CN115243325A

CN115243325A - Information transmission method and device, computer readable storage medium and chip

Info

Publication number: CN115243325A
Application number: CN202110437124.6A
Authority: CN
Inventors: 于健; 狐梦实; 刘辰辰; 淦明
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2022-10-25
Also published as: BR112023021722A2; WO2022222775A1

Abstract

The embodiment of the disclosure provides an information transmission method, an information transmission device, a computer readable storage medium and a chip. In the method, a transmitting device generates a-PPDU based on at least two PPDUs, a first PPDU of the a-PPDUs including at least one of: first indication information for indicating a bandwidth of the first PPDU, second indication information for indicating a total bandwidth of the A-PPDUs, or third indication information for indicating a bandwidth combination of the A-PPDUs; and the transmitting device transmits the A-PPDU to the receiving device. In this way, in the embodiment of the present disclosure, the sending device aggregates at least two PPDUs into an a-PPDU and then sends the a-PPDU, which can fully utilize the transmission bandwidth, reduce the number of times of sending, and is more energy-saving and efficient for the sending device.

Description

Information transmission method, device, computer readable storage medium and chip

Technical Field

The present disclosure relates to the field of communications, and more particularly, to a method, apparatus, computer-readable storage medium, and chip for information transmission.

Background

The evolution of the 802.11 standards for Wireless Local Area Network (WLAN) systems has progressed from 802.11a/b/g through 802.11n,802.11ac,802.11ax and 802.11be. The 802.11ax standard is called High Efficiency (HE), the 802.11be standard is called very High Throughput (EHT), and the standards after 802.11be are expressed by EHT +.

802.11ax has 4 Physical Protocol Data Unit (PPDU) formats in common, and 802.11be defines two PPDU formats. However, as the amount of data transmission in networks continues to increase, current schemes for transmitting PPDUs are inefficient and imperfect.

Disclosure of Invention

Example embodiments of the present disclosure provide a method, apparatus, computer-readable storage medium, and chip for information transmission. The A-PPDU can be generated based on at least two PPDUs and transmitted, thereby reducing the number of transmission times, and improving the channel utilization rate and the PPDU transmission efficiency.

In a first aspect, a method for information transmission is provided. The method comprises the following steps: a transmitting device generates an aggregated physical layer protocol data unit, a-PPDU, based on at least two physical layer protocol data units, PPDUs, a first PPDU of the a-PPDU including at least one of: first indication information used for indicating the bandwidth of the first PPDU, second indication information used for indicating the total bandwidth of the A-PPDU, or third indication information used for indicating the bandwidth combination of the A-PPDU; and the sending equipment sends the A-PPDU to the receiving equipment.

Therefore, in the embodiment of the disclosure, the sending device can aggregate at least two PPDUs into an a-PPDU and then send the a-PPDU, so that the transmission bandwidth can be fully utilized, the number of sending times is reduced, and the sending device is more energy-saving and efficient. And, the first PPDU in the a-PPDU may include one or more of the first indication information, the second indication information, and the third indication information, so that the receiving device can know more comprehensive indication information about the bandwidth and perform more effective subsequent processing based thereon.

In some embodiments of the first aspect, the first PPDU includes the first indication information and the second indication information, where the first indication information is carried in a first signaling field of the first PPDU, and the second indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

Illustratively, the first PPDU is a very high throughput EHT multi-user MU PPDU, the first signaling field is a general signaling field U-SIG, and the second signaling field is a very high throughput signaling field EHT-SIG. Accordingly, the first indication information may be carried in at least one bit of B3-B5 of the first symbol of the U-SIG of the first PPDU. The second indication information may be carried in at least one bit of the following bits of the first PPDU: b25 of the first symbol of the U-SIG, B2 of the second symbol of the U-SIG, B8 of the second symbol of the U-SIG, B20-B24 of the first symbol of the U-SIG, and B13-B16 of the EHT-SIG.

In this way, the first PPDU includes the first indication information and the second indication information at the same time, so that the receiving device can know not only the bandwidth of receiving the first PPDU but also the total bandwidth of the a-PPDU at the same time. In this way, the receiving device can better perform some out-of-band interference suppression, etc., thereby enhancing its reception.

In some embodiments of the first aspect, the first PPDU includes the first indication information and the second indication information, the second indication information is carried in a first signaling field of the first PPDU, and the first indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

Illustratively, the first PPDU is an EHT MU PPDU, the first signaling field is a U-SIG, and the second signaling field is an EHT-SIG. Accordingly, the second indication information may be carried in at least one bit of B3-B5 of the first symbol of the U-SIG of the first PPDU. The first indication information may be carried in at least one bit of the following bits of the first PPDU: b25 of the first symbol of the U-SIG, B2 of the second symbol of the U-SIG, B8 of the second symbol of the U-SIG, B20-B24 of the first symbol of the U-SIG, and B13-B16 of the EHT-SIG.

In some embodiments of the first aspect, the first PPDU includes the first indication information and the third indication information, where the first indication information is carried in a first signaling field of the first PPDU, and the third indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

Illustratively, the first PPDU is an EHT MU PPDU, the first signaling field is a U-SIG, and the second signaling field is an EHT-SIG. Accordingly, the first indication information may be carried in at least one bit of B3-B5 of the first symbol of the U-SIG of the first PPDU. The third indication information may be carried in at least one bit of the following bits of the first PPDU: b25 of the first symbol of the U-SIG, B2 of the second symbol of the U-SIG, B8 of the second symbol of the U-SIG, B20-B24 of the first symbol of the U-SIG, and B13-B16 of the EHT-SIG.

Thus, the first PPDU includes the first indication information and the third indication information at the same time, so that the receiving device can learn not only the bandwidth of receiving the first PPDU but also the bandwidths of other PPDUs in the a-PPDU at the same time. In this way, the receiving device is better able to perform some out-of-band interference suppression, etc., thereby enhancing its reception.

In some embodiments of the first aspect, the first PPDU includes the second indication information and the third indication information, where the second indication information is carried in a first signaling field of the first PPDU, and the third indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

Illustratively, the first PPDU is an EHT MU PPDU, the first signaling field is U-SIG, and the second signaling field is EHT-SIG. Accordingly, the second indication information may be carried in at least one bit of B3-B5 of the first symbol of the U-SIG of the first PPDU. The third indication information may be carried in at least one bit of the following bits of the first PPDU: b25 of the first symbol of the U-SIG, B2 of the second symbol of the U-SIG, B8 of the second symbol of the U-SIG, B20-B24 of the first symbol of the U-SIG, and B13-B16 of the EHT-SIG.

In this way, the first PPDU includes the second indication information and the third indication information at the same time, so that the receiving device can know not only the total bandwidth of the a-PPDU but also the bandwidth of each PPDU in the a-PPDU at the same time. In this way, the receiving device can better perform some out-of-band interference suppression, etc., thereby enhancing its reception.

In some embodiments of the first aspect, each bandwidth of the bandwidth combination indicated by the third indication information may correspond to each PPDU arranged in ascending or descending frequency order.

In this way, by arranging the bandwidths in the bandwidth combination in ascending or descending frequency, the bandwidth of the first PPDU does not need to be additionally indicated, and the signaling overhead is reduced. And the receiving device can quickly and accurately determine the bandwidth of the PPDU received by the receiving device from the bandwidth combination based on the parked frequency, thereby improving the processing efficiency of the receiving device.

In certain embodiments of the first aspect, at least one bit of the first signaling field and/or the second signaling field of the first PPDU is used to indicate that the first PPDU is aggregated in the a-PPDU.

In this way, by using at least one bit to indicate that the first PPDU is aggregated in the a-PPDU, the receiving device can know the manner in which the transmitting device transmits the first PPDU, and the receiving device can quickly determine which of the first indication information, the second indication information, and the third indication information the indication information carried by some specific fields is based on the at least one bit, which can improve the processing efficiency of the receiving device.

In certain embodiments of the first aspect, the at least one bit is a confirm bit and/or a don't care bit.

Thus, at least one bit is carried by the validation bit, so that it can pass the relevant information in version-independence to the MAC layer and terminate reception for the first type of device because the validation bit is not equal to the default value. Therefore, the influence of the first-class equipment on other normal receiving equipment can be avoided. Transparency to the first type of device is achieved by disregarding the bits to carry at least one bit so that it can continue with other receiving or processing operations regardless of the at least one bit for the first type of device.

In certain embodiments of the first aspect, the a-PPDU further comprises a second PPDU that is a high efficiency HE MU PPDU or an EHT MU PPDU.

Thus, in the embodiment of the present disclosure, when aggregation is performed, HE MU PPDU may also be compatible at the same time, and full utilization of wireless transmission bandwidth is further achieved.

In certain embodiments of the first aspect, generating the a-PPDU comprises: the transmitting device generates a Long Training Field (LTF) in the first PPDU based on at least one of a bandwidth of the first PPDU, a total bandwidth of the A-PPDUs, and the bandwidth combination.

In this way, the LTF (e.g., EHT-LTF) can be generated based on richer information in the disclosed embodiment, which can enable optimization of the LTF, and the receiving device can further reduce PAPR based on this.

In certain embodiments of the first aspect, generating the LTF further comprises: the transmitting device generates the LTF based on a type of each of the A-PPDUs.

In this way, the disclosed embodiment further considers the type of each PPDU in a-PPDU when generating LTFs (e.g., EHT-LTFs), which can achieve optimization of LTFs and further reduce PAPR based on this.

In a second aspect, a method of information transmission is provided. The method comprises the following steps: a receiving device receives a first PPDU of aggregated physical layer protocol data units (A-PPDUs) from a transmitting device, the first PPDU including at least one of: first indication information for indicating a bandwidth of the first PPDU, second indication information for indicating a total bandwidth of the A-PPDU, or third indication information for indicating a bandwidth combination of the A-PPDU; and the receiving device parses the first PPDU.

Thus, in the embodiment of the present disclosure, the first PPDU received by the receiving device may include one or more of the first indication information, the second indication information, and the third indication information, so that the receiving device can obtain more comprehensive indication information about bandwidth, and further can better perform some out-of-band interference suppression and the like, thereby enhancing the reception thereof.

In some embodiments of the second aspect, the first PPDU includes the first indication information and the second indication information, the first indication information is carried in a first signaling field of the first PPDU, and the second indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

Illustratively, the first PPDU is a very high throughput EHT multi-user MU PPDU, the first signaling field is a general signaling field U-SIG, and the second signaling field is a very high throughput signaling field EHT-SIG. Accordingly, the first indication information may be carried in at least one bit of B3-B5 of the first symbol of the U-SIG of the first PPDU. The second indication information may be carried in at least one bit of the following bits of the first PPDU: b25 of the first symbol of U-SIG, B2 of the second symbol of U-SIG, B8 of the second symbol of U-SIG, B20-B24 of the first symbol of U-SIG, B13-B16 of EHT-SIG.

In some embodiments of the second aspect, the first PPDU includes the first indication information and the second indication information, where the second indication information is carried in a first signaling field of the first PPDU, and the first indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

In some embodiments of the second aspect, the first PPDU includes the first indication information and the third indication information, the first indication information is carried in a first signaling field of the first PPDU, and the third indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

In some embodiments of the second aspect, the first PPDU includes the second indication information and the third indication information, the second indication information is carried in a first signaling field of the first PPDU, and the third indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

Illustratively, the first PPDU is an EHT MU PPDU, the first signaling field is a U-SIG, and the second signaling field is an EHT-SIG. Accordingly, the second indication information may be carried in at least one bit of B3-B5 of the first symbol of the U-SIG of the first PPDU. The third indication information may be carried in at least one bit of the following bits of the first PPDU: b25 of the first symbol of U-SIG, B2 of the second symbol of U-SIG, B8 of the second symbol of U-SIG, B20-B24 of the first symbol of U-SIG, B13-B16 of EHT-SIG.

In this way, the first PPDU simultaneously comprises the second indication information and the third indication information, so that the receiving device can know not only the total bandwidth of the A-PPDUs, but also the bandwidth of each PPDU in the A-PPDUs. In this way, the receiving device can better perform some out-of-band interference suppression, etc., thereby enhancing its reception.

In some embodiments of the second aspect, each bandwidth in the bandwidth combination indicated by the third indication information may correspond to each PPDU arranged in ascending or descending frequency order.

In this way, by arranging the bandwidths in the bandwidth combination in an ascending or descending frequency manner, the bandwidth of the first PPDU does not need to be additionally indicated, and the signaling overhead is reduced. And the receiving device can quickly and accurately determine the bandwidth of the PPDU received by the receiving device from the bandwidth combination based on the parked frequency, thereby improving the processing efficiency of the receiving device.

In certain embodiments of the second aspect, at least one bit in the first signaling field and/or the second signaling field of the first PPDU is used to indicate that the first PPDU is aggregated in the a-PPDU.

In some embodiments of the second side, at least one bit is a confirm bit and/or a don't care bit.

Thus, at least one bit is carried by the validation bit, so that it can pass the relevant information in version-independence to the MAC layer for the first type of device because the validation bit is not equal to the default value, and terminate reception. Therefore, the influence of the first-class equipment on other normal receiving equipment can be avoided. Transparency to the first type of device is achieved by disregarding the bits to carry at least one bit so that it can continue with other receiving or processing operations regardless of the at least one bit for the first type of device.

In certain embodiments of the second aspect, the a-PPDU further comprises a second PPDU that is a high efficiency HE MU PPDU or an EHT MU PPDU.

In certain embodiments of the second aspect, further comprising: the receiving device determining a Long Training Field (LTF) in the first PPDU based on at least one of the bandwidth, the total bandwidth, and the bandwidth combination; the receiving device performs channel estimation based on the LTF.

In certain embodiments of the second aspect, wherein the determining, by the receiving device, the LTF in the first PPDU based on at least one of the bandwidth, the total bandwidth, and the bandwidth combination further comprises: the receiving device determines the LTF based on a type of each of the A-PPDUs.

In this way, in the embodiment of the present disclosure, the receiving device can determine the LTF (e.g., EHT-LTF) based on richer information, which can achieve optimization of the LTF and can further reduce PAPR based on this.

In a third aspect, an apparatus for information transmission is provided. The apparatus may include: a generation unit configured to generate an aggregated physical layer protocol data unit, A-PPDU, based on at least two physical layer protocol data units, PPDUs, a first PPDU of the A-PPDUs comprising at least one of: first indication information used for indicating the bandwidth of the first PPDU, second indication information used for indicating the total bandwidth of the A-PPDU, or third indication information used for indicating the bandwidth combination of the A-PPDU; and a transmitting unit configured to transmit the a-PPDU to a receiving apparatus.

In some embodiments of the third aspect, the first PPDU includes the first indication information and the second indication information, where the first indication information is carried in a first signaling field of the first PPDU, and the second indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

In some embodiments of the third aspect, the first PPDU includes the first indication information and the second indication information, where the second indication information is carried in a first signaling field of the first PPDU, and the first indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

In some embodiments of the third aspect, the first PPDU includes the first indication information and the third indication information, where the first indication information is carried in a first signaling field of the first PPDU, and the third indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

In some embodiments of the third aspect, the first PPDU includes the second indication information and the third indication information, the second indication information is carried in a first signaling field of the first PPDU, and the third indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

In some embodiments of the third aspect, each bandwidth in the bandwidth combination indicated by the third indication information may correspond to each PPDU arranged in ascending or descending frequency order.

In certain embodiments of the third aspect, at least one bit of the first signaling field and/or the second signaling field of the first PPDU is used to indicate that the first PPDU is aggregated in the a-PPDU.

In certain embodiments of the third aspect, at least one bit is a confirm bit and/or a don't care bit.

In certain embodiments of the third aspect, the first PPDU is an EHT MU PPDU, the first signaling field is a U-SIG, and the second signaling field is an EHT-SIG.

In certain embodiments of the third aspect, the a-PPDU further comprises a second PPDU, which is an HE MU PPDU or an EHT MU PPDU.

In certain embodiments of the third aspect, the generating unit is configured to: generating an LTF in the first PPDU based on at least one of a bandwidth of the first PPDU, a total bandwidth of the A-PPDU, and the bandwidth combination.

In certain embodiments of the third aspect, the generating unit is configured to: the LTF is also generated based on a type of each of the A-PPDUs.

The apparatus of the third aspect or any embodiment thereof may be implemented at a transmitting device, such as may be implemented at an AP or STA.

In a fourth aspect, an apparatus for information transmission is provided. The device comprises: a receiving unit configured to receive a first PPDU of aggregated physical layer protocol data units (A-PPDUs) from a transmitting device, the first PPDU including at least one of: first indication information for indicating a bandwidth of the first PPDU, second indication information for indicating a total bandwidth of the A-PPDU, or third indication information for indicating a bandwidth combination of the A-PPDU; and a parsing unit configured to parse the first PPDU.

In some embodiments of the fourth aspect, the first PPDU includes the first indication information and the second indication information, the first indication information is carried in a first signaling field of the first PPDU, and the second indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

In some embodiments of the fourth aspect, the first PPDU includes the first indication information and the second indication information, the second indication information is carried in a first signaling field of the first PPDU, and the first indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

In some embodiments of the fourth aspect, the first PPDU includes the first indication information and the third indication information, the first indication information is carried in a first signaling field of the first PPDU, and the third indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

In some embodiments of the fourth aspect, the first PPDU includes the second indication information and the third indication information, the second indication information is carried in a first signaling field of the first PPDU, and the third indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

In some embodiments of the fourth aspect, the respective bandwidths in the combination of bandwidths indicated by the third indication information may correspond to the respective PPDUs arranged in ascending or descending order of frequency.

In certain embodiments of the fourth aspect, at least one bit in the first signaling field and/or the second signaling field of the first PPDU is used to indicate that the first PPDU is aggregated in the a-PPDU.

In certain embodiments of the fourth aspect, at least one bit is a confirm bit and/or a don't care bit.

In certain embodiments of the fourth aspect, the first PPDU is an EHT MU PPDU, the first signaling field is U-SIG, and the second signaling field is EHT-SIG.

In certain embodiments of the fourth aspect, the a-PPDU further comprises a second PPDU that is an HE MU PPDU or an EHT MU PPDU.

In certain embodiments of the fourth aspect, further comprising a processing unit configured to: determining a Long Training Field (LTF) in the first PPDU based on at least one of the bandwidth, the total bandwidth, and the bandwidth combination; and performing channel estimation based on the LTF.

In certain embodiments of the fourth aspect, wherein the processing unit is configured to: the LTF is also determined based on a type of each of the A-PPDUs.

The apparatus of the fourth aspect or any embodiment thereof may be implemented at a receiving device, such as an AP or STA.

In a fifth aspect, an apparatus for information transmission is provided. The apparatus comprises a processor and a memory having stored thereon instructions for execution by the processor, which when executed by the processor, cause the apparatus to perform: generating an aggregated physical layer protocol data unit, A-PPDU, based on at least two physical layer protocol data units, PPDUs, a first PPDU of the A-PPDUs comprising at least one of: first indication information for indicating a bandwidth of the first PPDU, second indication information for indicating a total bandwidth of the A-PPDU, or third indication information for indicating a bandwidth combination of the A-PPDU; and transmitting the A-PPDU to a receiving device.

In some embodiments of the fifth aspect, the first PPDU includes the first indication information and the second indication information, the first indication information is carried in a first signaling field of the first PPDU, and the second indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

In some embodiments of the fifth aspect, the first PPDU includes the first indication information and the second indication information, where the second indication information is carried in a first signaling field of the first PPDU, and the first indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

In some embodiments of the fifth aspect, the first PPDU includes the first indication information and the third indication information, the first indication information is carried in a first signaling field of the first PPDU, and the third indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

In some embodiments of the fifth aspect, the first PPDU includes the second indication information and the third indication information, the second indication information is carried in a first signaling field of the first PPDU, and the third indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

In some embodiments of the fifth aspect, each bandwidth of the bandwidth combination indicated by the third indication information may correspond to each PPDU arranged in ascending or descending frequency order.

In certain embodiments of the fifth aspect, at least one bit of the first signaling field and/or the second signaling field of the first PPDU is used to indicate that the first PPDU is aggregated in the a-PPDU.

In some embodiments of the fifth aspect, the at least one bit is a confirm bit and/or a don't care bit.

In certain embodiments of the fifth aspect, the first PPDU is an EHT MU PPDU, the first signaling field is a U-SIG, and the second signaling field is an EHT-SIG.

In certain embodiments of the fifth aspect, the a-PPDU further comprises a second PPDU that is a high efficiency HE MU PPDU or an EHT MU PPDU.

In certain embodiments of the fifth aspect, execution of the instructions by the processor causes the apparatus to perform: generating an LTF in the first PPDU based on at least one of a bandwidth of the first PPDU, a total bandwidth of the A-PPDU, and the bandwidth combination.

In certain embodiments of the fifth aspect, execution of the instructions by the processor causes the apparatus to perform: the LTF is also generated based on a type of each of the A-PPDUs.

In a sixth aspect, an apparatus for information transmission is provided. The apparatus comprises a processor and a memory having stored thereon instructions for execution by the processor, the instructions when executed by the processor causing the apparatus to perform: receiving a first PPDU of aggregated physical layer protocol data units (A-PPDUs) from a transmitting device, the first PPDU comprising at least one of: first indication information used for indicating the bandwidth of the first PPDU, second indication information used for indicating the total bandwidth of the A-PPDU, or third indication information used for indicating the bandwidth combination of the A-PPDU; and parsing the first PPDU.

In some embodiments of the sixth aspect, the first PPDU includes the first indication information and the second indication information, the first indication information is carried in a first signaling field of the first PPDU, and the second indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

In some embodiments of the sixth aspect, the first PPDU includes the first indication information and the second indication information, the second indication information is carried in a first signaling field of the first PPDU, and the first indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

In some embodiments of the sixth aspect, the first PPDU includes the first indication information and the third indication information, where the first indication information is carried in a first signaling field of the first PPDU, and the third indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

In some embodiments of the sixth aspect, the first PPDU includes the second indication information and the third indication information, the second indication information is carried in a first signaling field of the first PPDU, and the third indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

In some embodiments of the sixth aspect, each bandwidth in the combination of bandwidths indicated by the third indication information may correspond to each PPDU arranged in ascending or descending order of frequency.

In certain embodiments of the sixth aspect, at least one bit of the first signaling field and/or the second signaling field of the first PPDU is used to indicate that the first PPDU is aggregated in the a-PPDU.

In certain embodiments of the sixth aspect, at least one bit is a confirm bit and/or a don't care bit.

In certain embodiments of the sixth aspect, the first PPDU is an EHT MU PPDU, the first signaling field is U-SIG, and the second signaling field is EHT-SIG.

In certain embodiments of the sixth aspect, the a-PPDU further comprises a second PPDU that is a high efficiency HE MU PPDU or an EHT MU PPDU.

In certain embodiments of the sixth aspect, the processor executes the instructions, causing the apparatus to: determining a Long Training Field (LTF) in the first PPDU based on at least one of the bandwidth, the total bandwidth, and the bandwidth combination; and performing channel estimation based on the LTF.

In certain embodiments of the sixth aspect, the processor executes the instructions, causing the apparatus to: the LTF is also determined based on a type of each of the A-PPDUs.

In any aspect of the apparatus for information transmission provided in the third aspect to the sixth aspect, or any implementation manner thereof, and beneficial effects that can be achieved by the apparatus for information transmission provided in the first aspect or the second aspect, or any implementation manner thereof, and beneficial effects that can be achieved by the apparatus for information transmission provided in the third aspect to the sixth aspect may be referred to, and are not described herein again.

In a seventh aspect, an access point is provided. The Access Point (AP) comprises means for information transmission as described in any of the third to sixth aspects or any implementation thereof.

In an eighth aspect, a station is provided. The Station (STA) comprises means for information transmission as described in any of the third to sixth aspects or any implementation thereof.

A ninth aspect provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the operations of the method of information transmission according to any of the embodiments of the first or second aspect described above.

In a tenth aspect, a chip or chip system is provided. The chip or chip system comprises one or more processing circuits for implementing the operations of the method of information transfer in any of the embodiments of the first or second aspect described above.

In an eleventh aspect, a computer program or computer program product is provided. The computer program or computer program product is tangibly stored on a computer-readable medium and comprises computer-executable instructions that, when executed, cause an apparatus to perform operations of a method of information transfer according to any of the embodiments of the first or second aspect described above.

In a twelfth aspect, a wireless communication system is provided. The system includes a transmitting device and a receiving device. The sending device may implement the operations of the method for information transmission in any of the embodiments according to the first aspect described above, and the receiving device may implement the operations of the method for information transmission in any of the embodiments according to the second aspect described above.

In a thirteenth aspect, a wireless communication system is provided that includes at least one AP and at least one STA. Any AP or any STA may implement the operations of the method of information transmission according to any embodiment of the first or second aspect described above.

Drawings

Fig. 1 illustrates a schematic diagram of a communication system 100 provided by an embodiment of the present disclosure;

fig. 2 illustrates a schematic diagram of another communication system 200 provided by an embodiment of the present disclosure;

fig. 3 illustrates a schematic diagram of a format 300 of an HE MU PPDU provided by an embodiment of the present disclosure;

fig. 4 is a diagram illustrating a format 400 of an EHT MU PPDU provided by an embodiment of the present disclosure;

fig. 5 is a diagram illustrating a format 500 of an EHT + MU PPDU provided by an embodiment of the present disclosure;

fig. 6 is a diagram illustrating a channel division 600 of a bandwidth provided by an embodiment of the present disclosure;

fig. 7 is a flowchart illustrating a method 700 for data transmission according to an embodiment of the disclosure;

FIG. 8 is a diagram illustrating a format 800 of an A-PPDU according to an embodiment of the present disclosure;

fig. 9 is a diagram illustrating another format 900 of a-PPDU provided by an embodiment of the present disclosure;

fig. 10 is a diagram illustrating another format 1000 of a-PPDU provided by an embodiment of the present disclosure;

FIG. 11 is a diagram illustrating another format 1100 of an A-PPDU in accordance with an embodiment of the present disclosure;

fig. 12 is a diagram illustrating another format 1200 of a-PPDU provided by an embodiment of the present disclosure;

FIG. 13 is a diagram illustrating another format 1300 of an A-PPDU provided by embodiments of the present disclosure;

fig. 14 shows a schematic diagram of another format 1400 of a-PPDU provided by an embodiment of the present disclosure;

fig. 15 shows a flow chart of another method 1500 for data transmission provided by the embodiments of the present disclosure;

fig. 16 is a schematic diagram of an apparatus 1600 for data transmission provided by an embodiment of the present disclosure;

fig. 17 is a schematic diagram of another apparatus 1700 for data transmission provided by the embodiment of the disclosure;

fig. 18 shows a schematic diagram of another apparatus 1800 for data transmission according to an embodiment of the present disclosure.

Detailed Description

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings used in the description of the embodiments will be briefly introduced below.

In describing embodiments of the present disclosure, the terms "include" and its derivatives should be interpreted as being inclusive, i.e., "including but not limited to. The term "based on" should be understood as "based at least in part on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The terms "first," "second," and the like may refer to different or the same object. Other explicit and implicit definitions are also possible below.

The disclosed embodiments may be applied to a wireless communication system, such as a wide area network system or a Wireless Local Area Network (WLAN) system. The wireless communication system may support a variety of WLAN communication protocols, such as 802.11ac/802.11ax/802.11be in the Institute of Electrical and Electronics Engineers (IEEE) 802.11 family of protocols or any of the future IEEE 802.11 family. For convenience of description, the embodiments of the present disclosure take a WLAN as an example for illustration. The WLAN may include a plurality of Basic Service Sets (BSSs), and the nodes of the BSS include stations of an Access Point class and stations of a Non-Access Point class (Non-AP STA), where the stations of the Access Point class are generally referred to as Access Points (APs) for short and the stations of the Non-Access Point class are generally referred to as stations (stations, STAs) for short. Each basic service set may contain an AP and one or more STAs associated with the AP. The access point is a device with wireless transceiving function and can provide service for the station. The station is a device with a wireless transceiving function and can access the wireless local area network based on the access point. Embodiments of the present disclosure may be implemented in an Access Point (AP), which may also be referred to as a wireless access point or hotspot, etc. The AP is an access point for a mobile subscriber to enter a wired network, and is mainly deployed in a home, a building, and a campus, and typically covers several tens of meters to hundreds of meters, but may also be deployed outdoors. The AP acts as a bridge connecting a wired network and a wireless network, and has a main function of connecting STAs together and then connecting the wireless network to the wired network. Alternatively, the AP may be a terminal device or a network device with a Wireless Fidelity (Wi-Fi) chip, for example, the AP may be a communication server, a router, a switch or a bridge, etc. Alternatively, the AP may be a device supporting 802.11 standard in the current network system or a future network system.

The disclosed embodiments may be implemented in a Station (STA), which may be a wireless communication chip, a wireless sensor, or a wireless communication terminal. For example, a STA may also be referred to as a system, subscriber unit, access terminal, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, user device, or User Equipment (UE). The STA may be a wireless communication chip, a wireless sensor, or a wireless communication terminal. For example, the STA is a mobile phone supporting a Wi-Fi communication function, a tablet computer supporting the Wi-Fi communication function, a set top box supporting the Wi-Fi communication function, a smart television supporting the Wi-Fi communication function, a smart wearable device supporting the Wi-Fi communication function, an in-vehicle communication device supporting the Wi-Fi communication function, a computer supporting the Wi-Fi communication function, and the like. Alternatively, the STA may support 802.11 standard devices in the current network system or in a future network system.

Fig. 1 shows a schematic diagram of a communication system 100 provided by an embodiment of the present disclosure. As shown in fig. 1, the data transmission system includes a sending device 101 and a receiving device 102, and the sending device 101 and the receiving device 102 can communicate with each other through a wireless network.

The transmitting device 101 shown in fig. 1 may be an AP or an STA, and the receiving device 102 may be an AP or an STA. And it is understood that although only a single sending device 101 and a single receiving device 102 are shown in fig. 1, the present disclosure is not limited thereto, for example, the system 100 may include a plurality of receiving devices 102, and the sending device 101 may communicate with a plurality of receiving devices 102, or other scenarios, etc., which are not listed in the present disclosure.

Fig. 2 is a schematic diagram of another communication system 200 provided by the embodiment of the present disclosure. Fig. 2 shows two APs, AP 201 and AP 202. Fig. 2 also shows three user stations, STA221, STA 222, and STA 223. Wireless communication between APs, APs and STAs, and STAs can be performed through various standards. Embodiments of the present disclosure may be applied to communication between APs, STA and STA, and AP and STA. For example, in conjunction with fig. 2, communication between AP 201 and AP202 may be possible, communication between STA 222 and STA 223 may be possible, communication between AP 201 and STA221, communication between AP 201 and STA 223 may be possible, and so on. It should be noted that fig. 2 is merely illustrative, for example, in some embodiments AP202 may also communicate with at least one of STA221, STA 222, and STA 223. For example, in some embodiments, STA221 may also communicate with STA 222 and/or STA 223.

For convenience of description, the AP 201 and the AP202 are hereinafter collectively referred to as AP20, and the STA221, the STA 222, and the STA 223 are hereinafter collectively referred to as STA 22.

It should also be understood that fig. 1 and fig. 2 are only schematic diagrams, and other network devices or terminal devices, such as wireless relay devices and wireless backhaul devices, may also be included in the

systems

100 and 200. In addition, the number of the transmitting devices 101 and the receiving devices 102 included in the system 100 and the number of the APs 20 and the STAs 22 included in the system 200 are not limited in the embodiment of the present disclosure.

The 4 PPDU formats supported by 802.11ax and the 2 PPDU formats defined in 802.11be of the WLAN are shown in table 1 below.

TABLE 1

It should be understood that the HE SU PPDU (High efficiency Single User Physical Layer Protocol Data Unit) may be used for point-to-point transmissions between the AP20 and the STA 22. The HE MU PPDU (High Efficient Multiple User Physical Layer Protocol Data Unit) may be used for multi-User transmission between the AP20 and a plurality of STAs 22, and may also be used for transmission between the AP20 and a single STA 22. Illustratively, the format of the HE MU PPDU may be as shown in fig. 3.

Fig. 3 shows a schematic diagram of a format 300 of an HE MU PPDU provided by an embodiment of the present disclosure. As shown in fig. 3, format 300 includes: ext> Legacyext> Shortext> -ext> Trainingext> Fieldext> (ext> Lext> -ext> STFext>)ext> 301ext>,ext> Legacyext> -ext> Longext> -ext> Trainingext> Fieldext> (ext> Lext> -ext> LTFext>)ext> 302ext>,ext> Legacyext> -ext> signalingext> Fieldext> (ext> Lext> -ext> SIGext>)ext> 303ext>,ext> Legacyext> -ext> signalingext> Fieldext> repetitionext> (ext> RLext> -ext> SIGext>)ext> 304ext>,ext> Highext> -ext> efficiencyext> signalingext> Fieldext> Aext> (ext> HEext> -ext> SIGext> -ext> Aext>)ext> 305ext>,ext> Highext> -ext> efficiencyext> signalingext> Fieldext> Bext> (ext> HEext> -ext> SIGext> -ext> Bext>)ext> 306ext>,ext> Highext> -ext> efficiencyext> Shortext> -ext> Trainingext> Fieldext> (ext> HEext> -ext> STFext>)ext> 307ext>,ext> andext> Highext> -ext> efficiencyext> Longext> -ext> Trainingext> Fieldext> (ext> HEext> -ext> LTFext>)ext> 308ext>.ext> After the Data field (Data) 309, a Packet Extension (PE) 310 is also included.

Illustratively, the L-STF 301 may be used for PPDU discovery, coarse synchronization, automatic gain control, and the like. L-LTF 302 may be used for fine synchronization, channel estimation, etc. The L-SIG 303 may be used to carry signaling information related to the PPDU length, to ensure coexistence, and the like. RL-SIG 304 is used to represent a repetition of L-SIG 303. The HE-SIG-a305 may be used to carry signaling, etc., needed for demodulation of the HE-SIG-B and subsequent data. The HE-SIG-B306 may be configured to carry signaling for demodulating subsequent data, and mainly includes resource unit indication information and the like. The HE-STF 307 may be used for automatic gain control of subsequent fields, etc. HE-LTF 308 may be used for channel estimation, etc. Data 309 may be used to carry Data information. The PE 310 may be used to help the receiving device get more processing time, etc.

Similarly, an EHT MU PPDU defined in 802.11be may be used for transmissions between one or more APs 20 and one or more STAs 22. For example, the format of the EHT MU PPDU may be as shown in fig. 4.

Fig. 4 shows a schematic diagram of a format 400 of an EHT MU PPDU provided by an embodiment of the present disclosure. As shown in fig. 4, format 400 includes: a Legacy Short Training Field (L-STF) 401, a Legacy-Long Training Field (L-LTF) 402, a Legacy signaling Field (L-SIG) 403, a Legacy signaling Field repeat (RL-SIG) 404, a generic signaling Field (U-SIG) 405, an Extremely High Throughput signaling Field (Extray High Throughput Signal Field, T-SIG) 406, an Extremely High Throughput Short Training Field (Extray High Throughput Field, EHT-STF) 407, and an Extremely High Throughput Long Training Field (Extray High Throughput Field, EHT-LTF) 408. After the Data field (Data) 409, a Packet Extension (PE) 410 is also included.

Illustratively, the L-STF 401 may be used for PPDU discovery, coarse synchronization, automatic gain control, and the like. The L-LTF 402 may be used for fine synchronization, channel estimation, etc. The L-SIG 403 may be used to carry signaling information related to the PPDU length, to ensure coexistence, and the like. RL-SIG 404 is used to represent the repetition of L-SIG 403. U-SIG 405 is a generic signaling field employed from EHT. The EHT-SIG 406 may be configured to carry signaling for demodulating subsequent data, and mainly include resource unit indication information and the like. The EHT-STF 407 may be used for automatic gain control of subsequent fields, etc. The EHT-LTF 408 may be used for channel estimation, etc. Data 409 may be used to carry Data information. The PE 410 may be used to help the receiving device get more processing time, etc.

In some embodiments, the U-SIG 405 can include two Orthogonal Frequency Division Multiplexing (OFDM) symbols, each symbol including 26 bits. The content indicated by the 26 bits (B0 to B25) included in the first symbol (U-SIG-1) of the U-SIG 405 can be referred to table 2 below, and the content indicated by the 26 bits (B0 to B25) included in the second symbol (U-SIG-2) of the U-SIG 405 can be referred to table 3 below.

TABLE 2

TABLE 3

Illustratively, specific indications of the uplink and downlink fields (B6 of U-SIG-1) and the PPDU type and compressed mode fields (B0-B1 of U-SIG-2) are shown in Table 4 below.

TABLE 4

In conjunction with tables 2 and 3 above, U-SIG 405 includes a Bandwidth (BW), located at B3-B5 of U-SIG-1. U-SIG 405 includes a Validate bit at B25 of U-SIG-1 and at B2 and B8 of U-SIG-2. The U-SIG 405 includes a don't care (Disregard) bit, located at B20-B24 of U-SIG-1. Optionally, bits in this disclosure may also be referred to as fields, which are not limited herein.

Illustratively, the EHT-SIG 406 may include spatial multiplexing, GI (GI: guard Interval, guard Interval) + EHT-LTF size, number of EHT-LTF symbols, and so on. The EHT-SIG 406 also includes a Disregard (Disregard) bit or field located at B13-B16 of the EHT-SIG 406.

Similarly, an EHT + PPDU may be defined as a collective term for PPDUs following 802.11be. It is understood that EHT + is a generic term for a code number that may appear after 802.11be, such as 802.11bx,802.11cx, etc., which is not limited in this disclosure. The EHT + MU PPDU may be a format of an EHT + MU PPDU, and may also be used for transmissions between one or more APs 20 and one or more STAs 22. For example, the format of the EHT + MU PPDU may be as shown in fig. 5.

Fig. 5 illustrates a schematic diagram of a format 500 of an EHT + MU PPDU provided by an embodiment of the present disclosure. As shown in fig. 5, format 500 includes: legacy Short Training Field (L-STF) 501, legacy Long Training Field (L-LTF) 502, legacy signaling Field (L-SIG) 503, legacy signaling Field repetition (RL-SIG) 504, generic signaling Field (U-SIG) 505, evolved throughput signaling Field (EHT + -SIG) 506, evolved very high throughput Short Training Field (EHT + -STF) 507, and evolved very high throughput Long Training Field (EHT + -LTF) 508. After the Data field (Data) 509, a Packet Extension (PE) 510 is also included.

Illustratively, 501 to 510 in fig. 5 may have similar meanings as 401 to 410 in fig. 4, respectively, with the difference being primarily EHT in fig. 4 and EHT + in fig. 5. For the sake of brevity, this is not repeated here.

Specifically, the reserved/unused bits (reserved bits) in the signaling field or the reserved/unused status (entries) of a certain (sub) field in the physical layer preamble are classified into two types, namely irrational (dismard) and acknowledged (valid), respectively. And, in general, a default value (or default value) is set in advance for the validation (valid). In some embodiments, the default value (or default value) may be 1.

The first version (Release 1, R1) of the 802.11be standard relates to some basic features, accordingly, a device supporting the first version may be referred to as a device implementing the EHT basic feature, and may be identified by using an attribute value in a management information base, for example, a device implementing only the point 11EHT baseline feature (dot 11EHT base linefeatureimplementonly) may be identified as 1 to represent the device implementing the EHT basic feature. Other devices after the first version of device may be referred to as devices that do not implement the basic EHT feature, or may also be referred to as devices that implement the advanced EHT feature, and similarly, may also be identified by using an attribute value in the management information base, for example, a device that does not implement the basic EHT feature may be represented by identifying (dot 11 ehtbaselinefeatureimplementonty) as 0. For simplicity of description, in the embodiments of the present disclosure, a device that implements the EHT basic characteristics is referred to as a first type device, and a device that does not implement the EHT basic characteristics is referred to as a second type device.

For a first type of device (a device implementing the basic characteristics of the EHT), if it finds that a validation (valid) bit within the PPDU is not set to a default value (or a default value) or values of some subfields are set to a validation (valid) state, it needs to wait until the PPDU is ended (defer for the duration of the PPDU), transfer related information in version-nothing to a Medium Access Control (MAC) layer for guaranteeing coexistence, and terminate reception of the PPDU. And for the sub-fields of the ignore (dismard) bit or set to the ignore state, if the verify (valid) bit is not found to be set to the default value (or default value) or the values of some sub-fields are set to the verify (valid) state, the ignore (dismard) bit or some sub-fields set to the ignore state are ignored, and the reading of other fields is continued.

In conjunction with the above description, there are 5-bit mismatches and 3-bit confirmations in the U-SIG 405, and additionally 4-bit mismatches included in the EHT-SIG 406. In the joint indication of the uplink/downlink subfield and the PPDU type and compressed mode subfield (see table 4), there is an acknowledgement status. When any 1 of the confirmed bits is set to a non-default value, the receiving device waits until the PPDU is ended, and passes the related information in version independence to the MAC layer for ensuring coexistence, and terminates the reception of the PPDU. Similarly, when the uplink and downlink sub-field and the PPDU type and compressed mode sub-field joint indication are in a confirmation state, the receiving device also waits until the PPDU is ended, and transfers the related information in the version independence to the MAC layer to ensure coexistence and terminate the reception of the PPDU. And whatever value any don't care bit is set to, if there is no acknowledgement bit in the PPDU that is not a default value and an acknowledgement status, the receiving device may ignore the don't care bit or the don't care subfield and continue to receive other fields.

As WLAN 802.11 evolves, the bandwidth it allows for transmission also gradually changes. The bandwidth allowed by the 802.11a/g standard is 20MHz, the bandwidth allowed by the 802.11n standard is 20MHz or 40MHz, the bandwidth allowed by the 802.11ax standard is 20MHz,40MHz,80MHz or 160MHz, and the bandwidth supported by the 802.11be standard is expanded to 320MHz, so that the peak throughput rate can be obviously improved, and the transmission rate is further improved.

In a WLAN, channels are generally divided into a master channel and a slave channel. The AP20 selects a 20MHz channel as the primary channel in the entire bandwidth. The 80MHz channel containing the primary channel will be referred to as the primary 80MHz channel, with the other 80MHz channels being non-primary 80MHz channels. The 160MHz channel containing the primary channel is referred to as the primary 160MHz channel, and the other 160MHz channel is a non-primary 160MHz channel, or a secondary 160MHz channel. Illustratively, the location of the primary 80MHz channel (or the primary 160MHz channel) may be selected by the AP20 when establishing a Basic Service Set (BSS), and the AP20 may transmit in a broadcast fashion via a beacon frame to notify all STAs 22.

It can be seen that as the supported bandwidth is further extended, in general, the bandwidth of a single PPDU may be smaller than the available bandwidth, and thus aggregating multiple PPDUs may achieve full utilization of the bandwidth in the frequency domain.

Fig. 6 shows a schematic diagram of a channel division 600 of a bandwidth provided by an embodiment of the present disclosure. Specifically, fig. 6 illustrates the channel division of the Unlicensed National Information Infrastructure (U-NII) radio band (radio band) in the 6GHz band. 80MHz 610, 160MHz 620, 320MHz-1 630 and 320MHz-2 640 are shown in FIG. 6. It will be appreciated that in order to make efficient use of the channel, two 320MHz channels are designed, 320MHz-1 with channel center frequencies of 31/95/159 and 320MHz-2 with channel center frequencies of 63/127/191, 630 and 640 respectively, in FIG. 6.

It should be noted that fig. 6 only shows the channel division 600 in the 6GHz band, and this schematic diagram is only used as an example and is not a limitation on the context of the embodiment of the present disclosure. Although some embodiments of the present disclosure are combined with the channel division 600 shown in fig. 6, it should be understood that the embodiments of the present disclosure may also be combined with other channel divisions different from fig. 6, and are not described herein again.

Currently, data transmission is via PPDUs and only one PPDU can be transmitted at a time. Such a transmission scheme is inefficient. The embodiment of the disclosure provides an information transmission method, and at least two PPDUs are aggregated into an A-PPDU for retransmission, so that the transmission bandwidth can be fully utilized, the transmission times are reduced, and the transmission efficiency is higher. This will be explained in detail below with reference to fig. 7 to 15.

Fig. 7 shows a flowchart of a method 700 for data transmission according to an embodiment of the present disclosure. The method 700 in fig. 7 relates to the transmitting device 101 and the receiving device 102.

In the method 700 shown in fig. 7, the transmitting device 101 may generate (710) an a-PPDU based on at least two PPDUs, the a-PPDU including a first PPDU. The transmitting device 101 transmits (720) an a-PPDU to the receiving device 102. The receiving device 102 parses (730) a first PPDU of the a-PPDUs.

In the method 700, the transmitting device 101 may generate 710 an aggregated physical layer protocol data unit (a-PPDU) based on at least two PPDUs, a first PPDU of the a-PPDU including at least one of: the first indication information is used for indicating the bandwidth of the first PPDU; second indication information for indicating a total bandwidth of the A-PPDU; or third indication information for indicating a bandwidth combination of the a-PPDU.

Specifically, the transmitting device 101 may aggregate at least two PPDUs in the Frequency Domain, thereby generating a Frequency Domain Aggregated physical layer protocol data unit (a-PPDU) Aggregated in the Frequency Domain. The A-PPDU may comprise one or more first PPDUs.

In some embodiments, the first PPDU included by the a-PPDU is also referred to as a first sub-PPDU (sub-PPDU), which is referred to as being part of the a-PPDU. Accordingly, the Bandwidth (BW) of a PPDU may also be referred to as a sub-Bandwidth (sub-BW). For convenience of description, a PPDU is not distinguished from a sub PPDU hereinafter, that is, a first PPDU and a first sub PPDU may represent the same concept hereinafter.

To enable information transmission, it can be appreciated that the total bandwidth of the a-PPDU is not greater than the total available bandwidth, which in the scenario of fig. 6 is 320MHz. It is understood that in other scenarios, however, the available bandwidth may be other values, for example, the available bandwidth may be further extended to larger, 480MHz, 640MHz, or other values, etc., in evolving very high throughput rates that may evolve in the future.

In the embodiments of the present disclosure, the first PPDU may be an EHT MU PPDU or an EHT + MU PPDU. Taking the example where the first PPDU is an EHT MU PPDU, it may have the format 400 as shown in fig. 4. Taking the example where the first PPDU is an EHT + MU PPDU, it may have the format 500 as shown in fig. 5. It is understood that EHT + is a generic term for a code number that may appear after 802.11be, such as 802.11bx,802.11cx, etc., which is not limited in this disclosure.

In the embodiments of the present disclosure, the a-PPDU may further include a second PPDU, wherein the number of the second PPDU may be zero, one, or multiple. The second PPDU may be any one of an HE MU PPDU, an EHT MU PPDU, or an EHT + MU PPDU. In case the second PPDU is an HE MU PPDU, it may have a format 300 as shown in fig. 3. In case the second PPDU is an EHT MU PPDU, it may have a format 400 as shown in fig. 4. In case the second PPDU is an EHT + MU PPDU, it may have a format 500 as shown in fig. 5.

That is, the a-PPDU may include a first PPDU and a second PPDU, the number of the first PPDU may be one or more, and the number of the second PPDU may be 0 or 1 or more. Alternatively, the type of the second PPDU may be an HE MU PPDU. Or alternatively, the type of the second PPDU may be an EHT MU PPDU, an EHT + MU PPDU, or the like, and the second PPDU may have a different format from the first PPDU. For example, the first PPDU includes the second indication information, and the second PPDU does not include the second indication information. For another example, the first PPDU includes the third indication information, and the second PPDU does not include the third indication information. It is understood that the examples herein are merely illustrative and are merely provided to explain format differences of the first PPDU and the second PPDU, and should not be construed as limiting the embodiments of the present disclosure.

It is to be appreciated that at 710, the transmitting device 101 may aggregate at least two PPDUs, the number of PPDUs aggregated being greater than or equal to 2, e.g., it may be assumed that N PPDUs are aggregated to generate an a-PPDU. And at most N-1 PPDUs of the N PPDUs are HE MU PPDUs. The first PPDU in the present disclosure may be any one PPDU of the N PPDUs except the HE MU PPDU. That is, the first PPDU in the embodiments of the present disclosure may be understood as any one of the non-HE MU PPDUs included in the a-PPDU, and is not described in detail in the present disclosure.

The following will mainly explain an embodiment in which the first PPDU includes indication information, and it is understood that if the second PPDU is an EHT MU PPDU or an EHT + MU PPDU, the second PPDU also similarly includes indication information. That is, in some examples, all or a portion of the a-PPDUs may include indication information, similar to the first PPDU. Alternatively, in some examples, each of the A-PPDUs that is not a HE may include indication information, similar to the first PPDU. Also, in the following description, the type of the first PPDU is EHT MU PPDU as an example, it is understood that the type of the first PPDU may also be EHT + MU PPDU, EHT + + MU PPDU, and the like, and the disclosure is not set forth in detail with respect to other types.

In one implementation, the first PPDU may include first indication information, and the first indication information may be used to indicate a bandwidth of the first PPDU.

The first indication information may be carried in a first signaling field of the first PPDU. Illustratively, the first signaling field may be a U-SIG. Specifically, the first indication information may be carried in a bandwidth field (BW) of a U-SIG of the first PPDU. That is, the first indication information may be carried in at least one bit of 4 th to 6 th bits (B3-B5) of a first symbol (U-SIG-1) of a U-SIG field of the first PPDU.

For example, two bits B3-B4 or B4-B5 may be used to carry the first indication, such as "0" for 20MHz, "1" for 40MHz, "2" for 80MHz, "3" for 160MHz, or otherwise. By way of further example, three bits B3-B5 may be used to carry the first indication, such as "0" for 20MHz, "1" for 40MHz, "2" for 80MHz, "3" for 160MHz, "4" for 320MHz-1, "5" for 320MHz-2, or otherwise. It is understood that these examples are illustrative only and should not be construed as limiting the embodiments of the disclosure.

In this implementation, generating a Long Training Field (LTF) according to the first indication information may be further included. Specifically, the long training field of the first PPDU may be generated based on a bandwidth of the first PPDU. In examples where the first indication information is carried in a BW field of the U-SIG, the EHT-LTF 408 may be generated based on the BW field.

EHT-LTF 408 is used primarily for channel estimation and may carry a predefined (known to the receiving device) sequence for channel estimation by receiving device 102.

After the receiving device 102 receives the signal, the received signal may be divided by the known sequence for each subcarrier to obtain a channel value. Because an OFDM (Orthogonal Frequency Division Multiplexing) symbol is formed by superimposing a plurality of independently modulated subcarrier signals, when phases of the subcarriers are the same or close to each other, the superimposed signal is modulated by a signal with the same initial phase, so as to generate a larger instantaneous Power Peak, thereby further bringing a higher Peak-to-Average Power Ratio (PAPR). Because the dynamic range of a general power amplifier is limited, a signal with a relatively large PAPR easily enters a nonlinear region of the power amplifier, so that nonlinear distortion is generated on the signal, and obvious spectrum spreading interference and in-band signal distortion are caused, so that the performance of the whole system is seriously reduced. High PAPR has become a major technical impediment to OFDM.

In the embodiment of the present disclosure, according to different PPDU bandwidths, different EHT-LTF sequences may be designed to optimize PAPR under different bandwidth conditions. Further, the symbol removal guard interval of the EHT-LTF 408 field typically has three sizes (3.2 microseconds, 6.4 microseconds, 12.8 microseconds), referred to as 1x/2x/4x EHT-LTFs, respectively. The EHT-LTF sequence is a sequence consisting of 1, -1,0, and the detailed sequence form is not described herein. In some examples, the first indication information is "0" - "5" of the BW field (B3-B5 bits) of U-SIG-1, which in turn means that the bandwidth of the first PPDU is 20MHz,40MHz,80MHz,160MHz,320MHz-1, 320MHz-2. Accordingly, the different EHT-LTF sequences generated according to bandwidth may be:

(1) When the BW field is indicated as 4 or 5 (PPDU BW is 320MHz-1 or 320 MHz-2), the EHT-LTF sequence may be any of the following: EHTLTF _{320MHz_1x} ，EHTLTF _{320MHz_2x} ，EHTLTF _{320MHz_4x} ；

(2) When the BW field is indicated as 3 (PPDU BW is 160 MHz), the EHT-LTF sequence may be any of: EHTLTF _{160MHz_1x} ，EHTLTF _{160MHz_2x} ，EHTLTF _{160MHz_4x} ；

(3) When the BW field is indicated as 2 (PPDU BW is 80 MHz), the EHT-LTF sequence may be any of the following: EHTLTF _{80MHz_1x} ，EHTLTF _{80MHz_2x} ，EHTLTF _{80MHz_4x} ；

(4) When the BW field is indicated as 1 (PPDU BW is 40 MHz), the EHT-LTF sequence may be any of the following: EHTLTF _{40MHz_1x} ，EHTLTF _{40MHz_2x} ，EHTLTF _{40MHz_4x} ；

(5) When the BW field indicates 0 (PPDU BW is 20 MHz), the EHT-LTF sequence may be any of the following: EHTLTF _{20MHz_1x} ，EHTLTF _{20MHz_2x} ，EHTLTF _{20MHz_4x} 。

Under a certain bandwidth, selecting the size of 1x/2x/4x EHT-LTF is a trade-off between channel estimation accuracy and overhead, and depends on a transmission mode, a channel environment, and the like, which is not limited in the embodiment of the present disclosure. In addition, it should be noted that the above is an exemplary and non-exhaustive list, and that other EHT-LTF sequences may be included, and the disclosure is not to be exhaustive.

Fig. 8 shows a schematic diagram of a format 800 of an a-PPDU provided by an embodiment of the present disclosure. In the format 800 of FIG. 8, the A-PPDU consists of 4 sub-PPDUs, PPDU 810, PPDU 820, PPDU 830, PPDU 840, respectively. In format 800, PPDU 810 is of the type HE MU PPDU. The types of

PPDUs

820, 830 and 840 are EHT MU PPDUs.

In format 800, the format of PPDU 810 is similar to format 300 of fig. 3, described above. The formats of PPDU 820, PPDU 830, and PPDU 840 are similar to the format 400 described above in FIG. 4. The U-SIG field of each of PPDU 820, PPDU 830 and PPDU 840 indicates that their respective bandwidths are 80MHz by "BW =80 MHz". The EHT-LTF field of each of PPDU 820, PPDU 830, and PPDU 840, all passing the "EHTLTF _{80MHz_4x} "to indicate the corresponding EHT-LTF sequence.

It should be understood that fig. 8 is merely illustrative and may include a lesser number of PPDUs, such as PPDU 810, for example, as well as PPDU 810, such as one or both of PPDU 820, PPDU 830 and PPDU 840. In addition, the EHT MU PPDU type in fig. 8 may be replaced with an EHT + MU PPDU, an EHT + + MU PPDU, or the like. The difference is mainly that the physical layer versions are different, for example, physical layer version 1 represents EHT +,2 represents EHT + +, etc.; or in other forms. The present disclosure is not limited thereto.

By the implementation, the PPDU in the A-PPDU is consistent with the single PPDU, so that the receiving device receives the A-PPDU and receives the single PPDU are the same, and the processing of the receiving device can be simplified, extra operation time is not needed, and the power consumption of the receiving device is saved. Specifically, in the present implementation, the bandwidth of the first PPDU is indicated by the BW of the U-SIG, and the EHT-LTF is generated based on the bandwidth of the first PPDU, so that the unification of the reception flow (including EHT-LTF sequence selection) of the first PPDU is achieved for both a-PPDU and a single PPDU.

In another implementation, the first PPDU includes first indication information and second indication information. The first indication information is used for indicating the bandwidth of the first PPDU, and the second indication information is used for indicating the total bandwidth of the A-PPDU. In the disclosed embodiment, the total bandwidth of the a-PPDU may also be referred to as an aggregate bandwidth (a-BW), which is not limited by the present disclosure.

In some embodiments, the first PPDU includes first indication information and second indication information. The first indication information may be carried in a first signaling field of the first PPDU, and the second indication information may be carried in the first signaling field and/or the second signaling field of the first PPDU. In some examples, the first signaling field may be U-SIG 405 as shown in fig. 4 and the second signaling field may be EHT-SIG 406 as shown in fig. 4.

In the embodiment of the present disclosure, the first indication information carried in the first signaling field of the first PPDU may refer to: the first indication information is carried in a bandwidth field (BW) of the U-SIG of the first PPDU, that is, the first indication information may occupy at least one bit from a 4 th bit to a 6 th bit (B3-B5) of a first symbol (U-SIG-1) of the U-SIG.

Exemplarily, the first indication information may have a first preset length, which may be denoted as L1.

In some examples, the granularity of the bandwidth when aggregation is performed is assumed to be 20MHz. In this example, the first preset length may be 3 bits. The B3-B5 bits (3 bits in length) of the U-SIG-1 may be represented by "0" for 20MHz, "1" for 40MHz, "2" for 80MHz, "3" for 160MHz, "4" for 320MHz-1, "5" for 320MHz-2, and others as confirmed. It is understood that "0" to "5" correspond to binary numbers of 000 to 101, and the usage in each example in the disclosure is consistent and will not be described again. That is, the first indication information is "0" - "5" in the bandwidth field of the U-SIG-1, which in turn indicates that the bandwidth of the first PPDU is 20MHz,40MHz,80MHz,160MHz,320MHz-1, 320MHz-2.

In some examples, the granularity of the bandwidth when aggregation is performed is assumed to be 40MHz. In this example, the first preset length may be 2 bits or 3 bits. In an example of 2 bits, any two bits of the B3-B5 bits of the U-SIG-1 may carry the first indication information, and in an example, "0" may be used to represent 40MHz, "1" may be used to represent 80MHz, "2" may be used to represent 160MHz, and other values are used for confirmation. That is, the first indication information is "0" - "2" in the bandwidth field of the U-SIG-1, which in turn means that the bandwidth of the first PPDU is 40mhz,80mhz,160mhz. In another example, "1" for 40MHz, "2" for 80MHz, "3" for 160MHz, "0" and other values may be used for confirmation.

In some examples, it is assumed that the granularity of the bandwidth when aggregation is performed is 80MHz. In this example, the first preset length may be 1 bit or 2 bits. Taking 1 bit as an example, any one of the B3-B5 bits of the U-SIG-1 may carry the first indication information, and "0" may be used to represent 80MHz, and "1" may be used to represent 160MHz. That is, the first indication information is "0" - "1" in the bandwidth field of the U-SIG-1, which in turn indicates that the bandwidth of the first PPDU is 80mhz,160mhz. In the example of 2 bits, in one example, "0" may be used for 80MHz, "1" may be used for 160MHz, and other values may be used for confirmation. In another example, "2" for 80MHz, "3" for 160MHz, "0", "1" and other values may be used for confirmation.

In this way, the bandwidth of the first PPDU is indicated in this way, and the receiving process (including EHT-LTF sequence selection) of the first PPDU is unified for the A-PPDU and single PPDU transmission modes.

However, it is understood that this is only an example, the first preset length may be other values, or the bandwidth of the first PPDU may be indicated in other manners in the bandwidth field of the U-SIG-1, and the like, which is not limited by the present disclosure. Alternatively, if the bandwidth of a single PPDU can be extended to 320MHz, 480MHz, or 640MHz or other values, the granularity of the bandwidth at the time of aggregation can be similarly extended to 320MHz, 480MHz, or 640MHz or other values, and the first preset length can be set to other values, such as 4 bits, etc. In an embodiment of the present disclosure, the granularity of the bandwidth may be used to represent the minimum bandwidth of a single PPDU.

In an embodiment of the present disclosure, the second indication information may be carried in the first signaling field and/or the second signaling field of the first PPDU. Specifically, at least three cases may be included: the first signaling field carries all the second indication information, (2) the second signaling field carries all the second indication information, and (3) one part of the second indication information is carried in the first signaling field and the other part of the second indication information is carried in the second signaling field.

Illustratively, the second indication information may be carried in the don't care and/or acknowledge bits of the U-SIG and/or the EHT-SIG of the first PPDU. In some examples, the second indication information may be located in part or all of: a 26 th bit (B25) of a first symbol (U-SIG-1) of the U-SIG field, a3 rd bit (B2) of a second symbol (U-SIG-2) of the U-SIG field, a 9 th bit (B8) of the U-SIG-2, a 21 st to 25 th bits (B20-B24) of the U-SIG-1, and a U-SIG overflow portion (B13-B16) of the EHT-SIG.

Illustratively, the second indication information may have a second preset length, which may be denoted as L2. For example, the total bandwidth, in which L2 bits are defined as the A-PPDU, may be arbitrarily selected from { B25 of U-SIG-1, B2 and B8 of U-SIG-2, B20-B24 of U-SIG-1, and B13-B16 of EHT-SIG }.

In some examples, it is assumed that the granularity of the bandwidth when aggregation is performed is 80MHz. In this example, the second preset length may be 1 bit or 2 bits. It should be understood that, in this example, the second preset length may be a larger value, such as 3 bits, 4 bits, etc., which the present disclosure does not limit.

For example, the second preset length is 1 bit, a "0" may be used to represent the total bandwidth of 160MHz, and a "1" may be used to represent the total bandwidth of 320MHz. For example, the second predetermined length is 2 bits, a "0" may be used to represent the total bandwidth of 160MHz, a "1" may be used to represent the total bandwidth of 320MHz-1, a "2" may be used to represent the total bandwidth of 320MHz-2, and the rest may be confirmed or ignored.

To simplify the description, the example is explained below with 1 bit as an example. Specifically, any one of the bits { B25 of U-SIG-1, B2 and B8 of U-SIG-2, B20-B24 of U-SIG-1, and B13-B16 of EHT-SIG } may carry the second indication information, and "0" may be used to represent the total bandwidth of 160MHz, and "1" may be used to represent the total bandwidth of 320MHz.

For example, any one of the bits B25 of { U-SIG-1, B2 of U-SIG-2, and B8 of U-SIG-2 } may be used to carry the second indication information, i.e., the second indication information may be carried by the confirmation bit. In consideration of the characteristics of the confirmation bits, in this example, at least one bit may be further selected from a position where the second indication information is not carried in { B25 of U-SIG-1, B2 of U-SIG-2, B8 of U-SIG-2 } for indicating that the first PPDU is aggregated in the a-PPDU.

For example, B25 of U-SIG-1 may be defined as whether it is an A-PPDU, with B25 of U-SIG-1 being a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. And further indicating the total bandwidth of the A-PPDU by B2 of the U-SIG-2 and/or B8 of the U-SIG-2. As another example, B2 of U-SIG-2 may be defined as whether it is an A-PPDU, which is a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. The total bandwidth of the A-PPDU is further indicated by B25 of U-SIG-1 and/or B8 of U-SIG-2. As another example, B8 of U-SIG-2 may be defined as whether it is an A-PPDU, which is a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. The total bandwidth of the A-PPDU is further indicated by B25 of U-SIG-1 and/or B2 of U-SIG-2. It should be noted that the above examples are not exhaustive, e.g. two bits may be used to define whether it is an a-PPDU, one bit to carry the second indication information, etc. Are not listed in this disclosure.

In this way, the aggregation of the first PPDU in the A-PPDU is indicated by at least one bit (confirmation bit), and for the first type of equipment, when the first type of equipment receives the A-PPDU, the first type of equipment can stop receiving the A-PPDU in time due to the fact that the confirmation bit is not equal to the default value, so that the power consumption is saved, and the normal receiving of other equipment is ensured.

As another example, any one of the bits B20-B24 of the { U-SIG-1, B13-B16 of the EHT-SIG } may be used to carry the second indication information, i.e., the second indication information may be carried by the don't care bit.

Optionally, at least one bit may be selected from a position where the second indication information is not carried in B25 of { U-SIG-1, B2 and B8 of U-SIG-2, B20-B24 of U-SIG-1, or B13-B16 of EHT-SIG }, so as to indicate that the first PPDU is aggregated in the a-PPDU.

For example, at least one bit (e.g., 1) of { B25 of U-SIG-1, B2 of U-SIG-2, B8 of U-SIG-2 } may be defined as being an A-PPDU, which is a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. In this way, the aggregation of the first PPDU in the A-PPDU is indicated by at least one bit (confirmation bit), and for the first type device, when receiving the A-PPDU, the first type device can stop receiving the A-PPDU in time because the at least one bit (confirmation bit) is not equal to a default value, thereby saving power consumption and ensuring normal receiving of other devices.

As another example, at least one bit (e.g., 1) of { B20-B24 of U-SIG-1, B13-B16 of EHT-SIG } that does not carry the second indication information may be defined as being an A-PPDU or not, which is a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. In this way, the a-PPDU may be sent to both the first type device and the second type device by at least one bit (don't care bit) indicating that the first PPDU is aggregated in the a-PPDU, wherein the at least one bit may be ignored for the first type device and may be handled as in the case of a single PPDU even if the first type device receives the a-PPDU. While the second predetermined length is 1 bit, it is understood that the second predetermined length (L2 bits) may be greater than 1 bit. And, in an example where the second preset length is greater than 1 bit, all of the L2 bits are confirmed bits, or all of the L2 bits are don't care bits, or a part of the L2 bits are confirmed bits and another part of the L2 bits are don't care bits. It should be understood that all bits in the L2 bits mentioned herein are confirmation bits, which means that the positions carried by all bits in the L2 bits are confirmation bits, and the same usage in this disclosure is the same, and is not described again.

In some examples, the granularity of the bandwidth when aggregation is performed is assumed to be 20MHz. In this example, the second preset length may be 3 bits or 4 bits. It should be understood that, in this example, the second preset length may be other values, such as 2 bits, 5 bits, etc., which the present disclosure does not limit.

For example, taking the second preset length as 3 bits, a "0" may be used to represent the total bandwidth of 40MHz, "1" represents the total bandwidth of 80MHz, "2" represents the total bandwidth of 120MHz, "3" represents the total bandwidth of 160MHz, and "4" represents the total bandwidth of 320MHz. For example, taking the second preset length of 4 bits as an example, 0 may be used to represent the total bandwidth of 20MHz, 1 may be used to represent the total bandwidth of 40MHz, 2 may be used to represent the total bandwidth of 60MHz,3 may be used to represent the total bandwidth of 80MHz, 4 may be used to represent the total bandwidth of 100MHz, \ 8230, and 15 may be used to represent the total bandwidth of 320MHz.

Similar to the above example, in the example with granularity of 20MHz, all bits in the second preset length (L2 bits) are confirmed bits, or all bits in the L2 bits are don't care bits, or a part of the L2 bits are confirmed bits and another part of the L2 bits are don't care bits. In addition, whether the first PPDU is aggregated in the a-PPDU may also be indicated by at least one bit (a confirm bit or a don't care bit). For specific description, reference may be made to the above examples, and details are not repeated here to avoid repetition.

It is understood that the particle size at which polymerization is carried out in the present disclosure may also be other values, such as 40MHz, and the like. Therefore, in the embodiment of the present disclosure, different second preset lengths may be defined for different granularities, so that the second indication information can be fully indicated while avoiding occupying too many bits, thereby achieving a tradeoff between the two and ensuring optimal utilization of resources.

Fig. 9 shows a schematic diagram of a format 900 of an a-PPDU provided by an embodiment of the present disclosure. In the format 900 of FIG. 9, the A-PPDU consists of 3 sub-PPDUs, PPDU 910, PPDU 920, and PPDU 930, respectively. In the format 900, the type of PPDU 910 is HE MU PPDU. The type of

PPDUs

920 and 930 is EHT MU PPDU.

In format 900, the format of PPDU 910 is similar to format 300 of fig. 3, described above. The formats of PPDU 920 and PPDU 930 are similar to format 400 of fig. 4, described above, but are not identical to format 400. The U-SIG field of PPDU 920 indicates that the bandwidth of PPDU 920 is 80mhz and the bandwidth of a-PPDU 900 is 320MHz by "BW =80MHz and a-BW =320 MHz". The U-SIG field of PPDU 930 indicates, by "BW =160MHz and A-BW =320MHz", that the bandwidth of PPDU 930 is 160MHz and that of A-PPDU 900 is 320MHz. It is understood that "a-BW =320MHz" in PPDU 920 and PPDU 930 may be carried in some or all of { B25 of U-SIG-1, B2 and B8 of U-SIG-2, B20-B24 of U-SIG-1, B13-B16 of EHT-SIG }.

It should be understood that fig. 9 is merely illustrative, and may include a lesser number of PPDUs, such as any two of PPDU 910, PPDU 920 and PPDU 930, for example. In addition, part or all of the EHT MU PPDU types in fig. 9 may be replaced with EHT + MU PPDU or EHT + + MU PPDU, or the like. The present disclosure is not limited thereto.

In the above embodiments, the second indication information is carried in the don't care and/or validation bits of the U-SIG and/or the EHT-SIG. Optionally, in other embodiments, the second indication information may also be carried in the negligence and/or confirmation status of the U-SIG and/or the EHT-SIG of the first PPDU. In some examples, the second indication information may be carried by a validation state of a BW field of the U-SIG. In other examples, the second indication information may be carried by a validation state of a version indication field of the U-SIG. And will not be described in detail herein.

By the embodiment, the first indication information of the bandwidth of the first PPDU and the second indication information of the total bandwidth of the a-PPDU are included in the first PPDU at the same time, so that a device (such as a receiving device or a third-party device) receiving the first PPDU can perform optimization of spatial multiplexing operation for the a-PPDU, for example, perform spatial multiplexing transmission within the entire a-PPDU bandwidth. For a third party device receiving the first PPDU, it may keep silent (not transmit) with reference to the total bandwidth or perform spatial multiplexing transmission without causing excessive interference to the current transmission. In addition, the receiving device can also perform some out-of-band interference suppression and the like according to the total bandwidth of the A-PPDU and the first PPDU bandwidth, thereby enhancing the receiving.

In other embodiments, the first PPDU includes first indication information and second indication information. The second indication information may be carried in a first signaling field of the first PPDU, and the first indication information may be carried in the first signaling field and/or the second signaling field of the first PPDU. In some examples, the first signaling field may be a U-SIG 405 as shown in fig. 4 and the second signaling field may be an EHT-SIG 406 as shown in fig. 4.

In the embodiment of the present disclosure, the second indication information is carried in a first signaling field of the first PPDU, which may refer to: the second indication information is carried in a bandwidth field (BW) of the U-SIG of the first PPDU, that is, the second indication information may occupy at least one bit of 4 th to 6 th bits (B3-B5) of a first symbol (U-SIG-1) of the U-SIG, and the B3-B5 field of the U-SIG-1 is used to indicate a total bandwidth of the a-PPDU.

Illustratively, the second indication information may have a third preset length, which may be denoted as L3.

In some examples, it is assumed that the granularity of the bandwidth when performing the aggregation is 80MHz. In this example, the third preset length may be 1 bit or 2 bits or 3 bits. Taking the third preset length of 1 bit as an example, a "0" may be used to represent the total bandwidth of 160MHz, and a "1" represents the total bandwidth of 320MHz. Taking the third preset length of 2 bits or 3 bits as an example, a "0" may be used to represent the total bandwidth of 160MHz, a "1" may be used to represent the total bandwidth of 320MHz-1, a "2" may be used to represent the total bandwidth of 320MHz-2, and the rest may be confirmed or ignored.

In other examples, the third predetermined length may be 3 bits, located in B3-B5 of U-SIG-1. Illustratively, "3" may be used to represent the total bandwidth of 160MHz, "4" to represent the total bandwidth of 320MHz-1, "5" to represent the total bandwidth of 320MHz-2, and the rest may be confirmed or ignored. Thus, the existing regulations on B3-B5 of the U-SIG-1 can be fully utilized, and the change of the existing standard can be reduced as much as possible.

It is understood that the granularity of the bandwidth at the time of polymerization can also be other values, such as 20MHz or 40MHz, etc. The granularity of 80MHz is similar to that described above and will not be described further herein. And the above given is only an example, the third preset length may be other values, for example, 4 bits, or more bits, etc.

In an embodiment of the present disclosure, the first indication information may be carried in a first signaling field and/or a second signaling field of the first PPDU, and may refer to: part or all of the first indication information may be carried in the first signaling field or the second signaling field of the first PPDU. Specifically, at least three situations can be included: the first indication information is carried in the first signaling field (1), the first indication information is carried in the second signaling field (2), and a part of the first indication information is carried in the first signaling field and another part of the first indication information is carried in the second signaling field (3).

Illustratively, the first indication information may be carried in the negotiable and/or confirmatory bits of the U-SIG and/or the EHT-SIG of the first PPDU. In some examples, the first indication information may be located in part or all of: a 26 th bit (B25) of a first symbol (U-SIG-1) of the U-SIG field, a3 rd bit (B2) of a second symbol (U-SIG-2) of the U-SIG field, a 9 th bit (B8) of the U-SIG-2, a 21 st to 25 th bits (B20-B24) of the U-SIG-1, and B13-B16 of the EHT-SIG.

Exemplarily, the first indication information may have a fourth preset length, which may be denoted as L4. For example, the bandwidth in which L4 bits are defined as the first PPDU may be arbitrarily selected from { B25 of U-SIG-1, B2 and B8 of U-SIG-2, B20-B24 of U-SIG-1, B13-B16 of EHT-SIG }.

In some examples, it is assumed that the granularity of the bandwidth when aggregation is performed is 80MHz. In this example, the fourth preset length may be 1 bit or 2 bits. It should be understood that, in this example, the fourth preset length may be a larger value, such as 3 bits, 4 bits, etc., which the present disclosure does not limit.

Taking the fourth preset length of 1 bit as an example, it may adopt "0" to represent the bandwidth of 80MHz of the first PPDU, and "1" to represent the bandwidth of 160MHz of the first PPDU.

To simplify the description, the example is explained below with 1 bit as an example. Specifically, any one of bits B25 of { U-SIG-1, B2 and B8 of U-SIG-2, B20-B24 of U-SIG-1, and B13-B16 of EHT-SIG } may carry the first indication information, and "0" may be used to represent 80MHz and "1" may be used to represent 160MHz, respectively, of the bandwidth of the first PPDU.

For example, any one of the bits B25 of the { U-SIG-1, B2 of the U-SIG-2, and B8 of the U-SIG-2 } may be used to carry the first indication information, that is, the first indication information may be carried by the confirmation bit. In consideration of the characteristics of the confirmed bits, in this example, at least one bit may be further selected from a position where the first indication information is not carried in { B25 of U-SIG-1, B2 of U-SIG-2, B8 of U-SIG-2 } for indicating that the first PPDU is aggregated in the a-PPDU.

For example, B25 of U-SIG-1 may be defined as whether it is an A-PPDU, with B25 of U-SIG-1 being a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. And further indicating the bandwidth of the first PPDU through B2 of the U-SIG-2 and/or B8 of the U-SIG-2. As another example, B2 of U-SIG-2 may be defined as whether it is an A-PPDU, which is a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. And further indicating the bandwidth of the first PPDU by B25 of the U-SIG-1 and/or B8 of the U-SIG-2. As another example, B8 of U-SIG-2 may be defined as whether it is an A-PPDU, which is a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. And further indicating the bandwidth of the first PPDU through B25 of the U-SIG-1 and/or B2 of the U-SIG-2. It should be noted that the above examples are not exhaustive, e.g. two bits may be used to define whether it is an a-PPDU, one bit to carry the first indication information, etc. Are not listed in this disclosure.

For another example, any one of the bits B20-B24 of the { U-SIG-1 and B13-B16 of the EHT-SIG } may be used to carry the first indication information, i.e., the first indication information may be carried by disregarding the bits.

Optionally, at least one bit may be selected from a position where the first indication information is not carried in { B25 of U-SIG-1, B2 and B8 of U-SIG-2, B20-B24 of U-SIG-1, B13-B16 of EHT-SIG }, so as to indicate that the first PPDU is aggregated in the a-PPDU.

For example, at least one bit (e.g., 1) of { B25 of U-SIG-1, B2 of U-SIG-2, B8 of U-SIG-2 } may be defined as being an A-PPDU, which is a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. In this way, the aggregation of the first PPDU in the A-PPDU is indicated by at least one bit (confirmation bit), and for the first type of equipment, when the first type of equipment receives the A-PPDU, the first type of equipment can stop receiving the A-PPDU in time because the at least one bit (confirmation bit) is not equal to a default value, so that the power consumption is saved, and the normal receiving of other equipment is ensured.

As another example, at least one bit (e.g., 1) of { B20-B24 of U-SIG-1, B13-B16 of EHT-SIG } that does not carry the first indication information may be defined as being an A-PPDU or not, which is a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. In this way, the a-PPDU may be sent to both the first type device and the second type device by at least one bit (don't care bit) indicating that the first PPDU is aggregated in the a-PPDU, wherein the at least one bit may be ignored for the first type device and may be handled as in the case of a single PPDU even if the first type device receives the a-PPDU.

While the fourth predetermined length is 1 bit, it is understood that the fourth predetermined length (L4 bits) may be greater than 1 bit. Also, in an example where the fourth preset length is greater than 1 bit, all of the L4 bits are confirmed bits, or all of the L4 bits are don't care bits, or a part of the L4 bits are confirmed bits and another part of the L4 bits are don't care bits.

In some examples, the granularity of the bandwidth when aggregation is performed is assumed to be 20MHz. In this example, the fourth preset length may be 2 bits or 3 bits. For example, 2 bits can be used, where "0" represents 20MHz, "1" represents 40MHz, "2" represents 80MHz, and "3" represents 160MHz. For example, 3 bits can be used, wherein "0" represents 20MHz, "1" represents 40MHz, "2" represents 80MHz, "3" represents 160MHz, and other values are used for confirmation.

Similar to the above example, in the example with granularity of 20MHz, all bits in the fourth preset length (L4 bits) are confirmed bits, or all bits in the L4 bits are don't care bits, or a part of the L4 bits are confirmed bits and another part of the L4 bits are don't care bits. In addition, whether the first PPDU is aggregated in the a-PPDU may also be indicated by at least one bit (an acknowledgement bit or a don't care bit). For the detailed description, reference may be made to the above examples, which are not repeated herein to avoid repetition.

It is understood that the particle size at which polymerization is carried out in the present disclosure may also be other values, such as 40MHz, and the like. Thus, in the embodiment of the present disclosure, for different granularities, different fourth preset lengths may be defined, so that the first indication information can be fully indicated while avoiding occupying too many bits, thereby achieving a tradeoff between the two and ensuring optimal utilization of resources.

Fig. 10 shows a schematic diagram of a format 1000 of an a-PPDU provided by an embodiment of the present disclosure. In the format 1000 of FIG. 10, the A-PPDU consists of 3 sub-PPDUs, PPDU 1010, PPDU 1020, PPDU 1030, respectively. In the format 1000, the type of PPDU 1010 is an HE MU PPDU. The type of PPDU 1020 and PPDU 1030 is an EHT MU PPDU.

In format 1000, the format of PPDU 1010 is similar to format 300 of fig. 3 described above. The formats of PPDU 1020 and PPDU 1030 are similar to format 400 described above in FIG. 4, but are not identical to format 400. The U-SIG field of PPDU 1020 indicates that the bandwidth of PPDU 1020 is 80MHz and the bandwidth of A-PPDU 1000 is 320MHz by "A-BW =320MHz and BW =80 MHz". The U-SIG field of PPDU 1030 indicates that the bandwidth of PPDU 1030 is 160MHz and the bandwidth of A-PPDU 1000 is 320MHz by "A-BW =320MHz and BW =160 MHz". It is understood that "a-BW =320MHz" of PPDU 1020 may be carried in B3-B5 of U-SIG-1 of PPDU 1020, and "BW =80MHz" may be carried in some or all of { B25 of U-SIG-1, B2 and B8 of U-SIG-2, B20-B24 of U-SIG-1, B13-B16 of EHT-SIG } of PPDU 1020. "a-BW =320MHz" in PPDU 1030 may be carried in B3-B5 of U-SIG-1 of PPDU 1030, and "BW =160MHz" may be carried in some or all of B25 of { U-SIG-1, B2 and B8 of U-SIG-2, B20-B24 of U-SIG-1, B13-B16 of EHT-SIG } of PPDU 1030.

It should be understood that fig. 10 is merely illustrative, and may include a lesser number of PPDUs, such as any two of PPDU 1010, PPDU 1020 and PPDU 1030, for example. In addition, the EHT MU PPDU type in fig. 10 may be replaced with an EHT + MU PPDU, an EHT + + MU PPDU, or the like. The present disclosure is not limited thereto.

In the above embodiments, the first indication information is carried in the don't care and/or the ack bit of the U-SIG and/or the EHT-SIG. Optionally, in other embodiments, the first indication information may also be carried in the negotiable and/or confirmatory status of the U-SIG and/or the EHT-SIG of the first PPDU. In some examples, the first indication information may be carried by a validation state of a BW field of the U-SIG. In other examples, the first indication information may be carried by a validation state of a version indication field of the U-SIG. And will not be described in detail herein.

By the embodiment, the first indication information of the bandwidth of the first PPDU and the second indication information of the total bandwidth of the a-PPDU are included in the first PPDU at the same time, so that a device (such as a receiving device or a third party device) receiving the first PPDU can perform optimization of spatial multiplexing operation for the a-PPDU, for example, spatial multiplexing transmission within the entire a-PPDU bandwidth. For a third party device receiving the first PPDU, it may keep silent (not transmit) with reference to the total bandwidth or perform spatial multiplexing transmission without causing excessive interference to the current transmission. In addition, the receiving device can also perform some out-of-band interference suppression and the like according to the total bandwidth of the A-PPDU, thereby enhancing the receiving.

Optionally, in this implementation manner, at 710, the method may further include: a Long Training Field (LTF) in the first PPDU is generated. It is understood that, in a scenario in which the type of the first PPDU is an EHT MU PPDU, the LTF may be an EHT-LTF.

Specifically, the LTF may be generated according to a bandwidth of the first PPDU and/or a total bandwidth of the A-PPDUs.

In some embodiments, it may be based on the firstThe bandwidth of the PPDU generates the LTF. Specifically, the LTF sequence may be constructed based on a bandwidth of the first PPDU. For example, when the bandwidth of the first PPDU is 20MHz, the corresponding LTF may be the first sequence, such as EHTLTF _{20MHz_1x} ，EHTLTF _{20MHz_2x} ，EHTLTF _{20MHz_4x} Any of the above. For example, when the bandwidth of the first PPDU is 40MHz, the corresponding LTF may be the second sequence, such as EHTLTF _{40MHz_1x} ，EHTLTF _{40MHz_2x} ，EHTLTF _{40MHz_4x} Any of them. For example, when the bandwidth of the first PPDU is 80MHz, the corresponding LTF may be a third sequence, such as EHTLTF _{80MHz_1x} ，EHTLTF _{80MHz_2x} ，EHTLTF _{80MHz_4x} Any of the above. For example, when the bandwidth of the first PPDU is 160MHz, the corresponding LTF may be the fourth sequence, such as EHTLTF _{160MHz_1x} ，EHTLTF _{160MHz_2x} ，EHTLTF _{160MHz_4x} Any of them. For example, when the bandwidth of the first PPDU is 320MHz, the corresponding LTF may be a fifth sequence, such as EHTLTF _{320MHz_1x} ，EHTLTF _{320MHz_2x} ，EHTLTF _{320MHz_4x} Any of them.

Thus, by generating LTFs by such embodiments, full utilization of currently existing sequences can be achieved, reducing the amount of improvement effort. The LTF of this embodiment is consistent with the reception of a single PPDU for the reception device, thereby enabling unification of reception of the LTF (channel estimation) by the second type device (device not implementing the EHT basic characteristic).

In some embodiments, the LTF may be generated based on a bandwidth of the first PPDU. Taking the granularity of 80MHz as an example, when the bandwidth of the first PPDU is 80MHz, the corresponding LTF may be the sixth sequence, such as EHTLTF _{80MHz_1x} ，EHTLTF _{80MHz_2x} ，EHTLTF _{80MHz_4x} Either multiplied by a phase coefficient of +1 or-1. For example, when the bandwidth of the first PPDU is 160MHz, the corresponding LTF may be a seventh sequence, such as EHTLTF _{160MHz_1x} ，EHTLTF _{160MHz_2x} ，EHTLTF _{160MHz_4x} Either multiplied by a phase coefficient of +1 or-1.

Thus, by generating the LTF according to such an embodiment, on one hand, the existing sequence can be fully utilized, and on the other hand, the existing sequence can be further optimally designed, for example, multiplied by a phase coefficient of +1 or-1, so that for the receiving device, the PAPR can be further optimized when performing subsequent processing such as channel estimation.

In some embodiments, the LTF may be generated based on a total bandwidth of the A-PPDU. Specifically, the LTF sequence may be constructed based on the total bandwidth of the A-PPDU. For example, when the total bandwidth of the A-PPDU is 160MHz, the corresponding LTF may be the first total sequence, such as EHTLTF _{sub160MHz_1x} ，EHTLTF _{sub160MHz_2x} ，EHTLTF _{sub160MHz_4x} Any of them. For example, when the total bandwidth of the A-PPDU is 320MHz, the corresponding LTF may be a second total sequence, such as EHTLTF _{sub320MHz_1x} ，EHTLTF _{sub320MHz_2x} ，EHTLTF _{sub320MHz_4x} Any of the above.

Thus, with such an embodiment to generate LTFs, the receiving device, upon receiving the a-PPDU, can optimize PAPR for the aggregated bandwidth (i.e., the total bandwidth of the a-PPDU) upon channel estimation or the like. Moreover, in combination with the above-described embodiment in which the second indication information is carried in B3-B5 of the U-SIG-1, transparency to the first-class device (device that implements the basic characteristics of EHT) can be achieved. It is also understood that in this case, the transmission of the content in the EHT-SIG is also required to be designed according to the aggregation bandwidth (i.e. the total bandwidth of the a-PPDU), for example, the number of the resource unit allocation sub-fields is selected according to the aggregation bandwidth, and the specific form is not elaborated in this disclosure.

In some embodiments, the LTF may be generated based on a total bandwidth of the A-PPDUs and a type of each of the A-PPDUs. Thus, the generation of the LTF further considers the type of each PPDU, and the LTF can be optimized and the PAPR can be further reduced based on the optimized LTF

Taking granularity of 80MHz as an example, the LTFs may be generated based on the total bandwidth of the a-PPDUs and the type of PPDU within each 80MHz, for example.

In some examples, the type of PPDU per 80MHz may be predefined. For example, one and only one HE MU PPDU in the a-PPDU may be specified, and the HE MU PPDU must be located on the primary 80MHz or primary 160MHz channel, then the type of PPDU within each 80MHz may be directly known based on the specification.

In some examples, the type of PPDU within a portion 80MHz may be predefined. For example, it may be specified that there is at most only one HE MU PPDU (0 or 1) of the a-PPDUs, and that the HE MU PPDU must be located on the primary 80MHz or primary 160MHz channel, then it may be directly indicated by a first preset number of bits whether it is on the primary 80MHz or primary 160MHz channel.

In some examples, one or more types of PPDUs within 80MHz may be predefined, with the remaining types of PPDUs within 80MHz being indicated by a second preset number of bits. As an example, PPDU types within 160MHz may be predefined as non-HE, such as EHT, EHT + +, and the like. Further, 2 bits (a second predetermined number of bits) may be used to indicate the type of PPDU in two 80MHz of the primary 160MHz, each bit may be 0 or 1,0 indicating that the type of PPDU is HE (e.g., HE MU PPDU), and 1 indicating that the type of PPDU is EHT (e.g., EHT MU PPDU).

As such, in the above example, if the PPDU being aggregate transmitted includes HE MU PPDU, the HE MU PPDU may be transmitted on a primary 80MHz (or primary 160 MHz) channel and the EHT MU PPDU may be transmitted on a secondary 80MHz (or secondary 160 MHz) channel, which may enable more efficient use of the spectrum.

In some examples, the type of PPDU within each 80MHz may be indicated by a third preset length bit number. As an example, 4 bits (third preset number of bits) may be used, corresponding to 480MHz, where each bit may be 0 or 1,0 indicates that the type of PPDU is HE (e.g., HE MU PPDU), and 1 indicates that the type of PPDU is EHT (e.g., EHT MU PPDU).

It should be noted that the LTFs described above are merely illustrative, and that LTFs (e.g., EHT-LTFs) are made up of a series of 1, -1, 0. The construction (constraint) process of the LTF is not limited in the embodiments of the present disclosure.

In this way, the LTF can be generated based on the bandwidth of the first PPDU and/or the total bandwidth of the a-PPDU in the disclosed embodiments, which enables optimization of the LTF, so that the receiving device can further reduce the PAPR based thereon.

Through the implementation manner described above, the first indication information of the bandwidth of the first PPDU and the second indication information of the total bandwidth of the a-PPDU are included in the first PPDU at the same time, so that a device (e.g., a receiving device or a third party device) receiving the first PPDU can perform optimization of spatial multiplexing operation for the a-PPDU, such as spatial multiplexing transmission within the entire a-PPDU bandwidth. For a third party device receiving the first PPDU, it may keep silent (not transmit) with reference to the total bandwidth or perform spatial multiplexing transmission without causing excessive interference to the current transmission. In addition, the receiving device can also perform some out-of-band interference suppression and the like according to the total bandwidth of the A-PPDU, thereby enhancing the receiving. Further, generating the LTF based on the bandwidth of the single PPDU and/or the total bandwidth of the a-PPDU enables optimization of the LTF so that the receiving device can further reduce the PAPR based thereon.

In yet another implementation, the first PPDU includes first indication information and third indication information. The first indication information is used for indicating the bandwidth of the first PPDU, and the third indication information is used for indicating the bandwidth combination of the A-PPDU.

In an embodiment of the present disclosure, the bandwidth combination may include at least two bandwidth values, one-to-one corresponding to at least two PPDUs of the a-PPDUs. For example, assuming that the a-PPDU includes N PPDUs, the bandwidth combination may include N bandwidth values. Illustratively, each bandwidth in the bandwidth combination may correspond to each PPDU in ascending or descending frequency order.

It can be understood that the sum of the individual bandwidths in the bandwidth combination is the total bandwidth of the a-PPDU. In other words, in this implementation, the third indication information implicitly indicates the total bandwidth of the a-PPDU. That is, the first PPDU includes a bandwidth of the first PPDU and a total bandwidth of the a-PPDU, wherein the bandwidth of the first PPDU is indicated by the first indication information display, and wherein the total bandwidth of the a-PPDU is implicitly indicated by the third indication information.

In some embodiments:

the first indication information may be carried in a first signaling field of the first PPDU, and the third indication information may be carried in the first signaling field and/or the second signaling field of the first PPDU. In some examples, the first signaling field may be a U-SIG 405 as shown in fig. 4 and the second signaling field may be an EHT-SIG 406 as shown in fig. 4.

In the embodiment of the present disclosure, the first indication information is carried in a first signaling field of the first PPDU, which may refer to: the first indication information is carried in a bandwidth field (BW) of the U-SIG of the first PPDU, that is, the first indication information may occupy at least one bit from a 4 th bit to a 6 th bit (B3-B5) of a first symbol (U-SIG-1) of the U-SIG.

Illustratively, the first indication information may have a first preset length, which may be denoted as L1.

In some examples, the granularity of the bandwidth when aggregation is performed is assumed to be 20MHz. In this example, the first preset length may be 3 bits. The B3-B5 bits (3 bits in length) of the U-SIG-1 may be confirmed by "0" for 20MHz, "1" for 40MHz, "2" for 80MHz, "3" for 160MHz, "4" for 320MHz-1, "5" for 320MHz-2, and others. That is, the first indication information is "0" - "5" in the bandwidth field of the U-SIG-1, which in turn means that the bandwidth of the first PPDU is 20MHz,40MHz,80MHz,160MHz,320MHz-1, 320MHz-2.

In some examples, the granularity of the bandwidth when aggregation is performed is assumed to be 40MHz. In this example, the first preset length may be 2 bits or 3 bits. Taking 2 bits as an example, any two bits of the B3-B5 bits of the U-SIG-1 may carry the first indication information, and may use "0" for 40MHz, "1" for 80MHz, "2" for 160MHz, and other values for confirmation. That is, the first indication information is "0" - "2" in the bandwidth field of the U-SIG-1, which in turn indicates that the bandwidth of the first PPDU is 40mhz,80mhz,160mhz.

In some examples, it is assumed that the granularity of the bandwidth when performing the aggregation is 80MHz. In this example, the first preset length may be 1 bit or 2 bits. Taking 1 bit as an example, any one of the B3-B5 bits of the U-SIG-1 may carry the first indication information, and "0" may be used to represent 80MHz, and "1" may be used to represent 160MHz. That is, the first indication information is "0" - "1" in the bandwidth field of the U-SIG-1, which in turn indicates that the bandwidth of the first PPDU is 80mhz,160mhz.

It is understood that this is only an example, and the first preset length may be other values, or the bandwidth of the first PPDU may be indicated in other manners in the bandwidth field of the U-SIG-1, and so on, which is not limited by this disclosure. Alternatively, if the bandwidth of a single PPDU can be extended to 320MHz or 640MHz or other values, the first preset length can be set to other values, such as 4 bits, etc.

In an embodiment of the present disclosure, the third indication information may be carried in the first signaling field and/or the second signaling field of the first PPDU, and may refer to: part or all of the third indication information may be carried in the first signaling field or the second signaling field of the first PPDU. Specifically, at least three cases may be included: the first signaling field carries all the third indication information, (2) the second signaling field carries all the third indication information, and (3) one part of the third indication information is carried in the first signaling field and the other part of the third indication information is carried in the second signaling field.

Illustratively, the third indication information may be carried in the negotiable and/or confirmatory bits of the U-SIG and/or the EHT-SIG of the first PPDU. In some examples, the third indication information may be located in part or all of: a 26 th bit (B25) of a first symbol (U-SIG-1) of the U-SIG field, a3 rd bit (B2) of a second symbol (U-SIG-2) of the U-SIG field, a 9 th bit (B8) of the U-SIG-2, a 21 st to 25 th bits (B20-B24) of the U-SIG-1, and a U-SIG overflow portion (B13-B16) of the EHT-SIG.

Exemplarily, the third indication information may have a fifth preset length, which may be denoted as L5. The fifth preset length may be at least one bit, for example, may be 1 bit or may be greater than 1 bit. For example, the bandwidth combination in which L5 bits are defined as an A-PPDU can be arbitrarily selected from { B25 of U-SIG-1, B2 and B8 of U-SIG-2, B20-B24 of U-SIG-1, and B13-B16 of EHT-SIG }.

In an embodiment of the present disclosure, the bandwidth combination may include at least two bandwidth values, one-to-one corresponding to at least two of the a-PPDUs. For example, assuming that the a-PPDU includes N PPDUs, the bandwidth combination may include N bandwidth values. Illustratively, each bandwidth in the bandwidth combination may correspond to each PPDU in ascending or descending frequency order.

In some examples, it is assumed that the granularity of the bandwidth when performing the aggregation is 80MHz. For example, if the fifth preset length is 3 bits, a "0" may be used to represent the bandwidth combination 80-80-80-80, a "1" may be used to represent the bandwidth combination 80-80-160, a "2" may be used to represent the bandwidth combination 160-80-80, a "3" may be used to represent the bandwidth combination 160-160, a "4" may be used to represent the bandwidth combination 80-80, and the rest may be confirmed or not be justified, and the bandwidths in the bandwidth combination are arranged from low to high according to frequency. In other examples, the granularity of the bandwidth for aggregation may be 20MHz or 40MHz, in which case the fifth preset length may be larger, such as 6 bits or other values, which may correspond to more bandwidth combinations.

For example, at least one bit of B25 of { U-SIG-1, B2 of U-SIG-2, and B8 of U-SIG-2 } may be used to carry the third indication information, i.e., the third indication information may be carried by a confirmation bit, i.e., all of the L5 bits are confirmation bits. In some examples, at least one bit may be further selected from a location { B25 of U-SIG-1, B2 of U-SIG-2, B8 of U-SIG-2 } that does not carry the third indication information to indicate that the first PPDU is aggregated in the a-PPDU, in view of the characteristics of the acknowledgement bits. In other examples, the first PPDU may also be indicated to be aggregated in the a-PPDU by at least one bit carrying the third indication information. In this example, the third indication information may be used to indicate a bandwidth combination and also to indicate a transmission manner of the first PPDU. For example, a first part of bits of the third indication information is used to indicate a bandwidth combination, and a second part of bits (at least one bit) of the third indication information is used to indicate that the first PPDU is aggregated in the a-PPDU. For another example, at least one bit for carrying the third indication information is a default value to indicate that the first PPDU is a separate PPDU, and at least one bit for carrying the third indication information is a non-default value to indicate the third indication information. That is, if at least one bit carrying the third indication information is a non-default value, it may be indirectly indicated that the transmission manner of the first PPDU is aggregated in the a-PPDU, while the non-default value indicates a bandwidth combination.

For example, B25 of U-SIG-1 may be defined as whether it is an A-PPDU, with B25 of U-SIG-1 being a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. The bandwidth combination is further indicated by B2 of the U-SIG-2 and/or B8 of the U-SIG-2. As another example, B2 of U-SIG-2 may be defined as whether it is an A-PPDU, which is a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. The bandwidth combination is further indicated by B25 of U-SIG-1 and/or B8 of U-SIG-2. As another example, B8 of U-SIG-2 may be defined as whether it is an A-PPDU, which is a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. The bandwidth combination is further indicated by B25 of U-SIG-1 and/or B2 of U-SIG-2. It should be noted that the above examples are not exhaustive, e.g. two bits may be used to define whether it is an a-PPDU, one bit may be used to carry the third indication information, etc. Are not listed in this disclosure.

In this way, the aggregation of the first PPDU in the A-PPDU is indicated by at least one bit (confirmation bit), and for the first type of equipment, when the first type of equipment receives the A-PPDU, the A-PPDU reception can be stopped in time due to the fact that the confirmation bit is not equal to the default value, so that the power consumption is saved, and the normal reception of other equipment is ensured.

For another example, at least one bit of B20-B24 of U-SIG-1 and B13-B16 of EHT-SIG may be used to carry the third indication information, i.e., the third indication information may be carried by a don't care bit, i.e., all of the L5 bits are don't care bits.

Optionally, at least one bit may be selected from a position where the third indication information is not carried in { B25 of U-SIG-1, B2 and B8 of U-SIG-2, B20-B24 of U-SIG-1, B13-B16 of EHT-SIG }, so as to indicate that the first PPDU is aggregated in the a-PPDU.

For example, at least one bit (e.g., 1) of B25 of { U-SIG-1, B2 of U-SIG-2, B8 of U-SIG-2 } may be defined as being an A-PPDU, which is a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. In this way, the aggregation of the first PPDU in the A-PPDU is indicated by at least one bit (confirmation bit), and for the first type of equipment, when the first type of equipment receives the A-PPDU, the first type of equipment can stop receiving the A-PPDU in time because the at least one bit (confirmation bit) is not equal to a default value, so that the power consumption is saved, and the normal receiving of other equipment is ensured.

As another example, at least one bit (e.g., 1) of { B20-B24 of U-SIG-1, B13-B16 of EHT-SIG } that does not carry the third indication information may be defined as being an A-PPDU or not, which is a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. Thus, by indicating that the first PPDU is aggregated in the a-PPDU by at least one bit (don't care bit), which is ignored for the first type of device, the a-PPDU may be simultaneously transmitted to the first type of device and the second type of device, and even if the first type of device receives the a-PPDU, it may be handled as a single PPDU.

For another example, the fifth preset length (L5) is greater than or equal to 2 bits, in this example, part of the bits of the third indication information are located in B25 of { U-SIG-1, B2 of U-SIG-2, B8 of U-SIG-2 }, and the other part of the bits are located in B20-B24 of { U-SIG-1, B13-B16 of EHT-SIG }. That is, a part of the L5 bits are confirmation bits and another part of the bits are don't care bits.

Fig. 11 shows a schematic diagram of a format 1100 of an a-PPDU provided by an embodiment of the present disclosure. In the format 1100 of FIG. 11, the A-PPDU consists of 3 sub-PPDUs, PPDU 1110, PPDU 1120, and PPDU 1130, respectively. In format 1100, PPDU 1110, PPDU 1120, and PPDU 1130 are all EHT MU PPDUs.

In format 1100, the formats of PPDU 1110, PPDU 1120, and PPDU 1130 are similar to format 400 described above in FIG. 4, but are not identical to format 400. The U-SIG field of PPDU 1110, indicates by "BW =80MHz and 80-80-160" that the bandwidth of PPDU 1110 is 80MHz and the bandwidth combination of A-PPDU 1100 is 80-80-160. The U-SIG field of PPDU 1120 indicates that the bandwidth of PPDU 1120 is 80MHz by "BW =80MHz and 80-80-160" and the bandwidth combination of A-PPDU 1000 is 80-80-160. The U-SIG field of PPDU 1130, indicates by "BW =160MHz and 80-80-160" that the bandwidth of PPDU 1130 is 160MHz and the bandwidth combination of A-PPDU 1100 is 80-80-160.

It is understood that "BW =80MHz" in PPDU 1110, "BW =80MHz" in PPDU 1120, and "BW =160MHz" in PPDU 1130 may be carried in part or all of B3-B5 of U-SIG-1. "80-80-160" in PPDU 1110, PPDU 1120, and PPDU 1130 may be carried in part or all of { B25 of U-SIG-1, B2 and B8 of U-SIG-2, B20-B24 of U-SIG-1 }.

It should be understood that fig. 11 is merely illustrative, and may include a lesser number of PPDUs, such as any two of PPDU 1110, PPDU 1120 and PPDU 1130, for example. In addition, the EHT MU PPDU type in fig. 11 may be replaced with an HE MU PPDU, an EHT + + MU PPDU, or the like. The present disclosure is not limited thereto.

Additionally, it should be understood that although the bandwidth combination "80-80-160" is shown in fig. 11 to be carried by the U-SIG, the present disclosure is not so limited, and may be carried by the EH-SIG, for example; for example, a part of the signal can be carried by the U-SIG, and another part of the signal can be carried by the EH-SIG.

In the above embodiments, the third indication information is carried in the don't care and/or the ack bit of the U-SIG and/or the EHT-SIG. Optionally, in other embodiments, the third indication information may also be carried in the negotiable and/or confirmatory status of the U-SIG and/or the EHT-SIG of the first PPDU. In some examples, the third indication information may be carried by a validation state of a BW field of the U-SIG. In other examples, the third indication information may be carried by a validation state of a version indication field of the U-SIG. And will not be described in detail herein.

By the embodiment, the first indication information of the bandwidth of the first PPDU and the third indication information of the bandwidth combination of the a-PPDU are included in the first PPDU at the same time, so that a device (such as a receiving device or a third playing device) receiving the first PPDU can acquire not only the bandwidth of the first PPDU but also the total bandwidth of the a-PPDU and the bandwidths of other PPDUs in the a-PPDU at the same time. And the receiving device can better perform some out-of-band interference suppression and the like, thereby enhancing its reception. In addition, in this embodiment, the first indication information may be carried in all or part of B3-B5 of the U-SIG-1, so that the existing PPDU format can be fully utilized, and modification is simplified.

In other embodiments:

the third indication information may be carried in the first signaling field of the first PPDU, and the first indication information may be carried in the first signaling field and/or the second signaling field of the first PPDU. In some examples, the first signaling field may be U-SIG 405 as shown in fig. 4 and the second signaling field may be EHT-SIG 406 as shown in fig. 4.

In the embodiment of the present disclosure, the third indication information is carried in a first signaling field of the first PPDU, which may refer to: the third indication information is carried in a bandwidth field (BW) of the U-SIG of the first PPDU, that is, the third indication information may occupy at least one bit of 4 th to 6 th bits (B3-B5) of a first symbol (U-SIG-1) of the U-SIG. In this example, B3-B5 of U-SIG-1 may be redefined as a bandwidth combination of the A-PPDU.

Illustratively, the third indication information may occupy at least one bit, for example, may be 1 bit or may be greater than 1 bit. For example, at least one bit of the information may be arbitrarily selected from B3-B5 of the U-SIG-1 to carry the third indication information, which is used to indicate the bandwidth combination of the a-PPDU.

In some examples, it is assumed that the granularity of the bandwidth when aggregation is performed is 80MHz. Taking the third indication information occupying 3 bits (B3-B5) as an example, it may adopt "0" to represent the bandwidth combination 80-80-80-80, "1" to represent the bandwidth combination 80-80-160, "2" to represent the bandwidth combination 160-80-80, "3" to represent the bandwidth combination 160-160, "4" to represent the bandwidth combination 80-80, and the rest is confirmed or unreasonable, and the bandwidths in the bandwidth combination are arranged from low to high according to frequency.

In other examples, the granularity of the bandwidth for aggregation may be 20MHz or 40MHz, in which case the third indication information may occupy a larger number of bits, such as 6 bits or the like, or other values, which may correspond to more bandwidth combinations. For example, the third indication information may occupy at least one bit of B3-B5 of U-SIG-1 and { -B25 of SIG-1, B2 of U-SIG-2, B8 of U-SIG-2, and B20-B24 of U-SIG-1, which are not listed in this disclosure one by one.

Illustratively, the first indication information may be carried in the negotiable and/or confirmatory bits of the U-SIG and/or the EHT-SIG of the first PPDU. In some examples, the first indication information may be located in part or all of: a 26 th bit (B25) of a first symbol (U-SIG-1) of the U-SIG field, a3 rd bit (B2) of a second symbol (U-SIG-2) of the U-SIG field, a 9 th bit (B8) of the U-SIG-2, a 21 st to 25 th bits (B20-B24) of the U-SIG-1, and a U-SIG overflow portion (B13-B16) of the EHT-SIG.

In some examples, it is assumed that the granularity of the bandwidth when performing the aggregation is 80MHz. In this example, the fourth preset length may be 1 bit or 2 bits. It should be understood that, in this example, the fourth preset length may be a larger value, such as 3 bits, 4 bits, etc., which the present disclosure does not limit.

Taking the fourth preset length of 1 bit as an example, a "0" may be used to represent the bandwidth of 80MHz of the first PPDU, and a "1" represents the bandwidth of 160MHz of the first PPDU.

To simplify the description, the example is explained below with 1 bit as an example. Specifically, any one of bits of { B25 of U-SIG-1, B2 and B8 of U-SIG-2, B20-B24 of U-SIG-1, and B13-B16 of EHT-SIG } may carry the first indication information, and "0" may be used to represent 80MHz of the bandwidth of the first PPDU, and "1" may be used to represent 160MHz of the bandwidth of the first PPDU.

For example, any one of the bits B25 of { U-SIG-1, B2 of U-SIG-2, and B8 of U-SIG-2 } may be used to carry the first indication information, that is, the first indication information may be carried by the confirmation bit. In consideration of the characteristics of the confirmation bits, in this example, at least one of the bits may also be selected from a position where the first indication information is not carried in B25 of { U-SIG-1, B2 of U-SIG-2, B8 of U-SIG-2 } for indicating that the first PPDU is aggregated in the a-PPDU.

For example, B25 of U-SIG-1 may be defined as whether it is an A-PPDU, with B25 of U-SIG-1 being a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. And further indicating the bandwidth of the first PPDU through B2 of the U-SIG-2 and/or B8 of the U-SIG-2. As another example, B2 of U-SIG-2 may be defined as whether it is an A-PPDU, which is a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. And further indicating the bandwidth of the first PPDU by B25 of the U-SIG-1 and/or B8 of the U-SIG-2. As another example, B8 of U-SIG-2 may be defined as whether it is an A-PPDU, which is a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. And further indicating the bandwidth of the first PPDU by B25 of the U-SIG-1 and/or B2 of the U-SIG-2. It should be noted that the above examples are not exhaustive, e.g. two bits may be used to define whether it is an a-PPDU, one bit may be used to carry the first indication information, etc. Are not listed in this disclosure.

Optionally, at least one bit may be selected from a position where the first indication information is not carried in B25 of { U-SIG-1, B2 and B8 of U-SIG-2, B20-B24 of U-SIG-1, or B13-B16 of EHT-SIG }, so as to indicate that the first PPDU is aggregated in the a-PPDU.

As another example, at least one bit (e.g., 1) of { B20-B24 of U-SIG-1, B13-B16 of EHT-SIG } that does not carry the first indication information may be defined as being an A-PPDU or not, which is a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. Thus, for a first type of device, it ignores the at least one bit, and even if the first type of device receives an a-PPDU, it will handle the case of a single PPDU.

While the fourth predetermined length is set to 1 bit, it is understood that the fourth predetermined length (L4 bits) may be greater than 1 bit. Also, in an example where the fourth preset length is greater than 1 bit, all of the L4 bits are confirmed bits, or all of the L4 bits are don't care bits, or a part of the L4 bits are confirmed bits and another part of the L4 bits are don't care bits.

Similar to the above example, in the example with granularity of 20MHz, all bits in the fourth preset length (L4 bits) are confirmed bits, or all bits in the L4 bits are don't care bits, or a part of the L4 bits are confirmed bits and another part of the L4 bits are don't care bits. In addition, whether the first PPDU is aggregated in the a-PPDU may also be indicated by at least one bit (an acknowledgement bit or a don't care bit). For specific description, reference may be made to the above examples, and details are not repeated here to avoid repetition.

It is understood that the particle size at which the polymerization is carried out in the present disclosure may also be other values, such as 40MHz, etc. Thus, in the embodiment of the present disclosure, for different granularities, different fourth preset lengths may be defined, so that the first indication information can be fully indicated while avoiding occupying too many bits, thereby achieving a tradeoff between the first indication information and the second indication information, and ensuring optimal utilization of resources.

By the embodiment, the first indication information of the bandwidth of the first PPDU and the third indication information of the bandwidth combination of the a-PPDU are included in the first PPDU at the same time, so that a device (such as a receiving device or a third playing device) receiving the first PPDU can acquire not only the bandwidth of the first PPDU but also the total bandwidth of the a-PPDU and the bandwidths of other PPDUs in the a-PPDU at the same time. And the receiving device can better perform some out-of-band interference suppression and the like, thereby enhancing its reception.

Optionally, in this implementation, 710 may further include: a Long Training Field (LTF) in the first PPDU is generated. It is understood that in a scenario where the type of the first DDPU is EHT MU PPDU, the LTF may be an EHT-LTF.

Specifically, the LTF may be generated according to at least one (one or more) of a bandwidth of the first PPDU, a total bandwidth of the A-PPDUs, and a combination of bandwidths of the A-PPDUs. In some examples, the type of each of the A-PPDUs may also be considered in generating the LTF.

In some embodiments, the LTF may be generated based on a bandwidth of the first PPDU. Specifically, the LTF sequence may be constructed based on a bandwidth of the first PPDU. For example, when the bandwidth of the first PPDU is 20MHz, the corresponding LTF may be the first sequence, such as EHTLTF _{20MHz_1x} ，EHTLTF _{20MHz_2x} ，EHTLTF _{20MHz_4x} Any of them. For example, when the bandwidth of the first PPDU is 40MHz, the corresponding LTF may be the second sequence, such as EHTLTF _{40MHz_1x} ，EHTLTF _{40MHz_2x} ，EHTLTF _{40MHz_4x} Any of them. For example, when the bandwidth of the first PPDU is 80MHz, the corresponding LTF may be a third sequence, such as EHTLTF _{80MHz_1x} ，EHTLTF _{80MHz_2x} ，EHTLTF _{80MHz_4x} Any of the above. For example, when the bandwidth of the first PPDU is 160MHz, the corresponding LTF may be the fourth sequence, such as EHTLTF _{160MHz_1x} ，EHTLTF _{160MHz_2x} ，EHTLTF _{160MHz_4x} Any of the above. For example, when the bandwidth of the first PPDU is 320MHz, the corresponding LTF may be the fifth sequence, such as EHTLTF _{320MHz_1x} ，EHTLTF _{320MHz_2x} ，EHTLTF _{320MHz_4x} Any of the above.

Thus, by generating LTFs by such an embodiment, full utilization of currently existing sequences can be achieved, reducing the amount of improvement effort. The LTF of this embodiment is consistent with the reception of a single PPDU for the receiving device, thereby enabling unification of reception of the LTF by the second type device (a device that does not implement the basic characteristics of EHT).

In some embodiments, the LTF may be generated based on a bandwidth of the first PPDU. Taking the granularity of 80MHz as an example, when the bandwidth of the first PPDU is 80MHz, the corresponding LTF may be the sixth sequence, such as EHTLTF _{80MHz_1x} ，EHTLTF _{80MHz_2x} ，EHTLTF _{80MHz_4x} Either multiplied by a phase coefficient of +1 or-1.For example, when the bandwidth of the first PPDU is 160MHz, the corresponding LTF may be a seventh sequence, such as EHTLTF _{160MHz_1x} ，EHTLTF _{160MHz_2x} ，EHTLTF _{160MHz_4x} Either multiplied by a phase coefficient of +1 or-1.

Thus, by generating the LTF according to the embodiment, on one hand, the existing sequence can be fully utilized, and on the other hand, the existing sequence can be further optimally designed, for example, multiplied by a phase coefficient of +1 or-1, so that for the receiving device, the PAPR can be further optimized when performing subsequent processing such as channel estimation.

In some embodiments, the LTF may be generated based on a total bandwidth of the A-PPDU. It can be understood that, since the third indication information indicates a bandwidth combination of the a-PPDUs, the bandwidth combination includes bandwidths of the respective PPDUs, and thus a sum of the respective bandwidths in the bandwidth combination is a total bandwidth of the a-PPDU. Specifically, the LTF sequence may be constructed based on the total bandwidth of the A-PPDU. For example, when the total bandwidth of the A-PPDU is 160MHz, the corresponding LTF may be the first total sequence, such as EHTLTF _{sub160MHz_1x} ，EHTLTF _{sub160MHz_2x} ，EHTLTF _{sub160MHz_4x} Any of them. For example, when the total bandwidth of the A-PPDU is 320MHz, the corresponding LTF may be a second total sequence, such as EHTLTF _{sub320MHz_1x} ，EHTLTF _{sub320MHz_2x} ，EHTLTF _{sub320MHz_4x} Any of them.

In this way, by generating the LTF by such an embodiment, the receiving apparatus can optimize the PAPR for the aggregated bandwidth (i.e., the total bandwidth of the a-PPDU) upon performing channel estimation or the like after receiving the a-PPDU.

In some embodiments, the LTF may be generated based on a total bandwidth of the A-PPDUs and a type of each of the A-PPDUs. Taking granularity of 80MHz as an example, the LTFs may be generated based on the total bandwidth of the a-PPDUs and the type of PPDU within each 80MHz, for example.

In some examples, the type of PPDU per 80MKHz may be predefined. For example, one and only one HE MU PPDU in the a-PPDU may be specified, and the HE MU PPDU must be located on the primary 80MHz or primary 160MHz channel, then the type of PPDU within each 80MHz may be directly known based on the specification.

In some examples, the type of PPDU in the portion 80mhz may be predefined. For example, it may be specified that there is at most only one HE MU PPDU (0 or 1) of the a-PPDUs, and that the HE MU PPDU must be located on the primary 80MHz or primary 160MHz channel, then it may be directly indicated by a first preset number of bits whether it is on the primary 80MHz or primary 160MHz channel.

In some examples, one or more of the types of PPDUs within 80MHz may be predefined, with the remaining types of PPDUs within 80MHz indicated by a second preset number of bits. As an example, PPDU types from within 160MHz may be predefined as non-HE, such as EHT, EHT + +, and the like. Further, 2 bits (a second predetermined number of bits) may be used to indicate the type of PPDU in two 80MHz of the primary 160MHz, each bit may be 0 or 1,0 indicating that the type of PPDU is HE (e.g., HE MU PPDU), and 1 indicating that the type of PPDU is EHT (e.g., EHT MU PPDU).

In some examples, the type of PPDU within each 80MHz may be indicated by a third preset length bit number. As an example, 4 bits (third predetermined number of bits) corresponding to 480MHz may be used, each bit may be 0 or 1,0 indicates that the type of PPDU is HE (e.g., HE MU PPDU), and 1 indicates that the type of PPDU is EHT (e.g., EHT MU PPDU).

In some embodiments, the LTFs may be generated based on a bandwidth combination of the a-PPDUs. For example, different LTF sequences may be constructed based on different bandwidth combinations. For example, bandwidth combination C1 corresponds to LTF sequence 1, bandwidth combination C2 corresponds to LTF sequence 2, and so on. For example, different LTF sequences may be generated by multiplying different +1 or-1 phase coefficients according to different bandwidth combinations. Therefore, the LTF can be generated based on bandwidth combination, so that the LTF sequence under each combination condition is optimal, the optimal selection of the LTF sequence is realized, and the PAPR can be further reduced.

In some embodiments, the LTF may be generated based on a bandwidth combination of the A-PPDUs and a type of each PPDU in the A-PPDU. For the indication manner of the type of each PPDU in the a-PPDU, the above description may be referred to, and details are not repeated here to avoid repetition.

As such, the LTF can be generated based on at least one (one or more) of the bandwidth of the first PPDU, the total bandwidth of the a-PPDU, and the bandwidth combination of the a-PPDU in the embodiment of the present disclosure, which enables optimization of the LTF, so that the receiving device can further reduce the PAPR based thereon.

Through the implementation manner described above, the first PPDU includes the first indication information of the bandwidth of the first PPDU and the third indication information of the bandwidth combination of the a-PPDU at the same time, so that a device (such as a receiving device or a third party device) receiving the first PPDU can acquire not only the bandwidth of the first PPDU but also the total bandwidth of the a-PPDU and the bandwidths of other PPDUs in the a-PPDU at the same time. And the device receiving the first PPDU can optimize the spatial multiplexing operation for the a-PPDU, such as spatial multiplexing transmission within the entire a-PPDU bandwidth. For a third party device receiving the first PPDU, it may keep silent (not transmit) with reference to the total bandwidth or perform spatial multiplexing transmission without causing excessive interference to the current transmission. In addition, the receiving device may also perform some out-of-band interference suppression, etc., based on the total bandwidth and/or bandwidth combination of the a-PPDU, thereby enhancing its reception. Further, generating the LTF based on at least one (one or more) of a bandwidth of a single PPDU, a total bandwidth of a-PPDU, and a bandwidth combination of a-PPDU enables optimization of the LTF, so that the receiving device can further reduce the PAPR based thereon.

In yet another implementation, the first PPDU may include the second indication information and the third indication information. The second indication information is used for indicating the total bandwidth of the A-PPDU, and the third indication information is used for indicating the bandwidth combination of the A-PPDU.

In an embodiment of the present disclosure, the bandwidth combination may include at least two bandwidth values, one-to-one corresponding to at least two PPDUs of the a-PPDUs. By way of example, assuming that the a-PPDU includes N PPDUs, the bandwidth combination may include N bandwidth values. Illustratively, each bandwidth in the bandwidth combination may correspond to each PPDU in ascending or descending frequency order.

In some embodiments:

the second indication information may be carried in the first signaling field of the first PPDU, and the third indication information may be carried in the first signaling field and/or the second signaling field of the first PPDU. In some examples, the first signaling field may be a U-SIG 405 as shown in fig. 4 and the second signaling field may be an EHT-SIG 406 as shown in fig. 4.

Exemplarily, the second indication information may have a third preset length, which may be denoted as L3.

In some examples, it is assumed that the granularity of the bandwidth when aggregation is performed is 80MHz. In this example, the third preset length may be 1 bit or 2 bits or 3 bits. Taking the third preset length of 1 bit as an example, 0 may be used to represent the total bandwidth of 160MHz, and 1 may represent the total bandwidth of 320MHz. Taking the third preset length of 2 bits or 3 bits as an example, a "0" may be used to represent the total bandwidth of 160MHz, a "1" represents the total bandwidth of 240MHz, a "2" represents the total bandwidth of 320MHz, and the rest is confirmed or ignored.

In other examples, the third predetermined length may be 3 bits, located in B3-B5 of U-SIG-1. Illustratively, "3" may be used to represent the total bandwidth of 160MHz, "4" to represent the total bandwidth of 320MHz-1, "5" to represent the total bandwidth of 320MHz-2, and the rest may be confirmed or disregarded. Thus, the existing regulations on B3-B5 of the U-SIG-1 can be fully utilized, and the change of the existing standard can be reduced as much as possible.

It is understood that the granularity of the bandwidth at the time of polymerization may also be other values, such as 20MHz or 40MHz, etc. The granularity of 80MHz is similar to that described above and will not be described further herein. And the above given is only an example, the third preset length may be other values, for example, 4 bits, or more bits, etc.

In this embodiment of the disclosure, the third indication information may be carried in the first signaling field and/or the second signaling field of the first PPDU, and may refer to: part or all of the third indication information may be carried in the first signaling field or the second signaling field of the first PPDU. Specifically, at least three situations can be included: the first signaling field carries all the third indication information, (2) the second signaling field carries all the third indication information, and (3) one part of the third indication information is carried in the first signaling field and the other part of the third indication information is carried in the second signaling field.

Illustratively, the third indication information may have a fifth preset length, which may be denoted as L5. The fifth preset length may be at least one bit, for example, may be 1 bit or may be greater than 1 bit. For example, the bandwidth combination in which L5 bits are defined as an A-PPDU can be arbitrarily selected from { B25 of U-SIG-1, B2 and B8 of U-SIG-2, B20-B24 of U-SIG-1, and B13-B16 of EHT-SIG }.

In an embodiment of the present disclosure, the bandwidth combination may include at least two bandwidth values, one-to-one corresponding to at least two of the a-PPDUs. By way of example, assuming that the a-PPDU includes N PPDUs, the bandwidth combination may include N bandwidth values. Illustratively, each bandwidth in the bandwidth combination may correspond to each PPDU in ascending or descending frequency order.

In some examples, it is assumed that the granularity of the bandwidth when aggregation is performed is 80MHz. For example, if the fifth predetermined length is 3 bits, a "0" may be used to represent the bandwidth combination 80-80-80-80, a "1" may be used to represent the bandwidth combination 80-80-160, a "2" may be used to represent the bandwidth combination 160-80-80, a "3" may be used to represent the bandwidth combination 160-160, a "4" may be used to represent the bandwidth combination 80-80, and the rest may be confirmed or ignored, and the bandwidths in the bandwidth combination are arranged from low to high according to frequency. It can be seen that "0" - "3" applies to the case where the total bandwidth is 320MHz, and "4" applies to the case where the total bandwidth is 160MHz. It is understood that this is merely illustrative and not restrictive, and for example, "0" or "1" may also be used to represent bandwidth combinations 80-80, rather than being indicated by "4" alone. In the latter case, since the total bandwidth has been indicated by the second indication information, it is possible for the receiving apparatus to know which bandwidth combination is based on the total bandwidth. If the total bandwidth is 160MHz, then it may be determined that "0" represents the bandwidth combination 80-80 instead of 80-80-80-80. Assuming that the total bandwidth is 320MHz, it can be determined that "1" represents the bandwidth combination 80-80-160 instead of 80-80. In this way, signaling overhead can be further reduced.

In some examples, the third indication information regarding the bandwidth combination may be combined with the second indication information. It is still assumed that the granularity of the bandwidth when polymerization is performed is 80MHz. For example, in the case where the second indication information indicates that the total bandwidth is 320MHz, "0" may be adopted to represent the bandwidth combination 80-80-80-80, "1" represents the bandwidth combination 80-80-160, "2" represents the bandwidth combination 160-80-80, and "3" represents the bandwidth combination 160-160. In the case where the second indication information indicates that the total bandwidth is 160MHz, "0" may be adopted to represent the bandwidth combinations 80-80. Thus, the receiving device that received the first PPDU can determine whether the third indication information "0" represents the bandwidth combination 80-80-80 or the bandwidth combination 80-80 based on the total bandwidth. In this way, signaling overhead can be further reduced. It is of course understood that in the case where the second indication information indicates that the total bandwidth is 160MHz, any one of "1" - "3" may also be used to represent the bandwidth combination 80-80, or "4" or other indications may also be used to represent the bandwidth combination 80-80. Embodiments of the present disclosure are not listed again.

In other examples, the granularity of the bandwidths in the aggregation may be 20MHz or 40MHz, in which case the fifth preset length may be larger, such as 6 bits or the like or other values, which can correspond to more bandwidth combinations.

For example, at least one bit of B25 of { U-SIG-1, B2 of U-SIG-2, and B8 of U-SIG-2 } may be used to carry the third indication information, i.e., the third indication information may be carried by a confirmation bit, i.e., all of the L5 bits are confirmation bits. In consideration of the characteristics of the confirmation bits, in this example, at least one of the bits may also be selected from a position where the third indication information is not carried in B25 of { U-SIG-1, B2 of U-SIG-2, B8 of U-SIG-2 } for indicating that the first PPDU is aggregated in the a-PPDU.

For example, B25 of U-SIG-1 may be defined as whether it is an A-PPDU, with B25 of U-SIG-1 being a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. The bandwidth combination is further indicated by B2 of the U-SIG-2 and/or B8 of the U-SIG-2. As another example, B2 of U-SIG-2 may be defined as whether it is an A-PPDU, which is a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. The bandwidth combination is further indicated by B25 of U-SIG-1 and/or B8 of U-SIG-2. As another example, B8 of U-SIG-2 may be defined as whether it is an A-PPDU, which is a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. The bandwidth combination is further indicated by B25 of U-SIG-1 and/or B2 of U-SIG-2. It should be noted that the above examples are not exhaustive, e.g. two bits may be used to define whether it is an a-PPDU, one bit to carry the third indication information, etc. Are not listed in this disclosure.

As another example, at least one bit (e.g., 1) of { B20-B24 of U-SIG-1, B13-B16 of EHT-SIG } that does not carry the third indication information may be defined as being an A-PPDU or not, which is a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. Thus, for a first type of device, it ignores the at least one bit, and even if the first type of device receives an a-PPDU, it will handle the case of a single PPDU.

For another example, the fifth predetermined length (L5) is greater than or equal to 2 bits, and in this example, part of the bits of the third indication information are located in B25 of { U-SIG-1, B2 of U-SIG-2, B8 of U-SIG-2 }, and the other part of the bits are located in B20-B24 of { U-SIG-1, B13-B16 of EHT-SIG }. That is, a part of the L5 bits are confirmation bits and another part of the bits are don't care bits.

Fig. 12 shows a schematic diagram of a format 1200 of an a-PPDU provided by an embodiment of the present disclosure. In the format 1200 of FIG. 12, the A-PPDU consists of 3 sub-PPDUs, PPDU 1210, PPDU 1220 and PPDU 1230, respectively. In format 1200, PPDU 1210, PPDU 1220 and PPDU 1230 are all EHT MU PPDU.

The format of PPDU 1210, PPDU 1220 and PPDU 1230 in format 1200 is similar to, but not identical to, format 400 described above in fig. 4. The respective U-SIG fields of PPDU 1210, PPDU 1220 and PPDU 1230 indicate by "A-BW =320MHz and 80-80-160" that the total bandwidth of A-PPDU 1200 is 320MHz and the bandwidth combination of A-PPDU 1200 is 80-80-160.

It is understood that "a-BW =320MHz" in PPDU 1210, PPDU 1220 and PPDU 1230 may be carried in part or all of B3-B5 of U-SIG-1. "80-80-160" in PPDU 1210, PPDU 1220 and PPDU 1230 may be carried in part or all of { B25 of U-SIG-1, B2 and B8 of U-SIG-2, B20-B24 of U-SIG-1 }.

It should be understood that fig. 12 is merely illustrative, and may include a lesser number of PPDUs, such as any two of

PPDUs

1210, 1220 and 1230, for example. In addition, the EHT MU PPDU type in fig. 12 may be replaced with HE MU PPDU, EHT + MU PPDU, or EHT + + MU PPDU, or the like. The present disclosure is not limited thereto.

Additionally, it should be understood that although the bandwidth combination "80-80-160" is shown in fig. 12 as being carried by the U-SIG, the present disclosure is not so limited, e.g., it may be carried by the EH-SIG; for example, a part of the signal can be carried by the U-SIG, and another part of the signal can be carried by the EH-SIG.

By the embodiment, the first PPDU simultaneously comprises the second indication information of the total bandwidth of the A-PPDU and the third indication information of the bandwidth combination of the A-PPDU, so that a device (such as a receiving device or a third playing device) receiving the first PPDU can acquire not only the total bandwidth of the A-PPDU but also the bandwidth of each PPDU in the A-PPDU. And the receiving device can better perform some out-of-band interference suppression and the like, thereby enhancing its reception. In addition, the second indication information in this embodiment may be carried in all or part of B3-B5 of the U-SIG-1, so that the existing PPDU format can be fully utilized, and modification is simplified.

In other embodiments:

the third indication information may be carried in the first signaling field of the first PPDU, and the second indication information may be carried in the first signaling field and/or the second signaling field of the first PPDU. In some examples, the first signaling field may be a U-SIG 405 as shown in fig. 4 and the second signaling field may be an EHT-SIG 406 as shown in fig. 4.

Illustratively, the third indication information may occupy at least one bit, for example, may be 1 bit or may be greater than 1 bit. For example, at least one bit of the third indication information may be arbitrarily selected from B3-B5 of U-SIG-1 to indicate the bandwidth combination of the a-PPDU.

In some examples, it is assumed that the granularity of the bandwidth when performing the aggregation is 80MHz. Taking the third indication information occupying 3 bits (B3-B5) as an example, it may adopt "0" to represent the bandwidth combination 80-80-80-80, "1" to represent the bandwidth combination 80-80-160, "2" to represent the bandwidth combination 160-80-80, "3" to represent the bandwidth combination 160-160, "4" to represent the bandwidth combination 80-80, and the rest is confirmation or negligence, and the bandwidths in the bandwidth combination are arranged from low to high according to frequency.

In other examples, the granularity of the bandwidth for aggregation may be 20MHz or 40MHz, in which case the third indication information may occupy a larger number of bits, such as 6 bits or the like, or other values, which may correspond to more bandwidth combinations. For example, the third indication information may occupy at least one bit of B3-B5 of U-SIG-1 and { -B25 of SIG-1, B2 of U-SIG-2, B8 of U-SIG-2, B20-B24 of U-SIG-1, which is not listed in this disclosure.

In the embodiment of the present disclosure, the second indication information may be carried in the first signaling field and/or the second signaling field of the first PPDU, and may refer to: part or all of the second indication information may be carried in the first signaling field or the second signaling field of the first PPDU. Specifically, at least three cases may be included: the first signaling field carries all the second indication information, (2) the second signaling field carries all the second indication information, and (3) one part of the second indication information is carried in the first signaling field and the other part of the second indication information is carried in the second signaling field.

Exemplarily, the second indication information may have a second preset length, which may be denoted as L2. For example, the total bandwidth, in which L2 bits are defined as the A-PPDU, may be arbitrarily selected from { B25 of U-SIG-1, B2 and B8 of U-SIG-2, B20-B24 of U-SIG-1, and B13-B16 of EHT-SIG }.

In some examples, it is assumed that the granularity of the bandwidth when performing the aggregation is 80MHz. In this example, the second preset length may be 1 bit or 2 bits. It should be understood that, in this example, the second preset length may be a larger value, such as 3 bits, 4 bits, etc., which the present disclosure does not limit.

For example, the second preset length is 1 bit, a "0" may be used to represent the total bandwidth of 160MHz, and a "1" may be used to represent the total bandwidth of 320MHz. For example, the second predetermined length is 2 bits, a "0" may be used to represent the total bandwidth of 160MHz, a "1" represents the total bandwidth of 240MHz, a "2" represents the total bandwidth of 320MHz, and the rest is verified or ignored.

For example, any one of the bits B25 of U-SIG-1, B2 of U-SIG-2, and B8 of U-SIG-2 may be used to carry the second indication information, i.e., the second indication information may be carried by the validation bit. In consideration of the characteristics of the confirmation bits, in this example, at least one bit may be further selected from a position where the second indication information is not carried in { B25 of U-SIG-1, B2 of U-SIG-2, B8 of U-SIG-2 } for indicating that the first PPDU is aggregated in the a-PPDU.

For example, B25 of U-SIG-1 may be defined as whether it is an A-PPDU, with B25 of U-SIG-1 being a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. And further indicating the total bandwidth of the A-PPDU by B2 of the U-SIG-2 and/or B8 of the U-SIG-2. As another example, B2 of U-SIG-2 may be defined as whether it is an A-PPDU, which is a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. The total bandwidth of the A-PPDU is further indicated by B25 of U-SIG-1 and/or B8 of U-SIG-2. As another example, B8 of U-SIG-2 may be defined as whether it is an A-PPDU, which is a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. The total bandwidth of the A-PPDU is further indicated by B25 of U-SIG-1 and/or B2 of U-SIG-2. It should be noted that the above examples are not exhaustive, e.g. two bits may be used to define whether it is an a-PPDU, one bit may be used to carry the second indication information, etc. Are not listed in this disclosure.

Optionally, at least one bit may be selected from a position where the second indication information is not carried in { B25 of U-SIG-1, B2 and B8 of U-SIG-2, B20-B24 of U-SIG-1, B13-B16 of EHT-SIG }, so as to indicate that the first PPDU is aggregated in the a-PPDU.

As another example, at least one bit (e.g., 1) of { B20-B24 of U-SIG-1, B13-B16 of EHT-SIG } that does not carry the second indication information may be defined as being an A-PPDU or not, which is a non-default value (e.g., 0) indicating that the first PPDU is part of an A-PPDU. Thus, for a first type device, it ignores the at least one bit, and even if the first type device receives an a-PPDU, it processes as if it were a single PPDU.

While the second predetermined length is 1 bit, it is understood that the second predetermined length (L2 bits) may be greater than 1 bit. And, in an example where the second preset length is greater than 1 bit, all of the L2 bits are confirmed bits, or all of the L2 bits are don't care bits, or a part of the L2 bits are confirmed bits and another part of the L2 bits are don't care bits.

In some examples, the granularity of the bandwidth when aggregation is performed is assumed to be 20MHz. In this example, the second preset length may be 3 bits or 4 bits. It should be understood that in this example, the second preset length may be other values, such as 2 bits, 5 bits, etc., which the present disclosure does not limit.

For example, if the second predetermined length is 3 bits, a "0" may be used to represent the total bandwidth of 40MHz, a "1" may be used to represent the total bandwidth of 80MHz, a "2" may be used to represent the total bandwidth of 120MHz, a "3" may be used to represent the total bandwidth of 160MHz, and a "4" may be used to represent the total bandwidth of 320MHz. For example, with a second preset length of 4 bits, a "0" may be used to represent 20MHz of the total bandwidth, a "1" represents 40MHz of the total bandwidth, a "2" represents 60MHz of the total bandwidth, a "3" represents 80MHz of the total bandwidth, a "4" represents 100MHz of the total bandwidth, \ 8230 ″, and a "15" represents 320MHz of the total bandwidth.

Similar to the above example, in the example with granularity of 20MHz, all bits in the second preset length (L2 bits) are confirmed bits, or all bits in the L2 bits are don't care bits, or a part of the L2 bits are confirmed bits and another part of the L2 bits are don't care bits. In addition, whether the first PPDU is aggregated in the a-PPDU may also be indicated by at least one bit (a confirm bit or a don't care bit). For the detailed description, reference may be made to the above examples, which are not repeated herein to avoid repetition.

By the embodiment, the first PPDU simultaneously comprises the second indication information of the total bandwidth of the A-PPDU and the third indication information of the bandwidth combination of the A-PPDU, so that a device (such as a receiving device or a third playing device) receiving the first PPDU can acquire not only the total bandwidth of the A-PPDU but also the bandwidths of other PPDUs in the A-PPDU. And the receiving device can better perform some out-of-band interference suppression and the like, thereby enhancing its reception.

Optionally, in this implementation, 710 may further include: a Long Training Field (LTF) in the first PPDU is generated. It is understood that in a scenario where the type of the first DDPU is EHT MU PPDU, the LTF may be an EHT LTF.

Specifically, the LTF may be generated based on a total bandwidth of the A-PPDU and/or a bandwidth combination of the A-PPDU. In some examples, the type of each of the A-PPDUs may also be considered in generating the LTF.

In some embodiments, the LTF may be generated based on a total bandwidth of the A-PPDU. Specifically, the LTF sequence may be constructed based on the total bandwidth of the A-PPDU. For example, when the total bandwidth of the A-PPDU is 160MHz, the corresponding LTF may be the first total sequence, such as EHTLTF _{sub160MHz_1x} ，EHTLTF _{sub160MHz_2x} ，EHTLTF _{sub160MHz_4x} Any of them. For example, when the total bandwidth of the A-PPDU is 320MHz, the corresponding LTF may be the second total sequence, such as EHTLTF _{sub320MHz_1x} ，EHTLTF _{sub320MHz_2x} ，EHTLTF _{sub320MHz_4x} Any of them.

In some examples, one or more types of PPDUs within 80MHz may be predefined, with the remaining types of PPDUs within 80MHz being indicated by a second preset number of bits. As an example, PPDU types within 160MHz may be predefined as non-HE, such as EHT, EHT + +, and the like. It is further possible to use 2 bits (second preset number of bits) for indicating the type of PPDU in two 80MHz of the primary 160MHz, where each bit may be 0 or 1,0 indicating that the type of PPDU is HE (e.g., HE MU PPDU) and 1 indicating that the type of PPDU is EHT (e.g., EHT MU PPDU).

In this way, the LTF can be generated based on the total bandwidth of the A-PPDU and/or the bandwidth combination of the A-PPDU in the embodiment of the disclosure, and the optimization of the LTF is realized, so that the receiving device can further reduce the PAPR based on the optimization.

Through the implementation manner described above, the first PPDU includes the second indication information of the total bandwidth of the a-PPDU and the third indication information of the bandwidth combination of the a-PPDU at the same time, so that a device (e.g., a receiving device or a third party device) that receives the first PPDU can not only know the total bandwidth of the a-PPDU, but also know the bandwidths of other PPDUs in the a-PPDU at the same time. And the device receiving the first PPDU can optimize the spatial multiplexing operation for the a-PPDU, such as spatial multiplexing transmission within the entire a-PPDU bandwidth. For a third party device receiving the first PPDU, it may keep silent (not transmit) with reference to the total bandwidth or perform spatial multiplexing transmission without causing excessive interference to the current transmission. In addition, the receiving device may also perform some out-of-band interference suppression, etc., based on the total bandwidth and/or bandwidth combination of the a-PPDU, thereby enhancing its reception. Further, generating the LTF based on the total bandwidth of the A-PPDU and/or the bandwidth combination of the A-PPDU enables optimization of the LTF, so that the receiving device can further reduce the PAPR based thereon.

In another implementation, the first PPDU may include third indication information indicating a bandwidth combination of the a-PPDU.

It can be understood that the sum of the individual bandwidths in the bandwidth combination is the total bandwidth of the a-PPDU. In other words, in this implementation, the third indication information implicitly indicates the total bandwidth of the a-PPDU. That is, the first PPDU includes a total bandwidth of the a-PPDU, wherein the total bandwidth of the a-PPDU is implicitly indicated by the third indication information.

In some embodiments, the third indication information may be carried in a first signaling field of the first PPDU. In some examples, the first signaling field may be a U-SIG 405 as shown in fig. 4.

Illustratively, the third indication information may be carried in part or all of the 4 th bit to the 6 th bit (B3-B5) of the first symbol (U-SIG-1) of the U-SIG. In this example, B3-B5 of U-SIG-1 may be redefined as a bandwidth combination of the A-PPDU.

In other examples, the granularity of the bandwidth in the aggregation may be 20MHz or 40MHz, in which case the third indication information may occupy a larger number of bits, such as 6 bits or the like or other values, which can correspond to more bandwidth combinations. For example, the third indication information may occupy at least one bit of B3-B5 of U-SIG-1 and { -B25 of SIG-1, B2 of U-SIG-2, B8 of U-SIG-2, and B20-B24 of U-SIG-1, which are not listed in this disclosure one by one.

In some embodiments, the third indication information may be carried in the first signaling field and/or the second signaling field of the first PPDU. That is, part or all of the third indication information may be carried in the first signaling field or the second signaling field of the first PPDU. Specifically, at least three situations can be included: the first signaling field carries all the third indication information, (2) the second signaling field carries all the third indication information, and (3) one part of the third indication information is carried in the first signaling field and the other part of the third indication information is carried in the second signaling field.

Illustratively, the third indication information may be carried in the negotiable and/or confirmatory bits of the U-SIG and/or the EHT-SIG of the first PPDU. In some examples, the third indication may be located in part or all of: a 26 th bit (B25) of a first symbol (U-SIG-1) of the U-SIG field, a3 rd bit (B2) of a second symbol (U-SIG-2) of the U-SIG field, a 9 th bit (B8) of the U-SIG-2, a 21 st to 25 th bits (B20-B24) of the U-SIG-1, and a U-SIG overflow portion (B13-B16) of the EHT-SIG.

For the embodiment that the third indication information is carried in the first signaling field and/or the second signaling field, reference may be made to the relevant description in the above implementation, and this implementation is not repeated.

Fig. 13 shows a schematic diagram of a format 1300 of an a-PPDU provided by an embodiment of the present disclosure. In the format 1300 of FIG. 13, the A-PPDU comprises 3 sub-PPDUs, PPDU 1310, PPDU 1320, and PPDU 1330, respectively. In format 1300, PPDU 1310, PPDU 1320, and PPDU 1330 are all EHT MU PPDUs.

The formats of

PPDU

1310, 1320, and 1330 in format 1300 are similar to format 400 described above in FIG. 4, but are not identical to format 400. The respective U-SIG fields of PPDU 1310, PPDU 1320, and PPDU 1330 indicate by "80-80-160" that the bandwidth combination of A-PPDU 1300 is 80-80-160.

It is understood that "80-80-160" in PPDU 1310, PPDU 1320 and PPDU 1330 may be carried in part or all of B3-B5 of U-SIG-1, or may be carried in part or all of { B25 of U-SIG-1, B2 and B8 of U-SIG-2, B20-B24 of U-SIG-1 }.

It should be understood that fig. 13 is merely illustrative, and may include a lesser number of PPDUs, such as any two of

PPDU

1310, 1320 and 1330, for example. In addition, the EHT MU PPDU type in fig. 13 may be replaced with HE MU PPDU, EHT + + MU PPDU, or the like. The present disclosure is not limited thereto.

Additionally, it should be understood that although the bandwidth combination "80-80-160" is shown in fig. 13 to be carried by the U-SIG, the present disclosure is not so limited, and may be carried by the EH-SIG, for example; for example, a part of the signal can be carried by the U-SIG, and another part of the signal can be carried by the EH-SIG.

By the embodiment, the third indication information of the bandwidth combination of the a-PPDUs is simultaneously included in the first PPDU, so that a device (such as a receiving device or a third playing device) receiving the first PPDU can implicitly know the total bandwidth of the a-PPDU and can simultaneously know the bandwidth of each PPDU in the a-PPDU. And then can carry out follow-up operation more synthetically, avoid causing too big interference to other receiving equipment.

Optionally, in this implementation manner, at 710, the method may further include: a Long Training Field (LTF) in the first PPDU is generated. It is understood that in a scenario where the type of the first DDPU is an EHT MU PPDU, the LTF may be an EHT LTF. Specifically, the LTF may be generated based on a total bandwidth of the A-PPDU and/or a bandwidth combination of the A-PPDU.

It is understood that the total bandwidth of the a-PPDU can be obtained by summing the individual bandwidths in the bandwidth combination. With respect to the embodiment of generating the LTF, reference may be made to the description in the above implementation, and this implementation is not repeated.

Through the implementation manner, the third indication information of the bandwidth combination of the a-PPDU is included in the first PPDU, so that a device (such as a receiving device or a third-party device) receiving the first PPDU can implicitly know the total bandwidth of the a-PPDU and know the bandwidth of each PPDU in the a-PPDU. And the device receiving the first PPDU can optimize the spatial multiplexing operation for the a-PPDU, such as spatial multiplexing transmission within the entire a-PPDU bandwidth. For a third party device receiving the first PPDU, it may keep silent (not transmit) with reference to the total bandwidth or perform spatial multiplexing transmission without causing excessive interference to the current transmission. In addition, the receiving device may also perform some out-of-band interference suppression, etc., based on the total bandwidth and/or bandwidth combination of the a-PPDU, thereby enhancing its reception. Further, generating the LTF based on the total bandwidth of the A-PPDU and/or the bandwidth combination of the A-PPDU enables optimization of the LTF, so that the receiving device can further reduce the PAPR based thereon.

In another implementation, the first PPDU may include first indication information, second indication information, and third indication information. The first indication information is used for indicating the bandwidth of the first PPDU, the second indication information is used for indicating the total bandwidth of the A-PPDU, and the third indication information is used for indicating the bandwidth combination of the A-PPDU.

In some embodiments, the first indication information is carried in a first signaling field of the first PPDU, or carried in a second signaling field of the first PPDU, or partially carried in the first signaling field of the first PPDU and another portion carried in the second signaling field of the first PPDU. In some examples, the first indication information may occupy at least one bit, e.g., one bit or multiple bits.

In some embodiments, the second indication information is carried in a first signaling field of the first PPDU, or carried in a second signaling field of the first PPDU, or partially carried in the first signaling field of the first PPDU and another portion carried in the second signaling field of the first PPDU. In some examples, the second indication information may occupy at least one bit, e.g., one bit or multiple bits.

In some embodiments, the third indication information is carried in a first signaling field of the first PPDU, or carried in a second signaling field of the first PPDU, or partially carried in the first signaling field of the first PPDU and another portion carried in the second signaling field of the first PPDU. In some examples, the third indication information may occupy at least one bit, e.g., one bit or multiple bits.

Illustratively, the first signaling field may comprise B3-B5 of U-SIG-1, and/or the first signaling field may comprise at least one of { B25 of U-SIG-1, B2 and B8 of U-SIG-2, B20-B24 of U-SIG-1 }. Illustratively, the second signaling field may include at least one of B13-B16 of the EHT-SIG.

For various bearer manners in this implementation manner, reference may be made to related similar descriptions in the above implementation manners, and in order to avoid repetition, this implementation manner is not described again.

Fig. 14 shows a schematic diagram of a format 1400 of an a-PPDU provided by an embodiment of the present disclosure. In the format 1400 of FIG. 14, the A-PPDU consists of 3 sub-PPDUs, PPDU 1410, PPDU 1420, and PPDU 1430, respectively. In format 1400, PPDU 1410, PPDU 1420, and PPDU 1430 are all EHT MU PPDU types.

In format 1400, the formats of PPDU 1410, PPDU 1420 and PPDU 1430 are similar to, but not identical to, format 400 described above in fig. 4. The U-SIG field of PPDU 1410 indicates by "BW =80MHz, A-BW =320MHz and 80-80-160" that the bandwidth of PPDU 1410 is 80MHz, the total bandwidth of A-PPDU 1400 is 320MHz, and the bandwidth combination of A-PPDU 1400 is 80-80-160. The U-SIG field of PPDU 1420 indicates by "BW =80MHz, A-BW =320MHz and 80-80-160" that the bandwidth of PPDU 1420 is 80MHz, the total bandwidth of A-PPDU 1400 is 320MHz, and the bandwidth combination of A-PPDU 1400 is 80-80-160. The U-SIG field of PPDU 1430 indicates that the bandwidth of PPDU 1430 is 160mhz, the total bandwidth of a-PPDU 1400 is 320mhz, and the bandwidth combination of a-PPDU 1400 is 80-80-160 by "BW =160mhz, a-BW =320MHz and 80-80-160".

It should be understood that fig. 14 is merely illustrative and may include, for example, a lesser number of PPDUs, such as any two of PPDU 1410, PPDU 1420 and PPDU 1430. In addition, the type of at least one PPDU in fig. 14, EHT MU PPDU, EHT + + MU PPDU, or the like may be replaced with HE MU PPDU. The present disclosure is not limited thereto.

Additionally, it should be understood that although it is shown in fig. 14 that bandwidth, total bandwidth, and bandwidth combinations are all carried on the U-SIG, the disclosure is not so limited, e.g., portions of bandwidth, total bandwidth, and bandwidth combinations may be carried on the EH-SIG.

Optionally, in this implementation, 710 may further include: a Long Training Field (LTF) in the first PPDU is generated. It is understood that in a scenario where the type of the first DDPU is an EHT MU PPDU, the LTF may be an EHT LTF. Specifically, the LTF may be generated according to at least one (one or more) of a bandwidth of the first PPDU, a total bandwidth of the A-PPDUs, and a combination of bandwidths of the A-PPDUs. With respect to the embodiment of generating the LTF, reference may be made to the description in the above implementation, and this implementation is not repeated.

Through the implementation manner, the first PPDU simultaneously comprises the first indication information of the bandwidth of the first PPDU, the second indication information of the total bandwidth of the A-PPDU and the third indication information of the bandwidth combination of the A-PPDU, so that a device (such as a receiving device or a third-party device) receiving the first PPDU can fully and directly acquire various bandwidth information, not only comprises the bandwidth of the first PPDU, but also can simultaneously and directly acquire the total bandwidth of the A-PPDU and the bandwidth of each PPDU in the A-PPDU. And the device receiving the first PPDU can optimize the spatial multiplexing operation for the a-PPDU, such as spatial multiplexing transmission within the entire a-PPDU bandwidth. For a third party device receiving the first PPDU, it may keep silent (not transmit) with reference to the total bandwidth or perform spatial multiplexing transmission without causing excessive interference to the current transmission. In addition, the receiving device can also perform some out-of-band interference suppression and the like according to the total bandwidth and/or bandwidth combination of the A-PPDU, thereby enhancing the reception thereof. Further, generating the LTF based on one or more of a bandwidth of the first PPDU, a total bandwidth of the a-PPDU, and a bandwidth combination of the a-PPDU enables optimization of the LTF so that the receiving device can further reduce the PAPR based thereon. It will be appreciated that although this implementation may have information redundancy, the implementation can ensure reception by the receiving device, reduce or even avoid retransmissions, etc.

Various implementations of 710 are described above in conjunction with fig. 8-13 on the basis of fig. 7, but it should be understood that the above implementations are merely illustrative and should not be construed as limiting the generation of a-PPDU.

Still referring to fig. 7, the transmitting device 101 transmits 720A-PPDU to the receiving device 102. In some embodiments, the transmitting device 101 may transmit a data frame, and the a-PPDU is included in the data frame.

Thus, in the embodiment of the present disclosure, the sending device may send the a-PPDU without separately sending to a single PPDU, which can fully utilize the transmission bandwidth and reduce the number of sending times. And for the sending equipment, the method is more energy-saving and efficient.

Further, the receiving device 102 may receive 720A first PPDU of the a-PPDUs. Specifically, the receiving device 102 may receive the first PPDU corresponding to its parked frequency based on its parked (park) frequency. That is, the frequency at which the receiving device 102 docks corresponds to the bandwidth of the first PPDU. In some embodiments, the receiving device 102 may be a second class of device, i.e., a device that does not implement the basic EHT features, or a device that also implements the advanced EHT features.

Further, the receiving device 102 may further parse 730 the first PPDU.

It is understood that the first PPDU received by the receiving device 102 includes one or more of the first indication information, the second indication information, and the third indication information. The first indication information is used for indicating the bandwidth of the first PPDU, the second indication information is used for indicating the total bandwidth of the A-PPDU, and the third indication information is used for indicating the bandwidth combination of the A-PPDU.

For the first indication information, the second indication information, and the third indication information, reference may be made to various implementation manners described above in connection with 710, and details are not repeated here to avoid repetition.

In some embodiments, if the first PPDU includes the first indication information, the receiving device 102 may obtain the bandwidth of the first PPDU by parsing. In some embodiments, if the first PPDU includes the second indication information, the receiving device 102 may obtain the total bandwidth of the a-PPDU by parsing. In some embodiments, if the first PPDU includes the third indication information, the receiving device 102 may obtain the bandwidth combination of the a-PPDU by parsing.

Exemplarily, if the first PPDU includes the third indication information, then the first PPDU does not include the first indication information and/or the second indication information in time, and the first PPDU may also obtain a bandwidth of the first PPDU and a total bandwidth of the a-PPDU based on a bandwidth combination of the a-PPDU. In some examples, the total bandwidth of the A-PPDU may be obtained by adding (summing) the individual bandwidths in the bandwidth combination of the A-PPDUs. In some examples, which is the bandwidth of the first PPDU may be determined from a combination of bandwidths of the a-PPDUs by a frequency at which the receiving device 102 is docked.

In some embodiments, the first PPDU may further include at least one bit therein for indicating that the first PPDU is aggregated in the a-PPDU. As such, the receiving device 102 may know whether the first PPDU is transmitted separately or as part of an a-PPDU based on the at least one bit. Illustratively, the at least one bit may be at least one bit of { B25 of U-SIG-1, B2 and B8 of U-SIG-2, B20-B24 of U-SIG-1, B13-B16 of EHT-SIG } of the first PPDU.

In some embodiments, the receiving device 102 may further determine the LTF sequence based on the indication information in the first PPDU, and further perform channel estimation and the like. The receiving device 102 may determine an LTF sequence, such as an EHT-LTF, based on one or more of a bandwidth of the first PPDU, a total bandwidth of the A-PPDU, and a bandwidth combination of the A-PPDU.

It is to be understood that the manner in which the receiving device 102 determines the LTF is consistent with the manner in which the transmitting device 101 generates the LTF, and therefore implementation of the receiving device 102 determining the LTF is not expanded in detail herein.

In other embodiments, the receiving device 102 may be a first type of device, i.e., a device that implements the basic characteristics of an EHT. At this time, the receiving device 102 may determine whether the following situation exists for the first PPDU: the attestation bit is not equal to a default value or there is an attestation state. If yes, after the first PPDU is finished, the relevant information in the version independence is transmitted to the MAC layer, and the receiving is terminated. If not, the first PPDU is received, and at this time, the receiving device 102 may resolve B3-B5 of U-SIG-1 of the first PPDU into a bandwidth of the first PPDU.

Fig. 15 shows a flowchart of another data transmission method 1500 provided by the embodiment of the present disclosure. The method 1500 in fig. 15 involves AP 201, STA221 and STA 223.

In the method 1500 shown in fig. 15, the AP 201 may generate (1510) a-PPDU based on at least two PPDUs, the a-PPDU including a first PPDU. The AP 201 transmits (1520) an A-PPDU. The STA221 parses (1532) the first PPDU of the A-PPDUs. The STA 223 parses (1534) the second PPDU of the A-PPDUs.

In the method 1500, the AP 201 may generate 1510A-PPDUs based on at least two PPDUs, a first PPDU of the a-PPDUs including at least one of: the first indication information is used for indicating the bandwidth of the first PPDU; second indication information for indicating a total bandwidth of the A-PPDU; or third indication information for indicating a bandwidth combination of the a-PPDU.

In some embodiments, the first PPDU is an EHT MU PPDU. The A-PPDU comprises at least a first PPDU and a second PPDU, wherein the second PPDU may be an HE MU PPDU or an EHT MU PPDU.

Specifically, reference may be made to 710 described above in connection with fig. 7 for 1510, which is not repeated herein.

In method 1500, AP 201 may transmit 1520A-PPDU.

Accordingly, the STA221 may receive a first PPDU of the 1520A-PPDUs and the STA 223 may receive a second PPDU of the 1520A-PPDUs.

Specifically, the STA221 may receive 1520A-PPDU a corresponding first PPDU based on a frequency at which the STA221 docks. The STA 223 may receive 1520A-PPDU of a corresponding second PPDU based on the frequency at which the STA 223 docked.

In this way, different receiving devices (STAs) can receive the corresponding PPDU at the frequency at which they are parked without interfering with the receiving behavior of other receiving devices.

In the method 1500, the STA221 may also parse 1532 the first PPDU. That is, the STA221 may parse the first PPDU it receives.

In the method 1500, the STA 223 may also parse 1534 the second PPDU. That is, the STA 223 may parse the second PPDU it receives.

It is understood that the parsing 1532 of the STA221 and the parsing 1534 of the STA 223 are independent of each other, that is, the execution order of the

steps

1532 and 1534 is not limited, and may be executed at different times or simultaneously, for example.

Therefore, in the embodiment of the present disclosure, the sending device aggregates at least two PPDUs into an a-PPDU and sends the a-PPDU, so that the bandwidth of wireless transmission can be fully utilized, and the signaling overhead is reduced. For the receiving device, the corresponding PPDU can be received based on the parked frequency, and since the PPDU received by the receiving device includes the information of the a-PPDU (such as the second indication information and/or the second indication information), the receiving device may also perform some out-of-band interference suppression and the like to enhance its reception.

It should be understood that in the embodiments of the present disclosure, "first", "second", "third", etc. are only intended to indicate that a plurality of objects may be different, but at the same time do not exclude the same between two objects. The terms "first," "second," "third," and the like, should not be construed as limiting any of the disclosed embodiments.

It should also be understood that the manner, condition, category and division of the embodiments in the present disclosure are for convenience of description only and should not constitute a particular limitation, and features in various manners, categories, conditions and embodiments may be combined with each other in a case of conforming to logic.

It should also be understood that the above description is intended only to assist those skilled in the art in better understanding the embodiments of the present disclosure, and is not intended to limit the scope of the embodiments of the present disclosure. Various modifications or changes or combinations may occur to those skilled in the art in light of the foregoing description. Such modifications, variations, or combinations are also within the scope of the embodiments of the present disclosure.

It should also be understood that the above description focuses on highlighting the differences before the various embodiments, and that the same or similar parts may be referred to or referred to each other, and for brevity, are not described in detail herein.

Fig. 16 shows a schematic diagram of an apparatus 1600 for data transmission according to an embodiment of the present disclosure. The apparatus 1600 may be implemented at the sending device 101, or may be implemented as a chip or system of chips in the sending device 101, the scope of the disclosure is not limited in this respect.

As shown in fig. 16, the apparatus 1600 may include a generating unit 1610 and a transmitting unit 1620. The generating unit 1610 may be configured to generate a-PPDU based on at least two PPDUs, a first PPDU of the a-PPDUs including at least one of: a first indication information for indicating a bandwidth of the first PPDU, a second indication information for indicating a total bandwidth of the A-PPDUs, or a third indication information for indicating a bandwidth combination of the A-PPDUs. The transmitting unit 1620 may be configured to transmit the a-PPDU generated by the generating unit 1610 to the receiving apparatus.

In some embodiments, the first PPDU includes first indication information and second indication information, the first indication information is carried in a first signaling field of the first PPDU, and the second indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

In some embodiments, the first PPDU includes first indication information and second indication information, the second indication information is carried in a first signaling field of the first PPDU, and the first indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

In some embodiments, the first PPDU includes first indication information and third indication information, the first indication information is carried in a first signaling field of the first PPDU, and the third indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

In some embodiments, the first PPDU includes second indication information and third indication information, the second indication information is carried in a first signaling field of the first PPDU, and the third indication information is carried in the first signaling field and/or a second signaling field of the first PPDU.

In some embodiments, each bandwidth in the bandwidth combination indicated by the third indication information may correspond to each PPDU arranged in an ascending or descending frequency order.

In some embodiments, at least one bit in the first signaling field or the second signaling field of the first PPDU is used to indicate that the first PPDU is aggregated in the a-PPDU.

In some embodiments, at least one bit is an acknowledge bit and/or a don't care bit.

In some embodiments, the first PPDU is an EHT MU PPDU, the first signaling field is a U-SIG, and the second signaling field is an EHT-SIG.

In some embodiments, the second PPDU of the a-PPDU is an HE MU PPDU or an EHT MU PPDU.

In some embodiments, the generating unit 1610 may be further configured to: generating the LTF in the first PPDU based on at least one of a bandwidth of the first PPDU, a total bandwidth of the A-PPDU, and a bandwidth combination.

In some embodiments, the generating unit 1610 may be further configured to: the LTF is also generated based on a type of each of the A-PPDUs.

Illustratively, the apparatus 1600 in fig. 16 may be implemented as the AP20 or the STA22, or may be implemented as a chip or a chip system in the AP20, or may be implemented as a chip or a chip system in the STA22, which is not limited in this disclosure. The apparatus 1600 in fig. 16 can be used to implement the various processes described above in conjunction with the sending device 101 in fig. 7, and for brevity, details are not repeated here.

Fig. 17 is a schematic diagram illustrating another apparatus 1700 for data transmission according to an embodiment of the present disclosure. The apparatus 1700 may be implemented at the receiving device 102, or may be implemented as a chip or system of chips in the receiving device 102, the scope of the disclosure not being limited in this respect.

As shown in fig. 17, apparatus 1700 may include a receiving unit 1710 and a parsing unit 1720. The receiving unit 1710 may be configured to receive a first PPDU of a-PPDU from a transmitting device, the first PPDU including at least one of: a first indication information for indicating a bandwidth of the first PPDU, a second indication information for indicating a total bandwidth of the A-PPDUs, or a third indication information for indicating a bandwidth combination of the A-PPDUs. The parsing unit 1720 may be configured to parse the first PPDU received by the receiving unit 1710.

In some embodiments, the respective bandwidths in the bandwidth combination indicated by the third indication information may correspond to the respective PPDUs arranged in an ascending or descending order of frequency.

In some embodiments, the first PPDU is an EHT MU PPDU, the first signaling field is U-SIG, and the second signaling field is EHT-SIG.

In some embodiments, the second PPDU in the a-PPDU is an HE MU PPDU or an EHT MU PPDU.

In some embodiments, the apparatus 1700 may further include a processing unit (not shown in fig. 17) configured to determine an LTF in the first PPDU based on at least one of a bandwidth, a total bandwidth, and a bandwidth combination; and performs channel estimation based on the LTF.

In some embodiments, the processing unit is configured to determine the LTFs further based on a type of each of the a-PPDUs.

Illustratively, the apparatus 1700 in fig. 17 may be implemented as the AP20 or the STA22, or may be implemented as a chip or a chip system in the AP20, or may be implemented as a chip or a chip system in the STA22, which is not limited in this disclosure. The apparatus 1700 in fig. 17 can be used to implement the processes described above in conjunction with the receiving device 102 in fig. 7, and for brevity, will not be described here again.

Fig. 18 shows a schematic diagram of another information transmission apparatus 1800 provided by the embodiment of the present disclosure. The apparatus 1800 may be used to implement the sending device 101 and the receiving device 102 as shown in fig. 1. As shown, the apparatus 1800 includes one or more processors 1810, one or more memories 1820 coupled to the processors 1810, and a communication module 1840 coupled to the processors 1810.

The communication module 1840 may be used for bi-directional communication. The communication module 1840 may have at least one communication interface for communication. The communication interface may include any interface necessary to communicate with other devices.

The processor 1810 may be of any type suitable for a local technology network, and may include, but is not limited to, at least one of: one or more of a general purpose computer, a special purpose computer, a microcontroller, a Digital Signal Processor (DSP), or a controller-based multi-core controller architecture. The device 1800 may have multiple processors, such as application specific integrated circuit chips, that are time dependent from a clock synchronized to the main processor.

The memory 1820 can include one or more non-volatile memories and one or more volatile memories. Examples of non-volatile memory include, but are not limited to, at least one of: read-Only Memory (ROM) 1824, erasable Programmable Read-Only Memory (EPROM), flash Memory, a hard disk, an optical disk (CD), a Digital Video Disk (DVD), or other magnetic and/or optical storage. Examples of volatile memory include, but are not limited to, at least one of: random Access Memory (RAM) 1822, or other volatile Memory that does not last for the duration of the power down.

The computer programs 1830 include computer-executable instructions that are executed by the associated processor 1810. The program 1830 may be stored in the ROM 1820. Processor 1810 may perform any suitable actions and processes by loading program 1830 into RAM 1820.

Embodiments of the present disclosure may be implemented by way of routines 1830 so that the apparatus 1800 may perform any of the processes as discussed with reference to fig. 7. Embodiments of the present disclosure may also be implemented by hardware or by a combination of software and hardware.

In some embodiments, the program 1830 may be tangibly embodied in a computer-readable medium, which may be included in the apparatus 1800 (such as in the memory 1820) or other storage device accessible by the apparatus 1800. The program 1830 may be loaded from a computer-readable medium into RAM 1822 for execution. The computer readable medium may include any type of tangible, non-volatile memory, such as a ROM, EPROM, flash memory, hard disk, CD, DVD, etc.

In some embodiments, the communication module 1840 in the apparatus 1800 may be implemented as a transmitter and receiver (or transceiver), which may be configured to transmit/receive a packet structure, such as a PPDU or a-PPDU. Additionally, the apparatus 1800 may further include one or more of a scheduler, a controller, and a radio frequency/antenna, which are not set forth in detail in this disclosure.

Illustratively, the apparatus 1800 in fig. 18 may be implemented as the AP20 or the STA22, or may be implemented as a chip or a chip system in the AP20, or may be implemented as a chip or a chip system in the STA22, which is not limited by the embodiment of the present disclosure.

The disclosed embodiments also provide a chip that may include an input interface, an output interface, and one or more processing circuits. In the embodiment of the present disclosure, the input interface and the output interface may complete the above signaling or data interaction, and the processing circuit may complete the generation and processing of the signaling or data information.

The embodiment of the present disclosure further provides a chip system, which includes a processor, configured to support an AP or an STA to implement the functions involved in any of the foregoing embodiments. In one possible design, the system-on-chip may further include a memory for storing necessary program instructions and data, which when executed by the processor, cause the device on which the system-on-chip is installed to implement the method according to any of the above embodiments. The chip system may be constituted by a chip, or may include a chip and other discrete devices.

Embodiments of the present disclosure also provide a processor coupled to a memory, the memory storing instructions that, when executed by the processor, cause the processor to perform the methods and functions of any of the above embodiments related to a transmitting device or a receiving device (AP or STA).

Embodiments of the present disclosure also provide a computer program product containing instructions, which when executed on a computer, cause the computer to perform the methods and functions related to the transmitting device or the receiving device (AP or STA) in any of the embodiments.

Embodiments of the present disclosure also provide a computer-readable storage medium having stored thereon computer instructions, which, when executed by a processor, cause the processor to perform the methods and functions related to a transmitting device or a receiving device (AP or STA) in any of the above embodiments.

The embodiment of the disclosure also provides a wireless communication system, which comprises a sending device and a receiving device. In some examples, the system may include at least one AP and at least one STA.

In general, the various embodiments of the disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software, which may be executed by a controller, microprocessor or other computing device. While various aspects of the embodiments of the disclosure are illustrated and described as block diagrams, flow charts, or using some other pictorial representation, it is well understood that the blocks, apparatus, systems, techniques or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.

The present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer-readable storage medium. The computer program product comprises computer executable instructions, such as instructions included in program modules, which are executed in a device on a real or virtual processor of the target to perform the processes/methods as described above with reference to fig. 7-15. Generally, program modules include routines, programs, libraries, objects, classes, components, data structures, etc. that perform particular tasks or implement particular abstract data types. In various embodiments, the functionality of the program modules may be combined or split between program modules as desired. Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed facility, program modules may be located in both local and remote memory storage media.

Computer program code for implementing the methods of the present disclosure may be written in one or more programming languages. These computer program codes may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the computer or other programmable data processing apparatus, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be performed. The program code may execute entirely on the computer, partly on the computer, as a stand-alone software package, partly on the computer and partly on a remote computer or entirely on the remote computer or server.

In the context of the present disclosure, computer program code or related data may be carried by any suitable carrier to enable a device, apparatus or processor to perform various processes and operations described above. Examples of a carrier include a signal, computer readable medium, and the like. Examples of signals may include electrical, optical, radio, acoustic, or other forms of propagated signals, such as carrier waves, infrared signals, and the like.

The computer readable medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination thereof. More detailed examples of a computer-readable storage medium include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical storage device, a magnetic storage device, or any suitable combination thereof.

Further, while the operations of the methods of the present disclosure are depicted in the drawings in a particular order, this does not require or imply that these operations must be performed in this particular order, or that all of the illustrated operations must be performed, to achieve desirable results. Rather, the steps depicted in the flowcharts may change the order of execution. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions. It should also be noted that the features and functions of two or more devices according to the present disclosure may be embodied in one device. Conversely, the features and functions of one apparatus described above may be further divided into embodiments by a plurality of apparatuses.

The foregoing has described implementations of the present disclosure, and the above description is illustrative, not exhaustive, and not limited to the implementations disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described implementations. The terminology used herein was chosen in order to best explain the principles of various implementations, the practical application, or improvements to the technology in the marketplace, or to enable others of ordinary skill in the art to understand various implementations disclosed herein.

Claims

1. A method of information transmission, comprising:

a transmitting device generates an aggregated physical layer protocol data unit, a-PPDU, based on at least two physical layer protocol data units, PPDUs, a first PPDU of the a-PPDU including at least one of:

first indication information for indicating a bandwidth of the first PPDU,

second indication information for indicating a total bandwidth of the A-PPDU, or

Third indication information, configured to indicate a bandwidth combination of the a-PPDU; and

and the sending equipment sends the A-PPDU to the receiving equipment.

2. A method of information transfer, comprising:

a receiving device receives a first PPDU of aggregated physical layer protocol data units (A-PPDUs) from a transmitting device, the first PPDU including at least one of:

first indication information for indicating a bandwidth of the first PPDU,

second indication information indicating a total bandwidth of the A-PPDU, or

Third indication information for indicating a bandwidth combination of the A-PPDU; and

the receiving device parses the first PPDU.

3. The method of claim 1 or 2, wherein the first PPDU comprises the first indication information and the second indication information, the first indication information being carried in a first signaling field of the first PPDU, the second indication information being carried in the first signaling field and/or a second signaling field of the first PPDU.

4. The method of claim 1 or 2, wherein the first PPDU comprises the first indication information and the second indication information, the second indication information carried in a first signaling field of the first PPDU, the first indication information carried in the first signaling field and/or a second signaling field of the first PPDU.

5. The method of claim 1 or 2, wherein the first PPDU comprises the first indication information and the third indication information, the first indication information being carried in a first signaling field of the first PPDU, the third indication information being carried in the first signaling field and/or a second signaling field of the first PPDU.

6. The method of claim 1 or 2, wherein the first PPDU comprises the second indication information and the third indication information, the second indication information being carried in a first signaling field of the first PPDU, the third indication information being carried in the first signaling field and/or a second signaling field of the first PPDU.

7. The method of any one of claims 1-6, wherein at least one bit in a first signaling field and/or a second signaling field of the first PPDU is used to indicate that the first PPDU is aggregated in the A-PPDU.

8. The method of claim 7, wherein the at least one bit is an acknowledge bit and/or a don't care bit.

9. The method of any of claims 3-8, wherein the first PPDU is a very high throughput (EHT) multi-user (MU) PPDU, the first signaling field is a generic signaling field (U-SIG), and the second signaling field is a very high throughput (EHT-SIG) signaling field.

10. The method of any one of claims 1-9, wherein the a-PPDU further comprises a second PPDU that is a high efficiency HE MU PPDU or an EHT MU PPDU.

11. The method of any one of claims 1 or 3 to 10, wherein generating the a-PPDU comprises:

the transmitting device generates a Long Training Field (LTF) in the first PPDU based on at least one of a bandwidth of the first PPDU, a total bandwidth of the A-PPDU, and the bandwidth combination.

12. The method of claim 11, wherein generating the LTF further comprises:

the transmitting device generates the LTF based on a type of each of the A-PPDUs.

13. The method of any of claims 2 to 10, further comprising:

the receiving device determining a Long Training Field (LTF) in the first PPDU based on at least one of the bandwidth, the total bandwidth, and the bandwidth combination;

the receiving device performs channel estimation based on the LTF.

14. The method of claim 13, wherein the receiving device determining the LTF in the first PPDU based on at least one of the bandwidth, the total bandwidth, and the bandwidth combination further comprises:

the receiving device determines the LTF based on a type of each of the A-PPDUs.

15. An apparatus for information transmission, comprising:

a generation unit configured to generate an aggregated physical layer protocol data unit, A-PPDU, based on at least two physical layer protocol data units, PPDUs, a first PPDU of the A-PPDUs comprising at least one of:

first indication information for indicating a bandwidth of the first PPDU,

a transmitting unit configured to transmit the A-PPDU to a receiving device.

16. An apparatus for information transmission, comprising:

a receiving unit configured to receive a first PPDU of aggregated physical layer protocol data units (A-PPDUs) from a transmitting device, the first PPDU including at least one of:

first indication information for indicating a bandwidth of the first PPDU,

a parsing unit configured to parse the first PPDU.

17. The apparatus of claim 15 or 16, wherein the first PPDU comprises the first indication information and the second indication information, the first indication information being carried in a first signaling field of the first PPDU, the second indication information being carried in the first signaling field and/or a second signaling field of the first PPDU.

18. The apparatus of claim 15 or 16, wherein the first PPDU comprises the first indication information and the second indication information, the second indication information being carried in a first signaling field of the first PPDU, the first indication information being carried in the first signaling field and/or a second signaling field of the first PPDU.

19. The apparatus of claim 15 or 16, wherein the first PPDU comprises the first indication information and the third indication information, the first indication information being carried in a first signaling field of the first PPDU, the third indication information being carried in the first signaling field and/or a second signaling field of the first PPDU.

20. The apparatus of claim 15 or 16, wherein the first PPDU comprises the second indication information and the third indication information, the second indication information being carried in a first signaling field of the first PPDU, the third indication information being carried in the first signaling field and/or a second signaling field of the first PPDU.

21. The apparatus according to any one of claims 12-20, wherein at least one bit in a first signaling field and/or a second signaling field of the first PPDU is used to indicate that the first PPDU is aggregated in the a-PPDU.

22. The apparatus of claim 21, wherein the at least one bit is an acknowledge bit and/or a don't care bit.

23. The apparatus of any one of claims 17-22, wherein the first PPDU is a very high throughput EHT multi-user MU PPDU, the first signaling field is a generic signaling field U-SIG, and the second signaling field is a very high throughput signaling field EHT-SIG.

24. The apparatus of any one of claims 15-23, wherein the a-PPDU further comprises a second PPDU that is a high efficiency HE MU PPDU or an EHT MU PPDU.

25. The apparatus according to any of claims 15 or 17 to 24, wherein the generating unit is configured to:

generating a Long Training Field (LTF) in the first PPDU based on at least one of a bandwidth of the first PPDU, a total bandwidth of the A-PPDU, and the bandwidth combination.

26. The apparatus of claim 25, wherein the generating unit is configured to:

the LTF is also generated based on a type of each of the A-PPDUs.

27. The apparatus of any of claims 16 to 24, further comprising a processing unit configured to:

determining a Long Training Field (LTF) in the first PPDU based on at least one of the bandwidth, the total bandwidth, and the bandwidth combination;

and performing channel estimation based on the LTF.

28. The apparatus of claim 27, wherein the processing unit is configured to:

the LTF is also determined based on a type of each of the A-PPDUs.

29. An apparatus for information transfer comprising a processor and a memory having stored thereon instructions for execution by the processor, the instructions when executed by the processor causing the apparatus to implement a method for information transfer according to any one of claims 1 to 14.

30. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method of information transmission according to any one of claims 1 to 14.

31. A computer program product having a computer program stored thereon, which computer program, when being executed by a processor, carries out the method of information transfer according to any one of claims 1 to 14.

32. A chip, characterized in that the chip comprises one or more processing circuits, wherein the one or more processing circuits are configured to implement the method of information transmission according to any one of claims 1 to 14.