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JP-2026076315-A - Communication methods and equipment

JP2026076315AJP 2026076315 AJP2026076315 AJP 2026076315AJP-2026076315-A

Abstract

[Problem] To provide a communication method and device for receiving groupcast frames in a wider range of scenes. [Solution] The communication method includes the step of a first multilink device (MLD) performing a listening operation via an awake-state auxiliary station operating on an extended multilink single radio EMLSR link. The listening operation includes a first listening operation and a second listening operation, under which the auxiliary station of the first MLD receives a groupcast frame, and under which the auxiliary station of the first MLD performs a free channel evaluation (CCA) and receives an initial control frame of a frame exchange sequence transmitted by an access point (AP) MLD. [Selection Diagram] Figure 3

Inventors

  • ルー、リウミン
  • ホアン、レイ
  • シュイ、イェンチャオ

Assignees

  • オッポ広東移動通信有限公司

Dates

Publication Date
20260511
Application Date
20260213

Claims (11)

  1. A first multilink device MLD performs a listening operation via an awake auxiliary station operating on an extended multilink single radio EMLSR link, the listening operation comprising a first listening operation and a second listening operation, the first listening operation including receiving a groupcast frame by the auxiliary station of the first MLD, and the second listening operation including performing an empty channel evaluation CCA and receiving an initial control frame of a frame exchange sequence transmitted by an access point AP MLD. Communication method.
  2. Under the first listening operation, the attached station of the first MLD receives the groupcast frame using the first receiving capability, The first receiving capability is greater than or equal to the second receiving capability, and the second receiving capability is the receiving capability used by the attached station when the first MLD performs the second listening operation. The method according to claim 1.
  3. The attached station of the first MLD performs a first listening operation based on the first information. The method according to claim 1.
  4. The first information is used by the attached station of the first MLD to perform the first listening operation at or before the target time. The method according to claim 3.
  5. The aforementioned target time includes a first time point, and the aforementioned first time point is The expected time of sending the groupcast frame, The predicted delivery traffic instruction map DTIM beacon frame target beacon transmission time TBTT, The broadcast target awake time TWT service period SP start time is expected to send the groupcast frame, TBTT of a non-space-time block code non-STBC DTIM beacon frame where the current count value of the FMS counter domain of a specific flexible groupcast service FMS stream is zero, The start time of the Groupcast GCR service period with retries, which sends the expected Groupcast frame, and at least one of the following: The method according to claim 4.
  6. The first time point is one that has been previously received by the first MLD. The method according to claim 5.
  7. The first information is determined based on a first instruction, which is used to indicate whether or not to perform the first listening operation when it is necessary to receive a groupcast frame. The method according to claim 3.
  8. The first receiving capability includes at least one of a first rate, a first modulation and coding scheme MCS, a first spatial stream SS, and a first bandwidth BW. and/or, The second receiving capability includes at least one of a second rate, a second modulation and coding policy MCS, a second spatial stream SS, and a second bandwidth BW, wherein the second receiving capability is the receiving capability of the attached station under the second listening operation. The first rate is equal to or greater than the second rate, the first MCS is better than or equal to the second MCS, the first SS is equal to or greater than the second SS, and the first BW is equal to or greater than the second BW. The method according to claim 1.
  9. The aforementioned auxiliary station is a station on the first MLD corresponding to the first link, the auxiliary station is used to listen to the first link, and the first link is the link that transmits the groupcast frame. The first MLD is an MLD that operates in EMLSR mode, and the first link is a link within the EMLSR link. The first MLD described above is a non-access point (non-AP) MLD. The method according to claim 1.
  10. If the first MLD performing the first listening operation means the first MLD maintaining and performing the first listening operation, then the first listening operation further involves a second station being used to listen to a second link in the EMLSR link, the second station being a station on the first MLD, and the second link being a link in the EMLSR link other than the first link. or If the first MLD performing the first listening operation means the first MLD switching from the second listening operation to the first listening operation, then the first listening operation prevents the second station from listening. The method according to claim 9.
  11. The first multilink device, A processor and memory are included, the memory being used to store computer programs, and the processor is used to cause the first multilink device to perform the method according to any one of claims 1 to 10 by calling and executing the computer programs stored in the memory. The first multilink device.

Description

This application is a divisional application of application number 2024-563990, filed on October 29, 2024, with the title of the invention being "Communication Method and Apparatus." This disclosure relates to the field of communications, and more particularly to communication methods and equipment. Currently, related protocols define multi-link devices (MLDs), such as non-access point (non-AP) MLDs on EMLSR links, but existing listening operations are limited to frame reception capabilities and may fail to receive frames properly in certain specific scenarios. This is a schematic diagram of an application scenario relating to the embodiment of the present invention.This is a schematic diagram of a frame exchange triggered by a MU-RTS trigger frame in EMLSR mode.This is an example of a frame exchange triggered by a BSR trigger frame in EMLSR mode.This is a schematic flowchart of a communication method 300 according to one embodiment of the present invention.This is a schematic flowchart of a communication method 400 according to another embodiment of the present invention.This is a schematic block diagram of a first multilink device 500 according to one embodiment of the present invention.This is a schematic block diagram of a second multilink device 600 according to one embodiment of the present invention.This is a schematic diagram of the implementation flow in one specific example of a communication method according to an embodiment of the present invention.This is a schematic diagram of the implementation flow in one specific example of the communication method according to an embodiment of the present invention.This is a schematic diagram of the implementation flow in one specific example of the communication method according to an embodiment of the present invention.This is diagram 4 of the implementation flow in one specific example of the communication method according to an embodiment of the present invention.This is diagram 5 of the implementation flow in one specific example of the communication method according to an embodiment of the present invention.This is a schematic diagram of the implementation flow in one specific example of the communication method according to an embodiment of the present invention.This is a schematic block diagram of a communication device according to an embodiment of the present invention.This is a schematic block diagram of a chip according to an embodiment of the present invention.This is a schematic block diagram of a communication system according to an embodiment of the present invention. The technical solution in the embodiment of this application will be described below with reference to the drawings of the embodiment. The technical solutions of the embodiments of the present invention may be applied to various communication systems, such as wireless local area networks (WLANs), wireless fidelity (Wi-Fi®), or other communication systems. As an example, a communication system 100 to which an embodiment of the present invention is applied is shown in Figure 1. This communication system 100 may include an access point (AP) 110 and a station (STA) 120 that accesses the network via the access point 110. In some scenes, AP or AP STA is used; in other words, AP is also STA in a sense. In some contexts, STA is also referred to as non-AP STA. The communication in the communication system 100 may be communication between an AP and a non-AP STA, communication between two non-AP STAs, or communication between an STA and a peer STA. Here, peer STA refers to a device that communicates with the other party of an STA; for example, peer STA may be an AP or a non-AP STA. An AP (Access Point) acts as a bridge connecting wired and wireless networks, primarily connecting each wireless network client before enabling access to the Ethernet network. An AP device may be a terminal device (e.g., a mobile phone) or a network device (e.g., a router). Such terminal or network devices have a chip that implements communication functions, such as a WLAN or Wi-Fi chip. It is understood that the role of the STA (Access Point) is not absolute in communication systems. For example, in some scenarios, when a mobile phone is connected to a router, the mobile phone is a non-AP (Access Point) STA, and when the mobile phone is functioning as a hotspot for other mobile phones, the mobile phone is acting as an AP. APs and non-AP STAs may be devices applied to car networks, such as IoT nodes and sensors in the Internet of Things (IoT), smart cameras, smart remotes, smart meters, and electric meters in smart homes, or sensors in smart cities. In some embodiments, the non-AP STA may support the 802.11be protocol. The non-AP STA may also support current and future 802.11 family wireless local area network (WLAN) protocols such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a. In some embodiments, the AP may be a device supporting the 802.11 be protocol. The AP may also be a WLAN-based device