band.
本发明实施例中，所述第一前导包括：传统短训练域、传统长训练域、传统信令域、重复的传统信令域、高效信令域。In the embodiment of the present invention, the first preamble includes: a traditional short training domain, a traditional long training domain, a traditional signaling domain, a repeated traditional signaling domain, and an efficient signaling domain.
本发明实施例中，所述第一前导以基本信道带宽为单位重复进行发送。 In the embodiment of the present invention, the first preamble is repeatedly transmitted in units of a basic channel bandwidth.
本发明实施例中，所述第一站点发送的无线帧携带所述第一前导需要填写的信息。In the embodiment of the present invention, the radio frame sent by the first station carries information that needs to be filled in by the first preamble.
图6为本发明实施例的传输方法的流程示意图二，如图6所示，所述方法包括：FIG. 6 is a schematic flowchart 2 of a transmission method according to an embodiment of the present invention. As shown in FIG. 6, the method includes:
步骤601：第二站点在调度的资源上不满足预设条件时，按照第一站点的指示或者与第一站点之间的约定，确定传输形式。Step 601: When the second site does not meet the preset condition on the scheduled resource, determine the transmission format according to the indication of the first site or the agreement with the first site.
其中，所述传输形式至少包括以下之一：Wherein, the transmission form includes at least one of the following:
在主信道传输第一前导；Transmitting a first preamble on the primary channel;
在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth;
在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth if the primary channel is idle;
在包括主信道的连续预设基本信道带宽内传输第一前导。The first preamble is transmitted within a continuous preset basic channel bandwidth including the primary channel.
上述方案中，所述传输形式还包括不允许传输第一前导。In the above solution, the transmission form further includes not allowing transmission of the first preamble.
在调度的资源上不满足预设条件是指：在调度的资源上不满足以下条件的至少之一：The failure to satisfy the preset condition on the scheduled resource means that at least one of the following conditions is not met on the scheduled resource:
载波检测的结果为空闲；The result of carrier detection is idle;
发送功率满足第一站点的要求；The transmission power meets the requirements of the first site;
在随机接入退避为零；The random access backoff is zero;
其中，在调度的资源上不满足所述预设条件时，在调度的资源上不能进行传输。When the preset condition is not met on the scheduled resource, the transmission cannot be performed on the scheduled resource.
上述方案中，所述包含主信道的连续预设基本信道带宽所占用的带宽为以下之一：主20MHz，主40MHz，主80MHz，160MHz。In the above solution, the bandwidth occupied by the continuous preset basic channel bandwidth including the primary channel is one of the following: main 20 MHz, main 40 MHz, main 80 MHz, and 160 MHz.
本发明实施例中，所述第一前导包括：传统短训练域、传统长训练域、传统信令域、重复的传统信令域、高效信令域。In the embodiment of the present invention, the first preamble includes: a traditional short training domain, a traditional long training domain, a traditional signaling domain, a repeated traditional signaling domain, and an efficient signaling domain.
本发明实施例中，第二站点按照与第一站点之间的约定，确定传输形式，包括： In the embodiment of the present invention, the second site determines the transmission format according to the agreement with the first site, including:
第二站点根据预定的传输策略，确定传输形式；其中，所述预定传输策略中的传输形式至少包括以下之一：不允许传输第一前导、在主信道传输第一前导、在空闲的基本信道带宽传输第一前导、在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导、在包括主信道的连续预设基本信道带宽内传输第一前导。The second station determines a transmission form according to a predetermined transmission policy, where the transmission form in the predetermined transmission policy includes at least one of: disallowing transmission of the first preamble, transmission of the first preamble on the primary channel, and idle of the basic channel The bandwidth transmits the first preamble, in the case that the primary channel is idle, transmits the first preamble in the idle basic channel bandwidth, and transmits the first preamble in the continuous preset basic channel bandwidth including the primary channel.
本发明实施例中，所述调度的资源是基于触发帧的上行随机接入资源或基于触发帧的确定资源。In the embodiment of the present invention, the scheduled resource is an uplink random access resource based on a trigger frame or a determined resource based on a trigger frame.
本发明实施例中，所述基于触发帧的确定资源是：指示分配给特定站点的资源。In the embodiment of the present invention, the determining resource based on the trigger frame is: indicating a resource allocated to a specific site.
当所述传输形式为在主信道传输第一前导时，所述方法还包括：When the transmission form is to transmit the first preamble on the primary channel, the method further includes:
在主信道传输第一前导之前，所述第二站点在所述主信道上进行载波检测；Before the primary channel transmits the first preamble, the second station performs carrier detection on the primary channel;
当载波检测结果为空闲时，所述第二站点在所述主信道上传输第一前导；When the carrier detection result is idle, the second station transmits the first preamble on the primary channel;
当载波检测结果为忙时，所述第二站点不能在所述主信道上传输第一前导。When the carrier detection result is busy, the second station cannot transmit the first preamble on the primary channel.
本发明实施例中，所述在包括主信道的连续预设基本信道带宽内传输第一前导，包括：In the embodiment of the present invention, the transmitting the first preamble in a continuous preset basic channel bandwidth including a primary channel includes:
在所述包括主信道的连续预设基本信道带宽内传输第一前导之前，所述第二站点在所述包括主信道的连续预设基本信道带宽上进行载波检测；Before transmitting the first preamble in the continuous preset basic channel bandwidth including the primary channel, the second station performs carrier detection on the continuous preset basic channel bandwidth including the primary channel;
当所有基本信道带宽的载波检测结果为空闲时，所述第二站点在所述包括主信道的连续预设基本信道带宽上传输第一前导；When the carrier detection result of all the basic channel bandwidths is idle, the second station transmits the first preamble on the continuous preset basic channel bandwidth including the primary channel;
当部分基本信道带宽的载波检测结果为忙时，所述第二站点在所述包括主信道的连续预设基本信道带宽上不传输第一前导。When the carrier detection result of the partial basic channel bandwidth is busy, the second station does not transmit the first preamble on the continuous preset basic channel bandwidth including the primary channel.
本发明实施例中，当所述传输形式为在空闲的基本信道带宽传输第一 前导，或者在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导时，所述方法还包括：In the embodiment of the present invention, when the transmission form is the first transmission in the idle basic channel bandwidth The preamble, or in the case that the primary channel is idle, when the idle primary channel bandwidth transmits the first preamble, the method further includes:
所述第二站点在MAC实体向PHY实体传递的参数中指示基本信道带宽状态列表。The second station indicates a list of basic channel bandwidth states in parameters passed by the MAC entity to the PHY entity.
本发明实施例中，所述基本信道带宽状态列表中，每一个基本信道带宽使用1比特来表示对应的基本信道带宽是否允许传输。In the embodiment of the present invention, in the basic channel bandwidth state list, each basic channel bandwidth uses 1 bit to indicate whether the corresponding basic channel bandwidth is allowed to be transmitted.
本发明实施例中，当所述传输形式为在主信道传输第一前导，或者在包括主信道的连续预设基本信道带宽内传输第一前导时，所述第二站点在介质访问控制MAC实体向物理PHY实体传递的参数中指示第一前导所占用的带宽大小信息。In the embodiment of the present invention, when the transmission form is to transmit the first preamble on the primary channel, or to transmit the first preamble in the continuous preset basic channel bandwidth including the primary channel, the second station is in the medium access control MAC entity. The bandwidth size information occupied by the first preamble is indicated in the parameter passed to the physical PHY entity.
本发明实施例中，所述PHY实体根据所述MAC实体的指示产生第一前导，并且将所述第一前导在所述基本信道带宽状态列表中指示为允许传输的基本信道带宽上传输。In the embodiment of the present invention, the PHY entity generates a first preamble according to the indication of the MAC entity, and transmits the first preamble in the basic channel bandwidth state list as a basic channel bandwidth that is allowed to be transmitted.
本发明实施例中，所述方法还包括：In the embodiment of the present invention, the method further includes:
所述第二站点和所述第一站点在关联时，协商是否支持当所述第二站点在调度的资源上不满足预设条件时的传输方式。When the second site and the first site are associated, the negotiation determines whether the transmission mode when the second site does not meet the preset condition on the scheduled resource is supported.
图7为本发明实施例的传输装置的结构组成示意图一，如图7所示，所述装置包括：FIG. 7 is a first schematic structural diagram of a transmission device according to an embodiment of the present invention. As shown in FIG. 7, the device includes:
指示单元71，配置为在发送的无线帧中指示第二站点在调度的资源上不满足预设条件时的传输形式；其中，所述传输形式至少包括以下之一：The indicating unit 71 is configured to indicate, in the sent radio frame, a transmission form when the second station does not meet the preset condition on the scheduled resource, where the transmission form includes at least one of the following:
在主信道传输第一前导；Transmitting a first preamble on the primary channel;
在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth;
在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth if the primary channel is idle;
在包括主信道的连续预设基本信道带宽内传输第一前导。The first preamble is transmitted within a continuous preset basic channel bandwidth including the primary channel.
上述方案中，所述传输形式还包括不允许传输第一前导。 In the above solution, the transmission form further includes not allowing transmission of the first preamble.
在调度的资源上不满足预设条件是指：在调度的资源上不满足以下条件的至少之一：The failure to satisfy the preset condition on the scheduled resource means that at least one of the following conditions is not met on the scheduled resource:
载波检测的结果为空闲；The result of carrier detection is idle;
发送功率满足第一站点的要求；The transmission power meets the requirements of the first site;
在随机接入退避为零；The random access backoff is zero;
其中，在调度的资源上不满足所述预设条件时，在调度的资源上不能进行传输。When the preset condition is not met on the scheduled resource, the transmission cannot be performed on the scheduled resource.
所述第一站点在所述无线帧中通过1比特或者多比特指示是否采用所述传输形式或者所采用的具体传输形式。The first station indicates whether to adopt the transmission form or a specific transmission form by using 1 bit or multiple bits in the radio frame.
当所述1比特为第一值时，通过所述1比特指示不允许传输所述第一前导；When the 1 bit is the first value, the first preamble is not allowed to be transmitted by the 1 bit indication;
当所述1比特为第二值时，通过所述1比特指示允许传输所述第一前导；其中，所述允许传输所述第一前导的传输方式为以下之一：在主信道传输第一前导、在空闲的基本信道带宽传输第一前导、在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导、在包括主信道的连续预设基本信道带宽内传输第一前导。When the 1 bit is the second value, the first preamble is allowed to be transmitted by the 1 bit; wherein the transmission mode for allowing the transmission of the first preamble is one of: transmitting the first channel on the primary channel The preamble transmits the first preamble in the idle basic channel bandwidth, transmits the first preamble in the idle basic channel bandwidth, and transmits the first preamble in the continuous preset basic channel bandwidth including the main channel in the case that the primary channel is idle.
通过所述多比特中各个比特位的各种排列组合，来指示是否采用所述传输形式或者所采用的各种具体传输形式。Whether to adopt the transmission form or various specific transmission forms employed is adopted by various permutation combinations of the individual bits in the multi-bit.
所述第一前导为多用户同时在同一频带发送的相同前导。The first preamble is the same preamble that multiple users simultaneously transmit in the same frequency band.
所述第一前导包括：传统短训练域、传统长训练域、传统信令域、重复的传统信令域、高效信令域。The first preamble includes: a traditional short training domain, a traditional long training domain, a traditional signaling domain, a repeated traditional signaling domain, and an efficient signaling domain.
所述第一前导以基本信道带宽为单位重复进行发送。The first preamble is repeatedly transmitted in units of a basic channel bandwidth.
在发送的所述无线帧携带所述第一前导需要填写的信息。The wireless frame that is sent carries information that needs to be filled in by the first preamble.
本领域技术人员应当理解，图7所示的传输装置中的各单元的实现功能可参照前述传输方法的相关描述而理解。图7所示的传输装置中的各单 元的功能可通过运行于处理器上的程序而实现，也可通过具体的逻辑电路而实现。It will be understood by those skilled in the art that the implementation functions of the units in the transmission apparatus shown in FIG. 7 can be understood by referring to the related description of the foregoing transmission method. Each of the transmission devices shown in Figure 7 The function of the element can be realized by a program running on the processor, or can be realized by a specific logic circuit.
在实际应用中，所述传输装置中的各个单元所实现的功能，均可由位于传输装置中的中央处理器(CPU，Central Processing Unit)、或微处理器(MPU，Micro Processor Unit)、或数字信号处理器(DSP，Digital Signal Processor)、或现场可编程门阵列(FPGA，Field Programmable Gate Array)等实现。In practical applications, the functions implemented by each unit in the transmission device may be implemented by a central processing unit (CPU) or a microprocessor (MPU, Micro Processor Unit) or a digital device located in the transmission device. Implemented by a signal processor (DSP, Digital Signal Processor) or a Field Programmable Gate Array (FPGA).
图8为本发明实施例的传输装置的结构组成示意图二，如图8所示，所述装置包括：FIG. 8 is a second schematic structural diagram of a transmission apparatus according to an embodiment of the present invention. As shown in FIG. 8, the apparatus includes:
传输形式确定单元81，配置为第二站点在调度的资源上不满足预设条件时，按照第一站点的指示或者与第一站点之间的约定，确定传输形式；其中，所述传输形式至少包括以下之一：The transmission form determining unit 81 is configured to: when the second site does not meet the preset condition on the scheduled resource, determine the transmission form according to the indication of the first site or the agreement with the first site; wherein the transmission form is at least Includes one of the following:
在主信道传输第一前导；Transmitting a first preamble on the primary channel;
在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth;
在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth if the primary channel is idle;
在包括主信道的连续预设基本信道带宽内传输第一前导。The first preamble is transmitted within a continuous preset basic channel bandwidth including the primary channel.
上述方案中，所述传输形式还包括不允许传输第一前导。In the above solution, the transmission form further includes not allowing transmission of the first preamble.
在调度的资源上不满足预设条件是指：在调度的资源上不满足以下条件的至少之一：The failure to satisfy the preset condition on the scheduled resource means that at least one of the following conditions is not met on the scheduled resource:
载波检测的结果为空闲；The result of carrier detection is idle;
发送功率满足第一站点的要求；The transmission power meets the requirements of the first site;
在随机接入退避为零；The random access backoff is zero;
其中，在调度的资源上不满足所述预设条件时，在调度的资源上不能进行传输。When the preset condition is not met on the scheduled resource, the transmission cannot be performed on the scheduled resource.
所述第一前导包括：传统短训练域、传统长训练域、传统信令域、重 复的传统信令域、高效信令域。The first preamble includes: a traditional short training domain, a traditional long training domain, a traditional signaling domain, and a heavy Complex traditional signaling domain, efficient signaling domain.
本发明实施例中，当所述传输形式为在主信道传输第一前导时，所述装置还包括：In the embodiment of the present invention, when the transmission form is to transmit the first preamble on the primary channel, the device further includes:
检测单元82，配置为在主信道传输第一前导之前，所述第二站点在所述主信道上进行载波检测；The detecting unit 82 is configured to perform carrier detection on the primary channel before the primary channel transmits the first preamble;
当载波检测结果为空闲时，所述第二站点在所述主信道上传输第一前导；When the carrier detection result is idle, the second station transmits the first preamble on the primary channel;
当载波检测结果为忙时，所述第二站点不能在所述主信道上传输第一前导。When the carrier detection result is busy, the second station cannot transmit the first preamble on the primary channel.
所述第一前导携带的信令通过第一站点发送的无线帧指示。The signaling carried by the first preamble is indicated by a radio frame sent by the first station.
所述调度的资源是基于触发帧的上行随机接入资源或基于触发帧的确定资源。The scheduled resource is an uplink random access resource based on a trigger frame or a determined resource based on a trigger frame.
所述基于触发帧的确定资源是：指示分配给特定站点的资源。The determining resource based on the trigger frame is: indicating a resource allocated to a specific site.
所述装置还包括：The device also includes:
检测单元82，配置为在所述包括主信道的连续预设基本信道带宽内传输第一前导之前，在所述包括主信道的连续预设基本信道带宽上进行载波检测；The detecting unit 82 is configured to perform carrier detection on the continuous preset basic channel bandwidth including the primary channel before transmitting the first preamble in the continuous preset basic channel bandwidth including the primary channel;
当所有基本信道带宽的载波检测结果为空闲时，在所述包括主信道的连续预设基本信道带宽上传输第一前导；当部分基本信道带宽的载波检测结果为忙时，在所述包括主信道的连续预设基本信道带宽上不传输第一前导。Transmitting a first preamble on the continuous preset basic channel bandwidth including the primary channel when the carrier detection result of all the basic channel bandwidths is idle; and when the carrier detection result of the partial basic channel bandwidth is busy, The first preamble is not transmitted on the continuous preset basic channel bandwidth of the channel.
当所述传输形式为在空闲的基本信道带宽传输第一前导，或者在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导时，所述装置还包括：When the transmission form is to transmit the first preamble in the idle basic channel bandwidth, or in the case that the primary channel is idle, when the first basic preamble is transmitted in the idle basic channel bandwidth, the apparatus further includes:
指示单元83，配置为在MAC实体向PHY实体传递的参数中指示基本 信道带宽状态列表。The indicating unit 83 is configured to indicate the basic in the parameter passed by the MAC entity to the PHY entity A list of channel bandwidth states.
所述基本信道带宽状态列表中，每一个基本信道带宽使用1比特来表示对应的基本信道带宽是否允许传输。In the basic channel bandwidth state list, each basic channel bandwidth uses 1 bit to indicate whether the corresponding basic channel bandwidth is allowed to be transmitted.
所述PHY实体根据所述MAC实体的指示产生第一前导，并且将所述第一前导在所述基本道带带宽状态列表中指示为允许传输的基本信道带宽上传输。The PHY entity generates a first preamble according to the indication of the MAC entity, and transmits the first preamble in the basic channel band bandwidth status indication as a basic channel bandwidth allowed to be transmitted.
本领域技术人员应当理解，图8所示的传输装置中的各单元的实现功能可参照前述传输方法的相关描述而理解。图8所示的传输装置中的各单元的功能可通过运行于处理器上的程序而实现，也可通过具体的逻辑电路而实现。It will be understood by those skilled in the art that the implementation functions of the units in the transmission apparatus shown in FIG. 8 can be understood by referring to the related description of the foregoing transmission method. The functions of the units in the transmission device shown in FIG. 8 can be realized by a program running on the processor, or can be realized by a specific logic circuit.
在实际应用中，所述传输装置中的各个单元所实现的功能，均可由位于传输装置中的CPU、或MPU、或DSP、或FPGA等实现。In practical applications, the functions implemented by the various units in the transmission device may be implemented by a CPU, an MPU, or a DSP, or an FPGA or the like located in the transmission device.
本发明实施例还提供了一种站点，所述站点包括图7所示的传输装置或者图8所示的传输装置。The embodiment of the present invention further provides a station, which includes the transmission device shown in FIG. 7 or the transmission device shown in FIG. 8.
下面结合具体应用场景对本发明实施例的传输方法进行详细阐述。The transmission method of the embodiment of the present invention is described in detail below in conjunction with a specific application scenario.
应用场景一 Application scenario 1
AP1和STA1，STA2和STA3组成一个BSS，AP2和STA4组成一个BSS，两个BSS工作在相同的频段，工作带宽为40MHz，主信道(主20MHz)是对齐的，如图3所示。两个BSS内可能还有其他站点，这里不再列举。AP1竞争到信道发送触发帧，调度STA1、STA2和STA3发送。其中，STA1和STA2对应的RU在主信道，STA3对应的RU在辅信道(辅20MHz)。AP1 and STA1, STA2 and STA3 form one BSS, AP2 and STA4 form one BSS, two BSSs work in the same frequency band, the working bandwidth is 40MHz, and the main channel (main 20MHz) is aligned, as shown in Figure 3. There may be other sites in the two BSSs, which are not listed here. AP1 contends to the channel to send a trigger frame, and schedules STA1, STA2, and STA3 to transmit. The RU corresponding to STA1 and STA2 is on the primary channel, and the RU corresponding to STA3 is on the secondary channel (secondary 20 MHz).
AP在发送的触发帧中使用1比特指示站点是否允许在分配的RU不能进行传输时，在主信道传输第一前导，该1比特命名为PREAMBLE_ALLOWED。AP发送触发帧并且将PREAMBLE_ALLOWED置为1，表示允许在站点在分配的RU上不满足预设条件时，可以在主信道 传输第一前导。STA3在触发帧和上行响应帧之间的帧间间隔(SIFS)进行物理载波检测和虚拟载波检测，其中物理载波检测是进行的能量检测，能量检测判断信道忙闲的门限可以是系统预设值，可以是和AP协商的值，也可以是AP广播的值。The AP uses 1 bit in the transmitted trigger frame to indicate whether the station allows the first preamble to be transmitted on the primary channel when the allocated RU is unable to transmit. The 1 bit is named PREAMBLE_ALLOWED. The AP sends a trigger frame and sets PREAMBLE_ALLOWED to 1, indicating that the primary channel can be allowed when the station does not meet the preset condition on the assigned RU. The first preamble is transmitted. The STA3 performs physical carrier detection and virtual carrier detection in the interframe space (SIFS) between the trigger frame and the uplink response frame, wherein the physical carrier detection is the energy detection performed, and the energy detection threshold for determining the busy state of the channel may be the system preset value. It can be the value negotiated with the AP or the value broadcast by the AP.
STA3在AP分配给自己的RU上，进行载波检测，如果载波检测结果忙，那么STA3就不能在AP分配给自己的RU上进行传输，这个时候STA3通过AP的信令指示知道AP允许自己在分配的资源不能传输时，可以在主信道进行传输。STA3在主信道传输第一前导，其中第一前导和STA1和STA2在主信道上传输的第一前导完全一样，而且占用的带宽一致，发送时刻相同。具体到11ax中，其中第一前导包括传统短训练域(L-STF)，传统长训练域(L-LTF)，传统信令域(L-SIG)，重复的传统信令域(Repeat-L-SIG)，高效信令域(HE-SIG)，如图10所示。第一前导是在主信道整个带宽进行发送的。STA3 performs carrier detection on the RU that the AP allocates to itself. If the carrier detection result is busy, STA3 cannot transmit on the RU allocated by the AP to itself. At this time, STA3 knows that the AP allows itself to be allocated through the signaling indication of the AP. When the resources cannot be transmitted, they can be transmitted on the primary channel. The STA3 transmits the first preamble on the primary channel, where the first preamble and the first preamble transmitted by STA1 and STA2 on the primary channel are exactly the same, and the occupied bandwidth is the same, and the transmission time is the same. Specifically, in 11ax, the first preamble includes a traditional short training domain (L-STF), a traditional long training domain (L-LTF), a traditional signaling domain (L-SIG), and a repeated traditional signaling domain (Repeat-L). -SIG), High Efficiency Signaling Domain (HE-SIG), as shown in Figure 10. The first preamble is transmitted over the entire bandwidth of the primary channel.
还可能STA3在AP分配给自己的RU上载波检测的结果为空闲，但是STA3能够发送的功率不满足AP的要求，不能进行发送。STA3通过AP的信令指示知道AP允许自己在分配的资源不能传输时，可以在主信道进行传输。It is also possible that the result of the carrier detection on the STA allocated by the STA to the AP is idle, but the power that the STA3 can transmit does not meet the requirements of the AP and cannot be transmitted. STA3 knows through the signaling indication of the AP that the AP allows itself to transmit on the primary channel when the allocated resources cannot be transmitted.
STA3在发送第一前导前还可以查看主信道的载波检测结果，如果主信道的物理载波检测和虚拟载波检测结果为信道空闲，则STA3在主信道发送第一前导。否则，STA3在主信道不发送第一前导。The STA3 can also check the carrier detection result of the primary channel before sending the first preamble. If the physical carrier detection and the virtual carrier detection result of the primary channel are the channel idle, the STA3 sends the first preamble on the primary channel. Otherwise, STA3 does not transmit the first preamble on the primary channel.
STA1和STA2在主信道发送之前，也需要进行载波检测。如果载波检测的结果为空闲，那么STA1和STA2在主信道发送第一前导，然后，STA1和STA2在所对应的RU上发送第二前导和数据部分。其中，第二前导和数据部分对应的资源为AP分配给该用户的资源。在11ax中，其中第二前导包括高效短训练域(HE-STF)和高效长序列域(HE-LTF)，如图9所示。 STA1 and STA2 also need to perform carrier detection before the primary channel is transmitted. If the result of the carrier detection is idle, then STA1 and STA2 transmit the first preamble on the primary channel, and then STA1 and STA2 transmit the second preamble and data portion on the corresponding RU. The resource corresponding to the second preamble and the data part is a resource allocated by the AP to the user. In 11ax, the second preamble includes a high efficiency short training field (HE-STF) and a high efficiency long sequence field (HE-LTF), as shown in FIG.
STA1和STA2在主信道发送之前，也需要进行载波检测。如果载波检测的结果为忙，那么STA1和STA2在主信道不进行发送，如图11所示。STA1 and STA2 also need to perform carrier detection before the primary channel is transmitted. If the result of the carrier detection is busy, STA1 and STA2 do not transmit on the primary channel, as shown in FIG.
AP和STA1、STA2、STA3在关联的过程中还可以进行能力协商，STA1、STA2、STA3通知AP是否支持在AP调度的RU上不满足预设条件，即不能发送时的传输形式。AP在发送的触发帧中指示站点是否可以在调度的资源上不能进行传输时，主信道进行发送第一前导。The AP and the STA1, the STA2, and the STA3 can perform the capability negotiation in the process of the association. The STA1, the STA2, and the STA3 notify the AP whether the AP does not satisfy the preset condition, that is, the transmission mode when the AP cannot be sent. When the AP indicates in the triggered frame that the station can transmit on the scheduled resource, the primary channel sends the first preamble.
STA4在主信道收到STA3发送的第一前导，并且接收正确，可以提前终止接收，根据第一前导中携带信道预约信息更新NAV。如果不终止接收，继续接收后续部分，但是因为没有相应的数据部分，会产生一个接收错误的结束原语，并且根据第一前导中信道的信道预约信息更新NAV。这样就将STA3周围的信道保护了起来，等下次AP1给STA3调度RU就会避免来自STA4的干扰。The STA4 receives the first preamble sent by the STA3 on the primary channel, and receives the correct, and can terminate the reception in advance, and update the NAV according to the channel reservation information carried in the first preamble. If the reception is not terminated, the subsequent portion is continued to be received, but since there is no corresponding data portion, an end primitive of the reception error is generated, and the NAV is updated according to the channel reservation information of the channel in the first preamble. In this way, the channel around STA3 is protected, and the next time AP1 schedules the RU to STA3, it avoids interference from STA4.
应用场景二 Application scenario 2
AP1和STA1，STA2和STA3组成一个BSS，AP2和STA4组成一个BSS，如图2所示。两个BSS工作在相同的频段，工作带宽为80MHz，主信道是对齐的，主信道为信道编号最小的基本信道单位。两个BSS内可能还有其他站点，这里不再列举。AP1竞争到信道发送触发帧，调度STA1,STA2和STA3发送。其中，STA1对应的RU在主信道，STA2对应的RU在辅信道上，STA3对应的RU在辅40MHz其中一个20MHz信道上，如图4所示。AP1 and STA1, STA2 and STA3 form a BSS, and AP2 and STA4 form a BSS, as shown in Figure 2. The two BSSs operate in the same frequency band, the working bandwidth is 80 MHz, the primary channel is aligned, and the primary channel is the basic channel unit with the smallest channel number. There may be other sites in the two BSSs, which are not listed here. AP1 contends to the channel to send a trigger frame, and schedules STA1, STA2, and STA3 to transmit. The RU corresponding to STA1 is on the primary channel, the RU corresponding to STA2 is on the secondary channel, and the RU corresponding to STA3 is on one of the 20 MHz channels of the secondary 40 MHz, as shown in FIG. 4 .
AP在发送的触发帧中通过1比特指示出可以传输方式的一种，表示的含义为：1比特的一个状态(比如这个比特置为1)，则表示允许使用下面传输方式之一传输第一前导：在主信道传输第一前导；在空闲的基本信道带宽传输第一前导；在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导；在包括主信道的连续预设基本信道带宽内传输第一前导。1比特的另一个状态(比如这个比特置为0)，表示不允许传输第一前导。 The AP indicates one of the transmittable modes by one bit in the transmitted trigger frame, and the meaning of the representation is: a state of 1 bit (such as this bit is set to 1), indicating that the first transmission is allowed to be transmitted using one of the following transmission modes. Preamble: transmitting a first preamble on the primary channel; transmitting a first preamble in an idle basic channel bandwidth; transmitting a first preamble in an idle basic channel bandwidth if the primary channel is idle; and continuously pre-establishing a basic channel in the primary channel including the primary channel The first preamble is transmitted within the bandwidth. Another state of 1 bit (such as this bit is set to 0) means that the first preamble is not allowed to be transmitted.
指示的为允许在分配的RU上判断不能进行传输时，在主信道传输第一前导。STA2在触发帧和上行响应帧之间的帧间间隔(SIFS)进行物理载波检测和虚拟载波检测，其中物理载波检测是进行的能量检测，能量检测判断信道忙闲的门限可以是系统预设值，可以是和AP协商的值，也可以是AP广播的值。The indication is to allow the first preamble to be transmitted on the primary channel when it is judged that the transmission cannot be performed on the assigned RU. The STA2 performs physical carrier detection and virtual carrier detection in the interframe space (SIFS) between the trigger frame and the uplink response frame, wherein the physical carrier detection is performed energy detection, and the energy detection threshold for determining the busy state of the channel may be a system preset value. It can be the value negotiated with the AP or the value broadcast by the AP.
STA2载波检测的结果为空闲时，则STA2在分配的RU传输数据。When the result of the STA2 carrier detection is idle, STA2 transmits data in the allocated RU.
STA2载波检测的结果是信道为忙，STA2在AP分配给自己的RU上不能进行传输，如果STA2载波检测的结果为空闲，但是发送功率不满足AP的要求，STA2在AP分配给自己的RU上也不能进行传输。这个时候STA2通过AP的信令指示知道AP允许自己在AP分配给自己的RU不能传输时，可以在主信道进行传输。STA2在主信道传输第一前导，其中第一前导包括传统短训练域，传统长训练域，传统信令域，重复的传统信令域，高效信令域，如图10所示。第一前导是在主信道整个带宽进行发送的。STA2在发送第一前导前还可以查看主信道的载波检测结果，如果主信道的物理载波检测和虚拟载波检测结果为信道空闲，则STA2在主信道发送第一前导。否则，STA2在主信道不发送任何信号。As a result of the STA2 carrier detection, the channel is busy, and STA2 cannot transmit on the RU that the AP allocates to itself. If the STA2 carrier detection result is idle, but the transmission power does not meet the requirements of the AP, STA2 is allocated to the AR by the AP. It is also not possible to transfer. At this time, STA2 knows through the signaling indication of the AP that the AP allows itself to transmit on the primary channel when the AP assigned to the AP cannot transmit. STA2 transmits a first preamble on the primary channel, where the first preamble includes a traditional short training domain, a traditional long training domain, a traditional signaling domain, a repeated conventional signaling domain, and an efficient signaling domain, as shown in FIG. The first preamble is transmitted over the entire bandwidth of the primary channel. The STA2 can also check the carrier detection result of the primary channel before sending the first preamble. If the physical carrier detection and the virtual carrier detection result of the primary channel are the channel idle, the STA2 sends the first preamble on the primary channel. Otherwise, STA2 does not send any signal on the primary channel.
STA3载波检测的结果是信道为忙或者发送功率不满足AP的要求。STA3在AP分配给自己的的RU上不能进行传输，这个时候STA3可以在主信道传输第一前导，其中第一前导包括传统短训练域，传统长训练域，传统信令域，重复的传统信令域，高效信令域，如图10所示。第一前导是在主信道整个带宽进行发送的。The result of STA3 carrier detection is that the channel is busy or the transmission power does not meet the requirements of the AP. STA3 cannot transmit on the RU allocated by the AP to itself. At this time, STA3 can transmit the first preamble on the primary channel, where the first preamble includes the traditional short training domain, the traditional long training domain, the traditional signaling domain, and the repeated traditional letter. The domain, the efficient signaling domain, is shown in Figure 10. The first preamble is transmitted over the entire bandwidth of the primary channel.
STA3在发送第一前导前查看主信道的载波检测结果，如果主信道的载波检测结果为空闲，则STA3在主信道发送第一前导。否则，STA3在主信道不发送任何信号。STA3 checks the carrier detection result of the primary channel before transmitting the first preamble, and if the carrier detection result of the primary channel is idle, STA3 sends the first preamble on the primary channel. Otherwise, STA3 does not send any signal on the primary channel.
STA1在主信道发送之前，也需要进行载波检测。如果载波检测的结果 为忙，那么STA1在主信道不进行发送。STA1如果载波检测结果为空闲，则STA1和在主信道发送第一前导，然后，STA1在所对应的RU上发送第二前导和数据部分。其中，第二前导和数据部分对应的资源为AP分配给该用户的资源。在11ax中，第二前导包括高效短训练域(HE-STF)和高效长序列域(HE-LTF)。STA1 also needs to perform carrier detection before the primary channel is transmitted. If the result of carrier detection To be busy, STA1 does not transmit on the primary channel. STA1 If the carrier detection result is idle, STA1 transmits the first preamble on the primary channel, and then STA1 transmits the second preamble and data part on the corresponding RU. The resource corresponding to the second preamble and the data part is a resource allocated by the AP to the user. In 11ax, the second preamble includes an efficient short training field (HE-STF) and a high efficiency long sequence domain (HE-LTF).
图12是指示的为允许在分配的RU上判断不能进行传输时，在主信道传输第一前导的情况下，STA1判断可以在分配的RU(主信道)进行传输，STA2和STA3判断在分配的RU不能传输，但是STA3判断可以在主信道传输第一前导的一个示意图。12 is an indication that, in order to allow the transmission to be determined on the allocated RU, in the case where the primary channel transmits the first preamble, STA1 judges that the transmission can be performed on the allocated RU (primary channel), and STA2 and STA3 determine that the assignment is in progress. The RU cannot transmit, but STA3 judges that a schematic diagram of the first preamble can be transmitted on the primary channel.
AP在发送的触发帧中指示站点允许在分配的RU不能进行传输时，在空闲的基本信道带宽传输第一前导。The AP indicates in the triggered frame that the station allows the first preamble to be transmitted in the idle basic channel bandwidth when the allocated RU is unable to transmit.
STA2在分配的RU上进行载波检测，载波检测结果为忙，或者发送功率不满足AP要求，STA2在AP分配给自己的RU上不能进行传输。STA2通过触发帧的指示知道可以在空闲的基本信道带宽传输第一前导。STA2的MAC实体向PHY实体传递的原语中，需指示可以传输的基本信道带宽的列表，每1比特表示对应基本信道带宽是否可以传输第一前导。比如STA2在主信道的载波检测结果为空闲，在AP分给STA2的RU对应的辅信道为忙，在辅40MHz的检测结果为第一个基本信道单位为空闲，第二个信道单位为忙，则STA2的MAC实体向PHY实体传递的原语中，指示的基本信道带宽列表为1010(置1表示允许传输，置0表示不允许传输)，其中“1010”中，从左到右，对应低信道编号基本信道带宽到高信道编号基本信道带宽，最左边的1表示信道编号最小基本信道带宽，最右边的0表示最高基本信道带宽。STA2的PHY实体在主信道和辅40MHz的低信道编号20MHz传输第一前导。STA2 performs carrier detection on the allocated RU. The carrier detection result is busy, or the transmission power does not meet the AP requirement. STA2 cannot transmit on the RU allocated by the AP to itself. STA2 knows by the indication of the trigger frame that the first preamble can be transmitted in the idle basic channel bandwidth. The primitive transmitted by the MAC entity of STA2 to the PHY entity needs to indicate a list of basic channel bandwidths that can be transmitted, and each bit indicates whether the corresponding basic channel bandwidth can transmit the first preamble. For example, the carrier detection result of STA2 on the primary channel is idle, and the secondary channel corresponding to the RU allocated to STA2 in the AP is busy. The detection result in the secondary 40 MHz is that the first basic channel unit is idle, and the second channel unit is busy. Then, in the primitive transmitted by the MAC entity of STA2 to the PHY entity, the indicated basic channel bandwidth list is 1010 (set to 1 to allow transmission, and 0 to indicate that transmission is not allowed), where "1010", from left to right, corresponds to low The channel number is the basic channel bandwidth to the high channel number basic channel bandwidth, the leftmost 1 indicates the channel number minimum basic channel bandwidth, and the rightmost 0 indicates the highest basic channel bandwidth. The PHY entity of STA2 transmits the first preamble on the primary channel and the low channel number 20 MHz of the secondary 40 MHz.
STA3在分配的RU上进行载波检测，载波检测结果为忙或者发送功率 不满足AP要求，STA3在AP分配给自己的的RU上不能进行传输。STA3通过触发帧的指示知道可以在空闲的基本信道带宽传输第一前导。STA3 performs carrier detection on the allocated RU, and the carrier detection result is busy or transmission power. If the AP requirements are not met, STA3 cannot transmit on the RU that the AP assigns to itself. STA3 knows by the indication of the trigger frame that the first preamble can be transmitted in the idle basic channel bandwidth.
STA3的MAC实体向PHY实体传递的原语中，需指示可以传输的基本信道带宽的列表或者称为比图。比如STA3在主信道的载波检测结果为忙，在辅信道载波检测结果为闲，在辅40MHz的检测结果为第一个基本信道单位为忙，第二个信道单位为忙，则STA3的MAC实体向PHY实体传递的原语中，指示的基本信道带宽比特图为0100。STA3只在辅信道传输第一前导。In the primitive passed by the MAC entity of STA3 to the PHY entity, a list of basic channel bandwidths that can be transmitted or a comparison map is indicated. For example, the carrier detection result of STA3 on the primary channel is busy, the detection result of the secondary channel carrier is idle, and the detection result of the secondary 40 MHz is that the first basic channel unit is busy, and the second channel unit is busy, the MAC entity of STA3 is In the primitive passed to the PHY entity, the indicated base channel bandwidth bitmap is 0100. STA3 transmits the first preamble only on the secondary channel.
STA1在AP分配给自己的RU上判断如果可以传输,则STA1在AP分配的资源对应的基本信道带宽上传输第一前导，在AP分配的资源上传输第二前导和数据部分。STA1判断不能进行传输后，可以判断其他所有基本信道带宽的状态。STA1的MAC实体向PHY实体传递的原语中，需指示可以传输的基本信道带宽的列表，每1比特表示对应基本信道带宽是否可以传输第一前导。比如STA1在主信道的载波检测结果为忙，辅信道载波检测结果为忙，在辅40MHz的检测结果为第一个基本信道单位为空闲，第二个信道单位为忙，则STA2的MAC实体向PHY实体传递的原语中，指示的基本信道带宽列表为0010。STA1只在辅40MHz的第一个基本信道单位(低信道编号)传输第一前导。The STA1 determines, on the RU allocated to the AP, that if it can transmit, the STA1 transmits the first preamble on the basic channel bandwidth corresponding to the resource allocated by the AP, and transmits the second preamble and the data part on the resource allocated by the AP. After STA1 judges that transmission cannot be performed, it can judge the state of all other basic channel bandwidths. The primitive transmitted by the MAC entity of STA1 to the PHY entity needs to indicate a list of basic channel bandwidths that can be transmitted, and each bit indicates whether the corresponding basic channel bandwidth can transmit the first preamble. For example, the carrier detection result of STA1 on the primary channel is busy, and the detection result of the secondary channel carrier is busy. When the detection result of the secondary 40 MHz is that the first basic channel unit is idle, and the second channel unit is busy, the MAC entity of STA2 is In the primitive passed by the PHY entity, the indicated basic channel bandwidth list is 0010. STA1 transmits the first preamble only in the first basic channel unit (low channel number) of the secondary 40 MHz.
图13为指示站点允许在分配的RU不能进行传输时，在空闲的基本信道带宽传输第一前导的情况下，STA1判断可以在分配的RU(主信道)进行传输，STA2和STA3判断在分配的RU不能传输，但是STA2判断主信道和辅40MHz的第一个20MHz(低信道编号)可以传输第一前导，STA3判断在主信道可以传输第一前导的示意图。13 is a diagram indicating that the station allows the first preamble to be transmitted in the idle basic channel bandwidth when the allocated RU is unable to transmit, STA1 judges that the transmission can be performed on the allocated RU (primary channel), and STA2 and STA3 determine that the assignment is in progress. The RU cannot transmit, but STA2 judges that the first 20 MHz (low channel number) of the primary channel and the secondary 40 MHz can transmit the first preamble, and STA3 judges that the first preamble can be transmitted on the primary channel.
AP在发送的触发帧中指示站点是否允许在分配的RU不能进行传输时，在空闲的基本信道带宽传输第一前导，但是必须是在主信道为空闲的 前提下。The AP indicates in the triggered frame that the station allows the first preamble to be transmitted in the idle basic channel bandwidth when the allocated RU is unable to transmit, but must be idle on the primary channel. Under the premise.
STA2在分配的RU上进行载波检测，载波检测结果为忙或者传输功率不能满足AP的要求，STA2在AP分配给自己的的RU上不能进行传输。STA2通过触发帧的指示知道在空闲的基本信道带宽传输第一前导，但是必须是在主信道为空闲的前提下。STA2 performs carrier detection on the allocated RU. The carrier detection result is busy or the transmission power cannot meet the requirements of the AP. STA2 cannot transmit on the RU allocated by the AP to itself. STA2 knows that the first preamble is transmitted in the idle basic channel bandwidth by the indication of the trigger frame, but must be on the premise that the primary channel is idle.
STA2的MAC实体向PHY实体传递的原语中，需指示可以传输的基本信道带宽的列表或者成为比特图。比如STA2在主信道的载波检测结果为空闲，在AP分给STA2的RU对应的辅信道为忙，在辅40MHz的检测结果为第一个基本信道单位为空闲，第二个信道单位为忙，则STA2的MAC实体向PHY实体传递的原语中，指示的基本信道带宽比特图为1010。STA2的PHY实体在主信道和辅40MHz的低信道编号基本信道带宽传输第一前导。在AP分配的RU对应的基本信道单位为忙的前提下，如果STA2在主信道的载波检测结果为忙时，则STA2在所有信道上都不能传输第一前导。The primitive passed by the MAC entity of STA2 to the PHY entity needs to indicate a list of basic channel bandwidths that can be transmitted or become a bitmap. For example, the carrier detection result of STA2 on the primary channel is idle, and the secondary channel corresponding to the RU allocated to STA2 in the AP is busy. The detection result in the secondary 40 MHz is that the first basic channel unit is idle, and the second channel unit is busy. Then, in the primitive delivered by the MAC entity of STA2 to the PHY entity, the indicated basic channel bandwidth bitmap is 1010. The PHY entity of STA2 transmits the first preamble on the primary channel and the secondary channel frequency of the secondary channel of 40 MHz. On the premise that the basic channel unit corresponding to the RU allocated by the AP is busy, if the carrier detection result of the STA2 on the primary channel is busy, STA2 cannot transmit the first preamble on all channels.
STA1在主信道发送之前，也需要进行载波检测。如果载波检测的结果为空闲，那么STA1在主信道发送第一前导，然后，在所对应的RU上发送第二前导和数据部分。其中第二前导包括高效短训练域(HE-STF)和高效长序列域(HE-LTF)。STA1 also needs to perform carrier detection before the primary channel is transmitted. If the result of the carrier detection is idle, STA1 transmits a first preamble on the primary channel and then transmits a second preamble and data portion on the corresponding RU. The second preamble includes an efficient short training field (HE-STF) and a high efficiency long sequence domain (HE-LTF).
STA1在主信道发送之前，也需要进行载波检测。如果载波检测的结果为忙，那么STA1在主信道不进行发送，这个时候STA1也不能在其他基本信道带宽传输第一前导。STA1 also needs to perform carrier detection before the primary channel is transmitted. If the result of the carrier detection is busy, then STA1 does not transmit on the primary channel, and at this time, STA1 cannot transmit the first preamble in other basic channel bandwidths.
图14为本发明实施例的80MHz情况下，在调度的RU上不能传输时，在在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导的示意图。在图14中，STA3可能判断在某个基本信道带宽可以传输第一前导，比如在辅信道，但是由于主信道判断不能传输第一前导，因此STA3在所有基本信道带宽都不能传输第一前导。 FIG. 14 is a schematic diagram of transmitting a first preamble in an idle basic channel bandwidth when the primary channel is idle when the primary channel is idle in the 80 MHz case according to the embodiment of the present invention. In FIG. 14, STA3 may judge that the first preamble may be transmitted in a certain basic channel bandwidth, such as in the secondary channel, but since the primary channel judges that the first preamble cannot be transmitted, STA3 cannot transmit the first preamble in all basic channel bandwidths.
图15为本发明实施例的80MHz情况下，在调度的RU上不能传输时，在在包括主信道的连续预设基本信道带宽内传输第一前导的示意图。在图15中，STA2判断可以传输的第一前导的基本信道带宽为主信道和辅40MHz，但是由于所传输的信道必须是和主信道(主20MHz)连续的20MHz，40MHz，80MHz或160MHz中的一种，因此，STA2只能在主信道传输第一前导。STA3判断在调度的RU上不能传输，但是，STA3判断主20MHz、辅20MHz和在辅40MHz的高信道编号基本信道带宽可以传输第一前导，但是由于必须是和主信道(主20MHz)连续的20MHz，40MHz，80MHz或160MHz中的一种，因此，STA3只能在主20MHz和辅20MHz传输第一前导。FIG. 15 is a schematic diagram of transmitting a first preamble in a continuous preset basic channel bandwidth including a primary channel when the scheduled RU cannot be transmitted in the 80 MHz case according to the embodiment of the present invention. In FIG. 15, STA2 judges that the basic channel bandwidth of the first preamble that can be transmitted is the main channel and the auxiliary 40 MHz, but since the transmitted channel must be continuous with the main channel (main 20 MHz), 20 MHz, 40 MHz, 80 MHz or 160 MHz One, therefore, STA2 can only transmit the first preamble on the primary channel. STA3 judges that the scheduled RU cannot be transmitted, but STA3 judges that the primary 20 MHz, the secondary 20 MHz, and the high channel number basic channel bandwidth at the secondary 40 MHz can transmit the first preamble, but since it must be 20 MHz continuous with the main channel (main 20 MHz) One of 40MHz, 80MHz or 160MHz, therefore, STA3 can only transmit the first preamble at the primary 20MHz and the secondary 20MHz.
AP和STA1、STA2、STA3在关联的过程中还可以进行能力协商，STA1、STA2、STA3通知AP是否支持在分配的RU不能发送时，在主信道发送第一前导，或者通知AP是否支持在分配的RU不能发送时，在主信道传输第一前导，或在空闲的基本信道带宽传输第一前导，或在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导，或在包括主信道的连续预设基本信道带宽内传输第一前导。The AP and STA1, STA2, and STA3 can also perform capability negotiation in the process of association. STA1, STA2, and STA3 inform the AP whether the AP supports sending the first preamble on the primary channel or notifying whether the AP supports the allocation when the allocated RU cannot be sent. When the RU cannot transmit, transmitting the first preamble on the primary channel, or transmitting the first preamble in the idle basic channel bandwidth, or transmitting the first preamble in the idle basic channel bandwidth if the primary channel is idle, or including the primary The first preamble is transmitted within a continuous preset basic channel bandwidth of the channel.
此外，本发明专利列举了使用1比特表示的三种情况，但是，其他使用1比特指示在AP分配的RU无法传输时，也应该属于本专利范围。In addition, the present invention cites three cases using one bit representation, but other use of 1 bit indicates that the RU allocated by the AP cannot be transmitted, and should also fall within the scope of this patent.
应用场景三Application scenario three
AP1和STA1，STA2和STA3组成一个BSS，AP2和STA4组成一个BSS，两个BSS工作在相同的频段，工作带宽为40MHz，主信道是对齐的，如图3所示。两个BSS内可能还有其他站点，这里不再列举。AP1发送触发帧，调度随机接入资源，其中，辅信道分为4个随机接入RU。AP在发送的触发帧中指示站点进行物理载波检测和虚拟载波检测(以下统称为载波检测)。 AP1 and STA1, STA2 and STA3 form a BSS, AP2 and STA4 form a BSS, two BSSs work in the same frequency band, the working bandwidth is 40MHz, and the main channel is aligned, as shown in Figure 3. There may be other sites in the two BSSs, which are not listed here. The AP1 sends a trigger frame to schedule random access resources, where the secondary channel is divided into four random access RUs. The AP instructs the station to perform physical carrier detection and virtual carrier detection (hereinafter collectively referred to as carrier detection) in the transmitted trigger frame.
AP1进一步可以在触发帧中指示站点在调度的资源不能进行传输时站点的传输方式，传输方式可以是以下形式之一：在主信道传输第一前导；在空闲的基本信道带宽传输第一前导；在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导；在包括主信道的连续预设基本信道带宽内传输第一前导。The AP1 may further indicate, in the trigger frame, a manner of transmission of the station when the scheduled resource cannot be transmitted, and the transmission manner may be one of the following forms: transmitting the first preamble on the primary channel; transmitting the first preamble in the idle basic channel bandwidth; In the case where the primary channel is idle, the first preamble is transmitted in the idle basic channel bandwidth; the first preamble is transmitted in the continuous preset basic channel bandwidth including the primary channel.
指示的方式可以是1比特指示也可以是多比特指示。1比特指示出上述可以传输方式的一种，表示的含义为：1比特的一个状态(比如这个比特置为1)，则表示允许使用上述传输方式之一传输第一前导，1比特的另一个状态(比如这个比特置为0)，表示不允许传输第一前导。多比特指示时，使用各个比特的每种组合状态指示一种传输方式。The manner of indication may be a 1-bit indication or a multi-bit indication. 1 bit indicates one of the above-mentioned transmittable modes, and the meaning of the representation is: a state of 1 bit (such as this bit is set to 1), indicating that the first preamble is allowed to be transmitted using one of the above transmission modes, and the other of the 1 bit is transmitted. The state (such as this bit is set to 0) means that the first preamble is not allowed to be transmitted. In the case of multi-bit indication, each combination state using each bit indicates a transmission mode.
STA1和STA2，STA3选择基于触发帧的随机接入。STA1、ST2、STA3分别随机一个数，进行基于触发帧的随机接入过程的退避过程。STA1 and STA2, STA3 selects random access based on the trigger frame. STA1, ST2, and STA3 are randomly numbered each, and the backoff process of the random access procedure based on the trigger frame is performed.
STA1根据随机接入RU的数目，其随机的数可以减到0。STA1进行载波检测，检测结果为允许发送。STA1在随机选择的RU中进行发送。STA1 can reduce the random number to 0 according to the number of random access RUs. STA1 performs carrier detection, and the detection result is permission to transmit. STA1 transmits in a randomly selected RU.
STA2根据随机接入RU的数目，其随机的数未减到0，STA1根据AP指示允许的传输方式，判断在其他基本信道带宽的传输方式：According to the number of randomly accessed RUs, STA2 does not reduce the random number to 0. STA1 determines the transmission mode of other basic channel bandwidths according to the transmission mode allowed by the AP.
如果指示在主信道传输第一前导时，STA2在主信道传输第一前导，STA2在主信道传输第一前导时，进行载波检测，如果主信道载波检测结果为空闲，则在主信道传输第一前导；如果主信道载波检测结果为忙，则不在主信道传输第一前导。If it is indicated that the first preamble is transmitted on the primary channel, STA2 transmits the first preamble on the primary channel, and STA2 performs carrier detection when the primary channel transmits the first preamble, and if the primary channel carrier detection result is idle, transmits the first on the primary channel. Preamble; if the primary channel carrier detection result is busy, the first preamble is not transmitted on the primary channel.
在空闲的基本信道带宽传输第一前导时，STA2对所有基本信道带宽进行载波检测，在所有判断为空闲的基本信道带宽，传输第一前导。When the idle primary channel bandwidth transmits the first preamble, STA2 performs carrier detection on all basic channel bandwidths, and transmits the first preamble at all basic channel bandwidths determined to be idle.
在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导时，STA2对所有基本信道带宽进行载波检测，在主信道为空闲的前提下，在所有空闲的基本信道带宽传输第一前导。如果主信道不是空闲，则所有基本信道 带宽上不能传输第一前导。In the case that the primary channel is idle, when the idle primary channel bandwidth transmits the first preamble, STA2 performs carrier detection on all basic channel bandwidths, and transmits the first preamble in all idle basic channel bandwidths on the premise that the primary channel is idle. . If the primary channel is not idle, then all basic channels The first preamble cannot be transmitted over the bandwidth.
STA3根据随机接入RU的数目，其随机的数减到0，但是载波检测结果为忙，或者传输功率不满足AP要求，则STA3不能在随机接入RU上进行传输。STA3可以据AP指示允许的传输方式，判断在其他基本信道带宽的传输方式。STA3 reduces the random number to 0 according to the number of random access RUs, but the carrier detection result is busy, or the transmission power does not meet the AP requirement, and STA3 cannot transmit on the random access RU. STA3 can determine the transmission mode of other basic channel bandwidths according to the transmission mode indicated by the AP.
应用场景四Application scenario four
AP1和STA1，STA2和STA3组成一个BSS，AP2和STA4组成一个BSS，如图2所示。两个BSS工作在相同的频段，工作带宽为80MHz，主信道是对齐的，主信道为信道编号最小的基本信道单位。两个BSS内可能还有其他站点，这里不再列举。AP1竞争到信道发送触发帧，调度STA1,STA2和STA3发送。其中，STA1对应的RU在主信道，STA2对应的RU在辅信道上，STA3对应的RU在辅40MHz其中一个20MHz信道上，如图3所示。AP1 and STA1, STA2 and STA3 form a BSS, and AP2 and STA4 form a BSS, as shown in Figure 2. The two BSSs operate in the same frequency band, the working bandwidth is 80 MHz, the primary channel is aligned, and the primary channel is the basic channel unit with the smallest channel number. There may be other sites in the two BSSs, which are not listed here. AP1 contends to the channel to send a trigger frame, and schedules STA1, STA2, and STA3 to transmit. The RU corresponding to STA1 is on the primary channel, the RU corresponding to STA2 is on the secondary channel, and the RU corresponding to STA3 is on one of the 20 MHz channels of the secondary 40 MHz, as shown in FIG.
AP在发送的触发帧中通过几比特指示站点在分配的RU不满足预设条件时的传输形式。这里使用3比特指示传输方式，如表1所示。The AP indicates, by means of several bits, the transmission form of the station when the allocated RU does not satisfy the preset condition in the transmitted trigger frame. Here, a 3-bit indication transmission mode is used, as shown in Table 1.
Figure PCTCN2017082771-appb-000001
Figure PCTCN2017082771-appb-000001
这里使用3比特列举了五种情况，也可以使用其他比特数目，列举不同可能，或者列举不同的情形，这里就不再列举。Here, five cases are listed using three bits, and other bit numbers can be used, enumerating different possibilities, or enumerating different situations, which are not enumerated here.
在指示传输方式为000,001,010,011四种情况，和之前的实施例中描述的操作类似，这里就不再列举。In the case where the transmission mode is indicated as 000, 001, 010, 011, similar to the operation described in the previous embodiment, it will not be enumerated here.
在指示的传输方式为100时，When the indicated transmission mode is 100,
STA2在对应的RU判断不能传输，判断的条件满足下面的条件之一：载波检测的结果为忙；发送功率不满足发送站点的要求；在随机接入退避不为零。对主信道进行载波检测，如果主信道为空闲，辅40MHz对应的两个20MHz的载波检测为空闲。但是，由于指示的传输方式必须包含主信道，而且必须是和主信道连续的。因此，STA2无法在辅40MHz上传输第一前导，STA2只能在主信道上传输第一前导。STA2 is judged to be unable to transmit in the corresponding RU. The condition of the judgment satisfies one of the following conditions: the result of carrier detection is busy; the transmission power does not satisfy the requirement of the transmitting station; and the random access backoff is not zero. Carrier detection is performed on the primary channel. If the primary channel is idle, two 20 MHz carriers corresponding to the secondary 40 MHz are detected as idle. However, since the indicated transmission mode must contain the primary channel, it must be contiguous with the primary channel. Therefore, STA2 cannot transmit the first preamble on the secondary 40MHz, and STA2 can only transmit the first preamble on the primary channel.
应用场景五Application scenario five
AP1和STA1，STA2和STA3组成一个BSS，AP2和STA4组成一个BSS，如图2所示。两个BSS工作在相同的频段，工作带宽为80MHz，主信道是对齐的，主信道为信道编号最小的基本信道单位。两个BSS内可能还有其他站点，这里不再列举。AP1竞争到信道发送触发帧，调度STA1,STA2和STA3发送。其中，STA1对应的RU在主信道，STA2对应的RU在辅信道上，STA3对应的RU在辅40MHz其中一个20MHz信道上，如图3所示。AP1 and STA1, STA2 and STA3 form a BSS, and AP2 and STA4 form a BSS, as shown in Figure 2. The two BSSs operate in the same frequency band, the working bandwidth is 80 MHz, the primary channel is aligned, and the primary channel is the basic channel unit with the smallest channel number. There may be other sites in the two BSSs, which are not listed here. AP1 contends to the channel to send a trigger frame, and schedules STA1, STA2, and STA3 to transmit. The RU corresponding to STA1 is on the primary channel, the RU corresponding to STA2 is on the secondary channel, and the RU corresponding to STA3 is on one of the 20 MHz channels of the secondary 40 MHz, as shown in FIG.
AP也可以不在触发帧指示在调度的RU(调度的RU包括随机接入资源或者明确指定给某个用户的资源)不能传输时的传输方式，由收发双方进行约定。The AP may also not use the triggering frame to indicate the transmission mode when the scheduled RU (the scheduled RU includes a random access resource or a resource explicitly assigned to a certain user) cannot be transmitted, and the transmitting and receiving parties agree.
如果约定的传输方式为在主信道传输第一前导。那么STA2在分配的RU上判断不能进行传输时，可以在主信道进行传输第一前导，STA2在主信道传输第一前导时，进行载波检测，如果主信道载波检测结果为空闲，则在主信道传输第一前导；如果主信道载波检测结果为忙，则不在主信道 传输第一前导。STA1和STA3与STA2操作类似，这里就不在累述。If the agreed transmission mode is to transmit the first preamble on the primary channel. Then, when STA2 determines that the transmission cannot be performed on the allocated RU, the first preamble may be transmitted on the primary channel, and STA2 performs carrier detection when the primary channel transmits the first preamble, and if the primary channel carrier detection result is idle, then on the primary channel. Transmitting the first preamble; if the primary channel carrier detection result is busy, then not in the primary channel The first preamble is transmitted. STA1 and STA3 operate similarly to STA2, and are not described here.
STA1，STA2和STA3的操作也可以是表1中列举的形式中的任何一种，只是传输形式需要收发双方规定好的。这个时候不需要AP在触发帧进行指示。The operations of STA1, STA2, and STA3 may also be any of the forms listed in Table 1, except that the transmission form needs to be specified by both the transmitting and receiving parties. At this time, the AP is not required to indicate the trigger frame.
STA1，STA2和STA3判断调度的RU不能传输时，在其他基本信道带宽上按照收发双方约定的形式进行传输。When STA1, STA2, and STA3 judge that the scheduled RU cannot be transmitted, it transmits in the form agreed by the transmitting and receiving parties on other basic channel bandwidths.
应用场景六Application scenario six
AP1和STA1，STA2和STA3组成一个BSS，AP2和STA4组成一个BSS，两个BSS工作在相同的频段，工作带宽为40MHz，主信道是对齐的，如图3所示。两个BSS内可能还有其他站点，这里不再列举。AP1发送触发帧，调度随机接入资源，其中，辅信道分为4个随机接入RU。AP在发送的触发帧中指示站点进行物理载波检测和虚拟载波检测(以下统称为载波检测)。AP1 and STA1, STA2 and STA3 form a BSS, AP2 and STA4 form a BSS, two BSSs work in the same frequency band, the working bandwidth is 40MHz, and the main channel is aligned, as shown in Figure 3. There may be other sites in the two BSSs, which are not listed here. The AP1 sends a trigger frame to schedule random access resources, where the secondary channel is divided into four random access RUs. The AP instructs the station to perform physical carrier detection and virtual carrier detection (hereinafter collectively referred to as carrier detection) in the transmitted trigger frame.
AP也可以不在触发帧指示在调度的RU(调度的RU包括随机接入资源或者明确指定给某个用户的资源)不能传输时的传输方式，由收发双方进行约定。The AP may also not use the triggering frame to indicate the transmission mode when the scheduled RU (the scheduled RU includes a random access resource or a resource explicitly assigned to a certain user) cannot be transmitted, and the transmitting and receiving parties agree.
如果约定的传输方式为在主信道传输第一前导。那么STA2在随机接入资源上判断不能进行传输时，可以在主信道进行传输第一前导。判断的条件至少需满足以下之一：载波检测的结果为忙；发送功率不满足发送站点的要求；在随机接入中退避不为零。If the agreed transmission mode is to transmit the first preamble on the primary channel. Then, when STA2 judges that the transmission cannot be performed on the random access resource, the first preamble can be transmitted on the primary channel. The judgment condition must satisfy at least one of the following: the result of the carrier detection is busy; the transmission power does not satisfy the requirement of the transmitting station; and the backoff is not zero in the random access.
STA2在主信道传输第一前导时，进行载波检测，如果主信道载波检测结果为空闲，则在主信道传输第一前导；如果主信道载波检测结果为忙，则不在主信道传输第一前导。When the primary channel transmits the first preamble, STA2 performs carrier detection. If the primary channel carrier detection result is idle, the first preamble is transmitted on the primary channel; if the primary channel carrier detection result is busy, the first preamble is not transmitted on the primary channel.
STA1和STA3与STA2操作类似，这里就不在累述。STA1 and STA3 operate similarly to STA2, and are not described here.
STA1，STA2和STA3的操作也可以是表1中列举的形式中的任何一种， 只是传输形式需要收发双方规定好的。这个时候不需要AP在触发帧进行指示。The operations of STA1, STA2, and STA3 may also be any of the forms listed in Table 1, Only the transmission form needs to be stipulated by both parties. At this time, the AP is not required to indicate the trigger frame.
STA1，STA2和STA3在随机接入资源上判断不能进行传输时，在其他基本信道带宽上按照收发双方约定的形式进行传输。When STA1, STA2, and STA3 judge that they cannot transmit on the random access resource, they transmit in the form agreed by the transmitting and receiving parties on other basic channel bandwidths.
以下表2为本发明实施例上述方案中相关术语的解释说明：Table 2 below is an explanation of related terms in the above solution according to an embodiment of the present invention:
缩写abbreviation 英文全称Full name in English 中文释义Chinese interpretation
LTFLTF Long Training fieldLong Training field 长训练域Long training field
STFSTF Short Training fieldShort Training field 短训练域Short training field
SIGSIG SIGNAL fieldSIGNAL field 信令域Signaling domain
HEHE High efficiencyHigh efficiency 高效Efficient
SIG-ASIG-A SIGNAL A fieldSIGNAL A field 信令域Signaling domain
表2Table 2
本领域内的技术人员应明白，本发明的实施例可提供为方法、系统、或计算机程序产品。因此，本发明可采用硬件实施例、软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个 流程或多个流程和/或方框图一个方框或多个方框中指定的功能。The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The device is implemented in a flow chart A function specified in a block or blocks of a process or multiple processes and/or block diagrams.
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
相应地，本发明实施例还提供一种计算机存储介质，其中存储有计算机程序，该计算机程序配置为执行本发明实施例的传输方法。Correspondingly, an embodiment of the present invention further provides a computer storage medium, wherein a computer program is stored, the computer program configured to perform the transmission method of the embodiment of the present invention.
以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.
工业实用性Industrial applicability
本发明实施例的技术方案，第一站点在发送的无线帧中指示第二站点在调度的资源上不满足预设条件时的传输形式；其中，所述传输形式至少包括以下之一：在主信道传输第一前导；在空闲的基本信道带宽传输第一前导；在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导；在包括主信道的连续预设基本信道带宽内传输第一前导。通过对本发明实施例的实施，既不会干扰本BSS的接收，又可以设置OBSS的NAV，保护本BSS的下一帧传输，减少网络碰撞，提高网络性能。 In the technical solution of the embodiment of the present invention, the first station indicates, in the transmitted radio frame, a transmission form when the second station does not meet the preset condition on the scheduled resource, where the transmission form includes at least one of the following: Channel transmitting a first preamble; transmitting a first preamble in an idle basic channel bandwidth; transmitting a first preamble in an idle basic channel bandwidth if the primary channel is idle; and transmitting in a continuously preset basic channel bandwidth including the primary channel A lead. By implementing the embodiment of the present invention, the receiving of the BSS is not interfered with, and the NAV of the OBSS can be set to protect the next frame transmission of the BSS, thereby reducing network collision and improving network performance.

Claims (37)

  1. 一种传输方法，所述方法包括：A transmission method, the method comprising:
    第一站点在发送的无线帧中指示第二站点在调度的资源上不满足预设条件时的传输形式；其中，所述传输形式至少包括以下之一：The first station indicates, in the transmitted radio frame, a transmission form when the second station does not meet the preset condition on the scheduled resource; wherein the transmission form includes at least one of the following:
    在主信道传输第一前导；Transmitting a first preamble on the primary channel;
    在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth;
    在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth if the primary channel is idle;
    在包括主信道的连续预设基本信道带宽内传输第一前导。The first preamble is transmitted within a continuous preset basic channel bandwidth including the primary channel.
  2. 根据权利要求1所述的传输方法，其中，所述调度的资源是基于触发帧的上行随机接入资源或基于触发帧的确定资源。The transmission method according to claim 1, wherein the scheduled resource is an uplink random access resource based on a trigger frame or a determined resource based on a trigger frame.
  3. 根据权利要求1所述的传输方法，其中，在调度的资源上不满足预设条件是指：在调度的资源上不满足以下条件的至少之一：The transmission method according to claim 1, wherein the failure to satisfy the preset condition on the scheduled resource means that at least one of the following conditions is not satisfied on the scheduled resource:
    载波检测的结果为空闲；The result of carrier detection is idle;
    发送功率满足第一站点的要求；The transmission power meets the requirements of the first site;
    在随机接入退避为零；The random access backoff is zero;
    其中，在调度的资源上不满足所述预设条件时，在调度的资源上不能进行传输。When the preset condition is not met on the scheduled resource, the transmission cannot be performed on the scheduled resource.
  4. 根据权利要求1所述的传输方法，其中，所述方法还包括：The transmission method according to claim 1, wherein the method further comprises:
    所述第一站点在所述无线帧中通过1比特或者多比特指示是否采用所述传输形式或者所采用的具体传输形式。The first station indicates whether to adopt the transmission form or a specific transmission form by using 1 bit or multiple bits in the radio frame.
  5. 根据权利要求4所述的传输方法，其中，所述第一站点在所述无线帧中通过1比特指示是否采用所述传输形式或者所采用的具体传输形式，包括：The transmission method according to claim 4, wherein the first station indicates whether to adopt the transmission form or the specific transmission form by using 1 bit in the radio frame, including:
    当所述1比特为第一值时，通过所述1比特指示不允许传输所述第一前导； When the 1 bit is the first value, the first preamble is not allowed to be transmitted by the 1 bit indication;
    当所述1比特为第二值时，通过所述1比特指示允许传输所述第一前导；其中，所述允许传输所述第一前导的传输方式为以下之一：在主信道传输第一前导、在空闲的基本信道带宽传输第一前导、在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导、在包括主信道的连续预设基本信道带宽内传输第一前导。When the 1 bit is the second value, the first preamble is allowed to be transmitted by the 1 bit; wherein the transmission mode for allowing the transmission of the first preamble is one of: transmitting the first channel on the primary channel The preamble transmits the first preamble in the idle basic channel bandwidth, transmits the first preamble in the idle basic channel bandwidth, and transmits the first preamble in the continuous preset basic channel bandwidth including the main channel in the case that the primary channel is idle.
  6. 根据权利要求4所述的传输方法，其中，所述第一站点在所述无线帧中通过多比特指示是否采用所述传输形式或者所采用的具体传输形式，包括：The transmission method according to claim 4, wherein the first station indicates whether to adopt the transmission form or a specific transmission form by using multiple bits in the radio frame, including:
    通过所述多比特中各个比特位的各种排列组合，来指示是否采用所述传输形式或者所采用的各种具体传输形式。Whether to adopt the transmission form or various specific transmission forms employed is adopted by various permutation combinations of the individual bits in the multi-bit.
  7. 根据权利要求1所述的传输方法，其中，所述第一站点发送的无线帧携带所述第一前导需要填写的信息。The transmission method according to claim 1, wherein the radio frame sent by the first station carries information that the first preamble needs to fill out.
  8. 一种传输方法，所述方法包括：A transmission method, the method comprising:
    第二站点在调度的资源上不满足预设条件时，按照第一站点的指示或者与第一站点之间的约定，确定传输形式；其中，所述传输形式至少包括以下之一：When the second site does not meet the preset condition on the scheduled resource, the transmission form is determined according to the indication of the first site or the agreement with the first site; wherein the transmission form includes at least one of the following:
    在主信道传输第一前导；Transmitting a first preamble on the primary channel;
    在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth;
    在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth if the primary channel is idle;
    在包括主信道的连续预设基本信道带宽内传输第一前导。The first preamble is transmitted within a continuous preset basic channel bandwidth including the primary channel.
  9. 根据权利要求8所述的传输方法，其中，在调度的资源上不满足预设条件是指：在调度的资源上不满足以下条件的至少之一：The transmission method according to claim 8, wherein the failure to satisfy the preset condition on the scheduled resource means that at least one of the following conditions is not satisfied on the scheduled resource:
    载波检测的结果为空闲；The result of carrier detection is idle;
    发送功率满足第一站点的要求；The transmission power meets the requirements of the first site;
    在随机接入退避为零；The random access backoff is zero;
    其中，在调度的资源上不满足所述预设条件时，在调度的资源上不能进行传输。 When the preset condition is not met on the scheduled resource, the transmission cannot be performed on the scheduled resource.
  10. 根据权利要求8所述的传输方法，其中，所述包含主信道的连续预设基本信道带宽所占用的带宽为以下之一：主20MHz，主40MHz，主80MHz，160MHz。The transmission method according to claim 8, wherein the bandwidth occupied by the continuous preset basic channel bandwidth including the primary channel is one of the following: main 20 MHz, main 40 MHz, main 80 MHz, 160 MHz.
  11. 根据权利要求8所述的传输方法，其中，所述第一前导包括：传统短训练域、传统长训练域、传统信令域、重复的传统信令域、高效信令域。The transmission method according to claim 8, wherein the first preamble comprises: a traditional short training domain, a traditional long training domain, a traditional signaling domain, a repeated conventional signaling domain, and an efficient signaling domain.
  12. 根据权利要求8所述的传输方法，其中，第二站点按照与第一站点之间的约定，确定传输形式，包括：The transmission method according to claim 8, wherein the second station determines the transmission form according to an agreement with the first station, including:
    第二站点根据预定的传输策略，确定传输形式；其中，所述预定传输策略中的传输形式至少包括以下之一：在主信道传输第一前导、在空闲的基本信道带宽传输第一前导、在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导、在包括主信道的连续预设基本信道带宽内传输第一前导。The second station determines a transmission form according to a predetermined transmission policy, where the transmission form in the predetermined transmission policy includes at least one of: transmitting a first preamble on the primary channel, transmitting a first preamble on the idle basic channel bandwidth, When the primary channel is idle, the first preamble is transmitted in the idle basic channel bandwidth, and the first preamble is transmitted in the continuous preset basic channel bandwidth including the primary channel.
  13. 根据权利要求8所述的传输方法，其中，所述调度的资源是基于触发帧的上行随机接入资源或基于触发帧的确定资源。The transmission method according to claim 8, wherein the scheduled resource is an uplink random access resource based on a trigger frame or a determined resource based on a trigger frame.
  14. 根据权利要求13所述的传输方法，其中，所述基于触发帧的确定资源是：指示分配给特定站点的资源。The transmission method according to claim 13, wherein the trigger frame-based determination resource is: indicating a resource allocated to a specific site.
  15. 根据权利要求8所述的传输方法，其中，当所述传输形式为在主信道传输第一前导时，所述方法还包括：The transmission method according to claim 8, wherein when the transmission form is to transmit the first preamble on the primary channel, the method further comprises:
    在主信道传输第一前导之前，所述第二站点在所述主信道上进行载波检测；Before the primary channel transmits the first preamble, the second station performs carrier detection on the primary channel;
    当载波检测结果为空闲时，所述第二站点在所述主信道上传输第一前导；When the carrier detection result is idle, the second station transmits the first preamble on the primary channel;
    当载波检测结果为忙时，所述第二站点不能在所述主信道上传输第一前导。When the carrier detection result is busy, the second station cannot transmit the first preamble on the primary channel.
  16. 根据权利要求8所述的传输方法，其中，所述在包括主信道的连续预设基本信道带宽内传输第一前导，包括：The transmission method according to claim 8, wherein the transmitting the first preamble within a continuous preset basic channel bandwidth including the primary channel comprises:
    在所述包括主信道的连续预设基本信道带宽内传输第一前导之前，所 述第二站点在所述包括主信道的连续预设基本信道带宽上进行载波检测；Before transmitting the first preamble within the continuous preset basic channel bandwidth including the primary channel, The second station performs carrier detection on the continuous preset basic channel bandwidth including the primary channel;
    当所有基本信道带宽的载波检测结果为空闲时，所述第二站点在所述包括主信道的连续预设基本信道带宽上传输第一前导；When the carrier detection result of all the basic channel bandwidths is idle, the second station transmits the first preamble on the continuous preset basic channel bandwidth including the primary channel;
    当部分基本信道带宽的载波检测结果为忙时，所述第二站点在所述包括主信道的连续预设基本信道带宽上不传输第一前导。When the carrier detection result of the partial basic channel bandwidth is busy, the second station does not transmit the first preamble on the continuous preset basic channel bandwidth including the primary channel.
  17. 根据权利要求8所述的传输方法，其中，当所述传输形式为在空闲的基本信道带宽传输第一前导，或者在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导时，所述方法还包括：The transmission method according to claim 8, wherein when the transmission form is to transmit the first preamble in the idle basic channel bandwidth, or in the case where the primary channel is idle, when the first basic preamble is transmitted in the idle basic channel bandwidth, The method further includes:
    所述第二站点在介质访问控制MAC实体向物理PHY实体传递的参数中指示基本信道带宽状态列表。The second station indicates a basic channel bandwidth state list in a parameter passed by the medium access control MAC entity to the physical PHY entity.
  18. 根据权利要求17所述的传输方法，其中，所述基本信道带宽状态列表中，每一个基本信道带宽使用1比特来表示对应的基本信道带宽是否允许传输。The transmission method according to claim 17, wherein in the basic channel bandwidth state list, each basic channel bandwidth uses 1 bit to indicate whether the corresponding basic channel bandwidth allows transmission.
  19. 根据权利要求8所述的传输方法，其中，当所述传输形式为在主信道传输第一前导，或者在包括主信道的连续预设基本信道带宽内传输第一前导时，所述第二站点在介质访问控制MAC实体向物理PHY实体传递的参数中指示第一前导所占用的带宽大小信息。The transmission method according to claim 8, wherein said second station is when said transmission form is to transmit a first preamble on a primary channel or to transmit a first preamble within a continuous preset basic channel bandwidth including a primary channel The bandwidth size information occupied by the first preamble is indicated in a parameter passed by the medium access control MAC entity to the physical PHY entity.
  20. 根据权利要求17所述的传输方法，其中，所述PHY实体根据所述MAC实体的指示产生第一前导，并且将所述第一前导在所述基本信道带宽状态列表中指示为允许传输的基本信道带宽上传输。The transmission method according to claim 17, wherein said PHY entity generates a first preamble according to an indication of said MAC entity, and indicates said first preamble in said basic channel bandwidth state list as a basic for allowing transmission Transmission on the channel bandwidth.
  21. 根据权利要求8至20任一项所述的传输方法，其中，所述方法还包括：The transmission method according to any one of claims 8 to 20, wherein the method further comprises:
    所述第二站点和所述第一站点在关联时，协商当所述第二站点在调度的资源上不满足预设条件时的传输方式。When the second site and the first site are associated, the transmission mode when the second site does not meet the preset condition on the scheduled resource is negotiated.
  22. 一种传输装置，所述装置包括：A transmission device, the device comprising:
    指示单元，配置为在发送的无线帧中指示第二站点在调度的资源上不满足预设条件时的传输形式；其中，所述传输形式至少包括以下之一：And an indication unit, configured to indicate, in the sent radio frame, a transmission form when the second station does not meet the preset condition on the scheduled resource; wherein the transmission form includes at least one of the following:
    在主信道传输第一前导； Transmitting a first preamble on the primary channel;
    在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth;
    在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth if the primary channel is idle;
    在包括主信道的连续预设基本信道带宽内传输第一前导。The first preamble is transmitted within a continuous preset basic channel bandwidth including the primary channel.
  23. 根据权利要求22所述的传输装置，其中，在调度的资源上不满足预设条件是指：在调度的资源上不满足以下条件的至少之一：The transmission device according to claim 22, wherein the failure to satisfy the preset condition on the scheduled resource means that at least one of the following conditions is not satisfied on the scheduled resource:
    载波检测的结果为空闲；The result of carrier detection is idle;
    发送功率满足第一站点的要求；The transmission power meets the requirements of the first site;
    在随机接入退避为零；The random access backoff is zero;
    其中，在调度的资源上不满足所述预设条件时，在调度的资源上不能进行传输。When the preset condition is not met on the scheduled resource, the transmission cannot be performed on the scheduled resource.
  24. 根据权利要求22所述的传输装置，其中，所述第一站点在所述无线帧中通过1比特或者多比特指示是否采用所述传输形式或者所采用的具体传输形式。The transmission apparatus according to claim 22, wherein said first station indicates whether to adopt said transmission form or a specific transmission form adopted by said one or more bits in said radio frame.
  25. 根据权利要求24所述的传输装置，其中，当所述1比特为第一值时，通过所述1比特指示不允许传输所述第一前导；The transmission device according to claim 24, wherein when the 1 bit is the first value, the first preamble is not allowed to be transmitted by the 1-bit indication;
    当所述1比特为第二值时，通过所述1比特指示允许传输所述第一前导；其中，所述允许传输所述第一前导的传输方式为以下之一：在主信道传输第一前导、在空闲的基本信道带宽传输第一前导、在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导、在包括主信道的连续预设基本信道带宽内传输第一前导。When the 1 bit is the second value, the first preamble is allowed to be transmitted by the 1 bit; wherein the transmission mode for allowing the transmission of the first preamble is one of: transmitting the first channel on the primary channel The preamble transmits the first preamble in the idle basic channel bandwidth, transmits the first preamble in the idle basic channel bandwidth, and transmits the first preamble in the continuous preset basic channel bandwidth including the main channel in the case that the primary channel is idle.
  26. 根据权利要求24所述的传输装置，其中，通过所述多比特中各个比特位的各种排列组合，来指示是否采用所述传输形式或者所采用的各种具体传输形式。The transmission device according to claim 24, wherein the transmission form or the various specific transmission forms employed are indicated by various permutation combinations of the respective bits of the plurality of bits.
  27. 根据权利要求22所述的传输装置，其中，所述第一前导包括：传统短训练域、传统长训练域、传统信令域、重复的传统信令域、高效信令域。The transmission apparatus according to claim 22, wherein said first preamble comprises: a conventional short training domain, a conventional long training domain, a legacy signaling domain, a repeated conventional signaling domain, and an efficient signaling domain.
  28. 一种传输装置，所述装置包括： A transmission device, the device comprising:
    传输形式确定单元，配置为第二站点在调度的资源上不满足预设条件时，按照第一站点的指示或者与第一站点之间的约定，确定传输形式；其中，所述传输形式至少包括以下之一：a transmission form determining unit, configured to: when the second site does not meet the preset condition on the scheduled resource, determine the transmission form according to the indication of the first site or the agreement with the first site; wherein the transmission form includes at least One of the following:
    在主信道传输第一前导；Transmitting a first preamble on the primary channel;
    在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth;
    在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导；Transmitting the first preamble in the idle basic channel bandwidth if the primary channel is idle;
    在包括主信道的连续预设基本信道带宽内传输第一前导。The first preamble is transmitted within a continuous preset basic channel bandwidth including the primary channel.
  29. 根据权利要求28所述的传输装置，其中，在调度的资源上不满足预设条件是指：在调度的资源上不满足以下条件的至少之一：The transmission device according to claim 28, wherein the failure to satisfy the preset condition on the scheduled resource means that at least one of the following conditions is not satisfied on the scheduled resource:
    载波检测的结果为空闲；The result of carrier detection is idle;
    发送功率满足第一站点的要求；The transmission power meets the requirements of the first site;
    在随机接入退避为零；The random access backoff is zero;
    其中，在调度的资源上不满足所述预设条件时，在调度的资源上不能进行传输。When the preset condition is not met on the scheduled resource, the transmission cannot be performed on the scheduled resource.
  30. 根据权利要求28所述的传输装置，其中，所述第一前导包括：传统短训练域、传统长训练域、传统信令域、重复的传统信令域、高效信令域。The transmission apparatus according to claim 28, wherein said first preamble comprises: a conventional short training domain, a legacy long training domain, a legacy signaling domain, a repeated conventional signaling domain, and an efficient signaling domain.
  31. 根据权利要求28所述的传输装置，其中，当所述传输形式为在主信道传输第一前导时，所述装置还包括：The transmission device according to claim 28, wherein when the transmission form is to transmit the first preamble on the primary channel, the device further comprises:
    检测单元，配置为在主信道传输第一前导之前，所述第二站点在所述主信道上进行载波检测；a detecting unit, configured to perform carrier detection on the primary channel before the primary channel transmits the first preamble;
    当载波检测结果为空闲时，所述第二站点在所述主信道上传输第一前导；When the carrier detection result is idle, the second station transmits the first preamble on the primary channel;
    当载波检测结果为忙时，所述第二站点不能在所述主信道上传输第一前导。When the carrier detection result is busy, the second station cannot transmit the first preamble on the primary channel.
  32. 根据权利要求28所述的传输装置，其中，所述装置还包括：The transmission device of claim 28, wherein the device further comprises:
    检测单元，配置为在所述包括主信道的连续预设基本信道带宽内传输 第一前导之前，在所述包括主信道的连续预设基本信道带宽上进行载波检测；a detecting unit configured to transmit within the continuous preset basic channel bandwidth including the primary channel Before the first preamble, performing carrier detection on the continuous preset basic channel bandwidth including the primary channel;
    当所有基本信道带宽的载波检测结果为空闲时，在所述包括主信道的连续预设基本信道带宽上传输第一前导；当部分基本信道带宽的载波检测结果为忙时，在所述包括主信道的连续预设基本信道带宽上不传输第一前导。Transmitting a first preamble on the continuous preset basic channel bandwidth including the primary channel when the carrier detection result of all the basic channel bandwidths is idle; and when the carrier detection result of the partial basic channel bandwidth is busy, The first preamble is not transmitted on the continuous preset basic channel bandwidth of the channel.
  33. 根据权利要求28所述的传输装置，其中，当所述传输形式为在空闲的基本信道带宽传输第一前导，或者在主信道空闲的情况下，在空闲的基本信道带宽传输第一前导时，所述装置还包括：The transmission device according to claim 28, wherein when said transmission form is to transmit a first preamble in an idle basic channel bandwidth, or in a case where the primary channel is idle, when the idle primary channel bandwidth transmits the first preamble, The device also includes:
    指示单元，配置为在MAC实体向PHY实体传递的参数中指示基本信道带宽状态列表。And an indication unit configured to indicate a basic channel bandwidth status list in a parameter that the MAC entity communicates to the PHY entity.
  34. 根据权利要求32所述的传输装置，其中，所述基本信道带宽状态列表中，每一个基本信道带宽使用1比特来表示对应的基本信道带宽是否允许传输。The transmission apparatus according to claim 32, wherein in said basic channel bandwidth state list, each basic channel bandwidth uses 1 bit to indicate whether the corresponding basic channel bandwidth is allowed to be transmitted.
  35. 根据权利要求32所述的传输装置，其中，所述PHY实体根据所述MAC实体的指示产生第一前导，并且将所述第一前导在所述基本信道带宽状态列表中指示为允许传输的基本信道带宽上传输。The transmission device according to claim 32, wherein said PHY entity generates a first preamble according to an indication of said MAC entity, and indicates said first preamble in said basic channel bandwidth state list as a basic to allow transmission Transmission on the channel bandwidth.
  36. 一种站点，所述站点包括权利要求22至27任一项所述的传输装置，或者包括权利要求28至35任一项所述的传输装置。A site comprising the transmission device of any one of claims 22 to 27, or the transmission device of any one of claims 28 to 35.
  37. 一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，该计算机可执行指令配置为执行权利要求1至7任一项所述的传输方法，或者执行权利要求8至21任一项所述的传输方法。 A computer storage medium having stored therein computer executable instructions configured to perform the transmission method of any one of claims 1 to 7, or to perform any of claims 8 to 21 The transmission method described in the item.
PCT/CN2017/082771 2016-07-01 2017-05-02 Transmission method, device and station, and computer storage medium WO2018000932A1 (en)

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