WO2018171427A1 - 数据发送方法、数据接收方法、用户设备和基站 - Google Patents

数据发送方法、数据接收方法、用户设备和基站 Download PDF

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Publication number
WO2018171427A1
WO2018171427A1 PCT/CN2018/078265 CN2018078265W WO2018171427A1 WO 2018171427 A1 WO2018171427 A1 WO 2018171427A1 CN 2018078265 W CN2018078265 W CN 2018078265W WO 2018171427 A1 WO2018171427 A1 WO 2018171427A1
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WIPO (PCT)
Prior art keywords
retransmissions
base station
uplink data
user equipment
signal
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PCT/CN2018/078265
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English (en)
French (fr)
Inventor
刘佳慧
牟勤
刘柳
蒋惠玲
陈岚
大久保尚人
Original Assignee
株式会社Ntt都科摩
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Application filed by 株式会社Ntt都科摩 filed Critical 株式会社Ntt都科摩
Priority to CN201880015325.3A priority Critical patent/CN110383734B/zh
Priority to US16/496,240 priority patent/US11128406B2/en
Publication of WO2018171427A1 publication Critical patent/WO2018171427A1/zh

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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
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1806—Go-back-N protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/189—Transmission or retransmission of more than one copy of a message
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • G—PHYSICS
    • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
    • G16Y30/00—IoT infrastructure
    • 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 invention relates to the field of mobile communications, and more particularly, to a data transmission method, a data receiving method, a user equipment, and a base station for implementing early acknowledgement of uplink data reception.
  • 5G fifth-generation mobile communication technology
  • eMBB enhanced mobile broadband
  • mMTC massive machine-like communication
  • URLLC ultra-reliable low-latency
  • the set of uplink data retransmission times can be defined as: ⁇ 1, 4, 8, 16, 32...2048 ⁇ .
  • RRC Radio Resource Control
  • the number of retransmissions for a particular User Equipment (UE) may be set to ⁇ 1, 4, 8, 16 ⁇ .
  • the retransmission number set can be defined as: ⁇ 1, 2, 3, 4,...32 ⁇ .
  • DCI downlink control information
  • CQI channel quality indication
  • an early acknowledgment scheme is proposed in which the user equipment 20 detects acknowledgment feedback (ACK) from the base station 10 while transmitting uplink data to the base station 10. For example, in the scenario shown in FIG.
  • the estimated number of retransmissions is 16 times, and after the user equipment 20 detects the acknowledgment feedback from the base station 10 after the 10th retransmission, the user equipment 20 stops resending thereafter. There is no need to perform the remaining 6 retransmissions.
  • the user equipment in the full-duplex mode in the URLLC scenario cannot be used to detect the acknowledgment feedback from the base station while transmitting data.
  • 2B shows that the user equipment in the half-duplex mode cannot simultaneously transmit and receive signals, so it is necessary to receive the acknowledgment feedback from the base station after performing the predetermined number of retransmissions. For example, for user equipment 20 1 in a good coverage state, it needs to perform 4 retransmissions, and for user equipment 20 2 in a good coverage state, it needs to perform 8 retransmissions before receiving HARQ feedback from the base station.
  • the user equipment 20 1 may have successfully transmitted without 4 retransmissions, and the user equipment 20 2 may have successfully transmitted without 8 retransmissions.
  • unnecessary retransmissions and lags in acknowledgment result in wasted power consumption.
  • the user equipment detects acknowledgment feedback from the base station after each retransmission, which would require extremely high power consumption.
  • the present invention provides a data transmitting method, a data receiving method, a user equipment, and a base station.
  • a data transmission method for a user equipment including: transmitting uplink data to the base station by an initial number of retransmissions; determining whether to receive an uplink from the base station within a predetermined interval.
  • An acknowledgment signal of link data wherein, when the acknowledgment signal is received within the predetermined interval, stopping transmitting the uplink data; and not receiving the acknowledgment signal within the predetermined interval.
  • the uplink data is sent to the base station in a subsequent retransmission mode until the acknowledgement signal is received from the base station, or the maximum number of retransmissions is reached.
  • a data receiving method for a base station comprising: receiving uplink data transmitted from the user equipment with an initial number of retransmissions; determining whether from the predetermined interval The user equipment correctly receives the uplink data, and sends an acknowledgment signal to the user equipment if it is determined that the uplink data is correctly received.
  • a user equipment including: a receiving unit, configured to receive a signal from a base station; and a sending unit, configured to send uplink data to the base station by an initial number of retransmissions; a transmission control unit, configured to determine, during a predetermined interval, whether an acknowledgment signal for receiving uplink data is received from the base station, wherein, in a case where the acknowledgment signal is received within the predetermined interval, the retransmission control unit controls The transmitting unit stops transmitting the uplink data; and if the acknowledgment signal is not received within the predetermined interval, the retransmission control unit controls the transmitting unit to perform the subsequent retransmission mode to the The base station transmits uplink data until the acknowledgement signal is received from the base station, or the maximum number of retransmissions is reached.
  • a base station including: a sending unit, configured to send a signal to a user equipment, and a receiving unit, configured to receive uplink data sent from the user equipment by an initial number of retransmissions. And a receiving control unit configured to determine whether the uplink data is correctly received from the user equipment within a predetermined interval, and in the case of determining that the uplink data is correctly received, the receiving control unit controls the The sending unit sends an acknowledgement signal to the user equipment.
  • a data transmitting method, a data receiving method, a user equipment, and a base station by inserting an interval for detecting HARQ feedback from a base station in a large number of uplink data retransmissions, without performing full pre-designation or In the case of the estimated maximum number of retransmissions, early confirmation of uplink data reception is implemented, thereby saving power consumption of user equipment, improving resource utilization efficiency, and improving scheduling flexibility.
  • FIG. 1 is a schematic diagram outlining a communication system in accordance with an embodiment of the present invention.
  • 2A and 2B are diagrams illustrating a process of confirming uplink data in the existing full-duplex and half-duplex modes
  • FIG. 3 is a first example flowchart illustrating a data transmitting method for a user equipment according to an embodiment of the present invention
  • FIG. 4 is a schematic diagram illustrating a first example of an early confirmation process of uplink data according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram illustrating a second example of an early confirmation process of uplink data according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram illustrating a configuration of a retransmission mode in a data transmitting method for a user equipment according to an embodiment of the present invention
  • FIG. 7 is a second exemplary flowchart illustrating a data transmitting method for a user equipment according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram illustrating a configuration of an initial number of retransmissions in a data transmission method for a user equipment according to an embodiment of the present invention
  • FIG. 9 is a schematic diagram illustrating a third example of an early confirmation process of uplink data according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram illustrating a configuration of a number of subsequent retransmissions in a data transmission method for a user equipment according to an embodiment of the present invention.
  • FIG. 11 is another schematic diagram illustrating a configuration of a retransmission mode in a data transmission method for a user equipment according to an embodiment of the present invention
  • 12A and 12B are diagrams illustrating a fourth example of an early confirmation process of uplink data according to an embodiment of the present invention.
  • FIG. 13 is a flowchart illustrating an example of a data receiving method for a base station according to an embodiment of the present invention
  • FIG. 14 is a block diagram illustrating a user equipment according to an embodiment of the present invention.
  • FIG. 15 is a block diagram illustrating a base station according to an embodiment of the present invention.
  • FIG. 16 is a block diagram illustrating an example of a hardware configuration of a base station and a user equipment according to an embodiment of the present invention.
  • a communication system includes a base station (eNB) 10 and a user equipment (UE) 20.
  • the base station 10 and the user equipment 20 perform transmission and reception of communication signals based on a predetermined protocol on a predetermined communication channel.
  • the present invention can be applied to a 5G-based IoT application scenario.
  • a first example of a data transmitting method for a user equipment according to an embodiment of the present invention will be described with reference to FIGS. 3 through 6.
  • fixed retransmission transmission is performed in a predetermined interval mode by using different retransmission granularities.
  • FIG. 3 is a first example flowchart illustrating a data transmitting method for a user equipment according to an embodiment of the present invention. As shown in FIG. 3, a first example of a data transmitting method for a user equipment according to an embodiment of the present invention includes the following steps.
  • step S301 uplink data is transmitted to the base station with the initial number of retransmissions.
  • the maximum number of retransmissions includes, but is not limited to, the following two determination manners.
  • the uplink grant signal (UL grant) is first received from the base station, where the base station indicates the maximum weight of the uplink data to the user equipment in the uplink grant signal. Number of times.
  • the user equipment may send uplink data to the base station without receiving an uplink grant signal, and the user equipment determines the maximum weight based on a measurement result of communication with the base station. Number of times. For example, the user equipment determines the maximum number of retransmissions based on reference signal received power (RSRP) and/or reference signal received quality (RSRQ) communicated with the current base station. That is, the worse the communication coverage is indicated by RSRP/RSRQ, the greater the determined maximum number of retransmissions, and vice versa. In addition, it is desirable that the maximum number of retransmissions may be the number of times in the set of retransmission times ⁇ 1, 4, 8, 16, 32...2048 ⁇ .
  • RSRP reference signal received power
  • RSRQ reference signal received quality
  • step S302 it is determined whether or not an acknowledgment signal for receiving uplink data from the base station is determined within a predetermined interval.
  • parameters related to the predetermined interval need to be defined in advance.
  • the length of the predetermined interval corresponds to a channel switching and a signal decoding time (for example, 3 ms) required for the user equipment to switch to a signal receiving channel and decode a signal transmitted from the base station, so that the base station has sufficient time Switching to a signal corresponding to the user equipment, decoding uplink data transmitted from the user equipment, and determining whether to correctly receive according to the decoding result of the uplink data, and transmitting corresponding HARQ feedback, ie, an acknowledgement signal (ACK), to the user equipment Or no acknowledgement (NACK).
  • ACK acknowledgement signal
  • NACK no acknowledgement
  • step S302 If an affirmative result is obtained in step S302, that is, the confirmation signal is received within the predetermined interval, the processing proceeds to step S303.
  • step S303 the user equipment stops transmitting the uplink data.
  • step S302 if a negative result is obtained in step S302, that the acknowledgment signal is not received within the predetermined interval (including not receiving the acknowledgment signal (ACK) or conversely receiving the unacknowledgment signal (NACK) )), the processing proceeds to step S304.
  • step S304 the user equipment sends uplink data to the base station in a subsequent retransmission mode until the acknowledgement signal is received from the base station, or the maximum number of retransmissions is reached.
  • transmitting uplink data to the base station in a subsequent retransmission mode includes: repeatedly transmitting uplink data to the base station by using a plurality of subsequent retransmission times, wherein each of the multiple subsequent weights is One of the number of retransmissions, after transmitting uplink data to the base station, determining whether to receive an acknowledgment signal of uplink data from the base station within the predetermined interval, and finally receiving the eNB from the base station When the acknowledgment signal or the maximum number of retransmissions is reached, the transmission of the uplink data is ended.
  • a predetermined interval is inserted to wait for judging whether or not The acknowledgment signal of the uplink data is received from the base station, so that in the case of receiving the acknowledgment signal, the retransmission of the uplink data may be stopped in advance, thereby avoiding power consumption and waste of resources caused by unnecessary retransmission.
  • FIG. 4 and 5 are respectively schematic diagrams illustrating first and second examples of an early confirmation process of uplink data according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram illustrating a configuration of a retransmission mode in a data transmitting method for a user equipment according to an embodiment of the present invention.
  • the user equipment 20 starts transmission of uplink data after receiving the uplink grant signal from the base station 10.
  • the present invention is not limited thereto, and the user equipment 20 can perform transmission of uplink data without receiving an uplink grant signal.
  • the maximum number of retransmissions of the uplink data is indicated to the user equipment in the uplink grant signal, or the user equipment determines the maximum number of retransmissions based on the measurement result of the communication with the base station.
  • the maximum number of retransmissions may be the number of times in the set of retransmission times ⁇ 1, 4, 8, 16, 32...2048 ⁇ , such as 1, 4, 8, 16, 32 shown in FIG. .
  • the user equipment 20 transmits uplink data to the base station eight times as the initial number of retransmissions.
  • the initial number of retransmissions and the maximum number of retransmissions satisfy the following relationship: in a case where the maximum number of retransmissions is less than or equal to a predetermined threshold, the number of initial retransmissions is equal to the maximum number of retransmissions, and at the maximum In the case where the number of retransmissions is greater than a predetermined threshold, the number of initial retransmissions is a predetermined ratio of the maximum number of retransmissions. As shown in FIG.
  • the predetermined threshold is, for example, 4, and in the case where the maximum number of retransmissions (1 and 4) is less than or equal to a predetermined threshold (4), the initial number of retransmissions is equal to the maximum number of retransmissions, that is, Set to 1 or 4. In a case where the maximum number of retransmissions (8, 16, 32) is greater than a predetermined threshold (4), the initial number of retransmissions (4, 8, 16) is a predetermined ratio of the maximum number of retransmissions (for example, 1/2).
  • FIGS. 4 and 5 after the initial number of retransmissions is performed, it is judged whether or not the acknowledgment signal of the uplink data is received from the base station within a predetermined interval.
  • Figure 4 shows that the acknowledgment signal is not received
  • Figure 5 shows that the acknowledgment signal was not received but an unacknowledged signal was received.
  • the user equipment continues to transmit uplink data to the base station in a subsequent retransmission mode until as shown in FIG. 4 and FIG.
  • the acknowledgment signal is received within the second predetermined interval, thereby ending the uplink data transmission earlier than the 16 times of the maximum number of retransmissions shown in the second row of FIGS. 4 and 5.
  • each of the multiple subsequent retransmission times in the subsequent retransmission mode and the initial retransmission times satisfy the following relationship: each of the multiple subsequent retransmission times is a first retransmission equal to the initial retransmission times The number of times mode, or each of the plurality of subsequent retransmission times is greater than or less than the second number of retransmissions of the initial number of retransmissions. As shown in FIG. 6, in the case that the maximum number of retransmissions is greater than a predetermined threshold, that is, in the case where there are a plurality of subsequent retransmission times, the plurality of subsequent retransmission times have an equal configuration of the configuration 1 and the descending structure. Configuration 2.
  • each of the initial number of retransmissions and the plurality of subsequent retransmissions are equally configured as (4, 4), (4, 4, 4, 4) and (4, 4, 4) , 4, 4, 4, 4, 4); in the configuration 2 of the descending structure, each of the initial number of retransmissions and the number of the plurality of subsequent retransmissions is configured to be (8, 4, 4) and (16) , 8, 8).
  • the user equipment may switch between the first retransmission number mode and the second retransmission number mode based on an indication from the base station. For example, a flag bit is added in, for example, downlink control information (DCI) for instructing the user equipment to perform switching between the first retransmission number mode and the second retransmission number mode.
  • DCI downlink control information
  • the length of the predetermined interval, the starting point, the time/frequency resource required for transmission, the number of initial retransmissions, and the number of the plurality of subsequent retransmissions may be at the base station A System Information Block (SIB) or indication in the Radio Resource Control Signaling (RRC) specific to the user equipment.
  • SIB System Information Block
  • RRC Radio Resource Control Signaling
  • the above parameter information may be predefined in accordance with all of the maximum number of retransmissions possible (e.g., the number of times in the set of retransmissions ⁇ 1, 4, 8, 16, 32...2048 ⁇ ).
  • a second example of a data transmitting method for a user equipment according to an embodiment of the present invention will be described with reference to FIGS. 7 through 12B.
  • a more flexible retransmission transmission is realized by indicating the number of retransmissions in the feedback received in the interval.
  • FIG. 7 is a second example flowchart illustrating a data transmitting method for a user equipment according to an embodiment of the present invention. As shown in FIG. 7, a second example of a data transmitting method for a user equipment according to an embodiment of the present invention includes the following steps.
  • step S701 uplink data is transmitted to the base station with the initial number of retransmissions.
  • Step S701 shown in FIG. 7 is the same as step S301 described with reference to FIG. 3, in which the number of maximum retransmissions and the number of initial retransmissions are also determined in the same manner, and a repetitive description thereof will be omitted herein.
  • the length of the predetermined interval thereafter, the starting point, the time/frequency resource required for transmission, the initial The manner of specifying and indicating the parameters such as the number of retransmissions and the number of the plurality of subsequent retransmissions is also the same as the first example of the data transmission method for the user equipment according to the embodiment of the present invention, and a repetitive description thereof will be omitted herein.
  • step S702 it is determined whether or not an acknowledgment signal for receiving uplink data from the base station is determined within a predetermined interval. If an affirmative result is obtained in step S702, that is, the confirmation signal is received within the predetermined interval, the processing proceeds to step S703. In step S703, the user equipment stops transmitting the uplink data.
  • step S702 if a negative result is obtained in step S702, and it is confirmed that the unacknowledgment signal (NACK) is received, the processing proceeds to step S704.
  • NACK unacknowledgment signal
  • a subsequent retransmission mode indicated by the non-acknowledgment signal is determined.
  • 2 bits may be added in the HARQ feedback (NACK) to indicate a subsequent retransmission mode.
  • the subsequent retransmission mode may be determined by the base station based on information of the received uplink data (e.g., Signal to Interference plus Noise Ratio (SINR)).
  • SINR Signal to Interference plus Noise Ratio
  • step S705 uplink data is sent to the base station in the subsequent retransmission mode indicated by the unacknowledgment signal until the acknowledgement signal is received from the base station, or the maximum number of retransmissions is reached.
  • transmitting the uplink data to the base station in the subsequent retransmission mode indicated by the unacknowledged signal comprises: repeating, sending uplink data to the base station by using a plurality of subsequent retransmission times, where each After transmitting the uplink data to the base station by one of the plurality of subsequent retransmission times, determining whether to receive an acknowledgment signal of the uplink data from the base station within the predetermined interval, if Receiving the non-acknowledgement signal, continuing to transmit uplink data to the base station with the next number of retransmissions indicated by the unacknowledgment signal, and finally receiving the acknowledgement signal or maximizing retransmission from the base station. In the case of the number of times, the transmission of the uplink data is ended.
  • a predetermined interval is inserted to wait for judging whether or not Receiving an acknowledgment signal of the uplink data from the base station, so that it is possible to stop the retransmission of the uplink data in advance if the acknowledgment signal is received, and not to confirm the acknowledgment when the acknowledgment signal is received.
  • the number of subsequent retransmissions indicated by the signal continues the retransmission of the uplink data, thereby avoiding power consumption and waste of resources caused by unnecessary retransmissions.
  • FIG. 8 is a schematic diagram illustrating a configuration of an initial number of retransmissions in a data transmission method for a user equipment according to an embodiment of the present invention
  • FIG. 9 is a diagram illustrating an early confirmation procedure of uplink data according to an embodiment of the present invention
  • FIG. 10 is a schematic diagram illustrating a configuration of a number of subsequent retransmissions in a data transmission method for a user equipment according to an embodiment of the present invention.
  • the configuration of the initial number of retransmissions shown in FIG. 8 is substantially the same as the configuration of the initial number of retransmissions in the configuration of the retransmission mode in the data transmission method for the user equipment illustrated in FIG.
  • the maximum number of retransmissions N is less than or equal to the predetermined threshold 4
  • the maximum number of retransmissions N is directly used as the initial number of retransmissions.
  • 1/2 of N of the maximum number of retransmissions is used as the initial number of retransmissions.
  • the user equipment 20 starts transmission of uplink data after receiving the uplink grant signal from the base station 10.
  • the present invention is not limited thereto, and the user equipment 20 can perform transmission of uplink data without receiving an uplink grant signal.
  • the configuration of the initial number of retransmissions follows the configuration shown in FIG. 8, and in the case where the maximum number of retransmissions is 16, the number of initial retransmissions is eight.
  • an unacknowledged signal (NACK) of uplink data is received from the base station within a predetermined interval.
  • the unacknowledged signal is configured with an additional 2 bit flag to indicate the subsequent retransmission mode.
  • FIG. 10 shows an example of a subsequent retransmission mode indicated by a 2-bit flag in a non-acknowledgement signal (NACK).
  • NACK non-acknowledgement signal
  • the subsequent retransmission mode is set to 2, that is, the number of subsequent retransmissions is N/n; in the case where the 2-bit identification bit takes the value of "10", the subsequent retransmission mode is indicated as configuration 3, that is, subsequent weight The number of times of sending is N/2 (n) ; when the value of the 2-bit flag is "11", the subsequent retransmission mode is indicated as configuration 4, that is, the number of subsequent retransmissions is Nlog 2 (n+1/n). It is easily understood that the subsequent retransmission mode configuration illustrated in FIG. 10 is exemplary, and the present invention is not limited thereto.
  • the number of subsequent retransmissions is indicated by the non-acknowledgement signal (NACK) to be 4 times, and the user equipment continues to send uplink data to the base station with the number of subsequent retransmissions of the flexible indication until the figure is as shown in FIG.
  • the acknowledgment signal is received within the second predetermined interval as indicated by 9 to end the uplink data transmission earlier than the maximum number of 16 retransmissions shown in the second row of FIG.
  • FIG. 11 is another schematic diagram illustrating a configuration of a retransmission mode in a data transmission method for a user equipment according to an embodiment of the present invention
  • FIGS. 12A and 12B are diagrams illustrating early confirmation of uplink data according to an embodiment of the present invention.
  • the user equipment may select, according to the maximum number of retransmissions, the number of retransmissions of the maximum retransmission times or the maximum number of retransmissions estimated by the user as the initial retransmission times and subsequent weights. Number of times. Specifically, on the premise that the set of retransmission times is ⁇ 1, 4, 8, 16, 32...2048 ⁇ , the number of retransmissions estimated for the user equipment is 8-16 times, and the maximum number of retransmissions indicated by the uplink grant signal is In the case of 16 times, the number 8 of the previous retransmissions of the maximum number of retransmissions 16 is selected as the number of initial retransmissions and the number of subsequent retransmissions.
  • 12A and 12B show an early confirmation process in the configuration mode shown in Fig. 11 using the number of initial retransmissions and the number of subsequent retransmissions.
  • the number of retransmissions 8 of the upper level of 16 is selected as the initial number of retransmissions. After the initial retransmission 8 times, an acknowledgment signal (ACK) transmitted from the base station is received in a predetermined interval, and transmission is stopped.
  • ACK acknowledgment signal
  • the number of retransmissions 8 of the upper level of 16 is selected as the initial number of retransmissions. After the initial retransmission 8 times, if an acknowledgment signal (ACK) transmitted from the base station is not received or a non-acknowledgement signal (NACK) is received in the predetermined interval, the number 8 of the previous retransmissions of the selection 16 is continued as the subsequent The number of retransmissions is stopped after receiving an acknowledgment signal (ACK) transmitted from the base station after performing 8 subsequent retransmissions.
  • ACK acknowledgment signal
  • NACK non-acknowledgement signal
  • FIG. 13 is a flowchart illustrating an example of a data receiving method for a base station according to an embodiment of the present invention. As shown in FIG. 13, a data receiving method for a base station according to an embodiment of the present invention includes the following steps.
  • step S1301 uplink data transmitted from the user equipment with an initial number of retransmissions is received.
  • the user equipment may start to send uplink data by the initial number of retransmissions after receiving the uplink grant signal (UL grant) from the base station.
  • the user equipment can transmit uplink data to the base station without receiving an uplink grant signal.
  • the base station may indicate to the user equipment the maximum number of retransmissions of the uplink data in the uplink grant signal.
  • the user equipment determines the maximum number of retransmissions based on a measurement of communication with the base station.
  • the number of initial retransmissions may adopt the configuration described with reference to FIGS. 6 and 8, and a repetitive description thereof will be omitted herein.
  • step S1302 it is determined whether the uplink data is correctly received from the user equipment within a predetermined interval.
  • the relevant parameter configuration of the predetermined interval may adopt a manner as described above, that is, the length of the predetermined interval corresponds to a channel switching and a signal decoding time required for the user equipment to switch to a signal receiving channel and decode a signal transmitted from the base station ( For example, 3ms), such that the base station has enough time to switch to the signal corresponding to the user equipment, decode the uplink data transmitted from the user equipment, and determine whether to correctly receive according to the decoding result of the uplink data, and to the user equipment.
  • the corresponding HARQ feedback ie, an acknowledgment signal (ACK) or a non-acknowledgement signal (NACK)
  • ACK acknowledgment signal
  • NACK non-acknowledgement signal
  • SIB System Information Block
  • RRC Control Signaling
  • the above parameter information may be predefined in accordance with all of the maximum number of retransmissions possible (e.g., the number of times in the set of retransmissions ⁇ 1, 4, 8, 16, 32...2048 ⁇ ).
  • step S1302 If an affirmative result is obtained in step S1302, that is, the uplink data is correctly received from the user equipment, the processing proceeds to step S1303. In step S1303, an acknowledgment signal is sent to the user equipment.
  • step S1304 receiving uplink data is transmitted from the user equipment in a subsequent retransmission mode until it is determined that the uplink data is correctly received, or the maximum number of retransmissions is reached.
  • the base station can transmit a no-acknowledgement signal to the user equipment.
  • the base station may generate the acknowledgement signal and the unacknowledged signal based on the received information of the uplink data, and the unacknowledged signal can be used to indicate subsequent retransmission of the user equipment. mode.
  • the configuration manners described with reference to FIGS. 6, 10, and 11 may be employed, and a repetitive description thereof will be omitted herein.
  • FIG. 14 is a block diagram illustrating a user equipment according to an embodiment of the present invention.
  • the user equipment 20 according to an embodiment of the present invention includes a receiving unit 201, a transmitting unit 202, and a retransmission control unit 203.
  • the receiving unit 201 is configured to receive a signal from the base station 10.
  • the transmitting unit 202 is configured to send uplink data to the base station 10 with an initial number of retransmissions.
  • the retransmission control unit 203 is configured to determine whether to receive an acknowledgment signal of the uplink data from the base station 10 within a predetermined interval. Wherein, in the case that the acknowledgement signal is received within the predetermined interval, the retransmission control unit 203 controls the transmitting unit 202 to stop transmitting the uplink data; and does not receive within the predetermined interval.
  • the retransmission control unit 203 controls the transmitting unit 202 to transmit uplink data to the base station 10 in a subsequent retransmission mode until the acknowledgment signal is received from the base station 10, Or reach the maximum number of retransmissions.
  • the retransmission control unit 203 is further configured to determine the maximum number of retransmissions of the uplink data before transmitting the uplink data to the base station 10 by the initial number of retransmissions.
  • the uplink grant signal received from the base station 10 via the receiving unit 201 indicates to the user equipment 20 the maximum number of retransmissions of uplink data.
  • the maximum number of retransmissions is determined based on a measurement result of communication between the user equipment 20 and the base station 1010.
  • the retransmission control unit 203 controls the transmitting unit 201 to repeatedly transmit an uplink to the base station 10 by a plurality of subsequent retransmission times. data. Each time after transmitting uplink data to the base station 10 with one of the plurality of subsequent retransmission times, the retransmission control unit 203 determines whether the base station 10 is from the base station 10 within the predetermined interval. An acknowledgment signal for receiving uplink data.
  • the retransmission control unit 203 controls the transmitting unit 201 to transmit uplink data to the base station 10 in a subsequent retransmission mode until The base station 10 receives the acknowledgement signal or reaches the maximum number of retransmissions.
  • the retransmission control unit 203 determines the subsequent retransmission mode indicated by the unacknowledgment signal, and controls the transmitting unit 201 to The subsequent retransmission mode indicated by the acknowledgment signal transmits uplink data to the base station 10 until the acknowledgment signal is received from the base station 10 or the maximum number of retransmissions is reached.
  • the retransmission control unit 203 may select, according to the maximum number of retransmissions, the number of retransmissions of the upper retransmission of the maximum number of retransmissions as the number of initial retransmissions and the number of subsequent retransmissions.
  • the receiving unit 201 receives the acknowledgement signal and the unacknowledged signal on the same channel as the uplink grant signal or in the following control information format or in a predetermined physical channel.
  • the configuration of the maximum number of retransmissions, the number of initial retransmissions, the subsequent retransmission mode, and the predetermined interval may adopt the configuration described above, and a repeated description thereof will be omitted herein.
  • FIG. 15 is a block diagram illustrating a base station according to an embodiment of the present invention.
  • a base station 10 according to an embodiment of the present invention includes a transmitting unit 101, a receiving unit 102, and a receiving control unit 103.
  • the transmitting unit 101 is configured to send a signal to the user equipment 20.
  • the receiving unit 102 is configured to receive uplink data transmitted from the user equipment 20 with an initial number of retransmissions.
  • the receiving control unit 103 is configured to determine whether the uplink data is correctly received from the user equipment 20 within a predetermined interval, and in the case of determining that the uplink data is correctly received, the receiving control unit 103 controls the The transmitting unit 101 transmits an acknowledgement signal to the user equipment 20.
  • the maximum number of retransmissions of the uplink data is determined.
  • the base station 10 can transmit the uplink grant signal to the user equipment 20 through the sending unit 101 to indicate the maximum number of retransmissions of the uplink data.
  • the user equipment 20 determines the maximum number of retransmissions based on the measurement result of communication with the base station 10.
  • the reception control unit 103 controls the transmission unit 101 to transmit a non-confirmation signal to the user equipment 20.
  • the receiving control unit 103 generates the acknowledgement signal and the unacknowledged signal based on the received information of the uplink data, and the unacknowledged signal can be used to indicate the subsequent weight of the user equipment. Hair mode.
  • the receiving unit 103 receives uplink data transmitted from the user equipment 20 in a subsequent retransmission mode until the reception control unit 103 determines that it is correct Receiving the uplink data or reaching the maximum number of retransmissions.
  • the length of the predetermined interval corresponds to a channel switching and a signal decoding time required for the base station 10 to receive uplink data
  • the sending unit 103 controls the radio resource via the system information block or the user equipment 20 Signaling indicating a length of the predetermined interval, the number of initial retransmissions, and the number of the plurality of subsequent retransmissions, or predetermining a length of the predetermined interval, the number of initial retransmissions, and the maximum number of retransmissions The number of the plurality of subsequent retransmissions.
  • the configuration of the maximum number of retransmissions, the number of initial retransmissions, the subsequent retransmission mode, and the predetermined interval may adopt the configuration described above, and a repeated description thereof will be omitted herein.
  • each functional block may be implemented by one device that is physically and/or logically combined, or two or more devices that are physically and/or logically separated, directly and/or indirectly (eg, This is achieved by a plurality of devices as described above by a wired and/or wireless connection.
  • the base station, user equipment, and the like in the embodiments of the present invention can function as a computer that performs processing of the wireless communication method of the present invention.
  • FIG. 16 is a block diagram illustrating an example of a hardware configuration of a base station and a user equipment according to an embodiment of the present invention.
  • the base station 10 and the user equipment 20 described above may be configured as a computer device that physically includes the processor 1001, the memory 1002, the memory 1003, the communication device 1004, the input device 1005, the output device 1006, the bus 1007, and the like.
  • the hardware structure of the base station 10 and the user equipment 20 may include one or more of the devices shown in the figures, or may not include some of the devices.
  • the processor 1001 only illustrates one, but may be multiple processors.
  • the processing may be performed by one processor, or may be performed by one or more processors simultaneously, sequentially, or by other methods.
  • the processor 1001 can be installed by more than one chip.
  • Each function in the base station 10 and the user equipment 20 is realized, for example, by reading a predetermined software (program) into hardware such as the processor 1001 and the memory 1002, thereby causing the processor 1001 to perform an operation, and the communication device 1004 The communication performed is controlled, and the reading and/or writing of data in the memory 1002 and the memory 1003 is controlled.
  • a predetermined software program
  • the communication device 1004 The communication performed is controlled, and the reading and/or writing of data in the memory 1002 and the memory 1003 is controlled.
  • the processor 1001 causes the operating system to operate to control the entire computer.
  • the processor 1001 may be configured by a central processing unit (CPU) including an interface with a peripheral device, a control device, an arithmetic device, a register, and the like.
  • CPU central processing unit
  • the above-described reception control unit 103, retransmission control unit 203, and the like can be implemented by the processor 1001.
  • the processor 1001 reads out programs (program codes), software modules, data, and the like from the memory 1003 and/or the communication device 1004 to the memory 1002, and executes various processes in accordance therewith.
  • programs program codes
  • the program a program for causing a computer to execute at least a part of the operations described in the above embodiments can be employed.
  • the retransmission control unit 203 of the user equipment 20 can be implemented by a control program stored in the memory 1002 and operated by the processor 1001, and can be similarly implemented for other functional blocks.
  • the memory 1002 is a computer readable recording medium, and may be, for example, a read only memory (ROM), an EEPROM (Erasable Programmable ROM), an electrically programmable read only memory (EEPROM), or an electrically programmable read only memory (EEPROM). At least one of a random access memory (RAM) and other suitable storage medium is used.
  • the memory 1002 may also be referred to as a register, a cache, a main memory (main storage device), or the like.
  • the memory 1002 can store an executable program (program code), a software module, and the like for implementing the wireless communication method according to the embodiment of the present invention.
  • the memory 1003 is a computer readable recording medium, and may be, for example, a flexible disk, a soft (registered trademark) disk (floppy disk), a magneto-optical disk (for example, a CD-ROM (Compact Disc ROM), etc.). Digital Versatile Disc, Blu-ray (registered trademark) disc, removable disk, hard drive, smart card, flash device (eg card, stick, key driver), magnetic stripe, database At least one of a server, a server, and other suitable storage medium.
  • the memory 1003 may also be referred to as an auxiliary storage device.
  • the communication device 1004 is hardware (transmission and reception device) for performing communication between computers through a wired and/or wireless network, and is also referred to as a network device, a network controller, a network card, a communication module, and the like, for example.
  • the communication device 1004 may include a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc., in order to implement, for example, Frequency Division Duplex (FDD) and/or Time Division Duplex (TDD).
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • the above-described transmitting unit 101, receiving unit 102, receiving unit 201, transmitting unit 202, and the like can be implemented by the communication device 1004.
  • the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside.
  • the output device 1006 is an output device (for example, a display, a speaker, a light emitting diode (LED) lamp, etc.) that performs an output to the outside.
  • the input device 1005 and the output device 1006 may also be an integrated structure (for example, a touch panel).
  • each device such as the processor 1001 and the memory 1002 is connected via a bus 1007 for communicating information.
  • the bus 1007 may be composed of a single bus or a different bus between devices.
  • the base station 10 and the user equipment 20 may include a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD, Programmable Logic Device), Hardware such as Field Programmable Gate Array (FPGA) can realize some or all of each functional block by this hardware.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • PLD programmable logic device
  • FPGA Field Programmable Gate Array
  • the processor 1001 can be installed by at least one of these hardwares.
  • the data transmission method, the data reception method, the user equipment, and the base station according to the embodiment of the present invention are described above with reference to FIG. 1 to FIG. 16 by inserting HARQ feedback for detecting the base station from the large number of uplink data retransmissions. Interval, enabling early confirmation of uplink data reception without fully performing pre-specified or estimated maximum number of retransmissions, thereby saving power consumption of user equipment, improving resource utilization efficiency, and improving scheduling flexibility.
  • the channel and/or symbol can also be a signal (signaling).
  • the signal can also be a message.
  • the reference signal may also be simply referred to as an RS (Reference Signal), and may also be referred to as a pilot (Pilot), a pilot signal, or the like according to applicable standards.
  • a component carrier may also be referred to as a cell, a frequency carrier, a carrier frequency, or the like.
  • the information, parameters, and the like described in the present specification may be expressed by absolute values, may be represented by relative values with predetermined values, or may be represented by other corresponding information.
  • wireless resources can be indicated by a specified index.
  • the formula or the like using these parameters may be different from those explicitly disclosed in the present specification.
  • the information, signals, and the like described in this specification can be expressed using any of a variety of different techniques.
  • data, commands, instructions, information, signals, bits, symbols, chips, etc. which may be mentioned in all of the above description, may pass voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of them. Combined to represent.
  • information, signals, and the like may be output from the upper layer to the lower layer, and/or from the lower layer to the upper layer.
  • Information, signals, etc. can be input or output via a plurality of network nodes.
  • Information or signals input or output can be stored in a specific place (such as memory) or managed by a management table. Information or signals input or output may be overwritten, updated or supplemented. The output information, signals, etc. can be deleted. The input information, signals, etc. can be sent to other devices.
  • the notification of the information is not limited to the mode/embodiment described in the specification, and may be performed by other methods.
  • the notification of the information may be through physical layer signaling (for example, Downlink Control Information (DCI), Uplink Control Information (UCI), and upper layer signaling (for example, radio resource control).
  • DCI Downlink Control Information
  • UCI Uplink Control Information
  • RRC Radio Resource Control
  • MIB Master Information Block
  • SIB System Information Block
  • MAC Media Access Control
  • the physical layer signaling may be referred to as L1/L2 (Layer 1/Layer 2) control information (L1/L2 control signal), L1 control information (L1 control signal), and the like.
  • the RRC signaling may also be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.
  • the MAC signaling can be notified, for example, by a MAC Control Unit (MAC CE).
  • MAC CE MAC Control Unit
  • the notification of the predetermined information (for example, the notification of "ACK” or “NACK”) is not limited to being explicitly performed, and may be implicitly (for example, by not notifying the predetermined information or by notifying other information) )get on.
  • the determination can be performed by a value (0 or 1) represented by 1 bit, or by a true or false value (boolean value) represented by true (true) or false (false), and can also be compared by numerical values ( For example, comparison with a predetermined value).
  • Software whether referred to as software, firmware, middleware, microcode, hardware description language, or other names, should be interpreted broadly to mean commands, command sets, code, code segments, program code, programs, sub- Programs, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, steps, functions, and the like.
  • software, commands, information, and the like may be transmitted or received via a transmission medium.
  • a transmission medium For example, when using wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) from a website, server, or other remote source
  • wired technology coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.
  • wireless technology infrared, microwave, etc.
  • base station (BS, Base Station)", “radio base station”, “eNB”, “gNB”, “cell”, “sector”, “cell group”, “carrier”, and “component carrier”
  • BS Base Station
  • radio base station eNB
  • gNB gNodeB
  • cell a cell
  • cell group a carrier
  • component carrier a component carrier
  • the base station is sometimes referred to by a fixed station, a NodeB, an eNodeB (eNB), an access point, a transmission point, a reception point, a femto cell, a small cell, and the like.
  • a base station can accommodate one or more (eg, three) cells (also referred to as sectors). When the base station accommodates multiple cells, the entire coverage area of the base station can be divided into a plurality of smaller areas, and each smaller area can also pass through the base station subsystem (for example, a small indoor base station (RFH, remote head (RRH), Remote Radio Head))) to provide communication services.
  • the term "cell” or “sector” refers to a portion or the entirety of the coverage area of a base station and/or base station subsystem that performs communication services in the coverage.
  • the base station is sometimes referred to by a fixed station, a NodeB, an eNodeB (eNB), an access point, a transmission point, a reception point, a femto cell, a small cell, and the like.
  • eNB eNodeB
  • Mobile stations are also sometimes used by those skilled in the art as subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless Terminals, remote terminals, handsets, user agents, mobile clients, clients, or several other appropriate terms are used.
  • the wireless base station in this specification can also be replaced with a user terminal.
  • each mode/embodiment of the present invention can be applied to a configuration in which communication between a radio base station and a user terminal is replaced with communication between a plurality of user-to-device (D2D) devices.
  • D2D user-to-device
  • the function of the above-described wireless base station 10 can be regarded as a function of the user terminal 20.
  • words such as "upstream” and "downstream” can also be replaced with "side”.
  • the uplink channel can also be replaced with a side channel.
  • the user terminal in this specification can also be replaced with a wireless base station.
  • the function of the user terminal 20 described above can be regarded as a function of the wireless base station 10.
  • the node may be considered, for example, but not limited to, a Mobility Management Entity (MME), a Serving-Gateway (S-GW, etc.), or a combination thereof.
  • MME Mobility Management Entity
  • S-GW Serving-Gateway
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • LTE-B Long-Term Evolution
  • LTE-Beyond Long-Term Evolution
  • Super 3rd generation mobile communication system SUPER 3G
  • IMT-Advanced advanced international mobile communication
  • 4th generation mobile communication system (4G, 4th generation mobile communication system
  • 5G 5th generation mobile communication system
  • future radio access FAA
  • new radio access technology New-RAT, Radio Access Technology
  • NR New Radio Access Technology
  • NX new radio access
  • FX Next Generation Wireless Access
  • GSM Registered trademark
  • GSM Global System for Mobile Communications
  • CDMA2000 Code Division Multiple Access 2000
  • UMB Ultra Mobile Broadband
  • IEEE 802.11 Wi-Fi (registered trademark)
  • IEEE 802.16 WiMAX (registered trademark)
  • IEEE 802.20 Ultra Wideband
  • any reference to a unit using the names "first”, “second”, etc., as used in this specification, does not fully limit the number or order of the units. These names can be used in this specification as a convenient method of distinguishing between two or more units. Thus, reference to a first element and a second element does not mean that only two elements may be employed or that the first element must prevail in the form of the second unit.
  • determination used in the present specification sometimes includes various actions. For example, regarding “judgment (determination)", calculation, calculation, processing, deriving, investigating, looking up (eg, table, database, or other) may be performed. Search in the data structure, ascertaining, etc. are considered to be “judgment (determination)”. Further, regarding “judgment (determination)”, reception (for example, receiving information), transmission (for example, transmission of information), input (input), output (output), and access (for example) may also be performed (for example, Accessing data in memory, etc. is considered to be “judgment (determination)”.
  • judgment (determination) it is also possible to consider “resolving”, “selecting”, selecting (choosing), establishing (comparing), comparing (comparing), etc. as “judging (determining)”. That is to say, regarding "judgment (determination)", several actions can be regarded as performing "judgment (determination)".
  • connection means any direct or indirect connection or combination between two or more units, This includes the case where there is one or more intermediate units between two units that are “connected” or “coupled” to each other.
  • the combination or connection between the units may be physical, logical, or a combination of the two.
  • connection can also be replaced with "access”.
  • two units may be considered to be electrically connected by using one or more wires, cables, and/or printed, and as a non-limiting and non-exhaustive example by using a radio frequency region.
  • the electromagnetic energy of the wavelength of the region, the microwave region, and/or the light is "connected” or "bonded” to each other.

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Abstract

本发明涉及一种实现上行链路数据接收的早期确认的数据发送方法、数据接收方法、用户设备和基站。所述用于用户设备的数据发送方法，包括：以初始重发次数向所述基站发送上行链路数据；在预定间隔内判断是否从所述基站接收上行链路数据的确认信号，其中，在所述预定间隔内接收到所述确认信号的情况下，停止发送所述上行链路数据；以及在所述预定间隔内没有接收到所述确认信号的情况下，以后续重发模式向所述基站发送上行链路数据，直到从所述基站接收到所述确认信号，或者达到最大重发次数。

Description

数据发送方法、数据接收方法、用户设备和基站 技术领域
本发明涉及移动通信领域，更具体地，本发明一种实现上行链路数据接收的早期确认的数据发送方法、数据接收方法、用户设备和基站。
背景技术
随着移动通信产业的发展以及对于移动数据业务需求的不断增长，人们对于移动通信的速率和服务质量(Qos)的要求越来越高。当前，网络多元化、宽带化、综合化、智能化的第五代移动通信技术(5G)标准正在制定并且走向应用。从信息交互对象不同的角度划分，未来5G应用将涵盖三大类场景：增强移动宽带(eMBB)、海量机器类通信(mMTC)和超可靠低时延(URLLC)，其中基于5G的mMTC可以通过eMTC和NB-IoT演进实现。
在诸如eMTC的物联网应用场景中，希望实现人与物以及物与物之间的海量连接，提高网络覆盖率和资源效率并且节约用户设备的功耗。在Rel-13中提出了通过应用上行链路数据重发，以提高网络覆盖率。例如，上行链路数据重发次数集合可以定义为：{1,4,8,16,32…2048}。对于由诸如无线资源控制(RRC)指示的最大重发次数16，特定用户设备(UE)的重发次数则可以设置为{1,4,8,16}。
为了实现物联网应用场景中的上行链路数据接收的早期确认，一种直接的方法是减小重发次数集合的粒度，例如，将重发次数集合可以定义为：{1,2,3,4,…32}。然而，这种重发次数集合的粒度的理想配置将导致下行链路控制信息(DCI)的开销增加，并且信道质量指示(CQI)量也无法支持该精细的粒度配置。此外，在URLLC场景中，提出了一种早期确认方案，用户设备20在向基站10发送上行链路数据的同时，检测来自基站10的确认反馈(ACK)。例如，在如图2A所示的场景下，估计的重发次数为16次，在用户设备20在第10次重发之后，检测到来自基站10的确认反馈，则此后用户设备20停止重发而无需执行剩余的6次重发。
然而，对于物联网场景中的半双工模式下的用户设备，则无法应用URLLC场景中全双工模式的用户设备在发送数据的同时检测来自基站的确认反馈的方案。图2B示出了半双工模式下的用户设备无法同时收发信号， 所以必须在执行完预定重发次数之后，才能接收来自基站的确认反馈的情况。例如，对于处于良好覆盖状态的用户设备20 1，其需要执行4次重发，对于处于良好覆盖状态的用户设备20 2，其需要执行8次重发，此后才能接收来自基站的HARQ反馈。而实际上，用户设备20 1可能无需4次重发就已经成功发送，用户设备20 2可能无需8次重发就已经成功发送。如此，不必要的重发以及确认的滞后导致功耗的浪费。此外，即使对于物联网场景中的全双工模式下的用户设备来说，用户设备在每次重发之后都检测来自基站的确认反馈，这将需要极高的功耗。
发明内容
鉴于上述问题，本发明提供一种数据发送方法、数据接收方法、用户设备和基站。
根据本发明的一个实施例，提供了一种用于用户设备的数据发送方法，包括：以初始重发次数向所述基站发送上行链路数据；在预定间隔内判断是否从所述基站接收上行链路数据的确认信号，其中，在所述预定间隔内接收到所述确认信号的情况下，停止发送所述上行链路数据；以及在所述预定间隔内没有接收到所述确认信号的情况下，以后续重发模式向所述基站发送上行链路数据，直到从所述基站接收到所述确认信号，或者达到最大重发次数。
根据本发明的另一个实施例，提供了一种用于基站的数据接收方法，包括：接收以初始重发次数从所述用户设备发送的上行链路数据；在预定间隔内判断是否从所述用户设备正确接收所述上行链路数据，在确定正确接收所述上行链路数据的情况下，向所述用户设备发送确认信号。
根据本发明的又一个实施例，提供了一种用户设备，包括：接收单元，用于从基站接收信号；发送单元，用于以初始重发次数向所述基站发送上行链路数据；以及重发控制单元，用于在预定间隔内判断是否从所述基站接收上行链路数据的确认信号，其中，在所述预定间隔内接收到所述确认信号的情况下，所述重发控制单元控制所述发送单元停止发送所述上行链路数据；以及在所述预定间隔内没有接收到所述确认信号的情况下，所述重发控制单元控制所述发送单元以后续重发模式向所述基站发送上行链路数据，直到从所述基站接收到所述确认信号，或者达到最大重发次数。
根据本发明的再一个实施例，提供了一种基站，包括：发送单元，用于 向用户设备发送信号；接收单元，用于接收以初始重发次数从所述用户设备发送的上行链路数据；以及接收控制单元，用于在预定间隔内判断是否从所述用户设备正确接收所述上行链路数据，在确定正确接收所述上行链路数据的情况下，所述接收控制单元控制所述发送单元向所述用户设备发送确认信号。
根据本发明实施例的数据发送方法、数据接收方法、用户设备和基站，通过在大的上行链路数据重发次数中插入用于检测来自基站的HARQ反馈的间隔，在无需完全执行预先指定或估计的最大重发次数的情况下，实现上行链路数据接收的早期确认，从而节约了用户设备的功耗、改善了资源的利用效率并且提高了调度的灵活性。
要理解的是，前面的一般描述和下面的详细描述两者都是示例性的，并且意图在于提供要求保护的技术的进一步说明。
附图说明
通过结合附图对本发明实施例进行更详细的描述，本发明的上述以及其它目的、特征和优势将变得更加明显。附图用来提供对本发明实施例的进一步理解，并且构成说明书的一部分，与本发明实施例一起用于解释本发明，并不构成对本发明的限制。在附图中，相同的参考标号通常代表相同部件或步骤。
图1是概述根据本发明实施例的通信系统的示意图；
图2A和2B是图示现有的全双工和半双工模式下上行链路数据的确认过程的示意图；
图3是图示根据本发明实施例的用于用户设备的数据发送方法的第一示例流程图；
图4是图示根据本发明实施例的上行链路数据的早期确认过程的第一示例的示意图；
图5是图示根据本发明实施例的上行链路数据的早期确认过程的第二示例的示意图；
图6是图示根据本发明实施例的用于用户设备的数据发送方法中重发模式的配置的示意图；
图7是图示根据本发明实施例的用于用户设备的数据发送方法的第二 示例流程图；
图8是图示根据本发明实施例的用于用户设备的数据发送方法中初始重发次数的配置的示意图；
图9是图示根据本发明实施例的上行链路数据的早期确认过程的第三示例的示意图；
图10是图示根据本发明实施例的用于用户设备的数据发送方法中后续重发次数的配置的示意图；
图11是图示根据本发明实施例的用于用户设备的数据发送方法中重发模式的配置的另一示意图；
图12A和12B是图示根据本发明实施例的上行链路数据的早期确认过程的第四示例的示意图；
图13是图示根据本发明实施例的用于基站的数据接收方法的示例流程图；
图14是图示根据本发明实施例的用户设备的框图；
图15是图示根据本发明实施例的基站的框图；以及
图16是图示根据本发明实施例的基站及用户设备的硬件构成的示例的框图。
具体实施方式
为了使得本发明的目的、技术方案和优点更为明显，下面将参照附图详细描述根据本发明的示例实施例。显然，所描述的实施例仅仅是本发明的一部分实施例，而不是本发明的全部实施例，应理解，本发明不受这里描述的示例实施例的限制。基于本发明中描述的本发明实施例，本领域技术人员在没有付出创造性劳动的情况下所得到的所有其它实施例都应落入本发明的保护范围之内。
图1是概述根据本发明实施例的通信系统的示意图。如图1所示，根据本发明实施例的通信系统包括基站(eNB)10和用户设备(UE)20。基站10和用户设备20在预定的通信信道上，执行基于预定协议的通信信号的收发。
本发明可用于基于5G的物联网应用场景，为了满足该应用场景下用户设备低功耗、高资源的利用效率和灵活调度的需要，希望能够实现上行链路 数据接收的早期确认。
首先，参照图3到图6描述根据本发明实施例的用于用户设备的数据发送方法的第一示例。在根据本发明实施例的用于用户设备的数据发送方法的第一示例中，通过以不同的重发粒度在预定间隔模式进行固定的重发发送。
图3是图示根据本发明实施例的用于用户设备的数据发送方法的第一示例流程图。如图3所示，根据本发明实施例的用于用户设备的数据发送方法的第一示例包括以下步骤。
在步骤S301中，以初始重发次数向基站发送上行链路数据。
容易理解的是，在用户设备以初始重发次数向基站发送上行链路数据之前，用户设备需要知晓其上行链路数据的最大重发次数。在本发明的实施例中，最大重发次数包括但不限于以下两种确定方式。在第一种确定方式中，在用户设备向基站发送上行链路数据之前，首先从基站接收上行授权信号(UL grant)，基站在该上行授权信号中向用户设备指示上行链路数据的最大重发次数。在第二种确定方式中，在用户设备可以在无需接收上行授权信号就向基站发送上行链路数据的情况，所述用户设备基于与所述基站之间通信的测量结果，确定所述最大重发次数。例如，用户设备基于与当前基站之间通信的参考信号接收功率(RSRP)和/或参考信号接收质量(RSRQ)，确定所述最大重发次数。即，由RSRP/RSRQ指示通信覆盖越差，确定的所述最大重发次数越大，并且反之亦然。此外，需要主意的是，所述最大重发次数可以是遵循前述重发次数集合{1,4,8,16,32…2048}中的次数。
此后，处理进到步骤S302。
在步骤S302中，判断在预定间隔内判断是否从所述基站接收上行链路数据的确认信号。在本发明的实施例中，需要预先定义与所述预定间隔相关的参数。具体地，所述预定间隔的长度对应于所述用户设备切换到信号接收信道并且解码检测从基站发送的信号所需的信道切换和信号解码时间(例如，3ms)，如此使得基站有足够的时间切换到对应于用户设备的信号，解码从用户设备发送的上行链路数据，并且根据上行链路数据的解码结果判断是否正确接收，并且向用户设备发送相应的HARQ反馈，即确认信号(ACK)或不确认信号(NACK)。
如果在步骤S302中获得肯定结果，即在所述预定间隔内接收到所述确认信号，则处理进到步骤S303。在步骤S303中，用户设备停止发送所述上 行链路数据。
相反地，如果在步骤S302中获得否定结果，即在所述预定间隔内没有接收到所述确认信号(包括没有接收到所述确认信号(ACK)或者相反地接收到所述不确认信号(NACK))，则处理进到步骤S304。在步骤S304中，用户设备以后续重发模式向所述基站发送上行链路数据，直到从所述基站接收到所述确认信号，或者达到最大重发次数。容易理解是，以后续重发模式向所述基站发送上行链路数据包括：重复以多个后续重发次数向所述基站发送上行链路数据，其中，每次在以所述多个后续重发次数中的一个重发次数向所述基站发送上行链路数据之后，在所述预定间隔内判断是否从所述基站接收上行链路数据的确认信号，并且最终在从所述基站接收到所述确认信号或者达到最大重发次数的情况下结束上行链路数据的发送。
在如图3所示的根据本发明实施例的用于用户设备的数据发送方法的第一示例中，通过在以初始重发次数向基站发送上行链路数据之后，插入预定间隔以等待判断是否从所述基站接收上行链路数据的确认信号，从而可能在接收到确认信号的情况下，提前停止上行链路数据的重发，避免了不必要的重发导致的功耗和资源的浪费。
以下，将进一步参照结合具体的确认过程示例，描述初始重发次数、后续重发模式的配置方式及其指示方式。
图4和图5分别是图示根据本发明实施例的上行链路数据的早期确认过程的第一和第二示例的示意图。图6是图示根据本发明实施例的用于用户设备的数据发送方法中重发模式的配置的示意图。
如图4所示，用户设备20从基站10接收到上行授权信号之后开始上行链路数据的发送。如上所述，本发明不限于此，用户设备20可以在无需接收到上行授权信号的情况下执行上行链路数据的发送。并且，如上所述，上行授权信号中向用户设备指示上行链路数据的最大重发次数，或者所述用户设备基于与所述基站之间通信的测量结果，确定所述最大重发次数。如图6所示，最大重发次数可以是遵循重发次数集合{1,4,8,16,32…2048}中的次数，例如图6中示出的1,4,8,16,32。
进一步地，如图4和图5所示，在最大重发次数是16次的情况下，用户设备20以8次作为初始重发次数向基站发送上行链路数据。
具体地，初始重发次数与最大重发次数满足以下关系：在所述最大重发 次数小于等于预定阈值的情况下，所述初始重发次数等于所述最大重发次数，并且在所述最大重发次数大于预定阈值的情况下，所述初始重发次数为所述最大重发次数的预定比例。如图6所示，预定阈值例如是4，在所述最大重发次数(1和4)小于等于预定阈值(4)的情况下，所述初始重发次数等于所述最大重发次数，即设为1或4。在所述最大重发次数(8,16,32)大于预定阈值(4)的情况下，所述初始重发次数(4,8,16)为所述最大重发次数的预定比例(例如，1/2)。
进一步地，如图4和图5所示，在执行初始重发次数之后，在预定间隔内判断是否从基站接收上行链路数据的确认信号。图4示出了没有接收到所述确认信号，图5示出了没有接收到所述确认信号而是接收到了不确认信号。在图4和图5示出的这两种没有接收到确认信号的情况下，用户设备都继续以后续重发模式向所述基站发送上行链路数据，直到如图4和图5所示在第二次预定间隔内接收到确认信号，从而与图4和图5的第二行所示的16次的最大重发次数相比，提前结束了上行链路数据发送。
具体地，后续重发模式中的多个后续重发次数与所述初始重发次数满足以下关系：所述多个后续重发次数的每一个为等于所述初始重发次数的第一重发次数模式，或者所述多个后续重发次数的每一个大于或小于所述初始重发次数的第二重发次数模式。如图6所示，在所述最大重发次数大于预定阈值的情况下，即存在多个后续重发次数的情况下，所述多个后续重发次数具有均等结构的配置1和下降结构的配置2。在均等结构的配置1，所述初始重发次数和所述多个后续重发次数的每一个均等配置为(4,4)、(4,4,4,4)和(4,4,4,4,4,4,4,4)；在下降结构的配置2，所述初始重发次数和所述多个后续重发次数的每一个下降配置为(8,4,4)和(16,8,8)。
在本发明的实施例中，用户设备可以基于来自所述基站的指示，在所述第一重发次数模式和所述第二重发次数模式之间切换。例如，在诸如下行链路控制信息(DCI)中添加一个标志位，用于指示用户设备在上述第一重发次数模式和第二重发次数模式之间执行切换。
此外，在本发明的实施例中，所述预定间隔的长度、起始点、传输所需的时间/频率资源、所述初始重发次数和所述多个后续重发次数可以在所述基站的系统信息块(SIB)或对于所述用户设备特定的无线资源控制信令(RRC)中指示。可替代地，可以根据所有所述最大重发次数可能(例如，重发次数 集合{1,4,8,16,32…2048}中的次数)，预先定义上述参数信息。
接下来，参照图7到图12B描述根据本发明实施例的用于用户设备的数据发送方法的第二示例。在根据本发明实施例的用于用户设备的数据发送方法的第二示例中，通过在间隔中接收的反馈中指示重发次数实现了更灵活的重发发送。
图7是图示根据本发明实施例的用于用户设备的数据发送方法的第二示例流程图。如图7所示，根据本发明实施例的用于用户设备的数据发送方法的第二示例包括以下步骤。
在步骤S701中，以初始重发次数向基站发送上行链路数据。图7所示的步骤S701与参照图3描述的步骤S301相同，其中最大重发次数以及初始重发次数的确定方式也相同，在此将省略其重复描述。此外，容易理解的是，在根据本发明实施例的用于用户设备的数据发送方法的第二示例中，此后的预定间隔的长度、起始点、传输所需的时间/频率资源、所述初始重发次数和所述多个后续重发次数等参数的预定和指示方式也与根据本发明实施例的用于用户设备的数据发送方法的第一示例相同，在此将省略其重复描述。
此后，处理进到步骤S702。
在步骤S702中，判断在预定间隔内判断是否从所述基站接收上行链路数据的确认信号。如果在步骤S702中获得肯定结果，即在所述预定间隔内接收到所述确认信号，则处理进到步骤S703。在步骤S703中，用户设备停止发送所述上行链路数据。
相反地，如果在步骤S702中获得否定结果，并且确认接收到不确认信号(NACK)，处理进到步骤S704。
在步骤S704中，确定不确认信号指示的后续重发模式。在本发明的实施例中，可以在HARQ反馈(NACK)中添加2位以指示后续重发模式。后续重发模式可以由基站基于已接收的上行链路数据的信息(例如，信号与干扰加噪声比(SINR))来确定。在已接收的上行链路数据的SINR高的情况下，可以适应性地减少后续重发模式的后续重发次数，或者反之亦然。
此后，处理进到步骤S705。
在步骤S705中，以所述不确认信号指示的所述后续重发模式向所述基站发送上行链路数据，直到从所述基站接收到所述确认信号，或者达到所述最大重发次数。容易理解是，以所述不确认信号指示的所述后续重发模式向 所述基站发送上行链路数据包括：重复以多个后续重发次数向所述基站发送上行链路数据，其中，每次在以所述多个后续重发次数中的一个重发次数向所述基站发送上行链路数据之后，在所述预定间隔内判断是否从所述基站接收上行链路数据的确认信号，如果接收到的是不确认信号，就继续以该不确认信号指示的下一个重发次数向所述基站发送上行链路数据，并且最终在从所述基站接收到所述确认信号或者达到最大重发次数的情况下结束上行链路数据的发送。
在如图7所示的根据本发明实施例的用于用户设备的数据发送方法的第二示例中，通过在以初始重发次数向基站发送上行链路数据之后，插入预定间隔以等待判断是否从所述基站接收上行链路数据的确认信号，从而可能在接收到确认信号的情况下，提前停止上行链路数据的重发，而在接收到不确定信号的情况下，根据由该不确认信号指示的后续重发次数继续上行链路数据的重发，从而避免了不必要的重发导致的功耗和资源的浪费。
以下，将进一步参照结合具体的确认过程示例，描述初始重发次数、后续重发模式的配置方式及其指示方式。
图8是图示根据本发明实施例的用于用户设备的数据发送方法中初始重发次数的配置的示意图；图9是图示根据本发明实施例的上行链路数据的早期确认过程的第三示例的示意图；图10是图示根据本发明实施例的用于用户设备的数据发送方法中后续重发次数的配置的示意图。
图8所示的初始重发次数的配置实质上与图6示例的用于用户设备的数据发送方法中重发模式的配置中的初始重发次数的配置相同。在所述最大重发次数N小于等于预定阈值4的情况下，直接使用所述最大重发次数N作为初始重发次数。在所述最大重发次数N大于预定阈值4的情况下，使用所述最大重发次数的N的1/2作为初始重发次数。
如图9所示，用户设备20从基站10接收到上行授权信号之后开始上行链路数据的发送。如上所述，本发明不限于此，用户设备20可以在无需接收到上行授权信号的情况下执行上行链路数据的发送。在图9的示例中，初始重发次数的配置遵循图8所示的配置方式，在最大重发次数是16的情况下，初始重发次数为8次。
进一步地，如图9所示，在执行初始重发次数之后，在预定间隔内从基站接收上行链路数据的不确认信号(NACK)。该不确认信号配置有额外的2 位标识位以指示后续重发模式。
图10示出了由不确认信号(NACK)中的2位标识位以指示的后续重发模式的示例。具体地，在2位标识位取值“00”的情况下，指示后续重发模式为配置1，即后续重发次数为N/2 (n-1)；在2位标识位取值“01”的情况下，指示后续重发模式为配置2，即后续重发次数为N/n；在2位标识位取值“10”的情况下，指示后续重发模式为配置3，即后续重发次数为N/2 (n)；在2位标识位取值“11”的情况下，指示后续重发模式为配置4，即后续重发次数为Nlog 2(n+1/n)。容易理解的是，图10示出的后续重发模式配置是示例性的，本发明不限于此。
进一步地，如图9所示，由不确认信号(NACK)指示后续重发次数为4次，用户设备继续以该灵活指示的后续重发次数向所述基站发送上行链路数据，直到如图9所示在第二次预定间隔内接收到确认信号，从而与图9的第二行所示的16次的最大重发次数相比，提前结束了上行链路数据发送。
此外，根据本发明实施例的初始重发次数和后续重发模式不限于上述配置。图11是图示根据本发明实施例的用于用户设备的数据发送方法中重发模式的配置的另一示意图；图12A和12B是图示根据本发明实施例的上行链路数据的早期确认过程的第四示例的示意图。
如图11所示，用户设备可以基于所述最大重发次数，选择所述最大重发次数的上一级重发次数或者用户估计的最大重发次数的作为所述初始重发次数和后续重发次数。具体地，在重发次数集合为{1,4,8,16,32…2048}的前提下，对于用户设备估计的重发次数为8-16次，上行授权信号指示的最大重发次数为16次的情况，选择所述最大重发次数16的上一级重发次数8作为所述初始重发次数和后续重发次数。
图12A和12B示出了初始重发次数和后续重发次数采用图11所示的配置方式下的早期确认过程。
如图12A所示，在所述最大重发次数为16的情况下，选择16的上一级重发次数8作为所述初始重发次数。在初始重发8次之后，在预定间隔中接收到从基站发送的确认信号(ACK)，则停止发送。
如图12B所示，在所述最大重发次数为16的情况下，选择16的上一级重发次数8作为所述初始重发次数。在初始重发8次之后，在预定间隔中没有接收到从基站发送的确认信号(ACK)或者接收到不确认信号(NACK)， 则继续选择16的上一级重发次数8作为所述后续重发次数，在执行8次的后续重发之后，接收到从基站发送的确认信号(ACK)，则停止发送。
以上，参照附图描述了根据本发明实施例的用于用户设备的数据发送方法，以下将进一步描述相应的根据本发明实施例的用于基站的数据接收方法。
图13是图示根据本发明实施例的用于基站的数据接收方法的示例流程图。如图13所示，根据本发明实施例的用于基站的数据接收方法包括以下步骤。
在步骤S1301中，接收以初始重发次数从所述用户设备发送的上行链路数据。容易理解的是，在本发明的实施例中，用户设备可以是从基站接收上行授权信号(UL grant)之后开始以初始重发次数发送上行链路数据。可替代地，用户设备可以在无需接收上行授权信号的情况下就向基站发送上行链路数据。
此外，如上所述，在接收以初始重发次数从所述用户设备发送的上行链路数据之前，需要确定上行链路数据的最大重发次数。基站可以在上行授权信号中向用户设备指示上行链路数据的最大重发次数。可替代地，所述用户设备基于与所述基站之间通信的测量结果，确定所述最大重发次数。此外，初始重发次数可以采用参照图6和图8描述的配置方式，在此将省略其重复描述。
此后，处理进到步骤S1302。
在步骤S1302中，在预定间隔内判断是否从所述用户设备正确接收所述上行链路数据。预定间隔的相关参数配置可以采用如上所述的方式，即所述预定间隔的长度对应于所述用户设备切换到信号接收信道并且解码检测从基站发送的信号所需的信道切换和信号解码时间(例如，3ms)，如此使得基站有足够的时间切换到对应于用户设备的信号，解码从用户设备发送的上行链路数据，并且根据上行链路数据的解码结果判断是否正确接收，并且向用户设备发送相应的HARQ反馈，即确认信号(ACK)或不确认信号(NACK)。此外，预定间隔的长度、起始点、传输所需的时间/频率资源、初始重发次数和多个后续重发次数可以在所述基站的系统信息块(SIB)或对于用户设备特定的无线资源控制信令(RRC)中指示。可替代地，可以根据所有所述最大重发次数可能(例如，重发次数集合{1,4,8,16,32…2048}中 的次数)，预先定义上述参数信息。
如果在步骤S1302中获得肯定结果，即从所述用户设备正确接收所述上行链路数据，则处理进到步骤S1303。在步骤S1303中，向所述用户设备发送确认信号。
相反地，如果在步骤S1302中获得否定结果，即没有从所述用户设备正确接收所述上行链路数据，则处理进到步骤S1304。在步骤S1304中，接收以后续重发模式从所述用户设备发送上行链路数据，直到确定正确接收所述上行链路数据，或者达到所述最大重发次数。此外，尽管没有在图13中示出，容易理解的是，如果在步骤S1302中获得否定结果，基站可以向所述用户设备发送不确认信号。进一步地，所述基站可以基于接收到的所述上行链路数据的信息，生成所述确认信号和所述不确认信号，并且所述不确认信号能够用于指示所述用户设备的后续重发模式。关于所述后续重发模式的配置，可以采用参照图6、图10和图11描述的配置方式，在此将省略其重复描述。
以下，将参照图14和图15进一步分别描述执行上述数据发送方法和数据接收方法的用户设备和基站。
图14是图示根据本发明实施例的用户设备的框图。如图14所示，根据本发明实施例的用户设备20包括接收单元201、发送单元202和重发控制单元203。
具体地，接收单元201用于从基站10接收信号。发送单元202用于以初始重发次数向所述基站10发送上行链路数据。重发控制单元203用于在预定间隔内判断是否从所述基站10接收上行链路数据的确认信号。其中，在所述预定间隔内接收到所述确认信号的情况下，所述重发控制单元203控制所述发送单元202停止发送所述上行链路数据；以及在所述预定间隔内没有接收到所述确认信号的情况下，所述重发控制单元203控制所述发送单元202以后续重发模式向所述基站10发送上行链路数据，直到从所述基站10接收到所述确认信号，或者达到最大重发次数。
进一步地，所述重发控制单元203还用于在以初始重发次数向所述基站10发送上行链路数据之前，确定上行链路数据的最大重发次数。如上所述，经由所述接收单元201从所述基站10接收的上行授权信号向用户设备20指示上行链路数据的最大重发次数。或者，基于所述用户设备20与所述基站 1010之间通信的测量结果，确定所述最大重发次数。
进一步地，在所述预定间隔内没有接收到所述确认信号的情况下，所述重发控制单元203控制所述发送单元201重复以多个后续重发次数向所述基站10发送上行链路数据。每次在以所述多个后续重发次数中的一个重发次数向所述基站10发送上行链路数据之后，所述重发控制单元203在所述预定间隔内判断是否从所述基站10接收上行链路数据的确认信号。
更进一步地，在所述预定间隔内接收到不确认信号的情况下，所述重发控制单元203控制所述发送单元201以后续重发模式向所述基站10发送上行链路数据，直到从所述基站10接收到所述确认信号，或者达到所述最大重发次数。
可替代地，在所述预定间隔内接收到不确认信号的情况下，所述重发控制单元203确定所述不确认信号指示的所述后续重发模式，并且以控制所述发送单元201所述不确认信号指示的所述后续重发模式向所述基站10发送上行链路数据，直到从所述基站10接收到所述确认信号，或者达到所述最大重发次数。
此外，所述重发控制单元203可以基于所述最大重发次数，选择所述最大重发次数的上一级重发次数作为所述初始重发次数和后续重发次数。所述接收单元201在与所述上行授权信号相同信道上或者以下行控制信息格式或者在预定物理信道中接收所述确认信号和所述不确认信号。
此外，最大重发次数、初始重发次数、后续重发模式以及预定间隔的配置可以采用以上描述的配置方式，在此将省略其重复描述。
图15是图示根据本发明实施例的基站的框图。如图15所示，根据本发明实施例的基站10包括发送单元101、接收单元102和接收控制单元103。
具体地，发送单元101用于向用户设备20发送信号。接收单元102用于接收以初始重发次数从所述用户设备20发送的上行链路数据。接收控制单元103用于在预定间隔内判断是否从所述用户设备20正确接收所述上行链路数据，在确定正确接收所述上行链路数据的情况下，所述接收控制单元103控制所述发送单元101向所述用户设备20发送确认信号。
进一步地，从所述用户设备20接收上行链路数据之前，确定上行链路数据的最大重发次数。基站10可以通过所述发送单元101发送上行授权信号向用户设备20指示上行链路数据的最大重发次数。或者，所述用户设备 20基于与所述基站10之间通信的测量结果，确定所述最大重发次数。
进一步地，在确定没有正确接收所述上行链路数据的情况下，所述接收控制单元103控制所述发送单元101向所述用户设备20发送不确认信号。其中，所述接收控制单元103基于接收到的所述上行链路数据的信息，生成所述确认信号和所述不确认信号，并且所述不确认信号能够用于指示所述用户设备的后续重发模式。
进一步地，在确定没有正确接收所述上行链路数据的情况下，所述接收单元103接收以后续重发模式从所述用户设备20发送上行链路数据，直到所述接收控制单元103确定正确接收所述上行链路数据，或者达到所述最大重发次数。
进一步地，所述预定间隔的长度对应于所述基站10接收上行链路数据所需的信道切换和信号解码时间，并且所述发送单元103经由系统信息块或所述用户设备20的无线资源控制信令指示所述预定间隔的长度、所述初始重发次数和所述多个后续重发次数，或者对于所述最大重发次数预先确定所述预定间隔的长度、所述初始重发次数和所述多个后续重发次数。
此外，最大重发次数、初始重发次数、后续重发模式以及预定间隔的配置可以采用以上描述的配置方式，在此将省略其重复描述。
上述实施例的说明中使用的框图示出了以功能为单位的块。这些功能块(结构单元)通过硬件和/或软件的任意组合来实现。此外，各功能块的实现手段并不特别限定。即，各功能块可以通过在物理上和/或逻辑上相结合的一个装置来实现，也可以将在物理上和/或逻辑上相分离的两个以上装置直接地和/或间接地(例如通过有线和/或无线)连接从而通过上述多个装置来实现。
例如，本发明的实施例中的基站、用户设备等可以作为执行本发明的无线通信方法的处理的计算机来发挥功能。图16是图示根据本发明实施例的基站及用户设备的硬件构成的示例的框图。上述的基站10和用户设备20可以作为在物理上包括处理器1001、内存1002、存储器1003、通信装置1004、输入装置1005、输出装置1006、总线1007等的计算机装置来构成。
另外，在以下的说明中，“装置”这样的文字也可替换为电路、设备、单元等。基站10和用户设备20的硬件结构可以包括一个或多个图中所示的各装置，也可以不包括部分装置。
例如，处理器1001仅图示出一个，但也可以为多个处理器。此外，可 以通过一个处理器来执行处理，也可以通过一个以上的处理器同时、依次、或采用其它方法来执行处理。另外，处理器1001可以通过一个以上的芯片来安装。
基站10和用户设备20中的各功能例如通过如下方式实现：通过将规定的软件(程序)读入到处理器1001、内存1002等硬件上，从而使处理器1001进行运算，对由通信装置1004进行的通信进行控制，并对内存1002和存储器1003中的数据的读出和/或写入进行控制。
处理器1001例如使操作系统进行工作从而对计算机整体进行控制。处理器1001可以由包括与周边装置的接口、控制装置、运算装置、寄存器等的中央处理器(CPU，Central Processing Unit)构成。例如，上述的接收控制单元103、重发控制单元203等可以通过处理器1001实现。
此外，处理器1001将程序(程序代码)、软件模块、数据等从存储器1003和/或通信装置1004读出到内存1002，并根据它们执行各种处理。作为程序，可以采用使计算机执行在上述实施方式中说明的动作中的至少一部分的程序。例如，用户设备20的重发控制单元203可以通过保存在内存1002中并通过处理器1001来工作的控制程序来实现，对于其它功能块，也可以同样地来实现。内存1002是计算机可读取记录介质，例如可以由只读存储器(ROM，Read Only Memory)、可编程只读存储器(EPROM，Erasable Programmable ROM)、电可编程只读存储器(EEPROM，Electrically EPROM)、随机存取存储器(RAM，Random Access Memory)、其它适当的存储介质中的至少一个来构成。内存1002也可以称为寄存器、高速缓存、主存储器(主存储装置)等。内存1002可以保存用于实施本发明的一实施方式所涉及的无线通信方法的可执行程序(程序代码)、软件模块等。
存储器1003是计算机可读取记录介质，例如可以由软磁盘(flexible disk)、软(注册商标)盘(floppy disk)、磁光盘(例如，只读光盘(CD-ROM(Compact Disc ROM)等)、数字通用光盘、蓝光(Blu-ray，注册商标)光盘)、可移动磁盘、硬盘驱动器、智能卡、闪存设备(例如，卡、棒(stick)、密钥驱动器(key driver))、磁条、数据库、服务器、其它适当的存储介质中的至少一个来构成。存储器1003也可以称为辅助存储装置。
通信装置1004是用于通过有线和/或无线网络进行计算机间的通信的硬件(发送接收设备)，例如也称为网络设备、网络控制器、网卡、通信模块 等。通信装置1004为了实现例如频分双工(FDD，Frequency Division Duplex)和/或时分双工(TDD，Time Division Duplex)，可以包括高频开关、双工器、滤波器、频率合成器等。例如，上述的发送单元101、接收单元102、接收单元201、发送单元202等可以通过通信装置1004来实现。
输入装置1005是接受来自外部的输入的输入设备(例如，键盘、鼠标、麦克风、开关、按钮、传感器等)。输出装置1006是实施向外部的输出的输出设备(例如，显示器、扬声器、发光二极管(LED，Light Emitting Diode)灯等)。另外，输入装置1005和输出装置1006也可以为一体的结构(例如触控面板)。
此外，处理器1001、内存1002等各装置通过用于对信息进行通信的总线1007连接。总线1007可以由单一的总线构成，也可以由装置间不同的总线构成。
此外，基站10和用户设备20可以包括微处理器、数字信号处理器(DSP，Digital Signal Processor)、专用集成电路(ASIC，Application Specific Integrated Circuit)、可编程逻辑器件(PLD，Programmable Logic Device)、现场可编程门阵列(FPGA，Field Programmable Gate Array)等硬件，可以通过该硬件来实现各功能块的部分或全部。例如，处理器1001可以通过这些硬件中的至少一个来安装。
以上，参照图1到图16描述了根据本发明实施例的数据发送方法、数据接收方法、用户设备和基站，通过在大的上行链路数据重发次数中插入用于检测来自基站的HARQ反馈的间隔，在无需完全执行预先指定或估计的最大重发次数的情况下，实现上行链路数据接收的早期确认，从而节约了用户设备的功耗、改善了资源的利用效率并且提高了调度的灵活性。
另外，关于本说明书中说明的用语和/或对本说明书进行理解所需的用语，可以与具有相同或类似含义的用语进行互换。例如，信道和/或符号也可以为信号(信令)。此外，信号也可以为消息。参考信号也可以简称为RS(Reference Signal)，根据所适用的标准，也可以称为导频(Pilot)、导频信号等。此外，分量载波(CC，Component Carrier)也可以称为小区、频率载波、载波频率等。
此外，本说明书中说明的信息、参数等可以用绝对值来表示，也可以用与规定值的相对值来表示，还可以用对应的其它信息来表示。例如，无线资 源可以通过规定的索引来指示。进一步地，使用这些参数的公式等也可以与本说明书中明确公开的不同。
在本说明书中用于参数等的名称在任何方面都并非限定性的。例如，各种各样的信道(物理上行链路控制信道(PUCCH，Physical Uplink Control Channel)、物理下行链路控制信道(PDCCH，Physical Downlink Control Channel)等)和信息单元可以通过任何适当的名称来识别，因此为这些各种各样的信道和信息单元所分配的各种各样的名称在任何方面都并非限定性的。
本说明书中说明的信息、信号等可以使用各种各样不同技术中的任意一种来表示。例如，在上述的全部说明中可能提及的数据、命令、指令、信息、信号、比特、符号、芯片等可以通过电压、电流、电磁波、磁场或磁性粒子、光场或光子、或者它们的任意组合来表示。
此外，信息、信号等可以从上层向下层、和/或从下层向上层输出。信息、信号等可以经由多个网络节点进行输入或输出。
输入或输出的信息、信号等可以保存在特定的场所(例如内存)，也可以通过管理表进行管理。输入或输出的信息、信号等可以被覆盖、更新或补充。输出的信息、信号等可以被删除。输入的信息、信号等可以被发往其它装置。
信息的通知并不限于本说明书中说明的方式/实施方式，也可以通过其它方法进行。例如，信息的通知可以通过物理层信令(例如，下行链路控制信息(DCI，Downlink Control Information)、上行链路控制信息(UCI，Uplink Control Information))、上层信令(例如，无线资源控制(RRC，Radio Resource Control)信令、广播信息(主信息块(MIB，Master Information Block)、系统信息块(SIB，System Information Block)等)、媒体存取控制(MAC，Medium Access Control)信令)、其它信号或者它们的组合来实施。
另外，物理层信令也可以称为L1/L2(第1层/第2层)控制信息(L1/L2控制信号)、L1控制信息(L1控制信号)等。此外，RRC信令也可以称为RRC消息，例如可以为RRC连接建立(RRC Connection Setup)消息、RRC连接重配置(RRC Connection Reconfiguration)消息等。此外，MAC信令例如可以通过MAC控制单元(MAC CE(Control Element))来通知。
此外，规定信息的通知(例如，“ACK”、“NACK”的通知)并不限于显 式地进行，也可以隐式地(例如，通过不进行该规定信息的通知，或者通过其它信息的通知)进行。
关于判定，可以通过由1比特表示的值(0或1)来进行，也可以通过由真(true)或假(false)表示的真假值(布尔值)来进行，还可以通过数值的比较(例如与规定值的比较)来进行。
软件无论被称为软件、固件、中间件、微代码、硬件描述语言，还是以其它名称来称呼，都应宽泛地解释为是指命令、命令集、代码、代码段、程序代码、程序、子程序、软件模块、应用程序、软件应用程序、软件包、例程、子例程、对象、可执行文件、执行线程、步骤、功能等。
此外，软件、命令、信息等可以经由传输介质被发送或接收。例如，当使用有线技术(同轴电缆、光缆、双绞线、数字用户线路(DSL，Digital Subscriber Line)等)和/或无线技术(红外线、微波等)从网站、服务器、或其它远程资源发送软件时，这些有线技术和/或无线技术包括在传输介质的定义内。
本说明书中使用的“系统”和“网络”这样的用语可以互换使用。
在本说明书中，“基站(BS，Base Station)”、“无线基站”、“eNB”、“gNB”、“小区”、“扇区”、“小区组”、“载波”以及“分量载波”这样的用语可以互换使用。基站有时也以固定台(fixed station)、NodeB、eNodeB(eNB)、接入点(access point)、发送点、接收点、毫微微小区、小小区等用语来称呼。
基站可以容纳一个或多个(例如三个)小区(也称为扇区)。当基站容纳多个小区时，基站的整个覆盖区域可以划分为多个更小的区域，每个更小的区域也可以通过基站子系统(例如，室内用小型基站(射频拉远头(RRH，Remote Radio Head)))来提供通信服务。“小区”或“扇区”这样的用语是指在该覆盖中进行通信服务的基站和/或基站子系统的覆盖区域的一部分或整体。
在本说明书中，“移动台(MS，Mobile Station)”、“用户终端(user terminal)”、“用户装置(UE，User Equipment)”以及“终端”这样的用语可以互换使用。基站有时也以固定台(fixed station)、NodeB、eNodeB(eNB)、接入点(access point)、发送点、接收点、毫微微小区、小小区等用语来称呼。
移动台有时也被本领域技术人员以用户台、移动单元、用户单元、无线单元、远程单元、移动设备、无线设备、无线通信设备、远程设备、移动用 户台、接入终端、移动终端、无线终端、远程终端、手持机、用户代理、移动客户端、客户端或者若干其它适当的用语来称呼。
此外，本说明书中的无线基站也可以用用户终端来替换。例如，对于将无线基站和用户终端间的通信替换为多个用户终端间(D2D，Device-to-Device)的通信的结构，也可以应用本发明的各方式/实施方式。此时，可以将上述的无线基站10所具有的功能当作用户终端20所具有的功能。此外，“上行”和“下行”等文字也可以替换为“侧”。例如，上行信道也可以替换为侧信道。
同样，本说明书中的用户终端也可以用无线基站来替换。此时，可以将上述的用户终端20所具有的功能当作无线基站10所具有的功能。
在本说明书中，设为通过基站进行的特定动作根据情况有时也通过其上级节点(upper node)来进行。显然，在具有基站的由一个或多个网络节点(network nodes)构成的网络中，为了与终端间的通信而进行的各种各样的动作可以通过基站、除基站之外的一个以上的网络节点(可以考虑例如移动管理实体(MME，Mobility Management Entity)、服务网关(S-GW，Serving-Gateway)等，但不限于此)、或者它们的组合来进行。
本说明书中说明的各方式/实施方式可以单独使用，也可以组合使用，还可以在执行过程中进行切换来使用。此外，本说明书中说明的各方式/实施方式的处理步骤、序列、流程图等只要没有矛盾，就可以更换顺序。例如，关于本说明书中说明的方法，以示例性的顺序给出了各种各样的步骤单元，而并不限定于给出的特定顺序。
本说明书中说明的各方式/实施方式可以应用于利用长期演进(LTE，Long Term Evolution)、高级长期演进(LTE-A，LTE-Advanced)、超越长期演进(LTE-B，LTE-Beyond)、超级第3代移动通信系统(SUPER 3G)、高级国际移动通信(IMT-Advanced)、第4代移动通信系统(4G，4th generation mobile communication system)、第5代移动通信系统(5G，5th generation mobile communication system)、未来无线接入(FRA，Future Radio Access)、新无线接入技术(New-RAT，Radio Access Technology)、新无线(NR，New Radio)、新无线接入(NX，New radio access)、新一代无线接入(FX，Future generation radio access)、全球移动通信系统(GSM(注册商标)，Global System for Mobile communications)、码分多址接入2000(CDMA2000)、超级移动 宽带(UMB，Ultra Mobile Broadband)、IEEE 802.11(Wi-Fi(注册商标))、IEEE 802.16(WiMAX(注册商标))、IEEE 802.20、超宽带(UWB，Ultra-WideBand)、蓝牙(Bluetooth(注册商标))、其它适当的无线通信方法的系统和/或基于它们而扩展的下一代系统。
本说明书中使用的“根据”这样的记载，只要未在其它段落中明确记载，则并不意味着“仅根据”。换言之，“根据”这样的记载是指“仅根据”和“至少根据”这两者。
本说明书中使用的对使用“第一”、“第二”等名称的单元的任何参照，均非全面限定这些单元的数量或顺序。这些名称可以作为区别两个以上单元的便利方法而在本说明书中使用。因此，第一单元和第二单元的参照并不意味着仅可采用两个单元或者第一单元必须以若干形式占先于第二单元。
本说明书中使用的“判断(确定)(determining)”这样的用语有时包含多种多样的动作。例如，关于“判断(确定)”，可以将计算(calculating)、推算(computing)、处理(processing)、推导(deriving)、调查(investigating)、搜索(looking up)(例如表、数据库、或其它数据结构中的搜索)、确认(ascertaining)等视为是进行“判断(确定)”。此外，关于“判断(确定)”，也可以将接收(receiving)(例如接收信息)、发送(transmitting)(例如发送信息)、输入(input)、输出(output)、存取(accessing)(例如存取内存中的数据)等视为是进行“判断(确定)”。此外，关于“判断(确定)”，还可以将解决(resolving)、选择(selecting)、选定(choosing)、建立(establishing)、比较(comparing)等视为是进行“判断(确定)”。也就是说，关于“判断(确定)”，可以将若干动作视为是进行“判断(确定)”。
本说明书中使用的“连接的(connected)”、“结合的(coupled)”这样的用语或者它们的任何变形是指两个或两个以上单元间的直接的或间接的任何连接或结合，可以包括以下情况：在相互“连接”或“结合”的两个单元间，存在一个或一个以上的中间单元。单元间的结合或连接可以是物理上的，也可以是逻辑上的，或者还可以是两者的组合。例如，“连接”也可以替换为“接入”。在本说明书中使用时，可以认为两个单元是通过使用一个或一个以上的电线、线缆、和/或印刷电气连接，以及作为若干非限定性且非穷尽性的示例，通过使用具有射频区域、微波区域、和/或光(可见光及不可见光这两者)区域的波长的电磁能等，被相互“连接”或“结合”。
在本说明书或权利要求书中使用“包括(including)”、“包含(comprising)”、以及它们的变形时，这些用语与用语“具备”同样是开放式的。进一步地，在本说明书或权利要求书中使用的用语“或(or)”并非是异或。
以上对本发明进行了详细说明，但对于本领域技术人员而言，显然，本发明并非限定于本说明书中说明的实施方式。本发明在不脱离由权利要求书的记载所确定的本发明的宗旨和范围的前提下，可以作为修改和变更方式来实施。因此，本说明书的记载是以示例说明为目的，对本发明而言并非具有任何限制性的意义。

Claims (27)

  1. 一种用于用户设备的数据发送方法，包括：
    以初始重发次数向所述基站发送上行链路数据；
    在预定间隔内判断是否从所述基站接收上行链路数据的确认信号，
    其中，在所述预定间隔内接收到所述确认信号的情况下，停止发送所述上行链路数据；以及
    在所述预定间隔内没有接收到所述确认信号的情况下，以后续重发模式向所述基站发送上行链路数据，直到从所述基站接收到所述确认信号，或者达到最大重发次数。
  2. 如权利要求1所述的数据发送方法，还包括：
    在以初始重发次数向所述基站发送上行链路数据之前，确定上行链路数据的最大重发次数，
    其中，
    从所述基站接收的上行授权信号向用户设备指示上行链路数据的最大重发次数；或者
    所述用户设备基于与所述基站之间通信的测量结果，确定所述最大重发次数。
  3. 如权利要求1所述的数据发送方法，其中，以后续重发模式向所述基站发送上行链路数据包括：
    重复以多个后续重发次数向所述基站发送上行链路数据，
    其中，每次在以所述多个后续重发次数中的一个重发次数向所述基站发送上行链路数据之后，在所述预定间隔内判断是否从所述基站接收上行链路数据的确认信号。
  4. 如权利要求3所述的数据发送方法，其中，基于所述最大重发次数，选择所述最大重发次数的上一级重发次数作为所述初始重发次数和后续重发次数。
  5. 如权利要求3所述的数据发送方法，其中，所述多个后续重发次数的每一个为等于所述初始重发次数的第一重发次数模式，或者所述多个后续重发次数的每一个大于或小于所述初始重发次数的第二重发次数模式，
    并且基于来自所述基站的指示，在所述第一重发次数模式和所述第二重 发次数模式之间切换。
  6. 如权利要求2所述的数据发送方法，其中，
    在所述最大重发次数小于等于预定阈值的情况下，所述初始重发次数等于所述最大重发次数，并且
    在所述最大重发次数大于预定阈值的情况下，所述初始重发次数为所述最大重发次数的预定比例。
  7. 如权利要求1所述的数据发送方法，其中，所述预定间隔的长度对应于所述用户设备所需的信道切换和信号解码时间，并且
    所述预定间隔的长度、所述初始重发次数和所述多个后续重发次数在所述基站的系统信息块或所述用户设备的无线资源控制信令中指示，或者根据所有所述最大重发次数可能，预先确定。
  8. 如权利要求1所述的数据发送方法，还包括：
    在所述预定间隔内接收到不确认信号的情况下，以后续重发模式向所述基站发送上行链路数据，直到从所述基站接收到所述确认信号，或者达到所述最大重发次数。
  9. 如权利要求1所述的数据发送方法，还包括：
    在所述预定间隔内接收到不确认信号的情况下，确定所述不确认信号指示的后续重发模式，以及
    以所述不确认信号指示的所述后续重发模式向所述基站发送上行链路数据，直到从所述基站接收到所述确认信号，或者达到所述最大重发次数。
  10. 如权利要求1所述的数据发送方法，其中，由所述基站基于接收到的所述上行链路数据的信息，生成确认信号和不确认信号，所述确认信号和不确认信号在与上行授权信号相同信道上或者以下行控制信息格式或者在预定物理信道中传输。
  11. 一种用于基站的数据接收方法，包括：
    接收以初始重发次数从所述用户设备发送的上行链路数据；
    在预定间隔内判断是否从所述用户设备正确接收所述上行链路数据，
    在确定正确接收所述上行链路数据的情况下，向所述用户设备发送确认信号。
  12. 如权利要求11所述的数据接收方法，还包括：
    在接收以初始重发次数从所述用户设备发送的上行链路数据之前，确定 上行链路数据的最大重发次数，
    其中，发送上行授权信号向所述用户设备指示上行链路数据的最大重发次数，或者所述用户设备基于与所述基站之间通信的测量结果，确定所述最大重发次数。
  13. 如权利要求11所述的数据接收方法，还包括：
    在确定没有正确接收所述上行链路数据的情况下，向所述用户设备发送不确认信号，
    其中，基于接收到的所述上行链路数据的信息，生成所述确认信号和所述不确认信号，并且所述不确认信号能够用于指示所述用户设备的后续重发模式。
  14. 如权利要求11所述的数据接收方法，还包括：
    在确定没有正确接收所述上行链路数据的情况下，接收以后续重发模式从所述用户设备发送上行链路数据，直到确定正确接收所述上行链路数据，或者达到所述最大重发次数。
  15. 如权利要求11到14的任一项所述的数据接收方法，其中，所述预定间隔的长度对应于所述用户设备所需的信道切换和信号解码时间，并且
    所述基站经由系统信息块或所述用户设备的无线资源控制信令指示所述预定间隔的长度、所述初始重发次数和所述多个后续重发次数，或者对于所述最大重发次数预先确定所述预定间隔的长度、所述初始重发次数和所述多个后续重发次数。
  16. 一种用户设备，包括：
    接收单元，用于从基站接收信号；
    发送单元，用于以初始重发次数向所述基站发送上行链路数据；以及
    重发控制单元，用于在预定间隔内判断是否从所述基站接收上行链路数据的确认信号，
    其中，在所述预定间隔内接收到所述确认信号的情况下，所述重发控制单元控制所述发送单元停止发送所述上行链路数据；以及
    在所述预定间隔内没有接收到所述确认信号的情况下，所述重发控制单元控制所述发送单元以后续重发模式向所述基站发送上行链路数据，直到从所述基站接收到所述确认信号，或者达到最大重发次数。
  17. 如权利要求16所述的用户设备，其中所述重发控制单元还用于在 以初始重发次数向所述基站发送上行链路数据之前，确定上行链路数据的最大重发次数，
    其中，
    经由所述接收单元从所述基站接收的上行授权信号向用户设备指示上行链路数据的最大重发次数；或者
    基于所述用户设备与所述基站之间通信的测量结果，确定所述最大重发次数。
  18. 如权利要求16所述的用户设备，其中，在所述预定间隔内没有接收到所述确认信号的情况下，所述重发控制单元控制所述发送单元重复以多个后续重发次数向所述基站发送上行链路数据，
    其中，每次在以所述多个后续重发次数中的一个重发次数向所述基站发送上行链路数据之后，所述重发控制单元在所述预定间隔内判断是否从所述基站接收上行链路数据的确认信号。
  19. 如权利要求16所述的用户设备，其中，在所述预定间隔内接收到不确认信号的情况下，所述重发控制单元控制所述发送单元以后续重发模式向所述基站发送上行链路数据，直到从所述基站接收到所述确认信号，或者达到所述最大重发次数。
  20. 如权利要求16所述的用户设备，其中，在所述预定间隔内接收到不确认信号的情况下，所述重发控制单元确定所述不确认信号指示的所述后续重发模式，并且以控制所述发送单元所述不确认信号指示的所述后续重发模式向所述基站发送上行链路数据，直到从所述基站接收到所述确认信号，或者达到所述最大重发次数。
  21. 如权利要求16所述的用户设备，其中，所述重发控制单元基于所述最大重发次数，选择所述最大重发次数的上一级重发次数作为所述初始重发次数和后续重发次数。
  22. 如权利要求16到21的任一项所述的用户设备，其中，所述接收单元在与所述上行授权信号相同信道上或者以下行控制信息格式或者在预定物理信道中接收所述确认信号和所述不确认信号。
  23. 一种基站，包括：
    发送单元，用于向用户设备发送信号；
    接收单元，用于接收以初始重发次数从所述用户设备发送的上行链路数 据；以及
    接收控制单元，用于在预定间隔内判断是否从所述用户设备正确接收所述上行链路数据，
    在确定正确接收所述上行链路数据的情况下，所述接收控制单元控制所述发送单元向所述用户设备发送确认信号。
  24. 如权利要求23的所述的基站，其中从所述用户设备接收上行链路数据之前，确定上行链路数据的最大重发次数，
    其中，
    通过所述发送单元发送上行授权信号向用户设备指示上行链路数据的最大重发次数；或者
    所述用户设备基于与所述基站之间通信的测量结果，确定所述最大重发次数。
  25. 如权利要求23所述的基站，其中，
    在确定没有正确接收所述上行链路数据的情况下，所述接收控制单元控制所述发送单元向所述用户设备发送不确认信号，
    其中，所述接收控制单元基于接收到的所述上行链路数据的信息，生成所述确认信号和所述不确认信号，并且所述不确认信号能够用于指示所述用户设备的后续重发模式。
  26. 如权利要求23所述的基站，其中，
    在确定没有正确接收所述上行链路数据的情况下，所述接收单元接收以后续重发模式从所述用户设备发送上行链路数据，直到所述接收控制单元确定正确接收所述上行链路数据，或者达到所述最大重发次数。
  27. 如权利要求23到26的任一项所述的基站，其中，所述预定间隔的长度对应于所述用户设备所需的信道切换和信号解码时间，并且
    所述发送单元经由系统信息块或所述用户设备的无线资源控制信令指示所述预定间隔的长度、所述初始重发次数和所述多个后续重发次数，或者对于所述最大重发次数预先确定所述预定间隔的长度、所述初始重发次数和所述多个后续重发次数。
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