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WO2024221371A1 - Procédé de transmission de service à faible latence, dispositif électronique et support de stockage - Google Patents

Procédé de transmission de service à faible latence, dispositif électronique et support de stockage Download PDF

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Publication number
WO2024221371A1
WO2024221371A1 PCT/CN2023/091394 CN2023091394W WO2024221371A1 WO 2024221371 A1 WO2024221371 A1 WO 2024221371A1 CN 2023091394 W CN2023091394 W CN 2023091394W WO 2024221371 A1 WO2024221371 A1 WO 2024221371A1
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WIPO (PCT)
Prior art keywords
tdls
tid
low
link
service
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PCT/CN2023/091394
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English (en)
Chinese (zh)
Inventor
程亚军
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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Priority to PCT/CN2023/091394 priority Critical patent/WO2024221371A1/fr
Priority to CN202380009182.6A priority patent/CN116830720A/zh
Publication of WO2024221371A1 publication Critical patent/WO2024221371A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • H04W72/512—Allocation or scheduling criteria for wireless resources based on terminal or device properties for low-latency requirements, e.g. URLLC

Definitions

  • the embodiments of the present disclosure relate to the field of mobile communication technology. Specifically, the embodiments of the present disclosure relate to a low-latency service transmission method, an electronic device, and a storage medium.
  • Peer to Peer (P2P) communication mode does not require data transmission through access points, avoiding delays caused by network congestion and further improving transmission efficiency.
  • WLAN also proposes a restricted target wake-up time (R-TWT).
  • R-TWT restricted target wake-up time
  • the embodiments of the present disclosure provide a low-latency service transmission method, an electronic device, and a storage medium to further reduce the transmission delay during the low-latency service data transmission process.
  • an embodiment of the present disclosure provides a low-latency service transmission method, which is applied to an access point device AP, and the method includes:
  • the first radio frame includes first identification information, and the first identification information identifies the time slot of the TXOP allocated by the AP to the first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the second service identifier of the second low-latency service mapped between the AP and the member scheduled by the first R-TWT includes the first service identifier of the first low-latency service
  • the first radio frame is sent.
  • the embodiment of the present disclosure further provides a low-latency service transmission method, which is applied to a first TDLS device, and the method includes:
  • the first radio frame includes first identification information, and the first identification information identifies that the access point device AP allocates a TXOP time slot to the first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the second service identifier of the second low-latency service mapped between the AP and the members scheduled by the first R-TWT includes the first service identifier of the first low-latency service.
  • an embodiment of the present disclosure further provides an electronic device, wherein the electronic device is an access point device AP, and the electronic device includes:
  • a determination module configured to determine a first radio frame; wherein the first radio frame includes first identification information, and the first identification information identifies a time slot of a TXOP allocated by the AP to a first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the second service identifier of the second low-latency service mapped between the AP and the member scheduled by the first R-TWT includes the first service identifier of the first low-latency service
  • a sending module is used to send the first wireless frame.
  • an embodiment of the present disclosure further provides an electronic device, wherein the electronic device is a first TDLS device, and the electronic device includes:
  • a receiving module configured to receive a first wireless frame
  • the first wireless frame includes first identification information, and the first identification information identifies that the access point device AP allocates a TXOP time slot to the first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the second service identifier of the second low-latency service mapped between the AP and the members scheduled by the first R-TWT includes the first service identifier of the first low-latency service.
  • the embodiments of the present disclosure also provide an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, one or more methods described in the embodiments of the present disclosure are implemented.
  • the embodiments of the present disclosure further provide a computer-readable storage medium, on which a computer program is stored.
  • a computer program is stored.
  • the computer program is executed by a processor, one or more of the methods described in the embodiments of the present disclosure are implemented.
  • FIG1 is an interactive schematic diagram of a low-latency service transmission method provided by an embodiment of the present disclosure
  • FIG2 is a flowchart of a low-latency service transmission method provided by an embodiment of the present disclosure
  • FIG3 is a second flowchart of the low-latency service transmission method provided by an embodiment of the present disclosure.
  • FIG4 is a third flowchart of the low-latency service transmission method provided by an embodiment of the present disclosure.
  • FIG5 is a schematic diagram of a structure of an electronic device provided by an embodiment of the present disclosure.
  • FIG6 is a second structural diagram of an electronic device provided in an embodiment of the present disclosure.
  • FIG7 is a third structural diagram of an electronic device provided in an embodiment of the present disclosure.
  • FIG. 8 is a fourth schematic diagram of the structure of the electronic device provided in an embodiment of the present disclosure.
  • first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
  • first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information.
  • word “if” used herein may be interpreted as "at the time of” or "when” or "in response to determining”.
  • the present disclosure provides a low-latency service transmission method, an electronic device, and a storage medium. Used to provide a low-latency service data transmission method.
  • the method and the device are based on the same application concept. Since the method and the device solve the problem in a similar principle, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.
  • AP Access Point
  • STA1 first TDLS (Tunneled Direct Link Setup) device
  • STA2 second TDLS device
  • BSS Basic Service Sets
  • STA1 and STA2 are peer devices, and all operations of STA1 in this embodiment can also be performed by STA2 in a peer manner.
  • STA1 and STA2 may be collectively referred to as STA, wherein STA may also be a non-AP MLD device.
  • the R-TWT planning device (such as AP, or Scheduling AP) and the planned device (such as STA, or Scheduled STA) can pre-establish R-TWT scheduling (R-TWT schedule).
  • R-TWT schedule R-TWT schedule
  • STA negotiates with AP and becomes a member of a R-TWT scheduling
  • AP and STA only transmit the uplink and downlink corresponding low-latency services of the R-TWT scheduling identifier during the corresponding R-TWT service phase, and other communication services are suspended or postponed during this phase.
  • the low-latency service transmission method of the embodiment of the present disclosure is not limited to the TDLS site devices being all members of the R-TWT scheduling, which further improves the flexibility and transmission efficiency of low-latency service transmission.
  • the interaction process shown in FIG. 1 includes a step of low-latency service transmission between TDLS devices and a negotiation step of TDLS link service identifier to connection mapping before low-latency service transmission; specifically, the processing steps shown in FIG. 1 may include:
  • Step 1 STA1 and STA2 successfully establish a TDLS link through TDLS discovery, establishment, confirmation and other processes.
  • STA1 can act as TDLS STA1 (i.e., TDLS initiator or responder); correspondingly, STA2 can act as TDLS STA2 (i.e., TDLS responder or initiator).
  • Step 2-1 AP receives a TID-To-Link Mapping Request frame sent by STA1.
  • the TID-To-Link Mapping Request frame carries a TID-To-Link Mapping element;
  • the TID-To-Link Mapping element may include a TDLS link service identifier mapping (TDLS TID Mapping) flag, and the TDLS TID Mapping flag is used to identify whether the parameter information carried by the TID-To-Link Mapping element is used for service identifier mapping on the TDLS link between TDLS devices.
  • TDLS TID Mapping TDLS link service identifier mapping
  • TID-To-Link Mapping element As an example, the format of the TID-To-Link Mapping element is shown in Table 1 below:
  • the TDLS TID Mapping flag when the TDLS TID Mapping flag is set to 1, it can indicate that the parameter information carried by the TID-To-Link Mapping element is used for service identifier mapping on the TDLS link between TDLS devices; when the TDLS TID Mapping flag is set to 0, it can indicate that the parameter information carried by the TID-To-Link Mapping element is not used for service identifier mapping on the TDLS link between TDLS devices.
  • the TID-To-Link Mapping element includes a Direction flag; when the Direction flag is set to a first parameter value, it indicates that the service identifier to connection mapping relationship included in the TID-To-Link Mapping element is TDLS link peer-to-peer transmission.
  • the first parameter value may be 3.
  • the TID-To-Link Mapping element when the parameter information carried by the TID-To-Link Mapping element is used for service identification mapping on the TDLS link between TDLS devices (i.e., the TDLS TID Mapping flag is set to 1), and the Direction flag is set to 3, it can be marked
  • the service identifier-to-connection mapping relationship included in the TID-To-Link Mapping element is identified as TDLS link peer-to-peer transmission, that is, the service transmission mapped on the TDLS link is bidirectional peer-to-peer of TDLS devices.
  • Step 2-2 AP forwards the TID-To-Link Mapping Request frame to STA2. It can be understood that in the embodiment of the present disclosure, the TID-To-Link Mapping Request frame is forwarded by AP to STA2.
  • Step 2-3 AP receives the service identifier to connection mapping response (TID-To-Link Mapping Response) frame sent by STA2; the TID-To-Link Mapping Response frame carries the TID-To-Link Mapping element.
  • connection mapping response TID-To-Link Mapping Response
  • Step 2-4 AP forwards the TID-To-Link Mapping Response frame to STA1. It can be understood that in the embodiment of the present disclosure, the TID-To-Link Mapping Response frame is forwarded by AP to STA1.
  • Step 3-1 When the target wake-up time of a certain R-TWT schedule joined by STA1 is reached, the AP sends a trigger frame (for example, a basic trigger frame Basic Trigger frame) to STA1 to wake up STA1 so as to exchange data with STA1 within the R-TWT SP.
  • a trigger frame for example, a basic trigger frame Basic Trigger frame
  • Step 3-2 According to the low-latency communication service identifier mapped on the link, the AP exchanges data with STA1.
  • the exchanged data may be an independent data frame or a plurality of continuous data frames (ie, data blocks).
  • the second low-latency services mapped between the AP and the members of the R-TWT schedule include service 1, service 3, service 5 and service 6, that is, in the corresponding R-TWT SP, the transmission between the AP and STA1 is identified as the second low-latency service, and other services are suspended or postponed in the SP; accordingly, the second service identifier includes identifier 1, identifier 3, identifier 5 and identifier 6 corresponding to the above services respectively.
  • the first low-latency service mapped by the TDLS link between TDLS devices includes one or more service types of service 1, service 3, service 5 and service 6 (for example, the first service class includes service 0, service 1, service 4 and service 6, that is, the first service identifier includes identifier 0, identifier 1, identifier 4 and identifier 6 corresponding to the above services respectively).
  • the low-latency services of the second service identifier include the first service identifier (identifier 1 and identifier 6).
  • Step 5-1 When the AP determines that the service identifier in the R-TWT scheduling includes the service identifier on the TDLS link, it sends a MU-RTS TXS Trigger frame (multi-user request to send transmission opportunity sharing trigger frame, i.e., the first wireless frame) to STA1, and allocates a TXOP time slot to STA1 in the R-TWT SP through the transmission opportunity sharing (TXOP) method.
  • TXOP time slot is used for STA1 and STA2 to transmit the first low-latency service through the TDLS link.
  • the MU-RTS TXS Trigger frame is not sent.
  • Step 6 In the allocated TXOP time slot, STA1 and STA2 perform peer-to-peer (P2P) transmission through the TDLS link, that is, STA1 sends data to STA2.
  • P2P peer-to-peer
  • STA1 and STA2 are peer devices.
  • STA1 when STA1 is the initiator, STA2 is the responder; when STA2 is the initiator, STA1 is the Is the responder.
  • STA1 sending data to STA2 as an example (STA1 is the initiator and STA2 is the responder), and the method is also applicable to STA2 sending data to STA1 (STA2 is the initiator and STA1 is the responder).
  • the AP can also exchange data with STA2.
  • the AP may also send a MU-RTS TXS Trigger frame to STA2 when it determines that the service identifier in the R-TWT scheduling includes the service identifier on the TDLS link; in step 5-2, STA2 may send a CTS frame to the AP; in step 6, STA2 and STA1 perform point-to-point (Peer to Peer, referred to as P2P) transmission, that is, STA2 sends data to STA1.
  • P2P point-to-point
  • the AP allocates the time slot of the TXOP to the first TDLS device through the first identification information identification AP; for R-TWT scheduling that can be applied between STA devices, the first TDLS device and the second TDLS device can transmit low-latency service data within the time slot of the TXOP through the TDLS link established between the two without the participation of the AP, thereby further reducing the transmission delay in the process of low-latency service data transmission and improving the low-latency service transmission efficiency.
  • an embodiment of the present disclosure provides a low-latency service transmission method, and optionally, the method can be applied to an access point (AP) device;
  • AP access point
  • an AP is, for example, a device having a wireless to wired bridging function, and the AP is responsible for extending the services provided by the wired network to the wireless network;
  • a station device is, for example, an electronic device having a wireless network access function, and provides a frame delivery service to enable information to be transmitted.
  • an AP and a STA can be devices that support multiple connections, for example, they can be represented as an AP MLD and a non-AP MLD, respectively; an AP MLD can represent an access point that supports multiple connection communication functions, and a non-AP MLD can represent a station that supports multiple connection communication functions.
  • the method may include the following steps:
  • Step 201 determining a first radio frame; wherein the first radio frame includes first identification information, and the first identification information identifies a time slot of a TXOP allocated by the AP to a first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the second service identifier of the second low-latency service mapped between the AP and the member scheduled by the first R-TWT includes the first service identifier of the first low-latency service
  • Step 202 Send the first wireless frame.
  • TWT is a technology used for energy saving, which aims to further reduce the power consumption of Wi-Fi networks.
  • TWT technology enables STA and AP to negotiate service time to determine the time and frequency of STA sleep and wake-up; STA remains active and communicates during the service time, so that it can sleep outside the service time to achieve the purpose of energy saving.
  • TWT technology can also enable AP to provide higher quality services to multiple STAs, minimize competition or overlap, and improve spectrum efficiency while reducing Wi-Fi network power consumption.
  • real-time data traffic of more applications has strict delay requirements, for example, the average delay or maximum delay is on the order of a few milliseconds to tens of milliseconds, and the applications require real-time data traffic to have extremely small jitter and strong reliability.
  • TWT a limit on the target wake-up time is proposed.
  • the R-TWT mechanism allows the AP to use enhanced media access protection mechanisms and resource reservation mechanisms to provide more predictable delays to distinguish delay-sensitive traffic from other types of traffic, so that the AP can reduce the worst-case delay and/or reduce jitter, and provide more reliable services.
  • the R-TWT planning device e.g., AP, or Scheduling AP
  • the planned device e.g., STA, or Scheduled STA
  • the AP broadcasts the R-TWT scheduling
  • the STA negotiates with the AP and becomes a member of a certain R-TWT scheduling.
  • the AP and the STA only transmit the uplink and downlink corresponding low-latency services identified by the R-TWT scheduling during the corresponding R-TWT service phase, and other communication services are suspended or postponed during this phase.
  • R-TWT is used to serve low-latency services, such as services with an average delay of less than 10 milliseconds.
  • low-latency services such as services with an average delay of less than 10 milliseconds.
  • SP scheduled by R-TWT only services identified as low-latency services communicate, and other communication services are suspended or postponed during this phase, thereby ensuring the transmission of low-latency services.
  • a first radio frame is sent; for example, the AP may send the first radio frame within the SP scheduled by the first R-TWT.
  • the first wireless frame may include a multi-user request to send transmission opportunity sharing trigger frame MU-RTS TXS Trigger frame.
  • the first TDLS device and the second TDLS device may be two STAs, for example.
  • TDLS technology enables two STAs in the same basic service set to directly skip the AP to transmit data after establishing a TDLS connection (TDLS Link, i.e., TDLS link/TDLS channel), so that they are not constrained by the AP and use the fastest rate standard supported by the two STAs for direct transmission.
  • Direct transmission can be performed on the original link or on a new extended channel, thus avoiding data transmission delays caused by network congestion, which is of great significance for the transmission of low-latency services.
  • the first TDLS device is a member of the first R-TWT scheduling. That is to say, when the second service identifier contains the first service identifier, only one of the first TDLS device and the second TDLS device needs to be a member of the first R-TWT scheduling, and the AP can allocate the TXOP time slot to the first TDLS device for the first TDLS device and the second TDLS device to transmit the first low-latency service via the TDLS link. Therefore, the disclosed embodiment is not only limited to the TDLS site devices being members of the R-TWT scheduling, but also further improves the flexibility and transmission efficiency of low-latency service transmission.
  • the second low-latency services mapped between the AP and the members of the R-TWT schedule include service 1, service 3, service 5 and service 6, that is, in the corresponding R-TWT SP, the transmission between the AP and STA1 is identified as the second low-latency service, and other services are suspended or postponed in the SP; accordingly, the second service identifier includes identifier 1, identifier 3, identifier 5 and identifier 6 corresponding to the above services respectively.
  • the first low-latency service mapped by the TDLS link between TDLS devices includes one or more service types of service 1, service 3, service 5 and service 6 (for example, the first service class includes service 0, service 1, service 4 and service 6, that is, the first service identifier includes identifier 0, identifier 1, identifier 4 and identifier 6 corresponding to the above services respectively).
  • the low-latency services of the second service identifier include the first service identifier (identifier 1 and identifier 6).
  • the AP allocates the time slot of the TXOP to the first TDLS device through the first identification information identification AP; for R-TWT scheduling that can be applied between STA devices, the first TDLS device and the second TDLS device can transmit low-latency service data within the time slot of the TXOP through the TDLS link established between the two without the participation of the AP, thereby further reducing the transmission delay in the process of low-latency service data transmission and improving the low-latency service transmission efficiency.
  • the present disclosure provides a low-latency service transmission method, which is applied to an access point device AP.
  • the method may include the following steps:
  • the first radio frame includes first identification information, and the first identification information identifies the time slot of the TXOP allocated by the AP to the first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the second service identifier of the second low-latency service mapped between the AP and the member scheduled by the first R-TWT includes the first service identifier of the first low-latency service
  • the first radio frame is sent.
  • the method Before determining the first radio frame, the method includes:
  • the first TID-To-Link Mapping element includes a TDLS TID Mapping flag, and the TDLS TID Mapping flag indicates whether the parameter information carried by the TID-To-Link Mapping element is used for service identifier mapping on a TDLS link between TDLS devices;
  • the second radio frame is sent to the second TDLS device.
  • a negotiation step of TDLS link service identifier to connection mapping may also be included.
  • the negotiation step may include the following steps:
  • the AP may receive the second radio frame sent by the first TDLS device, and forward the second radio frame to the second TDLS device. It can be understood that in the embodiment of the present disclosure, the second radio frame is forwarded by the AP to the second TDLS device.
  • the second wireless frame may carry a first TID-To-Link Mapping element
  • the first TID-To-Link Mapping element may include a TDLS TID Mapping identification bit
  • the TDLS TID Mapping identification bit is used to identify whether the parameter information carried by the TID-To-Link Mapping element is used for service identifier mapping on the TDLS link between TDLS devices.
  • the first TID-To-Link Mapping element is a service identifier to connection mapping (TID-To-Link Mapping) element;
  • the TDLS TID Mapping identifier is a TDLS link service identifier mapping identifier (TDLS TID Mapping).
  • the format of the first TID-To-Link Mapping element is shown in Table 1 above.
  • the TDLS TID Mapping flag when the TDLS TID Mapping flag is set to 1, it can indicate that the parameter information carried by the TID-To-Link Mapping element is used for service identifier mapping on the TDLS link between TDLS devices; when the TDLS TID Mapping flag is set to 0, it can indicate that the parameter information carried by the TID-To-Link Mapping element is not used for service identifier mapping on the TDLS link between TDLS devices.
  • the second wireless frame may be a service identifier to connection mapping request (TID-To-Link Mapping Request) frame.
  • the first TID-To-Link Mapping element includes a Direction identification bit
  • the Direction identification bit is set to the first parameter value, indicating that the service identifier to connection mapping relationship included in the first TID-To-Link Mapping element is TDLS link peer transmission.
  • the first parameter value may be 3.
  • the TDLS TID Mapping identifier is set to 1
  • the Direction identifier is set to 3
  • the service identifier to connection mapping relationship included in the first TID-To-Link Mapping element is TDLS link peer transmission, that is, the service transmission mapped on the TDLS link is bidirectional peer to peer of TDLS devices.
  • the present disclosure provides a low-latency service transmission method, which is applied to an access point device AP.
  • the method may include the following steps:
  • the first radio frame includes first identification information, and the first identification information identifies the time slot of the TXOP allocated by the AP to the first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the second service identifier of the second low-latency service mapped between the AP and the member scheduled by the first R-TWT includes the first service identifier of the first low-latency service
  • the first radio frame is sent.
  • the method Before determining the first radio frame, the method includes:
  • the first TID-To-Link Mapping element includes a TDLS TID Mapping flag, and the TDLS TID Mapping flag indicates whether the parameter information carried by the TID-To-Link Mapping element is used for service identifier mapping on a TDLS link between TDLS devices;
  • the second radio frame is sent to the second TDLS device.
  • the method further includes:
  • the third radio frame includes a second TID-To-Link Mapping element
  • the third radio frame is sent to the first TDLS device.
  • a negotiation step of TDLS link service identifier to connection mapping may be included.
  • the negotiation step may include the following steps:
  • the third wireless frame carries a second TID-To-Link Mapping element;
  • the second TID-To-Link Mapping element is a service identifier to connection mapping (TID-To-Link Mapping) element.
  • the third wireless frame may be a service identifier to connection mapping response (TID-To-Link Mapping Response) frame.
  • a parameter of the TDLS TID Mapping flag of the second TID-To-Link Mapping element is the same as a parameter of the TDLS TID Mapping flag of the first TID-To-Link Mapping element;
  • the parameter of the Direction flag of the second TID-To-Link Mapping element is the same as the parameter of the Direction flag of the first TID-To-Link Mapping element.
  • the second TDLS device is identified as supporting peer-to-peer transmission of low-latency services on the TDLS link.
  • the parameters of the TDLS TID Mapping identification bit in the second wireless frame are the same as the parameters of the TDLS TID Mapping identification bit in the third wireless frame; and/or, the parameters of the Direction identification bit in the second wireless frame are the same as the parameters of the Direction identification bit in the third wireless frame; in this way, it can be identified that the second TDLS device supports peer-to-peer transmission of low-latency services on the TDLS link.
  • the first TDLS device and the second TDLS device are peer devices, for example, when the first TDLS device is the initiator, the second TDLS device is the responder; when the second TDLS device is the initiator, the first TDLS device is the responder.
  • the above embodiment is described by taking the first TDLS device sending data to the second TDLS device as an example (the first TDLS device is the initiator and the second TDLS device is the responder), and the method is also applicable to the second TDLS device sending data to the first TDLS device (the second TDLS device is the initiator and the first TDLS device is the responder).
  • the AP allocates the time slot of the TXOP to the first TDLS device through the first identification information; for R-TWT scheduling that can be applied between STA devices, the first TDLS device and the second TDLS device can transmit low-latency service data through the TDLS link established between the two in the time slot of the TXOP without the participation of the AP, thereby further reducing The transmission delay during the low-latency service data transmission process is reduced, thereby improving the transmission efficiency of the low-latency service.
  • the present disclosure provides a low-latency service transmission method, which is applied to an access point device AP.
  • the method may include the following steps:
  • the first radio frame includes first identification information, and the first identification information identifies the time slot of the TXOP allocated by the AP to the first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the second service identifier of the second low-latency service mapped between the AP and the member scheduled by the first R-TWT includes the first service identifier of the first low-latency service
  • the first radio frame is sent.
  • the method before determining the first radio frame, the method includes:
  • the first TID-To-Link Mapping element includes a TDLS TID Mapping flag, and the TDLS TID Mapping flag indicates whether the parameter information carried by the TID-To-Link Mapping element is used for service identifier mapping on a TDLS link between TDLS devices;
  • the second radio frame is sent to the second TDLS device.
  • the first TID-To-Link Mapping element includes a Direction flag
  • the Direction identification bit is set to the first parameter value, indicating that the service identifier to connection mapping relationship included in the first TID-To-Link Mapping element is TDLS link peer transmission.
  • the method further includes:
  • the third radio frame includes a second TID-To-Link Mapping element
  • the third radio frame is sent to the first TDLS device.
  • the parameter of the TDLS TID Mapping flag of the second TID-To-Link Mapping element is the same as the TDLS TID of the first TID-To-Link Mapping element.
  • the parameters of the Mapping flag are the same;
  • the parameter of the Direction flag of the second TID-To-Link Mapping element is the same as the parameter of the Direction flag of the first TID-To-Link Mapping element.
  • the second TDLS device is identified as supporting peer-to-peer transmission of low-latency services on the TDLS link.
  • the second wireless frame includes a TID-To-Link Mapping request frame
  • the third wireless frame includes a TID-To-Link Mapping response frame.
  • the first wireless frame includes a MU-RTS TXS Trigger frame.
  • the AP allocates the time slot of the TXOP to the first TDLS device through the first identification information identification AP; for R-TWT scheduling that can be applied between STA devices, the first TDLS device and the second TDLS device can transmit low-latency service data within the time slot of the TXOP through the TDLS link established between the two without the participation of the AP, thereby further reducing the transmission delay in the process of low-latency service data transmission and improving the low-latency service transmission efficiency.
  • an embodiment of the present disclosure provides a low-latency service transmission method.
  • the method is applied to a first TDLS device.
  • the method includes:
  • Step 301 Receive a first wireless frame
  • the first wireless frame includes first identification information, and the first identification information identifies that the access point device AP allocates a TXOP time slot to the first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the first service identifier of the first low-latency service includes the second service identifier of the second low-latency service mapped between the AP and the members scheduled by the first R-TWT.
  • the first wireless frame may include a multi-user request to send transmission opportunity sharing trigger frame MU-RTS TXS Trigger frame.
  • the first TDLS device and the second TDLS device can be two STAs, for example.
  • TDLS technology enables two STAs in the same basic service set to directly skip the AP to transmit data after establishing a TDLS connection (TDLS Link, i.e., TDLS link/TDLS channel), thereby being unaffected by the AP.
  • TDLS Link i.e., TDLS link/TDLS channel
  • the constraints of the two STAs are eliminated, and the fastest rate standard supported by the two STAs is used for direct transmission. Direct transmission can be carried out on the original link or switched to a new extended channel. Therefore, data transmission delays caused by network congestion can be avoided, which is of great significance for the transmission of low-latency services.
  • the first TDLS device is a member of the first R-TWT scheduling. That is to say, when the second service identifier contains the first service identifier, only one of the first TDLS device and the second TDLS device needs to be a member of the first R-TWT scheduling, and the AP can allocate the TXOP time slot to the first TDLS device for the first TDLS device and the second TDLS device to transmit the first low-latency service via the TDLS link. Therefore, the disclosed embodiment is not only limited to the TDLS site devices being members of the R-TWT scheduling, but also further improves the flexibility and transmission efficiency of low-latency service transmission.
  • the second low-latency services mapped between the AP and the members of the R-TWT schedule include service 1, service 3, service 5 and service 6, that is, in the corresponding R-TWT SP, the transmission between the AP and STA1 is identified as the second low-latency service, and other services are suspended or postponed in the SP; accordingly, the second service identifier includes identifier 1, identifier 3, identifier 5 and identifier 6 corresponding to the above services respectively.
  • the first low-latency service mapped by the TDLS link between TDLS devices includes one or more service types of service 1, service 3, service 5 and service 6 (for example, the first service class includes service 0, service 1, service 4 and service 6, that is, the first service identifier includes identifier 0, identifier 1, identifier 4 and identifier 6 corresponding to the above services respectively).
  • the low-latency services of the second service identifier include the first service identifier (identifier 1 and identifier 6).
  • the AP allocates the time slot of the TXOP to the first TDLS device through the first identification information identification AP; for R-TWT scheduling that can be applied between STA devices, the first TDLS device and the second TDLS device can transmit low-latency service data within the time slot of the TXOP through the TDLS link established between the two without the participation of the AP, thereby further reducing the transmission delay in the process of low-latency service data transmission and improving the low-latency service transmission efficiency.
  • the present disclosure provides a low-latency service transmission method.
  • the method is applied to In a first TDLS device, the method includes:
  • the first radio frame includes first identification information, and the first identification information identifies that the access point device AP allocates a TXOP time slot to the first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the first service identifier of the first low-latency service includes the second service identifier of the second low-latency service mapped between the AP and the members scheduled by the first R-TWT.
  • the method Before receiving the first radio frame, the method includes:
  • the first TID-To-Link Mapping element includes a TDLS TID Mapping flag, and the TDLS TID Mapping flag indicates whether the parameter information carried by the TID-To-Link Mapping element is used for service identifier mapping on a TDLS link between TDLS devices;
  • the second radio frame is sent.
  • a negotiation step of TDLS link service identifier to connection mapping may also be included.
  • the negotiation step may include the following steps:
  • the first TDLS device determines and sends a second wireless frame.
  • the AP may receive the second wireless frame sent by the first TDLS device and forward the second wireless frame to the second TDLS device. It is understood that in the embodiment of the present disclosure, the second wireless frame is forwarded by the AP to the second TDLS device.
  • the second wireless frame may carry a first TID-To-Link Mapping element
  • the first TID-To-Link Mapping element may include a TDLS TID Mapping identification bit
  • the TDLS TID Mapping identification bit is used to identify whether the parameter information carried by the TID-To-Link Mapping element is used for service identifier mapping on the TDLS link between TDLS devices.
  • the first TID-To-Link Mapping element is a service identifier to connection mapping (TID-To-Link Mapping) element;
  • the TDLS TID Mapping flag is a TDLS link Service ID mapping identifier (TDLS TID Mapping).
  • the format of the first TID-To-Link Mapping element is shown in Table 1 above.
  • the TDLS TID Mapping flag when the TDLS TID Mapping flag is set to 1, it can indicate that the parameter information carried by the TID-To-Link Mapping element is used for service identifier mapping on the TDLS link between TDLS devices; when the TDLS TID Mapping flag is set to 0, it can indicate that the parameter information carried by the TID-To-Link Mapping element is not used for service identifier mapping on the TDLS link between TDLS devices.
  • the second wireless frame may be a service identifier to connection mapping request (TID-To-Link Mapping Request) frame.
  • the first TID-To-Link Mapping element includes a Direction identification bit
  • the Direction identification bit is set to the first parameter value, indicating that the service identifier to connection mapping relationship included in the first TID-To-Link Mapping element is TDLS link peer transmission.
  • the first parameter value may be 3.
  • the TDLS TID Mapping flag is set to 1
  • the Direction flag is set to 3
  • the service identifier to connection mapping relationship included in the first TID-To-Link Mapping element is a TDLS link peer-to-peer transmission, that is, the service transmission mapped on the TDLS link is bidirectional peer-to-peer between TDLS devices.
  • the embodiment of the present disclosure provides a low-latency service transmission method.
  • the method is applied to a first TDLS device.
  • the method includes:
  • the first wireless frame includes first identification information, and the first identification information identifies that the access point device AP allocates a TXOP time slot to the first TDLS device;
  • the time slot of the TXOP is used for communication between the first TDLS device and the second TDLS device. Transmitting a first low-latency service via a TDLS link; the first TDLS device is a member of a first R-TWT scheduling;
  • the first service identifier of the first low-latency service includes the second service identifier of the second low-latency service mapped between the AP and the members scheduled by the first R-TWT.
  • the method Before receiving the first radio frame, the method includes:
  • the first TID-To-Link Mapping element includes a TDLS TID Mapping flag, and the TDLS TID Mapping flag indicates whether the parameter information carried by the TID-To-Link Mapping element is used for service identifier mapping on a TDLS link between TDLS devices;
  • the second radio frame is sent.
  • the method further includes:
  • the third wireless frame is forwarded by the AP from the second TDLS device, and the third wireless frame includes a second TID-To-Link Mapping element.
  • the third wireless frame carries a second TID-To-Link Mapping element;
  • the second TID-To-Link Mapping element is a service identifier to connection mapping (TID-To-Link Mapping) element.
  • the third wireless frame may be a service identifier to connection mapping response (TID-To-Link Mapping Response) frame.
  • a parameter of the TDLS TID Mapping flag of the second TID-To-Link Mapping element is the same as a parameter of the TDLS TID Mapping flag of the first TID-To-Link Mapping element;
  • the parameter of the Direction flag of the second TID-To-Link Mapping element is the same as the parameter of the Direction flag of the first TID-To-Link Mapping element.
  • the second TDLS device is identified as supporting peer-to-peer transmission of low-latency services on the TDLS link.
  • the parameter of the TDLS TID Mapping identification bit in the second radio frame is the same as the parameter of the TDLS TID Mapping identification bit in the third radio frame; and/or, the second radio frame
  • the parameter of the Direction identification bit in the wireless frame is the same as the parameter of the Direction identification bit in the third wireless frame; in this way, it can be identified that the second TDLS device supports the low-latency service of peer-to-peer transmission in the TDLS link.
  • the embodiment of the present disclosure provides a low-latency service transmission method.
  • the method is applied to a first TDLS device.
  • the method includes:
  • the first wireless frame includes first identification information, and the first identification information identifies that the access point device AP allocates a TXOP time slot to the first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the first service identifier of the first low-latency service includes the second service identifier of the second low-latency service mapped between the AP and the members scheduled by the first R-TWT.
  • the method After receiving the first radio frame, the method includes:
  • low-latency service data is transmitted with the second TDLS device via the TDLS link.
  • the AP allocates a transmission opportunity time slot to the member site scheduled by the R-TWT (for example, the first TDLS device). After the site that obtains the transmission opportunity replies with a CTS frame to the AP, it can send low-latency communication services to the corresponding TDLS site (for example, the second TDLS device) through the TDLS link within the obtained transmission opportunity time slot.
  • the member site scheduled by the R-TWT for example, the first TDLS device.
  • the first TDLS device and the second TDLS device are peer devices, for example, when the first TDLS device is the initiator, the second TDLS device is the responder; when the second TDLS device is the initiator, the first TDLS device is the responder.
  • the above embodiment is described by taking the first TDLS device sending data to the second TDLS device as an example (the first TDLS device is the initiator and the second TDLS device is the responder), and the method is also applicable to the second TDLS device sending data to the first TDLS device (the second TDLS device is the initiator and the first TDLS device is the responder).
  • the embodiment of the present disclosure also provides a low-latency service transmission method, which is applied to a first TDLS device, and the method includes:
  • the first wireless frame includes first identification information, and the first identification information identifies that the access point device AP allocates a TXOP time slot to the first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the first service identifier of the first low-latency service includes the second service identifier of the second low-latency service mapped between the AP and the members scheduled by the first R-TWT.
  • the method before receiving the first radio frame, the method includes:
  • the first TID-To-Link Mapping element includes a TDLS TID Mapping flag, and the TDLS TID Mapping flag indicates whether the parameter information carried by the TID-To-Link Mapping element is used for service identifier mapping on a TDLS link between TDLS devices;
  • the second radio frame is sent.
  • the first TID-To-Link Mapping element includes a Direction flag
  • the Direction identification bit is set to the first parameter value, indicating that the service identifier to connection mapping relationship included in the first TID-To-Link Mapping element is TDLS link peer transmission.
  • the method further includes:
  • the third wireless frame is forwarded by the AP from the second TDLS device, and the third wireless frame includes a second TID-To-Link Mapping element.
  • a parameter of the TDLS TID Mapping flag of the second TID-To-Link Mapping element is the same as a parameter of the TDLS TID Mapping flag of the first TID-To-Link Mapping element;
  • the parameter of the Direction flag of the second TID-To-Link Mapping element is the same as the parameter of the Direction flag of the first TID-To-Link Mapping element.
  • the second TDLS device is identified as supporting peer-to-peer transmission of low-latency services on the TDLS link.
  • the method includes:
  • low-latency service data is transmitted with the second TDLS device via the TDLS link.
  • the AP allocates the time slot of the TXOP to the first TDLS device through the first identification information; for R-TWT scheduling that can be applied between STA devices, the first TDLS device and the second TDLS device can transmit low-latency service data through the TDLS link established between the two in the time slot of the TXOP without the participation of the AP, further reducing the transmission delay in the low-latency service data transmission process and improving the low-latency service transmission efficiency.
  • the disclosed embodiment provides a transmission method for low-latency service data.
  • an embodiment of the present disclosure further provides a low-latency service transmission method, which is applied to a second TDLS device.
  • the method includes:
  • Step 401 Receive a first wireless frame
  • the first wireless frame includes first identification information, and the first identification information identifies that the access point device AP allocates a TXOP time slot to the first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the second service identifier of the second low-latency service mapped between the AP and the members scheduled by the first R-TWT includes the first service identifier of the first low-latency service.
  • the first wireless frame may include a multi-user request to send transmission opportunity sharing trigger frame MU-RTS TXS Trigger frame.
  • the first TDLS device and the second TDLS device can be two STAs, for example.
  • TDLS technology enables two STAs in the same basic service set to directly skip the AP to transmit data after establishing a TDLS connection (TDLS Link, i.e., TDLS link/TDLS channel), so that they are not restricted by the AP and use the fastest rate standard supported by the two STAs for direct transmission.
  • Direct transmission can be performed on the original link or on a new extended channel, thus avoiding the problem of The data transmission delay caused by network congestion is of great significance for the transmission of low-latency services.
  • the first TDLS device is a member of the first R-TWT scheduling. That is to say, when the second service identifier contains the first service identifier, only one of the first TDLS device and the second TDLS device needs to be a member of the first R-TWT scheduling, and the AP can allocate the TXOP time slot to the first TDLS device for the first TDLS device and the second TDLS device to transmit the first low-latency service via the TDLS link. Therefore, the disclosed embodiment is not only limited to the TDLS site devices being members of the R-TWT scheduling, but also further improves the flexibility and transmission efficiency of low-latency service transmission.
  • the second low-latency services mapped between the AP and the members of the R-TWT schedule include service 1, service 3, service 5 and service 6, that is, in the corresponding R-TWT SP, the transmission between the AP and STA1 is identified as the second low-latency service, and other services are suspended or postponed in the SP; accordingly, the second service identifier includes identifier 1, identifier 3, identifier 5 and identifier 6 corresponding to the above services respectively.
  • the first low-latency service mapped by the TDLS link between TDLS devices includes one or more service types of service 1, service 3, service 5 and service 6 (for example, the first service class includes service 0, service 1, service 4 and service 6, that is, the first service identifier includes identifier 0, identifier 1, identifier 4 and identifier 6 corresponding to the above services respectively).
  • the low-latency services of the second service identifier include the first service identifier (identifier 1 and identifier 6).
  • the AP allocates the time slot of the TXOP to the first TDLS device through the first identification information identification AP; for R-TWT scheduling that can be applied between STA devices, the first TDLS device and the second TDLS device can transmit low-latency service data within the time slot of the TXOP through the TDLS link established between the two without the participation of the AP, thereby further reducing the transmission delay in the process of low-latency service data transmission and improving the low-latency service transmission efficiency.
  • the embodiment of the present disclosure also provides a low-latency service transmission method, which is applied to a second TDLS device, and the method includes:
  • the first wireless frame includes first identification information, and the first identification information identifies that the access point device AP allocates a TXOP time slot to the first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the second service identifier of the second low-latency service mapped between the AP and the members scheduled by the first R-TWT includes the first service identifier of the first low-latency service.
  • the method Before receiving the first radio frame, the method includes:
  • the first TID-To-Link Mapping element includes a TDLS TID Mapping flag, and the TDLS TID Mapping flag indicates whether the parameter information carried by the TID-To-Link Mapping element is used for service identifier mapping on the TDLS link between TDLS devices.
  • a negotiation step of TDLS link service identifier to connection mapping may also be included.
  • the negotiation step may include the following steps:
  • the second TDLS receives a second radio frame, wherein the second radio frame is forwarded by the AP to a second TDLS device.
  • the second wireless frame may carry a first TID-To-Link Mapping element
  • the first TID-To-Link Mapping element may include a TDLS TID Mapping identification bit
  • the TDLS TID Mapping identification bit is used to identify whether the parameter information carried by the TID-To-Link Mapping element is used for service identifier mapping on the TDLS link between TDLS devices.
  • the first TID-To-Link Mapping element is a service identifier to connection mapping (TID-To-Link Mapping) element;
  • the TDLS TID Mapping identifier is a TDLS link service identifier mapping identifier (TDLS TID Mapping).
  • the format of the first TID-To-Link Mapping element is shown in Table 1 above.
  • the TDLS TID Mapping flag when the TDLS TID Mapping flag is set to 1, it can identify the The parameter information carried by the TID-To-Link Mapping element is used for service identifier mapping on the TDLS link between TDLS devices; when the TDLS TID Mapping flag bit is set to 0, it can be indicated that the parameter information carried by the TID-To-Link Mapping element is not used for service identifier mapping on the TDLS link between TDLS devices.
  • the second wireless frame may be a service identifier to connection mapping request (TID-To-Link Mapping Request) frame.
  • the first TID-To-Link Mapping element includes a Direction identification bit
  • the Direction identification bit is set to the first parameter value, indicating that the service identifier to connection mapping relationship included in the first TID-To-Link Mapping element is TDLS link peer transmission.
  • the first parameter value may be 3.
  • the TDLS TID Mapping flag is set to 1
  • the Direction flag is set to 3
  • the service identifier to connection mapping relationship included in the first TID-To-Link Mapping element is a TDLS link peer-to-peer transmission, that is, the service transmission mapped on the TDLS link is bidirectional peer-to-peer between TDLS devices.
  • the embodiment of the present disclosure also provides a low-latency service transmission method, which is applied to a second TDLS device, and the method includes:
  • the first wireless frame includes first identification information, and the first identification information identifies that the access point device AP allocates a TXOP time slot to the first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the second service identifier of the second low-latency service mapped between the AP and the members scheduled by the first R-TWT includes the first service identifier of the first low-latency service.
  • the method Before receiving the first radio frame, the method includes:
  • the first TID-To-Link Mapping element includes a TDLS TID Mapping flag, and the TDLS TID Mapping flag indicates whether the parameter information carried by the TID-To-Link Mapping element is used for service identifier mapping on the TDLS link between TDLS devices.
  • the method further includes:
  • the third wireless frame includes a second TID-To-Link Mapping element
  • the third radio frame is sent.
  • the third wireless frame carries a second TID-To-Link Mapping element;
  • the second TID-To-Link Mapping element is a service identifier to connection mapping (TID-To-Link Mapping) element.
  • the third wireless frame may be a service identifier to connection mapping response (TID-To-Link Mapping Response) frame.
  • a parameter of the TDLS TID Mapping flag of the second TID-To-Link Mapping element is the same as a parameter of the TDLS TID Mapping flag of the first TID-To-Link Mapping element;
  • the parameter of the Direction flag of the second TID-To-Link Mapping element is the same as the parameter of the Direction flag of the first TID-To-Link Mapping element.
  • the second TDLS device is identified as supporting peer-to-peer transmission of low-latency services on the TDLS link.
  • the parameter of the TDLS TID Mapping identification bit in the second radio frame is the same as the parameter of the TDLS TID Mapping identification bit in the third radio frame; and/or, the parameter of the Direction identification bit in the second radio frame is the same as the parameter of the Direction identification bit in the third radio frame; in this way, it can be identified that the second TDLS device supports peer-to-peer transmission of low-latency services on the TDLS link.
  • the embodiment of the present disclosure provides a low-latency service transmission method.
  • the method is applied to a second TDLS device.
  • the method includes:
  • the first wireless frame includes first identification information, and the first identification information identifies that the access point device AP allocates a TXOP time slot to the first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the second service identifier of the second low-latency service mapped between the AP and the members scheduled by the first R-TWT includes the first service identifier of the first low-latency service.
  • the method After receiving the first radio frame, the method includes:
  • low-latency service data is transmitted with the second TDLS device via the TDLS link.
  • the AP allocates a transmission opportunity time slot to the member site scheduled by the R-TWT (for example, the first TDLS device). After the site that obtains the transmission opportunity replies with a CTS frame to the AP, it can send low-latency communication services to the corresponding TDLS site (for example, the second TDLS device) through the TDLS link within the obtained transmission opportunity time slot.
  • the member site scheduled by the R-TWT for example, the first TDLS device.
  • the first TDLS device and the second TDLS device are peer devices, for example, when the first TDLS device is the initiator, the second TDLS device is the responder; when the second TDLS device is the initiator, the first TDLS device is the responder.
  • the above embodiment is described by taking the first TDLS device sending data to the second TDLS device as an example (the first TDLS device is the initiator and the second TDLS device is the responder), and the method is also applicable to the second TDLS device sending data to the first TDLS device (the second TDLS device is the initiator and the first TDLS device is the responder).
  • the embodiment of the present disclosure also provides a low-latency service transmission method, which is applied to a second TDLS device, and the method includes:
  • the first wireless frame includes first identification information, and the first identification information identifies that the access point device AP allocates a TXOP time slot to the first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the second service identifier of the second low-latency service mapped between the AP and the members scheduled by the first R-TWT includes the first service identifier of the first low-latency service.
  • the method before receiving the first radio frame, the method includes:
  • the first TID-To-Link Mapping element includes a TDLS TID Mapping flag, and the TDLS TID Mapping flag indicates whether the parameter information carried by the TID-To-Link Mapping element is used for service identifier mapping on the TDLS link between TDLS devices.
  • the TID-To-Link Mapping element includes a Direction flag
  • the Direction identification bit is set to the first parameter value, indicating that the service identifier to connection mapping relationship included in the first TID-To-Link Mapping element is TDLS link peer transmission.
  • the method further includes:
  • the third wireless frame is forwarded by the AP from the second TDLS device, and the third wireless frame includes a second TID-To-Link Mapping element.
  • a parameter of the TDLS TID Mapping flag of the second TID-To-Link Mapping element is the same as a parameter of the TDLS TID Mapping flag of the first TID-To-Link Mapping element;
  • the parameter of the Direction identification bit of the second TID-To-Link Mapping element is the same as the parameter of the Direction identification bit of the first TID-To-Link Mapping element, indicating that the second TDLS device supports peer-to-peer transmission of low-latency services on the TDLS link.
  • the method includes:
  • the TDLS link is used to transmit with the first TDLS device Low-latency business data.
  • the AP allocates the time slot of the TXOP to the first TDLS device through the first identification information; for R-TWT scheduling that can be applied between STA devices, the first TDLS device and the second TDLS device can transmit low-latency service data through the TDLS link established between the two in the time slot of the TXOP without the participation of the AP, further reducing the transmission delay in the low-latency service data transmission process and improving the low-latency service transmission efficiency.
  • the disclosed embodiment provides a transmission method for low-latency service data.
  • the embodiment of the present disclosure further provides an electronic device, the electronic device is an access point device AP, and the electronic device includes:
  • the determination module 501 is configured to determine a first radio frame; wherein the first radio frame includes first identification information, and the first identification information identifies a time slot of the TXOP allocated by the AP to the first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the second service identifier of the second low-latency service mapped between the AP and the member scheduled by the first R-TWT includes the first service identifier of the first low-latency service
  • the sending module 502 is configured to send a first radio frame.
  • the embodiment of the present disclosure also provides a low-latency service transmission device, which is applied to an access point device AP, and the device includes:
  • a wireless frame determination module configured to determine a first wireless frame; wherein the first wireless frame includes first identification information, and the first identification information identifies a time slot of a TXOP allocated by the AP to a first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the second service identifier of the second low-latency service mapped between the AP and the member scheduled by the first R-TWT includes the first service identifier of the first low-latency service
  • a wireless frame sending module is used to send the first wireless frame.
  • the device also includes other modules of the electronic device in the aforementioned embodiment, which will not be described in detail here.
  • the embodiment of the present disclosure further provides an electronic device, the electronic device is a first TDLS device, and the electronic device includes:
  • the receiving module 601 is configured to receive a first radio frame
  • the first wireless frame includes first identification information, and the first identification information identifies that the access point device AP allocates a TXOP time slot to the first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the second service identifier of the second low-latency service mapped between the AP and the members scheduled by the first R-TWT includes the first service identifier of the first low-latency service.
  • the embodiment of the present disclosure further provides a low-latency service transmission device, which is applied to a first TDLS device, and the device includes:
  • a wireless frame receiving module configured to receive a first wireless frame
  • the first wireless frame includes first identification information, and the first identification information identifies that the access point device AP allocates a TXOP time slot to the first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the second service identifier of the second low-latency service mapped between the AP and the members scheduled by the first R-TWT includes the first service identifier of the first low-latency service.
  • the device also includes other modules of the electronic device in the aforementioned embodiment, which will not be described in detail here.
  • the embodiment of the present disclosure further provides an electronic device, the electronic device is a second TDLS device, and the electronic device includes:
  • the receiving module 701 is configured to receive a first radio frame
  • the first wireless frame includes first identification information, and the first identification information identifies that the access point device AP allocates a TXOP time slot to the first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the second service identifier of the second low-latency service mapped between the AP and the members scheduled by the first R-TWT includes the first service identifier of the first low-latency service.
  • the embodiment of the present disclosure further provides a low-latency service transmission device, which is applied to a second TDLS device, and the device includes:
  • a wireless frame receiving module configured to receive a first wireless frame
  • the first wireless frame includes first identification information, and the first identification information identifies that the access point device AP allocates a TXOP time slot to the first TDLS device;
  • the time slot of the TXOP is used for the first TDLS device and the second TDLS device to transmit a first low-latency service through a TDLS link; the first TDLS device is a member of the first R-TWT scheduling;
  • the second service identifier of the second low-latency service mapped between the AP and the members scheduled by the first R-TWT includes the first service identifier of the first low-latency service.
  • the device also includes other modules of the electronic device in the aforementioned embodiment, which will not be described in detail here.
  • the present disclosure embodiment further provides an electronic device, as shown in FIG8 , the electronic device 700 shown in FIG8 may be a server, including: a processor 701 and a memory 703. The processor 701 and the memory 703 are connected, such as through a bus 702.
  • the electronic device 700 may also include a transceiver 704. It should be noted that in actual applications, the transceiver 704 is not limited to one, and the structure of the electronic device 700 does not constitute an embodiment of the present disclosure. limitation.
  • Processor 701 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute various exemplary logic blocks, modules and circuits described in conjunction with the disclosure of the present invention. Processor 701 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.
  • the bus 702 may include a path for transmitting information between the above components.
  • the bus 702 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc.
  • the bus 702 may be divided into an address bus, a data bus, a control bus, etc.
  • FIG8 only uses a thick line, but it does not mean that there is only one bus or one type of bus.
  • the memory 703 can be a ROM (Read Only Memory) or other types of static storage devices that can store static information and instructions, a RAM (Random Access Memory) or other types of dynamic storage devices that can store information and instructions, or an EEPROM (Electrically Erasable Programmable Read Only Memory), a CD-ROM (Compact Disc Read Only Memory) or other optical disk storage, optical disk storage (including compressed optical disk, laser disk, optical disk, digital versatile disk, Blu-ray disk, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited to these.
  • ROM Read Only Memory
  • RAM Random Access Memory
  • EEPROM Electrically Erasable Programmable Read Only Memory
  • CD-ROM Compact Disc Read Only Memory
  • optical disk storage including compressed optical disk, laser disk, optical disk, digital versatile disk, Blu-ray disk, etc.
  • magnetic disk storage medium or other magnetic storage device or any
  • the memory 703 is used to store application code for executing the solution of the present disclosure, and the execution is controlled by the processor 701.
  • the processor 701 is used to execute the application code stored in the memory 703 to implement the content shown in the above method embodiment.
  • the electronic devices include but are not limited to: mobile phones, laptop computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), and mobile terminals such as digital A fixed terminal of a TV, a desktop computer, etc.
  • the electronic device shown in FIG8 is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.
  • the server provided by the present disclosure may be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, CDN, and big data and artificial intelligence platforms.
  • the terminal may be a smart phone, tablet computer, laptop computer, desktop computer, smart speaker, smart watch, etc., but is not limited thereto.
  • the terminal and the server may be directly or indirectly connected via wired or wireless communication, which is not limited by the present disclosure.
  • An embodiment of the present disclosure provides a computer-readable storage medium, on which a computer program is stored.
  • the computer-readable storage medium is run on a computer, the computer can execute the corresponding contents of the aforementioned method embodiment.
  • the above-mentioned computer-readable medium of the present disclosure may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two.
  • the computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above.
  • Computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.
  • a computer-readable storage medium may be any suitable medium that contains or stores a program.
  • a computer-readable signal medium may be a computer-readable medium, and the program may be used by or in combination with an instruction execution system, device or device.
  • a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable program code. This propagated data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above.
  • a computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in combination with an instruction execution system, device or device.
  • the program code contained on the computer-readable medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.
  • the computer-readable medium may be included in the electronic device, or may exist independently without being incorporated into the electronic device.
  • the computer-readable medium carries one or more programs.
  • the electronic device executes the method shown in the above embodiment.
  • a computer program product or a computer program includes computer instructions, the computer instructions are stored in a computer-readable storage medium.
  • a processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the methods provided in the above-mentioned various optional implementations.
  • Computer program code for performing the operations of the present disclosure may be written in one or more programming languages, or a combination thereof, including object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" or similar programming languages.
  • the program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server.
  • the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider).
  • LAN local area network
  • WAN wide area network
  • Internet service provider e.g., AT&T, MCI, Sprint, EarthLink, MSN, GTE, etc.
  • Each square frame in the figure or block diagram can represent a module, a program segment, or a part of a code, and the module, the program segment, or a part of the code comprises one or more executable instructions for realizing the logical function of the regulation.
  • the function marked in the square frame can also occur in a sequence different from that marked in the accompanying drawings. For example, two square frames represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the function involved.
  • each square frame in the block diagram and/or the flow chart, and the combination of the square frames in the block diagram and/or the flow chart can be realized by a dedicated hardware-based system that performs the function or operation of the regulation, or can be realized by a combination of dedicated hardware and computer instructions.
  • modules involved in the embodiments described in the present disclosure may be implemented by software or hardware.
  • the name of a module does not limit the module itself in some cases.
  • module A may also be described as "module A for performing operation B".

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Des modes de réalisation de la présente divulgation se rapportent au domaine technique des communications mobiles et concernent un procédé de transmission de service à faible latence, un dispositif électronique et un support de stockage. Le procédé de transmission de service à faible latence est appliqué à un dispositif de point d'accès (AP), et le procédé consiste à : déterminer une première trame radio, la première trame radio comprenant des premières informations d'identification, les premières informations d'identification identifiant que l'AP attribue un créneau temporel TXOP à un premier dispositif TDLS, le créneau temporel TXOP étant utilisé pour le premier dispositif TDLS et un second dispositif TDLS pour transmettre un premier service à faible latence au moyen d'une liaison TDLS, le premier dispositif TDLS étant un élément d'un premier programme R-TWT, et un second identifiant de service d'un second service à faible latence mappé entre l'AP et l'élément du premier programme R-TWT comprenant un premier identifiant de service du premier service à faible latence ; et transmettre la première trame radio. Les modes de réalisation de la présente divulgation peuvent fournir un mode de transmission de données de service à faible latence.
PCT/CN2023/091394 2023-04-27 2023-04-27 Procédé de transmission de service à faible latence, dispositif électronique et support de stockage Pending WO2024221371A1 (fr)

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PCT/CN2023/091394 WO2024221371A1 (fr) 2023-04-27 2023-04-27 Procédé de transmission de service à faible latence, dispositif électronique et support de stockage
CN202380009182.6A CN116830720A (zh) 2023-04-27 2023-04-27 低时延业务传输方法、电子设备及存储介质

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WO2025076664A1 (fr) * 2023-10-09 2025-04-17 北京小米移动软件有限公司 Procédé de transmission de service à faible latence, dispositif de communication et système de communication

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CN115334685A (zh) * 2021-05-03 2022-11-11 联发科技（新加坡）私人有限公司 无线通信方法及装置
US20230021113A1 (en) * 2021-07-09 2023-01-19 Samsung Electronics Co., Ltd. Restricted twt operation for peer-to-peer communication
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US20230104446A1 (en) * 2021-09-22 2023-04-06 Qualcomm Incorporated Low latency schemes for peer-to-peer (p2p) communications

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