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WO2025231611A1 - Procédé de communication, dispositifs de communication et système de communication - Google Patents

Procédé de communication, dispositifs de communication et système de communication

Info

Publication number
WO2025231611A1
WO2025231611A1 PCT/CN2024/091419 CN2024091419W WO2025231611A1 WO 2025231611 A1 WO2025231611 A1 WO 2025231611A1 CN 2024091419 W CN2024091419 W CN 2024091419W WO 2025231611 A1 WO2025231611 A1 WO 2025231611A1
Authority
WO
WIPO (PCT)
Prior art keywords
link
communication
txop
data
periodic
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.)
Pending
Application number
PCT/CN2024/091419
Other languages
English (en)
Chinese (zh)
Inventor
董贤东
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.)
Beijing Xiaomi Mobile Software Co Ltd
Original Assignee
Beijing Xiaomi Mobile Software 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 Beijing Xiaomi Mobile Software Co Ltd filed Critical Beijing Xiaomi Mobile Software Co Ltd
Priority to PCT/CN2024/091419 priority Critical patent/WO2025231611A1/fr
Publication of WO2025231611A1 publication Critical patent/WO2025231611A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • 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

  • This disclosure relates to the field of communication technology, and in particular to a communication method, communication device and communication system.
  • UHR Ultra High Reliability
  • WLAN Wireless Local Area Networks
  • SNR signal-to-noise ratio
  • NSTR Non-simultaneous Transmit and Receive
  • This disclosure provides a communication method, communication device, and communication system to further enhance the NSTR mechanism.
  • embodiments of this disclosure provide a communication method applied to a multi-link site device (non-AP MLD), the method comprising:
  • this disclosure also provides a communication device, which is a multi-link site device (non-AP MLD), and the communication device includes:
  • the access module is used to initialize the transmission opportunity TXOP access channel under the first link;
  • the adjustment module is used for periodic communication services with other communication media existing under the second link, and the first link and the second link are non-simultaneous sending and receiving NSTR link pairs, wherein the non-AP MLD adjustment is performed under the first link.
  • embodiments of this disclosure also provide a communication device, including:
  • One or more processors are One or more processors;
  • the communication device is used to execute the communication method described in the embodiments of this disclosure.
  • embodiments of this disclosure also provide a communication device, including:
  • One or more processors are One or more processors;
  • the communication device is used to execute the communication method described in the embodiments of this disclosure.
  • This disclosure also provides a communication system, including a communication device; wherein the communication device is configured to implement the communication method described in this disclosure.
  • This disclosure also provides a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the communication method as described in this disclosure.
  • a non-AP STA attached to a non-AP MLD initializes a TXOP access channel under a first link, while periodic communication services of other communication media exist under a second link.
  • the first link and the second link are NSTR link pairs, and the TXOP of the first link overlaps with the periodic communication services of other communication media on the second link in time.
  • the non-AP MLD adjusts its operation under the first link, for example, by ending the TXOP early or entering a power saving (PS) mode during the overlapping time, to avoid interference from communication services of other communication media on the current Wi-Fi communication, which could lead to low transmission efficiency, data packet loss, or even communication interruption.
  • PS power saving
  • Figure 1 is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure
  • Figure 2 is a flowchart illustrating one of the communication methods provided in this embodiment of the present disclosure
  • FIG. 3 is a second schematic flowchart of the communication method provided in this embodiment of the present disclosure.
  • Figure 4 is a third schematic flowchart of the communication method provided in this embodiment of the present disclosure.
  • Figure 5 is a fourth flowchart illustrating the communication method provided in this embodiment of the present disclosure.
  • Figure 6 is a fifth flowchart illustrating the communication method provided in this embodiment of the present disclosure.
  • Figure 7 is a sixth schematic flowchart of the communication method provided in this embodiment of the present disclosure.
  • Figure 8 is a flowchart of the communication method provided in this embodiment of the present disclosure (the seventh one).
  • Figure 9 is a schematic diagram of the structure of the communication device proposed in an embodiment of this disclosure.
  • Figure 10 is a schematic diagram of the structure of the terminal proposed in the embodiment of this disclosure.
  • Figure 11 is a schematic diagram of the chip structure proposed in the embodiments of this disclosure.
  • This disclosure presents a communication method, communication device, and communication system.
  • embodiments of this disclosure provide a communication method, the method comprising:
  • the operation of the non-AP MLD adjustment under the first link includes at least one of the following:
  • the TXOP of the first link is terminated in advance
  • the first link During the communication time of the periodic communication service, the first link enters a power-saving PS mode.
  • the first link is in a blind state, and when the communication time of the periodic communication service ends, the first link resumes media access.
  • the operation of the non-AP MLD adjustment under the first link includes at least one of the following:
  • the non-AP MLD will not send data during the TXOP period under the first link, or will terminate the TXOP of the first link early, or will reduce the data transmission power by a preset parameter value.
  • the non-AP MLD sends a Block Acknowledgment (BA) message frame to the data transmitter of the non-AP STA before the data transmission or reception operation on the second link.
  • the BA message frame indicates that the non-AP STA requests the data transmitter to terminate data transmission.
  • the operation under the first link is adjusted according to the data received or transmitted status of the non-AP STA.
  • the non-AP STA receives data, and the periodic communication service transmits data on the second link.
  • the BA message frame includes transmission duration information, and the BA message frame instructs the data sender to: enter a sleep state within the time specified by the transmission duration information; or, after the time specified by the transmission duration information, re-acquire TXOP for transmission according to the Enhanced Distributed Channel Access (EDCA) mechanism.
  • EDCA Enhanced Distributed Channel Access
  • the device by carrying transmission duration information in the BA message frame, the device enters a sleep state within the time specified by the transmission duration information to avoid mutual interference; or after the time specified by the transmission duration information, the device re-obtains the TXOP according to the EDCA mechanism for transmission to ensure the transmission of WiFi services.
  • the early termination of the TXOP of the first link includes:
  • the non-AP MLD uses the maximum number of spatial streams (SS) or the maximum number of antennas to determine the time to end the TXOP of the first link based on the switching delay between the first link and the second link.
  • SS spatial streams
  • the time to end the TXOP of the first link is determined based on the switching delay, so as to improve the accuracy of the time to end the TXOP early.
  • the method further includes:
  • TSF time synchronization function offset
  • the method for obtaining the periodic communication time of other communication technologies can be that the non-AP STA under one link can determine the data transmission or data reception operation of the second link based on the data transmission operation information and data reception operation information periodically broadcast by the STA under other links; and accurately obtain the communication time of the periodic communication service based on the periodic communication duration of other communication technologies broadcast by the STA operating on the second link and the TSF offset.
  • embodiments of this disclosure also provide a communication device, which includes at least one of an access module and an adjustment module; wherein the communication device is used to execute an optional implementation of the first aspect.
  • embodiments of this disclosure also provide a communication device, including:
  • One or more processors are One or more processors;
  • the communication device is used to execute an optional implementation of the first aspect.
  • embodiments of this disclosure also provide a communication device, including:
  • One or more processors are One or more processors;
  • the communication device is used to execute an optional implementation of the second aspect.
  • embodiments of this disclosure also provide a communication system, including a communication device; wherein the communication device is configured to perform the optional implementation described in the first aspect, and the communication device is configured to perform the optional implementation described in the second aspect.
  • embodiments of this disclosure also provide a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the optional implementation described in the first aspect.
  • embodiments of this disclosure provide a program product that, when executed by a communication device, causes the communication device to perform the method described in the optional implementation of the first aspect.
  • embodiments of this disclosure provide a computer program that, when run on a computer, causes the computer to perform the method as described in an alternative implementation of the first aspect.
  • inventions of this disclosure provide a chip or chip system.
  • the chip or chip system includes processing circuitry configured to perform the method described according to an optional implementation of the first aspect above.
  • This disclosure provides communication methods, communication devices, and communication systems.
  • the terms “communication method” and “signal transmission method,” “wireless frame transmission method,” etc. can be used interchangeably, as can the terms “information processing system” and “communication system.”
  • each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined.
  • a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged.
  • the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.
  • multiple refers to two or more.
  • the terms “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.
  • the notation "at least one of A and B", “A and/or B", “A in one case, B in another”, “in response to one case A, in response to another case B”, etc. may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of B); in some embodiments, B (execute B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). The same applies when there are more branches such as A, B, C, etc.
  • the notation "A or B” may include the following technical solutions, depending on the situation: in some embodiments, A (execution of A regardless of B); in some embodiments, B (execution of B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, C, etc.
  • the descriptive object is a "field,” the ordinal numbers preceding "field” in “first field” and “second field” do not restrict the position or order of the "fields.” "First” and “second” do not restrict whether the "fields” they modify are in the same message, nor do they restrict the order of "first field” and “second field.”
  • the descriptive object is a "level,” the ordinal numbers preceding "level” in “first level” and “second level” do not restrict the priority between “levels.”
  • the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in “first device,” the number of "devices" can be one or more.
  • the objects modified by different prefixes can be the same or different.
  • first device and second device can be the same device or different devices, and their types can be the same or different.
  • first information and second information can be the same information or different information, and their content can be the same or different.
  • “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.
  • the terms “in response to...”, “in response to determining...”, “in the case of...”, “when...”, “if...”, “if...”, etc., can be used interchangeably.
  • the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.
  • the apparatus and device may be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they may also be understood as “equipment”, “device”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity”, “body”, etc.
  • the acquisition of data, information, etc. may comply with the laws and regulations of the country where the location is situated.
  • data, information, etc. may be obtained with the user's consent.
  • each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.
  • Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.
  • the communication system 100 includes an Access Point Multi-Link Device (AP MLD, or multi-connection access point device) 101 and a Non-Access Point Multi-Link Device (Non-AP MLD, or multi-connection site device) 102.
  • AP MLD Access Point Multi-Link Device
  • Non-AP MLD Non-Access Point Multi-Link Device
  • a physical device can include multiple logical devices.
  • a multi-link device (or multi-connection device) contains multiple logical entities, each transmitting data through a separate link. Each logical entity contains an independent data transceiver module.
  • a single-link device (or single-connection device) has only one logical entity and only one MAC address, while a multi-link device has one MAC address. Each logical entity belonging to the multi-link device has its own MAC address. For example, if a multi-link device operates with three logical entities, then there are four MAC addresses on this physical device: one for the multi-link device and one for each of the three logical entities.
  • AP MLD101 may include three auxiliary APs, as shown in Figure 1, AP1, AP2 and AP3; each AP may operate on Link 1, Link 2 and Link 3 respectively; non-AP MLD102 may also include three auxiliary STAs, as shown in Figure 1, non-AP STA1, non-AP STA2 and non-AP STA3; non-AP STA1 operates on Link 1, non-AP STA2 operates on Link 2 and non-AP STA3 operates on Link 3.
  • Links 1 to 3 can be multiple links at different frequencies, such as links at 2.4 GHz, 5 GHz, and 6 GHz, or several links with the same or different bandwidths at 2.4 GHz. Additionally, multiple channels can exist under each link.
  • AP MLD can link to multiple (three) non-AP MLDs, or under each link, AP can communicate with multiple other types of sites.
  • the Non-AP MLD includes, for example, a wireless communication chip, a wireless sensor, or a wireless communication terminal that supports WiFi communication.
  • the wireless communication terminal may be at least one of, but is not limited to, a mobile phone, a wearable device, an IoT device that supports WiFi communication, a car with WiFi communication capabilities, a smart car, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home.
  • a mobile phone a wearable device
  • an IoT device that supports WiFi communication
  • a car with WiFi communication capabilities a smart car
  • a tablet computer a computer with wireless transceiver capabilities
  • VR virtual reality
  • the Non-AP MLD can be a terminal device or network device with a Wi-Fi chip.
  • the STA can support various WLAN standards such as 802.11ax, 802.11be, 802.11ac, 802.11n, 802.11g, 802.11b, 802.11a, 802.11bf, and 802.11bn, as well as the next-generation 802.11 protocol, but is not limited to these.
  • an AP can be an access point for mobile terminals to access a wired network.
  • An AP acts as a bridge connecting wired and wireless networks, its main function being to connect various wireless network clients together and then connect the wireless network to an Ethernet network.
  • an AP can be a terminal device or network device equipped with a Wi-Fi chip.
  • the AP can support various WLAN standards such as 802.11ax, 802.11be, 802.11ac, 802.11n, 802.11g, 802.11b, 802.11a, 802.11bf, and 802.11bn, as well as the next-generation 802.11 protocol, but is not limited to these.
  • the following embodiments of this disclosure can be applied to the communication system 100 shown in FIG1, or to some of the main bodies, but are not limited thereto.
  • the main bodies shown in FIG1 are illustrative.
  • the communication system may include all or some of the main bodies in FIG1, or may include other main bodies outside of FIG1.
  • the number and form of each main body are arbitrary.
  • Each main body may be physical or virtual.
  • the connection relationship between the main bodies is illustrative.
  • the main bodies may not be connected or may be connected.
  • the connection can be in any way, it can be a direct connection or an indirect connection, it can be a wired connection or a wireless connection.
  • a Basic Service Set (BSS) is a fundamental component.
  • An BSS network consists of site devices with some association within a specific coverage area.
  • One type of association is where sites communicate directly with each other in a self-organizing network; this is called an Independent Basic Service Set (IBSS).
  • IBSS Independent Basic Service Set
  • Another more common scenario is that in a BSS network, there is only one central site dedicated to managing the BSS, called the Access Point (AP) device, and all other STAs in the network are associated with it.
  • AP Access Point
  • terminals also known as non-AP STAs; terminals and non-AP STAs are collectively referred to as STAs.
  • STAs When describing STAs, it is not necessary to distinguish between terminals and non-AP STAs.
  • a STA cannot detect other STAs that are far away; they are each other's hidden nodes.
  • Figure 2 is a schematic diagram of one of the communication methods according to an embodiment of the present disclosure.
  • the method can be applied to a multi-link site device non-AP MLD102, such as non-AP MLD102 including non-AP STA1, non-AP STA2 and non-AP STA3 in Figure 1.
  • non-AP MLD102 including non-AP STA1, non-AP STA2 and non-AP STA3 in Figure 1.
  • the above method includes:
  • Step 201 A non-AP STA (e.g., any one of non-AP STA1, non-AP STA2, and non-AP STA3) attached to non-AP MLD102 initializes a transmission opportunity TXOP access channel under the first link, for example, by obtaining TXOP through EDCA (Enhanced Distributed Channel Access) contention.
  • EDCA Enhanced Distributed Channel Access
  • Step 202 There are periodic communication services of other communication media under the second link, and the first link and the second link are non-simultaneous sending and receiving NSTR link pairs.
  • the non-AP MLD adjustment is performed under the first link.
  • Terminal devices often support multiple wireless communication media simultaneously and integrate multiple wireless communication modules, enabling them to access multiple wireless networks simultaneously, such as WLAN, Bluetooth (BT), New Radio (NR), Long Term Evolution (LTE), and Global Navigation Satellite System (GNSS) technologies, or one or more of these. Therefore, terminal devices often contain...
  • IDC In-Device Coexistence
  • Wi-Fi and BitTorrent typically operate in the 2.4 GHz band, and due to factors such as device miniaturization and cost, many communication devices share the same antenna. Therefore, when Wi-Fi communication occurs between a single node or multiple nodes, communication services from other communication media can interfere with the device's current Wi-Fi communication, leading to low transmission efficiency, data packet loss, or even communication interruption.
  • the non-AP STA when a non-AP STA attached to a non-AP MLD is conducting Wi-Fi communication, when initializing the transmission opportunity TXOP access channel under the first link, the non-AP STA determines that there are periodic communication services of other communication media under the second link, so as to avoid the communication services of other communication media from affecting the Wi-Fi communication service under the first link.
  • the first link and the second link are NSTR link pairs.
  • a physical device can typically include multiple logical devices.
  • non-AP MLD102 includes non-AP STA1, non-AP STA2, and non-AP STA3 in Figure 1.
  • Each logical device can independently manage data transmission and reception, and each logical device operates independently on a link.
  • non-AP STA1 operates on link 1
  • non-AP STA2 operates on link 2
  • non-AP STA3 operates on link 3.
  • some multi-link devices have poor anti-interference performance of their transceivers.
  • NSTR link pairs Data transmission and reception between multiple links can cause significant interference, resulting in other links being unable to receive data when a multi-link device is transmitting data on one link.
  • These links are called NSTR link pairs. Taking a non-AP STA1 initializing a Transmission Opportunity (TXOP) access channel on link 1 (the first link) as an example, if link 1 and link 2 (the second link) are NSTR link pairs, then link 1 and link 2 cannot perform transmit and receive operations simultaneously.
  • TXOP Transmission Opportunity
  • communication services of other communication media may include periodic and non-periodic communication.
  • Periodic communication involves the repeated use of a medium for a certain duration at certain time intervals under a link.
  • a non-AP STA (taking non-AP STA1 as an example) attached to the non-AP MLD102 initializes the TXOP access channel under the first link, while periodic communication services of other communication media exist under the second link.
  • the first link and the second link are NSTR link pairs, and the TXOP of the first link overlaps with the periodic communication services of other communication media on the second link in time.
  • the non-AP MLD adjusts its operation under the first link, for example, by ending the TXOP early or entering a power saving (PS) mode during the overlapping time, to avoid interference from the communication services of other communication media on the current Wi-Fi communication, which could lead to low transmission efficiency, data packet loss, or even communication interruption.
  • PS power saving
  • the method can be applied to multi-link site equipment non-AP MLD102, such as non-AP MLD102 including non-AP STA1, non-AP STA2 and non-AP STA3 in Figure 1.
  • non-AP MLD102 including non-AP STA1, non-AP STA2 and non-AP STA3 in Figure 1.
  • the above method includes:
  • Step 301 A non-AP STA (e.g., any one of non-AP STA1, non-AP STA2, and non-AP STA3) attached to non-AP MLD102 initializes the Transmission Opportunity TXOP Access Channel under the first link.
  • a non-AP STA e.g., any one of non-AP STA1, non-AP STA2, and non-AP STA3 attached to non-AP MLD102 initializes the Transmission Opportunity TXOP Access Channel under the first link.
  • Step 302 If there are periodic communication services of other communication media under the second link, and the first link and the second link are non-simultaneous sending and receiving NSTR link pairs, the non-AP MLD terminates the TXOP of the first link in advance before the periodic communication service begins.
  • a non-AP STA attached to the non-AP MLD102 initializes the TXOP access channel under the first link, while there are periodic communication services of other communication media under the second link.
  • the first link and the second link are NSTR link pairs, and the TXOP of the first link overlaps with the periodic communication services of other communication media on the second link in time.
  • the non-AP MLD terminates the TXOP of the first link in advance. For example, it terminates the TXOP before the communication cycle of the periodic communication services of other communication media on the second link begins, so that the Wi-Fi communication ends before the arrival of other communication technologies under the other link, thus avoiding interference from the communication services of other communication media to the current Wi-Fi communication.
  • prematurely ending the TXOP of the first link requires time synchronization of the first and second links.
  • the non-AP MLD uses the maximum number of spatial streams (SS) or the maximum number of antennas
  • the first and second links may be out of sync.
  • the non-AP MLD then aligns the time of the first link with the time of the second link based on the switching delay between the first and second links to determine the time to end the TXOP of the first link, thus avoiding time asynchrony between the first and second links and resulting in inaccurate timing of prematurely ending the TXOP of the first link.
  • prematurely ending the TXOP can be achieved by sending the TXOP before the start of the periodic communication service. Implemented using truncation frames or CF end frames.
  • the method can be applied to multi-link site equipment non-AP MLD102, such as non-AP MLD102 including non-AP STA1, non-AP STA2 and non-AP STA3 in Figure 1.
  • non-AP MLD102 including non-AP STA1, non-AP STA2 and non-AP STA3 in Figure 1.
  • the above method includes:
  • Step 401 a non-AP STA (e.g., any one of non-AP STA1, non-AP STA2 and non-AP STA3) attached to non-AP MLD102 initializes the Transmission Opportunity TXOP Access Channel under the first link.
  • a non-AP STA e.g., any one of non-AP STA1, non-AP STA2 and non-AP STA3 attached to non-AP MLD102 initializes the Transmission Opportunity TXOP Access Channel under the first link.
  • Step 402 There are periodic communication services of other communication media under the second link, and the first link and the second link are non-simultaneous sending and receiving NSTR link pairs. During the communication time of the periodic communication service, the non-AP MLD enters the power-saving PS mode on the first link.
  • a non-AP STA attached to the non-AP MLD102 initializes the TXOP access channel under the first link, while there are periodic communication services of other communication media under the second link.
  • the first link and the second link are NSTR link pairs, and the TXOP of the first link and the periodic communication services of other communication media of the second link overlap in time.
  • the non-AP MLD enters PS mode on the first link, that is, the non-AP STA working on the first link enters PS mode, such as doze mode. When the STA enters doze mode, it cannot transmit or receive data and its power consumption is very low.
  • the method can be applied to multi-link site equipment non-AP MLD102, such as non-AP MLD102 including non-AP STA1, non-AP STA2 and non-AP STA3 in Figure 1.
  • non-AP MLD102 including non-AP STA1, non-AP STA2 and non-AP STA3 in Figure 1.
  • the above method includes:
  • Step 501 a non-AP STA (e.g., any one of non-AP STA1, non-AP STA2 and non-AP STA3) attached to non-AP MLD102 initializes the Transmission Opportunity TXOP Access Channel under the first link.
  • a non-AP STA e.g., any one of non-AP STA1, non-AP STA2 and non-AP STA3 attached to non-AP MLD102 initializes the Transmission Opportunity TXOP Access Channel under the first link.
  • Step 502 There are periodic communication services of other communication media under the second link, and the first link and the second link are non-simultaneous sending and receiving NSTR link pairs.
  • the non-AP MLD is in a blind state on the first link, and when the communication time of the periodic communication service ends, the medium access is restored on the first link.
  • a non-AP STA attached to the non-AP MLD102 initializes a TXOP access channel on the first link, while periodic communication services of other communication media exist on the second link.
  • the first and second links are NSTR link pairs, and the TXOP on the first link overlaps with the periodic communication services of other communication media on the second link in time.
  • the non-AP MLD enters a blind state on the first link, meaning the non-AP STA operating on the first link enters a blind state.
  • the STA for example, does not perform packet reception or channel access procedures to avoid interference from communication services of other communication media on the current Wi-Fi communication.
  • the periodic communication service's communication time it resumes medium access on the first link and continues Wi-Fi communication.
  • the method can be applied to multi-link site equipment non-AP MLD102, such as non-AP MLD102 including non-AP STA1, non-AP STA2 and non-AP STA3 in Figure 1.
  • non-AP MLD102 including non-AP STA1, non-AP STA2 and non-AP STA3 in Figure 1.
  • the above method includes:
  • Step 601 a non-AP STA (e.g., any one of non-AP STA1, non-AP STA2 and non-AP STA3) attached to non-AP MLD102 initializes the Transmission Opportunity TXOP Access Channel under the first link.
  • a non-AP STA e.g., any one of non-AP STA1, non-AP STA2 and non-AP STA3 attached to non-AP MLD102 initializes the Transmission Opportunity TXOP Access Channel under the first link.
  • Step 602 There are periodic communication services of other communication media under the second link, and the first link and the second link are non-simultaneous sending and receiving NSTR link pairs.
  • the non-AP STA will not transmit data during the TXOP period on the first link, or will terminate the TXOP of the first link early, or will reduce the data transmission power by a preset parameter value.
  • the non-AP STA operating on the first link needs to transmit data; and the periodic communication service also involves data transmission on the second link. Therefore, the non-AP STA can perform at least one of the following operations during the TXOP period (the overlapping time) on the first link:
  • the overlap time includes complete overlap or partial overlap.
  • the non-AP STA can regain the TXOP through contention after Medium recovery.
  • prematurely ending the TXOP can be achieved by sending a TXOP truncation frame or a CF end frame before the start of the periodic communication service.
  • the transmit power is reduced by a preset parameter value compared to before, such as 3dB or more; for example, if there is an interference level tolerance for periodic communication services, the Tx power is reduced accordingly to below the interference level tolerance.
  • the method can be applied to multi-link site equipment non-AP MLD102, such as non-AP MLD102 including non-AP STA1, non-AP STA2 and non-AP STA3 in Figure 1.
  • non-AP MLD102 including non-AP STA1, non-AP STA2 and non-AP STA3 in Figure 1.
  • the above method includes:
  • Step 701 A non-AP STA (e.g., any one of non-AP STA1, non-AP STA2, and non-AP STA3) attached to non-AP MLD102 initializes the Transmission Opportunity TXOP Access Channel under the first link.
  • a non-AP STA e.g., any one of non-AP STA1, non-AP STA2, and non-AP STA3 attached to non-AP MLD102 initializes the Transmission Opportunity TXOP Access Channel under the first link.
  • Step 702 If there are periodic communication services of other communication media under the second link, and the first link and the second link are non-simultaneous transmission and reception NSTR link pairs, during the TXOP period, a non-AP STA operating under the first link receives data, and the periodic communication service transmits or receives data on the second link, then before the data transmission or data reception operation on the second link, the non-AP STA sends a Block Ack (BA) message frame to the data transmission end of the non-AP STA.
  • the BA message frame indicates that the non-AP STA requests the data transmission end to terminate data transmission.
  • the non-AP STA is in the data receiving state under the first link, receiving data frames sent by the data sending end. Before the data sending or receiving operation of the second link, the non-AP STA sends a BA message frame to the data sending end.
  • the BA message frame indicates that other communication technologies are sending or receiving data frames, and the data sending end needs to stop sending to avoid interference with the communication services of other communication media.
  • the non-AP STA receives data, and the periodic communication service transmits data on the second link.
  • the BA message frame includes transmission duration information, and the BA message frame instructs the data sender to: enter a sleep state within the time specified by the transmission duration information; or, after the time specified by the transmission duration information, re-acquire TXOP for transmission according to the Enhanced Distributed Channel Access (EDCA) mechanism.
  • EDCA Enhanced Distributed Channel Access
  • the transmission duration information of the periodic communication service can be carried in the BA message frame, indicating that during this duration, the non-AP STA can enter sleep mode, or after this duration, it can regain TXOP for transmission according to the enhanced distributed channel access (EDCA) mechanism.
  • EDCA enhanced distributed channel access
  • the method may further include:
  • TSF time synchronization function
  • the method for obtaining the periodic communication time of other communication technologies can be that the non-AP STA under one link can determine the data transmission or data reception operation of the second link based on the data transmission operation information and data reception operation information periodically broadcast by the STA under other links (e.g., the STA working on the second link); and the communication time of the periodic communication service can be accurately obtained based on the periodic communication duration of other communication technologies broadcast by the STA working on the second link and the TSF offset.
  • the names of information, etc. are not limited to the names described in the embodiments.
  • Terms such as “information”, “message”, “signal”, “signaling”, “report”, “configuration”, “indication”, “instruction”, “command”, “channel”, “parameter”, “domain”, “field”, “symbol”, “codepoint”, “bit”, “data”, “program”, and “chip” can be used interchangeably.
  • terms such as “moment,” “point in time,” “time,” and “time location” can be used interchangeably, as can terms such as “duration,” “segment,” “time window,” “window,” and “time.”
  • wireless access scheme and waveform can be used interchangeably.
  • terms such as “certain,” “preset,” “default,” “set,” “indicated,” “a certain,” “any,” and “first” can be used interchangeably.
  • “Certain A,” “preset A,” “default A,” “set A,” “indicated A,” “a certain A,” “any A,” and “first A” can be interpreted as A pre-defined in a protocol or the like, or as A obtained through setting, configuration, or instruction, or as specific A, a certain A, any A, or first A, but are not limited thereto.
  • the determination or judgment can be made by a value represented by 1 bit (0 or 1), or by a true or false value (boolean), or by a comparison of numerical values (e.g., a comparison with a predetermined value), but is not limited thereto.
  • not expecting to receive can be interpreted as not receiving on time domain resources and/or frequency domain resources, or as not performing subsequent processing on the data after receiving it; "not expecting to send” can be interpreted as not sending, or as sending but not expecting the receiver to respond to the sent content.
  • step 201 can be implemented as an independent embodiment
  • step 202 can be implemented as an independent embodiment
  • step 301 can be implemented as an independent embodiment
  • step 302 can be implemented as an independent embodiment
  • step 401 can be implemented as an independent embodiment
  • step 402 can be implemented as an independent embodiment
  • step 501 can be implemented as an independent embodiment
  • step 502 can be implemented as an independent embodiment
  • step 601 can be implemented as an independent embodiment
  • step 602 can be implemented as an independent embodiment
  • step 701 can be implemented as an independent embodiment
  • step 702 can be implemented as an independent embodiment
  • the combination of steps 201 and 202 can be implemented as an independent embodiment
  • the combination of steps 301 and 302 can be implemented as an independent embodiment
  • the combination of steps 401 and 402 can be implemented as an independent embodiment
  • the combination of steps 501 and 502 can be implemented as an independent embodiment
  • the combination of steps 601 and 602 can be implemented as an independent embodiment
  • the combination of steps 701 and 701 can be implemented as an independent embodiment
  • Figure 8 is a flowchart illustrating one of the communication methods according to an embodiment of the present disclosure.
  • the above method can be applied to non-AP MLD102, and the method includes:
  • Step 801 Initialize the transmission opportunity TXOP access channel under the first link
  • Step 802 If there are periodic communication services of other communication media under the second link, and the first link and the second link are non-simultaneous sending and receiving NSTR link pairs, the non-APMLD adjustment is performed under the first link.
  • the operation of the non-AP MLD adjustment under the first link includes at least one of the following:
  • the TXOP of the first link is terminated in advance
  • the first link During the communication time of the periodic communication service, the first link enters a power-saving PS mode.
  • the first link is in a blind state, and when the communication time of the periodic communication service ends, the first link resumes media access.
  • the operation of the non-AP MLD adjustment under the first link includes at least one of the following:
  • the non-AP MLD will not send data during the TXOP period under the first link, or will terminate the TXOP of the first link early, or will reduce the data transmission power by a preset parameter value.
  • the non-AP MLD sends a Block Acknowledgment (BA) message frame to the data transmitter of the non-AP STA before the data transmission or reception operation on the second link.
  • the BA message frame indicates that the non-AP STA requests the data transmitter to terminate data transmission.
  • the non-AP STA receives data, and the periodic communication service transmits data on the second link.
  • the BA message frame includes transmission duration information, and the BA message frame instructs the data sender to: enter a sleep state within the time specified by the transmission duration information; or, after the time specified by the transmission duration information, re-acquire TXOP for transmission according to the Enhanced Distributed Channel Access (EDCA) mechanism.
  • EDCA Enhanced Distributed Channel Access
  • the early termination of the TXOP of the first link includes:
  • the non-AP MLD uses the maximum number of spatial streams (SS) or the maximum number of antennas to determine the time to end the TXOP of the first link based on the switching delay between the first link and the second link.
  • SS spatial streams
  • the method further includes:
  • Step 803 Receive data transmission/reception operation information, communication duration information, and time synchronization function offset (TSF) offset information broadcast by the STA operating on the second link;
  • TSF time synchronization function offset
  • Step 804 Determine whether the data transmission type of the periodic communication service is a sending operation or a receiving operation based on the data sending/receiving operation information; and determine the communication time of the periodic communication service based on the communication duration information and TSF offset information.
  • step 801 may be implemented as an independent embodiment
  • step 802 may be implemented as an independent embodiment
  • step 803 may be implemented as an independent embodiment
  • the combination of step 801 and step 802 may be implemented as an independent embodiment
  • the combination of step 803 and step 804 may be implemented as an independent embodiment, but is not limited thereto.
  • this disclosure provides the following embodiments.
  • Action (1) Based solely on periodic communication using other communication technologies, determine the STA's action on the first link:
  • the TXOP initialized by the STA under the first link will end before the arrival of other communication technologies under the second link.
  • the end time of the TXOP needs to take into account the handover delay between links (the handover delay is used for time synchronization between two links).
  • STAs under this link can enter PS mode, i.e., doze state, during the periodic communication time of other communication technologies under the second link;
  • Action (2) in addition to periodic communication based on other communication technologies, also determines the STA's action under the first link based on the STA's receiving or transmitting operations under the first link:
  • A-1 Do not send any data or terminate TXOP prematurely.
  • A-2 Reduce the transmit power or continue transmitting data frames on the first link, but reduce the Tx power by 3dB or more compared to before (if other technologies have interference level tolerance, the Tx power will be reduced accordingly).
  • the STA sends a BA to the data frame sender under the first link before (the data frame is transmitted by other communication technologies under the second link), indicating that there are other communication technologies sending/receiving data frames and that the transmission needs to be terminated.
  • the transmission duration information of those technologies can be carried, indicating whether the STA can enter sleep mode during this duration or whether the STA can reacquire TXOP and transmit after this duration according to the EDCA mechanism.
  • a STA on one link can accurately obtain time information based on the periodic communication duration of other communication technologies and the TSF offset broadcast by STAs on other links.
  • an apparatus for implementing any of the above methods.
  • an apparatus includes units or modules for implementing the steps performed by the terminal in any of the above methods.
  • another apparatus is provided, including components for implementing the above...
  • the unit or module of each step performed by a network device (e.g., access network device, core network functional node, core network device, etc.) in any method.
  • a network device e.g., access network device, core network functional node, core network device, etc.
  • the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated.
  • the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device.
  • the processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device.
  • the units or modules in the device can be implemented in the form of hardware circuits.
  • the functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors.
  • the hardware circuit is an application-specific integrated circuit (ASIC).
  • ASIC application-specific integrated circuit
  • the functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit.
  • the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.
  • PLD programmable logic device
  • the processor is a circuit with signal processing capabilities.
  • the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP).
  • the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable.
  • the processor is a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA.
  • ASIC application-specific integrated circuit
  • PLD programmable logic device
  • the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules.
  • it can also be hardware circuits designed for artificial intelligence, which can be understood as ASICs, such as Neural Network Processing Unit (NPU), Tensor Processing Unit (TPU), Deep Learning Processing Unit (DPU), etc.
  • ASICs such as Neural Network Processing Unit (NPU), Tensor Processing Unit (TPU), Deep Learning Processing Unit (DPU), etc.
  • Figure 9 is a schematic diagram of the structure of a communication device according to an embodiment of this disclosure.
  • the communication device 900 may include at least one of an access module 901, an adjustment module 902, etc.
  • the access module 901 is used to initialize the Transmission Opportunity (TXOP) access channel under the first link; the adjustment module 902 is used to adjust the operation under the first link when there are periodic communication services of other communication media under the second link, and the first link and the second link are non-simultaneous transmission and reception (NSTR) link pairs.
  • TXOP Transmission Opportunity
  • NSTR non-simultaneous transmission and reception
  • the access module 901 is used to execute at least one of the communication steps performed by the non-AP MLD 102 in any of the above methods (e.g., steps 201, 301, 401, 501, 601, 701, 801, but not limited thereto), which will not be described in detail here.
  • the adjustment module 902 is used to execute at least one of the communication steps performed by the non-AP MLD 102 in any of the above methods (e.g., steps 202, 302, 402, 502, 602, 702, 802, but not limited thereto), which will not be described in detail here.
  • Figure 10 is a schematic diagram of the structure of a terminal 1000 (e.g., a user equipment) proposed in an embodiment of this disclosure.
  • the terminal 1000 may be a chip, chip system, or processor that supports network devices in implementing any of the above methods, or it may be a chip, chip system, or processor that supports a terminal in implementing any of the above methods.
  • the terminal 1000 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.
  • terminal 1000 includes one or more processors 1001.
  • Processor 1001 can be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU).
  • the baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data.
  • Terminal 1000 is used to execute any of the above methods.
  • the terminal 1000 further includes one or more memories 1002 for storing instructions.
  • the memories 1002 may be located outside the terminal 1000.
  • the terminal 1000 further includes one or more transceivers 1004.
  • the transceivers 1004 perform at least one of the communication steps such as sending and/or receiving in the above-described method (e.g., step 804, but not limited thereto), and the processor 1001 performs other steps (e.g., steps 201, 202, 301, 302, 401, 402, 501, 502, 601, 602, 701, 702, 801, 802, . At least one of 803, but not limited to this.
  • a transceiver may include a receiver and/or a transmitter, which may be separate or integrated.
  • the terms transceiver, transceiver unit, transceiver, transceiver circuit, etc. may be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., may be used interchangeably; and the terms receiver, receiving unit, receiver, receiving circuit, etc., may be used interchangeably.
  • terminal 1000 may include one or more interface circuits 1003.
  • interface circuit 1003 is connected to memory 1002, and interface circuit 1003 can be used to receive signals from memory 1002 or other devices, and can be used to send signals to memory 1002 or other devices.
  • interface circuit 1003 can read instructions stored in memory 1002 and send the instructions to processor 1001.
  • the terminal 1000 described in the above embodiments may be a user equipment or other communication device, but the scope of the terminal 1000 described in this disclosure is not limited thereto, and the structure of the terminal 1000 may not be limited by FIG10.
  • the communication device may be an independent device or a part of a larger device.
  • the communication device may be: (1) an independent integrated circuit IC, or chip, or chip system or subsystem; (2) a set of one or more ICs, optionally, the IC set may also include storage components for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, smart terminal device, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.
  • Figure 11 is a schematic diagram of the structure of the chip 1100 proposed in an embodiment of this disclosure.
  • the terminal 1000 can be a chip or a chip system
  • the schematic diagram of the chip 1100 shown in Figure 11 can be referenced, but is not limited thereto.
  • Chip 1100 includes one or more processors 1101, which are used to perform any of the above methods.
  • chip 1100 further includes one or more 1103s.
  • interface circuitry 1103 is connected to memory 1102.
  • Interface circuitry 1103 can be used to receive signals from memory 1102 or other devices, and interface circuitry 1103 can be used to send signals to memory 1102 or other devices.
  • interface circuitry 1103 can read instructions stored in memory 1102 and send the instructions to processor 1101.
  • the interface circuit 1103 performs at least one of the communication steps such as sending and/or receiving in the above method (e.g., step 804, but not limited thereto), and the processor 1101 performs at least one of other steps (e.g., steps 201, 202, 301, 302, 401, 402, 501, 502, 601, 602, 701, 702, 801, 802, 803, but not limited thereto).
  • steps 201, 202, 301, 302, 401, 402, 501, 502, 601, 602, 701, 702, 801, 802, 803, but not limited thereto e.g., steps 201, 202, 301, 302, 401, 402, 501, 502, 601, 602, 701, 702, 801, 802, 803, but not limited thereto.
  • interface circuit In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, etc., can be used interchangeably.
  • chip 1100 further includes one or more memories 1102 for storing instructions.
  • all or part of the memories 1102 may be located outside of chip 1100.
  • the storage medium is an electronic storage medium.
  • the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices.
  • the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.
  • This disclosure also proposes a program product that, when executed by terminal 1000, causes terminal 1000 to perform any of the above methods.
  • the program product is a computer program product.
  • This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

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

Abstract

L'invention concerne un procédé de communication appliqué à un MLD non AP, qui est un dispositif de station à liaisons multiples, ainsi que des dispositifs de communication et un système de communication. Le procédé consiste à initialiser un canal d'accès aux opportunités de transmission (TXOP) sous une première liaison et, lorsqu'il existe des services de communication périodiques d'autres supports de communication sous une seconde liaison et que la première liaison et la seconde liaison constituent une paire de liaisons d'émission et de réception non simultanées (NSTR), un MLD non AP ajuste une opération sous la première liaison et met fin par exemple à une TXOP à l'avance ou bien entre dans un mode d'économie d'énergie pendant un temps de chevauchement. Ainsi, les interférences avec une communication Wi-Fi actuelle provenant des services de communication d'autres supports de communication, qui entraînent des situations telles qu'une faible efficacité de transmission, une perte de paquets de données, voire une interruption de communication, sont évitées.
PCT/CN2024/091419 2024-05-07 2024-05-07 Procédé de communication, dispositifs de communication et système de communication Pending WO2025231611A1 (fr)

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WO2022217612A1 (fr) * 2021-04-16 2022-10-20 Oppo广东移动通信有限公司 Procédé et dispositif de communication sans fil
US20220345973A1 (en) * 2021-04-22 2022-10-27 Sony Group Corporation Secondary link access to a mobile soft access point multi-link device
CN115486195A (zh) * 2020-05-04 2022-12-16 韦勒斯标准与技术协会公司 使用多个链路的无线通信方法和使用该方法的无线通信终端
CN115943679A (zh) * 2020-08-19 2023-04-07 现代自动车株式会社 用于在支持多个链路的通信系统中省电的方法和装置

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Publication number Priority date Publication date Assignee Title
CN115486195A (zh) * 2020-05-04 2022-12-16 韦勒斯标准与技术协会公司 使用多个链路的无线通信方法和使用该方法的无线通信终端
CN115943679A (zh) * 2020-08-19 2023-04-07 现代自动车株式会社 用于在支持多个链路的通信系统中省电的方法和装置
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