Wireless communication method and related station and access point

Abstract

The present invention discloses a communication method and related stations and access points using the communication method. The communication method of the present invention is executed by a station and is used to communicate with an access point in a wireless communication system, and the communication method includes: receiving allocation information of a first user block of an STA in a first RU indicating a MU‑PPDU from an AP, wherein the first RU includes multiple user blocks allocated to different STAs; and sending UL data in the first user block to the AP or receiving DL data in the first user block from the AP according to the allocation information. The communication method of the present invention and related stations and access points using the communication method can improve overall system performance.

Description

[0001]

Cross reference

[0002] The present invention claims priority to the following application: U.S. Provisional Patent Application No. 62 / 930,692 filed on November 5, 2019. The above-mentioned U.S. Provisional Patent Application is incorporated herein by reference in its entirety. [Technical field]

[0003] The present application relates generally to wireless communications, and more particularly to apparatus and methods for flexible resource unit (RU) allocation. [Background technology]

[0004] With the growing demand for ubiquitous computing and networking, various wireless technologies have been developed, including Wireless Fidelity (Wi-Fi), which is a wireless local area network (WLAN) technology that allows mobile devices, such as smartphones, smart pads, laptops, portable multimedia players, embedded devices, etc., to obtain wireless services in the 2.4 GHz, 5 GHz, 6 Gz or 60 GHz frequency bands.

[0005] Since supporting the initial WLAN technology using the 2.4 GHz frequency, the Institute of Electrical and Electronics Engineers (IEEE) has commercialized or developed various technical standards. For example, IEEE 802.11ac supports multi-user (MU) transmission using spatial freedom, from the access point (AP) to the station (STA) in the downlink (DL) direction through a multiple-input multiple-output (MU-MIMO) scheme. In order to improve the performance felt by users who require high-capacity and high-rate services, IEEE 802.11ax has been proposed, which uses orthogonal frequency division multiple access (OFDMA) and / or MU-MIMO in both the DL and uplink (UL) directions. That is, in addition to supporting frequency and spatial multiplexing from one AP to multiple STAs, IEEE 802.11ax also supports transmission from multiple STAs to the AP.

[0006] In IEEE 802.11ax, a Resource Unit (RU) refers to a set of 78.125KHz bandwidth subcarriers (tones) used in the DL and UL transmissions of a single STA, and a multi-user physical layer protocol data unit (MU-PPDU) can carry multiple RUs, allowing multiple users to efficiently access an AP at the same time.

[0007] However, according to the IEEE 802.11ax standard, each RU in a MU-PPDU can only be allocated to a single STA. When some STAs aggregated in one MU-PPDU for OFDMA transmission have only a small amount of transmit / receive traffic, padding bits are inserted in the RU, such as Figure 1 As shown, this will inevitably cause waste of radio resources and reduce the overall system performance.

[0008] Therefore, a more efficient RU allocation scheme is desired for the next generation IEEE 802.11 system. [Summary of the invention]

[0009] The invention discloses a communication method and related stations and access points using the communication method.

[0010] The present invention discloses a communication method, which is executed by a station and is used to communicate with an access point in a wireless communication system. The communication method includes: receiving allocation information of a first user block of an STA in a first RU of an MU-PPDU from an AP, wherein the first RU includes multiple user blocks allocated to different STAs; and sending UL data in the first user block to the AP or receiving DL data in the first user block from the AP according to the allocation information.

[0011] The present invention discloses a station (STA) for communicating with an access point (AP) in a wireless communication system, the station comprising: a wireless transceiver for wireless transmission and reception with the AP; and a processor, configured to: receive allocation information of a first user block of the STA in a first resource unit (RU) of a multi-user physical layer protocol data unit (MU-PPDU) from the AP via the wireless transceiver, wherein the first RU comprises a plurality of user blocks allocated to different STAs; and according to the allocation information, send uplink (UL) data in the first user block to the AP via the wireless transceiver or receive downlink (DL) data in the first user block from the AP.

[0012] The present invention also discloses an access point (AP) for communicating with a station in a wireless communication system, the access point comprising: a wireless transceiver for wirelessly transmitting and receiving with the STA; and a processor configured to: send allocation information indicating multiple user blocks allocated to the STA in multiple resource units (RUs) of a multi-user physical layer protocol data unit (MU-PPDU) to the STA via the wireless transceiver, wherein at least one RU includes multiple user blocks allocated to different STAs; and send downlink (DL) data in the corresponding user block to the STA or receive uplink (UL) data in the corresponding user block from the STA via the wireless transceiver.

[0013] The communication method of the present invention and the related stations and access points using the communication method can improve the overall system performance.

Brief Description of the Drawings

[0014] Figure 1 A schematic diagram showing RU allocation applied in conventional practice. Figure 2 is a block diagram of a wireless communication system according to an embodiment of the present application.

[0015] Figure 3 A block diagram of a STA according to an embodiment of the present application is shown.

[0016] Figure 4 A block diagram of an AP according to an embodiment of the present application is shown.

[0017] Figure 5 This is a schematic diagram of RU allocation of DL / UL MU-PPDU in an embodiment of the present application.

[0018] Figure 6 This is a schematic diagram of RU allocation of DL MU-PPDU in an embodiment of the present application.

[0019] Figure 7 A schematic diagram of providing allocation information of RU allocation in a header of a DL MU-PPDU according to an embodiment of the present application.

[0020] Figure 8 This is a schematic diagram of RU allocation of UL MU-PPDU in an embodiment of the present application.

[0021] Fig. 9 A schematic diagram of providing allocation information of RU allocation in a trigger frame of a PPDU in an embodiment of the present application. [Specific implementation method]

[0022] The following is a preferred embodiment of the present invention. The following embodiments are only used to illustrate the technical features of the present invention and are not intended to limit the present invention. The protection scope of the present invention shall be determined by the claims.

[0023] Figure 2 is a block diagram of a wireless communication system according to an embodiment of the present application.

[0024] like Figure 2 As shown, the wireless communication system 200 includes an access point (AP) 210 and a plurality of stations (STAs) 1 to 7. The AP 210 is an entity compliant with the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard to provide and manage access to a wireless medium for the STAs 1 to 7.

[0025] In one embodiment, the AP 210 may be an Extremely High Throughput (EHT) AP compatible with the IEEE 802.11be standard.

[0026] In another embodiment, AP 210 may be an AP compatible with any IEEE 802.11 standard after 802.11be.

[0027] Each of STA 1-7 may be a mobile phone (e.g., a feature phone or a smartphone), a tablet personal computer (PC), a laptop computer, or any computing device as long as it is compatible with the same IEEE 802.11 standard as the AP 210. Each of STA 1-7 may be associated with the AP 210 and communicate with the AP 210 to send or receive data in an uplink (UL) or downlink (DL) multi-user physical layer protocol data unit (Multi-User-Physical layer Protocol Data Unit, abbreviated as MU-PPDU).

[0028] At a given time point, multiple STAs in the wireless communication system 100 It may be desirable to send / receive data. Instead of scheduling the media access of STAs 1-7 in respective different UL / DL time intervals, AP 210 may schedule the media access of STAs 1-7 to support the UL / DL MU transmission technology, according to which STAs 1-7 may simultaneously send / receive MU-PPDUs to AP 210 in a given time interval.

[0029] For example, by using DL MU OFDMA technology during a given DL time interval, STA A DL MU-PPDU may be received from the AP 210 , and in each DL MU-PPDU, the same or different resource units (RUs) may be allocated to STAs 1 ˜ 7 .

[0030] In another example, by using UL MU Multiple-Input Multiple-Output (MU-MIMO) technology during a given UL time interval, the STA UL MU-PPDUs may be transmitted to the AP 210 via different corresponding spatial streams allocated by the AP 210, and in each UL MU-PPDU, the same or different RUs may be allocated to the STAs 1 to 7.

[0031] More specifically, each RU in a MU-PPDU can be divided into one or more user blocks, and each user block is allocated to a corresponding STA for OFDMA transmission or reception, that is, multiple STAs are allowed to share one RU in one MU-PPDU.

[0032] To manage RU allocation within the MU-PPDU, the AP 210 may provide allocation information indicating user blocks of multiple STAs in each RU of the MU-PPDU.

[0033] In one embodiment, the allocation information may be provided in the header of the DL MU-PPDU.

[0034] In another embodiment, the allocation information may be provided in a trigger frame of the UL PPDU prior to UL transmission of STAs 1-7.

[0035] It should be understood that Figure 2 The components described in the embodiments are for illustration purposes only and are not intended to limit the scope of the present application. For example, the wireless communication system 200 may include more or fewer STAs.

[0036] Figure 3 A block diagram of a STA according to an embodiment of the present application is shown.

[0037] like Figure 3 As shown, the STA may include a wireless transceiver 10 , a processor 20 , a storage device 30 , a display device 40 , and an input / output (I / O) device 50 .

[0038] The wireless transceiver 10 is configured to perform wireless transmission and reception to and from the AP 210. For example, the wireless transceiver 10 may be a Wi-Fi chip.

[0039] Specifically, the wireless transceiver 10 may include a baseband processing device 11, a radio frequency (RF) device 12, and an antenna 13, wherein the antenna 13 may include an antenna array for UL / DL multiple-input multiple-output (MIMO).

[0040] The baseband processing device 11 is used to perform baseband signal processing, such as analog-to-digital conversion (ADC) / digital-to-analog conversion (DAC), gain adjustment, modulation / demodulation, encoding / decoding, etc. The baseband processing device 11 may include multiple hardware components, such as a baseband processor, to perform baseband signal processing.

[0041] The RF device 12 may receive an RF wireless signal through the antenna 13, convert the received RF wireless signal into a baseband signal, and process it by the baseband processing device 11, or receive a baseband signal from the baseband processing device 11 and convert the received baseband signal into a radio frequency wireless signal, and then transmit it through the antenna 13. The RF device 12 may also include multiple hardware devices to perform radio frequency conversion. For example, the RF device 12 may include a mixer to multiply the baseband signal with a carrier oscillating in the radio frequency of the supported cellular technology, where the radio frequency may be 2.4 GHz, 5 GHz, or 60 GHz used in Wi-Fi technology, or any radio frequency used in future developments of Wi-Fi technology.

[0042] The processor 20 may be a general-purpose processor, a microcontroller unit (MCU), an application processor, a digital signal processor (DSP), a graphics processing unit (GPU), a holographic processing unit (HPU), a neural processing unit (NPU), etc., and includes functions for providing data processing and computing, controlling the wireless transceiver 10 to wirelessly communicate with the AP 210, storing and retrieving data (e.g., program code) to and from the storage device 30, sending a series of frame data (e.g., representing text messages, graphics, images, etc.) to the display device 40, and receiving user input or output signals through the I / O device 50.

[0043] In particular, the processor 20 coordinates the aforementioned operations of the wireless transceiver 10 , the storage device 30 , the display device 40 , and the I / O device 50 to execute the method of the present application.

[0044] In another embodiment, the processor 20 may be incorporated into the baseband processing device 11 to function as a baseband processor.

[0045] As will be appreciated by those skilled in the art, the circuitry of the processor 20 may include transistors configured to control the operation of the circuitry in accordance with the functions and operations described herein. As will be further appreciated, the specific structure or interconnection of the transistors may be determined by a compiler, such as a register transfer language (RTL) compiler. The RTL compiler may be operated by the processor based on a script that is very similar to assembly language code to compile the script into a form for layout or manufacture of the final circuit. In fact, RTL is well known for its role and use in facilitating the design process of electronic and digital systems.

[0046] The storage device 30 may be a non-volatile machine-readable storage medium, including a memory such as flash memory or non-volatile random access memory (NVRAM), or a magnetic storage device, such as a hard disk or magnetic tape, or an optical disk, or any combination thereof for storing data, instructions and / or application programs, communication protocols and / or program code of the present method.

[0047] The display device 40 may be a liquid crystal display (LCD), a light emitting diode (LED) display, an organic light emitting diode (OLED) display, or an electronic paper display (EPD), etc., for providing a display function. Alternatively, the display device 40 may also include one or more touch sensors for sensing the touch, contact, or proximity of an object such as a finger or a stylus.

[0048] The I / O device 50 may include one or more buttons, keyboards, mice, touch pads, cameras, microphones, and / or speakers, etc., as a man-machine interface (MMI) for interacting with a user.

[0049] It should be understood that Figure 3 The components described in the embodiments are for illustration purposes only and are not intended to limit the scope of the present application. For example, a STA may include more components, such as another wireless transceiver for providing telecommunication services, a global positioning system (GPS) device for using certain location-based services or applications, and / or a power supply for powering other components of the STA. Alternatively, a STA may include fewer components. For example, a STA may not include a display device 40 and / or an I / O device 50.

[0050] Figure 4 A block diagram of an AP according to an embodiment of the present application is shown.

[0051] like Figure 4 As shown, the AP may include a wireless transceiver 60 , a processor 70 , and a storage device 80 .

[0052] The wireless transceiver 60 is configured to perform communication to and from one or more STAs (eg, STA ) for wireless transmission and reception. For example, the wireless transceiver 60 may be a Wi-Fi chip.

[0053] Specifically, the wireless transceiver 60 may include a baseband processing device 61, an RF device 62, and an antenna 63, wherein the antenna 63 may include an antenna array for UL / DL MU-MIMO.

[0054] The baseband processing device 61 is used to perform baseband signal processing such as ADC / DAC, gain adjustment, modulation / demodulation, encoding / decoding, etc. The baseband processing device 61 may include multiple hardware components, such as a baseband processor, to perform baseband signal processing.

[0055] The RF device 62 may receive an RF wireless signal through an antenna 63, convert the received RF wireless signal into a baseband signal, and process it through the baseband processing device 61, or receive a baseband signal from the baseband processing device 61 and convert the received baseband signal into a radio frequency wireless signal, and then transmit it through the antenna 63. The RF device 62 may also include multiple hardware devices to perform radio frequency conversion. For example, the RF device 62 may include a mixer to multiply the baseband signal with a carrier oscillating in the radio frequency of the supported cellular technology, where the radio frequency may be 2.4 GHz, 5 GHz, or 60 GHz used in Wi-Fi technology, or any radio frequency used in future developments of Wi-Fi technology.

[0056] The processor 70 can be a general-purpose processor, MCU, application processor, DSP, GPH / HPU / NPU, etc., which includes various circuits that provide functions such as data processing and calculation, controlling the wireless transceiver 60 to communicate wirelessly with STA 1~7, and storing and retrieving data (for example, program code) to and from the storage device 80.

[0057] In particular, the processor 70 coordinates the aforementioned operations of the wireless transceiver 60 and the storage device 80 to execute the method of the present application.

[0058] In another embodiment, the processor 70 may be incorporated into the baseband processing device 61 to function as a baseband processor.

[0059] As will be appreciated by those skilled in the art, the circuitry of the processor 70 may include transistors configured to control the operation of the circuitry in accordance with the functions and operations described herein. As will be further appreciated, the specific structure or interconnection of the transistors may be determined by a compiler, such as an RTL compiler. The RTL compiler may be operated by the processor according to a script that is very similar to assembly language code to compile the script into a form for layout or manufacture of the final circuit. In fact, RTL is well known for its role and use in facilitating the design process of electronic and digital systems.

[0060] The storage device 80 can be a non-volatile machine-readable storage medium, including a memory, such as FLASH memory or NVRAM, or a magnetic storage device, such as a hard disk or a tape, or an optical disk, or any combination of program codes for storing data, instructions and / or applications, communication protocols and / or methods of the present application.

[0061] It should be understood that Figure 4 The components described in the embodiments are for illustration purposes only and are not intended to limit the scope of the present application. For example, the AP may include more components, such as a display device for providing a display function, and / or an I / O device for providing an MMI for interaction with a user.

[0062] Figure 5 This is a schematic diagram of RU allocation of DL / UL MU-PPDU in an embodiment of the present application.

[0063] like Figure 5 As shown, the data field of the MU-PPDU may include multiple RUs (e.g., 4 RUs).

[0064] Each RU represents a set of 78.125KHz bandwidth subcarriers (frequency modulation) used in DL / UL transmission. Using OFDMA, different transmit powers can be applied to different RUs. Although 4 RUs are illustrated in this embodiment for ease of explanation, there can be up to 9 RUs for 20MHz bandwidth, up to 18 RUs in the case of 40MHz, or more in the case of 80 or 160MHz bandwidth. RU enables an AP (e.g., AP 210) to allow multiple STAs to access it simultaneously and efficiently.

[0065] Specifically, RU1 is allocated to STA 1 alone, RU2 is allocated to STA 2 and 5, RU3 is allocated to STA 3 and 6, and RU4 is allocated to STA 4 and 7. For further explanation, each of RU2 to RU4 is divided into multiple user blocks, and each user block is allocated to a respective STA. In other words, multiple STAs are allowed to share a single RU in a MU-PPDU.

[0066] It should be noted that compared with the RU allocation used in traditional practice (such as Figure 1 As shown in FIG. 1 , the time-frequency resources not used by the first STA in each RU are allocated to another STA for use instead of being inserted with padding bits.

[0067] Figure 6 This is a schematic diagram of RU allocation of DL MU-PPDU in an embodiment of the present application.

[0068] like Figure 6 As shown, the data field of the DL MU-PPDU may include multiple RUs (e.g., 4 RUs). Specifically, RU1 is allocated to STAs 1 and 2, RU2 is allocated to STAs 2 and 5, RU3 is allocated to STAs 3, 4, and 6, and RU4 is allocated to STAs 4 and 7.

[0069] It should be noted that, in this embodiment, multiple user blocks of different RUs can be allocated to a STA, and user blocks for the same STA in different RUs are allowed to overlap in the time domain. For example, STA 2 is allocated the second user block in RU1 and the first user block in RU2, wherein the user block of STA 2 in RU1 and the user block of STA2 in RU2 overlap in the time domain.

[0070] Alternatively, the user blocks for the same STA in different RUs may not overlap in the time domain. For example, STA 4 is allocated the second user block in RU3 and the first user block in RU4, wherein the user block of STA 4 in RU3 and the user block of STA 4 in RU4 do not overlap in the time domain.

[0071] It should be understood that for all STAs in a DL MU-PPDU, the rules for whether to allow user blocks of the same STA in different RUs to overlap in the time domain can remain the same. That is, in one embodiment, user blocks of the same STA in different RUs of a DL MU-PPDU are allowed to overlap in the time domain, while in another embodiment, user blocks of the same STA in different RUs of a DL MU-PPDU are not allowed to overlap in the time domain.

[0072] Figure 7 A schematic diagram of providing allocation information of RU allocation in a header of a DL MU-PPDU according to an embodiment of the present application.

[0073] like Figure 7 As shown, the header of the DL MU-PPDU may include a legacy (non-EHT) preamble and an EHT preamble. The legacy preamble may include L-STF, L-LTF, and L-SIG, each of which may be decoded by legacy devices and are included for backward compatibility and coexistence with legacy devices, while the EHT preamble can only be decoded by 802.11be devices.

[0074] Specifically, the EHT preamble code may include RL-SIG, EHT-SIG-A, EHT-SIG-B, EHT-STF, and EHT-LTF, wherein allocation information for RU allocation may be provided in the EHT-SIG-B field.

[0075] The EHT-SIG-B field may include a common field and a user-specific field. For the MU-MIMO case or the MU-OFDMA multiplexing case, the common field may include an RU allocation subfield to specify the RU allocation for each 20 MHz bandwidth segment and the number of users per RU.

[0076] The RU allocation subfield in the common field of the EHT-SIG-B may consist of 8 bits, which indicate this information for each 20 MHz PPDU bandwidth.

[0077] It should be noted that in the present application, an additional bit is added to each RU allocation subfield, and the additional bit is used to indicate MU-OFDMA multiplexing. For example, an additional bit can be added to the beginning of the RU allocation subfield. If the bit is set, it indicates that MU-OFDMA multiplexing with flexible RU allocation is enabled, and the remaining bits indicate the RU allocation and the number of users (ie, STAs) per RU. Otherwise, if the bit is not set, it indicates that MU-OFDMA multiplexing with flexible RU allocation is disabled.

[0078] The user specific field may include multiple user block fields, each of which includes two new subfields to indicate the start symbol number (start symbol number) and the end symbol number (end symbol number) of each user block in the RU.

[0079] Allocation information for RU allocation of DL MU-PPDU is determined using the enhanced RU allocation subfield and the enhanced user block field.

[0080] Figure 8 This is a schematic diagram of RU allocation of UL MU-PPDU in an embodiment of the present application.

[0081] like Figure 8 As shown, the data field of the UL MU-PPDU may include multiple RUs (e.g., 4 RUs). Specifically, RU1 is allocated to STA1 alone, RU2 is allocated to STAs 2 and 5, RU3 is allocated to STAs 3 and 4, and RU4 is allocated to STAs 4 and 6.

[0082] Please note that in this embodiment, a STA can be allocated with multiple user blocks of different RUs, and the user blocks of different RUs of the same STA are not allowed to overlap in the time domain. For example, STA 4 is allocated with the second user block in RU3 and the first user block in RU4, wherein the user block of STA 4 in RU3 and the user block of STA4 in RU4 do not overlap in the time domain.

[0083] In addition, the short training field (STF) and the long training field (LTF) may be used to separate user blocks allocated to different STAs in the same RU to clarify the boundaries of user blocks of different STAs.

[0084] Fig. 9 A schematic diagram of providing allocation information of RU allocation in a trigger frame of a PPDU in an embodiment of the present application.

[0085] The AP may send a trigger frame to multiple STAs to trigger them to send data in a UL MU-PPDU.

[0086] like Fig. 9As shown, the trigger frame may include a common information field and a user information field. The user information field may include multiple subfields, which may be Figure 7 The RU allocation subfield may be enhanced as in the embodiment of the present invention, and multiple new subfields may be introduced to indicate the start symbol number (start symbol number) and the end symbol number (end symbol number) of each user block in the RU of the UL MU-PPDU.

[0087] In view of the foregoing embodiments, it should be understood that the present application implements flexible RU allocation in an IEEE 802.11 (e.g., 802.11be) system by allowing multiple STAs to share one RU in a MU-PPDU. Advantageously, each RU can be more efficiently used among multiple STAs aggregated in a MU-PPDU for OFDMA transmission, thereby improving radio resource utilization and overall system performance.

[0088] Although the present application has been described by way of examples and preferred embodiments, it should be understood that the present application is not limited thereto. Without departing from the scope and spirit of the present application, those skilled in the art can still make various changes and modifications. Therefore, the scope of the present application should be defined and protected by the appended claims and their equivalents.

[0089] The use of ordinal terms such as "first," "second," and the like in the claims to modify claim elements does not by itself imply any priority, precedence, or order or chronological order of one claim element over another claim element in which the action of a method is performed, but serves merely as a label to distinguish one claim element having a particular name from another element having the same name (but used in ordinal terms) to distinguish the claim elements.

Claims

1. A station for communicating with an access point in a wireless communication system, the station comprising: A wireless transceiver, used for wireless transmission and reception with the access point; as well as Processor, configured as: receiving, from the access point via the wireless transceiver, allocation information indicating a first user block of a station in a first resource unit of a multi-user physical layer protocol data unit, wherein the first resource unit includes a plurality of user blocks allocated to different stations; as well as According to the allocation information, uplink data in the first user block is sent to the access point or downlink data in the first user block is received from the access point by the wireless transceiver, wherein the allocation information includes: a starting symbol number of the first user block of the station in the first resource unit; as well as The ending symbol number of the first user block of the station in the first resource unit.

2. The station as claimed in claim 1, wherein the allocation information is received in a header of a downlink multi-user physical layer protocol data unit or a trigger frame of a physical layer protocol data unit.

3. The station of claim 2, wherein: The allocation information is contained in the very high throughput signaling B field in the header of the downlink multi-user physical layer protocol data unit or in the user information field in the trigger frame of the physical layer protocol data unit.

4. The station of claim 1, wherein: The allocation information also indicates a second user block of the station in a second resource unit of the multi-user physical layer protocol data unit, and the processor is further used to send uplink data in the second user block to the access point or receive downlink data in the second user block from the access point through the wireless transceiver according to the allocation information.

5. The station of claim 4, wherein: In response to the multi-user physical layer protocol data unit being a downlink multi-user physical layer protocol data unit, the first user block and the second user block of the station overlap in the time domain.

6. The station of claim 4, wherein in response to the multi-user physical layer protocol data unit being a downlink multi-user physical layer protocol data unit or an uplink multi-user physical layer protocol data unit, the first user block and the second user block of the station do not overlap in the time domain.

7. The station of claim 1, wherein in response to the multi-user physical layer protocol data unit being an uplink multi-user physical layer protocol data unit, the plurality of user blocks allocated to different stations are separated by a short training field and a long training field in the first resource unit.

8. The station of claim 1, wherein the wireless communication system is compatible with the Institute of Electrical and Electronics Engineers 802.11 standard.

9. A communication method, executed by a station, for communicating with an access point in a wireless communication system, the communication method comprising: receiving, from the access point, allocation information indicating a first user block for the station in a first resource unit of a multi-user physical layer protocol data unit, wherein the first resource unit includes a plurality of user blocks allocated for different stations; as well as Sending uplink data in the first user block to the access point or receiving downlink data in the first user block from the access point according to the allocation information, wherein the allocation information includes: a starting symbol number of the first user block of the station in the first resource unit; as well as The ending symbol number of the first user block of the station in the first resource unit.

10. The communication method according to claim 9, wherein: The allocation information is received in a header of a downlink multi-user physical layer protocol data unit or a trigger frame of a physical layer protocol data unit.

11. The communication method according to claim 10, wherein: The allocation information is contained in an extremely high throughput signaling B field in the header of the downlink multi-user physical layer protocol data unit or in a user information field in the trigger frame of the physical layer protocol data unit.

12. The communication method according to claim 9, wherein: The allocation information further indicates a second user block of the station in a second resource unit of the multi-user physical layer protocol data unit, the method further comprising: According to the allocation information, uplink data in the second user block is sent to the access point or downlink data in the second user block is received from the access point.

13. The communication method according to claim 12, wherein: In response to the multi-user physical layer protocol data unit being a downlink multi-user physical layer protocol data unit, the first user block and the second user block of the station overlap in the time domain.

14. The communication method according to claim 12, wherein: In response to the multi-user physical layer protocol data unit being a downlink multi-user physical layer protocol data unit or an uplink multi-user physical layer protocol data unit, the first user block and the second user block of the station do not overlap in the time domain.

15. The communication method of claim 9, wherein in response to the multi-user physical layer protocol data unit being an uplink multi-user physical layer protocol data unit, the plurality of user blocks allocated to different stations are separated by a short training field and a long training field in the first resource unit.

16. The communication method of claim 9, wherein the wireless communication system is compatible with the Institute of Electrical and Electronics Engineers 802.11 standard.

17. An access point for communicating with a station in a wireless communication system, the access point comprising: a wireless transceiver for wirelessly transmitting and receiving with the station; as well as Processor, configured as: transmitting, via the wireless transceiver, to the station allocation information indicating a plurality of user blocks allocated for the station in a plurality of resource units of a multi-user physical layer protocol data unit, wherein at least one resource unit includes a plurality of user blocks allocated to different stations; as well as sending downlink data in a corresponding user block to the station or receiving uplink data in a corresponding user block from the station via the wireless transceiver, wherein the allocation information includes: The starting symbol number of a user block in the resource unit; as well as The ending symbol number of a user block in this resource unit.

18. The access point of claim 17, wherein: The allocation information is sent in a header of a downlink multi-user physical layer protocol data unit or a trigger frame of a physical layer protocol data unit.

19. The access point of claim 18, wherein: The allocation information is contained in an extremely high throughput signaling B field in the header of the downlink multi-user physical layer protocol data unit or in a user information field in the trigger frame of the physical layer protocol data unit.

20. The access point of claim 17, wherein: In response to the multi-user physical layer protocol data unit being a downlink multi-user physical layer protocol data unit, at least two of the plurality of user blocks are allocated to the same station in different resource units, and the at least two user blocks of the same station overlap in the time domain.

21. The access point of claim 17, wherein: In response to the multi-user physical layer protocol data unit being a downlink multi-user physical layer protocol data unit or an uplink multi-user physical layer protocol data unit, at least two of the plurality of user blocks are allocated to the same station in different resource units, and the at least two user blocks of the same station do not overlap in the time domain.

22. The access point of claim 17, wherein in response to the multi-user physical layer protocol data unit being an uplink multi-user physical layer protocol data unit, the plurality of user blocks allocated to different stations are separated by a short training field and a long training field in the first resource unit.

23. The access point of claim 17, wherein the wireless communication system is compatible with the Institute of Electrical and Electronics Engineers 802.11 standard.

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