WO2020164178A1 - Procédé et appareil de transmission de données - Google Patents

Procédé et appareil de transmission de données Download PDF

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Publication number
WO2020164178A1
WO2020164178A1 PCT/CN2019/080269 CN2019080269W WO2020164178A1 WO 2020164178 A1 WO2020164178 A1 WO 2020164178A1 CN 2019080269 W CN2019080269 W CN 2019080269W WO 2020164178 A1 WO2020164178 A1 WO 2020164178A1
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WO
WIPO (PCT)
Prior art keywords
side device
terminal
iab
iab node
identifier
Prior art date
Application number
PCT/CN2019/080269
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English (en)
Chinese (zh)
Inventor
刘菁
戴明增
朱元萍
卓义斌
曹振臻
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2020164178A1 publication Critical patent/WO2020164178A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/12—Setup of transport tunnels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections

Definitions

  • This application relates to the field of wireless communication technology, and in particular to a data transmission method and device.
  • the embodiments of the present application provide a data transmission method and device to solve the problem of how to transmit data between the IAB node and the terminal side device when the IAB node works in the NSA mode.
  • an embodiment of the present application provides a data transmission method.
  • the method includes: accessing an integrated backhaul IAB node to receive a first message and second information from a network side device, where the second information is used to indicate The radio bearer of the terminal-side device on the link between the terminal-side device and the IAB node, wherein the second information is carried in a peer adaptation layer between the IAB node and the network-side device and sent;
  • the IAB node sends the first message to the terminal side device through the radio bearer indicated by the second information.
  • an embodiment of the present application provides a data transmission method, which includes:
  • the network-side device when the anchor point of the data of the terminal-side device is on the IAB host, the network-side device establishes a GTP-U tunnel for the radio bearer of the IAB node for transmission Data of the terminal side device with the same quality of service QoS.
  • the anchor point of the data of the terminal-side device is on the IAB host, and the method further includes:
  • an embodiment of the present application provides a data transmission method.
  • the method includes: accessing the backhaul integrated IAB host to determine first indication information, where the first indication information is used to indicate that the IAB node cannot communicate with the terminal device Uplink data is offloaded; the IAB host sends the first indication information to the IAB node.
  • the embodiment of the present application provides a computer-readable storage medium, which stores computer-readable instructions.
  • the communication device is caused to perform any of the above-mentioned possibilities. Method in design.
  • FIG. 16 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • the terminal-side device splits the uplink data in two ways.
  • One way is to directly send the split data to the network-side device, and the network-side device transmits the uplink data of the terminal-side device.
  • the data is forwarded to the IAB host; one way is to send the offloaded data to the IAB node, and the IAB node further forwards it to the IAB host.
  • the IAB host forwards the received data from the network side device and/or IAB node to the EPC device.
  • the IAB node can choose a path to send the uplink data to the network side device, for example, by choosing to directly send the data to the network side Device, or choose to send data to the IAB host CU, and then the IAB host CU forwards it to the network side device.
  • the path selected by the IAB node is called the main path.
  • the anchor point of the data of the terminal side device is used as the IAB host for description.
  • the adaptation layer in FIG. 6 can be an independent protocol layer, or a sublayer or submodule of an existing protocol layer, for example, a sublayer of the RLC layer, or a sublayer of the MAC layer.
  • the embodiment of the present application There is no restriction on this.
  • the adaptation layer may have other names, which are not limited in the embodiment of the present application.
  • Step 706 The IAB node MT sends the first message to the IAB node DU.
  • the IAB node MT obtains the second information from the adaptation layer and sends it to the IAB node DU.
  • the bearer identifier is a data radio bearer identifier (for example: DRB ID) or a logical channel identifier allocated by the terminal-side device on the radio bearer of the Uu interface.
  • the identifier of the terminal-side device includes the NR cell global identifier (CGI) and the cell radio network temporary identity (C-RNTI); or, the identifier of the terminal-side device is the IAB
  • the second F1AP identifier assigned to the terminal-side device on the interface; or, the identifier of the terminal-side device includes the first F1AP identifier and the second F1AP identifier.
  • the IAB may send the fourth information used to indicate the IAB node that the terminal side device accesses to the network side device through the X2 interface. Further, the terminal side device accesses the IAB node DU, and the network side device needs to send data to the IAB node MT, so the fourth information may be used to indicate the IAB node MT that the terminal side device accesses.
  • the protocol stack architecture of the terminal side device, IAB node, IAB host, and network side device for data transmission can be referred to as shown in FIG. 11.
  • the network-side device serves as the primary station
  • the IAB host serves as the secondary station.
  • Step 1301 The IAB node obtains the second message from the terminal side device.
  • Step 1304 The network side device determines the radio bearer indicated by the fifth information received in the adaptation layer, and sends the second packet to the PDCP entity corresponding to the radio bearer for processing.
  • the IAB donor CU determines that the IAB node establishes SRB3 on the SCG according to the second indication information.
  • the IAB donor DU establishes the signaling plane bearer or BH RLC channel corresponding to the first logical channel indicated by the first logical channel identifier, and establishes the signal corresponding to the second logical channel indicated by the second logical channel identifier.
  • the signaling plane bears or the BH RLC channel for example, the signaling plane corresponding to the first logical channel identifier carries the SRB or BH RLC channel, and the signaling plane corresponding to the second logical channel identifier carries the SRB or BH RLC channel for the underlying parameters.
  • Configuration for example: perform corresponding RLC layer configuration, etc., and send the configuration result to the IAB host CU.
  • the SRB or BH RLC channel corresponding to the logical channel identifier is used to transmit which type of F1AP message, which can be fixed, for example: the SRB or BH RLC channel corresponding to the first logical channel identifier is used to transmit UE associated The F1AP message, the SRB or BH RLC channel corresponding to the second logical channel identifier is used to transmit the Non-UE associated F1AP message, and vice versa. Or, it may not be fixed. Therefore, the IAB host CU needs to further instruct the IAB host DU, that is, the IAB host CU informs the IAB host DU of the correspondence between the SRB or BH RLC channel corresponding to the logical channel and different types of F1AP messages.
  • the transceiver unit 1501 is configured to receive a first message and second information from a network side device, the second information is used to indicate the radio bearer of the terminal side device on the link between the terminal side device and the IAB node , Wherein the second information is carried in a peer-to-peer adaptation layer between the IAB node and the network side device and sent;
  • the transceiver unit 1501 is also used for:
  • the second information is carried in the adaptation layer, and sent to the network side device with the second message.
  • the processing unit 1502 is configured to carry second information in a peer-to-peer adaptation layer between a network-side device and an integrated IAB node for access and backhaul, and the second information is used to indicate that the terminal-side device is on the terminal-side
  • the identifier of the terminal-side device includes NR CGI and C-RNTI; or, the identifier of the terminal-side device is the first F1AP identifier allocated by the IAB node for the terminal-side device; or The identifier of the terminal-side device is the second F1AP identifier allocated by the IAB host to the terminal-side device; or, the identifier of the terminal-side device includes the first F1AP identifier and the second F1AP identifier.
  • the GTP-U tunnel established for the radio bearer of the terminal side device is the same as the radio bearer of the terminal side device.
  • the transceiver unit 1501 is configured to receive third indication information from an integrated access backhaul IAB node, where the third indication information is used to indicate that the previous hop link of the IAB node has a radio link failure RLF;
  • the first message includes fourth indication information, and the fourth indication information is used to indicate that RLF occurs on the access link of the terminal side device or the backhaul chain of the terminal side device RLF occurs on the road.

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

Abstract

Procédé et appareil de transmission de données. Le procédé comporte les étapes suivantes: un nœud d'accès et de raccordement intégré (IAB) reçoit un premier message et des secondes informations en provenance d'un dispositif côté réseau, les secondes informations étant utilisées pour indiquer un support radio d'un dispositif côté terminal sur une liaison entre le dispositif côté terminal et le nœud d'IAB, et les secondes informations étant transportées dans une couche d'adaptation entre le nœud d'IAB et le dispositif côté réseau pour l'émission; et le nœud d'IAB envoie, au moyen du support radio indiqué par les secondes informations, le premier message au dispositif côté terminal.
PCT/CN2019/080269 2019-02-15 2019-03-28 Procédé et appareil de transmission de données WO2020164178A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910117895.X 2019-02-15
CN201910117895.XA CN111586890B (zh) 2019-02-15 2019-02-15 一种数据传输方法及装置

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WO2020164178A1 true WO2020164178A1 (fr) 2020-08-20

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WO (1) WO2020164178A1 (fr)

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CN114390601A (zh) * 2020-10-16 2022-04-22 大唐移动通信设备有限公司 控制信令传输方法、装置、iab节点、源宿主和目标宿主
CN114390602A (zh) * 2020-10-16 2022-04-22 大唐移动通信设备有限公司 连接建立方法、装置、设备及存储介质
US20220345944A1 (en) * 2021-04-26 2022-10-27 T-Mobile Innovations Llc Internet protocol (ip) communication service over wireless integrated access and backhaul (iab) links

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CN115278817A (zh) * 2021-04-30 2022-11-01 华为技术有限公司 一种通信方法、装置及系统
CN115460711B (zh) * 2021-06-08 2024-04-26 中国移动通信集团重庆有限公司 业务流量分流方法、装置、电子设备和存储介质

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
CN114390601A (zh) * 2020-10-16 2022-04-22 大唐移动通信设备有限公司 控制信令传输方法、装置、iab节点、源宿主和目标宿主
CN114390602A (zh) * 2020-10-16 2022-04-22 大唐移动通信设备有限公司 连接建立方法、装置、设备及存储介质
CN114390601B (zh) * 2020-10-16 2023-08-29 大唐移动通信设备有限公司 控制信令传输方法、装置、iab节点、源宿主和目标宿主
CN114390602B (zh) * 2020-10-16 2023-09-19 大唐移动通信设备有限公司 连接建立方法、装置、设备及存储介质
US20220345944A1 (en) * 2021-04-26 2022-10-27 T-Mobile Innovations Llc Internet protocol (ip) communication service over wireless integrated access and backhaul (iab) links
US11778515B2 (en) * 2021-04-26 2023-10-03 T-Mobile Innovations Llc Internet protocol (IP) communication service over wireless integrated access and backhaul (IAB) links

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