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KR-102963248-B1 - Resource Unit Instruction Method, Access Point, and Station

KR102963248B1KR 102963248 B1KR102963248 B1KR 102963248B1KR-102963248-B1

Abstract

The present application provides a resource unit indication method, an access point, and a station. In the resource unit indication method, a resource unit allocation subfield within a trigger frame includes a frequency band range indication and a resource unit indication. The resource unit indication is used to indicate the MRU assigned to the station. The frequency band range indication is used to indicate the frequency band range where the RU is located within the MRU. For example, the frequency band range indication is used to indicate 80 MHz where the minimum RU is located within the MRU. As such, the frequency band range indication indicates the frequency band range associated with the MRU and may additionally carry and convey more information, for example, the frequency band range where the minimum RU is located. It can be seen that the present application is applicable to 802.11ax, 802.11be, and future Wi-Fi systems. Compared to the current method where the frequency band range indication indicates only the minimum frequency band range associated with the MRU, the number of indices that must be indicated by the resource unit indication is reduced, thereby reducing the signaling overhead of the system.

Inventors

  • 후 멍시
  • 위 젠
  • 간 밍

Assignees

  • 후아웨이 테크놀러지 컴퍼니 리미티드

Dates

Publication Date
20260508
Application Date
20210903
Priority Date
20200904

Claims (20)

  1. As a method of indicating resource units, A step in which a station receives a trigger frame from an access point—the trigger frame includes a resource unit allocation subfield used to instruct the station to allocate resources, the resource unit allocation subfield includes a frequency band range instruction and a resource unit instruction, the resource unit instruction is used to indicate a multi-resource unit (MRU) allocated to the station, and the frequency band range instruction is used to indicate a frequency band range in which a minimum resource unit (RU) is located within the MRU—; and The step of the station determining the allocated MRU based on the frequency band range indication and the resource unit indication. Includes, The above MRU includes one 996-tone RU and one 484-tone RU, and the frequency band range indicated by the frequency band range indication is the frequency band range in which the 484-tone RU within the MRU is located; The above MRU includes two 996-tone RUs and one 484-tone RU, and the frequency band range indicated by the frequency band range indication is the frequency band range in which the 484-tone RU within the MRU is located; The above MRU comprises three 996-tone RUs and one 484-tone RU, and the frequency band range indicated by the frequency band range indication is the frequency band range in which the 484-tone RU within the MRU is located; The above MRU includes one 996-tone RU, one 484-tone RU, and one 242-tone RU, and the frequency band range indicated by the frequency band range indication is the frequency band range in which the 242-tone RU within the MRU is located, and The size of each 996-tone RU is 996 subcarriers, and the size of each 484-tone RU is 484 subcarriers, Resource unit instruction method.
  2. As a method of indicating resource units, Step of an access point determining a trigger frame - said trigger frame includes a resource unit allocation subfield used to instruct a station to allocate resources, said resource unit allocation subfield includes a frequency band range instruction and a resource unit instruction, said resource unit instruction is used to indicate a multiple resource unit (MRU) allocated to a corresponding station, said frequency band range instruction is used to indicate a frequency band range in which a minimum resource unit (RU) is located within the MRU indicated by said resource unit instruction -; and The step of the above access point transmitting the above trigger frame Includes, The above MRU includes one 996-tone RU and one 484-tone RU, and the frequency band range indicated by the frequency band range indication is the frequency band range in which the 484-tone RU within the MRU is located; The above MRU includes two 996-tone RUs and one 484-tone RU, and the frequency band range indicated by the frequency band range indication is the frequency band range in which the 484-tone RU within the MRU is located; The above MRU comprises three 996-tone RUs and one 484-tone RU, and the frequency band range indicated by the frequency band range indication is the frequency band range in which the 484-tone RU within the MRU is located; The above MRU includes one 996-tone RU, one 484-tone RU, and one 242-tone RU, and the frequency band range indicated by the frequency band range indication is the frequency band range in which the 242-tone RU within the MRU is located, and The size of each 996-tone RU is 996 subcarriers, and the size of each 484-tone RU is 484 subcarriers, Resource unit instruction method.
  3. In paragraph 1 or 2, A resource unit indication method used to indicate 80 MHz, where the minimum resource unit (RU) is located in the above MRU, using the above frequency band range indication.
  4. In paragraph 1 or 2, A resource unit indication method used to indicate 160 MHz, where the minimum resource unit (RU) is located in the above MRU, using the above frequency band range indication.
  5. In paragraph 4, If the MRU indicated by the above resource unit instruction is a (2*996+484)-tone RU, and the 80MHz indicated by the above frequency band range instruction is the first 80MHz or the second 80MHz at 320MHz, then the (2*996+484)-tone RU indicates that the corresponding 240MHz is the first to third 80MHz at 320MHz; A resource unit indicating method in which, if the 80 MHz indicated by the above frequency band range indication is the third 80 MHz or the fourth 80 MHz at 320 MHz, the (2*996+484)-tone RU indicates that the corresponding 240 MHz is the second 80 MHz to the fourth 80 MHz at 320 MHz.
  6. In paragraph 1 or 2, A resource unit indication method in which ascending indices of RU/MRUs of the same size correspond to the starting frequency of the said RU/MRU in ascending order.
  7. In paragraph 1 or 2, A resource unit indication method in which an ascending index of RU/MRUs of the same size corresponds in ascending order to the starting frequency of a punctured RU in the bandwidth where the RU/MRU is located.
  8. In paragraph 1 or 2, A resource unit indication method in which the resource unit allocation subfield comprises 9 bits, the frequency band range indication comprises 2 bits, and the resource unit indication comprises 7 bits.
  9. In paragraph 1 or 2, A resource unit indication method comprising a single index, wherein the index indicates the size of the MRU, or the index indicates the size of the MRU and the relative position of the MRU.
  10. In paragraph 1 or 2, The above resource unit instruction includes an index, and the index is, Indices "94 and 95" indicating MRUs comprising one 996-tone RU and one 484-tone RU, each assigned to the aforementioned station; Index "96 to 99" indicating MRUs comprising one 996-tone RU, one 484-tone RU, and one 242-tone RU, each assigned to the aforementioned station; Indexes "100 to 103" indicating MRUs comprising two 996-tone RUs and one 484-tone RU, each assigned to the aforementioned station; Indexes "105 and 106" indicating MRUs comprising three 996-tone RUs and one 484-tone RU, each assigned to the aforementioned station A resource unit instruction method that satisfies
  11. In paragraph 1 or 2, The above resource unit instruction includes an index, and the MRU indicated by the above resource unit instruction corresponds to one or more indices, and the correspondence relationship between the quantity of the MRU and the index is, A relationship in which an MRU containing one 996-tone RU and one 484-tone RU corresponds to two indices; A relationship in which an MRU containing two 996-tone RUs and one 484-tone RU corresponds to four indices; A relationship in which an MRU containing three 996-tone RUs and one 484-tone RU corresponds to two indices; A relationship in which an MRU containing one 996-tone RU, one 484-tone RU, and one 242-tone RU corresponds to four indices One or more resource unit instruction methods.
  12. In paragraph 1 or 2, A resource unit indication method in which the above frequency band range indication and the above resource unit indication are used to indicate the size and location of the above MRU.
  13. A communication device comprising a processing module and a communication module, The above processing module is configured to perform a processing operation in the method according to claim 1 or 2, and The above communication module is configured to perform a communication operation in the method according to claim 1 or 2, Communication device.
  14. As a computer-readable storage medium configured to store instructions, When the above command is executed, the method according to claim 1 or 2 is implemented, Computer-readable storage medium.
  15. A chip comprising one or more processors and interfaces, The above interface is configured to acquire a computer program, and The above processor is configured to call the computer program to perform the method according to claim 1 or 2, chip.
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Description

Resource Unit Instruction Method, Access Point, and Station The present application claims priority to Chinese patent application No. 202010923701.8, titled "RESOURCE UNIT INDICATION METHOD, ACCESS POINT, AND STATION," filed with the Chinese Intellectual Property Office on September 4, 2020, and to Chinese patent application No. 202011395419.3, titled "RESOURCE UNIT INDICATION METHOD, ACCESS POINT, AND STATION," filed with the Chinese Intellectual Property Office on December 2, 2020, and to Chinese patent application No. 202110009966.1, titled "RESOURCE UNIT INDICATION METHOD, ACCESS POINT, AND STATION," filed with the Chinese Intellectual Property Office on January 5, 2021, the entire contents of which are incorporated by reference into the present application. This application relates to the field of communication technology, and in particular to a resource unit indication method, an access point, and a station. In conventional Wireless Local Area Networks (WLANs), when uplink data transmission is required, non-access point stations (non-AP STAs) occupy the entire channel for data transmission through competition, which significantly reduces frequency utilization efficiency. To improve this situation, the wireless channel is divided into multiple subchannels (subcarriers) in the frequency domain to form a single resource unit (RU), and user data is transmitted by carrying it on a portion of the resource unit without occupying the entire channel. In this way, multiple users can transmit in parallel during their respective periods, and since there is no need for queuing or competition with each other, frequency utilization efficiency can be improved. In the downlink, an access point (AP) can determine RU allocation based on the priority of downlink data from each non-access point station. However, in the uplink, the AP must notify the terminal device of the allocated resource unit using a trigger frame. The trigger frame contains multiple user information fields. Each user information field contains information that a single station must read. For example, M user information fields represent information that non-access point station 1 through non-access point station M must each read. The resource unit allocation subfield within the user information field is used to indicate the resource unit allocated to the non-access point station. The non-access point station can then transmit data packets from the allocated resource unit. However, some non-access point stations must transmit a relatively large amount of data and be allocated a relatively large amount of resource units. Therefore, a method for allocating multiple resource units to corresponding non-access point stations using the resource unit allocation subfield is a problem that needs to be urgently solved. Embodiments of the present application provide a resource unit indication method, an access point, and a station for allocating a plurality of resource units to a corresponding non-access point station. According to a first aspect, the present application provides a resource unit indication method. In the resource unit indication method, a station receives a trigger frame from an access point—the trigger frame includes a resource unit allocation subfield used to indicate that a resource be allocated to the station, the resource unit allocation subfield includes a frequency band range indication and a resource unit indication, the resource unit indication is used to indicate a multi-resource unit (MRU) to be allocated to the station, and the frequency band range indication is used to indicate a frequency band range in which a minimum resource unit (RU) is located in the MRU—; then the station can determine the allocated MRU based on the frequency band range indication and the resource unit indication. In this method, since the MRU can be assigned to a station, it can be seen that the MRU is assigned more flexibly, which helps improve frequency band utilization. Additionally, the frequency band range indicated by the frequency band range indication is the frequency band range where the minimum RU is located in the MRU. Compared to the case where the frequency band range indication indicates only the lowest frequency band range associated with the MRU, the frequency band range indication in this application conveys more information, which helps reduce the number of indices required for resource unit indication to indicate each MRU. In one implementation, in the resource unit indication method, the frequency band range indication is used to indicate 80 MHz, where the minimum RU is located in the MRU. In other words, the granularity of the frequency band range indicated by the frequency band range indication, where the minimum RU is located in the MRU, is 80 MHz. In this implementation, the location of the minimum RU in the MRU at 80 MHz can be determined from the frequency band range indication. In this way, the resource unit indication can indicate th