RESOURCE ALLOCATION METHOD, COMMUNICATION APPARATUS AND RELATED DEVICE

Abstract

This application provides a resource allocation method, a communication apparatus, and a related device. In the method, a trigger frame sent by an access point to a station includes a plurality of user information fields that are equal to a station association identifier, and each user information field indicates one or more resource units allocated to the station, to host a plurality of resource units to the station. The trigger frame includes a user information field that is the same as a station association identifier, and the user information field can indicate a plurality of resource units allocated to the station, to allocate the plurality of resource units to the station.The user information field can include an indication of a combination of resource units; that is, a resource unit allocation subfield in the trigger frame is redesigned so that the user information field can indicate a combination of multiple resource units. The technical solutions provided in this application can be applied to Wi-Fi systems such as 802.11ax and 802.11be. This can efficiently implement the allocation and indication of multiple resource units.

Description

RESOURCE ALLOCATION METHOD, COMMUNICATION DEVICE AND RELATED DEVICE FIELD OF THE INVENTION This application relates to the field of communication technologies and, in particular, to a method of resource allocation, a communication apparatus, and a related device. BACKGROUND OF THE INVENTION In a conventional wireless local area network (WLAN), when each station (station) needs to send uplink data, the station occupies a full channel for data transmission in the form of contention, and consequently, Frequency utilization efficiency is greatly reduced. To improve this situation, currently, OFDMA technology is used to divide a radio channel into a plurality of subchannels (subcarriers) in the frequency domain, to form resource units (RU). User data is carried in a part of the resource units instead of occupying the entire channel, so that a plurality of users can perform parallel transmissions simultaneously in each time period without queuing or competing with each other. This improves frequency utilization efficiency. In a downlink, an access point (AP) can determine, based on the priority of the downlink data of each station, an allocation status of an RU. However, in an uplink, the AP must notify, via a trigger frame, a terminal device of an assigned resource unit. The trigger frame includes a plurality of user information fields, and a user information field includes information that a station needs to read. For example, M user information fields are information that a station 1 to a station M need to read respectively. A resource unit assignment subfield in the user information field indicates a resource unit assigned to the station. Additionally, the station can send a data packet to the assigned resource unit. However, the data sizes that stations need to transmit in an uplink are different, and how to allocate a plurality of resource units to a station is an urgent problem that needs to be solved. BRIEF DESCRIPTION OF THE INVENTION This application provides a resource allocation method, a communication apparatus and a related device for allocating a plurality of resource units to each station. According to a first aspect, this application provides a resource allocation method. In the method, a station receives a trigger frame from an access point. The trigger frame includes a plurality of user information fields that are equal to an association identifier of the station, and each user information field indicates one or more resource units assigned to the station. Therefore, the station may determine the one or more resource units indicated by each of the plurality of user information fields as a plurality of allocated resource units. In another possible design, the trigger frame includes a user information field that is the same as an association identifier of the station, and the user information field indicates a plurality of resource units assigned to the station, to allocate the plurality of resource units to the station. In the design, the plurality of resource units are assigned to the station using one user information field, so that the number of required user information fields is reduced. This helps to simultaneously assign a plurality of resource units to a plurality of stations. In a possible implementation, the station determining the plurality of allocated resource units based on the trigger frame includes: the station selecting, from the trigger frame, one or more user information fields that are the same as the identifier station association. For each one or more selected user information fields, the station determines one or more resource units indicated by the user information field. The one or more resource units indicated by each of the one or more selected user information fields are the plurality of resource units assigned to the station. The user information field in the trigger frame can be implemented into a user information list field. Therefore, the implementation may alternatively be: select, from the user information list field, one or more user information fields that are the same as the station association identifier. For a specific way where the station selects one or more user information fields from the user information list field, see the four possible optional implementations below. Alternatively, all four possible implementations can be used in combination. This is not limited in this application. In a possible implementation, the station separately parses an association identifier indicated by an association identifier field in each of all user information fields in the trigger frame; and selects, from all the parsed user information fields, one or more user information domains that are the same as the association identifier of the station. All information fields User ΜΛ / t / ZUZZ / U í UO JO can be implemented in the user information list field. The station can parse all user information fields based on a field boundary of the user information list. It can be seen that the user information list field does not need to be modified in this way, so the resource allocation method has better compatibility. In another possible implementation, the access point may configure N for the station in a manner predefined by the protocol or through signaling, where N is a number of user information fields included in the trigger frame that are the same as the identifier station association. Alternatively, the access point may configure, in a predefined manner by protocol or by signaling, a number N1 of resource units that can be assigned to the station and a number N2 of resource units that can be indicated in each information field of the station. user. In this case, a number N of user information fields included in the trigger frame that are equal to the station association identifier may be equal to N1 / N2. In the implementation, the station selecting, from the trigger frame, one or more user information fields that are the same as the station's association identifier includes: the station parses, based on an index of each user information field user information in the trigger frame, if an association identifier indicated by an association identifier field in each user information field is the same as the association identifier of the station, and stops performing the step of analyzing whether an association identifier indicated by an association identifier field in each user information field is the same as the association identifier of the station, until a number of user information fields that are equal to the association identifier of the station be equal to N; and selects, from all the user information fields analyzed, N user information fields that are the same as the association identifier of the station. It can be seen that a number of user information fields analyzed by the station can be reduced in the implementation. This helps reduce the processing load on the station. In yet another possible implementation, the user information field may include a completion flag. The completion flag can be set by using a newly added bit in the user information field, by reusing another information field, or by using a reserved field. The completion flag indicates whether the assignment of the resource unit to the station is completed. It can be seen that a number of user information fields analyzed by the station can be further reduced in the implementation. This helps reduce the processing load on the station. ΜΛ / t / ZUZZ / U í UO JO The station selecting, from the trigger frame, one or more user information fields that are the same as the station's association identifier includes: the station parses, based on an index of each user information field in the trigger frame, whether an association identifier indicated by an association identifier field in each user information field is the same as the association identifier of the station, and stops performing the step of analyzing whether an association identifier indicated by an association identifier field in each user information field is the same as the association identifier of the station, until an end flag in a parsed user information field indicates that the allocation of the resource unit to station; and selects, from all the user information fields analyzed, one or more user information fields that are the same as the association identifier of the station. In yet another possible implementation, the station selecting, from the trigger frame, one or more user information fields that are equal to the station's association identifier includes: the station parses, based on an index of each field of user information and starting from a first user information field, in the trigger frame, which is the same as the association identifier of the station, if an association identifier indicated by an association identifier field in each user information field is the same as the station association identifier, until a user information field different from the station association identifier is parsed; and selects, from all the user information fields analyzed, one or more user information fields that are the same as the association identifier of the station. In this implementation, a plurality of user information fields corresponding to each station can be continuously distributed in the user information list field of the trigger frame, so that the analysis complexity of the station can be greatly reduced. The following describes, using some optional implementations, how the user information field indicates one or more resource units, and how the station determines one or more resource units indicated by each user information field. In a possible implementation, the user information field includes a resource unit indication. The station determining a plurality of resource units indicated by the user information field includes: the station determining the plurality of resource units indicated by the resource unit indication in the user information field. It can be seen that the resource unit indication can indicate the plurality of resource units in the implementation. ΜΛ / í UO JO Optionally, the plurality of resource units indicated by the resource unit indication is a plurality of resource units corresponding to any of the following combinations: a combination of two first resource units, wherein the first resource unit is a resource unit that includes 996 subcarriers; a combination of four first resort units; a combination of two first resource units at the lowest frequency and a first resource unit at the highest frequency in a frequency band range of 320 MHz; a combination of a first resource unit at the lowest frequency and two first resource units at the highest frequency in a frequency band range of 320 MHz; a combination of first three resource units at a lower frequency in a frequency band interval of 320 MHz; a combination of first three resource units at a higher frequency in a frequency band interval of 320 MHz; a combination of two first resource units, wherein the first resource unit is a resource unit that includes 996 subcarriers; and a combination of four first resort units. In another possible implementation, the user information field includes a frequency band interval indication and a resource unit indication. The frequency band interval indication indicates a frequency band interval of 80 MHz in one bandwidth, and the resource unit indication indicates a resource unit. The station determining a resource unit indicated by the user information field includes: the station determining, based on the frequency band interval indicated by the frequency band interval indication, the resource unit indicated by the indication of resource unit. It can be seen that each of the plurality of user information fields selected by the station indicates a resource unit, so that the plurality of resource units assigned to the station can be obtained. It can be seen that in the implementation, regardless of a bandwidth interval of a combination of resource units and a number of required RUs, a number of user information fields can respectively indicate an equal number of RUs. Optionally, the resource unit indicated by the resource unit indication is any of the following resource units: any seventh resource unit, where the seventh resource unit is a ΜΛ / t / ZUZZ / U í UO JO resource unit including 2 x 996 subcarriers; any sixth resource unit in the frequency band slot indicated by the frequency band slot indication, wherein the sixth resource unit is a resource unit including 52 subcarriers; any fifth resource unit in the frequency band slot indicated by the frequency band slot indication, wherein the fifth resource unit is a resource unit including 26 subcarriers; any fourth resource unit in the frequency band interval indicated by the frequency band interval indication, wherein the fourth resource unit is a resource unit that includes 106 subcarriers; any third resource unit in the frequency band slot indicated by the frequency band slot indication, wherein the third resource unit is a resource unit including 242 subcarriers; any second resource unit in the frequency band slot indicated by the frequency band slot indication, wherein the second resource unit is a resource unit including 484 subcarriers; and any first resource unit in the frequency band interval indicated by the frequency band interval indication, wherein the first resource unit is a resource unit that includes 996 subcarriers. In yet another implementation, the resource unit indication indicates the plurality of resource units. In other words, the station determines, based on the frequency band interval indicated by the frequency band interval indication, the plurality of resource units indicated by the resource unit indication. The station may be notified, in the form of a predefined protocol or in the form of a signaling configuration, of a correspondence between indices or values ​​of the resource unit indication and combinations of the plurality of resource units. It can be seen that in the implementation, regardless of the bandwidth interval of a combination of resource units, a user information field can indicate a plurality of resource units. Optionally, a manner is used where one user information field is needed to indicate every 80 MHz. In this case, a maximum of two user information fields are needed to indicate a combination of RUs in a band slot. frequency greater than 80 MHz and less than or equal to 160 MHz. A maximum of four user information fields are required to indicate a combination of RUs in a frequency band interval greater than 160 MHz and less than or equal to 320 MHz. Alternatively, a way is used where a user information field is needed to indicate every 160 MHz. ΜΛ / í UO JO In this case, a maximum of one user information field is needed to indicate a combination of RUs in a frequency band interval less than or equal to 160 MHz. A maximum of two user information fields are needed to indicate a combination of RU in a frequency band interval greater than 160 MHz and less than or equal to 320 MHz. Additionally, when three 996-tone RUs are combined, each 996-tone RU is indicated by a user information field, and three user information fields may be required to indicate the combination of the three 996-tone RUs. When four RUs are combined in a 160 MHz frequency band interval, for example, a 484-tone RU, a 242-tone RU, a 484-tone RU, and a 242-tone RU, an information field of user to indicate every 80 MHz, to indicate a combination of a 484-tone RU and a 242-tone RU. In this case, two user information fields can indicate the combination of the four RUs. Optionally, the plurality of resource units indicated by the resource unit indication is a plurality of resource units corresponding to any of the following combinations: a combination of a fourth resource unit at a lower frequency in a frequency band interval of 20 MHz indicated by the frequency band interval indication and a fifth resource unit in a center of the frequency band interval of 20 MHz; a combination of a fourth resource unit at the highest frequency in a 20 MHz frequency band interval and a fifth resource unit in a center of the 20 MHz frequency band interval; a combination of a sixth resource unit at the second lowest frequency in a 20 MHz frequency band interval and a fifth resource unit, in the 20 MHz frequency band interval, which is on the same side and adjacent to the sixth resource unit; a combination of a sixth resource unit at a second lower frequency in a 20 MHz frequency band interval and a fifth resource unit in a center of the 20 MHz frequency band interval; a combination of a sixth resource unit at a second higher frequency in a 20 MHz frequency band interval and a fifth resource unit, in the 20 MHz frequency band interval, which is on the same side and adjacent to the sixth resource unit; a combination of a sixth resource unit at a second higher frequency in a 20 MHz frequency band interval and a fifth resource unit in a center of the 20 MHz frequency band interval; a combination of a second resource unit in the frequency band interval and a third resource unit adjacent to the second resource unit; a combination of a second resource unit in the frequency band interval and a third resource unit that is not adjacent to the second resource unit; a combination of two third resource units on two sides of the frequency band interval; a combination of a first resource unit corresponding to the frequency band slot and a second resource unit that is at a lower frequency of 80 MHz adjacent to the first resource unit and that is not adjacent to the first resource unit; a combination of a first resource unit corresponding to the frequency band slot and a second resource unit that is at a higher frequency of 80 MHz adjacent to the first resource unit and that is not adjacent to the first resource unit; a combination of a first resource unit corresponding to the frequency band slot and a second resource unit and a third resource unit that are at a lower frequency of 80 MHz adjacent to the first resource unit and that are adjacent to the first resource unit; a combination of a first resource unit corresponding to the frequency band slot and a second resource unit and a third resource unit that are at a higher frequency of 80 MHz adjacent to the first resource unit and that are adjacent to the first resource unit; a combination of a first resource unit corresponding to the frequency band slot and two third resource units at a lower frequency of 80 MHz adjacent to the first resource unit; a combination of a first resource unit corresponding to the frequency band slot and two third resource units at a higher frequency of 80 MHz adjacent to the first resource unit; a combination of a second resource unit and a third resource unit that are in the frequency band range and a second resource unit and a third resource unit that are in a lower frequency band range adjacent to the range of frequency bands; and a combination of a second resource unit and a third resource unit that are located in the frequency band interval and a second resource unit and a third resource unit that are located in a frequency band interval ΜΛ / í UO JO upper adjacent to the frequency band interval. The sixth resource unit is a resource unit including 52 subcarriers, the fifth resource unit is a resource unit including 26 subcarriers, the fourth resource unit is a resource unit including 106 subcarriers, the third resource unit is a resource unit that includes 242 subcarriers, the second resource unit is a resource unit that includes 484 subcarriers, and the first resource unit is a resource unit that includes 996 subcarriers. It can be seen that in the implementation, regardless of the bandwidth range of a RU combination, a user information field can be used for indication. In yet another possible implementation, the user information field includes a frequency band slot indication, a resource unit indication, and a resource unit combination indication. The frequency band interval indication indicates a frequency band interval of 80 MHz in a bandwidth, the resource unit indication indicates a resource unit in the frequency band interval, and the combination unit indication indicates resource indicates a combination of a plurality of resource units. The combination of the plurality of resource units includes the resource unit indicated by the resource unit indication. It can be seen that a resource unit allocation subfield in the user information field can be modified in the implementation, so that the user information field can indicate the combination of the plurality of resource units. It can be seen that in the implementation, regardless of the bandwidth range of a RU combination, a user information field can be used for indication. Optionally, a manner is used where one user information field is needed to indicate every 80 MHz. In this case, a maximum of one user information field is needed to indicate a combination of RUs in a band slot. of frequency less than or equal to 80 MHz. A maximum of two user information fields are required to indicate a combination of RUs in a frequency band range greater than 80 MHz and less than or equal to 160 MHz. A maximum of four user information fields to indicate a combination of RUs in a frequency band range greater than 160 MHz and less than or equal to 320 MHz. Alternatively, a manner is used where one user information field is needed to indicate every 160 MHz. In this case, a maximum of one user information field is needed to indicate a combination of RUs in a frequency band interval. less than or equal to 160 MHz. A maximum of two user information fields are required to indicate a combination of RUs in a frequency band interval greater than 160 MHz and less than or equal to 320 MHz. Additionally, when three 996-tone RUs are combined, each 996-tone RU is indicated by a user information field, and three user information fields may be required to indicate the combination of the three 996-tone RUs. In this case, the implementation where the user information field indicates a resource unit can be used. When four RUs are combined in a 160 MHz frequency band interval, for example, a 484-tone RU, a 242-tone RU, a 484-tone RU, and a 242-tone RU, an information field of user to indicate every 80 MHz, to indicate a combination of a 484-tone RU and a 242-tone RU. In this case, the way that a user information field indicates a plurality of resource units can be used, that is, two user information fields are needed to indicate the combination of the four RUs. Optionally, a manner is used where a user information field is needed to indicate each 160 MHz. In this case, a user information field is needed to indicate the combination of the four RUs. Accordingly, the station determining a plurality of resource units indicated by the user information field includes: the station determining, based on the resource unit combination indication and the resource unit indicated by the resource unit indication resources, the combination of the plurality of resource units as the plurality of resource units indicated by the user information field. Optionally, a correspondence between indices or values ​​of the resource unit combination indication and combinations of the plurality of resource units may be determined in a protocol-predefined manner or in a signaling configuration manner. A possible correspondence is described below. In an optional implementation, the resource unit combination indication indicates a combination of the fourth resource unit and the fifth resource unit. The fourth resource unit is a resource unit that includes 106 subcarriers that is indicated by the resource unit indication, and the fifth resource unit is a resource unit that includes 26 subcarriers that is located at a center of an interval of 20 MHz frequency band where the fourth resource unit is located. In an optional implementation, the resource unit combination indication indicates a combination of the sixth resource unit and the fifth resource unit. The sixth resource unit is a resource unit that includes 52 subcarriers that is indicated by the resource unit indication, and the fifth resource unit is a resource unit that includes 26 subcarriers that is located at a center of an interval of 20 MHz frequency band where the sixth resource unit is located, or a unit of ΜΛ / í UO JO resource that includes 26 subcarriers that is on the same side and is adjacent to the sixth resource unit. In an optional implementation, the resource unit combination indication indicates a combination of the second resource unit and the third resource unit. The second resource unit is a resource unit that includes 484 subcarriers which is indicated by the resource unit indication, and the third resource unit is a resource unit, in the frequency band interval, that includes 242 adjacent subcarriers to the second resource unit, or a resource unit, in the frequency band interval, including 242 subcarriers that are not adjacent to the second resource unit. In an optional implementation, the resource unit combination indication indicates a combination of two third resource units, and the two third resource units are two resource units, each of which includes 242 subcarriers, on the outermost side of the frequency band interval. In an optional implementation, the first resource unit is a resource unit that includes 996 subcarriers which is indicated by the resource unit indication. The resource unit combination indication indicates any of the following combinations of a plurality of resource units: a combination of the first resource unit and the second resource unit, wherein the second resource unit is a resource unit that includes 484 subcarriers that are not adjacent to the first resource unit; a combination of the first resource unit and the third resource unit, wherein the third resource unit is a resource unit that includes 484 subcarriers that is not adjacent to the first resource unit, and a resource unit that includes 242 subcarriers; and a combination of two third resource units, where the two third resource units are two resource units, each of which includes 242 subcarriers, on the outermost side of the frequency band interval. In an optional implementation, the first resource unit is a resource unit that includes 996 subcarriers which is indicated by the resource unit indication. The resource unit combination indication indicates any of the following combinations of a plurality of resource units: a combination of the second resource unit and the first resource unit, wherein the second resource unit is a resource unit that includes 484 subcarriers that is at a lower frequency of 80 MHz adjacent to the first resource unit and that is not adjacent to the first resource unit; a combination of the second resource unit and the first resource unit, wherein the second resource unit is a resource unit that includes 484 subcarriers ΜΛ / t / ZUZZ / U í UO JO which is at a higher frequency than 80 MHz adjacent to the first resource unit and which is not adjacent to the first resource unit; a combination of the second resource unit, the third resource unit and the first resource unit, wherein the second resource unit is a resource unit that includes 484 subcarriers that is at a lower frequency of 80 MHz adjacent to the first resource unit, and the third resource unit is a resource unit that includes 242 subcarriers that is at the lowest frequency of 80 MHz adjacent to the first resource unit; a combination of the second resource unit, the third resource unit and the first resource unit, wherein the second resource unit is a resource unit that includes 484 subcarriers that is at a higher frequency of 80 MHz adjacent to the first resource unit, and the third resource unit is a resource unit that includes 242 subcarriers that is at the highest frequency of 80 MHz adjacent to the first resource unit; and a combination of the first resource unit and two resource units that each include 996 subcarriers and are adjacent to the first resource unit. The frequency band interval indicated by the frequency band interval indication is any of the following: a main frequency band interval of 80 MHz, a secondary frequency band interval of 80 MHz, a third frequency band interval of 80 MHz frequency and a fourth 80 MHz frequency band interval. In this application, a combination solution of a plurality of resource units that can be indicated by the resource unit combination indication is not limited to the above possible implementations. A number of bits occupied by the resource unit combination indication is related to a number of combination solutions that must be indicated. A smaller number of combination solutions that need to be indicated by the resource unit combination indication indicates a lower required bit overhead. In conclusion, a manner wherein the resource unit combination indication indicates a combination of a plurality of resource units can reduce the total overhead of a method for allocating a plurality of resource units. According to a second aspect, this application further provides a resource allocation method. The resource allocation method is described from the perspective of an access point. In the method, an access point determines a plurality of resource units assigned to a station. The access point sends a trigger frame to the station. The trigger frame includes a plurality of user information fields that are equal to an association identifier of the station, and each user information field indicates one or more resource units assigned to the station; or the trigger frame includes a user information field that is the same as an association identifier of the station, and the user information field indicates the plurality of resource units assigned to the station. In a possible implementation, a number N of user information fields are configured for the station in the trigger frame that are equal to the association identifier of the station in a manner predefined by protocol or by signaling. Alternatively, the access point may configure, in a predefined manner by protocol or by signaling, a number N1 of resource units that can be assigned to the station and a number N2 of resource units that can be indicated in each information field of the station. user. In this case, a number N of user information fields included in the trigger frame that are equal to the station association identifier may be equal to N1 / N2. It can be seen that a user information list field does not need to be modified in this way, so that the resource allocation method has better compatibility. In a possible implementation, the user information field includes a completion indicator, and the completion indicator indicates whether the assignment of the resource unit to the station is completed. It can be seen that a number of user information fields analyzed by the station can be reduced in the implementation. This helps reduce the processing load on the station. In a possible implementation, the plurality of user information fields in the trigger frame that are the same as the station association identifier are arranged continuously. It can be seen that a number of user information fields analyzed by the station can be further reduced in the implementation. This helps reduce the processing load on the station. In a possible implementation, the user information field includes a resource unit indication, and the resource unit indication indicates the plurality of resource units assigned to the station. This helps the station determine the plurality of allocated resource units based on the resource unit indication. In another possible implementation, the user information field includes a frequency band interval indication and a resource unit indication, the frequency band interval indication indicating a frequency band interval of 80 MHz in a width of band, and the resource unit indication indicates one or more resource units assigned to the station. This helps the station determine the plurality of resource units allocated based on the information. In yet another possible implementation, the user information field includes a ΜΛ / t / ZUZZ / U í UO JO frequency band interval indication, a resource unit indication and a resource unit combination indication. The frequency band interval indication indicates a frequency band interval of 80 MHz in a bandwidth, the resource unit indication indicates a resource unit in the frequency band interval, and the combination unit indication indicates resource indicates a combination of a plurality of resource units. The combination of the plurality of resource units includes the resource unit indicated by the resource unit indication. It can be seen that a resource unit allocation subfield in the user information field can be modified in the implementation, so that the user information field can indicate the combination of the plurality of resource units. In a possible implementation, the frequency band interval indicated by the frequency band interval indication is any of the following: a primary frequency band interval of 80 MHz, a secondary frequency band interval of 80 MHz, a third 80 MHz frequency band interval and a fourth 80 MHz frequency band interval. This helps the station determine one or more resource units based on the frequency band intervals. In a possible implementation, the resource unit indicated by the resource unit indication is any of the following resource units: any seventh resource unit, where the seventh resource unit is a resource unit that includes 2 x 996 subcarriers ; any sixth resource unit in the frequency band interval indicated by the frequency band interval indication, wherein the sixth resource unit is a resource unit that includes 52 subcarriers; any fifth resource unit in the frequency band slot indicated by the frequency band slot indication, wherein the fifth resource unit is a resource unit including 26 subcarriers; any fourth resource unit in the frequency band slot indicated by the frequency band slot indication, wherein the fourth resource unit is a resource unit including 106 subcarriers; any third resource unit in the frequency band slot indicated by the frequency band slot indication, wherein the third resource unit is a resource unit including 242 subcarriers; any second resource unit in the frequency band slot indicated by the frequency band slot indication, wherein the second resource unit is a resource unit including 484 subcarriers; and any first resource unit in the frequency band interval indicated by the frequency band interval indication, wherein the first resource unit is a resource unit that includes 996 subcarriers. In a possible implementation, the plurality of resource units indicated by the ΜΛ / t / ZUZZ / U í UO JO resource unit indication is a plurality of resource units corresponding to any of the following combinations: a combination of two first resource units, wherein the first resource unit is a resource unit that includes 996 subcarriers; a combination of four first resort units; a combination of a fourth resource unit at a lower frequency in a frequency band interval of 20 MHz indicated by the frequency band interval indication and a fifth resource unit in a center of the frequency band interval of 20 MHz; a combination of a fourth resource unit at the highest frequency in a 20 MHz frequency band interval and a fifth resource unit in a center of the 20 MHz frequency band interval; a combination of a sixth resource unit at the second lowest frequency in a 20 MHz frequency band interval and a fifth resource unit, in the 20 MHz frequency band interval, which is on the same side and adjacent to the sixth resource unit; a combination of a sixth resource unit at a second lower frequency in a 20 MHz frequency band interval and a fifth resource unit in a center of the 20 MHz frequency band interval; a combination of a sixth resource unit at a second higher frequency in a 20 MHz frequency band interval and a fifth resource unit, in the 20 MHz frequency band interval, which is on the same side and adjacent to the sixth resource unit; a combination of a sixth resource unit at a second higher frequency in a 20 MHz frequency band interval and a fifth resource unit in a center of the 20 MHz frequency band interval; a combination of a second resource unit in the frequency band interval and a third resource unit adjacent to the second resource unit; a combination of a second resource unit in the frequency band interval and a third resource unit that is not adjacent to the second resource unit; a combination of two third resource units on two sides of the frequency band interval; a combination of a first resource unit corresponding to the frequency band slot and a second resource unit that is at a lower frequency of 80 MHz adjacent to the first resource unit and that is not adjacent to the first ΜΛ / í UO JO unit of resources; a combination of a first resource unit corresponding to the frequency band slot and a second resource unit that is at a higher frequency of 80 MHz adjacent to the first resource unit and that is not adjacent to the first resource unit; a combination of a first resource unit corresponding to the frequency band slot and a second resource unit and a third resource unit that are at a lower frequency of 80 MHz adjacent to the first resource unit and that are adjacent to the first resource unit; a combination of a first resource unit corresponding to the frequency band slot and a second resource unit and a third resource unit that are at a higher frequency of 80 MHz adjacent to the first resource unit and that are adjacent to the first resource unit; a combination of a first resource unit corresponding to the frequency band slot and two third resource units at a lower frequency of 80 MHz adjacent to the first resource unit; a combination of a first resource unit corresponding to the frequency band slot and two third resource units at a higher frequency of 80 MHz adjacent to the first resource unit; a combination of two first resource units at the lowest frequency and a first resource unit at the highest frequency in a frequency band range of 320 MHz; a combination of a first resource unit at the lowest frequency and two first resource units at the highest frequency in a frequency band range of 320 MHz; a combination of first three resource units at a lower frequency in a frequency band interval of 320 MHz; a combination of first three resource units at a higher frequency in a frequency band interval of 320 MHz; a combination of a second resource unit and a third resource unit that are in the frequency band range and a second resource unit and a third resource unit that are in a lower frequency band range adjacent to the range of frequency bands; and a combination of a second resource unit and a third resource unit that are located in the frequency band interval and a second resource unit and a third resource unit that are located in a frequency band interval ΜΛ / t / ZUZZ / U í UO JO adjacent to the frequency band interval. The sixth resource unit is a resource unit including 52 subcarriers, the fifth resource unit is a resource unit including 26 subcarriers, the fourth resource unit is a resource unit including 106 subcarriers, the third resource unit is a resource unit that includes 242 subcarriers, the second resource unit is a resource unit that includes 484 subcarriers, and the first resource unit is a resource unit that includes 996 subcarriers. In a possible implementation, the resource unit combination indication indicates a combination of the fourth resource unit and the fifth resource unit. The fourth resource unit is a resource unit that includes 106 subcarriers that is indicated by the resource unit indication, and the fifth resource unit is a resource unit that includes 26 subcarriers that is located at a center of an interval of 20 MHz frequency band where the fourth resource unit is located. In a possible implementation, the resource unit combination indication indicates a combination of the sixth resource unit and the fifth resource unit. The sixth resource unit is a resource unit that includes 52 subcarriers that is indicated by the resource unit indication, and the fifth resource unit is a resource unit that includes 26 subcarriers that is located at a center of an interval of 20 MHz frequency band in which the sixth resource unit is located, or a resource unit that includes 26 subcarriers that is on the same side and is adjacent to the sixth resource unit. In a possible implementation, the resource unit combination indication indicates a combination of the second resource unit and the third resource unit. The second resource unit is a resource unit that includes 484 subcarriers which is indicated by the resource unit indication, and the third resource unit is a resource unit, in the frequency band interval, that includes 242 adjacent subcarriers to the second resource unit, or a resource unit, in the frequency band interval, including 242 subcarriers that are not adjacent to the second resource unit. In a possible implementation, the resource unit combination indication indicates a combination of two third resource units, and the two third resource units are two resource units, each of which includes 242 subcarriers, on the outermost side of the frequency band interval. In a possible implementation, the first resource unit is a resource unit that includes 996 subcarriers which is indicated by the resource unit indication. The resource unit combination indication indicates any of the following combinations of a plurality of resource units: a combination of the ΜΛ / t / ZUZZ / U í UO JO first resource unit and the second resource unit, wherein the second resource unit is a resource unit that includes 484 subcarriers that is not adjacent to the first resource unit; a combination of the first resource unit and the third resource unit, wherein the third resource unit is a resource unit that includes 484 subcarriers that is not adjacent to the first resource unit, and a resource unit that includes 242 subcarriers; and a combination of two third resource units, where the two third resource units are two resource units, each of which includes 242 subcarriers, on the outermost side of the frequency band interval. In a possible implementation, the first resource unit is a resource unit that includes 996 subcarriers which is indicated by the resource unit indication. The resource unit combination indication indicates any of the following combinations of a plurality of resource units: a combination of the second resource unit and the first resource unit, wherein the second resource unit is a resource unit that includes 484 subcarriers that are at a lower frequency position 80 MHz adjacent to the first resource unit and that are not adjacent to the first resource unit; a combination of the second resource unit and the first resource unit, wherein the second resource unit is a resource unit that includes 484 subcarriers that is at a higher frequency of 80 MHz adjacent to the first resource unit and that is not adjacent to the first resource unit; a combination of the second resource unit, the third resource unit and the first resource unit, wherein the second resource unit is a resource unit that includes 484 subcarriers that is at a lower frequency of 80 MHz adjacent to the first resource unit, and the third resource unit is a resource unit that includes 242 subcarriers that is at the lowest frequency of 80 MHz adjacent to the first resource unit; a combination of the second resource unit, the third resource unit and the first resource unit, wherein the second resource unit is a resource unit that includes 484 subcarriers that is at a higher frequency of 80 MHz adjacent to the first resource unit, and the third resource unit is a resource unit that includes 242 subcarriers that is at the highest frequency of 80 MHz adjacent to the first resource unit; and a combination of the first resource unit and two resource units that each include 996 subcarriers and are adjacent to the first resource unit. In this application, a combination solution of a plurality of resource units that can be indicated by the resource unit combination indication is not limited to the above possible implementations. A number of bits occupied by the ΜΛ / t / ZUZZ / U í UO JO combination indication of resource units is related to a number of combination solutions that must be indicated. A smaller number of combination solutions that need to be indicated by the resource unit combination indication indicates a lower required bit overhead. In conclusion, a manner wherein the resource unit combination indication indicates a combination of a plurality of resource units can reduce the total overhead of a method for allocating a plurality of resource units. According to a third aspect, this application further provides a communication apparatus. The communication apparatus has some or all of the functions of the station in the method example in the first aspect. For example, functions of the communication apparatus may have functions in some or all modalities of this application, or may have functions to independently implement any modality of this application. Functions can be implemented by hardware, or they can be implemented by hardware that runs the corresponding software. The hardware or software includes one or more units or modules corresponding to the functions. In a possible design, a structure of the communication apparatus may include a processing unit and a communication unit. The processing unit is configured to assist the communication apparatus to perform a corresponding function in the above method. The communication unit is configured to support communication between the communication apparatus and another device. The communication apparatus may further include a storage unit. The storage unit is configured to couple to the processing unit and a sending unit, and the storage unit stores program instructions and data that are necessary for the communication apparatus. In one implementation, the communication apparatus includes: a communication unit, configured to receive a trigger frame from an access point, wherein the trigger frame includes a plurality of user information fields that are equal to an association identifier of the communication apparatus, and each user information indicates one or more resource units assigned to the communication device; or the trigger frame includes a user information field that is the same as an association identifier of the communication apparatus, and the user information field indicates a plurality of resource units assigned to the communication apparatus; and a processing unit, configured to determine the plurality of allocated resource units based on the trigger frame. ΜΛ / í UO JO For example, the processing unit may be a processor, the communication unit may be a transceiver or a communication interface, and the storage unit may be memory. In one implementation, the communication apparatus includes: a transceiver, configured to receive a trigger frame from an access point, wherein the trigger frame includes a plurality of user information fields that are equal to an association identifier of the communication apparatus, and each user information field user indicates one or more resource units assigned to the communication device; or the trigger frame includes a user information field that is the same as an association identifier of the communication apparatus, and the user information field indicates a plurality of resource units assigned to the communication apparatus; and a processor, configured to determine the plurality of allocated resource units based on the trigger frame. According to a fourth aspect, this application further provides a communication apparatus. The communication apparatus has some or all of the functions of the access point in the example of the method in the second aspect. For example, the communication apparatus functions may have access point functions in some or all embodiments of this application, or may have independent implementation functions of any embodiment of this application. Functions can be implemented by hardware, or they can be implemented by hardware that runs the corresponding software. The hardware or software includes one or more units or modules corresponding to the functions. In a possible design, a structure of the communication apparatus may include a processing unit and a communication unit. The communication unit is configured to assist the communication apparatus to perform a corresponding function in the above method. The communication unit is configured to support communication between the communication apparatus and another device, for example, a station. The communication apparatus may further include a storage unit. The storage unit is configured to be coupled to a obtaining unit and a sending unit, and the storage unit stores program instructions and data that are necessary for the communication apparatus. In one implementation, the communication apparatus includes: a processing unit, configured to determine a plurality of resource units assigned to a station; and ΜΛ / í UO JO a communication unit, configured to send a trigger frame to the station, wherein the trigger frame includes a plurality of user information fields that are equal to an association identifier of the station, and each user information field indicates one or more resource units assigned to the station; or the trigger frame includes a user information field that is the same as an association identifier of the station, and the user information field indicates the plurality of resource units assigned to the station. In another implementation, the communication apparatus includes: a processor, configured to determine a plurality of resource units assigned to a station; and a transceiver, configured to send a trigger frame to the station, wherein the trigger frame includes a plurality of user information fields that are equal to an association identifier of the station, and each user information field indicates one or more resource units assigned to the station; or the trigger frame includes a user information field that is the same as an association identifier of the station, and the user information field indicates the plurality of resource units assigned to the station. In a specific implementation process, the processor may be configured to perform, for example, but not limited to, baseband-related processing, and the transceiver may be configured to perform, for example, but not limited to, radio frequency transmission. The above components can be arranged separately on chips that are independent of each other, or at least part or all of the components can be arranged on the same chip. For example, the processor may be further divided into an analog baseband processor and a digital baseband processor. The analog baseband processor and the transceiver may be integrated on a single chip, and the digital baseband processor may be arranged on a separate chip. With the continued development of integrated circuit technologies, more components can be integrated into a single chip. For example, the digital baseband processor and a plurality of application processors (e.g., but not limited to, a graphics processor and a multimedia processor) may be integrated on a single chip. The chip can be called a system on chip. Whether all components are arranged separately on different chips or integrated and arranged on one or more chips usually depends on a specific requirement for a product design. A specific implementation form of the above components is not limited in this embodiment of the present application. According to a fifth aspect, this application further provides a processor, ΜΛ / í UO JO configured to perform the method on the first aspect or the second aspect. In a process embodiment of these methods, a process of sending the above information and a process of receiving the above information in the above methods can be understood as a process of outputting the above information by the processor and a process of receiving of the previous input information by the processor. Specifically, when sending the information, the processor sends the information to a transceiver, so that the transceiver transmits the information. Furthermore, after the processor outputs the information, other processing may need to be performed on the information before the information reaches the transceiver. Similarly, when the processor receives the input information, the transceiver receives the information and inputs it to the processor. Furthermore, after the transceiver receives the information, it may be necessary to perform other processing on the information before the information is entered into the processor. Based on the above principle, for example, the receipt of the joint feedback information mentioned in the above method can be understood as the introduction of the joint feedback information by the processor. For another example, the sending of joint feedback information in the above method can be understood as the output of joint feedback information by the processor. In this case, for operations such as transmission, sending, and receiving related to the processor, if there is no particular statement, or if the operations do not contradict an actual function or internal logic of the operations in related descriptions, the operations can be understood further. generally as operations such as output, reception and input of the processor, rather than operations such as transmit, send and receive performed directly by a radio frequency circuit and an antenna. In a specific implementation process, the processor may be a processor specially configured to perform these methods, or a processor, for example, a general-purpose processor, that executes computing instructions in a memory to perform these methods. The memory may be non-transitory memory such as read only memory (ROM). The memory and processor can be integrated on the same chip, or they can be arranged separately on different chips. A type of memory and a way of arranging the memory and the processor are not limited in the embodiments of the present application. According to a sixth aspect, an embodiment of the present application provides a computer-readable storage medium, configured to store computer software instructions that are used by the previous station and that include a program used to perform the method in the first aspect. According to a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, configured to store computer software instructions that are used by the above access point and that include a program used to perform the method in the second aspect. According to an eighth aspect, this application further provides a computer program product that includes instructions. When the computer program product is executed on a computer, the computer is enabled to perform the method in the first aspect. According to a ninth aspect, this application further provides a computer program product that includes instructions. When the computer program product is executed on a computer, the computer is enabled to perform the method in the second aspect. According to a tenth aspect, this application provides a chip system. The chip system includes a processor and an interface, and is configured to support a station in implementing functions, for example, at least one of determining or processing data and information related in the method, in the first aspect. In one possible design, the chip system further includes a memory, and the memory is configured to store program instructions and data required by the station. The chip system may include a chip or may include a chip and another discrete component. According to an eleventh aspect, this application provides a chip system. The chip system includes a processor and an interface, and is configured to support an access point in implementing functions, for example, at least one of determining or processing data and information related in the method, in the second aspect. In one possible design, the system chip further includes a memory, and the memory is configured to store program instructions and data that are required by the access point. The chip system may include a chip or may include a chip and another discrete component. BRIEF DESCRIPTION OF THE DRAWINGS FIGURE 1 is a schematic diagram of a network structure according to an embodiment of this application. FIGURE 2 is a schematic diagram of a structure of a firing frame according to an embodiment of this application. FIGURE 3 is a schematic flowchart of sending a data packet based on a trigger frame according to an embodiment of this application. FIGURE 4 is a schematic channel distribution diagram according to one embodiment of this application. FIGURE 5 is a schematic diagram of the possible distribution of units of ΜΛ / t / ZUZZ / U í UO JO resources in a bandwidth of 80 MHz according to an embodiment of this application. FIGURE 6 is a schematic diagram of the possible distribution of resource units in a 160 MHz bandwidth according to an embodiment of this application. FIGURE 7 is a schematic diagram of the possible distribution of resource units in a 320 MHz bandwidth according to an embodiment of this application. FIGURE 8 is a schematic flowchart of a resource allocation method according to an embodiment of this application. FIGURE 9 is a schematic diagram of a user information list field according to an embodiment of this application. FIGURE 10 is another schematic diagram of a user information list field according to an embodiment of this application. FIGURE 11 is a schematic diagram of a structure of another user information list field according to an embodiment of this application. FIGURE 12 to FIGURE 17 each is a schematic diagram of a combination of a 52-tone RU and a 26-tone RU in accordance with an embodiment of this application. FIGURE 18 and FIGURE 19 each is a schematic diagram of a combination of a 106-tone RU and a 26-tone RU in accordance with an embodiment of this application. FIGURE 20 to FIGURE 23 each is a schematic diagram of a combination of a 484-tone RU and a 242-tone RU in a frequency band range of 80 MHz according to an embodiment of this application. FIGURE 24 is a schematic diagram of a combination of two 242-tone RUs according to one embodiment of this application. FIGURE 25 and FIGURE 26 each is a schematic diagram of a combination of a 996-tone RU and a 484-tone RU in accordance with an embodiment of this application. FIGURE 27 and FIGURE 28 each is a schematic diagram of a combination of a 996-tone RU, a 484-tone RU, and a 242-tone RU in accordance with an embodiment of this application. FIGURE 29 and FIGURE 30 each is a schematic diagram of a combination of a 996-tone RU, a 242-tone RU, and a 242-tone RU in accordance with an embodiment of this application. FIGURE 31 is a schematic diagram of a combination of a 484-tone RU, a 242-tone RU, a 484-tone RU, and a 242-tone RU according to an embodiment of this application. ΜΛ / í UO JO FIGURE 32 through FIGURE 36 each is a schematic diagram of a combination of three 996-tone RUs in a 320 MHz frequency band interval according to an embodiment of this application. FIGURE 37 through FIGURE 39 each is a schematic diagram of a combination of two 996-tone RUs in accordance with an embodiment of this application. FIGURE 40 is a schematic diagram of a structure of a user information field according to an embodiment of this application. FIGURE 41 is a schematic flowchart of another resource allocation method according to an embodiment of this application. FIGURE 42 is a schematic diagram of a structure of a PPDU preamble message according to an embodiment of this application. FIGURE 43 is a schematic diagram of a structure of a communication apparatus according to an embodiment of this application. FIGURE 44 is a schematic diagram of a structure of another communication apparatus according to an embodiment of this application. FIGURE 45 is a schematic diagram of a chip structure according to an embodiment of this application. DETAILED DESCRIPTION OF THE INVENTION With the development of wireless local area network, the data rate required by a station to transmit uplink data increases accordingly. Therefore, how an access point allocates a plurality of resource units to a station, so that the station can transmit uplink data using the plurality of resource units, to improve a data rate becomes a problem. urgent to resolve. To solve the problem, this application provides a resource allocation method. In the method, an access point may assign a plurality of resource units to a station. The plurality of resource units assigned to the station may also be called a combination of a plurality of resource units or a plurality of combined resource units. Unless otherwise specified, “combination” and “combined” in this specification have the same meaning. First, FIGURE 1 is used as an example to describe a network structure to which the resource allocation method of this application is applicable. FIGURE 1 is a schematic diagram of a network structure according to an embodiment of this application. As shown in FIGURE 1, the network structure may include one access point (AP) and a plurality of non-access point stations (nonAP STA). For ease of description, the station without an access point is called a station ΜΛ / t / ZUZZ / U í UO JO for abbreviation in what follows. FIGURE 1 is described using an example where the network structure includes an access point (AP) and two stations (one STA 1 and one STA 2). The network structure may also include more access points and stations. Alternatively, the network structure may include only two stations. This is not limited in this application. Access point can be an access point used by a terminal device (such as a mobile phone) to access a wired (or wireless) network, and is mainly deployed in the home, in a building, and in a park. A typical coverage radius is tens of meters to one hundred meters. Certainly, the access point can alternatively be implemented outdoors. The access point is equivalent to a bridge that connects the wired network and the wireless network. A main function of the access point is to connect multiple wireless network clients and then connect the wireless network to Ethernet. Specifically, the access point can be a terminal device (such as a mobile phone) or a network device (such as a router) with a wireless fidelity (Wi-Fi) chip. The access point can be a device compatible with the 802.11b standard. Alternatively, the access point may be a device that supports a plurality of Wireless Local Area Network (WLAN) standards of the 802.11 family, such as the 802.11be standard, the 802.11ax standard, the 802.11ac standard , the 802.11 n standard, the 802.11 g standard, the 802.11 b standard, and the 802.11 a standard. The station may be a wireless communication chip, a wireless sensor, a wireless communication terminal or the like, and may also be called a user. For example, the station may be a mobile phone compatible with a Wi-Fi communication function, a tablet compatible with a Wi-Fi communication function, a set-top box compatible with a Wi-Fi communication function, a smart TV compatible with a Wi-Fi communication function communication function, a smart portable device that supports a Wi-Fi communication function, a vehicle-mounted communication device that supports a Wi-Fi communication function, or a computer that supports a communication function Wifi. Optionally, the station can support the 802.11be standard. The station can also support a plurality of Wireless Local Area Network (WLAN) standards of the 802.11 family, such as the 802.11be standard, the 802.11ax standard, the 802.11ac standard, the 802.11 n standard, the 802.11g standard, the 802.11b standard and the 802.11a standard. For example, the access point and the station can be devices applied to the Internet of vehicles, Internet of things nodes or sensors in the Internet of things (IoT), smart cameras, smart remote controls and smart water meters in a smart home and sensors in a smart city. ΜΛ / t / ZUZZ / U / UO JO Then, to facilitate the understanding of the content related to the modalities of this application, some concepts in the modalities of this application are described below. In embodiments of this application, a trigger frame includes a plurality of user information fields that are equal to an association identifier of the station, and each user information field indicates one or more resource units assigned to the station; or the trigger frame includes a user information field that is the same as an association identifier of the station, and the user information field indicates a plurality of resource units assigned to the station. Optionally, a frame format of the trigger frame may be shown in FIGURE 2. FIGURE 2 is a schematic diagram of a structure of a trigger frame according to an embodiment of this application. The trigger frame may include only a portion of the fields shown in FIGURE 2. Alternatively, the trigger frame may include more fields than those shown in FIGURE 2. This is not limited to the embodiments of this application. . For example, the trigger frame includes a common info field and a user info list field. The trigger frame may further include a frame control field (frame control), a duration field (duration), a receiver address field (RA), a transmitter address field (TA), a fill field (padding), a frame check sequence (FCS) field, and the like. The common information field may also be called the common domain or common information domain. The common information field includes common information that must be read by all stations, for example, a trigger type subfield, a length subfield, a cascade indication subfield, a carrier direction required (CS Required) subfield, a bandwidth subfield (bandwidth), a guard interval and long training field (GI+LTF) subfield, and a frame type-dependent common information subfield trigger (trigger dependent common info). The user information list field may also be called a user information list domain, per-station domain, or similar. The user information list field includes one or more user information fields (user info). Each user information field includes information that must be read by each station, for example, an Association Identifier (AID) subfield, a Resource Unit Allocation (RU allocation) subfield, an Encoding Type subfield ( coding type), a modulation subfield, and a coding scheme subfield (Modulation and ΜΛ / / UO JO Coding Scheme, MCS), a reserved subfield, a trigger dependent user info subfield, and the like. The association identifier field indicates an association identifier of a station corresponding to the user information field. The resource unit assignment subfield indicates a resource unit (or resource unit location) that is indicated by the user information field and that is assigned to the station. In embodiments of this application, the user information field may indicate one or more resource units using the resource unit assignment subfield, but this is not limited to the resource unit assignment subfield. In other words, a part or all of a frequency band interval indication, a resource unit indication and a resource unit combination indication that are included in the user information field may be distributed in the user information subfield. resource unit assignment. The “field” described in this specification may also be called “domain,” “information,” or similar, and the “subfield” may be called “subdomain,” “information,” or similar. The field shown in FIGURE 2 is simply an example. The trigger frame may include only a portion of the fields shown in FIGURE 2. Alternatively, the trigger frame may include more fields than those shown in FIGURE 2. Scheduling-based uplink transmission based on a trigger frame means that the station can send a data packet in a plurality of allocated resource units, namely physical layer protocol data units. data unit, PPDU). The data packet may be a high-efficiency trigger-based physical layer protocol data unit (HE TB PPDU) or a HE TB PPDU. extremely high throughput trigger (Extremely High Throughput trigger-basedphysical layer protocol data unit, EHT TB PPDU). The HE TB PPDU is one of the high-efficiency physical layer protocol data units (HE PPDU). FIGURE 3 is a schematic flowchart of uplink transmission based on scheduling based on a trigger frame according to an embodiment of this application. As shown in FIGURE 3, after receiving a trigger frame, a station may determine a plurality of allocated resource units and send a PPDU on the plurality of resource units. A structure of the PPDU is shown in Figure 1. 3. That a STA 1 sends the PPDU is used as an example. HE-LTF to Data includes a plurality of resource units for transmitting uplink data from the STA 1. The functions of the fields in the PPDU ΜΛ / / UO JO are shown in Table 1. Table 1 ΜΛ / / UO JO Description Function Legacy Short Training Field (L-STF) Used for PPDU discovery, fuzzy timing, and automatic gain control Legacy Long Training Field (L-LTF) Used used for fine synchronization and channel estimation Legacy Signal Field A (L-SIG) Used to carry signal information related to a PPDU length, to ensure coexistence High efficiency signal field A ( HighEfficiency Signal Field A, HE-SIGA) Used to carry a signal used to demodulate subsequent data High-Efficiency Short Training Field (HE-STF) Used for automatic gain control of a field later High-Efficiency Long Training Field (HE-LTF) Used for channel estimation Data Used to carry data information A radio channel is divided into a plurality of subchannels or subcarriers in the frequency domain. FIGURE 4 is a schematic channel distribution diagram according to one embodiment of this application. As shown in FIGURE 4, when the bandwidth is 160 MHz, the channel can be divided into a 20 MHz primary channel (also called primary channel, 20 MHz primary, P20), a 20 MHz secondary channel MHz (Secondary 20 MHz, S20), a secondary 40 MHz channel (Secondary 40 MHz, S40) and a secondary 80 MHz channel (Secondary 80 MHz, S80). A channel 1 can correspond to the 20 MHz primary channel, a channel 2 corresponds to the 20 MHz secondary channel, a channel 3 and a channel 4 are combined into the 40 MHz secondary channel, and a channel 5 to a channel 8 are combined on the 80 MHz secondary channel. Different numbers of subcarriers in the channel can be combined into resource units of different sizes. For a bandwidth of 20 MHz, 40 MHz, 80 MHz, 160 MHz or 320 MHz, resource units of different sizes may include the following seven resource units: a first resource unit (which is a resource unit that includes 996 subcarriers and may be referred to as a 996-tone RU), a second resource unit (which is a resource unit that includes 484 subcarriers and may be referred to as a 484-tone RU), a third resource unit (which is a resource unit that includes 242 subcarriers, and may be referred to as a 242-tone RU), a fourth resource unit (which is a resource unit that includes 106 subcarriers, and may be referred to as a 106-tone RU), a fifth resource unit (which is a resource unit unit that includes subcarriers and may be referred to as a 26-tone RU), a sixth resource unit (which is a resource unit that includes 52 subcarriers and may be referred to as a 52-tone RU), and a seventh resource unit (which is a resource unit which includes 2 x 996 subcarriers and may be referred to as a 2 x 996 tone RU). This helps the access point to allocate, based on a data transmission requirement of each station, a plurality of resource units to the station for uplink data transmission. FIGURE 5 is a schematic diagram of the possible distribution of resource units in a bandwidth of 80 MHz according to an embodiment of this application. As shown in FIGURE 5, a first row indicates that the 80 MHz bandwidth can include 37 26-tone RUs, a second row indicates that the 80 MHz bandwidth can include 16 52-tone RUs, a third row indicates that the 80 MHz bandwidth can include eight 106-RU 242-tone RUs, a fourth row indicates that the 80 MHz bandwidth can include four 242-tone RUs, a fifth row indicates that the bandwidth 80 MHz band may include two 484-tone RUs and a sixth row indicates that the 80 MHz bandwidth may include one 996-tone RU. As shown in FIGURE 5, there can be a maximum of nine resource units, that is, nine 26-tone RUs, in a 20 MHz frequency band interval. FIGURE 6 is a schematic diagram of the possible distribution of resource units in a 160 MHz bandwidth according to an embodiment of this application. As shown in FIGURE 6, a first row indicates that the 160 MHz bandwidth can include eight 242-tone RUs, a second row indicates that the 160 MHz bandwidth can include four 484-tone RUs, and a third row indicates that the 160 MHz bandwidth can include two 996-tone RUs. FIGURE 7 is a schematic diagram of the possible distribution of resource units in a 320 MHz bandwidth according to an embodiment of this application. As shown in FIGURE 7, a first row indicates that the 320 MHz bandwidth can include four 996-tone RUs. The resource units shown in each row in FIGURE 5 to FIGURE 7 do not occupy the entire bandwidth and each row may include some remaining subcarriers used for isolation between resource units. As shown in FIGURE 5, each 20 MHz channel has a spacing of two subcarriers and a spacing of one subcarrier, and there is a spacing of 26 subcarriers between a 484-tone RU and a 484-tone RU. The possible distribution of resource units is not limited to that shown in FIGURE 5 to FIGURE 7. For example, the 320 MHz bandwidth may include eight 484-tone RUs or similar. Alternatively, the form of distribution of resource units shown in FIGURE 4 can be used for each 80 MHz frequency band slot in the 320 MHz bandwidth, and for each 80 MHz frequency band slot in the 160 MHz bandwidth. In other words, the possible distribution of resource units in a bandwidth is not limited in the embodiments of this application. To facilitate understanding of the resource allocation method in this application, the distribution shown in FIGURE 5 to FIGURE 7 is used as an example to describe a plurality of resource units assigned to the station, or locations of a plurality of resource units assigned to the station, or which resource units are combined, so that the station can transmit uplink data on the plurality of resource units The resource allocation method and a related device are described below in embodiments of this application with reference to the accompanying drawings. The resource allocation method may also be called a method of indicating a plurality of resource units, a method of combining a plurality of resource units, or the like. In embodiments of this application, a trigger frame is used to assign a plurality of resource units to a station. Below is a description from two aspects. In a first aspect, the trigger frame indicates, using a plurality of user information fields, the plurality of resource units assigned to the station. In other words, the trigger frame includes a plurality of user information (user information) fields that are equal to an association identifier of the station. In a second aspect, the trigger frame indicates, using a user information field, the plurality of resource units assigned to the station. In other words, the trigger frame includes a user information field (user information) which is the same as a station association identifier. 1. The trigger frame includes the plurality of user information (user information) fields that are the same as the association identifier of the station. Each user information field (user information) may indicate one or more resource units, and the one or more resource units indicated by each of the plurality of user information fields are the plurality of resource units assigned to station. Based on the design of the trigger frame, FIGURE 8 is a schematic flowchart of a resource allocation method according to an embodiment of this application. As shown in FIGURE 8, the resource allocation method includes the following stages. 101: An access point determines a plurality of resource units assigned to a station. ΜΛ / t / ZUZZ / U í UO JO 102: The access point sends a trigger frame to the station, wherein the trigger frame includes a plurality of user information fields that are equal to an association identifier of the station, and each user information field indicates one or more resource units assigned to the station. 103: The station receives the trigger frame and determines the plurality of allocated resource units based on the trigger frame. The station determining the plurality of allocated resource units based on the trigger frame includes the following steps. 1031: The station selects, from the trigger frame, one or more user information fields that are the same as the station's association identifier. 1032: For each one or more selected user information fields, the station determines one or more resource units indicated by the user information field, wherein the one or more resource units indicated by each one or more information fields selected user are the plurality of resource units assigned to the station. Optionally, the frame structure shown in FIGURE 2 is used as an example. The user information fields are distributed in a user information list field. Therefore, the station may select, from the user information list field, one or more user information fields that are the same as the association identifier of the station. In other words, the station receives the user information list field, parses the association identifiers indicated by the association identifier fields in the user information fields, and selects a plurality of user information fields that are the same. than the station association identifier. In step 1031, the station may select, in the following optional implementations of the trigger frame, the plurality of user information fields that are equal to the association identifier of the station, but the following implementations are not limited thereto. For example, one or more of the following implementations may be used simultaneously to select the plurality of user information fields. 1.1. All user information fields in the trigger frame are parsed. In the implementation, the station may separately parse an association identifier indicated by an association identifier field in each of all user information fields in the trigger frame; and selecting, from all the user information fields analyzed, a plurality of user information fields that are the same as the association identifier of the station. As shown in FIGURE 2, the user information list field in the trigger frame has a limit, ΜΛ / t / ZUZZ / U í UO JO so that the station can analyze all user information fields based on the limit. For ease of description, in this specification, “a plurality of user information fields that are the same as the association identifier of the station” may be referred to as station user information fields, user information fields that match the station, or similar. The plurality of user information fields corresponding to the station in the trigger frame may appear continuously or discontinuously. For example, it is assumed that the user information list field includes M user information fields, an association identifier of a STA 1 is an AID 1, and user information fields corresponding to the STA 1 in FIGURE 9 appear continuously in the user information list field. In other words, the first two user information fields in the user information list field are user information fields corresponding to STA 1, and a third user information field is a M-th information field. are not user information fields corresponding to STA 1. User information fields corresponding to STA 1 in FIGURE 10 appear dashed in the user information list field. In other words, the user information fields corresponding to the STA 1 may be a first user information field, a third user information field, and the like in the user information list field. It can be seen that for the user information list field shown in FIGURE 9 or FIGURE 10, in the implementation, the station can determine, by analyzing all the user information fields one by one, the plurality of user information fields. user that are equal to the station association identifier. 1.2. A number N of station user information fields in the trigger frame are configured for the station in a predefined manner by protocol or by signaling. In the implementation, the station can select N station user information fields from the user information list field in the trigger frame based on N. Specifically, the station selecting, from the trigger frame, the plurality of user information fields that are equal to the association identifier of the station may include: the station analyzes and determines, based on an index of each user information field user information in the user information list field, if an association identifier indicated by an association identifier field in each user information field is the same as the association identifier of the station, and fails to perform the ΜΛ / t / ZUZZ / U í UO JO step of analyzing whether an association identifier indicated by an association identifier field in each user information field is the same as the association identifier of the station, until a number of user information fields that are equal to the station association identifier is equal to N; and selects, from all the user information fields analyzed, N user information fields that are the same as the association identifier of the station. It can be seen that the implementation ensures the flexibility of implementing the user information fields and reduces the complexity of parsing the user information list field by the station. For example, in the user information list field shown in FIGURE 9, if a number of user information fields of the STA 1 in the user information list field is equal to 2, i.e. , N = 2, when parsing a second user information field and determining two user information fields of the STA 1, the STA 1 may stop parsing the user information list field. For another example, in the user information list field shown in FIGURE 10, if a maximum number of user information fields of STA 1 in the user information list field is equal to 2, it is That is, N = 2, when parsing a third user information field and determining two user information fields of STA 1, STA 1 may stop parsing the user information list field. Optionally, the number N of station user information fields in the user information list field are configured for the station in a manner predefined by protocol or by signaling, or calculated by the access point. For example, a number of resource units that can be indicated by each user information field is assumed to be 1. N can be equal to a number of resource units that can be assigned and configured for the station in a way predefined by the protocol or through the use of signaling. 1.3. The user information fields of the same station in the trigger frame are distributed continuously. In other words, the user information fields of different stations are continuously distributed in the user information list field. As shown in FIGURE 9, after the distribution of the user information fields of the STA 1 into the user information list field is finished, the user information fields of the STA 2 are distributed. In the implementation, in step 103, the station selects, from the user information list field, the plurality of user information fields that are the same as the association identifier of the station may include: the station analyzes and ΜΛ / t / ZUZZ / U / UO JO determines sequentially, based on an index of each user information field and starting from a first analyzed user information field, in the user information list field, which is the same as the station association identifier, either an association identifier indicated by an association identifier field in each user information field is the same as the station association identifier, until it is analyzed and determined a user information field other than station association identifier; and selects, from all the user information fields analyzed, the plurality of user information fields that are equal to the association identifier of the station. It can be seen that the implementation can reduce the complexity of parsing the user information list field by the station. For example, as shown in FIGURE 9, both the user information fields of the STA 1 and the user information fields of the STA 2 are continuously distributed in the user information list field. Once the distribution of the user information fields of the STA 2 begins, it indicates that the distribution of the user information fields of the STA 1 ends. In this way, after analyzing and determining the second information field of the user, the STA 1 continues analyzing the third user information field. After determining that the third user information field is not a user information field of the STA 1, the STA 1 may stop parsing a subsequent user information field, that is, stop parsing the list field. user information. 1.4. The user information field includes an ending flag. To be specific, FIGURE 11 is a schematic diagram of a structure of another user information list field according to an embodiment of this application. In FIGURE 11, the user information field further includes a completion indicator, and the completion indicator indicates whether the assignment of the resource unit to the station is completed. The final flag can occupy one bit. Bit one can be a bit in a reserved field in the user information field, a bit newly added to the user information field, or a bit that is from other information and is reused. This is not limited to the modalities of this application. The final flag may also be referred to as the final flag domain, final flag information, final flag indication, or similar. An end flag value of 1 may indicate that the assignment of the resource unit to the station with the user information field where the end flag is located ends. A final flag value of 0 may indicate that the assignment of the resource unit to the station with the user information field where the final flag is located is not complete, and the station needs ΜΛ / t / ZUZZ / U í UO JO analyze a following user information field, or vice versa. In the implementation, the station selects, from the user information list field, the plurality of user information fields that are the same as the association identifier of the station may include: the station analyzes sequentially, based on an index of each user information field in the trigger frame, if an association identifier indicated by an association identifier field in each user information field is the same as the association identifier of the station, and stops the step of analyzing whether an association identifier indicated by an association identifier field in each user information field is the same as the association identifier of the station, until a completion indicator in a field of user information analyzed indicates that the allocation of the resource unit to the station is completed; and selects, from all the user information fields analyzed, the plurality of user information fields that are equal to the association identifier of the station. The value of the final flag is assumed to be 1 indicating the assignment of the resource unit to the station with the user information field where the final flag is located. As shown in FIGURE 9, if the second user information field is a last user information field in the user information fields to assign the resource unit to the STA 1, the AP can set the flag value end to 1 in the second user information field. In this way, by parsing the second user information field and reading that the end flag value is 1, the station can stop parsing the user information list field. In other words, the station does not need to analyze the third user information field and a user information field after the third user information field. Consequently, because the first user information field is not the last user information field in the user information fields for assigning the resource unit to STA 1, the value of the final flag can be set to 0 in the first user information field. In this way, after analyzing and determining the first user information field, the STA 1 can continue to analyze and determine the second user information field. As shown in FIGURE 10, if the third user information field is a last user information field in the user information fields to assign the resource unit to the STA 1, the AP can set the flag value ending at 1 in the third user information field. In this way, by parsing the third user information field and reading that the final indicator value is 1, the station can stop parsing and determining the field from the user information list. In other words, the ΜΛ / t / ZUZZ / U í UO JO station does not need to analyze the fourth user information field and a user information field after the fourth user information field. Consequently, because the first user information field is not the last user information field in the user information fields for assigning the resource unit to STA 1, the value of the final flag can be set to 0 in the first user information field. In this way, after analyzing and determining the first user information field, the STA 1 can continue to analyze and determine the second user information field. Furthermore, in FIGURE 10, after analyzing the second user information field and determining that the second user information field is not a user information field of the STA 1, the STA 1 can continue to analyze and determine the third user information field. Additionally, a method wherein the station selects the plurality of station user information fields from the user information list field may include any or more of the above implementations described in 1.1 to 1.4, but is not limited to the implementations . A manner wherein the station determines one or more resource units indicated by each of the plurality of selected user information fields may be described using the following optional implementations in embodiments of this application, but the following implementations are not limited thereto: . 2.1. Each user information field indicates a resource unit. The user information field can indicate a resource unit. For example, the resource unit assignment subfield shown in FIGURE 2 indicates the resource unit. In other words, a resource unit indication and a frequency band interval indication that are included in a user information field may be included in the resource unit assignment subfield. It can be seen that in the implementation, regardless of a bandwidth interval of a combination of resource units and a number of required RUs, a number of user information fields can respectively indicate an equal number of RUs. In the implementation, the station may be notified, in the form of a predefined protocol or in the form of a signaling configuration, of a correspondence between resource units and indexes. The AP may indicate one of the indexes using the resource unit assignment subfield, so that the station can determine a corresponding resource unit based on the index indicated by the resource unit assignment subfield. A wireless local area network bandwidth may include 20 MHz, 40 MHz, ΜΛ / í UO JO MHz, 160 MHz, 240 MHz, 320 MHz and similar. For a bandwidth of 20 MHz, 40 MHz, or 80 MHz, when assigning a resource unit to the station, the AP can directly indicate a resource unit in the bandwidth through the resource unit allocation subfield. For a bandwidth greater than or equal to 160 MHz, for example, 160 MHz, 240 MHz, or 320 MHz, the AP additionally needs to use the resource unit allocation subfield to indicate a bandwidth of 80 MHz, where find the resource unit. Therefore, the resource unit allocation subfield may include a frequency band interval indication and a resource unit indication. The frequency band interval indication indicates a frequency band interval where a resource unit indicated by the resource unit indication is located, and the resource unit indication indicates an assigned resource unit. Optionally, if the size of the resource unit indicated by the resource unit indication is greater than 80 MHz, or the number of subcarriers included in the resource unit indicated by the resource unit indication is greater than 996, for example, 2 x 996 RU tones, the frequency band interval indication can be ignored, that is, the station does not need to analyze the frequency band interval indication. Table 2 shows a relationship between a frequency band interval indication value, a bandwidth and a frequency band interval provided in embodiments of this application. As shown in Table 2, for 20 MHz, 40 MHz, and 80 MHz bandwidths, the resource unit allocation subfield may not include the frequency band slot indication. For a bandwidth of 160 MHz, the frequency band interval indication in the resource unit assignment subfield can occupy one bit, that is, the number of bits required is 1. That the frequency band interval indication frequency equals 0 indicates that a resource unit indicated by the resource unit indication is located in the primary 80 MHz in the bandwidth, or a resource unit indicated by the resource unit indication is a unit of resources in the primary 80 MHz. That the frequency band interval indication is equal to 1 indicates that a resource unit indicated by the resource unit indication is located on a secondary 80 MHz in the bandwidth, or that a resource unit indicated by the resource unit indication resource unit is a resource unit on 80 MHz secondary. For a bandwidth of 320 MHz, the frequency band interval indication in the resource unit assignment subfield can occupy two bits, that is, a number of required bits is 2. That the frequency band interval indication frequency equals 0 indicates that a resource unit indicated by the resource unit indication is located in the primary 80 MHz in the bandwidth, or a resource unit indicated by the resource unit indication is a unit of resources in the primary 80 MHz. That ΜΛ / t / ZUZZ / U í UO JO frequency band interval indication equal to 1 indicates that a resource unit indicated by the resource unit indication is located in a secondary 80 MHz in the bandwidth, or that a resource unit indicated by the resource unit indication is a resource unit in 80 MHz secondary. That the frequency band interval indication is equal to 2 indicates that a resource unit indicated by the resource unit indication is located in one third of 80 MHz in the bandwidth, or a resource unit indicated by the indication of resource unit is a resource unit in one third of 80 MHz. That the frequency band interval indication is equal to 3 indicates that a resource unit indicated by the resource unit indication is located in the quarter 80 MHz in the bandwidth, or that a resource unit indicated by the resource unit indication is a resource unit in the 80 MHz room. Additionally, in Table 2, a correspondence between each value of the resource indication can be set. frequency band interval and each 80 MHz frequency band interval. This is not limited to the embodiments of this application. ΜΛ / í UO JO Table 2 Bandwidth (BW) Frequency band interval indication Number of bits 20 MHz, 40 MHz, and 80 MHz 0 0 160 MHz 0: primary (primary) 80 MHz (also known as first 80 MHz or first 80 MHz low frequency) 1 0: secondary (secondary) 80 MHz (which is also known as second 80 MHz or high frequency 80 MHz) 320 MHz 0: primary (primary) 80 MHz (which is also known as first 80 MHz or 80 MHz lower frequency) 2 1: secondary (secondary) 80 MHz (which is also known as second 80 MHz, second 80 MHz lower frequency or second 80 MHz lower frequency) 2: third 80 MHz (which is also known as second 80 MHz highest frequency) 3: fourth 80 MHz (which is also known as 80 MHz highest frequency) The resource unit indication indicates a resource unit. A resource unit size may include, but is not limited to, the seven sizes above. Referring to the schematic diagram of distribution of resource units in a bandwidth of 80 MHz shown in FIGURE 5, the 80 MHz frequency band interval may include 37 26-tone RUs located in different locations, 16 RUs 52-tone RUs located in different locations, eight 106-tone RUs located in different locations, four 242-tone RUs located in different locations, two 484-tone RUs located in different locations, or one 996-tone RU. Additionally, the resource unit indication may alternatively indicate 2 RUs of 996 tones. Therefore, the value of the resource unit indication or the index indicated by the resource unit indication ranges between at least 0 and 68, to respectively indicate the 68 resource units. Table 3 shows a correspondence between a value of the resource unit indication and each resource unit. To indicate all 68 resource units, the resource unit indication needs at least seven bits. Therefore, the values ​​0 to 68 of the seven bits can respectively indicate the resource units shown in Table 3, and the values ​​69 to 127 can be reserved. Additionally, the correspondence between each value and a resource unit indicated in Table 3 can be adjusted. This is not limited to the modalities of this application. For example, the values ​​of the resource unit indication may indicate, in descending order, resource units that are arranged in descending order, or the like. The related content described in Table 3 may include related literal descriptions of claim 13 in the claims. In other words, the specification describes cases where the first resource unit through the seventh resource unit are replaced with resource units of corresponding sizes. For example, the first resource unit is a 996-tone RU, the second resource unit is a 484-tone RU, and the third resource unit is a 242-tone RU. Similarly, the descriptions in Table 2 to Table 13 are also provided using the corresponding RUs and include the content of the corresponding claims. Table 3 Resource unit indication Indicated resource unit (description) Quantity (number of entries) 0 to 36 Indicates respectively 37 26-tone RU in 80 MHz (possible cases of 26-tone RU in 80 MHz) 37 37 to 52 Indicates respectively 16 52-tone RU on 80 MHz (possible cases of 52-tone RU on 80 MHz) 16 53 to 60 Indicates respectively eight 106-tone RUs on 80 MHz (possible cases of 106-tone RU on 80 MHz) 8 61 to 64 Indicates respectively four RUs of 242 tones in 80 MHz (possible cases of RUs of 242 tones in 80 MHz) 4 65 and 66 Indicates respectively two RUs of 484 tones in 80 MHz 2 Resource unit indication Indicated resource unit (description) Quantity (number of entries) (possible cases of 484-tone RU in 80 MHz) 67 Indicates a 996-tone RU in 80 MHz (996-tone RU box in 80 MHz) 1 68 Indicates 2 996-tone RUs (2 996-tone RU boxes) 1 69 Indicates 3 996-tone RUs (3 996-tone RU boxes) 1 70 Indicates 4 996-tone RUs (4 996-tone RU boxes) 1 71 a 127 Reserved {Reserved) 57 ΜΛ / í UO JO In the implementation, the frequency band interval indication indicates a frequency band interval of 80 MHz in a bandwidth, and the resource unit indication indicates a resource unit. The resource unit can be any resource unit in the 80 MHz frequency band interval or any resource unit in a frequency band interval greater than 80 MHz. In other words, each user information field can indicate any resource unit in a frequency band interval of 80 MHz or a resource unit in a frequency band interval greater than 80 MHz. Therefore, for the plurality of user information fields selected in step 103 in this In this request, a resource unit assignment subfield can be used in each user information field to determine a resource unit. In this case, the resource units separately indicated by the plurality of user information fields are the plurality of resource units assigned to the station. If a bandwidth is 20 MHz, 40 MHz, or 80 MHz, in this implementation, the frequency band gap indication may be 0 by default. For each user information field of the station, the station can determine a resource unit based on the resource unit indication. If a bandwidth is 160 MHz or 320 MHz, the frequency band interval indication may occupy one or two bits. For each user information field of the station, the station may determine an 80 MHz frequency band slot based on the frequency band slot indication and determine a corresponding resource unit of the 80 MHz frequency band slot. MHz based on resource unit indication. It is assumed that, regardless of the bandwidth size, the frequency band interval indication occupies two bits that are two bits higher in the resource unit allocation subfield, the resource unit indication occupies seven bits that are seven lowest bits in the resource unit assignment subfield, and the values ​​of the resource unit indication, in ascending order, in Table 3 are in a one-to-one correspondence with the RUs in each row from left to right in FIGURE 3. To facilitate the description by using an example, some possible RU combination solutions are described below with reference to the accompanying drawings. FIGURE 12 to FIGURE 17 are used as an example to describe a combined solution of a 52-tone RU and a 26-tone RU in a frequency band range of 20 MHz at 80 MHz, that is, a 52-tone RU and a RU of 26 tones that are assigned to a station. The solution is to combine a 52-tone RU at a second lower frequency in a 20 MHz frequency band slot in the 80 MHz frequency band slot with a 26-tone RU in the 20 MHz frequency band slot. MHz, which is on the same side as and which is next to the 52-tone RU. “The 26-tone RU that is on the same side and is adjacent to the 52-tone RU” is related to a location of the 20 MHz frequency band slot in the 80 MHz frequency band slot. 20 MHz frequency band slot is to the left of a central location of the 80 MHz frequency band slot, “the 26-tone RU that is on the same side and adjacent to the 52-tone RU” means that “the 26-tone resource unit is on the left side of the 20 MHz frequency band slot and adjacent to the 52-tone RU”; or if the 20 MHz frequency band slot is to the right of a central location of the 80 MHz frequency band slot, “the 26-tone RU that is on the same side and adjacent to the 52-tone RU” means that “the 26-tone resource unit is on the right side of the 20 MHz frequency band slot and adjacent to the 52-tone RU.” In this specification, an RU at the second lowest frequency, an RU at the lowest frequency, an RU at the second highest frequency, and an RU at the highest frequency are all relative concepts in a frequency range. For example, as shown in FIGURE 5, in the first 20 MHz, a 52-tone RU at a second lower frequency is a second 52-tone RU in a second row in FIGURE 5, a 52-tone RU at a second lower frequency. the lowest frequency is a 52-tone first RU in the second row of FIGURE 5, a 52-tone RU at a second higher frequency is a 52-tone third RU in the second row of FIGURE 5, and a RU of 52 tones at the highest frequency is a fourth RU of 52 tones in the second row of FIGURE 5. Consequently, for another RU, one RU at the second lowest frequency, one RU at the lowest frequency, one RU at the second highest frequency and a RU at the highest frequency are similar, and the details are not described again here. Furthermore, in this specification, a low-frequency RU and a high-frequency RU are also relative concepts in a frequency range. Typically, there are two RUs in the frequency range. The low frequency RU is an RU that ΜΛ / t / ZUZZ / U í UO JO is at a lower frequency in the two RUs, and the high-frequency RU is an RU that is at a higher frequency in the two RUs. For example, as shown in FIGURE 5, in the first 20 MHz, a 106-tone RU at low frequency is a first 106-tone RU in a third row in FIGURE 5, and a 106-tone RU at high frequency is a second 106-tone RU in the third row of FIGURE 5. FIGURE 12 is a schematic diagram of a combination solution of a 52-tone RU and a 26-tone RU according to an embodiment of this application. FIGURE 12 shows the RU distribution in a case where 20 MHz is the first 20 MHz or the second 20 MHz in 80 MHz. Therefore, at the 20 MHz shown in FIGURE 12, a combined solution of one RU of 52 tones at a second lower frequency and a 26-tone RU, at 20 MHz, which is on the same side and which is adjacent to the 52-tone RU is shown in FIGURE 12. FIGURE 13 is a schematic diagram of another combination solution of a 52-tone RU and a 26-tone RU according to an embodiment of this application. FIGURE 13 shows the RU distribution in a case where 20 MHz is the third 20 MHz or the fourth 20 MHz in 80 MHz. In other words, the 20 MHz is on the right side of a central location of the RU bandwidth. frequency of 80 MHz. Therefore, at the 20 MHz shown in FIGURE 13, a combined solution of a 52-tone RU at the lowest frequency and a 26-tone RU, in the 20 MHz frequency band range , which is on the same side and adjacent to the 52-tone RU is a combination of the 52-tone RU at a lower frequency and the 26-tone RU which is on the right side of the 20 MHz frequency band interval and which is adjacent to the 52-tone RU. FIGURE 14 is a schematic diagram of another combination solution of a 52-tone RU and a 26-tone RU according to an embodiment of this application. FIGURE 14 shows the RU distribution in a case where 20 MHz is the third 20 MHz or the fourth 20 MHz in 80 MHz. In other words, the 20 MHz is on the right side of a central location of the RU bandwidth. frequency of 80 MHz. Therefore, at the 20 MHz shown in FIGURE 14, a combined solution of a 52-tone RU at the second highest frequency and a 26-tone RU, in the 20-tone frequency band range MHz, which is on the same side and adjacent to the 52-tone RU is a combination of the 52-tone RU at a second higher frequency and the 26-tone RU which is on the right side and adjacent to the 52-tone RU. tones. FIGURE 15 is a schematic diagram of another combination solution of a 52-tone RU and a 26-tone RU according to an embodiment of this application. FIGURE 15 shows the RU distribution in a case where 20 MHz is the first 20 MHz or the second 20 MHz in 80 MHz. In other words, the 20 MHz is on the ΜΛ / í UO JO from a central location of the 80 MHz frequency band range. Therefore, at the 20 MHz shown in FIGURE 15, a combined solution of a 52-tone RU at the highest frequency and a 26-tone RU, in the 20 MHz frequency band interval, which is on the same side and adjacent to the 52-tone RU is a combination of the 52-tone RU at a higher frequency and the 26-tone RU which is on the left side of the 20 MHz frequency band interval and which is adjacent to the 52-tone RU. FIGURE 16 is a schematic diagram of another combination solution of a 52-tone RU and a 26-tone RU according to an embodiment of this application. FIGURE 16 shows the RU distribution in a case where 20 MHz is a 20 MHz frequency band interval in 80 MHz. As shown in FIGURE 16, a combined solution of a 52-tone RU at the second frequency lowest in the 20 MHz frequency band range and a 26-tone RU in a center of the 20 MHz frequency band range is a combination of the 52-tone RU in a second lower frequency and the 26-tone RU tones in the center of the 20 MHz frequency band range. FIGURE 17 is a schematic diagram of another combination solution of a 52-tone RU and a 26-tone RU according to an embodiment of this application. FIGURE 17 shows the RU distribution in a case where 20 MHz is a 20 MHz frequency band interval in 80 MHz. As shown in FIGURE 17, a combined solution of a 52-tone RU at the second frequency highest in the 20 MHz frequency band range and a 26-tone RU in a center of the 20 MHz frequency band range is a combination of the 52-tone RU in a second highest frequency and the 26-tone RU tones in the center of the 20 MHz frequency band range. FIGURE 18 and FIGURE 19 are used as an example to describe a combined solution of a 106-tone RU and a 26-tone RU in a frequency band range of 20 MHz at 80 MHz, that is, a 106-tone RU and a RU of 26 tones that are assigned to the station. FIGURE 18 is a schematic diagram of a combination of a 106-tone RU and a 26-tone RU according to one embodiment of this application. FIGURE 18 shows the distribution of RUs in a 20 MHz frequency band range at 80 MHz. FIGURE 18 shows a combined solution of a 106 tone low frequency RU in the 20 MHz frequency band range and a 26-tone RU in a center of the 20 MHz frequency band range. FIGURE 19 is a schematic diagram of a combination of a 106-tone RU and a 26-tone RU according to an embodiment of this application. FIGURE 19 shows the distribution of RUs in a 20 MHz frequency band range at 80 MHz. FIGURE 19 shows a combined solution of a 106 tone high frequency RU in the 20 MHz frequency band range and a 26-tone RU in a center of the 20 MHz frequency band range. FIGURE 20 to FIGURE 23 are used as an example to describe a combined solution of a 484-tone RU and a 242-tone RU at 80 MHz, that is, a 484-tone RU and a 242-tone RU that are assigned to station. FIGURE 20 is a schematic diagram of a combination of a 484-tone RU and a 242-tone RU according to one embodiment of this application. FIGURE 20 shows the RU distribution at 80 MHz. FIGURE 20 shows a combined solution of a 484 tone low frequency RU and a continuous 242 tone RU. FIGURE 21 is a schematic diagram of a combination of a 484-tone RU and a 242-tone RU according to an embodiment of this application. FIGURE 21 shows the RU distribution at 80 MHz. FIGURE 21 shows a combined solution of a 484-tone high frequency RU and a continuous 242-tone RU. FIGURE 22 is a schematic diagram of a combination of a 484-tone RU and a 242-tone RU according to one embodiment of this application. FIGURE 22 shows the RU distribution at 80 MHz. FIGURE 22 shows a combined solution of a 484-tone low frequency RU and a discontinuous 242-tone RU. FIGURE 23 is a schematic diagram of a combination of a 484-tone RU and a 242-tone RU according to one embodiment of this application. FIGURE 23 shows the RU distribution at 80 MHz. FIGURE 23 shows a combined solution of a 484-tone high frequency RU and a discontinuous 242-tone RU. FIGURE 24 is a schematic diagram of a combination of two 242-tone RUs according to one embodiment of this application. FIGURE 24 shows the RU distribution at 80 MHz. FIGURE 24 shows a combined solution of two 242-tone RUs on the outermost side of 80 MHz. “Outermost side” is relative to 80 MHz. So Optionally, the combination of two 242-tone RUs in FIGURE 24 may also be called a 242-tone RU on “two sides” of the 80 MHz. FIGURE 25 and FIGURE 26 each is a schematic diagram of a combination of a 996-tone RU and a 484-tone RU, but are not limited to combination solutions. FIGURE 25 is a schematic diagram of a combination of a 996-tone RU and a 484-tone RU according to an embodiment of this application. FIGURE 25 shows the RU distribution at 80 MHz that is indicated by the frequency band gap indication and is at a higher frequency of 80 MHz adjacent to 80 MHz. A combined solution of a corresponding 996-tone RU at 80 MHz indicated by the frequency band gap indication and a 484-tone RU that is in a ΜΛ / t / ZUZZ / U í UO JO highest frequency of 80 MHz adjacent to the 996-tone RU and not adjacent to the 996-tone RU is shown in FIGURE 25. FIGURE 26 is a schematic diagram of a combination of a 996-tone RU and a 484-tone RU according to one embodiment of this application. FIGURE 26 shows the RU distribution at 80 MHz that is indicated by the frequency band gap indication and is at a lower frequency of 80 MHz adjacent to 80 MHz. A combined solution of a corresponding 996-tone RU at 80 MHz indicated by the frequency band gap indication and a 484-tone RU that is at a lower frequency of 80 MHz adjacent to the 996-tone RU and that is not adjacent to the 996-tone RU is shown in FIGURE 26. FIGURE 27 and FIGURE 28 each is a schematic diagram of a combination of a 996-tone RU, a 484-tone RU, and a 242-tone RU, but are not limited to combination solutions. FIGURE 27 is a schematic diagram of a combination of a 996-tone RU, a 484-tone RU, and a 242-tone RU according to an embodiment of this application. FIGURE 27 shows the RU distribution at 80 MHz that is indicated by the frequency band gap indication and is at a higher frequency of 80 MHz adjacent to 80 MHz. A combined solution of a corresponding 996-tone RU at 80 MHz indicated by the frequency band interval indication and a 484-tone RU and a 242-tone RU that are at a higher frequency of 80 MHz adjacent to the 996-tone RU and that are not adjacent to the RU of 996 tones shown in FIGURE 27. FIGURE 28 is a schematic diagram of a combination of a 996-tone RU, a 484-tone RU, and a 242-tone RU in accordance with an embodiment of this application. FIGURE 28 shows the RU distribution at 80 MHz that is indicated by the frequency band gap indication and is at a lower frequency of 80 MHz adjacent to 80 MHz. A combined solution of a corresponding 996-tone RU at 80 MHz indicated by the frequency band interval indication and a 484-tone RU and a 242-tone RU that are at a lower frequency of 80 MHz adjacent to the 996-tone RU and that are not adjacent to the RU of 996 tones shown in FIGURE 28. Furthermore, in this specification, a frequency band interval being “lower frequency adjacent” or “higher frequency adjacent” to another frequency band interval means that the two frequency band intervals are the closest. For example, in FIGURE 27, in relation to a second frequency band interval of 80 MHz, a first frequency band interval of 80 MHz may be called a lower frequency frequency band interval adjacent to the second frequency band interval 80 MHz. Relative to the first 80 MHz frequency band interval, the second 80 MHz frequency band interval may be called a higher frequency frequency band interval adjacent to the first 80 MHz frequency band interval. FIGURE 29 and FIGURE 30 each is a schematic diagram of a combination of a 996-tone RU, a 242-tone RU, and a 242-tone RU, but are not limited to combination solutions. FIGURE 29 is a schematic diagram of a combination of a 996-tone RU, a 242-tone RU, and a 242-tone RU according to an embodiment of this application. FIGURE 29 shows the RU distribution at 80 MHz that is indicated by the frequency band gap indication and is at a higher frequency of 80 MHz adjacent to 80 MHz. A combined solution of a corresponding 996-tone RU at 80 MHz indicated by the frequency band gap indication and RU of 242 tones that are at a higher frequency of 80 MHz adjacent to the RU of 996 tones and that are on two sides of the 80 MHz shown in FIGURE 29. FIGURE 30 is a schematic diagram of a combination of a 996-tone RU, a 242-tone RU, and a 242-tone RU according to an embodiment of this application. FIGURE 29 shows the RU distribution at 80 MHz that is indicated by the frequency band gap indication and is at a lower frequency of 80 MHz adjacent to 80 MHz. A combined solution of a corresponding 996-tone RU at 80 MHz indicated by the frequency band gap indication and RU of 242 tones that are at a lower frequency of 80 MHz adjacent to the RU of 996 tones and that are on two sides of the 80 MHz shown in FIGURE 30. FIGURE 31 is a schematic diagram of a combination of a 484-tone RU, a 242-tone RU, a 484-tone RU, and a 242-tone RU according to an embodiment of this application. FIGURE 31 shows the RU distribution at 80 MHz that is indicated by the frequency band gap indication and is at a higher frequency of 80 MHz adjacent to 80 MHz. A combined solution of a 484-tone RU and a 242-tone RU on 80 MHz indicated by the frequency band gap indication and a 484-tone RU and a 242-tone RU that are at a higher frequency of 80 MHz adjacent to the 484-tone RU and the RU of 242 tones is shown in FIGURE 31. There are four solutions for selecting a 484-tone RU and a 242-tone RU on 80 MHz. As shown in FIGURE 20 to FIGURE 23, there are two 80 MHz frequency band intervals between 80 MHz indicated by the indication of frequency band interval and 80 MHz adjacent to 80 MHz. Therefore, 4 x 4 = 16, that is, there may be ΜΛ / í UO JO combination solutions for the 484-tone RU, the 242-tone RU, the 484-tone RU and the 242-tone RU. The details are not described here. FIGURE 32 through FIGURE 36 each is a schematic diagram of a combination of three 996-tone RUs in a 320 MHz frequency band range. FIGURE 32 is a schematic diagram of a 996-tone three-RU combination according to one embodiment of this application. The RU distribution shown in FIGURE 32 is RU distribution at 320 MHz. At 320 MHz, a combination of two 996-tone RUs at the lowest frequency and one 996-tone RU at the highest frequency is shown in FIGURE 32. FIGURE 33 is a schematic diagram of a combination of three 996 tone RUs according to one embodiment of this application. The RU distribution shown in FIGURE 33 is RU distribution at 320 MHz. At 320 MHz, a combination of one 996-tone RU at the lowest frequency and two 996-tone RUs at the highest frequency is shown in FIGURE 33. FIGURE 34 is a schematic diagram of a combination of three 996-tone RUs according to one embodiment of this application. The RU distribution shown in FIGURE 34 is RU distribution at 320 MHz. At 320 MHz, a combination of three RUs of 996 tones at a lower frequency is shown in FIGURE 34. FIGURE 35 is a schematic diagram of a combination of three 996-tone RUs according to one embodiment of this application. The RU distribution shown in FIGURE 35 is RU distribution at 320 MHz. At 320 MHz, a three-RU combination of 996 tones at the highest frequency is shown in FIGURE 35. FIGURE 36 is a schematic diagram of a combination of four 996-tone RUs according to one embodiment of this application. The RU layout shown in FIGURE 36 is RU layout at 320 MHz. At 320 MHz, a combination of four 996-tone RUs is shown in FIGURE 36. FIGURE 37 through FIGURE 39 each is a schematic diagram of a combination of two 996-tone RUs in accordance with an embodiment of this application. The two 996-tone RUs include at least one 996-tone RU corresponding to the primary 80 MHz. FIGURE 37 is a schematic diagram of a combination of two 996-tone RUs according to one embodiment of this application. The RU distribution shown in FIGURE 37 is RU distribution at 320 MHz. At 320 MHz, a combination of a 996-tone RU corresponding to 80 MHz (e.g., the first 80 MHz) indicated by the band gap indication frequency and another RU of 996 tones corresponding to the first 80 MHz is shown in FIGURE 37. ΜΛ / t / ZUZZ / U í UO JO FIGURE 38 is a schematic diagram of another combination of two 996-tone RUs according to one embodiment of this application. The RU distribution shown in FIGURE 38 is RU distribution at 320 MHz. At 320 MHz, a combination of a 996-tone RU corresponding to 80 MHz (e.g., the first 80 MHz) indicated by the band gap indication frequency and another RU of 996 tones corresponding to the second 80 MHz is shown in FIGURE 38. FIGURE 39 is a schematic diagram of another combination of two 996-tone RUs according to an embodiment of this application. The RU distribution shown in FIGURE 39 is RU distribution at 320 MHz. At 320 MHz, a combination of a 996-tone RU corresponding to 80 MHz (e.g., the first 80 MHz) indicated by the band gap indication frequency and another RU of 996 tones corresponding to the third 80 MHz is shown in FIGURE 39. FIGURE 12 through FIGURE 39 are schematic diagrams of some possible RU combination solutions. In the resource allocation method of this application, the RU combination solutions shown in FIGURE 12 to FIGURE 39 are used as an example to describe how to provide indications for the station, to implement the allocation of a plurality of units of resources to the station. Optionally, the RU combination solutions in FIGURE 12 to FIGURE 39 are applicable to the configuration of resource units in uplink transmission, or configuration of resource units in PPDU transmission, for example, configuration of resource units in a single-user protocol data unit (Single-User PPDU, SU PPDU), a multi-user protocol data unit (Multi-User PPDU, MU PPDU), or an extended interval protocol data unit (Extended-Range PPDU, ER PPDU). In the implementation, the user information list field includes the plurality of user information fields that are the same as the association identifier of the station, each user information field indicates a resource unit, the interval indication The frequency band indication in the resource unit assignment subfield may indicate 80 MHz in the bandwidth, and the resource unit indication may indicate one of the resource units using the correspondence shown in Table 3. For example, in the user information list field shown in FIGURE 9, the AP sets the resource unit allocation subfield in the first user information field to 000000001. In this case, the STA 1 can analyze the first user information field and determine that the frequency band interval indication (upper bits 00) in the resource unit assignment subfield indicates the first 80 MHz, and the resource unit indication (lower bits 0000001) indicates the ΜΛ / t / ZUZZ / U í UO JO second 26-tone RU in the first row of FIGURE 3. Additionally, the AP sets the resource unit assignment subfield in the second user information field to 000100110. In this In this case, the STA 1 may analyze the second user information field and determine that the frequency band interval indication (upper bits 00) in the resource unit assignment subfield indicates the first 80 MHz, and the unit indication resource (lower bits 0100110) indicates the second 52-tone RU in the second row of FIGURE 5. Because STA 1 can determine, based on the implementations described in 1.1 to 1.4, that the resource list field user information does not include the user information fields of the STA 1, the STA 1 may finally determine that the plurality of RUs assigned to the STA 1 are the second 26-tone RU in the first row of FIGURE 5 and the second 52-tone RU in the second row of FIGURE 5. Similarly, the two resource unit combination solutions shown in FIGURE 12 to FIGURE 26 and the two resource unit combination solutions shown in FIGURE 37 to FIGURE 39 may alternatively provide indications based on the correspondences shown in Table 2 and Table 3, so that the station can obtain a plurality of allocated resource units. The details are not described here again. For the three resource unit combination solutions shown in FIGURE 27 to FIGURE 34, the user information list field may include three user information fields that are the same as the station association identifier , so that the value of the frequency band interval indication and the value of the resource unit assignment indication in each resource unit assignment subfield can be determined separately using the three user information fields and the correspondences shown in Table 2 and Table 3. Accordingly, the station can obtain the three station user information fields from the user information list field using the implementations shown in 1.1 to 1.4, and then determine three allocated resource units based on Table 2, Table 3, and the values ​​in the user information fields in the implementations. In the implementation, user information fields are used to assign a plurality of RUs to a single station, and the station can correctly parse the RU assignment information. This helps achieve backward compatibility with a conventional receiving STA. 2.2. A user information field indicates a plurality of resource units. In one case, a manner is used where one user information field is needed to indicate every 80 MHz. In this case, a maximum of two user information fields are needed to indicate a combination of RUs in a band slot. of ΜΛ / t / ZUZZ / U / UO JO frequency greater than 80 MHz and less than or equal to 160 MHz. A maximum of four user information fields are required to indicate a combination of RUs in a frequency band interval greater than 160 MHz and less than or equal to 320 MHz. In the implementation, a combination of a plurality of RUs in the 80 MHz may be indicated using a user information field. In another case, a manner is used where one user information field is needed to indicate each 160 MHz. In this case, a maximum of one user information field is needed to indicate a combination of RUs in a band slot. of frequency less than or equal to 160 MHz. A maximum of two user information fields are required to indicate a combination of RUs in a frequency band range greater than 160 MHz and less than or equal to 320 MHz. In implementation, a Combination of a plurality of RUs in a frequency band interval less than or equal to 160 MHz may be indicated using a user information field at 160 MHz. When four RUs are combined in a 160 MHz frequency band interval, for example, a 484-tone RU, a 242-tone RU, a 484-tone RU, and a 242-tone RU, an information field of user to indicate every 80 MHz, to indicate a combination of a 484-tone RU and a 242-tone RU. In this case, two user information fields can indicate the combination of the four RUs. Additionally, when three 996-tone RUs are combined, each 996-tone RU is indicated by a user information field, and three user information fields may be required to indicate the combination of the three 996-tone RUs. Optionally, regardless of the bandwidth range of a combination of resource units, if the bandwidth range indicated by a user information field is not limited, a user information field indicates the plurality of resource units. resources. 2.2. Correspondence between a plurality of resource units indicated by a user information field and indexes In this implementation, the resource unit indication in the resource unit assignment subfield may indicate a plurality of resource units (which are called a combination of a plurality of resource units for ease of description). The station may be notified, in a manner defined by a protocol or by a signaling configuration, of a correspondence between possible combinations of a plurality of resource units and indexes. The AP may indicate one of the indexes using the resource unit indication, so that the station can determine a combination of a plurality of resource units based on the index indicated by the resource unit indication. ΜΛ / í UO JO In other words, unlike implementation 2.1, in implementation 2.2, the resource unit indication indicates a combination of a plurality of resource units. Table 4 includes the correspondence shown in Table 3, and further includes the meanings indicated by the values ​​69 to 127 of the resource unit indication, that is, indicating a combination of a plurality of resource units. ΜΛ / í UO JO Table 4 Correspondence between a value of the resource unit indication and “resource units or a combination of a plurality of resource units” Resource unit indication Indicated resource unit (or a combination of a plurality of resource units, a meaning or a description) (description) Quantity (number of entries) 0 to 36 Indicates respectively 37 26-tone RUs in 80 MHz ( possible cases of 26-tone RU on 80 MHz) 37 37 to 52 Indicates respectively 16 52-tone RUs on 80 MHz (possible cases of 52-tone RU on 80 MHz) 16 53 to 60 Indicates respectively eight 106-tone RUs on 80 MHz (possible cases of 106-tone RUs in 80 MHz) 8 61 to 64 Respectively indicate four 242-tone RUs in 80 MHz (possible cases of 242-tone RUs in 80 MHz) 4 65 and 66 Respectively indicate two 484-tone RUs on 80 MHz (possible cases of 484-tone RU on 80 MHz) 2 67 Indicates one 996-tone RU on 80 MHz (996-tone RU box on 80 MHz) 1 68 to 70 Two 996-tone RUs (as shown in FIGURE 37 to FIGURE 39) 3 71 Four 996-tone RUs (as shown in FIGURE 36) 1 72 to 75 A combination of a 106-tone low-frequency RU at 20 MHz at 80 MHz and a 26-tone RU tones at a center of 20 MHz (as shown in FIGURE 18) 4 (Each entry represents a 20 MHz frequency band interval, so four values ​​are required for a separate indication) 76 to 79 A combination of a 106-tone RU at high frequency at 20 MHz at 80 MHz and a 26-tone RU at a center of 20 MHz (as shown in FIGURE 19) 4 (Each entry represents a frequency band interval of 20 MHz , so four values ​​are required for a separate indication) 80 to 83 A combination of a 52-tone RU into a 4 (Each input Resource unit indication Indicated resource unit (or a combination of a plurality of resource units, a meaning or a description) (description) Quantity (number of entries) second lowest frequency at 20 MHz at 80 MHz and a RU of 26 tones, on the 20 MHz, which is on the same side and which is adjacent to the 52 tone RU (as shown in FIGURE 12) represents a 20 MHz frequency band interval, so four are required. values ​​for a separate indication) 84 to 87 A combination of a 52-tone RU at a second lower frequency at 20 MHz at 80 MHz and a 26-tone RU at a 20 MHz center (as shown in FIGURE 16) 4 (Each entry represents a 20 MHz frequency band interval, so four values ​​are required for separate indication) 88 to 91 A combination of a 52-tone RU at a second higher frequency at 20 MHz at 80 MHz and a continuous 26-tone RU on the same side as the 20 MHz one (as shown in FIGURE 14) 4 (Each entry represents a 20 MHz frequency band interval, so four values ​​are required for an indication separate) 92 to 95 A combination of a 52-tone RU at a second higher frequency at 20 MHz at 80 MHz and a 26-tone RU at a center of 20 MHz (as shown in FIGURE 17) 4 (Each input represents a frequency band interval of 20 MHz) 96 and 97 A combination of a 484-tone RU on 80 MHz and a 242-tone RU adjacent to the 484-tone RU (as shown in FIGURE 20 and FIGURE 21) 2 (Two inputs separately represent a 484-tone low-frequency RU and a 484-tone high-frequency RU) 98 and 99 A combination of a 484-tone RU on 80 MHz and a 242-tone RU that is not adjacent to the 484 tone RU (as shown in FIGURE 22 and FIGURE 23) 2 (Two inputs separately represent a 484 low frequency tone RU and a 484 high frequency tone RU) 100 A combination of two 242-tone RU on two 80 MHz sides (as shown in FIGURE 24) 1 101 and 102 A combination of a currently indicated 996-tone RU and a 484-tone RU that is on 80 MHz adjacent to the 996 RU tones and is not adjacent to the 996-tone RU (as shown in FIGURE 25 and FIGURE 26) 2 (Two entries separately represent that the 484-tone RU is located on 80 MHz ΜΛ / t / ZUZZ / U ί UO JO Resource unit indication Indicated resource unit (or a combination of a plurality of resource units, a meaning or a description) (description) Quantity (number of entries) adjacent to the lowest frequency and that the 484-tone RU is located on adjacent higher frequency 80 MHz) 103 and 104 A combination of a currently indicated 996-tone RU, a 484-tone RU that is on 80 MHz adjacent to the 996-tone RU, and that is not adjacent to the 996 RU tones, and a 242-tone RU (as shown in FIGURE 27 and FIGURE 28) 2 (Two entries separately represent that the 484-tone RU and the 242-tone RU are located on adjacent lower frequency 80 MHz and that the 484-tone RU and the 242-tone RU are located on adjacent 80 MHz of higher frequency) 105 and 106 A combination of one currently indicated 996-tone RU and two 242-tone RUs that are on 80 MHz adjacent to the RU 996-tone RUs (as shown in FIGURE 29 and FIGURE 30) 2 (Two entries separately represent that the two 242-tone RUs are located on adjacent lower frequency 80 MHz and that the two 242-tone RUs are located on adjacent 80 MHz of higher frequency) 107 A combination of two 996-tone RUs at the lower frequency and one 996-tone RU at the higher frequency of 320 MHz (as shown in FIGURE 32) 1 108 A combination of one 996-tone RU at the lowest frequency and two 996-tone RUs at the highest frequency of 320 MHz (as shown in FIGURE 33) 1 109 A combination of three 996-tone RUs at a lower frequency of 320 MHz (as shown in FIGURE 34) 1 110 A combination of three 996-tone RUs at the highest frequency of 320 MHz (as shown in FIGURE 35) 1 111 to 126 A combination of one 484-tone RU currently indicated at 80 MHz, a RU of 242 16 Resource unit indication Indicated resource unit (or a combination of a plurality of resource units, a meaning or a description) (description) Quantity (number of entries) tones, a 484-tone RU that is on 80 MHz adjacent to the 242-tone RU and a 242-tone RU (as shown in FIGURE 31 and related descriptions) 127 Reserved 1 In an optional implementation, the resource unit assignment subfield includes the resource unit indication, and the resource unit indication indicates the plurality of resource units. In Table 4, when a value or index indicated by the resource unit indication is 71 or any number between 107 and 110, the station cannot analyze which 80 MHz the frequency band interval indication indicates. Accordingly, in step 104, which the station determines, based on the resource unit allocation subfield, the plurality of resource units indicated by each user information field includes: for each user information field, the station determines the plurality of resource units indicated by the unit indication resource information field as the plurality of resource units indicated by the user information field. In another optional implementation, the resource unit assignment subfield includes the resource unit indication and the frequency band slot indication. The frequency band interval indication indicates 80 MHz, and the resource unit indication indicates the plurality of resource units. Correspondingly, in step 104, the station determines, based on the resource unit allocation subfield, the plurality of resource units indicated by the user information field includes: the station determines a band interval of frequency indicated by the frequency band interval indication; determines two resource units in the frequency band slot and two resource units in a lower frequency band slot adjacent to the frequency band slot or in a higher frequency band slot adjacent to the frequency band slot based on the indication of the resource unit; and uses the four resource units determined as the plurality of resource units indicated by the user information field. For example, in Table 4, when the value or index indicated by the resource unit indication is any number between 111 and 126, after determining the frequency band interval indicated by the band interval indication of frequency, the station further needs to determine another lower frequency band interval of 80 MHz adjacent to the frequency band interval or another higher frequency band interval of 80 MHz adjacent to the frequency band interval, and determine the combination of the plurality of resource units based on the index indicated by the resource unit indication. In another optional implementation, in step 104, the station determines, based on the resource unit allocation subfield, the plurality of resource units indicated by each user information field includes: for each user information field, the station determines a frequency band interval indicated by the frequency band interval indication; determines that the plurality of resource units indicated by the resource unit indication are resource units corresponding to the frequency band interval and one or more resource units in a frequency band interval adjacent to the resource units corresponding to the interval frequency band. For example, in Table 4, when the value or index indicated by the resource unit indication is any number between 68 to 70 or 101 to 106, the station may determine, in the implementation, the plurality of resource units indicated by the user information field. In another optional implementation, in step 104, the station determines, based on the resource unit allocation subfield, the plurality of resource units indicated by each user information field includes: the station determines a band slot of frequency indicated by the frequency band interval indication; and determines the plurality of resource units indicated by the resource unit indication from the frequency band interval. For example, in Table 4, when the value or index indicated by the resource unit indication is any number between 72 and 100, the station may determine, in the implementation, the plurality of resource units indicated by the resource units user information. It can be seen that in 2.2.1, resource units are assigned to the station using the frequency band interval indication, resource unit indication and related content in Table 4, and no new bits need to be added . This helps reduce resource overhead. 2. 2.2. The user information field includes a frequency band interval indication, a resource unit indication, and a resource unit combination indication. In the implementation, the user information field may also indicate the plurality of resource units using the three indications. The frequency band interval indication indicates a frequency band interval of 80 MHz. An optional value or index is shown in Table 2, and the details are not described again here. The resource unit indication indicates a resource unit in the frequency band interval. An optional value or index is shown in Table 3, and the details are not described again here. The resource unit combination indication indicates a combination of a plurality of resource units and the combination of the plurality of resource units includes the resource unit indicated by the resource unit indication. The combination of the plurality of resource units is used as the plurality of resource units indicated by the user information fields. The RU combination indication may also be referred to as a resource unit combination domain, a resource unit combination field, a combination domain, a combination field, or the like. The resource unit combination indication may occupy one bit, two bits, three bits, or the like. Optionally, a number of bits occupied by the resource unit combination indication is related to a number of resource unit combination solutions. The resource unit combination solution is a resource unit combination solution indicated by the resource unit indication. Furthermore, the bit locations occupied by the resource unit combination indication are not limited and may be continuous or discontinuous. The bits occupied by the resource unit combination indication may be added back to the user information field, use a reserved field, reuse another information field, or the like. For example, FIGURE 40 is a schematic diagram of a structure of a user information field according to an embodiment of this application. As shown in FIGURE 40, a trigger frame type-dependent station information field includes a multi-user spacing factor (MPDU MU Spacing Factor), a traffic identifier aggregation limit (TID Aggregation Limit), a resource unit combination indication bit 1 (RU Combination Bit 1), and a preferential access category (Preferred AC). The resource unit combination indication occupies two bits. A resource unit combination indication bit 0 may be a reserved bit in the user information field shown in FIGURE 2, and the resource unit combination indication bit 1 may be a bit in the field of station information dependent on the type of trigger frame in the user information field shown in FIGURE 40 In the structure shown in FIGURE 40, the resource unit allocation subfield (i.e., the frequency band slot indication and the resource unit indication) and the resource unit combination indication are two independent fields. . In another implementation, the resource unit assignment subfield and the resource unit combination indication may be combined into a single field. ΜΛ / í UO JO In other words, a plurality of functions of the frequency band slot indication, the resource unit indication, and the resource unit combination indication are implemented using a field. Field one can be implemented by extending an original resource unit assignment subfield, or by using a reserved bit. Accordingly, the station determining the plurality of resource units indicated by the user information fields includes: the station determining, based on the resource unit combination indication and the resource unit indicated by the resource unit indication resources, the combination of the plurality of resource units as the plurality of resource units indicated by the user information fields. The following is described using an example where the resource unit combination indication occupies two bits and a combination solution of a 106-tone RU and a 26-tone RU is shown in FIGURE 18 and FIGURE 19. The indication of resource unit can indicate a 106-tone RU using Table 2 and Table 3. A correspondence between a value or an index of the resource unit combination indication and each description or meaning is shown in Table 5. For example, when the frequency band interval indication is 00 and the resource unit indication is 53, it can be learned from Table 2 and Table 3 that a resource unit indicated by the resource unit indication is a first 106-tone RU in a third row in FIGURE 5. As shown in FIGURE 18, when the resource unit combination indication is 01, the user information field indicates a plurality of RUs, and the plurality of RU is the first 106-tone RU in the third row in FIGURE 5 and a fifth 26-tone RU in a first row in FIGURE 3. For another example, when the frequency band interval indication is 00 and the resource unit indication is 54, it can be learned from Table 2 and Table 3 that a resource unit indicated by the resource unit indication is a second 106-tone RU in a third row in FIGURE 5. As shown in FIGURE 19, when the resource unit combination indication is 01, the user information field indicates a plurality of RUs, and the plurality of RU is the second RU of 106 tones in the third row in FIGURE 5 and a fifth RU of 26 tones in a first row in FIGURE 3. ΜΛ / t / ZUZZ / U í UO JO Table 5 Resource Unit Combination Indication Meaning Bit 0 (upper bit) Bit 1 (lower bit) 0 0 Single RU (or user information field indicates one RU) 0 1 A combination of 106-tone RU and 26-tone RU (26-tone RU is a 26-tone RU that is in a 20 MHz center where the 106-tone RU is located) 1 0 Reserved 1 1 Reserved The following is described using an example where the resource unit combination indication occupies two bits and a combination solution of a 52-tone RU and a 26-tone RU is shown in FIGURE 12 to FIGURE 17. The indication of resource unit can indicate a 52-tone RU using Table 2 and Table 3. A correspondence between a value or an index of the resource unit combination indication and each description or meaning is shown in Table 6. For “being on the same side as and adjacent to”, see the descriptions in FIGURE 12 to FIGURE 17. The details are not described again here. For example, the resource unit indication may indicate a second 52-tone RU in a second row in FIGURE 5 using Table 2 and Table 3. In other words, as shown in FIGURE 16, when the resource unit indication frequency band interval is 00 and the resource unit indication is 38, if the resource unit combination indication is 01, the user information field indicates a plurality of RUs, and the plurality of RUs is the second RU of 52 tones in the second row in FIGURE 5 and a fifth RU of 26 tones in the first row of FIGURE 3. As shown in FIGURE 12, if the resource unit combination indication is 10, the user information indicates a plurality of RUs, and the plurality of RUs is the second 52-tone RU in the second row of FIGURE 5 and a second 26-tone RU in the first row of FIGURE 5. A similar indication can be used for another combination solution of a 52-tone RU and a 26-tone RU, so that the station can determine, according to the three indications, the plurality of resource units indicated by the information field of the user. ΜΛ / t / ZUZZ / U í UO JO Table 6 Resource unit indication Meaning Bit 0 (upper bit) Bit 1 (lower bit) 0 0 A single RU (no RU is combined with the 52-tone RU or the user information field indicates a RU) 0 1 A combination of 52-tone RU and 26-tone RU (the 26-tone RU is a 26-tone RU that is at a 20 MHz center where the 52-tone RU is located) 1 0 A combination of 52-tone RU and RU 26-tone RU (the 26-tone RU is a 26-tone RU, on 20 MHz where the 52-tone RU is located, which is on the same side and is contiguous to the 52-tone RU) 1 1 Reserved The following is described using an example where the resource unit combination indication occupies two bits and a combination solution of a 484-tone RU and a 242-tone RU is shown in FIGURE 20 to FIGURE 23. The indication of resource unit can indicate a 484-tone RU using Table 2 and Table 3. A correspondence between a value or an index of the resource unit combination indication and each description or meaning is shown in Table 7. For example, the resource unit indication may indicate a first RU of 484 tones in a fifth row in FIGURE 5 using Table 2 and Table 3. In other words, as shown in FIGURE 20, when the resource unit indication frequency band interval is 00 and the resource unit indication is 65, if the resource unit combination indication is 01, the user information field indicates a plurality of RUs, and the plurality of RUs is the first RU of 484 tones in the fifth row in FIGURE 5 and a third RU of 242 tones in the fourth row of FIGURE 3. As shown in FIGURE 22, if the resource unit combination indication is 10, the user information indicates a plurality of RUs, and the plurality of RUs is the first 484-tone RU in the fifth row in FIGURE 5 and a fourth 26-tone RU in the fourth row of FIGURE 5. A similar indication can be used for another combination solution of a 484-tone RU and a 242-tone RU, so that the station can determine, according to the three indications, the plurality of resource units indicated by the information field of the user. The details are not described here again. ΜΛ / / UO JO Table Ί RU Combination Domain Meaning Bit 1 Bit 0 0 0 Single RU 0 1 A combination of a 484-tone RU and a 242-tone RU adjacent to the 484-tone RU 1 0 A combination of a 484-tone RU and a 242-tone RU 242 tones that are not adjacent to the RU of 484 tones 1 1 Reserved The following is described using an example where the resource unit combination indication occupies two bits and a 242-tone RU and 242-tone RU combination solution is shown in FIGURE 24. A correspondence is shown in Table 8. between a value or an index of the combination indication of resource units and each description or meaning. For example, the resource unit indication may indicate a first RU of 242 tones in a fourth row in FIGURE 5 using Table 2 and Table 3. In other words, as shown in FIGURE 24, when the resource unit indication frequency band interval is 00 and the resource unit indication is 61, if the resource unit combination indication is 01, the user information field indicates a plurality of RUs, and the plurality of RUs is the first RU of 242 tones in the fourth row in FIGURE 5 and a final RU of 242 tones in the fourth row of FIGURE 5. If the resource unit combination indication is 00, the user information field indicates an RU: the first RU of 242 tones in the fourth row of FIGURE 5. Table 8 RU Combination Domain Meaning Bit 1 Bit 0 0 0 Single RU 0 1 A combination of two 242-tone RUs on an 80 MHz outer side 1 0 Reserved 1 1 Reserved The following is described using an example where the resource unit combination indication occupies two bits and a combination solution of a 996-tone RU and a 484-tone RU is shown in FIGURE 25 and FIGURE 26. In Table 9 shows a correspondence between a value or index of the resource unit combination indication and each description or meaning. For example, as shown in FIGURE 25, when the frequency band interval indication is 00 and the resource unit indication is 67, if the resource unit combination indication is 01, the user information field indicates a plurality of RUs, and the plurality of RUs is a first RU of 996 tones in a third row in FIGURE 25 and a last RU of 484 tones in a second row in FIGURE 25. If the indication of combination of units of resources is 10, the plurality of RUs indicated by the user information field is a combination of RUs shown in FIGURE 28. If the resource unit combination indication is 11, the plurality of RUs indicated by the user information field User information is a combination of RUs shown in FIGURE 29. ΜΛ / í UO JO Table 9 RU Combination Domain Meaning Bit 1 Bit 0 0 0 Single RU 0 1 A combination of a 996-tone RU and a 484-tone RU that is not adjacent to the 996-tone RU 1 0 A combination of a 996-tone RU and one 484-tone RU and one 242-tone RU that are not adjacent to the 996-tone RU 1 1 A combination of one 996-tone RU and two 242-tone RUs that are adjacent to the 996-tone RU and are in the outer side of 80 MHz The following is described using an example where the resource unit combination indication occupies two bits and a combination solution is shown in FIGURE 25 to FIGURE 30. A correspondence between a value or an index is shown in Table 10 of the combination indication of resource unit and each description or meaning. The currently indicated 996-tone RU is a 996-tone RU determined based on the frequency band interval indication and resource unit indication. Optionally, in Table 10, it may be required that in a combination of a plurality of RUs in a frequency band interval greater than 80 MHz, the resource unit indication may indicate a 996-tone RU at a frequency lower, for example, a RU 996 tones corresponding to 80 MHz primary. Optionally, the resource unit indication in Table 10 may also indicate any 80 MHz in the bandwidth. For example, when the frequency band interval indication is 01 and the resource unit indication is 67, if the resource unit combination indication is 000, the plurality of RUs indicated by the user information field is a RU combination shown in FIGURE 26. For another example, when the frequency band interval indication is 00 and the resource unit indication is 67, if the resource unit combination indication is 001, the plurality of RUs indicated by the user information field is a combination of RUs shown in FIGURE 25. For another example, when the frequency band slot indication is 01 and the resource unit indication is 67, if the resource unit combination indication is 010, the plurality of RUs indicated by the user information field is a combination of RUs shown in FIGURE 28. For another example, when the frequency band slot indication is 00 and the resource unit indication is 67, if the resource unit combination indication is 011, the plurality of RUs indicated by the user information field is a combination of RUs shown in FIGURE 27. For another example, when the frequency band interval indication is 00 and the resource unit indication is 67, if the resource unit combination indication is 100, the plurality of RUs indicated by the user information field is a combination of RUs shown in FIGURE 34. For another example, when the frequency band interval indication is 11 and the resource unit indication is 67, if the resource unit combination indication is 101, the plurality of RUs indicated by the user information field is a combination of RUs shown in FIGURE 32. For another example, when the frequency band interval indication is 00 and the resource unit indication is 67, if the resource unit combination indication is 110, the plurality of RUs indicated by the user information field is a combination of RUs shown in FIGURE 33. Table 10 Resource unit combination indication Meaning 0 means 000 A combination of a currently indicated 996-tone RU and a 484-tone RU that is at a lower frequency of 80 MHz adjacent to the 996-tone RU and is not adjacent to the 996-tone RU 1 means 001 A combination of a currently indicated 996-tone RU and a 484-tone RU that is at a higher frequency of 80 MHz adjacent to the 996-tone RU and is not adjacent to the 996 tone RU Resource Unit Combination Indication Meaning 2 means 010 A combination of a currently indicated 996-tone RU and a 484-tone RU and a 242-tone RU that are at a lower frequency of 80 MHz adjacent to the 996 RU tones 3 means 011 A combination of a currently indicated 996-tone RU and a 484-tone RU and a 242-tone RU that are at a higher frequency of 80 MHz adjacent to the 996-tone RU 4 means 100 A combination of a currently indicated 996-tone RU, a 996-tone RU, and a 996-tone RU 5 means 101 A combination of a currently indicated 996-tone RU, a 996-tone RU, a 996-tone RU that is not assigned to the station and a 996-tone RU 6 means 110 A combination of a currently indicated 996-tone RU, a 996-tone RU that is not assigned to the station, a 996-tone RU, and a 996-tone RU 7 means 111 Reserved ΜΛ / t / ZUZZ / U í UO JO Optionally, the resource unit combination indication may also indicate a 996-tone RL combination other than the 996-tone RU indicated by the resource unit indication. Optionally, the resource unit combination indication may occupy one bit. In the resource unit combination indication shown in Table 6, a bit may separately indicate that no RU is combined with the RU indicated by the resource unit indication, and that a 26-tone RU is combined with the RU indicated by the resource unit indication. For more information, see Table 11. Table 11 Resource Unit Combination Indication Meaning 0 Single RU 1 A combination of 106-tone RU and 26-tone RU Optionally, a bit occupied by the resource unit combination indication may indicate whether a 52-tone RU is combined with a 26-tone RU at a 20 MHz center where the 52-tone RU is located, as shown. shown in Table 12. It can be seen that compared with the combination solution shown in Table 6, the combination solution shown in Table 12 can reduce the required bit overhead. Table 12 Resource Unit Combination Indication Meaning 0 Single RU 1 A combination of a 52-tone RU and a 26-tone RU located in a facility Optionally, a bit occupied by the resource unit combination indication may indicate whether a 52-tone RU is combined with a 26-tone RU that is on the same side and is adjacent to the 52-tone RU, such as is shown in Table 13. It can be seen that compared with the combination solution shown in Table 6, the combination solution shown in Table 13 can reduce the required bit overhead. Table 13 Resource Unit Combination Indication Meaning 0 Single RU 1 A combination of a 52-tone RU and a 26-tone RU that is on the same side and is adjacent to the 52-tone RU Similarly, a bit occupied by the resource unit combination indication may indicate whether a 484-tone RU in Table 7 is combined with a 242-tone RU adjacent to the 484-tone RU, or whether a 484-tone RU tones in Table 7 is combined with a 242-tone RU that is not adjacent to the 484-tone RU. In Table 8, a bit may also indicate a combination of a 242-tone RU and a 242-tone RU. For example, when a resource unit combination indication value is 0, it indicates a single 242-tone RU. When a resource unit combination indication value is 1, it indicates two 242-tone RUs. It can be seen that in the implementation, for a case where a plurality of resource units are assigned to a station, the trigger frame does not need two user information fields for indication, and only one user information field is required for indication. In other words, a user information field corresponding to a resource unit that needs to be assigned to the station or a user information field corresponding to the station may indicate a combination and assignment of a plurality of RUs. It can be seen that a number of bits occupied by the resource unit combination indication can be determined based on a RU combination solution and selection flexibility. In the implementation, regardless of the bandwidth size, a user information field may indicate a combination of a plurality of resource units. Alternatively, for high bandwidth, two user information fields may indicate a combined RU solution on 80 MHz corresponding to each user information field. The first part describes how to select a plurality of user info fields in the user info list field that are equal to the association identifier of the station, or optional implementations. For a plurality of user information fields, each user information field may indicate a resource unit in the above implementation 2.1, or may indicate a combination of a plurality of resource units in the above implementation 2.2.1 or implementation 2.2 .2. Therefore, a plurality of resource units can be assigned to the station in the first part. 2. The trigger frame includes a user information field that is the same as the station association identifier. In the implementation, a user information field may be used to configure a plurality of resource units for the station. The user information field may be the user information field in the above implementation 2.2.1 or 2.2.2, to indicate a plurality of resource units. The user information field may include a frequency band interval indication and a resource unit indication. Alternatively, the user information field may include a frequency band slot indication, a resource unit indication, and a resource unit combination indication. FIGURE 41 is a schematic flowchart of a resource allocation method according to an embodiment of this application. As shown in FIGURE 41, the resource allocation method includes the following stages. 201: An access point determines a plurality of resource units assigned to a station. 202: The access point sends a trigger frame, wherein the trigger frame includes a user information field that is the same as an association identifier of the station, and the user information field indicates the plurality of units of resources assigned to the station. 203: The station receives the trigger frame and determines the plurality of allocated resource units based on the trigger frame. The station determining the plurality of allocated resource units based on the trigger frame includes: the station selecting, from a list information field of ΜΛ / t / ZUZZ / U í UO JO user, a user information field that is the same as the association identifier of the station, where the association identifier of the station is the same as an association identifier indicated by an association identifier field; and determines the plurality of resource units indicated by the user information field, wherein the plurality of resource units indicated by the user information field are the plurality of resource units assigned to the station. A way in which the station selects, from the user information list field, a user information field that is the same as the association identifier of the station may be the optional implementation of the above implementation 1.1 to 1.4, but It is not limited to previous implementations. For how the station determines a plurality of resource units indicated by a resource unit allocation subfield, please refer to the related descriptions in the previous implementations 2.2.1 and 2.2.2. The details are not described here again. In embodiments of this application, regardless of the bandwidth range of a RU combination, if the range of a RU combination indicated by a user information field is not limited, a user information field may indicate a solution of combination of RU. For example, the user information field in the above implementation 2.2.1 may indicate a combination of a plurality of RUs in 80 MHz, for example, a RU combination solution that may be indicated when a value of the unit indication of resource in Table 4 is any number between 72 and 100. Alternatively, the user information field in the above implementation 2.2.2 may indicate a combination of a 106-tone RU and a 26-tone RU shown in Table 5, a combination of a 52-tone RU and a 26-tone RU shown in Table 6, a combination of a 484-tone RU and a 242-tone RU shown in Table 7, a combination of a 242-tone RU and a 242-tone RU shown in Table 8, or like it. The user information field in the previous implementation 2.2.1 may indicate a combination of RUs in a frequency band interval greater than 80 MHz but less than or equal to 160 MHz. When a value of the resource unit indication is any number between 101 and 106 in Table 4, a RU combination solution in the range can be indicated. Alternatively, the user information field in the above implementation 2.2.2 may indicate a combination of RUs in a frequency band interval greater than 80 MHz but less than or equal to 160 MHz. As shown in Table 9, an indication of frequency band slot and a resource unit indication in a user information field may indicate a 996-tone RU, and a combination indication ΜΛ / í UO JO of resource units may indicate a possible 996-tone RU combination solution. The user information field in the previous implementation 2.2.1 may indicate a combination of RUs in a frequency band interval greater than 160 MHz but less than or equal to 320 MHz. When a value of the resource unit indication is any number between 107 and 110 in Table 4, a RU combination solution in the interval can be indicated. Alternatively, the user information field in the previous implementation 2.2.2 may indicate a combination of RUs in a frequency band interval greater than 80 MHz. In the solution shown in Table 10, the unit combination indication resource unit can occupy three bits, and the three-bit resource unit combination indication includes a bit that is newly added to the user information field. For example, when the frequency of a RU is greater than 80 MHz, an uplink dual carrier modulation field can be reused as a resource unit combination indication. It can be seen that, in implementation 2.2.2, when a frequency of a RU is less than or equal to 80 MHz, the resource unit combination indication can use two bits or one bit for the indication, as shown in the Table 5 to Table 8 and Table 11 to Table 13. The resource unit combination indication may use two bits to indicate a combination of RUs in a frequency band range greater than 80 MHz but less than or equal to 160 MHz. As shown in Table 9, the resource unit combination indication is located in a user information field corresponding to a 996 tone RU that is to be assigned to the station. As shown in Table 10, the resource unit combination indication can use three bits to indicate a combination of RUs in a frequency band range greater than 80 MHz. Optionally, in Table 10, it may be required that in a combination of a plurality of RUs in a frequency band interval greater than 80 MHz, the resource unit indication may indicate a 996-tone RU at a frequency higher than 80 MHz. low. It can be seen that, in the resource allocation method shown in FIGURE 41, the plurality of resource units are allocated to the station using a user information field, to reduce the overhead of the user information field. Furthermore, in this specification, the resource allocation methods described in the previous two parts can be applied to the same network structure. For example, a combination of a plurality of RUs may be configured for some stations, and one RU may be configured for other stations based on the volume of data each station needs to transmit, a data priority, or the like. This is not limited to the modalities of this ΜΛ / t / ZUZZ / U í UO JO request. The resource allocation methods described in the previous two parts can be applied to the same station. For example, a combination of a plurality of RUs or one RU may be configured for the station based on data volumes that the station must transmit at different times, different data priorities, or the like. This is not limited to the modalities of this application. In conclusion, this application provides a method of resource allocation. The access point sends the trigger frame to the station. The trigger frame includes the plurality of user information fields that are equal to the association identifier of the station, and each user information field indicates a resource unit assigned to the station, to allocate a plurality of resource units to the station, as shown in related content in the previous application 2.1. In another resource allocation method, the trigger frame includes a user information field that is the same as the association identifier of the station, and the user information field indicates a plurality of resource units assigned to the station. , to assign a plurality of resource units to the station, to reduce the use of a user information field. The user information field may be the user information field in the above implementation 2.2.1, and may indicate the plurality of resource units using Table 2, Table 3, the resource unit indication and the interval indication frequency band. The user information field can be redesigned. As described in implementation 2.2.2, the resource unit combination indication is added to the user information field. To be specific, the resource unit allocation subfield in the trigger frame is redesigned, and the resource unit combination indication is set by reusing another information field or a reserved field, or adding a new bit, to indicate a combination of a plurality of resource units such as the resource units indicated by the user information field. In another resource allocation method, the trigger frame includes the plurality of user information fields that are the same as the association identifier of the station, and each user information field indicates the plurality of resource units assigned to the station, as shown in implementation 2.2.1 and 2.2.2. It can be seen that in the method, more resource units can be allocated to the station when a bandwidth interval of a combination of RUs indicated by a user information field is limited. 3. Resource unit allocation method in downlink transmission This application also provides a method of assigning resource units, ΜΛ / t / ZUZZ / U / UO JO and resource unit allocation method is used to allocate a resource unit occupied by downlink transmission to a station. An access point can send a PPDU preamble message to the station. As shown in FIGURE 42, the PPDU preamble message includes a User Information field and a Common field. The common field is used to indicate RU mapping information, and the user information field includes a series of user fields (User field). It should be noted that the user information field is a field in the PPDU preamble message in the downlink transmission, and is different from the user information field in the uplink transmission in the above embodiments. Each user field indicates a RU or a combination of a plurality of RUs, and is assigned to a corresponding station. As shown in Table 14, the user field may include fields such as a user identifier, a spatial flow configuration, a modulation and coding scheme, and a coding domain. Additionally, fields other than the user ID can also be moved to a last field of a combined user domain. The user field also includes a newly added continuous field and a “RU number or RU mapping bitmap” field. The continuous field may include two bits. A continuous field value of 0 indicates that a single RU is assigned to the station. In this case, the “RU Number or RU Mapping Bitmap” field does not exist. A value of 1 of the continuous field indicates that a plurality of continuous RUs are assigned to the station. In this case, a value of the “RU number or RU assignment bitmap” field indicates a number of RUs assigned to the station. A value of 2 of the solid field indicates that a plurality of dashed RUs are assigned to the station. In this case, a value of the “RU Number or RU Allocation Bitmap” field indicates an allocation result of future X (for example, X equals 9) RUs. If one of the future X RUs is assigned to the station, the corresponding bit is set to 1; otherwise, a corresponding bit is set to 0. If a value of the mapping bitmap field is 0, it indicates that none of the future X RUs are mapped to the STA, and a user field corresponding to a future ( X+1)th You can jump directly to RU to read. ΜΛ / í UO JO Table 14 Subdomain in a user field Number of bits Description User identifier (STA-ID) 11 Lower 11 bits of a user AID, which are the same as in 802.11ax Subdomain in a user field Number of bits Description Spatial Stream Configuration 4 or 5 or 6 Indicate the spatial stream configuration, which is the same as in 802.11ax, and the number of bits may be different Modulation scheme and coding (MCS) 4 Indicate a modulation and coding sequence number, which is the same as in 802.11ax Coding (Coding) 1 Indicate a form of coding, which is the same as in 802.11 ax Continuous field (Continuous) 2 0 : single RU; 1: a plurality of continuous RUs; 2: a plurality of discontinuous RUs; and 3: reserved A RU Num or RU Allocation bitmap field X When a single RU is assigned to a station, the field may not exist; when a plurality of continuous RUs are assigned to the station, the field indicates a number of RUs; and when a plurality of discontinuous RUs are assigned to the station, the field indicates whether the future X RUs are assigned to a bitmap of the STA For example, it is assumed that the same as the station user identifier. If a value of the RU assignment bitmap field is 010000900, it indicates that the station is assigned a RU corresponding to a third user field in the user information field. If the value of the RU assignment bitmap field is 000000000, it indicates that none of the RUs corresponding to a second user field to a tenth user field in the user information field are assigned to the station. The station needs to jump to an eleventh user field to read whether a user identifier in the eleventh user field is the same as the station identifier. If the user identifier in the eleventh user field is the same as the station identifier, the station can read the value of the RU allocation bitmap field of the eleventh user field, to determine whether the RUs corresponding to a twelfth user field to twenty user field are the RUs assigned to the station. Similar operations are performed until the user information field is completely parsed. It can be seen that, in the resource allocation method, the access point can allocate a plurality of resource units to a user in a multi-user transmission. The above embodiments of this application describe the method provided in the embodiments of this application from the perspectives of the access point and the station. To implement functions in the method provided in embodiments of this application, the access point and the station may include a hardware structure and a software module, and implement the functions in the form of a hardware structure, a software module, or a combination of The hardware structure and the software module. A function of the above functions can be realized in the form of hardware structure, software module, or a combination of hardware structure and software module. FIGURE 43 is a schematic diagram of a structure of a communication apparatus according to an embodiment of this application. As shown in FIGURE 43, a communication apparatus 4300 includes a communication unit 4301 and a processing unit 4302. The communication unit 4301 may include a sending unit and a receiving unit. The sending unit is configured to implement a sending function, the receiving unit is configured to implement a receiving function, and the communication unit 4301 may implement a sending function and / or a receiving function. The communication unit can also be described as a transceiver unit. The communication device 4300 may be a station, or may be a device in a station, or may be a device that can be used in conjunction with an access point. In one implementation, the communication apparatus 4300 includes a communication unit 4301 and a processing unit 4302. The communication unit 4301 is configured to receive a trigger frame from an access point. The trigger frame includes a plurality of user information fields that are equal to an association identifier of the communication apparatus, and each user information field indicates one or more resource units assigned to the communication apparatus; or the trigger frame includes a user information field that is the same as an association identifier of the communication apparatus, and the user information field indicates a plurality of resource units assigned to the communication apparatus. The processing unit 4302 is configured to determine the plurality of allocated resource units based on the trigger frame. For the related content of this implementation, please refer to the related content of the previous method modalities. The details are not described here again. The communication device 4300 may be an access point, or may be a device in an access point, or may be a device that can be used in conjunction with a station. In one implementation, the communication apparatus 4300 includes: ΜΛ / t / ZUZZ / U í UO JO a processing unit 4302, configured to determine a plurality of resource units assigned to a station; and a communication unit 4301, configured to send a trigger frame to the station, wherein the trigger frame includes a plurality of user information fields that are equal to an association identifier of the station, and each information field user indicates one or more resource units assigned to the station; or the trigger frame includes a user information field that is the same as an association identifier of the station, and the user information field indicates the plurality of resource units assigned to the station. For the related content of this implementation, please refer to the related content of the previous method modalities. The details are not described here again. It can be seen that, in embodiments of this application, the access point may use the trigger frame to allocate the plurality of resource units to the station. FIGURE 44 is a schematic diagram of a structure of another communication apparatus according to an embodiment of this application. A communication apparatus 4400 may be an access point, or may be a station, or may be a chip, a chip system, a processor or the like that supports an access point by implementing the above method, or may be a chip , a chip system, a processor or the like that supports a station in the implementation of the previous method. The apparatus may be configured to implement the method described in the method embodiment above. For details, please refer to the descriptions in the above method modality. The communication apparatus 4400 includes one or more processors 4401. The processor 4401 may be a general purpose processor, a dedicated processor, or the like. The processor 4401 may be configured to control the communication apparatus (e.g., an access point, an access point chip, a station, or a station chip), execute a software program, and process data in the software program. Optionally, the communication apparatus 4400 may include one or more memories 4402 that store instructions 4404. The instructions may be executed by the processor 4401, to allow the communication apparatus 4400 to perform the method described in the method embodiments above. Optionally, memory 4402 can also store data. The processor 4401 and memory 4402 may be arranged separately or may be integrated together. Optionally, the communication apparatus 4400 may further include a transceiver 4405 and an antenna 4406. The transceiver 4405 may be referred to as a transceiver unit, transceiver machine, transceiver circuit, or the like, and is configured to ΜΛ / í UO JO implement a transceiver function. The transceiver 4405 may include a receiver and a transmitter. The receiver may be called a receiver, receiving circuit, or the like, and is configured to implement a receiving function. The transmitter may be called a transmitter, transmission circuit, or the like, and is configured to implement a sending function. The communication device 4400 is an access point. The processor 4401 is configured to perform step 101 in FIGURE 8 or perform step 101 in FIGURE 41. The transceiver 4405 is configured to perform step 102 in FIGURE 8 or step 202 in FIGURE 41. The communication device 4400 is a station. The processor 4401 is configured to perform an operation of determining a plurality of allocated resource units in step 103 in FIGURE 8, or perform an operation of determining a plurality of allocated resource units in step 203 in FIGURE 41 The transceiver 4405 is configured to perform a trigger frame receiving operation in step 103 of FIGURE 8, or to perform a trigger frame receiving operation in step 203 in FIGURE 41. In another possible design, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit configured to implement the receiving and sending functions may be separated or integrated together. The transceiver circuit, interface or interface circuit may be configured to read and write code or data. Alternatively, the transceiver circuit, interface or interface circuit may be configured to transmit or transfer a signal. In yet another possible design, optionally, the processor 4401 may store instructions 4403. The instructions 4403 may be executed by the processor 4401, to allow the communication apparatus 4400 to perform the method described in the method embodiments above. Instructions 4403 may be set to processor 4401. In this case, processor 4401 may be implemented by hardware. In yet another possible design, the communication apparatus 4400 may include a circuit. The circuit may implement a sending function, a receiving function or a communication function in the embodiments of the above method. The processor and transceiver described in this application may be implemented in an integrated circuit (IC), an analog IC, a radio frequency integrated circuit (RFIC), a hybrid signal IC, an application-specific integrated circuit (IC). specific integrated Circuit, ASIC), a printed circuit board (PCB), an electronic device, or similar. The communication apparatus described in the previous embodiments may be a point ΜΛ / t / ZUZZ / U í UO JO access or a station. However, the scope of the communication apparatus described in this application is not limited thereto, and the structure of the communication apparatus may not be limited by FIGURE 44. The communication apparatus may be an independent device or may be part of a relatively large device. For example, the communication device can be: (1) an independent integrated circuit IC, chip, or chip system or subsystem; (2) an assembly including one or more integrated circuits, wherein optionally, the integrated circuit assembly may further include a storage component configured to store data and instructions; (3) an ASIC, for example, a modem (Modem); (4) a module that can be integrated into another device; (5) a receiver, a smart terminal, a wireless device, a wearable device, a mobile unit, a vehicle-mounted device, a cloud device, an artificial intelligence device and the like; or (6) another device, or similar. For a case where the communication apparatus may be a chip or a chip system, refer to a schematic diagram of a chip structure shown in FIGURE 45. As shown in FIGURE 45, a 4500 chip includes a processor 4501 and one interface 4502. There may be one or more processors 4501 and one or more interfaces 4502. For a case where the chip is configured to implement functions of a station in embodiments of this application, see the following descriptions. In one implementation, interface 4502 is configured to receive a trigger frame from an access point. The trigger frame includes a plurality of user information fields that are equal to an association identifier of the station, and each user information field indicates one or more resource units assigned to the station; or the trigger frame includes a user information field that is the same as an association identifier of the station, and the user information field indicates a plurality of resource units assigned to the station. The processor 4501 is configured to determine the plurality of allocated resource units based on the trigger frame. For a case where the chip is configured to implement functions of an access point in embodiments of this application, see the following descriptions. In one implementation, processor 4501 is configured to determine a plurality of resource units assigned to a station. Interface 4502 is configured to send a trigger frame to the station, in ΜΛ / í UO JO where the trigger frame includes a plurality of user information fields that are equal to an association identifier of the station, and each user information field indicates one or more resource units assigned to the station season; or the trigger frame includes a user information field that is the same as an association identifier of the station, and the user information field indicates the plurality of resource units assigned to the station. Optionally, the chip further includes a memory 4503, wherein the memory 4503 is configured to store program instructions and data that are necessary for a terminal device. A person skilled in the art may further understand that various illustrative logical blocks and steps listed in the embodiments of this application may be implemented using electronic hardware, computer software, or a combination thereof. Whether functions are implemented by hardware or software depends on the particular applications and the design requirements of the entire system. A person skilled in the art may use various methods to implement the functions described for each particular application, but the implementation should not be considered to go beyond the scope of the embodiments of this application. This application further provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer-readable storage medium is executed by a computer, a function of any of the embodiments of the above method is implemented. This application further provides a computer program product. When the computer program product is executed by a computer, functions of any of the above method embodiments are implemented. All or some of the modalities may be implemented using software, hardware, firmware or any combination thereof. When software is used to implement modalities, all or some of the modalities may be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When computer instructions are loaded and executed on a computer, procedures or functions according to embodiments of this application are generated in whole or in part. The computer may be a general purpose computer, a dedicated computer, a computer network, or other programmable device. Computer instructions may be stored on a computer-readable storage medium or may be transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, computer instructions ΜΛ / t / ZUZZ / U í UO JO may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center in a wired manner (for example, a coaxial cable, an optical fiber or digital subscriber line (DSL) or wireless (for example, infrared, radio or microwave). The computer-readable storage medium may be any usable medium accessible by the computer, or a data storage device, such as a server or data center, that integrates one or more usable media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk or a magnetic tape), an optical medium (for example, a high-density digital video disc (DVD)), a semiconductor (for example, a solid-state disk (SSD)), or similar. A person of ordinary skill in the art can understand that various numbers such as “first” and “second” in this application are used simply to differentiate for ease of description, and are not used to limit the scope of the embodiments of this application or represent a sequence. The mappings shown in the tables in this application can be configured or predefined. The information values ​​in the tables are merely examples, and other values ​​can be configured. This is not limited in this application. When you configure a correspondence between the information and each parameter, it is not necessary to configure all the correspondences shown in the tables. For example, in the tables in this request, the mappings displayed in some rows may alternatively not be configured. For another example, warps and appropriate adjustments, such as splitting and combining, can be made based on the tables above. The parameter names shown in the table titles above may alternatively be other names that can be understood by a communication apparatus, and the values ​​or forms of representation of the parameters may alternatively be other values ​​or forms of representation. representation that can be understood by the communication apparatus. During the implementation of the above tables, another data structure, such as an array, a queue, a container, a stack, a linear table, a pointer, a linked list, a tree, a graph, a structure, a class, a stack, or a hash table, can be used alternatively. “Predefine” in this application may be understood as “define”, “predefine”, “store”, “pre-store”, “pre-negotiate”, “pre-configure”, “solidify” or “pre-burn”. One skilled in the art may know that, with reference to the examples described in the embodiments disclosed in this specification, the units and steps of the algorithm may be implemented by electronic hardware or a combination of software. ΜΛ / í UO JO computer science and electronic hardware. Whether functions are performed by hardware or software depends on the particular applications and the design constraints of the technical solutions. A person skilled in the art may use different methods to implement the functions described for each particular request, but the implementation should not be considered to go beyond the scope of this request. A person skilled in the art can clearly understand that, for the purpose of a brief and convenient description, for a detailed work process of the above system, apparatus and unit, refer to a corresponding process in the embodiments of the above method, and the details They are not described again here. The above descriptions are simply specific implementations of this application, but are not intended to limit the scope of protection of this application. Any variation or replacement readily ascertained by a person skilled in the art within the technical scope disclosed in this application will be within the protective scope of this application. Therefore, the scope of protection of this application will be subject to the scope of protection of the claims.

Claims

1. A resource allocation method, characterized in that it comprises: receiving, by a station, a firing frame from an access point, wherein the firing frame comprises a user information field comprising an association identifier that is the same as an association identifier of the station, and the user information field indicates a plurality of resource units allocated to the station; and determining, by the station, the plurality of resource units allocated based on the firing frame.

2. The method according to claim 1, characterized in that the determination, by the station, of the plurality of resource units allocated based on the firing frame comprises: selecting, by the station from the firing frame, a user information field that is the same as the station's association identifier; and for the selected user information field, determining, by the station, more than one resource unit indicated by the user information field, wherein the more than one resource unit indicated by the selected user information field is the plurality of resource units allocated to the station.

3. The method according to claim 2, characterized in that the user information field comprises a frequency band interval indication and a resource unit indication, the frequency band interval indication indicates a frequency band interval of 80 MHz in a bandwidth, and the resource unit indication indicates more than one resource unit; and the determination, by the station, of more than one resource unit indicated by the user information field comprises: determining, by the station on the basis of the frequency band interval indicated by the frequency band interval indication, the more than one resource unit indicated by the resource unit indication.

4. The method according to claim 3, characterized in that the frequency band interval indicated by the frequency band interval indication is any of the following: a primary frequency band interval of 80 MHz, a secondary frequency band interval of 80 MHz, a third frequency band interval of 80 MHz, and a fourth frequency band interval of 80 MHz.

5. The method according to claim 3, characterized in that the plurality of resource units indicated by the resource unit indication is a plurality of resource units corresponding to any of the following combinations: a combination of a fourth resource unit at a lower frequency in a 20 MHz frequency band interval within the 80 MHz frequency band interval and a fifth resource unit at the center of the 20 MHz frequency band interval; a combination of a fourth resource unit at a higher frequency in a 20 MHz frequency band interval within the 80 MHz frequency band interval and a fifth resource unit at the center of the 20 MHz frequency band interval; wherein the fifth resource unit is a resource unit comprising 26 subcarriers, and the fourth resource unit is a resource unit comprising 106 subcarriers.

6. The method according to claim 3, characterized in that the plurality of resource units indicated by the resource unit indication is a plurality of resource units corresponding to any of the following combinations: a combination of a sixth resource unit at a second lower frequency in a 20 MHz frequency band interval within the 80 MHz frequency band interval and a fifth resource unit in the 20 MHz frequency band interval, wherein the fifth resource unit is on the same side as and adjacent to the sixth resource unit; a combination of a sixth resource unit at a second lower frequency in a 20 MHz frequency band interval within the 80 MHz frequency band interval and a fifth resource unit in the center of the 20 MHz frequency band interval;a combination of a sixth resource unit at a second higher frequency in a 20 MHz frequency band interval within the 80 MHz frequency band interval and a fifth resource unit in the 20 MHz frequency band interval, wherein the fifth resource unit is on the same side as the sixth resource unit and is adjacent to the sixth resource unit; a combination of a sixth resource unit at a second higher frequency in a 20 MHz frequency band interval within the 80 MHz frequency band interval and a fifth resource unit in the center of the 20 MHz frequency band interval; wherein the sixth resource unit is a resource unit comprising 52 subcarriers, and the fifth resource unit is a resource unit comprising 26 subcarriers.

7. The method according to claim 3, characterized in that the plurality of resource units indicated by the resource unit designation is a plurality of resource units corresponding to any of the following combinations: a combination of a second resource unit and a third resource unit in the 80 MHz frequency band range, wherein the third resource unit is adjacent to the second resource unit; a combination of a second resource unit and a third resource unit in the 80 MHz frequency band range, wherein the third resource unit is not adjacent to the second resource unit; wherein the third resource unit is a resource unit comprising 242 subcarriers, and the second resource unit is a resource unit comprising 484 subcarriers.

8. The method according to claim 3, characterized in that the plurality of resource units indicated by the resource unit indication is a plurality of resource units corresponding to any of the following combinations: a combination of a first resource unit corresponding to the 80 MHz frequency band interval and a second resource unit that is in a lower frequency 80 MHz frequency band interval and is not adjacent to the first resource unit, wherein the 80 MHz frequency band interval indicated by the frequency band interval indication is adjacent to the lower frequency 80 MHz frequency band interval;a combination of a first resource unit corresponding to the 80 MHz frequency band interval and a second resource unit that is in a higher frequency 80 MHz frequency band interval and is not adjacent to the first resource unit, wherein the 80 MHz frequency band interval indicated by the frequency band interval indication is adjacent to the higher frequency 80 MHz frequency band interval; wherein the first resource unit is a resource unit comprising 996 subcarriers, the second resource unit is a resource unit comprising 484 subcarriers.

9. The method according to claim 3, characterized in that the plurality of resource units indicated by the resource unit indication is a plurality of resource units corresponding to any of the following combinations: a combination of a first resource unit corresponding to the 80 MHz frequency band interval and a second resource unit and a third resource unit that are in a lower frequency 80 MHz frequency band interval and are adjacent to the first resource unit, wherein the 80 MHz frequency band interval indicated by the frequency band interval indication is adjacent to the lower frequency 80 MHz frequency band interval;a combination of a first resource unit corresponding to the 80 MHz frequency band interval and a second resource unit and a third resource unit that are in a higher frequency 80 MHz frequency band interval and are adjacent to the first resource unit, wherein the 80 MHz frequency band interval indicated by the frequency band interval indication is adjacent to the higher frequency 80 MHz frequency band interval; wherein the third resource unit is a resource unit comprising 242 subcarriers, the second resource unit is a resource unit comprising 484 subcarriers, and the first resource unit is a resource unit comprising 996 subcarriers.

10. The method according to claim 3, characterized in that the plurality of resource units indicated by the resource unit indication is a plurality of resource units corresponding to any of the following combinations: a combination of two first resource units at the lowest frequency and one first resource unit at the highest frequency in a frequency band interval of 320 MHz; a combination of one first resource unit at the lowest frequency and two first resource units at the highest frequency in a frequency band interval of 320 MHz; a combination of three first resource units at a lower frequency in a frequency band interval of 320 MHz; a combination of three first resource units at a higher frequency in a frequency band interval of 320 MHz; wherein the first resource unit is a resource unit comprising 996 subcarriers.

11. A resource allocation method, characterized in that it comprises: determining, by means of an access point, a plurality of resource units allocated to a station; and the sending, by the access point, of a firing frame to the station, wherein the firing frame comprises a user information field comprising an association identifier that is the same as an association identifier of the station, and the user information field indicates the plurality of resource units allocated to the station.

12. The method according to claim 11, characterized in that the user information field comprises a frequency band interval indication and a resource unit indication, the frequency band interval indication indicating a frequency band interval of 80 MHz in a bandwidth, and the resource unit indication indicating one or more resource units allocated to the station.

13. The method according to claim 12, characterized in that the frequency band interval indicated by the frequency band interval indication is any of the following: a primary frequency band interval of 80 MHz, a secondary frequency band interval of 80 MHz, a third frequency band interval of 80 MHz, and a fourth frequency band interval of 80 MHz.

14. The method according to claim 12, characterized in that the plurality of resource units indicated by the resource unit indication is a plurality of resource units corresponding to any of the following combinations: a combination of a fourth resource unit at a lower frequency in a 20 MHz frequency band interval within the 80 MHz frequency band interval and a fifth resource unit at the center of the 20 MHz frequency band interval; a combination of a fourth resource unit at a higher frequency in a 20 MHz frequency band interval within the 80 MHz frequency band interval and a fifth resource unit at the center of the 20 MHz frequency band interval; wherein the fifth resource unit is a resource unit comprising 26 subcarriers, and the fourth resource unit is a resource unit comprising 106 subcarriers.

15. The method according to claim 12, characterized in that the plurality of resource units indicated by the resource unit indication is a plurality of resource units corresponding to any of the following combinations: a combination of a sixth resource unit at a second lower frequency in a 20 MHz frequency band interval within the 80 MHz frequency band interval and a fifth resource unit in the 20 MHz frequency band interval, wherein the fifth resource unit is on the same side as and adjacent to the sixth resource unit; a combination of a sixth resource unit at a second lower frequency in a 20 MHz frequency band interval within the 80 MHz frequency band and a fifth resource unit in the center of the 20 MHz frequency band interval;a combination of a sixth resource unit at a second higher frequency in a 20 MHz frequency band interval within the 80 MHz frequency band and a fifth resource unit in the 20 MHz frequency band interval, wherein the fifth resource unit is on the same side as the sixth resource unit and adjacent to the sixth resource unit; a combination of a sixth resource unit at a second higher frequency in a 20 MHz frequency band interval within the 80 MHz frequency band and a fifth resource unit in the center of the 20 MHz frequency band interval; wherein the sixth resource unit is a resource unit comprising 52 subcarriers, and the fifth resource unit is a resource unit comprising 26 subcarriers.

16. The method according to claim 12, characterized in that the plurality of resource units indicated by the resource unit designation is a plurality of resource units corresponding to any of the following combinations: a combination of a second resource unit and a third resource unit in the 80 MHz frequency band range, wherein the third resource unit is adjacent to the second resource unit; a combination of a second resource unit and a third resource unit in the 80 MHz frequency band range, wherein the third resource unit is not adjacent to the second resource unit; wherein the third resource unit is a resource unit comprising 242 subcarriers, and the second resource unit is a resource unit comprising 484 subcarriers.

17. The method according to claim 12, characterized in that the plurality of resource units indicated by the resource unit indication is a plurality of resource units corresponding to any of the following combinations: a combination of a first resource unit corresponding to the 80 MHz frequency band interval and a second resource unit that is in a lower frequency 80 MHz frequency band interval and is not adjacent to the first resource unit, wherein the 80 MHz frequency band interval indicated by the frequency band interval indication is adjacent to the lower frequency 80 MHz frequency band interval;ML / t / ZUZZ / U í UO JO a combination of a first resource unit corresponding to the 80 MHz frequency band interval and a second resource unit that is in a higher frequency 80 MHz frequency band interval and is not adjacent to the first resource unit, wherein the 80 MHz frequency band interval indicated by the frequency band interval indication is adjacent to the higher frequency 80 MHz frequency band interval; wherein the first resource unit is a resource unit comprising 996 subcarriers, the second resource unit is a resource unit comprising 484 subcarriers.; 18. The method according to claim 12, characterized in that the plurality of resource units indicated by the resource unit indication is a plurality of resource units corresponding to any of the following combinations: a combination of a first resource unit corresponding to the 80 MHz frequency band interval and a second resource unit and a third resource unit that are in a lower frequency 80 MHz frequency band interval and are adjacent to the first resource unit, wherein the 80 MHz frequency band interval indicated by the frequency band interval indication is adjacent to the lower frequency 80 MHz frequency band interval;a combination of a first resource unit corresponding to the 80 MHz frequency band interval and a second resource unit and a third resource unit that are in a higher frequency 80 MHz frequency band interval and are adjacent to the first resource unit, wherein the 80 MHz frequency band interval indicated by the frequency band interval indication is adjacent to the higher frequency 80 MHz frequency band interval; wherein the third resource unit is a resource unit comprising 242 subcarriers, the second resource unit is a resource unit comprising 484 subcarriers, and the first resource unit is a resource unit comprising 996 subcarriers.

19. The method according to claim 12, characterized in that the plurality of resource units indicated by the resource unit indication is a plurality of resource units corresponding to any of the following combinations: a combination of two first resource units at a lower frequency and one first resource unit at a higher frequency in a frequency band interval of 320 MHz; a combination of one first resource unit at a lower frequency and two first resource units at a higher frequency in a frequency band interval of 320 MHz; a combination of three first resource units at a lower frequency in a frequency band interval of 320 MHz; a combination of three first resource units at a higher frequency in a frequency band interval of 320 MHz;where the first resource unit is a resource unit comprising 996 subcarriers.; 20. A communication apparatus, characterized in that it comprises a processor, a memory, and a transceiver, wherein the transceiver is configured to receive a trigger frame; the memory is configured to store program code; and the processor is configured to invoke the program code from the memory, to cause the communication apparatus to perform the method according to any one of claims 1 to 10.

21. An access point, characterized in that it comprises a processor, a memory, and a transceiver, wherein the transceiver is configured to send a trigger frame; the memory is configured to store program code; and the processor is configured to invoke the program code from the memory, to cause the access point to perform the method according to any one of claims 11 to 19.

22. A computer-readable storage medium, characterized in that the computer-readable storage medium is configured to store instructions, and when the instructions are executed by a processor, a station comprising the processor is responsible for carrying out the method according to any one of claims 1 to 10 23. A computer-readable storage medium, characterized in that the computer-readable storage medium is configured to store instructions, and when the instructions are executed by a processor, an access point comprising the processor is responsible for performing the method according to any one of claims 11 to 19.

24. A chip system, characterized in that it comprises: at least one processor; and a computer-readable storage medium, wherein the storage medium stores instructions, and wherein the instructions, when executed by at least one processor, cause a communication apparatus comprising the chip system to perform the method according to any one of claims 1 to 10.

25. A chip system, characterized in that it comprises: at least one processor; and a computer-readable storage medium, wherein the storage medium stores instructions, and wherein the instructions, when executed by at least one processor, cause an access point comprising the chip system to perform the method according to any one of claims 11 to 19.

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