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BR-122025010485-A2 - METHOD OF INDICATING CONNECTION CAPACITY, COMMUNICATION DEVICE, CHIP, CHIP SYSTEM, READABLE STORAGE MEDIUM, AND PROGRAM PRODUCT

BR122025010485A2BR 122025010485 A2BR122025010485 A2BR 122025010485A2BR-122025010485-A2

Abstract

The present invention relates to the field of wireless communications, and specifically to a method for indicating simultaneous transmission and reception (STR) capability, and a related apparatus, applicable to, for example, a wireless local area network supporting the 802.11be standard. The method comprises: a first multi-connection device (MLD) generates and sends STR capability information used to indicate interference parameter information between a first connection using a first bandwidth and a second connection using a second bandwidth; and a second device receives the STR capability information, acquires an interference parameter threshold, and determines, according to the interference parameter threshold and the interference parameter information, whether the first MLD supports STR operation on the first connection and on the second connection. Whether an MLD supports STR operation on a pair of connections (i.e., two connections) can be indicated, thus establishing a communication foundation for subsequent data communications.

Inventors

  • Yunbo Li
  • Yuchen Guo
  • Yifan Zhou
  • Guogang Huang
  • Yiqing Li
  • Ming Gan

Assignees

  • HUAWEI TECHNOLOGIES CO., LTD.

Dates

Publication Date
20260317
Application Date
20210617
Priority Date
20200617

Claims (16)

  1. 1. A method for indicating connectivity capability, characterized in that it comprises: determining, by a first multi-connection device, based on whether the first multi-connection device supports simultaneous transmission and reception (STR) operation in at least one direction from a first connection to a second connection and from the second connection to the first connection, whether the first multi-connection device supports STR operation in a pair of connections, wherein the pair of connections consists of the first connection and the second connection; sending, by the first multi-connection device, indication information to a second device, wherein the indication information indicates whether the first multi-connection device supports STR operation in the pair of connections.
  2. 2. Method, according to claim 1, characterized in that the determination, by the first multi-connection device, of whether the first multi-connection device supports STR operation on the connection pair, comprises: when the first multi-connection device does not support STR operation in at least one of the directions from the first connection to the second connection and from the second connection to the first connection, the first multi-connection device determines that the first multi-connection device does not support STR operation on the connection pair.
  3. 3. A method according to claim 2, characterized in that the first multi-connection device does not support STR operation in at least one of the directions from the first connection to the second connection and from the second connection to the first connection, comprises: the first multi-connection device does not support transmission on the first connection concurrent with reception on the second connection; or the first multi-connection device does not support transmission on the second connection concurrent with reception on the first connection; or the first multi-connection device neither supports transmission on the first connection concurrent with reception on the second connection, nor supports transmission on the second connection concurrent with reception on the first connection.
  4. 4. Method, according to claim 1, characterized in that the determination, by the first multi-connection device, of whether the first multi-connection device supports STR operation on the connection pair, comprises: when the first multi-connection device supports STR operation in both directions from the first connection to the second connection and from the second connection to the first connection, the first multi-connection device determines that the first multi-connection device supports STR operation on the connection pair.
  5. 5. A method, according to any one of claims 1 to 4, characterized in that the sending of the indication information to the second device comprises: sending, by the first multi-connection device, a connection request frame to the second device, in which the connection request frame comprises the indication information.
  6. 6. A method, according to any one of claims 1 to 5, characterized in that the indication information is 1-bit information.
  7. 7. Method according to claim 6, characterized in that when the 1-bit information is set to 1, the indication information indicates that the first multi-connection device supports STR operation in the connection pair; when the 1-bit information is set to 0, the indication information indicates that the first multi-connection device does not support STR operation in the connection pair.
  8. 8. A method according to any one of claims 1 to 7, characterized in that the first multi-connection device is a non-access point multi-connection device (non-AP MLD), and the second device is a single-connection device AP or an AP MLD; or the first multi-connection device is an AP MLD, the second device is a single-connection device station or a non-AP MLD.
  9. 9. A method according to any one of claims 1 to 8, characterized in that the first multiple-connection device comprises a plurality of affiliated stations, wherein each affiliated station operates on a connection.
  10. 10. Method according to claim 9, characterized in that the plurality of affiliated stations are independent of each other in a low media access control (MAC) layer and a physical layer, and the plurality of affiliated stations share a high MAC layer.
  11. 11. A method, according to any one of claims 1 to 10, characterized in that the operating frequency bands of the first multi-connection device comprise two or more sub-1 GHz, 2.4 GHz, 5 GHz, 6 GHz, and 60 GHz frequency bands, wherein each operating frequency band corresponds to one connection.
  12. 12. Communication apparatus, characterized in that it comprises a processor and a transceiver, wherein the transceiver is configured to send or receive signaling or a frame, and the processor is configured to execute instructions, to enable the communication apparatus to perform the method as defined in any one of claims 1 to 11.
  13. 13. A chip or chip system, characterized in that it comprises an input/output interface and a processing circuit, wherein the input/output interface is configured to exchange information or data, and the processing circuit is configured to execute instructions, to enable an apparatus fitted with the chip or chip system to perform the method as defined in any one of claims 1 to 11.
  14. 14. A readable storage medium, characterized in that the readable storage medium stores program instructions; and when the program instructions are executed, the method as defined in any one of claims 1 to 11.
  15. 15. Computer program product characterized in that it comprises instructions, wherein when the instructions are executed on a computer, the computer is enabled to perform the method as defined in any one of claims 1 to 11.
  16. 16. Chip system, characterized in that the chip system comprises a processor, configured to support an apparatus installed with the chip system in implementing the method as defined in any one of claims 1 to 11.

Description

[001] Divided from BR112022023042-7, filed on June 17, 2021. [002] This application claims priority to Chinese Patent Application Number 202010556092.7, filed with the China National Intellectual Property Administration on June 17, 2020, and entitled "METHOD FOR INDICATING STR CAPABILITY AND RELATED APPARATUS", which is incorporated herein by reference in its entirety. TECHNICAL FIELD [003] This application relates to the field of wireless communication technologies, and specifically, to a method for indicating STR capability and a related apparatus. BACKGROUND [004] An ongoing technical goal of the development and evolution of a wireless local area network (WLAN) or a cellular network is to continuously improve throughput. WLAN system protocols are primarily discussed in the standards group of the Institute of Electrical and Electronics Engineers (IEEE). In standards such as IEEE 802.11a/b/g/n/ac/ax, throughput is continuously improved. The next-generation Wi-Fi standard, IEEE 802.11be, is referred to as extremely high throughput (EHT) or Wi-Fi 7, and its most important goal is to significantly improve peak throughput. [005] Therefore, in IEEE 802.11be, peak throughput is improved by utilizing multi-link (ML) technology to achieve the technical goal of extremely high throughput. A central idea of multi-link technology is that a WLAN device supporting the next-generation IEEE 802.11 standard has multi-band transmission and reception capability, so that a larger bandwidth is used for data transmission, thereby significantly improving throughput. Multi-band includes, but is not limited to, a 2.4 GHz Wi-Fi frequency band, a 5 GHz Wi-Fi frequency band, and a 6 GHz Wi-Fi frequency band. A frequency band in which the WLAN device performs access and transmission can be referred to as a connection, and a plurality of frequency bands in which the WLAN device performs access and transmission can be referred to as a multi-link. A next-generation IEEE 802.11 standard station device that simultaneously supports a plurality of connections is referred to as a multi-link device (MLD). Clearly, the multi-link device can perform concurrent communication across multiple connections, thus greatly improving transmission rates. [006] However, when the frequency spacings between a plurality of frequency bands supported by the multi-connect device are close, sending a signal in one frequency band affects the reception of a signal in another frequency band. For this reason, the multi-connect device cannot independently perform transmit and receive operations in the plurality of frequency bands. In other words, the multi-connect device does not support simultaneous transmit and receive (STR) operation; that is, sending a signal in one frequency band by a non-simultaneous transmit and receive (non-STR) multi-connect device interferes with the reception of a signal in another frequency band by the non-STR multi-connect device. As a result, the data packets to be received cannot be correctly demodulated in the other frequency band. Figure 1 is a schematic diagram of mutual interference in a non-STR multi-connect device in a plurality of frequency bands. As shown in Figure 1, a non-STR multi-link device sends block acknowledgement BA 1 after receiving a physical layer protocol data unit (PPPDU 1) on link 1, and sends BA 2 after receiving PPDU 2 on link 2. When BA 2 overlaps PPDU 1 in time, the energy leaked during the transmission of BA 2 on link 2 to link 1 will block the reception of PPDU 1 on link 1. In this case, the PPDUs on the two links need to be aligned to avoid mutual interference between the two links. The two links can also be referred to as a link pair. Therefore, in a wireless communication process, it is necessary to know if both communication parties support STR. Thus, how to indicate an STR capability of a multi-link device on a link pair to adapt to subsequent data communication becomes a problem that urgently needs to be solved. SUMMARY [007] The embodiments of this application provide a method of indicating STR capability and a related apparatus, to indicate whether a multi-connection device supports simultaneous transmission and reception operation on a pair of connections (i.e., two connections), thereby establishing a communication foundation for subsequent data communication. [008] The following describes this request from different aspects. It should be understood that mutual reference may be made to the following implementations and beneficial effects of the different aspects. [009] According to a first aspect, an embodiment of this application provides a method for indicating STR capability, applied to a first multi-connection device. The method for indicating STR capability includes: The first multi-connection device generates and sends STR capability information, where the STR capability information is used to indicate interference parameter information between a first connection using a first bandwidth and