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WO2018027985A1 - Procédé et appareil pour la transmission de données en liaison montante d'un dispositif terminal sans fil à large bande - Google Patents

Procédé et appareil pour la transmission de données en liaison montante d'un dispositif terminal sans fil à large bande Download PDF

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Publication number
WO2018027985A1
WO2018027985A1 PCT/CN2016/095038 CN2016095038W WO2018027985A1 WO 2018027985 A1 WO2018027985 A1 WO 2018027985A1 CN 2016095038 W CN2016095038 W CN 2016095038W WO 2018027985 A1 WO2018027985 A1 WO 2018027985A1
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WIPO (PCT)
Prior art keywords
terminal device
wireless broadband
coverage enhancement
information
broadband terminal
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2016/095038
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English (en)
Chinese (zh)
Inventor
杨育波
王轶
余政
周国华
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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 Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2016/095038 priority Critical patent/WO2018027985A1/fr
Priority to CN201680088286.0A priority patent/CN109526248A/zh
Publication of WO2018027985A1 publication Critical patent/WO2018027985A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals

Definitions

  • the embodiments of the present invention relate to communication technologies, and in particular, to an uplink data transmission method and apparatus for a wireless broadband terminal device.
  • the wireless broadband terminal device refers to a terminal device with a maximum channel bandwidth greater than 1.4 MHz.
  • the coverage enhancement is sent to the wireless broadband terminal device.
  • the configuration information includes that the enhanced configuration information includes a fixed number of signal repetitions. Generally, the fixed number of signal repetitions is four times, and the wireless broadband terminal device performs subsequent uplink data transmission according to the number of repetitions of the signal, that is, the same uplink is performed.
  • the data repetition transmission covers the number of signal repetitions included in the enhanced configuration information, thereby realizing the coverage enhancement of the wireless broadband mobile terminal, and the wireless broadband terminal device fixes the same signal repeatedly when the coverage enhancement is required, that is, regardless of the wireless The extent to which the broadband terminal equipment needs to be covered is enhanced, and the uplink data is repeatedly transmitted the same number of times.
  • the uplink data transmission method and device of the wireless broadband terminal device provided by the embodiment of the invention are used to improve the coverage enhancement effect of the wireless broadband terminal device.
  • an embodiment of the present invention provides an uplink data transmission method of a wireless broadband terminal device, including:
  • the wireless broadband terminal device refers to the terminal device with the maximum channel bandwidth greater than 1.4 MHz
  • the coverage enhancement configuration information includes the information of the repetition number used to indicate the target repetition number, and the target
  • the number of repetitions is heavy
  • the number of repetitions in the set, the number of repetitions includes at least two repetitions, and the selection of the number of repetitions of the target is more flexible. Therefore, the number of repetitions of the target used by the wireless broadband terminal device for uplink data transmission is more reasonable, and the coverage enhancement is improved. effect.
  • the method before the wireless broadband terminal device receives the coverage enhancement configuration information sent by the base station, the method further includes:
  • the wireless broadband terminal device receives the coverage enhancement indication information sent by the base station, and the coverage enhancement indication information is used to instruct the wireless broadband terminal to use the coverage enhancement mode to transmit the uplink data.
  • the wireless broadband terminal device before receiving the coverage enhancement indication information sent by the base station, the wireless broadband terminal device further includes:
  • the wireless broadband terminal device sends coverage enhancement request information to the base station, and the coverage enhancement request information is used to request the wireless broadband terminal device to transmit the uplink data by using the coverage enhancement mode.
  • the method before the wireless broadband terminal device sends the coverage enhancement request information to the base station, the method further includes:
  • the wireless broadband terminal device receives the power RSRP according to the measured reference signal of the serving cell, and determines that the wireless broadband terminal device needs to transmit the uplink data by using the coverage enhancement mode.
  • the wireless broadband terminal device receives the coverage enhancement indication information sent by the base station, including:
  • the wireless broadband terminal device receives the radio resource control RRC signaling sent by the base station, and the RRC signaling includes the coverage enhancement indication information.
  • the number of repetitions is the number of target repetitions.
  • the method before the wireless broadband terminal device receives the coverage enhancement configuration information sent by the base station, the method further includes:
  • the wireless broadband terminal device receives the pre-configuration information sent by the base station, where the pre-configuration information includes the repetition quantity set information;
  • the repetition number information is index information of the target repetition number in the repetition number set.
  • the wireless broadband terminal device receives the pre-configuration information sent by the base station, including:
  • the wireless broadband terminal receives the first system information block SIB; the first SIB includes pre-configuration information;
  • the wireless broadband terminal device receives the second SIB, and the second SIB includes pre-configuration information
  • the wireless broadband terminal device receives the broadcast message, and the broadcast message includes pre-configuration information.
  • the manner in which the transmission locations of the first SIB and the second SIB are determined is different.
  • the first SIB enhances the SIB of the machine type communication eMTC.
  • the wireless broadband terminal device receives the coverage enhancement configuration information sent by the base station, including:
  • the wireless broadband terminal device acquires downlink control information DCI in the user-specific search space of the physical downlink control channel PDCCH or the enhanced physical downlink control channel EPDCCH, where the DCI includes coverage enhancement configuration information.
  • the wireless broadband terminal device receives the coverage enhancement configuration information sent by the base station, including:
  • the wireless broadband terminal device receives the coverage enhanced wireless network temporary identifier CE-RNTI sent by the base station;
  • the wireless broadband terminal device acquires downlink control information DCI according to the CE-RNTI, and the DCI includes coverage enhancement configuration information.
  • the wireless broadband terminal device receives the coverage enhancement configuration information sent by the base station, including:
  • the wireless broadband terminal device receives the downlink control information DCI sent by the base station, where the DCI includes coverage enhancement configuration information;
  • the wireless broadband terminal device parses the DCI according to a preset rule to obtain coverage enhancement configuration information.
  • the coverage enhancement configuration information also includes:
  • Frequency hopping time interval information is used to indicate the target hopping time interval, the frequency hopping time interval information is the target hopping time interval, or the hopping time interval information is the target hopping time interval at the hopping time interval
  • the index information in the set, the target hopping time interval is one hopping time interval in the hopping time interval set, and the hopping time interval set includes at least two hopping time intervals;
  • the target hopping time interval is used to indicate that consecutive N subframes are uplinked with the same frequency. Frequency hopping after data transmission, the target hopping time interval is the number of N subframes, and N is an integer greater than or equal to 2.
  • the pre-configuration information also includes a set of frequency hopping time intervals.
  • an embodiment of the present invention provides an uplink data transmission method of a wireless broadband terminal device, including:
  • the wireless broadband terminal device refers to the terminal device with the maximum channel bandwidth greater than 1.4 MHz
  • the target repetition number is the set of repetition times.
  • a repetition number the repetition number set includes at least two repetition times;
  • the base station sends the coverage enhancement configuration information to the wireless broadband terminal device, and the coverage enhancement configuration information includes the repetition number information;
  • the repetition number information included in the coverage enhancement configuration information is The base station is determined according to the enhanced coverage requirement of the wireless broadband terminal device. Therefore, the number of target repetitions used by the wireless broadband terminal device for uplink data transmission is more reasonable, and the coverage enhancement effect is improved.
  • the base station before determining the repetition number information according to the coverage enhancement requirement of the wireless broadband terminal device, the base station further includes:
  • the base station sends the coverage enhancement indication information to the wireless broadband terminal device, where the coverage enhancement indication information is used to instruct the wireless broadband terminal to use the coverage enhancement mode to transmit the uplink data.
  • the method before the base station sends the coverage enhancement indication information to the wireless broadband terminal device, the method further includes:
  • the base station receives the coverage enhancement request information sent by the wireless broadband terminal device, and the coverage enhancement request information is used to request the wireless broadband terminal device to transmit the uplink data by using the coverage enhancement mode.
  • the method before the base station sends the coverage enhancement indication information to the wireless broadband terminal device, the method further includes:
  • the base station determines, according to the transmission performance of the uplink data sent by the wireless broadband terminal device, that the wireless broadband terminal device needs to transmit the uplink data by using the coverage enhancement mode.
  • the base station sends the coverage enhancement indication information to the wireless broadband terminal device, including:
  • the base station sends radio resource control RRC signaling to the wireless broadband terminal device, where the RRC signaling includes coverage enhancement indication information.
  • the base station sends a coverage enhancement configuration letter to the wireless broadband terminal device. Before the interest, it also includes:
  • the base station sends the pre-configuration information to the wireless broadband terminal device, where the pre-configuration information includes the repetition quantity set information; the repetition quantity information is index information of the target repetition quantity in the repetition quantity set.
  • the number of repetitions is the number of target repetitions.
  • the base station sends pre-configuration information to the wireless broadband terminal device, including:
  • the base station sends a first SIB to the wireless broadband terminal device, where the first SIB includes pre-configuration information;
  • the base station sends a second SIB to the wireless broadband terminal device, where the second SIB includes pre-configuration information;
  • the base station sends a broadcast message, where the broadcast message includes pre-configuration information
  • the manner in which the transmission locations of the first SIB and the second SIB are determined is different.
  • the base station sends coverage enhancement configuration information to the wireless broadband terminal device, including:
  • the base station sends downlink control information DCI in the user-specific search space of the physical downlink control channel PDCCH or the enhanced physical downlink control channel EPDCCH, where the DCI includes coverage enhancement configuration information.
  • the base station sends coverage enhancement configuration information to the wireless broadband terminal device, including:
  • the base station sends a coverage enhanced wireless network temporary identifier CE-RNTI to the wireless broadband terminal device;
  • the base station scrambles the cyclic redundancy code CRC of the DCI according to the CE-RNTI, where the DCI includes coverage enhancement configuration information;
  • the base station transmits DCI to the wireless broadband terminal device.
  • the base station sends coverage enhancement configuration information to the wireless broadband terminal device, including:
  • the base station generates a DCI according to a preset rule, where the DCI includes coverage enhancement configuration information
  • the base station transmits DCI to the wireless broadband terminal device.
  • the coverage enhancement configuration information also includes:
  • the frequency hopping time interval information is used to indicate the target hopping time interval, the hopping time interval information is the target hopping time interval, or the hopping time interval information is the index information of the target hopping time interval in the hopping time interval set.
  • the target hopping time interval is one hopping time interval in the hopping time interval set, and the hopping time interval set includes at least two hopping time intervals;
  • the target hopping time interval is used to indicate that the consecutive N subframes use the same frequency for uplink data transmission and then hop, the target hopping time interval is the number of N subframes, and N is an integer greater than or equal to 2.
  • the pre-configuration information also includes a set of frequency hopping time intervals.
  • an embodiment of the present invention provides an uplink data transmission device of a wireless broadband terminal device, where the device is deployed in a wireless broadband terminal device, where a maximum channel bandwidth of the wireless broadband terminal device is greater than 1.4 MHz, and the device includes: a receiver And a transmitter, where the receiver is configured to receive coverage enhancement configuration information sent by the base station, where the coverage enhancement configuration information includes repetition number information, the repetition number information is used to indicate the target repetition number, and the target repetition number is one of the repetition number sets.
  • the number of repetitions, the number of repetitions includes at least two repetitions; the transmitter is configured to perform uplink data transmission according to the coverage enhancement configuration information, and the target repetition number indicated by the repetition number information included in the coverage enhancement configuration information is in the repetition number set.
  • the number of repetitions and the number of repetitions includes at least two repetitions, and the selection of the number of repetitions of the target is more flexible. Therefore, the number of repetitions of the target used by the wireless broadband terminal device for uplink data transmission is more reasonable, and the coverage enhancement effect is improved. .
  • the receiver is further configured to receive coverage enhancement indication information sent by the base station, where the coverage enhancement indication information is used to instruct the wireless broadband terminal to transmit uplink data in a coverage enhancement manner.
  • the transmitter is further configured to send coverage enhancement request information to the base station, where the coverage enhancement request information is used to request the wireless broadband terminal device to transmit the uplink data in the coverage enhancement manner.
  • the device further includes:
  • the processor is configured to receive the power RSRP according to the measured reference signal of the serving cell, and determine that the wireless broadband terminal device needs to use the coverage enhancement manner to transmit the uplink data.
  • the receiver is specifically configured to receive radio resource control RRC signaling sent by the base station, where the RRC signaling includes coverage enhancement indication information.
  • the number of repetitions is the number of target repetitions.
  • the receiver is further configured to receive pre-configuration information sent by the base station, where the pre-configuration information includes the repetition quantity set information;
  • the repetition number information is index information of the target repetition number in the repetition number set.
  • the receiver is specifically configured to receive the first system information block SIB; the first SIB includes pre-configuration information;
  • the receiver is specifically configured to receive the second SIB, where the second SIB includes pre-configuration information
  • the receiver is specifically configured to receive a broadcast message, where the broadcast message includes pre-configuration information.
  • the manner in which the transmission locations of the first SIB and the second SIB are determined is different.
  • the first SIB enhances the SIB of the machine type communication eMTC.
  • the receiver is specifically configured to acquire downlink control information DCI in a user-specific search space of the physical downlink control channel PDCCH or the enhanced physical downlink control channel EPDCCH, where the DCI includes coverage enhancement configuration information.
  • the receiver is specifically configured to receive the coverage enhanced wireless network temporary identifier CE-RNTI sent by the base station, and obtain the downlink control information DCI according to the CE-RNTI, where the DCI includes coverage enhancement configuration information.
  • the receiver is specifically configured to receive downlink control information (DCI) sent by the base station, where the DCI includes coverage enhancement configuration information, and parse the DCI according to a preset rule to obtain coverage enhancement configuration information.
  • DCI downlink control information
  • the coverage enhancement configuration information also includes:
  • Frequency hopping time interval information is used to indicate the target hopping time interval, the frequency hopping time interval information is the target hopping time interval, or the hopping time interval information is the target hopping time interval at the hopping time interval
  • the index information in the set, the target hopping time interval is one hopping time interval in the hopping time interval set, and the hopping time interval set includes at least two hopping time intervals;
  • the target hopping time interval is used to indicate that the consecutive N subframes use the same frequency for uplink data transmission and then hop, the target hopping time interval is the number of N subframes, and N is an integer greater than or equal to 2.
  • the pre-configuration information also includes a set of frequency hopping time intervals.
  • an embodiment of the present invention provides an uplink data transmission device of a wireless broadband terminal device, where the device is deployed in a base station, including:
  • a processor configured to determine a repetition quantity information according to a coverage enhancement requirement of the wireless broadband terminal device, where the wireless broadband terminal device refers to a terminal device with a maximum channel bandwidth greater than 1.4 MHz, and the repetition quantity information is used to indicate the target repetition number, and the target is repeated.
  • the number of repetitions is a number of repetitions in the set of repetitions, and the set of repetitions includes at least two repetitions; the transmitter is configured to send coverage enhancement configuration information to the wireless broadband terminal device, and the coverage enhancement information includes the repetition number information.
  • the information about the number of repetitions included in the coverage enhancement configuration information is determined by the base station according to the requirement of coverage enhancement of the wireless broadband terminal device. Therefore, the number of repetitions of the target used by the wireless broadband terminal device for uplink data transmission is more reasonable, and the coverage enhancement effect is improved. .
  • the transmitter is further configured to send the coverage enhancement indication information to the wireless broadband terminal device, where the coverage enhancement indication information is used to instruct the wireless broadband terminal to transmit the uplink data in the coverage enhancement manner.
  • it also includes:
  • the receiver is configured to receive coverage enhancement request information sent by the wireless broadband terminal device, where the coverage enhancement request information is used to request the wireless broadband terminal device to use the coverage enhancement mode to transmit uplink data.
  • the processor is further configured to determine, according to the transmission performance of the uplink data sent by the wireless broadband terminal device, that the wireless broadband terminal device needs to transmit the uplink data by using an overlay enhancement manner.
  • the transmitter is specifically configured to send radio resource control RRC signaling to the wireless broadband terminal device, where the RRC signaling includes coverage enhancement indication information.
  • the transmitter is further configured to send the pre-configuration information to the wireless broadband terminal device, where the pre-configuration information includes the repetition quantity set information; the repetition quantity information is the index information of the target repetition quantity in the repetition quantity set.
  • the number of repetitions is the number of target repetitions.
  • the transmitter is specifically configured to send the first SIB to the wireless broadband terminal device, where the first SIB includes pre-configuration information;
  • the transmitter is specifically configured to send a second SIB to the wireless broadband terminal device, where the second SIB includes pre-configuration information;
  • the transmitter is specifically configured to send a broadcast message, where the broadcast message includes pre-configured information
  • the manner in which the transmission locations of the first SIB and the second SIB are determined is different.
  • the transmitter is specifically configured to send downlink control information DCI in a user-specific search space of the physical downlink control channel PDCCH or the enhanced physical downlink control channel EPDCCH, where the DCI includes coverage enhancement configuration information.
  • the transmitter is specifically configured to send the coverage enhanced wireless network temporary identifier CE-RNTI to the wireless broadband terminal device; the DCI cyclic redundancy code CRC is scrambled according to the CE-RNTI, and the DCI includes coverage enhancement. Configuration information; sending DCI to the wireless broadband terminal device.
  • the processor is specifically configured to generate DCI according to a preset rule, where the DCI includes coverage enhancement configuration information;
  • the transmitter is specifically configured to send the DCI to the wireless broadband terminal device.
  • the coverage enhancement configuration information also includes:
  • the frequency hopping time interval information is used to indicate the target hopping time interval, the hopping time interval information is the target hopping time interval, or the hopping time interval information is the index information of the target hopping time interval in the hopping time interval set.
  • the target hopping time interval is one hopping time interval in the hopping time interval set, and the hopping time interval set includes at least two hopping time intervals;
  • the target hopping time interval is used to indicate that the consecutive N subframes use the same frequency for uplink data transmission and then hop, the target hopping time interval is the number of N subframes, and N is an integer greater than or equal to 2.
  • the pre-configuration information also includes a set of frequency hopping time intervals.
  • Embodiment 1 is a schematic flowchart of Embodiment 1 of an uplink data transmission method of a wireless broadband terminal device according to the present invention
  • FIG. 2 is a schematic diagram of a first format of a DCI according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a second format of DCI in the prior art
  • Embodiment 4 is a schematic flowchart of Embodiment 2 of an uplink data transmission method of a wireless broadband terminal device according to the present invention
  • Embodiment 1 is a schematic structural diagram of Embodiment 1 of an uplink data transmission apparatus of a wireless broadband terminal device according to the present invention
  • FIG. 6 is a schematic structural diagram of Embodiment 2 of an uplink data transmission apparatus of a wireless broadband terminal device according to the present application.
  • the wireless communication system since the uplink transmission power of the terminal device is limited, coverage enhancement is required for the wireless broadband terminal equipment at some locations such as the cell edge, the basement, or the occlusion, to ensure the uplink data transmission of the wireless broadband terminal equipment. Reliability.
  • the wireless broadband terminal device when the coverage enhancement is required, the wireless broadband terminal device is implemented by repeatedly transmitting uplink data, wherein the repetition number is fixed, and the fixed repetition number is adopted regardless of the degree of coverage enhancement required by the wireless broadband terminal device.
  • the number of fixed repetitions may be less than the actual requirement, and the coverage enhancement requirement cannot be met, so that the coverage enhancement effect is not good, and the broadband terminal device needs to be covered with enhanced coverage.
  • the degree is weak, the number of fixed repetitions may be more than the actual demand, which will result in waste of resources.
  • the prior art adopts a fixed number of repetitions, and the repetition number setting is not reasonable enough to affect the coverage enhancement effect.
  • the base station configures the corresponding repetition times according to the coverage enhancement requirement of the wireless broadband terminal device, for example, the wireless broadband terminal device If the coverage enhancement requirement is weak, the number of repetitions of the configuration is small, and the coverage enhancement requirement of the wireless broadband terminal device is strong, and the number of repetitions of the configuration is large, thereby making the repetition time of the wireless broadband terminal device performing uplink data transmission more. Reasonable, improve coverage and enhance the effect.
  • the wireless broadband terminal devices described in the embodiments of the present invention all refer to terminal devices having a maximum channel bandwidth greater than 1.4 MHz.
  • Embodiment 1 is a schematic flowchart of Embodiment 1 of an uplink data transmission method of a wireless broadband terminal device according to the present invention.
  • the method in this embodiment is as follows:
  • the base station determines the repetition quantity information according to the coverage enhancement requirement of the wireless broadband terminal device.
  • the number of repetitions is used to indicate the number of repetitions of the target, and the number of repetitions of the target is the number of times the same signal is repeatedly transmitted when the wireless broadband terminal device performs uplink data transmission, and the number of repetitions of the target is one repetition number in the set of repetition times, and the number of repetitions
  • the collection contains at least two repetitions.
  • the repetition number information may be a target repetition number, for example: 2, 4, 6 or 8;
  • the number of repetitions may also be index information of the number of repetitions of the target in the set of repetitions.
  • the set of repetitions is ⁇ 2, 4, 8, 10 ⁇ , and the index information corresponding to 2, 4, 6, and 8 is 00, 01 respectively.
  • the index information may be sequentially encoded in the order of the number of repetitions in the set of repetition times, or may be sequentially encoded according to the position in the set of repetition times.
  • the present invention is not limited, for example, repeating If the number of times information is 00, the number of target repetitions is the first repetition number in the set of repetition times, that is, the number of repetitions of the target is 2; the number of repetitions is 11, indicating that the number of repetitions of the target is the fourth of the set of repetitions.
  • the number of repetitions that is, the number of repetitions of the target is 10; generally, the number of bits occupied by the index information of the number of times of coding target repetition is less than the number of bits occupied by the number of repetitions of the direct coding target, and therefore, the number of repetitions is the number of repetitions of the target.
  • Index information in the set of repetitions can save resources and improve resources Utilization.
  • the determining, by the base station, the target repetition number information includes, but is not limited to, the following implementation manners:
  • the base station transmits an uplink signal, such as a random access preamble signal, and a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) uplink transmission, which is received by the wireless broadband terminal device.
  • Data De Modulation Reference Signal (DMRS) signal, Sounding Reference Signal (SRS), etc., estimate the uplink signal to noise ratio ⁇ dB of the wireless broadband terminal device, and the wireless broadband
  • DMRS De Modulation Reference Signal
  • SRS Sounding Reference Signal
  • a SNR comparison method is to set the target repetition number to CEIL ( ⁇ 10). ( ⁇ 0- ⁇ )/10 ), where CEIL() is the upper rounding function and ⁇ is the repeat margin coefficient.
  • the base station sends coverage enhancement configuration information to the wireless broadband terminal device.
  • the coverage enhancement configuration information includes the repetition number information.
  • the base station sends coverage enhancement configuration information to the wireless broadband terminal device, including but not limited to the following possible implementation manners:
  • the base station sends downlink control information in a user-specific search space of a Physical Downlink Control Channel (PDCCH) or an Enhanced Physical Downlink Control Channel (EPDCCH).
  • PDCCH Physical Downlink Control Channel
  • EPDCCH Enhanced Physical Downlink Control Channel
  • DCI Downlink Control Information
  • the DCI includes coverage enhancement configuration information
  • the coverage enhancement information includes the number of repetition times.
  • the wireless broadband terminal device acquires the DCI in the user-specific search space of the PDCCH or the EPDCCH, and parses the DCI to obtain the coverage enhancement configuration information, where the coverage enhancement configuration information includes the repetition number information;
  • the DCI that covers the enhanced configuration information in the present invention adopts the first format; the downlink control signal in the prior art adopts the second format; the first format is different from the second format, where the first format may be DCI format 6 -0A format, as shown in Figure 2, the second format can be DCI format 0 format, as shown in Figure 3.
  • the wireless broadband terminal device and the base station pre-agreed the first format and the second format; the base station sends the downlink control signal in the first format in the user-specific search space of the PDCCH or the EPDCCH.
  • the base station sends the downlink control information of the second format in the common search space of the PDCCH;
  • the wireless broadband terminal device determines that the uplink data transmission is performed by using the coverage enhancement mode
  • the DCI is obtained in the user-specific search space of the PDCCH or the EPDCCH, and the DCI is parsed according to the first format to obtain the coverage enhancement configuration information, and the repetition number information is determined.
  • the DCI of different formats is distinguished by the search space.
  • the base station sends a coverage enhanced network temporary identifier (CE-RNTI) to the wireless broadband terminal device, and after receiving the CE-RNTI, the wireless broadband terminal device obtains the DCI by using the CE-RNTI, and the DCI includes Covers the enhanced configuration information, and the coverage enhancement information includes the number of repetitions.
  • CE-RNTI coverage enhanced network temporary identifier
  • the DCI including the coverage enhancement configuration information in the present invention adopts the first format; the DCI in the prior art adopts the second format.
  • the wireless broadband terminal device and the base station pre-agreed the first format and the second format; the base station uses the CE-RNTI to scramble the CRC of the first format DCI, and uses the Cell Radio Network Temporary Identifier (C- RNTI) scrambles the CRC of the DCI of the second format.
  • CE-RNTI Cell Radio Network Temporary Identifier
  • the CE-RNTI is used to descramble the DCI. If the descrambling is successful, the DCI is the DCI of the first format, and the DCI is parsed according to the first format. To obtain coverage enhancement configuration information and determine the number of repetitions.
  • the base station and the wireless broadband terminal device agree that a certain field or some field in the DCI of the second format is used to indicate coverage enhancement configuration information, for example, the CS for DMRS and OCC field in the DCI of the second format is used to indicate the number of repetitions. information.
  • the base station sends the DCI to the wireless broadband terminal device, and the wireless broadband terminal device parses the DCI of the second format according to the definition of each field of the agreed second format to obtain the coverage enhancement configuration information, and determines the repetition number information.
  • the wireless broadband terminal device After receiving the coverage enhancement configuration information sent by the base station, the wireless broadband terminal device performs S103.
  • S103 The wireless broadband terminal device performs uplink data transmission according to the coverage enhancement configuration information.
  • the wireless broadband terminal device parses the coverage enhanced configuration information, obtains the repetition number information in the coverage enhancement configuration information, determines the target repetition number, and determines that the same uplink data is repeatedly transmitted multiple times according to the target repetition number.
  • the base station determines the repetition number information according to the coverage enhancement requirement of the wireless broadband terminal device, and sends the coverage enhancement configuration information to the wireless broadband terminal device, where the coverage enhancement information includes the repetition number information, and the repetition number information is used to indicate The number of repetitions of the target, so that the wireless broadband terminal device performs uplink data transmission according to the coverage enhancement configuration information, and determines that the same uplink data is repeatedly transmitted multiple times according to the target repetition number, because the repetition number information included in the coverage enhancement configuration information is the base station according to the wireless broadband.
  • the enhanced coverage of the terminal equipment is determined. Therefore, the number of repetitions of the target used by the wireless broadband terminal device for uplink data transmission is more reasonable, and the coverage enhancement effect is improved.
  • FIG. 4 is a schematic flowchart of Embodiment 2 of an uplink data transmission method of a wireless broadband terminal device according to the present invention
  • FIG. 4 is a diagram, before the wireless broadband terminal device receives the coverage enhancement configuration information sent by the base station, according to the embodiment shown in FIG. Further includes:
  • S400 The wireless broadband terminal device receives pre-configuration information sent by the base station.
  • the pre-configuration information includes the repetition quantity set information.
  • the repetition quantity set information includes at least two repetition times.
  • the pre-configuration information sent by the wireless broadband terminal device to the base station includes, but is not limited to, the following implementation manners:
  • a possible implementation manner is: the base station sends a first system information block (SIB) to the wireless broadband terminal device, where the first SIB includes pre-configuration information.
  • SIB system information block
  • the wireless broadband terminal device receives the first SIB sent by the base station, and acquires pre-configuration information from the first SIB.
  • the first SIB is generally referred to as an SIB of a narrowband system.
  • it may be an SIB in an Enhanced Machine Type Communication (eMTC) system, and the capability of receiving the first SIB needs to be configured in advance for the wireless broadband terminal device.
  • eMTC Enhanced Machine Type Communication
  • the base station sends a second SIB to the wireless broadband terminal device, where the second SIB includes pre-configuration information.
  • the wireless broadband terminal device receives the second SIB sent by the base station, and acquires pre-configuration information from the second SIB.
  • the second SIB generally refers to an SIB of a broadband system, for example, may be an SIB in an LTE system.
  • the transmission locations of the first SIB and the second SIB are determined differently.
  • a further possible implementation manner is: the base station sends a broadcast message, and the broadcast message includes pre-configuration information.
  • the wireless broadband terminal device receives the broadcast message and obtains the pre-configuration information from the broadcast message.
  • the base station sends coverage enhancement indication information to the wireless broadband terminal device.
  • the coverage enhancement indication information is used to indicate that the wireless broadband terminal transmits the uplink data by using the coverage enhancement mode.
  • the triggering condition for the base station to send the coverage enhancement indication information to the wireless broadband terminal device including but not limited to the following two situations:
  • the wireless broadband terminal device determines whether the uplink data needs to be transmitted by using the coverage enhancement mode according to the measured reference signal receiving power (RSRP) of the serving cell, and if it is determined that the coverage enhancement mode is needed to be transmitted.
  • the uplink data is sent to the base station to send the coverage enhancement request information to request to transmit the uplink data by using the coverage enhancement mode.
  • the base station After receiving the coverage enhancement request information sent by the wireless broadband terminal device, the base station sends the coverage enhancement indication information to the wireless broadband terminal device, indicating the wireless
  • the subsequent uplink data transmission of the broadband terminal equipment adopts the coverage enhancement mode, that is, the same uplink data is repeatedly transmitted multiple times.
  • the wireless broadband terminal device may send radio resource control (Radio Resource Control, RRC for short) signaling to the base station, include coverage enhancement request information in the RRC signaling, and the base station sends the RRC signaling to the wireless broadband terminal device, where The coverage enhancement indication information is included in the RRC signaling.
  • RRC Radio Resource Control
  • the base station determines whether the wireless broadband terminal device needs to use the coverage enhancement mode to transmit uplink data according to the transmission performance of the uplink data sent by the wireless broadband terminal device, and if it is determined that the uplink data needs to be transmitted by using the coverage enhancement mode, the base station sends the coverage to the base station. Ensuring the request information to request to transmit the uplink data by using the coverage enhancement mode, and after receiving the coverage enhancement request information sent by the wireless broadband terminal device, the base station sends the coverage enhancement indication information to the wireless broadband terminal device, indicating that there is no The subsequent uplink data transmission of the line broadband terminal equipment adopts the coverage enhancement mode, that is, the same uplink data is repeatedly transmitted multiple times.
  • the wireless broadband terminal device may send the RRC signaling to the base station, and include the coverage enhancement request information in the RRC signaling, the base station sends the RRC signaling to the wireless broadband terminal device, and includes the coverage enhancement indication information in the RRC signaling.
  • the coverage enhancement configuration information further includes: hopping time interval information, where the pre-configuration information further includes the hopping time interval set.
  • the hopping time interval information is used to indicate the target hopping time interval, wherein the hopping time interval information is the target hopping time interval, or the hopping time interval information is the target hopping time interval in the hopping time interval set.
  • Index information the target hopping time interval is one hopping time interval in the hopping time interval set, and the hopping time interval set includes at least two hopping time intervals; the target hopping time interval is used to indicate consecutive N subframes Frequency hopping after uplink data transmission using the same frequency, the target hopping time interval is the number of N subframes, and N is an integer greater than or equal to 2.
  • the target hopping time interval is 4 subframes
  • 4 consecutive subframes use the same frequency for uplink data transmission, and the following consecutive 4 subframes hop to another frequency for uplink data transmission, and so on.
  • channel estimation across subframes can be implemented, thereby making channel estimation more accurate, thereby improving coverage enhancement.
  • Embodiment 1 is a schematic structural diagram of Embodiment 1 of an uplink data transmission device of a wireless broadband terminal device according to the present invention.
  • the device in this embodiment is deployed in a wireless broadband terminal device, and the device in this embodiment includes a receiver 501 and a transmitter 502.
  • the receiver 501 is configured to receive the coverage enhancement configuration information sent by the base station, where the coverage enhancement information includes the repetition number information, the repetition number information is used to indicate the target repetition number, and the target repetition number is a repetition number in the repetition number set, and the repetition number set Included in the at least two repetitions;
  • the transmitter 502 is configured to perform uplink data transmission according to the coverage enhancement configuration information;
  • the maximum channel bandwidth of the wireless broadband terminal device is greater than 1.4 MHz.
  • the number of repetitions is the number of target repetitions.
  • the receiver 501 is specifically configured to use the physical downlink control channel PDCCH. Or the user-specific search space of the physical downlink control channel EPDCCH is obtained to obtain downlink control information DCI, where the DCI includes coverage enhancement configuration information.
  • the receiver 501 is specifically configured to receive the coverage enhanced wireless network temporary identifier (CE-RNTI) sent by the base station, and obtain the downlink control information DCI according to the CE-RNTI, where the DCI includes coverage enhancement configuration information.
  • CE-RNTI coverage enhanced wireless network temporary identifier
  • the receiver 501 is specifically configured to receive the downlink control information DCI sent by the base station, where the DCI includes the coverage enhancement configuration information, and parse the DCI according to the preset rule to obtain the coverage enhancement configuration information.
  • the device in the foregoing embodiment corresponds to the steps related to the wireless broadband terminal device in the technical solution described in the first embodiment, and the implementation principle and technical effects are similar, and details are not described herein again.
  • the receiver 501 is further configured to receive the coverage enhancement indication information sent by the base station, where the coverage enhancement indication information is used to instruct the wireless broadband terminal to transmit the uplink data in the coverage enhancement manner.
  • the transmitter 502 is further configured to send coverage enhancement request information to the base station, where the coverage enhancement request information is used to request the wireless broadband terminal device to use the coverage enhancement mode to transmit uplink data.
  • the method further includes:
  • the processor 503 is configured to receive the power RSRP according to the measured reference signal of the serving cell, and determine that the wireless broadband terminal device needs to transmit the uplink data by using the coverage enhancement mode.
  • the receiver 501 is specifically configured to receive radio resource control RRC signaling sent by the base station, where the RRC signaling includes coverage enhancement indication information.
  • the receiver 501 is further configured to receive pre-configuration information sent by the base station, where the pre-configuration information includes the repetition quantity set information;
  • the repetition number information is index information of the target repetition number in the repetition number set.
  • the receiver 501 is specifically configured to receive the first system information block SIB; the first SIB includes pre-configuration information;
  • the receiver 501 is specifically configured to receive the second SIB, where the second SIB includes pre-configuration information;
  • the receiver 501 is specifically configured to receive a broadcast message, where the broadcast message includes pre-configuration information.
  • the manner in which the transmission locations of the first SIB and the second SIB are determined is different.
  • the first SIB enhances the SIB of the machine type communication eMTC.
  • the device in the foregoing embodiment corresponds to the steps related to the wireless broadband terminal device in the technical solution described in the second embodiment, and the implementation principle and technical effects are similar, and details are not described herein again.
  • the coverage enhancement configuration information further includes:
  • Frequency hopping time interval information is used to indicate the target hopping time interval, the frequency hopping time interval information is the target hopping time interval, or the hopping time interval information is the target hopping time interval at the hopping time interval
  • the index information in the set, the target hopping time interval is one hopping time interval in the hopping time interval set, and the hopping time interval set includes at least two hopping time intervals;
  • the target hopping time interval is used to indicate that the consecutive N subframes use the same frequency for uplink data transmission and then hop, the target hopping time interval is the number of N subframes, and N is an integer greater than or equal to 2.
  • the pre-configuration information further includes a set of frequency hopping time intervals.
  • the device in the foregoing embodiment corresponds to the steps related to the wireless broadband terminal device in the technical solution described in the third embodiment, and the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 6 is a schematic structural diagram of Embodiment 2 of an uplink data transmission apparatus of a wireless broadband terminal device of the present application.
  • the apparatus of this embodiment is deployed in a base station, where the apparatus includes a processor 601 and a transmitter 602, where the processor 601 is configured to The coverage enhancement requirement of the wireless broadband terminal device determines the repetition number information, the repetition number information is used to indicate the target repetition number, the target repetition number is one repetition number in the repetition number set, and the repetition quantity set includes at least two repetition times; the transmitter 602, configured to send coverage enhancement configuration information to the wireless broadband terminal device, where the coverage enhancement information includes the repetition number information;
  • the maximum channel bandwidth of the wireless broadband terminal device is greater than 1.4 MHz.
  • the transmitter 602 is specifically configured to send downlink control information DCI in the user-specific search space of the physical downlink control channel PDCCH or the enhanced physical downlink control channel EPDCCH, where the DCI includes coverage enhancement configuration information.
  • the transmitter 602 is specifically configured to send a coverage enhanced wireless network temporary identifier CE-RNTI to the wireless broadband terminal device, and perform scrambling on the DCI cyclic redundancy code CRC according to the CE-RNTI.
  • the DCI includes coverage enhancement configuration information; the DCI is sent to the wireless broadband terminal device.
  • the processor 601 is specifically configured to generate a DCI according to a preset rule, where the DCI includes coverage enhancement configuration information, and the transmitter 602 is specifically configured to send the DCI to the wireless broadband terminal device.
  • the number of repetitions is the number of target repetitions.
  • the device in the foregoing embodiment is applicable to the steps related to the base station in the technical solution described in the first embodiment, and the implementation principle and technical effects are similar, and details are not described herein again.
  • the transmitter 602 is further configured to send the coverage enhancement indication information to the wireless broadband terminal device, where the coverage enhancement indication information is used to instruct the wireless broadband terminal to transmit the uplink data in the coverage enhancement manner.
  • the method further includes: a receiver 603, configured to receive the coverage enhancement request information sent by the wireless broadband terminal device, where the coverage enhancement request information is used to request the wireless broadband terminal device to transmit the uplink data by using the coverage enhancement mode.
  • the processor 601 is further configured to determine, according to the transmission performance of the uplink data sent by the wireless broadband terminal device, that the wireless broadband terminal device needs to use the coverage enhancement manner to transmit the uplink data.
  • the transmitter 602 is specifically configured to send radio resource control RRC signaling to the wireless broadband terminal device, where the RRC signaling includes coverage enhancement indication information.
  • the transmitter 602 is further configured to send the pre-configuration information to the wireless broadband terminal device, where the pre-configuration information includes the repetition quantity set information; the repetition quantity information is the index information of the target repetition number in the repetition quantity set.
  • the transmitter 602 is specifically configured to send the first SIB to the wireless broadband terminal device, where the first SIB includes pre-configuration information;
  • the transmitter 602 is specifically configured to send a second SIB to the wireless broadband terminal device, where the second SIB includes pre-configuration information;
  • the transmitter 602 is specifically configured to send a broadcast message, where the broadcast message includes pre-configuration information;
  • the manner in which the transmission locations of the first SIB and the second SIB are determined is different.
  • the device in the foregoing embodiment is applicable to the steps related to the base station in the technical solution described in the second embodiment, and the implementation principle and technical effects are similar, and details are not described herein again.
  • the coverage enhancement configuration information further includes:
  • the frequency hopping time interval information is used to indicate the target hopping time interval, the hopping time interval information is the target hopping time interval, or the hopping time interval information is the index information of the target hopping time interval in the hopping time interval set.
  • the target hopping time interval is one hopping time interval in the hopping time interval set, and the hopping time interval set includes at least two hopping time intervals;
  • the target hopping time interval is used to indicate that the consecutive N subframes use the same frequency for uplink data transmission and then hop, the target hopping time interval is the number of N subframes, and N is an integer greater than or equal to 2.
  • the pre-configuration information further includes a set of frequency hopping time intervals.
  • the device in the foregoing embodiment is applicable to the steps related to the base station in the technical solution described in the third embodiment, and the implementation principle and technical effects are similar, and details are not described herein again.
  • 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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé et un appareil pour la transmission de données en liaison montante d'un dispositif terminal à bande large sans fil. En déterminant des informations concernant le nombre de répétitions au moyen d'une station de base selon une exigence d'amélioration de couverture d'un dispositif terminal à bande large sans fil, et en envoyant des informations de configuration d'amélioration de couverture au dispositif terminal à bande large sans fil, puisque les informations concernant le nombre de répétitions comprises dans les informations de configuration d'amélioration de couverture sont déterminées par la station de base selon les exigences d'amélioration de couverture du dispositif terminal à bande large sans fil, le nombre cible de répétitions utilisées par le dispositif terminal à bande large sans fil pour la transmission de données en liaison montante est plus rationnel, et l'effet de l'amélioration de la couverture est amélioré.
PCT/CN2016/095038 2016-08-12 2016-08-12 Procédé et appareil pour la transmission de données en liaison montante d'un dispositif terminal sans fil à large bande Ceased WO2018027985A1 (fr)

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PCT/CN2016/095038 WO2018027985A1 (fr) 2016-08-12 2016-08-12 Procédé et appareil pour la transmission de données en liaison montante d'un dispositif terminal sans fil à large bande
CN201680088286.0A CN109526248A (zh) 2016-08-12 2016-08-12 无线宽带终端设备的上行数据传输方法和装置

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PCT/CN2016/095038 WO2018027985A1 (fr) 2016-08-12 2016-08-12 Procédé et appareil pour la transmission de données en liaison montante d'un dispositif terminal sans fil à large bande

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