WO2019242658A1 - 一种带宽模式指示方法、信道指示方法及装置 - Google Patents

一种带宽模式指示方法、信道指示方法及装置 Download PDF

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Publication number
WO2019242658A1
WO2019242658A1 PCT/CN2019/091953 CN2019091953W WO2019242658A1 WO 2019242658 A1 WO2019242658 A1 WO 2019242658A1 CN 2019091953 W CN2019091953 W CN 2019091953W WO 2019242658 A1 WO2019242658 A1 WO 2019242658A1
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Prior art keywords
frame
bit
bits
subchannel
format
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PCT/CN2019/091953
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English (en)
French (fr)
Inventor
李云波
于健
淦明
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华为技术有限公司
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Priority to EP19822082.4A priority Critical patent/EP3799497A4/en
Publication of WO2019242658A1 publication Critical patent/WO2019242658A1/zh
Priority to US17/126,414 priority patent/US11930403B2/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/002Transmission of channel access control information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03828Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
    • H04L25/03866Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using scrambling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044Arrangements for allocating sub-channels of the transmission path allocation of payload
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signaling for the administration of the divided path
    • H04L5/0092Indication of how the channel is divided
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18Negotiating wireless communication parameters
    • H04W28/20Negotiating bandwidth
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453Resources in frequency domain, e.g. a carrier in FDMA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0808Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H04W74/0816Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10Small scale networks; Flat hierarchical networks
    • H04W84/12WLAN [Wireless Local Area Networks]

Definitions

  • the present application relates to the field of communications, and in particular, to a bandwidth mode indication method, a channel indication method, and a device.
  • the wireless channel environment between the transmitting end and the receiving end is different. Before the transmitting end and the receiving end can perform data communication, if they can negotiate the available bandwidth according to their channel availability, they will Data communication is very useful.
  • the current sending end can send the channel bandwidth mode to the receiving end before data communication.
  • the current bandwidth modes include 20 megaband mode, 40 megaband mode, 80 megaband mode, and 160 (80 + 80 ) Mega bandwidth mode, so that the receiving end can reserve the available bandwidth according to the bandwidth mode for data communication between it and the sending end.
  • this application provides a bandwidth mode indication method and device.
  • the technical solution is as follows:
  • an embodiment of the present application provides a bandwidth mode indication method.
  • the second device when the first device is an extremely high-throughput EHT site, the second device generates a first non-high-throughput non-HT format.
  • Frame or the first non-high-throughput duplicated non-HT format frame at least three of the first 7 bits of the scrambling sequence of the first non-HT format frame indicate the channel bandwidth mode, so At least three of the first seven bits of the scrambling sequence of the frame in the first non-HT duplicated format indicate a bandwidth mode of a channel, where the channel is a channel between the first device and the second device;
  • the first device sends the frame in the first non-HT format or the frame in the first non-HT format; when the first device is a very high-throughput VHT site or an efficient HE site that does not support EHT,
  • the second device generates a second non-HT format frame or a second non-HT duplicated format frame, and two of the first seven bits of the scrambling sequence of the second non-HT
  • the types of bandwidth modes indicated by the at least three bits exceed four. This can indicate a new bandwidth mode, so as to implement sending a new bandwidth mode to the first device.
  • the three bits are the second of the first 7 bits of the scrambled sequence,
  • the third bit and the fourth bit, or the three bits are a fourth bit, a sixth bit, and a seventh bit of the first 7 bits of the scrambling code sequence.
  • the three bits may indicate that there are more than four bandwidth modes, and thus may indicate a new bandwidth mode, so as to implement sending a new bandwidth mode to the first device.
  • the channel includes a 20MHz master subchannel and M 20MHz slave subchannels, M is greater than or equal to 3, and each of the at least three bits corresponds to At least one slave subchannel, and the value of the bit corresponding to the slave subchannel is used to indicate whether the slave subchannel is available.
  • the preamble punctuation mode includes multiple modes. Since each bit of the at least three bits corresponds to at least one slave subchannel, the multiple modes included in the preamble punctuation mode can be indicated to the first device.
  • the bit when a value of a bit corresponding to the slave subchannel is 1, the bit is used to indicate that the slave subchannel is available, and when the slave subchannel corresponds to When the value of the bit of 0 is 0, the bit is used to indicate that the slave subchannel is unavailable; or when the value of the bit corresponding to the slave subchannel is 0, the bit is used to indicate the slave subchannel The subchannel is available. When the value of the bit corresponding to the slave subchannel is 1, the bit is used to indicate that the slave subchannel is unavailable.
  • an embodiment of the present application provides a bandwidth mode indication method.
  • a second device generates a first non-high-throughput non-HT format frame or a first non-high-throughput non-HT copy.
  • duplicated format frame the first non-HT format frame contains first indication information
  • the first indication information is used to indicate whether to use the first 7 of the scrambling sequence of the first non-HT format frame
  • At least three bits of the bit indicate the bandwidth mode
  • the first non-HT duplicated format frame includes first indication information
  • the first indication information is used to indicate whether to use the first non-HT duplicated format
  • At least three bits of the first 7 bits of the scrambling sequence of the frame indicate the bandwidth mode
  • the second device sends the first non-HT format frame or the first device to the first device Non-HT duplicated frames.
  • the first device may determine whether to use at least three bits of the first 7 bits of the scrambling sequence to indicate the bandwidth mode according to the first indication information.
  • a bandwidth mode there are more than four types of bandwidth modes indicated by the at least three bits, so that a new bandwidth mode can be indicated, so as to implement sending a new bandwidth mode to the first device.
  • the first indication information is a globally unique / local execution bit in a sending address field of the first non-HT format frame, or is the first non-HT -Unicast / broadcast bits in the receiving address field of the HT format frame, or the ToDS field of the distributed system ToDS field and the FromDS field of the distributed system in the Frame Control field of the first non-HT format frame Or retry the Retry field.
  • the first indication information is a globally unique / local execution bit in a sending address field of the first non-HT duplicated frame, or is the first A unicast / broadcast bit in a receiving address field of a frame in a non-HT duplicated format, or a ToDS field, a FromDS field, or a Retry field in a Frame control field of the first non-HT duplicated format frame.
  • the third bit and the fourth bit, or the three bits are a fourth bit, a sixth bit, and a seventh bit of the first 7 bits of the scrambling code sequence.
  • the channel includes a 20MHz master subchannel and M 20MHz slave subchannels, M is greater than or equal to 3, and each of the at least three bits corresponds to At least one slave subchannel, and the value of the bit corresponding to the slave subchannel is used to indicate whether the slave subchannel is available.
  • the preamble punctuation mode includes multiple modes. Since each bit of the at least three bits corresponds to at least one slave subchannel, the multiple modes included in the preamble punctuation mode can be indicated to the first device.
  • the bit when a value of a bit corresponding to the slave subchannel is 1, the bit is used to indicate that the slave subchannel is available, and when the slave subchannel corresponds to When the value of the bit of 0 is 0, the bit is used to indicate that the slave subchannel is unavailable; or when the value of the bit corresponding to the slave subchannel is 0, the bit is used to indicate the slave subchannel The subchannel is available. When the value of the bit corresponding to the slave subchannel is 1, the bit is used to indicate that the slave subchannel is unavailable.
  • an embodiment of the present application provides a channel indication method.
  • a first device receives a non-high-throughput non-HT format RTS-A frame or a non-high-throughput copy sent by a second device.
  • RTS-A frame in non-HT duplicated format.
  • Each of the first 7 bits in the scrambling sequence of the RTS-A frame of the advanced request transmission frame in the non-HT format corresponds to at least three bits in the channel.
  • the CTS-A includes a bitmap.
  • the bit corresponding to the certain subchannel in the bitmap is set to 1, otherwise, The bit corresponding to the certain subchannel in the bitmap is set to 0; the first device sends the non-HT to the second device on the subchannel corresponding to the bit having a value of 1 in the bitmap.
  • non-HT duplicated CTS-A frames Through the interaction of RTS-A / CTS-A, the two parties negotiated subchannels for data communication, that is, the main 20MHz channel and the subchannel corresponding to the bit set to 1 in the bitmap of the CTS-A frame.
  • the RTS-A frame is an RTS frame that uses at least three of the first 7 bits of the scrambling sequence to carry bandwidth information.
  • the RTS-A frame is a new frame type or a new trigger frame, and a bit map is carried in the RTS-A frame. Each bit in corresponds to a 20MHz subchannel.
  • the CTS-A frame is a CTS frame.
  • the CTS-A frame is a frame carrying the A-Control field of the BQR.
  • the CTS-A frame is a frame carrying a new type of A-Control field.
  • an embodiment of the present application provides a device for indicating a bandwidth mode, which is configured to execute the method in the first aspect or any possible implementation manner of the first aspect.
  • the apparatus includes a unit for performing the first aspect or the method in any possible implementation manner of the first aspect.
  • an embodiment of the present application provides a device for indicating a bandwidth mode, for performing the method in the second aspect or any one of the possible implementation manners of the second aspect.
  • the apparatus includes a unit for performing the second aspect or the method in any one of the possible implementation manners of the second aspect.
  • an embodiment of the present application provides a channel indicating device, configured to execute the third aspect or a method in any one of the possible implementation manners of the third aspect.
  • the apparatus includes a unit for performing the third aspect or the method in any one of the possible implementation manners of the third aspect.
  • an embodiment of the present application provides a device for indicating a bandwidth mode, where the device includes an input interface, an output interface, a processor, and a memory.
  • the input / output interface, the processor, and the memory may be connected through a bus system.
  • the memory is configured to store a program, an instruction, or code
  • the processor is configured to execute the program, instruction, or code in the memory, and complete the first aspect, the second aspect, any possible implementation manner of the first aspect, or the second aspect. Method in any possible implementation of the aspect.
  • an embodiment of the present application provides a channel indicating device, where the device includes an input interface, an output interface, a processor, and a memory.
  • the input / output interface, the processor, and the memory may be connected through a bus system.
  • the memory is configured to store a program, an instruction, or a code
  • the processor is configured to execute the program, an instruction, or a code in the memory, and implement the third aspect or a method in any possible implementation manner of the third aspect.
  • an embodiment of the present application provides a computer program product.
  • the computer program product includes a computer program stored in a computer-readable storage medium, and the computing program is loaded by a processor to implement the first aspect.
  • the embodiments of the present application provide a computer-readable storage medium for storing a computer program that is loaded by a processor to execute the first aspect, the second aspect, the third aspect, and the first aspect.
  • the embodiments of the present application provide a chip, the chip including a programmable logic circuit and / or a program instruction, which is used to implement the first aspect, the second aspect, and the third aspect when the chip is running.
  • FIG. 1-1 is a schematic structural diagram of a communication system according to an embodiment of the present application.
  • FIG. 1-2 is a schematic structural diagram of another communication system according to an embodiment of the present application.
  • FIG. 2-1 is a flowchart of a bandwidth mode indication method according to an embodiment of the present application.
  • FIG. 2-2 is a schematic diagram of punching a channel according to an embodiment of the present application.
  • FIG. 3-1 is a flowchart of another bandwidth mode indication method according to an embodiment of the present application.
  • 3-3 is a schematic structural diagram of a Frame Control field provided by an embodiment of the present application.
  • FIG. 4 is a flowchart of a channel indication method according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a bandwidth mode indicating device according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of another bandwidth mode indicating device according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a channel indicating device according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of another bandwidth mode indicating device according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of another bandwidth mode indicating device according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of another channel indicating device according to an embodiment of the present application.
  • the communication system includes:
  • the bandwidth mode may include multiple modes such as 20 mega bandwidth mode, 40 mega bandwidth mode, 80 mega bandwidth mode, 160 (80 + 80) mega bandwidth mode, 240 mega bandwidth mode, and 320 mega bandwidth mode, among which 20 mega bandwidth mode
  • the bandwidth of the corresponding channel is 20 MHz
  • the bandwidth of the channel corresponding to the 40 mega bandwidth mode is 40 MHz
  • the bandwidth of the channel corresponding to the 80 mega bandwidth mode is 80 MHz
  • the bandwidth of the channel corresponding to the 160 mega bandwidth mode is 160 MHz
  • the bandwidth of the corresponding channel to 240 mega bandwidth is The bandwidth of the channel is 240 MHz
  • the bandwidth of the channel corresponding to the 320 mega bandwidth mode is 320 MHz.
  • Each channel includes at least one subchannel, and the bandwidth of each subchannel may be the same or different, and the bandwidth of each subchannel may be greater than or equal to 20 MHz.
  • the bandwidth of each subchannel may be the same or different, and the bandwidth of each subchannel may be greater than or equal to 20 MHz.
  • the system may be a communication system composed of an access point (AP) and at least one station.
  • the first device 1 may be an AP, and the second device 2 may be any site; or, the first device 1 may be any site, and the second device 2 may be an AP; or, the first device 1 and the second device 2 may be For two different sites.
  • an embodiment of the present application provides a bandwidth mode indication method.
  • the method can be applied to a communication system shown in FIG. 1-1 or FIG. 1-2, including:
  • Step 201 The second device obtains a device type of the first device.
  • the first device sends the device type of the first device to the second device
  • the second device sends the device type of the second device to the first device. Therefore, before performing this step, both the first device and the second device save the device type of the other party.
  • the second device may obtain the device type of the first device stored in the second device.
  • the device type may be an Extremely High Throughput (EHT) site, or the device type may be a Very High Throughput (VHT) site that does not support EHT or a high efficiency (High efficiency, HE) site.
  • EHT Extremely High Throughput
  • VHT Very High Throughput
  • HE high efficiency
  • the first device supports using at least three bits of the first 7 bits of the scrambling sequence to indicate the channel bandwidth mode, and can also support using the first 7 bits of the scrambling sequence Two bits in indicate the bandwidth mode.
  • the first device supports using two of the first seven bits of the scrambling sequence to indicate the bandwidth mode.
  • the device type of the second device is an EHT site.
  • the first device may agree in advance that when the first device is a device of the EHT site, the second device uses at least three bits of the first 7 bits of the scrambling sequence to indicate The bandwidth mode, and when the first device is a device of a VHT site or an HE site that does not support EHT, the second device uses two of the first 7 bits of the scrambling sequence to indicate the bandwidth mode.
  • This channel is any channel between the second device and the first device. There may be at least one channel between the second device and the first device, and each channel in the at least one channel corresponds to a bandwidth mode. In addition to the four bandwidth modes including 20 mega bandwidth mode, 40 mega bandwidth mode, 80 mega bandwidth mode, and 160 mega bandwidth mode, it can also include new bandwidth modes such as 240 mega bandwidth mode and 320 mega bandwidth mode.
  • the channel includes at least one subchannel, and one subchannel exists in the at least one subchannel, and the other subchannels are slave subchannels.
  • Step 202a When the device type of the first device is an EHT site, the second device generates a first non-High Throughput (non-HT) format frame or a first non-High Throughput (non-High Throughput) frame. Throughput duplicated, non-HT duplicated) frames.
  • non-HT non-High Throughput
  • non-High Throughput non-High Throughput
  • At least three bits in the first 7 bits of the scrambling sequence of the first non-HT format frame indicate the channel bandwidth mode, and among the first 7 bits of the scrambling sequence of the first non-HT frame in the duplicated format At least three bits of indicate the bandwidth mode of the channel, which is a channel between the first device and the second device.
  • the second device When the channel includes a sub-channel, the second device generates a frame in a first non-HT format; when the channel includes a plurality of sub-channels, the second device generates a frame in a first non-HT duplicated format.
  • the currently appearing bandwidth modes include 20 megaband mode, 40 megaband mode, 80 megaband mode and 160 (80 + 80) megaband mode, as well as 240 megaband mode and 320 megaband mode.
  • Bandwidth mode because at least three bits of the first 7 bits of the scrambling code sequence of the frame of the first non-HT format are used to indicate the channel bandwidth mode, or the scrambling of the frame of the first non-HT format is used. At least three bits of the first 7 bits of the code sequence indicate the bandwidth mode of the channel, so the types of bandwidth modes that the at least three bits can indicate exceed four.
  • the bandwidth mode that can be indicated by the at least three bits can include a bandwidth of 240 megabytes, in addition to four types of 20 megaband, 40 megaband, 80 megaband, and 160 (80 + 80) megaband modes.
  • New bandwidth modes such as mode and / or 320 mega bandwidth mode.
  • three of the first seven bits of the scrambling code sequence may be used to indicate the bandwidth mode of the channel.
  • the first 7 bits of the scrambling sequence are B0B1B2B3B4B5B6.
  • the first 7 bits of the scrambling sequence include the first bit B0, the second bit B1, the third bit B2, the fourth bit B3, and the fifth bit B4.
  • the sixth bit B5 and the seventh bit B6 For any one of the bandwidth modes, such as the 20 mega bandwidth mode, the 40 mega bandwidth mode, the 80 mega bandwidth mode, the 160 (80 + 80) mega bandwidth mode, the 240 mega bandwidth mode, and the 320 mega bandwidth mode, see Table 1.
  • the second bit B1, the third bit B2, and the fourth bit B3 of the first 7 bits of the scrambling sequence are used to indicate the bandwidth mode.
  • the fourth bit B3, the sixth bit B5, and the seventh bit B6 of the first 7 bits of the scrambling sequence may be used to indicate the any bandwidth mode.
  • the channel includes one master subchannel and M slave subchannels, where M is greater than or equal to 3, and the bandwidth of the master subchannel may be greater than or equal to 20MHz, the bandwidth of each slave subchannel can be greater than or equal to 20MHz.
  • the bandwidth mode of the channel may also be a preamble puncture mode. In the preamble puncture mode, at least one of the channels is not available from a subchannel.
  • the second device Before the second device performs data communication with the first device, the second device can perform puncturing in the channel.
  • the subchannels that are punctured are slave subchannels, and the slave subchannels that are punctured are not available. That is, it cannot be used for data communication, and the subchannels that are not punctured are available, and can be used for data communication.
  • the preamble punctuation mode can be further divided into the following first mode, second mode, third mode, and fourth mode:
  • the first mode is punching in the 80MHz channel, and only the secondary 20MHz channel (S20 channel) is dropped;
  • the second mode is to perform puncturing in the 80MHz channel, and only one 20MHz channel (S40-low or S40-High) of the secondary 40MHz channel is dropped;
  • the third mode is to perform puncturing in 160MHz or 80 + 80MHz channels. Only the 20MHz channel (S20 channel) is punctured in the main 80MHz channel, and arbitrary puncturing can be performed at a granularity of 20MHz from the 80MHz channel.
  • the fourth mode is to perform puncturing in 160MHz or 80 + 80MHz channels.
  • the main 80MHz channel the main 40MHz channel is available. From 40MHz and 80MHz channels, arbitrary puncturing can be performed with a granularity of 20MHz.
  • At least three bits of the first 7 bits of the scrambling code sequence may be used to indicate the preamble mode of the channel.
  • each of the at least three bits corresponds to at least one The value of the bit corresponding to the slave subchannel is used to indicate whether the slave subchannel is available.
  • the bit corresponding to the slave subchannel when the value of the bit corresponding to the slave subchannel is 1, the bit is used to indicate that the slave subchannel is available. When the value of the bit corresponding to the slave subchannel is 0, the bit is used to indicate The slave subchannel is not available; or,
  • the bit corresponding to the slave subchannel When the value of the bit corresponding to the slave subchannel is 0, the bit is used to indicate that the slave subchannel is available. When the value of the bit corresponding to the slave subchannel is 1, the bit is used to indicate the slave subchannel. unavailable.
  • the bandwidth indicated by the first 7 bits of the scrambling sequence is not more than 160MHz
  • 7 bits are used to indicate, each of which corresponds to a 20MHz subchannel except the main 20MHz subchannel, and corresponding to B0 to B7 respectively.
  • the 20MHz subchannels are arranged from low to low frequencies.
  • bit B0 corresponds to the sub-channel S20
  • bit B1 corresponds to the sub-channel S40-Low
  • bit B2 corresponds to the sub-channel S40-High
  • B3-B6 corresponds to four 20MHz from 80MHz, respectively. channel.
  • each bit thereof corresponds to one or more 20 MHz sub-channels except the main 20 MHz sub-channel.
  • the total bandwidth is 320MHz
  • 5 bits can be used to indicate that one bit indicates a subchannel from 20MHz
  • one bit indicates a subchannel from 40MHz
  • the other three bits indicate three 80MHz channels that do not include the main 20MHz subchannel. Subchannel.
  • Step 203a The second device sends the first non-HT format frame or the first non-HT duplicated frame to the first device, and the process ends.
  • the first device receives a frame in the first non-HT format or a frame in the first non-HT duplicated format, acquires the at least three bits of the first 7 bits of the scrambling sequence of the frame in the first non-HT format, and determines The bandwidth mode of the channel indicated by the at least three bits; or, the first device acquires the at least three bits of the first seven bits of the scrambling sequence of the frame in the first non-HT duplicated format to determine the at least three bits indication The bandwidth mode of the channel.
  • Step 202b When the device type of the first device is a VHT site or a HE site that does not support EHT, the second device generates a second non-HT format frame or a second non-HT duplicated format frame.
  • two of the first 7 bits of the scrambling sequence of the frame in the second non-HT format indicate the channel bandwidth mode
  • one of the first 7 bits of the scrambling sequence of the frame in the second non-HT format Two bits indicate the bandwidth mode of the channel, which is a channel between the first device and the second device.
  • the bandwidth mode indicated by the two bits may be any one of a 20 mega bandwidth mode, a 40 mega bandwidth mode, an 80 mega bandwidth mode, and a 160 (80 + 80) mega bandwidth mode.
  • the first 7 bits of the scrambling code sequence are B0B1B2B3B4B5B6.
  • the first 7 bits of the scrambling code sequence include the first bit B0, the second bit B1, the third bit B2, the fourth bit B3, and the fifth Bit B4, sixth bit B5, and seventh bit B6.
  • the sixth bit B5 and the seventh bit B6 are used to indicate any of the 20 mega bandwidth mode, the 40 mega bandwidth mode, the 80 mega bandwidth mode, and the 160 (80 + 80) mega bandwidth mode. Species.
  • Step 203b The second device sends a second non-HT format frame or a second non-HT duplicated frame to the first device.
  • the first device receives a frame in a second non-HT format or a frame in a second non-HT duplicated format, obtains the two bits in the first 7 bits of the scrambling sequence of the frame in the second non-HT format, and determines the The bandwidth mode of the channel indicated by the two bits; or, the first device obtains the two bits in the first 7 bits of the scrambling sequence of the frame in the second non-HT duplicated format, and determines the channel indicated by the two bits. Bandwidth mode.
  • the frames in the first non-HT format, the frames in the first non-HT format, the frames in the second non-HT format, and the frames in the second non-HT format may all be sent by request (Request To To Send , RTS) frame.
  • steps 202a-203a and steps 202b-203b are two parallel and independent processes.
  • the device type of the second device is an EHT station
  • at least three bits of the first 7 bits of the scrambling sequence of the first non-HT format frame generated by the second device indicate the channel's The bandwidth mode, or at least three bits of the first 7 bits of the scrambling sequence of the first non-HT duplicated frame generated by the second device indicates the bandwidth mode of the channel. Since at least three bits can indicate more than four bandwidth modes, the bandwidth modes that can be indicated to the first device through the at least three bits include not only 20 mega bandwidth mode, 40 mega bandwidth mode, 80 mega bandwidth mode, and 160 (80 +80) There are four new mega-bandwidth modes including 240 mega-bandwidth mode and / or 320 mega-bandwidth mode.
  • an embodiment of the present application provides a bandwidth mode indication method.
  • the method can be applied to the communication system shown in FIG. 1-1 or FIG. 1-2, including:
  • Step 301 The second device generates a frame in a first non-HT format or a frame in a first non-HT duplicated format.
  • At least three bits of the first 7 bits of the scrambling sequence of the frame of the first non-HT format indicate the channel bandwidth mode
  • the frame of the first non-HT format contains the first indication information
  • the first indication information is used for At least three bits of the first 7 bits of the scrambling sequence indicating whether to use the frame of the first non-HT format indicate the bandwidth mode
  • the first 7 bits of the scrambling sequence of the first non-HT frame of the duplicated format At least three bits in the indication channel bandwidth mode and the first non-HT duplicated format frame include first indication information
  • the channel is a channel between the first device and the second device
  • the first indication information is used to indicate Whether to use at least three of the first seven bits of the scrambling sequence of the frame in the first non-HT duplicated format indicates the bandwidth mode.
  • the second device For a non-HT duplicated frame or a non-HT format frame, when the channel includes a subchannel, the second device generates a first non-HT format frame; when the channel includes multiple subchannels, the second device Generate the first non-HT duplicated frame.
  • the second device executes the method of this embodiment to indicate the channel bandwidth mode to the first device
  • the second device is an EHT site
  • the first device may be an EHT site.
  • the first device may be a VHT site or an HE site that does not support EHT.
  • the frame in the first non-HT format generated by the second device includes the first indication information, or the frame in the first non-HT duplicated format generated includes the first indication information, and the first indication information is passed through the first indication information. Tell the first device whether to use at least three bits of the first 7 bits of the scrambling sequence to indicate the bandwidth mode.
  • the first indication information may be a globally unique / local execution bit in a transmission address field of the first non-HT format frame, or a unicast / Broadcast bit, or To Distributed System (ToDS) field, From Distributed System (FromDS) field, or Retry in the Frame Control field of the first non-HT format frame Field.
  • ToDS To Distributed System
  • FromDS From Distributed System
  • the sending address field or receiving address field includes 6 bytes.
  • the first byte includes bits b0, b1, b2, b3, b4, b5, b6, and b7.
  • b1 bit in the first byte of the sending address field is globally unique / locally executed bit, that is, the first indication information is b1 bit.
  • the receiving address field is shown in Figure 3-2
  • the b0 bit in the first byte of the receiving address field is a unicast / broadcast bit, that is, the first indication information is a b0 bit.
  • At least three of the first 7 bits of the scrambling sequence indicate the bandwidth mode.
  • the Frame Control field includes a Protocol Version field, a Type field, a Subtype field, a ToDS field, From DS field, More Fragments field, Retry field, Power Management field, More Data field, Protected Frame field, and Command (+ HTC / Order) field.
  • the first indication information may be a globally unique / locally executed bit in a transmission address field of the first non-HT duplicated frame, or a single address in a reception address field of the first non-HT duplicated frame.
  • sending address field, receiving address field, and Frame Control field of the first non-HT duplicated frame refer to the foregoing description of the sending address field, receiving address field, and Frame Control field of the first non-HT frame. , Will not be described in detail here.
  • each channel in the at least one channel corresponds to a bandwidth mode.
  • bandwidth modes including 20 mega bandwidth mode, 40 mega bandwidth mode, 80 mega bandwidth mode, and 160 mega bandwidth mode, it can also include new bandwidth modes such as 240 mega bandwidth mode and 320 mega bandwidth mode.
  • the bandwidth mode that can be indicated by the at least three bits can include a bandwidth of 240 megabytes, in addition to four types of 20 megaband, 40 megaband, 80 megaband, and 160 (80 + 80) megaband modes. New bandwidth modes such as mode and / or 320 mega bandwidth mode.
  • the first 7 bits of the scrambling code sequence are B0B1B2B3B4B5B6, and the first 7 bits of the scrambling code sequence include the first bit B0, the second bit B1, the third bit B2, the fourth bit B3, and the fifth Bit B4, sixth bit B5, and seventh bit B6.
  • the second bit B1, the third bit B2, and the fourth bit B3 of the first 7 bits of the B indicate the bandwidth mode.
  • the fourth bit B3, the sixth bit B5, and the seventh bit B6 of the first 7 bits of the scrambling sequence may be used to indicate the any one of the bandwidth modes.
  • the channel includes a master subchannel and M slave subchannels, where M is greater than or equal to 3, and the bandwidth of the master subchannel may be greater than or equal to 20MHz
  • the bandwidth of each slave subchannel can be greater than or equal to 20MHz.
  • the bandwidth mode of the channel may also be a preamble punctuation mode, in which at least one of the sub-channels of the channel is unavailable.
  • the second device Before the second device performs data communication with the first device, the second device can perform puncturing in the channel.
  • the subchannels that are punctured are slave subchannels, and the slave subchannels that are punctured are not available. That is, it cannot be used for data communication, and the subchannels that are not punctured are available, and can be used for data communication.
  • the preamble punctuation mode can be further divided into the following first mode, second mode, third mode, and fourth mode:
  • the first mode is punching in the 80MHz channel, and only the secondary 20MHz channel (S20 channel) is dropped;
  • the second mode is to perform puncturing in the 80MHz channel, and only one 20MHz channel (S40-low or S40-High) of the secondary 40MHz channel is dropped;
  • the third mode is to perform puncturing in 160MHz or 80 + 80MHz channels. Only the 20MHz channel (S20 channel) is punctured in the main 80MHz channel, and arbitrary puncturing can be performed at a granularity of 20MHz from the 80MHz channel.
  • the fourth mode is to perform puncturing in 160MHz or 80 + 80MHz channels.
  • the main 80MHz channel the main 40MHz channel is available. From 40MHz and 80MHz channels, arbitrary puncturing can be performed with a granularity of 20MHz.
  • At least three bits of the first 7 bits of the scrambling code sequence may be used to indicate the preamble mode of the channel.
  • each of the at least three bits corresponds to at least one The value of the bit corresponding to the slave subchannel is used to indicate whether the slave subchannel is available.
  • the bit corresponding to the slave subchannel when the value of the bit corresponding to the slave subchannel is 1, the bit is used to indicate that the slave subchannel is available. When the value of the bit corresponding to the slave subchannel is 0, the bit is used to indicate The slave subchannel is not available; or,
  • the bit corresponding to the slave subchannel When the value of the bit corresponding to the slave subchannel is 0, the bit is used to indicate that the slave subchannel is available. When the value of the bit corresponding to the slave subchannel is 1, the bit is used to indicate the slave subchannel. unavailable.
  • the bandwidth indicated by the first 7 bits of the scrambling sequence is not more than 160MHz
  • 7 bits are used to indicate, each of which corresponds to a 20MHz subchannel except the main 20MHz subchannel, and corresponding to B0 to B7 respectively.
  • the 20MHz subchannels are arranged from low to low frequencies.
  • bit B0 corresponds to the sub-channel S20
  • bit B1 corresponds to the sub-channel S40-Low
  • bit B2 corresponds to the sub-channel S40-High
  • B3-B6 corresponds to four 20MHz from 80MHz, respectively. channel.
  • each bit thereof corresponds to one or more 20 MHz sub-channels except the main 20 MHz sub-channel.
  • the total bandwidth is 320MHz
  • 5 bits can be used to indicate that one bit indicates a subchannel from 20MHz
  • one bit indicates a subchannel from 40MHz
  • the other three bits indicate three 80MHz channels that do not include the main 20MHz subchannel. Subchannel.
  • Step 302 The second device sends a first non-HT format frame or a first non-HT duplicated frame to the first device.
  • the first device receives a frame in a first non-HT format or a frame in a first non-HT duplicated format, obtains first indication information included in the frame in the first non-HT format, and determines the first non-HT according to the first instruction information. At least three bits of the first 7 bits of the scrambling sequence of the frame of the format indicate the channel bandwidth mode, then the at least three bits are obtained from the first 7 bits of the scrambling sequence of the frame of the first non-HT format To determine the bandwidth mode of the channel indicated by the at least three bits; or the first device acquires the first indication information contained in the frame in the first non-HT duplicated format, and determines the first non-HT duplicated format according to the first indication information.
  • At least three bits in the frame indicate the bandwidth mode of the channel, then the at least three bits are obtained from the first seven bits of the scrambling sequence of the frame in the first non-HT duplicated format, and the channel indicated by the at least three bits is determined Bandwidth mode.
  • the first non-HT format frame, the first non-HT duplicated format frame, and the non-HT format non-HT duplicated frame may all be RTS frames.
  • At least three bits of the first 7 bits of the scrambling sequence of the first non-HT format frame generated by the second device indicate the channel bandwidth mode and the first non-HT format frame contains The first indication information, or at least three bits of the first 7 bits of the scrambling sequence of the first non-HT duplicated format frame generated by the second device indicates the channel bandwidth mode and the first non-HT duplicated format
  • the frame contains first indication information.
  • the first device can determine that at least three of the first 7 bits of the scrambling sequence indicate a bandwidth mode according to the first indication information.
  • the bandwidth mode indicated to the first device includes not only four modes of 20 mega bandwidth mode, 40 mega bandwidth mode, 80 mega bandwidth mode, and 160 (80 + 80) mega bandwidth mode, but also 240 mega bandwidth mode and / or 320 mega bandwidth New bandwidth modes such as bandwidth mode.
  • an embodiment of the present application provides a channel indication method, which can be applied to the communication system shown in FIG. 1-1 or FIG. 1-2, including:
  • Step 401 The first device receives a first advanced Advanced Request (RTS-A) frame in non-HT format or a first non-HT duplicated RTS-A frame sent by the second device.
  • RTS-A advanced Advanced Request
  • Each of the first 7 bits of the scrambling sequence of the RTS-A frame in the non-HT format corresponds to at least one slave subchannel in the channel, and the first non-HT duplicated format
  • Each of the at least three bits of the first 7 bits of the scrambling sequence of the RTS-A frame corresponds to at least one slave subchannel of the channel, and the channel is the first device and the first For a channel between two devices, the value of the bit corresponding to the subchannel is 0 to indicate that the corresponding subchannel is unavailable, and the value of 1 indicates that the corresponding subchannel is available.
  • the RTS-A frame is an RTS frame that uses at least three of the first 7 bits of the scrambling sequence to carry bandwidth information.
  • each of the first 7 bits of the scrambling code sequence corresponds to a 20 MHz slave sub-channel in the 160 (80 + 80) MHz except the master 20 MHz sub-channel.
  • Setting a bit to 0 means that the corresponding 20MHz slave subchannel is unavailable, and setting a bit to 1 means that the corresponding 20MHz slave subchannel is available.
  • the first 7 bits of the scrambling sequence cannot be all 0, it is not allowed to set all 7 bits to 0 here, that is, this scheme cannot be adopted when the RTS-A frame is transmitted using only the main 20MHz subchannel. It should be particularly emphasized that when the RTS-A frame is transmitted using a bandwidth not exceeding 80 MHz, 7 bits are still used for indication. In this case, the 4 bits corresponding to the slave 80 MHz channel are set to 0.
  • the RTS-A frame is a new frame type or a new trigger frame.
  • the RTS-A frame carries a bit map, and each bit in the bit map corresponds to a 20 MHz subchannel. Since a new type of frame is introduced in this implementation, the size of the bitmap can be expanded at will. Therefore, it can be extended to a bandwidth of more than 160MHz. For example, when the maximum communication bandwidth is 320 MHz, a 16-bit bit map can be used, where each bit corresponds to a 20 MHz subchannel. Since the main 20MHz subchannel must be used, optionally, the bit corresponding to the main 20MHz subchannel may be set as a reserved bit.
  • the RTS-A frame is a CTS-to-self frame.
  • the CTS-to-self frame is duplicated in a non-HT duplicate format on all available 20MHz subchannels including the main 20MHz subchannel. It should be noted that for this embodiment, the first device will not perform any form of reply after receiving the CTS-to-self frame, that is, there is no advanced clear transmission frame to be introduced below in this embodiment. (Clear, Advanced, CTS-A) frames.
  • Step 402 The first device detects status information of each subchannel included in the channel.
  • the first device may detect status information of each subchannel between the first device and the second device, and the status information of the subchannel may be idle or busy.
  • Step 403 The first device generates a CTS-A frame according to the first non-HT format RTS-A frame and the status information of each subchannel included in the channel, or according to the first non-HT duplicated format RTS-A frame and The status information of each sub-channel included in the channel generates a CTS-A frame.
  • the CTS-A frame carries a bit map, and each bit in the bit map is used to indicate whether a corresponding sub-channel is available.
  • the CTS-A frame is a Clear To Send (CTS) frame.
  • CTS frames are sent in a non-HT or non-HT duplicated format.
  • CTS duplicated format only repeat on the available 20MHz subchannel;
  • the CTS-A frame is a frame carrying the A-Control field of a Bandwidth Query Report (BQR).
  • BQR Bandwidth Query Report
  • the BQR carries an 8-bit bitmap, and each bit corresponds to a 20MHz subchannel.
  • the CTS-A frame is a frame carrying a new type of A-Control field.
  • the new type of A-Control field carries a bitmap, and each bit corresponds to a 20MHz subchannel. Since a new type of A-Control field is introduced in this implementation, the size of the bitmap can be expanded at will. Therefore, it can be extended to a bandwidth of more than 160MHz. For example, when the maximum communication bandwidth is 320 MHz, a 16-bit bit map can be used, where each bit corresponds to a 20 MHz channel. Since the main 20 MHz channel must be used, optionally, the bits corresponding to the main 20 MHz channel can be set as reserved bits or a 15-bit bit map is used.
  • the CTS-A frame is a new type of frame.
  • the new type of frame carries a bitmap, and each bit corresponds to a 20MHz subchannel. Since a new type of frame is introduced in this implementation, the size of the bitmap can be expanded at will. Therefore, it can be extended to a bandwidth of more than 160MHz. For example, when the maximum communication bandwidth is 320 MHz, a 16-bit bit map can be used, where each bit corresponds to a 20 MHz subchannel. Since the main 20MHz subchannel must be used, optionally, the bits corresponding to the main 20MHz subchannel may be set as reserved bits or a 15-bit bitmap may be used.
  • Step 404 The first device sends the CTS-A frame to the second device on the subchannel corresponding to the bit whose value is 1 in the bitmap.
  • the first device generates a CTS-A frame, and a bit map of the CTS-A frame is used to indicate a subchannel for data communication and a subchannel that is not used for data communication in the channel, and sends the second channel to the second device After sending the CTS-A frame, the two parties negotiated a sub-channel for data communication to implement bandwidth negotiation.
  • an embodiment of the present application provides a bandwidth mode indicating device 500.
  • the device 500 may be the second device or a part of the second device in the embodiment shown in FIG. 1-1 or FIG. 2-1. Including: a processing unit 501 and a sending unit 502;
  • a processing unit 501 is configured to generate a scrambling code of a first non-HT format frame or a first non-HT duplicated format and a first non-HT format frame when the first device is an extremely high-throughput EHT site. At least three bits in the first 7 bits of the sequence indicate the bandwidth mode of the channel, and at least three bits in the first 7 bits of the scrambling sequence of the frame in the first non-HT duplicated frame indicate the bandwidth mode of the channel. Is a channel between the first device and the apparatus 500; the processing unit 501 is further configured to generate a second non-HT format frame or a second non-HT format when the first device is a VHT station or a HE station that does not support EHT.
  • two of the first 7 bits of the scrambling sequence of the second non-HT format frame indicate the bandwidth mode of the channel
  • scrambling sequences of the second non-HT frame in the duplicated format Two of the first 7 bits indicate the bandwidth mode of the channel, which is the channel between the first device and the device 500;
  • a sending unit 502 configured to send a frame in a first non-HT format or a frame in a first non-HT duplicated format to a first device;
  • the sending unit 502 is further configured to send the frame in the second non-HT format or the frame in the second non-HT duplicated format to the first device.
  • the three bits are the second, third, and fourth bits of the first seven bits of the scrambling sequence, or the three bits Is the fourth, sixth, and seventh bits of the first 7 bits of the scrambling sequence.
  • the channel includes a 20 MHz master sub-channel and M 20 MHz slave sub-channels, M is greater than or equal to 3, and each of the at least three bits corresponds to at least one slave sub-channel, and the bits corresponding to the slave sub-channel The value of is used to indicate whether the slave subchannel is available.
  • the bit corresponding to the slave subchannel when the value of the bit corresponding to the slave subchannel is 1, the bit is used to indicate that the slave subchannel is available. When the value of the bit corresponding to the slave subchannel is 0, the bit is used to indicate The slave subchannel is not available; or,
  • the bit corresponding to the slave subchannel When the value of the bit corresponding to the slave subchannel is 0, the bit is used to indicate that the slave subchannel is available. When the value of the bit corresponding to the slave subchannel is 1, the bit is used to indicate the slave subchannel. unavailable.
  • the device type of the second device is an EHT site
  • at least three bits of the first 7 bits of the scrambling sequence of the first non-HT format frame generated by the processing unit indicate the channel bandwidth.
  • Mode, or at least three bits of the first 7 bits of the scrambling sequence of the first non-HT duplicated frame generated by the second device indicate the channel bandwidth mode. Since at least three bits can indicate more than four bandwidth modes, the bandwidth modes that can be indicated to the first device through the at least three bits include not only 20 mega bandwidth mode, 40 mega bandwidth mode, 80 mega bandwidth mode, and 160 (80 +80) There are four new mega-bandwidth modes including 240 mega-bandwidth mode and / or 320 mega-bandwidth mode.
  • an embodiment of the present application provides a bandwidth mode indicating device 600.
  • the device 600 may be the second device or a part of the second device in the embodiment shown in FIG. 1-1 or FIG. 3-1. ,include:
  • the processing unit 601 is configured to generate a frame in a first non-HT format or a frame in a first non-HT format.
  • the first non-HT format frame includes first indication information, and whether the first indication information is used to indicate whether to use At least three of the first 7 bits of the scrambling sequence indicate the bandwidth mode.
  • the first non-HT duplicated frame contains the first indication information, and the channel is the channel between the first device and the device 600. Whether the first indication information is used to indicate whether to use at least three bits of the first 7 bits of the scrambling sequence to indicate the bandwidth mode;
  • the sending unit 602 is configured to send a frame in a first non-HT format or a frame in a first non-HT duplicated format to the first device.
  • At least three bits of the first 7 bits of the scrambling code sequence of the first non-HT format frame indicate the bandwidth mode of the channel.
  • At least three of the first seven bits of the scrambling sequence of the frame in the first non-HT duplicated format indicate the bandwidth mode of the channel.
  • the first indication information is a globally unique / local execution bit in a transmission address field of the first non-HT format frame, or a first unique information in a reception address field of the first non-HT format frame.
  • the first indication information is a globally unique / locally executed bit in a transmission address field of the first non-HT duplicated format frame, or is reception of the first non-HT duplicated format frame
  • the scrambling code of the frame in the first non-HT format when three of the first 7 bits of the scrambling code sequence of the frame in the first non-HT format indicate a channel bandwidth mode, or the scrambling code of the frame in the first non-HT duplicated format
  • the three bits are the second, third, and fourth bits of the first 7 bits of the scrambling sequence
  • the three bits are a fourth bit, a sixth bit, and a seventh bit of the first 7 bits of the scrambling code sequence.
  • the channel includes a 20MHz master subchannel and M 20MHz slave subchannels, where M is greater than or equal to 3, and each of the at least three bits corresponds to at least one slave subchannel and the slave subchannel corresponds to The value of the bit is used to indicate whether the slave subchannel is available.
  • the bit when the value of the bit corresponding to the slave subchannel is 1, the bit is used to indicate that the slave subchannel is available.
  • all The bit is used to indicate that the slave subchannel is unavailable; or, when the value of the bit corresponding to the slave subchannel is 0, the bit is used to indicate that the slave subchannel is available, and when the slave subchannel is available.
  • the bit is used to indicate that the slave subchannel is unavailable.
  • At least three bits of the first 7 bits of the scrambling sequence of the first non-HT format frame generated by the processing unit indicate the channel bandwidth mode and the first non-HT format frame carries the first An indication information, or at least three bits of the first 7 bits of the scrambling sequence of the first non-HT duplicated format frame generated by the second device indicating the channel bandwidth mode and the first non-HT duplicated format frame Carry the first instruction information.
  • the first device can determine that at least three of the first 7 bits of the scrambling sequence indicate a bandwidth mode according to the first indication information.
  • the bandwidth mode indicated to the first device includes not only the four modes of 20 mega bandwidth mode, 40 mega bandwidth mode, 80 mega bandwidth mode, and 160 (80 + 80) mega bandwidth mode, but also 240 mega bandwidth mode and / or 320 mega bandwidth mode New bandwidth modes such as bandwidth mode.
  • an embodiment of the present application provides a channel indicating device 700.
  • the device 700 may be the first device or a part of the first device in the embodiment shown in FIG. 1-1 or FIG. 4 described above, including:
  • the receiving unit 701 is configured to receive the first non-HT format RTS-A frame or the first non-HT duplicated format RTS-A frame and the first non-HT format RTS-A frame sent by the second device.
  • Each of the at least three bits of the first 7 bits of the code sequence corresponds to at least one of the sub-channels, the first 7 bits of the scrambling sequence of the first non-HT duplicated RTS-A frame
  • Each of the at least three bits corresponds to at least one slave subchannel in the channel, which is a channel between the apparatus 700 and the second device, and the value of the bit corresponding to the slave channel is used to indicate the slave Whether the subchannel is available;
  • a processing unit 702 configured to detect status information of each subchannel included in the channel; and generate a CTS-A frame according to the first non-HT format RTS-A frame and the status information of each subchannel included in the channel, or according to the CTS -A first non-HT frame in duplicated format and status information of each subchannel included in the channel generate a CTS-A frame.
  • the CTS-A frame includes a bitmap. When the first non-HT format frame or the first non-HT A frame in the HT duplicated format indicates that a subchannel is available and the channel status of the subchannel is idle, then the bit corresponding to a subchannel in the bitmap is set to 1, otherwise, the bit corresponding to a subchannel in the bitmap is set to 0 ;
  • the sending unit 703 is configured to send a CTS-A frame to the second device on the subchannel corresponding to the bit whose value is 1 in the bit map.
  • the RTS-A frame is an RTS frame that uses at least three of the first 7 bits of the scrambling sequence to carry bandwidth information.
  • the RTS-A frame is a new frame type or a new trigger frame.
  • the RTS-A frame carries a bit map, and each bit in the bit map corresponds to a 20 MHz channel.
  • the CTS-A frame is a CTS frame.
  • the CTS-A frame is a frame carrying the A-Control field of the BQR.
  • the CTS-A frame is a frame carrying a new type of A-Control field.
  • the first device generates a CTS-A frame, and a bit map of the CTS-A frame is used to indicate a subchannel for data communication and a subchannel that is not used for data communication in the channel, and sends the second channel to the second device After sending the CTS-A frame, the two parties negotiated a sub-channel for data communication to implement bandwidth negotiation.
  • FIG. 8 is another schematic diagram of a bandwidth mode indicating device 800 according to an embodiment of the present application.
  • the device 800 may be an application specific integrated circuit, one or more FPGAs (field programmable gate arrays), PLDs (programmable logic devices), controllers, state machines, gate logic, discrete hardware components, any other suitable circuit, or Any combination of circuits, chips, single boards, or communication devices that can perform the various functions described throughout this application.
  • the device 800 is configured in the second device in the embodiment shown in FIG. 2-1 or the device in the embodiment shown in FIG. 5, and may be used to execute the second device in the method shown in FIG. 2-1. What to do.
  • the device 800 includes: an input-output interface 801, a processor 802, and a memory 803.
  • the input / output interface 801, the processor 802, and the memory 803 may be connected through a bus system 804.
  • the memory 803 is configured to store a program, an instruction, or a code.
  • the processor 802 is configured to execute a program, an instruction, or code in the memory 803 to control the input / output interface 801 to receive or send signals and implement the implementation by the second device in the implementation manner corresponding to FIG. 2-1. The steps and functions are not repeated here.
  • the input / output interface 801 and the processor 802 reference may be made to the specific descriptions of the sending unit 502 and the processing unit 501 in FIG. 5 described above, and details are not described herein again.
  • FIG. 9 is another schematic diagram of a bandwidth mode indicating device 900 according to an embodiment of the present application.
  • the device 900 may be an application specific integrated circuit, one or more FPGAs (field programmable gate arrays), PLDs (programmable logic devices), controllers, state machines, gate logic, discrete hardware components, any other suitable circuit, or Any combination of circuits, chips, single boards, or communication devices that can perform the various functions described throughout this application.
  • the device 900 is configured in the second device in the embodiment shown in FIG. 3-1 or the device in the embodiment shown in FIG. 6, and may be used to execute the second device in the method shown in FIG. 3-1. What to do.
  • the device 900 includes: an input-output interface 901, a processor 902, and a memory 903.
  • the input / output interface 901, the processor 902, and the memory 903 may be connected through a bus system 904.
  • the memory 903 is configured to store a program, an instruction, or a code.
  • the processor 902 is configured to execute a program, an instruction, or a code in the memory 903 to control the input / output interface 901 to receive or send signals and implement the implementation of the second device in the embodiment corresponding to the above 3-1. The steps and functions are not repeated here.
  • the input / output interface 901 and the processor 902 reference may be made to the specific descriptions of the sending unit 602 and the processing unit 601 in FIG. 6 described above, and details are not described herein again.
  • FIG. 10 is another schematic diagram of a bandwidth mode indicating device 1000 according to an embodiment of the present application.
  • the device 1000 may be an application specific integrated circuit, one or more FPGAs (field programmable gate arrays), PLDs (programmable logic devices), controllers, state machines, gate logic, discrete hardware components, any other suitable circuit, or Any combination of circuits, chips, single boards, or communication devices that can perform the various functions described throughout this application.
  • the device 1000 is configured in the first device in the embodiment shown in FIG. 4 or the device in the embodiment shown in FIG. 7, and may be used to perform operations performed by the first device in the method shown in FIG. 4.
  • the device 1000 includes: an input-output interface 1001, a processor 1002, and a memory 1003.
  • the input / output interface 1001, the processor 1002, and the memory 1003 may be connected through a bus system 1004.
  • the memory 1003 is configured to store a program, an instruction, or a code.
  • the processor 1002 is configured to execute a program, an instruction, or a code in the memory 1003 to control the input / output interface 1001 to receive or send signals and implement steps performed by the first device in the implementation manner corresponding to the foregoing 4 And functions are not repeated here.
  • the specific implementation of the input / output interface 1001 can be referred to the specific description of the receiving unit 701 and the sending unit 703 in FIG. 7, and the specific implementation of the processor 1002 can be referred to the specific description of the processing unit 702 in FIG. 7. No longer.
  • the program may be stored in a computer-readable storage medium.
  • the storage medium mentioned may be a read-only memory, a magnetic disk or an optical disk.

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Abstract

本申请提供了一种带宽模式指示方法、信道指示方法及装置,涉及通信领域,所述方法包括:当第一设备为EHT站点时,第二设备生成第一non-HT格式的帧或第一non-HT duplicated格式的帧,所述第一non-HT格式的帧或所述第一non-HT duplicated格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式;向所述第一设备发送所述第一non-HT格式的帧或所述第一non-HT duplicated格式的帧;当第一设备为不支持EHT的VHT站点或HE站点时,第二设备生成第二non-HT格式的帧或第二non-HT duplicated格式的帧,所述第二non-HT格式的帧或所述第二non-HT duplicated格式的帧的扰码序列的前7个比特中的两个比特指示所述信道的带宽模式,向所述第一设备发送所述第二non-HT格式的帧或所述第二non-HT duplicated格式的帧。本申请能够实现向第一设备发送新的带宽模式。

Description

一种带宽模式指示方法、信道指示方法及装置
本申请要求于2018年6月20日提交的申请号为201810636395.2、发明名称为“一种带宽模式指示方法、信道指示方法及装置”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域,特别涉及一种带宽模式指示方法、信道指示方法及装置。
背景技术
在无线局域网中,发送端与接收端所处的无线信道环境不同,发送端与接收端在进行数据通信之前,如果能够根据两者的信道可用情况,协商出可用的带宽,将对两者的数据通信是非常有用的。
为了协商出可用的带宽,目前发送端在进行数据通信前,可以向接收端发送信道的带宽模式,目前带宽模式包括20兆带宽模式、40兆带宽模式、80兆带宽模式和160(80+80)兆带宽模式,这样接收端可以根据该带宽模式预留可用的带宽,供其与发送端之间进行数据通信。
在实现本申请的过程中,发明人发现现有技术至少存在以下问题:
目前有四种带宽模式,随着技术发展出现新的带宽模式,目前的技术无法将新的带宽模式发送至接收端。
发明内容
为了向接收端发送新的带宽模式,本申请提供了一种带宽模式指示方法及装置。所述技术方案如下:
第一方面,本申请实施例提供了一种带宽模式指示方法,在所述方法中:当第一设备为极端高吞吐量EHT站点时,第二设备生成第一非高吞吐量non-HT格式的帧或第一非高吞吐量复制non-HT duplicated格式的帧,所述第一non-HT格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式,所述第一non-HT duplicated格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式,所述信道为所述第一设备与第二设备之间的信道;向所述第一设备发送所述第一non-HT格式的帧或所述第一non-HT duplicated格式的帧;当第一设备为不支持EHT的非常高吞吐量VHT站点或高效HE站点时,第二设备生成第二non-HT格式的帧或第二non-HT duplicated格式的帧,所述第二non-HT格式的帧的扰码序列的前7个比特中的两个比特指示所述信道的带宽模式,所述第二non-HT duplicated格式的帧的扰码序列的前7个比特中的两个比特指示所述信道的带宽模式,所述信道为所述第一设备与第二设备之间的信道;向所述第一设备发送所述第二non-HT格式的帧或所述第二non-HT duplicated格式的帧。其中,当第一设备为极端高吞吐量EHT站点时,由于采用扰码 序列的前7个比特中的至少三个比特指示信道的带宽模式,该至少三个比特指示的带宽模式的种类超出四种,从而可以指示新的带宽模式,以实现向第一设备发送新的带宽模式。
在第一方面的一种可能的实现方式中,当所述第一non-HT格式的帧的扰码序列的前7个比特中的三个比特指示信道的带宽模式,或者所述第一non-HT duplicated格式的帧的扰码序列的前7个比特中的三个比特指示信道的带宽模式时,所述三个比特为所述扰码序列的前7个比特中的第二个比特、第三个比特和第四个比特,或者,所述三个比特为所述扰码序列的前7个比特中的第四个比特、第六个比特和第七个比特。该三个比特可以指示超出四种带宽模式,从而可以指示新的带宽模式,以实现向第一设备发送新的带宽模式。
在第一方面的另一种可能的实现方式中,所述信道包括一个20MHz的主子信道和M个20MHz的从子信道,M大于或等于3,所述至少三个比特中的每个比特对应至少一个从子信道,从子信道对应的比特的取值用于指示所述从子信道是否可用。其中preamble puncture模式包括多种模式,由于该至少三个比特中每个比特对应至少一个从子信道,这样可以向第一设备指示出preamble puncture模式包括的多种模式。
在第一方面的另一种可能的实现方式中,当所述从子信道对应的比特的取值为1时,所述比特用于指示所述从子信道可用,当所述从子信道对应的比特的取值为0时,所述比特用于指示所述从子信道不可用;或者,当所述从子信道对应的比特的取值为0时,所述比特用于指示所述从子信道可用,当所述从子信道对应的比特的取值为1时,所述比特用于指示所述从子信道不可用。
第二方面,本申请实施例提供了一种带宽模式指示方法,在所述方法中:第二设备生成第一非高吞吐量non-HT格式的帧或第一非高吞吐量复制non-HT duplicated格式的帧,所述第一non-HT格式的帧包含第一指示信息,所述第一指示信息用于指示是否使用所述第一non-HT格式的帧的扰码序列的前7个比特中的至少三个比特指示所述带宽模式,所述第一non-HT duplicated格式的帧包含第一指示信息,所述第一指示信息用于指示是否使用所述第一non-HT duplicated格式的帧的扰码序列的前7个比特中的至少三个比特指示所述带宽模式;所述第二设备向所述第一设备发送所述第一non-HT格式的帧或所述第一non-HT duplicated格式的帧。这样第一设备可以根据第一指示信息确定是否使用扰码序列的前7个比特中的至少三个比特指示带宽模式,由于采用扰码序列的前7个比特中的至少三个比特指示信道的带宽模式,该至少三个比特指示的带宽模式的种类超出四种,从而可以指示新的带宽模式,以实现向第一设备发送新的带宽模式。
在第二方面的一种可能的实现方式中,所述第一指示信息为所述第一non-HT格式的帧的发送地址字段中的全局唯一/本地执行比特,或者为所述第一non-HT格式的帧的接收地址字段中的单播/广播比特,或者为所述第一non-HT格式的帧的帧控制Frame Control字段中的到达分布式系统ToDS字段、从分布式系统FromDS字段或重试Retry字段。
在第二方面的一种可能的实现方式中,所述第一指示信息为所述第一non-HT duplicated格式的帧的发送地址字段中的全局唯一/本地执行比特,或者为所述第一non-HT duplicated格式的帧的接收地址字段中的单播/广播比特,或者为所述第一non-HT duplicated格式的帧的Frame Control字段中的ToDS字段、FromDS字段或Retry字段。
在第二方面的一种可能的实现方式中,当所述第一non-HT格式的帧的扰码序列的前7个比特中的三个比特指示信道的带宽模式,或者所述第一non-HT duplicated格式的帧的扰码序列的前7个比特中的三个比特指示信道的带宽模式时,所述三个比特为所述扰码序列的前7个比特中的第二个比特、第三个比特和第四个比特,或者,所述三个比特为所述扰码序列的前7个比特中的第四个比特、第六个比特和第七个比特。
在第二方面的另一种可能的实现方式中,所述信道包括一个20MHz的主子信道和M个20MHz的从子信道,M大于或等于3,所述至少三个比特中的每个比特对应至少一个从子信道,从子信道对应的比特的取值用于指示所述从子信道是否可用。其中preamble puncture模式包括多种模式,由于该至少三个比特中每个比特对应至少一个从子信道,这样可以向第一设备指示出preamble puncture模式包括的多种模式。
在第二方面的另一种可能的实现方式中,当所述从子信道对应的比特的取值为1时,所述比特用于指示所述从子信道可用,当所述从子信道对应的比特的取值为0时,所述比特用于指示所述从子信道不可用;或者,当所述从子信道对应的比特的取值为0时,所述比特用于指示所述从子信道可用,当所述从子信道对应的比特的取值为1时,所述比特用于指示所述从子信道不可用。
第三方面,本申请实施例提供了一种信道指示方法,在所述方法中:第一设备接收第二设备发送的非高吞吐量non-HT格式的RTS-A帧或非高吞吐量复制non-HT duplicated格式的RTS-A帧,所述non-HT格式的高级的请求发送帧RTS-A帧的扰码序列的前7个比特中的至少三个比特中的每个比特对应信道中的至少一个从子信道,所述第一non-HT duplicated格式的RTS-A帧的扰码序列的前7个比特中的至少三个比特中的每个比特对应所述信道中的至少一个从子信道,所述信道为所述第一设备与所述第二设备之间的信道,从子信道对应的比特的取值用于指示所述从子信道是否可用;所述第一设备检测所述信道包括的每个子信道的状态信息;所述第一设备根据所述第一non-HT格式的RTS-A帧和所述信道包括的每个子信道的状态信息生成高级的清除发送帧CTS-A帧,或者根据所述第一non-HT duplicated格式的RTS-A帧和所述信道包括的每个子信道的状态信息生成CTS-A帧,所述CTS-A包括比特地图,当所述第一non-HT格式的RTS-A帧或所述第一non-HT duplicated格式的RTS-A帧指示某子信道可用且该子信道的信道状态为空闲,则在所述比特地图中所述某个子信道对应的比特设置为1,否则,在所述比特地图中所述某个子信道对应的比特设置为0;所述第一设备在所述比特地图中取值为1的比特对应的子信道上向所述第二设备发送所述non-HT或non-HT duplicated格式的CTS-A帧。通过RTS-A/CTS-A的交互,双方协商了用于数据通信的子信道,即主20MHz信道以及CTS-A帧的比特地图中设置为1的比特对应的子信道。
在第三方面中RTS-A帧的一种可能的实现方式中,RTS-A帧为使用扰码序列前7个比特中至少三个比特携带带宽信息的RTS帧。
在第三方面中RTS-A帧的另一种可能的实现方式中,RTS-A帧为一个新的帧类型或者一种新的触发帧,在RTS-A帧中携带一个比特地图,比特地图中的每个比特对应一个20MHz子信道。
在第三方面中CTS-A帧的一种可能的实现方式中,CTS-A帧为CTS帧。
在第三方面中CTS-A帧的另一种可能的实现方式中,CTS-A帧为携带BQR的A-Control字段的帧。
在第三方面中CTS-A帧的再一种可能的实现方式中,CTS-A帧为携带新的类型的A-Control字段的帧。
第四方面,本申请实施例提供了一种带宽模式指示装置,用于执行第一方面或第一方面的任意一种可能的实现方式中的方法。具体地,所述装置包括用于执行第一方面或第一方面的任意一种可能的实现方式中的方法的单元。
第五方面,本申请实施例提供了一种带宽模式指示装置,用于执行第二方面或第二方面的任意一种可能的实现方式中的方法。具体地,所述装置包括用于执行第二方面或第二方面的任意一种可能的实现方式中的方法的单元。
第六方面,本申请实施例提供了一种信道指示装置,用于执行第三方面或第三方面的任意一种可能的实现方式中的方法。具体地,所述装置包括用于执行第三方面或第三方面的任意一种可能的实现方式中的方法的单元。
第七方面,本申请实施例提供了一种带宽模式指示装置,所述装置包括输入接口、输出接口、处理器和存储器。其中,所述输入输出接口、所述处理器以及所述存储器之间可以通过总线系统相连。所述存储器用于存储程序、指令或代码,所述处理器用于执行所述存储器中的程序、指令或代码,完成第一方面、第二方面、第一方面的任意可能的实现方式或第二方面的任意可能的实现方式中的方法。
第八方面,本申请实施例提供了一种信道指示装置,所述装置包括输入接口、输出接口、处理器和存储器。其中,所述输入输出接口、所述处理器以及所述存储器之间可以通过总线系统相连。所述存储器用于存储程序、指令或代码,所述处理器用于执行所述存储器中的程序、指令或代码,完成第三方面或第三方面的任意可能的实现方式中的方法。
第九方面,本申请实施例提供了一种计算机程序产品,所述计算机程序产品包括在计算机可读存储介质中存储的计算机程序,并且所述计算程序通过处理器进行加载来实现上述第一方面、第二方面、第三方面、第一方面任意可能的实现方式、第二方面任意可能的实现方式或第三方面任意可能的实现方式的方法。
第十方面,本申请提实施例供了一种计算机可读存储介质,用于存储计算机程序,所述计算机程序通过处理器进行加载来执行第一方面、第二方面、第三方面、第一方面任意可能的实现方式、第二方面任意可能的实现方式或第三方面任意可能的实现方式的方法的指令。
第十一方面,本申请提实施例供了一种芯片,所述芯片包括可编程逻辑电路和/或程序指令,当所述芯片运行时用于实现上述第一方面、第二方面、第三方面、第一方面任意可能的实现方式、第二方面任意可能的实现方式或第三方面任意可能的实现方式的方法。
附图说明
图1-1是本申请实施例提供的一种通信系统结构示意图;
图1-2是本申请实施例提供的另一种通信系统结构示意图;
图2-1是本申请实施例提供的一种带宽模式指示方法流程图;
图2-2是本申请实施例提供的一种在信道上打孔的示意图;
图3-1是本申请实施例提供的另一种带宽模式指示方法流程图;
图3-2是本申请实施例提供的一种地址字段的结构示意图;
图3-3是本申请实施例提供的一种Frame Control字段的结构示意图;
图4是本申请实施例提供的一种信道指示方法流程图;
图5是本申请实施例提供的一种带宽模式指示装置结构示意图;
图6是本申请实施例提供的另一种带宽模式指示装置结构示意图;
图7是本申请实施例提供的一种信道指示装置结构示意图;
图8是本申请实施例提供的另一种带宽模式指示装置结构示意图;
图9是本申请实施例提供的另一种带宽模式指示装置结构示意图;
图10是本申请实施例提供的另一种信道指示装置结构示意图。
具体实施方式
下面将结合附图对本申请实施方式作进一步地详细描述。
参见图1-1,本申请实施例提供了一种通信系统,该通信系统包括:
第一设备1和第二设备2。第一设备1和第二设备2之间存在至少一个信道,该至少一个信道中的每个信道对应一个带宽模式。
例如,带宽模式可以包括20兆带宽模式、40兆带宽模式、80兆带宽模式、160(80+80)兆带宽模式、240兆带宽模式和320兆带宽模式等多种,其中,20兆带宽模式对应的信道的带宽为20MHz,40兆带宽模式对应的信道的带宽为40MHz,80兆带宽模式对应的信道的带宽为80MHz,160兆带宽模式对应的信道的带宽为160MHz,240兆带宽模式对应的信道的带 宽为240MHz,320兆带宽模式对应的信道的带宽为320MHz。
每个信道包括至少一个子信道,每个子信道的带宽可以相同,也可以不同,每个子信道的带宽可以大于或等于20MHz。对于每个信道,该信道包括的子信道中存在一个主子信道,而其他的子信道为从子信道。
可选的,参见图1-2,该系统可以为接入点(Access Point,AP)和至少一个站点组成的通信系统。第一设备1可以为AP,第二设备2可以为任一个站点;或者,第一设备1可以为任一个站点,第二设备2可以为AP;或者,第一设备1和第二设备2可以为两个不同站点。
参见图2-1,本申请实施例提供了一种带宽模式指示方法,该方法可以应用于如图1-1或图1-2所示的通信系统,包括:
步骤201:第二设备获取第一设备的设备类型。
第二设备在与第一设备关联时,第一设备向第二设备发送第一设备的设备类型,以及第二设备向第一设备发送第二设备的设备类型。所以在执行本步骤之前,第一设备和第二设备均保存对方的设备类型。
在本步骤中,第二设备可以获取第二设备中保存的第一设备的设备类型。
可选的,设备类型可以为极端高吞吐量(Extremely High Throughput,EHT)站点,或者,设备类型可以为不支持EHT的非常高吞吐量(Very High Throughput,VHT)站点或高效的(High efficiency,HE)站点。
其中,对于设备类型为EHT站点的第一设备,第一设备支持使用扰码序列的前7个比特中的至少三个比特指示信道的带宽模式,还可以支持使用扰码序列的前7个比特中的两个比特指示带宽模式。对于设备类型为不支持EHT的VHT站点或HE站点的第一设备,第一设备支持使用扰码序列的前7个比特中的两个比特指示带宽模式。
其中,第二设备的设备类型为EHT站点。
在本申请实施例,在标准中规定或者第二设备和第一设备可以事先约定当第一设备为EHT站点的设备时第二设备使用扰码序列的前7个比特中的至少三个比特指示带宽模式,以及当第一设备为不支持EHT的VHT站点或HE站点的设备时第二设备使用扰码序列的前7个比特中的两个比特指示带宽模式。
该信道为第二设备与第一设备之间的任一个信道。第二设备与第一设备之间可以有至少一个信道,该至少一个信道中的每个信道对应一个带宽模式。带宽模式除了包括20兆带宽模式、40兆带宽模式、80兆带宽模式和160兆带宽模式四种外,还可以包括240兆带宽模式和320兆带宽模式等新的带宽模式。
可选的,对于第二设备与第一设备中的任一个信道,该信道包括至少一个子信道,该至少一个子信道中存在一个子信道为主子信道,其他的子信道为从子信道。
步骤202a:当第一设备的设备类型为EHT站点时,第二设备生成第一非高吞吐量(non-High Throughput,non-HT)格式的帧或第一非高吞吐量复制(non-High Throughput duplicated,non-HT duplicated)格式的帧。
其中,第一non-HT格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式,第一non-HT duplicated格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式,该信道为第一设备与第二设备之间的一个信道。
当该信道包括一个子信道时,第二设备生成第一non-HT格式的帧;当该信道包括多个子信道时,第二设备生成第一non-HT duplicated格式的帧。
例如,目前出现的带宽模式除了包括20兆带宽模式、40兆带宽模式、80兆带宽模式和160(80+80)兆带宽模式四种外,还包括240兆带宽模式、320兆带宽模式等新的带宽模式。在本步骤中,由于使用第一non-HT格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式,或者,使用第一non-HT duplicated格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式,因此该至少三个比特可以指示的带宽模式的种类超出四种。也就是说,该至少三个比特可以指示的带宽模式除了可以包括20兆带宽模式、40兆带宽模式、80兆带宽模式和160(80+80)兆带宽模式四种外,还包括240兆带宽模式和/或320兆带宽模式等新的带宽模式。
在本实施例中可以使用扰码序列的前7个比特中的三个比特指示信道的带宽模式。扰码序列的前7个比特为B0B1B2B3B4B5B6,该扰码序列的前7个比特包括第一个比特B0、第二个比特B1、第三个比特B2、第四个比特B3、第五个比特B4、第六个比特B5和第七个比特B6。对于20兆带宽模式、40兆带宽模式、80兆带宽模式、160(80+80)兆带宽模式、240兆带宽模式和320兆带宽模式等带宽模式中任一种带宽模式,参见表1,可以使用扰码序列的前7个比特中的第二个比特B1、第三个比特B2和第四个比特B3指示该任一种带宽模式。或者,参见表2,可以使用扰码序列的前7个比特中的第四个比特B3、第六个比特B5和第七个比特B6指示该任一种带宽模式。
表1
Figure PCTCN2019091953-appb-000001
表2
Figure PCTCN2019091953-appb-000002
可选的,对于第一设备与第二设备之间的带宽大于或等于80MHz的信道,该信道包括一个主子信道和M个从子信道,M大于或等于3,主子信道的带宽可以大于或等于20MHz,每个从子信道的带宽可以大于或等于20MHz。该信道的带宽模式还可以为前导打孔(preamble puncture)模式,在preamble puncture模式中该信道中的至少一个从子信道不可用。
其中,第二设备在与第一设备进行数据通信前,第二设备可以在该信道内进行打孔,被打孔掉的子信道为从子信道,被打孔掉的从子信道不可用,即不可用于进行数据通信,未被打孔掉的子信道可用,即可用于进行数据通信。
参见图2-2,preamble puncture模式又可以分为如下第一模式、第二模式、第三模式和第四模式:
第一模式是在80MHz信道内进行打孔,只有次20MHz信道(S20信道)被打掉;
第二模式是在80MHz信道内进行打孔,只有次40MHz信道中的一个20MHz信道(S40-low或者S40-High)被打掉;
第三模式是在160MHz或80+80MHz信道内进行打孔,在主80MHz信道内只有从20MHz信道(S20信道)被打掉,从80MHz信道内可以以20MHz为粒度进行任意打孔;
第四模式是在160MHz或80+80MHz信道内进行打孔,在主80MHz信道内主40MHz信道是可用的,从40MHz和从80MHz信道内可以以20MHz为粒度进行任意打孔。
可选的,在本步骤中,可以使用扰码序列的前7个比特中的至少三个比特指示该信道的preamble puncture模式,在实现时,该至少三个比特中的每个比特对应至少一个从子信道,从子信道对应的比特的取值用于指示该从子信道是否可用。
可选的,当该从子信道对应的比特的取值为1时,该比特用于指示该从子信道可用,当该从子信道对应的比特的取值为0时,该比特用于指示该从子信道不可用;或者,
当该从子信道对应的比特的取值为0时,该比特用于指示该从子信道可用,当该从子信道对应的比特的取值为1时,该比特用于指示该从子信道不可用。
当使用扰码序列前7比特指示的带宽不超过160MHz的情况下,使用7个比特来指示,其中每一个比特对应除主20MHz子信道之外的一个20MHz子信道,从B0到B7分别对应的20MHz子信道是从低频率低到高频率来排列的。
例如,参见图2-2,假设第二设备打掉从子信道S20,从子信道S20不可用,主信道P20、从子信道S40-Low和S40-High均可用,使用扰码序列的前7个比特中的B0=0、B1=1、B2=1、B3=0、B4=0、B5=0、B6=0来指示该信道的preamble puncture模式。其中第一个比特B0对应从子信道S20、第二个比特B1对应从子信道S40-Low、第三个比特B2对应从子信道S40-High,B3-B6分别对应从80MHz中的四个20MHz信道。
当使用扰码序列前7比特指示的带宽超过160MHz的情况下,其中每一个比特对应除主20MHz子信道之外的一个或多个20MHz子信道。例如当总带宽为320MHz的时候,可以使用5个比特来指示,其中一个比特指示从20MHz子信道,一个比特指示从40MHz子信道,另外三个比特分别指示不含主20MHz子信道的三个80MHz子信道。
non-HT格式的帧non-HT格式的帧non-HT duplicated格式的帧non-HT duplicated格式的帧。
步骤203a:第二设备向第一设备发送第一non-HT格式的帧或第一non-HT duplicated格式的帧,结束。
第一设备接收第一non-HT格式的帧或第一non-HT duplicated格式的帧,获取第一non-HT格式的帧的扰码序列的前7个比特中的该至少三个比特,确定该至少三个比特指示的信道的带宽模式;或者,第一设备获取第一non-HT duplicated格式的帧的扰码序列的前7个比特中的该至少三个比特确定该至少三个比特指示的信道的带宽模式。
步骤202b:当第一设备的设备类型为不支持EHT的VHT站点或HE站点时,第二设备生成第二non-HT格式的帧或第二non-HT duplicated格式的帧。
其中,第二non-HT格式的帧的扰码序列的前7个比特中的两个比特指示信道的带宽模式,第二non-HT duplicated格式的帧的扰码序列的前7个比特中的两个比特指示信道的带宽模式,该信道为第一设备与第二设备之间的一个信道。
可选的,该两个比特指示的带宽模式可以为20兆带宽模式、40兆带宽模式、80兆带宽模式和160(80+80)兆带宽模式中的任一种。
其中,扰码序列的前7个比特为B0B1B2B3B4B5B6,该扰码序列的前7个比特包括第一个比特B0、第二个比特B1、第三个比特B2、第四个比特B3、第五个比特B4、第六个比特B5和第七个比特B6。参见表3,在本步骤中,使用第六个比特B5和第七个比特B6指示20兆带宽模式、40兆带宽模式、80兆带宽模式和160(80+80)兆带宽模式中的任一种。
表3
B5 B6 带宽模式
0 0 20兆带宽模式
0 1 40兆带宽模式
1 0 80兆带宽模式
1 1 160(80+80)兆带宽模式
步骤203b:第二设备向第一设备发送第二non-HT格式的帧或第二non-HT duplicated格式的帧。
第一设备接收第二non-HT格式的帧或第二non-HT duplicated格式的帧,获取第二non-HT格式的帧的扰码序列的前7个比特中的该两个比特,确定该两个比特指示的信道的带宽模式;或者,第一设备获取第二non-HT duplicated格式的帧的扰码序列的前7个比特中的该两个比特,确定该两个比特指示的信道的带宽模式。
可选的,第一non-HT格式的帧、第一non-HT duplicated格式的帧、第二non-HT格式的帧、第二non-HT duplicated格式的帧可以均为请求发送(Request To Send,RTS)帧。
在本申请实施例中,步骤202a-203a与步骤202b-203b是两个并列且相互独立的过程。
在本申请实施例中,在第二设备的设备类型为EHT站点时,第二设备生成的第一non-HT格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式,或者,第二设备生成的第一non-HT duplicated格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式。由于至少三个比特可以指示超出四种带宽模式,因此通过该至少三个比特可以向第一设备指示的带宽模式,不仅包括20兆带宽模式、40兆带宽模式、80兆带宽模式和160(80+80)兆带宽模式四种外,还包括240兆带宽模式和/或320兆带宽模式等新的带宽模式。
参见图3-1,本申请实施例提供了一种带宽模式指示方法,该方法可以应用于如图1-1或 图1-2所示的通信系统,包括:
步骤301:第二设备生成第一non-HT格式的帧或第一non-HT duplicated格式的帧。
其中,第一non-HT格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式以及第一non-HT格式的帧包含第一指示信息,第一指示信息用于指示是否使用第一non-HT格式的帧的扰码序列的前7个比特中的至少三个比特指示该带宽模式,第一non-HT duplicated格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式以及第一non-HT duplicated格式的帧包含第一指示信息,该信道为第一设备与第二设备之间的一个信道,第一指示信息用于指示是否使用第一non-HT duplicated格式的帧的扰码序列的前7个比特中的至少三个比特指示该带宽模式。
对于non-HT duplicated格式的帧或non-HT格式的帧,当该信道包括一个子信道时,第二设备生成第一non-HT格式的帧;当该信道包括多个子信道时,第二设备生成第一non-HT duplicated格式的帧。
当第二设备需要与第一设备进行数据通信时,第二设备执行本实施例的方法以将信道的带宽模式指示给第一设备,第二设备为EHT站点,第一设备可能为EHT站点,或者,第一设备可能为不支持EHT的VHT站点或HE站点。
在本实施例中,第二设备生成的第一non-HT格式的帧包含第一指示信息,或者生成的第一non-HT duplicated格式的帧包含第一指示信息,且通过该第一指示信息告知第一设备是否使用扰码序列的前7个比特中的至少三个比特指示该带宽模式。
可选的,第一指示信息可以为第一non-HT格式的帧的发送地址字段中的全局唯一/本地执行比特,或者为第一non-HT格式的帧的接收地址字段中的单播/广播比特,或者为第一non-HT格式的帧的帧控制(Frame Control)字段中的到达分布式系统(To Distribution System,ToDS)字段、从分布式系统(FromDS)字段或重试(Retry)字段。
参见图3-2所示的第一non-HT格式的帧的发送地址字段或接收地址字段,该发送地址字段或接收地址字段包括6个字节。其中第一个字节包括比特b0、b1、b2、b3、b4、b5、b6和b7。
当图3-2所示的为发送地址字段时,该发送地址字段的第一个字节的b1比特为全局唯一/本地执行比特,即第一指示信息为b1比特,例如b1=1表示使用了扰码序列的前7个比特中的至少三个比特指示带宽模式。当图3-2所示的为接收地址字段时,该接收地址字段的第一个字节的b0比特为单播/广播比特,即第一指示信息为b0比特,例如b0=1表示使用了扰码序列的前7个比特中的至少三个比特指示带宽模式。
参见图3-3所示的第一non-HT格式的帧的Frame Control字段,Frame Control字段包括协议版本(Protocol Version)字段、类型(Type)字段、子类型(Subtype)字段、To DS字段、From DS字段、更多段位(More Fragments)字段、Retry字段、电量管理(Power Management)字段、更多数据(More Data)字段、保护帧(Protected Frame)字段和命令(+HTC/Order)字段。其中,ToDS、FromDS和Retry字段在目前的Wi-Fi标准(802.11ax或更早的标准)中始终设置为0,因此在本专利中可以复用ToDS字段、FromDS字段或Retry字段,例如To DS=1、From DS=1或Retry=1表示使用了扰码序列的前7个比特中的至少三个比特指示带宽模式;To DS=0、From DS=0或Retry=0表示没有使用扰码序列的前7个比特中的至少三个比特指示带宽模式。
可选的,第一指示信息可以为第一non-HT duplicated格式的帧的发送地址字段中的全局唯一/本地执行比特,或者为第一non-HT duplicated格式的帧的接收地址字段中的单播/广播比特,或者为第一non-HT duplicated格式的帧的Frame Control字段中的ToDS字段、FromDS字段或Retry字段。
其中,第一non-HT duplicated格式的帧的发送地址字段、接收地址字段和Frame Control字段,可以参照上述对第一non-HT格式的帧的发送地址字段、接收地址字段和Frame Control字段的描述,在此不再详细说明。
可选的,第二设备与第一设备之间可以有至少一个信道,该至少一个信道中的每个信道对应一个带宽模式。带宽模式除了包括20兆带宽模式、40兆带宽模式、80兆带宽模式和160兆带宽模式四种外,还可以包括240兆带宽模式和320兆带宽模式等新的带宽模式。
在本步骤中,由于使用第一non-HT格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式,或者,使用第一non-HT duplicated格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式,因此该至少三个比特可以指示的带宽模式的种类超出四种。也就是说,该至少三个比特可以指示的带宽模式除了可以包括20兆带宽模式、40兆带宽模式、80兆带宽模式和160(80+80)兆带宽模式四种外,还包括240兆带宽模式和/或320兆带宽模式等新的带宽模式。
其中,在本实施例中可以使用扰码序列的前7个比特中的三个比特指示信道的带宽模式。例如,扰码序列的前7个比特为B0B1B2B3B4B5B6,该扰码序列的前7个比特包括第一个比特B0、第二个比特B1、第三个比特B2、第四个比特B3、第五个比特B4、第六个比特B5和第七个比特B6。对于20兆带宽模式、40兆带宽模式、80兆带宽模式、160(80+80)兆带宽模式、240兆带宽模式和320兆带宽模式等带宽模式中任一种带宽模式,可以使用扰码序列的前7个比特中的第二个比特B1、第三个比特B2和第四个比特B3指示该任一种带宽模式。或者,可以使用扰码序列的前7个比特中的第四个比特B3、第六个比特B5和第七个比特B6指示该任一种带宽模式。
可选的,对于第一设备与第二设备之间的带宽大于80兆的信道,该信道包括一个主子信道和M个从子信道,M大于或等于3,主子信道的带宽可以大于或等于20MHz,每个从子信道的带宽可以大于或等于20MHz。该信道的带宽模式还可以为preamble puncture模式,在preamble puncture模式中该信道中的至少一个从子信道不可用。
其中,第二设备在与第一设备进行数据通信前,第二设备可以在该信道内进行打孔,被打孔掉的子信道为从子信道,被打孔掉的从子信道不可用,即不可用于进行数据通信,未被打孔掉的子信道可用,即可用于进行数据通信。
参见图2-2,preamble puncture模式又可以分为如下第一模式、第二模式、第三模式和第四模式:
第一模式是在80MHz信道内进行打孔,只有次20MHz信道(S20信道)被打掉;
第二模式是在80MHz信道内进行打孔,只有次40MHz信道中的一个20MHz信道(S40-low或者S40-High)被打掉;
第三模式是在160MHz或80+80MHz信道内进行打孔,在主80MHz信道内只有从20MHz信道(S20信道)被打掉,从80MHz信道内可以以20MHz为粒度进行任意打孔;
第四模式是在160MHz或80+80MHz信道内进行打孔,在主80MHz信道内主40MHz信 道是可用的,从40MHz和从80MHz信道内可以以20MHz为粒度进行任意打孔。
可选的,在本步骤中,可以使用扰码序列的前7个比特中的至少三个比特指示该信道的preamble puncture模式,在实现时,该至少三个比特中的每个比特对应至少一个从子信道,从子信道对应的比特的取值用于指示该从子信道是否可用。
可选的,当该从子信道对应的比特的取值为1时,该比特用于指示该从子信道可用,当该从子信道对应的比特的取值为0时,该比特用于指示该从子信道不可用;或者,
当该从子信道对应的比特的取值为0时,该比特用于指示该从子信道可用,当该从子信道对应的比特的取值为1时,该比特用于指示该从子信道不可用。
当使用扰码序列前7比特指示的带宽不超过160MHz的情况下,使用7个比特来指示,其中每一个比特对应除主20MHz子信道之外的一个20MHz子信道,从B0到B7分别对应的20MHz子信道是从低频率低到高频率来排列的。
例如,参见图2-2,假设第二设备打掉从子信道S20,从子信道S20不可用,主信道P20、从子信道S40-Low和S40-High均可用,使用扰码序列的前7个比特中的B0=0、B1=1、B2=1、B3=0、B4=0、B5=0、B6=0来指示该信道的preamble puncture模式。其中第一个比特B0对应从子信道S20、第二个比特B1对应从子信道S40-Low、第三个比特B2对应从子信道S40-High,B3-B6分别对应从80MHz中的四个20MHz信道。
当使用扰码序列前7比特指示的带宽超过160MHz的情况下,其中每一个比特对应除主20MHz子信道之外的一个或多个20MHz子信道。例如当总带宽为320MHz的时候,可以使用5个比特来指示,其中一个比特指示从20MHz子信道,一个比特指示从40MHz子信道,另外三个比特分别指示不含主20MHz子信道的三个80MHz子信道。
步骤302:第二设备向第一设备发送第一non-HT格式的帧或第一non-HT duplicated格式的帧。
第一设备接收第一non-HT格式的帧或第一non-HT duplicated格式的帧,获取第一non-HT格式的帧包含的第一指示信息,根据第一指示信息确定第一non-HT格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式,则从第一non-HT格式的帧的扰码序列的前7个比特中获取该至少三个比特,确定该至少三个比特指示的信道的带宽模式;或者,第一设备获取第一non-HT duplicated格式的帧包含的第一指示信息,根据第一指示信息确定第一non-HT duplicated格式的帧中的至少三个比特指示信道的带宽模式,则从第一non-HT duplicated格式的帧的扰码序列的前7个比特中获取该至少三个比特,确定该至少三个比特指示的信道的带宽模式。
可选的,第一non-HT格式的帧、第一non-HT duplicated格式的帧、non-HT格式的帧non-HT duplicated格式的帧可以均为RTS帧。
在本申请实施例中,第二设备生成的第一non-HT格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式以及第一non-HT格式的帧包含第一指示信息,或者,第二设备生成的第一non-HT duplicated格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式以及第一non-HT duplicated格式的帧包含第一指示信息。这样第一设备可以根据第一指示信息确定扰码序列的前7个比特中的至少三个比特指示带宽模式,由于至少三个比特可以指示超出四种带宽模式,因此通过该至少三个比特可以向第一设备指示的带宽模式,不仅包括20兆带宽模式、40兆带宽模式、80兆带宽模式和160(80+80)兆带宽模 式四种外,还包括240兆带宽模式和/或320兆带宽模式等新的带宽模式。
参见图4,本申请实施例提供了一种信道指示方法,该方法可以应用于如图1-1或图1-2所示的通信系统,包括:
步骤401:第一设备接收第二设备发送的第一non-HT格式的高级的请求发送(Request to send Advanced,RTS-A)帧或第一non-HT duplicated格式的RTS-A帧。
所述non-HT格式的RTS-A帧的扰码序列的前7个比特中的至少三个比特中的每个比特对应信道中的至少一个从子信道,所述第一non-HT duplicated格式的RTS-A帧的扰码序列的前7个比特中的至少三个比特中的每个比特对应所述信道中的至少一个从子信道,所述信道为所述第一设备与所述第二设备之间的信道,从子信道对应的比特的取值为0代表对应的子信道不可用,取值为1代表对应的子信道可用。
可选的,RTS-A帧为使用扰码序列前7比特中至少三个比特携带带宽信息的RTS帧。例如,使用扰码序列前7个比特中的每一个比特分别对应160(80+80)MHz中除了主20MHz子信道之外的一个20MHz的从子信道。某比特设置为0代表对应的20MHz的从子信道不可用,设置为1代表对应的20MHz的从子信道可用。由于扰码序列前7个比特不能全部取0,因此这里也不允许全部7个比特都设置为0,即当RTS-A帧只使用主20MHz子信道发送的时候不可以采用本方案。特别需要强调的是,当RTS-A帧在使用不超过80MHz带宽进行发送时,依然是采用7个比特来进行指示,在这种情况下与从80MHz信道对应的4个比特设置为0。
可选的,RTS-A帧为一个新的帧类型或者一种新的触发帧,在RTS-A帧中携带一个比特地图,比特地图中的每个比特对应一个20MHz子信道。由于该实现方式中是引入了一个新的类型的帧,比特地图的大小可以随意扩展。因此可以扩展到160MHz以上的带宽。例如当最大通信带宽为320MHz的时候,可以采用16个比特的比特地图,其中每一个比特对应一个20MHz的子信道。由于主20MHz子信道必须使用,所以可选地,其中与主20MHz子信道对应的比特可以设置为预留比特。
可选的,RTS-A帧为CTS-to-self帧。CTS-to-self帧以non-HT duplicate的格式在包含主20MHz子信道在内的所有可用的20MHz子信道上进行复制。需要注意的一点是,对于该实施方式,第一设备在接收到CTS-to-self帧之后将不进行任何形式的回复,即在该实施方式中不存在下面将要介绍到的高级的清除发送帧(Clear to send Advanced,CTS-A)帧。
步骤402:第一设备检测该信道包括的每个子信道的状态信息。
可选的,第一设备可以检测其与第二设备之间的每个子信道的状态信息,子信道的状态信息可以为空闲或忙碌。
步骤403:第一设备根据第一non-HT格式的RTS-A帧和该信道包括的每个子信道的状态信息生成CTS-A帧,或者根据第一non-HT duplicated格式的RTS-A帧和该信道包括的每个子信道的状态信息生成CTS-A帧,该CTS-A帧中携带比特地图,比特地图中的每个比特用于指示对应的子信道是否可用。
可选的,CTS-A帧为允许发送(Clear To Send,CTS)帧。CTS帧通过non-HT或者non-HT duplicated的格式进行发送。当采用non-HT duplicated的格式进行发送的时候只在可用的20MHz子信道上进行重复;
可选的,CTS-A帧为携带带宽询问报告(Bandwidth Query report,BQR)的A-Control 字段的帧。BQR中带有一个8比特的比特地图,每个比特对应一个20MHz的子信道。本实施方式中的BQR的使用方式与其在11ax标准中的使用方式有两点不同:1)在11ax标准中,BQR是BQRP的响应帧,而在本实施方式中BQR是RTS-A帧的响应帧。也就是说BQR将对两种类型的帧都进行响应。2)在11ax标准中,发送BQR的时候只要BQR的比特地图中对应承载BQR的一个或多个20MHz信道空闲就可以进行回复,根据信道检测结果主20MHz的状态为繁忙时,主20MHz信道对应的比特设置为0。而在本实施方式中,必须保证主20MHz信道为空闲的情况下才可以回复BQR。
可选的,CTS-A帧为携带新类型的A-Control字段的帧。新类型的A-Control字段中带有一个比特地图,每个比特对应一个20MHz的子信道。由于该实现方式中是引入了一个新类型的A-Control字段,比特地图的大小可以随意扩展。因此可以扩展到160MHz以上的带宽。例如当最大通信带宽为320MHz的时候,可以采用16个比特的比特地图,其中每一个比特对应一个20MHz的信道。由于主20MHz信道必须使用,所以可选地,其中与主20MHz信道对应的比特可以设置为预留比特或者使用15个比特的比特地图。
可选的,CTS-A帧为一种新类型的帧。新类型的帧中带有一个比特地图,每个比特对应一个20MHz的子信道。由于该实现方式中是引入了一个新类型的帧,比特地图的大小可以随意扩展。因此可以扩展到160MHz以上的带宽。例如当最大通信带宽为320MHz的时候,可以采用16个比特的比特地图,其中每一个比特对应一个20MHz的子信道。由于主20MHz子信道必须使用,所以可选地,其中与主20MHz子信道对应的比特可以设置为预留比特或者使用15个比特的比特地图。
步骤404:第一设备在比特地图中取值为1的比特对应的子信道上向第二设备发送该CTS-A帧。
在本申请实施例中,第一设备生成CTS-A帧,该CTS-A帧的比特地图用于指示该信道中的用于数据通信子信道和不用于数据通信的子信道,向第二设备发送该CTS-A帧,双方协商了用于数据通信的子信道,实现带宽协商。
参见图5,本申请实施例提供了一种带宽模式指示装置500,所述装置500可以为上述图1-1或图2-1所示实施例中的第二设备或第二设备中的部分,包括:处理单元501和发送单元502;
处理单元501,用于当第一设备为极端高吞吐量EHT站点时,生成第一non-HT格式的帧或第一non-HT duplicated格式的帧,第一non-HT格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式,第一non-HT duplicated格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式,该信道为第一设备与所述装置500之间的信道;处理单元501,还用于当第一设备为不支持EHT的VHT站点或HE站点时,生成第二non-HT格式的帧或第二non-HT duplicated格式的帧,第二non-HT格式的帧的扰码序列的前7个比特中的两个比特指示所述信道的带宽模式,第二non-HT duplicated格式的帧的扰码序列的前7个比特中的两个比特指示所述信道的带宽模式,该信道为第一设备与所述装置500之间的信道;
发送单元502,用于向第一设备发送第一non-HT格式的帧或第一non-HT duplicated格式的帧;
以及,发送单元502,还用于向第一设备发送第二non-HT格式的帧或第二non-HT duplicated格式的帧。
可选的,当第一non-HT格式的帧的扰码序列的前7个比特中的三个比特指示信道的带宽模式,或者第一non-HT duplicated格式的帧的扰码序列的前7个比特中的三个比特指示信道的带宽模式时,该三个比特为扰码序列的前7个比特中的第二个比特、第三个比特和第四个比特,或者,该三个比特为扰码序列的前7个比特中的第四个比特、第六个比特和第七个比特。
可选的,该信道包括一个20MHz的主子信道和M个20MHz的从子信道,M大于或等于3,该至少三个比特中的每个比特对应至少一个从子信道,从子信道对应的比特的取值用于指示该从子信道是否可用。
可选的,当该从子信道对应的比特的取值为1时,该比特用于指示该从子信道可用,当该从子信道对应的比特的取值为0时,该比特用于指示该从子信道不可用;或者,
当该从子信道对应的比特的取值为0时,该比特用于指示该从子信道可用,当该从子信道对应的比特的取值为1时,该比特用于指示该从子信道不可用。
在本申请实施例中,在第二设备的设备类型为EHT站点时,处理单元生成的第一non-HT格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式,或者,第二设备生成的第一non-HT duplicated格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式。由于至少三个比特可以指示超出四种带宽模式,因此通过该至少三个比特可以向第一设备指示的带宽模式,不仅包括20兆带宽模式、40兆带宽模式、80兆带宽模式和160(80+80)兆带宽模式四种外,还包括240兆带宽模式和/或320兆带宽模式等新的带宽模式。
参见图6,本申请实施例提供了一种带宽模式指示装置600,所述装置600可以为上述图1-1或图3-1所示实施例中的第二设备或第二设备中的部分,包括:
处理单元601,用于生成第一non-HT格式的帧或第一non-HT duplicated格式的帧,第一non-HT格式的帧包括第一指示信息,第一指示信息是否用于指示是否使用扰码序列的前7个比特中的至少三个比特指示所述带宽模式,第一non-HT duplicated格式的帧包含第一指示信息,该信道为第一设备与所述装置600之间的信道,第一指示信息是否用于指示是否使用扰码序列的前7个比特中的至少三个比特指示所述带宽模式;
发送单元602,用于向第一设备发送第一non-HT格式的帧或第一non-HT duplicated格式的帧。
可选的,第一non-HT格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式。第一non-HT duplicated格式的帧的扰码序列的前7个比特中的至少三个比特指示该信道的带宽模式。
可选的,所述第一指示信息为第一non-HT格式的帧的发送地址字段中的全局唯一/本地执行比特,或者为所述第一non-HT格式的帧的接收地址字段中的单播/广播比特,或者为所述第一non-HT格式的帧的帧控制Frame Control字段中的到达分布式系统ToDS字段、从分布式系统FromDS字段或重试Retry字段。
可选的,所述第一指示信息为所述第一non-HT duplicated格式的帧的发送地址字段中的全局唯一/本地执行比特,或者为所述第一non-HT duplicated格式的帧的接收地址字段中的单 播/广播比特,或者为所述第一non-HT duplicated格式的帧的Frame Control字段中的ToDS字段、FromDS字段或Retry字段。
可选的,当所述第一non-HT格式的帧的扰码序列的前7个比特中的三个比特指示信道的带宽模式,或者所述第一non-HT duplicated格式的帧的扰码序列的前7个比特中的三个比特指示信道的带宽模式时,所述三个比特为所述扰码序列的前7个比特中的第二个比特、第三个比特和第四个比特,或者,所述三个比特为所述扰码序列的前7个比特中的第四个比特、第六个比特和第七个比特。
可选的,所述信道包括一个20MHz的主子信道和M个20MHz的从子信道,M大于或等于3,所述至少三个比特中的每个比特对应至少一个从子信道,从子信道对应的比特的取值用于指示所述从子信道是否可用。
可选的,当所述从子信道对应的比特的取值为1时,所述比特用于指示所述从子信道可用,当所述从子信道对应的比特的取值为0时,所述比特用于指示所述从子信道不可用;或者,当所述从子信道对应的比特的取值为0时,所述比特用于指示所述从子信道可用,当所述从子信道对应的比特的取值为1时,所述比特用于指示所述从子信道不可用。
在本申请实施例中,处理单元生成的第一non-HT格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式以及第一non-HT格式的帧携带第一指示信息,或者,第二设备生成的第一non-HT duplicated格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式以及第一non-HT duplicated格式的帧携带第一指示信息。这样第一设备可以根据第一指示信息确定扰码序列的前7个比特中的至少三个比特指示带宽模式,由于至少三个比特可以指示超出四种带宽模式,因此通过该至少三个比特可以向第一设备指示的带宽模式,不仅包括20兆带宽模式、40兆带宽模式、80兆带宽模式和160(80+80)兆带宽模式四种外,还包括240兆带宽模式和/或320兆带宽模式等新的带宽模式。
参见图7,本申请实施例提供了一种信道指示装置700,所述装置700可以为上述图1-1或图4所示实施例中的第一设备或第一设备中的部分,包括:
接收单元701,用于接收第二设备发送的第一non-HT格式的RTS-A帧或第一non-HT duplicated格式的RTS-A帧,第一non-HT格式的RTS-A帧的扰码序列的前7个比特中的至少三个比特中的每个比特对应信道中的至少一个从子信道,第一non-HT duplicated格式的RTS-A帧的扰码序列的前7个比特中的至少三个比特中的每个比特对应该信道中的至少一个从子信道,该信道为所述装置700与第二设备之间的信道,从子信道对应的比特的取值用于指示从子信道是否可用;
处理单元702,用于检测该信道包括的每个子信道的状态信息;根据第一non-HT格式的RTS-A帧和该信道包括的每个子信道的状态信息生成CTS-A帧,或者根据CTS-A第一non-HT duplicated格式的帧和该信道包括的每个子信道的状态信息生成CTS-A帧,CTS-A帧包括比特地图,当第一non-HT格式的帧或第一non-HT duplicated格式的帧指示某子信道可用且该子信道的信道状态为空闲,则在比特地图中某个子信道对应的比特设置为1,否则,在比特地图中某个子信道对应的比特设置为0;
发送单元703,用于在比特地图中取值为1的比特对应的子信道上向第二设备发送CTS-A帧。
可选的,RTS-A帧为使用扰码序列前7比特中至少三个比特携带带宽信息的RTS帧。
可选的,RTS-A帧为一个新的帧类型或者一种新的触发帧,在RTS-A帧中携带一个比特地图,比特地图中的每个比特对应一个20MHz信道。
可选的,CTS-A帧为CTS帧。
可选的,CTS-A帧为携带BQR的A-Control字段的帧。
可选的,CTS-A帧为携带新的类型的A-Control字段的帧。
在本申请实施例中,第一设备生成CTS-A帧,该CTS-A帧的比特地图用于指示该信道中的用于数据通信子信道和不用于数据通信的子信道,向第二设备发送该CTS-A帧,双方协商了用于数据通信的子信道,实现带宽协商。
图8是本申请实施例提供的带宽模式指示装置800的另一示意图。该装置800可以是专用集成电路、一个或多个FPGA(现场可编程门阵列)、PLD(可编程逻辑器件)、控制器、状态机、门逻辑、分立硬件部件、任何其它适合的电路、或者能够执行本申请通篇所描述的各种功能的电路的任意组合、芯片、单板、或者通信设备等。所述装置800被配置到图2-1所述的实施例中的第二设备中或图5所述实施例中的装置中,可以用于执行图2-1所述方法中的第二设备执行的操作。如图8所示,该装置800包括:输入输出接口801、处理器802和存储器803。该输入输出接口801、处理器802和存储器803可以通过总线系统804相连。
所述存储器803用于存储包括程序、指令或代码。所述处理器802,用于执行所述存储器803中的程序、指令或代码,以控制输入输出接口801接收或发送信号以及实施上述图2-1所对应的实施方式中的第二设备所实施的各步骤及功能,此处不再赘述。上述输入输出接口801和处理器802的具体实施方式可以相应参考上述图5中发送单元502,处理单元501的具体说明,这里不再赘述。
图9是本申请实施例提供的带宽模式指示装置900的另一示意图。该装置900可以是专用集成电路、一个或多个FPGA(现场可编程门阵列)、PLD(可编程逻辑器件)、控制器、状态机、门逻辑、分立硬件部件、任何其它适合的电路、或者能够执行本申请通篇所描述的各种功能的电路的任意组合、芯片、单板、或者通信设备等。所述装置900被配置到图3-1所述的实施例中的第二设备中或图6所述实施例中的装置中,可以用于执行图3-1所述方法中的第二设备执行的操作。如图9所示,该装置900包括:输入输出接口901、处理器902和存储器903。该输入输出接口901、处理器902和存储器903可以通过总线系统904相连。
所述存储器903用于存储包括程序、指令或代码。所述处理器902,用于执行所述存储器903中的程序、指令或代码,以控制输入输出接口901接收或发送信号以及实施上述3-1所对应的实施方式中的第二设备所实施的各步骤及功能,此处不再赘述。上述输入输出接口901和处理器902的具体实施方式可以相应参考上述图6中发送单元602,处理单元601的具体说明,这里不再赘述。
图10是本申请实施例提供的带宽模式指示装置1000的另一示意图。该装置1000可以是专用集成电路、一个或多个FPGA(现场可编程门阵列)、PLD(可编程逻辑器件)、控制器、状态机、门逻辑、分立硬件部件、任何其它适合的电路、或者能够执行本申请通篇所描述的 各种功能的电路的任意组合、芯片、单板、或者通信设备等。所述装置1000被配置到图4所述的实施例中的第一设备中或图7所述实施例中的装置中,可以用于执行图4所述方法中的第一设备执行的操作。如图10所示,该装置1000包括:输入输出接口1001、处理器1002和存储器1003。该输入输出接口1001、处理器1002和存储器1003可以通过总线系统1004相连。
所述存储器1003用于存储包括程序、指令或代码。所述处理器1002,用于执行所述存储器1003中的程序、指令或代码,以控制输入输出接口1001接收或发送信号以及实施上述4所对应的实施方式中的第一设备所实施的各步骤及功能,此处不再赘述。上述输入输出接口1001的具体实施方式可以相应参考上述图7中接收单元701和发送单元703的具体说明,上述处理器1002的具体实施方式可以相应参考上述图7中处理单元702的具体说明,这里不再赘述。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成,也可以通过程序来指令相关的硬件完成,所述的程序可以存储于一种计算机可读存储介质中,上述提到的存储介质可以是只读存储器,磁盘或光盘等。
以上所述仅为本申请的可选实施例,并不用以限制本申请,凡在本申请的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本申请的保护范围之内。

Claims (26)

  1. 一种带宽模式指示方法,其特征在于,所述方法包括:
    当第一设备为极端高吞吐量EHT站点时,第二设备生成第一非高吞吐量non-HT格式的帧或第一非高吞吐量复制non-HT duplicated格式的帧,所述第一non-HT格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式,所述第一non-HT duplicated格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式,所述信道为所述第一设备与第二设备之间的信道;
    向所述第一设备发送所述第一non-HT格式的帧或所述第一non-HT duplicated格式的帧;
    当第一设备为不支持EHT的非常高吞吐量VHT站点或高效HE站点时,第二设备生成第二non-HT格式的帧或第二non-HT duplicated格式的帧,所述第二non-HT格式的帧的扰码序列的前7个比特中的两个比特指示所述信道的带宽模式,所述第二non-HT duplicated格式的帧的扰码序列的前7个比特中的两个比特指示所述信道的带宽模式,所述信道为所述第一设备与第二设备之间的信道;
    向所述第一设备发送所述第二non-HT格式的帧或所述第二non-HT duplicated格式的帧。
  2. 如权利要求1所述的方法,其特征在于,当所述第一non-HT格式的帧的扰码序列的前7个比特中的三个比特指示信道的带宽模式,或者所述第一non-HT duplicated格式的帧的扰码序列的前7个比特中的三个比特指示信道的带宽模式时,所述三个比特为所述扰码序列的前7个比特中的第二个比特、第三个比特和第四个比特,或者,所述三个比特为所述扰码序列的前7个比特中的第四个比特、第六个比特和第七个比特。
  3. 如权利要求1所述的方法,其特征在于,所述信道包括一个20MHz的主子信道和M个20MHz的从子信道,M大于或等于3,所述至少三个比特中的每个比特对应至少一个从子信道,从子信道对应的比特的取值用于指示所述从子信道是否可用。
  4. 如权利要求3所述的方法,其特征在于,当所述从子信道对应的比特的取值为1时,所述比特用于指示所述从子信道可用,当所述从子信道对应的比特的取值为0时,所述比特用于指示所述从子信道不可用;或者,
    当所述从子信道对应的比特的取值为0时,所述比特用于指示所述从子信道可用,当所述从子信道对应的比特的取值为1时,所述比特用于指示所述从子信道不可用。
  5. 一种带宽模式指示方法,其特征在于,所述方法包括:
    第二设备生成第一非高吞吐量non-HT格式的帧或第一非高吞吐量复制non-HT duplicated格式的帧,所述第一non-HT格式的帧包含第一指示信息,所述第一指示信息用于指示是否使用所述第一non-HT格式的帧的扰码序列的前7个比特中的至少三个比特指示所述带宽模式,所述第一non-HT duplicated格式的帧包含第一指示信息,所述第一指示信息用于指示是否使用所述第一non-HT duplicated格式的帧的扰码序列的前7个比特中的至少三个比特指示 所述带宽模式;
    所述第二设备向所述第一设备发送所述第一non-HT格式的帧或所述第一non-HT duplicated格式的帧。
  6. 如权利要求5所述的方法,其特征在于,所述第一指示信息为所述第一non-HT格式的帧的发送地址字段中的全局唯一/本地执行比特,或者为所述第一non-HT格式的帧的接收地址字段中的单播/广播比特,或者为所述第一non-HT格式的帧的帧控制Frame Control字段中的到达分布式系统ToDS字段、从分布式系统FromDS字段或重试Retry字段。
  7. 如权利要求5所述的方法,其特征在于,所述第一指示信息为所述第一non-HT duplicated格式的帧的发送地址字段中的全局唯一/本地执行比特,或者为所述第一non-HT duplicated格式的帧的接收地址字段中的单播/广播比特,或者为所述第一non-HT duplicated格式的帧的Frame Control字段中的ToDS字段、FromDS字段或Retry字段。
  8. 如权利要求5至7任一项所述的方法,其特征在于,当所述第一non-HT格式的帧的扰码序列的前7个比特中的三个比特指示信道的带宽模式,或者所述第一non-HT duplicated格式的帧的扰码序列的前7个比特中的三个比特指示信道的带宽模式时,所述三个比特为所述扰码序列的前7个比特中的第二个比特、第三个比特和第四个比特,或者,所述三个比特为所述扰码序列的前7个比特中的第四个比特、第六个比特和第七个比特。
  9. 如权利要求5至7任一项所述的方法,其特征在于,所述信道包括一个20MHz的主子信道和M个20MHz的从子信道,M大于或等于3,所述至少三个比特中的每个比特对应至少一个从子信道,从子信道对应的比特的取值用于指示所述从子信道是否可用。
  10. 如权利要求9所述的方法,其特征在于,当所述从子信道对应的比特的取值为1时,所述比特用于指示所述从子信道可用,当所述从子信道对应的比特的取值为0时,所述比特用于指示所述从子信道不可用;或者,
    当所述从子信道对应的比特的取值为0时,所述比特用于指示所述从子信道可用,当所述从子信道对应的比特的取值为1时,所述比特用于指示所述从子信道不可用。
  11. 一种带宽模式指示装置,其特征在于,所述装置包括:处理单元和发送单元;
    所述处理单元,用于当第一设备为极端高吞吐量EHT站点时,生成第一非高吞吐量non-HT格式的帧或第一非高吞吐量复制non-HT duplicated格式的帧,所述第一non-HT格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式,所述第一non-HT duplicated格式的帧的扰码序列的前7个比特中的至少三个比特指示信道的带宽模式,所述信道为所述第一设备与所述装置之间的信道;
    所述处理单元,还用于当第一设备为不支持EHT的非常高吞吐量VHT站点或高效HE站点时,生成第二non-HT格式的帧或第二non-HT duplicated格式的帧,所述第二non-HT格式的帧的扰码序列的前7个比特中的两个比特指示所述信道的带宽模式,所述第二non-HT  duplicated格式的帧的扰码序列的前7个比特中的两个比特指示所述信道的带宽模式,所述信道为所述第一设备与第二设备之间的信道;
    所述发送单元,用于向所述第一设备发送所述第一non-HT格式的帧或所述第一non-HT duplicated格式的帧;
    以及,还用于向所述第一设备发送所述第二non-HT格式的帧或所述第二non-HT duplicated格式的帧。
  12. 如权利要求11所述的装置,其特征在于,当所述第一non-HT格式的帧的扰码序列的前7个比特中的三个比特指示信道的带宽模式,或者所述第一non-HT duplicated格式的帧的扰码序列的前7个比特中的三个比特指示信道的带宽模式时,所述三个比特为所述扰码序列的前7个比特中的第二个比特、第三个比特和第四个比特,或者,所述三个比特为所述扰码序列的前7个比特中的第四个比特、第六个比特和第七个比特。
  13. 如权利要求11所述的装置,其特征在于,所述信道包括一个20MHz的主子信道和M个20MHz的从子信道,M大于或等于3,所述至少三个比特中的每个比特对应至少一个从子信道,从子信道对应的比特的取值用于指示所述从子信道是否可用。
  14. 如权利要求13所述的装置,其特征在于,当所述从子信道对应的比特的取值为1时,所述比特用于指示所述从子信道可用,当所述从子信道对应的比特的取值为0时,所述比特用于指示所述从子信道不可用;或者,
    当所述从子信道对应的比特的取值为0时,所述比特用于指示所述从子信道可用,当所述从子信道对应的比特的取值为1时,所述比特用于指示所述从子信道不可用。
  15. 一种带宽模式指示装置,其特征在于,所述装置包括:
    处理单元,用于生成第一非高吞吐量non-HT格式的帧或第一非高吞吐量复制non-HT duplicated格式的帧,所述第一non-HT格式的帧包含第一指示信息,所述第一指示信息用于指示是否使用所述第一non-HT格式的帧的扰码序列的前7个比特中的至少三个比特指示所述带宽模式,所述第一non-HT duplicated格式的帧包含第一指示信息,所述第一指示信息用于指示是否使用所述第一non-HT duplicated格式的帧的扰码序列的前7个比特中的至少三个比特指示所述带宽模式;
    发送单元,用于向所述第一设备发送所述第一non-HT格式的帧或所述第一non-HT duplicated格式的帧。
  16. 如权利要求15所述的装置,其特征在于,所述第一指示信息为所述第一non-HT格式的帧的发送地址字段中的全局唯一/本地执行比特,或者为所述第一non-HT格式的帧的接收地址字段中的单播/广播比特,或者为所述第一non-HT格式的帧的帧控制Frame Control字段中的到达分布式系统ToDS字段、从分布式系统FromDS字段或重试Retry字段。
  17. 如权利要求15所述的装置,其特征在于,所述第一指示信息为所述第一non-HT  duplicated格式的帧的发送地址字段中的全局唯一/本地执行比特,或者为所述第一non-HT duplicated格式的帧的接收地址字段中的单播/广播比特,或者为所述第一non-HT duplicated格式的帧的Frame Control字段中的ToDS字段、FromDS字段或Retry字段。
  18. 如权利要求15至17任一项所述的装置,其特征在于,当所述第一non-HT格式的帧的扰码序列的前7个比特中的三个比特指示信道的带宽模式,或者所述第一non-HT duplicated格式的帧的扰码序列的前7个比特中的三个比特指示信道的带宽模式时,所述三个比特为所述扰码序列的前7个比特中的第二个比特、第三个比特和第四个比特,或者,所述三个比特为所述扰码序列的前7个比特中的第四个比特、第六个比特和第七个比特。
  19. 如权利要求15至17任一项所述的装置,其特征在于,所述信道包括一个20MHz的主子信道和M个20MHz的从子信道,M大于或等于3,所述至少三个比特中的每个比特对应至少一个从子信道,从子信道对应的比特的取值用于指示所述从子信道是否可用。
  20. 如权利要求19所述的装置,其特征在于,当所述从子信道对应的比特的取值为1时,所述比特用于指示所述从子信道可用,当所述从子信道对应的比特的取值为0时,所述比特用于指示所述从子信道不可用;或者,
    当所述从子信道对应的比特的取值为0时,所述比特用于指示所述从子信道可用,当所述从子信道对应的比特的取值为1时,所述比特用于指示所述从子信道不可用。
  21. 一种信道指示方法,其特征在于,所述方法包括:
    第一设备接收第二设备发送的第一非高吞吐量non-HT格式的高级的请求发送帧RTS-A帧或第一非高吞吐量复制non-HT duplicated格式的RTS-A帧,所述第一non-HT格式的RTS-A帧的扰码序列的前7个比特中的至少三个比特中的每个比特对应信道中的至少一个从子信道,所述第一non-HT duplicated格式的RTS-A帧的扰码序列的前7个比特中的至少三个比特中的每个比特对应所述信道中的至少一个从子信道,所述信道为所述第一设备与所述第二设备之间的信道,从子信道对应的比特的取值用于指示所述从子信道是否可用;
    所述第一设备检测所述信道包括的每个子信道的状态信息;
    所述第一设备根据所述第一non-HT格式的RTS-A帧和所述信道包括的每个子信道的状态信息生成高级的清除发送帧CTS-A帧,或者根据所述第一non-HT duplicated格式的RTS-A帧和所述信道包括的每个子信道的状态信息生成CTS-A帧,所述CTS-A帧包括比特地图,当所述第一non-HT格式的RTS-A帧或所述第一non-HT duplicated格式的RTS-A帧指示某子信道可用且该子信道的信道状态为空闲,则在所述比特地图中所述某个子信道对应的比特设置为1,否则,在所述比特地图中所述某个子信道对应的比特设置为0;
    所述第一设备在所述比特地图中取值为1的比特对应的子信道上向所述第二设备发送所述CTS-A帧。
  22. 如权利要求21所述的方法,其特征在于,所述RTS-A帧为使用扰码序列前7比特中至少三个比特携带带宽信息的RTS帧;或者,
    所述RTS-A帧为一个新的帧类型或者一种新的触发帧,在RTS-A帧中携带一个比特地图,比特地图中的每个比特对应一个20MHz子信道。
  23. 如权利要求21或22所述的方法,其特征在于,所述CTS-A帧为允许发送CTS帧;或者,
    所述CTS-A帧为携带带宽问询BQR的A-Control字段的帧;或者,
    CTS-A帧为携带新的类型的A-Control字段的帧。
  24. 一种信道指示装置,其特征在于,所述装置包括:
    接收单元,用于接收第二设备发送的第一非高吞吐量non-HT格式的高级的请求发送帧RTS-A帧或第一非高吞吐量复制non-HT duplicated格式的RTS-A帧,所述第一non-HT格式的RTS-A帧的扰码序列的前7个比特中的至少三个比特中的每个比特对应信道中的至少一个从子信道,所述第一non-HT duplicated格式的RTS-A帧的扰码序列的前7个比特中的至少三个比特中的每个比特对应所述信道中的至少一个从子信道,所述信道为所述装置与所述第二设备之间的信道,从子信道对应的比特的取值用于指示所述从子信道是否可用;
    处理单元,用于检测所述信道包括的每个子信道的状态信息;根据所述第一non-HT格式的RTS-A帧和所述信道包括的每个子信道的状态信息生成高级的清除发送帧CTS-A帧,或者根据所述第一non-HT duplicated格式的RTS-A帧和所述信道包括的每个子信道的状态信息生成CTS-A帧,所述CTS-A帧包括比特地图,当所述第一non-HT格式的RTS-A帧或所述第一non-HT duplicated格式的RTS-A帧指示某子信道可用且该子信道的信道状态为空闲,则在所述比特地图中所述某个子信道对应的比特设置为1,否则,在所述比特地图中所述某个子信道对应的比特设置为0;
    发送单元,用于在所述比特地图中取值为1的比特对应的子信道上向所述第二设备发送所述CTS-A帧。
  25. 如权利要求24所述的装置,其特征在于,所述RTS-A帧为使用扰码序列前7比特中至少三个比特携带带宽信息的RTS帧;或者,
    所述RTS-A帧为一个新的帧类型或者一种新的触发帧,在RTS-A帧中携带一个比特地图,比特地图中的每个比特对应一个20MHz子信道。
  26. 如权利要求24或25所述的装置,其特征在于,所述CTS-A帧为允许发送CTS帧;或者,
    所述CTS-A帧为携带带宽问询BQR的A-Control字段的帧;或者,
    CTS-A帧为携带新的类型的A-Control字段的帧。
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