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BR-122025010518-A2 - Resource Allocation Signaling in a Wireless Local Area Network Preamble

BR122025010518A2BR 122025010518 A2BR122025010518 A2BR 122025010518A2BR-122025010518-A2

Abstract

A device for wireless communication, comprising: a memory that stores instructions; and a processor coupled to the memory, wherein the processor and the memory are configured to: generate a signaling field, SIG, in a wireless local area network, WLAN, the SIG comprising a resource unit allocation field, RU, indicating a size and location of each RU in a frequency resource, the SIG further comprising one or more user fields, each user field comprising station information, STA, scaled; wherein an MRU comprising multiple RUs is permitted to be assigned to an STA; and transmit the SIG.

Inventors

  • Oded Redlich
  • GENADIY TSODIK
  • Shimon Shilo
  • Mengshi HU
  • Jian Yu

Assignees

  • HUAWEI TECHNOLOGIES CO., LTD.

Dates

Publication Date
20260317
Application Date
20200110

Claims (13)

  1. 1. Wireless communication device, CHARACTERIZED in that it comprises: a memory that stores instructions; and a processor coupled to the memory, wherein the processor and memory are configured to: receive a signaling field, SIG, in a wireless local area network, WLAN, the SIG comprising a resource unit allocation field, RU, indicating the size and location of an RU or MRU in a frequency resource, and one or more user fields, each of which comprises a station identifier, STA ID, of a scaled station, STA; wherein the MRU comprising multiple RUs is permitted to be assigned to one or more STAs, and the RU allocation field indicates the size and location of each RU comprised in the MRU; wherein the user fields comprise a single RU user field and an MRU user field; the single RU user field corresponds to an RU that is not an MRU; The MRU user field corresponds to an MRU; process the GIS.
  2. 2. Apparatus, according to claim 1, CHARACTERIZED in that the MRU is a small MRU comprising a combination of 26-RU, 52-RU, or 106-RU in a frequency segment of 20 MHz; or, the MRU is a large MRU comprising a combination of 242-RU, 484-RU, or 996-RU in a transmission bandwidth.
  3. 3. Apparatus, according to claim 1 or 2, CHARACTERIZED in that a common GIS field comprises information for small MRU allocated in a corresponding 20 MHz frequency segment; and/or information for a number of a large MRU allocated in a transmission bandwidth.
  4. 4. Apparatus, according to claim 1 or 2, CHARACTERIZED in that the SIG comprises a common MRU field indicating which 26-RUs are included in an MRU in a corresponding 20 MHz frequency segment; and/or indicating which 242-RUs are included in an MRU in a transmission bandwidth.
  5. 5. Apparatus, according to claim 1 or 2, CHARACTERIZED in that the GIS comprises one or more common MRU fields, each common MRU field indicating which actual allocated RUs are in an MRU.
  6. 6. Apparatus, according to claim 1 or 2, CHARACTERIZED in that the GIS comprises punching information, indicating a large non-contiguous RU and one or more user fields corresponding to the large non-contiguous RU, each of the one or more user fields comprising different station information.
  7. 7. Method for wireless communication, CHARACTERIZED in that it comprises: receiving a signaling field, SIG, in a wireless local area network, WLAN, the SIG comprising a resource unit allocation field, RU, indicating a size and location of an RU or MRU in a frequency resource, and one or more user fields, each of which comprises a station identifier, STA ID, of a scaled station, STA; wherein the MRU comprising multiple RUs is permitted to be assigned to one or more STAs, and the RU allocation field indicates the size and location of each RU comprised in the MRU; wherein the user fields comprise a single RU user field and an MRU user field; the single RU user field corresponds to an RU that is not an MRU; the MRU user field corresponds to an MRU; processing the SIG.
  8. 8. Method, according to claim 7, CHARACTERIZED in that the MRU is a small MRU comprising a combination of 26-RU, 52-RU, or 106-RU in a 20 MHz frequency segment; or, the MRU is a large MRU comprising a combination of 242-RU, 484-RU, or 996-RU in a transmission bandwidth.
  9. 9. Method, according to claim 7 or 8, CHARACTERIZED in that a common GIS field comprises information for small MRU allocated in a corresponding 20 MHz frequency segment; and/or, information for a number of a large MRU allocated in a transmission bandwidth.
  10. 10. Method, according to claim 7 or 8, CHARACTERIZED in that the SIG comprises a common MRU field indicating which 26-RUs are included in an MRU in a corresponding 20 MHz frequency segment; and/or indicating which 242-RUs are included in an MRU in a transmission bandwidth.
  11. 11. Method, according to claim 7 or 8, CHARACTERIZED in that the GIS comprises one or more common MRU fields, each common MRU field indicating which actual allocated RUs are in an MRU.
  12. 12. Method, according to claim 7 or 8, CHARACTERIZED in that the GIS comprises punch information, indicating a large non-contiguous RU and one or more user fields corresponding to the large non-contiguous RU, each of the one or more user fields comprising different station information.
  13. 13. Non-transient computer-readable storage media, CHARACTERIZED in that it comprises instructions which, when executed by a computer unit, cause the steps of the method as defined in any one of claims 7 to 12 to be performed.

Description

FIELD OF THE INVENTION [0001] The present invention relates to wireless communication and, more particularly, to a new method of resource allocation signaling in a WLAN and device. FUNDAMENTALS OF THE INVENTION [0002] In the IEEE 802.11ax standard, OFDMA modulation was introduced for the first time. The description of which RUs are used for a given PPDU is provided in its SIG-B field (and defined in detail in the 802.11ax standard, illustrated in Figure 1). This field is composed of 2 main subfields: the common field and the user-specific field as described in the 802.11ax standard. [0003] The 802.11ax standard limits each non-AP STA to using a single resource unit (RU) that is composed of contiguous tones (subcarriers). Although there are several RU sizes defined in the standard (e.g., 26, 52, 106, 242, 484, 996 tones), restricting allocation to a single RU limits channel resource usage. [0004] As mentioned above, in the current 802.11ax standard (i.e., the previous technique) there are 6 RU sizes. In the allocation process, the scheduler can only allocate a single RU to a given STA in a MU-PPDU (Multi-User Phy Protocol Data Unit - the transmitted packet) or SU-PPDU (Single User PPDU) transmission. [0005] If there is an unallocated RU, it cannot be assigned to a STA that has already received an RU. SUMMARY OF THE INVENTION [0006] The present invention is intended to expand and improve the method of utilizing channel resources in WLAN. [0007] Methods, devices and computer-readable media for resource allocation signaling in an extremely high throughput wireless local area network (WLAN) are disclosed. [0008] Devices such as an access point (AP) can generate a signaling field, SIG. The SIG comprises a resource unit (RU) allocation field, indicating the size and location of each RU in a frequency resource. The SIG further comprises one or more user fields, each user field comprising station information, STA, scaled; wherein a MRU comprising multiple RUs (MRU) is permitted to be assigned to one or more STAs (same). The RU comprises an RU defined in 802.11ax. The MRU can be a small MRU comprising the combination of 26-RU, 52-RU or 106-RU in a 20 MHz frequency segment; or a large MRU comprising a combination of 242-RU, 484-RU or 996-RU in the transmission bandwidth. [0009] In some examples, the MRU comprises a first RU and a second RU. The device may generate a first user field corresponding to the first RU and a second user field corresponding to the second RU. Both the first user field and the second user field comprise the same STA ID. The second user field may additionally include one or any combination of the following: the number of RUs assigned to the STA; or the size and location of each RU in the MRU assigned to the STA. [0010] Alternatively, the device may generate a common GIS field comprising information for small MRU allocated in a corresponding 20 MHz frequency segment; and/or information for a large MRU number allocated in the transmission bandwidth. [0011] Alternatively, the device may generate a single RU user field and an MRU user field. The single RU user field corresponds to a RU that is not an MRU. The MRU user field corresponds to an MRU comprising at least the following: an STA_ID, an RU bitmap indicating the size and location of each RU comprised within the MRU. [0012] Alternatively, the device can generate a common MRU field indicating which 26-RUs are included in an MRU in a corresponding 20 MHz frequency segment; and/or a common MRU field indicating which 242-RUs are included in an MRU in a transmission bandwidth. [0013] Alternatively, the device can generate one or more common MRU fields, each common MRU field indicating whether an allocated real RU is in an MRU (which allocated real RUs are in an MRU). [0014] In addition, other information, such as channel puncture information in a U-SIG, may be used to indicate MRU allocation. The puncture information indicates a large non-contiguous RU and one or more user fields corresponding to the large non-contiguous RU, where each of the one or more user fields comprises information from a different station. [0015] One or more stations (e.g., mobile or wireless devices) may receive the WLAN preamble, including the SIG. The one or more stations may then determine an MRU comprising multiple RUs assigned to the STA based on the SIG. The stations may then determine an MRU assigned to the STA by: a first user field corresponding to the first RU and a second user field corresponding to the second RU; both the first user field and the second user field comprising the same STA ID; the second user field may additionally include one or any combination of the following: the number of RUs assigned to the STA; or, the size and location of each RU in the MRU assigned to the STA; or a common SIG field comprising information for small MRU allocated in a corresponding 20 MHz frequency segment; and/or information for a large MRU number allocated in the transmiss