WO2020087500A1 - Procédé et dispositif de transmission de données - Google Patents

Procédé et dispositif de transmission de données Download PDF

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Publication number
WO2020087500A1
WO2020087500A1 PCT/CN2018/113689 CN2018113689W WO2020087500A1 WO 2020087500 A1 WO2020087500 A1 WO 2020087500A1 CN 2018113689 W CN2018113689 W CN 2018113689W WO 2020087500 A1 WO2020087500 A1 WO 2020087500A1
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WO
WIPO (PCT)
Prior art keywords
rnti
terminal device
network device
scheduling information
downlink data
Prior art date
Application number
PCT/CN2018/113689
Other languages
English (en)
Chinese (zh)
Inventor
单宝堃
王宏
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2018/113689 priority Critical patent/WO2020087500A1/fr
Publication of WO2020087500A1 publication Critical patent/WO2020087500A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • This application relates to the field of communication technology, and in particular, to a data transmission method and device.
  • UE User Equipment
  • eNB evolved Node B
  • RRC connection is established with the eNB, and data transmission is performed in the RRC connected state.
  • the amount of data is generally small. After the RRC connection is established, the smaller data is transmitted, so that most of the resources and UE power consumption are used for the RRC connection establishment process, the resources used to transmit data and The UE has less power consumption and low data transmission efficiency.
  • Embodiments of the present application provide a data transmission method and device, which are used to improve data transmission efficiency.
  • an embodiment of the present application provides a data transmission method, including:
  • the terminal device receives the wireless network temporary identification RNTI from the network device;
  • the terminal device monitors the scheduling information scrambled by the RNTI at the paging moment PO, and the scheduling information is used to schedule downlink data of the terminal device.
  • the method further includes: the terminal device receives the downlink data.
  • the RNTI is an RNTI dedicated to terminal equipment or an RNTI dedicated to paging.
  • the terminal device monitoring the scheduling information of the RNTI scrambling at the paging moment PO includes: the terminal device is idle in idle state and monitoring the RNTI scrambling at the PO The scheduling information.
  • the terminal device monitoring the scheduling information of the RNTI scrambling at the paging moment PO includes: the terminal device monitoring the RNTI scrambling in the public search space CSS and the PO The scheduling information; or, the terminal device monitors the scheduling information scrambled by the RNTI in a search space USS dedicated to the terminal device and at a paging moment PO.
  • an embodiment of the present application provides another data transmission method, including:
  • the network device sends the wireless network temporary identification RNTI to the terminal device;
  • the network device sends the RNTI scrambled scheduling information to the terminal device at a paging moment PO, and the scheduling information is used to schedule downlink data of the terminal device.
  • the method further includes: the network device sending the downlink data to the terminal device.
  • the RNTI is an RNTI dedicated to terminal equipment or an RNTI dedicated to paging.
  • the network device sends the RNTI scrambled scheduling information to the terminal device at the paging moment PO, including: The terminal device sends the scheduling information scrambled by the RNTI; or, the network device sends the scheduling information scrambled by the RNTI to the terminal device in a search space USS dedicated to the terminal device and at a paging moment .
  • an embodiment of the present application further provides a communication device, including a processor and a memory;
  • the processor is used to read and execute instructions from the memory to implement the method described in the first aspect.
  • an embodiment of the present application further provides a communication device, including a processor and a memory;
  • the processor is used to read and execute instructions from the memory to implement the method described in the second aspect.
  • an embodiment of the present application further provides a computer storage medium, including a program, for implementing the method according to the first aspect or the second aspect when the communication device runs the program.
  • an embodiment of the present application further provides a computer program product, including a program, for implementing the method according to the first aspect or the second aspect when the communication device runs the program.
  • the scheduling information for scheduling downlink data is delivered through the PO moment, which can avoid the RRC connection process, thereby reducing the terminal device power consumption and improving the resource utilization efficiency.
  • FIG. 1 is a schematic diagram of an application scenario of a communication system according to an embodiment of the present application
  • FIG. 2 is a schematic diagram of a data transmission method according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of another data transmission method according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of still another data transmission method according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 1 is a schematic diagram of a communication system application scenario disclosed in an embodiment of the present application.
  • the communication system can apply LTE network or Next Generation (NR or 5G) network.
  • the terminal device accesses the network through a network device, such as an evolved base station (Evolved Node B, eNB) in LTE, and interacts with the eNB to realize data transmission and reception.
  • a network device such as an evolved base station (Evolved Node B, eNB) in LTE, and interacts with the eNB to realize data transmission and reception.
  • the base station may also be a 5G base station gNB.
  • the foregoing terminal device may be a mobile phone, an intelligent terminal, a multimedia device, a streaming media device, etc., and the embodiments of the present application are not limited.
  • the above eNB is a bridge between the user terminal in the LTE network and the evolved packet core (Evolved Packet Core, EPC).
  • the eNBs are connected through the X2 interface. Its main functions are: radio resource management, IP header compression and User data stream encryption, Mobility Management Entity (MME) selection when user terminal is attached, routing user plane data to Serving Gateway (S-GW), organization and sending of paging messages, broadcasting of messages Organization and sending, measurement and measurement report configuration for the purpose of mobility or scheduling, etc.
  • MME Mobility Management Entity
  • FIG. 2 is a schematic flowchart of a data transmission method disclosed in an embodiment of the present application.
  • the execution subject of this method is the terminal device.
  • the terminal device receives the wireless network temporary identifier RNTI from the network device;
  • the terminal device is described using the UE as an example, and the network device is described using the eNB as an example.
  • the UE may receive the RNTI from the eNB in advance.
  • the RNTI is used to scramble the PDCCH, and the PDCCH is used to schedule the downlink data.
  • the RNTI may be a UE-specific RNTI, such as C-RNTI; or, the RNTI is a paging-specific RNTI, such as P-RNTI.
  • the UE may use the received RNTI to receive downlink data.
  • the terminal device monitors the PDCCH scrambled by the RNTI at the paging moment PO.
  • the PO monitors the P-RNTI scrambled PDCCH at the paging moment to receive the Paging message scheduled by the PDCCH.
  • the Paging message is carried on PDSCH.
  • the UE may monitor the RNTI scrambled PDCCH at the PO, and the PDCCH is used to schedule downlink data, for example, the downlink data is user plane data.
  • the RRC connection process can be avoided, thereby reducing the power consumption of the terminal device and improving the resource utilization efficiency.
  • FIG. 3 is a schematic flowchart of a data transmission method disclosed in an embodiment of the present application.
  • the terminal device receives the wireless network temporary identifier RNTI from the network device;
  • the terminal device is described using the UE as an example, and the network device is described using the eNB as an example.
  • the UE may receive the RNTI from the eNB in advance.
  • the RNTI is used to scramble the PDCCH, and the PDCCH is used to schedule the downlink data.
  • the RNTI may be a UE-specific RNTI, such as C-RNTI; or, the RNTI is a paging-specific RNTI, such as P-RNTI.
  • the UE may use the received RNTI to receive downlink data.
  • the RNTI is carried in an RRC connection reconfiguration (RRC Connection Reconfiguration) message or an RRC connection release (RRC Connection Release) message or an RRC early transmission data completion (RRC Early Data Request) message.
  • RRC Connection Reconfiguration RRC Connection Reconfiguration
  • RRC connection release RRC Connection Release
  • RRC Early Data Request RRC Early Data Request
  • the terminal device receives the RNTI from the network device in the connected state.
  • the terminal device After receiving the RNTI, the terminal device enters the idle state Idle.
  • the terminal device and / or network device stores the RNTI, and the network device stores the RNTI and the identification of the terminal device, so that the network device can determine the RNTI allocated to the terminal device based on the identification of the terminal device, or, So that the network device can determine the identity of the terminal device according to the allocated RNTI.
  • the network device receives the paging message and downlink data from the core network device.
  • the core network device obtains downlink data from the gateway, where the downlink data is downlink data of the terminal device.
  • the core network device sends a paging message and downlink data to the network device.
  • the core network device sends the paging message and downlink data to the network device through one message or two messages. For example, the core network device first sends a paging message to the network device, and then sends downlink data to the network device.
  • the paging message carries the identification of the terminal device, such as S-TMSI.
  • the terminal device monitors the PDCCH scrambled by the RNTI at the paging moment PO.
  • the network device After receiving the paging message from the core network device, the network device determines that the terminal device has downlink data arriving according to the terminal device identifier in the paging message.
  • the network device determines the RNTI allocated to the terminal device according to the terminal device identifier in the paging message.
  • the network device uses the determined RNTI to scramble the PDCCH, which is used to schedule downlink data.
  • the network device sends the PDCCH to the terminal device at the paging moment PO.
  • the terminal device monitors the PDCCH scrambled by the RNTI at the paging moment PO. If the RNTI scrambled PDCCH is detected, the downlink data is received according to the scheduling of the PDCCH.
  • the network device may send the PDCCH in a common search space (Common Search Space, CSS).
  • the network device may send the PDCCH in a terminal-specific search space (UE-specific Search Space, USS).
  • UE-specific Search Space USS
  • the PDCCH may be MPDCCH (MTC PDCCH) or NPDCCH (Narrowband PDCCH).
  • the terminal device receives downlink data from the network device.
  • This step is optional. If the terminal device monitors the PDCCH scrambled by the RNTI at S303, it receives downlink data scheduled by the PDCCH at this step.
  • the terminal device sends downlink data feedback to the network device.
  • step S305 the terminal device sends downlink data feedback to the network device in step S305, such as HARQ-ACK or HARQ-NACK, or ARQ-ACK or ARQ-NACK.
  • the network device sends downlink data feedback to the core network device.
  • This step is an optional step. If the network device receives downlink data feedback from the terminal device at S305, the network device may send downlink data feedback to the core network device.
  • the RRC connection process can be avoided, thereby reducing the power consumption of the terminal device and improving the resource utilization efficiency.
  • FIG. 4 is a schematic flowchart of a data transmission method disclosed in an embodiment of the present application.
  • the terminal device receives the wireless network temporary identifier RNTI from the network device;
  • the terminal device is described using the UE as an example, and the network device is described using the eNB as an example.
  • the UE may receive the RNTI from the eNB in advance.
  • the RNTI is used to scramble the PDCCH, and the PDCCH is used to schedule the downlink data.
  • the RNTI may be a UE-specific RNTI, such as C-RNTI; or, the RNTI is a paging-specific RNTI, such as P-RNTI.
  • the UE may use the received RNTI to receive downlink data.
  • the RNTI carries an RRC connection reconfiguration (RRC Connection Reconfiguration) message or an RRC connection release (RRC Connection Release) message or an RRC Early Data Complete (RRC Early Data Request) message.
  • RRC Connection Reconfiguration RRC Connection Reconfiguration
  • RRC connection release RRC Connection Release
  • RRC Early Data Complete RRC Early Data Request
  • the terminal device receives the RNTI from the network device in the connected state.
  • the terminal device After receiving the RNTI, the terminal device enters the idle state Idle.
  • the terminal device and / or network device stores the RNTI, and the network device stores the RNTI and the identification of the terminal device, so that the network device can determine the RNTI allocated to the terminal device based on the identification of the terminal device, or, So that the network device can determine the identity of the terminal device according to the allocated RNTI.
  • the network device receives the paging message from the core network device.
  • the core network device obtains a downlink data notification from the gateway, where the downlink data notification is used to indicate that downlink data arrives at the terminal device.
  • the core network device sends a paging message to the network device, and the paging message carries the identifier of the terminal device, for example, S-TMSI.
  • the network device restores the terminal device context and activates security.
  • the network device After receiving the paging message from the core network device, the network device determines that the terminal device has downlink data arriving according to the terminal device identifier in the paging message. The network device determines the terminal device context according to the terminal device identifier in the paging message, and restores the UE context and activates security.
  • This step may also be located between S405 and S406.
  • the network device sends a terminal device context recovery request to the core network device.
  • the network device determines the terminal device according to the paging message.
  • the network device sends a terminal device context recovery request to the core network device, for example, UE Context Resume Request, which is used to request the core network device to restore the context of the terminal device.
  • the network device receives the terminal device context recovery response from the core network device.
  • the core network device restores the terminal device context according to the terminal device context recovery request received in S404, and sends a terminal device context recovery response to the network device, such as UEContextResumeResponse, used to notify the network device to restore the terminal device Context.
  • UEContextResumeResponse used to notify the network device to restore the terminal device Context.
  • the network device obtains downlink data from the gateway.
  • the network device acquires the downlink data of the terminal device from the gateway.
  • the terminal device monitors the PDCCH scrambled by the RNTI.
  • the network device determines the RNTI of the terminal device according to the identifier of the terminal device in the paging message.
  • the network device uses the determined RNTI to scramble the PDCCH, which is used to schedule downlink data.
  • the network device sends the PDCCH to the terminal device at the paging moment PO.
  • the terminal device monitors the PDCCH scrambled by the RNTI at the paging moment PO. If the RNTI scrambled PDCCH is detected, the downlink data is received according to the scheduling of the PDCCH.
  • the network device may send the PDCCH in a common search space (Common Search Space, CSS).
  • the network device may send the PDCCH in a terminal-specific search space (UE-specific Search Space, USS).
  • UE-specific Search Space USS
  • the PDCCH may be MPDCCH (MTC PDCCH) or NPDCCH (Narrowband PDCCH).
  • the terminal device receives downlink data from the network device.
  • This step is an optional step. If the terminal device monitors the PDCCH scrambled by the RNTI at S407, it receives downlink data scheduled by the PDCCH at this step.
  • the terminal device sends downlink data feedback to the network device.
  • the terminal device receives downlink data in S408, the terminal device sends downlink data feedback to the network device in S409, such as HARQ-ACK or HARQ-NACK, or ARQ-ACK or ARQ-NACK.
  • the network device such as HARQ-ACK or HARQ-NACK, or ARQ-ACK or ARQ-NACK.
  • An embodiment of the present application further provides a communication device, including a processor and a memory, for implementing the functions of the terminal device in FIG. 2, FIG. 3, or FIG. 4.
  • An embodiment of the present application further provides a communication device, including a processor and a memory, for implementing the functions of the network device shown in FIG. 3 or FIG. 4.
  • the network device may be a base station.
  • the structure of the above communication device may be as shown in FIG. 5.
  • An embodiment of the present application further provides a computer storage medium, including a program, for implementing related functions of the terminal device or network device as shown in FIG. 2, or FIG. 3, or FIG. 4 when the communication apparatus runs the program.
  • An embodiment of the present application further provides a computer program product, including a program, for implementing related functions of a terminal device or a network device as shown in FIG. 2, or FIG. 3, or FIG. 4 when the communication apparatus runs the program.
  • the RRC connection process can be avoided, thereby reducing the power consumption of the terminal device and improving the resource utilization efficiency.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server or data center Transmit to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device including a server, a data center, and the like integrated with one or more available media.
  • the usable medium may be a magnetic medium (eg, floppy disk, hard disk, magnetic tape), optical medium (eg, DVD), or semiconductor medium (eg, solid state disk (SSD)), or the like.

Abstract

Selon les modes de réalisation, la présente invention concerne un procédé et un dispositif de transmission de données, ledit procédé comprenant les étapes suivantes : un dispositif terminal reçoit une identification temporaire de réseau radio (RNTI) provenant d'un dispositif de réseau ; le dispositif terminal surveille un PDCCH brouillé par la RNTI lors de l'occasion de radiomessagerie, le PDCCH étant utilisé pour ordonnancer des données de liaison descendante du dispositif terminal. En utilisant les modes de réalisation de la présente invention, il est possible de réduire le temps système de signalisation de transmission de données de liaison descendante, ce qui réduit la consommation d'énergie d'un dispositif terminal.
PCT/CN2018/113689 2018-11-02 2018-11-02 Procédé et dispositif de transmission de données WO2020087500A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/CN2018/113689 WO2020087500A1 (fr) 2018-11-02 2018-11-02 Procédé et dispositif de transmission de données

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Application Number Priority Date Filing Date Title
PCT/CN2018/113689 WO2020087500A1 (fr) 2018-11-02 2018-11-02 Procédé et dispositif de transmission de données

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WO2020087500A1 true WO2020087500A1 (fr) 2020-05-07

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102595624A (zh) * 2011-01-17 2012-07-18 华为技术有限公司 基于组的调度方法、ue及网络设备
CN103139868A (zh) * 2011-11-30 2013-06-05 华为技术有限公司 控制接入的方法、设备和系统
CN104322121A (zh) * 2012-07-24 2015-01-28 华为技术有限公司 下行控制信息的发送、接收方法、服务节点及用户设备
US20160165545A1 (en) * 2013-07-12 2016-06-09 Sharp Kabushiki Kaisha Terminal device, method, and integrated circuit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102595624A (zh) * 2011-01-17 2012-07-18 华为技术有限公司 基于组的调度方法、ue及网络设备
CN103139868A (zh) * 2011-11-30 2013-06-05 华为技术有限公司 控制接入的方法、设备和系统
CN104322121A (zh) * 2012-07-24 2015-01-28 华为技术有限公司 下行控制信息的发送、接收方法、服务节点及用户设备
US20160165545A1 (en) * 2013-07-12 2016-06-09 Sharp Kabushiki Kaisha Terminal device, method, and integrated circuit

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