WO2022027720A1 - 多链路场景下的漫游方法、多链路设备及存储介质 - Google Patents

多链路场景下的漫游方法、多链路设备及存储介质 Download PDF

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WO2022027720A1
WO2022027720A1 PCT/CN2020/108688 CN2020108688W WO2022027720A1 WO 2022027720 A1 WO2022027720 A1 WO 2022027720A1 CN 2020108688 W CN2020108688 W CN 2020108688W WO 2022027720 A1 WO2022027720 A1 WO 2022027720A1
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Prior art keywords
link
network access
access device
logical entity
target network
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PCT/CN2020/108688
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English (en)
French (fr)
Inventor
吴昊
谢芳
廖杨
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成都极米科技股份有限公司
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Priority to JP2021554417A priority Critical patent/JP7234404B2/ja
Priority to US17/600,157 priority patent/US11963046B2/en
Priority to EP20919391.1A priority patent/EP4192097A1/en
Publication of WO2022027720A1 publication Critical patent/WO2022027720A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/16Performing reselection for specific purposes
    • H04W36/18Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0027Control or signalling for completing the hand-off for data sessions of end-to-end connection for a plurality of data sessions of end-to-end connections, e.g. multi-call or multi-bearer end-to-end data connections
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/08Reselecting an access point
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/24Reselection being triggered by specific parameters
    • H04W36/30Reselection being triggered by specific parameters by measured or perceived connection quality data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/02Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/24Reselection being triggered by specific parameters
    • H04W36/30Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/34Reselection control
    • H04W36/36Reselection control by user or terminal equipment
    • H04W36/362Conditional handover
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10Small scale networks; Flat hierarchical networks
    • H04W84/12WLAN [Wireless Local Area Networks]

Definitions

  • the present application relates to the field of wireless communications, and in particular, to a roaming method, a multi-link device and a storage medium in a multi-link scenario.
  • 802.11be networking also known as Extremely High Throughput (EHT) networking
  • EHT Extremely High Throughput
  • WLANs wireless local area networks
  • video traffic will continue to be the dominant traffic type in many WLAN deployments.
  • the throughput requirements of these applications are evolving due to the advent of 4k and 8k video (20Gbps uncompressed rate).
  • New high-throughput, low-latency applications such as virtual or augmented reality, gaming, remote offices, and cloud computing will proliferate (for example, real-time gaming with sub-5ms latency).
  • 802.11be networks are designed to ensure WLAN competitiveness by further increasing overall throughput and reducing latency, while ensuring backward compatibility and coexistence with legacy technology standards. 802.11 compatible devices operating in the 2.4GHz, 5GHz and 6GHz bands.
  • the terminal of the wireless local area network When the terminal of the wireless local area network is moving, it may change from the coverage of a network access device (such as a router, access point AP, etc., and the AP will be used as an example below) to the coverage of another network access device. Call it roaming. However, because a single-link terminal has only one link, it must first disconnect the connection with the original AP and then establish the connection with the new AP, which will cause service interruption.
  • the characteristics of multi-link terminals allow the terminal to establish two or more links at the same time, so that the terminal can maintain services when roaming between different APs through the method of link management and interactive control in this application. continuity.
  • the present application provides a roaming method in a multi-link scenario, including:
  • the logical entity one corresponding to the primary link on the original network access device or the logical entity two corresponding to the first secondary link on the original network access device sends a link disconnection request message to the original network access device, requesting the disconnection logic The connection between entity 2 and the original network access device;
  • the logical entity 2 After the logical entity 2 is disconnected from the original network access device, it sends an association request message to the target network access device;
  • the second logical entity receives the association response message sent by the target network access device, and establishes a connection with the target network access device;
  • the logical entity 1 After the connection between the logical entity 2 and the target network access device is established, the logical entity 1 sends a disassociation request message to the original network access device, and disconnects the logical entity 1 or the logical entity 1 and the logical entities except the logical entity 1 and the logical entity 2. Connection to the original network access device.
  • the connection between the logical entities other than the logical entity 2 and the original network access device is disconnected, which ensures the continuity of data transmission and avoids packet loss.
  • the method for selecting the target network access device includes: when the signal strength or signal quality of the original network access device is lower than a first preset threshold, and continues to be low for a first preset detection time At the first preset threshold, search for network access device signals other than the original network access device; if the signal strength or signal quality of the network access device is higher than the second preset threshold, and continues for the first If both of the two preset detection times are higher than the second preset threshold value, the network access device is used as the target network access device.
  • the method for selecting the target network access device includes: when the load of the original network access device exceeds a third preset threshold, searching for network access devices other than the original network access device ; if the load of the network access device is lower than the fourth preset threshold value, the network access device is used as the target network access device.
  • the method for selecting a target network access device further includes: when there are multiple network access devices that meet the conditions, selecting a network access device with the highest signal strength, or selecting a signal with the best quality, from the multiple network access devices, Either select the one that provides the highest QoS, or select the network access device with the smallest network load as the target network access device.
  • the link disconnection request message includes a reason parameter, indicating that the reason for disconnection is "roaming attempt", or/and the updated corresponding information of the service identifier and the link.
  • it also includes: logical entity 1 or logical entity 2 receiving a link disconnection response message sent by the original network access device, where the link disconnection response message includes information corresponding to a service identifier and a link; storing the received service Identifies the information corresponding to the link.
  • the logical entity 2 establishing the target network access device includes: setting the primary and secondary link identifiers corresponding to the logical entity 2 in the locally stored logical entity link correspondence table as the temporary primary link, and the corresponding network access device.
  • the address is set to the address of the target network access device.
  • establishing the access device with the target network for the logical entity 2 further includes: clearing the primary link identifier of the logical entity 1 in the locally stored logical entity link correspondence table, and setting the primary and secondary link identifiers corresponding to the logical entity 2 to main link.
  • it also includes: according to the operable link information of the target network access device obtained during the establishment of the connection between the logical entity two and the target network access device, establishing the logical entity one and/or in addition to the logical entity one and the logical entity two.
  • the connection between the logical entity and the target network access device according to the operable link information of the target network access device obtained during the establishment of the connection between the logical entity two and the target network access device.
  • it also includes: setting the primary and secondary link identifiers corresponding to logical entity 1 and/or logical entities other than logical entity 1 and logical entity 2 in the locally stored logical entity link correspondence table as secondary links, corresponding to The address of the network access device is set to the address of the target network access device.
  • the main link Since the main link is related to the management and control of the entire device, higher reliability of data transmission is required.
  • the data transmission reliability of the existing main link may not be high. In this case, the main link needs to be switched to switch the main link to a link with higher data transmission reliability.
  • the second logical entity sends a link exchange request message to the target network access device, and the link exchange request message includes the link identifier, the corresponding logical entity address, and the main link identifier; the logical entity two receives The link exchange response message sent by the target network access device, the link exchange response message contains the link identifier, the corresponding logical entity address, and the main link identifier; according to the link exchange response message, the main link identifier corresponding to the The primary and secondary link identifiers of the logical entities are set as primary links, and the primary and secondary link identifiers of logical entities other than the logical entities corresponding to the primary link identifiers are set as secondary links.
  • the multi-link scenario refers to that the terminal multi-link device is connected to the network access device through multiple links, and further includes: setting one primary link, and setting other links as secondary links, and the primary link is on the primary link. Perform data transmission, read broadcast information, and transmit management frames or control frames that operate on all links, and perform data transmission or data transmission on secondary links and transmit management frames or control frames that operate on this link.
  • the "roaming attempt" is indicated in the association request message, further comprising: after receiving the association request message, the target network access device reads the indication of "roaming attempt", sends an association response message to the second logical entity, and Send a DS-STA-Notify message to the server.
  • the target network access device After the target network access device reads the "roaming attempt" instruction, it sends a DS-STA-Notify message to the server, so that the server immediately associates the terminal multi-link device with the target network access device, and sends the required message to the terminal.
  • the data of the link device is sent to the target network access device to avoid packet loss.
  • the present application provides a multi-link device, which is a physical device that independently transmits and receives data on different links through multiple logical entities, and each logical entity includes an independent data transceiver module, including:
  • a target network access device selection unit configured to select a network access device that meets the conditions as a target network access device
  • Logical entity one corresponding to the main link on the original network access device, is used to send a link disconnection request message to the original network access device, requesting to disconnect the connection between logical entity two and the original network access device; in the logical entity 2.
  • After establishing the connection with the target network access device send a disassociation request message to the original network access device, and disconnect the logical entity 1 or logical entity 1 and logical entities other than logical entity 1 and logical entity 2 from the original network access device. Connection;
  • the second logical entity corresponding to the first auxiliary link on the original network access device, is used to send a link disconnection request message to the original network access device, requesting to disconnect the connection between the logical entity two and the original network access device; After opening the connection with the original network access device, send an association request message to the target network access device; receive an association response message sent by the target network access device, and establish a connection with the target network access device.
  • the present application provides a multi-link device, comprising: a memory for storing a program; a processor coupled to the memory, the program being executed by the processor to implement the first aspect or the first The roaming method in a multi-link scenario described in any one of the possible implementation manners of the aspect.
  • the present application provides a computer-readable storage medium, including computer instructions, when the computer instructions are run on a terminal, the multi-chain as described in the first aspect or any of the possible implementation manners of the first aspect is implemented. Roaming method in road scene.
  • multi-link device described in the second aspect and the third aspect and the computer-readable storage medium described in the fourth aspect in this application are used to execute the method provided in the first aspect, and thus can achieve The same beneficial effects as those of the method described in the first aspect will not be repeated in the embodiments of the present application.
  • the present application realizes the roaming of terminals between different network access devices through link management and interactive control, ensuring service continuity and avoiding packet loss.
  • FIG. 1 is a schematic flowchart of a basic flow of a roaming method in a multi-link scenario according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of a connection between a terminal and an original AP according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of a process of establishing a connection between a terminal and a target AP according to an embodiment of the present application.
  • a wireless local area network may include a terminal and an access point (Access Point, AP).
  • One access point can correspond to multiple terminals. Multiple links can be established between the terminal and the access point. Multiple links can transmit data simultaneously to improve data transmission efficiency and achieve high network throughput.
  • the terminal may include a single-link device and a multi-link device (Multi-link Device, MLD). Each single-link device transmits data to the access point through a link.
  • the multi-link device includes multiple logical entities. Each logical entity performs data transmission with the access point through a link.
  • a link is a radio resource used to transmit data.
  • the multi-link scenario means that the terminal multi-link device is connected to the network access device through multiple links, wherein one primary link is set, and other links are set as secondary links.
  • On the primary link perform data transmission, read broadcast information, and transmit management frames or control frames such as connection requests to all links, authentication and link switching requests;
  • On the secondary link perform data transmission or data transmission and Transmission of management frames or control frames that operate on this link.
  • the main link is related to the management and control of the entire device, so higher reliability of data transmission is required. For example, the reliability of data transmission can be guaranteed by adopting a lower rate coding method or using a lower frequency band.
  • FIG. 1 is a schematic diagram of a basic flow of a roaming method in a multi-link scenario according to an embodiment of the present application.
  • the basic idea of the roaming method in a multi-link scenario includes: selecting a target network access device that satisfies a condition; Disconnect the logical entity corresponding to a secondary link on the original network access device from the original network access device; establish the connection between the logical entity and the target network access device, and connect the logical entity to the target network
  • the link to which the device is connected is set as the main link on the target network access device; the connection between the logical entities other than the logical entity and the original network access device is disconnected.
  • a connection between logical entities other than the logical entity corresponding to the above-mentioned one auxiliary link and the target network access device is also established according to the operable link information of the target network access device, and these logical entities are connected to the target network access device.
  • the link connected to the target network access device is set as a secondary link on the target network access device. Since the main link needs higher data transmission reliability, in some embodiments, the main link on the target network access device also needs to be switched, so that the main link on the target network access device uses a lower rate encoding or links using lower frequency bands.
  • the network access device may be a router, an AP, or the like.
  • the present application uses an AP as an example for description, and the present application uses two links as an example for description, but does not limit the application of the implementation process to a scenario with more than two links.
  • the terminal multi-link device STA MLD includes two logical entities STA1 and STA2, and is connected to the original network access device AP MLD1 through two links link1 and link2.
  • AP MLD1 includes logical entities AP1 and AP2.
  • STA1 and AP1 transmit data on link1
  • STA2 and AP2 transmit data on link2
  • link1 is the link operating in the 2.4GHz frequency band
  • link2 is the link operating in the 5GHz frequency band.
  • the path is the secondary link on AP MLD1.
  • link1 and link2 are the identifiers of the links.
  • Roaming methods in multi-link scenarios include:
  • a threshold value Th_Roam_Out and a detection time DTime1 may be preset inside the STA MLD.
  • Th_Roam_Out When the signal strength or signal quality of the AP MLD1 is lower than the threshold value Th_Roam_Out, and the duration of DTime1 is lower than the threshold value , then search for signals of other APs.
  • the load of the AP MLD1 exceeds a preset threshold value, or when the network on the AP MLD1 is faulty, etc., the signals of other APs can be searched for.
  • the selection method may be to preset a threshold value Th_Roam_In and detection time DTime2, if the signal strength or signal quality of the AP is higher than the threshold value Th_Roam_In and continues to be higher than the threshold value for DTime2 time, then the signal strength or signal quality of the AP is higher than the threshold value Th_Roam_In AP as the target AP.
  • an AP whose load is lower than a preset threshold may also be selected as the target AP.
  • the terminal can choose by itself, such as choosing the one with the highest signal strength, or the one with the best signal quality, or the one that provides the highest QoS, or the one with the least network load.
  • AP MLD2 is the target AP.
  • STA MLD sends a link disconnection request message to AP MLD1 through STA1 or STA2, requesting to disconnect the connection of link2, that is, disconnecting the connection between STA2 and AP MLD1.
  • AP MLD1 and STA MLD need to synchronously modify the corresponding information of TID (service identifier) and link.
  • TID service identifier
  • the corresponding information of the updated TID and the link is included in the link disconnection request message;
  • the AP MLD1 sends a link disconnection response message to the STA MLD, and the link disconnection response message includes the corresponding information of the TID and the link;
  • STA1 or STA2 of the STA MLD receives the link disconnection response message sent by the AP MLD1, and stores the corresponding information of the received TID and the link.
  • the corresponding information between the original TID and the link is shown in Table 1, and the corresponding information between the updated TID and the link is shown in Table 2.
  • the link disconnection request message may further include a reason parameter, indicating that the reason for disconnection is "roaming attempt”.
  • AP MLD2 After AP MLD2 receives the association request message, it sends an association response message to the STA MLD. In some embodiments, the association request message indicates "roaming attempt”. In this embodiment, after receiving the association request message, the AP MLD2 reads the indication of "roaming attempt", and sends an association response message to the STA MLD, Send a DS-STA-Notify message to the server. After the terminal connects to the AP, the AP notifies the server of the association between the terminal and the AP.
  • the server After the server receives this message, it will send the service data of the terminal to For the updated AP, before the server sends data to the terminal through the original AP, after receiving this message, the data is sent to the terminal through the updated AP, so the service data will not be interrupted.
  • STA1 After the connection between STA2 and AP MLD2 is established, STA1 sends a disassociation request message to AP MLD1 to disconnect the connection between STA1 and AP MLD1, that is, the association between STA MLD and AP MLD1 is released through the Deassociation process.
  • the roaming method may further include the following steps:
  • the main link can also be switched, which specifically includes the following steps:
  • STA2 initiates a link exchange request message to AP MLD2, and the link exchange request message includes a link identifier, a corresponding logical entity address, and a main link identifier.
  • the corresponding STA address is the address of STA1 .
  • AP MLD2 After AP MLD2 receives the link exchange request message, if it accepts the link exchange request, it sends a link exchange response message to STA2.
  • the link exchange response message includes the link identifier and the corresponding logical entity address, and the main chain road sign.
  • the primary and secondary link IDs of the logical entity (STA1 in this embodiment) corresponding to the primary link ID are set as the primary link.
  • the primary and secondary link IDs of the logical entities other than the logical entity corresponding to the primary link ID are set as secondary links. That is, STA1 is set as the operating entity of the main link, the link connecting STA1 and AP MLD2 is used as the main link on AP MLD2, STA2 is used as the operating entity of the secondary link, and the link connecting STA2 and AP MLD2 As a secondary link on AP MLD2.
  • the STA MLD locally stores a logical entity link correspondence table for identifying the primary and secondary links.
  • the logical entity link correspondence table includes field logical entity address, link identification, primary and secondary link identification and AP address, and when STA MLD is connected with AP MLD1, the setting of the logical entity link correspondence table is as shown in Table 3. where, P-link represents the primary link, and S-link represents the secondary link.
  • STA1 disconnects from AP MLD1, clear the primary link identifier of STA1, and set the primary and secondary link identifiers corresponding to STA2 as the primary link.
  • STA1 After STA1 is connected to AP MLD2, modify the primary and secondary link identifiers corresponding to STA1 to secondary links. Illustratively, modify the logical entity link correspondence table as shown in Table 6.
  • the primary and secondary link identifiers corresponding to STA1 are modified to be primary links, and the primary and secondary link identifiers corresponding to STA2 are modified to secondary links.
  • Embodiments of the present application further provide a multi-link device, which is used to implement the roaming method in a multi-link scenario performed by the multi-link device involved in the above embodiments, which may be implemented by hardware, or may be implemented by hardware.
  • Software Implementation includes one or more units corresponding to the above functions, for example, a target network access device selection unit, logical entity 1, logical entity 2, and so on.
  • Embodiments of the present application further provide a multi-link device, including a memory, where the memory is used to store a program; and a processor coupled to the memory, where the processor is used for running the program to implement the above embodiments A roaming method in a multi-link scenario performed by the involved multi-link device.
  • Embodiments of the present application further provide a computer-readable storage medium, including computer instructions, and when the computer instructions are run on a terminal, the methods involved in the foregoing embodiments are implemented.
  • the disclosed systems, devices and methods may be implemented in other manners.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or May be integrated into another device, or some features may be omitted, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution, and the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, a network device or a terminal device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, removable hard disk, ROM, RAM) disk or optical disk and other media that can store program codes.
  • the words “if” or “if” as used herein may be interpreted as “at” or “when” or “in response to determining” or “in response to detecting.”
  • the phrases “if determined” or “if detected (the stated condition or event)” can be interpreted as “when determined” or “in response to determining” or “when detected (the stated condition or event),” depending on the context )” or “in response to detection (a stated condition or event)”.

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Abstract

本申请涉及无线通信领域,公开了一种多链路场景下的漫游方法、多链路设备及存储介质。多链路场景下的漫游方法包括:选择满足条件的目标网络接入设备;断开与在原网络接入设备上的一辅链路对应的逻辑实体与原网络接入设备的连接;建立该逻辑实体与目标网络接入设备的连接,并将该逻辑实体与目标网络接入设备连接的链路作为在目标网络接入设备上的主链路;断开除该逻辑实体外的逻辑实体与原网络接入设备的连接。本申请通过对链路管理和交互控制,实现了终端在不同网络接入设备之间的漫游,保证业务的连续性,避免丢包。

Description

多链路场景下的漫游方法、多链路设备及存储介质 技术领域
本申请涉及无线通信领域,尤其涉及一种多链路场景下的漫游方法、多链路设备及存储介质。
背景技术
802.11be网络,也称为Extremely High Throughput(EHT)网络,通过一系列系统特性和多种机制增强功能以实现极高的吞吐量。随着无线局域网(WLAN)的使用持续增长,对于在许多环境(例如家庭,企业和热点)中提供无线数据服务越来越重要。特别是,视频流量将继续是许多WLAN部署中的主要流量类型。由于出现了4k和8k视频(20Gbps的未压缩速率),这些应用的吞吐量要求正在不断发展。诸如虚拟现实或增强现实,游戏,远程办公室和云计算之类的新型高吞吐量,低延迟应用程序将会激增(例如,实时游戏的延迟低于5毫秒)。
鉴于这些应用程序的高吞吐量和严格的实时延迟要求,用户期望通过WLAN支持其应用程序时,吞吐量更高,可靠性更高,延迟和抖动更少,电源效率更高。用户期望改进与时敏网络(TSN)的集成,以支持异构以太网和无线LAN上的应用程序。802.11be网络旨在通过进一步提高总吞吐量和降低延迟来确保WLAN的竞争力,同时确保与旧版技术标准向后兼容和共存。在2.4GHz,5GHz和6GHz频段运行的802.11兼容设备。
在802.11be网络中,为实现上述的目标,提出了终端与接入点之间可以建立多条数据传输链路,通过多条链路同时传输,来提高传输速率。
发明内容
当无线局域网的终端在移动时,可能会从一个网络接入设备(如路由器、接入点AP等,以下直接以AP为例进行说明)的覆盖范围到另外一个网络接入设备的覆盖范围,称之为漫游。而通常单链路终端因为只有一条链路,则必须先断开与原AP的连接,再建立与新AP的连接,从而会导致业务中断。而多链路终端的特性使得终端可以同时建立两条或两条以上的链路,从而可以通过本申请对链路管理和交互控制的方式,使得终端在不同AP之间漫游时,可以保持业务的连续性。
第一方面,本申请提供一种多链路场景下的漫游方法,包括:
选择满足条件的网络接入设备作为目标网络接入设备;
在原网络接入设备上的主链路对应的逻辑实体一或在原网络接入设备上的第一辅链路对应的逻辑实体二向原网络接入设备发送链路断开请求消息,请求断开逻辑实体二与原网络接入设备的连接;
逻辑实体二与原网络接入设备断开连接后,向目标网络接入设备发送关联请求消息;
逻辑实体二接收目标网络接入设备发送的关联响应消息,建立与目标网络接入设备的连接;
在逻辑实体二与目标网络接入设备建立连接后,逻辑实体一向原网络接入设备发送解除关联请求消息,断开逻辑实体一或逻辑实体一及除逻辑实体一和逻辑实体二外的逻辑实体与原网络接入设备的连接。
本申请在逻辑实体二建立与目标网络接入设备的连接后,再断开除逻辑实体二外的逻辑实体与原网络接入设备的连接,保证了数据传输的连续性,避免丢包。
在一种可能的设计中,选择目标网络接入设备的方法包括:当原网络接入设备的信号强度或信号质量低于第一预设门限值,且持续第一预设检测时间都低于该第一预设门限值时,搜索除原网络接入设备外的网络接入设备信号;如果网络接入设备的信号强度或信号质量高于第二预设门限值,且持续第二预设检测时间都高于该第二预设门限值,则将该网络接入设备作为目标网络接入设备。
在另一种可能的设计中,选择目标网络接入设备的方法包括:当原网络接入设备的负载超过第三预设门限值时,搜索除原网络接入设备外的网络接入设备;如果网络接入设备的负载低于第四预设门限值,则将该网络接入设备作为目标网络接入设备。
可选地,选择目标网络接入设备的方法还包括:当有多个网络接入设备满足条件时,从该多个网络接入设备中选择信号强度最高的,或选择信号质量最好的,或选择提供最高QoS的,或选择网络负载最小的网络接入设备作为目标网络接入设备。
可选地,链路断开请求消息中包含原因参数,指示断开连接的原因是“漫游尝试”,或/和更新的业务标识与链路的对应信息。
可选地,还包括:逻辑实体一或逻辑实体二接收原网络接入设备发送的链路断开响应消息,链路断开响应消息中包含业务标识与链路的对应信息;存储接收的业务标识与链路的对应信息。
可选地,逻辑实体二建立与目标网络接入设备包括:将本地存储的逻辑实体链路对应表中逻辑实体二对应的主辅链路标识设置为临时主链路,对应的网络接入设备地址设置为目标网络接入设备地址。
可选地,逻辑实体二建立与目标网络接入设备还包括:清除本地存储的逻辑实体链路对应表中逻辑实体一的主链路标识,将逻辑实体二对应的主辅链路标识设置为主链路。
可选地,还包括:根据逻辑实体二与目标网络接入设备建立连接中获取的目标网络接入设备的可操作链路信息,建立逻辑实体一和/或除逻辑实体一和逻辑实体二外的逻辑实体与目标网络接入设备的连接。
可选地,还包括:将本地存储的逻辑实体链路对应表中逻辑实体一和/或除逻辑实体一和逻辑实体二外的逻辑实体对应的主辅链路标识设置为辅链路,对应的网络接入设备地址设置为目标网络接入设备地址。
由于主链路关系到整个设备的管理和控制,因此需要更高的数据传输可靠性。现有主链路的数据传输可靠性可能不高,这时需要进行主链路交换,将主链路交换到数据传输可靠性更高的链路上。
可选地,还包括:逻辑实体二向目标网络接入设备发送链路交换请求消息,链路交换请求消息中包含链路标识和对应的逻辑实体地址,及主链路标识;逻辑实体二接收目标网络接入设备发送的链路交换响应消息,链路交换响应消息中包含链路标识和对应的逻辑实体地址,及主链路标识;根据链路交换响应消息,将主链路标识对应的逻辑实体的主辅链路标识设置为主链路,除主链路标识对应的逻辑实体外的逻辑实体的主辅链路标识设置为辅链路。
可选地,多链路场景是指终端多链路设备通过多条链路与网络接入设备连接,还包括:设置一条主链路,并设置其他链路为辅链路,主链路上执行数据传输、广播信息的读取及对所有链路进行操作的管理帧或控制帧的传输,辅链路上执行数据传输或数据传输及对本链路进行操作的管理帧或控制帧的传输。
可选地,关联请求消息中指示“漫游尝试”,还包括:目标网络接入设备接 收到关联请求消息后,读取到“漫游尝试”的指示,则发送关联响应消息给逻辑实体二,并向服务器发送DS-STA-Notify消息。
目标网络接入设备读取到“漫游尝试”的指示后,即向服务器发送DS-STA-Notify消息,使得服务器即时将终端多链路设备与目标网络接入设备关联,将需要发送给终端多链路设备的数据发送给目标网络接入设备,避免丢包。
第二方面,本申请提供一种多链路设备,是一种物理设备,通过多个逻辑实体独立地在不同链路上进行数据收发,每个逻辑实体包含有独立的数据收发模块,包括:
目标网络接入设备选择单元,用于选择满足条件的网络接入设备作为目标网络接入设备;
逻辑实体一,与在原网络接入设备上的主链路对应,用于向原网络接入设备发送链路断开请求消息,请求断开逻辑实体二与原网络接入设备的连接;在逻辑实体二与目标网络接入设备建立连接后,向原网络接入设备发送解除关联请求消息,断开逻辑实体一或逻辑实体一及除逻辑实体一和逻辑实体二外的逻辑实体与原网络接入设备的连接;
逻辑实体二,与在原网络接入设备上的第一辅链路对应,用于向原网络接入设备发送链路断开请求消息,请求断开逻辑实体二与原网络接入设备的连接;断开与原网络接入设备的连接后,向目标网络接入设备发送关联请求消息;接收目标网络接入设备发送的关联响应消息,建立与目标网络接入设备的连接。
第三方面,本申请提供一种多链路设备,包括:存储器,用于存储程序;处理器,耦合到所述存储器,所述程序被所述处理器运行时实现如第一方面或第一方面的可能的实现方式中任一项所述多链路场景下的漫游方法。
第四方面,本申请提供一种计算机可读存储介质,包括计算机指令,当计算机指令在终端上运行时,实现如第一方面或第一方面的可能的实现方式中任一项所述多链路场景下的漫游方法。
需要说明的是,本申请中第二方面和第三方面所述的多链路设备及第四方面所述的计算机可读存储介质,用于执行上述第一方面所提供的方法,因此可以达到与第一方面所述的方法相同的有益效果,本申请实施例在此不再一一赘述。
本申请通过对链路管理和交互控制,实现了终端在不同网络接入设备之间的 漫游,保证业务的连续性,避免丢包。
附图说明
本申请将通过实施例并参照附图的方式说明,其中:
图1为本申请实施例的多链路场景下的漫游方法的基本流程示意图;
图2为本申请实施例的终端与原AP连接的示意图;
图3为本申请实施例的终端与目标AP建立连接过程中的示意图。
具体实施方式
为了使本技术领域的人员更好地理解本申请中的技术方案,下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本申请一部分实施例,而不是全部的实施例。应当理解,此处所描述的具体实施例仅仅用以解释本申请,并不用于限定本申请。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都应当属于本申请保护的范围。此外,虽然本申请中公开内容按照示范性一个或几个实例来介绍,但应理解,可以就这些公开内容的各个方面也可以单独构成一个完整技术方案。在不冲突的情况下,下述的实施例及实施例中的特征可以相互组合。
在本申请实施例中,“示例地”、“例如”等词用于表示作例子、例证或说明。本申请中被描述为“示例”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言,使用示例的一词旨在以具体方式呈现概念。
除非另外定义,本申请使用的技术术语或者科学术语应当为本申请所属领域内具有一般技能的人士所理解的通常意义。本申请中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性,而是仅用于区分描述。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同,而不排除其他元件或者物件。术语“和/或”包括一个或多个相关联的所列项目的任何和所有组合。
下面将结合附图,对本申请中的技术方案进行描述。
无线局域网(Wireless Local Area Network,WLAN)中可包括终端和接入点(Access Point,AP)。一个接入点可对应多个终端。终端与接入点之间可建立多 条链路。多条链路可同时传输数据,以提高数据传输效率以及实现网络的高吞吐量。终端可包括单链路设备和多链路设备(Multi-link Device,MLD),每个单链路设备通过一条链路与接入点进行数据传输,多链路设备包括多个逻辑实体,每个逻辑实体分别通过一条链路与接入点进行数据传输。链路是用于传输数据的无线资源。
多链路场景是指终端多链路设备通过多条链路与网络接入设备连接,其中,设置一条主链路,并设置其他链路为辅链路。主链路上执行数据传输、广播信息的读取及对所有链路的连接请求、鉴权认证和链路切换请求等管理帧或控制帧的传输;辅链路上执行数据传输或数据传输及对本链路进行操作的管理帧或控制帧的传输。主链路关系到整个设备的管理和控制,因此需要更高的数据传输可靠性,例如,通过采用较低速率的编码方式或使用较低的频段来保障数据传输的可靠性。
图1为本申请实施例的多链路场景下的漫游方法的基本流程示意图,如图1所示,多链路场景下的漫游方法的基本思想包括:选择满足条件的目标网络接入设备;断开与在原网络接入设备上的一辅链路对应的逻辑实体与原网络接入设备的连接;建立该逻辑实体与目标网络接入设备的连接,并将该逻辑实体与目标网络接入设备连接的链路设置为在目标网络接入设备上的主链路;断开除该逻辑实体外的逻辑实体与原网络接入设备的连接。
在一些实施例中,还根据目标网络接入设备的可操作链路信息,建立除上述一辅链路对应的逻辑实体外的逻辑实体与目标网络接入设备的连接,并将这些逻辑实体与目标网络接入设备连接的链路设置为在目标网络接入设备上的辅链路。由于主链路需要更高的数据传输可靠性,在一些实施例中,还需要对目标网络接入设备上的主链路进行交换,使目标网络接入设备上的主链路为采用较低速率的编码方式或使用较低频段的链路。
网络接入设备可以为路由器、AP等。在以下实施例中,本申请以AP为示例进行说明,且本申请以两条链路为示例进行说明,但不限制实施过程应用于超过两条链路的场景。
如图2所示,终端多链路设备STA MLD包括两个逻辑实体STA1和STA2,并通过两条链路link1和link2与原网络接入设备AP MLD1连接,AP MLD1包括逻辑实体AP1和AP2,其中,STA1和AP1在link1上传输数据,STA2和AP2在link2 上传输数据,link1是操作在2.4GHz频段上的链路,是AP MLD1上的主链路,link2是操作在5GHz频段上的链路,是AP MLD1上的辅链路。这里的link1和link2是链路的标识。多链路场景下的漫游方法包括:
1.当STA MLD发生移动时,就可能检测到AP MLD1的信号变差,搜索其他AP的信号。在一些实施例中,STA MLD内部可以预设一个门限值Th_Roam_Out和检测时间DTime1,当AP MLD1的信号强度或信号质量低于门限值Th_Roam_Out时,并且持续DTime1时间都低于此门限值,则搜索其他AP的信号。在其他一些实施例中,也可以在AP MLD1的负载超过一预设门限值时,或AP MLD1上的网络发生故障时等情况下,搜索其他AP的信号。
2.选择满足条件的AP作为目标AP。示例地,选择的方式可以是预设一个门限值Th_Roam_In和检测时间DTime2,如果AP的信号强度或信号质量高于门限值Th_Roam_In,并持续DTime2时间都高于此门限值,则将该AP作为目标AP。在其他一些实施例中,也可以选择负载低于一预设门限值的AP作为目标AP。当有多个AP满足条件时,终端可以自行选择,比如选择信号强度最高的,或选择信号质量最好的,或选择提供最高QoS的,或选择网络负载最小的等条件进行选择。在该实施例中,AP MLD2为目标AP。
3.STA MLD通过STA1或STA2向AP MLD1发送链路断开请求消息,请求断开link2的连接,即断开STA2和AP MLD1的连接。
在一些实施例中,在这个请求和响应的过程中,AP MLD1和STA MLD需要同步修改TID(业务标识)与链路的对应信息。具体方法包括:
在链路断开请求消息中包含更新的TID与链路的对应信息;
AP MLD1发送链路断开响应消息给STA MLD,链路断开响应消息中包含TID与链路的对应信息;
STA MLD的STA1或STA2接收AP MLD1发送的链路断开响应消息,存储接收的TID与链路的对应信息。
示例地,原TID与链路的对应信息如表1所示,更新的TID与链路的对应信息如表2所示。
表1
TID link
0-7 link1,link2
8-15 link2
表2
TID link
0-7 link1
8-15 link1
在一些实施例中,链路断开请求消息中还可以包含一个原因参数,指示断开连接的原因是“漫游尝试”。
4.断开STA2与AP MLD1的连接后,通过STA2向AP MLD2发送关联请求消息。在一些实施例中,关联请求消息中指示“漫游尝试”。
5.AP MLD2接收到关联请求消息后,发送关联响应消息给STA MLD。在一些实施例中,关联请求消息中指示“漫游尝试”,在该实施例中,AP MLD2接收到关联请求消息后,读取到“漫游尝试”的指示,则发送关联响应消息给STA MLD,并向服务器发送DS-STA-Notify消息,这条消息用于终端连接到AP后,AP向服务器通知终端与AP的关联关系,在服务器接收到此消息后,会将该终端的业务数据发送到更新后的AP,在此之前服务器通过原AP发送数据到终端,收到此消息以后,数据经由更新后的AP发送到终端,因此业务数据不会中断。
6.通过STA2接收到关联响应消息后,建立STA2与AP MLD2的连接,并将STA2与AP MLD2中的AP4连接的链路link4作为AP MLD2上的主链路,在该链路上进行数据传输,如图3所示。
7.STA2与AP MLD2的连接建立后,通过STA1向AP MLD1发送解除关联请求消息,断开STA1与AP MLD1的连接,即通过Deassociation过程解除STA MLD与AP MLD1的关联关系。
在一些实施例中,漫游方法还可以包括以下步骤:
8.根据STA2与AP MLD2建立连接中获取的AP MLD2的可操作性链路信息,建立STA1与AP MLD2的连接,作为AP MLD2上的辅链路。
在一些实施例中,还可以对主链路进行交换,具体包括以下步骤:
9.STA2向AP MLD2发起链路交换请求消息,链路交换请求消息中包含链路标识和对应的逻辑实体地址,及主链路标识,在该实施例中,对应的STA地址为 STA1的地址。
10.AP MLD2接收到链路交换请求消息后,如果接受链路交换请求,则向STA2发送链路交换响应消息,链路交换响应消息中包括链路标识和对应的逻辑实体地址,及主链路标识。
11.STA MLD通过STA2接收到链路交换响应消息后,根据链路交换响应消息,将主链路标识对应的逻辑实体(本实施例中为STA1)的主辅链路标识设置为主链路,除主链路标识对应的逻辑实体外的逻辑实体的主辅链路标识设置为辅链路。即,将STA1设置为主链路的操作实体,将STA1与AP MLD2连接的链路作为AP MLD2上的主链路,将STA2作为辅链路的操作实体,将STA2与AP MLD2连接的链路作为AP MLD2上的辅链路。
在一些实施例中,STA MLD在本地存储有逻辑实体链路对应表,用于标识主辅链路。示例地,该逻辑实体链路对应表中包括字段逻辑实体地址、链路标识、主辅链路标识和AP地址,STA MLD与AP MLD1连接时,逻辑实体链路对应表的设置如表3所示,其中,P-link表示主链路,S-link表示辅链路。
表3
逻辑实体地址 链路标识 主辅链路标识 AP地址
STA1 link1 P-Link AP MLD1
STA2 link1 S-Link AP MLD1
在STA2连接到AP MLD2,且STA1没有断开与AP MLD1的连接时,将本地存储的逻辑实体链路对应表中逻辑实体二对应的主辅链路标识设置为临时主链路,对应的网络接入设备地址修改为目标网络接入设备地址。示例地,修改逻辑实体链路对应表如表4所示,其中,TP-link表示临时主链路。
表4
逻辑实体地址 链路标识 主辅链路标识 AP地址
STA1 link1 P-Link AP MLD1
STA2 link4 TP-Link AP MLD2
在STA1断开与AP MLD1后,清除STA1的主链路标识,将STA2对应的主辅链路标识设置为主链路。示例地,修改逻辑实体链路对应表如表5所示。
表5
逻辑实体地址 链路标识 主辅链路标识 AP地址
STA1 null null null
STA2 link4 P-Link AP MLD2
在STA1连接到AP MLD2后,将STA1对应的主辅链路标识修改为辅链路。示例地,修改逻辑实体链路对应表如表6所示。
表6
逻辑实体地址 链路标识 主辅链路标识 AP地址
STA1 link3 S-Link AP MLD2
STA2 link4 P-Link AP MLD2
在进行主链路交换后,将STA1对应的主辅链路标识修改为主链路,将STA2对应的主辅链路标识修改为辅链路。示例地,修改逻辑实体链路对应表如表7所示。
表7
逻辑实体地址 链路标识 主辅链路标识 AP地址
STA1 link3 P-Link AP MLD2
STA2 link4 S-Link AP MLD2
本申请实施例还提供一种多链路设备,该设备用于实现上述实施例涉及的多链路设备执行的多链路场景下的漫游方法,可以通过硬件实现,也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的单元,例如,目标网络接入设备选择单元,逻辑实体一,逻辑实体二等。
本申请实施例还提供一种多链路设备,包括存储器,所述存储器用于存储程序;处理器,耦合到所述存储器,其中,所述处理器用于运行所述程序,以实现上述实施例涉及的多链路设备执行的多链路场景下的漫游方法。
本申请实施例还提供一种计算机可读存储介质,包括计算机指令,当计算机指令在终端上运行时,实现上述实施例涉及的方法。
应理解,在本申请的各种实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,部分或全部步骤可以并行执行或先后执行,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本申请实施例的实施过程构成任何限定。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例 的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统、设备和方法,可以通过其它的方式实现。例如,以上所描述的设备实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个设备,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,网络设备或者终端设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、ROM、RAM)磁碟或者光盘等各种可以存储程序代码的介质。
在本申请实施例中使用的术语是仅仅出于描述特定实施例的目的,而非旨在限制本发明。在本申请实施例和所附权利要求书中所使用的单数形式的“一种”、 “所述”和“该”也旨在包括多数形式,除非上下文清楚地表示其他含义。还应当理解,本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
取决于语境,如在此所使用的词语“如果”或“若”可以被解释成为“在……时”或“当……时”或“响应于确定”或“响应于检测”。类似地,取决于语境,短语“如果确定”或“如果检测(陈述的条件或事件)”可以被解释成为“当确定时”或“响应于确定”或“当检测(陈述的条件或事件)时”或“响应于检测(陈述的条件或事件)”。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分步骤是可以通过程序来指令相关硬件来完成,所述的程序可以存储于一个设备的可读存储介质中,该程序在执行时,包括上述全部或部分步骤,所述的存储介质,如:FLASH、EEPROM等。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应以所述权利要求的保护范围为准。

Claims (16)

  1. 一种多链路场景下的漫游方法,其特征在于,包括:
    选择满足条件的网络接入设备作为目标网络接入设备;
    在原网络接入设备上的主链路对应的逻辑实体一或在原网络接入设备上的第一辅链路对应的逻辑实体二向原网络接入设备发送链路断开请求消息,请求断开逻辑实体二与原网络接入设备的连接;
    逻辑实体二与原网络接入设备断开连接后,向目标网络接入设备发送关联请求消息;
    逻辑实体二接收目标网络接入设备发送的关联响应消息,建立与目标网络接入设备的连接;
    在逻辑实体二与目标网络接入设备建立连接后,逻辑实体一向原网络接入设备发送解除关联请求消息,断开逻辑实体一或逻辑实体一及除逻辑实体一和逻辑实体二外的逻辑实体与原网络接入设备的连接。
  2. 根据权利要求1所述的一种多链路场景下的漫游方法,其特征在于,选择目标网络接入设备的方法包括:
    当原网络接入设备的信号强度或信号质量低于第一预设门限值,且持续第一预设检测时间都低于该第一预设门限值时,搜索除原网络接入设备外的网络接入设备信号;
    如果网络接入设备的信号强度或信号质量高于第二预设门限值,且持续第二预设检测时间都高于该第二预设门限值,则将该网络接入设备作为目标网络接入设备。
  3. 根据权利要求1所述的一种多链路场景下的漫游方法,其特征在于,选择目标网络接入设备的方法包括:
    当原网络接入设备的负载超过第三预设门限值时,搜索除原网络接入设备外的网络接入设备;
    如果网络接入设备的负载低于第四预设门限值,则将该网络接入设备作为目标网络接入设备。
  4. 根据权利要求2或3所述的一种多链路场景下的漫游方法,其特征在于,选择目标网络接入设备的方法还包括:
    当有多个网络接入设备满足条件时,从该多个网络接入设备中选择信号强度 最高的,或选择信号质量最好的,或选择提供最高QoS的,或选择网络负载最小的网络接入设备作为目标网络接入设备。
  5. 根据权利要求1所述的一种多链路场景下的漫游方法,其特征在于,链路断开请求消息中包含原因参数,指示断开连接的原因是“漫游尝试”,或/和更新的业务标识与链路的对应信息。
  6. 根据权利要求5所述的一种多链路场景下的漫游方法,其特征在于,还包括:
    逻辑实体一或逻辑实体二接收原网络接入设备发送的链路断开响应消息,链路断开响应消息中包含业务标识与链路的对应信息;
    存储接收的业务标识与链路的对应信息。
  7. 根据权利要求1所述的一种多链路场景下的漫游方法,其特征在于,逻辑实体二建立与目标网络接入设备的连接包括:
    将本地存储的逻辑实体链路对应表中逻辑实体二对应的主辅链路标识设置为临时主链路,对应的网络接入设备地址设置为目标网络接入设备地址。
  8. 根据权利要求7所述的一种多链路场景下的漫游方法,其特征在于,逻辑实体二建立与目标网络接入设备的连接还包括:
    清除本地存储的逻辑实体链路对应表中逻辑实体一的主链路标识,将逻辑实体二对应的主辅链路标识设置为主链路。
  9. 根据权利要求8所述的一种多链路场景下的漫游方法,其特征在于,还包括:
    根据逻辑实体二与目标网络接入设备建立连接中获取的目标网络接入设备的可操作链路信息,建立逻辑实体一和/或除逻辑实体一和逻辑实体二外的逻辑实体与目标网络接入设备的连接。
  10. 根据权利要求9所述的一种多链路场景下的漫游方法,其特征在于,还包括:
    将本地存储的逻辑实体链路对应表中逻辑实体一和/或除逻辑实体一和逻辑实体二外的逻辑实体对应的主辅链路标识设置为辅链路,对应的网络接入设备地址设置为目标网络接入设备地址。
  11. 根据权利要求10所述的一种多链路场景下的漫游方法,其特征在于,还 包括:
    逻辑实体二向目标网络接入设备发送链路交换请求消息,链路交换请求消息中包含链路标识和对应的逻辑实体地址,及主链路标识;
    逻辑实体二接收目标网络接入设备发送的链路交换响应消息,链路交换响应消息中包含链路标识和对应的逻辑实体地址,及主链路标识;
    根据链路交换响应消息,将主链路标识对应的逻辑实体的主辅链路标识设置为主链路,除主链路标识对应的逻辑实体外的逻辑实体的主辅链路标识设置为辅链路。
  12. 根据权利要求1所述的一种多链路场景下的漫游方法,其特征在于,多链路场景是指终端多链路设备通过多条链路与网络接入设备连接,还包括:
    设置一条主链路,并设置其他链路为辅链路,主链路上执行数据传输、广播信息的读取及对所有链路进行操作的管理帧或控制帧的传输,辅链路上执行数据传输或数据传输及对本链路进行操作的管理帧或控制帧的传输。
  13. 根据权利要求1-12中任一项所述的一种多链路场景下的漫游方法,其特征在于,关联请求消息中指示“漫游尝试”,还包括:
    目标网络接入设备接收到关联请求消息后,读取到“漫游尝试”的指示,则发送关联响应消息给逻辑实体二,并向服务器发送DS-STA-Notify消息。
  14. 一种多链路设备,其特征在于,包括:
    目标网络接入设备选择单元,用于选择满足条件的网络接入设备作为目标网络接入设备;
    逻辑实体一,与在原网络接入设备上的主链路对应,用于向原网络接入设备发送链路断开请求消息,请求断开逻辑实体二与原网络接入设备的连接;在逻辑实体二与目标网络接入设备建立连接后,向原网络接入设备发送解除关联请求消息,断开逻辑实体一或逻辑实体一及除逻辑实体一和逻辑实体二外的逻辑实体与原网络接入设备的连接;
    逻辑实体二,与在原网络接入设备上的第一辅链路对应,用于向原网络接入设备发送链路断开请求消息,请求断开逻辑实体二与原网络接入设备的连接;断开与原网络接入设备的连接后,向目标网络接入设备发送关联请求消息;接收目标网络接入设备发送的关联响应消息,建立与目标网络接入设备的连接。
  15. 一种多链路设备,其特征在于,包括:
    存储器,用于存储程序;
    处理器,耦合到所述存储器,所述程序被所述处理器运行时实现如权利要求1-12中任一项所述多链路场景下的漫游方法。
  16. 一种计算机可读存储介质,其特征在于,包括计算机指令,当计算机指令在终端上运行时,实现如权利要求1-12中任一项所述多链路场景下的漫游方法。
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Publication number Priority date Publication date Assignee Title
CN111698742B (zh) * 2020-06-08 2023-03-21 锐捷网络股份有限公司 数据通信方法、终端设备、电子设备及计算机存储介质
WO2022077280A1 (zh) * 2020-10-14 2022-04-21 北京小米移动软件有限公司 一种数据传输方法、装置、通信设备及存储介质
CN116783981A (zh) * 2021-02-23 2023-09-19 华为技术有限公司 用于多链路设备的链路操作的方法和装置
CN113141672B (zh) * 2021-04-08 2023-03-17 成都极米科技股份有限公司 多链路系统中链路配置方法、设备、系统及存储介质
WO2022261831A1 (en) * 2021-06-15 2022-12-22 Huawei Technologies Co.,Ltd. Devices and methods for multi-link handover in a wireless network
CN113507750B (zh) * 2021-07-09 2023-04-18 北京字节跳动网络技术有限公司 终端的控制方法、装置、终端和存储介质
CN115695895B (zh) * 2021-07-21 2024-05-10 极米科技股份有限公司 提高数据传输速率的方法、装置、设备及存储介质
CN114760719B (zh) * 2021-10-11 2023-11-28 极米科技股份有限公司 发现和连接到软接入设备的方法、装置、设备及存储介质
US20230239762A1 (en) * 2022-01-24 2023-07-27 Avago Technologies International Sales Pte. Limited Seamless roaming of multi-radio station
CN117202317A (zh) * 2022-05-30 2023-12-08 中兴通讯股份有限公司 non-AP MLD的通信方法、装置、存储介质及电子装置
US20240147318A1 (en) * 2022-10-26 2024-05-02 Qualcomm Incorporated Multi-link-based roaming

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101810033A (zh) * 2007-09-28 2010-08-18 符号技术有限公司 在基于mimo的系统中增强漫游和连接性的方法和系统
CN103686890A (zh) * 2012-09-07 2014-03-26 中兴通讯股份有限公司 无线局域网中实现无线终端漫游切换的方法及系统
CN107071840A (zh) * 2017-06-20 2017-08-18 成都西加云杉科技有限公司 网络漫游切换方法及装置
CN107708163A (zh) * 2017-09-18 2018-02-16 深圳市信锐网科技术有限公司 一种漫游链路切换方法、移动终端、网络模组及存储介质
CN109413226A (zh) * 2018-11-30 2019-03-01 南京邮电大学 一种实现零代理ip快速漫游的系统及方法
WO2020112244A2 (en) * 2019-10-03 2020-06-04 Futurewei Technologies, Inc. Methods and apparatus for flexible aggregation of communications channels

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008017148A (ja) * 2006-07-05 2008-01-24 Toshiba Corp 移動無線端末装置およびアドレス解決方法
CN101146045B (zh) * 2007-10-11 2011-03-23 杭州华三通信技术有限公司 无线局域网及其接入方法、接入装置
CN101610553B (zh) * 2008-06-17 2011-04-27 福建工程学院 一种多无线模块快速切换方法
EP2237616A1 (en) * 2009-03-30 2010-10-06 Alcatel Lucent Method of performing an intra-segment handover
CN101631371A (zh) * 2009-08-27 2010-01-20 上海交通大学 无线访问接入点零延时切换方法
US8954078B2 (en) * 2009-12-02 2015-02-10 Nokia Siemens Networks Oy Handing over relayed connections in mobile environment
CN106688291B (zh) * 2014-12-01 2020-06-09 株式会社东芝 无线通信装置以及无线通信方法
JP2017112495A (ja) * 2015-12-16 2017-06-22 富士通株式会社 通信制御装置、及び通信制御方法
TWI607658B (zh) * 2016-03-11 2017-12-01 瑞昱半導體股份有限公司 改善換手程序的方法
CN107295580A (zh) * 2016-03-30 2017-10-24 中兴通讯股份有限公司 接入点切换方法及装置
US10856203B2 (en) * 2017-01-19 2020-12-01 Qualcomm Incorporated Signaling for link aggregation setup and reconfiguration
US11032207B2 (en) * 2017-11-17 2021-06-08 Qualcomm Incorporated Link aggregation with floating primary link
WO2020091332A1 (ko) * 2018-10-28 2020-05-07 엘지전자 주식회사 무선랜 시스템에서 멀티 링크를 이용한 통신
CN109257783A (zh) * 2018-11-09 2019-01-22 浙江国自机器人技术有限公司 一种漫游切换方法、装置、系统及可读存储介质
CN111417154A (zh) * 2019-01-07 2020-07-14 中国移动通信有限公司研究院 多连接中保持终端业务连续性的方法、网络单元
JP7438747B2 (ja) * 2019-12-24 2024-02-27 キヤノン株式会社 通信装置、通信方法、およびプログラム
CN115606238A (zh) * 2020-03-16 2023-01-13 Lg电子株式会社(Kr) 用于在无线通信系统中执行多链路通信的技术
JP2022117093A (ja) * 2021-01-29 2022-08-10 キヤノン株式会社 通信装置、通信方法、およびプログラム

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101810033A (zh) * 2007-09-28 2010-08-18 符号技术有限公司 在基于mimo的系统中增强漫游和连接性的方法和系统
CN103686890A (zh) * 2012-09-07 2014-03-26 中兴通讯股份有限公司 无线局域网中实现无线终端漫游切换的方法及系统
CN107071840A (zh) * 2017-06-20 2017-08-18 成都西加云杉科技有限公司 网络漫游切换方法及装置
CN107708163A (zh) * 2017-09-18 2018-02-16 深圳市信锐网科技术有限公司 一种漫游链路切换方法、移动终端、网络模组及存储介质
CN109413226A (zh) * 2018-11-30 2019-03-01 南京邮电大学 一种实现零代理ip快速漫游的系统及方法
WO2020112244A2 (en) * 2019-10-03 2020-06-04 Futurewei Technologies, Inc. Methods and apparatus for flexible aggregation of communications channels

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