WO2018133120A1 - Procédé de transmission de données, dispositif terminal, et dispositif de réseau - Google Patents

Procédé de transmission de données, dispositif terminal, et dispositif de réseau Download PDF

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Publication number
WO2018133120A1
WO2018133120A1 PCT/CN2017/072263 CN2017072263W WO2018133120A1 WO 2018133120 A1 WO2018133120 A1 WO 2018133120A1 CN 2017072263 W CN2017072263 W CN 2017072263W WO 2018133120 A1 WO2018133120 A1 WO 2018133120A1
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WO
WIPO (PCT)
Prior art keywords
control information
data
terminal device
multicast
multicast control
Prior art date
Application number
PCT/CN2017/072263
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English (en)
Chinese (zh)
Inventor
王宏
陈力
李秉肇
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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.)
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Publication date
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Priority to PCT/CN2017/072263 priority Critical patent/WO2018133120A1/fr
Priority to CN201780083764.3A priority patent/CN110178388B/zh
Publication of WO2018133120A1 publication Critical patent/WO2018133120A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • 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

  • the present application relates to the field of communications technologies, and in particular, to a data transmission method, a terminal device, and a network device.
  • MTC Machine Type Communication
  • LTE Long Term Evolution
  • the base station sends the same service data to multiple MTC terminals by using Single Cell Point to Multi-point (SC-PTM).
  • SC-PTM Single Cell Point to Multi-point
  • the base station determines the number of subframes used to send the SC-MCCH control information ( That is, the SC-MCCH control information is divided into a plurality of segments for transmission, and the start subframe for transmitting the SC-MCCH control information is indicated to the MTC terminal by the system message.
  • SC-MCCH Single Cell Multicast Control Channel
  • the MTC terminal determines, according to the system message, the start subframe to receive the first scheduling information (the first segment SC-MCCH control information used to schedule the SC-MCCH control information), and receives the first according to the first scheduling information.
  • the segmentation SC-MCCH controls the information and starts the timer at the same time.
  • the MTC terminal continues to receive the SC-MCCH control information; A) when the timer is running, the MTC terminal receives the second scheduling information (the second segment for scheduling the SC-MCCH control information) When the SC-MCCH control information is used, the MTC terminal stops the timer and receives the second segment SC-MCCH control information according to the second scheduling information, and restarts the timer again; B) when the timer runs out, the MTC terminal If the scheduling information of the SC-MCCH control information is not received, it is determined that the SC-MCCH control information has been transmitted, and the SC-MCCH control information is stopped from being continuously received.
  • the above describes only the first two segments of the SC-MCCH control information receiving manner, and so on, until the MTC terminal does not receive the segment scheduling information of the SC-MCCH control information when the timer runs out, then stops receiving the SC. -MCCH control information.
  • the complexity of the MTC terminal is increased due to the introduction of a timer in the MTC terminal; on the other hand, after receiving the last segment SC-MCCH control information, the MTC terminal needs to continue receiving until timing.
  • the device timeout increases the power consumption of the MTC terminal.
  • the embodiment of the present application provides a data transmission method, a terminal device, and a network device, which not only reduces the complexity of the terminal device, but also reduces the power consumption of the terminal device.
  • an embodiment of the present application provides a data transmission method, including:
  • the terminal device receives first control information from the network device, where the first control information is used to control transmission of the first data;
  • the terminal device Receiving, by the terminal device, the first data according to the first control information, where the first data includes first multicast control information, where the first multicast control information is used to control transmission of multicast service data;
  • the first control information or the first data carries the first indication information, where the first indication information is used by the terminal device to determine whether to continue to receive the second multiple after the first multicast control information.
  • Broadcast control information the second multicast control information is used to control transmission of the multicast service data.
  • the first control information is received by the terminal device from the network device, and the first control information is used to control transmission of the first data. Further, the terminal device receives the first data according to the first control information, where the first data includes first multicast control information, and the first multicast control information is used to control multicast service data. transmission.
  • the first control information or the first data carries the first indication information, where the first indication information is used by the terminal device to determine whether to continue to receive the second multiple after the first multicast control information.
  • the control information is broadcasted so that the terminal device determines whether to continue to receive the second data after the first data according to the first indication information.
  • the data transmission method provided by the embodiment of the present application does not need to introduce a timer in the terminal device (that is, does not increase the complexity of the terminal device), and does not appear in the multicast control information to be transmitted.
  • the terminal device continues to receive. Therefore, the data transmission method provided by the embodiment of the present application reduces the power consumption of the terminal device, thereby prolonging the standby time of the terminal device.
  • the method further includes:
  • the terminal device determines, according to the first indication information, to continue to receive the second multicast control information after the first multicast control information.
  • the method further includes:
  • the terminal device determines, according to the first indication information, that the second multicast control information does not exist, or does not need to continue to receive the second multicast control information after the first multicast control information.
  • the terminal device before the terminal device receives the first control information from the network device, the terminal device further includes:
  • the terminal device receives a system message from the network device, where the system message is used to control transmission of the first control information.
  • the second multicast control information is carried in the second data, the second data includes second indication information, and the second indication information is used by the terminal device to determine Whether to continue receiving the third multicast control information after the second multicast control information.
  • the first control information is downlink control information DCI.
  • the first indication information is carried in the first data
  • the first indication information is included in a header of the first data
  • the first data is used to encapsulate the Protocol Data Unit PDU of the first multicast control information.
  • an embodiment of the present application provides a data transmission method, including:
  • the network device sends first control information to the terminal device, where the first control information is used to control transmission of the first data;
  • the network device Transmitting, by the network device, the first data to the terminal device according to the first control information, where the first data includes first multicast control information, and the first multicast control information is used to control a multicast service Transmission of data;
  • the first control information or the first data carries the first indication information, where the first indication information is used by the terminal device to determine whether to continue to receive the second multiple after the first multicast control information.
  • Broadcast control information the second multicast control information is used to control transmission of the multicast service data.
  • the first control information is sent to the terminal device by using the network device, where the first control information is used to control transmission of the first data.
  • the network device is configured according to the first control signal Sending the first data to the terminal device, the first data includes first multicast control information, and the first multicast control information is used to control transmission of multicast service data.
  • the first control information or the first data carries the first indication information, where the first indication information is used by the terminal device to determine whether to continue to receive the second multiple after the first multicast control information.
  • the control information is broadcasted so that the terminal device determines whether to continue to receive the second data after the first data according to the first indication information.
  • the data transmission method provided by the embodiment of the present application does not need to introduce a timer in the terminal device (that is, does not increase the complexity of the terminal device), and does not appear in the multicast control information to be transmitted.
  • the terminal device continues to receive. Therefore, the data transmission method provided by the embodiment of the present application reduces the power consumption of the terminal device, thereby prolonging the standby time of the terminal device.
  • the first indication information is used to indicate that the second multicast control information is continued to be received after the first multicast control information.
  • the first indication information is used to indicate that the first multicast information is It is not necessary to continue receiving multicast control information after the broadcast control information.
  • the method before the network device sends the first control information to the terminal device, the method further includes:
  • the network device sends a system message to the terminal device, where the system message is used to control transmission of the first control information.
  • the first control information is downlink control information DCI.
  • the first data carries the first indication information
  • the first indication information is included in a header of the first data
  • the first data is used to encapsulate the first Protocol Data Unit PDU for Multicast Control Information.
  • the embodiment of the present application provides a terminal device, including:
  • a first receiving module configured to receive first control information from the network device, where the first control information is used to control transmission of the first data
  • a second receiving module configured to receive the first data according to the first control information, where the first data includes first multicast control information, where the first multicast control information is used to control multicast service data. transmission;
  • the first control information or the first data carries the first indication information, where the first indication information is used by the terminal device to determine whether to continue to receive the second multiple after the first multicast control information.
  • Broadcast control information the second multicast control information is used to control transmission of the multicast service data.
  • the terminal device further includes:
  • the first determining module is configured to determine, according to the first indication information, to continue to receive the second multicast control information after the first multicast control information.
  • the terminal device further includes:
  • the second determining module is configured to determine, according to the first indication information, that the second multicast control information does not exist, or that the second multicast control information does not need to be received after the first multicast control information.
  • the terminal device further includes:
  • the second multicast control information is carried in the second data, the second data includes second indication information, and the second indication information is used by the terminal device to determine Whether to continue receiving the third multicast control information after the second multicast control information.
  • the first control information is downlink control information DCI.
  • the first indication information is carried in the first data
  • the first indication information is included in a header of the first data
  • the first data is used to encapsulate the Protocol Data Unit PDU of the first multicast control information.
  • the embodiment of the present application provides a network device, including:
  • a first sending module configured to send first control information to the terminal device, where the first control information is used to control transmission of the first data
  • a second sending module configured to send the first data to the terminal device according to the first control information, where the first data includes first multicast control information, and the first multicast control information is used to control Transmission of multicast service data;
  • the first control information or the first data carries the first indication information, where the first indication information is used by the terminal device to determine whether to continue to receive the second multiple after the first multicast control information.
  • Broadcast control information the second multicast control information is used to control transmission of the multicast service data.
  • the first indication information is used to indicate that the second multicast control information is continued to be received after the first multicast control information.
  • the first indication information is used to indicate that the first multicast information is It is not necessary to continue receiving multicast control information after the broadcast control information.
  • the network device further includes:
  • a third sending module configured to send a system message to the terminal device, where the system message is used to control transmission of the first control information.
  • the second multicast control information is carried in the second data, the second data includes second indication information, and the second indication information is used by the terminal device to determine Whether to continue receiving the third multicast control information after the second multicast control information.
  • the first control information is downlink control information DCI.
  • the first data carries the first indication information
  • the first indication information is included in a header of the first data
  • the first data is used to encapsulate the first Protocol Data Unit PDU for Multicast Control Information.
  • an embodiment of the present application provides a terminal device, including: a receiver;
  • the receiver is configured to receive first control information from a network device, where the first control information is used to control transmission of the first data;
  • the receiver is further configured to receive the first data according to the first control information, where the first data includes a multicast control information, the first multicast control information being used to control transmission of multicast service data;
  • the first control information or the first data carries the first indication information, where the first indication information is used by the terminal device to determine whether to continue to receive the second multiple after the first multicast control information.
  • Broadcast control information the second multicast control information is used to control transmission of the multicast service data.
  • the embodiment of the present application provides a network device, including: a transmitter;
  • the transmitter is configured to send first control information to the terminal device, where the first control information is used to control transmission of the first data;
  • the transmitter is further configured to send the first data to the terminal device according to the first control information, where the first data includes first multicast control information, where the first multicast control information is used Control the transmission of multicast service data;
  • the first control information or the first data carries the first indication information, where the first indication information is used by the terminal device to determine whether to continue to receive the second multiple after the first multicast control information.
  • Broadcast control information the second multicast control information is used to control transmission of the multicast service data.
  • an embodiment of the present application provides a data transmission system, including the foregoing terminal device, and the foregoing network device.
  • the embodiment of the present application provides a data transmission method, a terminal device, a network device, and a data transmission system by using the foregoing various aspects, by using the first control information or the first data corresponding to the first multicast control information Determining whether the terminal device continues to receive the first indication information of the second multicast control information after the first multicast control information not only reduces the complexity of the terminal device, but also reduces the power consumption of the terminal device.
  • FIG. 1 is a schematic diagram of an application scenario of a data transmission method according to the present application
  • FIG. 2A is a schematic flowchart of Embodiment 1 of a data transmission method according to the present application.
  • FIG. 2B is a schematic diagram of data scheduling according to Embodiment 1 of a data transmission method of the present application;
  • 2C is a fragmentary schematic diagram 1 of multicast control information
  • 3A is a fragmentation diagram 2 of multicast control information
  • FIG. 3B is a schematic diagram of data scheduling according to Embodiment 2 of the data transmission method of the present application.
  • 4A is a schematic diagram 1 of data scheduling according to Embodiment 3 of the data transmission method of the present application.
  • 4B is a second schematic diagram of data scheduling according to Embodiment 3 of the data transmission method of the present application.
  • FIG. 5 is a schematic structural diagram of Embodiment 1 of a terminal device according to the present application.
  • Embodiment 2 of a terminal device according to the present application.
  • FIG. 7 is a schematic structural diagram of Embodiment 1 of a network device according to the present application.
  • FIG. 8 is a schematic structural diagram of Embodiment 2 of a network device according to the present application.
  • FIG. 1 is a schematic diagram of an application scenario of a data transmission method according to the present application.
  • the data transmission method of the present application can be applied to a Long Term Evolution (LTE) communication system or a future communication system, such as a fifth generation mobile communication technology (5-Generation, 5G).
  • LTE Long Term Evolution
  • 5G fifth generation mobile communication technology
  • the data transmission method according to the embodiment of the present application includes, but is not limited to, the foregoing application scenario, and the data transmission method provided by the embodiment of the present application may be used as long as the application scenario of the segmented transmission data is involved.
  • the communication system involved in the present application may include: at least one network device, and at least two terminal devices that communicate with the network device.
  • the communication between one network device and two terminal devices (such as the terminal device 1 and the terminal device 2) will be described as an example.
  • the present application is not limited to the above scenario, and the present application is also applicable to a scenario in which a network device performs unicast communication with a single terminal device, or a scenario in which a terminal device and a terminal device perform unicast or multicast communication.
  • the terminal device involved in the present application may include, but is not limited to, a mobile phone, a smart terminal, a multimedia device, a streaming media device, an MTC terminal (eg, a water meter, an electric meter, etc.), a wearable device, and a smart car.
  • a mobile phone e.g., a smart phone, a smart terminal, a multimedia device, a streaming media device, an MTC terminal (eg, a water meter, an electric meter, etc.), a wearable device, and a smart car.
  • the network device involved in the present application may be any device in a cellular communication network, for example, a base station (for example, an access point), and the base station may refer to an access network through one or more sectors on an air interface.
  • a device that communicates with a wireless terminal device may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), or a base station configuration in the 5G, such as a gNB, a centralized unit, a distributed unit, or the like, is not limited in the embodiment of the present application.
  • BTS Base Transceiver Station
  • NodeB base station
  • NodeB evolved base station
  • LTE NodeB or eNB or e-NodeB, evolutional Node B
  • a base station configuration in the 5G such as a gNB, a
  • FIG. 2A is a schematic flowchart of a data transmission method according to Embodiment 1 of the present application
  • FIG. 2B is a schematic diagram of data scheduling according to Embodiment 1 of the data transmission method of the present application
  • FIG. 2C is a fragmentation schematic diagram 1 of multicast control information.
  • the method in this embodiment may include:
  • Step S201 The network device sends the first control information to the terminal device.
  • the network device sends first control information to the terminal device, where the first control information is used to control transmission of the first data.
  • the first control information includes first scheduling information for indicating a first resource (a channel resource used for the first data transmission).
  • the first control information is Downlink Control Information (DCI), and the DCI is carried on a Physical Downlink Control Channel (PDCCH) or carried in a PDCCH (for MPDCCH) for MTC service.
  • PDCH Physical Downlink Control Channel
  • PDCCH Physical Downlink Control Channel
  • MPDCCH for MPDCCH
  • the first resource may be a (Physical Downlink Shared Channel, PDSCH) resource.
  • PDSCH Physical Downlink Shared Channel
  • Step S202 The network device sends the first data to the terminal device according to the first control information.
  • the device sends data.
  • the first data involved in the present application may be data that is sent to the terminal device by the network device once (such as the Nth time, N is an integer greater than or equal to 1), and the second data may be sent to the terminal device by the network device for the N+1th time.
  • the first data and the second data may be a Packet Data Convergence Protocol (PDCP) Protocol Data Unit (PDU), or a PDCP Service Data Unit (Service).
  • PDCP Packet Data Convergence Protocol
  • PDU Packet Data Convergence Protocol Data Unit
  • Service Service
  • the data unit (SDU), or the radio link control (RLC) PDU, or the RLC SDU, or the like, or the data including the multicast control information, is not limited in the embodiment of the present application.
  • the first data and/or the second data may be carried on the PDSCH.
  • the network device sends the first data to the terminal device according to the first control information, for example, the network device sends the first scheduling information (for indicating the first resource) included in the first control information to the terminal on the first resource.
  • the device sends the first data.
  • the first indication information or the first data sent by the network device to the terminal device carries the first indication information, where the first indication information is used by the terminal device to determine whether to continue to receive the second data after receiving the first data.
  • the first indication information sent by the network device to the terminal device is used to indicate that the second data is continued to be received after the first data;
  • the terminal device continues to listen to the relevant channel (such as PDCCH, or MPDCCH, or PDSCH) according to the first indication information to receive the second data.
  • the indication manner of the first indication information may include, but is not limited to, the following indication manner: 1), the first indication information indicates that the first data is not (not) the data to be transmitted (the data to be transmitted refers to the network device at the beginning The last data in all data that needs to be sent to the terminal device when transmitting data to the terminal device; 2) The first indication information indicates that there is second data to be transmitted.
  • the first indication information sent by the network device to the terminal device is used to indicate that It is not necessary to continue to receive data after the first data; so that the terminal device stops listening to the relevant channel (such as PDCCH, or MPDCCH, or PDSCH) according to the first indication information after receiving the first data.
  • the relevant channel such as PDCCH, or MPDCCH, or PDSCH
  • the first indication information is carried in the first data
  • the first indication information is included in a header of the first data (for example, a first preset bit in the packet header).
  • a header of the first data for example, a first preset bit in the packet header.
  • different first indication information is corresponding.
  • 1 bit (such as bit i) in the header of the first data is used to carry the first indication information; when the bit i is the first preset value (such as 1), it is used to indicate that the first data is not (not) The last data in the data to be transmitted, or indicating that there is second data to be transmitted; when the bit i is a second preset value (such as 0), it is used to indicate that the first data is the last one of the data to be transmitted.
  • the value of the first preset bit may also be a value other than one, which is not limited in the embodiment of the present application.
  • the first indication information may be carried in the second preset bit in the first control information.
  • different first indication information is corresponding. For example, it is assumed that 1 bit (such as bit j) in the first control information is used to carry the first indication information; when the bit j is a third preset value (such as 1), it is used to indicate that the first data is not (not) to be The last data in the transmitted data, or indicating that there is second data to be transmitted; when the bit j is a fourth preset value (such as 0), it is used to indicate that the first data is the last data in the data to be transmitted.
  • the terminal device is not required to continue to receive the second data.
  • the value of the second preset bit may also be a value other than 1, which is not limited in the embodiment of the present application.
  • the first data includes the first multicast control information and the second data includes the second multicast control information.
  • the first data is a protocol data unit for encapsulating the first multicast control information (Protocol Data Unit, PDU).
  • PDU Protocol Data Unit
  • the first multicast control information may be the Nth multicast control information to be transmitted (such as control information carried in the SC-MCCH), and the second multicast control information may be The N+1th multicast control information to be transmitted; wherein the first multicast control information (for controlling transmission of the first multicast service data) and the second multicast control information (for controlling the second multicast service) The transmission of data) is complete multicast control information.
  • the multicast control information is sent to the network device by the upper-level network element of the network device node at one time, and the network device may not send the multicast control information to the network device at one time due to bandwidth limitation or load condition of the network device.
  • a terminal device in which a network device divides the complete multicast control information into a plurality of segments and sends them to the terminal device. It can be understood that any segment of the multicast control information is incomplete, and therefore the terminal device is required to receive complete multicast control information, that is, receive all segments of the multicast control information.
  • the multicast control information is divided into three pieces of segmented multicast control information (ie, segmented multicast control information 1, segmented multicast control information 2, and segmented multicast control information 3),
  • the first multicast control information may be segmented multicast control information of any one of the three segments, and the second multicast control information may be the next segment of the segmented multicast control information corresponding to the first multicast control information.
  • Multicast control information For example, assuming that the first multicast control information is the segmentation multicast control information 2 shown in FIG. 2C, the second multicast control information is the segmentation multicast control information 3 shown in FIG. 2C.
  • the first indication information is specifically used by the terminal device to determine whether to continue to receive the second multicast control information after receiving the first multicast control information.
  • the first indication information sent by the network device to the terminal device is used to indicate that the first multicast control is performed.
  • the terminal device continues to listen to the relevant channel (such as PDCCH, or MPDCCH, or PDSCH) according to the first indication information after receiving the first multicast control information to receive the second multicast. Control information.
  • the indication manner of the first indication information may include, but is not limited to, the following indication manner: 1), the first indication information indicates that the first multicast control information is not (not) the multicast control information to be transmitted (to be transmitted)
  • the broadcast control information refers to the last multicast control information in the multicast control information that needs to be sent to the terminal device when the network device starts to send the multicast control information to the terminal device; 2) the first indication information indicates that the The second multicast control information transmitted.
  • the first control information and the first data may be located in the same subframe or different subframes.
  • the network device may repeatedly transmit the first control information and the first data on different subframes in consideration of the coverage enhancement scenario.
  • the network device may repeatedly send the first control information on different subframes, and then repeatedly send the first data on different subframes.
  • Step S203 The terminal device receives the first control information from the network device.
  • the terminal device receives the first control information from the network device, where the first control information is used to control the transmission of the first data.
  • the first control information may be a DCI carried on the PDCCH, or the MPDCCH, or the EPDCCH, for scheduling transmission of the first data.
  • This step may be an optional step, that is, the terminal device may receive the first data by using a semi-persistent scheduling manner, without receiving the first control information every time.
  • the first control information may be a semi-persistent scheduling. Information or configuration information.
  • Step S204 The terminal device receives the first data according to the first control information.
  • the terminal device receives the first data according to the first control information. For example, the terminal device receives the first data on the first resource according to the first scheduling information (for indicating the first resource) included in the first control information.
  • the first indication information or the first data received by the terminal device from the network device carries the first indication information, where the first indication information is used by the terminal device to determine whether to continue to receive the second data after the first data.
  • the first indication information is used by the terminal device to determine whether to continue to receive the second data after the first data.
  • the first indication information is used by the terminal device to determine whether to continue to receive the second multicast control information after the first multicast control information.
  • the first multicast control information, the second multicast control information, and the indication manner of the first indication information refer to the related description in the foregoing step S202, and details are not described herein again.
  • the data transmission method provided by the embodiment of the present application does not need to introduce a timer in the terminal device (that is, does not increase the complexity of the terminal device), and does not appear in the terminal device still continues to receive when there is no multicast control information to be transmitted. Therefore, the data transmission method provided by the embodiment of the present application reduces the power consumption of the terminal device, thereby prolonging the standby time of the terminal device.
  • the size of the step number is not limited to the order of execution, and the order of execution of each step is determined by its function and internal logic, which is not limited in the embodiment of the present application.
  • the terminal device determines, according to the first indication information, The second data continues to be received after the first data. For example, the terminal device continues to listen to the relevant channel (such as PDCCH, or MPDCCH, or PDSCH) in order to receive the second data.
  • the relevant channel such as PDCCH, or MPDCCH, or PDSCH
  • the terminal device continues to receive the second control information (for controlling transmission of the second data), and receives the second data according to the second control information.
  • the second control information or the second data carries the second indication information, where the second indication information is used by the terminal device to determine whether to continue to receive the third data after the second data.
  • the third data may be data that is sent to the terminal device by the network device N+2 times.
  • the terminal device determines, according to the first indication information, that the second data does not need to be received after the first data. For example, the terminal device stops listening to the relevant channel (such as PDCCH, or MPDCCH, or PDSCH) and stops receiving the second data.
  • the relevant channel such as PDCCH, or MPDCCH, or PDSCH
  • the following part includes, for the first data, the first multicast control information, the second data includes the second multicast control information, and the first multicast control information and the second multicast control information are respectively a segmented multicast control information.
  • the example is explained.
  • the terminal device determines, by the terminal device, continuing to receive the second multicast control information after the first multicast control information according to the first indication information. For example, the terminal device continues to listen to the relevant channel (such as PDCCH, or MPDCCH, or PDSCH) in order to receive the second multicast control information.
  • the relevant channel such as PDCCH, or MPDCCH, or PDSCH
  • the terminal device continues to receive the second control information (for controlling transmission of the second data), and receives the second data according to the second control information, where the second data includes the second multicast control information.
  • the second control information or the second data carries the second indication information, where the second indication information is used by the terminal device to determine whether to continue to receive the third multicast control information after the second multicast control information.
  • Broadcast service data transmission may be: the next sub-segment after the segmented multicast control information corresponding to the second multicast control information in all the segments after the multicast control information is divided into multiple segments Segment multicast control information.
  • the terminal device determines, according to the first indication information, that the second multicast control information does not exist, thereby stopping receiving the multicast control. information. For example, the terminal device stops listening to the relevant channel (such as PDCCH, or MPDCCH, or PDSCH) and stops receiving any multicast control information.
  • the relevant channel such as PDCCH, or MPDCCH, or PDSCH
  • the terminal device determines, according to the first indication information, that the first multicast control information does not need to be Continue to receive the second multicast control information. For example, the terminal device stops listening to the relevant channel (such as PDCCH, or MPDCCH, or PDSCH), and stops receiving the second multicast control information.
  • the relevant channel such as PDCCH, or MPDCCH, or PDSCH
  • the first multicast control information and the second multicast control information are complete multicast control information
  • the first multicast control information and the second multicast control information are respectively a certain one.
  • the description of the segmentation multicast control information is not described here.
  • the method further includes: the network device sends a system message to the terminal device, where the system message is used to control the transmission of the first control information; correspondingly, before the step S203, the method further includes: the terminal device receiving the system message from the network device .
  • the system message may include: a start subframe (indicating a start subframe of the first control information to be sent).
  • system message may be a System Information Block (SIB) 20.
  • SIB System Information Block
  • system message can also be other types of system messages, which is not limited in the embodiment of the present application.
  • FIG. 3A is a schematic diagram of fragmentation of multicast control information
  • FIG. 3B is a schematic diagram of data scheduling according to Embodiment 2 of the data transmission method of the present application.
  • the network control device divides the multicast control information to be transmitted into multiple segments (for convenience of description, as illustrated in FIG. 3A by dividing into two segments as an example), and Considering the coverage enhancement scenario, each segmentation multicast control information and corresponding scheduling information need to be repeatedly transmitted (for convenience of description, as illustrated by taking repeated transmissions twice as shown in FIG. 3B) as an example for detailed description.
  • the system message may include: a starting subframe and a repetition quantity, where the number of repetitions is: the number of times each segment multicast control information and corresponding scheduling information needs to be repeatedly sent (for example, 2).
  • the network device may repeatedly send the first control information to the terminal device twice, and send the first data to the terminal device according to the first control information.
  • the first control information includes the first multicast information.
  • the first scheduling information corresponding to the control information includes the first multicast control information (such as the segmentation multicast control information 1).
  • the first control information or the first data includes first indication information, where the first indication information is used to indicate to continue to receive the second multicast control information after the first multicast control information, for example, the first indication information indication
  • the first multicast control information is not the last multicast control information in the multicast control information to be transmitted, or indicates that there is second multicast control information to be transmitted (such as the segmentation multicast control information 2).
  • the terminal device repeatedly receives the first control information from the network device for combining to decode the first control information, and repeatedly receives the first data according to the first control information for combining to decode the first data.
  • the first indication information is used to indicate that the second multicast control information is continued to be received after the first multicast control information, and the terminal device determines, according to the first indication information, that the first indication information is included in the first control information.
  • the second multicast control information (such as the segmentation multicast control information 2) continues to be received after the first multicast control information (such as the segmentation multicast control information 1).
  • the network device repeatedly sends the second control information to the terminal device twice, and sends the second data to the terminal device according to the second control information, where the second control information includes the second scheduling corresponding to the second multicast control information.
  • the second data includes second multicast control information (such as segmented multicast control information 2).
  • the second control information or the second data includes second indication information, where the second indication information is used to indicate that it is not necessary to continue to receive the multicast control information after the second multicast control information, for example, the second indication information indicates The second multicast control information is the last multicast control information in the multicast control information to be transmitted, or indicates that there is no third multicast control information to be transmitted.
  • the network device carries the indication information in the control information or data sent to the terminal device (for indicating whether the terminal device determines whether the current segmentation multicast control information is Continuing to receive the next segmentation multicast control information), so that the terminal device determines, according to the indication information, whether to continue receiving the next segmentation multicast control information after receiving the current segmentation multicast control information. It can be seen that compared with the prior art, the data transmission method provided by the embodiment of the present application reduces the power consumption of the terminal device, thereby prolonging the standby time of the terminal device.
  • the data transmission method between the network device and a certain terminal device is taken as an example for description; of course, the data transmission method between the network device and other terminal devices can be referred to the foregoing embodiment. Part, I will not repeat them here.
  • FIG. 4A is a schematic diagram 1 of data scheduling according to Embodiment 3 of the data transmission method of the present application
  • FIG. 4B is a schematic diagram 2 of data scheduling according to Embodiment 3 of the data transmission method of the present application.
  • each of the data to be transmitted and the corresponding DCI need to be repeatedly transmitted in consideration of the coverage enhancement scenario (for convenience of description, as shown in FIG. 4A and FIG. 4B, the transmission is repeated N times as an example. Description will be made in detail, where N is an integer greater than or equal to 1 as an example.
  • the system message may include: a starting subframe and a repetition quantity, and the number of repetitions (such as N).
  • the network device may repeatedly send the first DCI N times to the terminal device, and send the first data to the terminal device according to the first DCI.
  • the first indication information is included in the first DCI (eg, the second preset bit in the first DCI is used to indicate the first indication information), and the first indication information is used to indicate that the receiving is continued after the first data.
  • the second data for example, when the value of the second preset bit is equal to the third preset value (such as 1), is used to indicate the last data in the first data not to be transmitted, or indicates that there is a to-be-transmitted Second data. As shown in FIG.
  • the terminal device repeatedly receives the first DCI from the network device for combining to decode the first DCI, and repeatedly receives the first data according to the first DCI for combining to decode the first data. If the first indication information is included in the first DCI or the first data, the first indication information is used to indicate that the second data is continued to be received after the first data, and the terminal device determines to continue to receive after the first data according to the first indication information. Second data.
  • the network device repeatedly sends the second DCI N times to the terminal device, and sends the second data to the terminal device according to the second DCI.
  • the second DCI includes second indication information (eg, the second preset bit in the second DCI is used to indicate the second indication information), and the second indication information is used to indicate that the first data does not need to be continued. Number of reception According to, for example, when the value of the second preset bit is equal to the fourth preset value (such as 0), it is used to indicate that the second data is the last data in the data to be transmitted, or indicates that there is no Three data. As shown in FIG.
  • the first DCI or the second DCI in the embodiment of the present application may further include: a resource allocation indication, a PDSCH repetition number, an MPDCCH repetition number, and a Modulation and Coding Scheme (MCS), and of course, Other indications may be included, which are not limited in the embodiments of the present application.
  • a resource allocation indication e.g., a PDSCH repetition number, an MPDCCH repetition number, and a Modulation and Coding Scheme (MCS)
  • MCS Modulation and Coding Scheme
  • FIG. 5 is a schematic structural diagram of Embodiment 1 of a terminal device according to the present application.
  • the terminal device 50 provided in this embodiment includes:
  • the first receiving module 501 is configured to receive, by the network device, first control information, where the first control information is used to control transmission of the first data;
  • the second receiving module 502 is configured to receive the first data according to the first control information, where the first data includes first multicast control information, and the first multicast control information is used to control multicast service data. Transmission
  • the first control information or the first data carries the first indication information, where the first indication information is used by the terminal device to determine whether to continue to receive the second multiple after the first multicast control information.
  • Broadcast control information the second multicast control information is used to control transmission of the multicast service data.
  • the terminal device 50 further includes:
  • the first determining module is configured to determine, according to the first indication information, to continue to receive the second multicast control information after the first multicast control information.
  • the terminal device 50 further includes:
  • the second determining module is configured to determine, according to the first indication information, that the second multicast control information does not exist, or that the second multicast control information does not need to be received after the first multicast control information.
  • the terminal device 50 further includes:
  • a third receiving module configured to receive a system message from the network device, where the system message is used to control transmission of the first control information.
  • the second multicast control information is carried in the second data, the second data includes second indication information, and the second indication information is used by the terminal device to determine that the second multicast is Whether to continue receiving the third multicast control information after the control information.
  • the first control information is downlink control information DCI.
  • the first indication information is carried in the first data
  • the first indication information is included in a header of the first data, where the first data is used to encapsulate the first multiple A protocol data unit PDU that broadcasts control information.
  • the terminal device in this embodiment may be used to execute the technical method of any of the foregoing data transmission methods of the present application.
  • the implementation principle and technical effect are similar, and will not be described here.
  • FIG. 6 is a schematic structural diagram of Embodiment 2 of a terminal device according to the present application.
  • the terminal device 60 provided in this embodiment may include: a receiver 601, a processor 602, a memory 603, and at least one communication bus 604.
  • Communication bus 604 is used to implement a communication connection between components.
  • Memory 603 may include high speed RAM memory, and may also include non-volatile memory NVM, such as at least one disk memory, in which various programs may be stored for performing various processing functions and implementing the method steps of the present embodiments.
  • the receiver 601 in this embodiment may be a corresponding input interface having a communication function and a function of receiving information.
  • the terminal device 60 may further include a transmitter 605.
  • the transmitter 605 in this embodiment may be a corresponding output interface having a communication function and a function of transmitting information.
  • the transmitter 605 and the receiver 601 may be integrated in one communication interface, or may be two independent communication interfaces.
  • the receiver 601 is configured to receive first control information from the network device, where the first control information is used to control transmission of the first data.
  • the first control information or the first data carries the first indication information, where the first indication information is used by the terminal device to determine whether to continue to receive the second multiple after the first multicast control information.
  • Broadcast control information the second multicast control information is used to control transmission of the multicast service data.
  • the processor 602 is configured to, according to the first indication information, determine to continue to receive the second multicast control information after the first multicast control information.
  • the processor 602 is further configured to determine, according to the first indication information, that the second multicast control information does not exist, or that the second multicast control information does not need to continue to receive the second multiple after the first multicast control information. Broadcast control information.
  • the receiver 601 is further configured to: receive a system message from the network device, where the system message is used to control transmission of the first control information.
  • the second multicast control information is carried in the second data, the second data includes second indication information, and the second indication information is used by the terminal device to determine that the second multicast is Whether to continue receiving the third multicast control information after the control information.
  • the first control information is downlink control information DCI.
  • the first indication information is carried in the first data
  • the first indication information is included in a header of the first data, where the first data is used to encapsulate the first multiple A protocol data unit PDU that broadcasts control information.
  • the terminal device of this embodiment may be used to implement the technical solution of any of the foregoing data transmission methods of the present application, and the implementation principle and technical effects thereof are similar, and details are not described herein again.
  • FIG. 7 is a schematic structural diagram of Embodiment 1 of a network device according to the present application.
  • the network device 70 provided in this embodiment includes:
  • the first sending module 701 is configured to send, to the terminal device, first control information, where the first control information is used to control transmission of the first data;
  • the second sending module 702 is configured to send the first data to the terminal device according to the first control information, where the first data includes first multicast control information, where the first multicast control information is used Control the transmission of multicast business data lose;
  • the first control information or the first data carries the first indication information, where the first indication information is used by the terminal device to determine whether to continue to receive the second multiple after the first multicast control information.
  • Broadcast control information the second multicast control information is used to control transmission of the multicast service data.
  • the first indication information is used to indicate that the second multicast control information is continued to be received after the first multicast control information.
  • the first indication information is used to indicate the first multicast control information. There is no need to continue receiving multicast control information afterwards.
  • the network device 70 further includes:
  • a third sending module configured to send a system message to the terminal device, where the system message is used to control transmission of the first control information.
  • the second multicast control information is carried in the second data, the second data includes second indication information, and the second indication information is used by the terminal device to determine that the second multicast is Whether to continue receiving the third multicast control information after the control information.
  • the first control information is downlink control information DCI.
  • the first indication information is included in a header of the first data, where the first data is used to encapsulate the first multicast control Protocol Data Unit PDU for Information.
  • the network device in this embodiment may be used to implement the technical solution of any of the foregoing data transmission methods in the present application, and the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 8 is a schematic structural diagram of Embodiment 2 of a network device according to the present application.
  • the network device 80 provided in this embodiment may include: a transmitter 801, a processor 802, a memory 803, and at least one communication bus 804.
  • Communication bus 804 is used to implement communication connections between components.
  • Memory 803 may include high speed RAM memory, and may also include non-volatile memory NVM, such as at least one disk memory, in which various programs may be stored for performing various processing functions and implementing the method steps of the present embodiments.
  • the transmitter 801 in this embodiment may be a corresponding output interface having a communication function and a transmission information function.
  • the terminal device 80 may further include a receiver 805.
  • the receiver 805 in this embodiment may be a corresponding input interface having a communication function and a function of receiving information.
  • the transmitter 801 and the receiver 805 may be integrated in one communication interface, or may be two independent communication interfaces.
  • the transmitter 801 is configured to send first control information to the terminal device, where the first control information is used to control transmission of the first data.
  • the first control information or the first data carries the first indication information, where the first indication information is used by the terminal device to determine whether to continue to receive the second multiple after the first multicast control information.
  • Broadcast control information the second multicast control information is used to control transmission of the multicast service data.
  • the first indication information is used to indicate that the second multicast control information is continued to be received after the first multicast control information.
  • the first indication information is used to indicate the first multicast control information. There is no need to continue receiving multicast control information afterwards.
  • the sender 801 is further configured to: send a system message to the terminal device, where the system message is used to control transmission of the first control information.
  • the second multicast control information is carried in the second data, the second data includes second indication information, and the second indication information is used by the terminal device to determine that the second multicast is Whether to continue receiving the third multicast control information after the control information.
  • the first control information is downlink control information DCI.
  • the first indication information is included in a header of the first data, where the first data is used to encapsulate the first multicast control Protocol Data Unit PDU for Information.
  • the network device in this embodiment may be used to implement the technical solution of any of the foregoing data transmission methods in the present application, and the implementation principle and technical effects are similar, and details are not described herein again.
  • the application provides an embodiment of a data transmission system including: a network device and at least one terminal device.
  • the network device may adopt the foregoing configuration of the first embodiment and the second embodiment of the network device, and correspondingly, the technical solution of any of the foregoing data transmission methods may be implemented.
  • the terminal device can adopt the structures of the first embodiment and the second embodiment of the terminal device, and correspondingly, the technical solution of any of the foregoing data transmission methods can be executed.
  • the specific implementation principle and technical effects are similar, and are not described here.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the software functional unit described above is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods described in various embodiments of the present application. Part of the steps.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .
  • the aforementioned program can be stored in a computer readable storage medium.
  • the program when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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Abstract

La présente invention concerne un procédé de traitement de données, un dispositif terminal, et un dispositif de réseau. Le procédé comprend les étapes suivantes : un dispositif de réseau envoie des premières informations de commande à un dispositif terminal; le dispositif de réseau envoie des premières données au dispositif terminal d'après les premières informations de commande, les premières données comprenant des premières informations de commande de multidiffusion; en outre, le dispositif terminal reçoit les premières informations de commande, du dispositif de réseau, et reçoit les premières données d'après les premières informations de commande. Les premières informations de commande ou les premières données contiennent des premières informations d'indication d'après lesquelles le dispositif terminal détermine s'il faut continuer à recevoir des secondes informations de commande de multidiffusion après les premières informations de commande de multidiffusion. Le procédé de transmission de données, le dispositif terminal, et le dispositif de réseau décrits dans les modes de réalisation de la présente invention réduisent la consommation d'énergie d'un dispositif terminal, prolongeant ainsi le temps de veille du dispositif terminal.
PCT/CN2017/072263 2017-01-23 2017-01-23 Procédé de transmission de données, dispositif terminal, et dispositif de réseau WO2018133120A1 (fr)

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CN201780083764.3A CN110178388B (zh) 2017-01-23 2017-01-23 数据传输方法、终端设备及网络设备

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Citations (4)

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Publication number Priority date Publication date Assignee Title
CN1947449A (zh) * 2004-02-10 2007-04-11 高通股份有限公司 针对广播和多播服务的信令信息的传输
WO2010124475A1 (fr) * 2009-04-30 2010-11-04 华为技术有限公司 Procédé et dispositif permettant d'envoyer un message, procédé et dispositif permettant de recevoir un message
CN102138351A (zh) * 2009-04-27 2011-07-27 华为技术有限公司 多播组播业务控制信息的传输和获取方法、装置和系统
US20130128768A1 (en) * 2011-11-22 2013-05-23 Qualcomm Incorporated Method and apparatus for enhancing control channel transmission

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1947449A (zh) * 2004-02-10 2007-04-11 高通股份有限公司 针对广播和多播服务的信令信息的传输
CN102138351A (zh) * 2009-04-27 2011-07-27 华为技术有限公司 多播组播业务控制信息的传输和获取方法、装置和系统
WO2010124475A1 (fr) * 2009-04-30 2010-11-04 华为技术有限公司 Procédé et dispositif permettant d'envoyer un message, procédé et dispositif permettant de recevoir un message
US20130128768A1 (en) * 2011-11-22 2013-05-23 Qualcomm Incorporated Method and apparatus for enhancing control channel transmission

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