WO2023023948A1 - 通信方法和通信装置 - Google Patents

通信方法和通信装置 Download PDF

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Publication number
WO2023023948A1
WO2023023948A1 PCT/CN2021/114342 CN2021114342W WO2023023948A1 WO 2023023948 A1 WO2023023948 A1 WO 2023023948A1 CN 2021114342 W CN2021114342 W CN 2021114342W WO 2023023948 A1 WO2023023948 A1 WO 2023023948A1
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Prior art keywords
connection
tim
frame
communication
message
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PCT/CN2021/114342
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English (en)
French (fr)
Inventor
董贤东
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北京小米移动软件有限公司
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Priority to CN202180002532.7A priority Critical patent/CN116018826A/zh
Priority to PCT/CN2021/114342 priority patent/WO2023023948A1/zh
Publication of WO2023023948A1 publication Critical patent/WO2023023948A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/04Error control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements

Definitions

  • the present disclosure relates to the field of wireless communication, and more specifically, to a communication method and a communication device.
  • Wi-Fi technology 320MHz bandwidth transmission, aggregation and coordination of multiple frequency bands, etc. It is expected to increase the rate and throughput by at least four times compared with the existing standards. Its main application scenarios are Video transmission, AR (Augmented Reality, augmented reality), VR (Virtual Reality, virtual reality), etc.
  • the aggregation and coordination of multiple frequency bands refers to the simultaneous communication between devices in the 2.4GHz, 5GHz, and 6GHz frequency bands.
  • a new MAC Media Access Control
  • a new MAC Media Access Control
  • the current multi-band aggregation and system technology will support a maximum bandwidth of 320MHz (160MHz+160MHz), and may also support 240MHz (160MHz+80MHz) and other bandwidths.
  • the station (STA: Station) and the access point (AP: Access Point) can be a multi-link device (MLD: multi-link device), that is, a device that supports sending and/or receiving under multiple connections Function. Therefore, in the current technology, there may be multiple connections between the STA and the AP, and the communication between the two devices under the multiple connections is being researched.
  • MLD multi-link device
  • a communication method is provided according to an example embodiment of the present disclosure.
  • the communication method may be applied to a station device supporting multi-connection communication, and includes: under a first connection among multiple connections, determining a first message frame, wherein the first message frame includes: the station device requests The first information of the communication indication message TIM frame broadcast interval related to the multiple connections, wherein the multiple connections refer to the establishment between the station device and the associated access point device supporting multi-connection communication multiple connections; sending the first message frame.
  • a communication method is provided according to an example embodiment of the present disclosure.
  • the communication method may be applied to an access point device supporting multi-connection communication, and includes: receiving a first message frame under a first connection among multiple connections, wherein the first message frame includes: The first information of the communication indication message TIM frame broadcast interval related to the multiple connections requested by the station device supporting multi-connection communication associated with the access point device, wherein the multiple connections refer to the communication between the station device and Multiple connections established between the access point devices; performing a communication operation based on the first message frame.
  • a communication device may be applied to a station device supporting multi-connection communication, and includes: a processing module configured to: determine a first message frame under a first connection among multiple connections, wherein the first message frame Including: the first information of the communication indication message TIM frame broadcast interval related to the multiple connections requested by the site device, where the multiple connections refer to the communication between the site device and the associated multi-connection support Multiple connections established between access point devices; a transceiver module configured to: send the first message frame.
  • a communication device may be applied to an access point device supporting multi-connection communication, and includes: a transceiver module configured to: receive a first message frame under a first connection among multiple connections, wherein the first The message frame includes: the first information of the communication instruction message TIM frame broadcast interval related to the multiple connections requested by the station device associated with the access point device supporting multi-connection communication, wherein the multiple connections are Refers to multiple connections established between the station device and the access point device; a processing module configured to: control execution of a communication operation based on the first message frame.
  • an electronic device includes a memory, a processor, and a computer program stored on the memory and executable on the processor.
  • the processor implements the above method when executing the computer program.
  • a computer-readable storage medium storing instructions for performing various operations.
  • a computer program is stored on the computer readable storage medium.
  • the computer program is executed by the processor, the above-mentioned method is realized.
  • FIG. 1 is an exemplary diagram illustrating a communication scenario under multiple connections.
  • FIG. 2 is a flowchart illustrating a communication method according to an embodiment of the present disclosure.
  • FIG. 3 is a flowchart illustrating interactive communication according to an embodiment of the present disclosure.
  • FIG. 4 is a flowchart illustrating a communication method according to an embodiment of the present disclosure.
  • FIG. 5 is a block diagram illustrating a communication device according to an embodiment of the present disclosure.
  • FIG. 1 is an exemplary diagram illustrating a communication scenario under multiple connections.
  • a basic service set may consist of an AP and one or more stations (STA) communicating with the AP.
  • a basic service set can be connected to the distribution system DS (Distribution System) through its AP, and then connected to another basic service set to form an extended service set ESS (Extended Service Set).
  • DS Distribution System
  • ESS Extended Service Set
  • An AP is a wireless switch for a wireless network and also an access device for a wireless network.
  • AP equipment can be used as a wireless base station, mainly used as a bridge for connecting wireless networks and wired networks. With this access point AP, wired and wireless networks can be integrated.
  • the AP may include software applications and/or circuitry to enable other types of nodes in the wireless network to communicate with the outside and inside of the wireless network through the AP.
  • the AP may be a terminal device or a network device equipped with a Wi-Fi (Wireless Fidelity, wireless fidelity) chip.
  • Wi-Fi Wireless Fidelity, wireless fidelity
  • stations may include, but are not limited to: cellular phones, smart phones, wearable devices, computers, personal digital assistants (PDAs), personal communication system (PCS) devices, personal information managers (PIMs), personal navigation devices (PND), GPS, multimedia devices, Internet of Things (IoT) devices, etc.
  • PDAs personal digital assistants
  • PCS personal communication system
  • PIMs personal information managers
  • PND personal navigation devices
  • GPS GPS
  • multimedia devices Internet of Things (IoT) devices, etc.
  • IoT Internet of Things
  • APs and STAs may support multi-connected devices, for example, may be denoted as AP MLD and non-AP STA MLD, respectively.
  • AP MLD multi-connected devices
  • non-AP STA MLD multi-connected devices
  • multi-connection communication an example in which an AP MLD communicates with a non-AP STA MLD under multiple connections (hereinafter may be referred to as "multi-connection communication") is mainly described.
  • multi-connection communication an example in which an AP MLD communicates with a non-AP STA MLD under multiple connections
  • exemplary embodiments of the present disclosure are not limited to Therefore, for example, an AP MLD can perform multi-connection communication with multiple non-AP STA MLDs respectively, or a non-AP STA MLD can perform multi-connection communication with different AP MLDs.
  • the AP MLD may represent an access point supporting a multi-connection communication function
  • the non-AP STA MLD may represent a station supporting a multi-connection communication function.
  • AP MLD can work under three connections, as shown in Figure 1, including three subsidiary access points AP1, AP2 and AP3, and non-AP STA MLD can also work under three connections, as shown in Figure 1 Shown are STA1 , STA2 and STA3 including three affiliated stations.
  • AP1 and STA1 communicate through the corresponding first link Link 1.
  • AP2 and AP3 communicate with STA2 and STA3 through the second link Link 2 and the third link Link 3 respectively.
  • Link 1 to Link 3 can be multiple connections at different frequencies, for example, connections at 2.4GHz, 5GHz, and 6GHz, or several connections at the same or different bandwidths at 2.4GHz, 5GHz, and 6GHz. Additionally, multiple channels can exist under each connection.
  • the communication scenario shown in FIG. 1 is only exemplary, and the inventive concept is not limited thereto.
  • the AP MLD and the non-AP STA MLD may communicate under more or fewer connections, Either an AP MLD can connect to multiple non-AP STA MLDs, or under each connection, an AP can communicate with multiple other types of stations.
  • the AP MLD can send a traffic indication message (TIM, traffic indication map) frame to indicate that its BSS parameters have changed. For example, when a critical update occurs to any element in a beacon frame, the AP MLD will increase the value of the Check Beacon field in the TIM frame sent next (modulo 256). According to an embodiment of the present disclosure, the following events regarding the operating parameters of the access point will be classified as critical updates:
  • n Contains the BSS Color Change Announcement element (Inclusion of the BSS Color Change Announcement element), etc.
  • the prior art lacks a method of how to monitor TIM frames under multiple connections.
  • the existing mechanism is only applicable to communication operations under a single connection.
  • it may listen to beacon frames or TIM frames under different connections, so it needs to be negotiated under different connections (For example, negotiating through a re-association/association (re-association/association) process or sending a TIM broadcast request frame), so the existing mechanism needs to be enhanced.
  • FIG. 2 is a flowchart illustrating a communication method according to an embodiment of the present disclosure.
  • the communication method shown in FIG. 2 can be applied to a station device supporting multi-connection communication (for example, non-AP STA MLD).
  • a station device supporting multi-connection communication for example, non-AP STA MLD.
  • a first message frame is determined.
  • the first message frame may include: first information of a communication indication message (TIM) frame broadcast interval related to multiple connections requested by the site device.
  • TIM communication indication message
  • multiple connections refer to multiple connections established between the station device and the associated access point device supporting multi-connection communication.
  • multiple links may refer to Link1 to Link3, and the first link may be one of Link1 to Link3.
  • the first message frame may be generated according to at least one of the following conditions: network conditions, load conditions, hardware capabilities of sending/receiving devices , business type, and related agreement provisions; this embodiment of the present disclosure does not make specific limitations.
  • the first message frame may also be acquired from an external device, which is not specifically limited in this embodiment of the present disclosure.
  • the first message frame may be a reassociation request frame, an association request frame, a TIM broadcast request frame, and the like.
  • the present disclosure is not limited thereto, and other types of frames that can carry the first information are also feasible.
  • the first information may include information about TIM frame broadcast intervals related to multiple connections requested by the station device.
  • the TIM frame here is lightweight, that is, it only carries necessary information such as used to identify the existence of BSS parameter changes, for example, compared to carrying multiple connection (ML) information elements, various capability information elements, etc.
  • the TIM frame may only carry TIM information and check beacon (check beacon) and other information.
  • the first information may include a setting value of a TIM frame broadcast interval under the first connection, where the TIM frame broadcast interval may indicate the number of beacon frame periods between TIM frame transmissions.
  • the set value of the TIM frame broadcast interval under the first connection may be based on the beacon frame period under the first connection. For example, as described in conjunction with Figure 1, when the first connection is Link2, if the setting value of the TIM frame broadcast interval under the first connection is n (n is an integer greater than or equal to 1), the TIM frame broadcast interval can refer to n The period for transmitting beacon frames under Link2, that is, one TIM frame is transmitted after n such periods.
  • the station can monitor the TIM frame periodically, so as to determine whether the BSS parameter changes, for example.
  • the first information may be at the MLD level, in other words, the first message frame only carries the TIM frame broadcast interval for one connection (the first connection), and does not carry TIM frames under other connections among the multiple connections broadcast interval, but the TIM frame broadcast interval under other connections can be determined according to the setting value of the TIM frame broadcast interval under the first connection.
  • the TIM frame broadcast interval values of other connections except the first connection among the multiple connections have a specific offset value from the set value of the TIM frame broadcast interval under the first connection.
  • the specific offset value can be carried in other information elements (for example, reduced neighbor report (RNRE) information element, multiple connection (ML) information element, etc.) transmitted between non-AP STA MLD and AP MLD.
  • RRE reduced neighbor report
  • ML multiple connection
  • the first information may be encapsulated in the first message frame in various forms.
  • the first information is described in the form of information elements, for example, the first information may have the form of a TIM broadcast request information element (TIM broadcast request element) as shown in Table 1 below. Therefore, in the following, the first information and the TIM broadcast request information elements can be mixed.
  • TIM broadcast request element TIM broadcast request element
  • the Element ID (Element ID) field can be used to identify the TIM broadcast request information element
  • the Length (Length) field can indicate the length of the TIM broadcast request information element
  • the TIM Broadcast Interval (TIM Broadcast Interval) field can indicate that the TIM frame is sent The number of periods between beacon frames.
  • the value of the TIM broadcast interval (TIM Broadcast Interval) field in Table 1 may be an example of the setting value of the TIM frame broadcast interval under the first connection included in the first information.
  • TIM Broadcast Interval can be mixed with TIM frame broadcast interval.
  • the STA attached to the non-AP STA MLD carries the TIM broadcast request information element during the multi-connection establishment process (for example, association request frame), where the TIM broadcast interval setting in the TIM broadcast request information element The value is based on the beacon frame period under this connection.
  • the first information may include a setting value of a TIM frame broadcast interval under each of the multiple connections.
  • the first information may further include connection identification information used to identify each of the multiple connections.
  • the first information may be at a connection level, that is, the first information may include setting values of TIM frame broadcast intervals respectively corresponding to multiple connections. If the TIM broadcast request information element is used as an example to describe the first information, the TIM broadcast request information element may have the format shown in Table 2 below.
  • the element ID (Element ID) field and the length (Length) field in Table 2 are similar to Table 1, and repeated descriptions are omitted here to avoid redundancy.
  • TIM Broadcast Interval 1 (TIM Broadcast Interval 1) domain
  • TIM Broadcast Interval 2 (TIM Broadcast Interval 2) domain, etc.
  • the connection identification 1 (Link ID 1) field
  • the connection identification 2 (Link ID 2) field, etc.
  • each connection identifier (Link ID 1, Link ID 2, etc.) may have multiple bits to identify the combined information of the working frequency spectrum, bandwidth/channel, and BSSID (basis service set identifier).
  • BSSID basic service set identifier
  • the example of the connection identification information is not limited to the connection identification Link ID 1, Link ID 2, etc.
  • connection identification information can be a connection group (Link set), and the Link set can have multiple bits, each bit The bit corresponds to the corresponding connection in the multiple connections, and the multiple TIM broadcast interval fields in Table 2 may respectively correspond to the corresponding bits in the link set (Link set).
  • connection identification information may also be omitted from Table 2. For example, when the first information is to request TIM frame broadcast intervals under all multiple connections, multiple TIM broadcast interval fields may be carried in a specific order (for example, according to the order determined by the bandwidth of each connection).
  • a first message frame may be sent.
  • a first message frame may be sent under a first connection.
  • the present disclosure is not limited thereto, and the first message frame may also be sent under any one of multiple connections.
  • the communication method according to the embodiment of the present disclosure may carry the broadcast interval information of the TIM frame under the current connection or multiple connections requested by the site device supporting multi-connection communication under one connection.
  • FIG. 2 shows a flowchart of interactive communication according to an embodiment of the present disclosure.
  • step 310 and step 320 may correspond to steps 210 and 220 in FIG. 2 , so the descriptions with reference to FIG. 2 and Table 1 and Table 2 may be cited here, and repeated descriptions are omitted for brevity.
  • the station device may receive a second message frame from the access point device (AP MLD).
  • AP MLD access point device
  • one affiliated STA of the non-AP STA MLD may receive the second message frame from the corresponding affiliated AP of the AP MLD under one connection (the first connection).
  • the second message frame may be determined by the access point device according to the first message frame transmitted in step 320 (step 330).
  • the second message frame may include feedback information of the access point device for the first message.
  • the feedback information may be carried in the second message frame in the form of a TIM broadcast response information element (TIM Broadcast response element).
  • the second message frame may be a reassociation response frame, an association response frame, a TIM broadcast response frame, and the like.
  • the feedback information may include: status information indicating acceptance of the first message.
  • the feedback information may include second information about TIM frame broadcast intervals related to multiple connections recommended (or suggested, set) by the access point device, where In some cases, the second information in the second message frame may have a format corresponding to the first information in the first message frame.
  • the second information in the second message frame may include the recommended first The setting value of the TIM frame broadcast interval under a connection.
  • the second information may be included in the TIM broadcast response information element in the format shown in Table 3 below.
  • the element identification field and the length field can respectively identify the TIM broadcast response information element and length.
  • the status (Status) field may identify whether the access point device accepts the first information carried in the first message frame. When the Status field indicates acceptance, the TIM Broadcast Interval field may be omitted. When the status (Status) field indicates rejection, it may further include a TIM Broadcast Interval (TIM Broadcast Interval) field, for example, in the case where the first message indicates the TIM frame broadcast interval under the first connection of the MLD level, the second message frame
  • the TIM broadcast interval (TIM Broadcast Interval) field in may identify the TIM frame broadcast interval under the first connection recommended by the access point device.
  • the setting value of the TIM broadcast interval field in the second message frame may be similar to the setting value of the TIM broadcast interval field in Table 1, and for the sake of brevity, repeated descriptions are omitted here.
  • the TIM Broadcast Response information element may also include a TIM Broadcast Offset (TIM Broadcast Offset) field, a high rate TIM rate (High Rate TIM Rate) field, low rate TIM rate (Low Rate TIM Rate) field.
  • the TIM Broadcast Offset (TIM Broadcast Offset) field may include a time offset relative to the TBTT when the TIM frame is sent, for example, its unit is microsecond, and may have a tolerance of ⁇ 4us.
  • the High Rate TIM Rate field may provide an indicator of the rate at which High Data Rate TIM frames are sent.
  • the Low Rate TIM Rate field provides an indicator of the rate at which low data rate TIM frames are sent.
  • the second message in the second message frame may include a recommended setting value of a TIM frame broadcast interval under each of the plurality of connections.
  • the second information may further include connection identification information used to identify each of the multiple connections.
  • a TIM Broadcast Response information element as an example of the second information may have a format as shown in Table 4 below.
  • the element identification field and the length field may respectively identify the TIM broadcast response information element and length.
  • the status (Status) field may identify whether the access point device accepts the first information carried in the first message frame. When the status (Status) field indicates acceptance, each TIM Broadcast Interval (TIM Broadcast Interval) field and each connection identification (Link ID) field can be omitted. When the status (Status) field indicates rejection, it may further include a TIM frame broadcast interval under each of the multiple connections, for example, TIM Broadcast Interval 1, TIM Broadcast Interval 2, etc. "Link ID 1, Link ID 2", etc. in Table 4 may be an example of connection identification information for each of a plurality of connections. However, the present disclosure is not limited thereto, and the connection identification information may be carried in a link set (Link set) manner as described with reference to Table 2.
  • the state (Status) field can indicate the TIM frame broadcast interval of all connections requested by the first information in the first message frame to receive or reject, in this case, table 4 can only include one state (Status) )area.
  • there may be multiple status (Status) fields in Table 4 and each status field may correspond to one of the multiple connections to indicate whether to accept the TIM frame broadcast interval requested under the corresponding connection.
  • the TIM broadcast response element shown in Table 4 may also optionally include a TIM broadcast offset (TIM Broadcast Offset) domain, a high rate TIM rate (High Rate TIM Rate) domain, a low rate TIM rate ( Low Rate TIM Rate) fields, they can be MLD level or connection level.
  • the TIM broadcast request information element is at the MLD level.
  • the STA attached to the non-AP STA MLD carries the TIM broadcast request information element during the multi-connection establishment process (for example, association request frame), wherein, the TIM broadcast interval in the TIM broadcast request information element
  • the setting value of is based on the beacon frame period under this connection.
  • the AP attached to the AP MLD replies such as an association response frame to the STA attached to the non-AP STA MLD under this connection, including fields such as status (Status), wherein, if the Status field is set to "accept (accept) )", it does not include the TIM broadcast interval domain, if it is set to "reject (reject)", it includes the TIM broadcast interval domain.
  • This embodiment can be applied to TIM broadcast request frames.
  • the TIM broadcast request information element is connection level.
  • the TIM broadcast request frame (or (re)association request frame) includes the TIM broadcast interval information element under each connection, which corresponds to the Link ID.
  • the TIM broadcast interval information element under each connection is also included in the TIM broadcast response frame ((or, (re)association response frame)), which corresponds to the Link ID.
  • the TIM broadcast interval information element also includes a Status field. If the Status field indicates that it is not accepted, it may contain a recommended TIM broadcast interval field. This embodiment can be applied to the multi-connection establishment process.
  • the non-AP STA MLD and the AP MLD can negotiate the broadcast interval of the TIM frame through steps 310 to 340, for example, during the multi-connection establishment process, so that the non-AP STA MLD can communicate according to the broadcast interval of the negotiated TIM frame TIM frame is monitored (step 350) to obtain the change of BSS parameter information to meet the requirement of multi-connection communication.
  • FIG. 4 is a flowchart illustrating a communication method according to an embodiment of the present disclosure.
  • the communication method shown in FIG. 4 can be applied to an access point device (for example, AP MLD) that supports multi-connection communication.
  • AP MLD access point device
  • a first message frame is received, wherein the first message frame may include: a station device associated with the access point device that supports multi-connection communication
  • the first information may include a setting value of a TIM frame broadcast interval under the first connection, wherein the TIM frame broadcast interval indicates the number of beacon frame periods between TIM frame transmissions, wherein the first connection
  • the setting value of the TIM frame broadcast interval under is based on the beacon frame period under the first connection.
  • the values of TIM frame broadcast intervals of connections other than the first connection among the plurality of connections may have a specific offset value from the set value of the TIM frame broadcast interval under the first connection.
  • the first information may include a setting value of a TIM frame broadcast interval under each of the multiple connections.
  • the first information may further include connection identification information for identifying each of the multiple connections.
  • the first message frame and the first information in step 410 may be similar to the embodiment described with reference to FIG. 2 and Tables 1 and 2, and detailed descriptions are omitted here for brevity.
  • a communication operation is performed based on the first message frame. For example, it may be determined whether to accept the first information in the first message frame, and steps 330 and 340 performed by the AP MLD described with reference to FIG. 3 may be performed.
  • the access point device may send a second message frame to the station device, where the second message frame includes feedback information of the access point device for the first message.
  • the feedback information may include: status information indicating acceptance of the first message.
  • the feedback information may include: second information about TIM frame broadcast intervals related to multiple connections recommended by the access point device.
  • the second information may include a recommended setting value of the TIM frame broadcast interval under the first connection.
  • the second information may include the recommended TIM frame broadcast interval under each of the multiple connections.
  • the setting value of TIM frame broadcast interval may include the following TIM frame broadcast interval.
  • the second information may further include connection identification information for identifying each of the multiple connections.
  • the second message frame and the second information herein may be similar to the embodiment described with reference to FIG. 3 and Tables 3 and 4, and detailed descriptions are omitted here for brevity.
  • FIG. 5 is a block diagram illustrating a communication device 500 according to an embodiment of the present disclosure.
  • a communication device 500 may include a processing module 510 and a transceiving module 520 .
  • the communication device shown in FIG. 5 can be applied to AP MLD or non-AP STA MLD.
  • the processing module 510 may be configured to: determine a first message frame under a first connection among multiple connections, wherein the first message frame Including: the first information of the communication instruction message TIM frame broadcast interval requested by the station device related to multiple connections, where the multiple connections refer to the establishment between the station device and the associated access point device supporting multi-connection communication Multiple connections; the transceiving module 520 may be configured to: send the first message frame.
  • the communication device 500 may perform the communication method described with reference to FIG. 2 and the operations performed by the non-AP STA MLD in FIG. 3 , and repeated descriptions are omitted here for brevity.
  • the transceiver module 520 may be configured to: receive a first message frame under a first connection among multiple connections, wherein the first message frame includes: The first information of the communication indication message TIM frame broadcast interval related to multiple connections requested by the station device supporting multi-connection communication associated with the access point device, where the multiple connections refer to the communication between the station device and the access point device Multiple connections established; the processing module 510 may be configured to: control the execution of the communication operation based on the first message frame.
  • the communication device 500 may perform the communication method described with reference to FIG. 4 and the operations performed by the AP MLD in FIG. 4 , and repeated descriptions are omitted here for brevity.
  • the communication device 500 shown in FIG. 5 is only exemplary, and embodiments of the present disclosure are not limited thereto.
  • the communication device 500 may also include other modules, such as a memory module.
  • various modules in the communication device 500 may be combined into more complex modules, or may be divided into more individual modules.
  • the communication method and communication device can negotiate the broadcast interval of the TIM frame, so that the non-AP STA MLD can listen to the TIM frame according to the negotiated broadcast interval of the TIM frame to obtain the change of the BSS parameter information, Meet the needs of multi-connection communication.
  • the embodiments of the present disclosure also provide an electronic device, which includes a processor and a memory; wherein, the memory stores machine-readable instructions (may also be referred to as the “computer program”); a processor for executing machine-readable instructions to implement the methods described with reference to FIGS. 2-4 .
  • the memory stores machine-readable instructions (may also be referred to as the “computer program”); a processor for executing machine-readable instructions to implement the methods described with reference to FIGS. 2-4 .
  • Embodiments of the present disclosure also provide a computer-readable storage medium, on which a computer program is stored.
  • a computer program is stored.
  • the methods described with reference to FIGS. 2 to 4 are implemented.
  • a processor may be used to implement or execute various exemplary logical blocks, modules and circuits described in conjunction with the present disclosure, for example, CPU (Central Processing Unit, central processing unit), general processing DSP (Digital Signal Processor, Data Signal Processor), ASIC (Application Specific Integrated Circuit, Application Specific Integrated Circuit), FPGA (Field Programmable Gate Array, Field Programmable Gate Array) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof.
  • the processor may also be a combination that implements computing functions, for example, a combination of one or more microprocessors, a combination of DSP and a microprocessor, and the like.
  • the memory may be, for example, ROM (Read Only Memory, Read Only Memory), RAM (Random Access Memory, Random Access Memory), EEPROM (Electrically Erasable Programmable Read Only Memory, Electrically Erasable Programmable Only Memory) read memory), CD-ROM (Compact Disc Read Only Memory, read-only disc) or other optical disc storage, optical disc storage (including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), magnetic disk storage medium or other magnetic A storage device, or any other medium that can be used to carry or store program code in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto.
  • ROM Read Only Memory, Read Only Memory
  • RAM Random Access Memory
  • EEPROM Electrically Erasable Programmable Only Memory
  • CD-ROM Compact Disc Read Only Memory, read-only disc
  • optical disc storage including compact disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.
  • magnetic disk storage medium or other magnetic A storage device or any other medium that

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Abstract

本公开提供一种通信方法和通信装置。所述通信方法可以包括:在多个连接中的第一连接下,确定第一消息帧,其中,所述第一消息帧包括:所述站点设备请求的与所述多个连接有关的通信指示消息(TIM)帧广播间隔的第一信息,其中,所述多个连接是指在所述站点设备与关联的支持多连接通信的接入点设备之间建立的多个连接;发送所述第一消息帧。

Description

通信方法和通信装置 技术领域
本公开涉及无线通信领域,更具体地说,涉及一种通信方法和通信装置。
背景技术
目前的Wi-Fi技术所研究的范围为:320MHz的带宽传输、多个频段的聚合及协同等,期望能够相对于现有的标准提高至少四倍的速率以及吞吐量,其主要的应用场景为视频传输、AR(Augmented Reality,增强现实)、VR(Virtual Reality,虚拟现实)等。
多个频段的聚合及协同是指设备间同时在2.4GHz、5GHz及6GHz等的频段下进行通信,对于设备间同时在多个频段下通信需要定义新的MAC(Media Access Control,介质访问控制)机制来进行管理。此外,还期望多频段的聚合及协同能够支持低时延传输。
目前多频段的聚合及系统技术中将支持的最大带宽为320MHz(160MHz+160MHz),此外还可能会支持240MHz(160MHz+80MHz)及其它带宽。
在目前的技术中,站点(STA:Station)和接入点(AP:Access Point)可以是多连接设备(MLD:multi-link device),即,支持在多连接下进行发送和/或接收的功能。因此,在目前的技术中,STA与AP之间可以存在多个连接,并且正在对这两种设备在多连接下的通信进行研究。
发明内容
本公开的各方面将至少解决上述问题和/或缺点。本公开的各种实施例提供以下技术方案:
根据本公开的示例实施例提供一种通信方法。所述通信方法可以应用 于支持多连接通信的站点设备,并且包括:在多个连接中的第一连接下,确定第一消息帧,其中,所述第一消息帧包括:所述站点设备请求的与所述多个连接有关的通信指示消息TIM帧广播间隔的第一信息,其中,所述多个连接是指在所述站点设备与关联的支持多连接通信的接入点设备之间建立的多个连接;发送所述第一消息帧。
根据本公开的示例实施例提供一种通信方法。所述通信方法可以应用于支持多连接通信的接入点设备,并且包括:在多个连接中的第一连接下,接收第一消息帧,其中,所述第一消息帧包括:与所述接入点设备关联的支持多连接通信的站点设备请求的与所述多个连接有关的通信指示消息TIM帧广播间隔的第一信息,其中,所述多个连接是指在所述站点设备与所述接入点设备之间建立的多个连接;基于所述第一消息帧执行通信操作。
根据本公开的示例实施例提供一种通信装置。所述通信装置可以应用于支持多连接通信的站点设备,并且包括:处理模块,被配置为:在多个连接中的第一连接下,确定第一消息帧,其中,所述第一消息帧包括:所述站点设备请求的与所述多个连接有关的通信指示消息TIM帧广播间隔的第一信息,其中,所述多个连接是指在所述站点设备与关联的支持多连接通信的接入点设备之间建立的多个连接;收发模块,被配置为:发送所述第一消息帧。
根据本公开的示例实施例提供一种通信装置。所述通信装置可以应用于支持多连接通信的接入点设备,并且包括:收发模块,被配置为:在多个连接中的第一连接下,接收第一消息帧,其中,所述第一消息帧包括:与所述接入点设备关联的支持多连接通信的站点设备请求的与所述多个连接有关的通信指示消息TIM帧广播间隔的第一信息,其中,所述多个连接是指在所述站点设备与所述接入点设备之间建立的多个连接;处理模块,被配置为:基于所述第一消息帧控制通信操作的执行。
根据本公开的示例实施例提供了一种电子装置。所述电子装置包括存储器、处理器及存储在所述存储器上并在所述处理器上可运行的计算机程序。所述处理器执行所述计算机程序时实现如上所述的方法。
根据本公开的示例实施例提供了一种计算机可读存储介质。所述计算 机可读存储介质上存储有计算机程序。该计算机程序被处理器执行时实现如上所述的方法。
附图说明
通过参照附图详细描述本公开的示例实施例,本公开实施例的上述以及其他特征将更加明显,其中:
图1是示出多连接下的通信场景的示例性示图。
图2是示出根据本公开实施例的通信方法的流程图。
图3是示出根据本公开实施例的交互通信的流程图。
图4是示出根据本公开实施例的通信方法的流程图。
图5是示出根据本公开实施例的通信装置的框图。
具体实施方式
提供以下参照附图的描述,以帮助全面理解由所附权利要求及其等同物限定的本公开的各种实施例。本公开的各种实施例包括各种具体细节,但是这些具体细节仅被认为是示例性的。此外,为了清楚和简洁,可以省略对公知的技术、功能和构造的描述。
在本公开中使用的术语和词语不限于书面含义,而是仅被发明人所使用,以能够清楚和一致的理解本公开。因此,对于本领域技术人员而言,提供本公开的各种实施例的描述仅是为了说明的目的,而不是为了限制的目的。
应当理解,除非上下文另外清楚地指出,否则这里使用的单数形式“一”、“一个”、“所述”和“该”也可以包括复数形式。应该进一步理解的是,本公开中使用的措辞“包括”是指存在所描述的特征、整数、步骤、操作、元件和/或组件,但是并不排除存在或添加一个或多个其他特征、整数、步骤、操作、元件、组件和/或它们的组。
将理解的是,尽管术语“第一”、“第二”等在本文中可以用于描述各种元素,但是这些元素不应受这些术语的限制。这些术语仅用于将一个元素与另一个元素区分开。因此,在不脱离示例实施例的教导的情况下,下面讨论的第一元素可以被称为第二元素。
应该理解,当元件被称为“连接”或“耦接”到另一元件时,它可以直接连接或耦接到其他元件,或者也可以存在中间元件。此外,这里使用的“连接”或“耦接”可以包括无线连接或无线耦接。这里使用的术语“和/或”或者表述“……中的至少一个/至少一者”包括一个或多个相关列出的项目的任何和所有组合。
除非另外定义,这里使用的所有术语(包括技术术语和科学术语),具有与本公开所属领域中的普通技术人员的一般理解相同的意义。
图1是示出多连接下的通信场景的示例性示图。
在无线局域网中,一个基本服务集(BSS)可以由AP以及与AP通信的一个或多个站点(STA)构成。一个基本服务集可以通过其AP连接到分配系统DS(Distribution System),然后再接入到另一个基本服务集,构成扩展的服务集ESS(Extended Service Set)。
AP是用于无线网络的无线交换机,也是无线网络的接入设备。AP设备可以用作无线基站,主要是用来连接无线网络及有线网络的桥接器。利用这种接入点AP,可以整合有线及无线网络。
AP可以包括软件应用和/或电路,以使无线网络中的其他类型节点可以通过AP与无线网络外部及内部进行通信。在一些示例中,作为示例,AP可以是配备有Wi-Fi(Wireless Fidelity,无线保真)芯片的终端设备或网络设备。
作为示例,站点(STA)可以包括但不限于:蜂窝电话、智能电话、可穿戴设备、计算机、个人数字助理(PDA)、个人通信系统(PCS)设备、个人信息管理器(PIM)、个人导航设备(PND)、全球定位系统、多媒体设备、物联网(IoT)设备等。
在本公开的示例实施例中,AP和STA可以支持多连接的设备,例如,可以被分别表示为AP MLD和non-AP STA MLD。为了便于描述,在下文中,主要描述一个AP MLD与一个non-AP STA MLD在多连接下进行通信(在下文可以称为“多连接通信”)的示例,然而,本公开的示例实施例不限于此,例如,一个AP MLD可以与多个non-AP STA MLD分别进行多连接通信,或者一个non-AP STA MLD可以与不同的AP MLD进行多连接通信。
在图1中,仅作为示例性的,AP MLD可以表示支持多连接通信功能的接 入点,non-AP STA MLD可以表示支持多连接通信功能的站点。参照图1,AP MLD可以工作在三个连接下,如图1所示包括三个附属的接入点AP1、AP2和AP3,non-AP STA MLD也可以工作在三个连接下,如图1所示包括三个附属的站点的STA1、STA2和STA3。在图1的示例中,假设AP1与STA1通过对应的第一连接Link 1进行通信,类似地,AP2和AP3分别通过第二连接Link 2和第三连接Link 3与STA2和STA3进行通信。此外,Link 1至Link 3可以是不同频率下的多个连接,例如,2.4GHz、5GHz、6GHz下的连接等,或2.4GHz、5GHz、6GHz下的几个相同或不同带宽的连接。此外,在每个连接下可以存在多个信道。然而,应该理解的是,图1所示的通信场景仅是示例性的,本发明构思不限于此,例如,AP MLD与non-AP STA MLD可以在更多或更少个连接下进行通信,或者AP MLD可以连接到多个non-AP STA MLD,或者在每个连接下,AP可以与多个其他类型的站点进行通信。
AP MLD可以发送通信指示消息(TIM,traffic indication map)帧标识其BSS参数发生变化。例如,当信标(beacon)帧内的任意元素发生关键更新时,AP MLD将增加接下来发送的TIM帧中的检查信标(Check Beacon)域的值(对256取模)。根据本公开的实施例,以下关于接入点的操作参数的事件将被归类为关键更新:
a)包含信道切换声明元素(Inclusion of a Channel Switch Announcement element)
b)包含扩展信道切换声明元素(Inclusion of an Extended Channel Switch Announcement element)
c)EDCA参数元素的改变(Modification of the EDCA parameters element)
d)包含静默元素(Inclusion of a Quiet element)
e)DSSS参数集的改变(Modification of the DSSS Parameter Set)
f)HT操作元素的改变(Modification of the HT Operation element)
g)包含宽带宽信道切换元素(Inclusion of a Wide Bandwidth Channel Switch element)
h)包含信道切换包装元素(Inclusion of a Channel Switch Wrapper element)
i)包含操作模式通知元素(Inclusion of an Operating Mode Notification element)
j)包含静默信道元素(Inclusion of a Quiet Channel element)
k)VHT操作元素的改变(Modification of the VHT Operation element)
l)HE操作元素的改变(Modification of the HE Operation element)
m)插入广播TWT元素(Insertion of a Broadcast TWT element)
n)包含BSS颜色改变声明元素(Inclusion of the BSS Color Change Announcement element)等。
此外,将理解的是,上述所示的事件仅是示例性的,本公开的实施例不限于此,其他系统信息事件也是可行的,例如,EHT操作元素的改变(Modification of the EHT Operation element)、MU EDCA参数集元素的改变(Modification of the MU EDCA Parameter Set element)、空间复用参数集元素的改变(Modification of the Spatial Reuse Parameter Set element)、UORA参数集元素的改变(Modification of the UORA Parameter Set element)等。
然而,现有技术缺乏如何在多连接下侦听TIM帧的方法。具体地说,现有的机制只适用在单连接下的通信操作,对于支持多连接通信的设备,其可能在不同的连接下侦听beacon帧或TIM帧,因此需要在不同的连接下进行协商(例如,通过重关联/关联(re-association/association)过程或发送TIM广播请求帧进行协商),所以现有的机制需进行增强。
图2是示出根据本公开实施例的通信方法的流程图。图2所示的通信方法可以应用于支持多连接通信的站点设备(例如,non-AP STA MLD)。
参照图2,在步骤210中,在多个连接中的第一连接下,确定第一消息帧。根据本公开的实施例,第一消息帧可以包括:该站点设备请求的与多个连接有关的通信指示消息(TIM)帧广播间隔的第一信息。在本公开的实施例中,多个连接是指在该站点设备与关联的支持多连接通信的接入点设备之间建立的多个连接。例如,在图1所示的实施例中,多个连接可以指Link1至Link3,第一连接可以是Link1至Link3中的一个连接。
在本公开的实施例中,确定第一消息帧的方式可以有很多种,例如: 可以根据以下的至少一种情况来生成第一消息帧:网络情况、负载情况、发送/接收设备的硬件能力、业务类型、相关协议规定;对此本公开实施例不作具体限制。在本公开的实施例中,还可以从外部设备获取该第一消息帧,对此本公开实施例不作具体限制。
根据本公开的实施例,第一消息帧可以是重关联请求帧、关联请求帧、TIM广播请求帧等。然而,本公开不限于此,可以携带第一信息的其他类型的帧也是可行的。在本公开的实施例中,第一信息可以包含由站点设备请求的与多个连接有关的TIM帧广播间隔的信息。作为示例,这里的TIM帧为轻量级的,即,仅携带了诸如用于标识存在BSS参数变化的必要信息,例如,相对于携带有多连接(ML)信息元素、各种能力信息元素等的信标帧来说,TIM帧可以仅携带TIM信息以及检查信标(check beacon)等信息。
在本公开的一个实施例中,第一信息可以包括第一连接下的TIM帧广播间隔的设置值,其中,TIM帧广播间隔可以表示TIM帧发送之间的信标帧周期的数量。第一连接下的TIM帧广播间隔的设置值可以以第一连接下的信标帧周期为基准。例如,结合图1进行描述,当第一连接是Link2时,如果第一连接下的TIM帧广播间隔的设置值为n(n是大于等于1的整数),则TIM帧广播间隔可以指n个在Link2下传输信标帧的周期,也就是说,经过n个这样的周期传输一个TIM帧。通过请求第一连接下的TIM帧广播间隔,站点可以定期侦听TIM帧,从而例如判断BSS参数是否发生变化。在此情况下,第一信息可以是MLD级的,换言之,第一消息帧仅携带关于一个连接(第一连接)的TIM帧广播间隔,而不携带多个连接中的其他连接下的TIM帧广播间隔,但是其他连接下的TIM帧广播间隔可以根据第一连接下的TIM帧广播间隔的设置值来确定。例如,多个连接中的除了第一连接之外的其他连接的TIM帧广播间隔的值与第一连接下的TIM帧广播间隔的设置值具有特定的偏移值。特定的偏移值可以携带在non-AP STA MLD与AP MLD之间传输的其他信息元素(例如,精简邻居报告(RNRE)信息元素、多连接(ML)信息元素等)中。
第一信息可以以各种形式封装在第一消息帧中。在下文中,为了便于 描述,以信息元素的形式来描述第一信息,例如,第一信息可以具有如下面的表1所示的TIM广播请求信息元素(TIM broadcast request element)的形式。因此,在下文中,第一信息和TIM广播请求信息元素可以混用。
表1.TIM广播请求信息元素的格式
Figure PCTCN2021114342-appb-000001
参照表1,元素标识(Element ID)域可以用于标识TIM广播请求信息元素,长度(Length)域可以表示TIM广播请求信息元素的长度,TIM广播间隔(TIM Broadcast Interval)域可以表示TIM帧发送之间的信标帧周期的数量。
表1中的TIM广播间隔(TIM Broadcast Interval)域的值可以是第一信息中包括的第一连接下的TIM帧广播间隔的设置值的示例。在下文中,TIM广播间隔(TIM Broadcast Interval)可以与TIM帧广播间隔混用。
例如,在一个连接下,附属于non-AP STA MLD的STA在多连接建立过程中(例如,关联请求帧)携带TIM broadcast request信息元素,其中,TIM broadcast request信息元素中的TIM broadcast interval的设置值以本连接下的信标帧周期为准。
在本公开的另一实施例中,第一信息可以包括多个连接中的每个连接下的TIM帧广播间隔的设置值。在此实施例中,第一信息还可以包括用于标识多个连接中的每个连接的连接标识信息。在此情况下,第一信息可以是连接级的,也就是说,第一信息可以包括分别与多个连接对应的TIM帧广播间隔的设置值。如果以TIM广播请求信息元素为例来描述第一信息,则TIM广播请求信息元素可以具有如下面的表2所示的格式。
表2.TIM广播请求信息元素的格式
Figure PCTCN2021114342-appb-000002
表2中的元素标识(Element ID)域和长度(Length)域类似于表1,在此省略重复的描述,以避免冗余。
参照表2,TIM广播间隔1(TIM Broadcast Interval 1)域、TIM广播 间隔2(TIM Broadcast Interval 2)域等可以是多个连接中的每个连接下的TIM帧广播间隔的示例,其设置值可以类似于表1中的TIM Broadcast Interval域;连接标识1(Link ID 1)域、连接标识2(Link ID 2)域等可以是多个连接中的每个连接的连接标识信息的示例。例如,每个连接标识(Link ID 1、Link ID 2等)可以具有多个比特位,以标识工作频谱、带宽/信道以及BSSID(基本服务集标识符,basis service set identifier)的组合信息。然而,连接标识信息的示例不限于表2中的连接标识Link ID 1、Link ID 2等,例如,连接标识信息可以是连接组(Link set),Link set可以具有多个比特位,每个比特位对应于多个连接中的相应连接,表2中的多个TIM广播间隔域可以分别对应于连接组(Link set)中的相应位。此外,也可以从表2中省略连接标识信息。例如,当第一信息是请求全部的多个连接下的TIM帧广播间隔时,可以依照特定顺序(例如,按照各连接的带宽确定的顺序)携带多个TIM广播间隔域。
继续参照图2,在步骤220中,可以发送第一消息帧。例如,可以在第一连接下发送第一消息帧。然而,本公开不限于此,也可以在多个连接中的任一连接下发送第一消息帧。
根据本公开实施例的通信方法可以在一个连接下携带支持多连接通信的站点设备请求的本连接或者多个连接下的TIM帧的广播间隔的信息。
图2所示的通信方法仅是示例性的,本公开不限于此。例如,图3示出了根据本公开实施例的交互通信的流程图。
参照图3,步骤310和步骤320可以对应于图2中的步骤210和步骤220,因此参照图2以及表1和表2的描述可以引用于此,为了简明,省略重复的的描述。
在步骤340中,站点设备可以从接入点设备(AP MLD)接收第二消息帧。例如,non-AP STA MLD的一个附属STA可以在一个连接(第一连接)下从AP MLD的相应附属AP接收第二消息帧。在本公开的实施例中,第二消息帧可以是接入点设备根据在步骤320中传输的第一消息帧确定的(步骤330)。例如,第二消息帧可以包括接入点设备对于第一消息的反馈信息。仅作为描述性实施例,该反馈信息可以以TIM广播响应信息元素(TIM  Broadcast response element)的形式携带在第二消息帧中。例如,第二消息帧可以是重关联响应帧、关联响应帧、TIM广播响应帧等。
例如,在接入点设备接受第一消息的情况下,反馈信息可以包括:指示接受第一消息的状态信息。又例如,在接入点设备拒绝第一消息的情况下,反馈信息可以包括由接入点设备推荐(或者建议、设置)的与多个连接有关的TIM帧广播间隔的第二信息,在此情况下,第二消息帧中的第二信息可以与第一消息帧中的第一信息具有对应的格式。
在本公开的一个实施例中,在第一消息帧中的第一信息包括第一连接下的TIM帧广播间隔的设置值的情况下,第二消息帧中的第二信息可以包括推荐的第一连接下的TIM帧广播间隔的设置值。
例如,第二信息可以以如下面的表3所示的格式包括在TIM广播响应信息元素中。
表3.TIM广播响应信息元素的格式
Figure PCTCN2021114342-appb-000003
在表3中,元素标识域和长度域可以分别标识TIM广播响应信息元素以及长度。状态(Status)域可以标识接入点设备是否接受第一消息帧中携带的第一信息。当状态(Status)域指示接受时,可以省略TIM广播间隔(TIM Broadcast Interval)域。当状态(Status)域指示拒绝时,可以进一步包括TIM广播间隔(TIM Broadcast Interval)域,例如,在第一消息指示MLD级的第一连接下的TIM帧广播间隔的情况下,第二消息帧中的TIM广播间隔(TIM Broadcast Interval)域可以标识接入点设备推荐的第一连接下的TIM帧广播间隔。第二消息帧中的TIM广播间隔域的设置值可以类似于表1中的TIM广播间隔域的设置值,为了简明,在此省略重复的描述。
此外,将理解,表3所述的格式仅是示例性的,本公开不限于此,例如,可选地,TIM广播响应信息元素还可以包括TIM广播偏移(TIM Broadcast Offset)域、高速率TIM速率(High Rate TIM Rate)域、低速率TIM速率(Low Rate TIM Rate)域。TIM广播偏移(TIM Broadcast Offset)域可以包括相对于TIM帧发送时的TBTT的时间偏移,例如,其单位为毫秒(microsecond),且可以具有±4us的容限。高速率TIM速率(High Rate  TIM Rate)域可以提供用于发送高数据速率TIM帧的速率的指示符。低速率TIM速率(Low Rate TIM Rate)域提供用于发送低数据速率TIM帧的速率的指示符。
在本公开的另一实施例中,在第一消息帧中的第一信息包括多个连接中的每个连接下的TIM帧广播间隔的设置值的情况下,第二消息帧中的第二信息可以包括推荐的多个连接中的每个连接下的TIM帧广播间隔的设置值。此外,第二信息还可以包括用于标识多个连接中的每个连接的连接标识信息。在此情况下,作为第二信息的示例的TIM广播响应信息元素可以具有如下面的表4所示的格式。
表4.TIM广播响应信息元素的格式
Figure PCTCN2021114342-appb-000004
在表4中,元素标识域和长度域可以分别标识TIM广播响应信息元素以及长度。状态(Status)域可以标识接入点设备是否接受第一消息帧中携带的第一信息。当状态(Status)域指示接受时,可以省略各TIM广播间隔(TIM Broadcast Interval)域以及各连接标识(Link ID)域。当状态(Status)域指示拒绝时,可以进一步包括多个连接中的每个连接下的TIM帧广播间隔,例如,TIM Broadcast Interval 1、TIM Broadcast Interval 2等。表4中的“Link ID 1、Link ID 2”等可以是多个连接中的每个连接的连接标识信息的示例。然而,本公开不限于此,可以如参照表2所描述的以连接组(Link set)的方式来携带连接标识信息。
在一个实施例中,状态(Status)域可以指示接收或拒绝第一消息帧中的第一信息所请求的全部连接的TIM帧广播间隔,在此情况下,表4可以仅包括一个状态(Status)域。然而,在另一实施例中,表4可以存在多个状态(Status)域,每个状态域可以对应于多个连接中的一个连接,以指示是否接受相应连接下请求的TIM帧广播间隔。此外,类似于表3,表4所示的TIM 广播响应元素可选地还可以包括TIM广播偏移(TIM Broadcast Offset)域、高速率TIM速率(High Rate TIM Rate)域、低速率TIM速率(Low Rate TIM Rate)域,它们可以是MLD级或连接级的。
根据本公开的实施例,TIM broadcast request信息元素为MLD级。具体地说,在一个连接下,附属于non-AP STA MLD的STA在多连接建立过程中(例如,关联请求帧)携带TIM broadcast request信息元素,其中,TIM broadcast request信息元素中的TIM broadcast interval的设置值以本连接下的信标帧周期为准。在接收连接下,附属于AP MLD的AP在此连接下回复例如关联响应帧给附属于non-AP STA MLD的STA,包含状态(Status)等域,其中,如果Status域设置为“接受(accept)”,则不包含TIM broadcast interval域,如设置为“拒绝(reject)”,则包含TIM broadcast interval域。该实施例可以适用于TIM广播请求帧。
根据本公开的另一实施例,TIM broadcast request信息元素为连接级。具体地说,TIM广播请求帧(或者,(重)关联请求帧)中包含每个连接下的TIM broadcast interval信息元素,其与Link ID对应。在TIM广播响应帧((或者,(重)关联响应帧))中也包含每个连接下的TIM broadcast interval信息元素,其与Link ID对应。TIM broadcast interval信息元素还包含Status域,如果Status域指示不接受,则可以包含推荐的TIM broadcast interval域。该实施例可以适用于多连接建立过程。
在图3中,non-AP STA MLD与AP MLD可以通过步骤310至步骤340在例如多连接建立过程中协商TIM帧的广播间隔,使得non-AP STA MLD能够根据协商的TIM帧的广播间隔来侦听TIM帧(步骤350),以获得BSS参数信息的变化情况,满足多连接通信的需求。
图4是示出根据本公开实施例的通信方法的流程图。图4所示的通信方法可以应用于支持多连接通信的接入点设备(例如,AP MLD)。
参照图4,在步骤410中,在多个连接中的第一连接下,接收第一消息帧,其中,第一消息帧可以包括:与该接入点设备关联的支持多连接通信的站点设备请求的与多个连接有关的通信指示消息TIM帧广播间隔的第一信息,其中,多个连接是指在站点设备与接入点设备之间建立的多个 连接。
根据本公开的实施例,第一信息可以包括第一连接下的TIM帧广播间隔的设置值,其中,TIM帧广播间隔表示TIM帧发送之间的信标帧周期的数量,其中,第一连接下的TIM帧广播间隔的设置值以第一连接下的信标帧周期为基准。
根据本公开的实施例,多个连接中的除了第一连接之外的其他连接的TIM帧广播间隔的值可以与第一连接下的TIM帧广播间隔的设置值具有特定的偏移值。
根据本公开的实施例,第一信息可以包括多个连接中的每个连接下的TIM帧广播间隔的设置值。
根据本公开的实施例,第一信息还可以包括用于标识多个连接中的每个连接的连接标识信息。
步骤410中的第一消息帧和第一信息可以类似于参照图2以及表1和表2描述的实施例,为了简明,在此省略详细的描述。
在步骤420中,基于第一消息帧执行通信操作。例如,可以确定是否接受第一消息帧中的第一信息,并且可以执行参照图3描述的由AP MLD执行的步骤330和步骤340。
根据本公开的实施例,接入点设备可以向站点设备发送第二消息帧,其中,第二消息帧包括接入点设备对于第一消息的反馈信息。
根据本公开的实施例,在接入点设备接受第一消息的情况下,反馈信息可以包括:指示接受第一消息的状态信息。
根据本公开的实施例,在接入点设备拒绝第一消息的情况下,反馈信息可以包括:接入点设备推荐的与多个连接有关的TIM帧广播间隔的第二信息。
根据本公开的实施例,在第一信息包括第一连接下的TIM帧广播间隔的设置值的情况下,第二信息可以包括推荐的第一连接下的TIM帧广播间隔的设置值。
根据本公开的实施例,在第一信息包括多个连接中的每个连接下的TIM帧广播间隔的设置值的情况下,第二信息可以包括推荐的多个连接中 的每个连接下的TIM帧广播间隔的设置值。
根据本公开的实施例,第二信息还可以包括用于标识多个连接中的每个连接的连接标识信息。
这里的第二消息帧和第二信息可以类似于参照图3以及表3和表4描述的实施例,为了简明,在此省略详细的描述。
图5是示出根据本公开实施例的通信装置500的框图。
参照图5,通信装置500可以包括处理模块510和收发模块520。图5所示的通信装置可以应用于AP MLD或者non-AP STA MLD。
在图5所示的通信装置应用于non-AP STA MLD的情况下,处理模块510可以被配置为:在多个连接中的第一连接下,确定第一消息帧,其中,第一消息帧包括:站点设备请求的与多个连接有关的通信指示消息TIM帧广播间隔的第一信息,其中,多个连接是指在站点设备与关联的支持多连接通信的接入点设备之间建立的多个连接;收发模块520可以被配置为:发送第一消息帧。在此情况下,通信装置500可以执行参照图2所描述的通信方法以及图3中的由non-AP STA MLD执行的操作,为了简明,在此省略重复的描述。
在图5所示的通信装置应用于AP MLD的情况下,收发模块520可以被配置为:在多个连接中的第一连接下,接收第一消息帧,其中,第一消息帧包括:与接入点设备关联的支持多连接通信的站点设备请求的与多个连接有关的通信指示消息TIM帧广播间隔的第一信息,其中,多个连接是指在站点设备与接入点设备之间建立的多个连接;处理模块510可以被配置为:基于第一消息帧控制通信操作的执行。在此情况下,通信装置500可以执行参照图4所描述的通信方法以及图4中的由AP MLD执行的操作,为了简明,在此省略重复的描述。
此外,图5所示的通信装置500仅是示例性的,本公开的实施例不限于此,例如,通信装置500还可以包括其他模块,例如,存储器模块等。此外,通信装置500中的各个模块可以组合成更复杂的模块,或者可以划分为更多单独的模块。
根据本公开的实施例的通信方法和通信装置能够协商TIM帧的广播间 隔,使得non-AP STA MLD能够根据协商的TIM帧的广播间隔来侦听TIM帧,以获得BSS参数信息的变化情况,满足多连接通信的需求。
基于与本公开的实施例所提供的方法相同的原理,本公开的实施例还提供了一种电子装置,该电子装置包括处理器和存储器;其中,存储器中存储有机器可读指令(也可以称为“计算机程序”);处理器,用于执行机器可读指令以实现参照图2至图4描述的方法。
本公开的实施例还提供了一种计算机可读存储介质,该计算机可读存储介质上存储有计算机程序,计算机程序被处理器执行时实现参照图2至图4描述的方法。
在示例实施例中,处理器可以是用于实现或执行结合本公开内容所描述的各种示例性的逻辑方框、模块和电路,例如,CPU(Central Processing Unit,中央处理器)、通用处理器、DSP(Digital Signal Processor,数据信号处理器)、ASIC(Application Specific Integrated Circuit,专用集成电路)、FPGA(Field Programmable Gate Array,现场可编程门阵列)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。处理器也可以是实现计算功能的组合,例如包含一个或多个微处理器组合、DSP和微处理器的组合等。
在示例实施例中,存储器可以是,例如,ROM(Read Only Memory,只读存储器)、RAM(Random Access Memory,随机存取存储器)、EEPROM(Electrically Erasable Programmable Read Only Memory,电可擦可编程只读存储器)、CD-ROM(Compact Disc Read Only Memory,只读光盘)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的程序代码并能够由计算机存取的任何其他介质,但不限于此。
应该理解的是,虽然附图的流程图中的各个步骤按照箭头的指示依次显示,但是这些步骤并不是必然按照箭头指示的顺序依次执行。除非本文中有明确的说明,这些步骤的执行并没有严格的顺序限制,其可以以其他的顺序执行。此外,附图的流程图中的至少一部分步骤可以包括多个子步 骤或者多个阶段,这些子步骤或者阶段并不必然是在同一时刻执行完成,而是可以在不同的时刻执行,其执行顺序也不必然是依次进行,而是可以与其他步骤或者其他步骤的子步骤或者阶段的至少一部分轮流或者交替地执行。
虽然已经参照本公开的某些实施例示出和描述了本公开,但是本领域技术人员将理解,在不脱离本公开的范围的情况下,可以在形式和细节上进行各种改变。因此,本公开的范围不应被限定为受限于实施例,而是应由所附权利要求及其等同物限定。

Claims (26)

  1. 一种通信方法,应用于支持多连接通信的站点设备,所述通信方法包括:
    在多个连接中的第一连接下,确定第一消息帧,其中,所述第一消息帧包括:所述站点设备请求的与所述多个连接有关的通信指示消息TIM帧广播间隔的第一信息,其中,所述多个连接是指在所述站点设备与关联的支持多连接通信的接入点设备之间建立的多个连接;
    发送所述第一消息帧。
  2. 根据权利要求1所述的通信方法,其中,所述第一信息包括所述第一连接下的TIM帧广播间隔的设置值,其中,所述TIM帧广播间隔表示TIM帧发送之间的信标帧周期的数量,
    其中,所述第一连接下的TIM帧广播间隔的设置值以所述第一连接下的信标帧周期为基准。
  3. 根据权利要求2所述的通信方法,其中,所述多个连接中的除了第一连接之外的其他连接的TIM帧广播间隔的值与所述第一连接下的TIM帧广播间隔的设置值具有特定的偏移值。
  4. 根据权利要求1所述的通信方法,其中,所述第一信息包括所述多个连接中的每个连接下的TIM帧广播间隔的设置值。
  5. 根据权利要求4所述的通信方法,其中,所述第一信息还包括用于标识所述多个连接中的每个连接的连接标识信息。
  6. 根据权利要求1至5中的任一项所述的通信方法,其中,所述通信方法还包括:
    从所述接入点设备接收第二消息帧,其中,所述第二消息帧包括所述 接入点设备对于所述第一消息的反馈信息。
  7. 根据权利要求6所述的通信方法,其中,在所述接入点设备接受所述第一消息的情况下,所述反馈信息包括:指示接受所述第一消息的状态信息。
  8. 根据权利要求6所述的通信方法,其中,在所述接入点设备拒绝所述第一消息的情况下,所述反馈信息包括:所述接入点设备推荐的与所述多个连接有关的TIM帧广播间隔的第二信息。
  9. 根据权利要求8所述的通信方法,其中,在所述第一信息包括所述第一连接下的TIM帧广播间隔的设置值的情况下,所述第二信息包括推荐的所述第一连接下的TIM帧广播间隔的设置值。
  10. 根据权利要求8所述的通信方法,其中,在所述第一信息包括所述多个连接中的每个连接下的TIM帧广播间隔的设置值的情况下,所述第二信息包括推荐的所述多个连接中的每个连接下的TIM帧广播间隔的设置值。
  11. 根据权利要求10所述的通信方法,其中,所述第二信息还包括用于标识所述多个连接中的每个连接的连接标识信息。
  12. 一种通信方法,应用于支持多连接通信的接入点设备,所述通信方法包括:
    在多个连接中的第一连接下,接收第一消息帧,其中,所述第一消息帧包括:与所述接入点设备关联的支持多连接通信的站点设备请求的与所述多个连接有关的通信指示消息TIM帧广播间隔的第一信息,其中,所述多个连接是指在所述站点设备与所述接入点设备之间建立的多个连接;
    基于所述第一消息帧执行通信操作。
  13. 根据权利要求12所述的通信方法,其中,所述第一信息包括所述第一连接下的TIM帧广播间隔的设置值,
    其中,所述TIM帧广播间隔表示TIM帧发送之间的信标帧周期的数量,
    其中,所述第一连接下的TIM帧广播间隔的设置值以所述第一连接下的信标帧周期为基准。
  14. 根据权利要求13所述的通信方法,其中,所述多个连接中的除了第一连接之外的其他连接的TIM帧广播间隔的值与所述第一连接下的TIM帧广播间隔的设置值具有特定的偏移值。
  15. 根据权利要求12所述的通信方法,其中,所述第一信息包括所述多个连接中的每个连接下的TIM帧广播间隔的设置值。
  16. 根据权利要求15所述的通信方法,其中,所述第一信息还包括用于标识所述多个连接中的每个连接的连接标识信息。
  17. 根据权利要求12至16中的任一项所述的通信方法,其中,所述通信方法还包括:
    向所述站点设备发送第二消息帧,其中,所述第二消息帧包括所述接入点设备对于所述第一消息的反馈信息。
  18. 根据权利要求17所述的通信方法,其中,在所述接入点设备接受所述第一消息的情况下,所述反馈信息包括:指示接受所述第一消息的状态信息。
  19. 根据权利要求17所述的通信方法,其中,在所述接入点设备拒绝所述第一消息的情况下,所述反馈信息包括:所述接入点设备推荐的与 所述多个连接有关的TIM帧广播间隔的第二信息。
  20. 根据权利要求19所述的通信方法,其中,在所述第一信息包括所述第一连接下的TIM帧广播间隔的设置值的情况下,所述第二信息包括推荐的所述第一连接下的TIM帧广播间隔的设置值。
  21. 根据权利要求19所述的通信方法,其中,在所述第一信息包括所述多个连接中的每个连接下的TIM帧广播间隔的设置值的情况下,所述第二信息包括推荐的所述多个连接中的每个连接下的TIM帧广播间隔的设置值。
  22. 根据权利要求21所述的通信方法,其中,所述第二信息还包括用于标识所述多个连接中的每个连接的连接标识信息。
  23. 一种多连接下的通信装置,应用于支持多连接通信的站点设备,所述通信装置包括:
    处理模块,被配置为:在多个连接中的第一连接下,确定第一消息帧,其中,所述第一消息帧包括:所述站点设备请求的与所述多个连接有关的通信指示消息TIM帧广播间隔的第一信息,其中,所述多个连接是指在所述站点设备与关联的支持多连接通信的接入点设备之间建立的多个连接;
    收发模块,被配置为:发送所述第一消息帧。
  24. 一种多连接下的通信装置,应用于支持多连接通信的接入点设备,所述通信装置包括:
    收发模块,被配置为:在多个连接中的第一连接下,接收第一消息帧,其中,所述第一消息帧包括:与所述接入点设备关联的支持多连接通信的站点设备请求的与所述多个连接有关的通信指示消息TIM帧广播间隔的第一信息,其中,所述多个连接是指在所述站点设备与所述接入点设备之 间建立的多个连接;
    处理模块,被配置为:基于所述第一消息帧控制通信操作的执行。
  25. 一种电子装置,包括存储器、处理器及存储在所述存储器上并在所述处理器上可运行的计算机程序,其中,所述处理器执行所述计算机程序时实现权利要求1至11中的任一项或者权利要求12至22中的任一项所述的方法。
  26. 一种计算机可读存储介质,其中,所述计算机可读存储介质上存储有计算机程序,该计算机程序被处理器执行时实现权利要求1至11中的任一项或者权利要求12至22中的任一项所述的方法。
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