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WO2018103437A1 - Procédé, dispositif, et système de transmission de données - Google Patents

Procédé, dispositif, et système de transmission de données Download PDF

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Publication number
WO2018103437A1
WO2018103437A1 PCT/CN2017/104467 CN2017104467W WO2018103437A1 WO 2018103437 A1 WO2018103437 A1 WO 2018103437A1 CN 2017104467 W CN2017104467 W CN 2017104467W WO 2018103437 A1 WO2018103437 A1 WO 2018103437A1
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WO
WIPO (PCT)
Prior art keywords
receiving
data packet
transit node
node
receiving end
Prior art date
Application number
PCT/CN2017/104467
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English (en)
Chinese (zh)
Inventor
冯迅
周翔波
刘伟安
Original Assignee
广州华多网络科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广州华多网络科技有限公司 filed Critical 广州华多网络科技有限公司
Publication of WO2018103437A1 publication Critical patent/WO2018103437A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/026—Co-operative diversity, e.g. using fixed or mobile stations as relays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a data transmission method, apparatus, and system.
  • the transmission quality between the client and other devices is a key factor affecting the user's service experience.
  • a transmission node is allocated to a client in a transmission network of a client, and a "user-side device” link is divided into a "user-transport node” and a "transport node-other device”.
  • Two links which can replace a poor quality link with two better quality links for higher link capacity and better coverage.
  • packet loss still occurs between the transit node and the client, and the quality of data transmission cannot be guaranteed.
  • the present application provides a data transmission method, apparatus, and system, which can improve data transmission quality between a transmission node and a client end in a transmission network of a client.
  • a data transmission method including the following steps:
  • the receiving end sends a negative acknowledgement corresponding to the lost data packet to the sending end and the transit node, respectively, and one of the transmitting end and the receiving end
  • the other is the primary transit node in the transport network of the client
  • the transit node is another transport node in the transport network except the primary transport node, for receiving the negation Forwarding to the sender after replying;
  • the sending end separately sends the lost data packet to the receiving end and the transit node, and the transit node is further configured to: after receiving the lost data packet, Send to the receiving end.
  • a data transmission method running on a sending end, including the following steps:
  • the transit node is a transit node other than the primary transit node in the transport network, and is configured to forward to the sending end after receiving the negative acknowledgement;
  • the data packet is sent to the receiving end and the transit node respectively, and the transit node is further configured to forward to the receiving end after receiving the data packet.
  • a data transmission method running on a receiving end, including the following steps:
  • the receiving end sends a negative acknowledgement corresponding to the lost data packet to the sending end and the transit node, respectively, where the sending end and the receiving end are both When one of them is a client, the other is a primary transit node in the transport network of the client, and the transit node is another transport node in the transport network except the primary transport node, and is used to receive the Forwarding the negative response to the sender;
  • the transit node is further configured to forward to the receiving end after receiving the lost data packet.
  • a data transmission method running on a transit node, comprising the following steps:
  • a data transmission apparatus for a transmitting end, including:
  • a first sending module configured to send a data packet to the receiving end, where one of the sending end and the receiving end is a user end, and the other is a primary transmitting node in the transmission network of the user end;
  • a receiving module configured to receive a negative response corresponding to the data packet sent by the receiving end or the transit node, where the negative response is sent by the receiving end to the sending end and the transit when the data packet is lost Sending by the node, the transit node is another transit node in the transport network except the primary transit node, and is configured to forward to the sending end after receiving the negative acknowledgement;
  • a second sending module configured to send the data packet to the receiving end and the transit node respectively, where the transit node is further configured to forward the data packet to the receiving end after receiving the data packet.
  • a data transmission apparatus for a receiving end, including:
  • a sending module configured to send a negative response corresponding to the lost data packet to the sending end and the transit node, respectively, when the data packet sent by the sending end to the receiving end is lost, where the sending end and the receiving end are When one of them is a client, the other is a primary transit node in the transport network of the client, and the transit node is a transport node other than the primary transport node in the transport network, and is used to receive Forwarding the negative response to the sending end;
  • a receiving module configured to receive the lost data packet sent by the sending end or the transit node, where the lost data packet is sent by the sending end to the receiving end and the receiving end when receiving the negative acknowledgement
  • the transit node sends the transit node is further configured to forward to the receiving end after receiving the lost data packet.
  • a data transmission apparatus for a transit node, including:
  • a receiving module configured to receive a negative response sent by the receiving end
  • a forwarding module configured to forward the negative response received by the receiving module to the sending end; when one of the sending end and the receiving end is a user end, and the other is a primary transmission in the transmission network of the user end a negative acknowledgement corresponding to the lost data packet sent by the receiving end when the data packet sent by the sending end to the receiving end is lost, and the transit node is in the transmission network.
  • the receiving module is further configured to receive the lost data packet, where the forwarding module is further configured to forward the lost data packet received by the receiving module to the receiving end, where the lost data packet is sent by the The terminal transmits when the negative acknowledgement is received.
  • a data transmission system comprising:
  • the receiving end is configured to send a negative response corresponding to the lost data packet to the sending end and the transit node, respectively, when the data packet sent by the sending end is lost, the sending end and the receiving end
  • one of the two ends is a client, the other is a primary transit node within the transport network of the client;
  • the transit node is a transit node other than the primary transit node in the transport network, and is configured to forward to the sending end after receiving the negative acknowledgement;
  • the sending end is configured to send the lost data packet to the receiving end and the transit node respectively when receiving the negative acknowledgement;
  • the transit node is further configured to forward to the receiving end after receiving the lost data packet.
  • a plurality of transmission nodes are allocated to a client in a transmission network of a client, one of which serves as a primary transmission node, and the remaining transmission nodes serve as transit nodes.
  • the party acting as the receiving end respectively sends a negative response corresponding to the lost data packet to the party that is the transmitting end and the transit node, and the transit node receives the negative response.
  • FIG. 1 is a network scenario diagram of data transmission according to an exemplary embodiment of the present application.
  • FIG. 2 is a flowchart of a data transmission method according to an exemplary embodiment of the present application.
  • FIG. 3 is a schematic diagram of a data transmission according to an exemplary embodiment of the present application.
  • FIG. 4a is a timing diagram of a data transmission method according to an exemplary embodiment of the present application.
  • FIG. 4b is a timing diagram of another data transmission method according to an exemplary embodiment of the present application.
  • FIG. 5 is a flowchart of another data transmission method according to an exemplary embodiment of the present application.
  • FIG. 6 is a flowchart of another data transmission method according to an exemplary embodiment of the present application.
  • FIG. 7 is a flowchart of another data transmission method according to an exemplary embodiment of the present application.
  • FIG. 8 is a block diagram of a data transmission apparatus according to an exemplary embodiment of the present application.
  • FIG. 9 is a block diagram of another data transmission apparatus according to an exemplary embodiment of the present application.
  • FIG. 10 is a block diagram of another data transmission apparatus according to an exemplary embodiment of the present application.
  • FIG. 11 is a schematic diagram of a data transmission system according to an exemplary embodiment of the present application.
  • first, second, third, etc. may be used to describe various information in this application, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
  • first information may also be referred to as the second information without departing from the scope of the present application.
  • second information may also be referred to as the first information.
  • word "if” as used herein may be interpreted as "when” or “when” or “in response to a determination.”
  • FIG. 1 is a network scene diagram for implementing data transmission according to an exemplary embodiment of the present application.
  • the network includes a user terminal 10, a transmission network 20 of the client 10, and other devices 30 (such as a certain area, a computer room, or a base station, etc.), and multiple transmission nodes (transport nodes) in the transmission network 20. 21 and transport node 22, etc., for the client 10 to communicate with other devices 30.
  • the client 10 sends a data request to the transmitting node 21, and the transmitting node forwards the data request to the other device 30, and the other device 30 sends the corresponding data packet to the transmitting node 21.
  • the transmitting node forwards the data packet to the client. 10.
  • the device as the user terminal 10 may be a device that can access the network, such as a mobile phone, a tablet computer, or a notebook.
  • packet loss still occurs between the transmission node 21 and the client terminal 10, and the quality of data transmission cannot be guaranteed.
  • the present application allocates at least two transmission nodes (transport node 21 and transmission node 22) to the client 10 in the transmission network 20 of the client 10, one of which serves as a primary transmission node, and the remaining transmission nodes serve as In the transit node, in actual application, there may be multiple transmission nodes.
  • FIG. 1 shows only two transmission nodes for convenience of example.
  • FIG. 2 is a flowchart of a data transmission method according to an exemplary embodiment of the present application, and the method may include the following steps S201 to S202:
  • step S201 when the data packet sent by the transmitting end to the receiving end is lost, the receiving end sends a negative acknowledgement corresponding to the lost data packet to the sending end and the transit node, respectively, the sending end and the receiving end.
  • the receiving end When one of the two ends is a client, the other is a primary transit node in the transport network of the client, and the transit node is another transit node in the transport network except the primary transport node, After receiving the negative acknowledgement, it is forwarded to the sender.
  • step S202 when receiving the negative response, the sending end sends the lost data packet to the receiving end and the transit node, respectively, and the transit node is further configured to receive the lost The data packet is forwarded to the receiving end.
  • the receiver records the sequence number of the lost packet and constructs a NACK (Negative-Acknowledgment), which is then sent to the sender. If the sender finds the corresponding The packet is resent.
  • NACK Negative-Acknowledgment
  • the present application transmits the negative acknowledgement and the lost data corresponding to the lost data packet through multiple channels of “sender-receiver” and “sender-transfer node-receiver” respectively. The packet guarantees that the receiving party receives the lost packet.
  • FIG. 3 is a schematic diagram of a data transmission according to an exemplary embodiment of the present application.
  • the transmission network 20 including the UE 10 and the UE, and the transmission node 21 and the transmission node 22 in the transmission network 20 are used.
  • the transmission node 21 is used as the primary transmission node
  • the transmission node 22 is used as the transmission node 22.
  • the transit node; the party as the sender/receiver may be the transit node 21 or the client 10, wherein the data transmitted from the transit node 21 to the client 10 is referred to as downlink data, and the data transmitted from the client 10 to the master transit node 21 It is called uplink data.
  • FIG. 4 is a timing diagram of a data transmission method according to an exemplary embodiment of the present application. The process of downlink data transmission in the embodiment of the present application is described in conjunction with FIG. 2, FIG. 3, and FIG. 4a, that is, the transmission node 21 functions as At the transmitting end, the client 10 acts as a receiving end.
  • the transmitting node 21 sends a data packet to the client 10.
  • the transmitting node 22 forwards to the transmitting node 21 upon receiving the negative acknowledgement.
  • the transmitting node 21 transmits the lost data packet to the UE 10 and the transmitting node 22, respectively.
  • the UE 10 receives the lost data packet sent by the transmission node 21 or the transmission node 22.
  • FIG. 4b is a timing diagram of another data transmission method according to an exemplary embodiment of the present application. Referring to FIG. 2, FIG. 3 and FIG. 4b, the process of uplink data transmission in the embodiment of the present application is described, that is, the UE 10 serves as a transmitting end, and the transmitting node 21 serves as a receiving end.
  • the client 10 sends a data packet to the transmission node 21.
  • the transmitting node 22 forwards the signal to the client 10 upon receiving the negative acknowledgement.
  • the UE 10 when receiving the negative response sent by the transmission node 21 or the transmission node 22, the UE 10 transmits the lost data packet to the transmission node 21 and the transmission node 22, respectively.
  • the transit node 22 after receiving the lost data packet sent by the UE 10, the transit node 22 forwards the data packet to the transport node 21.
  • the transmitting node 21 receives the lost data packet sent by the UE 10 or the transmitting node 22.
  • the above embodiment shows the process of separately transmitting lost data packets through a plurality of channels after the data packet is lost.
  • the receiving end sends a response corresponding to the lost data packet, and the transmitting end resends the lost data packet after receiving the negative acknowledgement, which may delay the sending and receiving of the data packet. Therefore, in some examples, during the first transmission of any data packet, the transmitting end may separately send the any data packet to the receiving end and the transit node, and the transit node receives the Any data packet is forwarded to the receiving end.
  • the same data packet is multiplexed to ensure that the receiving end can receive the data packet without having to wait until the data packet is lost and then resend, thereby speeding up data transmission.
  • FIG. 5 is a flowchart of another data transmission method according to an exemplary embodiment of the present application. It can be run on the sending end, as shown in Figure 5, the method includes the following steps:
  • S501 Send a data packet to the receiving end, where one of the sending end and the receiving end is a user end, and the other is a primary transmitting node in the transmission network of the user end.
  • S502 Receive a negative response corresponding to the data packet sent by the receiving end or the transit node, where the negative response is sent by the receiving end to the sending end and the transit node when the data packet is lost.
  • the transit node is a transit node other than the primary transit node in the transport network, and is configured to forward to the sending end after receiving the negative acknowledgement.
  • the data packet is sent to the receiving end and the transit node, and the transit node is further configured to forward the data packet to the receiving end after receiving the data packet.
  • the data transmission process between the receiving end, the transmitting end, and the transit node may refer to the embodiment shown in FIG. 2.
  • any one of the data packets may be sent to the receiving end and the transit node respectively during the first sending of any data packet, and the transit node receives any of the foregoing The data packet is forwarded to the receiving end.
  • FIG. 6 is a flowchart of another data transmission method according to an exemplary embodiment of the present application. It can be run on the receiving end, as shown in Figure 6, the method includes the following steps:
  • the receiving end when the data packet sent by the sending end to the receiving end is lost, the receiving end sends a negative response corresponding to the lost data packet to the sending end and the transit node, respectively, the sending end and the sending end
  • the receiving ends When one of the receiving ends is a subscriber end, the other is a primary transit node in the transport network of the subscriber end, and the transit node is another transport node in the transport network except the primary transport node, and is used for After receiving the negative acknowledgement, it is forwarded to the sender.
  • S602. Receive the lost data packet sent by the sending end or the transit node, where the lost data packet is sent by the sending end to the receiving end and the transit node when receiving the negative acknowledgement Sending, the transit node is further configured to forward to the receiving end after receiving the lost data packet.
  • the data transmission process between the receiving end, the transmitting end, and the transit node may refer to the embodiment shown in FIG. 2.
  • FIG. 7 is a flowchart of another data transmission method according to an exemplary embodiment of the present application. It can be run on a transit node, as shown in Figure 7, the method includes the following steps:
  • S702. Receive the lost data packet sent by the sending end, and forward the data packet to the receiving end, where the lost data packet is sent by the sending end when receiving the negative acknowledgement.
  • the data transmission process of the receiving end and the transmitting end may refer to the embodiment shown in FIG. 2 .
  • the present application also provides an embodiment of a data transmission device.
  • FIG. 8 is a block diagram of a data transmission apparatus 800, which may be used in a transmitting end, according to an exemplary embodiment.
  • the apparatus includes:
  • the first sending module 801 is configured to send a data packet to the receiving end, where one of the sending end and the receiving end is a user end, and the other is a primary transmitting node in the transmission network of the user end;
  • the receiving module 802 is configured to receive a negative acknowledgement corresponding to the data packet sent by the receiving end or the transit node, where the negative acknowledgement is sent by the receiving end to the sending end and the Transmitted by the transit node, the transit node is other than the primary transport node in the transport network a transmitting node, configured to forward to the sending end after receiving the negative acknowledgement;
  • the second sending module 803 is configured to send the data packet to the receiving end and the transit node respectively, where the transit node is further configured to forward to the receiving end after receiving the data packet.
  • the first sending module 801 is further configured to:
  • the any data packet is sent to the receiving end and the transit node respectively, and the transit node forwards the data packet to the receiving end after receiving any one of the data packets.
  • FIG. 9 is a block diagram of another data transmission apparatus 900 according to an exemplary embodiment of the present application, which may be used for a receiving end. As shown in FIG. 9, the apparatus includes:
  • a sending module 901 configured to send, when the data packet sent by the sending end to the receiving end is lost, a negative acknowledgement corresponding to the lost data packet to the sending end and the transit node, where the sending end and the sending end
  • the sending end and the sending end When one of the receiving ends is a UE, the other is a primary transit node in the transport network of the UE, and the transit node is a transport node other than the primary transit node in the transport network, Forwarding to the sending end after receiving the negative acknowledgement;
  • a receiving module 902 configured to receive the lost data packet sent by the sending end or the transit node, where the lost data packet is sent by the sending end to the The receiving end and the transit node send, and the transit node is further configured to forward to the receiving end after receiving the lost data packet.
  • FIG. 10 is a block diagram of another data transmission apparatus 1000 according to an exemplary embodiment of the present application, which may be used in a transit node, as shown in FIG. 10, the apparatus includes:
  • the receiving module 1001 is configured to receive a negative response sent by the receiving end.
  • the forwarding module 1002 is configured to forward the negative response received by the receiving module to the sending end; when one of the sending end and the receiving end is a user end, and the other is the main in the transmission network of the user end a transmission node, the negative response is a negative response corresponding to the lost data packet sent by the receiving end when the data packet sent by the sending end to the receiving end is lost, and the transit node is the transmission network All other transmission nodes except the primary transmission node;
  • the receiving module 1001 is further configured to receive the lost data packet, where the forwarding module 1002 is further configured to forward the lost data packet received by the receiving module to the receiving end, the lost data.
  • the packet is transmitted by the transmitting end upon receiving the negative acknowledgement.
  • FIG. 11 is a schematic diagram of a data transmission system according to an exemplary embodiment of the present application. As shown in FIG. 11, the transmission system includes:
  • the receiving end is configured to send a negative response corresponding to the lost data packet to the sending end and the transit node, respectively, when the data packet sent by the sending end is lost, the sending end and the receiving end
  • the other is a primary transit node within the transport network of the client.
  • the transit node is a transit node other than the primary transit node in the transport network, and is configured to forward to the sending end after receiving the negative acknowledgement.
  • the transmitting end is configured to send the lost data packet to the receiving end and the transit node respectively when receiving the negative acknowledgement.
  • the transit node is further configured to forward to the receiving end after receiving the lost data packet.
  • the sending end 1101 is further configured to send the any data packet to the receiving end and the transit node, respectively, in a first sending process of any data packet.
  • the transit node forwards the any data packet to the receiving end after receiving the data packet.
  • the device embodiment since it basically corresponds to the method embodiment, reference may be made to the partial description of the method embodiment.
  • the device embodiments described above are merely illustrative, wherein the modules described as separate components may or may not be physically separate, and the components displayed as modules may or may not be physical modules, ie may be located A place, or it can be distributed to multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the objectives of the present application. Those of ordinary skill in the art can understand and implement without any creative effort.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Communication Control (AREA)

Abstract

La présente invention concerne un procédé, un dispositif, et un système de transmission de données. Le procédé comprend les étapes suivantes : lorsqu'un paquet de données envoyé à un terminal de réception par un terminal d'envoi est perdu, le terminal de réception envoie au terminal d'envoi et à un nœud de transit respectivement, un accusé de réception négatif correspondant au paquet de données perdu, l'un du terminal d'envoi et du terminal de réception étant un terminal d'utilisateur et l'autre étant un nœud de transmission maître dans un réseau de transmission du terminal d'utilisateur, le nœud de transit étant un nœud de transmission, autre que le nœud de transmission maître, dans le réseau de transmission, et étant utilisé pour transmettre, après réception de l'accusé de réception négatif, l'accusé de réception négatif au terminal d'envoi ; et, à réception de l'accusé de réception négatif, le terminal d'envoi envoie au terminal de réception et au nœud de transit respectivement, le paquet de données perdu, le nœud de transit étant également utilisé pour transmettre, après réception du paquet de données perdu, le paquet de données perdu au terminal de réception. Selon le mode de réalisation fourni par la présente invention, la qualité de transmission de données entre un nœud de transmission dans un réseau de transmission d'un terminal d'utilisateur et le terminal d'utilisateur peut être améliorée.
PCT/CN2017/104467 2016-12-09 2017-09-29 Procédé, dispositif, et système de transmission de données WO2018103437A1 (fr)

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CN104539402A (zh) * 2014-12-04 2015-04-22 长安大学 一种无线网络中的广播传输方法
CN106603205A (zh) * 2016-12-09 2017-04-26 广州华多网络科技有限公司 数据传输方法、装置和系统

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