Wireless communication methods and communication devices

Abstract

Provided are wireless communication methods and communication devices. A wireless communication method comprises: a first device sending an aggregated PPDU, the aggregated PPDU comprising a first PPDU and a second PPDU, wherein the first PPDU and the second PPDU are aligned in a time domain, and frequency-domain symbols of the first PPDU and the second PPDU are orthogonal, the first PPDU is an ELR PPDU, and the second PPDU is a non-ELR PPDU. Aligning a first PPDU and a second PPDU in a time domain and making the first PPDU and the second PPDU orthogonal in a frequency domain enable a first device to send a non-ELR PPDU while sending an ELR PPDU. Therefore, when an ELR PPDU is normally sent, spectrum resources can be fully used to send a non-ELR PPDU, thereby improving the system throughput.

Description

Wireless communication methods and communication devices Technical Field

[0001] This application relates to the field of communication technology, and more specifically, to a wireless communication method and a communication device. Background Technology

[0002] The operating bandwidth of the first device transmitting enhanced long-range (ELR) physical layer protocol data units (PPDUs) can be greater than the bandwidth (BW) of the ELR PPDU. Taking an access point (AP) as an example, in the 2.4 GHz band, the available bandwidth for Wireless Fidelity (Wi-Fi) is 20 MHz or 40 MHz, while the typical operating bandwidth of an AP is 80 MHz. This means that in the 2.4 GHz band, an AP with an 80 MHz operating bandwidth may only be able to transmit 20 MHz of ELR PPDUs. Therefore, when transmitting ELR PPDUs, a portion of the first device's operating bandwidth may be wasted. Consequently, the transmission of ELR PPDUs leads to lower spectrum utilization.

[0003] Summary of the Invention

[0004] This application provides a wireless communication method and a communication device. The various aspects covered by this application are described below.

[0005] In a first aspect, a wireless communication method is provided. The method includes: a first device transmitting an aggregated PPDU; wherein the aggregated PPDU includes a first PPDU and a second PPDU, the first PPDU and the second PPDU are aligned in the time domain, and the frequency domain symbols of the first PPDU and the second PPDU are orthogonal, the first PPDU is an ELR PPDU, and the second PPDU is a non-ELR PPDU.

[0006] The second part provides a wireless communication method. The method includes: a second device receiving an aggregated PPDU transmitted by a first device; wherein the aggregated PPDU includes a first PPDU and a second PPDU, the first PPDU and the second PPDU are time-domain aligned, and the frequency domain symbols of the first PPDU and the second PPDU are orthogonal, the first PPDU is an ELR PPDU, and the second PPDU is a non-ELR PPDU.

[0007] The third part provides a communication device, which is a first device, comprising: a transmitting unit for transmitting an aggregated PPDU; wherein the aggregated PPDU includes a first PPDU and a second PPDU, the first PPDU and the second PPDU are aligned in the time domain, and the frequency domain symbols of the first PPDU and the second PPDU are orthogonal, the first PPDU is an ELR PPDU, and the second PPDU is a non-ELR PPDU.

[0008] Part Four provides a communication device, which is a second device. The communication device includes: a receiving unit for receiving an aggregated PPDU transmitted by a first device; wherein the aggregated PPDU includes a first PPDU and a second PPDU, the first PPDU and the second PPDU are aligned in the time domain, and the frequency domain symbols of the first PPDU and the second PPDU are orthogonal, the first PPDU is an ELR PPDU, and the second PPDU is a non-ELR PPDU.

[0009] Fifthly, a communication device is provided, including a processor and a memory, the memory for storing one or more computer programs, the processor for calling the computer programs in the memory to enable some or all of the steps of the methods described in the preceding aspects of the communication device.

[0010] Sixthly, embodiments of this application provide a communication system that includes the aforementioned communication device. In another possible design, the system may further include other devices that interact with the communication device as described in the embodiments of this application.

[0011] In a seventh aspect, embodiments of this application provide a computer-readable storage medium storing a computer program that causes a communication device to perform some or all of the steps in the methods described above.

[0012] Eighthly, embodiments of this application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program operable to cause a communication device to perform some or all of the steps of the methods described in the foregoing aspects. In some implementations, the computer program product may be a software installation package.

[0013] Ninthly, embodiments of this application provide a chip including a memory and a processor, the processor being able to call and run a computer program from the memory to implement some or all of the steps described in the methods of the foregoing aspects.

[0014] By aligning the first and second PPDUs in the time domain and making them orthogonal in the frequency domain, the first device can transmit non-ELR PPDUs simultaneously with ELR PPDUs. Therefore, while transmitting ELR PPDUs normally, non-ELR PPDUs can be transmitted by fully utilizing spectrum resources, thereby improving system throughput. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the wireless communication system used in the embodiments of this application.

[0016] Figure 2 is an example diagram of an ELR PPDU format.

[0017] Figure 3 shows an example of the format of ELR data fields.

[0018] Figure 4 is a schematic flowchart of a wireless communication method provided in an embodiment of this application.

[0019] Figure 5 is a format example diagram of an ultra-high reliability (UHR) multi-user (MU) PPDU provided in an embodiment of this application.

[0020] Figure 6A is a format example diagram of an aggregated PPDU provided in an embodiment of this application.

[0021] Figure 6B is an example diagram of another aggregated PPDU format provided in an embodiment of this application.

[0022] Figure 7A is a schematic diagram of the format of the aggregated PPDU provided in Embodiment 1-1 of this application.

[0023] Figure 7B is a schematic diagram of the format of the aggregated PPDU provided in Embodiments 1-2 of this application.

[0024] Figure 8A is a format example diagram of a UHR capability element provided in an embodiment of this application.

[0025] Figure 8B is a format example diagram of a UHR physical layer capability (PHY capabilities) subfield provided in an embodiment of this application.

[0026] Figure 8C is an example diagram of the format of another UHR physical layer capability subfield provided in the embodiments of this application.

[0027] Figure 9 is an example diagram of the process of parsing PPDU by a communication device according to an embodiment of this application.

[0028] Figure 10 is a schematic structural diagram of a communication device provided in an embodiment of this application.

[0029] Figure 11 is a schematic structural diagram of another communication device provided in an embodiment of this application.

[0030] Figure 12 is a schematic structural diagram of a communication device provided in an embodiment of this application. Detailed Implementation

[0031] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0032] Communication system

[0033] The technical solutions of this application can be applied to various communication systems, such as wireless local area networks (WLAN), Wi-Fi, high-performance radio local area networks (HIPELAN), wide area networks (WAN), cellular networks, or other communication systems. For example, the technical solutions provided in this application can be applied to communication systems using the 802.11 standard. Exemplarily, the 802.11 standard includes, but is not limited to, the 802.11ax standard, the 802.11be standard, the 802.11bn standard, and the next-generation 802.11 standard (post-802.11bn).

[0034] Figure 1 shows a schematic diagram of a communication system applicable to an embodiment of this application. Referring to Figure 1, the communication devices in the communication system 100 may include AP111, AP112, and station (STA) 121 and STA122, wherein STA121 can access the network through AP111, and STA122 can access the network through AP112.

[0035] In some implementations, a STA can establish an association with one or more APs, after which the associated STAs and APs can communicate with each other. As shown in Figure 1, AP 111 and STA 121 can communicate after establishing an association, and AP 112 and STA 122 can communicate after establishing an association.

[0036] In some implementations, the communication in the communication system 100 can be communication between an AP and a non-AP STA, communication between two non-AP STAs, or communication between a STA and a peer STA. Here, a peer STA can refer to a device that communicates with the STA's counterpart. For example, a peer STA may be an AP or a non-AP STA.

[0037] It should be understood that Figure 1 exemplarily shows two AP STAs and two non-AP STAs. The communication system 100 may also include more AP STAs, or the communication system 100 may include other numbers of non-AP STAs. This application embodiment does not limit this.

[0038] In addition, the above-mentioned communication system can be applied to scenarios involving multi-device collaboration, such as multi-AP (multi-access points) collaboration or multi-site collaboration.

[0039] In the embodiments of this application, the names of AP and / or STA are not limited. In some scenarios, AP can also be called AP STA, that is, in a sense, AP is also a type of STA. In other scenarios, STA can be called non-AP STA.

[0040] In some scenarios, the aforementioned communication equipment can also be a "multi-link device (MLD)," meaning a device that can communicate through multiple communication links. These multiple communication links can include communication links in different frequency bands, such as millimeter-wave bands and / or low-frequency bands. Typically, if the multi-link device is an access point (AP), it can also be called an "AP MLD." If the multi-link device is a non-AP STA, it can also be called a "non-AP MLD."

[0041] In this application embodiment, the AP can be a device in a wireless network. The AP can be a communication server, router, switch, bridge, or other communication entity. Alternatively, the AP can include various forms of macro base stations, micro base stations, relay stations, etc. Of course, the AP can also be a chip, circuit, or processing system within these various forms of devices, thereby implementing the methods and functions of this application embodiment. APs can be applied in various scenarios, such as sensor nodes in smart cities (e.g., smart water meters, smart electricity meters, smart air quality monitoring nodes), smart devices in smart homes (e.g., smart cameras, projectors, displays, televisions, audio equipment, refrigerators, washing machines, etc.), nodes in the Internet of Things (IoT), entertainment terminals (e.g., AR, VR, and other wearable devices), smart devices in smart offices (e.g., printers, projectors, etc.), vehicle-to-everything (V2X) devices, and some infrastructure in daily life scenarios (e.g., vending machines, supermarket self-service navigation kiosks, self-service checkout machines, self-service ordering machines, etc.).

[0042] In some implementations, the role of the STA in the communication system is not absolute; in some scenarios, the STA can act as an AP. For example, in a scenario where a mobile phone connects to a router, the mobile phone can be a non-AP STA, while when the mobile phone acts as a hotspot for other mobile phones, it takes on the role of an AP.

[0043] In the embodiments of this application, the STA can be a device with wireless transceiver capabilities, such as one that supports the 802.11 series of protocols and can communicate with the AP or other STAs. For example, an STA is any user communication device that allows users to communicate with the AP and thus with the WLAN. STAs include, for example, user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent, or user device, etc.

[0044] In this application embodiment, the STA can also be a device that provides voice / data / image connectivity to the user, such as a handheld device, vehicle device, home device, home appliance, gaming device, etc., with wireless connection function or equipped with a wireless communication module. Examples include: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving vehicles, drones or aerial photography equipment, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to a wireless modem, in-vehicle devices, wearable devices, terminal devices in 5G networks, or future evolution of public land mobile communication networks. Terminal devices in a network (PLMN) can also be televisions, refrigerators, washing machines, kitchen appliances, door locks, fish tanks, robot vacuum cleaners, game consoles, cameras / camcorders, etc. with wireless connectivity, but this application embodiment is not limited to these.

[0045] By way of example and not limitation, in this embodiment, the STA can also be a wearable device. Wearable devices, also known as wearable smart devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Examples include smartwatches or smart glasses, as well as devices that focus on a specific type of application function and require cooperation with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0046] Furthermore, in this embodiment, the STA can also be a terminal device in an Internet of Things (IoT) system. IoT is an important component of future information technology development, and its main technical feature is connecting objects to networks through communication technologies, thereby realizing an intelligent network for human-machine interconnection and object-to-object interconnection. In this embodiment, IoT technology can achieve massive connectivity, deep coverage, and low terminal power consumption through technologies such as narrowband (NB).

[0047] Furthermore, in this embodiment, the STA can be a device in a vehicle-to-everything (V2X) system. The communication methods in a V2X system are collectively referred to as V2X (where X represents anything). For example, V2X communication includes: vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication, vehicle-to-pedestrian (V2P) communication, or vehicle-to-network (V2N) communication, etc.

[0048] In addition, in the embodiments of this application, the STA may also include sensors such as smart printers, train detectors, and gas stations. Its main functions include collecting data (some terminal devices), receiving control information and downlink data from the AP, and sending electromagnetic waves to transmit data to the AP.

[0049] In addition, the AP in this application embodiment can be a device for communicating with the STA. The AP can be a network device in a wireless local area network, and the AP can be used to communicate with the STA through the wireless local area network.

[0050] From the perspective of the communication standards supported by the AP, in some implementations, the AP can be a device that supports the 802.11be standard. The AP can also be a device that supports various current and future 802.11 family WLAN standards such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.

[0051] From the perspective of the communication standards supported by the STA, in some implementations, non-AP STAs can support the 802.11be standard. Non-AP STAs can also support various current and future 802.11 family of wireless local area networks (WLAN) standards, such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.

[0052] In this application embodiment, the frequency bands supported by WLAN technology are not limited. In some implementations, the frequency bands supported by WLAN technology may include, but are not limited to: low frequency bands (e.g., 2.4GHz, 5GHz, 6GHz) and high frequency bands (e.g., 45GHz, 60GHz).

[0053] It should be understood that the specific forms of STA and AP are not specifically limited in the embodiments of this application, and are merely illustrative examples.

[0054] ELR

[0055] Access points (APs) typically have higher transmission power than non-AP STAs, leading to a significant difference in downlink (DL) and uplink (UL) link budgets. A DL link refers to the link from the AP to a non-AP STA, while a UL link refers to the link from a non-AP STA to the AP. In some cases, the budget difference between DL and UL links can reach 6 dB. Some communication standards (such as UHR) have proposed the need to increase transmission range to address the uplink and downlink budget imbalance.

[0056] To address the aforementioned issues or needs, some communication technologies have proposed ELR technology to improve coverage. PPDUs that support ELR technology can be called ELR PPDUs. PPDUs that do not support ELR technology can be called non-ELR PPDUs.

[0057] ELR technology can be used for UL transmission. For example, ELR PPDUs can be used for UL transmission in the 5GHz and 6GHz bands. ELR technology can also be used for DL ​​transmission. For example, ELR PPDUs can be used for both DL and UL transmission in the 2.4GHz band.

[0058] Figure 2 is a sample format diagram of an ELR PPDU. The following is a description of the various fields contained in the ELR PPDU shown in Figure 2.

[0059] As shown in Figure 2, compared to non-ELR PPDU, ELR PPDU retains the legacy preamble and the universal signal field (U-SIG). The legacy preamble can include: legacy short training field (L-STF), legacy long training field (L-LTF), legacy signal field (L-SIG), and repeated legacy signal field (RL-SIG). The power of the L-STF and L-LTF fields can be increased by 3dB.

[0060] The U-SIG field format is shown in Table 1. The U-SIG field can contain two OFDM symbols, corresponding to the U-SIG-1 and U-SIG-2 fields respectively. The format of the U-SIG-1 field in an ELR PPDU can be similar to the subfields contained in the U-SIG-1 field in an EHT PPDU, although their specific meanings may differ. For example, for an ELR PPDU, a version identifier subfield set to 1 indicates a UHR, and a PPDU type and compression mode subfield value of 3 indicates an ELR PPDU.

[0061] Table 1

[0062] The U-SIG field is followed by two ELR mark symbols, corresponding to the ELR mark 1 (ELR-mark1) and ELR mark 2 (ELR-mark2) fields, respectively. These ELR mark symbols are used for ELR mode classification. Each ELR mark symbol consists of 48 data subcarriers and 4 pilot subcarriers. The duration of each ELR mark symbol can be 4 μs.

[0063] The ELR-STF field can reuse a 4μs EHT-STF sequence. The ELR-STF field can be boosted by up to 3dB.

[0064] The ELR-LTF field can be boosted with a power increase of up to 3 dB. A recommended ELR-LTF symbol count is 2, with a symbol type of 1.6 μs guard interval (GI) and 2 x LTFs (2 x LTFs with 1.6 μs GI).

[0065] The ELR-SIG field carries receiver data demodulation information. The ELR-SIG field follows the ELR-LTF. The ELR-SIG field and the ELR-data field share the same subcarrier tone plan and replication method to reduce implementation complexity.

[0066] Figure 3 shows an example of the format of an ELR data field. As shown in Figure 3, an ELR data field can be constructed by copying a regular resource unit (RRU) 52 four times (RRU52 4x DUP). It should be noted that in this application, RRU52 and 52-tone RRU have the same meaning.

[0067] There are two types of MCS that can be used in ELR data fields: binary phase shift keying (BPSK) with a bit rate of 1 / 2 (MCS 0) and quadrature phase shift keying (QPSK) with a bit rate of 1 / 2 (MCS 1), as shown in Table 2.

[0068] Table 2

[0069] It should be noted that in Table 1, Nbpscs represents the number of coded bits per subcarrier per spatial stream; Nsd represents the effective number of data tones carrying unique data; Ncbps represents the number of coded bits per OFDM symbol; and Ndbps represents the number of data bits per OFDM symbol.

[0070] This application relates to the EHT STF field and the EHT PPDU U-SIG field (i.e., the EHT U-SIG field). For ease of understanding, the EHT STF field and the EHT U-SIG field are explained below.

[0071] EHT STF field

[0072] The frequency sequence (or sequence) of the STF field can be determined based on the M sequence. The M sequence can be defined as: M = {-1, -1, -1, 1, 1, 1, -1, 1, 1, 1, -1, 1, 1, -1, 1, 1}.

[0073] For different transmission bandwidths and PPDU types (e.g., MU PPDU or TB PPDU), the transmitting and receiving parties can determine the STF sequence based on the M sequence. The following examples illustrate the STF sequences for 20MHz and 40MHz EHT MU PPDUs. In the examples below, EHTS can represent the EHT-STF sequence, and HES can represent the HE-STF sequence.

[0074] For 20MHz transmission, the frequency domain sequence of the EHT PPDU can satisfy the following formula: EHTS ―112:16:112 =HES ―112:16:112 .

[0075] in,

[0076] For 40MHz transmission, the frequency domain sequence of the EHT PPDU can satisfy the following formula: EHTS ―240:16:240 =HES ―240:16:240 .

[0077] in,

[0078] EHT U-SIG

[0079] The U-SIG field carries the information needed to decode the PPDU. The EHT U-SIG field consists of two parts: U-SIG-1 and U-SIG-2. The contents of the U-SIG field in the EHT MU PPDU are shown in Table 3.

[0080] Table 3

[0081] The operating bandwidth of the first device sending the ELR PPDU can be greater than the bandwidth of the ELR PPDU. Taking an access point (AP) as an example, in the 2.4GHz band, the available bandwidth for Wi-Fi is 20MHz or 40MHz, while the operating bandwidth of a typical AP is 80MHz. This means that in the 2.4GHz band, an AP with an 80MHz operating bandwidth may only be able to send 20MHz of ELR PPDUs. Therefore, when sending ELR PPDUs, a portion of the first device's operating bandwidth may be wasted, meaning no transmission occurs. Consequently, ELR PPDU transmission leads to low spectrum utilization. Furthermore, since the data field of the ELR PPDU is copied in the frequency domain, the problems of low data throughput and low spectrum utilization are further exacerbated.

[0082] Figure 4 is a schematic flowchart of a wireless communication method provided in an embodiment of this application to solve the above-mentioned problems. The method shown in Figure 4 can be executed by a first device and a second device. Both the first device and the second device can be the communication devices described above. For example, the first device may include an access point (AP), and the second device may include a non-AP STA, that is, the transmission from the first device to the second device can be a deep communication (DL) transmission.

[0083] The method shown in Figure 4 may include step S410.

[0084] In step S410, the first device sends an aggregated PPDU. The second device can receive the aggregated PPDU.

[0085] The aggregated PPDU may include a first PPDU and a second PPDU. The first PPDU may be an ELR PPDU, and the second PPDU may be a non-ELR PPDU.

[0086] It should be noted that the ELR PPDU is a PPDU that supports ELR technology. For example, the format of an ELR PPDU can be as shown in Figure 2. A non-ELR PPDU is a PPDU that does not support ELR technology. For example, a non-ELR PPDU can be a PPDU that supports UHR but does not support ELR technology. For instance, a non-ELR PPDU can include a UHR MU PPDU. The format of a UHR MU PPDU is illustrated below with reference to Figure 5.

[0087] As shown in Figure 5, the UHR MU PPDU may include the L-STF field, L-LTF field, L-SIG field, RL-SIG field, U-SIG field, UHR-SIG field, UHR-STF field, UHR-LTF field, data field, and PE field.

[0088] As shown in Figure 5, in the UHR MU PPDU, L-STF, L-LTF, L-SIG, RL-SIG, U-SIG, and UHR-SIG can be referred to as UHR pre-modulated fields. UHR-STF, UHR-LTF, data, and PE fields can be referred to as UHR modulated fields.

[0089] It should be noted that for UHR MU PPDUs, each UHR-LTF symbol can have the same GI duration as each data symbol, for example, 0.8 μs, 1.6 μs, or 3.2 μs respectively. The UHR-LTF field includes three types: 1x UHR-LTF, 2x UHR-LTF, and 4x UHR-LTF. The duration without GI for each 1x UHR-LTF, 2x UHR-LTF, or 4x UHR-LTF symbol is 3.2 μs, 6.4 μs, or 12.8 μs, respectively. The duration without GI for data symbols is 12.8 μs.

[0090] It should be noted that an aggregated PPDU can include multiple PPDUs. Any ELR PPDU among the multiple PPDUs can be the first PPDU, and any non-ELR PPDU among the multiple PPDUs can be the second PPDU.

[0091] It should be noted that "aggregated PPDU" is merely an example name for a PPDU that includes both a first PPDU and a second PPDU. Aggregated PPDUs can also be referred to by other names. For example, an aggregated PPDU can also be called a hybrid PPDU.

[0092] This application proposes that the first PPDU and the second PPDU are aligned in the time domain, and that the frequency domain symbols of the first PPDU and the second PPDU are orthogonal.

[0093] In some embodiments, time-domain alignment can include having the same duration in the time domain, i.e., the same start time and the same end time. For example, time-domain alignment of a first PPDU and a second PPDU can mean that the start time of the first PPDU and the start time of the second PPDU are the same, and that the end time of the first PPDU and the end time of the second PPDU are the same. As shown in Figure 6A, the start time and end time of the first PPDU and the second PPDU are both the same. Similarly, time-domain alignment of fields A and B can mean that fields A and B have the same start time and the same end time. When field A includes multiple subfields, the start time of field A can refer to the start time of the first subfield. Similarly, when field B includes multiple subfields, the start time of field B can refer to the start time of the first subfield. When field A includes multiple subfields, the end time of field A can refer to the end time of the last subfield. Similarly, when field B includes multiple subfields, the end time of field B can refer to the end time of the last subfield.

[0094] In some embodiments, time-domain alignment may include having the same number of OFDM symbols and aligning the symbols. Symbol alignment may include symbols at the same position having the same duration. For example, time-domain alignment of a first PPDU and a second PPDU may mean that the total number of OFDM symbols in the first PPDU is the same as the total number of OFDM symbols in the second PPDU, and the nth symbol in the first PPDU has the same duration as the nth symbol in the second PPDU. Similarly, time-domain alignment of fields A and B may mean that the total number of OFDM symbols in field A is the same as the total number of symbols in field B, and the nth symbol in field A has the same duration as the nth symbol in field B. Here, n is a positive integer.

[0095] By aligning the first and second PPDUs in the time domain and making them orthogonal in the frequency domain, the first device can transmit non-ELR PPDUs simultaneously with ELR PPDUs. Therefore, while transmitting ELR PPDUs normally, non-ELR PPDUs can be transmitted by fully utilizing spectrum resources, thereby improving system throughput.

[0096] The following example illustrates how the first PPDU and the second PPDU can be aligned in the time domain.

[0097] In some embodiments, the first field in the first PPDU is aligned with the first field in the second PPDU in the time domain. That is, fields with the same function (or the same name) in the first PPDU and the second PPDU can be aligned one by one. The first field may include: L-STF, L-LTF, L-SIG, RL-SIG, U-SIG, or PE field. Examples one through five are given below to illustrate this.

[0098] Example 1: The L-STF fields in the first PPDU and the second PPDU are aligned in the time domain.

[0099] Example 2: The L-LTF fields in the first PPDU and the second PPDU are aligned in the time domain.

[0100] Example 3: The L-SIG field in the first PPDU and the L-SIG field in the second PPDU are aligned in the time domain.

[0101] Example 4: The RL-SIG fields in the first PPDU and the second PPDU are aligned in the time domain.

[0102] Example 5: The U-SIG fields in the first PPDU and the second PPDU are aligned in the time domain. Specifically, the U-SIG-1 field in the first PPDU and the U-SIG-2 field in the second PPDU can be aligned in the time domain.

[0103] It should be noted that Examples 1 to 5 can be implemented individually or in combination. Taking Figure 6A as an example, the L-STF, L-LTF, L-SIG, RL-SIG, and U-SIG fields (including U-SIG-1 and U-SIG-2) of the first and second PPDUs are all aligned in the time domain.

[0104] In some embodiments, the first PPDU includes a mark field for ELR, i.e., an ELR mark field. The ELR mark field can be used for ELR mode classification. The second PPDU includes a first SIG field for non-ELR. The first SIG field can be, for example, a UHR-SIG field. In this case, the mark field in the first PPDU and the first SIG field in the second PPDU can be aligned in the time domain. Continuing with Figure 6A as an example, the ELR-mark field can be represented by ELR-mark 1 and ELR-mark 2 in Figure 6A and aligned in the time domain with the UHR-SIG field.

[0105] As one possible implementation, the number of symbols occupied by the first SIG field is equal to the number of symbols occupied by the tag field. As shown in Figure 5, when the second PPDU is a UHR MU PPDU, related technologies do not specify the number of symbols occupied by the UHR-SIG field (i.e., the first SIG field). This application ensures the alignment of the first SIG field and the tag field by limiting the number of symbols occupied by the first SIG field.

[0106] For example, the first SIG field may contain two OFDM symbols, corresponding to the UHR-SIG-1 subfield and the UHR-SIG-2 subfield, respectively. The mark field may contain two OFDM symbols, corresponding to the mark 1 subfield and the mark 2 subfield, respectively. The mark 1 subfield and the mark 2 subfield are time-domain aligned with the UHR-SIG-1 subfield and the UHR-SIG-2 subfield, respectively. That is, the mark 1 subfield is time-domain aligned with the SIG-1 subfield, and the mark 2 subfield is time-domain aligned with the SIG-2 subfield. For example, ELR-mark 1 and ELR-mark 2 may be time-domain aligned with UHR-SIG-1 and UHR-SIG-2, respectively.

[0107] In some implementations, the number of symbols in the LTF field for non-ELRs in the second PPDU is N, and the number of symbols in the LTF field for ELRs in the first PPDU is also N. Here, N is a positive integer. That is, this application limits the number of symbols in the LTF field for ELRs in the first PPDU to be the same as the number of symbols in the LTF field for non-ELRs in the second PPDU. For example, N can be 2. That is, both the LTF field for non-ELRs and the LTF field for ELRs contain 2 symbols.

[0108] For example, the LTF field for ELR can be the ELR-LTF field described above. The LTF field for non-ELR fields in the second PPDU can be the UHR-LTF field described above. As mentioned above, the related art does not limit the number of signs for the UHR-LTF field. This application, by limiting the number of signs for the UHR-LTF field, enables the UHR-LTF field and the ELR-LTF field to be aligned in the time domain.

[0109] It should be noted that the symbol type for the LTF field of the ELR in the first PPDU or the symbol type for the LTF field of the non-ELR in the second PPDU can be the same. For example, the symbol type can be: 2x LTF with 0.8μs GI, 2x LTF with 1.6μs GI, 4x LTF with 0.8μs GI, or 4x LTF with 3.2μs GI.

[0110] In some embodiments, the first PPDU includes a second SIG field and a first data field for ELR, and the second PPDU includes a second data field. The second SIG field and the first data field are aligned in the time domain with the second data field (e.g., the start time of the second SIG field and the start time of the second data field are the same, and the end time of the first data field and the end time of the second data field are the same). The second SIG field can be, for example, the ELR-SIG field described above. The first data field can be, for example, the ELR data field. Continuing with the example in Figure 6A, as shown in Figure 6A, the ELR-SIG field and the ELR data field are aligned with the second data field of the second PPDU (i.e., the data field in the second PPDU). That is, the start time of the ELR-SIG field and the start time of the second data field are the same, and the end time of the ELR data field and the end time of the second data field are the same.

[0111] It should be noted that the second SIG field, the first data field, and the second data field can use the same GI. The GI can be, for example, 0.8 μs, 1.6 μs, or 3.2 μs. The sum of the sign count of the second SIG field and the sign count of the first data field equals the sign count of the second data field.

[0112] In some embodiments, the duration of the PE field in the first PPDU can be a first duration. The duration of the PE field in the second PPDU can be the same as that in the first PPDU, which is the first duration.

[0113] Optionally, the first duration can be 0. In this case, the duration of the PE field in both the first PPDU and the second PPDU can be 0. Alternatively, both the first and second PPDUs can exclude the PE field. As shown in Figure 6A, neither the first nor the second PPDU is followed by the PE field after its data field.

[0114] Optionally, the first duration can be 4 μs. Taking Figure 6B as an example, in Figure 6B, the duration of the PE field of the first PPDU and the PE field of the second PPDU can both be 4 μs.

[0115] In related technologies, the duration of the PE field has various options, such as 0μs, 4μs, 8μs, 12μs, 16μs, or 20μs. This application limits the PE duration to a shorter duration (e.g., 0 or 4μs). It is understandable that a shorter PE duration can improve transmission efficiency. Furthermore, limiting the PE field duration in this application is more in line with the characteristics of ELR PPDU. Due to the characteristics of ELR PPDU, the data volume is smaller, the MCS order is lower, and the number of coded bits is correspondingly smaller. Combining the above description of the ELR data field and Table 2, it can be seen that the ELR data field is coded and modulated based on a 52-channel RRU and repeated 4 times in the frequency domain. Therefore, the number of coded bits carried by one OFDM data symbol is 48×4=192 or 96×4=384. In contrast, a non-ELR PPDU data symbol can carry far more than 192 or 384 coded bits. Considering that the function of the PE field is to provide additional reception processing time at the end of the data field, and that the ELR PPDU carries a relatively small number of coded bits, the processing of the last data symbol of the ELR PPDU and the transition from receive to transmit states can be completed within a short PE duration combined with a short interframe space (SIFS) (16μs). Therefore, setting the duration of the PE field to 0μs or 4μs is more in line with the characteristics of the ELR PPDU.

[0116] Optionally, the initial duration can exceed 4 μs, for example, 8 μs. For instance, when the target receiving device for the first PPDU has limited capability, the initial duration can be 8 μs. Devices with limited capability may include, for example, low-cost STAs with an operating bandwidth of only 20 MHz (20 MHz only operation). The limited capability of these devices means they have poor hardware processing power, and a longer PE field duration ensures that such STAs have sufficient time to process the ELR PPDU.

[0117] In some embodiments, the first PPDU may include a first STF field for ELR. The first STF field may be, for example, an ELR-STF field. The second PPDU may include a second STF field for non-ELR. The second STF field may be, for example, a UHR-STF field, and the first and second STF fields may be time-domain aligned. For example, the first and second STF fields may have equal durations (e.g., both 4 μs) and the first and second STF fields may have the same start time.

[0118] The first STF field can correspond to the first STF sequence, and the second STF field can correspond to the second STF sequence. The generation of the first and second STF sequences is explained below.

[0119] As one possible implementation, both the first STF sequence and the second STF sequence can be generated based on the first sequence. The first sequence can, for example, be an EHT-STF sequence. For instance, the first sequence can be an EHT-STF sequence for a 20MHz EHT MU PPDU or an EHT-STF sequence for a 40MHz EHT MU PPDU. The EHT-STF sequence for a 20MHz EHT MU PPDU or the EHT-STF sequence for a 40MHz EHT MU PPDU can be as described above, and will not be repeated here.

[0120] In the first implementation, both the first STF sequence and the second STF sequence are equal to the first sequence. That is, the first STF sequence and the second STF sequence are the same.

[0121] Taking the EHT-STF sequence with the first sequence being a 20MHz EHT MU PPDU as an example, both the first STF sequence and the second STF sequence can be EHT-STF sequences with a 20MHz EHT MU PPDU.

[0122] In the second implementation method, the first STF sequence can be obtained by performing a first phase rotation on the first sequence, and the second STF sequence can be obtained by performing a second phase rotation on the first sequence. In this case, the first sequence can be, for example, an EHT-STF sequence of a 20MHz PPDU.

[0123] Phase rotation can be achieved by multiplying the sequence by a coefficient. This coefficient can be, for example, 1, -1, j, or -j.

[0124] For example, the first phase rotation and the second phase rotation can be different. That is, applying different phase rotations to the first sequence can yield a first STF sequence and a second STF sequence. For instance, the first phase rotation can be multiplying the first sequence by 1, and the second phase rotation can be multiplying the first sequence by -1, resulting in a phase rotation of [1, -1]. Alternatively, the first phase rotation can be multiplying the first sequence by 1, and the second phase rotation can be multiplying the first sequence by j, resulting in a phase rotation of [1, j].

[0125] It is understandable that applying different phase rotations can make the first STF sequence and the second STF sequence different, thereby reducing the peak-to-average power ratio (PAPR) of the time-domain signal.

[0126] In the third implementation, the first STF sequence and the second STF sequence are different portions of the first sequence. In this case, the first sequence can be, for example, an EHT-STF sequence of a 40MHz PPDU. For instance, the first STF sequence can be the lower 20MHz portion of the EHT-STF sequence of a 40MHz EHT MU PPDU, and the second STF sequence can be the higher 20MHz portion of the EHT-STF sequence of a 40MHz EHT MU PPDU. The lower 20MHz portion of the 40MHz EHT MU PPDU EHT-STF sequence is the same as the 20MHz EHT MU PPDU EHT-STF sequence; therefore, it can also be said that the first STF sequence can be an EHT-STF sequence of a 20MHz EHT MU PPDU.

[0127] It is understandable that different parts of the first sequence are not the same. Therefore, the first STF sequence and the second STF sequence obtained using implementation method three are also different, which can reduce the PAPR of the time domain signal.

[0128] In some implementations, for the generation of aggregated PPDUs, the L-STF, L-LTF, L-SIG, and RL-SIG fields can use the respective field encoding processes from related technologies. That is, the L-STF, L-LTF, L-SIG, and RL-SIG fields in the first and second PPDUs can share a single encoding process. From the U-SIG field onwards, the first device can use two different field encoding processes: the encoding process for the first PPDU and the encoding process for the second PPDU. In other words, after the U-SIG field (including the U-SIG field), the first and second PPDUs each use their own two corresponding encoding processes.

[0129] In some embodiments, the power of one or more of the L-STF field, L-LTF field, STF field for non-ELR, and LTF field for non-ELR in the second PPDU can be increased by P dB. Here, P can be a non-negative number.

[0130] When P equals 0, the power of one or more of the L-STF field, L-LTF field, STF field for non-ELR, and LTF field for non-ELR in the second PPDU will not be increased. That is, the power of the above fields is consistent with the relevant technology, which requires minimal modification to the relevant technology.

[0131] When P is greater than 0, one or more of the following fields in the second PPDU—the L-STF field, the L-LTF field, the STF field for non-ELR, and the LTF field for non-ELR—are power boosted. As known from related technologies, some fields in the ELR PPDU require power boosting. Therefore, boosting the power of the aforementioned fields in the second PPDU can make the power of the first and second PPDUs comparable, thus achieving frequency domain power equalization of the aggregated PPDU.

[0132] As one possible implementation, the value of P can be determined based on the power boost value of the corresponding field in the first PPDU. For example, P can be 3. For instance, if the L-STF field power in the first PPDU is boosted by 3dB, then the L-STF field power in the second PPDU is boosted by 3dB. For instance, if the L-LTF field power in the first PPDU is boosted by 3dB, then the L-LTF field power in the second PPDU is boosted by 3dB. For instance, if the STF field power for ELR in the first PPDU is boosted by 3dB, then the STF field power for non-ELR in the second PPDU is boosted by 3dB. For instance, if the LTF field power for ELR in the first PPDU is boosted by 3dB, then the LTF field power for non-ELR in the second PPDU is boosted by 3dB.

[0133] The aggregated PPDU can be a DL PPDU. For example, the first device includes an AP, and the second device includes one or more non-AP STAs. When the AP performs downlink transmission to one or more non-AP STAs, the AP can send the aggregated PPDU provided in this application.

[0134] In some embodiments, the first PPDU, the second PPDU, and the aggregated PPDU can be transmitted in the 2.4 GHz band. That is, based on this application, both ELR PPDUs and non-ELR PPDUs can be transmitted simultaneously in the 2.4 GHz band. As mentioned above, related technologies specify that ELR PPDUs can be used for DL ​​transmission in the 2.4 GHz band, and the first PPDU is an ELR PPDU. Therefore, transmitting the first PPDU, the second PPDU, and the aggregated PPDU in the 2.4 GHz band allows the technical solution provided in this application to meet the requirements of related technologies, thereby enabling this application to be applied to related technologies to improve them.

[0135] In some embodiments, the bandwidth of both the first PPDU and the second PPDU can be 20MHz. In this case, the bandwidth of the aggregated PPDU is 40MHz. Considering that the ELR PPDU can be used for DL ​​transmission in the 2.4GHz band, and the requirement that the available bandwidth for Wi-Fi in the 2.4GHz band is 20MHz or 40MHz, setting both the first and second PPDUs to 20MHz allows the technical solution provided in this application to meet the requirements of related technologies, thereby enabling this application to be applied to related technologies to improve them.

[0136] In some embodiments, the first PPDU can be transmitted on the primary channel, and the second PPDU can be transmitted on the secondary channel. For example, the first PPDU is transmitted on the primary 20MHz bandwidth, and the second PPDU is transmitted on the secondary 20MHz bandwidth. Based on this, the device in ELR mode can resolve and receive the first PPDU on the primary channel, thereby simplifying the implementation of the device in ELR mode.

[0137] In some embodiments, the operating bandwidth of the target receiving device for the second PPDU is greater than or equal to the bandwidth of the aggregated PPDU. For example, if the bandwidth of the aggregated PPDU is 40MHz, the operating bandwidth of the target receiving device for the second PPDU is greater than or equal to 40MHz. That is, the target receiving device for the second PPDU is not a STA that only operates on 20MHz. For example, the operating bandwidth of the target receiving device for the second PPDU is 80MHz. Based on this, the target receiving device for the second PPDU can resolve the second PPDU on the secondary channel of the bandwidth where the aggregated PPDU is located.

[0138] For ease of understanding, the polymerization of PPDU will be described in detail below through Examples 1-1 and 1-2.

[0139] Example 1-1

[0140] Figure 7A is a schematic diagram of the format of the aggregated PPDU provided in Example 1-1.

[0141] In Example 1-1, the lower 20MHz channel is the secondary 20MHz channel. A second PPDU is transmitted on the secondary 20MHz channel. The second PPDU is a UHR MU PPDU. The UHR MU PPDU is used by the AP to transmit SU data to STA1. STA1 is allocated a 242-tone RRU. The higher 20MHz channel is the primary 20MHz channel. On the primary 20MHz channel, the AP transmits a first PPDU to STA2, which is an ELR PPDU. STA2 is farther from the AP. In Figure 7A, the L-STF, L-LTF, ELR-STF, UHR-STF, ELR-LTF, and UHR-LTF of the aggregated PPDU are all boosted by 3dB. Furthermore, the aggregated PPDU includes a PE field. The duration of the PE field is 4μs. For the ELR PPDU, the ELR data field can be 52-tone RRU × 4, meaning the 52-tone RRU is copied a total of 4 times in the frequency domain. Alternatively, the ELR data field can also be 106-tone RRU×2, meaning that the 106-tone RRU is copied and transmitted a total of 2 times in the frequency domain.

[0142] Examples 1-2

[0143] Figure 7B is a schematic diagram of the format of the aggregated PPDU provided in Examples 1-2.

[0144] In Examples 1-2, the lower 20MHz channel is the secondary 20MHz channel. A second PPDU is transmitted on the secondary 20MHz channel. The second PPDU is a UHR MU PPDU. The UHR MU PPDU is used by the AP for OFDMA transmission to STA1 and STA2. STA1 is allocated 106-channel RRU1, and STA2 is allocated 106-channel RRU2. The higher 20MHz channel is the primary 20MHz channel. On the primary 20MHz channel, the AP transmits the first PPDU to STA3, which is an ELR PPDU. STA3 is relatively far from the AP. In Figure 7B, the L-STF, L-LTF, ELR-STF, UHR-STF, ELR-LTF, and UHR-LTF of the aggregated PPDU are all boosted by 3dB. The aggregated PPDU does not contain a PE field; that is, the duration of the PE field is 0μs. For the ELR PPDU, the ELR data field can be 52-channel RRU × 4, meaning the 52-channel RRU is copied a total of 4 times in the frequency domain. Alternatively, the ELR data field can also be 106-channel RRU×2, meaning that the 106-channel RRU is copied and transmitted a total of 2 times in the frequency domain.

[0145] The target receiving device for an aggregated PPDU can be multiple devices. For example, the target receiver of a first PPDU can be one or more devices. Similarly, the target receiver of a second PPDU can be one or more devices. Taking a UHR MU PPDU as an example, if the target receiver of the UHR MU PPDU is a single device, then the UHR MU PPDU can be transmitted via SU; if the target receivers of the UHR MU PPDU are multiple devices, then the UHR MU PPDU can be transmitted via OFDMA.

[0146] Communication equipment can support sending and / or receiving ELR PPDUs. In other words, communication equipment can have the capability to send and / or receive ELR PPDUs. This capability can be determined by the hardware of the communication equipment. Equipment that supports sending and / or receiving ELR PPDUs can be called ELR-capable equipment. For example, an AP that supports sending and / or receiving ELR PPDUs can be called an ELR-capable AP. An STA that supports sending and / or receiving ELR PPDUs can be called an ELR-capable STA. Equipment that does not support sending and / or receiving ELR PPDUs can be called ELR-incapable equipment. For example, an AP that does not support sending and / or receiving ELR PPDUs can be called an ELR-incapable AP. An STA that does not support sending and / or receiving ELR PPDUs can be called an ELR-incapable STA.

[0147] In some embodiments, the station management entity (SME) of the communication equipment (including the first device and / or the second device) may maintain a first management information base (MIB). The first MIB may be used to indicate whether the device itself supports the transmission and / or reception of ELR PPDUs. The communication equipment can determine whether it supports the transmission and / or reception of ELR PPDUs based on the first MIB it maintains. For example, the first device may maintain a first MIB, which may be used to indicate whether the first device supports the transmission and / or reception of ELR PPDUs. Similarly, the second device may maintain a first MIB, which may be used to indicate whether the second device supports the transmission and / or reception of ELR PPDUs.

[0148] The first MIB can be a Boolean value. For example, a first MIB equal to true indicates that the communication device supports sending and / or receiving ELR PPDUs; a first MIB equal to false indicates that the communication device does not support sending and / or receiving ELR PPDUs. Similarly, a first MIB equal to true indicates that the communication device does not support sending and / or receiving ELR PPDUs; a first MIB equal to false indicates that the communication device supports sending and / or receiving ELR PPDUs.

[0149] It should be noted that this application does not limit the name of the first MIB. For example, the first MIB could be called dot11EnhancedLongRangeOptionImplemented.

[0150] In some embodiments, the communication device may transmit first capability information. The first capability information may be used to indicate whether the device transmitting the first capability information supports the reception and / or transmission of ELR PPDUs. For example, the first device may receive first capability information transmitted by a second device, and the first capability information may be used to indicate whether the second device supports the reception and / or transmission of ELR PPDUs. Alternatively, the first device may transmit first capability information to the second device, and the first capability information may be used to indicate whether the first device supports the reception and / or transmission of ELR PPDUs.

[0151] In some embodiments, the first capability information may be carried in a first capability element. In other words, the first capability information can be indicated by a first capability element. The first capability element may be, for example, a UHR capability element. A communication device can declare itself as a UHR device by transmitting a UHR capability element. Figure 8A is a format example diagram of a UHR capability element provided in an embodiment of this application.

[0152] As shown in Figure 8A, a UHR capability element may include one or more of the following fields: element ID, length, element ID extension, UHR MAC capabilities, UHR PHY capabilities, supported UHR-MCS and NSS set, and UHR PPE thresholds.

[0153] The element identifier field, together with the element identifier extended field, indicates the type of the element. In other words, the element identifier field and the element identifier extended field together indicate whether the element is a UHR capability element. For example, if the value of the element identifier field is set to a first preset value and the value of the element identifier extended field is set to a second preset value, then the element is a UHR capability element. The first preset value can be, for example, 255. The second preset value can be, for example, any one of 144 to 255. For example, the second preset value can be 146.

[0154] The field indicating the first capability information can be a first capability information field. The first capability information field can be 1 bit. For example, a value of 1 in the first capability information field can indicate support for the transmission and / or reception of ELR PPDUs; a value of 0 in the first capability information field can indicate that the transmission and / or reception of ELR PPDUs is not supported. Similarly, a value of 0 in the first capability information field can indicate support for the transmission and / or reception of ELR PPDUs; a value of 1 in the first capability information field can indicate that the transmission and / or reception of ELR PPDUs is not supported.

[0155] It should be noted that the name of the first capability information field is for illustrative purposes only. The first capability information field can also be called by other names. For example, it could also be called the "support for enhanced long range" field.

[0156] As one possible implementation, the first capability information can be carried in the first physical layer capability subfield of the first capability element. When the first capability element is a UHR capability element, the first physical layer capability subfield can be a UHR physical layer capability subfield. As shown in Figure 8B, the first capability information field can belong to a UHR physical layer capability subfield. It should be noted that this application does not limit the position of the first capability information field within the UHR physical layer capability subfield.

[0157] The device can be in ELR mode (or ELR operation mode) or non-ELR mode (or non-ELR operation mode). A device in ELR mode can send and / or receive ELR PPDUs. A device in non-ELR mode cannot send and / or receive ELR PPDUs.

[0158] As one possible implementation, devices with ELR capability can operate in either ELR mode or non-ELR mode. That is, a device with ELR capability can receive and / or send ELR PPDUs during certain time periods, and cannot receive and / or send ELR PPDUs during other time periods. In other words, even if a communication device has the capability to send and / or receive ELR PPDUs, it may still be in non-ELR mode.

[0159] As another possible implementation, devices with ELR capability can always be in ELR mode. That is, devices with ELR capability can send and / or receive ELR PPDUs at any time.

[0160] Devices without ELR capability can only operate in non-ELR mode. That is, devices without ELR capability cannot receive and / or send ELR PPDUs.

[0161] Therefore, a device in non-ELR mode can be either a device with ELR capability or a device without ELR capability.

[0162] The target receiving device for the first PPDU can be a device in ELR mode. The target receiving device for the second PPDU can be a device in non-ELR mode. That is, the target receiving device for the second PPDU can include: a device with ELR capability but in non-ELR mode, and / or, a device without ELR capability.

[0163] In some embodiments, the communication device may send second capability information. The second capability information may be used to indicate whether the device sending the second capability information supports the reception and / or transmission of aggregated PPDUs. In other words, the second capability information may be used to indicate whether the device sending the second capability information supports the simultaneous transmission of ELR PPDUs and non-ELR PPDUs. For example, a first device may receive second capability information sent by a second device, which may be used to indicate whether the second device supports the reception and / or transmission of aggregated PPDUs. Alternatively, the first device may send second capability information to the second device, which may be used to indicate whether the first device supports the reception and / or transmission of aggregated PPDUs.

[0164] The field indicating the second capability information can be a second capability information field. The second capability information field can be 1 bit. For example, a value of 1 in the second capability information field can indicate support for sending and / or receiving aggregated PPDUs; a value of 0 in the second capability information field can indicate that sending and / or receiving aggregated PPDUs is not supported. Similarly, a value of 0 in the second capability information field can indicate support for sending and / or receiving aggregated PPDUs; a value of 1 in the second capability information field can indicate that sending and / or receiving aggregated PPDUs is not supported.

[0165] It should be noted that the name of the second capability information field is for illustrative purposes only. The second capability information field can also be called by other names. For example, it could also be called the "support for hybrid PPDU" field.

[0166] In some embodiments, the second capability information may be carried on the first capability element. In other words, the second capability information can be indicated by the first capability element. The first capability element may be, for example, a UHR capability element. The format of the UHR capability element may be as shown in Figure 8A.

[0167] As one possible implementation, the second capability information can be carried in the first physical layer capability subfield of the first capability element. When the first capability element is a UHR capability element, the first physical layer capability subfield can be a UHR physical layer capability subfield. As shown in Figure 8C, the second capability information field can belong to a UHR physical layer capability subfield. It should be noted that this application does not limit the position of the second capability information field within the UHR physical layer capability subfield.

[0168] In some embodiments, a PPDU may include indication information (e.g., the first information and / or the second information described below) for indicating whether it is an aggregated PPDU. This indication information may be included in the U-SIG field of the first PPDU and / or the U-SIG field of the second PPDU. Based on the received indication information, the receiver of the aggregated PPDU can determine how to decode it. For example, for a receiver in ELR mode, if the indication information indicates that the PPDU is an aggregated PPDU, the receiver can decode the first PPDU on the channel where the first PPDU resides. Similarly, for a receiver in non-ELR mode, if the indication information indicates that the PPDU is an aggregated PPDU, the receiver can decode the second PPDU on the channel where the second PPDU resides. If the first PPDU is transmitted on the primary channel and the second PPDU is transmitted on the secondary channel, and the indication information indicates that the PPDU is an aggregated PPDU, the receiver in ELR mode can continue decoding the first PPDU on the primary channel, while the receiver in non-ELR mode can decode the second PPDU on the secondary channel.

[0169] In some embodiments, the first PPDU may include first information. The first information may be used to indicate that the first PPDU belongs to an aggregated PPDU, or the first information may be used to indicate that the first PPDU is an ELR PPDU. For example, for a device in ELR mode, if the PPDU received by the device includes the first information, the first information is used to indicate that the PPDU is an ELR PPDU. Similarly, for a device in non-ELR mode, if the PPDU received by the device includes the first information, the first information is used to indicate that the PPDU is an aggregated PPDU.

[0170] As mentioned above, the first PPDU can be a PPDU transmitted on the primary channel. Therefore, the first PPDU can also be understood as a PPDU transmitted on the primary channel. "The first PPDU includes first information" can also be understood as: the PPDU transmitted on the primary channel includes first information. The first information can be used to indicate that the PPDU transmitted on the primary channel belongs to an aggregated PPDU, or the first information can be used to indicate that the PPDU transmitted on the primary channel is an ELR PPDU. For example, for a device in ELR mode, if the PPDU received by the device on the channel includes first information, then the first information is used to indicate that the PPDU transmitted on the primary channel is an ELR PPDU. As another example, for a device in non-ELR mode, if the PPDU received by the device on the primary channel includes first information, then the first information is used to indicate that the PPDU received on the primary channel belongs to an aggregated PPDU, and the aggregated PPDU includes non-ELR PPDUs transmitted on the secondary channel. The device needs to parse the non-ELR PPDUs on the secondary channel.

[0171] For example, in an aggregated PPDU, the first PPDU is transmitted on the primary 20MHz sub-channel, and the second PPDU is transmitted on the secondary 20MHz sub-channel. One or more target receiving STAs for the second PPDU receive the 40MHz PPDU signal, but may only decode the preamble on the primary 20MHz sub-channel, i.e., decode the L-STF, L-LTF, L-SIG, RL-SIG, and U-SIG fields in the first PPDU. When one or more target receiving STAs for the second PPDU detect the first information indication on the primary 20MHz sub-channel, and at this time, one or more target receiving STAs for the second PPDU are in non-ELR mode, it indicates that the 40MHz PPDU is an aggregated PPDU, further indicating that the PPDU transmitted to it is on the secondary 20MHz sub-channel. These target STAs must decode the U-SIG and subsequent fields of the secondary 20MHz sub-channel in the same way as the second PPDU, i.e., decode the second PPDU on the secondary 20MHz sub-channel.

[0172] In some embodiments, the first information is carried in one or more fields of the first PPDU. If the receiver of the first PPDU is in ELR mode, the first value represented by one or more fields indicates that the first PPDU is an ELR PPDU. If the receiver of the first PPDU is in a non-ELR mode, the first value represented by one or more fields indicates that the first PPDU belongs to an aggregated PPDU. That is, the first value represented by the aforementioned one or more fields can be used not only to indicate that the PPDU is an ELR PPDU, but also to indicate that the PPDU belongs to an aggregated PPDU. The specific first value used to indicate which information is determined based on whether the receiver is in ELR mode. This indication method can reduce the number of bits occupied by the first information, thereby improving communication efficiency.

[0173] As one possible implementation, the first value represented by one or more fields carrying the first information includes a value of 0 for the UL / DL subfield in the U-SIG field of the first PPDU and a value of 3 for the PPDU type and compression mode subfield. That is, in the U-SIG field of the first PPDU, when the UL / DL subfield value is 0 and the PPDU type and compression mode subfield value is 3, for a receiver in non-ELR mode, this value indicates that the received PPDU is a DL aggregated PPDU; for a STA in ELR mode, this value indicates that the received PPDU is a DL ELR PPDU.

[0174] In some embodiments, the second PPDU includes second information. The second information indicates that the second PPDU belongs to an aggregated PPDU. As described above, the second PPDU may be a PPDU transmitted on a secondary channel. Therefore, the second PPDU can also be understood as a PPDU transmitted on a secondary channel. "The second PPDU includes second information" can also be understood as: the PPDU transmitted on the secondary channel includes second information.

[0175] As one possible implementation, the second information is carried in the UL / DL subfield and the PPDU type and compression mode subfield in the U-SIG field of the first PPDU. For example, a value of 0 in the UL / DL subfield and a value of 3 in the PPDU type and compression mode subfield in the U-SIG field of the second PPDU can indicate that the second PPDU belongs to an aggregated PPDU.

[0176] The meanings of other values ​​for the UL / DL subfield and PPDU type and compression mode subfield in PPDUs (including PPDUs transmitted on the primary channel and PPDUs transmitted on the secondary channel) can be consistent with relevant technologies. For example, when the UL / DL subfield is 0: a value of 0 for the PPDU type and compression mode subfield indicates DL OFDMA transmission; a value of 1 indicates UHR SU transmission or UHR sounding null data packet (NDP) (PPDU without data); a value of 2 indicates non-OFDMA DL MU-MIMO transmission; when the UL / DL subfield is 1: a value of 1 indicates EHT SU transmission or UHR sounding NDP. When the UL / DL subfield value is 1 and the PPDU type and compression mode subfield value is 3, it indicates a UL ELR PPDU.

[0177] In some embodiments, the second PPDU may not include a field indicating the second information. That is, the second PPDU may not contain a field indicating that the second PPDU belongs to an aggregated PPDU. The target receiving device of the second PPDU can determine that the currently parsed PPDU is an aggregated PPDU from the U-SIG field in the first PPDU, thus avoiding duplicate indication in the second PPDU and reducing information redundancy. For example, the target receiving device of the second PPDU can parse the U-SIG field in the first PPDU on the main channel to determine that the PPDU is an aggregated PPDU.

[0178] In some embodiments, the bandwidth subfield of the U-SIG field in the second PPDU can be used to indicate the bandwidth of the second PPDU and / or the bandwidth of the aggregated PPDU. For example, setting the UL / DL subfield of the U-SIG field in the second PPDU to 0 indicates DL transmission; setting the bandwidth subfield to 0 indicates that the bandwidth of the second PPDU is 20MHz. Alternatively, setting the bandwidth subfield to 1 indicates that the bandwidth of the entire aggregated PPDU is 40MHz.

[0179] Tables 4 and 5 illustrate the possible formats of the U-SIG field, using ELR PPDU as the first PPDU and UHR MU PPDU as the second PPDU as examples. Table 4 shows the format of the U-SIG field in ELR PPDU. Table 5 shows the format of the U-SIG field in UHR MU PPDU.

[0180] Table 4 U-SIG format of ELR PPDU

[0181] Table 5 U-SIG format of UHR MU PPDU

[0182] For ease of understanding, the following description is based on Example 2.

[0183] Example 2

[0184] Example 2 uses STA1 and STA2 as examples. STA1 is in ELR mode, and STA2 is in non-ELR mode. The operating bandwidth of STA2 is 80MHz.

[0185] The STA2 can receive 40MHz PPDU signals and only decodes the preamble on the main 20MHz sub-channel.

[0186] STA1 and STA2 consistently decode the L-STF, L-LTF, L-SIG, RL-SIG, and U-SIG fields of the primary 20MHz sub-channel at the start of the PPDU. When the values ​​of the UL / DL subfield and the PPDU type and compression mode subfield in the U-SIG field of the primary 20MHz sub-channel differ, the meanings parsed by STA1 and STA2 and the operations performed may vary as follows.

[0187] In case 1, the UL / DL subfield in the U-SIG field of the main 20MHz subchannel has a value of 0, and the PPDU type and compression mode subfields have a value of 3.

[0188] In case 1, the behavior of STA1 and STA2 can be shown in Figure 9.

[0189] In case 1, STA1 in ELR mode resolves the PPDU transmitted on the main channel as a downlink ELR PPDU and continues to resolve the remaining fields on the main 20MHz sub-channel.

[0190] In scenario 1, STA2, operating in non-ELR mode, resolves the PPDU transmitted on the main channel to be a downlink aggregated PPDU, and that the PPDU transmitted on the main channel is an ELR PPDU. This means the target receiver of the PPDU transmitted on the main channel should be an STA operating in ELR mode, not an STA operating in non-ELR mode. STA2 then attempts to decode the U-SIG and its subsequent fields on the secondary 20MHz sub-channel, following the method used for decoding non-ELR PPDUs (such as the UHR MU PPDU shown in Figure 9).

[0191] The ELR data field in Figure 9 shows 52-channel RRU × 4, meaning the 52-channel RRU is copied and transmitted 4 times in the frequency domain. The ELR data field can also be 106-channel RRU × 2, meaning the 106-channel RRU is copied and transmitted a total of 2 times in the frequency domain.

[0192] In scenario 2, the UL / DL subfield in the U-SIG field of the primary 20MHz subchannel has a value of 0, and the PPDU type and compression mode subfields also have values ​​of 0. Both STA1 and STA2 interpret this PPDU as a DL OFDMA transmission.

[0193] In scenario 3, the UL / DL subfield in the U-SIG field of the primary 20MHz subchannel has a value of 0, while the PPDU type and compression mode subfields have a value of 1. Both STA1 and STA2 interpret this PPDU as either a SU transmission or a probe NDP.

[0194] In scenario 4, the UL / DL subfield in the U-SIG field of the primary 20MHz subchannel has a value of 0, while the PPDU type and compression mode subfields have a value of 2. Both STA1 and STA2 interpret this PPDU as a non-OFDMA DL MU-MIMO transmission.

[0195] Case 5: In the U-SIG field of the primary 20MHz sub-channel, the UL / DL subfield is set to 1, and the PPDU type and compression mode subfields are also set to 1. Both STA1 and STA2 interpret this PPDU as a UL SU transmission or probe NDP.

[0196] In scenario 6, the UL / DL subfield in the U-SIG field of the primary 20MHz subchannel has a value of 1, while the PPDU type and compression mode subfields have a value of 3. Both STA1 and STA2 interpret this PPDU as a UL ELR PPDU transmission.

[0197] The method embodiments of this application have been described in detail above. The apparatus embodiments of this application are described in detail below. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments. Therefore, any parts not described in detail can be referred to the foregoing method embodiments.

[0198] Figure 10 is a schematic structural diagram of a communication device 1000 provided in an embodiment of this application. The communication device 1000 is a first device. The communication device 1000 may include a transmitting unit 1010.

[0199] The transmitting unit 1010 is used to transmit an aggregated PPDU; wherein the aggregated PPDU includes a first PPDU and a second PPDU, the first PPDU and the second PPDU are aligned in the time domain, and the frequency domain symbols of the first PPDU and the second PPDU are orthogonal, the first PPDU is an ELR PPDU, and the second PPDU is a non-ELR PPDU.

[0200] In an optional embodiment, the transmitting unit 1010 may be a transceiver 1230. The communication device 1000 may also include a processor 1210 and a memory 1220, as shown in FIG12.

[0201] In this embodiment, the communication device 1000 can be used to execute some or all of the method steps executed by the first device in the above method embodiments. The communication device 1000 includes units or modules for executing the aforementioned method steps. The method flow has been described in detail in the foregoing embodiments. The modules in this embodiment have the same function or perform the same steps, and will not be described again here. However, those skilled in the art should know that the textual descriptions corresponding to the foregoing method embodiments can be incorporated into this embodiment and correspond to the modules in the communication device 1000.

[0202] Figure 11 is a schematic structural diagram of a communication device 1100 provided in an embodiment of this application. The communication device 1100 is a second device. The communication device 1100 may include a receiving unit 1110.

[0203] The receiving unit 1110 is used to receive aggregated PPDUs; wherein the aggregated PPDUs include a first PPDU and a second PPDU, the first PPDU and the second PPDU are aligned in the time domain, and the frequency domain symbols of the first PPDU and the second PPDU are orthogonal, the first PPDU is an ELR PPDU, and the second PPDU is a non-ELR PPDU.

[0204] In an optional embodiment, the receiving unit 1110 may be a transceiver 1230. The communication device 1100 may also include a processor 1210 and a memory 1220, as shown in FIG12.

[0205] In this embodiment, the communication device 1100 can be used to execute some or all of the method steps executed by the second device in the above method embodiments. The communication device 1100 includes units or modules for executing the aforementioned method steps. The method flow has been described in detail in the foregoing embodiments. The modules in this embodiment have the same function or perform the same steps, and will not be described again here. However, those skilled in the art should know that the textual descriptions corresponding to the foregoing method embodiments can be incorporated into this embodiment and correspond to the modules in the communication device 1100.

[0206] Figure 12 is a schematic structural diagram of a communication apparatus according to an embodiment of this application. The dashed lines in Figure 12 indicate that the unit or module is optional. The apparatus 1200 can be used to implement the methods described in the above method embodiments. The apparatus 1200 can be a chip or a communication device.

[0207] Apparatus 1200 may include one or more processors 1210. The processor 1210 may support apparatus 1200 in implementing the methods described in the preceding method embodiments. The processor 1210 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0208] The apparatus 1200 may further include one or more memories 1220. The memories 1220 store a program that can be executed by the processor 1210, causing the processor 1210 to perform the methods described in the preceding method embodiments. The memories 1220 may be independent of the processor 1210 or integrated within the processor 1210.

[0209] The device 1200 may also include a transceiver 1230. The processor 1210 can communicate with other devices or chips via the transceiver 1230. For example, the processor 1210 can send and receive data with other devices or chips via the transceiver 1230.

[0210] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to the communication device provided in this application, and the program causes a computer to execute the methods performed by the communication device in various embodiments of this application.

[0211] This application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the communication device provided in this application embodiment, and the program causes a computer to execute the methods performed by the communication device in various embodiments of this application.

[0212] This application also provides a computer program. This computer program can be applied to the communication device provided in this application, and causes the computer to execute the methods performed by the communication device in various embodiments of this application.

[0213] It should be understood that the terms "system" and "network" in this application can be used interchangeably. Furthermore, the terminology used in this application is only for explaining specific embodiments of the application and is not intended to limit the application. The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0214] In the embodiments of this application, a "field" may also be referred to as a "domain", "subfield", or "subfield". A field may occupy one or more bytes (byte / octet), or a field may occupy one or more bits (bit).

[0215] The field names defined in the embodiments of this application are merely examples, and the field may have other names.

[0216] Unless otherwise stated, this application does not restrict the position of the fields. That is, the position of the fields can be adjusted.

[0217] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0218] In the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.

[0219] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.

[0220] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including AP and STA). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0221] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0222] In the embodiments of this application, "comprising" can refer to direct inclusion or indirect inclusion. Optionally, "comprising" mentioned in the embodiments of this application can be replaced with "indicating" or "used to determine". For example, "A includes B" can be replaced with "A indicates B" or "A is used to determine B".

[0223] In the various embodiments of this application, the order of the above-mentioned processes does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0224] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the WiFi protocol and related protocols applied to future WiFi communication systems, and this application does not limit it.

[0225] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0226] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0227] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0228] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs, DVDs) or semiconductor media (e.g., solid-state disks, SSDs), etc.

[0229] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method of wireless communication, the method comprising: include: The first device sends a Polymer Layer Protocol Data Unit (PPDU); The aggregated PPDU includes a first PPDU and a second PPDU, which are aligned in the time domain and have orthogonal frequency domain symbols. The first PPDU is an enhanced long-range ELR PPDU, and the second PPDU is a non-ELR PPDU.

2. The method of claim 1, wherein, The first field in the first PPDU is aligned with the first field in the second PPDU in the time domain.

3. The method of claim 2, wherein, The first field includes: traditional short training field L-STF, traditional long training field L-LTF, traditional signal L-SIG, repetitive traditional signal RL-SIG or general signal U-SIG field.

4. The method according to any one of claims 1 to 3, characterized in that, The first PPDU includes a tag field for ELR, and the second PPDU includes a first SIG field for non-ELR, the tag field being time-domain aligned with the first SIG field.

5. The method of claim 4, wherein, The first SIG field contains two OFDM symbols, which correspond to the SIG-1 subfield and the SIG-2 subfield, respectively. The marker field includes a marker 1 subfield and a marker 2 subfield, which are time-domain aligned with the SIG-1 subfield and the SIG-2 subfield, respectively.

6. The method according to any one of claims 1-5, characterized in that, The second PPDU contains N symbols in the LTF field for non-ELR, and the first PPDU also contains N symbols in the LTF field for ELR, where N is a positive integer.

7. The method of claim 6, wherein, The value of N is 2.

8. The method according to any one of claims 1-7, characterized in that, The first PPDU includes a second SIG field and a first data field for ELR, and the second PPDU includes a second data field. The second SIG field and the first data field are aligned with the second data field in the time domain.

9. The method according to any one of claims 1-8, characterized in that, The duration of the packet extension PE field in the first PPDU and the duration of the PE field in the second PPDU are both the first duration.

10. The method of claim 9, wherein, The first duration is 0 or 4 μs.

11. The method according to any one of claims 1-10, characterized in that, The first STF sequence for ELR in the first PPDU and the second STF sequence for non-ELR in the second PPDU are both generated based on the first sequence.

12. The method of claim 11, wherein, The first STF sequence is obtained by performing a first phase rotation on the first sequence, and the second STF sequence is obtained by performing a second phase rotation on the first sequence.

13. The method of claim 11, wherein, The first STF sequence and the second STF sequence are different parts of the first sequence.

14. The method according to any one of claims 1-13, characterized in that, The first PPDU includes first information, which indicates that the first PPDU belongs to the aggregated PPDU, or, the first information indicates that the first PPDU is an ELR PPDU; and / or, The second PPDU includes second information, which indicates that the second PPDU belongs to the aggregated PPDU.

15. The method of claim 14, wherein, The first information is carried in one or more fields in the first PPDU. If the recipient of the first PPDU is in ELR mode, the first value represented by the one or more fields indicates that the first PPDU is an ELR PPDU. If the recipient of the first PPDU is in non-ELR mode, the first value represented by the one or more fields indicates that the first PPDU belongs to the aggregated PPDU.

16. The method of claim 15, wherein, The first value represented by the one or more fields includes a value of 0 for the UL / DL subfield in the U-SIG field of the first PPDU and a value of 3 for the PPDU type and compression mode subfield.

17. The method of claim 14 or 15, wherein, The second information is carried in the UL / DL subfield and the PPDU type and compression mode subfield in the U-SIG field of the first PPDU.

18. The method of any one of claims 1-17, wherein, The site management entity (SME) of the first device maintains a first management information base (MIB), which is used to indicate whether the first device supports the reception and / or transmission of the ELR PPDU.

19. The method of any one of claims 1-18, wherein, The method further includes: The first device sends or receives first capability information; The first capability information is used to indicate whether the device sending the first capability information supports the reception and / or transmission of the ELR PPDU.

20. The method of claim 19, wherein, The first capability information is carried in the first capability element.

21. The method of claim 20, wherein, The first capability information is carried in the first physical layer capability subfield of the first capability element.

22. The method of any one of claims 1-21, wherein, The method further includes: The first device sends or receives the second capability information; The second capability information is used to indicate whether the device sending the second capability information supports the reception and / or transmission of the aggregated PPDU.

23. The method of claim 22, wherein, The second capability information is carried in the first capability element.

24. The method of claim 23, wherein, The second capability information is carried in the first physical layer capability subfield of the first capability element.

25. The method of any one of claims 1-24, wherein, The operating bandwidth of the target receiving device of the second PPDU is greater than or equal to the bandwidth of the aggregated PPDU.

26. The method of any one of claims 1-25, wherein, The first PPDU is transmitted on the primary 20MHz bandwidth, and the second PPDU is transmitted on the secondary 20MHz bandwidth.

27. A method of wireless communication, the method comprising: include: The second device receives the Polymer Layer Protocol Data Unit (PPDU) sent by the first device; The aggregated PPDU includes a first PPDU and a second PPDU, which are aligned in the time domain and have orthogonal frequency domain symbols. The first PPDU is an enhanced long-range ELR PPDU, and the second PPDU is a non-ELR PPDU.

28. The method of claim 27, wherein, The first field in the first PPDU is aligned with the first field in the second PPDU in the time domain.

29. The method of claim 28, wherein, The first field includes: traditional short training field L-STF, traditional long training field L-LTF, traditional signal L-SIG, repetitive traditional signal RL-SIG or general signal U-SIG field.

30. The method of any one of claims 27-29, wherein, The first PPDU includes a tag field for ELR, and the second PPDU includes a first SIG field for non-ELR, the tag field being time-domain aligned with the first SIG field.

31. The method of claim 30, wherein, The first SIG field contains two OFDM symbols, which correspond to the SIG-1 subfield and the SIG-2 subfield, respectively. The marker field includes a marker 1 subfield and a marker 2 subfield, which are time-domain aligned with the SIG-1 subfield and the SIG-2 subfield, respectively.

32. The method of any one of claims 27-31, wherein, The second PPDU contains N symbols in the LTF field for non-ELR, and the first PPDU also contains N symbols in the LTF field for ELR, where N is a positive integer.

33. The method of claim 32, wherein, The value of N is 2.

34. The method of any one of claims 27-33, wherein, The first PPDU includes a second SIG field and a first data field for ELR, and the second PPDU includes a second data field. The second SIG field and the first data field are aligned with the second data field in the time domain.

35. The method of any one of claims 27-34, wherein, The duration of the packet extension PE field in the first PPDU and the duration of the PE field in the second PPDU are both the first duration.

36. The method of claim 35, wherein, The first duration is 0 or 4 μs.

37. The method of any one of claims 27-36, wherein, The first STF sequence for ELR in the first PPDU and the second STF sequence for non-ELR in the second PPDU are both generated based on the first sequence.

38. The method of claim 37, wherein, The first STF sequence is obtained by performing a first phase rotation on the first sequence, and the second STF sequence is obtained by performing a second phase rotation on the first sequence.

39. The method of claim 37, wherein, The first STF sequence and the second STF sequence are different parts of the first sequence.

40. The method according to any one of claims 27-39, characterized in that, The first PPDU includes first information, which indicates that the first PPDU belongs to the aggregated PPDU, or, the first information indicates that the first PPDU is an ELR PPDU; and / or, The second PPDU includes second information, which indicates that the second PPDU belongs to the aggregated PPDU.

41. The method of claim 40, wherein, The first information is carried in one or more fields in the first PPDU. If the recipient of the first PPDU is in ELR mode, the first value represented by the one or more fields indicates that the first PPDU is an ELR PPDU. If the recipient of the first PPDU is in non-ELR mode, the first value represented by the one or more fields indicates that the first PPDU belongs to the aggregated PPDU.

42. The method according to claim 41, characterized in that, The first value represented by the one or more fields includes a value of 0 for the UL / DL subfield in the U-SIG field of the first PPDU and a value of 3 for the PPDU type and compression mode subfield.

43. The method according to claim 41 or 42, characterized in that, The second information is carried in the UL / DL subfield and the PPDU type and compression mode subfield in the U-SIG field of the first PPDU.

44. The method according to any one of claims 27-43, characterized in that, The site management entity (SME) of the first device maintains a first management information base (MIB), which is used to indicate whether the first device supports the reception and / or transmission of the ELR PPDU.

45. The method according to any one of claims 27-44, characterized in that, The method further includes: The second device sends or receives the first capability information; The first capability information is used to indicate whether the device sending the first capability information supports the reception and / or transmission of the ELR PPDU.

46. ​​The method according to claim 45, characterized in that, The first capability information is carried in the first capability element.

47. The method according to claim 46, characterized in that, The first capability information is carried in the first physical layer capability subfield of the first capability element.

48. The method according to any one of claims 27-47, characterized in that, The method further includes: The second device sends or receives second capability information; The second capability information is used to indicate whether the device sending the second capability information supports the reception and / or transmission of the aggregated PPDU.

49. The method according to claim 48, characterized in that, The second capability information is carried in the first capability element.

50. The method according to claim 49, characterized in that, The second capability information is carried in the first physical layer capability subfield of the first capability element.

51. The method according to any one of claims 27-50, characterized in that, The operating bandwidth of the target receiving device of the second PPDU is greater than or equal to the bandwidth of the aggregated PPDU.

52. The method according to any one of claims 27-51, characterized in that, The first PPDU is transmitted on the primary 20MHz bandwidth, and the second PPDU is transmitted on the secondary 20MHz bandwidth.

53. A communication device, characterized in that, The communication device is a first device, and the communication device includes: The transmitting unit is used to transmit Polymer Layer Protocol Data Units (PPDUs). The aggregated PPDU includes a first PPDU and a second PPDU, which are aligned in the time domain and have orthogonal frequency domain symbols. The first PPDU is an enhanced long-range ELR PPDU, and the second PPDU is a non-ELR PPDU.

54. The communication device according to claim 53, characterized in that, The first field in the first PPDU is aligned with the first field in the second PPDU in the time domain.

55. The communication device according to claim 54, characterized in that, The first field includes: traditional short training field L-STF, traditional long training field L-LTF, traditional signal L-SIG, repetitive traditional signal RL-SIG or general signal U-SIG field.

56. The communication device according to any one of claims 53-55, characterized in that, The first PPDU includes a tag field for ELR, and the second PPDU includes a first SIG field for non-ELR, the tag field being time-domain aligned with the first SIG field.

57. The communication device according to claim 56, characterized in that, The first SIG field contains two OFDM symbols, which correspond to the SIG-1 subfield and the SIG-2 subfield, respectively. The marker field includes a marker 1 subfield and a marker 2 subfield, which are time-domain aligned with the SIG-1 subfield and the SIG-2 subfield, respectively.

58. The communication device according to any one of claims 53-57, characterized in that, The second PPDU contains N symbols in the LTF field for non-ELR, and the first PPDU also contains N symbols in the LTF field for ELR, where N is a positive integer.

59. The communication device according to claim 58, characterized in that, The value of N is 2.

60. The communication device according to any one of claims 53-59, characterized in that, The first PPDU includes a second SIG field and a first data field for ELR, and the second PPDU includes a second data field. The second SIG field and the first data field are aligned with the second data field in the time domain.

61. The communication device according to any one of claims 53-60, characterized in that, The duration of the packet extension PE field in the first PPDU and the duration of the PE field in the second PPDU are both the first duration.

62. The communication device according to claim 61, characterized in that, The first duration is 0 or 4 μs.

63. The communication device according to any one of claims 53-62, characterized in that, The first STF sequence for ELR in the first PPDU and the second STF sequence for non-ELR in the second PPDU are both generated based on the first sequence.

64. The communication device according to claim 63, characterized in that, The first STF sequence is obtained by performing a first phase rotation on the first sequence, and the second STF sequence is obtained by performing a second phase rotation on the first sequence.

65. The communication device according to claim 63, characterized in that, The first STF sequence and the second STF sequence are different parts of the first sequence.

66. The communication device according to any one of claims 53-65, characterized in that, The first PPDU includes first information, which indicates that the first PPDU belongs to the aggregated PPDU, or, the first information indicates that the first PPDU is an ELR PPDU; and / or, The second PPDU includes second information, which indicates that the second PPDU belongs to the aggregated PPDU.

67. The communication device according to claim 66, characterized in that, The first information is carried in one or more fields in the first PPDU. If the recipient of the first PPDU is in ELR mode, the first value represented by the one or more fields indicates that the first PPDU is an ELR PPDU. If the recipient of the first PPDU is in non-ELR mode, the first value represented by the one or more fields indicates that the first PPDU belongs to the aggregated PPDU.

68. The communication device according to claim 67, characterized in that, The first value represented by the one or more fields includes a value of 0 for the UL / DL subfield in the U-SIG field of the first PPDU and a value of 3 for the PPDU type and compression mode subfield.

69. The communication device according to claim 66 or 68, characterized in that, The second information is carried in the UL / DL subfield and the PPDU type and compression mode subfield in the U-SIG field of the first PPDU.

70. The communication device according to any one of claims 53-69, characterized in that, The site management entity (SME) of the first device maintains a first management information base (MIB), which is used to indicate whether the first device supports the reception and / or transmission of the ELR PPDU.

71. The communication device according to any one of claims 53-70, characterized in that, The communication device is also used for: Sending or receiving first capability information; The first capability information is used to indicate whether the device sending the first capability information supports the reception and / or transmission of the ELR PPDU.

72. The communication device according to claim 71, characterized in that, The first capability information is carried in the first capability element.

73. The communication device according to claim 72, characterized in that, The first capability information is carried in the first physical layer capability subfield of the first capability element.

74. The communication device according to any one of claims 53-73, characterized in that, The communication device is also used for: Sending or receiving secondary capability information; The second capability information is used to indicate whether the device sending the second capability information supports the reception and / or transmission of the aggregated PPDU.

75. The communication device according to claim 74, characterized in that, The second capability information is carried in the first capability element.

76. The communication device according to claim 75, characterized in that, The second capability information is carried in the first physical layer capability subfield of the first capability element.

77. The communication device according to any one of claims 53-76, characterized in that, The operating bandwidth of the target receiving device of the second PPDU is greater than or equal to the bandwidth of the aggregated PPDU.

78. The communication device according to any one of claims 53-77, characterized in that, The first PPDU is transmitted on the primary 20MHz bandwidth, and the second PPDU is transmitted on the secondary 20MHz bandwidth.

79. A communication device, characterized in that, The communication device is a second device, and the communication device includes: The receiving unit is used to receive Polymer Layer Protocol Data Units (PPDUs) sent by the first device; The aggregated PPDU includes a first PPDU and a second PPDU, which are aligned in the time domain and have orthogonal frequency domain symbols. The first PPDU is an enhanced long-range ELR PPDU, and the second PPDU is a non-ELR PPDU.

80. The communication device according to claim 79, characterized in that, The first field in the first PPDU is aligned with the first field in the second PPDU in the time domain.

81. The communication device according to claim 80, characterized in that, The first field includes: traditional short training field L-STF, traditional long training field L-LTF, traditional signal L-SIG, repetitive traditional signal RL-SIG or general signal U-SIG field.

82. The communication device according to any one of claims 79-81, characterized in that, The first PPDU includes a tag field for ELR, and the second PPDU includes a first SIG field for non-ELR, the tag field being time-domain aligned with the first SIG field.

83. The communication device according to claim 82, characterized in that, The first SIG field contains two OFDM symbols, which correspond to the SIG-1 subfield and the SIG-2 subfield, respectively. The marker field includes a marker 1 subfield and a marker 2 subfield, which are time-domain aligned with the SIG-1 subfield and the SIG-2 subfield, respectively.

84. The communication device according to any one of claims 79-83, characterized in that, The second PPDU contains N symbols in the LTF field for non-ELR, and the first PPDU also contains N symbols in the LTF field for ELR, where N is a positive integer.

85. The communication device according to claim 84, characterized in that, The value of N is 2.

86. The communication device according to any one of claims 79-85, characterized in that, The first PPDU includes a second SIG field and a first data field for ELR, and the second PPDU includes a second data field. The second SIG field and the first data field are aligned with the second data field in the time domain.

87. The communication device according to any one of claims 79-86, characterized in that, The duration of the packet extension PE field in the first PPDU and the duration of the PE field in the second PPDU are both the first duration.

88. The communication device according to claim 87, characterized in that, The first duration is 0 or 4 μs.

89. The communication device according to any one of claims 79-88, characterized in that, The first STF sequence for ELR in the first PPDU and the second STF sequence for non-ELR in the second PPDU are both generated based on the first sequence.

90. The communication device according to claim 89, characterized in that, The first STF sequence is obtained by performing a first phase rotation on the first sequence, and the second STF sequence is obtained by performing a second phase rotation on the first sequence.

91. The communication device according to claim 89, characterized in that, The first STF sequence and the second STF sequence are different parts of the first sequence.

92. The communication device according to any one of claims 79-91, characterized in that, The first PPDU includes first information, which indicates that the first PPDU belongs to the aggregated PPDU, or, the first information indicates that the first PPDU is an ELR PPDU; and / or, The second PPDU includes second information, which indicates that the second PPDU belongs to the aggregated PPDU.

93. The communication device according to claim 92, characterized in that, The first information is carried in one or more fields in the first PPDU. If the recipient of the first PPDU is in ELR mode, the first value represented by the one or more fields indicates that the first PPDU is an ELR PPDU. If the recipient of the first PPDU is in non-ELR mode, the first value represented by the one or more fields indicates that the first PPDU belongs to the aggregated PPDU.

94. The communication device according to claim 93, characterized in that, The first value represented by the one or more fields includes a value of 0 for the UL / DL subfield in the U-SIG field of the first PPDU and a value of 3 for the PPDU type and compression mode subfield.

95. The communication device according to claim 93 or 94, characterized in that, The second information is carried in the UL / DL subfield and the PPDU type and compression mode subfield in the U-SIG field of the first PPDU.

96. The communication device according to any one of claims 79-95, characterized in that, The site management entity (SME) of the first device maintains a first management information base (MIB), which is used to indicate whether the first device supports the reception and / or transmission of the ELR PPDU.

97. The communication device according to any one of claims 79-96, characterized in that, The communication device is also used for: Sending or receiving first capability information; The first capability information is used to indicate whether the device sending the first capability information supports the reception and / or transmission of the ELR PPDU.

98. The communication device according to claim 97, characterized in that, The first capability information is carried in the first capability element.

99. The communication device according to claim 98, characterized in that, The first capability information is carried in the first physical layer capability subfield of the first capability element.

100. The communication device according to any one of claims 79-99, characterized in that, The communication device is also used for: Sending or receiving secondary capability information; The second capability information is used to indicate whether the device sending the second capability information supports the reception and / or transmission of the aggregated PPDU.

101. The communication device according to claim 100, characterized in that, The second capability information is carried in the first capability element.

102. The communication device according to claim 101, characterized in that, The second capability information is carried in the first physical layer capability subfield of the first capability element.

103. The communication device according to any one of claims 79-102, characterized in that, The operating bandwidth of the target receiving device of the second PPDU is greater than or equal to the bandwidth of the aggregated PPDU.

104. The communication device according to any one of claims 79-103, characterized in that, The first PPDU is transmitted on the primary 20MHz bandwidth, and the second PPDU is transmitted on the secondary 20MHz bandwidth.

105. A communication device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or transmit signals so that the communication device performs the method as described in any one of claims 1-52.

106. An apparatus, characterized in that, Includes a processor for calling a program from memory to cause the device to perform the method as described in any one of claims 1-52.

107. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1-52.

108. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method as described in any one of claims 1-52.

109. A computer program product, characterized in that, Includes a program that causes a computer to perform the method as described in any one of claims 1-52.

110. A computer program, characterized in that, The computer program causes the computer to perform the method as described in any one of claims 1-52.

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