WO2024087627A1 - 一种协作传输方法及相关装置 - Google Patents

一种协作传输方法及相关装置 Download PDF

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Publication number
WO2024087627A1
WO2024087627A1 PCT/CN2023/097267 CN2023097267W WO2024087627A1 WO 2024087627 A1 WO2024087627 A1 WO 2024087627A1 CN 2023097267 W CN2023097267 W CN 2023097267W WO 2024087627 A1 WO2024087627 A1 WO 2024087627A1
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WO
WIPO (PCT)
Prior art keywords
network device
transmission
nav
terminal device
frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/097267
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English (en)
French (fr)
Inventor
郭宇宸
淦明
李云波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to AU2023370586A priority Critical patent/AU2023370586A1/en
Priority to KR1020257016092A priority patent/KR20250090328A/ko
Priority to JP2025524294A priority patent/JP2025536980A/ja
Priority to EP23881218.4A priority patent/EP4593495A4/en
Publication of WO2024087627A1 publication Critical patent/WO2024087627A1/zh
Priority to MX2025004903A priority patent/MX2025004903A/es
Priority to US19/189,892 priority patent/US20250267709A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H04W74/0816—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • 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
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/04—Scheduled access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • the present application relates to the field of communications, and in particular to a collaborative transmission method and related devices.
  • Inter-cell interference can be reduced through collaboration between network devices. For example, after network device #1 obtains a transmission opportunity (TXOP), if it fails to use up its TXOP, it can share the remaining TXOP time with other network devices (taking network device #2 as an example) for transmission.
  • TXOP transmission opportunity
  • network device #2 When network device #1 shares part of the transmission opportunity with network device #2, network device #2 sends a trigger frame to its associated terminal device to trigger the terminal device to perform uplink transmission.
  • the terminal device may not be able to respond to the trigger frame sent by network device #2 because the network allocation vector (NAV) is set by network device #1, that is, it cannot perform uplink transmission. As a result, the transmission resources will be idle during this period of time, and the resource utilization rate will be low.
  • NAV network allocation vector
  • the present application provides a collaborative transmission method and related devices to improve resource utilization.
  • the present application provides a collaborative transmission method, which can be executed by a terminal device, or by a component configured in the terminal device (such as a chip, a chip system, etc.), or by a logic module or software that can implement all or part of the terminal device functions, and the present application does not limit this.
  • the first network device is a network device that shares transmission opportunities in collaborative transmission
  • the second network device is a network device that shares transmission opportunities with the first network device.
  • the second network device is taken as an example of a first wireless access point (access point, AP)
  • the first network device is taken as an example of including a second AP, or including a second AP and a station co-located with the second AP, to describe the collaborative transmission method provided in the present application.
  • first network device and the second network device may also be other types of network devices, which is not limited in this application.
  • the method includes: receiving a trigger frame from a first network device, the trigger frame being used to trigger a terminal device to perform uplink transmission, the first network device being a network device that shares transmission opportunities in collaborative transmission; determining a NAV, the NAV being used to indicate that a channel state is busy, the NAV being set by a first AP, the first AP being an AP that shares transmission opportunities with the first network device in collaborative transmission; and performing uplink transmission with the first network device when preset conditions are met.
  • the terminal device after receiving the trigger frame from the first network device, the terminal device determines the first AP The set NAV, even if the NAV is used to indicate that the channel status is busy, as long as the preset conditions are met, the terminal device can perform uplink transmission with the first network device. In other words, the terminal device can ignore the NAV set by the first AP and successfully respond to the trigger frame from the first network device. In this way, the terminal device successfully performs uplink transmission with the first network device, which is beneficial to improve resource utilization.
  • a first possible design is that the above-mentioned preset condition includes: receiving first indication information from the first network device, the first indication information is used to instruct the terminal device to ignore the NAV set by the first AP, or the first indication information is used to instruct the terminal device to ignore the NAV.
  • the first indication information may be carried in a trigger frame from the first network device.
  • the first indication information can instruct the terminal device to ignore the NAV set by the first AP, that is, even if the NAV set by the first AP indicates that the channel status is busy, the terminal device can respond to the trigger frame sent by the first network device and perform uplink transmission with the first network device.
  • the first indication information can also be used to instruct the terminal device to ignore NAV.
  • the terminal device can ignore not only the NAV set by the first AP, but also the NAV set by other APs or sites. Even if the current NAV indicates that the channel status is busy, the terminal device can respond to the trigger frame sent by the first network device and perform uplink transmission with the first network device.
  • a second possible design is that the above-mentioned preset conditions include: a medium access control (MAC) address of a pre-stored transmission opportunity holder (TXOP holder) is the same as the MAC address of the first AP.
  • MAC medium access control
  • the terminal device also needs to determine the MAC address of the first AP.
  • the trigger frame also carries the identifier of the first AP
  • the terminal device determines the MAC address of the first AP based on the identifier of the first AP and a pre-stored mapping relationship between the identifier of the first AP and the MAC address of the first AP.
  • the terminal device may pre-receive the mapping relationship between the identifier of the first AP and the MAC address of the first AP from the first network device, and store it, so that after the terminal device receives the identifier of the first AP, it can determine the MAC address of the first AP based on the above mapping relationship.
  • the terminal device obtains a response frame sent by the first network device, the response frame carries the MAC address of the first AP, and the response frame is used to respond to the transmission opportunity sharing frame sent by the first AP, and the transmission opportunity sharing frame is used to instruct the first AP to share the transmission opportunity with the first network device; obtain the MAC address of the first AP from the response frame.
  • the transmission opportunity sharing frame sent by the first network device in response to the transmission opportunity sharing frame sent by the first AP carries the MAC address of the first AP.
  • the terminal device can monitor the above response frame and obtain the MAC address of the first AP from the above response frame.
  • the first network device includes the second AP, or the first network device includes the second AP and a station.
  • the first AP can send a transmission opportunity sharing frame to the second AP, and the second AP sends a response frame to the first AP;
  • the first network device includes a second AP and a station, the first AP can send a transmission opportunity sharing frame to the second AP, and the second AP sends a response frame to the first AP, or the first AP can send a transmission opportunity sharing frame to the station, and the station sends a response frame to the first AP.
  • the transmission opportunity sharing frame is a multi-user request to send (MU-RTS) frame
  • the MU-RTS frame includes a preset field, which is used to instruct the first AP to share the transmission opportunity with the second AP in the first network device.
  • the first AP shares the transmission opportunity with the first network device.
  • One possible situation is that the transmission opportunity can be used for the first
  • the second AP communicates with the terminal device associated with the second AP; another possible situation is that the transmission opportunity can be used for the second AP to communicate with the terminal device associated with the second AP, and can also be used for the station in the first network device to communicate with the terminal device, or the station in the first network device to communicate with the first AP.
  • the above-mentioned preset field can be used to indicate that the first AP shares the transmission opportunity with the second AP in the first network device, that is, the transmission opportunity can be used for the second AP to communicate with the terminal device associated with the second AP.
  • the above-mentioned preset condition includes: the above-mentioned NAV is a NAV within a basic service set (basic service set, intra-BSS).
  • the protocol stipulates that after the terminal device receives the trigger frame, if it needs to determine whether the channel status is busy or idle, it can only determine whether the basic NAV is not zero, without determining whether the intra-BSS NAV is not zero. Therefore, in this application, the NAV set by the first AP is set to the intra-BSS NAV, and then after the terminal device receives the trigger frame, it can ignore the NAV set by the first AP and successfully perform uplink transmission with the first network device.
  • the terminal device can set the NAV in the following way: after the terminal device receives a wireless frame from the first AP, if the wireless frame instructs the terminal device to set the NAV, it further determines whether the first AP belongs to an AP in a pre-stored collaborative set. If so, the NAV is determined to be an intra-BSS NAV.
  • the cooperation set may be sent in advance by the first network device to the terminal device, so that after the terminal device receives the wireless frame, it can determine whether the sender of the wireless frame belongs to the cooperation set.
  • the present application provides a collaborative transmission method, which can be executed by a first network device, or can be executed by a component configured in the first network device (such as a chip, a chip system, etc.), or can be implemented by a logic module or software that can realize all or part of the functions of the first network device.
  • a collaborative transmission method which can be executed by a first network device, or can be executed by a component configured in the first network device (such as a chip, a chip system, etc.), or can be implemented by a logic module or software that can realize all or part of the functions of the first network device.
  • the present application does not limit this.
  • the method includes: sending a trigger frame to a terminal device, the trigger frame being used to trigger the terminal device to perform uplink transmission, the trigger frame carrying first indication information, the first indication information being used to instruct the terminal device to ignore the NAV set by the first AP, the first network device being a network device that shares transmission opportunities in collaborative transmission, and the first AP being an AP that shares transmission opportunities in collaborative transmission; and receiving uplink data from the terminal device.
  • the first network device sends a trigger frame to the terminal device to trigger the terminal device to perform uplink transmission.
  • the trigger frame carries first indication information to instruct the terminal device to ignore the NAV set by the first AP. That is, even if the NAV set by the first AP indicates that the channel status is busy, the terminal device can respond to the trigger frame sent by the first network device and perform uplink transmission with the first network device. In this way, the terminal device can use the time shared by the first AP to perform uplink transmission with the first network device, which is conducive to improving resource utilization.
  • the first indication information is also used to instruct the terminal device to ignore the NAV.
  • the first indication information can also be used to instruct the terminal device to ignore NAV.
  • the terminal device can ignore not only the NAV set by the first AP, but also the NAV set by other APs or sites. In this way, even if the current NAV indicates that the channel status is busy, the terminal device can respond to the trigger frame sent by the first network device and perform uplink transmission with the first network device, which is conducive to improving resource utilization.
  • the present application provides a collaborative transmission method, which can be executed by a first network device, or can also be executed by a component configured in the first network device (such as a chip, a chip system, etc.), or can also be implemented by a logic module or software that can implement all or part of the functions of the first network device.
  • a collaborative transmission method which can be executed by a first network device, or can also be executed by a component configured in the first network device (such as a chip, a chip system, etc.), or can also be implemented by a logic module or software that can implement all or part of the functions of the first network device.
  • a component configured in the first network device such as a chip, a chip system, etc.
  • a logic module or software that can implement all or part of the functions of the first network device.
  • the method includes: sending a trigger frame to a terminal device, the trigger frame is used to trigger the terminal device to perform uplink transmission, the trigger frame carries an identifier of a first AP, the identifier of the first AP is used by the terminal device to determine that the NAV stored in itself is the NAV set by the first AP, the first network device is a network device that shares a transmission opportunity in collaborative transmission, An AP is an AP that shares transmission opportunities in collaborative transmission and receives uplink data from terminal devices.
  • the first network device sends a trigger frame to the terminal device to trigger the terminal device to perform uplink transmission.
  • the trigger frame carries the identifier of the first AP.
  • the identifier of the first AP is used by the terminal device to determine that the NAV stored in itself is the NAV set by the first AP. That is to say, when the NAV stored in the terminal device itself is the NAV set by the first AP, the terminal device can ignore the NAV, respond to the trigger frame sent by the first network device, and perform uplink transmission with the first network device. In this way, the terminal device can use the time shared by the first AP to perform uplink transmission with the first network device, which is conducive to improving resource utilization.
  • the present application provides a collaborative transmission method, which can be executed by a first AP, or by a component configured in the first AP (such as a chip, a chip system, etc.), or by a logic module or software that can implement all or part of the functions of the first AP.
  • a collaborative transmission method which can be executed by a first AP, or by a component configured in the first AP (such as a chip, a chip system, etc.), or by a logic module or software that can implement all or part of the functions of the first AP.
  • the present application does not limit this.
  • the method includes: sending a transmission opportunity sharing frame to the first network device, the transmission opportunity sharing frame is used to instruct the first AP to share a transmission opportunity with a second AP in the first network device, the first network device is a network device with a shared transmission opportunity in collaborative transmission, and the first AP is an AP sharing a transmission opportunity in collaborative transmission; and receiving a response frame from the first network device.
  • the first AP can send a transmission opportunity sharing frame to the first network device to instruct the first AP to share the transmission opportunity with the second AP in the first network device. That is, the second AP in the first network device can communicate with its associated terminal device based on the transmission opportunity shared by the first AP. In this way, the second AP can obtain transmission resources for transmission more quickly, which is conducive to reducing its communication delay.
  • the present application provides a communication device that can implement the method in the first to fourth aspects and any possible implementation of the first to fourth aspects.
  • the device includes a corresponding unit for executing the above method.
  • the unit included in the device can be implemented by software and/or hardware.
  • the present application provides a communication device, the device comprising a processor.
  • the processor is coupled to a memory and can be used to execute a computer program in the memory to implement the method in the first to fourth aspects and any possible implementation of the first to fourth aspects.
  • the device also includes a memory.
  • the device further includes a communication interface, and the processor is coupled to the communication interface.
  • the present application provides a computer-readable storage medium, which stores a computer program or instructions.
  • the computer program or instructions When executed, the method in the above-mentioned first to fourth aspects and any possible implementation method of the first to fourth aspects is implemented.
  • the present application provides a computer program product, which includes instructions, and when the instructions are executed, the methods in the above-mentioned first to fourth aspects and any possible implementation manner of the first to fourth aspects are implemented.
  • the present application provides a chip system, which includes at least one processor for supporting the implementation of the functions involved in the above-mentioned first to fourth aspects and any possible implementation method of the first to fourth aspects, for example, receiving or processing the data involved in the above-mentioned method, etc.
  • the chip system also includes a memory, which is used to store program instructions and data, and the memory is located inside or outside the processor.
  • the chip system may be composed of the chip, or may include the chip and other discrete devices.
  • the present application further provides a chip, the chip comprising a processor and a communication interface, the processor via The communication interface reads the instructions stored in the memory and executes the method in the above-mentioned first to fourth aspects and any possible implementation manner of the first to fourth aspects.
  • FIG1 is a schematic diagram of a network architecture of a communication system applicable to the method provided in an embodiment of the present application
  • FIG2 is a schematic flow chart of a collaborative transmission method provided in an embodiment of the present application.
  • FIG3 is a schematic diagram of a transmission process of each frame provided in an embodiment of the present application.
  • FIG4 is a schematic block diagram of a communication device provided in an embodiment of the present application.
  • FIG5 is another schematic block diagram of a communication device provided in an embodiment of the present application.
  • FIG6 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application.
  • the words “first”, “second”, etc. are used to distinguish the same items or similar items with basically the same functions and effects.
  • the first AP and the second AP are only used to distinguish different APs, and their order is not limited.
  • the words “first”, “second”, etc. do not limit the quantity and execution order, and the words “first”, “second”, etc. do not necessarily limit them to be different.
  • a and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural.
  • the character “/” generally indicates that the previous and next associated objects are in an “or” relationship, but it does not exclude the situation where the previous and next associated objects are in an "and” relationship.
  • the specific meaning can be understood in combination with the context. "The following one or more items” or similar expressions refer to any combination of these items, including any combination of single items or plural items.
  • one or more items of a, b, or c can represent: a, b, c; a and b; a and c; b and c; or a and b and c.
  • a, b, c can be single or multiple.
  • words such as “exemplarily” and “for example” are used to indicate examples, illustrations or explanations. Any embodiment or design described as “exemplarily” or “for example” in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as “exemplarily” or “for example” is intended to present related concepts in a specific way.
  • the technical solution provided in the present application can be applied to wireless local area network (WLAN) systems, wireless personal area network systems based on ultra wide band (UWB) technology, and sensing systems. It can also be applied to global system for mobile communications (GSM) systems, code division multiple access (CDMA) systems, wideband code division multiple access (WCDMA) systems, general packet radio service (GPRS), long term evolution (LTE) systems, and LTE frequency division duplex (FDD) systems.
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • FDD frequency division duplex
  • Division duplex (FDD) system LTE time division duplex (TDD), sidelink communication system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, fifth generation (5G) mobile communication system or new radio access technology (NR).
  • NSA non-standalone
  • SA standalone
  • the network device may be any device with wireless transceiver function.
  • the network equipment includes, but is not limited to, evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved Node B, or home Node B, HNB), baseband unit (BBU), AP in wireless fidelity (Wi-Fi) system, wireless relay node, wireless backhaul node, transmission point (TP) or transmission and reception point (TRP), etc.
  • eNB evolved Node B
  • RNC radio network controller
  • NB Node B
  • BSC base station controller
  • BTS base transceiver station
  • home base station e.g., home evolved Node B, or home Node B, HNB
  • BBU baseband unit
  • AP in wireless fidelity (Wi-Fi) system, wireless relay node, wireless backhaul node, transmission point (TP) or transmission and reception point (TRP), etc
  • It can also be a gNB or transmission point (TRP or TP) in a 5G (such as NR) system, or one or a group of (including multiple antenna panels) antenna panels of a base station in a 5G system, or it can also be a network node constituting a gNB or transmission point, such as a baseband unit (BBU), or a distributed unit (DU), etc.
  • TRP or TP transmission point
  • 5G such as NR
  • TP transmission point
  • BBU baseband unit
  • DU distributed unit
  • the first network device and the second network device may be, for example, the network devices described above.
  • the network device may include an AP and a site co-located therewith, wherein co-location may be understood as AP and site being two logical entities in the network device, which are deployed in the same physical device.
  • the terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device.
  • UE user equipment
  • a terminal device can be a device that provides voice/data connectivity to users, such as a handheld device with wireless connection function, a vehicle-mounted device, etc.
  • some examples of terminal devices can be: mobile phones, tablet computers (pad), computers with wireless transceiver functions (such as laptops, PDAs, etc.), mobile Internet devices (mobile internet devices, MID), virtual reality (virtual reality, VR) devices, augmented reality (augmented reality, AR) devices, wireless terminals in industrial control (industrial control), wireless terminals in self-driving, drones, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety (transportation safety) devices, etc.
  • wireless terminals in smart cities wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDA), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks or terminal devices in future evolved public land mobile communication networks (PLMN), etc.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistants
  • handheld devices with wireless communication functions computing devices or other processing devices connected to wireless modems
  • vehicle-mounted devices wearable devices
  • PLMN public land mobile communication networks
  • Wearable devices can also be called wearable smart devices, which are a general term for wearable devices that use wearable technology to intelligently design and develop wearable devices for daily wear, such as glasses, gloves, watches, clothing and shoes.
  • Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothes or accessories.
  • Wearable devices are not just hardware devices, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, and can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.
  • the terminal device can also be a terminal device in the Internet of Things (IoT) system.
  • IoT Internet of Things
  • Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and object-to-object interconnection.
  • IoT technology can achieve massive connections, deep coverage, and terminal power saving through narrow band (NB) technology, for example.
  • NB narrow band
  • the present application does not limit the specific forms of the first network device, the second network device, and the terminal device.
  • next-generation Wi-Fi protocol such as the next-generation standard IEEE802.11be (also known as Wi-Fi 7, or extremely high throughput (EHT protocol)
  • Wi-Fi 7 also known as Wi-Fi 7, or extremely high throughput (EHT protocol)
  • Wi-Fi 802.11be next-generation Wi-Fi protocols such as Wi-Fi 8, UHR, or Wi-Fi AI
  • Time division multiple access It means that each device uses the same frequency and takes turns to occupy the channel for transmission in time.
  • network devices can perform collaborative transmission based on TDMA (also known as coordinated transmission, joint transmission, etc.).
  • TDMA also known as coordinated transmission, joint transmission, etc.
  • network device #1 obtains TXOP, if it fails to use up its TXOP, it can share the remaining time in TXOP with other network devices (taking network device #2 as an example) for transmission.
  • taking the network device AP taking the network device AP as an example, after AP #1 obtains TXOP, if it fails to use up its TXOP, it can share the remaining time in TXOP with other APs for transmission.
  • the AP that shares the transmission opportunity can be called a sharing AP, and other APs that share the transmission opportunity can be called a shared AP.
  • TXOP It is the basic unit of wireless channel access. TXOP refers to a time interval. When a network device obtains TXOP, it can use the channel to transmit one or more data frames within the time interval.
  • NAV refers to a time interval during which the terminal device considers the channel status to be busy, and thus does not perform channel access and data transmission.
  • a terminal device monitors a wireless frame, if the wireless frame carries relevant information of NAV, it updates its own stored NAV, and the updated NAV is the maximum value of its own stored NAV and the NAV carried in the wireless frame.
  • FIG1 is a schematic diagram of a network architecture of a communication system 100 applicable to the method provided in an embodiment of the present application.
  • the communication system 100 may include at least two network devices, such as network device 110 and network device 120 as shown in Figure 1.
  • Each network device can provide communication coverage for a specific geographical area and can perform wireless link communication with terminal devices located in the coverage area (cell).
  • the network device 110 shown in Figure 1 can perform wireless link communication with terminal device 130, and the network device 120 can perform wireless link communication with terminal device 140.
  • the terminal device 130 and the terminal device 140 may be mobile or fixed, which is not limited in the present application.
  • the communication system shown in the communication system 100 may include more network devices, and each network device may include other numbers of terminal devices within its coverage area, which is not limited in the embodiments of the present application.
  • the network device 110 and the network device 120 can perform cooperative transmission to reduce inter-cell interference.
  • the network device 110 obtains the TXOP and performs data transmission, and fails to use up its TXOP
  • the remaining time in the TXOP can be shared with the network device 120 for use.
  • the network device 120 shares a part of the time in the TXOP with the network device 120
  • the network device 120 sends a trigger frame to the terminal device 140 associated with it to trigger the terminal device 140 to perform uplink transmission, but the terminal device 140 may be unable to respond to the trigger frame sent by the network device 120 because the NAV is set by the network device 110, that is, it cannot perform uplink transmission. In this way, the transmission resources will be idle during this period, and the resource utilization rate is low.
  • the present application provides a collaborative transmission method, which includes: after receiving a trigger frame from a first network device, the terminal device determines the NAV set by the second network device, where the NAV is used to indicate that the channel status is busy, and performs uplink transmission with the first network device when preset conditions are met.
  • the terminal device can ignore the NAV set by the second network device and directly respond to the trigger frame without paying attention to the channel status indicated by the NAV set by the second network device. In this way, the terminal device successfully performs uplink transmission with the first network device, which is conducive to improving resource utilization.
  • the following description uses the scenario in which the first network device is a network device that shares a transmission opportunity in collaborative transmission, and the second network device is a network device that shares the above transmission opportunity with the first network device as an example, but it should not constitute any limitation on the embodiments of the present application.
  • the method provided by the present application can also be applied to other scenarios, such as a scenario in which the second network device and the first network device do not share a transmission opportunity.
  • the terminal device After the terminal device receives a trigger frame from the first network device, it determines the NAV, which indicates that the channel is busy.
  • the preset conditions When the preset conditions are met, it performs uplink transmission with the first network device, that is, ignores the NAV set by the second network device, and successfully responds to the trigger frame from the first network device.
  • the first network device that is, ignores the NAV set by the second network device, and successfully responds to the trigger frame from the first network device.
  • the second network device takes the first AP as an example, and the first network device takes the second AP, or the second AP and a site co-located with the second AP as an example, to describe the collaborative transmission method provided in the present application in detail.
  • the first network device and the second network device may also be other types of network devices as described above, and the present application does not limit this.
  • the embodiment shown below describes the method from the perspective of the interaction between the first network device and the terminal device, but should not constitute any limitation on the execution subject of the method.
  • the program that can run the code of the method provided by the embodiment of the present application can be executed.
  • the terminal device can also be replaced by a component configured in the terminal device (such as a chip, a chip system, etc.), or other functional modules that can call and execute programs
  • the first network device can also be replaced by a component configured in the first network device (such as a chip, a chip system, etc.), or other functional modules that can call and execute programs.
  • the embodiment of the present application does not limit this.
  • Fig. 2 is a schematic flow chart of a collaborative transmission method 200 provided in an embodiment of the present application.
  • the collaborative transmission method 200 shown in Fig. 2 may include S210 to S230. Each step in the method 200 is described in detail below.
  • the first network device sends a trigger frame to the terminal device, where the trigger frame is used to trigger the terminal device to perform uplink transmission.
  • the terminal device receives the trigger frame from the first network device.
  • the first network device is a network device that shares the transmission opportunity, and the first network device may include the second AP, or include the second AP and the station.
  • the terminal device is a terminal device that is connected to the first network device for communication.
  • the trigger frame may be a basic trigger frame, which is used to trigger the terminal device to perform uplink transmission.
  • the trigger frame may also be a MU-RTS trigger frame, which is used to determine whether the channel of the terminal device is idle.
  • the trigger frame may also be a multi-user bandwidth query report poll (MU-BQRP) trigger frame, which is used to inquire about the idle channels of the terminal device.
  • MU-BQRP multi-user bandwidth query report poll
  • the second AP in the first network device sends a trigger frame to the terminal device to trigger the terminal device to perform uplink transmission.
  • the terminal device receives the trigger frame from the second AP.
  • the method further includes: the first network device receives a transmission opportunity sharing frame from the first AP, and the transmission opportunity sharing frame is used to instruct the first AP to share the transmission opportunity with the first network device; the first network device sends a response frame to the first AP, and the response frame is used to respond to the above-mentioned transmission opportunity sharing frame.
  • the first AP sharing the transmission opportunity with the first network device means that the first AP shares a period of time in the transmission opportunity with the first network device for transmission.
  • the first network device includes a second AP, in which case the first AP sends a transmission opportunity sharing frame to the second AP, the transmission opportunity sharing frame being used to instruct the first AP to share the transmission opportunity with the second AP for transmission. Accordingly, the second AP sends a response frame to the first AP.
  • the first network device includes a second AP and a site co-located with the second AP.
  • the first AP can send a transmission opportunity sharing frame to the second AP, and the transmission opportunity sharing frame is used to instruct the first AP to share the transmission opportunity with the second AP for transmission.
  • the second AP sends a response frame to the first AP.
  • the first AP can also send a transmission opportunity sharing frame to the site, and the transmission opportunity sharing frame is used to instruct the first AP to share the transmission opportunity with the second AP for transmission.
  • the site sends a response frame to the first AP.
  • the second AP is co-located with the site, which can be understood as the second AP and the site are two logical entities in the first network device, which are deployed in the same physical device.
  • the site can notify the second AP that the first AP shares its transmission opportunity with the second AP, so that the second AP sends a trigger frame to the terminal device.
  • the transmission opportunity sharing frame may be a MU-RTS frame
  • the response frame may be a clear to send (CTS) frame.
  • CTS clear to send
  • the first AP shares the transmission opportunity with the first network device.
  • the transmission opportunity can be used for communication between the second AP and the terminal device associated with the second AP; another possible scenario is that the transmission opportunity can be used for communication between the second AP and the terminal device associated with the second AP, and can also be used for communication between the station in the first network device and the terminal device, or, the station in the first network device and the first AP.
  • the above-mentioned MU-RTS frame may include a preset field to instruct the first AP to share the transmission opportunity with the second AP in the first network device, that is, the transmission opportunity can be used for communication between the second AP and the terminal device associated with the second AP.
  • a value of 3 in this field indicates that the first AP shares the transmission opportunity with the second AP in the first network device, that is, the transmission opportunity can be used for communication between the second AP and the terminal device associated with the second AP.
  • a value of 2 in this field indicates that the first AP shares the transmission opportunity with the second AP in the first network device. It also indicates that the first AP shares the transmission opportunity with the station in the first network device, that is, the transmission opportunity can be used for the second AP to communicate with the terminal device associated with the second AP, and can also be used for the station in the first network device to communicate with the terminal device, or the station in the first network device to communicate with the first AP.
  • this application does not limit how the first network device allocates the transmission opportunity to the second AP and the station.
  • a period of time in the transmission opportunity can be used for the second AP to communicate with the terminal device associated with the second AP, and another period of time can be used for the station in the first network device to communicate with the terminal device, or the station in the first network device can communicate with the first AP.
  • S220 The terminal device determines a NAV, where the NAV is used to indicate that the channel status is busy.
  • the NAV is the NAV set by the first AP.
  • the terminal device determines the NAV stored in itself, which is set by the first AP and indicates that the channel status is busy.
  • the terminal device Before receiving the trigger frame from the first network device, the terminal device may also receive a wireless frame from the first AP and set the NAV according to the wireless frame.
  • the terminal device When the preset conditions are met, the terminal device performs uplink transmission with the first network device, that is, ignores the NAV set by the first AP and does not need to pay attention to the channel status indicated by the NAV. Even if the channel status is busy, the terminal device can also use the transmission opportunity shared by the first AP to perform uplink transmission with the first network device. This is conducive to avoiding the problem that the terminal device cannot respond to the trigger frame sent by the first network device due to the NAV set by the first AP indicating that the channel is busy, which is conducive to improving resource utilization.
  • the steps shown in FIG. 2 are only examples and should not constitute any limitation to the embodiments of the present application.
  • the method shown in FIG. 2 may include more or fewer steps.
  • the terminal device may not execute S220 and directly execute S230, that is, the terminal device may first determine whether the preset conditions are met, and if the preset conditions are met, it may directly perform uplink transmission with the first network device.
  • the present application does not limit the order of the steps in the method shown in FIG. 2. For example, the terminal device may first execute S220 and then execute S210.
  • a first possible design is that the above-mentioned preset condition includes: receiving first indication information from the first network device, the first indication information is used to instruct the terminal device to ignore the NAV set by the first AP, or the first indication information is used to instruct the terminal device to ignore the NAV.
  • the first indication information may be carried in a trigger frame from the first network device.
  • the first indication information can instruct the terminal device to ignore the NAV set by the first AP, that is, even if the NAV set by the first AP indicates that the channel status is busy, the terminal device can respond to the trigger frame sent by the first network device and perform uplink transmission with the first network device.
  • the first indication information can also be used to instruct the terminal device to ignore NAV.
  • the terminal device can ignore not only the NAV set by the first AP, but also the NAV set by other APs or sites. Even if the current NAV indicates that the channel status is busy, the terminal device can respond to the trigger frame sent by the first network device and perform uplink transmission with the first network device.
  • a terminal device receives a trigger frame from a second AP, where the trigger frame is used to trigger the terminal device to perform uplink transmission.
  • the trigger frame carries first indication information, where the first indication information instructs the terminal device to ignore the NAV set by the first AP, or the first indication information instructs the terminal device to ignore the NAV.
  • the above-mentioned preset condition includes: the MAC address of the pre-stored TXOP holder is the same as the MAC address of the first AP.
  • the TXOP holder indicates who sets the TXOP, that is, who is using the channel for transmission.
  • the terminal device also needs to determine the MAC address of the first AP.
  • the trigger frame also carries the identifier of the first AP
  • the terminal device determines the MAC address of the first AP based on the identifier of the first AP and a pre-stored mapping relationship between the identifier of the first AP and the MAC address of the first AP.
  • the terminal device may pre-receive the mapping relationship between the identifier of the first AP and the MAC address of the first AP from the first network device and store it, so that after the terminal device receives the identifier of the first AP, it can determine the MAC address of the first AP based on the mapping relationship.
  • the second AP sends the mapping relationship between the identifier of the first AP and the MAC address of the first AP to the terminal device in advance, so that the terminal device stores the above mapping relationship.
  • the above mapping relationship can also be sent by the first AP to the terminal device, that is, the first AP sends the mapping relationship between the identifier of the first AP and the MAC address of the first AP to the terminal device in advance, so that the terminal device stores the above mapping relationship.
  • the first AP when the mapping relationship is sent by the first AP to the terminal device, the first AP also needs to send the mapping relationship between the identifier of the first AP and the MAC address of the first AP to the second AP, so that the second AP carries the identifier of the first AP in the trigger frame and sends it to the terminal device.
  • the terminal device After receiving the trigger frame from the second AP, the terminal device determines the MAC address of the first AP based on the identifier of the first AP carried in the trigger frame and the above mapping relationship. If the MAC address of the first AP is the same as the MAC address of the TXOP holder stored in itself, the NAV set by the first AP is ignored, and uplink transmission is performed with the second AP.
  • Table 1 is an example of a mapping relationship between the identifier of the first AP and the MAC address of the first AP.
  • the MAC address of the first AP corresponds to the identifier of the first AP one by one. It can be understood that the length of the identifier of the first AP can be shorter than the length of the MAC address of the first AP, so that the first network device sends the identifier of the first AP to the terminal device, which is conducive to saving signaling overhead.
  • mapping relationship is not limited to the form of a table, and may also be other data structures, such as an array, a queue or a stack, etc.
  • present application does not limit the specific form of the above mapping relationship.
  • the trigger frame may directly carry the MAC address of the first AP, so that after the terminal device receives the trigger frame, it can obtain the MAC address of the first AP.
  • the terminal device obtains a response frame sent by the first network device, the response frame carries the MAC address of the first AP, the response frame is used to respond to the transmission opportunity sharing frame sent by the first AP, and the transmission opportunity sharing frame is used to indicate the transmission opportunity shared by the first AP with the first network device; obtain the MAC address of the first AP from the response frame.
  • the response frame sent by the first network device carries the MAC address of the first AP.
  • the terminal device can monitor the response frame and obtain the MAC address of the first AP from the response frame.
  • the terminal device monitors a CTS frame sent by a second AP or station in the first network device to the first AP.
  • the receiver address (RA) field in the CTS frame carries the MAC address of the first AP. If the CTS frame is monitored, the terminal device obtains the MAC address of the first AP. MAC address, and then determine whether the MAC address is the same as the MAC address of the TXOP holder stored in itself. If they are the same, the terminal device can respond to the trigger frame and perform uplink transmission with the first network device.
  • RA receiver address
  • a third possible design is that the above-mentioned pre-conditions include: the above-mentioned NAV is an intra-BSS NAV.
  • the protocol stipulates that after the terminal device receives the trigger frame, if it needs to determine whether the channel status is busy or idle, it can only determine whether the basic NAV is not zero, and there is no need to determine whether the intra-BSS NAV is not zero. Therefore, in this application, the NAV set by the first AP is set to the intra-BSS NAV, and then after the terminal device receives the trigger frame, it can ignore the NAV set by the first AP and successfully perform uplink transmission with the first network device.
  • the terminal device can set the NAV in the following way: after the terminal device receives a wireless frame from the first AP, if the wireless frame instructs the terminal device to set the NAV, it further determines whether the first AP belongs to an AP in a pre-stored collaborative set. If so, the NAV is determined to be an intra-BSS NAV.
  • the collaboration set can be pre-indicated to the terminal device by the first network device, so that after the terminal device receives the wireless frame, it can determine whether the sender of the wireless frame belongs to the collaboration set.
  • the first network device can send the MAC address of the AP in the collaboration set to the terminal device in advance.
  • the MAC address of the AP in the above collaboration set can be carried in a beacon frame sent by the second AP in a broadcast form, and can also be carried in other unicast or multicast management frames, which is not limited in this application.
  • Fig. 3 is a schematic diagram of the transmission process of each frame provided in an embodiment of the present application.
  • the transmission sharing frame takes MU-RTS as an example
  • the response frame takes CTS as an example.
  • the first AP sends a MU-RTS frame, and accordingly, the station in the first network device receives the MU-RTS frame.
  • the station in the first network device After receiving the MU-RTS frame, the station in the first network device sends a CTS frame and instructs the second AP in the first network device to share the transmission opportunity with the second AP, and then the second AP sends a trigger frame to the terminal device to trigger the terminal device to perform uplink transmission.
  • the terminal device After receiving the trigger frame, the terminal device sends uplink data if the preset conditions are met.
  • the first AP sends a MU-RTS frame, and accordingly, the second AP in the first network device receives the MU-RTS frame.
  • the second AP in the first network device After receiving the MU-RTS frame, the second AP in the first network device sends a CTS frame and sends a trigger frame to the terminal device to trigger the terminal device to perform uplink transmission.
  • the terminal device After receiving the trigger frame, the terminal device sends uplink data if the preset conditions are met.
  • the terminal device after receiving the trigger frame from the first network device, the terminal device obtains the NAV from the first AP. Even if the NAV is used to indicate that the channel status is busy, as long as the preset conditions are met, the terminal device can perform uplink transmission with the first network device. In other words, the terminal device can ignore the NAV set by the first AP and successfully respond to the trigger frame from the first network device. In this way, the terminal device successfully performs uplink transmission with the first network device, which is conducive to improving resource utilization.
  • FIG. 4 is a schematic block diagram of a communication device 400 provided in an embodiment of the present application.
  • the above-mentioned communication device 400 can be used to implement the functions of the terminal device in the method embodiment shown in Figure 2, or the above-mentioned device 400 may include a module for implementing any function or operation of the terminal device in the method embodiment shown in Figure 2, and the module can be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • the transceiver unit 410 can be used to receive a trigger frame from a first network device, the trigger frame is used to trigger the apparatus 400 to perform uplink transmission, and the first network device is a network device that shares a transmission opportunity in the collaborative transmission; the determination unit 420 can be used to determine NAV, NAV is used to indicate that the channel status is busy. The NAV is set by the first AP, and the first AP is the AP that shares the transmission opportunity with the first network device in collaborative transmission; the processing unit 430 can be used to perform uplink transmission with the first network device when preset conditions are met.
  • the above-mentioned device 400 can be used to implement the function of the first network device in the method embodiment shown in Figure 2 above, or the above-mentioned device 400 may include a module for implementing any function or operation of the first network device in the method embodiment shown in Figure 2 above, and the module can be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • the transceiver unit 410 can be used to send a trigger frame to the terminal device, and the trigger frame is used to trigger the terminal device to perform uplink transmission.
  • the trigger frame carries first indication information, and the first indication information is used to instruct the terminal device to ignore the NAV set by the first AP.
  • the device 400 is a device that shares transmission opportunities in collaborative transmission, and the first AP is an AP that shares transmission opportunities in collaborative transmission; the transceiver unit 410 can also be used to receive uplink data from the terminal device.
  • the transceiver unit 410 can be used to send a trigger frame to the terminal device, where the trigger frame is used to trigger the terminal device to perform uplink transmission.
  • the trigger frame carries an identifier of the first AP, and the identifier of the first AP is used by the terminal device to determine that the NAV stored in itself is the NAV set by the first AP, and the first AP is an AP that shares transmission opportunities in collaborative transmission; the transceiver unit 410 can also be used to receive uplink data from the terminal device.
  • the above-mentioned device 400 can be used to implement the function of the first AP in the method embodiment shown in Figure 2, or the above-mentioned device 400 can include a module for implementing any function or operation of the first AP in the method embodiment shown in Figure 2, and the module can be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • the transceiver unit 410 can be used to send a transmission opportunity sharing frame to the first network device, and the transmission opportunity sharing frame is used to instruct the device 400 to share the transmission opportunity with the second AP in the first network device.
  • the first network device is a network device that shares the transmission opportunity in the collaborative transmission
  • the device 400 is a device that shares the transmission opportunity in the collaborative transmission; the transceiver unit 410 can also be used to receive a response frame from the first network device.
  • transceiver unit 410 the determination unit 420 and the processing unit 430 can be directly obtained by referring to the relevant description in the above method embodiment, which will not be repeated here.
  • each functional unit in each embodiment of the present application may be integrated into a processor, or may exist physically separately, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional modules.
  • FIG. 5 is another schematic block diagram of a communication device 500 provided in an embodiment of the present application.
  • the communication device 500 can be used to implement the method described in the embodiment shown in FIG3.
  • the device 500 can be a chip system.
  • the chip system can be composed of a chip, or can include a chip and other discrete devices.
  • the apparatus 500 may include at least one processor 510 for implementing the method described in the embodiment shown in FIG. 2 .
  • the processor 510 may be configured to receive a trigger frame from a first network device, the trigger frame being used to trigger the apparatus 400 to perform uplink transmission, the first network device being a network device that shares a transmission opportunity in collaborative transmission; determining NAV, NAV is used to indicate that the channel state is busy.
  • the NAV is set by the first AP, which is the AP that shares the transmission opportunity with the first network device in the collaborative transmission.
  • uplink transmission is performed with the first network device.
  • the device 500 may also include at least one memory 520, which may be used to store program instructions and/or data.
  • the memory 520 is coupled to the processor 510.
  • the coupling in the embodiment of the present application is an indirect coupling or communication connection between devices, units or modules, which may be electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • the processor 510 may operate in conjunction with the memory 520.
  • the processor 510 may execute program instructions stored in the memory 520. At least one of the at least one memory may be included in the processor.
  • the device 500 may also include a communication interface 530 for communicating with other devices via a transmission medium, so that the device 500 can communicate with other devices.
  • the communication interface 530 may be, for example, a transceiver, an interface, a bus, a circuit, or a device capable of implementing a transceiver function.
  • the processor 510 may use the communication interface 530 to send and receive data and/or information, and is used to implement the method described in the embodiment shown in FIG. 2 .
  • the specific connection medium between the processor 510, the memory 520 and the communication interface 530 is not limited in the embodiment of the present application.
  • the processor 510, the memory 520 and the communication interface 530 are connected via a bus 540.
  • the bus 540 is represented by a bold line in FIG. 5 , and the connection mode between other components is only for schematic illustration and is not intended to be limiting.
  • the bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, only one bold line is used in FIG. 5 , but it does not mean that there is only one bus or one type of bus.
  • FIG6 is a schematic diagram of the structure of a terminal device 600 provided in an embodiment of the present application.
  • the terminal device 600 can be used to implement the method described in the embodiment shown in FIG2 , and the terminal device 600 can be applied to the communication system 100 shown in FIG1 .
  • the terminal device 600 includes a processor 601 and a transceiver 602 .
  • the terminal device 600 further includes a memory 603.
  • the processor 601, the transceiver 602 and the memory 603 can communicate with each other through an internal connection path to transmit control and/or data signals, the memory 603 is used to store a computer program, and the processor 601 is used to call and run the computer program from the memory 603 to control the transceiver 602 to send and receive signals.
  • the terminal device 600 may further include an antenna 604 for transmitting the uplink data or uplink control signaling output by the transceiver 602 through a wireless signal.
  • the terminal device 600 may further include a Wi-Fi module 611 for accessing a wireless network.
  • the processor 601 and the memory 603 may be combined into a processing device, and the processor 601 is used to execute the program code stored in the memory 603 to implement the above functions.
  • the memory 603 may also be integrated into the processor 601, or independent of the processor 601.
  • the processor 601 may correspond to the processing unit 430 in FIG. 4 or the processor 510 in FIG. 5.
  • the transceiver 602 may correspond to the transceiver unit 410 in FIG. 4 or the communication interface 530 in FIG. 5 .
  • the transceiver 602 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). The receiver is used to receive signals, and the transmitter is used to transmit signals.
  • the terminal device 600 may further include a power supply 605 for providing power to various devices or circuits in the terminal device 600 .
  • the terminal device 600 may also include one or more of an input unit 606, a display unit 607, an audio circuit 608, a camera 609 and a sensor 610, and the audio circuit 608 may also include a speaker 608a, a microphone 608b, etc.
  • terminal device 600 shown in FIG6 can implement various processes related to the terminal device in the method embodiment shown in FIG2.
  • the operations and/or functions of each module in the terminal device 600 are respectively to implement the corresponding processes in the above method embodiment.
  • the present application also provides a chip system, which includes at least one processor for implementing the method described in the embodiment shown in FIG. 2 above.
  • the chip system also includes a memory, which is used to store program instructions and data, and the memory is located inside or outside the processor.
  • the chip system may be composed of the chip, or may include the chip and other discrete devices.
  • the present application also provides a chip, which includes a processor and a communication interface.
  • the processor reads instructions stored in a memory through the communication interface to execute the method executed by the first network device in the embodiment shown in Figure 2, or the method executed by the terminal device, or the method executed by the first AP.
  • the present application also provides a computer program product, which includes: a computer program (also referred to as code, or instructions), which, when executed, enables the computer to execute the method executed by the first network device in the embodiment shown in Figure 2, or the method executed by the terminal device, or the method executed by the first AP.
  • a computer program also referred to as code, or instructions
  • the present application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program (also referred to as code or instruction).
  • a computer program also referred to as code or instruction.
  • the computer program executes the method executed by the first network device, the method executed by the terminal device, or the method executed by the first AP in the embodiment shown in FIG. 2 .
  • the present application also provides a communication system, including the terminal device, the first AP and the first network device as mentioned above.
  • the processor in the embodiment of the present application can be an integrated circuit chip with signal processing capabilities.
  • each step of the above method embodiment can be completed by the hardware integrated logic circuit in the processor or the instruction in the form of software.
  • the above processor can be a general processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (application specific integrated circuit, ASIC), a field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general processor can be a microprocessor or the processor can also be any conventional processor.
  • the steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor can be combined to perform.
  • the software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory.
  • the volatile memory may be a random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • DDR SDRAM double data rate synchronous dynamic random access memory
  • EDRAM enhanced synchronous dynamic random access memory
  • SRAM static random access memory
  • ESDRAM synchronous dynamic random access memory
  • SLDRAM synchronous link dynamic random access memory
  • direct rambus RAM direct rambus RAM
  • unit may be used to represent a computer-related entity, hardware, firmware, a combination of hardware and software, software, or software in execution.
  • the device embodiments described above are merely schematic, for example, the division of the modules is only a logical function division, and there may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or modules, which can be electrical, mechanical or other forms.
  • modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, they may be located in one place or distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional module in each embodiment of the present application may be integrated into one processing module, or each module may exist physically separately, or two or more units may be integrated into one module.
  • each functional module can be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software When implemented by software, it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions (programs). When the computer program instructions (programs) are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated.
  • the available medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a digital versatile disk (DVD)), or a semiconductor medium (e.g., a solid state disk (SSD)), etc.
  • a magnetic medium e.g., a floppy disk, a hard disk, a magnetic tape
  • an optical medium e.g., a digital versatile disk (DVD)
  • DVD digital versatile disk
  • SSD solid state disk
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, ROM, RAM, magnetic disk or optical disk and other media that can store program codes.

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Abstract

提供了一种协作传输方法及相关装置，该方法适用于支持IEEE 802.11ax下一代Wi-Fi协议(如802.11be协议)，或802.11be下一代Wi-Fi协议等协议的无线局域网系统，还可以适用于基于UWB技术的无线个人局域网系统、感知系统等。该方法包括：终端设备接收来自第一网络设备的触发帧后，确定NAV，该NAV用于指示信道状态为忙碌，该NAV是第一AP设置的，在满足预设条件的情况下，与第一网络设备进行上行传输，其中，第一AP是分享传输机会的AP，第一网络设备是被分享传输机会的网络设备，终端设备忽略第一AP设置的NAV，利用第一AP分享的传输机会进行上行传输，有利于提高资源利用率。

Description

一种协作传输方法及相关装置
本申请要求于2022年10月27日提交中国国家知识产权局、申请号为202211330322.3、申请名称为“一种协作传输方法及相关装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，尤其涉及一种协作传输方法及相关装置。
背景技术
随着互联网技术的发展，网络设备的部署变得越来越密集，进而加剧了小区间的干扰。通过网络设备之间的协作可以降低小区间干扰。示例性地，网络设备#1获取到传输机会(transmit opportunity，TXOP)之后，如果未能使用完其TXOP，可以将剩余的TXOP中的时间分享给其他网络设备(以网络设备#2为例)进行传输。
当网络设备#1将传输机会中的一部分时间分享给网络设备#2时，网络设备#2向其关联的终端设备发送触发帧，以触发终端设备进行上行传输，但终端设备可能会因为被网络设备#1设置了网络配置向量(net allocation vector，NAV)，而无法响应网络设备#2发送的触发帧，也即无法进行上行传输，这样一来，这段时间内传输资源将会被闲置，资源利用率较低。
发明内容
本申请提供了一种协作传输方法及相关装置，以期提高资源利用率。
第一方面，本申请提供了一种协作传输方法，该方法可以由终端设备执行，或者，也可以由配置在终端设备中的部件(如芯片、芯片系统等)执行，或者，还可以由能够实现全部或部分终端设备功能的逻辑模块或软件实现，本申请对此不作限定。
需要说明的是，在本申请中，第一网络设备是协作传输中被分享传输机会的网络设备，第二网络设备是向第一网络设备分享传输机会的网络设备，在下文的描述中，第二网络设备以是第一无线接入点(access point，AP)为例，第一网络设备以包括第二AP，或包括第二AP和与第二AP共址的站点(station)为例，对本申请提供的协作传输方法进行描述。
应理解，第一网络设备和第二网络设备也可以是其他类型的网络设备，本申请对此不作限定。
示例性地，该方法包括：接收来自第一网络设备的触发帧，该触发帧用于触发终端设备进行上行传输，上述第一网络设备是协作传输中被分享传输机会的网络设备；确定NAV，该NAV用于指示信道状态为忙碌，该NAV是第一AP设置的，第一AP是协作传输中向第一网络设备分享传输机会的AP；在满足预设条件的情况下，与第一网络设备进行上行传输。
在上述技术方案中，终端设备在接收到来自第一网络设备的触发帧后，确定第一AP 设置的NAV，即使NAV用于指示信道状态为忙碌，只要满足预设条件，终端设备便可以与第一网络设备进行上行传输，换言之，终端设备可以忽略第一AP设置的NAV，成功地响应来自第一网络设备的触发帧，这样一来，终端设备成功地与第一网络设备进行上行传输，进而有利于提高资源的利用率。
上述预设条件的三种可能的设计如下：
第一种可能的设计是，上述预设条件包括：接收到来自第一网络设备的第一指示信息，该第一指示信息用于指示终端设备忽略第一AP设置的NAV，或，该第一指示信息用于指示终端设备忽略NAV。
其中，上述第一指示信息可以携带在来自第一网络设备的触发帧中。
第一指示信息可以指示终端设备忽略第一AP设置的NAV，也即，即使第一AP设置的NAV指示信道状态为忙碌，终端设备也可以响应第一网络设备发送的触发帧，与第一网络设备进行上行传输。
第一指示信息还可以用于指示终端设备忽略NAV，在这种情况下，终端设备不仅可以忽略第一AP设置的NAV，还可以忽略其他AP或站点设置的NAV。即使当前NAV指示信道状态为忙碌，终端设备也可以响应第一网络设备发送的触发帧，与第一网络设备进行上行传输。
第二种可能的设计是，上述预设条件包括：预存的传输机会持有者(TXOP holder)的媒介接入控制(medium access control，MAC)地址和第一AP的MAC地址相同。
在这种可能的设计中，终端设备还需要确定第一AP的MAC地址。
一种可能的实现方式是，上述触发帧中还携带有第一AP的标识，终端设备基于第一AP的标识和预存的第一AP的标识与第一AP的MAC地址的映射关系，确定第一AP的MAC地址。示例性地，终端设备可以预先接收来自第一网络设备的第一AP的标识与第一AP的MAC地址的映射关系，并将其存储，以便于终端设备接收到第一AP的标识后，可以基于上述映射关系，确定第一AP的MAC地址。
另一种可能的实现方式是，终端设备获取第一网络设备发送的应答帧，该应答帧中携带第一AP的MAC地址，该应答帧用于响应第一AP发送的传输机会共享帧，该传输机会共享帧用于指示第一AP向第一网络设备分享传输机会；从应答帧中获取第一AP的MAC地址。
第一网络设备发送的用于响应第一AP发送的传输机会共享帧中携带第一AP的MAC地址，终端设备可以监听上述应答帧，从上述应答帧中获取到第一AP的MAC地址。
可选地，第一网络设备包括第二AP，或，第一网络设备包括第二AP和站点。
第一网络设备包括第二AP的情况下，第一AP可以向第二AP发送传输机会共享帧，第二AP向第一AP发送应答帧；第一网络设备包括第二AP和站点的情况下，第一AP可以向第二AP发送传输机会共享帧，第二AP向第一AP发送应答帧，或者，第一AP可以向站点发送传输机会共享帧，站点向第一AP发送应答帧。
可选地，上述传输机会共享帧为多用户请求发送(multi-user request to send，MU-RTS)帧，该MU-RTS帧中包含预设字段，该预设字段用于指示第一AP向第一网络设备中的第二AP分享传输机会。
第一AP向第一网络设备分享传输机会，一种可能的情况是，该传输机会可以用于第 二AP和与第二AP关联的终端设备进行通信；另一种可能的情况是，该传输机会可以用于第二AP和与第二AP关联的终端设备进行通信，也可以用于第一网络设备内的站点与终端设备进行通信，或，第一网络设备内的站点与第一AP进行通信。在本申请中，上述预设字段可以用于指示第一AP向第一网络设备中的第二AP分享传输机会，也即，该传输机会可以用于第二AP和与第二AP关联的终端设备进行通信。
第三种可能的设计是，上述预设条件包括：上述NAV是基本服务集内的(basic service set，intra-BSS)NAV。
可以理解，协议规定，终端设备接收到触发帧后，若需判断信道状态是忙碌还是空闲，则可以只判断基本(basic)NAV是否不为零，无需判断intra-BSS NAV是否不为零。因此，在本申请中，第一AP设置的NAV设置成intra-BSS NAV，则终端设备接收到触发帧后，便可以忽略第一AP设置的NAV，成功地与第一网络设备进行上行传输。
这种设计下，终端设备可以通过以下方式设置NAV：终端设备接收到来自第一AP的无线帧后，若该无线帧指示终端设备设置NAV，则进一步判断第一AP是否属于预存的协作集合中的AP，若属于，则将NAV确定为intra-BSS NAV。
可选地，协作集合可以由第一网络设备预先发送给终端设备，以便于终端设备接收到无线帧后，确定无线帧的发送端是否属于协作集合。
第二方面，本申请提供了一种协作传输方法，该方法可以由第一网络设备执行，或者，也可以由配置在第一网络设备中的部件(如芯片、芯片系统等)执行，或者，还可以由能够实现全部或部分第一网络设备功能的逻辑模块或软件实现，本申请对此不作限定。
示例性地，该方法包括：向终端设备发送触发帧，该触发帧用于触发终端设备进行上行传输，该触发帧中携带第一指示信息，该第一指示信息用于指示终端设备忽略第一AP设置的NAV，第一网络设备是协作传输中被分享传输机会的网络设备，第一AP是协作传输中分享传输机会的AP；接收来自终端设备的上行数据。
在上述技术方案中，第一网络设备向终端设备发送触发帧，以触发终端设备进行上行传输，该触发帧中携带第一指示信息，以指示终端设备忽略第一AP设置的NAV，也即，即使第一AP设置的NAV指示信道状态为忙碌，终端设备也可以响应第一网络设备发送的触发帧，与第一网络设备进行上行传输，这样一来，终端设备可以利用第一AP分享的这段时间与第一网络设备进行上行传输，有利于提高资源利用率。
可选地，第一指示信息还用于指示终端设备忽略NAV。
第一指示信息还可以用于指示终端设备忽略NAV，在这种情况下，终端设备不仅可以忽略第一AP设置的NAV，还可以忽略其他AP或站点设置的NAV。这样即使当前NAV指示信道状态为忙碌，终端设备也可以响应第一网络设备发送的触发帧，与第一网络设备进行上行传输，有利于提高资源利用率。
第三方面，本申请提供了一种协作传输方法，该方法可以由第一网络设备执行，或者，也可以由配置在第一网络设备中的部件(如芯片、芯片系统等)执行，或者，还可以由能够实现全部或部分第一网络设备功能的逻辑模块或软件实现，本申请对此不作限定。
示例性地，该方法包括：向终端设备发送触发帧，该触发帧用于触发终端设备进行上行传输，该触发帧中携带第一AP的标识，第一AP的标识用于终端设备确定自身存储的NAV为第一AP设置的NAV，第一网络设备是协作传输中被分享传输机会的网络设备，第 一AP是协作传输中分享传输机会的AP；接收来自终端设备的上行数据。
在上述技术方案中，第一网络设备向终端设备发送触发帧，以触发终端设备进行上行传输，该触发帧中携带第一AP的标识，第一AP的标识用于终端设备确定自身存储的NAV为第一AP设置的NAV，也就是说，在终端设备自身存储的NAV为第一AP设置的NAV的情况下，终端设备可以忽略该NAV，响应第一网络设备发送的触发帧，与第一网络设备进行上行传输，这样一来，终端设备可以利用第一AP分享的这段时间与第一网络设备进行上行传输，有利于提高资源的利用率。
第四方面，本申请提供了一种协作传输方法，该方法可以由第一AP执行，或者，也可以由配置在第一AP中的部件(如芯片、芯片系统等)执行，或者，还可以由能够实现全部或部分第一AP功能的逻辑模块或软件实现，本申请对此不作限定。
示例性地，该方法包括：向第一网络设备发送传输机会共享帧，该传输机会共享帧用于指示第一AP向第一网络设备中的第二AP分享传输机会，第一网络设备是协作传输中被分享传输机会的网络设备，第一AP是协作传输中分享传输机会的AP；接收来自第一网络设备的应答帧。
在上述技术方案中，第一AP可以向第一网络设备发送传输机会共享帧，以指示第一AP向第一网络设备中的第二AP分享传输机会，也即，第一网络设备中的第二AP可以基于第一AP分享的传输机会，与其关联的终端设备进行通信，这样一来，第二AP可以较快地获得传输资源进行传输，有利于降低其通信时延。
第五方面，本申请提供了一种通信装置，可以实现上述第一方面至第四方面以及第一方面至第四方面任一种可能的实现方式中的方法。该装置包括用于执行上述方法的相应的单元。该装置包括的单元可以通过软件和/或硬件方式实现。
第六方面，本申请提供了一种通信装置，该装置包括处理器。该处理器与存储器耦合，可用于执行存储器中的计算机程序，以实现上述第一方面至第四方面以及第一方面至第四方面任一种可能的实现方式中的方法。
可选地，该装置还包括存储器。
可选地，该装置还包括通信接口，处理器与通信接口耦合。
第七方面，本申请提供了一种计算机可读存储介质，该计算机可读存储介质中存储有计算机程序或指令，当该计算机程序或指令被执行时，以实现上述第一方面至第四方面以及第一方面至第四方面任一种可能的实现方式中的方法。
第八方面，本申请提供了一种计算机程序产品，该计算机程序产品包括指令，当该指令被运行时，以实现上述第一方面至第四方面以及第一方面至第四方面任一种可能的实现方式中的方法。
第九方面，本申请提供了一种芯片系统，该芯片系统包括至少一个处理器，用于支持实现上述第一方面至第四方面以及第一方面至第四方面任一种可能的实现方式中所涉及的功能，例如，接收或处理上述方法中所涉及的数据等。
在一种可能的设计中，所述芯片系统还包括存储器，所述存储器用于保存程序指令和数据，存储器位于处理器之内或处理器之外。
该芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
第十方面，本申请还提供了一种芯片，该芯片包括处理器与通信接口，该处理器通过 通信接口读取存储器上存储的指令，执行上述第一方面至第四方面以及第一方面至第四方面任一种可能的实现方式中的方法。
应当理解的是，本申请的第五方面至第十方面与本申请的第一方面至第四方面的技术方案相对应，各方面及对应的可行实施方式所取得的有益效果相似，不再赘述。
附图说明
图1是适用于本申请实施例提供的方法的通信系统的网络架构示意图；
图2是本申请实施例提供的协作传输方法的示意性流程图；
图3是本申请实施例提供的各个帧的发送过程的示意图；
图4是本申请实施例提供的通信装置的示意性框图；
图5是本申请实施例提供的通信装置的又一示意性框图；
图6是本申请实施例提供的终端设备的结构示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
为便于理解本申请实施例，首先做出如下说明：
第一，为了便于清楚描述本申请实施例的技术方案，在本申请的实施例中，采用了“第一”、“第二”等字样对功能和作用基本相同的相同项或相似项进行区分。例如，第一AP和第二AP仅仅是为了区分不同的AP，并不对其先后顺序进行限定。本领域技术人员可以理解“第一”、“第二”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。
第二，本申请实施例中，“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系，但并不排除表示前后关联对象是一种“和”的关系的情况，具体表示的含义可以结合上下文进行理解。“以下一项(个)或多项(个)”或其类似表达，是指的这些项(个)中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b，或c中的一项或多项(个)，可以表示：a，b，c；a和b；a和c；b和c；或a和b和c。其中a，b，c可以是单个，也可以是多个。
第三，本申请实施例中，“示例性地”、“例如”等词用于表示作例子、例证或说明。本申请实施例中被描述为“示例性地”或者“例如”的任何实施例或设计方案不应被解释为比其他实施例或设计方案更优选或更具优势。确切而言，使用“示例性地”或者“例如”等词旨在以具体方式呈现相关概念。
本申请提供的技术方案可以应用于无线局域网(wireless local area network，WLAN)系统、基于超宽带(ultra wide band，UWB)技术的无线个人局域网系统、感知(sensing)系统，还可以应用于全球移动通讯(global system for mobile communications，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(wideband code division multiple access，WCDMA)系统、通用分组无线业务(general packet radio service，GPRS)、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency  division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、侧链(sidelink)通信系统，通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、第五代(5th generation，5G)移动通信系统或新无线接入技术(new radio access technology，NR)。其中，5G移动通信系统可以包括非独立组网(non-standalone，NSA)和/或独立组网(standalone，SA)。本申请提供的技术方案还可以应用于未来的通信系统，如第六代(6th Generation，6G)移动通信系统等。本申请对此不作限定。
在本申请中，网络设备可以是任意一种具有无线收发功能的设备。网络设备包括但不限于：演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved Node B，或home Node B，HNB)、基带单元(baseband unit，BBU)、无线保真(wireless fidelity，Wi-Fi)系统中的AP、无线中继节点、无线回传节点、传输点(transmission point，TP)或者发送接收点(transmission and reception point，TRP)等，还可以为5G(如NR)系统中的gNB或传输点(TRP或TP)，或者，5G系统中的基站的一个或一组(包括多个天线面板)天线面板，或者，还可以为构成gNB或传输点的网络节点，如基带单元(BBU)，或，分布式单元(distributed unit，DU)等。
可选地，第一网络设备和第二网络设备例如可以是如前所述的网络设备。另外，在本申请中，网络设备可以包括AP和与其共址的站点，其中，共址，可以理解为，AP和站点是网络设备中的两个逻辑实体，其部署在同一个物理设备中。
在本申请中，终端设备也可以称为用户设备(user equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。
终端设备可以是一种向用户提供语音/数据连通性的设备，例如，具有无线连接功能的手持式设备、车载设备等。目前，一些终端设备的举例可以为：手机(mobile phone)、平板电脑(pad)、带无线收发功能的电脑(如笔记本电脑、掌上电脑等)、移动互联网设备(mobile internet device，MID)、虚拟现实(virtual reality，VR)设备、增强现实(augmented reality，AR)设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、无人机、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等。
其中，可穿戴设备也可以称为穿戴式智能设备，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿 戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能首饰等。
此外，终端设备还可以是物联网(internet of things，IoT)系统中的终端设备。IoT是未来信息技术发展的重要组成部分，其主要技术特点是将物品通过通信技术与网络连接，从而实现人机互连，物物互连的智能化网络。IoT技术可以通过例如窄带(narrow band，NB)技术，做到海量连接，深度覆盖，终端省电。
应理解，本申请对于第一网络设备、第二网络设备、终端设备的具体形式均不作限定。
还应理解，本申请提供的方法适用于电气与电子工程师协会(institute of electrical and electronics engineers，IEEE)802.11ax下一代Wi-Fi协议，如下一代标准IEEE802.11be(又称为Wi-Fi 7、或超高吞吐量(extremely high throughput，EHT协议))，还可以适用于802.11be下一代Wi-Fi协议等，如Wi-Fi 8、UHR、或Wi-Fi AI，本申请对此不作限定。
为了更好地理解本申请实施例提供的协作传输方法，首先对本申请中涉及到的术语作简单说明。
1、时分多址(time division multiple access，TDMA)：是指各设备采用相同的频率，在时间上轮流占用信道进行传输。在本申请中，网络设备之间可以基于TDMA进行协作传输(也可以称为协调传输、联合传输等)。示例性地，网络设备#1获取到TXOP之后，如果未能使用完其TXOP，可以将剩余的TXOP中的时间分享给其他网络设备(以网络设备#2为例)进行传输。例如，以网络设备以AP为例，当AP#1获取到TXOP之后，如果未能使用完其TXOP，可以将剩余的TXOP中的时间分享给其他AP进行传输。其中，分享传输机会的AP可称为分享(sharing)AP，其他被分享传输机会的AP可称为被分享(shared)AP。
2、TXOP：是无线信道接入的基本单元，TXOP是指一段时间间隔，当某一网络设备获取到TXOP后，在该段时间间隔内，可以使用信道传输一个或多个数据帧。
3、NAV：是指一段时间间隔，在这段时间间隔内，终端设备会认为信道状态为忙碌，从而不进行信道接入和数据传输。在本申请实施例中，某一终端设备监听到无线帧后，如果该无线帧中携带有NAV的相关信息，则更新自身存储的NAV，更新后的NAV为自身存储的NAV和无线帧中携带的NAV的最大值。
为便于理解本申请实施例，下面将结合图1详细说明适用于本申请实施例的通信系统。
图1是适用于本申请实施例提供的方法的通信系统100的网络架构示意图。
如图1所示，该通信系统100可以包括至少两个网络设备，如图1中所示的网络设备110、网络设备120，每个网络设备可以为特定的地理区域提供通信覆盖，并且可以与位于该覆盖区域(小区)内的终端设备进行无线链路通信，如图1中所示的网络设备110可以与终端设备130进行无线链路通信，网络设备120可以与终端设备140进行无线链路通信。
可选地，上述终端设备130和终端设备140可以是移动的或固定的，本申请对此不作限定。
可选地，该通信系统100所示的通信系统可以包括更多的网络设备，以及每个网络设备的覆盖范围内可以包括其它数量的终端设备，本申请实施例对此不做限定。
在图1所示的通信系统中，网络设备110和网络设备120可以进行协作传输，以降低小区间干扰。示例性地，当网络设备110获取TXOP之后，进行数据传输，未能使用完其TXOP时，可以将剩余的TXOP中的时间分享给网络设备120进行使用。当网络设备110将TXOP中的一部分时间分享给网络设备120时，网络设备120向其关联的终端设备140发送触发帧，以触发终端设备140进行上行传输，但终端设备140可能会因为被网络设备110设置了NAV，而无法响应网络设备120发送的触发帧，也即无法进行上行传输，这样一来，这段时间内传输资源将会被闲置，资源利用率较低。
为提高资源利用率，本申请提供了一种协作传输方法，该方法包括：终端设备在接收到来自第一网络设备的触发帧后，确定第二网络设备设置的NAV，该NAV用于指示信道状态为忙碌，在满足预设条件的情况下，与第一网络设备进行上行传输，换言之，终端设备可以忽略第二网络设备设置的NAV，无需理会第二网络设备设置的NAV指示的信道状态，直接响应触发帧，这样一来，终端设备成功地与第一网络设备进行上行传输，有利于提高资源利用率。
应理解，下文以第一网络设备是协作传输中被分享传输机会的网络设备，第二网络设备是向第一网络设备分享上述传输机会的网络设备的场景为例进行描述，但不应对本申请实施例构成任何限定。例如，本申请提供的方法还可以适用于其他的场景中，如第二网络设备和第一网络设备并未分享传输机会的场景中，终端设备接收到来自第一网络设备的触发帧后，确定NAV，该NAV指示信道忙碌，在满足预设条件的情况下，与第一网络设备进行上行传输，也即忽略第二网络设备设置的NAV，成功地响应来自第一网络设备的触发帧。更详细的描述可参看下文所示的实施例。
还应理解，在下文的描述中，第二网络设备以第一AP为例，第一网络设备以包括第二AP，或包括第二AP和与第二AP共址的站点为例，对本申请提供的协作传输方法进行详细描述。第一网络设备和第二网络设备也可以是如前所述的其他类型的网络设备，本申请对此不作限定。
下面将结合附图，详细说明本申请实施例提供的协作传输方法。应理解，下文所示的实施例从第一网络设备与终端设备交互的角度来描述了该方法，但不应对该方法的执行主体构成任何限定。只要能够通过运行记录有本申请实施例提供的方法的代码的程序，便可执行本申请实施例提供的方法。例如，终端设备也可以替换为配置在终端设备中的部件(如，芯片、芯片系统等)，或其他能够调用程序并执行程序的功能模块，第一网络设备也可以替换为配置在第一网络设备中的部件(如，芯片、芯片系统等)，或其他能够调用程序并执行程序的功能模块。本申请实施例对此不作限定。
图2是本申请实施例提供的协作传输方法200的示意性流程图。图2所示的协作传输方法200可以包括S210至S230。下面详细说明方法200中的各个步骤。
S210、第一网络设备向终端设备发送触发帧，该触发帧用于触发终端设备进行上行传输。相应地，终端设备接收来自第一网络设备的触发帧。
其中，第一网络设备是被分享传输机会的网络设备，第一网络设备可以包括第二AP，或包括第二AP和站点。终端设备是与第一网络设备通信连接的终端设备。
可选地，上述触发帧可以是基本触发帧(basic trigger frame)，用于触发终端设备进行上行传输。上述触发帧也可以是MU-RTS触发帧，用于确定终端设备是否信道空闲。上述触发帧还可以是多用户带宽查询报告轮询(MU bandwidth query report poll，MU-BQRP)触发帧，用于询问终端设备的空闲的信道。
示例性地，第一网络设备中的第二AP向终端设备发送触发帧，以触发终端设备进行上行传输。相应地，终端设备接收来自第二AP的触发帧。
可选地，第一网络设备在向终端设备发送触发帧之前，上述方法还包括：第一网络设备接收来自第一AP的传输机会共享帧，该传输机会共享帧用于指示第一AP向第一网络设备分享传输机会；第一网络设备向第一AP发送应答帧，该应答帧用于响应上述传输机会共享帧。
在本申请中，第一AP向第一网络设备分享传输机会是指第一AP将传输机会中的一段时间分享给第一网络设备进行传输。
一种可能的情况是，第一网络设备包括第二AP，这种情况下，第一AP向第二AP发送传输机会共享帧，该传输机会共享帧用于指示第一AP将传输机会分享给第二AP进行传输。相应地，第二AP向第一AP发送应答帧。
另一种可能的情况是，第一网络设备包括第二AP和与其共址的站点。这种情况下，第一AP可以向第二AP发送传输机会共享帧，该传输机会共享帧用于指示第一AP将传输机会分享给第二AP进行传输。相应地，第二AP向第一AP发送应答帧。第一AP也可以向站点发送传输机会共享帧，该传输机会共享帧用于指示第一AP将传输机会分享给第二AP进行传输。相应地，站点向第一AP发送应答帧。其中，第二AP与站点共址，可以理解为，第二AP和站点是第一网络设备中的两个逻辑实体，其部署在同一个物理设备中，这种情况下，站点可以通知第二AP，第一AP将其传输机会分享给第二AP，以使第二AP向终端设备发送触发帧。
可选地，上述传输机会共享帧可以是MU-RTS帧，上述应答帧可以是清除发送(clear to send，CTS)帧。
可以理解，第一AP向第一网络设备分享传输机会，一种可能的情况是，该传输机会可以用于第二AP和与第二AP关联的终端设备进行通信；另一种可能的情况是，该传输机会可以用于第二AP和与第二AP关联的终端设备进行通信，也可以用于第一网络设备内的站点与终端设备进行通信，或，第一网络设备内的站点与第一AP进行通信。
在本申请中，上述MU-RTS帧中可以包含预设字段，以用于指示第一AP向第一网络设备中的第二AP分享传输机会，也即，该传输机会可以用于第二AP和与第二AP关联的终端设备进行通信。
以“Triggered TXOP Sharing Mode”字段为例，例如，该字段取值为3表示第一AP向第一网络设备中的第二AP分享传输机会，也即，该传输机会可以用于第二AP和与第二AP关联的终端设备进行通信。
又例如，该字段取值为2表示第一AP向第一网络设备中的第二AP分享传输机会， 还表示第一AP向第一网络设备中的站点分享传输机会，也即，该传输机会可以用于第二AP和与第二AP关联的终端设备进行通信，也可以用于第一网络设备内的站点与终端设备进行通信，或，第一网络设备内的站点与第一AP进行通信。其中，第一网络设备如何分配该传输机会给第二AP和站点，本申请不作限定。例如，传输机会中的一段时间可以用于第二AP和与第二AP关联的终端设备进行通信，另一段时间可以用于第一网络设备内的站点与终端设备进行通信，或，第一网络设备内的站点与第一AP进行通信。
S220、终端设备确定NAV，该NAV用于指示信道状态为忙碌。
其中，上述NAV是第一AP设置的NAV。示例性地，终端设备接收到来自第一网络设备的触发帧后，确定自身存储的NAV，该NAV是由第一AP设置的，该NAV指示信道状态为忙碌。
终端设备在接收来自第一网络设备的触发帧之前，还可以接收来自第一AP的无线帧，并根据该无线帧设置NAV。
S230、在满足预设条件的情况下，与第一网络设备进行上行传输。
终端设备在满足预设条件的情况下，与第一网络设备进行上行传输，也即，忽略第一AP设置的NAV，无需理会NAV指示的信道状态，即使信道状态为忙碌的情况下，终端设备也可以利用第一AP分享的传输机会与第一网络设备进行上行传输，有利于避免第一AP设置的NAV指示信道忙碌导致的终端设备无法响应第一网络设备发送的触发帧的问题，有利于提高资源利用率。
应理解，图2所示的步骤仅为示例，不应对本申请实施例构成任何限定。在其他的实施例中，图2所示的方法可以包括更多或更少的步骤。例如，终端设备可以不执行S220，直接执行S230，也即，终端设备可以先判断是否满足预设条件，如果满足预设条件，可以直接与第一网络设备进行上行传输。另外，本申请对图2所示的方法中各个步骤的顺序不作限定。例如，终端设备可以先执行S220，再执行S210。
可选地，上述预设条件的三种可能的设计如下：
第一种可能的设计是，上述预设条件包括：接收到来自第一网络设备的第一指示信息，该第一指示信息用于指示终端设备忽略第一AP设置的NAV，或，该第一指示信息用于指示终端设备忽略NAV。
其中，上述第一指示信息可以携带在来自第一网络设备的触发帧中。
第一指示信息可以指示终端设备忽略第一AP设置的NAV，也即，即使第一AP设置的NAV指示信道状态为忙碌，终端设备也可以响应第一网络设备发送的触发帧，与第一网络设备进行上行传输。
第一指示信息还可以用于指示终端设备忽略NAV，在这种情况下，终端设备不仅可以忽略第一AP设置的NAV，还可以忽略其他AP或站点设置的NAV。即使当前NAV指示信道状态为忙碌，终端设备也可以响应第一网络设备发送的触发帧，与第一网络设备进行上行传输。
一示例，终端设备接收来自第二AP的触发帧，该触发帧用于触发终端设备进行上行传输，该触发帧中携带第一指示信息，该第一指示信息指示终端设备忽略第一AP设置的NAV，或，该第一指示信息指示终端设备忽略NAV。
第二种可能的设计是，上述预设条件包括：预存的TXOP holder的MAC地址和第一AP的MAC地址相同。其中，TXOP holder表示被谁设置了TXOP，也即，谁正在使用信道进行传输。
在这种可能的设计中，终端设备还需要确定第一AP的MAC地址。
一种可能的实现方式是，上述触发帧中还携带有第一AP的标识，终端设备基于第一AP的标识和预存的第一AP的标识与第一AP的MAC地址的映射关系，确定第一AP的MAC地址。其中，终端设备可以预先接收来自第一网络设备的第一AP的标识与第一AP的MAC地址的映射关系，并将其存储，以便于终端设备接收到第一AP的标识后，可以基于上述映射关系，确定第一AP的MAC地址。
示例性地，第二AP预先将第一AP的标识与第一AP的MAC地址的映射关系发送给终端设备，以使终端设备存储上述映射关系。或者，上述映射关系也可以是第一AP发送给终端设备的，也即第一AP预先将第一AP的标识与第一AP的MAC地址的映射关系发送给终端设备，以使终端设备存储上述映射关系。可以理解，映射关系是第一AP发送给终端设备的情况下，第一AP还需要将第一AP的标识与第一AP的MAC地址的映射关系发送给第二AP，以便于第二AP将第一AP的标识携带在触发帧中发送给终端设备。终端设备在接收到来自第二AP的触发帧后，根据触发帧中携带的第一AP的标识和上述映射关系，确定第一AP的MAC地址，如果第一AP的MAC地址和自身存储的TXOP holder的MAC地址相同，则忽略第一AP设置的NAV，与第二AP进行上行传输。
表1是第一AP的标识与第一AP的MAC地址的映射关系的一示例。如表1所示，第一AP的MAC地址与第一AP的标识一一对应。可以理解，第一AP的标识的长度可以短于第一AP的MAC地址的长度，这样第一网络设备向终端设备发送第一AP的标识，有利于节省信令开销。
表1
应理解，上述映射关系并不限于表格的形式，例如还可以是其他的数据结构，例如可以采用数组、队列或栈等。本申请对于上述映射关系的具体形式不作限定。
另一种可能的实现方式是，上述触发帧中可以直接携带有第一AP的MAC地址，这样一来，终端设备接收到触发帧后，便可以获取到第一AP的MAC地址。
又一种可能的实现方式是，终端设备获取第一网络设备发送的应答帧，该应答帧中携带第一AP的MAC地址，该应答帧用于响应第一AP发送的传输机会共享帧，该传输机会共享帧用于指示第一AP向第一网络设备分享的传输机会；从应答帧中获取第一AP的MAC地址。
第一网络设备发送的应答帧中携带第一AP的MAC地址，终端设备可以监听上述应答帧，从上述应答帧中获取到第一AP的MAC地址。
示例性地，终端设备接收到来自第一网络设备的触发帧后，监听第一网络设备中的第二AP或站点向第一AP发送的CTS帧，该CTS帧中的接收者地址(receiver address，RA)字段中携带了第一AP的MAC地址，如果监听到CTS帧，则终端设备获取到第一AP的 MAC地址，进而判断该MAC地址与自身存储的TXOP holder的MAC地址是否相同，如果相同，则终端设备可以响应触发帧，与第一网络设备进行上行传输。
第三种可能的设计是，上述预设条件包括：上述NAV是intra-BSS NAV。
可以理解，协议规定，终端设备接收到触发帧后，若需判断信道状态是忙碌还是空闲，则可以只判断basic NAV是否不为零，无需判断intra-BSS NAV是否不为零。因此，在本申请中，第一AP设置的NAV设置成intra-BSS NAV，则终端设备接收到触发帧后，便可以忽略第一AP设置的NAV，成功地与第一网络设备进行上行传输。
这种设计下，终端设备可以通过以下方式设置NAV：终端设备接收到来自第一AP的无线帧后，若该无线帧指示终端设备设置NAV，则进一步判断第一AP是否属于预存的协作集合中的AP，若属于，则将NAV确定为intra-BSS NAV。
可选地，协作集合可以由第一网络设备预先指示给终端设备，以便于终端设备接收到无线帧后，确定无线帧的发送端是否属于协作集合。例如，第一网络设备可以预先向终端设备发送协作集合中的AP的MAC地址。其中，上述协作集合中的AP的MAC地址可以携带在第二AP以广播的形式发送的信标(Beacon)帧中，还可以携带在其他的单播或组播的管理帧中，本申请对此不作限定。
图3是本申请实施例提供的各个帧的发送过程的示意图。在图3所示的方法中，传输共享帧以MU-RTS为例，应答帧以CTS为例。
如图3中的a)所示，第一AP发送MU-RTS帧，相应地，第一网络设备中的站点接收MU-RTS帧。第一网络设备中的站点接收到MU-RTS帧后，发送CTS帧，并向第一网络设备中的第二AP指示第一AP将传输机会分享给第二AP，进而第二AP向终端设备发送触发帧，以触发终端设备进行上行传输，终端设备接收到触发帧后，在满足预设条件的情况下，发送上行数据。
如图3中的b)所示，第一AP发送MU-RTS帧，相应地，第一网络设备中的第二AP接收MU-RTS帧。第一网络设备中的第二AP接收到MU-RTS帧后，发送CTS帧，并向终端设备发送触发帧，以触发终端设备进行上行传输，终端设备接收到触发帧后，在满足预设条件的情况下，发送上行数据。
基于上述技术方案，终端设备在接收到来自第一网络设备的触发帧后，获取来自第一AP的NAV，即使NAV用于指示信道状态为忙碌，只要满足预设条件，终端设备便可以与第一网络设备进行上行传输，换言之，终端设备可以忽略第一AP设置的NAV，成功地响应来自第一网络设备的触发帧，这样一来，终端设备成功地与第一网络设备进行上行传输，有利于提高资源利用率。
图4是本申请实施例提供的通信装置400的示意性框图。
一种可能的设计是，上述通信装置400可以用于实现上述图2所示的方法实施例中终端设备的功能，或者，上述装置400可以包括用于实现上述图2所示的方法实施例中终端设备的任一功能或操作的模块，该模块可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。
示例性地，当装置400用于实现图2所示的方法实施例中终端设备的功能时，收发单元410可以用于接收来自第一网络设备的触发帧，该触发帧用于触发装置400进行上行传输，第一网络设备是协作传输中被分享传输机会的网络设备；确定单元420可以用于确定 NAV，NAV用于指示信道状态为忙碌，该NAV是第一AP设置的，第一AP是协作传输中向第一网络设备分享所述传输机会的AP；处理单元430可以用于在满足预设条件的情况下，与第一网络设备进行上行传输。
另一种可能的设计是，上述装置400可以用于实现上述图2所示的方法实施例中第一网络设备的功能，或者，上述装置400可以包括用于实现上述图2所示的方法实施例中第一网络设备的任一功能或操作的模块，该模块可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。
一示例，当装置400用于实现图2所示的方法实施例中第一网络设备的功能时，收发单元410可以用于向终端设备发送触发帧，该触发帧用于触发终端设备进行上行传输，该触发帧中携带第一指示信息，该第一指示信息用于指示终端设备忽略第一AP设置的NAV，该装置400是协作传输中被分享传输机会的装置，第一AP是协作传输中分享传输机会的AP；收发单元410还可以用于接收来自终端设备的上行数据。
又一示例，当装置400用于实现图2所示的方法实施例中第一网络设备的功能时，收发单元410可以用于向终端设备发送触发帧，该触发帧用于触发终端设备进行上行传输，该触发帧中携带第一AP的标识，第一AP的标识用于终端设备确定自身存储的NAV为第一AP设置的NAV，第一AP是协作传输中分享传输机会的AP；收发单元410还可以用于接收来自终端设备的上行数据。
又一种可能的设计是，上述装置400可以用于实现上述图2所示的方法实施例中第一AP的功能，或者，上述装置400可以包括用于实现上述图2所示的方法实施例中第一AP的任一功能或操作的模块，该模块可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。
示例性地，当装置400用于实现图2所示的方法实施例中第一AP的功能时，收发单元410可以用于向第一网络设备发送传输机会共享帧，该传输机会共享帧用于指示装置400向第一网络设备中的第二AP分享传输机会，第一网络设备是协作传输中被分享传输机会的网络设备，装置400是协作传输中分享传输机会的装置；收发单元410还可以用于接收来自第一网络设备的应答帧。
有关上述收发单元410、确定单元420以及处理单元430更详细的描述可以直接参考上述方法实施例中相关描述直接得到，这里不加赘述。
应理解，本申请实施例中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。另外，在本申请各个实施例中的各功能单元可以集成在一个处理器中，也可以是单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。
图5是本申请实施例提供的通信装置500的又一示意性框图。
该通信装置500可用于实现上述图3所示的实施例中所述的方法。该装置500可以为芯片系统。本申请实施例中，芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
如图5所示，该装置500可以包括至少一个处理器510，用于实现图2所示的实施例中所述的方法。
示例性地，处理器510可以用于接收来自第一网络设备的触发帧，该触发帧用于触发装置400进行上行传输，第一网络设备是协作传输中被分享传输机会的网络设备；确定NAV， NAV用于指示信道状态为忙碌，该NAV是第一AP设置的，第一AP是协作传输中向第一网络设备分享所述传输机会的AP；在满足预设条件的情况下，与第一网络设备进行上行传输。具体参见方法示例中的详细描述，此处不做赘述。
该装置500还可以包括至少一个存储器520，可以用于存储程序指令和/或数据。存储器520和处理器510耦合。本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。处理器510可能和存储器520协同操作。处理器510可能执行存储器520中存储的程序指令。所述至少一个存储器中的至少一个可以包括于处理器中。
该装置500还可以包括通信接口530，用于通过传输介质和其它设备进行通信，从而使得该装置500可以和其它设备进行通信。所述通信接口530例如可以是收发器、接口、总线、电路或者能够实现收发功能的装置。处理器510可利用通信接口530收发数据和/或信息，并用于实现图2所示的实施例中所述的方法。
本申请实施例中不限定上述处理器510、存储器520以及通信接口530之间的具体连接介质。本申请实施例在图5中以处理器510、存储器520以及通信接口530之间通过总线540连接。总线540在图5中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图5中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
图6是本申请实施例提供的终端设备600的结构示意图。该终端设备600可以用于实现图2所示实施例中所述的方法，该终端设备600可应用于如图1所示的通信系统100中。如图6所示，该终端设备600包括处理器601和收发器602。
可选地，该终端设备600还包括存储器603。其中，处理器601、收发器602和存储器603之间可以通过内部连接通路互相通信，传输控制和/或数据信号，该存储器603用于存储计算机程序，该处理器601用于从该存储器603中调用并运行该计算机程序，以控制该收发器602收发信号。
可选地，终端设备600还可以包括天线604，用于将收发器602输出的上行数据或上行控制信令通过无线信号发送出去。可选地，该终端设备600还包括Wi-Fi模块611，用于接入无线网络中。
上述处理器601可以和存储器603可以合成一个处理装置，处理器601用于执行存储器603中存储的程序代码来实现上述功能。具体实现时，该存储器603也可以集成在处理器601中，或者独立于处理器601。该处理器601可以与图4中的处理单元430或图5中的处理器510对应。
上述收发器602可以与图4中的收发单元410或图5中的通信接口530对应。收发器602可以包括接收器(或称接收机、接收电路)和发射器(或称发射机、发射电路)。其中，接收器用于接收信号，发射器用于发射信号。
可选地，上述终端设备600还可以包括电源605，用于给终端设备600中的各种器件或电路提供电源。
除此之外，为了使得该终端设备的功能更加完善，该终端设备600还可以包括输入单元606、显示单元607、音频电路608、摄像头609和传感器610等中的一个或多个，所述音频电路608还可以包括扬声器608a、麦克风608b等。
应理解，图6所示的终端设备600能够实现图2所示方法实施例中涉及终端设备的各个过程。终端设备600中的各个模块的操作和/或功能，分别为了实现上述方法实施例中的相应流程。具体可参见上述方法实施例中的描述，为避免重复，此处适当省略详细描述。
本申请还提供了一种芯片系统，所述芯片系统包括至少一个处理器，用于实现上述图2所示实施例中所述的方法。
在一种可能的设计中，所述芯片系统还包括存储器，所述存储器用于保存程序指令和数据，存储器位于处理器之内或处理器之外。
该芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
本申请还提供了一种芯片，该芯片包括处理器与通信接口，该处理器通过通信接口读取存储器上存储的指令，执行图2所示实施例中第一网络设备执行的方法，或终端设备执行的方法，或第一AP执行的方法。
本申请还提供一种计算机程序产品，所述计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当所述计算机程序被运行时，使得计算机执行如图2所示的实施例中第一网络设备执行的方法，或终端设备执行的方法，或第一AP执行的方法。
本申请还提供一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序(也可以称为代码，或指令)。当所述计算机程序被运行时，使得计算机执行如图2所示的实施例中第一网络设备执行的方法，或终端设备执行的方法，或第一AP执行的方法。
本申请还提供一种通信系统，包括如前所述的终端设备、第一AP以及第一网络设备。
应理解，本申请实施例中的处理器可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现场可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
还应理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器 (enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本说明书中使用的术语“单元”、“模块”等，可用于表示计算机相关的实体、硬件、固件、硬件和软件的组合、软件、或执行中的软件。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各种说明性逻辑块(illustrative logical block)和步骤(step)，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。在本申请所提供的几个实施例中，应该理解到，所揭露的装置、设备和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个模块或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或模块的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的模块可以是或者也可以不是物理上分开的，作为模块显示的部件可以是或者也可以不是物理模块，即可以位于一个地方，或者也可以分布到多个网络模块上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能模块可以集成在一个处理模块中，也可以是各个模块单独物理存在，也可以两个或两个以上单元集成在一个模块中。
在上述实施例中，各功能模块的功能可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令(程序)。在计算机上加载和执行所述计算机程序指令(程序)时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，数字通用光盘(digital video disc，DVD))、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而 前述的存储介质包括：U盘、移动硬盘、ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (28)

  1. 一种协作传输方法，其特征在于，应用于终端设备，所述方法包括：
    接收来自第一网络设备的触发帧，所述触发帧用于触发所述终端设备进行上行传输，所述第一网络设备是协作传输中被分享传输机会的网络设备；
    确定网络配置向量NAV，所述NAV用于指示信道状态为忙碌，所述NAV是第一无线接入点AP设置的，所述第一AP是协作传输中向所述第一网络设备分享所述传输机会的AP；
    在满足预设条件的情况下，与所述第一网络设备进行上行传输。
  2. 如权利要求1所述的方法，其特征在于，所述预设条件包括：
    接收到来自所述第一网络设备的第一指示信息，所述第一指示信息用于指示所述终端设备忽略所述第一AP设置的NAV，或，所述第一指示信息用于指示所述终端设备忽略NAV。
  3. 如权利要求1所述的方法，其特征在于，所述预设条件包括：
    预存的传输机会持有者TXOP holder的媒体接入控制MAC地址和所述第一AP的MAC地址相同。
  4. 如权利要求3所述的方法，其特征在于，所述方法还包括：
    确定所述第一AP的MAC地址。
  5. 如权利要求4所述的方法，其特征在于，所述触发帧中还携带有所述第一AP的标识；以及
    所述确定所述第一AP的MAC地址，包括：
    基于所述第一AP的标识和预存的所述第一AP的标识与所述第一AP的MAC地址的映射关系，确定所述第一AP的MAC地址。
  6. 如权利要求4所述的方法，其特征在于，所述确定所述第一AP的MAC地址，包括：
    获取所述第一网络设备发送的应答帧，所述应答帧中携带所述第一AP的MAC地址，所述应答帧用于响应所述第一AP发送的传输机会共享帧，所述传输机会共享帧用于指示所述第一AP向所述第一网络设备分享传输机会；
    从所述应答帧中获取所述第一AP的MAC地址。
  7. 如权利要求6所述的方法，其特征在于，所述第一网络设备包括第二AP，或，所述第一网络设备包括第二AP和站点。
  8. 如权利要求1至7中任一项所述的方法，其特征在于，所述第一AP向所述第一网络设备发送的传输机会共享帧为多用户请求发送MU-RTS帧，所述MU-RTS帧中包含预设字段，所述预设字段用于指示所述第一AP向所述第一网络设备中的第二AP分享所述传输机会。
  9. 如权利要求1所述的方法，其特征在于，所述预设条件包括：
    所述NAV是基本服务集内的intra-BSS NAV。
  10. 如权利要求9所述的方法，其特征在于，所述方法还包括：
    接收来自所述第一AP的无线帧，所述无线帧指示所述终端设备设置NAV；
    在所述第一AP属于预存的协作集合中的AP的情况下，将所述NAV确定为所述 intra-BSS NAV，所述协作集合中包括协作传输的AP。
  11. 一种协作传输方法，其特征在于，应用于第一网络设备，所述方法包括：
    向终端设备发送触发帧，所述触发帧用于触发所述终端设备进行上行传输，所述触发帧中携带第一指示信息，所述第一指示信息用于指示所述终端设备忽略第一无线接入点AP设置的NAV，所述第一网络设备是协作传输中被分享传输机会的网络设备，所述第一AP是协作传输中分享所述传输机会的AP；
    接收来自所述终端设备的上行数据。
  12. 如权利要求11所述的方法，其特征在于，所述第一指示信息还用于指示所述终端设备忽略NAV。
  13. 一种协作传输方法，其特征在于，应用于第一网络设备，所述方法包括：
    向终端设备发送触发帧，所述触发帧用于触发所述终端设备进行上行传输，所述触发帧中携带第一无线接入点AP的标识，所述第一AP的标识用于所述终端设备确定自身存储的NAV为所述第一AP设置的NAV，所述第一网络设备是协作传输中被分享传输机会的网络设备，所述第一AP是协作传输中分享所述传输机会的AP；
    接收来自所述终端设备的上行数据。
  14. 一种协作传输方法，其特征在于，应用于第一无线接入点AP，所述方法包括：
    向第一网络设备发送传输机会共享帧，所述传输机会共享帧用于指示所述第一AP向所述第一网络设备中的第二AP分享传输机会，所述第一网络设备是协作传输中被分享传输机会的网络设备，所述第一AP是协作传输中分享所述传输机会的AP；
    接收来自所述第一网络设备的应答帧。
  15. 一种通信装置，其特征在于，包括：
    收发单元，用于接收来自第一网络设备的触发帧，所述触发帧用于触发所述通信装置进行上行传输，所述第一网络设备是协作传输中被分享传输机会的网络设备；
    确定单元，用于确定网络配置向量NAV，所述NAV用于指示信道状态为忙碌，所述NAV是第一无线接入点AP设置的，所述第一AP是协作传输中向所述第一网络设备分享所述传输机会的AP；
    处理单元，用于在满足预设条件的情况下，与所述第一网络设备进行上行传输。
  16. 如权利要求15所述的装置，其特征在于，所述预设条件包括：
    接收到来自所述第一网络设备的第一指示信息，所述第一指示信息用于指示所述通信装置忽略所述第一AP设置的NAV，或，所述第一指示信息用于指示所述通信装置忽略NAV。
  17. 如权利要求15所述的装置，其特征在于，所述预设条件包括：
    预存的传输机会持有者TXOP holder的媒体接入控制MAC地址和所述第一AP的MAC地址相同。
  18. 如权利要求17所述的装置，其特征在于，所述处理单元还用于：
    确定所述第一AP的MAC地址。
  19. 如权利要求18所述的装置，其特征在于，所述触发帧中还携带有所述第一AP的标识，所述处理单元具体用于：
    基于所述第一AP的标识和预存的所述第一AP的标识与所述第一AP的MAC地 址的映射关系，确定所述第一AP的MAC地址。
  20. 如权利要求18所述的装置，其特征在于，所述处理单元具体用于：
    获取所述第一网络设备发送的应答帧，所述应答帧中携带所述第一AP的MAC地址，所述应答帧用于响应所述第一AP发送的传输机会共享帧，所述传输机会共享帧用于指示所述第一AP向所述第一网络设备分享所述传输机会；
    从所述应答帧中获取所述第一AP的MAC地址。
  21. 如权利要求15所述的装置，其特征在于，所述预设条件包括：
    所述NAV是基本服务集内的intra-BSS NAV。
  22. 如权利要求21所述的装置，其特征在于，所述收发单元还用于接收来自所述第一AP的无线帧，所述无线帧指示所述通信装置设置NAV；
    所述处理单元还用于在所述第一AP属于预存的协作集合中的AP的情况下，将所述NAV确定为所述intra-BSS NAV，所述协作集合中包括协作传输的AP。
  23. 一种通信装置，其特征在于，包括：
    收发单元，用于向终端设备发送触发帧，所述触发帧用于触发所述终端设备进行上行传输，所述触发帧中携带第一指示信息，所述第一指示信息用于指示所述终端设备忽略第一无线接入点AP设置的NAV，所述通信装置是协作传输中被分享传输机会的网络设备，所述第一AP是协作传输中分享所述传输机会的AP；
    所述收发单元还用于接收来自所述终端设备的上行数据。
  24. 一种通信装置，其特征在于，包括：
    收发单元，用于向终端设备发送触发帧，所述触发帧用于触发所述终端设备进行上行传输，所述触发帧中携带第一无线接入点AP的标识，所述第一AP的标识用于所述终端设备确定自身存储的NAV为所述第一AP设置的NAV，所述通信装置是协作传输中被分享传输机会的网络设备，所述第一AP是协作传输中分享所述传输机会的AP；
    所述收发单元还用于接收来自所述终端设备的上行数据。
  25. 一种通信装置，其特征在于，包括：
    收发单元，用于向第一网络设备发送传输机会共享帧，所述传输机会共享帧用于指示所述装置向所述第一网络设备中的第二无线接入点AP分享传输机会，所述第一网络设备是协作传输中被分享传输机会的网络设备，所述装置是协作传输中分享所述传输机会的装置；
    所述收发单元还用于接收来自所述第一网络设备的应答帧。
  26. 一种通信装置，其特征在于，包括处理器和存储器，其中，
    所述存储器用于存储计算机程序；
    所述处理器用于调用所述计算机程序，以使得所述通信装置执行权利要求1至14中任一项所述的方法。
  27. 一种计算机可读存储介质，其特征在于，所述存储介质中存储有计算机程序或指令，当所述计算机程序或指令被计算机执行时，实现如权利要求1至14中任一项所述的方法。
  28. 一种芯片，其特征在于，所述芯片包括处理器与通信接口，所述处理器通过 所述通信接口读取存储器上存储的指令，执行如权利要求1至14中任一项所述的方法。
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