METHOD FOR INDICATING CAPACITY AND METHOD FOR DETERMINING CAPACITY IN WIRELESS LOCAL AREA NETWORKS AND DEVICES

Description

1 / 102 METHOD FOR INDICATING CAPACITY AND METHOD FOR DETERMINING CAPACITY IN WIRELESS LOCAL AREA NETWORKS AND DEVICES CROSS-REFERENCE TO RELATED REQUESTS

[0001] This application claims priority over Chinese Patent Application No. 202310621928.0, filed with the National Intellectual Property Administration of China on May 29, 2023, and entitled CAPABILITY INDICATION METHOD AND CAPABILITY DETERMINING METHOD IN WIRELESS LOCAL AREA NETWORK, AND APPARATUS, which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] This application relates to the field of wireless local area network technologies and, in particular, to a capacity indication method and a capacity determination method in a wireless local area network and to a device. BACKGROUND

[0003] To ensure that a receiver has sufficient processing time to process a physical protocol data unit (PPDU) sent by a transmitter, the receiver may indicate a nominal packet padding value to the transmitter. Therefore, the transmitter determines, based on the nominal packet padding value, the duration of a packet extension (PE) field included in the PPDU. The receiver does not need data in the packet extension. Therefore, other data may be processed within the packet extension processing time, to ensure that the receiver has sufficient processing time to process the received PPDU.

[0004] The transmitter uses one or more modulation schemes, and the minimum processing time (or corresponding nominal packet filling values) required by the receiver varies accordingly. Currently, for an indication of a nominal packet filling value by the receiver, the transmitter Petition 870250091376, dated 07 / 10 / 2025, page 14 / 171 2 / 102 sends a physical layer data packet to the receiver using a modulation scheme by default. For a case where a plurality of modulation schemes are supported, there is no corresponding solution to indicate a nominal packet padding value. SUMMARY

[0005] This application provides a method for indicating capacity and a method for determining capacity in a wireless local area network, and an apparatus for indicating a corresponding nominal packet padding value used when a receiver supports a transmitter in sending a physical layer data packet to the receiver using at least two modulation schemes.

[0006] To achieve the aforementioned objective, the embodiments of this application provide four methods of capacity indication in a wireless local area network and, correspondingly, there are four methods of capacity determination in the wireless local area network.

[0007] Any method of indicating capacity in a wireless local area network can be performed by a first communication device. The first communication device can be a communication device or a communication apparatus, for example, a chip system, which can support a communication device in implementing a function required by the method. The first communication device can be a receiving end in two communication ends. For example, the two communication ends include a first device and a second device, the first device is a receiving end and the second device is a transmitting end. The first communication device can be a unit, a functional module or similar in the first device. For example, the first communication device can be a chip disposed in the first device, or the first communication device is another Petition 870250091376, dated 07 / 10 / 2025, p. 15 / 171 3 / 102 component configured to implement a function of the first device. Correspondingly, the method of determining capacity in the wireless local area network can be performed by a second communication device. The second communication device can be a communication device or a communication apparatus, for example, a chip system, which can support a communication device in implementing a function required by the method. The second communication device can be a transmitting end in two communication ends. For example, the two communication ends include a first device and a second device, the first device is a receiving end and the second device is a transmitting end. The second communication device can be a unit, a functional module, or similar in the second device.For example, the second communication device could be a chip located in the second device, or the second communication device could be another component configured to implement a function of the second device.

[0008] To facilitate the description, the method for indicating capacity in a wireless local area network is described below using an example in which the first communication device is the first device, and the method for determining capacity in a wireless local area network is described below using an example in which the second communication device is the second device.

[0009] According to a first aspect, an embodiment of this application provides a first method of capacity indication in a wireless local area network. The capacity indication method includes: A first device determines capacity information and sends it to a second device. The capacity information includes a nominal packet padding subfield; the nominal packet padding subfield indicates a corresponding nominal packet padding value used when the second device sends a PPDU. Petition 870250091376, dated 07 / 10 / 2025, page 16 / 171 4 / 102 for the first device, to allow the second device to determine, based on the nominal packet padding value, the duration of a PE field included in the PPDU. The duration of the PE field allows the first device sufficient time to analyze the PPDU received from the second device. The nominal packet padding value is for all numbers of spatial streams (NSS) and all resource unit (RU) allocations that the first device supports, and for at least two modulation schemes used by the second device in a configured frequency domain resource or a configured spatial stream.

[0010] In the method, the nominal packet padding value indicated by the nominal packet padding subfield is for all NSSs and all RU allocations that the first device supports, and also for the at least two modulation schemes used by the second device in the configured frequency domain resource or the configured spatial stream. When the second device sends the PPDU to the first device using the at least two modulation schemes, according to the method, the nominal packet padding value determined by the second device allows the first device sufficient time to process the PPDU received from the second device.

[0011] According to a second aspect, an embodiment of this application provides a first method for determining capacity in a wireless local area network. The capacity determination method includes: A second device receives capacity information from a first device, determines a nominal packet filling value based on a configured frequency domain feature and spatial flow and at least two modulation schemes used, and determines, based on the nominal packet filling value, the duration of a PE field included in a PPDU. Petition 870250091376, dated 07 / 10 / 2025, page 17 / 171 5 / 102 sent to the first device. The PE field duration allows the first device sufficient time to analyze the PPDU received from the second device. Capacity information includes a nominal packet padding subfield, and the nominal packet padding subfield indicates the corresponding nominal packet padding value used when the second device sends the PPDU to the first device. The nominal packet padding value is for all NSSs and all RU allocations that the first device supports, and for at least two modulation schemes used by the second device in the configured frequency domain feature or configured spatial stream.

[0012] This corresponds to the solution provided in the first aspect. The nominal packet padding value indicated by the nominal packet padding subfield is for a case where the second device uses at least two modulation schemes. When the second device sends the PPDU to the first device using at least two modulation schemes, the nominal packet padding value can be determined based on the nominal packet padding subfield of the first device, and the duration of the PE field included in the PPDU is further determined, to allow the first device sufficient time to parse the PPDU received from the second device.

[0013] Optionally, capacity information also includes a physical layer packet extension threshold presence subfield, the nominal packet padding subfield indicates the corresponding nominal packet padding value used when the second device sends the PPDU to the first device, and a physical layer packet extension threshold presence subfield value of 0.

[0014] In one possible implementation, the nominal package padding value corresponding to at least Petition 870250091376, dated 07 / 10 / 2025, page 18 / 171 6 / 102 The two modulation schemes used by the second device are increased by one or more levels based on a nominal packet filling value corresponding to a modulation scheme used by the second device. For example, for all RU allocations and all NSSs, if a nominal packet filling subfield status value is 0, and the nominal packet filling value is 8 microseconds; if a nominal packet filling subfield status value is 1, and the nominal packet filling value is 16 microseconds; if a nominal packet filling subfield status value is 2, and the nominal packet filling value is 20 microseconds; or if a nominal packet filling subfield status value is 3, the second device sends the PPDU to the first device using at least the two modulation schemes, and the nominal packet filling value is 20 microseconds.

[0015] In one possible implementation, the second device determines the nominal packet filling value based on the configured frequency domain feature and spatial stream, and the at least two modulation schemes used include: The second device determines the nominal packet filling value based on a configured number of spatial streams, the configured frequency domain feature, and a higher-order modulation scheme in at least two modulation schemes. In other words, when the second device uses at least two modulation schemes, the second device may determine the nominal packet filling value based on the higher-order modulation scheme in at least two modulation schemes by default.

[0016] In one possible implementation, when a nominal packet padding subfield status value is 3, a constellation index corresponding to the highest-order modulation scheme in at least two modulation schemes is lower Petition 870250091376, dated 07 / 10 / 2025, page 19 / 171 7 / 102 or equal to a constellation index threshold, and one or more of the following conditions are met, the nominal packet filling value is 16 microseconds; otherwise, the nominal packet filling value is 20 microseconds: a RU / MRU allocation size is less than or equal to a size threshold, a RU or MRU size corresponding to the higher-order modulation scheme is less than or equal to a size threshold, or an NSS is less than or equal to a spatial stream number threshold.

[0017] In this solution, the nominal packet padding value is related to the size of a RU / MRU and an NSS that are actually configured for the second device and the higher-order modulation scheme. The PE field duration determined based on the nominal packet padding value determined based on the size of the RU / MRU and NSS that are actually configured for the second device and the higher-order modulation scheme allows the first device sufficient time to analyze the received PPDU and can reduce the processing complexity of the second device.

[0018] Optionally, the constellation index threshold is 5, the size threshold is 2x996 tones, and the spatial stream number threshold is 8 or 16.

[0019] According to a third aspect, an embodiment of this application provides a second method of capacity indication in a wireless local area network. The capacity indication method includes: A first device determines capacity information and sends it to a second device. The capacity information includes a physical layer packet extension thresholds field, and the physical layer packet extension thresholds field includes a RU index bitmask subfield, an NSS subfield, and a physical layer packet extension thresholds information field. The physical layer packet extension thresholds information field includes a Petition 870250091376, dated 07 / 10 / 2025, page 20 / 171 8 / 102 plurality of sets of packet extension threshold subfields corresponding to different nominal packet padding values. Each set of packet extension threshold subfields indicates a modulation threshold corresponding to an NSS where ne is a RU / MRU corresponding to a sequence number b, and the modulation threshold is used by the second device to determine a nominal packet padding value used to send a PPDU to the first device. The nominal packet padding value is for the first device that supports the second device in using at least two modulation schemes when the configured NSS is ne. The RU / MRU corresponds to the sequence number b. A range of values ​​of n is a subset of [N1,..., N2], and both N1 and N2 are integers greater than or equal to 1. A range of values ​​of b is a subset of [M1, ..., M2], and M1 and M2 are integers greater than or equal to 0.

[0020] In the method, the nominal packet padding value corresponding to the modulation threshold indicated by each set of packet extension threshold subfields is for a case where the first device supports the second device in using at least two modulation schemes in a configured frequency domain resource or a configured spatial stream. When the second device uses at least two modulation schemes, according to the method, the corresponding nominal packet padding value allows the first device sufficient time to analyze a PPDU received from the second device.

[0021] According to a fourth aspect, an embodiment of this application provides a second method of capacity determination in a wireless local area network. The capacity determination method includes: A second device receives capacity information from a first device, determines a nominal packet padding value based on a frequency domain feature. Petition 870250091376, dated 07 / 10 / 2025, page 21 / 171 9 / 102 configured and spatial flow and at least two modulation schemes used, and determines, based on the nominal packet padding value, the duration of a PE field included in a PPDU that is sent by the second device to the first device. The duration of the PE field allows the first device sufficient time to parse the PPDU received from the second device. The capacity information includes a physical layer packet extension thresholds field, and the physical layer packet extension thresholds field includes an RU index bitmask subfield, an NSS subfield, and a physical layer packet extension thresholds information field. The physical layer packet extension thresholds information field includes a plurality of sets of packet extension thresholds subfields corresponding to different nominal packet padding values.Each set of packet extension threshold subfields indicates a modulation threshold corresponding to an NSS, where ne is a RU / MRU corresponding to a sequence number b, and the modulation threshold is used by the second device to determine the nominal packet padding value used to send the PPDU to the first device. The nominal packet padding value is for the first device that supports the second device in using at least two modulation schemes when the configured NSS is nea. The RU / MRU corresponds to the sequence number b. A range of values ​​for n is a subset of [N1,..., N2], and both N1 and N2 are integers greater than or equal to 1. A range of values ​​for b is a subset of [M1,..., M2], and M1 and M2 are integers greater than or equal to 0.

[0022] This corresponds to the solution provided in the third aspect. When the second device sends the PPDU to the first device using at least the two modulation schemes, the second device can determine the value of Petition 870250091376, dated 07 / 10 / 2025, page 22 / 171 10 / 102 Nominal packet padding based on the configured RU / MRU corresponding to sequence number b, the configured NSS, the at least two modulation schemes used, and the plurality of packet extension threshold subfield sets corresponding to the plurality of nominal packet padding values. According to the method, the first device may have sufficient time to analyze the PPDU received from the second device.

[0023] Optionally, the capacity information also includes a physical layer packet extension threshold presence subfield, and when the physical layer packet extension threshold field is used by the second device to determine the nominal packet padding value used to send the PPDU to the first device, a value of the physical layer packet extension threshold presence subfield is 1.

[0024] In one possible implementation, in each set of packet extension threshold subfields, a nominal packet padding value corresponding to at least two modulation schemes is a nominal packet padding value corresponding to a second modulation scheme, a constellation index corresponding to the second modulation scheme is a sum of a constellation index corresponding to a higher-order modulation scheme in at least two modulation schemes and a first value, and the first value is not equal to 0.

[0025] In this solution, when at least two modulation schemes are configured for the second device, the second modulation scheme is configured for the second device by default. A design of the physical layer packet extension threshold information field in 802.11be is still used to implement an indication of the nominal packet padding value in a case where the use of at least two modulation schemes is supported. This is straightforward. Petition 870250091376, dated 07 / 10 / 2025, page 23 / 171 11 / 102

[0026] In one possible implementation, in each set of packet extension threshold subfields, a modulation threshold corresponding to the NSS being nea RU corresponding to the sequence number b is a modulation threshold corresponding to the NSS being nea RU corresponding to the sequence number b', b' is a sum of b and a second value, and the second value is not equal to 0.

[0027] In this solution, when at least two modulation schemes are configured for the second device, and a sequence number corresponding to a RU actually used by the second device is b, the modulation threshold used to determine the nominal packet padding value is the modulation threshold corresponding to the NSS being nea RU corresponding to sequence number b' by default. Based on this solution, the design of the packet extension threshold information field of the physical layer in 802.11be does not need to be changed, and this is straightforward.

[0028] In one possible implementation, in each set of packet extension threshold subfields, a modulation threshold corresponding to the NSS being n' and the RU corresponding to the sequence number b is a modulation threshold corresponding to the NSS being n' and the RU corresponding to the sequence number b, n' is a sum of n and a third value, and the third value is not equal to 0.

[0029] In this solution, when at least two modulation schemes are configured for the second device, and an NSS actually configured for the second device is n, the modulation threshold used to determine the nominal packet padding value is the modulation threshold corresponding to the NSS being n' and the RU corresponding to the sequence number b by default. In this solution, the design of the packet extension threshold information field of the physical layer in 802.11be does not need to be changed, which simplifies implementation. Petition 870250091376, dated 07 / 10 / 2025, page 24 / 171 12 / 102

[0030] In one possible implementation, in each set of packet extension threshold subfields, a modulation threshold corresponding to the NSS being nea RU corresponding to sequence number b corresponds to a nominal packet padding value of 20 microseconds.

[0031] When at least two modulation schemes are configured for the second device, the nominal packet padding value that needs to be used by the second device is 20 microseconds by default. This is simple.

[0032] According to a fifth aspect, an embodiment of this application provides a third method of capacity indication in a wireless local area network. The capacity indication method includes: A first device determines capacity information and sends it to a second device. The capacity information includes a physical layer packet extension threshold field, and the physical layer packet extension threshold field includes a RU index bitmask subfield, an NSS subfield, and a physical layer packet extension threshold information field. The physical layer packet extension threshold information field includes a plurality of sets of packet extension threshold subfields corresponding to different nominal packet padding values.Each set of packet extension threshold subfields includes a first subfield, and the first subfield indicates a first modulation threshold corresponding to a first spatiotemporal stream in n spatiotemporal streams when an NSS is n and a RU corresponds to a sequential number b. The first modulation threshold is used by the second device to determine a corresponding nominal packet padding value, used when sending a PPDU to the first device in the first spatiotemporal stream using a first modulation scheme. The nominal packet padding value. Petition 870250091376, dated 07 / 10 / 2025, page 25 / 171 13 / 102 refers to the first device that supports the second device in the use of at least two modulation schemes in n configured spatial streams. A range of values ​​for n is a subset of [N1,..., N2], and N1 and N2 are integers greater than or equal to 1. A range of values ​​for b is a subset of [M1,..., M2], and M1 and M2 are integers greater than or equal to 0.

[0033] In the method, a corresponding modulation threshold is indicated for each spatial stream. For example, each set of packet extension threshold subfields can be extended based on a number of spatial streams. For example, each set of packet extension threshold subfields includes a first subfield and a second subfield. The first subfield indicates a first modulation threshold corresponding to a first spatiotemporal stream in n spatiotemporal streams when an NSS is n and a RU corresponds to a sequential number b. The first modulation threshold is used by the second device to determine a corresponding nominal packet padding value used when sending a PPDU to the first device in the first spatiotemporal stream using a first modulation scheme.The second subfield indicates a second modulation threshold corresponding to a second spatiotemporal stream in the n spatiotemporal streams when the NSS is nea RU corresponding to the sequence number b. The second modulation threshold is used by the second device to determine a corresponding nominal packet padding value used when sending a PPDU to the first device in the second spatiotemporal stream using a second modulation scheme. A corresponding modulation threshold is indicated for each spatial stream, to indicate a nominal packet padding value that needs to be used when the second device uses a plurality of modulation schemes in a plurality of spatial streams. For example, the packet padding value. Petition 870250091376, dated 07 / 10 / 2025, page 26 / 171 14 / 102 nominal used by the second device is a maximum nominal packet filling value in nominal packet filling values, corresponding respectively to the n space-time flows when the NSS is neo RU corresponds to the sequential number b.

[0034] According to a sixth aspect, an embodiment of this application provides a third method of capacity determination in a wireless local area network. The capacity determination method includes: A second device receives capacity information from a first device, determines a nominal packet padding value based on a configured frequency domain feature and spatial flow and at least two modulation schemes used, and determines, based on the determined nominal packet padding value, the duration of a PE field included in a PPDU that is sent by the second device to the first device. The duration of the PE field allows the first device sufficient time to analyze the PPDU received from the second device.The capacity information includes a physical layer packet extension threshold field, and the physical layer packet extension threshold field includes a bitmask subfield with index RU, an NSS subfield, and a physical layer packet extension threshold information field. The physical layer packet extension threshold information field includes a plurality of sets of packet extension threshold subfields corresponding to different nominal packet padding values. Each set of packet extension threshold subfields includes a first subfield, and the first subfield indicates a first modulation threshold corresponding to a first spatiotemporal stream in n spatiotemporal streams when an NSS is n and an RU corresponds to a sequential number b. The first modulation threshold is used by the second device to determine a nominal packet padding value. Petition 870250091376, dated 07 / 10 / 2025, page 27 / 171 15 / 102 corresponding value is used when sending the PPDU to the first device in the first spatiotemporal stream using a first modulation scheme. The nominal packet padding value is for the first device that supports the second device in the use of at least two modulation schemes in n configured spatial streams. A range of values ​​for n is a subset of [N1,..., N2], and N1 and N2 are integers greater than or equal to 1. A range of values ​​for b is a subset of [M1,..., M2], and M1 and M2 are integers greater than or equal to 0.

[0035] Each set of packet extension threshold subfields also includes a second subfield. The second subfield indicates a second modulation threshold corresponding to a second spatiotemporal stream in the n spatiotemporal streams when the NSS is nea RU corresponding to sequence number b. The second modulation threshold is used by the second device to determine a corresponding nominal packet padding value used when sending the PPDU to the first device in the second spatiotemporal stream using a second modulation scheme.

[0036] This corresponds to the solution provided in the fifth aspect. By sending a physical layer data packet to the first device in the plurality of spatial streams using at least two modulation schemes, the second device can determine a nominal packet padding value corresponding to each spatial stream and then determine, based on the nominal packet padding values ​​corresponding to all spatial streams, a nominal packet padding value that will ultimately be used.

[0037] Optionally, the capacity information also includes a subfield for the presence of physical layer packet extension thresholds, and when the physical layer packet extension thresholds field is used by the second device to determine the nominal packet padding value used for Petition 870250091376, dated 07 / 10 / 2025, page 28 / 171 16 / 102 send the PPDU to the first device, a value of the physical layer packet extension threshold presence subfield is 1.

[0038] In one possible implementation, the nominal packet padding value used by the second device is a maximum nominal packet padding value in nominal packet padding values ​​used respectively in spacetime streams n when the NSS is nea RU corresponds to sequence number b, to ensure, as far as possible, that sufficient time is reserved for the first device to parse the PPDU received from the second device.

[0039] According to a seventh aspect, an embodiment of this application provides a fourth method of capacity indication in a wireless local area network. The capacity indication method includes: A first device determines capacity information and sends it to a second device. The capacity information includes a physical layer packet extension threshold field, and the physical layer packet extension threshold field includes a RU index bitmask subfield, an NSS subfield, and a physical layer packet extension threshold information field. The physical layer packet extension threshold information field includes a plurality of sets of packet extension threshold subfields corresponding to different nominal packet padding values.Each set of packet extension threshold subfields includes a first subfield, and the first subfield indicates a first modulation threshold corresponding to a first set of subcarriers in a frequency domain resource when an NSS is n a frequency domain resource corresponds to a sequence number b. The first modulation threshold is used by the second device to determine a corresponding nominal packet padding value, used when sending the PPDU to the first device in the first set of subcarriers using a. Petition 870250091376, dated 07 / 10 / 2025, page 29 / 171 17 / 102 first modulation scheme. The nominal packet filling value is for the first device that supports the second device in the use of at least two modulation schemes in the configured frequency domain feature. A range of n values ​​is a subset of [N1,..., N2], and N1 and N2 are integers greater than or equal to 1. A range of b values ​​is a subset of [M1, ..., M2], and M1 and M2 are integers greater than or equal to 0. The frequency domain feature includes i sets of subcarriers, where ei is a positive integer.

[0040] Each set of packet extension threshold subfields further includes a second subfield, and the second subfield indicates a second modulation threshold corresponding to a second set of subcarriers in the frequency domain feature when the NSS is the frequency domain feature corresponding to sequence number b. The second modulation threshold is used by the second device to determine a corresponding nominal packet padding value, used when sending the PPDU to the first device in the second set of subcarriers, using a second modulation scheme.

[0041] In the method, a corresponding modulation threshold is indicated for each set of subcarriers. For example, each set of packet extension threshold subfields can be extended based on a number of subcarrier sets. For example, each set of packet extension threshold subfields includes a first subfield and a second subfield. A corresponding modulation threshold is indicated for each set of subcarriers, to indicate a nominal packet padding value used when the second device uses a plurality of modulation schemes in a plurality of subcarrier sets. For example, the nominal packet padding value used by the second device in the frequency domain feature is a maximum nominal packet padding value in filling values ​​of Petition 870250091376, dated 07 / 10 / 2025, page 30 / 171 18 / 102 nominal packet used respectively in the i sets of subcarriers when the NSS is nea RU corresponds to the sequential number b.

[0042] According to an eighth aspect, an embodiment of this application provides a fourth method of capacity determination in a wireless local area network. The capacity determination method includes: A second device receives capacity information from a first device, determines a nominal packet padding value based on a configured frequency domain feature and spatial flow and at least two modulation schemes used, and determines, based on the determined nominal packet padding value, the duration of a PE field included in a PPDU that is sent by the second device to the first device. The duration of the PE field allows the first device sufficient time to analyze the PPDU received from the second device.

[0043] Capacity information includes a physical layer packet extension thresholds field, and the physical layer packet extension thresholds field includes an RU index bitmask subfield, an NSS subfield, and a physical layer packet extension thresholds information field. The physical layer packet extension thresholds information field includes a plurality of packet extension threshold subfield sets corresponding to different nominal packet padding values. Each packet extension threshold subfield set includes a first subfield, and the first subfield indicates a first modulation threshold corresponding to a first set of subcarriers in a frequency domain resource when an NSS is n and a frequency domain resource corresponds to a sequence number b.The first modulation threshold is used by the second device to determine a corresponding nominal packet padding value, used when sending the PPDU to the first device. Petition 870250091376, dated 07 / 10 / 2025, page 31 / 171 19 / 102 device in the first set of subcarriers using a first modulation scheme. The nominal packet padding value is for the first device supporting the second device in the use of at least two modulation schemes in the configured frequency domain feature. A range of n values ​​is a subset of [N1,..., N2], and N1 and N2 are integers greater than or equal to 1. A range of b values ​​is a subset of [M1, ..., M2], and M1 and M2 are integers greater than or equal to 0. The frequency domain feature includes i sets of subcarriers, where ei is a positive integer.

[0044] Each set of packet extension threshold subfields further includes a second subfield, and the second subfield indicates a second modulation threshold corresponding to a second set of subcarriers in the frequency domain feature when the NSS is the frequency domain feature corresponding to sequence number b. The second modulation threshold is used by the second device to determine a corresponding nominal packet padding value, used when sending the PPDU to the first device in the second set of subcarriers, using a second modulation scheme.

[0045] This corresponds to the solution provided in the seventh aspect. The nominal packet padding value used by the second device in the frequency domain feature is a maximum nominal packet padding value in nominal packet padding values ​​used respectively in the i sets of subcarriers when the NSS is nea RU corresponds to sequence number b, to ensure, as far as possible, that sufficient time is reserved for the first device to parse the PPDU received from the second device.

[0046] Optionally, the capacity information also includes a subfield for the presence of physical layer packet extension thresholds, and when the physical layer packet extension thresholds field is used by the second device to Petition 870250091376, dated 07 / 10 / 2025, page 32 / 171 20 / 102 determine the nominal packet padding value used to send the PPDU to the first device, a value of the physical layer packet extension threshold presence subfield is 1.

[0047] According to a ninth aspect, an embodiment of this application provides a communication apparatus. The communication apparatus has the function of implementing behavior in the method examples in any of the aspects from the first to the eighth. For beneficial purposes, refer to the descriptions of the first to the eighth aspect. Details are not described again in this document.

[0048] The communication apparatus may be the first communication apparatus in the first aspect, in the third aspect, in the fifth aspect, or in the seventh aspect. For example, the communication apparatus may be a station. Alternatively, the communication apparatus may be an apparatus that can support the first device in the first aspect, in the third aspect, in the fifth aspect, or in the seventh aspect in implementing a function required by the method provided in the first aspect, in the third aspect, in the fifth aspect, or in the seventh aspect. For example, the communication device may be a chip or a system of chips in the first device.

[0049] The communication device may alternatively be the second communication device in the second aspect, in the fourth aspect, in the sixth aspect, or in the eighth aspect. For example, the communication device may be an access point. The communication device may be a device that can support the second device in the second aspect, in the fourth aspect, in the sixth aspect, or in the eighth aspect in implementing a function required by the method provided in the second aspect, in the fourth aspect, in the sixth aspect, or in the eighth aspect. For example, the communication device may be a chip or a chip system in the second device.

[0050] In a possible project, the communication device Petition 870250091376, dated 07 / 10 / 2025, p. 33 / 171 21 / 102 includes a corresponding means or module configured to perform the method in any one of the first to eighth aspects. For example, the communication apparatus includes a processing unit (sometimes also called a processing module or a processor) and / or a transceiver unit (sometimes also called a transceiver module or a transceiver). The transceiver unit may implement a sending function and a receiving function. When the transceiver unit implements the sending function, the transceiver unit may be called a sending unit (sometimes also called a sending module). When the transceiver unit implements the receiving function, the transceiver unit may be called a receiving unit (sometimes also called a receiving module).The sending unit and the receiving unit can be the same functional unit; this functional unit is called the transceiver unit, and it can implement both the sending and receiving functions. Alternatively, the sending unit and the receiving unit can be different functional units, and the transceiver unit is a general term for these functional units. These units (modules) can perform corresponding functions in the method examples in any of aspects one through eight. For details, see the detailed descriptions in the method examples. The details are not described in this document.

[0051] According to a tenth aspect, an embodiment of this application provides a communication device. The communication device may be the communication device in the ninth aspect of the preceding embodiments, or it may be a chip or a chip system disposed in the communication device in the ninth aspect. The communication device includes a communication interface and a processor and, optionally, also includes a memory. The memory is configured to store a computer program, Petition 870250091376, dated 07 / 10 / 2025, p. 34 / 171 22 / 102 instructions or data. The processor is coupled to the memory and the communication interface. When the processor reads the computer program, instructions, or data, the communication device is enabled to perform the method performed by the first device or the second device in the previous method modes.

[0052] According to an eleventh aspect, an embodiment of this application provides a chip system. The chip system includes a processor, may also include memory and / or a communication interface, and is configured to implement the method in any one of the first to eighth aspects. Optionally, the chip system also includes memory. The memory is configured to store a computer program (which may also be called code or instructions). The processor is configured to invoke the computer program from memory and run the computer program, to enable a device in which the chip system is installed to perform the method in any one of the first to eighth aspects and any possible implementation of any one of the first to eighth aspects. The chip system may include a chip, or it may include a chip and another discrete component.

[0053] According to a twelfth aspect, an embodiment of this application provides a communication apparatus. The communication apparatus includes an input / output interface and a logic circuit. The input / output interface is configured for input and / or output of information. The input / output interface may be an interface circuit, an output circuit, an input circuit, a pin, a related circuit, or similar. The logic circuit is configured to perform the method in any one of the first to eighth aspects.

[0054] During the specific implementation, the communication device can be a chip, the input circuit can be an input pin, the output circuit can be an output pin. Petition 870250091376, dated 07 / 10 / 2025, p. 35 / 171 23 / 102 and the logic circuit can be a transistor, a gate circuit, an actuator, several logic circuits or similar. An input signal received by the input circuit can be received and entered by, for example, but not limited to, a receiver; an output signal by the output circuit can be emitted to, for example, but not limited to, a transmitter and transmitted by the transmitter; and the input circuit and the output circuit can be the same circuit, where the circuit is used as the input circuit and the output circuit at different times. Specific implementations of the input / output interface and the logic circuit are not limited in this request.

[0055] According to a thirteenth aspect, an embodiment of this application provides a communication system. The communication system includes the communication apparatus, in the ninth aspect, configured to implement a function in the first aspect and the communication apparatus, in the ninth aspect, configured to implement a function in the second aspect. Alternatively, the communication system includes the communication apparatus, in the ninth aspect, configured to implement a function in the third aspect and the communication apparatus, in the ninth aspect, configured to implement a function in the fourth aspect. Alternatively, the communication system includes the communication apparatus, in the ninth aspect, configured to implement a function in the fifth aspect and the communication apparatus, in the ninth aspect, configured to implement a function in the sixth aspect.Alternatively, the communication system includes the communication device, in the ninth aspect, configured to implement a function in the seventh aspect, and the communication device, in the ninth aspect, configured to implement the function in the eighth aspect.

[0056] According to a fourteenth aspect, this application provides a computer-readable storage medium. The computer-readable storage medium stores a program of Petition 870250091376, dated 07 / 10 / 2025, page 36 / 171 24 / 102 computer. When the computer program is run, the method in any of the aspects from the first to the eighth is implemented.

[0057] According to a fifteenth aspect, a computer program product is provided. The computer program product includes computer program code. When the computer program code is realized, the method in any of the aspects from the first to the eighth is realized.

[0058] For the beneficial effect of the ninth aspect through the fifteenth aspect and the implementations of the ninth aspect through the fifteenth aspect, see the descriptions of the beneficial effect of the first aspect through the eighth aspect and the implementations of the first aspect through the eighth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] FIG. 1 is a diagram of a WLAN network architecture to which one form of this request is applicable; FIG. 2 shows a PPDU bit padding process in a last encoded symbol; FIG. 3 is a diagram of a PPDU according to one modality of this request; FIG. 4 is a diagram of a HE physical layer capability information field according to one embodiment of this application; FIG. 5 is a diagram of an HE capability element according to an embodiment of this application; FIG. 6 is another diagram of a HE physical layer capability information field according to one embodiment of this application; FIG. 7 is a diagram of a structure of a physical layer packet extension threshold field according to one embodiment of this application; FIG. 8 is a diagram of a structure of a physical layer packet extension threshold information field according to one embodiment of this request; Petition 870250091376, dated 07 / 10 / 2025, page 37 / 171 25 / 102 FIG. 9 is a diagram of a principle for determining a nominal packet fill value based on a constellation index corresponding to a modulation scheme used and a physical layer packet extension threshold field according to an embodiment of this application; FIG. 10 is a diagram of another structure of a physical layer packet extension threshold field according to one embodiment of this application; FIG. 11 is a diagram of another structure of a physical layer packet extension threshold information field according to one embodiment of this request; FIG. 12 is a schematic flowchart of a first method of capacity indication in a wireless local area network according to one embodiment of this application; FIG. 13 is a schematic flowchart of a second method of capacity indication in a wireless local area network according to an embodiment of this application; FIG. 14 is a diagram of a first principle for determining a nominal package fill value based on FIG. 13 according to an embodiment of this application; FIG. 15 is a diagram of a second principle for determining a nominal package fill value based on FIG. 13 according to an embodiment of this application; FIG. 16 is a diagram of a third principle for determining a nominal package fill value based on FIG. 13 according to an embodiment of this application; FIG. 17 is a schematic flowchart of a third method of capacity indication in a wireless local area network according to an embodiment of this application; FIG. 18 is a diagram of a structure of a packet extension threshold subfield in the method shown in FIG. 17 according to an embodiment of this application; FIG. 19 is a diagram of another structure of a subfield of Petition 870250091376, dated 07 / 10 / 2025, page 38 / 171 26 / 102 packet extension thresholds in the method shown in FIG. 17 according to an embodiment of this request; FIG. 20 is a diagram of a principle for determining a nominal package fill value based on the method shown in FIG. 17 according to an embodiment of this application; FIG. 21 is a schematic flowchart of a fourth method of capacity indication in a wireless local area network according to an embodiment of this application; FIG. 22 is a diagram of a structure of a packet extension threshold subfield in the method shown in FIG. 21 according to an embodiment of this application; FIG. 23 is a diagram of a principle for determining a nominal package fill value based on the method shown in FIG. 21 according to an embodiment of this application; FIG. 2.4 is a diagram of the structure of a communication device according to one embodiment of this application; and FIG. 25 is a diagram of another structure of a communication device according to an embodiment of this application. DESCRIPTION OF THE MODALITIES

[0060] The embodiments of this application are applicable to a wireless local area network (WLAN) scenario or are applicable to the IEEE 802.11 system standard. The IEEE 802.11 system standard includes, for example, 802.11a / b / g, 802.11n, 802.11ac, 802.11ax, 802.11be, or a next-generation standard. The embodiments of this application are alternatively applicable to a wireless local area network system, for example, an Internet of Things (IoT) network or a Vehicle-to-Everything (V2X) network. Certainly, the embodiments of this application are alternatively applicable to other possible communication systems, for example, a long-term evolution system (LTE), a new radio system (NR), and a future next-generation communication system.

[0061] The following uses an example in which the modalities of this Petition 870250091376, dated 07 / 10 / 2025, p. 39 / 171 The 27 / 102 requests are applicable to a WLAN scenario. It should be understood that WLAN development from the 802.11a / g and progressing through 802.11n, 802.11ac, 802.11ax, and the currently under discussion 802.11be. 802.11n can also be called high throughput (HT), 802.11ac can also be called very high throughput (VHT), 802.11ax can also be called high efficiency (HE) or Wi-Fi 6, and 802.11be can also be called extremely high throughput (EHT) or Wi-Fi 7. Standards prior to HT, for example, 802.11a / b / g, are collectively called non-high throughput (Non-HT).

[0062] A network architecture to which the embodiments of this application apply may include one or more access point (AP) stations and one or more non-access point (non-AP STA) stations. For ease of description, in this descriptive report, the access point station is referred to as an access point (AP) and the non-access point station is referred to as a station (STA). FIG. 1 is a diagram of a WLAN network architecture to which an embodiment of this application applies. In FIG. 1, an example is used in which the WLAN includes a wireless access point (AP) and two stations (STAs). In the WLAN, a physical layer can transmit information based on a physical layer data packet. An STA associated with the AP can receive a PPDU sent by the AP and can also send a physical layer data packet to the AP.The physical layer data packet can be a physical protocol data unit (Physical Layer Protocol Data Unit, PPDU). The AP and STA in the modalities of this request can be an AP and an STA applicable to the IEEE 802.11 system standard. The number of APs and STAs in FIG. 1 are examples only. There may be more or fewer APs and STAs.

[0063] The STA in some forms of this application may be a Petition 870250091376, dated 07 / 10 / 2025, p. 40 / 171 28 / 102 wireless communication chip, a wireless sensor, or a terminal that supports media access control (MAC) and a physical layer (PHY) in the 802.11 system standard. The terminal may include various devices with a wireless communication function, for example, a handheld device, a vehicle-mounted device, a wearable device, a computing device, another processing device connected to a wireless modem, user equipment (UE) in various forms, a mobile station (MS), a terminal, a terminal equipment, a portable communication device, a portable device, a portable computing device, an entertainment device, a gaming device or system, a global positioning system device, or any other suitable device configured to perform network communication via a wireless medium.For example, a STA could be a router, a switch, a bridge, or something similar. In this document, for ease of description, the devices mentioned above are referred to as stations or STAs.

[0064] An AP is a device that provides a wireless communication function to a STA associated with the AP and is generally a network-side product that supports MAC and PHY in the 802.11 system standard. For example, the AP can be a communication device, such as a base station, a router, a gateway, a repeater, a communication server, a switch, or a bridge. The base station can include a macro base station, a micro base station, a relay station, and the like in various forms. In this document, for ease of description, the devices mentioned above are collectively referred to as APs.

[0065] FIG. 1 shows an example where a mode of this request is applicable to communication between an AP and a STA. In some modes, the modes of this request are also Petition 870250091376, dated 07 / 10 / 2025, p. 41 / 171 29 / 102 applicable to communication between APs. For example, APs can communicate with each other using a distributed system (DS). The modalities of this request are also applicable to communication between STAs.

[0066] To allow a receiver sufficient time to analyze / process a PPDU received from a transmitter, 802.11ax specifies that pre-FEC padding, post-FEC padding, and packet extension may be introduced into the PPDU. Pre-FEC padding and excess information occupy approximately a multiple of one-quarter (e.g., one-quarter, two-quarters, three-quarters, and all) of the subcarriers in a last encoded symbol, and the remaining subcarriers may be used to carry the post-FEC padding.

[0067] For ease of understanding, see FIG. 2. FIG. 2 shows a PPDU bit padding process in a last encoded symbol. In FIG. 2, a indicates that the overflow information bits and the pre-correction-forward error padding bits occupy about multiples of one-quarter of the subcarriers in a symbol after scrambling and encoding. As shown in FIG.2, a=1 indicates that the excess information bits and the pre-error correction padding bits occupy about one-quarter of the subcarriers in a symbol after scrambling and encoding; a=2 indicates that the excess information bits and the pre-error correction padding bits occupy about two-quarters of the subcarriers in a symbol after scrambling and encoding; a=3 indicates that the excess information bits and the pre-error correction padding bits occupy about three-quarters of the subcarriers in a symbol after scrambling and encoding; and a=3 indicates that the bits of... Petition 870250091376, dated 07 / 10 / 2025, page 42 / 171 30 / 102 excess information and the pre-FEC padding bits occupy all subcarriers in a symbol after scrambling and encoding. Subcarriers other than a multiple of one-quarter of the subcarriers occupied by pre-FEC padding and excess information are used to carry post-FEC padding.

[0068] When decoding the last encoded symbol of the PPDU, the receiver can decode only a multiple of one-quarter of the subcarriers occupied by pre-FEC padding and excess information, without decoding the entire encoded symbol. For example, the receiver does not need to decode subcarriers occupied by post-FEC padding. This saves decoding time and reserves more time for analyzing the PPDU.

[0069] As shown in FIG. 2, the remaining subcarriers in a symbol are padded by means of post-FEC padding, so that a number of bits occupied by data reaches NCBPS bits, where NCBPS indicates a number of symbol-encoded bits (symbol-encoded bits). However, due to the uncertainty of the duration corresponding to post-FEC padding and the limitation of the total duration, the time reserved for PPDU parsing may not reach the minimum time (e.g., 8 μs and 16 ps) required by the receiver. To ensure that the time reserved for PPDU parsing reaches the minimum time required by the receiver, a field that may need to be added is introduced in the last symbol of the PPDU, namely a PE field. The duration based on the PE field allows the time reserved for PPDU parsing to meet the minimum time required by the receiver. The duration of the PE field may also be called the nominal packet extension time (nominal Tpe).The processing time provided by post-FEC padding and the nominal packet extension time are combined to obtain the actual packet extension time (Tpe). In other words, the actual packet extension time Tpe is greater than or equal to the nominal packet extension time. Typically, the time of... Petition 870250091376, dated 07 / 10 / 2025, page 43 / 171 31 / 102 Actual packet extension is a minimum value required by the receiver. The nominal packet extension time (nominal Tpe) is related to a nominal packet padding value and a value of a. The nominal packet padding value may also be called the minimum packet padding value or small packet padding value.

[0070] For ease of understanding, FIG. 3 is a diagram of a PPDU. FIG. 3 shows the duration of a PE field in a PPDU when a=1, a=2, a=3 and a=4 in FIG. 2. For the same nominal packet padding value, the duration corresponding to post-FEC padding varies based on different values ​​of a. Therefore, the transmitter may not add the PE field or may add a PE field with a different duration. When the duration corresponding to post-FEC padding is long, the duration of the PE field is short. When the duration corresponding to post-FEC padding is short, the duration of the PE field is long. For example, when a=1, the duration corresponding to post-FEC padding is about 12 ps, 12 μs is sufficient for the receiver to decode the subcarriers occupied by pre-FEC padding and excess information, and the transmitter does not need to add the PE field.When a=2, the duration corresponding to post-FEC padding is approximately 8 ps, 8 μs is sufficient for the receiver to decode the subcarriers occupied by pre-FEC padding and excess information, and the transmitter does not need to add the PE field. When a=3, the duration corresponding to post-FEC padding is approximately 4 ps, and 4 ps is not sufficient for the receiver to completely decode the subcarriers occupied by pre-FEC padding and excess information. In this case, the transmitter can add a PE field, and the duration of the PE field plus 4 ps is sufficient for the receiver to completely decode the subcarriers occupied by pre-FEC padding and excess information. Petition 870250091376, dated 07 / 10 / 2025, p. 44 / 171 32 / 102 information. When a=4, the duration corresponding to post-FEC padding is approximately 0 ps, ​​and the duration corresponding to post-FEC padding is not sufficient for the receiver to completely decode the subcarriers occupied by pre-FEC padding and excess information. In this case, the transmitter can add a PE field, and the duration of the PE field plus the duration corresponding to post-FEC padding is sufficient for the receiver to completely decode the subcarriers occupied by pre-FEC padding and excess information.

[0071] For example, Table 1 shows a relationship between the nominal packet extension time, the value of aeo, and the nominal packet filling value. Table 1 Nominal packet extension time value (nominal Tpe value) a Nominal Packet Fill Value (nominal pack fill value) 0 με 8 με 16 με 1 0 ps 0 ps 4 ps 2 0 ps 0 ps 8 ps 3 0 ps 4 ps 12 ps 4 0 ps 8 ps 16 ps

[0072] The second line (bold font) in Table 1 represents the nominal packet padding value, which can be 0 ps, ​​8 μs, or 16 με. The third and sixth lines in Table 1 are the nominal packet extension time, i.e., the duration of the PE field. The nominal packet extension time may not be equal to the minimum time (i.e., the nominal packet padding value, such as 0 ps, ​​8 ps, or 16 ps) required by the receiver. For example, the nominal packet padding value is equal to 8 ps. As described above, when a=1, 12 ps is sufficient for the receiver to decode the subcarriers occupied by pre-FEC padding and excess information. Petition 870250091376, dated 07 / 10 / 2025, page 45 / 171 33 / 102 the PE field does not need to be added, and the nominal packet extension time can be 0 μs. When a=3, 4 μs is not sufficient for the receiver to completely decode the subcarriers occupied by pre-FEC padding and excess information. In this case, the transmitter adds a PE field, and the duration of the PE field is 8 μs - 4 μs = 4 μs, that is, the nominal packet extension time can be 4 μs.

[0073] For both ends of the communication, to ensure that the receiver has sufficient time to analyze the PPDU received from the transmitter, the receiver can indicate to the transmitter a nominal packet padding value used by the transmitter when sending the PPDU to the receiver. The transmitter can determine the duration of the PE field based on the nominal packet padding value indicated by the receiver and a. The transmitter pads, based on the duration of the PE field, the packet extension included in the PPDU sent to the receiver. Since the data in the packet extension does not need to be analyzed by the receiver, it is possible to ensure that the receiver has sufficient time to analyze the received PPDU.

[0074] Next, we describe two solutions in which the receiver indicates the nominal packet padding value to the transmitter. The two solutions described below are called static indication mode and dynamic indication mode. In static indication mode, the receiver indicates the nominal packet padding value based on a nominal packet padding subfield. In dynamic indication mode, the receiver indicates the nominal packet padding value by indicating a modulation threshold based on a physical packet extension (PPE) thresholds subfield. Static indication mode and dynamic indication mode can be distinguished by the presence of physical packet extension thresholds subfield. Petition 870250091376, dated 07 / 10 / 2025, page 46 / 171 34 / 102 (PPE) thresholds present subfield). When a value in the physical layer packet extension thresholds presence subfield is 0, this indicates that the physical layer packet extension thresholds subfield is not present, and the nominal packet padding subfield indicates the nominal packet padding value. When the value in the physical layer packet extension thresholds presence subfield is 1, this indicates that the physical layer packet extension thresholds subfield is present, and the physical layer packet extension thresholds subfield indicates the nominal packet padding value. It can be considered that when the value in the physical layer packet extension thresholds presence subfield is 1, the nominal packet padding subfield has no meaning, and the nominal packet padding value is determined by the packet extension thresholds subfield.

[0075] Next, we describe the static indication method and the dynamic indication method. To facilitate the description, an example in which a first device is a receiver and a second device is a transmitter is used below.

[0076] Static indication mode: When the value of the physical layer packet extension threshold presence subfield is 0, for the nominal packet padding value indicated by the nominal packet padding subfield, refer to Table 2. A STA in Table 2 can be an access point station or a non-access point station. Table 2. Nominal packet padding subfield Subfield Definition Meaning Nominal Packet Fill Subfield If a PPE threshold presence subfield indicates 0, the subfield of If the nominal packet fill value is 0 μs for all constellations, NSSs, and RU allocations supported by the STA, the Petition 870250091376, dated 07 / 10 / 2025, p. 47 / 171 35 / 102 Subfield Definition Meaning Nominal Packet Filling will indicate a nominal packet fill value, and the value will be the same for all modulation schemes, number of spatial streams (NSS), and resource unit (RU) allocations. (Indicates the nominal packet fill value to be used for all constellations, NSS allocations, and RU allocations that the STA supports if the PPE Threshold Presence subfield is set to 0.) The nominal packet fill subfield will be set to 0. (Set to 0 if the nominal packet fill value is 0 ps for all constellations, NSS allocations, and RU allocations supported by the STA). If the nominal packet fill value is 8 μs for all constellations, NSSs, and RU allocations that the STA supports, the nominal packet fill subfield is set to 1.(Set to 1 if the nominal packet padding is 8 ps for all constellations, NSS allocations, and RUs supported by the STA). If the nominal packet padding value is 16 μs for all constellations, NSSs, and RU allocations that the STA supports, the nominal packet padding subfield is set to 2. (Set to 2 if the nominal packet padding is 16 ps for all constellations.) Petition 870250091376, dated 07 / 10 / 2025, page 48 / 171 36 / 102 Subfield Definition Meaning (NSS and RU allocations supported by STA). When the PPE threshold presence subfield is 1, the nominal packet filling subfield is set to 3, indicating a reserved state. (The value 3 is reserved, Reserved if the PPE Threshold Presence subfield is 1).

[0077] The PPE thresholds present the nominal packet padding subfield and subfield are carried in a HE physical layer capabilities information field, as shown in FIG. 4. FIG. 4 schematically shows a HE physical layer capabilities information field. The PPE threshold presence subfield (B55) occupies 1 bit. The nominal packet padding subfield (B78 and B79) occupies 2 bits. The HE physical layer capabilities information field is included in an HE capabilities element, as shown in FIG. 5.The HE capabilities element may include an element field, a length field, an element ID extension field, a HE (medium access control, MAC) capabilities information field, a HE PHY capabilities information field, a supported modulation and coding scheme (MCS), and a spatial flow number set field. Petition 870250091376, dated 07 / 10 / 2025, page 49 / 171 37 / 102 spatial streams, NSS) (Supported HE-MCS and NSS Set) and may also include a physical layer packet extension thresholds field (PPE thresholds field). In this embodiment of this request, the number of bits occupied by each field or subfield included in the HE capabilities element is not limited. As shown in FIG. 5, the element field occupies 1 byte, the length field occupies 1 byte, the element identifier extension field occupies 1 byte, the HE medium access control resource information field occupies 6 bytes, the HE physical layer resource information field occupies 11 bytes, and the physical layer packet extension thresholds field occupies a variable number of bits. Furthermore, the physical layer packet extension thresholds field is optional, i.e., not mandatory.

[0078] It can be understood that, when a PPE threshold value has a subfield in FIG. 4 of 1, the nominal packet fill value is indicated by the PPE threshold field in FIG. 5. When a PPE threshold value has a subfield in FIG. 4 of 0, the nominal packet fill value is indicated by the nominal packet fill subfield in FIG. 4.

[0079] As the number of space streams supported by each device increases, for example, the number of space streams supported by each device changes from 8 to 16, a modulation scheme supported by each device changes from 1K quadrature amplitude modulation (QAM) to 4K-QAM, and a bandwidth supported by each device is changed from 160 MHz to 320 MHz. In these cases, the receiver needs more processing time. In view of this, a nominal packet filling value greater than 16 μs is proposed, for example, a nominal packet filling value supporting 20 μs is proposed in 802.11be. The NSS can be replaced by a number of space-time streams (NSTS) in embodiments of this application. Petition 870250091376, dated 07 / 10 / 2025, page 50 / 171 38 / 102

[0080] The nominal packet padding value of 20 με can be indicated by a common nominal packet padding subfield shown in FIG. 6. The common nominal packet padding subfield in FIG. 6 and the nominal packet padding subfield in FIG. 4 differ only in name. Therefore, Table 2 is also applicable to the nominal packet padding value indicated by the common nominal packet padding subfield. One difference from the nominal packet padding subfield is that, in the common nominal packet padding subfield, the value 3 is no longer reserved.When the PPE threshold presence subfield is 0, a common nominal packet padding subfield value is 3 if the nominal packet padding value is 16 μs corresponding to modes with constellation<=1024, NSTS<=8, and RU allocations<=996*2 that the STA supports; otherwise, the nominal packet padding value is 20 ps. (Set to 3 if the nominal packet padding is 16 ps for all modes with constellation<=1024, NSTS<=8, and RU<=996*2, and 20 ps for all other modes supported by the STA. Reserved if the PPE Threshold Presence subfield is 1). For example, the STA is a receiver and the AP is a transmitter.When the nominal packet padding subfield value is 3, a constellation index corresponding to a modulation scheme supported by the receiver is less than or equal to a constellation index corresponding to 1K-QAM, an NSTS is less than or equal to 8, and a transmitter MRU / RU allocation size is less than or equal to 2*996, a nominal packet padding value is 16 ps; otherwise, a nominal packet padding value is 20 ps. The constellation supported by the STA is notified by the STA to the AP via capacity information.

[0081] Dynamic indication mode: A subfield of physical layer packet extension threshold presence and a physical layer packet extension threshold field ((PPE thresholds Petition 870250091376, dated 07 / 10 / 2025, page 51 / 171 The values ​​39 / 102) in the PPDU indicate the nominal packet padding value. Compared to static indication mode, in dynamic indication mode, different nominal packet padding values ​​can be indicated based on different NSTSs, RU / multi-RU (multiple resource unit, MRU) sizes, and modulation schemes. This is more flexible. In some embodiments of this application, the MRU includes a plurality of RUs. The plurality of RUs can be a plurality of consecutive RUs or it can be a plurality of non-consecutive RUs.

[0082] FIG. 7 is a diagram of the structure of a physical layer packet extension threshold field. The physical layer packet extension threshold field includes a space-time streams subfield (number of space-time streams, NSTS), a RU Index Bitmask subfield, a Physical Layer Packet Extension Thresholds info field, and a Physical Layer Packet Extension padding field. The NSTS subfield can be equivalently replaced by an NSS subfield and can indicate a number of space-time streams used to send the PPDU. For example, the NSTS subfield occupies 3 bits, and the values ​​of the 3 bits are from 0 to 7, which can indicate respectively a first stream to an eighth stream. In other words, a value / status value of the 3 bits corresponds to a number of space-time streams. The bitmask subfield of the RU index can indicate an RU size.Table 3 shows a relationship between the bitmask subfield of the RU index and the size of the RU. Table 3 RU Allocation Index RU Allocation Size 0 242 1 484 2 996 3 2*996 Petition 870250091376, dated 07 / 10 / 2025, page 52 / 171 40 / 102

[0083] The bitmask subfield of the RU index is a bitmap. In Table 3, the RU allocation index indicates a specific bit in the bitmap. For example, in Table 3, the RU index bitmask occupies 4 bits. The first line in Table 3 indicates that the first bit of the RU index bitmask is set to 1, and therefore a corresponding RU indicated in FIG. 7 is 242. Similarly, the second line indicates that the second bit of the RU index bitmask is set to 1, and therefore a corresponding RU indicated in FIG. 7 is 484. The rest can be deduced by analogy. The RU allocation index can also be called the RU sequence number. A smaller sequence number indicates a smaller RU size. In this specification, a granularity of the RU size is subcarrier. For example, 242 refers to 242 subcarriers and 484 refers to 484 subcarriers.

[0084] It should be understood that one or more NSTSs, a RU, and a modulation scheme used by the transmitter are different, and the minimum processing time (or corresponding nominal packet padding values) required by the receiver varies accordingly. In one implementation, the modulation thresholds corresponding to the NSTSs of a first stream to an Nth stream and different RU sizes indicated from a minimum granularity are provided exhaustively or transversally. A value of N can be a maximum value of bits used by the NSTS subfield plus 1. For example, when the NSTS subfield uses 3 bits and the maximum value of the 3 bits is 7, the maximum number of streams that can be indicated by the NSTS subfield is 8 (7+1=8). For example, when the NSTS subfield uses 6 bits and the maximum value of the 6 bits is 15, the maximum number of streams that can be indicated by the NSTS subfield is 16 (15+1=16). In this specification, a set of values ​​for the NSTS subfield can be denoted as [1,...[NSTN+1]. The Nth flow is a (NSTS+1)th flow.

[0085] The modulation threshold can indicate a scheme of Petition 870250091376, dated 07 / 10 / 2025, page 53 / 171 41 / 102 modulation, and the modulation threshold can be understood as a constellation index threshold corresponding to the modulation scheme. A relationship between the modulation scheme and the corresponding constellation index is shown in Table 4. Table 4. Constellation index Index of constellation Corresponding transmission constellation 0 Binary phase shift keying (BPSK) 1 Quadrature phase shift keying (QPSK) 2 Quadrature amplitude modulation (QAM) 3 64-QAM 4 256-QAM 5 1024-QAM 6 Reserved 7 None

[0086] For each RU, the modulation thresholds corresponding to the NSTSs from the first flow to the Nth flow and the different RU sizes indicated from the minimum granularity are provided based on the PPE threshold information field in a cross-sectional manner. The PPE threshold information field includes a set of packet extension threshold subfields that indicate modulation thresholds corresponding to different nominal packet padding values. In other words, the PPE threshold information field includes sets of a plurality of packet extension threshold subfields corresponding to different nominal packet padding values, each set of packet extension threshold subfields includes a plurality of packet extension threshold subfields, and each packet extension threshold subfield Petition 870250091376, dated 07 / 10 / 2025, page 54 / 171 42 / 102 packet extension indicates a modulation threshold corresponding to an NSS, where ne is a RU corresponding to a sequence number b. It should be understood that a range of values ​​for n is [1,..., N]. The sequence number b here can be considered as a RU allocation index and indicates a RU size. For example, a range of values ​​for b is [x,..., m], where [x,..., m] is a list of bits formed by the sequential configuration of all bits set to 1 in the bit mask subfield of the RU index, ex is the least significant bit in the bit list. (where b belongs to the set of RU allocation indices equal to the ordered list of bit positions of all bits that are set to 1 in the Bit Mask subfield of the RU index, with y being the smallest value). Table 3 is used as an example. If all bits in the bitmask subfield of the RU index are set to 1, the range of values ​​for b will be [0,..., 3], that is, x will be equal to 0 and b will be equal to 3.If the second and fourth bits in the RU index bitmask subfield are set to 1, the range of values ​​for b will be [1, 3].

[0087] For example, FIG. 8 is a diagram of a structure of a PPE threshold information field. In FIG. 8, the PPE threshold information field includes a set of packet extension threshold subfields indicating modulation thresholds corresponding to a nominal packet filling value of 8 μs and a set of packet extension threshold subfields indicating modulation thresholds corresponding to a nominal packet filling value of 16 ps. In this specification, the set of packet extension threshold subfields indicating modulation thresholds corresponding to the nominal packet filling value of 8 ps is called PPET8 NSTSn RUb subfields, and any subfield of the PPET8 NSTSn RUb subfields is called PPET8 NSTSn RUb subfield, indicating a modulation threshold corresponding to an NSTS being ne a RU corresponding to a sequence number b. By Petition 870250091376, dated 07 / 10 / 2025, page 55 / 171 43 / 102 For example, if the PPET8 NSTSn RUb subfield occupies 3 bits, the PPET8 NSTSn RUb subfields can indicate eight modulation thresholds. Similarly, the set of packet extension threshold subfields that indicate the modulation thresholds corresponding to the nominal packet padding value of 16 μs can be called PPET16 NSTSn RUb subfields, and any subfield of the PPET16 NSTSn RUb subfields is called a PPET16 NSTSn RUb subfield, indicating a modulation threshold corresponding to an NSTS being n and a RU corresponding to a sequential number b. The PPET8 NSTSn RUb subfield can also be called PPET8, i.e., PPET8 represents a PPET8 NSTSn RUb subfield. Similarly, the PPET16 NSTSn RUb subfield can be referred to as PPET16 for short.

[0088] In FIG. 8, the value of n ranges from 1 to N, that is, n is an element in [1,..., N], and b ranges from x to m. It can be considered that FIG. 8 provides indications of a first stream for an Nth stream to transmit exhaustively or transversally and provides RU sizes indicated from a minimum granularity in an exhaustively or transversal way. In other words, the subfields PPET16 NSTSn RUb and PPET8 NSTSn RUb are present for all values ​​of n and b where 1 ≤ n < (N) and where b = [x, ..., m] is the set of integers equal to the ordered list of bit positions of all bits that are defined as 1 in the Bit Mask subfield of index RU, with m being the smallest value.

[0089] Based on the indication in FIG. 8, the nominal packet filling value used by the second device is determined by a combination of the PPET8 NSTSn RUb subfield and the PPET16 NSTSn RUb subfield. Specifically, the second device can determine the nominal packet filling value according to Table 5. In other words, if a result of the comparison between a constellation index corresponding to a modulation scheme used by the second device and a modulation threshold indicated by the subfields Petition 870250091376, dated 07 / 10 / 2025, page 56 / 171 44 / 102 If PPET8 NSTSn RUb is the result of comparing the constellation index corresponding to the modulation scheme used by the second device and a modulation threshold indicated by the PPET16 NSTSn RUb subfields, and if these subfields meet a line condition in Table 5, the nominal packet filling value will be a line-corresponding value. Table 5. Limits of PPE in PPET8 and PPET16 (PE thresholds for PPET8 and PPET16) Condition 1 Condition 2 Nominal Packet Fill Value Result of comparing a constellation index x of a HE PPDU with an NSTS value of ne, an allocation index RU = (b+DCM), and a PPET8 subfield NSTSn RU (b+DCM) (Result of comparing the constellation index x of a HE PPDU with the NSTS value neo, the allocation size of RU that corresponds to the allocation index of RU = (b+DCM) for the value in the PPET8 subfield NSTSn RU (b+DCM)) Result of comparing a constellation index x of a HE PPDU with an NSTS value of ne, an allocation index RU = (b+DCM), and a PPET16 subfield NSTSn RU (b+DCM) (Result of comparing the constellation index x of a HE PPDU with the NSTS value neo, the allocation size of RU that corresponds to the allocation index of RU = value (b+DCM) for the value in the PPET16 NSTSn RU subfield (b+DCM)) The HE PPDU uses a nominal package fill value corresponding to the constellation index = x,NSTS = ne RU allocation index = (b+DCM) (nominal packet padding for a HE PPDU transmitted to this STA using constellation index = x, NSTS = ne RU allocation size corresponding to RU allocation index = (b+DCM)) x is greater than or equal to x is less than 8ps, Petition 870250091376, dated 07 / 10 / 2025, page 57 / 171 45 / 102 Condition 1 Condition 2 Nominal packet filling value at a modulation threshold indicated by a PPET8 (x greater than or equal to PPET8) modulation threshold indicated by a PPET16 or a PPET16 is set to none (x less than PPET16 or PPET16 equal to None) x is greater than a modulation threshold indicated by a PPET8 or a PPET8 is set to none (x greater than PPET8 or PPET8 equal to None) x is greater than or equal to a modulation threshold indicated by a PPET16 (x greater than or equal to PPET16) 16ps All other combinations not listed in this table (All other combinations not otherwise listed in this table) Qps Note: If the HE PPDU uses dual carrier modulation (DCM), DCM=1; otherwise, DCM=0 (NOTE: DCM=1 if the HE PPDU uses DCM; DCM=0 otherwise)

[0090] It should be noted that the modulation scheme in Table 5 refers to a modulation scheme based on the modulation scheme corresponding to RUb and with DCM being considered. None in Table 5 can be understood as if a corresponding condition were not considered. For example, if a PPET8 subfield is set to none, an indication of the PPET8 subfield will not be used to determine the nominal packet padding value.

[0091] As shown in Table 5, if the result of the comparison between the constellation index x corresponding to the modulation scheme used by the second device and the threshold Petition 870250091376, dated 07 / 10 / 2025, page 58 / 171 46 / 102 of modulation indicated by the PPET8 subfield meets condition 1, and the result of the comparison between the constellation index x corresponding to the modulation scheme used by the second device and the modulation threshold indicated by the PPET16 subfield meets condition 2, the nominal packet filling value is a value corresponding to both condition 1 and condition 2.

[0092] To facilitate understanding, FIG. 9 shows how the second device determines the nominal packet filling value based on the constellation index x corresponding to the modulation scheme used, the modulation threshold (i.e., A1) indicated by the PPET8 subfield, and the modulation threshold (i.e., A2) indicated by the PPET16 subfield. In FIG. 9, a horizontal coordinate represents a RU, a vertical coordinate represents an NSS, and a point in FIG. 9 corresponds to an NSS and corresponds to a RU / MRU. A point in the second row and third column in FIG. 9 is used as an example. If the constellation index x corresponding to the modulation scheme used by the second device is less than A1, the nominal packet filling value will be 0 gs.If the constellation index x corresponding to the modulation scheme used by the second device is greater than or equal to A1, and the constellation index x corresponding to the modulation scheme used by the second device is less than A2, or the PPET16 subfield is set to none, the nominal packet padding value will be 8 gs. If the constellation index x corresponding to the modulation scheme used by the second device is greater than A1 or PPET8 is set to none, and the constellation index x corresponding to the modulation scheme used by the second device is greater than or equal to A2, the nominal packet padding value will be 16 gs.

[0093] As the number of spatial streams supported by a device increases, the modulation schemes increase and the supported bandwidth increases, a padding value Petition 870250091376, dated 07 / 10 / 2025, page 59 / 171 A larger nominal packet size of 47 / 102 needs to be specified. For example, in 802.11be, a nominal packet padding value supporting 20 μs is proposed.

[0094] For the nominal packet padding value of 20 μs, a PPET threshold field structure is shown in FIG. 10. The PPET threshold field includes an NSS packet extension field (NSS_PE), an RU index bitmask subfield, a PPE threshold information field, and a PPE padding field. A difference from FIG. 7 lies in the fact that the NSS_PE field indicates a number of spacetime streams used to send the PPDU, and the NSS_PE field can occupy 4 bits. In this case, a range of NSS_PE+1 values ​​is [1,..., N], and N equals 16. The RU index bitmask subfield can occupy 5 bits. In this case, the maximum granularity of an RU indicated by the RU index bitmask subfield is 3*996. For another example, the bitmask subfield of the RU index can occupy 6 bits. In this case, the maximum granularity of an RU indicated by the bitmask subfield of the RU index is 4*996.Certainly, the bitmask subfield of the RU index can occupy more bits, and an RU size is 242+484, 484+996, 242+484+996, 2*996+484, 2*996+996, 3*996+484 or similar. In this case, a range of values ​​for b is [y,..., m], where [y,..., m] is a list of bits formed by the sequential configuration of all bits defined as 1 in the bitmask subfield of the RU index, and y is the least significant bit in the list of bits. Table 6 is used as an example. All bits in the bitmask subfield of the RU index are defined as 1, and the range of values ​​for b can be [0,..., 4], that is, y equals 0 and y equals 4. Table 6 RU Allocation Index RU Allocation Size 0 242 1 484 Petition 870250091376, dated 07 / 10 / 2025, p. 60 / 171 48 / 102 2 242+484, 996 3 996+484, 2x996, 242+484+996 4 2x996+484, 3x996, 3x996+484, 4x996

[0095] Correspondingly, in 802.11be, a structure of the PPE threshold information field is shown in FIG. 11. Subfields PPET8 NSSn RUb in FIG. 11 are subfields with an NSS being n, an RU corresponding to a sequence, and PPET being 8 μs. The subfields PPETmax NSSn RUb are subfields with an NSS being n, an RU corresponding to a sequence, and PPET being 16 μs or 20 ps. The value of n ranges from 1 to NSS_PE 1, that is, n is an element in [1,..., NSS_PE+1], and b ranges from yam, where b=[y,..., m].

[0096] Based on the PPE threshold information field in FIG. 11, the second device can determine the nominal packet filling value according to Table 7. Similar to Table 5, if the result of the comparison between the constellation index corresponding to the modulation scheme used by the second device and the modulation threshold indicated by the PPET8 NSTSn RUb subfields and the result of the comparison between the constellation index corresponding to the modulation scheme used by the second device and the modulation threshold indicated by the PPETmax NSTSn RUb subfields meet a condition of a row in Table 7, the nominal packet filling value will be a value corresponding to the row. Table 7 PPE thresholds of a PPET8 and a PPET16 Condition 1 Condition 2 Nominal Packet Fill Value Petition 870250091376, dated 07 / 10 / 2025, page 61 / 171 49 / 102 Result of comparing a constellation index x of an EHT PPDU with an NSS value of ne, an allocation index RU = (b+DCM), and a PPET8 subfield NSTSn RU (b+DCM) (Result of comparing the constellation index c of an EHT PPDU with the NSS value neo, an allocation size of RU that corresponds to the allocation index of RU = (b+DCM) for the value no PPET8 NSTSn RU (b+DCM)) Result of comparing a constellation index c of an EHT PPDU with an NSS value of ne, an allocation index RU = (b+DCM), and a PPETmax subfield NSTSn RU(b+DCM) (Result of comparing the constellation index x of an HE PPDU with the NSS value neo, an allocation size of RU that corresponds to the allocation index of RU = value (b+DCM) for the value no PPETmax NSTSn RU (b+DCM)) The EHT PPDU uses a nominal packet fill value corresponding to the constellation index = c,NSS = ne RU allocation index = (b+DCM) (nominal packet padding for an EHT PPDU transmitted to this STA using constellation index = x, NTS = ne RU allocation size corresponding to RU allocation index = (b+DCM)) c is greater than or equal to a modulation limit indicated by a PPET8 (c greater than or equal to PPET8) c is less than a modulation limit indicated by a PPETmax or a PPETmax is set to none (c less than PPETmax or PPETmax equal to None) 8ps c is greater than a modulation limit indicated by a PPET8 or a PPET8 is set to none (c greater than PPET8 or PPET8 equal to None) c is greater than or equal to a modulation limit indicated by a PPETmax (c greater than or equal to PPETmax) If c is less than or equal to 5 and b DCM is less than or equal to 3, a corresponding nominal packet padding value is 16 μs (16 ps if c<5 and (b+DCM)<3); or if c equals 6 and b DCM equals 4,a corresponding nominal packet fill value is 20 μs (20 ps if c=6 or, Petition 870250091376, dated 07 / 10 / 2025, p. 62 / 171 50 / 102 (b+DCM)=4) All other combinations not listed in the table (all other cases with PPET8 and PPETmax values ​​present) 0ps

[0097] As bandwidth increases, the channel quality of different spatiotemporal streams in a plurality of spatiotemporal streams varies. For example, the channel quality of the first stream is good, and the channel quality of the other stream is poor. If the same modulation scheme is used in the plurality of spatiotemporal streams, a small signal-to-noise ratio (SNR) needs to be adapted to meet the requirement of using a small modulation scheme. Therefore, different modulation schemes can be used in different spatiotemporal streams, so that the SNR of each spatiotemporal stream is large. There is no corresponding solution for how the transmitter determines the nominal packet extension time used when the receiver supports the transmitter in sending the PPDU to the receiver in a configured frequency domain feature or spatiotemporal stream using a plurality of modulation schemes.Alternatively, there is no corresponding solution for how the receiver indicates the nominal packet padding value used when the receiver supports the transmitter in sending the PPDU to the receiver in a configured frequency domain resource or spacetime stream using a plurality of modulation schemes.

[0098] In embodiments of this application, the fact that the transmitter uses a plurality of modulation schemes includes the fact that the transmitter uses a plurality of modulation schemes in a plurality of spatiotemporal / spatial streams. For example, the transmitter uses BPSK in a first spatial stream and uses 16-QAM in a second stream. The fact that the transmitter uses a plurality of modulation schemes also includes the use of a plurality of modulation schemes in one or more RUs. By Petition 870250091376, dated 07 / 10 / 2025, page 63 / 171 51 / 102 example, a first RU includes a first set of subcarriers and a second set of subcarriers, and the transmitter uses BPSK on the first set of subcarriers and 16-QAM on the second set of subcarriers. The way the transmitter uses the plurality of modulation schemes is not limited in modes of this application.

[0099] The fact that the transmitter sends the PPDU to the receiver using a modulation scheme can be replaced by the fact that the transmitter sends the PPDU to the receiver using the same MCS. Similarly, the fact that the transmitter sends the PPDU to the receiver using a plurality of modulation schemes can be replaced by the fact that the transmitter sends the PPDU to the receiver using different MCSs. In other words, the fact that the transmitter uses a modulation scheme can be understood as the fact that the transmitter uses the same MCS. That the transmitter uses a plurality of modulation schemes can be understood as the transmitter using different MCSs. The modulation scheme in some embodiments of this application can be replaced by an MCS. Furthermore, in embodiments of this application, “different MCSs” includes “different modulation schemes” and / or “different code rates”.

[00100] The fact that the receiver can support the transmitter in using multiple modulation schemes in the configured frequency domain or space-time stream can be considered a receiver capability. This capability is related to the nominal packet filling value, and different capabilities can be associated with different nominal packet filling values. The receiver can notify the transmitter of the receiver's capability so that the transmitter can determine, based on the receiver's capability, an appropriate nominal packet filling value. That the receiver notifies the transmitter of the receiver's capability can alternatively be understood as Petition 870250091376, dated 07 / 10 / 2025, page 64 / 171 52 / 102 that the receiver indicates the nominal packet filling value to the transmitter based on capacity information. In embodiments of this application, the nominal packet filling value may be indicated to the transmitter in a manner similar to the previous static indication method, or the nominal packet filling value may be indicated to the transmitter in a manner similar to the previous dynamic indication method.

[00101] The technical solutions provided in the modalities of this application are described below in detail with reference to the attached drawings.

[00102] A communication method provided in embodiments of this application refers to the interaction between two communication devices. The two communication devices are, for example, a first device and a second device. For example, the first device is a receiver and the second device is a transmitter. The first device may indicate to the second device a nominal packet padding value that needs to be used by the second device to send a physical layer data packet to the first device. The second device determines the nominal packet extension time based on the nominal packet padding value indicated by the first device and sends the physical layer data packet to the first device.The steps performed by the first device can be implemented by the first device itself, or they can be implemented by components (e.g., modules such as a chip, a processing unit, or a processor) within the first device. For example, the first device could be station 1 in FIG. 1, or it could be a chip (system) within station 1 in FIG. 1. The steps performed by the second device can be implemented by the second device itself, or they can be implemented by components (e.g., modules such as a chip, a processing unit, or a processor) within the second device. The second device could be the AP shown. Petition 870250091376, dated 07 / 10 / 2025, page 65 / 171 53 / 102 in FIG. 1, or it could be a chip (system) in the AP in FIG. 1.

[00103] In embodiments of this application, both when, it is assumed that and if mean that a device performs the corresponding processing in an objective situation, but do not constitute a time constraint, do not require the device to take a decisive action during implementation or do not imply other constraints. If and if are assumed to be interchangeable and, unless otherwise specified, when and in a case where... can be interchangeable. The steps shown by dashed lines in the flowcharts in embodiments of this application are optional steps, i.e., steps that cannot be performed.

[00104] In embodiments of this application, the fact that the second device uses at least two modulation schemes means that the second device sends a PPDU to the first device using at least two modulation schemes. Furthermore, the nominal packet padding values ​​in embodiments of this application include a plurality of values ​​that increase sequentially. For example, the nominal packet padding values ​​may include four values: 0 ps, ​​8 ps, 16 ps, and 20 ps. Of course, the nominal packet padding values ​​may include even more values, for example, a nominal packet padding value of 24 μs or 28 ps.

[00105] In some embodiments of this request, an NSTS can be replaced by an NSS. For example, PPET8 NSTSn RUb subfields can be replaced by PPET8 NSSn RUb subfields, PPET16 NSTSn RUb subfields can be replaced by PPET16 NSSn RUb subfields, and PPETmax NSTSn RUb subfields can be replaced by PPETmax NSSn RUb subfields. PPET16 NSTSn RUb subfields can be replaced by PPETmax NSTSn RUb subfields. In some embodiments of this request, * ex in the formula can be substituted for each other.

[00106] FIG. 12 shows a first method of indicating Petition 870250091376, dated 07 / 10 / 2025, p. 66 / 171 54 / 102 capacity in a wireless local area network according to an embodiment of this application. A 1200 method shown in FIG. 12 is applicable to the scenario shown in FIG. 1. For example, a first device could be station 1 in FIG. 1, and a second device could be the AP in FIG. 1. In the 1200 method, the first device can indicate to the second device, based on a nominal packet padding subfield, a nominal packet padding value that needs to be used by the second device when sending a physical layer data packet to the first device. The 1200 method includes the following steps.

[00107] S1201: The first device sends capacity information to the second device, and correspondingly, the second device receives the capacity information, where the capacity information includes the nominal packet padding subfield, and the nominal packet padding subfield indicates the corresponding nominal packet padding value used when the second device sends the PPDU to the first device.

[00108] Capacity information may indicate the nominal packet padding value used by the second device when sending the physical layer data packet to the first device. For example, capacity information includes the nominal packet padding subfield, and the nominal packet padding subfield indicates the corresponding nominal packet padding value used when the second device sends the PPDU to the first device. Optionally, capacity information also includes a physical layer packet extension threshold presence subfield, the nominal packet padding subfield indicates the corresponding nominal packet padding value used when the second device sends the PPDU to the first device, and a value of 0 in the physical layer packet extension threshold presence subfield. Alternatively, when Petition 870250091376, dated 07 / 10 / 2025, page 67 / 171 55 / 102 if the physical layer packet extension threshold presence subfield value is 1, the nominal packet padding subfield indicates the corresponding nominal packet padding value used when the second device sends the PPDU to the first device.

[00109] Capacity information can be included in the physical layer data packet, for example, the PPDU, sent by the first device to the second device. For example, capacity information can be ported into a physical layer capacity information field. For more details, see the related content in FIGS. 4 to 6. Details are not described again in this document.

[00110] In method 1200, the nominal packet filling value is for all NSSs and all RU allocations that the first device supports, and for at least two modulation schemes used by the second device in a configured frequency domain resource or a configured spatial stream. In this embodiment of this application, the fact that the second device uses two modulation schemes means that the constellation indices corresponding to the modulation schemes used by the second device include at least two constellation indices, or that the second device uses modulation schemes corresponding to at least two constellation indices.

[00111] The following uses a plurality of cases as examples to describe how the nominal packet padding subfield indicates the nominal packet padding value used by the second device when the second device uses at least two modulation schemes. Cases 1 to 3 below are for all NSSs and all RU allocations.

[00112] Case 1: When a nominal packet padding value used by the second device to send the PPDU to the first device using a modulation scheme is a first Petition 870250091376, dated 07 / 10 / 2025, page 68 / 171 56 / 102 Nominal Packet Filling Value: A nominal packet filling value used by the second device when sending the PPDU to the first device using at least two modulation schemes can be considered a second nominal packet filling value by default. A level of the second nominal packet filling value is higher than a level of the first nominal packet filling value. For example, the level of the second nominal packet filling value is one level higher than that of the first nominal packet filling value. For example, the first nominal packet filling value is 0 ps, ​​and the second nominal packet filling value is 8 ps; or the first nominal packet filling value is 8 ps, and the second nominal packet filling value is 16 ps. Alternatively, the first nominal packet filling value is 16 ps, and the second nominal packet filling value is 20 ps.The rest can be deduced by analogy.

[00113] For Case 1, a mapping relationship between at least one nominal packet fill subfield status value and at least one nominal packet fill value can be defined, such that the first device indicates, based on the nominal packet fill subfield status value, the nominal packet fill value used by the second device. For example, the nominal packet fill value indicated by the nominal packet fill subfield is shown in Table 8. Table 8. Nominal packet padding subfield Subfield Definition Meaning Nominal Packet Fill Subfield If a PPE threshold presence subfield indicates 0, then the nominal packet fill value is 8 μβ for all constellations, NSSs, and RU allocations that Petition 870250091376, dated 07 / 10 / 2025, p. 69 / 171 57 / 102 The nominal packet padding subfield will indicate a nominal packet padding value, and the value will be the same for all modulation schemes, number of spatial streams (NSS), and resource unit (RU) allocations. (Indicates the nominal packet padding to be used for all constellations, NSS allocations, and RU allocations that the STA supports if the PPE Threshold Presence subfield is set to 0.) If the nominal packet padding value is 8 ps for all constellations, NSS allocations, and RU allocations supported by the STA, the nominal packet padding subfield is set to 1. (Set to 0 if the nominal packet padding is 8 ps for all constellations, NSS allocations, and RU allocations supported by the STA). If the nominal packet padding value is 16 μβ for all constellations, NSSs, and RU allocations that the STA supports, the nominal packet padding subfield is set to 1.(Set to 1 if the nominal packet padding is 8 ps for all constellations, NSS allocations, and RUs supported by the STA). If the nominal packet padding value is 20 μβ for all constellations, NSSs, and RU allocations that the STA supports, the nominal packet padding subfield is set to 2. (Set to 2 if the nominal packet padding is 16 ps for all constellations). Petition 870250091376, dated 07 / 10 / 2025, pp. 70 / 171 58 / 102 NSS and RU allocations supported by STA).

[00114] As shown in Table 8, the nominal package fill subfield status value is 0 and the nominal package fill value is 8 μs; the nominal package fill subfield status value is 1 and the nominal package fill value is 16 μs; or the nominal package fill subfield status value is 2 and the nominal package fill value is 20 gs.

[00115] It should be noted that, in comparison with Table 2, an example where the level of the second nominal package fill value is one level higher than that of the first nominal package fill value is used in Table 8. A relationship between the second nominal package fill value and the first nominal package fill value is not limited in this embodiment of this application. For example, the second nominal package fill value may be a sum of the first nominal package fill value and a fixed value.

[00116] It should be noted that the mapping relationship between the nominal packet fill subfield status value and the nominal packet fill value in the previous example is merely an example. A specific mapping relationship between the nominal packet fill subfield status value and the nominal packet fill value is not limited in this embodiment of this application. For example, the nominal packet fill subfield status value is a first status value, and the nominal packet fill value is a first microsecond. Specific values ​​of the first status value and the first microsecond are not limited in this embodiment of this application. For example, the first status value is 2 or another possible value, and the first microsecond can be 24 gs, 28 μs, or similar.

[00117] Case 2: When the first device offers support Petition 870250091376, dated 07 / 10 / 2025, p. 71 / 171 59 / 102 When sending the PPDU to the first device using at least two modulation schemes, the nominal packet padding value used by the second device is related to a higher-order modulation scheme (e.g., called the first modulation scheme) in at least two modulation schemes by default. For example, the nominal packet padding value used by the second device is related to one or more of the following: the first modulation scheme, a frequency domain feature size corresponding to the first modulation scheme, an NSS / NSTS corresponding to the first modulation scheme, or similar. The frequency domain feature corresponding to the first modulation scheme can be a RU or an MRU. The frequency domain feature corresponding to the first modulation scheme can be understood as using the first modulation scheme in the frequency domain feature.

[00118] In Case 2, the nominal packet padding subfield design whose status value is 3em can be used. 802.11be. For example, when the nominal packet padding subfield status value is 3, a constellation index corresponding to the first modulation scheme is less than or equal to a constellation index threshold, and one or more of the following conditions are met, the nominal packet padding value is 16 μs; otherwise, the nominal packet padding value is 20 μs: (1) the allocation size of a RU / MRU is less than or equal to a size threshold; (2) the size of a RU / MRU corresponding to the first modulation scheme is less than or equal to a size threshold; or (3) an NSS is less than or equal to an NSS threshold.

[00119] The constellation index threshold, size threshold, and NSS threshold can be predefined or (pre)configured. For example, the constellation index threshold of Petition 870250091376, dated 07 / 10 / 2025, page 72 / 171 The 60 / 102 constellation could be 1024-QAM, the size threshold could be 2*996 tones, and the NSS threshold could be 8 or 16.

[00120] To facilitate understanding, the following uses a specific example to describe how the nominal package fill subfield indicates the nominal package fill value. Note that in the following example, the status value of the nominal package fill value is 3. In some embodiments, the status value of the nominal package fill value may alternatively be another value.

[00121] Example 1: It can be specified that when the nominal packet padding subfield status value is 3, the constellation index corresponding to the first modulation scheme in at least the two modulation schemes configured for the second device is less than or equal to the constellation index threshold, and the RU / MRU allocation size is less than or equal to the size threshold, the nominal packet padding value will be 16 μs; otherwise, the nominal packet padding value will be 20 ps.

[00122] Example 2: It can be specified that when the nominal packet filling subfield status value is 3, the constellation index corresponding to the first modulation scheme in at least the two modulation schemes configured for the second device is less than or equal to the constellation index threshold, the configured NSS is less than or equal to the NSS threshold, and the RU / MRU allocation size is less than or equal to the size threshold, the nominal packet filling value is 16 ps; otherwise, the nominal packet filling value is 20 ps.

[00123] Example 3: It can be specified that when the nominal packet completion subfield status value is 3, the constellation index corresponding to the first modulation scheme in at least the two configured modulation schemes Petition 870250091376, dated 07 / 10 / 2025, page 73 / 171 If 61 / 102 for the second device is less than or equal to the constellation index threshold, and the RU / MRU size corresponding to the first modulation scheme is less than or equal to the size threshold, the nominal packet padding value will be 16 μs; otherwise, the nominal packet padding value will be 20 μs.

[00124] Example 4: It can be specified that when the nominal packet padding subfield status value is 3, the constellation index corresponding to the first modulation scheme in at least the two modulation schemes configured for the second device is less than or equal to the constellation index threshold, the configured NSS is less than or equal to the NSS threshold, and the RU / MRU size corresponding to the first modulation scheme is less than or equal to the size threshold, the nominal packet padding value is 16 μs; otherwise, the nominal packet padding value is 20 gs.

[00125] In the previous examples 1 to 4, the constellation index thresholds in different examples may be the same or they may be different; the size thresholds in different examples may be the same or they may be different; and the NSS thresholds in different examples may be the same or they may be different.

[00126] The second device may use different modulation schemes in different spatial streams or use different modulation schemes in different sets of subcarriers. It can be understood that the second device sends the PPDU using at least two modulation schemes (e.g., modulation scheme 1 and modulation scheme 2), and the PPDU includes both content modulated using modulation scheme 1 and content modulated using modulation scheme 2. In this case, a higher nominal packet filling value is preferable. Consequently, the constellation index threshold should correspond to the higher nominal packet filling value. Petition 870250091376, dated 07 / 10 / 2025, page 74 / 171 62 / 102 the RU allocation index must match the highest nominal package fill value or the NSS must match the highest nominal package fill value. Alternatively, in this case, one or more of the following must be selected: a lower constellation index threshold, a PPET corresponding to a higher RU allocation index, or PPETs corresponding to more NSSs.

[00127] For example, when the second device sends the PPDU to the first device using a modulation scheme, as shown in Table 7, if the nominal packet padding subfield status value is 3, a constellation index corresponding to the modulation scheme used by the second device will be less than or equal to 5 (i.e., a constellation index threshold) and the RU allocation size will be less than or equal to 2x996 tones (i.e., a size threshold), the nominal packet padding value is 16 μs; otherwise, the nominal packet padding value is 20 ps. However, in this embodiment of this application, when the second device sends the PPDU to the first device using at least two modulation schemes, the constellation index threshold may be less than 5. For example, the constellation index threshold is equal to 4.Similarly, the RU / MRU size threshold can be less than 2x996 tons (the corresponding RU allocation index is 3). For example, the RU / MRU size threshold can be 484 tons, meaning the RU allocation index is equal to 2.

[00128] Alternatively, although the processing complexity increases due to the second device using at least two modulation schemes, a low-order modulation scheme is used in some spatial streams, and a high-order modulation scheme is used in the other spatial streams; or a low-order modulation scheme is used in some subcarrier sets, and a high-order modulation scheme is used in others. Petition 870250091376, dated 07 / 10 / 2025, page 75 / 171 The 63 / 102 order is used in the other subcarrier sets. Compared to a case where the second device uses a high-order modulation scheme in all spatial streams or in all subcarrier sets, the second device processes fewer bits per unit of time when using at least two modulation schemes, and therefore the first device can more quickly complete receiving the PPDU sent by the second device. In this case, a lower nominal packet padding value is preferable. Consequently, the constellation index threshold should match the lowest nominal packet padding value, the RU allocation index should match the lowest nominal packet padding value, or the NSS should match the lowest nominal packet padding value.Alternatively, in this case, one or more of the following should be selected: a higher constellation index threshold, a PPET corresponding to a lower RU allocation index, or PPETs corresponding to fewer NSSs.

[00129] For example, when the second device sends the PPDU to the first device using a modulation scheme, as shown in Table 7, if the nominal packet padding subfield status value is 3, the constellation index corresponding to the modulation scheme is less than or equal to 5 (i.e., the constellation index threshold), and the RU allocation size is less than or equal to 2*996 tones (i.e., the size threshold), the nominal packet padding value will be 16 μs; otherwise, the nominal packet padding value will be 20 μs. However, in this embodiment of this application, when the second device sends the PPDU to the first device using at least two modulation schemes, the constellation index threshold may be greater than 5. For example, the constellation index threshold is equal to 6. Similarly, the RU / MRU size threshold may be greater than 2x996 tones.For example, the RU / MRU size threshold could be 4x996 tones, that is, the index. Petition 870250091376, dated 07 / 10 / 2025, page 76 / 171 64 / 102 of RU allocation equals 4.

[00130] Case 3: When the first device supports the second device in sending the PPDU to the first device using at least two modulation schemes, the nominal packet padding value used by the second device may be 20 μs by default.

[00131] In this case, a nominal packet fill subfield status value corresponding to the nominal packet fill value of 20 μs can be set, for example, the status value is 2. When the nominal packet fill subfield status value is 2, the second device can determine that the nominal packet fill value indicated by the first device is 20 μs.

[00132] Alternatively, the meaning of status value 3 of the nominal packet padding subfield is still used. In other words, when an order of the modulation scheme supported by the second device is less than 1024, and the RU / MRU allocation size is less than or equal to 2x996 tones, the nominal packet padding value is 16 μs; otherwise, the nominal packet padding value is 20 μs. Otherwise, the nominal packet padding value is 20 μs includes a case where the second device sends the PPDU to the first device using at least two MCSs.In other words, if the second device sends the PPDU to the first device using at least two modulation schemes, the value of the physical layer packet extension threshold presence subfield included in the PPDU sent by the first device to the second device will be 0, and the status value of the nominal packet padding subfield will be 3, the nominal packet padding value indicated by the nominal packet padding subfield will be 20 μs.

[00133] S1202: The second device determines the nominal packet padding value based on a domain resource. Petition 870250091376, dated 07 / 10 / 2025, page 77 / 171 65 / 102 frequency configured and spatial flow and in at least two modulation schemes used.

[00134] Resources, for example, the frequency resource and spatial flow, used to send the PPDU to the first device can be configured for the second device. The frequency domain resource can be used to allocate a RU / MRU to the second device. Information about the frequency domain resource and information about the spatial flow can be carried in the same configuration information and sent together to the second device, or they can be sent separately to the second device.

[00135] The second device can determine the nominal packet padding value based on the configured frequency domain feature and spatial stream and the at least two modulation schemes used. For example, when sending the PPDU to the first device using at least two modulation schemes, the second device can determine a corresponding nominal packet padding value or a default nominal packet padding value based on the status value indicated by the nominal packet padding subfield in the capacity information.

[00136] For example, the meaning of the nominal packet padding subfield is the same as in Case 1. In this case, provided the second device uses at least two modulation schemes, when the status value of the nominal packet padding subfield is 0, the second device will determine that the nominal packet padding value is 8 μs; when the status value of the nominal packet padding subfield is 1, the second device will determine that the nominal packet padding value is 16 μs; or when the status value of the nominal packet padding subfield is 2, the second device will determine that the nominal packet padding value is 20 μs. Petition 870250091376, dated 07 / 10 / 2025, pp. 78 / 171 66 / 102

[00137] If a meaning of the nominal packet padding subfield is the same as in Case 2, when the status value of the nominal packet padding subfield is 3, the constellation index corresponding to the first modulation scheme in at least the two modulation schemes used by the second device is less than or equal to the constellation index threshold, and the RU / MRU allocation size is less than or equal to the size threshold, the nominal packet padding value will be 16 μs; otherwise, the nominal packet padding value will be 20 μs;or when the nominal packet filling subfield status value is 3, the constellation index corresponding to the first modulation scheme in at least the two modulation schemes used by the second device is less than or equal to the constellation index threshold, the configured NSS is less than or equal to the NSS threshold, and the RU / MRU allocation size is less than or equal to the size threshold, the nominal packet filling value will be 16 μs; otherwise, the nominal packet filling value will be 20 μs; or when the nominal packet filling subfield status value is 3, the constellation index corresponding to the first modulation scheme in at least the two modulation schemes used by the second device is less than or equal to the constellation index threshold, and the RU / MRU size corresponding to the first modulation scheme is less than or equal to the size threshold, the nominal packet filling value will be 16 μs;Otherwise, the nominal packet padding value will be 20 μs; or when the status value of the nominal packet padding subfield is 3, the constellation index corresponding to the first modulation scheme in at least the two modulation schemes used by the second device is less than or equal to the constellation index threshold, the configured NSS is less than or equal to the NSS threshold, and the RU / MRU size corresponding to the first scheme is; Petition 870250091376, dated 07 / 10 / 2025, pp. 79 / 171 If the 67 / 102 modulation is less than or equal to the size threshold, the nominal packet padding value will be 16 μs; otherwise, the nominal packet padding value will be 20 ps.

[00138] If the meaning of the nominal packet padding subfield is the same as in Case 3, when the status value of the nominal packet padding subfield is 3, the nominal packet padding value will be 20 ps, ​​provided that the second device uses at least two modulation schemes.

[00139] S1203: The second device determines, based on the nominal packet fill value, the duration of a PE field included in the PPDU sent to the first device.

[00140] After determining the nominal packet padding value, the second device determines, based on the nominal packet padding value, the duration of the PE field included in the PPDU sent to the first device. The duration of the PE field allows the first device sufficient time to analyze the PPDU received from the second device. To determine, by the second device, the duration of the PE field based on the nominal packet padding value, refer to the related content in Table 1 and FIG. 3. Details are not described again in this document.

[00141] Method 1200 shows the solution in which the first device indicates the nominal packet padding value based on the nominal packet padding subfield for all NSSs and all RU allocations that the first device supports, and for the first device supporting the second device in the use of at least two modulation schemes in the configured frequency domain feature or configured spatial stream. According to method 1200, when the second device sends the PPDU to the first device using at least two modulation schemes, the duration of the PE field included in the PPDU is determined, to allow the first device sufficient time to analyze the PPDU. Petition 870250091376, dated 07 / 10 / 2025, page 80 / 171 68 / 102 received from the second device.

[00142] It can be understood that the nominal packet padding subfield can also indicate a nominal packet padding value corresponding to all NSSs, all RU allocations, and a modulation scheme supported by the first device. In one possible implementation, to reduce overhead, the number of bits occupied by the nominal packet padding subfield does not need to be increased. In this case, the second device can determine a meaning of the nominal packet padding subfield based on one or at least two modulation schemes used to send the PPDU to the first device. Alternatively, the excess bit information can indicate that a meaning of the nominal packet padding subfield corresponds to one or at least two modulation schemes.

[00143] As described above, alternatively, the first device may indirectly indicate the nominal packet padding value based on the physical layer packet extension threshold presence subfield and the physical layer packet extension threshold field. Details are described below.

[00144] FIG. 13 shows a second method of capacity indication in a wireless local area network according to an embodiment of this application. A 1300 method shown in FIG. 13 is applicable to the scenario shown in FIG. 1. For example, a first device could be station 1 in FIG. 1, and a second device could be the AP in FIG. 1. In the 1300 method, the first device indirectly indicates, based on a physical layer packet extension threshold presence subfield and a physical layer packet extension threshold field, a nominal packet padding value that needs to be used by the second device to send a PPDU to the first device using at least Petition 870250091376, dated 07 / 10 / 2025, page 81 / 171 69 / 102 two MCSs. The 1300 method includes the following steps.

[00145] S1301: The first device sends capacity information to the second device, and correspondingly, the second device receives the capacity information, where the capacity information includes the physical layer packet extension thresholds field, the physical layer packet extension thresholds field includes a bit mask subfield with index RU, an NSS subfield, and a physical layer packet extension thresholds information field, and the physical layer packet extension thresholds information field includes a plurality of sets of packet extension thresholds subfields corresponding to different nominal packet padding values.

[00146] Optionally, capacity information also includes the physical layer packet extension threshold presence subfield. When a value in the physical layer packet extension threshold presence subfield is 1, the physical layer packet extension threshold information field includes a plurality of packet extension threshold subfield sets corresponding to different nominal packet fill values. Alternatively, when the physical layer packet extension threshold information field includes a plurality of packet extension threshold subfield sets corresponding to different nominal packet fill values, a value in the physical layer packet extension threshold presence subfield is 1.

[00147] Capacity information can be included in a physical layer data packet, for example, the PPDU, sent by the first device to the second device. For example, capacity information can be carried in a physical layer capacity information field. For more details, see the related content in FIG. 7, FIG. 8, FIG. Petition 870250091376, dated 07 / 10 / 2025, page 82 / 171 70 / 102 Figures 9 and 10 are not described in detail in this document.

[00148] In some embodiments, a physical layer packet extension threshold field design may be the same as the physical layer packet extension threshold field design in 802.11be. For example, the physical layer packet extension threshold field includes the RU index bitmask subfield, the NSS subfield, and the physical layer packet extension threshold information field, and the physical layer packet extension threshold information field includes the plurality of packet extension threshold subfield sets corresponding to different nominal packet padding values.For example, the physical layer packet extension threshold information field includes a first set of packet extension threshold subfields corresponding to a first nominal packet padding value and a second set of packet extension threshold subfields corresponding to a second nominal packet padding value. Optionally, the first nominal packet padding value can be 8 gs, and the second nominal packet padding value can be 16 μs or 20 με. In this case, the first set of packet extension threshold subfields can be PPET8 NSTSn RUb subfields, and the second set of packet extension threshold subfields can be PPETmax NSTSn RUb subfields. In other words, the physical layer packet extension threshold information field includes the PPET8 NSTSn RUb subfields and the PPETmax NSTSn RUb subfields. For more details, see the related content in FIG. 10.Details are not described again in this document.

[00149] In method 1300, each set of packet extension threshold subfields indicates a modulation threshold corresponding to an NSS where ne is a RU / MRU corresponding to a sequence number b, and the modulation threshold is used by the second Petition 870250091376, dated 07 / 10 / 2025, page 83 / 171 71 / 102 device to determine the nominal packet padding value used to send the physical layer data packet to the first device. The nominal packet padding value is for the first device that supports the second device in the use of at least two modulation schemes when the configured NSS is nea RU / MRU. It corresponds to the sequence number b. A range of values ​​for n is a subset of [N1,..., N2], where both N1 and N2 are integers greater than or equal to 1; a range of values ​​for b is a subset of [M1,..., M2], where both M1 and M2 are integers greater than or equal to 0.

[00150] When the first device supports the second device in the use of at least two modulation schemes, one or more of the following may be specified: a ratio between an NSS corresponding to the modulation threshold indicated by each set of packet extension threshold subfields and an NSS configured for the second device, a ratio between a RU / MRU corresponding to the modulation threshold indicated by each set of packet extension threshold subfields and a RU / MRU configured for the second device, or a result of the comparison between the modulation threshold indicated by each set of packet extension threshold subfields and a constellation index, such that the second device determines, based on the plurality of sets of packet extension threshold subfields corresponding to a plurality of nominal packet padding values, the nominal packet padding value indicated by the first device.

[00151] To facilitate understanding, specific examples are used below for description.

[00152] Example 1: When the second device is configured to use at least two modulation schemes, the nominal packet padding value is determined by default with Petition 870250091376, dated 07 / 10 / 2025, page 84 / 171 72 / 102 based on the result of comparing a constellation index corresponding to a second modulation scheme and the modulation threshold indicated by each set of packet extension threshold subfields. The constellation index of the second modulation scheme may be a sum of a constellation index corresponding to a higher-order modulation scheme (e.g., termed the first modulation scheme) in at least two modulation schemes and a first value. For example, the second device may determine the nominal packet filling value based on a comparison result between the constellation index corresponding to the second modulation scheme and a modulation threshold indicated by the PPET8 NSTSn RUb subfields, and a comparison result between the constellation index corresponding to the second modulation scheme and a modulation threshold indicated by the PPETmax NSTSn RUb subfields.For details, see the related content in Table 5 or Table 7.

[00153] To facilitate understanding, FIG. 14 shows a principle for determining a nominal packet filling value. A point in FIG. 14 corresponds to an NSS and corresponds to a RU / MRU. The first modulation scheme is the highest-order modulation scheme in the at least two modulation schemes configured for the second device. The constellation index corresponding to the second modulation scheme is the sum of the constellation index corresponding to the first modulation scheme and the first value. Furthermore, if the first value is a positive number, a point in the second row and third column in FIG.14 is used as an example, the constellation index corresponding to the first modulation scheme is greater than A1 and less than A2, and the nominal packet filling value is determined based on the result of the comparison between the constellation index corresponding to the first modulation scheme and A1 and between the constellation index corresponding to the first. Petition 870250091376, dated 07 / 10 / 2025, page 85 / 171 73 / 102 modulation scheme and A2, the nominal packet filling value is 8 ps. However, in this embodiment of this application, the nominal packet filling value is determined based on the result of the comparison between the constellation index corresponding to the second modulation scheme and A1 and between the constellation index corresponding to the second modulation scheme and A2. In this case, the constellation index corresponding to the second modulation scheme is greater than A1 and greater than A2 and, correspondingly, the nominal packet filling value is 16 μs or 20 ps.

[00154] It can be understood that the first value is not equal to 0, and a specific value of the first value is not limited in this embodiment of this request. As described above, the second device sends the PPDU to the first device using at least two modulation schemes, which increases the processing complexity. In this case, a constellation index threshold corresponding to a higher nominal packet padding value can be selected. In other words, the first value is a negative number. For example, the first value can be 1, -2, or -3. The second device sends the PPDU to the first device using at least two modulation schemes. In this case, the number of bits processed per unit of time is reduced, so that the first device can receive the PPDU from the second device more quickly. In this case, a constellation index threshold corresponding to a lower nominal packet padding value can be selected.In other words, the first value is a positive number. For example, the first value could be 1, 2, or 3.

[00155] Example 2: In a set of packet extension threshold subfields, a modulation threshold corresponding to an NSS being ne a RU / MRU corresponding to a sequential number b is a modulation threshold corresponding to an NSS being ne a RU / MRU corresponding to a sequential number b', b' is a sum Petition 870250091376, dated 07 / 10 / 2025, p. 86 / 171 74 / 102 of a second value, and the second value is not equal to 0.

[00156] Correspondingly, when the NSS configured for the second device is n, the sequence number corresponding to the RU / MRU is b, and the PPDU is sent to the first device using at least two modulation schemes, the second device can determine the nominal packet filling value based on a comparison result between a constellation index corresponding to a modulation scheme (e.g., called the second modulation scheme) in at least two modulation schemes and the modulation threshold corresponding to the NSS being n and the RU / MRU corresponding to sequence number b'. The example in Table 7 is still used.The second device can determine the nominal packet filling value based on the result of the comparison between the constellation index corresponding to the second modulation scheme and the modulation threshold indicated by the PPET8 NSTSn RUb subfields, and the result of the comparison between the constellation index corresponding to the second modulation scheme and the modulation threshold indicated by the PPETmax NSTSn RUb subfields. The modulation threshold indicated by the PPET8 NSTSn RUb subfields is the modulation threshold corresponding to NSS, with neo RU corresponding to sequence number b'. The modulation threshold indicated by the PPETmax NSTSn RUb subfields is the modulation threshold corresponding to NSS, with neo RU corresponding to sequence number b'. For details, see the related content in Table 5 or Table 7. Details are not described again in this document.

[00157] To facilitate understanding, FIG. 15 shows a principle for determining a nominal packet fill value. A point in FIG. 15 corresponds to an NSS and corresponds to a RU / MRU. An initial sequential number of an RU in a horizontal coordinate shown in FIG. 15 can start from 0 or it can start from 1. For example, an initial sequential number of an RU in a horizontal coordinate shown in FIG. 15 starts Petition 870250091376, dated 07 / 10 / 2025, page 87 / 171 75 / 102 in 0, and a point in the second row and second column is used as an example. A RU 1 is a RU configured by the second device, and a sequence number of RU 1 is 1. If the second value is 1, the second device can determine the nominal packet filling value based on a modulation threshold corresponding to an NSS being ne a RU corresponding to a sequence number 2. As shown in FIG. 15, if the second device determines the nominal packet filling value based on the result of the comparison between the constellation index corresponding to the second modulation scheme and the modulation threshold indicated by the PPET8 NSTSn RUb subfields, and the result of the comparison between the constellation index corresponding to the second modulation scheme and the modulation threshold indicated by the PPETmax NSTSn RUb subfields, the determined nominal packet filling value will be 8 ps.However, in this modality of this request, based on example 2, the second device determines the nominal packet filling value based on the result of the comparison between the constellation index corresponding to the second modulation scheme and the modulation threshold indicated by the PPET8 NSTSn RUb' subfields, and the result of the comparison between the constellation index corresponding to the second modulation scheme and the modulation threshold indicated by the PPETmax NSTSn RUb' subfields, the constellation index corresponding to the second modulation scheme is greater than A1 and greater than A2, and correspondingly, the nominal packet filling value is 16 μs or 20 ps.

[00158] It should be noted that the second modulation scheme in example 2 may be a higher-order modulation scheme in at least the two modulation schemes, or it may be a lower-order modulation scheme in at least the two modulation schemes. Similar to the first value, a specific value of the second value is not limited in this embodiment of this order. For example, the second value may be a positive number, for Petition 870250091376, dated 07 / 10 / 2025, page 88 / 171 76 / 102 example, 1, 2 or 3. Alternatively, the second value can be a negative number, for example, -1, -2 or -3.

[00159] Example 3: In a set of packet extension threshold subfields, a modulation threshold corresponding to an NSS being n' and a RU / MRU corresponding to a sequence number b is a modulation threshold corresponding to an NSS being n' and a RU / MRU corresponding to the sequence number b, n' is a sum of n and a third value, and the third value is not equal to 0.

[00160] Correspondingly, when the NSS configured for the second device is n, the sequence number corresponding to the RU / MRU is b, and the PPDU is sent to the first device using at least two modulation schemes, the second device can determine the nominal packet filling value based on the result of the comparison between a constellation index corresponding to a modulation scheme (e.g., called the second modulation scheme) in at least two modulation schemes and the modulation threshold corresponding to the NSS being n' and the RU / MRU corresponding to sequence number b. The example in Table 7 is still used.The second device can determine the nominal packet filling value based on the result of the comparison between the constellation index corresponding to the second modulation scheme and the modulation threshold indicated by the PPET8 NSTSn RUb subfields, and the result of the comparison between the constellation index corresponding to the second modulation scheme and the modulation threshold indicated by the PPETmax NSTSn RUb subfields. The modulation threshold indicated by the PPET8 NSTSn RUb subfields is the modulation threshold corresponding to NSS being n' and RU corresponding to the sequence number b. The modulation threshold indicated by the PPETmax NSTSn RUb subfields is the modulation threshold corresponding to NSS being neo RU corresponding to the sequence number b. For more details, see the related content in Table 5 or Table 7. Petition 870250091376, dated 07 / 10 / 2025, page 89 / 171 77 / 102

[00161] To facilitate understanding, FIG. 16 shows a principle for determining a nominal packet filling value. A point in FIG. 16 corresponds to an NSS and corresponds to a RU / MRU. An initial sequential number of an RU in a horizontal coordinate shown in FIG. 16 can start from 0 or it can start from 1. For example, an initial sequential number of an RU in a horizontal coordinate shown in FIG. 16 starts at 0, and a point in the second row and second column is used as an example. An RU 1 is an RU configured by the second device, the sequential number of RU 1 is 1, and an NSS configured for the second device is a number of flows indicated by the second row, for example, n. If the sum of the third neo value is n', the second device can determine the nominal packet filling value based on a modulation threshold corresponding to an NSS being n' and a RU corresponding to a sequence number 1. As shown in FIG.16. If the second device determines the nominal packet filling value based on the result of the comparison between the constellation index corresponding to the second modulation scheme and the modulation threshold indicated by the PPET8 NSTSn RUb subfields, and the result of the comparison between the constellation index corresponding to the second modulation scheme and the modulation threshold indicated by the PPETmax NSTSn RUb subfields, the determined nominal packet filling value will be 8 ps.However, in this modality of this request, based on example 3, the second device determines the nominal packet filling value based on the result of the comparison between the constellation index corresponding to the second modulation scheme and the modulation threshold indicated by the PPET8 NSTSn' RUb subfields, and the result of the comparison between the constellation index corresponding to the second modulation scheme and the modulation threshold indicated by the PPETmax NSTSn' RUb subfields, the constellation index corresponding to. Petition 870250091376, dated 07 / 10 / 2025, page 90 / 171 78 / 102 according to the modulation scheme is greater than A1 and greater than A2, and correspondingly, the nominal packet filling value is 16 μs or 20 μs.

[00162] It should be noted that the second modulation scheme in example 3 may be a higher-order modulation scheme in at least the two modulation schemes, or it may be a lower-order modulation scheme in at least the two modulation schemes. Similar to the first value, a specific value of the third value is not limited in this embodiment of this order. For example, the third value may be a positive number, for example, 1, 2, or 3. Alternatively, the third value may be a negative number, for example, -1, -2, or -3.

[00163] Example 4: When the second device uses at least two modulation schemes, the nominal packet padding value corresponding to the PPETmax NSTSn RUb subfields is greater than or equal to 20 μs by default.

[00164] A plurality of examples from example 1 to example 4 can be combined with each other. For example, example 2 is combined with example 3. In a set of packet extension threshold subfields, a modulation threshold corresponding to an NSS being n' and a RU / MRU corresponding to a sequence number b is a modulation threshold corresponding to an NSS being n' and a RU / MRU corresponding to the sequence number b', b' is a sum of be and the second value, and n' is a sum of neo and the third value.

[00165] S1302: The second device determines the nominal packet padding value based on the physical layer packet extension threshold information field, a configured frequency domain and spatial stream feature, and the at least two modulation schemes used.

[00166] The second device can compare, based on the configured frequency domain feature and spatial flow and a constellation index corresponding to at least one of the Petition 870250091376, dated 07 / 10 / 2025, page 91 / 171 79 / 102 Two modulation schemes are used, the modulation thresholds are indicated by the plurality of packet extension threshold subfields included in the physical layer packet extension threshold information field, and determine the corresponding nominal packet padding value based on a comparison result. For a specific way to determine the nominal packet padding value by the second device, see the related content in Example 1 to Example 4 in S1301. Details are not described again in this document.

[00167] S1303: The second device determines, based on the nominal packet fill value, the duration of a PE field included in the PPDU sent to the first device.

[00168] After determining the nominal packet padding value, the second device determines, based on the nominal packet padding value, the duration of the PE field included in the PPDU sent to the first device. The duration of the PE field allows the first device sufficient time to analyze the PPDU received from the second device. To determine, by the second device, the duration of the PE field based on the nominal packet padding value, refer to the related content in Table 1 and FIG. 3. Details are not described again in this document.

[00169] Method 1300 shows that the design of the physical layer packet extension threshold field in 802.11be is still used to indicate the nominal packet padding value that needs to be used when the second device sends the PPDU to the first device using at least two modulation schemes. According to method 1300, when the second device sends the PPDU to the first device using at least two modulation schemes, the duration of the PE field included in the PPDU is determined, to allow the first device sufficient time to analyze the received PPDU. Petition 870250091376, dated 07 / 10 / 2025, page 92 / 171 80 / 102 of the second device.

[00170] It can be understood that the physical layer packet extension threshold field in method 1300 can also indicate a corresponding nominal packet padding value used when the first device supports a modulation scheme. In one possible implementation, to reduce overhead, the number of bits occupied by the physical layer packet extension threshold field need not be increased. In this case, the second device can determine a meaning of the physical layer packet extension threshold field based on one or at least two modulation schemes that are used. Alternatively, excess bit information can indicate that a meaning of the physical layer packet extension threshold field corresponds to one or at least two modulation schemes.

[00171] In a solution that can replace the 1300 method, a corresponding modulation threshold can be indicated for each spatial stream. In this case, the second device can determine, based on the modulation thresholds corresponding to all spatial streams, a nominal packet filling value that needs to be used. Correspondingly, FIG. 17 shows a third solution according to an embodiment of this application.

[00172] A 1700 method shown in FIG. 17 is applicable to the scenario shown in FIG. 1. For example, a first device could be station 1 in FIG. 1, and a second device could be the AP in FIG. 1. In the 1700 method, the first device indicates, based on a physical layer packet extension threshold presence subfield and a physical layer packet extension threshold field in a PPDU, a nominal packet padding value that needs to be used by the second device to send the PPDU to the first device using at least two modulation schemes. In the 1700 method, each set of Petition 870250091376, dated 07 / 10 / 2025, page 93 / 171 81 / 102 Packet Extension Threshold subfields can be extended based on a number of spatial streams. For example, each set of Packet Extension Threshold subfields includes a plurality of subfields, and a subfield might indicate a modulation threshold corresponding to one of n spacetime streams when an NSS is n and a RU corresponds to a sequence number b. For example, a set of Packet Extension Threshold subfields includes a first subfield and a second subfield. The first subfield might indicate a first modulation threshold corresponding to a first spacetime stream in the n spacetime streams when the NSS is n and the RU corresponds to the sequence number b, and the first modulation threshold is used by the second device to determine a corresponding nominal packet padding value used when sending the PPDU to the first device in the first spacetime stream using a first modulation scheme.Similarly, the second subfield may indicate a second modulation threshold corresponding to a second spacetime stream in the n spacetime streams when the NSS is n and the RU corresponds to the sequence number b, and the second modulation threshold is used by the second device to determine a corresponding nominal packet padding value used when sending the PPDU to the first device in the second spacetime stream using the second modulation scheme. A range of values ​​of n is a subset of [N1,..., N2], where both N1 and N2 are integers greater than or equal to 1; a range of values ​​of b is a subset of [M1,..., M2], where both M1 and M2 are integers greater than or equal to 0.

[00173] The PPETmax NSSn RUb subfields are used as an example. When an NSS supported by the first device is 4, a structure of the PPETmax NSSn RUb subfields can be shown in FIG. 18. PPETmax NSS4 RUb SS=i in FIG. 18 is a subfield, where i=1, 2, 3 or 4. When the NSS supported by the first device Petition 870250091376, dated 07 / 10 / 2025, p. 94 / 171 82 / 102 is 5, a structure of the PPETmax NSSn RUb subfields can be shown in FIG. 19. PPETmax NSS4 RUb SS=i in FIG. 19 is a subfield, where i=1, 2, 3, 4 or 5.

[00174] Correspondingly, method 1700 includes the following steps.

[00175] S1701: The first device sends capacity information to the second device, and correspondingly, the second device receives the capacity information, where the capacity information includes the physical layer packet extension thresholds field, the physical layer packet extension thresholds field includes a bit mask subfield with index RU, an NSS subfield, and a physical layer packet extension thresholds information field, and the physical layer packet extension thresholds information field includes a plurality of sets of packet extension thresholds subfields corresponding to different nominal packet padding values.Each set of packet extension threshold subfields includes the first subfield, the first subfield may indicate the first modulation threshold corresponding to the first spacetime stream in the n spacetime streams when the NSS is nea RU corresponding to the sequence number b, and the first modulation threshold is used by the second device to determine the corresponding nominal packet padding value used when sending the PPDU to the first device in the first spacetime stream using the first modulation scheme.

[00176] Each set of packet extension threshold subfields further includes a second subfield which may indicate the second modulation threshold corresponding to the second spacetime stream in the n spacetime streams when the NSS is nea RU corresponding to sequence number b, and the second modulation threshold is used by the second device to determine the corresponding nominal packet padding value used to Petition 870250091376, dated 07 / 10 / 2025, page 95 / 171 83 / 102 send the PPDU to the first device in the second spacetime stream using the second modulation scheme.

[00177] Capacity information can be included in a physical layer data packet, for example, the PPDU, sent from the first device to the second device. For example, capacity information can be carried in a physical layer capacity information field. For more details, see the related content in FIG. 7, FIG. 8, FIG. 9, and FIG. 10. Details are not described again in this document. Optionally, capacity information also includes the physical layer packet extension threshold presence subfield. When a value of the physical layer packet extension threshold presence subfield is 1, the physical layer packet extension threshold information field includes a plurality of packet extension threshold subfield sets corresponding to different nominal packet padding values.Alternatively, when the physical layer packet extension threshold information field includes a plurality of packet extension threshold subfield sets corresponding to different nominal packet padding values, a value of the physical layer packet extension threshold presence subfield is 1.

[00178] S1702: The second device determines the nominal packet padding value based on the physical layer packet extension threshold information field, a configured frequency domain and spatial stream feature, and the at least two modulation schemes used.

[00179] For any spacetime stream corresponding to the NSS being nea RU corresponding to sequence number b, a corresponding nominal packet fill value can be determined based on a constellation index corresponding to a modulation scheme used in each spacetime stream and Petition 870250091376, dated 07 / 10 / 2025, page 96 / 171 84 / 102 a modulation threshold corresponding to the spacetime stream. After determining the nominal packet filling values ​​corresponding respectively to n spacetime streams, the second device determines, based on the nominal packet filling values ​​corresponding respectively to n spacetime streams, the nominal packet filling value that needs to be used to send the PPDU to the first device. For example, the nominal packet filling value used by the second device is a maximum nominal packet filling value in the nominal packet filling values ​​used respectively in the spacetime streams n when the NSS is neo RU corresponding to sequence number b.

[00180] For a method of determining the nominal packet padding value corresponding to any spatiotemporal flow, see the contents of Table 5 or Table 7. Details are not described again in this document.

[00181] To facilitate understanding, FIG. 20 shows a principle for determining a nominal packet filling value. A point in FIG. 20 corresponds to a spatial stream number and corresponds to a RU / MRU. In FIG. 20, three spatial streams are used as an example. A RU configured for the second device is RU 1, and a sequential number corresponding to the RU is b. The second device sends the PPDU to the first device in a first spatial stream using the first modulation scheme, in a second spatial stream using the second modulation scheme, and in a third spatial stream using the first modulation scheme. As shown in FIG.20, the second device determines, based on the result of the comparison between a constellation index corresponding to the first modulation scheme and a modulation threshold indicated by the PPET8 NSTSn RUb subfields and between the constellation index corresponding to the first modulation scheme and a modulation threshold indicated by the subfields. Petition 870250091376, dated 07 / 10 / 2025, page 97 / 171 85 / 102 PPETmax NSTSn RUb, a nominal packet filling value corresponding to the first space stream and, correspondingly, the constellation index corresponding to the first modulation scheme is greater than A1 and less than A2. In this case, the nominal packet filling value is 8 ps. The second device determines, based on the result of the comparison between a constellation index corresponding to the second modulation scheme and the modulation threshold indicated by the PPET8 NSTSn RUb subfields, and between the constellation index corresponding to the second modulation scheme and the modulation threshold indicated by the PPETmax NSTSn RUb subfields, a nominal packet filling value corresponding to the second space stream and, correspondingly, the constellation index corresponding to the second modulation scheme is greater than A1 and less than A2. In this case, the nominal packet filling value is 8 ps.The second device determines, based on the result of the comparison between the constellation index corresponding to the first modulation scheme and the modulation threshold indicated by the PPET8 NSTSn RUb subfields, and between the constellation index corresponding to the first modulation scheme and the modulation threshold indicated by the PPETmax NSTSn RUb subfields, a nominal packet filling value corresponding to the third spatial stream and, correspondingly, the constellation index corresponding to a third modulation scheme is greater than A2. In this case, the nominal packet filling value is 16 ps or 20 ps. Finally, the second device can determine a maximum nominal packet filling value corresponding to the first spatial stream for the third spatial stream as a nominal packet filling value that needs to be used, i.e., 16 ps or 20 ps.

[00182] S1703: The second device determines, based on the nominal packet fill value, the duration of a PE field included in the PPDU sent to the first device.

[00183] After determining the package fill value Petition 870250091376, dated 07 / 10 / 2025, page 98 / 171 86 / 102 nominal, the second device determines, based on the nominal packet padding value, the duration of the PE field included in the PPDU sent to the first device. The duration of the PE field allows the first device sufficient time to analyze the PPDU received from the second device. To determine, by the second device, the duration of the PE field based on the nominal packet padding value, refer to the related content in Table 1 and FIG. 3. Details are not described again in this document.

[00184] In some embodiments, the first device supports the second device in the use of at least two modulation schemes in at least one RU / MRU. For example, an RU / MRU includes i sets of subcarriers, where i is greater than or equal to 2. The second device uses at least two modulation schemes in the i sets of subcarriers. In this case, for each set of subcarriers, a corresponding modulation threshold can be indicated separately, and the second device can determine, based on the modulation thresholds corresponding to all sets of subcarriers, a nominal packet padding value that needs to be used. Correspondingly, FIG. 21 shows a fourth solution according to an embodiment of this application.

[00185] A 2100 method shown in FIG. 21 is applicable to the scenario shown in FIG. 1. For example, a first device could be station 1 in FIG. 1, and a second device could be the AP in FIG. 1. In the 2100 method, the first device indirectly indicates, based on a physical layer packet extension threshold presence subfield and a physical layer packet extension threshold field in a PPDU, a nominal packet padding value that needs to be used by the second device to send a physical layer data packet to the first device using at least two modulation schemes. The 2100 method includes the following steps. Petition 870250091376, dated 07 / 10 / 2025, page 99 / 171 87 / 102

[00186] S2101: The first device sends capacity information to the second device, and correspondingly, the second device receives the capacity information, where the capacity information includes the physical layer packet extension thresholds field, the physical layer packet extension thresholds field includes a bit mask subfield with index RU, an NSS subfield, and a physical layer packet extension thresholds information field, and the physical layer packet extension thresholds information field includes a plurality of sets of packet extension thresholds subfields corresponding to different nominal packet padding values.Each set of packet extension threshold subfields includes a first subfield, the first subfield indicates a first modulation threshold corresponding to a first set of subcarriers in a frequency domain resource when an NSS is n a frequency domain resource corresponds to a sequence number b, and the first modulation threshold is used by the second device to determine the nominal packet padding value used when sending the PPDU to the first device in the first set of subcarriers using a first modulation scheme.

[00187] Optionally, capacity information also includes the physical layer packet extension threshold presence subfield. When a value in the physical layer packet extension threshold presence subfield is 1, the physical layer packet extension threshold information field includes a plurality of sets of packet extension threshold subfields corresponding to different nominal packet fill values. Alternatively, when the physical layer packet extension threshold information field includes a plurality of sets of packet extension threshold subfields corresponding to different nominal packet fill values, a value in the subfield Petition 870250091376, dated 07 / 10 / 2025, pp. 100 / 171 88 / 102 of the presence of physical layer packet extension thresholds is 1.

[00188] One difference between S2101 and S1701 lies in the fact that each set of packet extension threshold subfields can be extended based on sets of subcarriers. For example, each set of packet extension threshold subfields includes a plurality of subfields, and a subfield can indicate a modulation threshold corresponding to a set of subcarriers in a RU / MRU when the NSS is nea RU / MRU corresponds to a sequence number b. For example, a set of packet extension threshold subfields includes a first subfield and a second subfield.The first subfield may indicate a first modulation threshold corresponding to a first set of subcarriers in the RU / MRU when the NSS is nea. The RU / MRU corresponds to sequence number b, and the first modulation threshold is used by the second device to determine the corresponding nominal packet padding value used when sending the PPDU to the first device in the first set of subcarriers using the first modulation scheme. Similarly, the second subfield may indicate a second modulation threshold corresponding to a second set of subcarriers in the RU / MRU when the NSS is nea. The RU / MRU corresponds to sequence number b, and the second modulation threshold is used by the second device to determine a corresponding nominal packet padding value used when sending the PPDU to the first device in the second set of subcarriers using the second modulation scheme.

[00189] The PPETmax NSSn RUb subfields are used as an example. When the MRU used by the second device is 484+996, the MRU includes a RU A and a RU B. When 64QAM is used in RU A and 16QAM is used in RU B, a structure of the PPETmax NSSn RUb subfields can be shown in FIG. 22.

[00190] S2102: The second device determines the value of Petition 870250091376, dated 07 / 10 / 2025, pp. 101 / 171 89 / 102 nominal packet padding based on the physical layer packet extension threshold field, a configured frequency domain and spatial stream feature, and the at least two modulation schemes used.

[00191] A nominal packet padding value corresponding to a set of subcarriers can be determined based on a modulation threshold corresponding to a RU including the set of subcarriers. For a specific method of determination, see the contents of Table 5 or Table 7. Details are not described again in this document. In a possible implementation, a new RU allocation index could be introduced to indicate a RU including a set of subcarriers. Alternatively, a RU allocation index defined in Table 6 could be reused and indicate, along with an overhang bit, a RU including a set of subcarriers. The overhang bit could be used to distinguish whether the indicated RU is the RU in Table 6 or the RU including the set of subcarriers.

[00192] For i subcarrier sets included in the configured frequency domain feature, the second device can determine corresponding nominal packet filling values ​​based on constellation indices corresponding to modulation schemes used respectively in the i subcarrier sets, i.e., a modulation threshold corresponding to the spatiotemporal stream. After determining the corresponding nominal packet filling values ​​for the i subcarrier sets, the second device determines, based on the corresponding nominal packet filling values ​​for the i subcarrier sets, the nominal packet filling value that needs to be used to send the PPDU to the first device. For example, the nominal packet filling value used by the second device is a maximum nominal packet filling value within the nominal packet filling values. Petition 870250091376, dated 07 / 10 / 2025, p. 102 / 171 90 / 102 used respectively in the subcarrier sets i when the NSS is nea RU corresponds to the sequence number b.

[00193] To facilitate understanding, FIG. 23 shows a principle for determining a nominal packet filling value. A point in FIG. 23 corresponds to a spatial stream number and corresponds to a RU / MRU. In FIG. 23, an example is given where the RU configured for the second device is RU 1, the sequence number corresponding to the RU is b, and RU 1 includes three sets of subcarriers (i.e., subcarrier set 1 to subcarrier set 3).

[00194] The second device uses the first modulation scheme on subcarrier set 1, uses the first modulation scheme on subcarrier set 2, and uses the second modulation scheme on subcarrier set 3. As shown in FIG. 23, the second device determines, based on the result of the comparison between a constellation index corresponding to the first modulation scheme and a modulation threshold indicated by the PPET8 NSTSn RUb subfields, and between the constellation index corresponding to the first modulation scheme and a modulation threshold indicated by the PPET16 NSTSn RUb subfields, a nominal packet filling value corresponding to subcarrier set 1 and, correspondingly, the constellation index corresponding to the first modulation scheme is greater than A1 and less than A2. In this case, the nominal packet filling value is 8 με.The second device determines, based on the result of the comparison between a constellation index corresponding to the second modulation scheme and the modulation threshold indicated by the PPET8 NSTSn RUb subfields, and between the constellation index corresponding to the second modulation scheme and the modulation threshold indicated by the PPETmax NSTSn RUb subfields, a nominal packet filling value corresponding to the set of subcarriers 2 and, correspondingly, the constellation index. Petition 870250091376, dated 07 / 10 / 2025, pp. 103 / 171 The value 91 / 102 corresponding to the first modulation scheme is less than A1. In this case, the nominal packet filling value is 0 ps. The second device determines, based on the result of the comparison between the constellation index corresponding to the first modulation scheme and the modulation threshold indicated by the PPET8 NSTSn RUb subfields, and between the constellation index corresponding to the first modulation scheme and the modulation threshold indicated by the PPETmax NSTSn RUb subfields, a nominal packet filling value corresponding to the set of subcarriers 3, and, correspondingly, the constellation index corresponding to the first modulation scheme is greater than A2. In this case, the nominal packet filling value is 16 μs or 20 ps.Finally, the second device can determine a maximum nominal packet padding value corresponding to subcarrier set 1 for subcarrier set 3 as a nominal packet padding value that needs to be used, i.e., 16 ps or 20 ps.

[00195] S2103: The second device determines, based on the nominal packet fill value, the duration of a PE field included in the PPDU sent to the first device.

[00196] After determining the nominal packet padding value, the second device determines, based on the nominal packet padding value, the duration of the PE field included in the PPDU sent to the first device. The duration of the PE field allows the first device sufficient time to analyze the PPDU received from the second device. To determine, by the second device, the duration of the PE field based on the nominal packet padding value, refer to the related content in Table 1 and FIG. 3. Details are not described again in this document.

[00197] For a case where the first device supports the second device in sending the PPDU to the first device using a plurality of modulation schemes, the modes Petition 870250091376, dated 07 / 10 / 2025, pp. 104 / 171 Previous 92 / 102 methods provide four solutions in total: the 1200 method, the 1300 method, the 1700 method, and the 2100 method. Based on any of the four solutions, the first device can indicate to the second device the nominal packet padding value that the second device should use to send the PPDU to the first device using the plurality of modulation schemes. The second device determines, based on the indication from the first device, the nominal packet padding value that needs to be used to further determine the duration of the PE field included in the sent PPDU. The duration of the PE field allows the first device sufficient time to analyze the PPDU received from the second device.

[00198] In some embodiments of this application, system and network may be used interchangeably. A plurality of means two or more. In view of this, “a plurality of” may also be understood as “at least two” in embodiments of this application. At least one may be one or more, for example, at least one is one, two or more. For example, including at least one means that one, two or more are included, and there is no limitation as to which one or ones are included. For example, if at least one of A, B and C is included, then A, B, C, A and B, A and C, B and C, or A, B and C may be included. Similarly, interpretations of descriptions such as at least one are also similar. At least one of the following items (pieces) or a similar expression refers to any combination of these items, including any combination of singular items (pieces) or plural items (pieces). For example, at least one of A, B, and C includes A, B, C, AB, AC, BC, or ABC.The term "and / or" describes an association relationship to describe associated objects and represents the three possible relationships. For example, A and / or B can represent the following three cases: Only A exists, both A and B exist, and only B exists. Additionally, the character / is used unless otherwise specified. Petition 870250091376, dated 07 / 10 / 2025, pp. 105 / 171 93 / 102 form, generally indicates a relationship or between the associated objects.

[00199] Unless otherwise specified, ordinal numbers such as first and second mentioned in modalities of this application are used to distinguish a plurality of objects and are not used to limit a sequence, a time sequence, a priority, or a degree of importance of the plurality of objects. Furthermore, the descriptions of first and second do not mean that the objects are necessarily different. For example, the first modulation scheme and the second modulation scheme indicate that there are two modulation schemes and do not limit the priorities or importance of the two modulation schemes.

[00200] In the previous embodiments provided in this application, the methods provided in the embodiments of this application are described from a perspective of interaction between the first device and the second device. To implement functions in the previous methods provided in embodiments of this application, the first device and the second device may include a hardware structure and / or a software module and implement the previous functions in a form of the hardware structure, the software module, or a combination of the hardware structure and the software module. Whether a function in the previous functions is performed using the hardware structure, the software module, or a combination of the hardware structure and the software module depends on specific applications and design constraints of the technical solutions.

[00201] FIG. 24 is a block diagram of a 2400 communication device according to an embodiment of this application. The 2400 communication device may implement functions or steps implemented by the first device or the second device in the previous method embodiments. The 2400 communication device may include functional units configured to perform Petition 870250091376, dated 07 / 10 / 2025, pp. 106 / 171 94 / 102 the method performed by the first or second device in FIG. 12, FIG. 13, FIG. 17, or FIG. 21. For example, the communication device 2400 may include a processing module 2410 and a transceiver module 2420. Optionally, a storage unit may be included. The storage unit may be configured to store instructions (code or program) and / or data. The processing module 2410 and the transceiver module 2420 may be coupled to the storage unit. For example, the processing module 2410 may read the instructions (code or program) and / or data in the storage unit to implement a corresponding method. The preceding units may be independently arranged or may be partially or completely integrated.

[00202] The 2410 processing module may be a processor or a controller, for example, it may be a central processing unit (CPU), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic component, a transistor logic component, a hardware component, or any combination thereof. The processor may implement or execute various logic blocks, modules, and example circuits described with reference to the content disclosed in this application. Alternatively, the processor may be a combination of processors that implement a computing function, for example, a combination of one or more microprocessors, or a combination of a DSP and a microprocessor.The 2420 transceiver module is an interface circuit of the device and is configured to receive a signal from another device. For example, when the device is implemented in the form of a chip, the 2420 transceiver module is an input / output interface, a pin, a circuit. Petition 870250091376, dated 07 / 10 / 2025, page 107 / 171 95 / 102 interface or similar for exchanging a signal between the chip and another chip or device.

[00203] In a possible design, when the communication device 2400 implements the functions or steps implemented by the first device in the prior method embodiments, the communication device 2400 may be the first device in the prior method embodiments, or it may be a chip or a functional module configured to implement the functions of the first device in the prior method embodiments. The processing module 2410 is configured to perform an operation related to the processing of the first device in the prior method embodiments, for example, generating capacity information. The transceiver module 2420 is configured to perform operations related to the receiving and sending of the first device in the prior method embodiments, for example, S1201, S1301, S1701, or S2101.A specific process in which each functional module included in the 2400 communication device performs the corresponding steps described above is described in the previous method embodiments. Details are not described again in this document.

[00204] In a possible design, when the communication device 2400 implements the functions or steps implemented by the second device in the previous method embodiments, the communication device 2400 may be the second device in the previous method embodiments, or it may be a chip or a functional module configured to implement the functions of the second device in the previous method embodiments. The processing module 2410 is configured to perform operations related to the processing of the second device in the previous method embodiments, for example, S1202 and S1203, S1302 and S1303, S1702 and S1703, or S2102 and S2103. The transceiver module 2420 is configured to perform operations related to receiving and sending from the second device in the Petition 870250091376, dated 07 / 10 / 2025, pp. 108 / 171 96 / 102 previous method embodiments, for example, S1201, S1301, S1701 or S2101. A specific process in which each functional module included in the 2400 communication device performs the corresponding previous steps is described in the previous method embodiments. Details are not described again in this document.

[00205] FIG. 25 shows a 2500 communication device according to an embodiment of this application. The 2500 communication device may be an AP or a STA and may implement functions of the first device or the second device in the methods provided in the embodiments of this application. Alternatively, the 2500 communication device may be a device that can support the first device in implementing a corresponding function in the methods provided in embodiments of this application, or a device that can support the second device in implementing a corresponding function in the methods provided in embodiments of this application. The 2500 communication device may be a chip or a chip system. In this embodiment of this application, the chip system may include a chip, or it may include a chip and another discrete component.

[00206] The communication apparatus 2500 includes at least one processor 2520, configured to implement or support the communication apparatus 2500 in implementing functions of the first device or the second device in the methods provided in embodiments of this application, for example, determining previous capacity information or determining a nominal packet padding value. The communication apparatus 2500 may further include at least one memory 2530, configured to store program instructions and / or data. The memory 2530 is coupled to the processor 2520. The coupling in this embodiment of this application may be an indirect coupling or a communication connection between apparatus, units or modules in an electrical form, a form Petition 870250091376, dated 07 / 10 / 2025, pp. 109 / 171 97 / 102 mechanical or other form, and is used for exchanging information between devices, units, or modules. The 2520 processor can operate with the 2530 memory. The 2520 processor can execute program instructions and / or data stored in the 2530 memory, so that the 2500 communication device implements the corresponding method. At least one of the at least one memory can be located in the processor.

[00207] The 2500 communication apparatus may also include a 2510 transceiver, configured to communicate with another device via a transmission medium, so that a device used in the 2500 communication apparatus can communicate with the other device. For example, when the communication apparatus is an AP, the other device is a STA; or when the communication apparatus is a STA, the other device is an AP. The 2520 processor can send or receive data through the 2510 transceiver. The 2510 transceiver may be called a transceiver device, transceiver circuit, input / output interface, or similar, and is configured to implement a transceiver function of the 2500 communication apparatus by means of an antenna. The 2510 transceiver may also include a radio frequency unit. The radio frequency unit may be independent of the 2500 communication apparatus or may be integrated into the 2500 communication apparatus.Certainly, the 2510 transceiver may also include an antenna, for example, a remote antenna independent of the 2500 communication device, or an antenna integrated into the 2500 communication device. In the hardware implementation, the 2420 transceiver module may be the 2510 transceiver.

[00208] A specific means of connection between the 2510 transceiver, the 2520 processor, and the 2530 memory is not limited in embodiments of this application. In embodiments of this application, the 2530 memory, the 2520 processor, and the 2510 transceiver are connected via a 2540 bus in FIG. 25. The bus is Petition 870250091376, dated 07 / 10 / 2025, pp. 110 / 171 98 / 102 represented by a bold line in FIG. 25. One way of connecting other components is merely an example for description and is not limited to this. The bus can be classified into an address bus, a data bus, a control bus, and so on. For ease of representation, only one bold line is used for representation in FIG. 25, but this does not mean that there is only one bus or only one type of bus.

[00209] In embodiments of this application, the 2520 processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or perform the methods, steps, and logic block diagrams disclosed in embodiments of this application. The general-purpose processor may be a microprocessor, or any conventional or similar processor. The method steps disclosed with reference to embodiments of this application may be performed directly by a hardware processor or may be performed by using a combination of hardware in the processor and a software module.

[00210] In embodiments of this application, 2530 memory may be non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), or it may be volatile memory, such as random access memory (RAM). Memory is any other medium that can carry or store expected program code in the form of an instruction or a data structure and that can be accessed by a computer, but is not limited to this. Memory in embodiments of this application may alternatively be a circuit or any other device that can implement a storage function and Petition 870250091376, dated 07 / 10 / 2025, pp. 111 / 171 99 / 102 should be configured to store program instructions and / or data.

[00211] It should be noted that the communication apparatus in the preceding embodiments may be an AP, a STA, a circuit, a chip used in an AP or an STA, or other combined component, component or similar that has a function of the AP or STA. As a possible product embodiment, the AP or STA described in embodiments of this application may also be implemented using the following components: one or more FPGAs, a PLD, a controller, a state machine, gate logic, a discrete hardware component, any other suitable circuit or any combination of circuits that can perform various functions described in this application.

[00212] The first device in some embodiments of this application may be an AP or a STA. The second device may be an AP or a STA. It should be understood that APs in various product forms have any function of the AP in the previous method embodiments. Details are not described again in this document. STAs in various forms have any function of the STA in the previous method embodiments. Details are not described again in this document.

[00213] One embodiment of this application further provides a communication system. Specifically, the communication system includes a second device and a first device, or it may include even more first devices and second devices. For example, the communication system includes the second device and the first device that are configured to implement related functions in FIG. 12, FIG. 13, FIG. 17, or FIG. 21.

[00214] One embodiment of this application further provides a computer-readable storage medium, including instructions. When the instructions are run on a computer, the computer is enabled to perform the method performed by the first device or the second device in FIG. 12, FIG. 13, FIG. Petition 870250091376, dated 07 / 10 / 2025, pp. 112 / 171 100 / 102 17, or FIG. 21.

[00215] One embodiment of this application further provides a computer program product, including computer program code. When the computer program code is run on a computer, the computer is enabled to perform the method performed by the first device or the second device in FIG. 12, FIG. 13, FIG. 17, or FIG. 21.

[00216] One embodiment of this application provides a chip system. The chip system includes a processor, may also include memory, and is configured to implement the functions of the first device or the second device in the preceding methods. The chip system may include a chip, or it may include a chip and another discrete component.

[00217] One embodiment of this application further provides a communication apparatus, including a processor and an interface. The processor is configured to perform one or more prior method embodiments. Alternatively, the processor is configured to perform the capability indication method or the capability determination method in one or more prior method embodiments.

[00218] It should be understood that the communication device can be a chip. The processor can be implemented by hardware or by software. When the processor is implemented by hardware, the processor can be a logic circuit, an integrated circuit, or similar. When the processor is implemented by software, the processor can be a general-purpose processor. The general-purpose processor is implemented by reading software code stored in memory. The memory can be integrated into the processor or it can be located outside the processor and exist independently.

[00219] All or some of the methods in embodiments of this application may be implemented using software, hardware, firmware, or any combination thereof. When software is used Petition 870250091376, dated 07 / 10 / 2025, pp. 113 / 171 101 / 102 To implement the embodiments, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the procedure or functions according to the embodiments of the present invention are wholly or partially generated. The computer may be a general-purpose computer, a dedicated computer, a computer network, a network device, user equipment, or other programmable apparatus. The computer instructions may be stored on a computer-readable storage medium or may be transmitted from one computer-readable storage medium to another computer-readable storage medium.For example, computer instructions can be transmitted from one site, computer, server, or data center to another site, computer, server, or data center via wire (e.g., a coaxial cable, fiber optic cable, or digital subscriber line (DSL)) or wirelessly (e.g., infrared, radio, or microwave). A computer-readable storage medium can be any usable medium accessible by the computer, or a data storage device (e.g., a server or data center) that integrates one or more usable media. The usable medium can be a magnetic medium (e.g., a floppy disk, a hard disk, or magnetic tape), an optical medium (e.g., a digital video disc (DVD)), a semiconductor medium (e.g., an SSD), or similar.

[00220] It is clear that a person skilled in the art may make various modifications and variations to this request without departing from the scope of this request. This request aims to cover such modifications and variations to this request, provided they are within Petition 870250091376, dated 07 / 10 / 2025, pp. 114 / 171 102 / 102 of the scope of protection defined by the following claims and their equivalent technologies. Petition 870250091376, dated 07 / 10 / 2025, pp. 115 / 171

Claims

1 / 12 CLAIMS 1. A method for indicating capacity in a wireless local area network, CHARACTERIZED in that it comprises: determining, by a first device, capacity information and sending, by the first device, the capacity information to a second device, wherein the capacity information comprises a nominal packet padding subfield, the nominal packet padding subfield indicating a corresponding nominal packet padding value used when the second device sends a Physical Layer Protocol Data Unit (PPDU) to the first device, to enable the second device to determine, based on the nominal packet padding value, the duration of a packet extension field (PE) comprised in the PPDU, and the nominal packet padding value is for all spatial flow numbers (NSSs),and all RU allocations that the first device supports and for at least two modulation schemes used by the second device in a configured frequency domain resource or a configured spatial stream.

2. Method for determining capacity in a wireless local area network, CHARACTERIZED in that it comprises: receiving, by a second device, capacity information from a first device, wherein the capacity information comprises a nominal packet padding subfield, the nominal packet padding subfield indicating a corresponding nominal packet padding value used when the second device sends a physical layer protocol data unit, PPDU, to the first device, and the nominal packet padding value is for all spatial stream numbers, NSSs, and all RU allocations that the first device supports and for at least two modulation schemes used by the second device in a Petition 870250091376, dated 07 / 10 / 2025, p.148 / 171 2 / 12 configured frequency domain resource or a configured spatial stream; determine, by the second device, the nominal packet padding value based on the configured frequency domain resource and spatial stream and the at least two modulation schemes used; and determine, by the second device based on the nominal packet padding value, the duration of a packet extension field PE comprised in the PPDU, wherein the duration of the PE field allows the first device sufficient time to analyze the PPDU received from the second device.

3. Method, according to claim 1 or 2, CHARACTERIZED in that the capacity information further comprises a subfield of physical layer packet extension threshold presence, and a value of the physical layer packet extension threshold presence subfield is 0.

4. Method according to claim 2, CHARACTERIZED in that the determination, by the second device, of the nominal packet filling value based on the configured frequency domain feature and spatial stream and the at least two modulation schemes used comprises: determining, by the second device, the nominal packet filling value based on a configured number of spatial streams, the configured frequency domain feature and a higher-order modulation scheme in the at least two modulation schemes.

5. Method, according to any one of claims 1 to 4, CHARACTERIZED in that: a nominal packet padding subfield status value is 0, and the nominal packet padding value is 8 microseconds; a nominal packet padding subfield status value is 1, and the nominal packet padding value is 16 microseconds; a nominal packet padding subfield status value is 2, and the nominal packet padding value is 20 microseconds; or a nominal packet padding subfield status value is 3, the second device sends the PPDU to the first device using at least two modulation schemes, and the nominal packet padding value is 20 microseconds.

6. A method according to any one of claims 1 to 4, characterized in that a nominal packet-filling subfield status value is 3, a constellation index corresponding to the highest-order modulation scheme in at least two modulation schemes is less than or equal to a constellation index threshold, and one or more of the following conditions are met, the nominal packet-filling value is 16 microseconds; otherwise, the nominal packet-filling value is 20 microseconds: the allocation size of a resource unit RU / multi-resource unit MRU is less than or equal to a size threshold, the size of a RU or an MRU corresponding to the highest-order modulation scheme is less than or equal to a size threshold, or a number of spacetime streams NSS is less than or equal to a spatial stream number threshold.

7. Method, according to claim 6, CHARACTERIZED in that the constellation index threshold is 5, the size threshold is 2x996 tones, and the spatial stream number threshold is 8 or 16.

8. Method of indicating capacity in a wireless local area network, CHARACTERIZED in that it comprises: determining, by a first device, capacity information and sending, by the first device, the capacity information to a second device, wherein the capacity information comprises a field of physical layer packet extension thresholds, the physical layer packet extension threshold field comprises a resource unit index bitmask subfield, RU, a space-time stream number subfield, NSS, and a physical layer packet extension threshold information field, the physical layer packet extension threshold information field comprises a plurality of sets of packet extension threshold subfields corresponding to different packet padding nominal values,Each set of packet extension threshold subfields indicates a modulation threshold corresponding to an NSS, where ne is a RU / MRU corresponding to a sequence number b. The modulation threshold is used by the second device to determine a nominal packet padding value used to send a Physical Layer Protocol Data Unit (PPDU) to the first device. The nominal packet padding value is for the first device, which supports the second device in using at least two modulation schemes when the configured NSS is nea. The RU / MRU corresponds to the sequence number b, where a range of values ​​for n is a subset of [N1,..., N2], where both N1 and N2 are integers greater than or equal to 1, and a range of values ​​for b is a subset of [M1,..., M2], where M1 and M2 are integers greater than or equal to 0.

9. Method for determining capacity in a wireless local area network, CHARACTERIZED in that it comprises: receiving, by a second device, capacity information sent by a first device, wherein the capacity information comprises a physical layer packet extension threshold field, the physical layer packet extension threshold field comprises a resource unit index bit mask subfield, RU, a number of space-time stream subfields, NSS, and a physical layer packet extension threshold information field, Petition 870250091376, dated 07 / 10 / 2025, p.151 / 171 5 / 12 The physical layer packet extension threshold information field comprises a plurality of sets of packet extension threshold subfields corresponding to different nominal packet padding values, each set of packet extension threshold subfields indicates a modulation threshold corresponding to an NSS where ne is a RU / MRU corresponding to a sequence number b, the modulation threshold is used by the second device to determine a nominal packet padding value used to send a physical layer protocol data unit, PPDU, to the first device, and the nominal packet padding value is for the first device that supports the second device in the use of at least two modulation schemes when the configured NSS is nea RU / MRU corresponding to sequence number b, where a range of values ​​of n is a subset of [N1,...[M1,..., M2], both N1 and N2 are integers greater than or equal to 1, a range of values ​​of b is a subset of [M1,..., M2], and both M1 and M2 are integers greater than or equal to 0; determine, by the second device, the nominal packet filling value based on a configured frequency domain feature and spatial stream and the at least two modulation schemes used; and determine, by the second device based on the nominal packet filling value, the duration of a packet extension field, PE, comprised in the PPDU, wherein the duration of the PE field allows the first device sufficient time to analyze the PPDU received from the second device.

10. Method according to claim 8 or 9, CHARACTERIZED in that the capacity information further comprises a subfield of physical layer packet extension threshold presence, and a value of the physical layer packet extension threshold presence subfield is 1. Petition 870250091376, dated 10 / 07 / 2025, pp. 152 / 171 6 / 12 11. Method, according to any one of claims 8 to 10, CHARACTERIZED in that each set of packet extension threshold subfields satisfies one or more of the following: a nominal packet filling value corresponding to at least two modulation schemes is a nominal packet filling value corresponding to a second modulation scheme, a constellation index corresponding to the second modulation scheme is a sum of a constellation index corresponding to a higher-order modulation scheme in at least two modulation schemes and a first value, and the first value is not equal to 0; a modulation threshold corresponding to the NSS being nea RU corresponding to sequence number b is a modulation threshold corresponding to the NSS being nea RU corresponding to sequence number b', b' is a sum of b and a second value, and the second value is not equal to 0;a modulation threshold corresponding to the NSS being n' and the RU corresponding to the sequence number b, n' is a sum of n and a third value, and the third value is not equal to 0; or a modulation threshold corresponding to the NSS being n' and the RU corresponding to the sequence number b corresponds to a nominal packet filling value of 20 microseconds.

12. Communication device, CHARACTERIZED in that it comprises: a processing module, configured to determine capacity information, wherein the capacity information comprises a nominal packet padding subfield, the nominal packet padding subfield indicating a corresponding nominal packet padding value used when a second device sends a protocol data unit. Petition 870250091376, dated 07 / 10 / 2025, page 1.153 / 171 7 / 12 physical layer, PPDU, for the communication device, to enable the second device to determine, based on the nominal packet padding value, the duration of a packet extension field, PE, comprised in the PPDU, and the nominal packet padding value is for all spatial stream numbers (NSSs) and all RU allocations that the communication device supports and for at least two modulation schemes used by the second device in a configured frequency domain resource or a configured spatial stream; and a transceiver module, configured to send the capacity information to the second device.

13. Communication apparatus, CHARACTERIZED in that it comprises: a transceiver module, configured to receive capacity information from a first device, wherein the capacity information comprises a nominal packet padding subfield, the nominal packet padding subfield indicating a corresponding nominal packet padding value used when the communication apparatus sends a Physical Layer Protocol Data Unit, PPDU, to the first device, and the nominal packet padding value is for all spatial stream numbers, NSSs, and all RU allocations that the first device supports and for at least two modulation schemes used by the communication apparatus in a configured frequency domain resource or a configured spatial stream;and a processing module, configured to: determine the nominal packet filling value based on the configured frequency domain and spatial flow feature and the at least two modulation schemes used, and determine, based on the nominal packet filling value, the duration of a packet extension field, PE, comprised in the PPDU, wherein the duration of the PE field allows the first device sufficient time to analyze the PPDU received from the communication apparatus.

14. Device according to claim 12 or 13, CHARACTERIZED in that the capacity information further comprises a physical layer packet extension threshold presence subfield, and a value of the physical layer packet extension threshold presence subfield is 0.

15. Apparatus, according to claim 13, CHARACTERIZED in that the processing module is specifically configured to: determine the nominal packet filling value based on a configured number of spatial streams, the configured frequency domain feature, and a higher-order modulation scheme in at least two modulation schemes.

16. Device according to any one of claims 12 to 15, CHARACTERIZED in that a nominal packet filling subfield status value is 0, and the nominal packet filling value is 8 microseconds; a nominal packet filling subfield status value is 1, and the nominal packet filling value is 16 microseconds; a nominal packet filling subfield status value is 2, and the nominal packet filling value is 20 microseconds; or a nominal packet filling subfield status value is 3, the second device sends the PPDU to the first device using at least two modulation schemes, and the nominal packet filling value is 20 microseconds.

17. Device according to any one of claims 12 to 15, CHARACTERIZED in that when a nominal packet filling subfield status value is 3, a constellation index corresponding to the highest-order modulation scheme in at least two modulation schemes is less than or equal to a constellation index threshold, and one or more of the following conditions are met, the nominal packet filling value is 16 microseconds; Otherwise, the nominal packet filling value is 20 microseconds: the allocation size of a resource unit (RU) / multiple resource unit (MRU) is less than or equal to a size threshold, the size of a RU or MRU corresponding to the higher-order modulation scheme is less than or equal to a size threshold, or a number of spacetime streams (NSS) is less than or equal to a spatial stream number threshold.

18. Apparatus, according to claim 17, CHARACTERIZED in that the constellation index threshold is 5, the size threshold is 2x996 tones, and the spatial stream number threshold is 8 or 16.

19. Communication apparatus, CHARACTERIZED in that it comprises: a processing module, configured to determine capacity information, wherein the capacity information comprises a physical layer packet extension threshold field, the physical layer packet extension threshold field comprises a resource unit index bit mask subfield, RU, a space-time stream number subfield, NSS, and a physical layer packet extension threshold information field, the physical layer packet extension threshold information field comprises a plurality of sets of packet extension threshold subfields corresponding to different nominal packet padding values, each set of packet extension threshold subfields indicates a modulation threshold corresponding to an NSS being ne a RU / MRU corresponding to a sequential number b,The modulation threshold is used by the second device to determine a nominal packet padding value used to send a protocol data unit (PPDU) to the communication device, and the nominal packet padding value is for the communication device that supports the second device in the use of at least two modulation schemes when the configured NSS is nea RU / MRU. This corresponds to the sequence number b, where a range of values ​​of n is a subset of [N1,..., N2], both N1 and N2 are integers greater than or equal to 1, a range of values ​​of b is a subset of [M1,..., M2], and M1 and M2 are integers greater than or equal to 0; and a transceiver module, configured to send the capacity information to the second device.

20. Communication apparatus, CHARACTERIZED in that it comprises: a transceiver module, configured to receive capacity information sent by a first device, wherein the capacity information comprises a physical layer packet extension threshold field, the physical layer packet extension threshold field comprises a resource unit index bit mask subfield, RU, a space-time stream number subfield, NSS, and a physical layer packet extension threshold information field, the physical layer packet extension threshold information field comprises a plurality of sets of packet extension threshold subfields corresponding to different packet padding nominal values, each set of packet extension threshold subfields indicates a modulation threshold corresponding to an NSS being ne a RU / MRU corresponding to a sequential number b,The modulation threshold is used by the communication device to determine a nominal packet padding value used to send a physical layer protocol data unit, PPDU, to the first device, and the nominal packet padding value is for the first device that supports the communication device in the use of at least two modulation schemes when the configured NSS is nea RU / MRU corresponds to the sequential number b, where a range of values ​​of n is a subset of [N1,..., N2], both N1 and N2 are integers greater than or equal to 1, a range of values ​​of b is a subset of [M1,..., M2], and both M1 and M2 are integers greater than or equal to 0; and a processing module, configured to: determine the nominal packet padding value based on the configured frequency domain and spatial flow features and the at least two modulation schemes used,and determine, based on the nominal packet padding value, the duration of a packet extension field, PE, included in the PPDU, where the duration of the PE field allows the first device sufficient time to analyze the PPDU received from the communication device.

21. Device according to claim 19 or 20, CHARACTERIZED in that the capacity information further comprises a physical layer packet extension threshold presence subfield, and a value of the physical layer packet extension threshold presence subfield is 1.

22. Apparatus, according to any one of claims 19 to 21, CHARACTERIZED in that each set of packet extension threshold subfields satisfies one or more of the following: a nominal packet filling value corresponding to at least two modulation schemes is a nominal packet filling value corresponding to a second modulation scheme, a constellation index corresponding to the second modulation scheme is a sum of a constellation index corresponding to a higher-order modulation scheme in at least two modulation schemes and a first value, and the first value is not equal to 0; Petition 870250091376, dated 10 / 07 / 2025, p.158 / 171 12 / 12 a modulation threshold corresponding to the NSS being nea RU corresponding to the sequence number b is a modulation threshold corresponding to the NSS being nea RU corresponding to the sequence number b', b' is a sum of b and a second value, and the second value is not equal to 0; a modulation threshold corresponding to the NSS being nea RU corresponding to the sequence number b is a modulation threshold corresponding to the NSS being n' and a RU corresponding to the sequence number b, n' is a sum of n and a third value, and the third value is not equal to 0; or a modulation threshold corresponding to the NSS being neo RU corresponding to the sequence number b corresponds to a nominal packet filling value of 20 microseconds.

23. Chip, CHARACTERIZED in that the chip comprises at least one processor and one interface, the processor is configured to read and execute instructions stored in a memory and, when the instructions are run, the chip is enabled to perform the method as defined in any one of claims 1 to 11.

24. Computer-readable storage medium, CHARACTERIZED in that the computer-readable storage medium stores a computer program, the computer program comprises program instructions and, when the program instructions are executed by a computer, the computer is enabled to perform the method as defined in any one of claims 1 to 11.

25. Computer program product, CHARACTERIZED in that the computer program product comprises a computer program and, when the computer program is run on a computer, the computer is enabled to perform the method as defined in any of claims 1 to 11. Petition 870250091376, dated 10 / 07 / 2025, pp. 159 / 171

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