WO2024031807A1 - Procédé d'établissement d'une liaison directe entre des dispositifs à liaisons multiples - Google Patents

Procédé d'établissement d'une liaison directe entre des dispositifs à liaisons multiples Download PDF

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Publication number
WO2024031807A1
WO2024031807A1 PCT/CN2022/123055 CN2022123055W WO2024031807A1 WO 2024031807 A1 WO2024031807 A1 WO 2024031807A1 CN 2022123055 W CN2022123055 W CN 2022123055W WO 2024031807 A1 WO2024031807 A1 WO 2024031807A1
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WO
WIPO (PCT)
Prior art keywords
link
terminal
direct
logical
channel
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PCT/CN2022/123055
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English (en)
Chinese (zh)
Inventor
钟希望
杨洋
何林松
王端喜
唐亮
辛伟
任启航
王昊
邓睿
张茂林
黄明佳
刘俊
Original Assignee
四川华能嘉陵江水电有限责任公司
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Publication of WO2024031807A1 publication Critical patent/WO2024031807A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • 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]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the technical field of establishing direct links for multi-link devices, and in particular, to a method for establishing direct links for multi-link devices.
  • 802.11be networks also known as Extremely High Throughput (EHT) networks
  • EHT Extremely High Throughput
  • WLANs wireless local area networks
  • video traffic will continue to be the dominant traffic type in many WLAN deployments.
  • the throughput requirements of these applications are evolving due to the emergence of 4k and 8k video (uncompressed rates of 20Gbps).
  • New high-throughput, low-latency applications such as virtual or augmented reality, gaming, remote offices, and cloud computing will proliferate (e.g., real-time gaming with latency below 5 milliseconds).
  • 802.11be networks are designed to ensure the competitiveness of WLANs by further increasing overall throughput and reducing latency, while ensuring backward compatibility and coexistence with legacy technology standards.
  • 802.11 compliant devices operating in the 2.4GHz, 5GHz and 6GHz frequency bands.
  • Terminals can establish direct links, also known as direct links, to reduce data transmission links, increase transmission rates, and reduce transmission delays.
  • Multi-link terminals can establish multiple direct connection links and use multi-link technology and direct link technology at the same time to increase the transmission rate and reduce transmission delay to a greater extent.
  • the existing technology can only establish a direct link based on a single link scenario.
  • the present invention provides a method for multi-link devices to establish direct links, which can solve the current problems of independent establishment of multiple links, only link-level negotiation between them, and no device-level negotiation. .
  • a method for multi-link devices to establish direct links including:
  • the first multi-link terminal sends a request to establish a direct link instruction and passes it to the second multi-link terminal via the multi-link access device;
  • the second multi-link terminal sends an instruction agreeing to establish a direct link and sends it back to the first multi-link terminal via the multi-link access device;
  • the first multi-link terminal After receiving the consent instruction, the first multi-link terminal issues a confirmation instruction and passes it to the second multi-link terminal via the multi-link access device;
  • the second multi-link terminal completes the direct link establishment after receiving the confirmation instruction, and directly sends and receives data on the confirmed link. Data is sent and received without going through the multi-link access device.
  • the instruction for establishing a direct link includes information requesting the establishment of multiple links of the direct link, each A cell contains, for example, a link identification, the address of a logical entity operating on the link, non-simultaneous transceiver link information and operating parameters.
  • the first multi-link terminal and the second multi-link terminal each include three logical terminals, and the multiple The link access device contains three logical access points.
  • the two multi-link terminals, six logical terminals, one multi-link access device and three logical Access points are assigned different LAN addresses.
  • the first multi-link terminal is the initiator of direct link establishment
  • the second multi-link terminal The terminal is the responder for direct link establishment.
  • the first multi-link terminal detects that the current communication channel is busy, and sends a signal to the second multi-link terminal.
  • the terminal initiates a channel switching command.
  • the channel switching includes:
  • the first logical terminal in the first multi-link terminal sends switching channel request information to the fourth logical terminal in the second multi-link terminal;
  • the fourth logical terminal After receiving the channel switching request information, the fourth logical terminal sends channel switching response information to the first logical terminal;
  • the first logical terminal After receiving the channel switching response message, the first logical terminal sets local parameters according to the received message content and sends a successful reception response message to the fourth logical terminal;
  • the first logical terminal waits to receive a response signal indicating that the fourth logical terminal has received data and successfully established a new channel connection.
  • the switching channel request information includes the target channel for switching, the time required for switching the channel, and the waiting time after switching the channel. duration.
  • the channel switching request information further includes:
  • the first logical terminal After successfully receiving the response message, the first logical terminal attempts to send data to the fourth logical terminal. The detection can be repeated based on whether there is data sent by the fourth logical terminal on the target channel, but the number of detections does not exceed the maximum detection value. ;
  • the fourth logical terminal After receiving the successful reception response message, the fourth logical terminal attempts to send data to the first logical terminal and detects whether there is data sent by the first logical terminal on the target channel. The detection can be repeated, but the number of detections does not exceed the maximum detection value.
  • the switching channel request information also includes successfully receiving a response for sending data before the timer expires, or If the data sent by the corresponding logical terminal is successfully detected and received, the timer will be stopped. If the timer expires and the data is not successfully sent or received, the timer will be switched back to the original channel.
  • the present invention proposes a method for establishing a direct link for a multi-link device.
  • multiple logical entities of a multi-link terminal can coordinate whether to establish a direct link. How many direct links are established and the direct links between multi-link terminals are dynamically configured, effectively improving the use efficiency of wireless resources, further increasing the data transmission rate and reducing transmission delay.
  • WLAN competitiveness by further increasing overall throughput and reducing latency, while ensuring backward compatibility and coexistence with legacy technology standards for 802.11-compliant devices operating in the 2.4GHz, 5GHz and 6GHz frequency bands.
  • Figure 1 is a flow chart of a method for establishing a direct link for a multi-link device according to an embodiment of the present invention
  • Figure 2 is a flow chart of specific steps of a method for establishing a direct link for a multi-link device according to an embodiment of the present invention
  • Figure 3 is a schematic structural diagram of a method for establishing a direct link for a multi-link device according to an embodiment of the present invention
  • references herein to "one embodiment” or “an embodiment” refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. "In one embodiment” appearing in different places in this specification does not all refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.
  • connection should be understood in a broad sense.
  • it can be a fixed connection, a detachable connection, or an integrated connection; it can also be a mechanical connection, an electrical connection, or a direct connection.
  • a connection can also be indirectly connected through an intermediary, or it can be an internal connection between two components.
  • the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • This embodiment provides a method for a multi-link device to establish a direct link, including:
  • the first multi-link terminal sends a request to establish a direct link instruction, which is passed to the second multi-link terminal via the multi-link access device;
  • the first multi-link terminal Non-AP MLD1 has three logical terminals STA1, STA2 and STA3.
  • Non-AP MLD1, STA1, STA2 and STA3 are assigned different MAC addresses respectively.
  • the second multi-link terminal Non- AP MLD2 has three logical terminals STA4, STA5 and STA6.
  • Non-AP MLD2, STA4, STA5 and STA6 are assigned different MAC addresses respectively.
  • the multi-link access device AP MLD has three logical access points AP1, AP2 and AP3.
  • AP MLD, AP1, AP2 and AP3 are assigned different MAC addresses respectively.
  • STA1 and STA4 are connected to AP1
  • STA2 and STA5 are connected to AP2
  • STA3 and STA6 are connected to AP3;
  • AP1 operates on the link with the link identifier Link1
  • AP2 operates on the link with the link identifier Link2.
  • AP3 operates on the link identified as Link3.
  • the multi-link terminal Non-AP MLD1 is the initiator of direct link establishment
  • the multi-link terminal Non-AP MLD2 is the responder of direct link establishment.
  • the present invention assumes that Non-AP MLD1 and Non -AP MLD2 establishes direct links on all links, and Link1 and Link2 are coherent link pairs.
  • a coherent link pair means that the two links will interfere with each other.
  • Non-AP MLD1 establishes a connection with AP MLD and receives the parameters configured by AP MLD for its relevant link pair:
  • MSD ED detection signal threshold
  • Max number for detect the maximum number of detections
  • Non-AP MLD2 establishes a connection with AP MLD and receives the parameters configured by AP MLD for its relevant link pair:
  • MSD ED detection signal threshold
  • Max number for detection the maximum number of detections
  • Non-AP MLD1 sends a TDLS setup request message to Non-AP MLD2, where the TDLS setup request message is set to:
  • Type is set to TDLS discovery/setup, indicating that this information element is used for direct device discovery or direct link establishment;
  • Link info 1Non-AP MLD1 requests information on multiple links to establish direct links.
  • Each link info N contains, for example, link identification, the address of the logical entity operating on the link, non-simultaneous sending and receiving of link information, Operating parameters, etc.;
  • the second multi-link terminal sends an instruction to agree to establish a direct link, and sends it back to the first multi-link terminal through the multi-link access device;
  • Non-AP MLD2 After Non-AP MLD2 receives the TDLS setup request message (TDLS is a tunnel direct link), it determines whether it agrees to establish direct connections on these links based on the link info in the Multi-link element. If so, Then the link information is included in the TDLS setup response message. After the confirmation is completed, Non-AP MLD2 can send a TDLS setup response message to Non-AP MLD1 through AP MLD on any link that confirms the agreement to establish a direct link. .
  • TDLS tunnel direct link
  • TDLS setup response message is set to:
  • Type is set to TDLS discovery/setup, indicating that this information element is used for direct device discovery or direct link establishment;
  • Link info 1 Non-AP MLD2 agrees to establish multiple link information for direct links.
  • Each link info N contains, for example, link identification, the address of the logical entity operating on the link, and non-simultaneous sending and receiving of link information. , operating parameters, etc.;
  • the first multi-link terminal After receiving the consent instruction, the first multi-link terminal issues a confirmation instruction and passes it to the second multi-link terminal via the multi-link access device;
  • Non-AP MLD1 After receiving the TDLS setup response message, Non-AP MLD1 sends a TDLS setup confirm message to Non-AP MLD2 on the confirmed direct link through AP MLD based on the confirmed direct link information in the message. .
  • the second multi-link terminal completes the direct link establishment after receiving the confirmation command, and directly sends and receives data on the confirmed link. Data is sent and received without going through the multi-link access device.
  • Non-AP MLD2 After receiving the TDLS setup confirm message, Non-AP MLD2 starts to directly send and receive data with Non-AP MLD1 on the confirmed link. Data is sent and received without going through AP MLD.
  • This embodiment provides a method for multi-link devices to establish direct links, which also includes channel switching,
  • the first logical terminal in the first multi-link terminal sends switching channel request information to the fourth logical terminal in the second multi-link terminal;
  • the fourth logical terminal After receiving the channel switching request information, the fourth logical terminal sends channel switching response information to the first logical terminal;
  • the first logical terminal After receiving the channel switching response message, the first logical terminal sets local parameters according to the received message content and sends a successful reception response message to the fourth logical terminal;
  • the first logical terminal waits to receive a response signal indicating that the fourth logical terminal has received data and successfully established a new channel connection.
  • Non AP MLD1 detected that the current communication channel on link link1 was too busy, and decided to negotiate with Non AP MLD2 to change a channel;
  • the logical entity STA1 of Non AP MLD1 sends a TDLS channel switch request message to the logical entity STA4 of Non AP MLD2, where the request message contains:
  • Target channel The target channel for switching
  • STA4 After receiving the TDLS channel switch request message, STA4 sends a TDLS channel switch response message to STA1.
  • the response message contains:
  • the value of the Switch time required to switch channels and confirmed by Non-AP MLD2 can be greater than or equal to the value requested by Non-AP MLD1;
  • switch timeout is set as follows:
  • Link1 and Link2 are set to the value of the switch timeout parameter in the request message
  • link1 and link2 are coherent links, they are set to the value of switch timeout in the request message plus Medium synchronization delay2;
  • STA1 After STA1 receives the TDLS channel switch response message, it sets the value of the local corresponding parameter according to the value of the received parameter, and sends a successful reception response message to STA4.
  • the timer Timer1_switch_time is started. , its value is set to the value of the parameter switch time, start the timer Timer1-switch-timeout, its value is set to the parameter switch timeout, after the timer Timer1_switch_time expires, try to send data to STA4, or on the target channel according to MSD ED
  • the value is used as the detection threshold to detect whether there is data sent by STA4. The detection can be repeated, but the number of detections does not exceed the value of Max number for detection;
  • STA4 After STA4 receives the response successfully in response to the TDLS channel switch response message, it starts the timer Timer4_switch_time, whose value is set to the value of the parameter switch time, and starts the timer Timer4-switch-timeout, whose value is set to the parameter switch timeout. , after the timer Timer4_switch_time expires, try to send data to STA1, or use the value of MSD ED as the detection threshold to detect whether there is data sent by STA1 on the target channel. The detection can be repeated, but the number of detections does not exceed the Max number for detection. value.
  • an embodiment of the present invention provides a method for establishing direct links for multi-link equipment.
  • the Dongxiguan Hydropower Station is located in the middle reaches of the Jialing River in Wusheng County, Sichuan province. It is a hydropower station mainly engaged in power generation. It is a run-of-river low-head power station that takes into account shipping. The power station is designed to be unmanned and with few people on duty.
  • the Dongxiguan Water conserveancy Project consists of a barrage, an open water diversion channel and a factory lock, all of which are arranged independently.
  • the barrage is a concrete solid gravity dam with a dam crest elevation of 261.20m, a maximum dam height of 47.2m, and a total dam crest length of 631.15m.
  • the present invention is used in the Dongxiguan Hydropower Station Industrial TV. Such a large project is to ensure the safe use of the hydropower station. Therefore, a large amount of monitoring equipment is required, and a large number of monitoring equipment requires ultra-large bandwidth to process data.
  • left bank retaining dam section From left to right, they are the left bank retaining dam section, the left bank overflow dam section, the floodgate dam section, the connecting dam section, the right bank overflow dam section, the right bank stairwell dam section and the right bank connecting dam section.
  • a total of 170 high-definition industrial cameras are used in these flow sections, including 18 high-definition industrial cameras in the left bank retaining dam section, 28 high-definition industrial cameras in the left bank overflow dam section, 48 high-definition industrial cameras in the connecting dam section, and 48 high-definition industrial cameras in the right bank overflow dam section.
  • Multi-link direct connection obtains high-speed transmission rate and reduces inspection time.
  • the media monitoring is kept synchronized through timer control, thereby avoiding the need for two multi-link terminals to perform channel switching on the direct link.
  • channel monitoring fails due to interference on multiple links that are mutually coherent links, and data cannot be sent or received.
  • embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment that combines software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
  • the solutions in the embodiments of this application can be implemented using various computer languages, such as the object-oriented programming language Java and the literal scripting language JavaScript.
  • These computer program instructions may also be stored in a computer-readable memory that causes a computer or other programmable data processing apparatus to operate in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction means, the instructions
  • the device implements the functions specified in a process or processes of the flowchart and/or a block or blocks of the block diagram.
  • These computer program instructions may also be loaded onto a computer or other programmable data processing device, causing a series of operating steps to be performed on the computer or other programmable device to produce computer-implemented processing, thereby executing on the computer or other programmable device.
  • Instructions provide steps for implementing the functions specified in a process or processes of a flowchart diagram and/or a block or blocks of a block diagram.

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

Abstract

La présente invention divulgue un procédé d'établissement d'une liaison directe entre des dispositifs à liaisons multiples. Le procédé comprend les étapes suivantes : un premier terminal à liaisons multiples envoie une instruction demandant à ce qu'une liaison directe soit établie et l'instruction est transmise à un second terminal à liaisons multiples par l'intermédiaire d'un dispositif d'accès à liaisons multiples ; le second terminal à liaisons multiples envoie une instruction d'accord pour établir la liaison directe et l'instruction est renvoyée au premier terminal à liaisons multiples par l'intermédiaire du dispositif d'accès à liaisons multiples ; après réception de l'instruction d'accord, le premier terminal à liaisons multiples envoie une instruction de confirmation et l'instruction de confirmation est transmise au second terminal à liaisons multiples par l'intermédiaire du dispositif d'accès à liaisons multiples ; et après réception de l'instruction de confirmation, le second terminal à liaisons multiples achève l'établissement de liaison directe et des données sont directement envoyées et reçues sur la liaison confirmée sans passer par le dispositif d'accès à liaisons multiples. Puisque de multiples entités logiques des terminaux à liaisons multiples peuvent coordonner si les liaisons directes sont établies et combien de liaisons directes sont établies, les liaisons directes entre les terminaux à liaisons multiples sont configurées de manière dynamique, ce qui permet d'améliorer efficacement l'efficacité d'utilisation de ressources sans fil, d'augmenter davantage le débit de transmission de données et de réduire le retard de transmission.
PCT/CN2022/123055 2022-08-08 2022-09-30 Procédé d'établissement d'une liaison directe entre des dispositifs à liaisons multiples WO2024031807A1 (fr)

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CN202210941496.7 2022-08-08
CN202210941496.7A CN115474293A (zh) 2022-08-08 2022-08-08 一种多链路设备建立直连链路的方法

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190082373A1 (en) * 2017-09-11 2019-03-14 Qualcomm Incorporated Techniques for multi-link aggregation signaling
WO2021179111A1 (fr) * 2020-03-09 2021-09-16 北京小米移动软件有限公司 Procédé de commutation de canal, appareil, dispositif, et support de stockage lisible
CN113973400A (zh) * 2020-07-24 2022-01-25 华为技术有限公司 建立直连链路、无线局域网帧发送的方法、装置及系统
WO2022124979A1 (fr) * 2020-12-10 2022-06-16 Panasonic Intellectual Property Corporation Of America Appareil de communication et procédé de communication pour une communication de pair à pair multi-liaison

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190082373A1 (en) * 2017-09-11 2019-03-14 Qualcomm Incorporated Techniques for multi-link aggregation signaling
WO2021179111A1 (fr) * 2020-03-09 2021-09-16 北京小米移动软件有限公司 Procédé de commutation de canal, appareil, dispositif, et support de stockage lisible
CN113973400A (zh) * 2020-07-24 2022-01-25 华为技术有限公司 建立直连链路、无线局域网帧发送的方法、装置及系统
WO2022124979A1 (fr) * 2020-12-10 2022-06-16 Panasonic Intellectual Property Corporation Of America Appareil de communication et procédé de communication pour une communication de pair à pair multi-liaison

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