WO2024050666A1 - 通信方法、通信设备、计算设备和存储介质 - Google Patents

通信方法、通信设备、计算设备和存储介质 Download PDF

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WO2024050666A1
WO2024050666A1 PCT/CN2022/117081 CN2022117081W WO2024050666A1 WO 2024050666 A1 WO2024050666 A1 WO 2024050666A1 CN 2022117081 W CN2022117081 W CN 2022117081W WO 2024050666 A1 WO2024050666 A1 WO 2024050666A1
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copy
sending end
receiving
message
sending
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PCT/CN2022/117081
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English (en)
French (fr)
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谭爽
马万里
张洁
王力
兰珀·马蒂亚斯
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西门子股份公司
西门子(中国)有限公司
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Priority to PCT/CN2022/117081 priority Critical patent/WO2024050666A1/zh
Publication of WO2024050666A1 publication Critical patent/WO2024050666A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46Interconnection of networks
    • 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 disclosure relates generally to the field of communication technologies, and more specifically, to communication methods, communication devices, computing devices, and storage media.
  • IWLAN industrial wireless LAN
  • iPRP is an extension of PRP (Parallel Redundancy Protocol) for wireless data transmission through IWLAN.
  • PRP Parallel Redundancy Protocol
  • iPRP enables high-availability, redundant, uninterrupted and low-latency connections in wireless networks. It is based on duplicating Layer 2 frames on two independent (redundant) wireless links.
  • FIG. 1 shows a simplified schematic diagram of an IWLAN communication system using the iPRP protocol.
  • all access points AP 1 and AP 2 and clients STA 1A and STA 1B have the iPRP function enabled, or other similar features to achieve redundancy.
  • STA 1A and STA 1B are a pair of redundant WLAN client devices, connected to the same terminal device 101-1 (for example, a typical Profinet IO (PNIO) device) through the "redundancy box 102-1", so Send/receive the same layer 2 traffic to/from their respective access points (AP 1 and AP 2 ).
  • PNIO Profinet IO
  • STA 2A and STA 2B connected to the terminal device 101-2 via the redundancy box 102-2.
  • multiple APs may belong to different LAN networks, and each terminal device can deploy one or two WLAN clients. There will also be a more complex correspondence between APs and clients.
  • the present disclosure proposes a communication method that, based on the existing iPRP communication method, introduces some additional conditions for the sending timing of redundant data copies.
  • the redundant communication system includes a first sending end, a second sending end, a first receiving end, a second receiving end, and a data source, wherein,
  • the first sending end and the second sending end respectively receive a first copy and a second copy of the same data packet from the data source, wherein the first copy has a high priority tag, and the third copy The second copy has a low priority tag,
  • the first sending end sends the first copy to the first receiving end, and the second sending end retains the second copy
  • the first sending end After receiving the "confirmation message” from the first receiving end, the first sending end sends a "success message” indicating that the transmission is successful to the second sending end. After receiving the "confirmation message", the second sending end Discard the second copy when "success message";
  • a "failure message” indicating that the transmission has failed is sent to the second sending end.
  • the second copy is sent to the second receiving end when the "failure message" is received.
  • the method further includes:
  • the second sending end If the second sending end receives neither the "success message” nor the "failure message” within the second predetermined time period, the second sending end sends all the information to the second receiving end. Describe the second copy.
  • the communication method between the first sending end and the first receiving end and the communication method between the second sending end and the second receiving end include: Any of WiFi, 5G, and wired communications.
  • the communication method according to the present disclosure can be employed between redundant links using any two communication methods.
  • the labels of the first copy and the second copy are pre-labeled in at least one of the following ways:
  • Mark the first sending end as a primary sending end mark copies of data packets sent to and from the primary sending end as high priority, and mark the second sending end as a secondary sending end. , marking copies of data packets sent to and from the secondary sending end as low priority;
  • the first sending end and the second sending end are respectively marked as the "odd” sending end and the "even” sending end.
  • the copies from and to the "odd” sending end are marked. is high priority, then copies from and to the "even” sender will be marked with low priority, and vice versa;
  • a communication method including:
  • the sender receives a copy of the packet from the data source
  • the sending end sends the copy to the corresponding receiving end
  • the sending end After receiving the "confirmation message" from the receiving end, the sending end sends a "success message” indicating that the transmission is successful to another sending end with another copy of the same data packet;
  • the sending end does not receive the "confirmation message” within a predetermined time period, then send a "failure message” indicating that the transmission failed to the other sending end;
  • the sending end retains the copy
  • the sending end If the sending end receives neither the "success message” nor the "failure message” within a predetermined time period, the sending end sends the copy to the corresponding receiving end.
  • a communication device including:
  • a receiving unit configured to receive a copy of the data packet from the data source
  • a priority judgment unit configured to check whether the copied tag is of high priority or low priority
  • the transceiver unit is configured as:
  • the transceiver unit is configured as:
  • a computing device including: at least one processor; and a memory coupled to the at least one processor, the memory being configured to store instructions when the instructions are When at least one processor is executed, the processor is caused to execute the method as described above.
  • a non-transitory machine-readable storage medium storing executable instructions that, when executed, cause the machine to perform the method as described above.
  • a computer program comprising computer-executable instructions which, when executed, cause at least one processor to perform the method as described above.
  • a computer program product tangibly stored on a computer-readable medium and including computer-executable instructions that, when executed, cause at least A processor executes the method described above.
  • redundant copies of data packets are not sent until the result of the first attempt of one of the links is obtained. This solution avoids unnecessary redundancy to the greatest extent, makes full use of precious wireless resources, and greatly improves data throughput.
  • FIG. 1 is a simplified schematic diagram of an IWLAN communication system using the iPRP protocol in the prior art
  • Figure 2 is a simplified schematic diagram of a communication system that communicates using a communication method according to an embodiment of the present disclosure
  • Figure 3 is a flowchart of an exemplary process of a communication method according to an embodiment of the present disclosure
  • FIG. 4 is a flowchart of an exemplary process of a communication method performed at a sending end according to another embodiment of the present disclosure
  • Figure 5 shows a block diagram of an exemplary configuration of a communication device for performing the communication method shown in Figure 4.
  • Figure 6 shows a block diagram of a computing device for implementing a communication method according to an embodiment of the present disclosure.
  • AP 1 , AP 2 access point 101-1, 101-2: terminal device
  • STA 1A , STA 1B , STA 2A , STA 2B Client 102-1, 102-2: Redundant box
  • the first sending end 203-2 The second sending end
  • the first receiving end 204-2 The second receiving end
  • the term "includes” and variations thereof represent an open term meaning “including, but not limited to.”
  • the term “based on” means “based at least in part on.”
  • the terms “one embodiment” and “an embodiment” mean “at least one embodiment.”
  • the term “another embodiment” means “at least one other embodiment”.
  • the terms “first”, “second”, etc. may refer to different or the same object. Other definitions may be included below, whether explicit or implicit. The definition of a term is consistent throughout this specification unless the context clearly dictates otherwise.
  • iPRP In the traditional iPRP communication method of WLAN, a basic feature of iPRP is that after receiving the confirmation that the downlink data packet is successfully sent, an access point (AP) will notify the redundant access point that the downlink data packet has been sent successfully. So that the redundant access point can remove the corresponding packet from its transmit queue, avoiding wasting time and radio resources due to repeated transmissions.
  • AP access point
  • the redundant access point can remove the corresponding packet from its transmit queue, avoiding wasting time and radio resources due to repeated transmissions.
  • STA client
  • the first is the situation where the sending of two copies of the same data packet does not overlap in time. This feature will cause the data to be successfully transmitted by access point AP A and thus discarded by access point AP B. In this way, AP B can take advantage of this time. slot to transmit another data.
  • the other is that the sending of two copies of the same data packet overlaps in time. In this case, the above situation cannot be achieved because before the transmission on the first link is completed, another copy of the same data packet has been sent. Transmitted over a redundant link.
  • the transmission of redundant packets can occur at any time on the access point AP or client STA. Based on the above analysis, if the AP's data sending behavior can be coordinated, unnecessary redundant transmission can be reduced and data throughput can be improved.
  • the PRP Box Redundant box
  • the PRP Box can copy each packet and send them to the corresponding AP belonging to each LAN.
  • an acknowledgment is sent to the sender, if it has already been received, another copy of the same packet is ignored.
  • the sending end will stop sending and delete the data packet after receiving the confirmation. Since two APs or STAs responsible for sending the same data packet will send data at any time, and when both transmissions are successful, waste of radio resources is inevitable.
  • the present disclosure proposes a communication method that introduces some additional transmission time dependencies between redundant data packets of iPRP.
  • a WLAN communication system is taken as an example.
  • the communication method according to the present disclosure can be used to reduce unnecessary redundancy. Redundant transmission and improved data throughput, not limited to WLAN communication systems.
  • FIG. 2 shows a simplified schematic diagram of the redundant communication system.
  • the communication system 200 includes a first sending end 203-1, a second sending end 203-2, a first receiving end 204-1, a second receiving end 204-2 and a data source 201.
  • the second sending end is the redundant sending end of the first sending end
  • the second receiving end is the redundant receiving end of the first receiving end.
  • the same data from the data source is copied into two copies 205-1 and 205-2. .
  • two data copies can be copied through a hardware PRP Box (redundant box).
  • the first copy 205-1 is transmitted between the first sending end and the first receiving end, and another second copy 205-2 is transmitted between the second sending end and the second receiving end if necessary.
  • Figure 2 only a pair of redundant transmitting ends and receiving ends in the communication system are used as an example to illustrate the communication method according to the present disclosure. In an actual communication system, any number of pairs of transmitting ends and receiving ends may be included, where each Both a pair of sending end and receiving end can communicate using the communication method according to the present disclosure.
  • the data source can be any terminal device in the industrial field, such as PLC, AGV, gateway and other equipment.
  • the sender is the client and the receiver is the server or cloud; the data source can also be is the server, in this case the sending end is the access point and the receiving end is the client. That is to say, in the method of the present disclosure, the sending end can be an uplink sending end or a downlink sending end, and the other end of the communication is the receiving end.
  • Figure 2 only labels the essential components of the method steps for implementing the invention.
  • FIG. 3 is a flowchart of an exemplary process of a communication method 300 according to an embodiment of the present disclosure. The execution steps of the communication method 300 according to the embodiment of the present disclosure will be described in detail below with reference to FIG. 3 .
  • step S302 the first sending end and the second sending end respectively receive the first copy and the second copy of the same data packet from the data source, wherein the first copy has a high priority tag, and the The second copy has no tags or has low priority tags.
  • a mark is added to the copy of the data packet to distinguish the priority of the two copies.
  • the copy with the higher priority will be sent first, and the copy with the lower priority will be sent first. Not sending yet.
  • Method 1 Two senders connected to the same terminal device are predefined as a "primary” sender and a “secondary” sender. Data copies sent to and from the "primary” sender are tagged with the "primary” tag, and data copies sent to and from the "secondary” sender are tagged with the "secondary” tag. Tags, or no tags.
  • the "primary" label here indicates that this copy has high priority and another copy of the same data has low priority.
  • STA1B, STA2A and STA3A can be selected as the "main" sender.
  • Method 2 Two transmitters connected to the same terminal device are predefined as "odd” transmitter and "even” transmitter.
  • a packet number from an end device is odd, the copy of the data sent to the "odd” sender and the copy of the data from the "even” sender are tagged with a "primary” tag, while the other copy is tagged with a "minor” tag.
  • the packet number is even, the copy of the data sent to the "even” sender and the copy of the data from the "even” client are tagged with a "primary” tag, while the other copy is tagged with a "minor” tag.
  • Method 3 Mark one copy with the "primary” label and the other with the "secondary” label in a random manner.
  • hardware such as PRP Box
  • PRP Box is used to label the copy of the data before the data from the data source is sent to the sender.
  • the following method can also be used, that is, the PRP Box does not mark the "primary/secondary" label , rather the sender can determine the tag category based on predefined global rules enforced across all senders.
  • Two senders connected to the same data source are predefined as an "even” sender and an "odd” sender.
  • the packet number is even
  • the copy of the data sent to and from the "even” client is tagged with the "primary” tag, while the other copy is tagged with the "minor” tag.
  • the packet number is odd
  • the copy of the data sent to and from the "odd” client is tagged with the "primary” tag, while the other copy is tagged with the "minor” tag.
  • the copy with high priority is called the first copy
  • the sending end that sends the first copy is called the first sending end
  • the copy with low priority is called the second copy
  • the sending end is called the second copy.
  • the sender of the second copy is called the second sender. It can be understood that the first sending end and the second sending end do not specifically refer to which sending end, and the first copy and the second copy do not specifically refer to which copy.
  • step S304 the first sending end sends the first copy to the first receiving end, and the second sending end retains the second copy.
  • the copy marked as high priority (the first copy) is sent by the first sending end to the corresponding first receiving end, and the copy (the second copy) of the same data packet with a low priority is sent by the first sending end.
  • the second sending end retains it but does not send it.
  • step S306 after receiving the "confirmation message" from the first receiving end, the first sending end sends a "success message” indicating that the transmission is successful to the second sending end.
  • the second copy is discarded when the "success message" is reached.
  • the second sending end discards the second copy without sending it.
  • step S308 if the first sending end does not receive the "confirmation message" within the first predetermined time period, a "failure message” indicating that the sending has failed is sent to the second sending end.
  • the terminal sends the second copy to the second receiving terminal when receiving the "failure message”.
  • the second sending end sends the second copy to the second receiving end.
  • the communication method 300 may further include step S310: if the second sending end receives neither the "success message” nor the "failure message" within the second predetermined time period, The second sending end sends the second copy to the second receiving end.
  • the second sending end does not receive any message within the second predetermined time period, it will send a message to the second sending end.
  • the receiving end sends the second copy.
  • the first predetermined time and the second predetermined time can be set in advance as needed, and the first predetermined time and the second predetermined time can be set to be equal or unequal.
  • the data received from the data source does not have any tags, it will be sent according to the traditional PRP protocol sending method, which will not be described in detail here.
  • the communication method between the first sending end and the first receiving end and the communication method between the second sending end and the second receiving end include any one of WiFi, 5G, and wired communication.
  • the communication method between the sender and the receiver can be wireless communication or wired communication; the communication methods between the two pairs of senders and receivers can be the same or different.
  • FIG. 4 is a flowchart of an exemplary process of a communication method performed at a sending end according to an embodiment of the present disclosure. The following describes operations performed at a sending end when the sending end receives a copy of a data packet with reference to FIG. 4 .
  • step S402 the sending end receives a copy of the data packet from the data source.
  • step S404 it is checked whether the copied tag is a high priority or a low priority.
  • step S406 the sending end sends the copy to the corresponding receiving end; after receiving the "confirmation message” from the receiving end, the sending end sends a message to the corresponding receiving end.
  • Another sending end of another copy of the same data packet sends a "success message” indicating that the transmission is successful; if the sending end does not receive a "confirmation message” within a predetermined time period, then sends a "success message” to the other sending end indicating that the transmission is successful. Send a failed "failure message”.
  • step S408 the sending end retains the copy; when the sending end receives a "success message” from another sending end with another copy of the same data packet Discard the copy, and when the sending end receives a "failure message” from the other sending end, send the copy to the corresponding receiving end; if the sending end does not receive a "failure message” within a predetermined time period, The "success message” has not received the "failure message", and the sending end sends the copy to the corresponding receiving end.
  • FIG. 5 shows a block diagram of an exemplary configuration of a communication device 500 for performing the communication method shown in FIG. 4 .
  • the communication device 500 includes: a receiving unit 502 , a priority judging unit 504 and a transceiving unit 506 .
  • the receiving unit 502 is configured to receive a copy of the data packet from the data source.
  • the priority judgment unit 504 is configured to check whether the copied tag is a high priority or a low priority.
  • the transceiver unit 506 is configured as:
  • the transceiver unit 506 is configured to:
  • each step of the above communication method and each component module and/or unit of the above communication device may be implemented as software, firmware, hardware or a combination thereof.
  • the program constituting the software for implementing the above method can be installed from a storage medium or a network to a computing device with a dedicated hardware structure.
  • the computing device when installed with various programs, can execute each functions, etc.
  • Each unit of the communication device described above can be implemented by hardware, software, or a combination of hardware and software.
  • FIG. 6 shows a block diagram of a computing device 600 for implementing a communication method according to an embodiment of the present disclosure.
  • computing device 600 may include at least one processor 602 that executes at least one computer-readable instructions (i.e., in software form as described above) stored or encoded in a computer-readable storage medium (i.e., memory 604). implemented elements).
  • computer-executable instructions are stored in memory 604 which, when executed, enable at least one processor 602 to perform operations performed by the data relay device.
  • computer-executable instructions that enable the processor 602 to perform operations performed by the container management device may be stored in the memory 604 .
  • a non-transitory machine-readable medium may have machine-executable instructions (ie, the above-mentioned elements implemented in the form of software), which when executed by a machine, cause the machine to perform the various embodiments of the present disclosure as described above in conjunction with FIGS. 1-5 Describes various operations and functions.
  • a computer program includes computer-executable instructions that, when executed, cause at least one processor to perform each of the steps described above in conjunction with FIGS. 1-5 in various embodiments of the present disclosure. operations and functions.
  • a computer program product includes computer-executable instructions that, when executed, cause at least one processor to perform the steps described above in connection with FIGS. 1-5 in various embodiments of the present disclosure.

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Abstract

本公开涉及通信方法、通信设备、计算设备和存储介质。方法包括:第一发送端和第二发送端分别从数据源接收同一个数据包的第一拷贝和第二拷贝,其中,第一拷贝具有高优先级的标签,第二拷贝具有低优先级的标签,第一发送端向第一接收端发送第一拷贝,第二发送端保留第二拷贝;第一发送端在接收到来自第一接收端的"确认消息"之后,向第二送端发送表示发送成功的"成功消息",第二发送端在接收到"成功消息"时丢弃第二拷贝;如果第一发送端在第一预定时间段内没有接收到"确认消息",则向第二发送端发送表示发送失败的"失败消息",第二发送端在接收到"失败消息"时向第二接收端发送第二拷贝。

Description

通信方法、通信设备、计算设备和存储介质 技术领域
本公开通常涉及通信技术领域,更具体地,涉及通信方法、通信设备、计算设备和存储介质。
背景技术
如果没有现代通信技术,工业领域正在进行的数字化转型就不可能实现。为了给企业提供交换各类数据的最佳基础设施,目前已经开发了一系列特殊的工业无线局域网(IWLAN)产品,这些产品具有独特的增强功能,可以满足控制柜内、室内和室外的工业Wi-Fi的具体要求,例如iPRP(Industrial Parallel Redundancy Protocol,工业并行冗余协议)、iPCF(工业点协调功能)等。
iPRP是通过IWLAN进行无线数据传输的PRP(Parallel Redundancy Protocol,并行冗余协议)的扩展。通过iPRP,可以在无线网络中实现可用性高、冗余的、不间断的和低延迟的连接。它是基于在两个独立(冗余)的无线链路上复制层二的帧。
图1显示了一个采用iPRP协议的IWLAN通信系统的简化示意图。在这个系统中,所有的接入点AP 1和AP 2以及客户端STA 1A和STA 1B都启用了iPRP功能,或其它具有实现冗余的类似功能的特征。假设STA 1A和STA 1B是一对冗余的WLAN客户端设备,通过“冗余盒102-1”连接到同一个终端设备101-1(例如,典型的Profinet IO(PNIO)设备),因此要向/从它们各自的接入点(AP 1和AP 2)发送/接收相同的层二业务。对于STA 2A和STA 2B来说也是如此,通过冗余盒102-2连接到终端设备101-2。
为了简单起见,这里假设两对冗余客户端都由同一对接入点,即AP1和AP2提供服务(在实践中,由于客户端可以在更大的无线网络中自由漫游,客户端与接入点的映射可能更复杂,并随时间变化)。作为进一步的简化,可以假设所有的流量都是周期性的PNIO流量,并且假设所有的数据帧都有相同的持续时间。
在一个实际的IWLAN网络中,多个AP可能属于不同的LAN网络,每个终端设备可以部署一个或两个WLAN客户端,AP和客户端之间也会有更复杂的对应关系。
发明内容
在下文中给出关于本发明的简要概述,以便提供关于本发明的某些方面的基本理解。应当理解,这个概述并不是关于本发明的穷举性概述。它并不是意图确定本发明的关键或重要部分,也不是意图限定本发明的范围。其目的仅仅是以简化的形式给出某些概念,以此作为稍后论述的更详细描述的前序。
有鉴于此,本公开提出了一种通信方法,在现有iPRP通信方式的基础上,对于冗余数据拷贝的发送时机引入了一些额外的条件。
根据本公开的一个方面,提供一种冗余通信系统的通信方法,所述冗余通信系统包括第一发送端、第二发送端、第一接收端、第二接收端、数据源,其中,
所述第一发送端和所述第二发送端分别从所述数据源接收同一个数据包的第一拷贝和第二拷贝,其中,所述第一拷贝具有高优先级的标签,所述第二拷贝具有低优先级的标签,
所述第一发送端向所述第一接收端发送所述第一拷贝,所述第二发送端保留所述第二拷贝;
所述第一发送端在接收到来自所述第一接收端的“确认消息”之后,向所述第二送端发送表示发送成功的“成功消息”,所述第二发送端在接收到所述“成功消息”时丢弃所述第二拷贝;
如果所述第一发送端在第一预定时间段内没有接收到“确认消息”,则向所述第二发送端发送表示发送失败的“失败消息”,所述第二发送端在接收到所述“失败消息”时向所述第二接收端发送所述第二拷贝。
通过这样的方式,可以减少不必要的冗余传输,并提高数据吞吐量;同时在第一拷贝发送失败的情况下也可以保证第二拷贝被发送给接收端。
可选地,在上述方面的一个示例中,所述方法还包括:
如果所述第二发送端在第二预定时间段内既没有接收到所述“成功消息”也没有接收到所述“失败消息”,所述第二发送端向所述第二接收端发送所述第二拷贝。
通过这样的方式,即使在丢包的情况下,也能保证数据拷贝的正常传送。
可选地,在上述方面的一个示例中,所述第一发送端与所述第一接收端之间的通信方式以及所述第二发送端与所述第二接收端之间的通信方式包括WiFi、5G、有线通信中的任意一项。
通过这样的方式,可以在采用任意两种通信方式的冗余链路之间采用根据本公开的通信方法。
可选地,在上述方面的一个示例中,所述第一拷贝和所述第二拷贝的标签通过以下方式中的至少一种预先进行标记:
将所述第一发送端标记为主发送端,将发送给所述主发送端和来自所述主发送端的数据包的拷贝标记为高优先级,将所述第二发送端标记为次发送端,将发送给所述次发送端和来自所述次发送端的数据包的拷贝标记为低优先级;
将所述第一发送端和所述第二发送端分别标记为“奇”发送端和“偶”发送端,当数据包的编号为奇数,则将来自和发往“奇”发送端的拷贝标记为高优先级,则将来自和发往“偶”发送端的拷贝标记低优先级,反之亦然;
对于同一个数据包的拷贝随机将其中一个标记低高先级,另一个标记低优先级。
通过这样的方式,可以根据不同的网络状况和通信需求采用不同的标记方式对同一个数据包的两个拷贝进行标记。
根据本公开的另一方面,提供了一种通信方法,包括:
发送端从数据源接收数据包的拷贝,
检查所述拷贝的标签是高优先级还是低优先级;
在所述拷贝的标签是高优先级的情况下:
所述发送端将所述拷贝发送给对应的接收端;
在接收到来自所述接收端的“确认消息”之后,所述发送端向具有同一数据包的另一拷贝的另一发送端发送表示发送成功的“成功消息”;
如果所述发送端在预定时间段内没有接收到“确认消息”,则向所述另一发送端发送表示发送失败的“失败消息”;
在所述拷贝的标签是低优先级的情况下:
所述发送端保留所述拷贝;
当所述发送端从具有同一数据包的另一拷贝的另一发送端接收到“成功消息”时丢弃所述拷贝,当所述发送端从所述另一发送端接收到“失败消息”时,将所述拷贝发送给对应的接收端;
如果所述发送端在预定时间段内既没有接收到所述“成功消息”也没有接收到所述“失败消息”,所述发送端将所述拷贝发送给对应的接收端。
根据本公开的另一方面,提供了一种通信设备,包括:
接收单元,被配置为从数据源接收数据包的一个拷贝,
优先级判断单元,被配置为检查所述拷贝的标签是高优先级还是低优先级;
收发单元,
在所述拷贝的标签是高优先级的情况下,所述收发单元被配置为:
将所述拷贝发送给对应的接收端;
在接收到来自所述接收端的“确认消息”之后,向具有同一数据包的另一拷贝的另一发送端发送表示发送成功的“成功消息”;
如果在预定时间段内没有接收到“确认消息”,则向所述另一发送端发送表示发送失败的“失败消息”;
在所述拷贝的标签是低优先级的情况下,所述收发单元被配置为:
保留所述拷贝;
当从具有同一数据包的另一拷贝的另一发送端接收到“成功消息”时丢弃所述拷贝,当从所述另一发送端接收到“失败消息”时,将所述拷贝发送给对应的接收端;
如果在预定时间段内既没有接收到所述“成功消息”也没有接收到所述“失败消息”,将所述拷贝发送给对应的接收端。
根据本公开的另一方面,提供了一种计算设备,包括:至少一个处理器;以及与所述至少一个处理器耦合的一个存储器,所述存储器用于存储指令,当所述指令被所述至少一个处理器执行时,使得所述处理器执行如上所述的方法。
根据本公开的另一方面,提供了一种非暂时性机器可读存储介质,其存储有可执行指令,所述指令当被执行时使得所述机器执行如上所述的方法。
根据本公开的另一方面,提供了一种计算机程序,包括计算机可执行指令,所述计算机可执行指令在被执行时使至少一个处理器执行如上所述的方法。
根据本公开的另一方面,提供了一种计算机程序产品,所述计算机程序产品被有形地存储在计算机可读介质上并且包括计算机可执行指令,所述计算机可执行指令在被执行时使至少一个处理器执行如上所述的方法。
根据本公开的通信方法和通信设备,在得到其中一个链路的第一次尝试的结果之前,不发送数据包的冗余拷贝。这种解决方案最大程度上避免不必要的冗余,充分利用宝贵的无线资源,并且极大提高数据吞吐量。
附图说明
参照下面结合附图对本发明实施例的说明,会更加容易地理解本发明的以上和其它目的、特点和优点。附图中的部件只是为了示出本发明的原理。在附图中,相同的或类似的技术特征或部件将采用相同或类似的附图标记来表示。附图中:
图1是现有技术中采用iPRP协议的IWLAN通信系统的简化示意图;
图2是采用根据本公开实施例的通信方法进行通信的通信系统的简化示意图;
图3为根据本公开实施例的通信方法的示例性过程的流程图;
图4为根据本公开另一实施例在一个发送端处执行的通信方法的示例性过程的流程图;
图5示出了用于执行图4所示的通信方法的通信设备的示例性配置的框图;以及
图6示出了根据本公开实施例的用于实现通信方法的计算设备的方框图。
其中,附图标记如下:
AP 1、AP 2:接入点                   101-1、101-2:终端设备
STA 1A、STA 1B、STA 2A、STA 2B:客户端  102-1、102-2:冗余盒
200:通信系统                      201:数据源
203-1:第一发送端                  203-2:第二发送端
204-1:第一接收端                  204-2:第二接收端
205-1:第一拷贝                    205-2:第二拷贝
300:通信方法                      S302、S304、S306、S308、S310:步骤
400:通信方法                      S402、S404、S406、S408:步骤
500:通信设备                      502:接收单元
504:优先级判断单元                506:收发单元
600:计算设备                      602:处理器
604:存储器
具体实施方式
现在将参考示例实施方式讨论本文描述的主题。应该理解,讨论这些实施方式只是为了使得本领域技术人员能够更好地理解从而实现本文描述的主题,并非是对权利要求书中所阐述的保护范围、适用性或者示例的限制。可以在不脱离本公开内容的保护范围 的情况下,对所讨论的元素的功能和排列进行改变。各个示例可以根据需要,省略、替代或者添加各种过程或组件。例如,所描述的方法可以按照与所描述的顺序不同的顺序来执行,以及各个步骤可以被添加、省略或者组合。另外,相对一些示例所描述的特征在其它例子中也可以进行组合。
如本文中使用的,术语“包括”及其变型表示开放的术语,含义是“包括但不限于”。术语“基于”表示“至少部分地基于”。术语“一个实施例”和“一实施例”表示“至少一个实施例”。术语“另一个实施例”表示“至少一个其他实施例”。术语“第一”、“第二”等可以指代不同的或相同的对象。下面可以包括其他的定义,无论是明确的还是隐含的。除非上下文中明确地指明,否则一个术语的定义在整个说明书中是一致的。
在WLAN的传统iPRP通信方式中,iPRP的一个基本特征是,一个接入点(Access Point,AP)在收到下行链路数据包发送成功的确认后,会通知冗余接入点发送成功,以便冗余接入点可以从其发送队列中删除相应的数据包,避免由于重复传输而浪费时间和无线电资源。然而,默认情况下,接入点之间没有协调机制,也没有时间同步。因此,当两个接入点向/从客户端(STA)发送/接收数据时,可能会出现以下两种数据传输模式。
第一种是同一数据包的两个拷贝的发送没有时间重合的情况,这种特征会使得数据被接入点AP A成功传输,从而被接入点AP B丢弃,这样AP B可以利用这个时隙传输另一个数据。而另一种是同一数据包的两个拷贝的发送有时间重合,在这种情况下,无法实现上述情况,因为在第一条链路上的传输完成之前,同一数据包的另一个拷贝已经在冗余的链路上传输了。
在传统的iPRP中,冗余数据包的传输可以在接入点AP或客户端STA上随时发生。基于上面的分析,如果能够协调AP的数据发送行为,就可以减少不必要的冗余传输,并提高数据吞吐量。
对于传统的iPRP,其通信过程如下。
在发送端,PRP Box(冗余盒)可以复制每个数据包,并将它们发送到属于每个LAN的对应AP。在接收端,当成功收到数据包的拷贝时,将向发送方发送确认,如果已经接收到,则同一数据包的另一个拷贝将被忽略。同时,如果另一个拷贝还没有被发送出去,发送端将停止发送,并在收到确认之后删除该数据包。由于负责发送同一数据包的两个AP或STA会随时发送数据,而在两个传输都成功的情况下,无线电资源的浪费是不可避免的。
为了有效利用无线电资源,提高数据吞吐量,本公开提出了一种通信方法,在iPRP 的冗余数据包之间引入一些额外的传输时间依赖。在本公开的描述中,是以WLAN通信系统为例进行说明,本领域技术人员可以理解,在任何采用冗余机制进行通信的系统中,都可以采用根据本公开的通信方法来减少不必要的冗余传输,并提高数据吞吐量,而不限于WLAN通信系统。
下面将结合附图来描述根据本公开实施例的通信方法和装置。
根据本公开的通信方法是在一个采用冗余机制进行通信的通信系统中实现的。图2示出了该冗余通信系统的简化示意图。在图2中,通信系统200包括第一发送端203-1、第二发送端203-2、第一接收端204-1、第二接收端204-2和数据源201。其中,第二发送端是第一发送端的冗余发送端,第二接收端是第一接收端的冗余接收端,来自数据源的同一个数据被复制为两个拷贝205-1和205-2。例如可以通过硬件PRP Box(冗余盒)来复制两个数据拷贝,在本公开的方法中对于如何复制两个数据拷贝不做限定,在此不再详述。第一发送端和第一接收端之间传输第一拷贝205-1,第二发送端和第二接收端之间在必要的情况下传输另一个第二拷贝205-2。在图2中仅以通信系统中的一对冗余发送端和接收端为例来说明根据本公开的通信方法,在实际的通信系统中,可以包括任意多对发送端和接收端,其中每一对发送端与接收端之间都可以采用根据本公开的通信方法进行通信。
在一个工业无线局域网中,数据源可以是工业领域的任意终端设备,例如PLC、AGV、网关等设备,在这种情况下,发送端就是客户端,接收端就是服务器或者云;数据源也可以是服务器,在这种情况下,发送端是接入点,接收端是客户端。也就是说,在本公开的方法中,发送端可以是上行链路的发送端也可以是下行链路的发送端,通信的另一端就是接收端。为了简单起见,图2只标记出了实现本发明的方法步骤中的基本部件。
图3为根据本公开实施例的通信方法300的示例性过程的流程图。下面结合图3详细说明根据本公开实施例的通信方法300的执行步骤。
首先,在步骤S302中,第一发送端和第二发送端分别从数据源接收同一个数据包的第一拷贝和第二拷贝,其中,所述第一拷贝具有高优先级的标签,所述第二拷贝没有标签或者具有低优先级的标签。
在本公开的方法中,数据包的拷贝被添加了一个用于区分两个拷贝的优先级的标记,在下面的步骤中,优先级高的那个拷贝首先要被发送,而优先级低的拷贝暂时不发送。
具体地,可以通过以下方式中的一种方式来给数据的拷贝添加标签。
方法1:连接到同一终端设备的两个发送端被预先定义为“主”发送端和“次” 发送端。发送给“主”发送端的数据拷贝以及来自“主”发送端的数据拷贝被标记有“主”标签,发送给“次”发送端的数据拷贝以及来自“次”发送端的数据拷贝被标记有“次”标签,也可以不添加标签。
这里的“主”标签表示该拷贝具有高优先级,同一个数据的另一个拷贝则具有低优先级。
使得“主”客户端更好地分布在不同网络中,以避免网络之间负载不平衡。如图中的例子,可以选择STA1B、STA2A和STA3A作为“主”发送端。
方法2:连接到同一终端设备的两个发送端被预先定义为“奇”发送端和“偶”发送端。当来自终端设备的数据包编号为奇数时,发送给“奇”发送端的数据拷贝以及来自“偶”发送端的数据拷贝被标记“主”标签,而另一个拷贝被标记“次”标签。当数据包编号为偶数时,发送给“偶”发送端的数据拷贝以及来自“偶”客户端的数据拷贝被标记“主”标签,而另一个拷贝被标记“次”标签。
当网络中的终端设备很少,而每个终端设备都要求高吞吐量时,这种方法效率更高,可以充分利用这两条链路来同时传输两个独立的数据流。
方法3:按照随机的方式给一个拷贝标记“主”标签,而另一个标记“次”标签。
上面的方法中是在数据源的数据发送给发送端之前利用硬件(例如PRP Box)来给数据的拷贝加上标签,还可以采用下面这样的方式,即PRP Box不标记“主/次”标签,而是发送端可以根据在所有发送端中实行的预定义的全局规则来确定标签类别。
一个示例是:
两个连接到同一个数据源的发送端被预定义为“偶”发送端和“奇”发送端。当数据包编号是偶数时,发送给“偶”客户端的数据拷贝以及来自“偶”客户端的数据拷贝被标记“主”标签,而另一个拷贝被标记“次”标签。当数据包的编号是奇数时,发送给“奇”客户端的数据拷贝以及来自“奇”客户端的数据拷贝被标记“主”标签,而另一个拷贝被标记“次”标签。
在根据本公开的方法中,对于如何给数据包的两个拷贝添加标签的具体方式不做限定,只要能够对两个拷贝进行区分即可,这样其中一个发送端发送数据的拷贝,而另一个发送端暂时不发送数据的拷贝。
在本说明书中,为了方便说明,将优先级高的拷贝称为第一拷贝,将发送第一拷贝的发送端称为第一发送端,将优先级低的拷贝称为第二拷贝,将发送第二拷贝的发送端称为第二发送端。可以理解,第一发送端和第二发送端并不特指哪一个发送端,第一拷 贝和第二拷贝也不特指哪一个拷贝。
在步骤S304中,所述第一发送端向所述第一接收端发送所述第一拷贝,所述第二发送端保留所述第二拷贝。
也就是说,被标记为高优先级的那个拷贝(第一拷贝)被第一发送端发送给对应的第一接收端,而同一数据包的优先级低的那个拷贝(第二拷贝)被第二发送端保留而不发送。
在步骤S306中,所述第一发送端在接收到来自第一接收端的“确认消息”之后,向所述第二发送端发送表示发送成功的“成功消息”,所述第二发送端在接收到所述“成功消息”时丢弃所述第二拷贝。
也就是说,在第一发送端成功将数据的第一拷贝发送给第一接收端的情况下,第二发送端丢弃第二拷贝,而不进行发送。
在步骤S308中,如果所述第一发送端在第一预定时间段内没有接收到“确认消息”,则向所述第二发送端发送表示发送失败的“失败消息”,所述第二发送端在接收到所述“失败消息”时向所述第二接收端发送所述第二拷贝。
也就是说,在第一发送端发送失败的情况下,第二发送端将第二拷贝发送给第二接收端。
通过这样的方式,可以减少不必要的冗余传输,并提高数据吞吐量;同时在第一拷贝发送失败的情况下也可以保证第二拷贝被发送给接收端。
在一个示例中,通信方法300还可以包括步骤S310:如果所述第二发送端在第二预定时间段内既没有接收到所述“成功消息”也没有接收到所述“失败消息”,所述第二发送端向所述第二接收端发送所述第二拷贝。
在这种情况下,可能是在某个环节发生了数据的丢失,为了确保数据的传输,所述第二发送端如果在第二预定时间段内没有收到任何消息,则向所述第二接收端发送所述第二拷贝。
其中,第一预定时间和第二预定时间可以根据需要预先设定,第一预定时间和第二预定时间可以设置为相等也可以不相等。
此外,如果从数据源接收到的数据没有任何标签,那就按照传统PRP协议的发送方式来发送,在此不再详述。
所述第一发送端与所述第一接收端之间的通信方法以及所述第二发送端与所述第二 接收端之间的通信方法包括WiFi、5G、有线通信中的任意一项。
也就是说,发送端与接收端之间的通信方式可以是无线通信,也可以是有线通信;两对发送端和接收端之间的通信方式可以相同也可以不同。
图4为根据本公开实施例在一个发送端处执行的通信方法的示例性过程的流程图。下面参照图4说明当一个发送端接收到一个数据包的拷贝时在该发送端处所执行的操作。
首先,在步骤S402中,发送端从数据源接收数据包的拷贝。
接着,在步骤S404中,检查所述拷贝的标签是高优先级还是低优先级。
如果拷贝的标签是高优先级,执行步骤S406的操作:所述发送端将所述拷贝发送给对应的接收端;在接收到来自所述接收端的“确认消息”之后,所述发送端向具有同一数据包的另一拷贝的另一发送端发送表示发送成功的“成功消息”;如果所述发送端在预定时间段内没有接收到“确认消息”,则向所述另一发送端发送表示发送失败的“失败消息”。
如果拷贝的标签是低优先级,执行步骤S408的操作:所述发送端保留所述拷贝;当所述发送端从具有同一数据包的另一拷贝的另一发送端接收到“成功消息”时丢弃所述拷贝,当所述发送端从所述另一发送端接收到“失败消息”时,将所述拷贝发送给对应的接收端;如果所述发送端在预定时间段内既没有接收到所述“成功消息”也没有接收到所述“失败消息”,所述发送端将所述拷贝发送给对应的接收端。
图5示出了用于执行图4所示的通信方法的通信设备500的示例性配置的框图。在图5中,通信设备500包括:接收单元502、优先级判断单元504和收发单元506。
接收单元502被配置为从数据源接收数据包的一个拷贝。
优先级判断单元504被配置为检查所述拷贝的标签是高优先级还是低优先级。
在所述拷贝的标签是高优先级的情况下,所述收发单元506被配置为:
将所述拷贝发送给对应的接收端;
在接收到来自所述接收端的“确认消息”之后,向具有同一数据包的另一拷贝的另一发送端发送表示发送成功的“成功消息”;
如果在预定时间段内没有接收到“确认消息”,则向所述另一发送端发送表示发送失败的“失败消息”;
在所述拷贝的标签是低优先级的情况下,所述收发单元506被配置为:
保留所述拷贝;
当从具有同一数据包的另一拷贝的另一发送端接收到“成功消息”时丢弃所述拷贝,当从所述另一发送端接收到“失败消息”时,将所述拷贝发送给对应的接收端;
如果在预定时间段内既没有接收到所述“成功消息”也没有接收到所述“失败消息”,将所述拷贝发送给对应的接收端。
作为一个示例,上述通信方法的各个步骤以及上述通信设备的各个组成模块和/或单元可以实施为软件、固件、硬件或其组合。在通过软件或固件实现的情况下,可以从存储介质或网络向具有专用硬件结构的计算设备安装构成用于实施上述方法的软件的程序,该计算设备在安装有各种程序时,能够执行各种功能等。
需要说明的是,图5所示的通信设备500及其组成单元的结构仅仅是示例性的,本领域技术人员可以根据需要对图5所示的结构框图进行修改。
通信方法400和通信设备500的各个部分的操作和功能的细节例如可以与参照结合图1-3描述的本公开的通信方法的实施例的相关部分相同或类似,这里不再详细描述。
根据本公开的技术方案和现有iPRP解决方案之间的主要区别在于,在得到其中一个链路的第一次尝试的结果之前,不发送数据包的冗余拷贝。这种解决方案最大程度上避免不必要的冗余,充分利用宝贵的无线资源,并且极大提高数据吞吐量。
如上参照图1至图5,对根据本公开的实施例的通信方法以及通信设备的实施例进行了描述。以上所述的通信设备的各个单元可以采用硬件实现,也可以采用软件或者硬件和软件的组合来实现。
图6示出了根据本公开实施例的用于实现通信方法的计算设备600的方框图。根据一个实施例,计算设备600可以包括至少一个处理器602,处理器602执行在计算机可读存储介质(即,存储器604)中存储或编码的至少一个计算机可读指令(即,上述以软件形式实现的元素)。
在一个实施例中,在存储器604中存储计算机可执行指令,该计算机可执行指令在被执行时使得至少一个处理器602可以完成数据中继装置所执行的操作。此外,存储器604中还可以存储可以使得处理器602完成容器管理装置所执行的操作的计算机可执行指令。
应该理解,在存储器604中存储的计算机可执行指令当执行时使得至少一个处理器602进行本公开的各个实施例中以上结合图1-5描述的各种操作和功能。
根据一个实施例,提供了一种非暂时性机器可读介质。该非暂时性机器可读介质可以具有机器可执行指令(即,上述以软件形式实现的元素),该指令当被机器执行时, 使得机器执行本公开的各个实施例中以上结合图1-5描述的各种操作和功能。
根据一个实施例,提供了一种计算机程序,包括计算机可执行指令,所述计算机可执行指令在被执行时使至少一个处理器执行本公开的各个实施例中以上结合图1-5描述的各种操作和功能。
根据一个实施例,提供了一种计算机程序产品,包括计算机可执行指令,所述计算机可执行指令在被执行时使至少一个处理器执行本公开的各个实施例中以上结合图1-5描述的各种操作和功能。
上面结合附图阐述的具体实施方式描述了示例性实施例,但并不表示可以实现的或者落入权利要求书的保护范围的所有实施例。在整个本说明书中使用的术语“示例性”意味着“用作示例、实例或例示”,并不意味着比其它实施例“优选”或“具有优势”。出于提供对所描述技术的理解的目的,具体实施方式包括具体细节。然而,可以在没有这些具体细节的情况下实施这些技术。在一些实例中,为了避免对所描述的实施例的概念造成难以理解,公知的结构和装置以框图形式示出。
本公开内容的上述描述被提供来使得本领域任何普通技术人员能够实现或者使用本公开内容。对于本领域普通技术人员来说,对本公开内容进行的各种修改是显而易见的,并且,也可以在不脱离本公开内容的保护范围的情况下,将本文所定义的一般性原理应用于其它变型。因此,本公开内容并不限于本文所描述的示例和设计,而是与符合本文公开的原理和新颖性特征的最广范围相一致。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (9)

  1. 一种冗余通信系统的通信方法,所述冗余通信系统包括第一发送端、第二发送端、第一接收端、第二接收端、数据源,其中,
    所述第一发送端和所述第二发送端分别从所述数据源接收同一个数据包的第一拷贝和第二拷贝,其中,所述第一拷贝具有高优先级的标签,所述第二拷贝具有低优先级的标签,
    所述第一发送端向所述第一接收端发送所述第一拷贝,所述第二发送端保留所述第二拷贝;
    所述第一发送端在接收到来自所述第一接收端的“确认消息”之后,向所述第二送端发送表示发送成功的“成功消息”,所述第二发送端在接收到所述“成功消息”时丢弃所述第二拷贝;
    如果所述第一发送端在第一预定时间段内没有接收到“确认消息”,则向所述第二发送端发送表示发送失败的“失败消息”,所述第二发送端在接收到所述“失败消息”时向所述第二接收端发送所述第二拷贝。
  2. 如权利要求1所述的方法,还包括:
    如果所述第二发送端在第二预定时间段内既没有接收到所述“成功消息”也没有接收到所述“失败消息”,所述第二发送端向所述第二接收端发送所述第二拷贝。
  3. 如权利要求1或2所述的方法,其中,所述第一发送端与所述第一接收端之间的通信方式以及所述第二发送端与所述第二接收端之间的通信方式包括WiFi、5G、有线通信中的任意一项。
  4. 如权利要求1或2所述的方法,其中,所述第一拷贝和所述第二拷贝的标签通过以下方式中的至少一种预先进行标记:
    将所述第一发送端标记为主发送端,将发送给所述主发送端和来自所述主发送端的数据包的拷贝标记为高优先级,将所述第二发送端标记为次发送端,将发送给所述次发送端和来自所述次发送端的数据包的拷贝标记为低优先级;
    将所述第一发送端和所述第二发送端分别标记为“奇”发送端和“偶”发送端,当数据包的编号为奇数,则将来自和发往“奇”发送端的拷贝标记为高优先级,则将来自 和发往“偶”发送端的拷贝标记低优先级,反之亦然;
    对于同一个数据包的拷贝随机将其中一个标记低高先级,另一个标记低优先级。
  5. 一种通信方法,包括:
    发送端从数据源接收数据包的拷贝,
    检查所述拷贝的标签是高优先级还是低优先级;
    在所述拷贝的标签是高优先级的情况下:
    所述发送端将所述拷贝发送给对应的接收端;
    在接收到来自所述接收端的“确认消息”之后,所述发送端向具有同一数据包的另一拷贝的另一发送端发送表示发送成功的“成功消息”;
    如果所述发送端在预定时间段内没有接收到“确认消息”,则向所述另一发送端发送表示发送失败的“失败消息”;
    在所述拷贝的标签是低优先级的情况下:
    所述发送端保留所述拷贝;
    当所述发送端从具有同一数据包的另一拷贝的另一发送端接收到“成功消息”时丢弃所述拷贝,当所述发送端从所述另一发送端接收到“失败消息”时,将所述拷贝发送给对应的接收端;
    如果所述发送端在预定时间段内既没有接收到所述“成功消息”也没有接收到所述“失败消息”,所述发送端将所述拷贝发送给对应的接收端。
  6. 一种通信设备(500),包括:
    接收单元(502),被配置为从数据源接收数据包的一个拷贝,
    优先级判断单元(504),被配置为检查所述拷贝的标签是高优先级还是低优先级;
    收发单元(506),
    在所述拷贝的标签是高优先级的情况下,所述收发单元(506)被配置为:
    将所述拷贝发送给对应的接收端;
    在接收到来自所述接收端的“确认消息”之后,向具有同一数据包的另一拷贝的另一发送端发送表示发送成功的“成功消息”;
    如果在预定时间段内没有接收到“确认消息”,则向所述另一发送端发送表示发送失败的“失败消息”;
    在所述拷贝的标签是低优先级的情况下,所述收发单元(506)被配置为:
    保留所述拷贝;
    当从具有同一数据包的另一拷贝的另一发送端接收到“成功消息”时丢弃所述拷贝,当从所述另一发送端接收到“失败消息”时,将所述拷贝发送给对应的接收端;
    如果在预定时间段内既没有接收到所述“成功消息”也没有接收到所述“失败消息”,将所述拷贝发送给对应的接收端。
  7. 计算设备(600),包括:
    至少一个处理器(602);以及
    与所述至少一个处理器(602)耦合的一个存储器(604),所述存储器(604)用于存储指令,当所述指令被所述至少一个处理器(602)执行时,使得所述处理器(602)执行如权利要求5所述的方法。
  8. 一种非暂时性机器可读存储介质,其存储有可执行指令,所述指令当被执行时使得所述机器执行如权利要求5所述的方法。
  9. 一种计算机程序产品,所述计算机程序产品被有形地存储在计算机可读介质上并且包括计算机可执行指令,所述计算机可执行指令在被执行时使至少一个处理器执行根据权利要求5所述的方法。
PCT/CN2022/117081 2022-09-05 2022-09-05 通信方法、通信设备、计算设备和存储介质 WO2024050666A1 (zh)

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CN108702317A (zh) * 2016-02-29 2018-10-23 西门子股份公司 能冗余地运行的工业化的通信系统、用于其运行的方法和无线接收站
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CN114019784A (zh) * 2021-10-14 2022-02-08 北京航天晨信科技有限责任公司 一种vpx机箱冗余控制方法

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Publication number Priority date Publication date Assignee Title
CN108702317A (zh) * 2016-02-29 2018-10-23 西门子股份公司 能冗余地运行的工业化的通信系统、用于其运行的方法和无线接收站
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