WO2020019928A1 - 资源单元指示方法、装置及存储介质 - Google Patents

资源单元指示方法、装置及存储介质 Download PDF

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Publication number
WO2020019928A1
WO2020019928A1 PCT/CN2019/093178 CN2019093178W WO2020019928A1 WO 2020019928 A1 WO2020019928 A1 WO 2020019928A1 CN 2019093178 W CN2019093178 W CN 2019093178W WO 2020019928 A1 WO2020019928 A1 WO 2020019928A1
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Prior art keywords
field
value
segment
indicate
mhz
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PCT/CN2019/093178
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English (en)
French (fr)
Inventor
于健
淦明
李云波
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华为技术有限公司
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP19840982.3A priority Critical patent/EP3820071B1/en
Priority to KR1020217005167A priority patent/KR102523526B1/ko
Priority to JP2021504237A priority patent/JP7305743B2/ja
Priority to EP23187864.6A priority patent/EP4290975A3/en
Priority to KR1020237012836A priority patent/KR20230056794A/ko
Publication of WO2020019928A1 publication Critical patent/WO2020019928A1/zh
Priority to US17/157,072 priority patent/US11626958B2/en
Priority to JP2023105836A priority patent/JP2023138974A/ja

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0092—Indication of how the channel is divided
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a method, an apparatus, and a storage medium for indicating a resource unit.
  • 802.11ax provides downlink (Downlink, DL) orthogonal frequency division multiple access (OFDMA) and downlink (Downlink, DL) multiple users (MU) multiple input multiple Output (Multiple Input, Multiple Output, MIMO) resource unit (RU) indication method.
  • the sender sends a Physical Layer Protocol Data Unit (PPDU), which contains High Efficient-Signal Field-A (High Efficient-Signal Field-A) and High Efficient-Signal Field (B) -B), where HE-SIG-A is used to indicate the symbol length of HE-SIG-B, Modulation and Coding Scheme (MCS) of HE-SIG-B, the bandwidth of the entire PPDU, and so on.
  • PPDU Physical Layer Protocol Data Unit
  • MCS Modulation and Coding Scheme
  • HE-SIG-A performs copy transmission on each 20MHz.
  • the PPDU also contains HE-SIG-B, which provides resource indication information for DL, MIMO, and DL OFDMA.
  • HE-SIG-B is individually coded at each 20MHz. The coding structure of HE-SIG-B at each 20MHz is shown in Figure 1 below.
  • Figure 1 is a schematic diagram of the coding structure of HE-SIG-B at each 20MHz provided by an embodiment of the present application, where the entire HE- SIG-B is divided into two parts, namely the public part field and the site-by-site field, where the public part field contains 1 to N resource unit allocation subfields (RU), and the intermediate 26 exists when the bandwidth is greater than or equal to 80MHz.
  • -26-Tone resource unit indication field of subcarrier followed by Cyclic Redundancy Code (CRC) for checking and Tail subfield for cyclic decoding
  • CRC Cyclic Redundancy Code
  • Fields according to the order of resource unit allocation.
  • FIG. 2 is a schematic diagram of the 80 MHz subcarrier distribution and RU distribution provided by an embodiment of the present application.
  • the bandwidth is 80 MHz
  • the entire bandwidth is composed of 4 resource units of 242-tone RU.
  • the entire bandwidth may be composed of an entire 996-tone RU, or may be composed of various combinations of 26-tone RU, 52-tone RU, 106-tone RU, 242-tone RU, 484-tone RU.
  • the leftmost part in FIG. 2 can be regarded as the lowest frequency, and the rightmost part in FIG. 2 can be regarded as the highest frequency. From left to right, the RUs in the 242-tone RU can be labeled.
  • FIG. 3 is a schematic diagram of the indication of HE-SIG-B when the PPDU bandwidth is 80 MHz according to an embodiment of the present application.
  • CC1 includes the first and third resource unit allocators in the 242-tone RU range.
  • CC2 contains the second and fourth 242-tone RU resource field subfields and its corresponding site-by-site field.
  • an intermediate 26-tone RU indication of 80 MHz is carried, indicating whether the resource unit is used to transmit data.
  • the prior art implements resource unit indications in the range of 20 MHz to 160 MHz, but its overhead is large.
  • each CC includes two resource unit allocation sub-indication fields and includes Site-by-site fields for all users in the two 242-tone RUs have a large overhead.
  • the next-generation standard considers a PPDU bandwidth of 320Mhz, the overhead will further increase exponentially. Therefore, how can the new PPDU of the next-generation standard of 802.11ax support a larger bandwidth (such as 320Mhz) OFDMA or MU- with less overhead? MIMO transmission is a problem that needs to be considered in this application.
  • the present application provides a resource unit indication method, device, and storage medium, thereby implementing data transmission that supports greater bandwidth with less overhead.
  • the present application provides a resource unit indication method, including: an AP sends a physical layer protocol data unit PPDU to multiple STAs; wherein the transmission bandwidth of the PPDU is divided into M segments, where M is an integer greater than 1, The transmission bandwidth is greater than or equal to 80 MHz.
  • the PPDU includes: M first fields, the M first fields correspond to the M segments one by one, the first field is transmitted on the corresponding segment, and the first field is used to indicate that the AP is multi- A resource unit RU allocated by at least one STA of the STAs.
  • the present application provides a resource unit indication method, including: a STA receives a PPDU sent by an AP; wherein the transmission bandwidth of the PPDU is divided into M segments, where M is an integer greater than 1, and the transmission bandwidth is greater than or equal to 80 MHz
  • the PPDU includes: M first fields, the M first fields correspond to the M segments one by one, the first field is transmitted on the corresponding segment, and the first field is used to indicate that the AP is at least one of multiple STAs
  • the resource unit RU allocated by the STA, the STA is any one of multiple STAs; the STA performs uplink data transmission according to the first field.
  • the beneficial effects of the present application include: by using the resource unit indication method provided by the first aspect or the second aspect, thereby supporting data transmission with larger bandwidth with less overhead.
  • the RU when the RU is greater than the largest RU included in the segment corresponding to the first field, the RU is a segment combination composed of multiple segments, or the RU is composed of all or part of the fragments included in the multiple segments.
  • Sharding combination that is, this application implements an indication method of segmented combination or fragmented combination.
  • the PPDU further includes: indication information, where the indication information is used to indicate the number of STAs that perform data transmission on the RU.
  • the RU is a segmented combination.
  • the correspondence between the first field and the segmented combination is any of the following: when the first field is the first value, The segment combination is the combination of the first segment and the second segment; when the first field is the second value, the segment combination is the combination of the first segment and the third segment; when the first field is the third value When the first field is the fourth value, the segment combination is the combination of the second and third segments; when the first field is the first When the value is five, the segment combination is the combination of the second and fourth segments; when the first field is the sixth value, the segment combination is the combination of the third segment and the fourth segment; when the first field is When it is the seventh value, the segment combination is the combination of the first segment, the second segment, and the third segment; when the first field is the eighth value, the segment combination is the first segment and the second segment And the fourth segment; when the first field is a ninth value, the segment combination is a combination of the first
  • the length of the first field is 8 bits.
  • RU is a fragment combination.
  • the correspondence between the first field and the fragment combination is any of the following: when the first field is the first value, The fragment combination is the combination of the first fragment, the second fragment, and the third fragment; when the first field is the second value, the fragment combination is the first fragment, the second fragment, and the fourth fragment.
  • the combination of the fragments is the combination of the first, the third, and the fourth fragment; when the first field is the fourth value, the combination of the fragments is the second A combination of a slice, a third slice, and a fourth slice; when the first field is a fifth value, the slice combination is a combination of the first slice, the second slice, the third slice, and the fourth slice;
  • the first slice and the second slice constitute one of the M segments, and the third slice and the fourth slice constitute the other of the M segments.
  • the length of the first field is 8 bits.
  • the first field is also used to indicate the number of STAs that perform data transmission on the RU.
  • the RU is a segmented combination.
  • the correspondence between the first field and the segmented combination and the number of STAs that perform data transmission through the segmented combination includes at least one of the following: Item: When the first field is the first value, the segment combination is the combination of the first segment and the second segment, and the number of STAs for data transmission through the segment combination is the first number; when the first field is the first When the value is two, the segment combination is the combination of the first segment and the third segment. The number of STAs for data transmission through the segment combination is the second number.
  • the segment combination is The combination of the first segment and the fourth segment, the number of STAs for data transmission through the segment combination is the third number; when the first field is the fourth value, the segment combination is the second segment and the third segment The combination of segments. The number of STAs for data transmission through the segment combination is the fourth number.
  • the segment combination is the combination of the second segment and the fourth segment.
  • the number of STAs performing data transmission is the fifth number
  • the segment combination is the combination of the third segment and the fourth segment, and the number of STAs that perform data transmission through the segment combination is the sixth number; when the first field is the seventh
  • the segment combination is a combination of the first segment, the second segment, and the third segment.
  • the number of STAs that perform data transmission through the segment combination is the seventh number.
  • the segment combination is a combination of the first segment, the second segment, and the fourth segment.
  • the number of STAs that perform data transmission through the segment combination is the eighth number; when the first field is a ninth value, the segment combination is It is a combination of the first segment, the third segment, and the fourth segment. The number of STAs that perform data transmission through the segment combination is the ninth number.
  • the segment combination When the first field is the tenth value, the segment combination is the second. The combination of the segment, the third segment, and the fourth segment. The number of STAs that perform data transmission through the segment combination is the tenth number.
  • the segment combination When the first field is the eleventh value, the segment combination is the first segment.
  • Second, third, and fourth segments STA number of line data is transmitted to the eleventh quantity; wherein a first segment, a second segment, a third segment, a fourth segment into M segments of four different segments.
  • the length of the first field is 9 bits.
  • the RU is a fragment combination.
  • the correspondence between the first field and the fragment combination and the number of STAs for data transmission through the fragment combination includes at least one of the following: Item: When the first field is the first value, the fragment combination is the combination of the first fragment, the second fragment, and the third fragment, and the number of STAs for data transmission through the fragment combination is the first number; When the first field is the second value, the fragment combination is the combination of the first fragment, the second fragment, and the fourth fragment, and the number of STAs for data transmission through the fragment combination is the second number; when the first field is When it is the third value, the combination of the fragments is the combination of the first fragment, the third fragment, and the fourth fragment, and the number of STAs that perform data transmission through the fragment combination is the third number; when the first field is the fourth When the value is a value, the fragment combination is a combination of the second fragment, the third fragment, and the fourth fragment.
  • the number of STAs for data transmission through the fragment combination is the fourth number.
  • the shard combination is the first shard, the second shard, and the third shard
  • the combination of the fourth fragment, the number of STAs for data transmission through the combination of fragments is the fifth number; wherein the first fragment and the second fragment constitute one of the M fragments, and the third fragment and The fourth slice constitutes another of the M fragments.
  • the first fields are all 9 bits.
  • the RU includes: a segment corresponding to the first field, thereby further reducing resource overhead.
  • the PPDU further includes: M second fields, the M second fields correspond to the M first fields one by one, and the second field includes at least one of the following information: the number of symbols of the first field corresponding to the second field
  • the modulation and coding strategy MCS of the first field corresponding to the second field the compression mode of the first field corresponding to the second field, the transmission bandwidth of the PPDU, the basic service set color, the guard interval, and the long training sequence size.
  • the PPDU includes N physical layer protocol data subunits, where N is less than or equal to M, thereby improving the flexibility of data transmission.
  • the present application provides a method for indicating a resource unit, including: an AP sends a PPDU to multiple STAs, where the PPDU includes M triggering frames, where M is an integer greater than 1, and the transmission bandwidth of the PPDU is divided into M points; Segment, the transmission bandwidth is greater than or equal to 40MHz, M trigger frames correspond to M segments one by one, the trigger frame includes: a first field, the first field is transmitted on the segment corresponding to the trigger frame, the first field is used to indicate the AP A resource unit RU allocated to at least one STA among a plurality of STAs.
  • the present application provides a resource unit indication method, including: a STA receives a PPDU sent by an AP, where the PPDU includes M triggering frames, where M is an integer greater than 1, and the STA performs uplink data transmission according to the first field;
  • the transmission bandwidth of the PPDU is divided into M segments, and the transmission bandwidth is greater than or equal to 40 MHz.
  • the M trigger frames correspond to the M segments one by one.
  • the trigger frame includes: the first field, and the first field corresponds to the trigger frame. Transmission on segments.
  • the first field is used to indicate the resource unit RU allocated by the AP to at least one of the multiple STAs, and the STA is any of the multiple STAs.
  • the RU when the RU is greater than the largest RU included in the segment corresponding to the first field, the RU is a segment combination composed of multiple segments, or the RU is composed of all or part of the fragments included in the multiple segments. Sharding combination.
  • the RU is a segmented combination.
  • the correspondence between the first field and the segmented combination is any of the following: when the first field is the first value, The segment combination is the combination of the first segment and the second segment; when the first field is the second value, the segment combination is the combination of the first segment and the third segment; when the first field is the third value When the first field is the fourth value, the segment combination is the combination of the second and third segments; when the first field is the first When the value is five, the segment combination is the combination of the second and fourth segments; when the first field is the sixth value, the segment combination is the combination of the third segment and the fourth segment; when the first field is When it is the seventh value, the segment combination is the combination of the first segment, the second segment, and the third segment; when the first field is the eighth value, the segment combination is the first segment and the second segment And the fourth segment; when the first field is a ninth value, the segment combination is a combination of the first
  • the length of the first field is 8 bits.
  • RU is a fragment combination.
  • the correspondence between the first field and the fragment combination includes at least one of the following: When the first field is a first value, The fragment combination is the combination of the first fragment, the second fragment, and the third fragment; when the first field is the second value, the fragment combination is the first fragment, the second fragment, and the fourth fragment.
  • the combination of the fragments is the combination of the first, the third, and the fourth fragment; when the first field is the fourth value, the combination of the fragments is the second A combination of a slice, a third slice, and a fourth slice; when the first field is a fifth value, the slice combination is a combination of the first slice, the second slice, the third slice, and the fourth slice;
  • the first slice and the second slice constitute one of the M segments, and the third slice and the fourth slice constitute the other of the M segments.
  • the first field is 8 bits.
  • the trigger frame further includes: a second field; when the second field is the first value and the RU is less than or equal to 996-tone RU, the A value is used to indicate that the RU belongs to the main 80MHz in the segment corresponding to the trigger frame.
  • the second field is the second value and the RU is less than or equal to 996-tone
  • the second value is used to indicate that the RU belongs to the corresponding frame of the trigger frame. From 80MHz in segments;
  • the first value is used to indicate that the RU belongs to the low frequency 80MHz in the segment corresponding to the trigger frame; when the second field is the second value, When the RU is less than or equal to 996-tone, the second value is used to indicate that the RU belongs to the high-frequency 80 MHz in the segment corresponding to the trigger frame.
  • the trigger frame further includes: a third field; when the third field is the first value and the RU is less than or equal to 996-tone RU, the first value is used to indicate that the RU belongs to the transmission bandwidth The lowest frequency is 80MHz; when the third field is the second value and RU is less than or equal to 996-tone RU, the second value is used to indicate that the RU belongs to the low-frequency 80MHz in the transmission bandwidth; when the third field is the third value When the RU is less than or equal to 996-tone RU, the third value is used to indicate that the RU belongs to the sub-frequency 80MHz in the transmission bandwidth; when the third field is the fourth value and RU is less than or equal to 996-tone RU, the third value The four values are used to indicate that the RU belongs to the highest frequency of 80 MHz in the transmission bandwidth.
  • the third field is the first value and the RU is less than or equal to 996-tone RU
  • the first value is used to indicate that the RU belongs to the main 80MHz in the transmission bandwidth
  • the third field is the second value and the RU is less than or When it is equal to 996-tone RU
  • the second value is used to indicate that the RU belongs to the first slave 80MHz in the transmission bandwidth
  • the third field is the third value and RU is less than or equal to 996-tone RU
  • the third value is used to indicate RU belongs to the second slave 80MHz in the transmission bandwidth
  • the fourth value is used to indicate that the RU belongs to the third slave 80MHz in the transmission bandwidth.
  • the RU includes: a segment corresponding to the first field.
  • the present application provides a resource unit indication device.
  • the device is an access point AP and includes a processing module and a sending module.
  • the processing module is used to generate physical layer protocol data unit PPDUs; the sending module is used to send PPDUs to multiple station STAs; wherein the transmission bandwidth of the PPDU is divided into M segments, where M is an integer greater than 1, and the transmission bandwidth is greater than or equal to 80MHz, PPDU includes: M first fields, M first fields correspond to M segments one by one, the first field is transmitted on the corresponding segment, the first field is used to indicate that the AP is a multi-site STA A resource unit RU allocated by at least one STA.
  • the present application provides a resource unit indication device.
  • the device is a station STA, and includes a receiving module and a processing module.
  • the receiving module is configured to receive a physical layer protocol data unit PPDU sent by the access point AP;
  • the processing module is configured to analyze the PPDU according to the first field; wherein the transmission bandwidth of the PPDU is divided into M segments, where M is An integer greater than 1 and the transmission bandwidth is greater than or equal to 80 MHz.
  • the PPDU includes: M first fields, M first fields correspond to M segments one by one, and the first field is transmitted on the corresponding segment.
  • the first field is used for For instructing the AP to allocate a resource unit RU for at least one of the plurality of STAs, the STA is any one of the plurality of STAs.
  • the present application provides a resource unit indication device.
  • the device is an access point AP and includes a processing module and a sending module.
  • the processing module is used to generate physical layer protocol data unit PPDUs; the sending module is used to send PPDUs to multiple site STAs.
  • the PPDU includes M trigger frames, where M is an integer greater than 1. Among them, the transmission bandwidth of the PPDU is divided into M packets. Segment, the transmission bandwidth is greater than or equal to 40MHz, M trigger frames correspond to M segments one by one, the trigger frame includes: a first field, the first field is transmitted on the segment corresponding to the trigger frame, the first field is used to indicate the AP A resource unit RU allocated to at least one STA among a plurality of STAs.
  • the present application provides a resource unit indicating device.
  • the device is a station STA, and includes a receiving module and a processing module.
  • the receiving module is configured to receive a physical layer protocol data unit PPDU sent by the access point AP.
  • the PPDU includes M trigger frames, where M is an integer greater than 1.
  • the processing module is configured to perform uplink data transmission according to the first field.
  • the transmission bandwidth is divided into M segments.
  • the transmission bandwidth is greater than or equal to 40 MHz.
  • the M trigger frames correspond to the M segments one by one.
  • the trigger frame includes: the first field, and the first field is transmitted on the segment corresponding to the trigger frame.
  • the first field is used to indicate a resource unit RU allocated by the AP to at least one of the plurality of STAs, and the STA is any one of the plurality of STAs.
  • the present application provides a resource unit indicating device.
  • the device is an access point AP, and includes: a processor and a transmitter.
  • the processor is used to generate physical layer protocol data unit PPDUs; the transmitter is used to send PPDUs to multiple station STAs; wherein the transmission bandwidth of the PPDU is divided into M segments, where M is an integer greater than 1, and the transmission bandwidth is greater than or equal to 80 MHz,
  • the PPDU includes: M first fields, the M first fields correspond to the M segments one by one, the first field is transmitted on the corresponding segment, and the first field is used to indicate that the AP is at least one of a plurality of site STAs Resource unit RU allocated by the STA.
  • the present application provides a resource unit indication device.
  • the device is a station STA, and includes a receiver and a processor.
  • the receiver is configured to receive a physical layer protocol data unit PPDU sent by the access point AP;
  • the processor is configured to analyze the PPDU according to the first field; wherein the transmission bandwidth of the PPDU is divided into M segments, where M is an integer greater than 1.
  • the PPDU includes: M first fields, the M first fields correspond to the M segments one by one, the first field is transmitted on the corresponding segment, the first field is used to indicate that the AP is A resource unit RU allocated by at least one STA in the plurality of STAs, and the STA is any one of the plurality of STAs.
  • the present application provides a resource unit indication device.
  • the device is an access point AP, and includes: a processor and a transmitter.
  • the processor is used to generate a physical layer protocol data unit PPDU; the transmitter is used to send PPDUs to multiple station STAs.
  • the PPDU includes M trigger frames, where M is an integer greater than 1. Among them, the PPDU transmission bandwidth is divided into M segments The transmission bandwidth is greater than or equal to 40 MHz.
  • M trigger frames correspond to M segments one by one.
  • the trigger frame includes: a first field, the first field is transmitted on the segment corresponding to the trigger frame, and the first field is used to indicate that the AP is multi- A resource unit RU allocated by at least one of the STAs.
  • the present application provides a resource unit indication device.
  • the device is a station STA, and includes a receiver and a processor.
  • the receiver is used to receive a physical layer protocol data unit PPDU sent by the access point AP.
  • the PPDU includes M trigger frames, where M is an integer greater than 1.
  • the processor is configured to perform uplink data transmission according to the first field.
  • the PPDU transmission bandwidth Is divided into M segments is greater than or equal to 40MHz
  • M trigger frames correspond to M segments one by one
  • the trigger frame includes: the first field, the first field is transmitted on the segment corresponding to the trigger frame, the A field is used to indicate the resource unit RU allocated by the AP to at least one STA in the plurality of STAs, and the STA is any one of the plurality of STAs.
  • the present application provides a computing storage medium including program instructions, and the program instructions are used to implement the foregoing resource unit instruction method.
  • the present application provides a computer program product including program instructions, and the program instructions are used to implement the resource unit indication method as described above.
  • the application provides a resource unit indication method, device and storage medium, including: an AP sends a physical layer protocol data unit PPDU to multiple STAs; wherein the transmission bandwidth of the PPDU is divided into M segments, where M is an integer greater than 1. , The transmission bandwidth is greater than or equal to 80MHz, the PPDU includes: M first fields, the M first fields correspond to the M segments one by one, the first field is transmitted on the corresponding segment, the first field is used to indicate that the AP is A resource unit RU allocated by at least one STA in the plurality of site STAs. Thus, it supports data transmission with larger bandwidth under less overhead.
  • FIG. 1 is a schematic diagram of a HE-SIG-B coding structure at each 20 MHz provided by an embodiment of the present application;
  • FIG. 2 is a schematic diagram of 80 MHz subcarrier distribution and RU distribution provided by an embodiment of the present application
  • FIG. 3 is a schematic diagram of an indication of HE-SIG-B when a PPDU bandwidth is 80 MHz according to an embodiment of the present application;
  • FIG. 4 is a schematic structural diagram of an efficient multi-user physical layer protocol data unit (High efficient multiple user PPDU, HE MU PPDU);
  • FIG. 5 is a schematic diagram of a channel distribution when a bandwidth of 160 MHz is provided according to an embodiment of the present application
  • FIG. 6 is a schematic diagram of a 20 MHz subcarrier distribution and an RU distribution according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a 40 MHz subcarrier distribution and an RU distribution provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of an indication of HE-SIG-B signaling when a PPDU bandwidth is 20 MHz according to an embodiment of the present application;
  • FIG. 9 is a schematic diagram of an indication of HE-SIG-B signaling when a PPDU bandwidth is 40 MHz according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of an indication of HE-SIG-B signaling when a PPDU bandwidth is 160 MHz according to an embodiment of the present application;
  • FIG. 11 is a schematic diagram of an application scenario provided by an embodiment of the present application.
  • FIG. 13 is a schematic diagram of a 320 Mhz bandwidth with 80 MHz as a segment unit according to an embodiment of the present application
  • FIG. 14 is a schematic diagram of an EHT-SIG-B using 80 MHz as a segment unit (including two CCs) according to an embodiment of the present application;
  • FIG. 15 is a schematic diagram of an EHT-SIG-B with 80 MHz as a segment unit (including four CCs) according to an embodiment of the present application;
  • FIG. 16 is a schematic diagram of a segmented combination-based EHT-SIG-B according to an embodiment of the present application.
  • FIG. 17 is a schematic diagram of a segmented combination-based EHT-SIG-B according to an embodiment of the present application.
  • FIG. 18 is a schematic diagram of a 320 MHz bandwidth with 160 MHz as a segment unit according to an embodiment of the present application.
  • FIG. 19 is a schematic diagram of an EHT-SIG-B with 160 MHz as a segment unit (two CCs) according to an embodiment of the present application;
  • FIG. 20 is a schematic diagram of an EHT-SIG-B with 160 MHz as a segment unit (four CCs) according to an embodiment of the present application;
  • 21 is a schematic diagram of an EHT-SIG-B based on a fragment combination provided by an embodiment of the present application.
  • FIG. 22 is a schematic diagram of an EHT-SIG-B based on a fragment combination provided by an embodiment of the present application.
  • FIG. 23 is a schematic diagram of EHT-SIG-A on a slice according to an embodiment of the present application.
  • FIG. 24 is a flowchart of a resource unit indication method according to an embodiment of the present application.
  • FIG. 25 is a schematic diagram of a common field and a site-by-site field included in 4 trigger frames with 80 MHz as a segment unit according to an embodiment of the present application;
  • FIG. 26 is a schematic diagram of transmitting an EHT PPDU on a partial segment according to an embodiment of the present application.
  • FIG. 27 is a schematic diagram of transmitting a non-EHT PPDU on a partial segment according to an embodiment of the present application.
  • FIG. 28 shows a schematic block diagram of an apparatus 2800 on the access point side according to an embodiment of the present application
  • FIG. 29 shows a schematic block diagram of another communication device 2900 on the access point side according to an embodiment of the present application.
  • FIG. 30 shows a schematic block diagram of a site-side device 3000 according to an embodiment of the present application.
  • FIG. 31 is a schematic block diagram of another station-side communication device 3100 according to an embodiment of the present application.
  • Wireless Local Area Network started from 802.11a / g, went through 802.11n, 802.11ac, and is now under discussion 802.11ax.
  • the bandwidth supported by its PPDU is shown in Table 1:
  • the 802.11n standard is called High Throughput (HT)
  • the 802.11ac standard is called Very High Throughput (VHT)
  • the 802.11ax is called High Efficiency (HE).
  • Standards such as 802.11a / g are collectively referred to as Non-High Throughput (Non-HT).
  • the 802.11 standard Prior to the 802.11ax standard, the 802.11 standard supported Orthogonal Frequency Division Multiplexing (OFDM) transmission, and the entire bandwidth was uniformly allocated to one or a group of STAs for Single User (SU) transmission or multi-user downlink transmission. Input Multiple Output (Downlink Multiple User, Multiple Multiple Input, Multiple Multiple Output, DL, MU, MIMO) transmission.
  • OFDM Orthogonal Frequency Division Multiple Access
  • 802.11ax Orthogonal Frequency Division Multiple Access (OFDMA) technology was newly introduced, and the entire bandwidth was divided into one or more RUs.
  • OFDMA Orthogonal Frequency Division Multiple Access
  • 802.11ax introduces DL OFDMA and Uplink (UL) OFDMA.
  • FIG. 4 is a schematic diagram of the structure of a high efficient multi-user physical layer protocol data unit (High efficient multiple user PPDU, HE MU PPDU) As shown in FIG. 4, the PPDU is divided into a preamble and a data field part, where the preamble part includes two parts of HE signaling fields, HE-SIG-A and HE-SIG-B.
  • the preamble part includes two parts of HE signaling fields, HE-SIG-A and HE-SIG-B.
  • HE-SIG-A is used to indicate the bandwidth of the PPDU, the number of symbols contained in HE-SIG-B, the MCS used by HE-SIG-B, whether the compression mode is used in HE-SIG-B, etc .; and HE-SIG-B is shown in Figure 1. It mainly includes a common part field and a site-by-site field.
  • the common part field contains 1 to N resource unit allocation subfields, and the intermediate 26 subcarriers exist when the bandwidth is greater than or equal to 80MHz.
  • Resource unit 26-tone RU
  • CRC verification
  • Tail subfield for cyclic decoding
  • M site fields 1 ⁇ M site fields (User Field)
  • M site fields are usually two in a group, and each two site field is followed by a CRC and tail field. Except for the last group, there may be 1 or 2 site fields.
  • the 802.11 standard usually uses 20MHz as the basic bandwidth, and the supported bandwidth is usually an integer multiple of 20MHz (20, 40, 80, and 160MHz). 20MHz is used as a channel.
  • FIG. 5 is a schematic diagram of a channel distribution when the bandwidth provided by an embodiment of the present application is 160MHz. As shown in FIG. , P20)), from the 20MHz channel (Secondary 20MHz, S20), from the 40MHz channel (S40), from the 80MHz (S80) channel.
  • 80MHz is used as a fragment unit to divide the PPDU transmission bandwidth to form two fragments.
  • the current HE-SIG-B in 802.11ax has provided a resource unit indication method for DL OFDMA and DL MU MIMO.
  • the indication mode of the resource unit allocation subfield depends on the subcarrier distribution (Tone Plan) under different PPDU bandwidths in 802.11ax.
  • FIG. 6 is a schematic diagram of a 20 MHz subcarrier distribution and an RU distribution according to an embodiment of the present application.
  • the bandwidth when the bandwidth is 20 MHz, the entire bandwidth may be composed of a whole 242-tone RU or 26-tone.
  • RU, 52-tone RU, 106-tone RU various combinations.
  • it also includes some Guard subcarriers, empty subcarriers (the subcarrier where 1 is in the figure is the empty subcarrier, where 1 represents the number of empty subcarriers is 1), or direct current (Direct Current, DC) subcarrier.
  • DC Direct Current
  • FIG. 7 is a schematic diagram of a 40 MHz subcarrier distribution and an RU distribution according to an embodiment of the present application. As shown in FIG. 7, when the bandwidth is 40 MHz, the entire bandwidth is approximately equivalent to a copy of the 20 MHz subcarrier distribution.
  • the entire 484-tone RU is composed of various combinations of 26-tone RU, 52-tone RU, 106-tone RU, and 242-tone RU.
  • FIG. 2 shows the sub-carrier distribution and RU distribution at 80 MHz.
  • the entire bandwidth is composed of four resource units of 242-tone RU.
  • the entire bandwidth can be composed of a whole 996-tone RU, or various combinations of 26-tone RU, 52-tone RU, 106-tone RU, 242-tone RU, 484-tone RU.
  • the entire bandwidth can be viewed as a copy of the two 80Mhz subcarrier distributions.
  • the entire bandwidth can be composed of a whole 2 * 996-tone RU or 26-tone RU, 52-tone RU, 106-tone RU, 242-tone RU, 484-tone RU, 996-tone RU various combinations.
  • the above various subcarrier distributions are based on 242-tone RU.
  • the leftmost side can be regarded as the lowest frequency, and the rightmost side can be regarded as the highest frequency.
  • 242-tone RU can be labeled.
  • FIG. 8 is a schematic diagram of the HE-SIG-B signaling indication when the PPDU bandwidth is 20 MHz according to an embodiment of the present application.
  • the HE-SIG-B includes only one CC.
  • the CC includes a resource unit allocation subfield, which is used to indicate a resource unit allocation indication within a data portion 242-tone (subcarrier) RU range.
  • the resource unit allocation subfield is 8 bits, and indicates by way of indexing all possible resource unit permutations and combinations in the 242-tone RU.
  • an index is used to indicate the number of users (that is, the number of STAs) for SU / MU-MIMO transmission in the RU.
  • the index of the resource unit allocation subfield is shown in Table 2:
  • the first column represents the 8-bit index of the resource unit allocation subfield
  • the middle columns # 1 to # 9 represent the permutations and combinations of different resource units, where a number in a table represents the subunits contained in the resource unit Number of carriers.
  • the index 00111y 2 y 1 y 0 indicates that the entire 242-tone RU range is divided into 52 tone RUs, 52-tone RUs, 26-tone RUs, and 106-tone RUs.
  • the third column represents the number of entries indicating the same resource unit allocation. The number of entries is used to indicate the number of users included in the 106-tone RU.
  • the number of entries corresponding to 00010y 2 y 1 y 0 is 8, because y 2 y 1 y 0 is also used when indicating resource unit allocation.
  • y 2 y 1 y 0 is also used when indicating resource unit allocation.
  • the resource unit allocation subfield can also indicate the case where the resource unit is greater than 242-tone RU, such as 484-tone RU or 996-tone RU, which means that the STA is assigned a Resource units for larger RUs.
  • the site information of the STAs allocated within the 242-tone RU range is indicated in the site-by-site field in the order of resource allocation.
  • FIG. 9 is a schematic diagram of the indication of HE-SIG-B signaling when the PPDU bandwidth is 40 MHz according to an embodiment of the present application.
  • the PPDU bandwidth is 40 MHz
  • the CC1 of the first HE-SIG-B channel includes the resource element allocation subfield in the range of the first 242-tone RU and the corresponding site-by-site field
  • the CC2 of the second HE-SIG-B channel Contains the second resource unit allocation subfield in the range of 242-tone RU and the corresponding site-by-site field.
  • Figure 3 shows the indication of HE-SIG-B signaling when the PPDU bandwidth is 80 MHz.
  • CC1, CC2, CC1, CC2 to indicate resource unit allocation information on 4 channels, where CC1 contains the first and third 242-tone resource unit allocation subfields in the range And the corresponding site-by-site field within its range; CC2 contains the resource unit subfields within the second and fourth 242-tone RU range and the corresponding site-by-site field within its range.
  • an intermediate 26-tone RU indication of 80 MHz is carried, indicating whether the resource unit is used to transmit data.
  • FIG. 10 is a schematic diagram of the indication of HE-SIG-B signaling when the PPDU bandwidth is 160 MHz according to an embodiment of the present application.
  • the PPDU bandwidth is 160 MHz
  • the two CCs each carry two 80MHz intermediate 26-tone RU instructions at 160MHz, indicating whether the resource unit is used to transmit data.
  • 802.11ax will indicate HE-SIG-B in compressed mode in HE-SIG-A, and indicate the number of users performing MU-MIMO transmission at full bandwidth. At this time, HE-SIG-B does not have a common field, and directly indicates a site-by-site field.
  • each CC includes two resource unit allocation sub-indication fields, and includes It has a site-by-site field for all users in the two 242-tone RUs, which has a large overhead.
  • each CC includes four resource unit allocation subfields, and includes four site-by-site fields for all users in the 242-tone RU, which has a large overhead.
  • the next-generation standard considers a PPDU bandwidth of 320Mhz, the overhead will further increase. Therefore, how to support OFDMA or MU-MIMO transmission with a larger bandwidth (such as 320Mhz) with less overhead is required by this application. Questions to consider.
  • the technical solutions in the embodiments of the present application can be applied to communication systems supporting 802.11ax next-generation or next-generation standards in a wireless local area network WLAN, and can also be applied to other communication systems supporting large-bandwidth OFDM transmission.
  • the next-generation standard of 802.11ax is called Extremely High Throughput (EHT).
  • EHT Extremely High Throughput
  • the next-generation standard of 802.11ax may also have other names, such as extremely (high) throughput. Rate (Extreme Throughput, XT) or Ultra High Throughput (UHT), etc., this application does not limit this.
  • EHT Extremely High Throughput
  • the embodiment of the present application is described by using a WLAN system as an example.
  • the application scenario may include one or more access points AP and one or more site STAs, where the access point An AP may be a device used to communicate with a site.
  • the access point can be any kind of device with wireless transceiver function or a chip that can be set on the device.
  • the device includes but is not limited to: evolved Node B (eNB), radio network controller (radio network) controller (RNC), Node B (Node B, NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home NodeB, or home NodeB, HNB), baseband unit (BBU), access point (AP), wireless relay node, wireless backhaul node, and transmission point in wireless fidelity (WIFI) system (TP) or transmission and reception point (TRP), etc., and may also be a base station that supports the 5G protocol.
  • eNB evolved Node B
  • RNC radio network controller
  • Node B Node B
  • BSC base station controller
  • BTS base transceiver station
  • home base station e.g., home NodeB, or home NodeB, HNB
  • BBU baseband unit
  • AP access point
  • WIFI wireless relay node
  • TP wireless backhaul node
  • TRP transmission and reception point
  • the station STA user equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device.
  • the station can also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a station in a wireless local area network, a vehicle-mounted device, a wearable device, a terminal device in the future 5G network, or a public land mobile communication that will evolve in the future Terminal equipment in a public network (PLMN).
  • SIP session initiation protocol
  • the technical solution of the present application can be applied to data communication between an AP and one or more STAs, and is also applicable to communication between an AP and multiple APs, and is also applicable to communication between an STA and multiple STAs.
  • the following uses the data communication between the AP and multiple STAs as an example to describe the technical solution of the present application.
  • the main process of the technical solution of the present application is that the AP sends a PPDU to the STA.
  • the transmission bandwidth of the PPDU is divided into M segments, and the PPDU includes the EHT-SIG-B corresponding to each segment (that is, the first embodiment and the following embodiment)
  • the first field in the second or, for the case where the segment includes multiple CCs, EHT-SIG-B includes the first field
  • EHT-SIG-A corresponding to each segment (that is, The second field in the first and second embodiments, or, in the case where the segment includes multiple CCs, EHT-SIG-A includes the second field).
  • the AP indicates the RU allocation of the STA corresponding to the segment through the first field in each segment.
  • the RU indicated in the first field When the size of the RU indicated in the first field is less than or equal to the maximum RU included in the segment corresponding to the first field, the RU indicated in the first field is only allocated to the STA of the segment to which it belongs. When the size of the RU indicated by the first field is larger than the maximum RU included in the segment corresponding to the first field, the RU indicated by the first field is a segment combination or a fragment combination.
  • the STA After receiving the PPDU, the STA obtains the first field of the segment to which the STA belongs, and determines the RU to which the STA is allocated through the first field.
  • the RU is the segment, segment combination, or segment combination corresponding to the first field.
  • FIG. 12 is a flowchart of a resource unit indication method according to an embodiment of the present application. As shown in FIG. 12, the method includes the following steps:
  • Step S1201 The AP generates a PPDU.
  • the transmission bandwidth of the PPDU is divided into M segments, where M is an integer greater than 1, and the transmission bandwidth is greater than or equal to 80 MHz.
  • the PPDU includes: M first fields, and M first The fields correspond to the M segments one by one.
  • the first field is transmitted on the corresponding segments.
  • the first field is used to indicate the RU allocated by the AP to at least one of the STAs.
  • Step S1202 The AP sends PPDUs to multiple STAs.
  • the station receiving the PPDU may parse the data field of the PPDU according to the first field. Specifically, the station receiving the PPDU can determine which RU the data of the STA is carried in according to the first field. Further, the STA can receive and parse the data of the STA on the corresponding RU.
  • segment when 80 MHz is used as a segment unit, segment is understood as “segments (Segs)" in the 802.11ax / ac standard.
  • Segments When a bandwidth unit of 160 MHz or more is used as a segment unit, a segment is a partial part, and the segment includes at least one of the segments.
  • the PPDU includes a preamble and a data field part, where the preamble part includes: M first fields (the first field can be understood as the EHT-SIG- B can also be understood as the resource unit allocation subfield in EHT-SIG-B.
  • the first field is hereinafter referred to as the resource unit allocation subfield in EHT-SIG-B to indicate the method of resource unit.
  • the PPDU may further include M second fields (the second field may be understood as EHT-SIG-A).
  • the first field is used to indicate the RU allocated by the AP to at least one of the plurality of STAs.
  • the RU indicated by the first field is located in the segment corresponding to the first field.
  • the RU indicated by the first field is a segment combination composed of multiple segments, or the The indicated RU is a fragment combination composed of all or part of the fragments included in the multiple segments.
  • STA1 and STA2 correspond to segment 1.
  • the AP When the RU allocated to STA1 and STA2 is smaller than the maximum RU in segment 1, the AP indicates that the RU allocated to STA1 and STA2 is the segment through the first field corresponding to segment 1.
  • the first 242-tone RU on 1; for another example, STA1 and STA2 correspond to segment 2.
  • the AP passes the first field corresponding to segment 2.
  • the RUs assigned to STA3 and STA4 are segmented combined RUs composed of segment 1 and segment 2.
  • FIG. 13 is a schematic diagram of a 320 Mhz bandwidth using 80 MHz as a segment unit according to an embodiment of the present application. As shown in FIG. 13, the 320 Mhz bandwidth is divided into four segments, which are Part1, Part2, Part3, and Part4. In each segment, the AP configures the corresponding P20, S20, and S40 channels for the STAs in the segment. The entire bandwidth can be viewed as the presence of multiple (temporary) P20 channels.
  • FIG. 14 is a schematic diagram of an EHT-SIG-B using 80 MHz as a segment unit (including two CCs) according to an embodiment of the present application. As shown in FIG. 14, each segment includes 4 channels. , Two CCs. Among them, in Part1, CC11 carries the following information: resource unit allocation subfields (the first fields corresponding to Part1 respectively) within the scope of the first 242-tone RU and the third 242-tone RU of Part1 and the corresponding 242 -tone site-by-site information for STAs allocated within the RU range.
  • CC12 carries the following information: the resource unit allocation subfields belonging to the second and fourth 242-tone RUs in Part1 (the first field corresponding to Part1 respectively) and the STAs allocated in the corresponding 242-tone RU range Site-by-site information.
  • CC21 carries the following information: resource unit allocation subfields (the first field corresponding to Part2) in the 5th and 7th 242-tone RUs of Part2 and the corresponding 242-tone RUs Site-to-site information for STAs.
  • CC22 carries the following information: resource unit allocation subfields (the first field corresponding to Part2) within the 6th and 8th 242-tone RUs of Seg2 and site-by-site of STAs allocated within the corresponding 242-tone RUs information.
  • CC31 carries the following information: the resource unit allocation subfield (the first field corresponding to Part3) in the 9th and 11th 242-tone RUs belonging to Seg3 and the corresponding 242-tone RUs allocated in the range Site-to-site information for STAs.
  • CC32 carries the following information: the resource unit allocation subfield (the first field corresponding to Part3) within the 10th and 12th 242-tone RUs of Seg3 and the site-by-site of the STAs allocated within the corresponding 242-tone RUs information.
  • CC41 carries the following information: the resource unit allocation subfield (the first field corresponding to Part4) within the 13th and 15th 242-tone RUs of Seg4 and the corresponding 242-tone RUs allocated in the range Site-to-site information for STAs.
  • CC42 carries the following information: the resource unit allocation subfield (the first field corresponding to Part4) in the 14th and 16th 242-tone RUs of Seg4 and the site-by-site of the STAs allocated in the corresponding 242-tone RUs information.
  • the first 242-tone RU to the 16th 242-tone RU described above are for the entire bandwidth of the PPDU.
  • FIG. 14 includes two CCs. In fact, four CCs may also be used.
  • FIG. 15 is a segment unit (including four CCs) provided at 80 MHz provided by an embodiment of the present application. Schematic of EHT-SIG-B. As shown in FIG. 15, at this time, only one resource unit allocation subfield within a 242-tone RU range needs to be indicated in each CC, thereby further reducing overhead.
  • the resource unit allocation subfield when the RU allocated to the STA is less than or equal to 996-tone RU (that is, the segment unit is the largest RU in 80MHz), the resource unit subfield shown in Table 2 above may be used for resource indication .
  • the resource indication can be performed in any of the following ways:
  • a Reserved field is used to indicate some or all of the segmented combined RUs.
  • the correspondence between the resource unit allocation subfield and the segmented combined RU includes at least one entry as shown in Table 3:
  • Part1, Part2, Part3, and Part4 are the four different segments.
  • the lengths of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, and eleventh values Both are 8 bits. That is, the resource unit allocation subfield may be 8 bits.
  • the mapping relationship between the resource unit allocation subfield and the segment combination can be transformed, and is not limited to the cases listed in the embodiments of the present application. For example, it can also be: when the resource unit allocation subfield is For the first value, the segment combination is the combination of Part1 and Part3; when the resource unit allocation subfield is the second value, the segment combination is the combination of Part1 and Part2. It can be understood that other alternative situations are also within the protection scope of the embodiments of the present application.
  • the segment identifier used in the table is the logical identifier of the segment. Generally, the segment identifier 1 (Part1) refers to the lowest frequency 80MHz channel containing the main 20MHz channel, and the segment identifier 2 (Part2) refers to the neighbor Part1.
  • the segment identifier 3 refers to the higher-frequency 80MHz channel of the neighbor Part2; and the segment identifier 4 (Part4) refers to the highest frequency 80MHz channel for the neighbor Part3.
  • Part3 refers to the higher-frequency 80MHz channel of the neighbor Part2; and the segment identifier 4 (Part4) refers to the highest frequency 80MHz channel for the neighbor Part3.
  • Part4 refers to the highest frequency 80MHz channel for the neighbor Part3.
  • the above table is exhaustive of all possible combinations of the four segments. In practical applications, it may only include a part of the combinations mentioned in the above table.
  • the resource unit allocation subfield may be a combination of consecutive segments in the frequency domain. For example, it can only include 6 of the above 11 combinations, which are: Part1 + Part2, Part2 + Part3, Part3 + Part4, Part1 + Part2 + Part3, Part2 + Part3 + Part4, Part1 + Part2 + Part3 + Part4.
  • the value of the resource unit allocation subfield may be 01110100.
  • the resource unit allocation subfield is used to indicate the RU allocated for at least one STA.
  • the EHT-SIG-B may further include indication information, which is used to indicate the number of the at least one STA, that is, The number of STAs performing data transmission on the RU indicated by the resource unit allocation subfield.
  • the indication manner of the indication information includes the following two cases:
  • each CC it includes carries the same indication information, and the indication information is used to indicate that data transmission is performed on the segment combination RU indicated by the resource unit allocation subfield.
  • the number of STAs The number of STAs.
  • each CC For one segment, multiple CCs are carried on the segment, each CC carries different indication information, and the number of STAs indicated by the indication information on each CC is performed on the segment combination RU A part of the number of STAs for data transmission.
  • Each CC includes the information fields of this part of STAs.
  • the segment includes CC1 and CC2, where CC1 can carry the first indication information, CC2 carries the second indication information, and the first indication information and the second indication information jointly indicate the combination of the segments indicated in the resource unit allocation subfield.
  • the number of STAs performing data transmission on the RU may be, for example, the sum of the number of STAs indicated by the first indication information and the number of STAs indicated by the second indication information.
  • CC1 includes user information fields of 3 of the 5 STAs
  • the number of STAs indicated by the first indication information is 3
  • CC2 includes In addition to the above 3 STAs, the user information fields of the other 2 STAs, and the number of STAs indicated by the second indication information is 2, so the number of STAs jointly indicated by the first indication information and the second indication information is 5.
  • the RU indicated by the resource unit allocation subfield includes a combination of Part1 and Part2 (Part1 + Part2) as an example.
  • FIG. 16 is a schematic diagram of a segmented combination-based EHT-SIG-B provided by an embodiment of the present application, as shown in FIG. As shown in FIG. 16, the EHT-SIG-B includes: a resource unit subfield for indicating the segment combination Part1 + Part2 and indication information, and the indication information is used for indicating the number of STAs that perform data transmission through Part1 + Part2.
  • the indication manner of the indication information may adopt the foregoing two manners, and details are not described herein again.
  • the EHT-SIG-B already includes: a resource unit subfield for indicating the segment combination Part1 + Part2, the resource unit allocation subfields for the second, third, and fourth 242-tone RUs (Figure It is indicated by a dashed box in the middle) It is not necessary to repeatedly indicate the segment combination Part1 + Part2.
  • the resource unit allocation subfields of the second, third, and fourth 242-tone RUs can also repeatedly indicate the segment combination Part1 + Part2, that is, the selection of the two resource unit subfields on CC11 The values are the same, and the RUs indicated are Part1 + Part2, which is not limited in this application.
  • the middle 26-tone RU does not exist at this time, so it can be set to 0, indicating that the 26-tone RU has not been individually assigned to any STA.
  • each CC in the existing 802.11ax includes 8 resource unit allocation subfields in the range of 242-tone RU.
  • each CC includes only two resource unit allocation subfields in the 242-tone RU range. Therefore, compared with the indication method in 802.11ax, the resource overhead provided by this application is reduced to a quarter. One.
  • the resource unit allocation subfield is used to indicate the number of STAs (number of users) for data transmission on the segmented combined RU, in addition to indicating the segmented combined RU.
  • the correspondence between the resource unit allocation subfield and the number of segmented combinations RU and the number of STAs transmitting data on the segmented combination includes at least one of the following entries, as shown in Table 5:
  • Part1, Part2, Part3, and Part4 are the four different segments.
  • the lengths of the first value to the eighty-eighth value are all 9 bits. That is, the resource unit allocation subfield may be 9 bits.
  • the values of the first quantity, the second quantity, the third quantity, the fourth quantity, the fifth quantity, the sixth quantity, the seventh quantity, and the eighth quantity in Table 5 are greater than or equal to 1 and less than or equal to 8.
  • An integer for example, the first quantity can be set to 1.
  • the mapping relationship shown in the above Table 5 only shows all corresponding relationships.
  • mapping relationship between the resource unit allocation subfield and the segment combination and the number of STAs can be changed, and is not limited to the situations listed in the embodiments of the present application. For example, it can also be: when the resource unit allocation subfield is When it is the first value, the segment combination is the combination of Part1 and Part3, and the number of users is the first number; when the resource unit allocation subfield is the second value, the segment combination is the combination of Part1 and Part2, and the number of users is First quantity. It can be understood that other alternative situations are also within the protection scope of the embodiments of the present application.
  • the segment identifier used in the table is the logical identifier of the segment.
  • the segment identifier 1 refers to the lowest frequency 80MHz channel containing the main 20MHz channel
  • the segment identifier 2 refers to the neighbor Part1.
  • the segment identifier 3 refers to the higher-frequency 80MHz channel of the neighbor Part2
  • the segment identifier 4 refers to the highest frequency 80MHz channel for the neighbor Part3.
  • the resource unit allocation subfield may be a combination of consecutive segments in the frequency domain. For example, it can only include 6 of the above 11 combinations, which are: Part1 + Part2, Part2 + Part3, Part3 + Part4, Part1 + Part2 + Part3, Part2 + Part3 + Part4, Part1 + Part2 + Part3 + Part4.
  • x 4 x 3 x 2 x 1 x 0 is the permutation combination of 0 and 1.
  • the value of x 4 x 3 x 2 x 1 x 0 can be any of 32 combinations (00000 to 11111), for example : X 4 x 3 x 2 x 1 x 0 is 0000.
  • x 7 x 6 x 5 x 4 x 3 x 2 x 1 x 0 is the permutation and combination of 0 and 1.
  • x 7 x 6 x 5 x 4 x 3 x 2 x 1 0 can be 256 combinations. (00000000 to 11111111), for example: x 7 x 6 x 5 x 4 x 3 x 2 x 1 x 0 is 00000000.
  • the resource unit allocation subfield may be extended from 8 bits to 9 bits (0 or 1 in parentheses in Table 6 indicates that 1 bit is added).
  • the resource unit allocation subfield is 9 bits, the It can correspond to all correspondences listed in Table 6.
  • the number of users who perform data transmission in this segment combination can be further expanded to more than 8 users, such as 16 users.
  • the segment combination includes: a segment corresponding to a resource unit allocation subfield.
  • the segment combination can be Part1 + Part2, Part1 + Part3, Part1 + Part4, Part1 + Part2 + Part3, and so on. Therefore, different resource indication methods can be designed for different segments.
  • the combination of segments indicated by the resource unit allocation subfield includes the segment corresponding to the resource unit allocation subfield, which can further reduce resource overhead.
  • Part1, Part2, Part3, and Part4 are the four different segments.
  • the length of the ninth value and the tenth value are both 9 bits. That is, the resource unit allocation subfield may be 9 bits.
  • the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, tenth The value of a quantity is an integer greater than or equal to 1 and less than or equal to 8.
  • the first quantity may be 1.
  • the mapping relationship shown in the above Table 7 only shows a partial correspondence relationship.
  • Table 7 may be extended, for example, the eleventh value, the corresponding segment combination, and The number of users is: Part1 + Part2, the eleventh number, which can be two.
  • each CC in the existing 802.11ax includes 8 resource unit allocation subfields in the range of 242-tone RU.
  • each CC since the AP targets segmentation, For resource indication, each CC includes only two resource unit allocation subfields in the 242-tone RU range. Therefore, compared with the indication method in 802.11ax, the resource overhead provided by this application is reduced to a quarter.
  • the combination of segments indicated by the resource unit allocation subfield includes a segment corresponding to the resource unit allocation subfield, this can further reduce resource overhead.
  • the third method indicates the combination of segments in a compressed mode.
  • the PPDU includes: EHT-SIG-A corresponding to each segment and EHT-SIG-B corresponding to each segment.
  • the EHT-SIG-A carries Indication information indicating that the segment to which it belongs adopts a compression mode.
  • the EHT-SIG-B includes: a resource unit allocation subfield, which is used to indicate a segment combination.
  • FIG. 17 is a schematic diagram of a segmented combination-based EHT-SIG-B provided by an embodiment of the present application. As shown in FIG. 17, the EHT-SIG-B includes both CC1 and CC2. : Resource unit allocation subfield, which is used to indicate a segment combination.
  • the EHT-SIG-B on CC1 and CC2 further includes: indication information, which is used to indicate the number of STAs that perform data transmission in the segment combination.
  • indication information which is used to indicate the number of STAs that perform data transmission in the segment combination.
  • the EHT-SIG-B on CC1 and CC2 respectively includes: first indication information and second indication information, and the first indication information and the second indication information are used to jointly instruct the STAs that perform data transmission in the segment combination. Quantity.
  • the resource unit allocation subfield is shown in Table 9, and indicates some or all possible segment combinations.
  • the above indication information may also be included.
  • the indication information may also be integrated with the resource unit allocation subfield to implement unified indication.
  • the entire segment represents the entire segment allocated by the STA and is allocated to the STA as one RU.
  • Part1, Part2, Part3, and Part4 are the four different segments.
  • Each of the ninth value and the twelfth value has a length of 8 bits. That is, the resource unit allocation subfield may be 8 bits.
  • the resource overhead can be reduced. Further, in this mode, an indication method for segmented combination is also designed.
  • FIG. 18 is a schematic diagram of a 320Mhz bandwidth with 160MHz as a segment unit according to an embodiment of the present application.
  • the 320Mhz bandwidth is divided into two segments, namely, Part1 and Part2.
  • each segment includes: two segments (with 80MHz as the fragment unit), and in each segment, the corresponding P20, S20, S40, and S80 channels are configured for the STA of the segment.
  • the entire bandwidth can be seen as the existence of two (temporary) P20 channels.
  • Each segment includes 2 CCs or 4 CCs.
  • each segment in FIG. 19 includes 2 CCs
  • each segment in FIG. 20 includes 4 CCs.
  • FIG. 19 is an EHT- A schematic diagram of SIG-B.
  • FIG. 20 is a schematic diagram of EHT-SIG-B with 160 MHz as a segment unit (four CCs) according to an embodiment of the present application.
  • the resource unit allocation subfield when the size of the RU allocated to the STA is less than or equal to 2 * 996-tone (that is, the segmented unit is the largest RU in 160MHz), the corresponding entry shown in Table 2 is used to indicate the resource unit indication method, Need to supplement 2 * 996-tone RU instructions, see Table 11 for details:
  • the resource indication can be performed in any of the following ways.
  • a reserved field is used to indicate some or all of the fragment combinations. Specifically, when the RU indicated by the resource unit allocation subfield is a fragment combination, the resource unit allocation subfield and the fragment combination RU The corresponding relationship includes at least one entry as shown in Table 12:
  • Seg1, Seg2, Seg3, and Seg4 are the four different segments.
  • the lengths of the first value, the second value, the third value, the fourth value, and the fifth value are all 8 bits. That is, the resource unit allocation subfield may be 8 bits.
  • mapping relationship between the resource unit allocation subfield and the fragment combination can be transformed, and is not limited to the cases listed in the embodiments of the present application.
  • the fragmentation combination is a combination of Seg1, Seg2, and Seg4
  • the fragmentation combination is a combination of Seg1, Seg2, and Seg3.
  • the segment identifier used in the table is the logical identifier of the segment.
  • the segment identifier 1 (Seg1) refers to the 80MHz channel with the lowest frequency containing the main 20MHz channel
  • the segment identifier 2 (Seg2) refers to the neighbor Seg1.
  • the segment identifier 3 (Seg3) refers to the 80MHz channel with the higher frequency of the neighboring Seg2
  • the segment identifier 4 (Seg4) refers to the 80MHz channel with the highest frequency to the neighboring Seg3.
  • the above description is a common mapping relationship between the segment identifier and the channel. There are other mapping relationships between the segment identifier and the channel, which is not limited in this application.
  • the above table is exhaustive of all possible combinations of the 4 shards. In practical applications, it may only include a part of all possible combinations in the above table.
  • the resource unit allocation subfield may be a combination of consecutive slices in the frequency domain. For example, it may include only two of the above five combinations, which are: Seg1 + Seg2 + Seg3, Seg1 + Seg2 + Seg4.
  • the resource unit allocation subfield is used to indicate the RU allocated for at least one STA.
  • the EHT-SIG-B may further include indication information, which is used to indicate the number of the at least one STA, that is The number of STAs (number of users) performing data transmission on the RU indicated by the resource unit allocation subfield.
  • the carrying manner of the indication information includes the following two cases:
  • each CC included in it carries indication information, and the indication information is used to indicate the STA of the STA that performs data transmission on the slice combination RU indicated by the resource unit allocation subfield. Quantity.
  • the second case For a fragment, it is assumed that it includes CC1 and CC2, where CC1 can carry the first indication information, CC2 carries the second indication information, and the first indication information and the second indication information jointly indicate allocation in the resource unit.
  • the number of STAs performing data transmission on the slice combination RU indicated by the subfield may be, for example, the sum of the number of STAs indicated by the first indication information and the number of STAs indicated by the second indication information.
  • the RU indicated by the resource unit allocation subfield includes a combination of Seg1 + Seg2 as an example for illustration.
  • FIG. 21 is a schematic diagram of a segment combination-based EHT-SIG-B according to an embodiment of the present application.
  • the EHT-SIG-B includes: a resource unit allocator for indicating the segment combination Seg1 + Seg2 Field and indication information, the indication information is used to indicate the number of STAs that perform data transmission through Seg1 + Seg2.
  • the EHT-SIG-B already includes: a resource unit subfield for indicating the slice combination Seg1 + Seg2, for the second, third, fourth, fifth, sixth, seventh, and eightth 242-tone RU
  • the resource unit allocation subfield (indicated by a dashed box in the figure) does not need to repeatedly indicate the segment combination Seg1 + Seg2.
  • the resource unit allocation subfields of the 2nd, 3rd, 4th, 5th, 6th, 7th, and 8th 242-tone RUs can also repeatedly indicate the segment combination Seg1 + Seg2, which is not done in this application. limit.
  • the middle 26-tone RU does not exist at this time, so it can be set to 0, indicating that the 26-tone RU has not been individually assigned to any STA.
  • each CC in the existing 802.11ax includes 8 resource unit allocation subfields in the range of 242-tone RU.
  • each CC includes only four resource unit allocation subfields in the range of 242-tone RU. Therefore, compared with the indication method in 802.11ax, the resource overhead provided by this application is reduced by half. One.
  • the resource unit allocation subfield is used to indicate the number of STAs that perform data transmission on the slice combination RU in addition to indicating the slice combination RU.
  • the correspondence between the resource unit allocation subfield and the number of RUs and the number of STAs transmitting data on the shard combination includes at least one of the following entries, as shown in Table 14:
  • Seg1, Seg2, Seg3, and Seg4 are the four different segments.
  • the lengths of the first value, the second value, the third value, the fourth value, and the fifth value are all 9 bits. That is, the resource unit allocation subfield may be 9 bits.
  • the values of the first quantity, the second quantity, the third quantity, the fourth quantity, and the fifth quantity in Table 14 are an integer greater than or equal to 1 and less than or equal to 8.
  • the first quantity may be 1.
  • the mapping relationship shown in the above Table 14 only shows a partial correspondence relationship.
  • Table 14 may be extended, for example, including the sixth value, the corresponding fragment combination, and STA.
  • the number is: Seg1 + Seg2 + Seg3, the sixth number, and the sixth number may be two.
  • mapping relationship between the resource unit allocation subfield and the fragment combination and the number of STAs can be changed, and is not limited to the situations listed in the embodiments of the present application. For example, it can also be: when the resource unit allocation subfield is When the number is the first value, the number of shards is Seg1, Seg3, and Seg4, and the number of STAs is the seventh number. When the resource unit allocation subfield is the second value, the number of shards is Seg1, Seg2, and Seg3. , And the number of STAs is the eighth number. It can be understood that other alternative situations are also within the protection scope of the embodiments of the present application.
  • the segment identifier used in the table is the logical identifier of the segment.
  • the segment identifier 1 (Seg1) refers to the 80MHz channel with the lowest frequency containing the main 20MHz channel
  • the segment identifier 2 (Seg2) refers to the neighbor Seg1.
  • the segment identifier 3 (Seg3) refers to the 80MHz channel with the higher frequency of the neighboring Seg2
  • the segment identifier 4 (Seg4) refers to the 80MHz channel with the highest frequency to the neighboring Seg3.
  • the above description is a common mapping relationship between the segment identifier and the channel. There are other mapping relationships between the segment identifier and the channel, which is not limited in this application.
  • the above table is an exhaustive list of the possible combinations of 4 fragments. In practical applications, it may only include a part of all possible combinations mentioned in the above table or the correspondence relationship other than Table 14.
  • the resource unit allocation subfield may be a combination of consecutive slices in the frequency domain. For example, it may include only two of the above five combinations, which are: Seg1 + Seg2 + Seg3, Seg1 + Seg2 + Seg3 + Seg4.
  • the resource unit allocation subfield can be extended from 8 bits to 9 bits (0 or 1 in parentheses in Table 15 indicates that 1 bit is added).
  • the resource unit allocation subfield is 9 bits, its It can correspond to all correspondences listed in Table 15. Further, the number of users who perform data transmission in this fragment combination can be further expanded to more than 8 users, such as 16 users.
  • the fragment combination includes: a fragment corresponding to a resource unit allocation subfield.
  • the segment corresponding to the resource unit allocation subfield is Seg1
  • the combination of the fragments indicated by the resource unit allocation subfield will not be Seg2 + Seg3 + Seg4, and the STA located in Seg4 will not be allocated to Seg1 + Seg2 + Seg3 . Therefore, different tables can be designed for different fragments.
  • the combination of fragments indicated by the resource unit allocation subfield includes the fragments corresponding to the resource unit allocation subfield, which can further reduce the resource overhead.
  • Seg1, Seg2, Seg3, and Seg4 are the four different segments.
  • the lengths of the first value, the second value, the third value, the fourth value, and the fifth value are all 9 bits. That is, the resource unit allocation subfield may be 9 bits.
  • the values of the first quantity, the second quantity, the third quantity, the fourth quantity, and the fifth quantity in Table 16 are an integer greater than or equal to 1 and less than or equal to 8.
  • the first quantity can be set to 1.
  • the mapping relationship shown in Table 16 above only shows partial correspondences.
  • Table 16 can also be extended, for example, including the sixth value, the corresponding fragment combination, and STA.
  • the number is: Seg1 + Seg2 + Seg3, the seventh number, and the seventh number may be two.
  • each CC in the existing 802.11ax includes eight resource unit allocation subfields in the range of 242-tone RU.
  • each CC includes only four resource unit allocation subfields in the range of 242-tone RU. Therefore, compared with the indication method in 802.11ax, the resource overhead provided by this application is reduced by half.
  • the fragment combination indicated by the resource unit allocation subfield includes the fragment corresponding to the resource unit allocation subfield, this can further reduce the resource overhead.
  • the third method indicates the combination of segments in a compressed mode.
  • the PPDU includes: EHT-SIG-A corresponding to each segment and EHT-SIG-B corresponding to each segment.
  • the EHT-SIG-A carries an instruction.
  • the EHT-SIG-B includes: a resource unit allocation subfield, which is used to indicate a segment combination.
  • FIG. 22 is a schematic diagram of an EHT-SIG-B based on fragment combination provided by an embodiment of the present application. As shown in FIG. 22, the EHT-SIG-B includes both CC1 and CC2. : Resource unit allocation subfield, which is used to indicate the shard combination.
  • the EHT-SIG-B on CC1 and CC2 further includes: indication information, where the indication information is used to indicate the number of STAs that perform data transmission in the fragment combination.
  • the EHT-SIG-B on CC1 and CC2 respectively includes: first indication information and second indication information, where the first indication information and the second indication information are used to jointly instruct the STAs that perform data transmission in the segment combination. Quantity.
  • the resource unit allocation subfield indicates some or all possible fragment combinations.
  • the above indication information may also be included.
  • the indication information may also be fused with the indication subfield of the fragment combination to achieve unified indication.
  • the all-part slice represents the entire slice allocated by the STA as one RU and is allocated to the STA.
  • Seg1, Seg2, Seg3, and Seg4 are the four different segments.
  • the lengths of the first value, the second value, the third value, the fourth value, the fifth value, and the sixth value are all 8 bits. That is, the resource unit allocation subfield may be 8 bits.
  • the resource overhead can be reduced. Further, in this mode, an indication method for the fragment combination is also designed.
  • the PPDU includes the EHT-SIG-A corresponding to each segment (that is, the second field in the first and second embodiments, or, for the case where the segment includes multiple CCs, the EHT-SIG -A includes the second field) and EHT-SIG-B corresponding to each segment (that is, the first field in the first embodiment and the second embodiment below, or, for the case where the segment includes multiple CCs, the EHT- SIG-B includes the first field), taking the second field as EHT-SIG-A and the first field as EHT-SIG-B, for example, M EHT-SIG-A and M EHT-SIG-B
  • the EHT-SIG-A includes at least one of the following information: the number of EHT-SIG-B symbols corresponding to the EHT-SIG-A, the MCS of the EHT-SIG-B, and the compression mode of the EHT-SIG-B ,
  • FIG. 23 is a schematic diagram of EHT-SIG-A on a slice according to an embodiment of the present application.
  • the entire transmission bandwidth of the PPDU is divided into M segments in units of 80 MHz or 160 Mhz.
  • the AP sends EHT-SIG-A with the same content or different content in each segment.
  • the EHT-SIG-A of each segment can indicate different content, for example:
  • EHT-SIG-B MCS of EHT-SIG-B different EHT-SIG-B MCS can be set according to the number of information in each segment EHT-SIG-B, the quality of the channel.
  • Basic service set color The ID of the basic service set where the AP is located. Different segments can be regarded as different basic service sets and can indicate different basic service set colors.
  • EHT-SIG-B compression mode Set the compression mode according to whether the EHT-SIG-B at each end is a segmented combination or a fragmented combination or occupies the entire segment.
  • EHT-SIG-B symbols Ensure that the EHT-SIG-B of each part is aligned.
  • PPDU bandwidth indicates the bandwidth of the entire PPDU uniformly.
  • Guard interval and long training sequence size Set to the same value to ensure that the guard interval of each segment's EHT-LTF is aligned with the long training sequence, and to ensure symbol-level alignment.
  • the present application provides a resource unit indication method, including M EHT-SIG-A, using the EHT-SIG-A to instruct and transmit each segment, and supporting data transmission according to the segment.
  • This method is suitable for The STA supports the case of maximum bandwidth and small capacity.
  • the first embodiment provides a resource unit indication method based on DL OFDMA and DL MU and MIMO.
  • Embodiment 3 will provide a resource unit indication method based on a trigger frame.
  • FIG. 24 is a flowchart of a resource unit indication method according to an embodiment of the present application. As shown in FIG. 24, the method includes the following steps:
  • Step S2401 The AP generates a PPDU.
  • the PPDU includes M trigger frames, where M is an integer greater than 1.
  • the M trigger frames include at least two broadcast trigger frames, and the transmission bandwidth of the PPDU is divided into M segments. The transmission bandwidth is greater than or equal to 40MHz.
  • M trigger frames correspond to M segments one by one.
  • the trigger frame includes: a first field, which is transmitted on the segment corresponding to the trigger frame. The first field is used to indicate that the AP is An RU allocated by at least one STA in the plurality of STAs.
  • Step S2402 The AP sends PPDUs to multiple STAs.
  • the station receiving the PPDU may perform uplink data transmission according to the first field. Specifically, the station receiving the PPDU can determine in which RU the STA can send uplink data according to the first field. Further, the STA can send uplink data to the AP on the corresponding RU.
  • the transmission bandwidth of the PPDU can be divided into a number of segments with 80 MHz as a segment unit.
  • Each trigger frame is used to trigger the STA to perform uplink transmission.
  • the resource unit allocation subfield (which can be understood as the first field in this embodiment) on each segment indicates the resource unit allocation status separately for the STA to which it belongs.
  • FIG. 25 is a schematic diagram of common fields and site-by-site fields included in four trigger frames with 80 MHz as a segment unit according to an embodiment of the present application, as shown in FIG. 25, where each trigger frame includes a common field and Site-by-site field.
  • the common fields include: uplink space-time block coding, AP transmit power, PPDU extension, uplink spatial multiplexing, and uplink HE-SIG-A reservation.
  • the site-by-site fields include fields such as association ID, resource unit allocation subfield, uplink coding type, uplink dual carrier modulation, spatial stream number / random contention resource unit information, received signal strength indication, and site information based on the trigger frame type.
  • the AP can transmit trigger frames in the following ways:
  • Method 1 Use HE or EHT MU PPDU, that is, use different RUs to transmit trigger frames in different segments.
  • Method 2 The FDMA method is used to transmit respective PPDUs in different segments, where each PPDU carries a trigger frame of a corresponding fragment.
  • the resource unit subfield shown in Table 2 above is used for resource indication. .
  • the RU indicated by the resource unit allocation subfield is greater than the maximum RU included in the segment corresponding to the resource unit allocation subfield
  • the RU indicated by the resource unit allocation subfield is a plurality of the segments.
  • the segment combination that is formed, or the RU indicated by the resource unit allocation subfield is a segment combination composed of all or part of the segments included in the multiple segments.
  • the RU indicated by the resource unit allocation subfield is a segmented combination (in the case of 80 MHz as the division unit, the segmented combination is also referred to as a fragmented combination)
  • a segment includes two 80MHz segments.
  • the corresponding relationship between the resource unit allocation subfield and the segment combination includes at least one of the following entries as shown in Table 20:
  • Part1, Part2, Part3, and Part4 are the four different segments.
  • the lengths of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, and eleventh values Both are 8 bits. That is, the first field may be 8 bits.
  • the mapping relationship between the resource unit allocation subfield and the segment combination can be transformed, and is not limited to the cases listed in the embodiments of the present application. For example, it can also be: when the resource unit allocation subfield is For the first value, the segment combination is the combination of Part1 and Part3; when the resource unit allocation subfield is the second value, the segment combination is the combination of Part1 and Part2. It can be understood that other alternative situations are also within the protection scope of the embodiments of the present application.
  • the segment identifier used in the table is the logical identifier of the segment. Generally, the segment identifier 1 (Part1) refers to the lowest frequency 80MHz channel containing the main 20MHz channel, and the segment identifier 2 (Part2) refers to the neighbor Part1.
  • the segment identifier 3 refers to the higher-frequency 80MHz channel of the neighbor Part2; and the segment identifier 4 (Part4) refers to the highest frequency 80MHz channel for the neighbor Part3.
  • Part3 refers to the higher-frequency 80MHz channel of the neighbor Part2; and the segment identifier 4 (Part4) refers to the highest frequency 80MHz channel for the neighbor Part3.
  • Part4 refers to the highest frequency 80MHz channel for the neighbor Part3.
  • the above table is exhaustive of all possible combinations of the four segments. In practical applications, it may only include a part of the combinations mentioned in the above table.
  • the resource unit allocation subfield may be a combination of consecutive segments in the frequency domain. For example, it can only include 6 of the above 11 combinations, which are: Part1 + Part2, Part2 + Part3, Part3 + Part4, Part1 + Part2 + Part3, Part2 + Part3 + Part4, Part1 + Part2 + Part3 + Part4.
  • the embodiment of the present application further provides a correspondence between a resource unit allocation subfield and a segmented combined RU.
  • An example is shown in Table 21:
  • each segment only needs to indicate the resource unit allocation of the segment to which it belongs, there is no need to indicate which 80MHz it is. Therefore, it is not necessary to transmit an additional bit or set the bit as a reserved bit for subsequent use.
  • the trigger frame overhead in this application is reduced to a quarter compared with the prior art under the same bandwidth. Further, the trigger frame in the present application may further indicate a segment combination across segments.
  • the RU indicated by the resource unit allocation subfield is a fragment combination.
  • the corresponding relationship between the resource unit allocation subfield and the fragment combination includes at least one of the following entries shown in Table 22. :
  • Seg1, Seg2, Seg3, and Seg4 are the four different segments.
  • the lengths of the first value, the second value, the third value, the fourth value, and the fifth value are all 8 bits. That is, the resource unit allocation subfield may be 8 bits.
  • mapping relationship between the resource unit allocation subfield and the fragment combination can be transformed, and is not limited to the cases listed in the embodiments of the present application. For example, it can also be: when the resource unit allocation subfield is For the first value, the combination of the fragments is Seg1, Seg2, and Seg4; when the resource unit allocation subfield is the second value, the combination of the fragments is Seg1, Seg2, and Seg3. It can be understood that other alternative situations are also within the protection scope of the embodiments of the present application.
  • the above table is an exhaustive list of some or all possible combinations of the four fragments. In practical applications, it may only include a part of the combinations mentioned in the above table.
  • the resource unit allocation subfield indicates a combination of continuous frequency domain fragments. For example, it may include only two of the above five combinations, which are: Seg1 + Seg2 + Seg3, Seg1 + Seg2 + Seg3 + Seg4.
  • the embodiment of the present application further provides a correspondence between a resource allocation subfield and a fragmentation combination RU.
  • An example is shown in Table 23:
  • the trigger frame further includes: a second field; when the second field is the first value , The RU indicated by the first field belongs to the main 80MHz in the segment corresponding to the trigger frame, and when the second field is the second value, the second value is used to indicate that the RU belongs to the sub-point corresponding to the trigger frame In the segment from 80MHz.
  • the first value is used to indicate that the RU belongs to a low frequency 80 MHz in a segment corresponding to the trigger frame; when the second field is a second value, all The second value is used to indicate that the RU belongs to a high-frequency 80 MHz in a segment corresponding to the trigger frame.
  • the trigger frame overhead in this application is reduced to one-half compared with the prior art under the same bandwidth.
  • the trigger frame in the present application may further indicate a segment combination across segments.
  • the RU indicated by the AP is not limited to the segment to which it belongs, but may be further extended to the entire bandwidth.
  • two bits are further introduced to indicate which one of the 320 MHz is 80 MHz.
  • the trigger frame further includes: a third field; the third field may include 2 bits.
  • the first value is used to indicate that the RU belongs to the lowest frequency of 80 MHz in the transmission bandwidth; when the third field is the second value, and the When the RU is less than or equal to 996-tone RU, the second value is used to indicate that the RU belongs to the sub-low frequency 80MHz in the transmission bandwidth; when the third field is the third value and the RU is less than or equal to 996-tone RU, the third The value is used to indicate that the RU belongs to the sub-high frequency 80MHz in the transmission bandwidth.
  • the fourth value is used to indicate that the RU belongs to the most in the transmission bandwidth. High frequency 80MHz.
  • the first value is used to indicate that the RU belongs to the main 80MHz in the transmission bandwidth; when the third field is the second value and the RU When it is less than or equal to 996-tone RU, the second value is used to indicate that the RU belongs to the first slave 80MHz in the transmission bandwidth; when the third field is the third value and the RU is less than or equal to 996-tone RU, the third The value is used to indicate that the RU belongs to the second slave 80MHz in the transmission bandwidth.
  • the third field is the fourth value and the RU is less than or equal to 996-tone
  • the fourth value is used to indicate that the RU belongs to the first in the transmission bandwidth. Three from 80MHz.
  • the lengths of the first value, the second value, the third value, and the fourth value are all 2 bits.
  • Table 24 is an example of the meaning represented by the third field.
  • the STA may determine which 80MHz channel the trigger frame is carried on according to the third field, and determine the RU allocated by the AP to itself according to the first field carried in the trigger frame. And uplink data transmission is performed on the RU.
  • each site only adds 1 bit, and a more flexible resource unit indication method is implemented.
  • FIG. 26 is A schematic diagram of transmitting an EHT PPDU on a partial segment is provided in an embodiment of the application. As shown in FIG. 26, no data is transmitted in segment 2. This situation is applicable to the situation where there is interference in some slices, and based on this, the channel resources can be fully utilized.
  • non-EHT data is transmitted in partial segments.
  • FIG. 27 is a schematic diagram of transmitting non-EHT PPDUs in partial segments according to an embodiment of the present application, as shown in FIG. 27.
  • the AP is located at the main 20 MHz.
  • HEPDUs are transmitted in segments, while EHTPPDUs are transmitted in other segments.
  • the present application can realize the flexibility of data transmission through these two examples.
  • FIG. 28 shows a schematic block diagram of an apparatus 2800 on an access point side according to an embodiment of the present application.
  • the device 2800 shown in FIG. 28 may correspond to the device of the access point in the foregoing method embodiment, and may have the function of the access point involved in the method.
  • the device of the embodiment of the present application The 2800 can be an access point or a chip inside the access point.
  • the device 2800 may include a processing module 2810 and a transceiver module 2820.
  • the device 2800 may further include a storage module 2830.
  • processing module 2810 may be configured to generate the signaling or data information sent in the foregoing method embodiment, for example, to perform steps S1201 and S2301.
  • the transceiver module 2820 is configured to support communication between an access point AP and a station, and other nodes. It can be understood that the transceiver module may include a receiving module and a sending module. The sending module may be configured to perform steps S1202 and S2402 in the foregoing method embodiments.
  • the device 2800 may correspond to an access point in each method of the foregoing embodiment, and the above and other management operations and / or functions of each module in the device 2800 are respectively for implementing the foregoing methods. The corresponding steps are not repeated here for brevity.
  • the device 2800 may be configured as a general-purpose processing system, such as a chip, and the processing module 2810 may include: one or more processors providing processing functions; the transceiver module 2820 may be, for example, an input / output interface, Pins or circuits, etc., the input / output interface can be used for the information interaction between this chip system and the outside world. For example, this input / output interface can output the signaling or data information generated by the processing module 2810 to other modules outside this chip. deal with.
  • the processing module may execute computer execution instructions stored in the storage module to implement the functions of the access point in the foregoing method embodiments.
  • the optional storage module 2830 included in the device 2800 may be a storage unit in a chip, such as a register, a cache, etc.
  • the storage module 2830 may also be a storage unit located outside the chip, such as a read-only memory ( read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM).
  • ROM read-only memory
  • RAM random access memory
  • FIG. 29 shows a schematic block diagram of a communication device 2900 on the access point side according to an embodiment of the present application.
  • the device 2900 in this embodiment of the present application may be an access point in the foregoing method embodiment, and the device 2900 may be used to perform some or all functions of the access point in the foregoing method embodiment.
  • the device 2900 may include a processor 2910, a baseband circuit 2930, a radio frequency circuit 2940, and an antenna 2950.
  • the device 2900 may further include a memory 2920.
  • the various components of the device 2900 are coupled together by a bus 2960.
  • the bus system 2960 includes a power bus, a control bus, and a status signal bus in addition to a data bus. However, for the sake of clarity, various buses are marked as the bus system 2960 in the figure.
  • the processor 2910 may be configured to implement control on the access point, and is configured to execute the processing performed by the access point in the foregoing embodiment, and may execute the processing procedure involving the access point in the foregoing method embodiment and / or used in the present application.
  • Other processes of the described technology can also run the operating system, manage the bus, and can execute programs or instructions stored in memory.
  • the baseband circuit 2930, the radio frequency circuit 2940, and the antenna 2950 can be used to support the transmission and reception of information between the access point and the site to support wireless communication between the access point and other nodes.
  • PPDUs can be processed by the processor 2910, baseband processing such as encapsulation and coding according to the protocol via the baseband circuit 2930, and further processed by the RF circuit 2940 for analog conversion, filtering, amplification, and upconversion, and then sent to the site via the antenna 2950 .
  • the baseband circuit 2930, the radio frequency circuit 2940, and the antenna 2950 can also be used to support the access point to communicate with other network entities, for example, to support the access point to communicate with network elements on the core network side.
  • the memory 2920 may be used to store program codes and data of the access point, and the memory 2920 may be a storage module 2830 in FIG. 28.
  • the memory 2920 is shown as being separate from the processor 2910 in FIG. 29, however, it will be readily apparent to those skilled in the art that the memory 2920 or any portion thereof may be located outside the device 2900.
  • the memory 2920 may include transmission lines and / or computer products separated from the wireless nodes, and these media may be accessed by the processor 2910 through the bus interface 2960.
  • the memory 2920 or any part thereof may be integrated into the processor 2910, for example, it may be a cache and / or a general-purpose register.
  • the transceiver module 2820 in FIG. 28 may include a baseband circuit 2930, a radio frequency circuit 2940, and an antenna 2950; the processing module 2810 may be a processor 2910; in another example, the transceiver module 2820 in FIG. 28 may include only FIG. 29 In the antenna, the processing module 2810 may include both the processor 2910, the radio frequency circuit 2940, and the baseband circuit 2930. In another example, the processing module 2810 in FIG. 28 may include the processor 2910, and the baseband circuit 2930; the transceiver module 2820 A radio frequency circuit 2940 and an antenna 2950 may be included.
  • FIG. 29 only shows a simplified design of the access point.
  • the access point may include any number of transmitters, receivers, processors, memories, etc., and all access points that can implement the present invention are within the protection scope of the present invention.
  • An embodiment of the present application further provides a computer storage medium.
  • the computer-readable storage medium stores instructions, and the instructions may be executed by one or more processors on a processing circuit. When running on a computer, the computer is caused to execute the methods in the above embodiments.
  • FIG. 30 is a schematic block diagram of a site-side device 3000 according to an embodiment of the present application.
  • the device 3000 shown in FIG. 30 may correspond to the device of the site in the foregoing method embodiment, and may have the functions of the site involved in the method.
  • the device 3000 in the embodiment of the present application may be a site
  • the point can also be a chip within a site point.
  • the device 3000 may include a processing module 3010 and a transceiver module 3020.
  • the device 3000 may further include a storage module 3030.
  • the transceiver module 3020 is configured to support communication between a station STA and an access point AP, and other nodes. It can be understood that the transceiver module may include a receiving module and a sending module. The receiving module may be configured to receive the PPDU sent in steps S1202 and S2402 in the foregoing method embodiment.
  • the processing module 3010 may be configured to parse the foregoing PPDU received by the receiving module according to the signaling information in the foregoing method embodiment, for example, the first field and the second field.
  • the device 3000 according to the embodiment of the present application may correspond to a site in each method of the foregoing embodiment, and the above and other management operations and / or functions of each module in the device 3000 are respectively to achieve the corresponding of the foregoing methods. The steps are not repeated here for brevity.
  • the device 3000 may also be configured as a general-purpose processing system, such as a chip, and the processing module 3010 may include: one or more processors providing processing functions; the transceiver module 3020 may be, for example, an input / output interface, Pins or circuits, etc., the input / output interface can be used for information interaction between the chip system and the outside world. For example, the input / output interface can be used to input PPDUs received from other modules outside the chip to the processing module in the chip. Proceed to process 3010.
  • the processing module can execute computer execution instructions stored in the storage module to implement the functions of the station in the foregoing method embodiments.
  • the optional storage module 3030 included in the device 3000 may be a storage unit in a chip, such as a register, a cache, etc.
  • the storage module 3030 may also be a storage unit located outside the chip, such as a read-only memory ( read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM).
  • ROM read-only memory
  • RAM random access memory
  • FIG. 31 shows a schematic block diagram of another site-side communication device 3100 according to an embodiment of the present application.
  • the device 3100 in the embodiment of the present application may be a station in the foregoing method embodiment, and the device 3100 may be configured to perform some or all functions of the station in the foregoing method embodiment.
  • the device 3100 may include a processor 3110, a baseband circuit 3130, a radio frequency circuit 3140, and an antenna 3150.
  • the device 3100 may further include a memory 3120.
  • the various components of the device 3100 are coupled together through a bus 3160.
  • the bus system 3160 includes a power bus, a control bus, and a status signal bus in addition to a data bus. However, for the sake of clarity, various buses are marked as the bus system 3160 in the figure.
  • the processor 3110 may be used to implement control of the site, for performing the processing performed by the site in the foregoing embodiment, and may execute the processing process involving the site in the foregoing method embodiment and / or other processes for the technology described in this application. , Can also run the operating system, is responsible for managing the bus and can execute programs or instructions stored in memory.
  • the baseband circuit 3130, the radio frequency circuit 3140, and the antenna 3150 can be used to support transmitting and receiving information between the station and the access point to support wireless communication between the station and other nodes.
  • the PPDU sent by the access point is received via the antenna 3150, and processed by the RF circuit 3140 for filtering, amplification, downconversion, and digitization, and then processed by the baseband circuit 3130 for decoding and decapsulating data according to the protocol.
  • 3110 performs processing to recover the service data and signaling information sent by the site.
  • the baseband circuit 3130, the radio frequency circuit 3140, and the antenna 3150 can also be used to support a station to communicate with other network entities.
  • the memory 3120 may be used to store the program code and data of the site, and the memory 3120 may be the storage module 3030 in FIG. 30.
  • the memory 3120 is shown as being separate from the processor 3110 in FIG. 31, however, it will be readily apparent to those skilled in the art that the memory 3120 or any portion thereof may be located outside the device 3100.
  • the memory 3120 may include transmission lines and / or computer products separated from the wireless nodes, and these media may be accessed by the processor 3110 through the bus interface 3160.
  • the memory 3120 or any part thereof may be integrated into the processor 3110, for example, it may be a cache and / or a general-purpose register.
  • the transceiver module 3020 in FIG. 30 may include a baseband circuit 3130, a radio frequency circuit 3140, and an antenna 3150; the processing module 3010 may be a processor 3110; in another example, the transceiver module 3020 in FIG. 30 may include only FIG. 31 In the antenna, the processing module 3010 may include both the processor 3110, the radio frequency circuit 3140, and the baseband circuit 3130. In another example, the processing module 3010 in FIG. 30 may include the processor 3110, and the baseband circuit 3130; the transceiver module 3020 A radio frequency circuit 3140 and an antenna 3150 may be included.
  • FIG. 31 only shows a simplified design of the site.
  • a station may include any number of transmitters, receivers, processors, memories, and the like, and all access points that can implement the present invention are within the protection scope of the present invention.
  • An embodiment of the present application further provides a computer storage medium.
  • the computer-readable storage medium stores instructions, and the instructions may be executed by one or more processors on a processing circuit. When running on a computer, the computer is caused to execute the methods in the above embodiments.
  • An embodiment of the present application further provides a chip system, which includes a processor, configured to support an access point to implement functions involved in the foregoing embodiments, such as generating or processing data and / or involved in the foregoing methods. information.
  • the chip system may further include a memory, and the memory is used for program instructions and data necessary for the access point.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the embodiment of the present application further provides another chip system, the chip system includes a processor, and is configured to support a site to implement functions involved in the foregoing embodiments, for example, to generate or process data and / or information involved in the foregoing methods. .
  • the chip system may further include a memory, where the memory is configured to store program instructions and data necessary for the access point.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the chip system may further include a memory, and the memory is configured to store program instructions and data necessary for the site.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the embodiments of the present application also provide a computer program product containing instructions, which when run on a computer, causes the computer to execute and execute the methods and functions related to the access point AP in any of the above embodiments.
  • the embodiment of the present application also provides a computer program product containing instructions, which when run on a computer, causes the computer to execute and execute the methods and functions related to the station STA in any of the foregoing embodiments.

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Abstract

本申请提供一种资源单元指示方法、装置及存储介质，包括：AP向多个STA发送PPDU；其中，PPDU的传输带宽被划分为M个分段，M为大于1的整数，传输带宽大于或等于80MHz，PPDU包括：M个第一字段，M个第一字段与M个分段一一对应，第一字段在对应的分段上传输，第一字段用于指示AP为多个站点STA中的至少一个STA分配的资源单元RU。从而实现了在更少的开销下支持更大带宽的数据传输。

Description

资源单元指示方法、装置及存储介质
本申请要求于2018年07月25日提交中国专利局、申请号为201810830054.9、申请名称为“资源单元指示方法、装置及存储介质”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
本申请涉及通信技术领域，尤其涉及一种资源单元指示方法、装置及存储介质。
背景技术
目前802.11ax中已经提供了下行链路(Downlink，DL)正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)及下行链路(Downlink，DL)多用户(Multiple User，MU)多输入多输出(Multiple Input Multiple Output，MIMO)的资源单元(Resource Unit，RU)指示方法。发送端发送物理层协议数据单元PPDU(Physical Protocol Data Unit)，该PPDU中包含高效信令-字段-A(High Efficient-Signal Field-A)以及高效信令-字段-B(High Efficient-Signal Field-B)，其中HE-SIG-A用于指示HE-SIG-B的符号长度，HE-SIG-B的调制编码策略(Modulation and Coding Scheme，MCS)，整个PPDU的带宽等。若PPDU带宽大于20MHz，HE-SIG-A在每个20MHz上是进行复制传输的。PPDU中还包含HE-SIG-B，提供DL MU MIMO和DL OFDMA的资源指示信息。首先HE-SIG-B在每个20MHz上是单独编码的。在每一个20MHz上的HE-SIG-B的编码结构如下图1所示，图1为本申请一实施例提供的每一个20MHz上的HE-SIG-B的编码结构的示意图，其中整个HE-SIG-B被划分为两部分，分别为公共部分字段和逐个站点字段，其中公共部分字段包含1～N个资源单元分配子字段(RU allocation subfield)，以及当带宽大于等于80MHz时存在的中间26-子载波(Center 26-Tone)资源单元指示字段，然后是用于校验的循环冗余码(Cyclic Redundancy Code,CRC)以及用于循环解码的尾部(Tail)子字段；另外，在逐个站点字段，按照资源单元分配的顺序，存在着1～M个站点字段(User Field)，M个站点字段通常是两个为一组，每两个站点字段后跟着一个CRC和tail字段，除了最后一组，可能会存在1个或者2个站点字段。
资源单元分配子字段的指示方式依赖于802.11ax中不同PPDU带宽下的子载波分布(Tone Plan)。例如：图2为本申请一实施例提供的80MHz的子载波分布及RU分布示意图，如图2所示，当带宽为80MHz时，整个带宽由4个242-tone RU为单位的资源单元组成，特别地，在整个带宽的中间，还存在一个由两个13-tone子单元组成的中间26-tone RU。或者，整个带宽可以由一整个996-tone RU组成，也可以由26-tone RU，52-tone RU，106-tone RU，242-tone RU，484-tone RU的各种组合组成。进一步地，以242-tone RU为单位，图2的最左边可以视为最低频率，图2的最右边可以视为最高频率。从左到右，可以对242-tone RU中的RU进行标号。
进一步地，802.11ax引入了内容信道(Content Channel，CC)的概念。图3为本申请一实施例提供的当PPDU带宽为80MHz时HE-SIG-B指示示意图，如图3所示，当PPDU带宽为80MHz时，存在2个CC，一共4个信道，整体按照频率由低到高按照CC1，CC2，CC1，CC2的结构在4个信道上对资源单元分配信息进行指示，其中在CC1中包含第一个和第三个242-tone RU范围内的资源单元分配子字段以及其范围内所对应的逐个站点字段；CC2中包含第二个和第四个242-tone RU范围内的资源单元子字段以及其范围内所对应的逐个站点字段。另外在两个CC上，都会携带80MHz的中间26-tone RU指示，指示该资源单元是否被用于传输数据。
综上，现有技术实现了20MHz～160MHz情况下的资源单元指示，但其开销较大，例如当PPDU带宽为80MHz时，每个CC上包含了2个资源单元分配子指示字段，并且包含了2个242-tone RU内部所有用户的逐个站点字段，开销较大。而当下一代标准考虑320Mhz的PPDU带宽时，开销会进一步成倍增加，因此，802.11ax的下一代标准新的PPDU如何在更少的开销下支持更大带宽(如320Mhz)的OFDMA或MU-MIMO传输，是本申请需要考虑的问题。
发明内容
本申请提供一种资源单元指示方法、装置及存储介质，从而实现了在更少的开销下支持更大带宽的数据传输。
第一方面，本申请提供一种资源单元指示方法，包括：AP向多个STA发送物理层协议数据单元PPDU；其中，PPDU的传输带宽被划分为M个分段，M为大于1的整数，传输带宽大于或等于80MHz，PPDU包括：M个第一字段，M个第一字段与M个分段一一对应，第一字段在对应的分段上传输，第一字段用于指示AP为多个站点STA中的至少一个STA分配的资源单元RU。
第二方面，本申请提供一种资源单元指示方法，包括：STA接收AP发送的PPDU；其中，PPDU的传输带宽被划分为M个分段，M为大于1的整数，传输带宽大于或等于80MHz，PPDU包括：M个第一字段，M个第一字段与M个分段一一对应，第一字段在对应的分段上传输，第一字段用于指示AP为多个STA中的至少一个STA分配的资源单元RU，STA为多个STA中的任一个；STA根据所述第一字段，进行上行数据传输。
本申请的有益效果包括：通过第一方面或第二方面提供的资源单元指示方法，从而实现了在更少的开销下支持更大带宽的数据传输。
可选地，当RU大于第一字段对应的分段所包括的最大RU时，RU为多个分段构成的分段组合，或者，RU为多个分段所包括的全部或部分分片构成的分片组合。即本申请实现了分段组合或者分片组合的指示方法。
在一种可实现方式中，PPDU还包括：指示信息，指示信息用于指示在RU上进行数据传输的STA的数量。
可选地，当传输带宽为320MHz，M＝4时，RU为分段组合，相应的，第一字段与分段组合的对应关系为以下任一项：当第一字段为第一数值时，分段组合为第一分段和第二分段的组合；当第一字段为第二数值时，分段组合为第一分段和第三分段的组合；当第一字段为第三数值时，分段组合为第一分段和第四分段的组合；当第一字段为第四数值时，分段组合为第二分段和第三分段的组合；当第一字段为第五数值时，分段组合为第二分段和第四分段的组合；当第一字段为第六数值时，分段组合为第三分段和第四分段的组合；当第一字段为第 七数值时，分段组合为第一分段、第二分段和第三分段的组合；当第一字段为第八数值时，分段组合为第一分段、第二分段和第四分段的组合；当第一字段为第九数值时，分段组合为第一分段、第三分段和第四分段的组合；当第一字段为第十数值时，分段组合为第二分段、第三分段和第四分段的组合；当第一字段为第十一数值时，分段组合为第一分段、第二分段、第三分段和第四分段的组合；其中，第一分段、第二分段、第三分段、第四分段为四个不同的分段。
可选地，第一字段的长度为8比特。
可选地，当传输带宽为320MHz，M＝2时，RU为分片组合，相应的，第一字段与分片组合的对应关系为以下任一项：当第一字段为第一数值时，分片组合为第一分片、第二分片和第三分片的组合；当第一字段为第二数值时，分片组合为第一分片、第二分片和第四分片的组合；当第一字段为第三数值时，分片组合为第一分片、第三分片和第四分片的组合；当第一字段为第四数值时，分片组合为第二分片、第三分片和第四分片的组合；当第一字段为第五数值时，分片组合为第一分片、第二分片、第三分片和第四分片的组合；其中，第一分片和第二分片构成M个分段中的一个分段，第三分片和第四分片构成M个分段中的另一个分段。
可选地，第一字段的长度为8比特。
在另一种可能的实现方式中，第一字段还用于指示在RU上进行数据传输的STA的数量。
可选地，当传输带宽为320MHz，M＝4时，RU为分段组合，相应的，第一字段与分段组合以及通过分段组合进行数据传输的STA的数量的对应关系包括以下至少一项：当第一字段为第一数值时，分段组合为第一分段和第二分段的组合，通过分段组合进行数据传输的STA的数量为第一数量；当第一字段为第二数值时，分段组合为第一分段和第三分段的组合，通过分段组合进行数据传输的STA的数量为第二数量；当第一字段为第三数值时，分段组合为第一分段和第四分段的组合，通过分段组合进行数据传输的STA的数量为第三数量；当第一字段为第四数值时，分段组合为第二分段和第三分段的组合，通过分段组合进行数据传输的STA的数量为第四数量；当第一字段为第五数值时，分段组合为第二分段和第四分段的组合，通过分段组合进行数据传输的STA的数量为第五数量；当第一字段为第六数值时，分段组合为第三分段和第四分段的组合，通过分段组合进行数据传输的STA的数量为第六数量；当第一字段为第七数值时，分段组合为第一分段、第二分段和第三分段的组合，通过分段组合进行数据传输的STA的数量为第七数量；当第一字段为第八数值时，分段组合为第一分段、第二分段和第四分段的组合，通过分段组合进行数据传输的STA的数量为第八数量；当第一字段为第九数值时，分段组合为第一分段、第三分段和第四分段的组合，通过分段组合进行数据传输的STA的数量为第九数量；当第一字段为第十数值时，分段组合为第二分段、第三分段和第四分段的组合，通过分段组合进行数据传输的STA的数量为第十数量；当第一字段为第十一数值时，分段组合为第一分段、第二分段、第三分段和第四分段的组合，通过分段组合进行数据传输的STA的数量为第十一数量；其中，第一分段、第二分段、第三分段、第四分段为M个分段中四个不同的分段。
可选地，第一字段的长度为9比特。
可选地，当传输带宽为320MHz，M＝2时，RU为分片组合，相应的，第一字段与分片组合以及通过分片组合进行数据传输的STA的数量的对应关系包括以下至少一项：当第一字段为第一数值时，分片组合为第一分片、第二分片和第三分片的组合，通过分片组合进行数据 传输的STA的数量为第一数量；当第一字段为第二数值时，分片组合为第一分片、第二分片和第四分片的组合，通过分片组合进行数据传输的STA的数量为第二数量；当第一字段为第三数值时，分片组合为第一分片、第三分片和第四分片的组合，通过分片组合进行数据传输的STA的数量为第三数量；当第一字段为第四数值时，分片组合为第二分片、第三分片和第四分片的组合，通过分片组合进行数据传输的STA的数量为第四数量；当第一字段为第五数值时，分片组合为第一分片、第二分片、第三分片和第四分片的组合，通过分片组合进行数据传输的STA的数量为第五数量；其中，第一分片和第二分片构成M个分段中的一个分段，第三分片和第四分片构成M个分段中的另一个分段。
可选地，第一字段均为9比特。
可选地，RU包括：第一字段对应的分段，从而进一步地降低资源开销。
可选地，PPDU还包括：M个第二字段，M个第二字段与M个第一字段一一对应，第二字段包括以下至少一项信息：第二字段对应的第一字段的符号数、第二字段对应的第一字段的调制编码策略MCS、第二字段对应的第一字段的压缩模式，PPDU的传输带宽、基本服务集合颜色、保护间隔和长训练序列尺寸。
可选地，PPDU包括N个物理层协议数据子单元，N小于或等于M，从而提高数据传输的灵活性。
第三方面，本申请提供一种资源单元指示方法，包括：AP向多个STA发送PPDU，PPDU包括M个触发帧，M为大于1的整数；其中，PPDU的传输带宽被划分为M个分段，传输带宽大于或等于40MHz，M个触发帧与M个分段一一对应，触发帧包括：第一字段，第一字段在触发帧对应的分段上传输，第一字段用于指示AP为多个STA中的至少一个STA分配的资源单元RU。
第四方面，本申请提供一种资源单元指示方法，包括：STA接收AP发送的PPDU，PPDU包括M个触发帧，M为大于1的整数；STA根据所述第一字段，进行上行数据传输；其中，PPDU的传输带宽被划分为M个分段，传输带宽大于或等于40MHz，M个触发帧与M个分段一一对应，触发帧包括：第一字段，第一字段在触发帧对应的分段上传输，第一字段用于指示AP为多个STA中的至少一个STA分配的资源单元RU，STA为多个STA中的任一个。
可选地，当RU大于第一字段对应的分段所包括的最大RU时，RU为多个分段构成的分段组合，或者，RU为多个分段所包括的全部或部分分片构成的分片组合。
可选地，当传输带宽为320MHz，M＝4时，RU为分段组合，相应的，第一字段与分段组合的对应关系为以下任一项：当第一字段为第一数值时，分段组合为第一分段和第二分段的组合；当第一字段为第二数值时，分段组合为第一分段和第三分段的组合；当第一字段为第三数值时，分段组合为第一分段和第四分段的组合；当第一字段为第四数值时，分段组合为第二分段和第三分段的组合；当第一字段为第五数值时，分段组合为第二分段和第四分段的组合；当第一字段为第六数值时，分段组合为第三分段和第四分段的组合；当第一字段为第七数值时，分段组合为第一分段、第二分段和第三分段的组合；当第一字段为第八数值时，分段组合为第一分段、第二分段和第四分段的组合；当第一字段为第九数值时，分段组合为第一分段、第三分段和第四分段的组合；当第一字段为第十数值时，分段组合为第二分段、第三分段和第四分段的组合；当第一字段为第十一数值时，分段组合为第一分段、第二分段、第三分段和第四分段的组合；其中，第一分段、第二分段、第三分段、第四分段为M个分段中四个不同的分段。
可选地，第一字段的长度为8比特。
可选地，当传输带宽为320MHz，M＝2时，RU为分片组合，相应的，第一字段与分片组合的对应关系包括以下至少一项：当第一字段为第一数值时，分片组合为第一分片、第二分片和第三分片的组合；当第一字段为第二数值时，分片组合为第一分片、第二分片和第四分片的组合；当第一字段为第三数值时，分片组合为第一分片、第三分片和第四分片的组合；当第一字段为第四数值时，分片组合为第二分片、第三分片和第四分片的组合；当第一字段为第五数值时，分片组合为第一分片、第二分片、第三分片和第四分片的组合；其中，第一分片和第二分片构成M个分段中的一个分段，第三分片和第四分片构成M个分段中的另一个分段。
可选地，第一字段为8比特。
可选地，当传输带宽被以160Mhz为单元划分为M个分段时，触发帧还包括：第二字段；当第二字段为第一值，且RU小于或等于996-tone RU时，第一值用于指示RU属于触发帧对应的分段中的主80MHz，当第二字段为第二值，且RU小于或等于996-tone RU时，第二值用于指示RU属于触发帧对应的分段中的从80MHz；
或者，当第二字段为第一值，且RU小于或等于996-tone RU时，第一值用于指示RU属于触发帧对应的分段中的低频80MHz；当第二字段为第二值，且RU小于或等于996-tone RU时，第二值用于指示RU属于触发帧对应的分段中的高频80MHz。
可选地，当传输带宽为320MHz时，触发帧还包括：第三字段；当第三字段为第一值，且RU小于或等于996-tone RU时，第一值用于指示RU属于传输带宽中的最低频80MHz；当第三字段为第二值，且RU小于或等于996-tone RU时，第二值用于指示RU属于传输带宽中的次低频80MHz；当第三字段为第三值，且RU小于或等于996-tone RU时，第三值用于指示RU属于传输带宽中的次高频80MHz；当第三字段为第四值，且RU小于或等于996-tone RU时，第四值用于指示RU属于传输带宽中的最高频80MHz。
或者，当第三字段为第一值，且RU小于或等于996-tone RU时，第一值用于指示RU属于传输带宽中的主80MHz；当第三字段为第二值，且RU小于或等于996-tone RU时，第二值用于指示RU属于传输带宽中的第一从80MHz；当第三字段为第三值，且RU小于或等于996-tone RU时，第三值用于指示RU属于传输带宽中的第二从80MHz；当第三字段为第四值，且RU小于或等于996-tone RU时，第四值用于指示RU属于传输带宽中的第三从80MHz。
可选地，RU包括：第一字段对应的分段。
第五方面，本申请提供一种资源单元指示装置，装置为接入点AP，包括：处理模块和发送模块。处理模块用于生成物理层协议数据单元PPDU；发送模块用于向多个站点STA发送PPDU；其中，PPDU的传输带宽被划分为M个分段，M为大于1的整数，传输带宽大于或等于80MHz，PPDU包括：M个第一字段，M个第一字段与M个分段一一对应，第一字段在对应的分段上传输，第一字段用于指示AP为多个站点STA中的至少一个STA分配的资源单元RU。
第六方面，本申请提供一种资源单元指示装置，装置为站点STA，包括：接收模块和处理模块。接收模块用于接收接入点AP发送的物理层协议数据单元PPDU；处理模块用于根据所述第一字段，解析所述PPDU；其中，PPDU的传输带宽被划分为M个分段，M为大于1的整数，传输带宽大于或等于80MHz，PPDU包括：M个第一字段，M个第一字段与M个分段一一对应，第一字段在对应的分段上传输，第一字段用于指示AP为多个STA中的至少 一个STA分配的资源单元RU，STA为多个STA中的任一个。
第七方面，本申请提供一种资源单元指示装置，装置为接入点AP，包括：处理模块和发送模块。处理模块用于生成物理层协议数据单元PPDU；发送模块用于向多个站点STA发送PPDU，PPDU包括M个触发帧，M为大于1的整数；其中，PPDU的传输带宽被划分为M个分段，传输带宽大于或等于40MHz，M个触发帧与M个分段一一对应，触发帧包括：第一字段，第一字段在触发帧对应的分段上传输，第一字段用于指示AP为多个STA中的至少一个STA分配的资源单元RU。
第八方面，本申请提供一种资源单元指示装置，装置为站点STA，包括：接收模块和处理模块。接收模块用于接收接入点AP发送的物理层协议数据单元PPDU，PPDU包括M个触发帧，M为大于1的整数；处理模块用于根据第一字段，进行上行数据传输；其中，PPDU的传输带宽被划分为M个分段，传输带宽大于或等于40MHz，M个触发帧与M个分段一一对应，触发帧包括：第一字段，第一字段在触发帧对应的分段上传输，第一字段用于指示AP为多个STA中的至少一个STA分配的资源单元RU，STA为多个STA中的任一个。
第九方面，本申请提供一种资源单元指示装置，装置为接入点AP，包括：处理器和发送器。处理器用于生成物理层协议数据单元PPDU；发送器用于向多个站点STA发送PPDU；其中，PPDU的传输带宽被划分为M个分段，M为大于1的整数，传输带宽大于或等于80MHz，PPDU包括：M个第一字段，M个第一字段与M个分段一一对应，第一字段在对应的分段上传输，第一字段用于指示AP为多个站点STA中的至少一个STA分配的资源单元RU。
第六方面，本申请提供一种资源单元指示装置，装置为站点STA，包括：接收器和处理器。接收器用于接收接入点AP发送的物理层协议数据单元PPDU；处理器用于根据第一字段，解析所述PPDU；其中，PPDU的传输带宽被划分为M个分段，M为大于1的整数，传输带宽大于或等于80MHz，PPDU包括：M个第一字段，M个第一字段与M个分段一一对应，第一字段在对应的分段上传输，第一字段用于指示AP为多个STA中的至少一个STA分配的资源单元RU，STA为多个STA中的任一个。
第七方面，本申请提供一种资源单元指示装置，装置为接入点AP，包括：处理器和发送器。处理器用于生成物理层协议数据单元PPDU；发送器用于向多个站点STA发送PPDU，PPDU包括M个触发帧，M为大于1的整数；其中，PPDU的传输带宽被划分为M个分段，传输带宽大于或等于40MHz，M个触发帧与M个分段一一对应，触发帧包括：第一字段，第一字段在触发帧对应的分段上传输，第一字段用于指示AP为多个STA中的至少一个STA分配的资源单元RU。
第八方面，本申请提供一种资源单元指示装置，装置为站点STA，包括：接收器和处理器。接收器用于接收接入点AP发送的物理层协议数据单元PPDU，PPDU包括M个触发帧，M为大于1的整数；处理器用于根据第一字段，进行上行数据传输；其中，PPDU的传输带宽被划分为M个分段，传输带宽大于或等于40MHz，M个触发帧与M个分段一一对应，触发帧包括：第一字段，第一字段在触发帧对应的分段上传输，第一字段用于指示AP为多个STA中的至少一个STA分配的资源单元RU，STA为多个STA中的任一个。
第九方面，本申请提供一种计算存储介质，包括程序指令，程序指令用于实现如上述的资源单元指示方法。
第十方面，本申请提供一种计算机程序产品，包括程序指令，程序指令用于实现如上述的资源单元指示方法。
本申请提供一种资源单元指示方法、装置及存储介质，包括：AP向多个STA发送物理层协议数据单元PPDU；其中，PPDU的传输带宽被划分为M个分段，M为大于1的整数，传输带宽大于或等于80MHz，PPDU包括：M个第一字段，M个第一字段与M个分段一一对应，第一字段在对应的分段上传输，第一字段用于指示AP为多个站点STA中的至少一个STA分配的资源单元RU。从而实现了在更少的开销下支持更大带宽的数据传输。
附图说明
图1为本申请一实施例提供的每一个20MHz上的HE-SIG-B的编码结构的示意图；
图2为本申请一实施例提供的80MHz的子载波分布及RU分布示意图；
图3为本申请一实施例提供的当PPDU带宽为80MHz时HE-SIG-B指示示意图；
图4为高效多用户物理层协议数据单元(High efficient multiple user PPDU，HE MU PPDU)的结构示意图；
图5为本申请一实施例提供的带宽为160MHz时的信道分布示意图；
图6为本申请一实施例提供的20MHz的子载波分布及RU分布示意图；
图7为本申请一实施例提供的40MHz的子载波分布及RU分布示意图；
图8为本申请一实施例提供的当PPDU带宽为20MHz时，HE-SIG-B信令指示的示意图；
图9为本申请一实施例提供的当PPDU带宽为40MHz时，HE-SIG-B信令指示的示意图；
图10为本申请一实施例提供的当PPDU带宽为160MHz时，HE-SIG-B信令指示的示意图；
图11为本申请一实施例提供的应用场景示意图；
图12为本申请一实施例提供的一种资源单元指示方法的流程图；
图13为本申请一实施例提供的以80MHz为分段单位的320Mhz带宽的示意图；
图14为本申请一实施例提供的一种以80MHz为分段单位(包括两个CC)的EHT-SIG-B的示意图；
图15为本申请一实施例提供的一种以80MHz为分段单位(包括四个CC)的EHT-SIG-B的示意图；
图16为本申请一实施例提供的基于分段组合的EHT-SIG-B的示意图；
图17为本申请一实施例提供的基于分段组合的EHT-SIG-B的示意图；
图18为本申请一实施例提供的以160MHz为分段单位的320Mhz带宽的示意图；
图19为本申请一实施例提供的以160MHz为分段单位(两个CC)的EHT-SIG-B的示意图；
图20为本申请一实施例提供的以160MHz为分段单位(四个CC)的EHT-SIG-B的示意图；
图21本申请一实施例提供的基于分片组合的EHT-SIG-B的示意图；
图22为本申请一实施例提供的基于分片组合的EHT-SIG-B的示意图；
图23为本申请一实施例提供的分片上的EHT-SIG-A的示意图；
图24为本申请一实施例提供的一种资源单元指示方法的流程图；
图25为本申请一实施例提供的以80MHz为分段单位的4个触发帧中包括的公共字段和逐个站点字段的示意图；
图26为本申请一实施例提供的在部分分段上传输EHT PPDU的示意图；
图27为本申请一实施例提供的在部分分段上传输非EHT PPDU的示意图；
图28示出了本申请实施例的接入点侧的装置2800的示意性框图；
图29示出了本申请实施例的另一种接入点侧的通信装置2900的示意性框图；
图30示出了本申请实施例的站点侧的装置3000的示意性框图；
图31示出了本申请实施例的另一种站点侧的通信装置3100的示意性框图。
具体实施方式
在介绍本申请即使方案之前，下面首先介绍与本申请相关的专业术语：
1、OFDMA传输
无线局域网(Wireless Local Area Network，WLAN)从802.11a/g开始，历经802.11n,802.11ac，到现在正在讨论中的802.11ax，其PPDU所支持的带宽如表1所示：
表1
Figure PCTCN2019093178-appb-000001
其中802.11n标准称为高吞吐率(High Throughput，HT)，802.11ac标准称为非常高吞吐率(Very High Throughput，VHT)，802.11ax称为高效(High Efficient，HE)，而对于HT之前的标准，如802.11a/g等统称非高吞吐率(Non-High Throughput，Non-HT)。
在802.11ax标准之前，802.11标准支持正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)传输，整个带宽统一分配给一个或一组STA进行单用户(Single User，SU)传输或者下行多用户多输入多输出(Downlink Multiple User Multiple Input Multiple Output，DL MU MIMO)传输。而到了802.11ax，新引入了正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)技术，整个带宽被分为了一个或多个RU。802.11ax引入了DL OFDMA和上行链路(Uplink，UL)OFDMA。而802.11ax共有4种分组格式，其中HE MU PPDU主要用于进行DL OFDMA和DL MU MIMO传输，图4为高效多用户物理层协议数据单元(High efficient multiple user PPDU，HE MU PPDU)的结构示意图，如图4所示，该PPDU被分为前导码和数据字段部分，其中前导码部分包含HE-SIG-A和HE-SIG-B两部分HE信令字段。如上所述，HE-SIG-A用于指示PPDU的带宽，HE-SIG-B包含的符号数，HE-SIG-B所采用的MCS，HE-SIG-B是否采用了压缩模式等指示；而HE-SIG-B如图1所示，其主要包含公共部分字段和逐个站点字段，其中公共部分字段包含1～N个资源单元分配子字段，以及当带宽大于等于80MHz时存在的中间26子载波资源单元(26-tone RU)指示字段，然后是用于校验的CRC以及用于循环解码的尾部(Tail)子字段；另外，在逐个站点字段，按照资源单元分配的顺序，存在着1～M个站点字段(User Field)，M个站点字段通常是两个为一组，每两个站点字段后跟着一个CRC和tail字段，除了最后一组，可能会存在1个或者2个站点字段。
2、信道及接入
802.11标准通常以20MHz为基本带宽，所支持的带宽通常都是20MHz的指数整数倍(20、40、80以及160MHz)。将20MHz作为一个信道，例如：图5为本申请一实施例提供的带宽 为160MHz时的信道分布示意图，如图5所示，整个160MHz信道被分为主20MHz信道(或简称主信道(Primary 20MHz，P20))，从20MHz信道(Secondary 20MHz，S20)，从40MHz信道(S40)，从80MHz(S80)信道。
3、802.11ax/ac标准中的“分片(Segments，Seg)”技术
802.11ax/ac标准中，当带宽为160MHz，或者80MHz+80MHz时，以80MHz作为一个分片单位，对PPDU的传输带宽进行划分，以形成两个分片。
进一步地，如上所述，目前802.11ax中的HE-SIG-B已经提供了DL OFDMA及DL MU MIMO的资源单元指示方法。而资源单元分配子字段的指示方式依赖于802.11ax中不同PPDU带宽下的子载波分布(Tone Plan)。
图6为本申请一实施例提供的20MHz的子载波分布及RU分布示意图，如图6所示，当带宽为20MHz时，整个带宽可以由一整个242-tone RU组成，也可以由26-tone RU，52-tone RU，106-tone RU的各种组合组成。除了用于传输数据的RU，此外，还包括一些保护(Guard)子载波，空子载波(图中1所在的子载波为空子载波，其中1表示空子载波的个数为1)，或者直流(Direct Current，DC)子载波。
图7为本申请一实施例提供的40MHz的子载波分布及RU分布示意图，如图7所示，当带宽为40MHz时，整个带宽大致相当于20MHz的子载波分布的复制，整个带宽可以由一整个484-tone RU组成，也可以由26-tone RU，52-tone RU，106-tone RU，242-tone RU的各种组合组成。
如上所述，图2示出了80MHz的子载波分布及RU分布，如图2所示，当带宽为80MHz时，整个带宽由4个242-tone RU为单位的资源单元组成，特别的，在整个带宽的中间，还存在一个由两个13-tone子单元组成的中间26-tone RU。整个带宽可以由一整个996-tone RU组成，也可以由26-tone RU，52-tone RU，106-tone RU，242-tone RU，484-tone RU的各种组合组成。
当带宽为160MHz或者80+80MHz时，整个带宽可以看成两个80Mhz的子载波分布的复制，整个带宽可以由一整个2*996-tone RU组成，也可以由26-tone RU，52-tone RU，106-tone RU，242-tone RU，484-tone RU，996-tone RU的各种组合组成。
以上的各种子载波分布，以242-tone RU为单位，针对图2、图6或图7，最左边可以看做最低频率，最右边可以看做最高频率。从左到右，可以对242-tone RU进行标号。
如上所述，802.11ax引入了内容信道CC的概念。图8为本申请一实施例提供的当PPDU带宽为20MHz时，HE-SIG-B信令指示的示意图，如图8所示，当PPDU带宽只有20MHz时，HE-SIG-B只包含1个CC，该CC中包含1个资源单元分配子字段，用于指示数据部分242-tone(子载波)RU范围内的资源单元分配指示。其中资源单元分配子字段为8个比特，通过索引的方式指示出242-tone RU内所有可能的资源单元排列组合方式。此外，对于尺寸大于等于106-tone的RU，同时通过索引，指示该RU中进行SU/MU-MIMO传输的用户数(即STA数量)。资源单元分配子字段的索引如表2所示：
表2
Figure PCTCN2019093178-appb-000002
Figure PCTCN2019093178-appb-000003
Figure PCTCN2019093178-appb-000004
Figure PCTCN2019093178-appb-000005
如表2所示，第一列代表资源单元分配子字段的8比特索引，中间列#1～#9代表着不同资源单元的排列组合，其中某个表格的数字代表该资源单元所包含的子载波数目。举例来讲，索引00111y 2y 1y 0表示整个242-tone RU范围被分成了52-tone RU，52-tone RU，26-tone RU，106-tone RU共4个RU。另外，第三列代表指示相同资源单元分配的条目的个数。其中条目数用于指示106-tone RU内所包含的用户数，例如：00010y 2y 1y 0对应的条目数目为8，是因为在指示资源单元分配的同时，y 2y 1y 0还用于指示在该106-tone RU内所包含的用户数，对应1～8个用户(即站点)，其中y 2y 1y 0的每一个值都可以为0或者1。
另外，若PPDU带宽大于20MHz，资源单元分配子字段还可以指示资源单元大于242-tone RU的情况，如484-tone RU或者996-tone RU，代表该STA被分配了包含所在242-tone RU的更大RU的资源单元。
进一步地，在逐个站点字段中按照资源分配的顺序，指示在该242-tone RU范围内被分配的STA的站点信息。
图9为本申请一实施例提供的当PPDU带宽为40MHz时，HE-SIG-B信令指示的示意图，如图9所示，当PPDU带宽为40MHz时，存在两个HE-SIG-B内容信道，CC1和CC2。其中在第一个HE-SIG-B信道的CC1中包含第一个242-tone RU范围内的资源单元分配子字段以及所对应的逐个站点字段；第二个HE-SIG-B信道的CC2中包含第二个242-tone RU范围内的资源单元分配子字段以及所对应的逐个站点字段。
图3示出了当PPDU带宽为80MHz时，HE-SIG-B信令指示，如图3所示，当PPDU带宽为80MHz时，仍然存在2个CC，一共4个信道，因此整体按照频率由低到高按照CC1，CC2，CC1，CC2的结构在4个信道上对资源单元分配信息进行指示，其中在CC1中包含第一个和第三个242-tone RU范围内的资源单元分配子字段以及其范围内所对应的逐个站点字段；CC2中包含第二个和第四个242-tone RU范围内的资源单元子字段以及其范围内所对应的逐个站点字段。另外在两个CC上，都会携带80MHz的中间26-tone RU指示，指示该资源单元是否被用于传输数据。
图10为本申请一实施例提供的当PPDU带宽为160MHz时，HE-SIG-B信令指示的示意图，如图10所示，当PPDU带宽为160MHz时，仍然存在2个CC，一共8个信道，因此整体按照频率由低到高按照CC1，CC2，CC1，CC2，CC1，CC2，CC1，CC2的结构在8个信道上对资源单元分配信息进行指示，其中在CC1中包含第一个、第三个、第五个、第七个242-tone RU范围内的资源单元分配子字段以及其范围内所对应的逐个站点字段；CC2中包含第二个、第四个、第六个和第八个242-tone RU范围内的资源单元子字段以及其范围内所对应的逐个站点字段。另外在两个CC上，会各自携带160MHz的两个80MHz中间26-tone RU指示，指示该资源单元是否被用于传输数据。
另外对于全带宽模式下的MU-MIMO，802.11ax会在HE-SIG-A中指示HE-SIG-B为压缩模式，并指示全带宽进行MU-MIMO传输的用户数。此时，HE-SIG-B不存在公共字段，直接指示逐个站点字段。
如上所述，现有技术实现了20M～160MHz情况下的资源单元指示，但其开销较大，例如 当PPDU带宽为80MHz时，每个CC上包含了2个资源单元分配子指示字段，并且包含了2个242-tone RU内部所有用户的逐个站点字段，开销较大。再例如当PPDU带宽为160MHz时，每个CC上包含了4个资源单元分配子字段，并且包含了4个242-tone RU内部所有用户的逐个站点字段，开销较大。而当下一代标准考虑320Mhz的PPDU带宽时，开销会进一步成倍增加，因此，如何在更少的开销的情况下支持更大带宽(如320Mhz)的OFDMA或MU-MIMO传输，是本申请需要考虑的问题。
需要说明的是，本申请实施例的技术方案，可以应用于无线局域网WLAN中支持802.11ax下一代或更下一代标准的通信系统中，还可以应用于其他支持大带宽OFDM传输的通信系统中，在本申请中，为描述方便，称802.11ax的下一代标准为极高吞吐率(Extremely High Throughput，EHT)，可以理解的，802.11ax下一代标准还可以有其他名称，例如极(高)吞吐率(Extreme Throughput，XT)或者超高吞吐率(Ultra High Throughput，UHT)等，本申请对此不做限制。为描述方便，本申请实施例以WLAN系统为例进行说明。图11为本申请一实施例提供的应用场景示意图，如图11所示，该应用场景中可以包括一个或多个接入点AP，以及，一个或多个站点STA，其中，该接入点AP可以是用于与站点通信的设备。该接入点可以是任意一种具有无线收发功能的设备或可设置于该设备的芯片，该设备包括但不限于：演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(base band Unit，BBU)，无线保真(wireless fidelity，WIFI)系统中的接入点(access point，AP)、无线中继节点、无线回传节点、传输点(transmission point，TP)或者发送接收点(transmission and reception point，TRP)等，还可以为支持5G协议的基站等。站点STA用户设备、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。站点还可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线局域网中的站点、车载设备、可穿戴设备，未来5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等。
本申请技术方案可以适用于AP与一个或多个STA之间的数据通信，也同样适用于AP于多个AP之间的通信，还适用于STA与多个STA之间的通信。下面以AP与多个STA之间的数据通信为例对本申请技术方案进行说明。
本申请技术方案的主要流程是AP向STA发送PPDU，该PPDU的传输带宽被划分为M个分段，该PPDU包含每个分段对应的EHT-SIG-B(即下面实施例一和实施例二中的第一字段，或者，对于分段包括多个CC的情况，EHT-SIG-B包括该第一字段)，可选的，还包括每个分段对应的EHT-SIG-A(即实施例一和实施例二中的第二字段，或者，对于分段包括多个CC的情况，EHT-SIG-A包括该第二字段)。AP通过每个分段中的第一字段指示其对应分段的STA的RU分配情况。当第一字段所指示的RU尺寸小于等于该第一字段对应的分段所包括的最大RU时，则第一字段所指示的RU仅分配给所属分段的STA。而当第一字段所指示的RU尺寸大于该第一字段对应的分段所包括的最大RU时，第一字段所指示的RU为分段组合或者分片组合。
STA接收到该PPDU之后，获取其所属分段的第一字段，通过第一字段确定该STA被分配的RU，该RU为该第一字段对应的分段、分段组合或分片组合。
实施例一
具体地，图12为本申请一实施例提供的一种资源单元指示方法的流程图，如图12，该方法包括如下步骤：
步骤S1201：AP生成PPDU，其中，PPDU的传输带宽被划分为M个分段，M为大于1的整数，所述传输带宽大于或等于80MHz，PPDU包括：M个第一字段，M个第一字段与M个分段一一对应，第一字段在对应的分段上传输，第一字段用于指示AP为多个STA中的至少一个STA分配的RU。
步骤S1202：AP向多个STA发送PPDU。
接收到该PPDU的站点，可以根据第一字段，解析该PPDU的数据字段。具体来说，接收到该PPDU的站点，根据第一字段可以确定该STA的数据承载在哪个RU当中，进一步的，该STA可以在对应的RU上接收并解析该STA的数据。
可选地，当以80MHz为一个分段单位时，分段被理解为802.11ax/ac标准中的“分片(Segments，Seg)”。当以160MHz或更大带宽为一个分段单位时，分段即为一个部分part，该分段包括至少一个所述分片。
可选地，在本申请实施例中，该PPDU包括前导码和数据字段部分，其中前导码部分包括：M个第一字段(该第一字段可以被理解为每个分段的EHT-SIG-B，也可以被理解为EHT-SIG-B中的资源单元分配子字段，为方便起见，以下将第一字段视为EHT-SIG-B中的资源单元分配子字段，以对资源单元指示方法进行说明)，可选地，该PPDU还可以包括M个第二字段(该第二字段可以被理解为EHT-SIG-A)。
进一步地，如上所述，第一字段用于指示AP为多个STA中的至少一个STA分配的RU。其中当第一字段所指示的RU小于或等于该第一字段对应的分段所包括的最大RU时，该第一字段所指示的RU位于第一字段对应的分段内。当第一字段所指示的RU大于该第一字段对应的分段所包括的最大RU时，该第一字段所指示的RU为多个分段构成的分段组合，或者，该第一字段所指示的RU为多个分段所包括的全部或部分分片构成的分片组合。例如：STA1和STA2对应分段1，当STA1和STA2被分配的RU小于分段1中的最大RU时，AP通过分段1对应的第一字段指示STA1和STA2被分配的RU为该分段1上的第一个242-tone RU；又例如，STA1和STA2对应分段2，当STA3和STA4被分配的RU大于分段2中的最大RU时，AP通过分段2对应的第一字段指示STA3和STA4被分配的RU为分段1和分段2构成的分段组合RU。
下面通过如下示例一和示例二对资源单元指示方法进行进一步地说明：
示例一
下面以PPDU的传输带宽为320MHz，M＝4(以80MHz为一个分段单位，将整个带宽分为4个分段)为例，对资源单元指示方法进行说明：
图13为本申请一实施例提供的以80MHz为分段单位的320Mhz带宽的示意图，如图13所示，320Mhz带宽被划分为四个分段，分别是：Part1、Part2、Part3和Part4。而在每个分段，AP为所属分段的STA配置相应的P20，S20，S40信道。整个带宽可以被看做存在多个(临时)P20信道。
如上所述，第一字段用于指示AP为所述多个STA中的至少一个STA分配的RU。具体地，图14为本申请一实施例提供的一种以80MHz为分段单位(包括两个CC)的EHT-SIG-B的示意图，如图14所示，每个分段包括4个信道，两个CC。其中，在Part1内，CC11承载 以下信息：属于Part1的第1个242-tone RU以及第3个242-tone RU范围内的资源单元分配子字段(分别是Part1对应的第一字段)以及相应242-tone RU范围内所分配的STA的逐个站点信息。CC12承载以下信息：属于Part1的第2个以及第4个242-tone RU范围内的资源单元分配子字段(分别是Part1对应的第一字段)以及相应242-tone RU范围内所分配的STA的逐个站点信息。在Part2内，CC21承载以下信息：属于Part2的第5个以及第7个242-tone RU范围内的资源单元分配子字段(Part2对应的第一字段)以及相应242-tone RU范围内所分配的STA的逐个站点信息。CC22承载以下信息：属于Seg2的第6个和第8个242-tone RU范围内的资源单元分配子字段(Part2对应的第一字段)以及相应242-tone RU范围内所分配的STA的逐个站点信息。在Part3内，CC31承载以下信息：属于Seg3的第9个以及第11个242-tone RU范围内的资源单元分配子字段(Part3对应的第一字段)以及相应242-tone RU范围内所分配的STA的逐个站点信息。CC32承载以下信息：属于Seg3的第10个和第12个242-tone RU范围内的资源单元分配子字段(Part3对应的第一字段)以及相应242-tone RU范围内所分配的STA的逐个站点信息。在Part4内，CC41承载以下信息：属于Seg4的第13个以及第15个242-tone RU范围内的资源单元分配子字段(Part4对应的第一字段)以及相应242-tone RU范围内所分配的STA的逐个站点信息。CC42承载以下信息：属于Seg4的第14个和第16个242-tone RU范围内的资源单元分配子字段(Part4对应的第一字段)以及相应242-tone RU范围内所分配的STA的逐个站点信息。
需要说明的是，上述的第1个242-tone RU至第16个242-tone RU是针对PPDU的整个带宽而言的。
需要说明的是，图14包括两个CC，实际上，也可以也采用4个CC，具体地，图15为本申请一实施例提供的一种以80MHz为分段单位(包括四个CC)的EHT-SIG-B的示意图。如图15所示，这时每个CC里只需要指示1个242-tone RU范围内的资源单元分配子字段，从而进一步减少开销。
对于资源单元分配子字段，当STA被分配的RU尺寸小于等于996-tone RU(即分段单位为80MHz中的最大RU)时，可以采用如上述表2所示的资源单元子字段进行资源指示。
当STA被分配的RU尺寸大于996-tone RU时，可以通过如下任一个方式进行资源指示：
第一种方式，利用预留(Reserved)字段指示部分或全部的分段组合RU。
具体地，当资源单元分配子字段所指示的RU为分段组合时，资源单元分配子字段与分段组合RU的对应关系包括如表3所示的至少一个条目：
表3
资源单元分配子字段 分段组合RU
第一数值 Part1+Part2
第二数值 Part1+Part3
第三数值 Part1+Part4
第四数值 Part2+Part3
第五数值 Part2+Part4
第六数值 Part3+Part4
第七数值 Part1+Part2+Part3
第八数值 Part1+Part2+Part4
第九数值 Part1+Part3+Part4
第十数值 Part2+Part3+Part4
第十一数值 Part1+Part2+Part3+Part4
其中，Part1、Part2、Part3、Part4为所述四个不同的分段。
可选地，第一数值、第二数值、第三数值、第四数值、第五数值、第六数值、第七数值、第八数值、第九数值、第十数值以及第十一数值的长度均为8比特。也就是说，该资源单元分配子字段可以为8比特。
需要说明的是，上述资源单元分配子字段与分段组合的映射关系是可以变换的，并不局限于本申请实施例所列举出来的情形，例如，还可以是：当资源单元分配子字段为第一数值时，分段组合为Part1和Part3的组合；当资源单元分配子字段为第二数值时，分段组合为Part1和Part2的组合。可以理解的，其他替换的情形，也在本申请实施例的保护范围之内。表格中使用的分段标识为分段的逻辑标识，通常来说，分段标识1(Part1)指代包含主20MHz信道的频率最低的80MHz信道，分段标识2(Part2)指代近邻Part1的频率次低的80MHz信道，分段标识3(Part3)指代近邻Part2的频率较高的80MHz信道；分段标识4(Part4)指代近邻Part3的频率最高的80MHz信道。上述描述为分段标识与信道的一种常用的映射关系。分段标识与信道还存在其他的映射关系，本申请对此不作限定。
并且，上表为穷举了4个分段的所有可能的组合情况，在实际应用中，可能只包括上表中所涉及的一部分组合情况。一个示例中，资源单元分配子字段可以是频域连续的分段的组合。举例来说，可以是只包括上述11种组合情况中的6种，分别为：Part1+Part2、Part2+Part3、Part3+Part4、Part1+Part2+Part3、Part2+Part3+Part4、Part1+Part2+Part3+Part4。
举例来说，资源单元分配子字段与所指示的分段组合RU的对应关系的一种例子如表4所示：
表4
Figure PCTCN2019093178-appb-000006
Figure PCTCN2019093178-appb-000007
举例来讲，若至少一个STA被分配了Part1+Part2的分段组合，尺寸为2*996-tone，则资源单元分配子字段的取值可以为01110100。
如上所述，资源单元分配子字段用于指示为至少一个STA分配的RU，进一步地，EHT-SIG-B中还可以包括指示信息，该指示信息用于指示所述至少一个STA的数量，即在资源单元分配子字段所指示的RU上进行数据传输的STA的数量。更进一步地，当资源单元分配子字段所指示的RU为分段组合时，指示信息的指示方式包括如下两种情况：
第一种情况：对于每个分段，它所包括的每个CC都携带相同的指示信息，该指示信息用于指示的在资源单元分配子字段所指示的分段组合RU上进行数据传输的STA的数量。
第二种情况：对于一个分段，分段上承载多个CC，每个CC携带不同的指示信息，每个CC上的指示信息所指示的STA的数量为在所述分段组合RU上进行数据传输的STA的数量的一部分，每个CC中包括这一部分STA的用于信息字段。假设该分段包括CC1和CC2，其中CC1上可以携带第一指示信息，CC2上携带第二指示信息，第一指示信息和第二指示信息联合指示在资源单元分配子字段所指示的分段组合RU上进行数据传输的STA的数量，比如可以是第一指示信息所指示的STA的数量与第二指示信息所指示的STA的数量之和。举例来说，若在该RU上传输的STA的数量为5，其中，CC1包括这5个STA中的其中3个STA的用户信息字段，第一指示信息指示的STA的数量为3，CC2包括除上述3个STA之外的另外2个STA的用户信息字段，且第二指示信息指示的STA的数量为2，因此第一指示信息和第二指示信息联合指示的STA个数为5。
以资源单元分配子字段指示的RU包括Part1和Part2(Part1+Part2)的组合为例进行说明，图16为本申请一实施例提供的基于分段组合的EHT-SIG-B的示意图，如图16所示，该EHT-SIG-B包括：用于指示分段组合Part1+Part2的资源单元子字段以及指示信息，该指示信息用于指示通过Part1+Part2进行数据传输的STA的数量。该指示信息的指示方式可以采用前述的两种方式，此处不再赘述。
需要说明的是：由于EHT-SIG-B已经包括：用于指示分段组合Part1+Part2的资源单元子字段，因此对于第2、3、4个242-tone RU的资源单元分配子字段(图中用虚线框表示)无需重复指示分段组合Part1+Part2。当然，为了保证字段格式一致，第2、3、4个242-tone RU的资源单元分配子字段也可以重复指示分段组合Part1+Part2，也就是说CC11上的两个资源单元子字段的取值相同，其指示的RU都为Part1+Part2，本申请对此不做限制。而中间26-tone RU此时并不存在，因此可以置0，表示该26-tone RU没有被单独分配给任何一个STA。
基于此，针对320MHz的传输带宽，现有802.11ax中每个CC上包括8个242-tone RU 范围内的资源单元分配子字段，而在示例一的第一种方式中，由于AP针对分段进行资源指示，每个CC上仅包括2个242-tone RU范围内的资源单元分配子字段，因此本申请提供的指示方式相比于802.11ax中的指示方式，其资源开销减少到了四分之一。
第二种方式，资源单元分配子字段除了用于指示分段组合RU之外，还用于指示在该分段组合RU上进行数据传输的STA的数量(用户数)。其中，资源单元分配子字段与分段组合RU以及在该分段组合上进行数据传输的STA的数量的对应关系包括以下至少一个条目，具体如表5所示：
表5
资源单元分配子字段 分段组合RU以及用户数
第一数值 Part1+Part2，第一数量
第二数值 Part1+Part2，第二数量
…… ……
第八数值 Part1+Part2，第八数量
第九数值 Part1+Part3，第一数量
第十数值 Part1+Part3，第二数量
…… ……
第十六数值 Part1+Part3，第八数量
第十七数值 Part1+Part4，第一数量
第十八数值 Part1+Part4，第二数量
…… ……
第二十四数值 Part1+Part4，第八数量
第二十五数值 Part2+Part3，第一数量
第二十六数值 Part2+Part3，第二数量
…… ……
第三十二数值 Part2+Part3，第八数量
第三十三数值 Part2+Part4，第一数量
第三十四数值 Part2+Part4，第二数量
…… ……
第四十数值 Part2+Part4，第八数量
第四十一数值 Part3+Part4，第一数量
第四十二数值 Part3+Part4，第二数量
…… ……
第四十八数值 Part3+Part4，第八数量
第四十九数值 Part1+Part2+Part3，第一数量
第五十数值 Part1+Part2+Part3，第二数量
…… ……
第五十六数值 Part1+Part2+Part3，第八数量
第五十七数值 Part1+Part2+Part4，第一数量
第五十八数值 Part1+Part2+Part4，第二数量
…… ……
第六十四数值 Part1+Part2+Part4，第八数量
第六十五数值 Part1+Part3+Part4，第一数量
第六十六数值 Part1+Part3+Part4，第二数量
…… ……
第七十二数值 Part1+Part3+Part4，第八数量
第七十三数值 Part2+Part3+Part4，第一数量
第七十四数值 Part2+Part3+Part4，第二数量
…… ……
第八十数值 Part2+Part3+Part4，第八数量
第八十一数值 Part1+Part2+Part3+Part4，第一数量
第八十二数值 Part1+Part2+Part3+Part4，第二数量
…… ……
第八十八数值 Part1+Part2+Part3+Part4，第八数量
其中，Part1、Part2、Part3、Part4为所述四个不同的分段。
可选地，第一数值至第八十八数值的长度均为9比特。也就是说，该资源单元分配子字段可以为9比特。
可选地，表5中的第一数量、第二数量、第三数量、第四数量、第五数量、第六数量、第七数量、第八数量的取值为大于等于1小于等于8的一个整数。例如：第一数量可以取1，上述表5所示的映射关系仅示出的是所有对应关系。
进一步地，上述资源单元分配子字段与分段组合以及STA数量的映射关系是可以变换的，并不局限于本申请实施例所列举出来的情形，例如，还可以是：当资源单元分配子字段为第一数值时，分段组合为Part1和Part3的组合，以及用户数为第一数量；当资源单元分配子字段为第二数值时，分段组合为Part1和Part2的组合，以及用户数为第一数量。可以理解的，其他替换的情形，也在本申请实施例的保护范围之内。表格中使用的分段标识为分段的逻辑标识，通常来说，分段标识1(Part1)指代包含主20MHz信道的频率最低的80MHz信道，分段标识2(Part2)指代近邻Part1的频率次低的80MHz信道，分段标识3(Part3)指代近邻Part2的频率较高的80MHz信道；分段标识4(Part4)指代近邻Part3的频率最高的80MHz信道。上述描述为分段标识与信道的一种常用的映射关系。分段标识与信道还存在其他的映射关系，本申请对此不作限定。
并且，上表为穷举了4个分段的所有可能的组合情况，在实际应用中，可能只包括上表中所涉及的所有可能的组合情况中的一部分。一个示例中，资源单元分配子字段可以是频域连续的分段的组合。举例来说，可以是只包括上述11种组合情况中的6种，分别为：Part1+Part2、Part2+Part3、Part3+Part4、Part1+Part2+Part3、Part2+Part3+Part4、Part1+Part2+Part3+Part4。
举例来说，资源单元分配子字段的取值与所指示的分段组合RU以及用户数的对应关系的一种例子如表6所示：
表6
Figure PCTCN2019093178-appb-000008
Figure PCTCN2019093178-appb-000009
Figure PCTCN2019093178-appb-000010
其中，x 4x 3x 2x 1x 0为0和1的排列组合，x 4x 3x 2x 1x 0的取值可以为32种组合(00000到11111)中的任一种，例如：x 4x 3x 2x 1x 0为0000。同样的，x 7x 6x 5x 4x 3x 2x 1x 0为0和1的排列组合，x 7x 6x 5x 4x 3x 2x 1x 0的取值可以256种组合(00000000到11111111)中的任一种，例如：x 7x 6x 5x 4x 3x 2x 1x 0为00000000。
需要说明的是，可以看出若仍然采用8比特的指示，则预留条目不足以指示所有情况，因此可以指示以上部分情况。另一种实施例方式中，可以将资源单元分配子字段从8比特扩展到9比特(表6括号中的0或1表示增加了1位)，当资源单元分配子字段为9比特时，其可以对应表6中所列举的所有对应关系。进一步地，在该分段组合进行数据传输的用户数可以进一步扩展到大于8个用户数，如16个用户。
可选地，分段组合包括：资源单元分配子字段对应的分段。例如：资源单元分配子字段对应的分段为Part1，则分段组合可以为Part1+Part2，Part1+Part3，Part1+Part4、Part1+Part2+Part3等。因此可以针对不同的分段设计不同的资源指示方法，如表7所示，资源单元分配子字段指示的分段组合包含资源单元分配子字段所对应的分段，这样可以进一步降低资源开销。
表7
Figure PCTCN2019093178-appb-000011
Figure PCTCN2019093178-appb-000012
其中，Part1、Part2、Part3、Part4为所述四个不同的分段。
可选地，第一数值、所述第二数值、所述第三数值、所述第四数值、所述第五数值、所述第六数值、所述第七数值、所述第八数值、所述第九数值、所述第十数值的长度均为9比特。也就是说，该资源单元分配子字段可以为9比特。
可选地，表7中的第一数量、第二数量、第三数量、第四数量、第五数量、第六数量、第七数量、第八数量、第九数量、第十数量、第十一数量的取值为大于等于1小于等于8的一个整数。例如：第一数量可以取1，上述表7所示的映射关系仅示出的是部分对应关系，例如：还可以对表7进行扩展，例如包括：第十一数值，对应的分段组合以及用户数为：Part1+Part2，第十一数量，该第十一数量可以为2。
举例来说，资源单元分配子字段的取值与所指示的分段组合RU以及STA数量的对应关系的一种例子如表8所示：
表8
Figure PCTCN2019093178-appb-000013
Figure PCTCN2019093178-appb-000014
基于此，针对320MHz的传输带宽，现有802.11ax中每个CC上包括8个242-tone RU范围内的资源单元分配子字段，而在示例一的第二种方式中，由于AP针对分段进行资源指示，每个CC上仅包括2个242-tone RU范围内的资源单元分配子字段，因此本申请提供的指示方式相比于802.11ax中的指示方式，其资源开销减少到了四分之一，进一步地，由于资源单元分配子字段指示的分段组合包含资源单元分配子字段所对应的分段，这样可以进一步降低资源开销。
第三种方式：以压缩模式指示分段组合，具体地，PPDU包括：每个分段对应的EHT-SIG-A和每个分段对应的EHT-SIG-B，该EHT-SIG-A携带指示所属分段采用压缩模式的指示信息，该EHT-SIG-B包括：资源单元分配子字段，该资源单元分配子字段用于指示分段组合。可选的，示例性地，图17为本申请一实施例提供的基于分段组合的EHT-SIG-B的示意图，如图17所示，该EHT-SIG-B在CC1和CC2上均包括：资源单元分配子字段，其用于指示分段组合。进一步地，EHT-SIG-B在CC1和CC2上还包括：指示信息，该指示信息用于指示在该分段组合进行数据传输的STA的数量。或者，EHT-SIG-B在CC1和CC2上分别包括：第一指示信息和第二指示信息，该第一指示信息和第二指示信息用于联合指示在该分段组合进行数据传输的STA的数量。
进一步地，资源单元分配子字段如表9所示，指示部分或者所有可能的分段组合。可选地，还可以包括上述指示信息。另外，该指示信息也可以和资源单元分配子字段进行融合，以实现统一指示。其中所述全部分段代表该STA所分配的整个分段作为1个RU分配给STA。
表9
资源单元分配子字段 分段组合RU
第一数值 所属全部分段
第二数值 Part1+Part2
第三数值 Part1+Part3
第四数值 Part1+Part4
第五数值 Part2+Part3
第六数值 Part2+Part4
第七数值 Part3+Part4
第八数值 Part1+Part2+Part3
第九数值 Part1+Part2+Part4
第十数值 Part1+Part3+Part4
第十一数值 Part2+Part3+Part4
第十二数值 Part1+Part2+Part3+Part4
其中，Part1、Part2、Part3、Part4为所述四个不同的分段。
可选地，第一数值、所述第二数值、所述第三数值、所述第四数值、所述第五数值、所述第六数值、所述第七数值、所述第八数值、所述第九数值、所述第十二数值的长度均为8比特。也就是说，该资源单元分配子字段可以为8比特。
举例来说，资源单元分配子字段的取值与所指示的分段组合RU对应关系的一种例子如表10所示：
表10
资源单元分配子字段 分段组合
0000 所属全部分段
0001 Part1+Part2
0010 Part1+Part3
0011 Part1+Part4
0100 Part2+Part3
0101 Part2+Part4
0110 Part3+Part4
0111 Part1+Part2+Part3
1000 Part1+Part2+Part4
1001 Part1+Part3+Part4
1010 Part2+Part3+Part4
1011 Part1+Part2+Part3+Part4
在示例一的第三种方式中，由于采用了压缩模式的指示方式，从而可以降低资源开销。进一步地，在该方式中还设计了对于分段组合的指示方法。
示例二：以PPDU的传输带宽为320MHz，M＝2(以160MHz为一个分段单位，将整个带宽分为2个分段)为例，对资源单元指示方法进行说明：
图18为本申请一实施例提供的以160MHz为分段单位的320Mhz带宽的示意图，如图18所示，320Mhz带宽被划分为两个分段，分别是：Part1和Part2。其中，每个分段包括：两个分片(以80MHz为分片单位)，而在每个分段，都会为所属分段的STA配置相应的P20，S20，S40，S80信道。整个带宽可以看做存在两个(临时)P20信道。每个分段包括2个CC或4个CC。例如图19中每个分段包括2个CC，图20中每个分段包括4个CC，其中图19为本申请一实施例提供的以160MHz为分段单位(两个CC)的EHT-SIG-B的示意图，图20为本申请一实施例提供的以160MHz为分段单位(四个CC)的EHT-SIG-B的示意图。
对于资源单元分配子字段，当STA被分配的RU尺寸小于等于2*996-tone(即分段单位为160MHz中的最大RU)时，采用表2所示的相应条目指示资源单元指示方式，其中需要补充2*996-tone的RU指示，具体见表11：
表11
Figure PCTCN2019093178-appb-000015
当STA被分配的RU尺寸大于2*996-tone RU时，可以通过如下任一个方式进行资源指示。
第一种方式，利用预留(Reserved)字段指示部分或全部的分片组合，具体地，当资源单元分配子字段所指示的RU为分片组合时，资源单元分配子字段与分片组合RU的对应关系包括如表12所示的至少一个条目：
表12
资源单元分配子字段 分片组合RU
第一数值 Seg1+Seg2+Seg3
第二数值 Seg1+Seg2+Seg4
第三数值 Seg1+Seg3+Seg4
第四数值 Seg2+Seg3+Seg4
第五数值 Seg1+Seg2+Seg3+Seg4
其中，Seg1、Seg2、Seg3、Seg4为所述四个不同的分片。
可选地，第一数值、所述第二数值、所述第三数值、所述第四数值、所述第五数值的长度均为8比特。也就是说，该资源单元分配子字段可以为8比特。
需要说明的是，上述资源单元分配子字段与分片组合的映射关系是可以变换的，并不局限于本申请实施例所列举出来的情形，例如，还可以是：当资源单元分配子字段为第一数值时，分片组合为Seg1、Seg2和Seg4的组合；当资源单元分配子字段为第二数值时，分片组合为Seg1、Seg2和Seg3的组合。可以理解的，其他替换的情形，也在本申请实施例的保护范围之内。表格中使用的分片标识为分片的逻辑标识，通常来说，分片标识1(Seg1)指代包含主20MHz信道的频率最低的80MHz信道，分片标识2(Seg2)指代近邻Seg1的频率次低的80MHz信道，分片标识3(Seg3)指代近邻Seg2的频率较高的80MHz信道；分片标识4(Seg4)指代近邻Seg3的频率最高的80MHz信道。上述描述为分片标识与信道的一种常用的映射关系。分片标识与信道还存在其他的映射关系，本申请对此不作限定。
并且，上表为穷举了4个分片的所有可能的组合情况，在实际应用中，可能只包括上表中所涉及的所有可能的组合情况中的一部分组合情况。一个示例中，资源单元分配子字段可以是频域连续的分片的组合。举例来说，可以是只包括上述5种组合情况中的2种，分别为：Seg1+Seg2+Seg3、Seg1+Seg2+Seg4。
举例来说，资源单元分配子字段的取值与所指示的分片组合RU的对应关系的一种例子如表13所示：
表13
Figure PCTCN2019093178-appb-000016
Figure PCTCN2019093178-appb-000017
如上所述，资源单元分配子字段用于指示为至少一个STA分配的RU，进一步地，EHT-SIG-B中还可以包括指示信息，该指示信息用于指示所述至少一个STA的数量，即在资源单元分配子字段所指示的RU上进行数据传输的STA的数量(用户数)。更进一步地，当资源单元分配子字段所指示的RU为分片组合时，指示信息的携带方式包括如下两种情况：
第一种情况：对于每个分片，它所包括的每个CC都携带指示信息，该指示信息用于指示的在资源单元分配子字段所指示的分片组合RU上进行数据传输的STA的数量。
第二种情况：对于一个分片，假设它包括CC1和CC2，其中CC1上可以携带第一指示信息，CC2上携带第二指示信息，第一指示信息和第二指示信息联合指示在资源单元分配子字段所指示的分片组合RU上进行数据传输的STA的数量，比如可以是第一指示信息所指示的STA的数量与第二指示信息所指示的STA的数量之和。
以资源单元分配子字段指示的RU包括Seg1+Seg2的组合为例进行说明，
图21本申请一实施例提供的基于分片组合的EHT-SIG-B的示意图，如图21所示，该EHT-SIG-B包括：用于指示分片组合Seg1+Seg2的资源单元分配子字段以及指示信息，该指示信息用于指示通过Seg1+Seg2进行数据传输的STA的数量。需要说明的是：由于EHT-SIG-B已经包括：用于指示分片组合Seg1+Seg2的资源单元子字段，因此对于第2、3、4、5、6、7和8个242-tone RU的资源单元分配子字段(图中用虚线框表示)无需重复指示分片组合Seg1+Seg2。当然，为了保证字段格式一致，第2、3、4、5、6、7及8个242-tone RU的资源单元分配子字段也可以重复指示分片组合Seg1+Seg2，本申请对此不做限制。而中间26-tone RU此时并不存在，因此可以置0，表示该26-tone RU没有被单独分配给任何一个STA。
基于此，针对320MHz的传输带宽，现有802.11ax中每个CC上包括8个242-tone RU范围内的资源单元分配子字段，而在示例二的第一种方式中，由于AP针对分片进行资源指示，每个CC上仅包括4个242-tone RU范围内的资源单元分配子字段，因此本申请提供的指示方式相比于802.11ax中的指示方式，其资源开销减少到了二分之一。
第二种方式，资源单元分配子字段除了用于指示分片组合RU之外，还用于指示在该分片组合RU上进行数据传输的STA的数量。其中，资源单元分配子字段与分片组合RU以及在该分片组合上进行数据传输的STA的数量的对应关系包括以下至少一个条目，具体见表14：
表14
资源单元分配子字段 分片组合RU以及用户数
第一数值 Seg1+Seg2+Seg3，第一数量
第二数值 Seg1+Seg2+Seg4，第二数量
第三数值 Seg1+Seg3+Seg4，第三数量
第四数值 Seg2+Seg3+Seg4，第四数量
第五数值 Seg1+Seg2+Seg3+Seg4，第五数量
其中，Seg1、Seg2、Seg3、Seg4为所述四个不同的分片。
可选地，第一数值、所述第二数值、所述第三数值、所述第四数值、所述第五数值的长度均为9比特。也就是说，该资源单元分配子字段可以为9比特。
可选地，表14中的第一数量、第二数量、第三数量、第四数量、第五数量的取值为大于等于1小于等于8的一个整数。例如：第一数量可以取1，上述表14所示的映射关系仅示出的是部分对应关系，例如：还可以对表14进行扩展，例如包括：第六数值，对应的分片组合以及STA数量为：Seg1+Seg2+Seg3，第六数量，该第六数量可以为2。
进一步地，上述资源单元分配子字段与分片组合以及STA数量的映射关系是可以变换的，并不局限于本申请实施例所列举出来的情形，例如，还可以是：当资源单元分配子字段为第一数值时，分片组合为Seg1、Seg3以及Seg4的组合，以及STA的数量为第七数量；当资源单元分配子字段为第二数值时，分片组合为Seg1、Seg2以及Seg3的组合，以及STA的数量为第八数量。可以理解的，其他替换的情形，也在本申请实施例的保护范围之内。表格中使用的分片标识为分片的逻辑标识，通常来说，分片标识1(Seg1)指代包含主20MHz信道的频率最低的80MHz信道，分片标识2(Seg2)指代近邻Seg1的频率次低的80MHz信道，分片标识3(Seg3)指代近邻Seg2的频率较高的80MHz信道；分片标识4(Seg4)指代近邻Seg3的频率最高的80MHz信道。上述描述为分片标识与信道的一种常用的映射关系。分片标识与信道还存在其他的映射关系，本申请对此不作限定。
并且，上表为穷举了4个分片的部分可能的组合情况，在实际应用中，可能只包括上表中所涉及的所有可能的组合情况中的一部分或者涉及表14以外的对应关系。一个示例中，资源单元分配子字段可以是频域连续的分片的组合。举例来说，可以是只包括上述5种组合情况中的2种，分别为：Seg1+Seg2+Seg3、Seg1+Seg2+Seg3+Seg4。
举例来说，资源单元分配子字段的取值与所指示的分片组合RU以及STA数量的对应关系的一种例子如表15所示：
表15
Figure PCTCN2019093178-appb-000018
Figure PCTCN2019093178-appb-000019
需要说明的是，可以看出若仍然采用8比特的指示，则预留条目不足以指示所有情况，因此可以指示以上部分情况。另一种实施例方式中，可以将资源单元分配子字段从8比特扩展到9比特(表15括号中的0或1表示增加了1位)，当资源单元分配子字段为9比特时，其可以对应表15中所列举的所有对应关系。进一步地，在该分片组合进行数据传输的用户数可以进一步扩展到大于8个用户数，如16个用户。
可选地，分片组合包括：资源单元分配子字段对应的分片。例如：资源单元分配子字段对应的分片为Seg1，则该资源单元分配子字段指示的分片组合不会是Seg2+Seg3+Seg4，而位于Seg4的STA不会被分配到Seg1+Seg2+Seg3。因此可以针对不同的分片设计不同的表，如表16所示，资源单元分配子字段指示的分片组合包含资源单元分配子字段所对应的分片，这样可以进一步降低资源开销。
表16
Figure PCTCN2019093178-appb-000020
其中，Seg1、Seg2、Seg3、Seg4为所述四个不同的分片。
可选地，第一数值、所述第二数值、所述第三数值、所述第四数值、所述第五数值的长度均为9比特。也就是说，该资源单元分配子字段可以为9比特。
可选地，表16中的第一数量、第二数量、第三数量、第四数量、第五数量的取值为大于等于1小于等于8的一个整数。例如：第一数量可以取1，上述表16所示的映射关系仅示出的是部分对应关系，例如：还可以对表16进行扩展，例如包括：第六数值，对应的分片组合以及STA数量为：Seg1+Seg2+Seg3，第七数量，该第七数量可以为2。
举例来说，资源单元分配子字段的取值与所指示的分片组合RU以及STA数量的对应关系的一种例子如表17所示：
表17
Figure PCTCN2019093178-appb-000021
Figure PCTCN2019093178-appb-000022
基于此，针对320MHz的传输带宽，现有802.11ax中每个CC上包括8个242-tone RU范围内的资源单元分配子字段，而在示例二的第二种方式中，由于AP针对分片进行资源指示，每个CC上仅包括4个242-tone RU范围内的资源单元分配子字段，因此本申请提供的指示方式相比于802.11ax中的指示方式，其资源开销减少到二分之一，进一步地，由于资源单元分配子字段指示的分片组合包含资源单元分配子字段所对应的分片，这样可以进一步降低资源开销。
第三种方式以压缩模式指示分段组合，具体地，PPDU包括：每个分段对应的EHT-SIG-A和每个分段对应的EHT-SIG-B，该EHT-SIG-A携带指示所属分段采用压缩模式的指示信息，该EHT-SIG-B包括：资源单元分配子字段，该资源单元分配子字段用于指示分段组合。可选的，示例性地，图22为本申请一实施例提供的基于分片组合的EHT-SIG-B的示意图，如图22所示，该EHT-SIG-B在CC1和CC2上均包括：资源单元分配子字段，其用于指示分片组合。进一步地，EHT-SIG-B在CC1和CC2上还包括：指示信息，该指示信息用于指示在该分片组合进行数据传输的STA的数量。或者，EHT-SIG-B在CC1和CC2上分别包括：第一指示信息和第二指示信息，该第一指示信息和第二指示信息用于联合指示在该分片组合进行数据传输的STA的数量。
进一步地，资源单元分配子字段，如表18所示，指示部分或者所有可能的分片组合。可选地，还可以包括上述指示信息。另外，该指示信息也可以和分片组合的指示子字段进行融合，以实现统一指示。其中所述全部分片代表该STA所分配的整个分片作为1个RU分配给STA。
表18
资源单元分配子字段 分片组合
第一数值 所属全部分片
第二数值 Seg1+Seg2+Seg3
第三数值 Seg1+Seg2+Seg4
第四数值 Seg1+Seg3+Seg4
第五数值 Seg2+Seg3+Seg4
第六数值 Seg1+Seg2+Seg3+Seg4
其中，Seg1、Seg2、Seg3、Seg4为所述四个不同的分片。
可选地，第一数值、所述第二数值、所述第三数值、所述第四数值、所述第五数值、所述第六数值的长度均为8比特。也就是说，该资源单元分配子字段可以为8比特。
可以理解的，上表列举出了分片的所有可能组合，实际应用中，也可以只采用所有可能 组合中的一部分。
举例来说，资源单元分配子字段的取值与所指示的分片组合RU对应关系的一种例子如表19所示：
表19
资源单元分配子字段 分片组合
000 所属全部分片
001 Seg1+Seg2+Seg3
010 Seg1+Seg2+Seg4
011 Seg1+Seg3+Seg4
100 Seg2+Seg3+Seg4
101 Seg1+Seg2+Seg3+Seg4
在示例一的第三种方式中，由于采用了压缩模式的指示方式，从而可以降低资源开销。进一步地，在该方式中还设计了对于分片组合的指示方法。
实施例二
如实施例一所述，PPDU包含每个分段对应的EHT-SIG-A(即实施例一和实施例二中的第二字段，或者，对于分段包括多个CC的情况，EHT-SIG-A包括该第二字段)和每个分段对应的EHT-SIG-B(即下面实施例一和实施例二中的第一字段，或者，对于分段包括多个CC的情况，EHT-SIG-B包括该第一字段)，以第二字段是EHT-SIG-A，第一字段是EHT-SIG-B为例，M个EHT-SIG-A与M个EHT-SIG-B一一对应，其中该EHT-SIG-A包括以下至少一项信息：EHT-SIG-A对应的EHT-SIG-B的符号数、该EHT-SIG-B的MCS、该EHT-SIG-B的压缩模式，该PPDU的传输带宽、基本服务集合颜色、保护间隔和长训练序列尺寸。
具体地，图23为本申请一实施例提供的分片上的EHT-SIG-A的示意图，如图23所示，其中该PPDU整个传输带宽以80MHz或者160Mhz为单位分成M个分段。AP在每个分段分别发送内容相同或者不同的EHT-SIG-A。在按照多个分段发送的PPDU中，相比于现有技术完全复制的EHT-SIG-A，每个分段的EHT-SIG-A可以指示不同的内容，例如：
EHT-SIG-B的MCS：可以按照每个分段EHT-SIG-B中的信息数，信道的质量好坏，设置不同的EHT-SIG-B MCS。
基本服务集合颜色：即AP所在基本服务集合的标识，不同的分段可以看做不同的基本服务集合，可以指示不同的基本服务集合颜色。
EHT-SIG-B压缩模式：根据每个分端的EHT-SIG-B是否为分段组合或者分片组合或者占据整个分段，来设置压缩模式。
另外，不同的分段还可以具有相同的EHT-SIG-A的参数：
EHT-SIG-B符号数：保证各部分EHT-SIG-B对齐。
PPDU的带宽：统一指示成整个PPDU的带宽。
保护间隔和长训练序列尺寸：设置成相同的值，保证各个分段的EHT-LTF的保护间隔和长训练序列对齐，保证符号级别的对齐。
总之，本申请提供一种资源单元指示方法，包括M个EHT-SIG-A，利用EHT-SIG-A按照每个分段进行指示和传输方法，支持按照分段进行数据传输，该方法适合于STA支持最大带宽，能力较小的情况。
实施例三
实施例一提供的是基于DL OFDMA及DL MU MIMO的资源单元指示方法。实施例三将提供基于触发帧的资源单元指示方法。具体地，图24为本申请一实施例提供的一种资源单元指示方法的流程图，如图24所示，该方法包括如下步骤：
步骤S2401：AP生成PPDU，该PPDU包括M个触发帧，M为大于1的整数；可选地，M个触发帧包括至少两个广播触发帧，PPDU的传输带宽被划分为M个分段，传输带宽大于或等于40MHz，M个触发帧与M个分段一一对应，触发帧包括：第一字段，该第一字段在触发帧对应的分段上传输，第一字段用于指示AP为所述多个STA中的至少一个STA分配的RU。
步骤S2402：AP向多个STA发送PPDU。
接收到该PPDU的站点，可以根据第一字段，进行上行数据传输。具体来说，接收到该PPDU的站点，根据第一字段可以确定该STA的可以在哪一个RU中发送上行数据，进一步的，该STA可以在对应的RU上向AP发送上行数据。
具体地，可以将PPDU的传输带宽以80MHz为分段单位分成若干个分段。其中，每个触发帧用于触发STA进行上行传输。其中每个分段上的资源单元分配子字段(可以理解为本实施例中的第一字段)为其所属的STA单独指示资源单元分配情况。例如：图25为本申请一实施例提供的以80MHz为分段单位的4个触发帧中包括的公共字段和逐个站点字段的示意图，如图25所示，其中每个触发帧包括公共字段和逐个站点字段。可选地，该公共字段包括：上行空时块编码、AP发射功率、PPDU扩展、上行空间复用、上行HE-SIG-A预留。基于触发帧类型的公共信息以及预留字段等。逐个站点字段包括：关联标识、资源单元分配子字段、上行编码类型、上行双载波调制、空间流数/随机竞争资源单元信息、接收信号强度指示以及基于触发帧类型的站点信息等字段。
进一步地，AP可以通过如下几种方式传输触发帧：
方式1：利用HE或EHT MU PPDU，即利用不同的RU传输不同分段中的触发帧。
方式2：采用FDMA方式，在不同的分段传输各自的PPDU，其中每个PPDU携带相应分片的触发帧。
对于资源单元分配子字段，当资源单元分配子字段所指示的RU小于或等于资源单元分配子字段对应的分段包括的最大RU时，采用如上述表2所示的资源单元子字段进行资源指示。
可选地，当资源单元分配子字段所指示的RU大于该资源单元分配子字段对应的分段所包括的最大RU时，所述资源单元分配子字段所指示的RU为多个所述分段构成的分段组合，或者，所述资源单元分配子字段所指示的RU为多个所述分段所包括的全部或部分分片构成的分片组合。
更进一步地，当传输带宽为320MHz，M＝4时，资源单元分配子字段指示的RU为分段组合(在以80MHz为划分单位的情况下，该分段组合也被称为分片组合)，一个分段包括2个80MHz的分片，相应的，资源单元分配子字段与分段组合的对应关系包括如表20所示的以下至少一个条目：
表20
资源单元分配子字段 分段组合RU
第一数值 Part1+Part2
第二数值 Part1+Part3
第三数值 Part1+Part4
第四数值 Part2+Part3
第五数值 Part2+Part4
第六数值 Part3+Part4
第七数值 Part1+Part2+Part3
第八数值 Part1+Part2+Part4
第九数值 Part1+Part3+Part4
第十数值 Part2+Part3+Part4
第十一数值 Part1+Part2+Part3+Part4
其中，Part1、Part2、Part3、Part4为所述四个不同的分段。
可选地，第一数值、第二数值、第三数值、第四数值、第五数值、第六数值、第七数值、第八数值、第九数值、第十数值以及第十一数值的长度均为8比特。也就是说，该第一字段可以为8比特。
需要说明的是，上述资源单元分配子字段与分段组合的映射关系是可以变换的，并不局限于本申请实施例所列举出来的情形，例如，还可以是：当资源单元分配子字段为第一数值时，分段组合为Part1和Part3的组合；当资源单元分配子字段为第二数值时，分段组合为Part1和Part2的组合。可以理解的，其他替换的情形，也在本申请实施例的保护范围之内。表格中使用的分段标识为分段的逻辑标识，通常来说，分段标识1(Part1)指代包含主20MHz信道的频率最低的80MHz信道，分段标识2(Part2)指代近邻Part1的频率次低的80MHz信道，分段标识3(Part3)指代近邻Part2的频率较高的80MHz信道；分段标识4(Part4)指代近邻Part3的频率最高的80MHz信道。上述描述为分段标识与信道的一种常用的映射关系。分段标识与信道还存在其他的映射关系，本申请对此不作限定。
并且，上表为穷举了4个分段的所有可能的组合情况，在实际应用中，可能只包括上表中所涉及的一部分组合情况。一个示例中，资源单元分配子字段可以是频域连续的分段的组合。举例来说，可以是只包括上述11种组合情况中的6种，分别为：Part1+Part2、Part2+Part3、Part3+Part4、Part1+Part2+Part3、Part2+Part3+Part4、Part1+Part2+Part3+Part4。
其中，本申请实施例还提供了资源单元分配子字段与分段组合RU之间的对应关系，一种例子如表21所示：
表21
Figure PCTCN2019093178-appb-000023
Figure PCTCN2019093178-appb-000024
可以理解的，上述资源单元分配子字段的不同取值与不同的分段组合的对应关系是可以置换的，不限于表21给出的这一种对应关系。
需要说明的是，可以看出因为每个分段只需要为其所属分段的资源单元分配进行指示，因此不需要指示是哪一个80MHz。因此可以不额外传输1比特，或者将该比特置为预留比特，用于后续用途。
当传输带宽为320MHz，M＝4时，在同等带宽情况下，本申请中的触发帧开销相比于现有技术缩小为四分之一。进一步地，本申请中的触发帧可以进一步指示跨分段的分段组合。
当传输带宽为320MHz，M＝2时，资源单元分配子字段指示的RU为分片组合，相应的，资源单元分配子字段与分片组合的对应关系包括如表22所示的以下至少一个条目：
表22
资源单元分配子字段 分片组合RU
第一数值 Seg1+Seg2+Seg3
第二数值 Seg1+Seg2+Seg4
第三数值 Seg1+Seg3+Seg4
第四数值 Seg2+Seg3+Seg4
第五数值 Seg1+Seg2+Seg3+Seg4
其中，Seg1、Seg2、Seg3、Seg4为所述四个不同的分片。
可选地，第一数值、第二数值、第三数值、第四数值、第五数值的长度均为8比特。也就是说，该资源单元分配子字段可以为8比特。
需要说明的是，上述资源单元分配子字段与分片组合的映射关系是可以变换的，并不局限于本申请实施例所列举出来的情形，例如，还可以是：当资源单元分配子字段为第一数值时，分片组合为Seg1、Seg2、Seg4的组合；当资源单元分配子字段为第二数值时，分片组合为Seg1、Seg2、Seg3的组合。可以理解的，其他替换的情形，也在本申请实施例的保护范围之内。
并且，上表为穷举了4个分片的部分或所有可能的组合情况，在实际应用中，可能只包括上表中所涉及的一部分组合情况。一个示例中，资源单元分配子字段指示的可以是频域连续的分片的组合。举例来说，可以是只包括上述5种组合情况中的2种，分别为：Seg1+Seg2+Seg3、Seg1+Seg2+Seg3+Seg4。
其中，本申请实施例还提供了资源分配子字段与分片组合RU之间的对应关系，一种例子如表23所示：
表23
Figure PCTCN2019093178-appb-000025
当传输带宽被以160MHz为单元划分为M个分段，且第一字段所指示的RU小于或等于996-tone RU时，触发帧还包括：第二字段；当第二字段为第一值时，第一字段所指示的RU属于该触发帧对应的分段中的主80MHz，当第二字段为第二值时，所述第二值用于指示所述RU属于所述触发帧对应的分段中的从80MHz。
或者，
当所述第二字段为第一值时，所述第一值用于指示所述RU属于所述触发帧对应的分段中的低频80MHz；当所述第二字段为第二值时，所述第二值用于指示所述RU属于所述触发帧对应的分段中的高频80MHz。
当传输带宽为320MHz，M＝2时，在同等带宽情况下，本申请中的触发帧开销相比于现有技术缩小为二分之一。进一步地，本申请中的触发帧可以进一步指示跨分段的分段组合。
可选地，AP为其所属分段的STA指示RU时，其所指示的RU不限于其所属的分段，而是可以进一步扩展到整个带宽。在表14的基础上，进一步引入两比特，指示80MHz具体为320Mhz的哪一个。
具体地，当传输带宽为320Mhz时，所述触发帧还包括：第三字段；该第三字段可以包括2个比特。
当第三字段为第一值，且所述RU小于或等于996-tone RU时，第一值用于指示RU属于传输带宽中的最低频80MHz；当第三字段为第二值，且所述RU小于或等于996-tone RU时，第二值用于指示RU属于传输带宽中的次低频80MHz；当第三字段为第三值，且所述RU小于或等于996-tone RU时，第三值用于指示RU属于传输带宽中的次高频80MHz；当第三字段为第四值，且所述RU小于或等于996-tone RU时，第四值用于指示RU属于传输带宽中的最高频80MHz。
或者，
当第三字段为第一值，且所述RU小于或等于996-tone RU时，第一值用于指示RU属于传输带宽中的主80MHz；当第三字段为第二值，且所述RU小于或等于996-tone RU时，第二值用于指示RU属于传输带宽中的第一从80MHz；当第三字段为第三值，且所述RU小于或等于996-tone RU时，第三值用于指示RU属于传输带宽中的第二从80MHz；当第三字段为第四值，且所述RU小于或等于996-tone RU时，第四值用于指示RU属于传输带宽中的第三从80MHz。
例如：第三字段所表示的意义见表23所示。
表23
Figure PCTCN2019093178-appb-000026
可选地，该第一数值、第二数值、第三数值和第四数值的长度均为2比特。表24为第三字段所表示的意义的一种示例。
表24
Figure PCTCN2019093178-appb-000027
Figure PCTCN2019093178-appb-000028
进一步地，STA接收到对应分段上的触发帧之后，可以根据第三字段确定触发帧承载在哪一个80MHz的信道上，并根据触发帧中携带的第一字段确定AP分配给自身的RU，并在该RU上进行上行数据传输。
基于此，相比于现有技术减少开销的基础上，每个站点只增加1比特，实现更加灵活的资源单元的指示方法。
实施例四
在实施例一、实施例二或实施例三的基础之上，本申请所提供的分段可以不都有数据传输，即AP可以在部分分段中不传输任何数据，例如：图26为本申请一实施例提供的在部分分段上传输EHT PPDU的示意图，如图26所示，分段2中不传输任何数据。该情况适用于某些分片中存在干扰的情况，基于此，可以充分利用信道资源。
另外一个示例，在部分分段中传输非EHT数据，例如：图27为本申请一实施例提供的在部分分段上传输非EHT PPDU的示意图，如图27所示，比如AP在主20MHz所在的分段传输HE PPDU，而在其他分段传输EHT PPDU。
综上，本申请通过这两个示例可以实现数据传输的灵活性。
实施例五
图28示出了本申请实施例的接入点侧的装置2800的示意性框图。在一个实施例中，图28所示的装置2800可以对应于上述方法实施例中的接入点的装置，可以具有方法中涉及的接入点的功能，可选地，本申请实施例的装置2800可以是接入点，也可以是接入点内的芯片。该装置2800可以包括处理模块2810和收发模块2820，可选的，该装置2800还可以包括存储模块2830。
例如，该处理模块2810，可以用于生成前述方法实施例中发送的信令或数据信息，例如，用于执行步骤S1201、S2301。
该收发模块2820，收发模块用于支持接入点AP与站点，以及其他节点之间的通信。可以理解的，收发模块可以包括接收模块和发送模块。其中，发送模块可以用于执行前述方法实施例中的步骤S1202、S2402。
应理解，根据本申请实施例的装置2800可对应于前述的实施例的各方法中的接入点，并且装置2800中的各个模块的上述和其它管理操作和/或功能分别为了实现前述各个方法的相应步骤，为了简洁，在此不再赘述。
可以替换的，装置2800也可配置成通用处理系统，例如通称为芯片，该处理模块2810可以包括：提供处理功能的一个或多个处理器；所述收发模块2820例如可以是输入/输出接口、管脚或电路等，输入/输出接口可用于负责此芯片系统与外界的信息交互，例如，此输入/输出接口可将处理模块2810生成的信令或数据信息输出给此芯片外的其他模块进行处理。该处理模块可执行存储模块中存储的计算机执行指令以实现上述方法实施例中接入点的功能。在一个示例中，装置2800中可选的包括的存储模块2830可以为芯片内的存储单元，如寄存器、缓存等，所述存储模块2830还可以是位于芯片外部的存储单元，如只读存储器(read-only memory，简称ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，简称RAM)等。
在另一个示例中，图29示出了本申请实施例的另一种接入点侧的通信装置2900的示意性框图。本申请实施例的装置2900可以是上述方法实施例中的接入点，装置2900可以用于执行上述方法实施例中的接入点的部分或全部功能。该装置2900可以包括：处理器2910，基带电路2930，射频电路2940以及天线2950，可选的，该装置2900还可以包括存储器2920。装置2900的各个组件通过总线2960耦合在一起，其中总线系统2960除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图中将各种总线都标为总线系统2960。
处理器2910可用于实现对接入点的控制，用于执行上述实施例中由接入点进行的处理，可以执行上述方法实施例中涉及接入点的处理过程和/或用于本申请所描述的技术的其他过程，还可以运行操作系统，负责管理总线以及可以执行存储在存储器中的程序或指令。
基带电路2930、射频电路2940以及天线2950可以用于支持接入点和站点之间收发信息，以支持接入点与其他节点之间进行无线通信。例如，PPDU可由处理器2910进行处理，经由基带电路2930进行按协议封装，编码等基带处理，进一步由射频电路2940进行模拟转换、滤波、放大和上变频等射频处理后，经由天线2950发送给站点。可以理解的，基带电路2930、射频电路2940以及天线2950还可以用于支持接入点与其他网络实体进行通信，例如,用于支持接入点与核心网侧的网元进行通信。
存储器2920可以用于存储接入点的程序代码和数据，存储器2920可以是图28中的存储模块2830。图29中存储器2920被示为与处理器2910分离，然而，本领域技术人员很容易明白，存储器2920或其任意部分可位于装置2900之外。举例来说，存储器2920可以包括传输线、和/或与无线节点分离开的计算机制品，这些介质均可以由处理器2910通过总线接口2960来访问。可替换地，存储器2920或其任意部分可以集成到处理器2910中，例如，可以是高速缓存和/或通用寄存器。
一个示例中，图28中的收发模块2820可以包括基带电路2930，射频电路2940，天线2950；处理模块2810可以是处理器2910；另一个示例中，图28中的收发模块2820可以仅包括图29中的天线，处理模块2810可以既包括处理器2910，还包括射频电路2940和基带电路2930；又一个示例中，图28中处理模块2810可以包括处理器2910，和，基带电路2930；收发模块2820可以包括射频电路2940和天线2950。
可以理解的是，图29仅仅示出了接入点的简化设计。例如，在实际应用中，接入点可以包含任意数量的发射器，接收器，处理器，存储器等，而所有可以实现本发明的接入点都在本发明的保护范围之内。
本申请实施例还提供一种计算机存储介质，该计算机可读存储介质中存储有指令，所述指令可以由处理电路上的一个或多个处理器执行。当其在计算机上运行时，使得计算机执行上述各实施例中的方法。
实施例六
图30示出了本申请实施例的站点侧的装置3000的示意性框图。在一个实施例中，图30所示的装置3000可以对应于上述方法实施例中的站点的装置，可以具有方法中涉及的站点的功能，可选地，本申请实施例的装置3000可以是站点点，也可以是站点点内的芯片。该装置3000可以包括处理模块3010和收发模块3020，可选的，该装置3000还可以包括存储模块3030。
例如，该收发模块3020，收发模块用于支持站点STA与接入点AP，以及其他节点之间的通信。可以理解的，收发模块可以包括接收模块和发送模块。其中，接收模块可以用于接收前述方法实施例中的步骤S1202、S2402中发送的PPDU。
该处理模块3010，可以用于根据前述方法实施例中的信令信息，例如第一字段，第二字段解析前述由接收模块收到的PPDU。
应理解，根据本申请实施例的装置3000可对应于前述的实施例的各方法中的站点，并且装置3000中的各个模块的上述和其它管理操作和/或功能分别为了实现前述各个方法的相应步骤，为了简洁，在此不再赘述。
可以替换的，装置3000也可配置成通用处理系统，例如通称为芯片，该处理模块3010可以包括：提供处理功能的一个或多个处理器；所述收发模块3020例如可以是输入/输出接口、管脚或电路等，输入/输出接口可用于负责此芯片系统与外界的信息交互，例如，此输入/输出接口可将从此芯片外的其他模块接收到的PPDU，输入给此芯片内的处理模块进行处理3010。该处理模块可执行存储模块中存储的计算机执行指令以实现上述方法实施例中站点的功能。在一个示例中，装置3000中可选的包括的存储模块3030可以为芯片内的存储单元，如寄存器、缓存等，所述存储模块3030还可以是位于芯片外部的存储单元，如只读存储器(read-only memory，简称ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，简称RAM)等。
在另一个示例中，图31示出了本申请实施例的另一种站点侧的通信装置3100的示意性框图。本申请实施例的装置3100可以是上述方法实施例中的站点，装置3100可以用于执行上述方法实施例中的站点的部分或全部功能。该装置3100可以包括：处理器3110，基带电路3130，射频电路3140以及天线3150，可选的，该装置3100还可以包括存储器3120。装置3100的各个组件通过总线3160耦合在一起，其中总线系统3160除包括数据总线之外，还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见，在图中将各种总线都标为总线系统3160。
处理器3110可用于实现对站点的控制，用于执行上述实施例中由站点进行的处理，可以执行上述方法实施例中涉及站点的处理过程和/或用于本申请所描述的技术的其他过程，还可以运行操作系统，负责管理总线以及可以执行存储在存储器中的程序或指令。
基带电路3130、射频电路3140以及天线3150可以用于支持站点和接入点之间收发信息，以支持站点与其他节点之间进行无线通信。例如，接入点发送的PPDU经由天线3150接收，由射频电路3140进行滤波、放大、下变频以及数字化等处理后，再经由基带电路3130解码、按协议解封装数据等基带处理后，由处理器3110进行处理来恢复站点所发送的业务数据和信令信息。可以理解的，基带电路3130、射频电路3140以及天线3150还可以用于支持站点与其他网络实体进行通信。
存储器3120可以用于存储站点的程序代码和数据，存储器3120可以是图30中的存储模块3030。图31中存储器3120被示为与处理器3110分离，然而，本领域技术人员很容易明白，存储器3120或其任意部分可位于装置3100之外。举例来说，存储器3120可以包括传输线、和/或与无线节点分离开的计算机制品，这些介质均可以由处理器3110通过总线接口3160来访问。可替换地，存储器3120或其任意部分可以集成到处理器3110中，例如，可以是高速缓存和/或通用寄存器。
一个示例中，图30中的收发模块3020可以包括基带电路3130，射频电路3140，天线 3150；处理模块3010可以是处理器3110；另一个示例中，图30中的收发模块3020可以仅包括图31中的天线，处理模块3010可以既包括处理器3110，还包括射频电路3140和基带电路3130；又一个示例中，图30中处理模块3010可以包括处理器3110，和，基带电路3130；收发模块3020可以包括射频电路3140和天线3150。
可以理解的是，图31仅仅示出了站点的简化设计。例如，在实际应用中，站点可以包含任意数量的发射器，接收器，处理器，存储器等，而所有可以实现本发明的接入点都在本发明的保护范围之内。
本申请实施例还提供一种计算机存储介质，该计算机可读存储介质中存储有指令，所述指令可以由处理电路上的一个或多个处理器执行。当其在计算机上运行时，使得计算机执行上述各实施例中的方法。
本申请实施例还提供了一种芯片系统，该芯片系统包括处理器，用于支持接入点以实现上述实施例中所涉及的功能，例如生成或处理上述方法中所涉及的数据和/或信息。
在一种可能的设计中，所述芯片系统还可以包括存储器，所述存储器，用于接入点必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包含芯片和其他分立器件。
本申请实施例还提供了又一种芯片系统，该芯片系统包括处理器，用于支持站点以实现上述实施例中所涉及的功能，例如生成或处理上述方法中所涉及的数据和/或信息。
在一种可能的设计中，所述芯片系统还可以包括存储器，所述存储器，用于存储接入点必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包含芯片和其他分立器件。
在一种可能的设计中，所述芯片系统还可以包括存储器，所述存储器，用于存储站点必要的程序指令和数据。该芯片系统，可以由芯片构成，也可以包含芯片和其他分立器件。
本申请实施例还提供了一种包含指令的计算机程序产品，其在计算机上运行时，使得计算机执行执行上述各实施例中任一实施例中涉及接入点AP的方法和功能。
本申请实施例还提供了一种包含指令的计算机程序产品，其在计算机上运行时，使得计算机执行执行上述各实施例中任一实施例中涉及站点STA的方法和功能。

Claims (29)

  1. 一种资源单元指示方法，其特征在于，包括：
    接入点AP向多个站点STA发送物理层协议数据单元PPDU；
    其中，所述PPDU的传输带宽被划分为M个分段，M为大于1的整数，所述传输带宽大于或等于80MHz，所述PPDU包括：M个第一字段，所述M个第一字段与所述M个分段一一对应，所述第一字段在对应的分段上传输，所述第一字段用于指示所述AP为所述多个站点STA中的至少一个STA分配的资源单元RU。
  2. 一种资源单元指示方法，其特征在于，包括：
    站点STA接收接入点AP发送的物理层协议数据单元PPDU；其中，所述PPDU的传输带宽被划分为M个分段，M为大于1的整数，所述传输带宽大于或等于80MHz，所述PPDU包括：M个第一字段，所述M个第一字段与所述M个分段一一对应，所述第一字段在对应的分段上传输，所述第一字段用于指示所述AP为多个STA中的至少一个STA分配的资源单元RU，所述STA为所述多个STA中的任一个；
    所述STA根据所述第一字段，解析所述PPDU。
  3. 根据权利要求1或2所述的方法，其特征在于，
    当所述RU大于所述第一字段对应的分段所包括的最大RU时，所述RU为多个所述分段构成的分段组合，或者，所述RU为多个所述分段所包括的全部或部分分片构成的分片组合。
  4. 根据权利要求3所述的方法，其特征在于，
    所述PPDU还包括：指示信息，所述指示信息用于指示在所述RU上进行数据传输的STA的数量。
  5. 根据权利要求3所述的方法，其特征在于，所述第一字段还用于指示在所述RU上进行数据传输的STA的数量。
  6. 根据权利要求3-5任一项所述的方法，其特征在于，所述RU包括：所述第一字段对应的分段。
  7. 一种资源单元指示方法，其特征在于，包括：
    接入点AP向多个站点STA发送物理层协议数据单元PPDU，所述PPDU包括M个触发帧，M为大于1的整数；
    其中，所述PPDU的传输带宽被划分为M个分段，所述传输带宽大于或等于40MHz，所述M个触发帧与所述M个分段一一对应，所述触发帧包括：第一字段，所述第一字段在所述触发帧对应的分段上传输，所述第一字段用于指示所述AP为所述多个STA中的至少一个STA分配的资源单元RU。
  8. 一种资源单元指示方法，其特征在于，包括：
    站点STA接收接入点AP发送的物理层协议数据单元PPDU，所述PPDU包括M个触发帧，M为大于1的整数；其中，所述PPDU的传输带宽被划分为M个分段，所述传输带宽大于或等于40MHz，所述M个触发帧与所述M个分段一一对应，所述触发帧包括：第一字段，所述第一字段在所述触发帧对应的分段上传输，所述第一字段用于指示所述AP为多个STA中的至少一个STA分配的资源单元RU，所述STA为所述多个STA中的任一 个；
    所述STA根据所述第一字段，进行上行数据传输。
  9. 根据权利要求7或8所述的方法，其特征在于，当所述RU大于所述第一字段对应的分段所包括的最大RU时，所述RU为多个所述分段构成的分段组合，或者，所述RU为多个所述分段所包括的全部或部分分片构成的分片组合。
  10. 根据权利要求7-9任一项所述的方法，其特征在于，当所述传输带宽被以160Mhz为单元划分为所述M个分段时，所述触发帧还包括：第二字段；
    当所述第二字段为第一值，且所述RU小于或等于996-tone RU时，所述第一值用于指示所述RU属于所述触发帧对应的分段中的主80MHz，
    当所述第二字段为第二值，且所述RU小于或等于996-tone RU时，所述第二值用于指示所述RU属于所述触发帧对应的分段中的从80MHz；
    或者，
    当所述第二字段为第一值，且所述RU小于或等于996-tone RU时，所述第一值用于指示所述RU属于所述触发帧对应的分段中的低频80MHz；
    当所述第二字段为第二值，且所述RU小于或等于996-tone RU时，所述第二值用于指示所述RU属于所述触发帧对应的分段中的高频80MHz。
  11. 根据权利要求7-9任一项所述的方法，其特征在于，当所述传输带宽为320MHz时，所述触发帧还包括：第三字段；
    当所述第三字段为第一值，且所述RU小于或等于996-tone RU时，所述第一值用于指示所述RU属于所述传输带宽中的最低频80MHz；
    当所述第三字段为第二值，且所述RU小于或等于996-tone RU时，所述第二值用于指示所述RU属于所述传输带宽中的次低频80MHz；
    当所述第三字段为第三值，且所述RU小于或等于996-tone RU时，所述第三值用于指示所述RU属于所述传输带宽中的次高频80MHz；
    当所述第三字段为第四值，且所述RU小于或等于996-tone RU时，所述第四值用于指示所述RU属于所述传输带宽中的最高频80MHz；
    或者，
    当所述第三字段为第一值，且所述RU小于或等于996-tone RU时，所述第一值用于指示所述RU属于所述传输带宽中的主80MHz；
    当所述第三字段为第二值，且所述RU小于或等于996-tone RU时，所述第二值用于指示所述RU属于所述传输带宽中的第一从80MHz；
    当所述第三字段为第三值，且所述RU小于或等于996-tone RU时，所述第三值用于指示所述RU属于所述传输带宽中的第二从80MHz；
    当所述第三字段为第四值，且所述RU小于或等于996-tone RU时，所述第四值用于指示所述RU属于所述传输带宽中的第三从80MHz。
  12. 根据权利要求7-10任一项所述的方法，其特征在于，所述RU包括：所述第一字段对应的分段。
  13. 一种资源单元指示装置，所述装置为接入点AP，其特征在于，包括：
    处理模块，用于生成物理层协议数据单元PPDU；
    发送模块，用于向多个站点STA发送所述PPDU；
    其中，所述PPDU的传输带宽被划分为M个分段，M为大于1的整数，所述传输带宽大于或等于80MHz，所述PPDU包括：M个第一字段，所述M个第一字段与所述M个分段一一对应，所述第一字段在对应的分段上传输，所述第一字段用于指示所述AP为所述多个站点STA中的至少一个STA分配的资源单元RU。
  14. 一种资源单元指示装置，所述装置为站点STA，其特征在于，包括：
    接收模块，用于接收接入点AP发送的物理层协议数据单元PPDU；其中，所述PPDU的传输带宽被划分为M个分段，M为大于1的整数，所述传输带宽大于或等于80MHz，所述PPDU包括：M个第一字段，所述M个第一字段与所述M个分段一一对应，所述第一字段在对应的分段上传输，所述第一字段用于指示所述AP为多个STA中的至少一个STA分配的资源单元RU，所述STA为所述多个STA中的任一个；
    处理模块，用于根据所述第一字段，解析所述PPDU。
  15. 根据权利要求13或14所述的装置，其特征在于，
    当所述RU大于所述第一字段对应的分段所包括的最大RU时，所述RU为多个所述分段构成的分段组合，或者，所述RU为多个所述分段所包括的全部或部分分片构成的分片组合。
  16. 根据权利要求15所述的装置，其特征在于，
    所述PPDU还包括：指示信息，所述指示信息用于指示在所述RU上进行数据传输的STA的数量。
  17. 根据权利要求15所述的装置，其特征在于，所述第一字段还用于指示在所述RU上进行数据传输的STA的数量。
  18. 根据权利要求15-17任一项所述的装置，其特征在于，所述RU包括：所述第一字段对应的分段。
  19. 一种资源单元指示装置，所述装置为接入点AP，其特征在于，包括：
    处理模块，用于生成物理层协议数据单元PPDU；
    发送模块，用于向多个站点STA发送所述PPDU，所述PPDU包括M个触发帧，M为大于1的整数；
    其中，所述PPDU的传输带宽被划分为M个分段，所述传输带宽大于或等于40MHz，所述M个触发帧与所述M个分段一一对应，所述触发帧包括：第一字段，所述第一字段在所述触发帧对应的分段上传输，所述第一字段用于指示所述AP为所述多个STA中的至少一个STA分配的资源单元RU。
  20. 一种资源单元指示装置，所述装置为站点STA，其特征在于，包括：
    接收模块，用于接收接入点AP发送的物理层协议数据单元PPDU，所述PPDU包括M个触发帧，M为大于1的整数；其中，所述PPDU的传输带宽被划分为M个分段，所述传输带宽大于或等于40MHz，所述M个触发帧与所述M个分段一一对应，所述触发帧包括：第一字段，所述第一字段在所述触发帧对应的分段上传输，所述第一字段用于指示所述AP为多个STA中的至少一个STA分配的资源单元RU，所述STA为所述多个STA中的任一个；
    处理模块，用于根据所述第一字段，进行上行数据传输。
  21. 根据权利要求19或20所述的装置，其特征在于，当所述RU大于所述第一字段对应的分段所包括的最大RU时，所述RU为多个所述分段构成的分段组合，或者，所述RU为多个所述分段所包括的全部或部分分片构成的分片组合。
  22. 根据权利要求19-21任一项所述的装置，其特征在于，当所述传输带宽被以160Mhz为单元划分为所述M个分段时，所述触发帧还包括：第二字段；
    当所述第二字段为第一值，且所述RU小于或等于996-tone RU时，所述第一值用于指示所述RU属于所述触发帧对应的分段中的主80MHz，
    当所述第二字段为第二值，且所述RU小于或等于996-tone RU时，所述第二值用于指示所述RU属于所述触发帧对应的分段中的从80MHz；
    或者，
    当所述第二字段为第一值，且所述RU小于或等于996-tone RU时，所述第一值用于指示所述RU属于所述触发帧对应的分段中的低频80MHz；
    当所述第二字段为第二值，且所述RU小于或等于996-tone RU时，所述第二值用于指示所述RU属于所述触发帧对应的分段中的高频80MHz。
  23. 根据权利要求19-21任一项所述的装置，其特征在于，当所述传输带宽为320MHz时，所述触发帧还包括：第三字段；
    当所述第三字段为第一值，且所述RU小于或等于996-tone RU时，所述第一值用于指示所述RU属于所述传输带宽中的最低频80MHz；
    当所述第三字段为第二值，且所述RU小于或等于996-tone RU时，所述第二值用于指示所述RU属于所述传输带宽中的次低频80MHz；
    当所述第三字段为第三值，且所述RU小于或等于996-tone RU时，所述第三值用于指示所述RU属于所述传输带宽中的次高频80MHz；
    当所述第三字段为第四值，且所述RU小于或等于996-tone RU时，所述第四值用于指示所述RU属于所述传输带宽中的最高频80MHz；
    或者，
    当所述第三字段为第一值，且所述RU小于或等于996-tone RU时，所述第一值用于指示所述RU属于所述传输带宽中的主80MHz；
    当所述第三字段为第二值，且所述RU小于或等于996-tone RU时，所述第二值用于指示所述RU属于所述传输带宽中的第一从80MHz；
    当所述第三字段为第三值，且所述RU小于或等于996-tone RU时，所述第三值用于指示所述RU属于所述传输带宽中的第二从80MHz；
    当所述第三字段为第四值，且所述RU小于或等于996-tone RU时，所述第四值用于指示所述RU属于所述传输带宽中的第三从80MHz。
  24. 根据权利要求19-23任一项所述的装置，其特征在于，所述RU包括：所述第一字段对应的分段。
  25. 一种计算机可读存储介质，其特征在于，用于存储指令，当所述指令在计算机上运行时，使所述计算机执行权利要求1至12中任一项所述的方法。
  26. 一种计算机程序产品，其特征在于，所述计算机程序产品包括一个或多个计算机指令，当所述计算机指令在计算机上运行时，使所述计算机执行权利要求1至12中任一 项所述的方法。
  27. 一种装置，其特征在于，包括一个或多个处理器，以及，输入/输出接口，所述输入/输出接口用于负责所述装置的信息或信令输入和输出，所述一个或多个处理电路用于执行指令以实现权利要求1至12中任一项所述的方法。
  28. 一种装置，其特征在于，包括处理器和存储器，所述存储器用于存储指令，所述处理器运行所述指令以使得所述装置执行权利要求1至12中任一项所述的方法。
  29. 一种装置，其特征在于，用于实现权利要求1至12中任一项所述的方法。
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