WO2018171504A1 - 数据传输的方法和装置 - Google Patents

数据传输的方法和装置 Download PDF

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Publication number
WO2018171504A1
WO2018171504A1 PCT/CN2018/079138 CN2018079138W WO2018171504A1 WO 2018171504 A1 WO2018171504 A1 WO 2018171504A1 CN 2018079138 W CN2018079138 W CN 2018079138W WO 2018171504 A1 WO2018171504 A1 WO 2018171504A1
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WIPO (PCT)
Prior art keywords
feedback information
terminal device
data
resource
network device
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PCT/CN2018/079138
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English (en)
French (fr)
Inventor
夏金环
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华为技术有限公司
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Publication of WO2018171504A1 publication Critical patent/WO2018171504A1/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria

Definitions

  • the present application relates to the field of communications, and in particular, to a method and apparatus for data transmission in the field of wireless communications.
  • the grant-free scheme is a communication method for transmitting data to a network device without the terminal device migrating to the connected state.
  • the terminal device needs to send data
  • the data and the identifier of the terminal device are directly sent to the network device, and the network device After correctly detecting the signal sent by the terminal device, the data and the identifier of the terminal device are obtained.
  • the network device After detecting the signal sent by the terminal device, the network device needs to send feedback information to the terminal device, so that the terminal device performs subsequent processing according to the feedback information. When there are more terminal devices that send data in an access slot, the network device sends feedback information. There are also many, the terminal device needs to determine the feedback message belonging to itself from a large amount of feedback information, thereby causing the terminal device to increase the complexity of receiving the feedback information.
  • the present application provides a method and apparatus for data transmission, which can reduce the complexity of receiving feedback information by a terminal device.
  • a method for data transmission comprising: a first terminal device receiving a feedback information set from a network device, the feedback information set including at least one feedback information; the first terminal device The first feedback information is determined in the set of feedback information, wherein the location information is used to indicate a location of the first feedback information in the feedback information set, and the location information is that the first terminal device is according to the first
  • the first resource is used by the first terminal device to send first data to the network device, and the first feedback information is feedback information of the first data.
  • the first terminal device selects a first resource for transmitting the first data from the set of candidate resources, and according to the location of the first resource in the candidate resource set, from the received feedback information set. Determining the feedback information of the first data, the first terminal device may determine the feedback information of the first data from the feedback information set without using the identifier or the indication information, thereby reducing the complexity of receiving the feedback information by the first terminal device.
  • the method further includes: the first terminal device sends second data to the network device by using the first resource, where the second data is retransmitted data, the second data is The first data corresponds to the same information block.
  • the network device directly detects the second data on the first resource, and does not need to detect all the resources that may be used by the first terminal device, thereby reducing the complexity of receiving the retransmitted data by the network device.
  • the feedback information set includes a plurality of feedback information subsets
  • the first terminal device receives the feedback information set from the network device, where the first terminal device is from the network device by using multiple time slots.
  • Receiving the plurality of feedback information subsets, the plurality of time periods are in one-to-one correspondence with the plurality of feedback information subsets.
  • the first terminal device receives a plurality of feedback information subsets from the network device by using a plurality of time periods, so that the difficulty of the link adaptive adjustment of the first terminal device receiving the feedback information set can be reduced.
  • the method further includes: the first terminal device receives first indication information from the network device, where the first indication information is used to indicate the candidate resource set.
  • the network device can flexibly select the transmission mode of the terminal device to improve resource utilization.
  • the method further includes: the first terminal device receives second indication information from the network device, where the second indication information is used to indicate a second resource, where the second resource is used by the first A terminal device sends data.
  • the network device can flexibly select the transmission mode of the terminal device, and improve the success rate of data transmission.
  • the method further includes: receiving, by the first terminal device, the first quantity information from the network device, where the first quantity information is used to indicate a maximum number of locations occupied by the terminal device in the first set, where The first set includes the first terminal device; when the number of locations occupied by the terminal device in the first set is greater than or equal to the maximum number, and the first terminal device is in the first set The first set is exited when the location in the first set satisfies an exit condition.
  • the network device can flexibly determine the transmission mode of the terminal device in the first set according to actual conditions, thereby improving resource utilization and ensuring reliability of data transmission.
  • a method for data transmission comprising: generating, by a network device, first feedback information; the network device sending a feedback information set to the first terminal device, where the feedback information set includes the first feedback Information, where the location of the first feedback information in the feedback information set corresponds to a location of the first resource in the candidate resource set, and the first resource is used by the first terminal device to send the first data.
  • the first feedback information is feedback information of the first data.
  • the network device sends the feedback information of the first data to the first terminal device according to the location of the first resource in the candidate resource set, where the feedback information of the first data is in the feedback information set
  • the first terminal device can determine the feedback information of the first data from the feedback information set without using the identifier or the indication information, thereby reducing the complexity of receiving the feedback information by the first terminal device. degree.
  • the method further includes: the network device receiving second data from the first terminal device by using the first resource, where the second data is retransmitted data, the second data is The first data corresponds to the same information block.
  • the network device directly detects the second data on the first resource, and does not need to detect all the resources that may be used by the first terminal device, thereby reducing the complexity of receiving the retransmitted data by the network device.
  • the feedback information set includes a plurality of feedback information subsets
  • the network device sends the feedback information set, where the network device sends the multiple feedback information subsets by using multiple time periods, the multiple The time period is in one-to-one correspondence with the plurality of feedback information subsets.
  • the network device sends a plurality of feedback information subsets to the first terminal device by using a plurality of time periods, thereby reducing the difficulty of the link adaptive adjustment of the network device sending the feedback information set, and The difficulty of selecting a resource when a small network device sends a feedback information set.
  • the method further includes: the network device sending first indication information to the first terminal device, where the first indication information is used to indicate the candidate resource set.
  • the network device can flexibly select the transmission mode of the terminal device to improve resource utilization.
  • the method further includes: the network device sending second indication information to the first terminal device, where the second indication information is used to indicate a second resource, where the second resource is used by the method A terminal device sends data.
  • the network device can flexibly select the transmission mode of the terminal device, and improve the success rate of data transmission.
  • the method further includes: the network device sends a first quantity information, where the first quantity information is used to indicate a maximum number of locations occupied by the terminal device in the first set, to facilitate the first terminal device. Exiting the first set when the number of locations occupied by the terminal device in the first set is greater than or equal to the quantity threshold, and when the location of the first terminal device in the first set satisfies an exit condition .
  • the network device can flexibly determine the transmission mode of the terminal device in the first set according to actual conditions, thereby improving resource utilization and ensuring reliability of data transmission.
  • the application provides a device for data transmission, which can implement the functions performed by the first terminal device in the method related to the foregoing aspects, and the functions can be implemented by hardware, or the corresponding software can be executed by hardware.
  • the hardware or software includes one or more corresponding units or modules of the above functions.
  • the apparatus includes a processor and a transceiver configured to support the apparatus to perform the corresponding functions of the above methods.
  • the transceiver is used to support communication between the device and other network elements.
  • the apparatus can also include a memory for coupling with the processor that retains the program instructions and data necessary for the apparatus.
  • the present application provides a device for data transmission, which can implement the functions performed by the network device in the method related to the above aspects, and the functions can be implemented by hardware or by executing corresponding software by hardware.
  • the hardware or software includes one or more corresponding units or modules of the above functions.
  • the apparatus includes a processor and a transceiver configured to support the apparatus to perform the corresponding functions of the above methods.
  • the transceiver is used to support communication between the device and other network elements.
  • the apparatus can also include a memory for coupling with the processor that retains the program instructions and data necessary for the apparatus.
  • a computer program product comprising: computer program code, when the computer program code is run by a communication unit, a processing unit or a transceiver of a terminal device, or a processor, such that The terminal device performs the method in the above implementation manner.
  • a computer program product comprising: computer program code, causing a network device when the computer program code is run by a communication unit, a processing unit or a transceiver of a network device, a processor Perform the method in the above implementation.
  • the present application provides a computer storage medium for storing computer software instructions for use in the first terminal device described above, including a program designed to perform the above aspects.
  • the present application provides a computer storage medium for storing computer software instructions for use in the network device described above, including a program designed to perform the above aspects.
  • FIG. 1 is a schematic architectural diagram of a communication system to which the present application is applied;
  • FIG. 2 is a schematic flowchart of a method for resource selection provided by the present application
  • FIG. 3 is a schematic flowchart of another method for resource selection provided by the present application.
  • FIG. 5 is a schematic diagram of a format of feedback information provided by the present application.
  • FIG. 6 is a schematic diagram of another format of feedback information provided by the present application.
  • FIG. 7 is a schematic flowchart of another method for data transmission provided by the present application.
  • FIG. 8 is a schematic flowchart of still another method for data transmission provided by the present application.
  • FIG. 10 is a schematic structural diagram of a possible first terminal device provided by the present application.
  • FIG. 11 is a schematic structural diagram of another possible first terminal device provided by the present application.
  • FIG. 12 is a schematic structural diagram of a possible network device provided by the present application.
  • FIG. 13 is a schematic structural diagram of another possible network device provided by the present application.
  • FIG. 1 illustrates a communication system 100 to which the present application is applied.
  • the communication system 100 includes a network device 110 and a terminal device 120.
  • the network device 110 and the terminal device 120 communicate through a wireless network.
  • the wireless communication module can encode the information for transmission.
  • the wireless communication module can acquire a certain number of data bits to be transmitted over the channel to the network device 110, such as data bits generated by the processing module, received from other devices, or saved in the storage module.
  • These data bits may be included in one or more transport blocks (which may also be referred to as information blocks), which may be segmented to produce a plurality of coded blocks.
  • a terminal device may be referred to as an access terminal, a user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, and a wireless device.
  • Communication device user agent or user device.
  • the access terminal can be a cellular telephone, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, and a user device in a 5th-Generation (5G) system. .
  • 5G 5th-Generation
  • the network device may be a base transceiver station (BTS) in a code division multiple access (CDMA) system, or may be a base station in a wideband code division multiple access (WCDMA) system (
  • the node B, NB) may also be an evolved base station (eNB) in a long term evolution (LTE) system, or may be a base station (gNB) in a 5G system, and the foregoing base station is only an example.
  • the network device can also be a relay station, an access point, an in-vehicle device, a wearable device, and other types of devices.
  • multiple cells can work at the same frequency at the same time.
  • the concept of a carrier and a cell can also be considered equivalent.
  • CA carrier aggregation
  • the carrier index of the secondary carrier and the cell identifier of the secondary cell operating in the secondary carrier are simultaneously carried.
  • the carrier can be considered to be equivalent to the concept of a cell, for example, the terminal device accessing one carrier and accessing one cell are equivalent.
  • the communication system to which the present application is applied is merely an example.
  • the communication system to which the present application is applied is not limited thereto.
  • the number of network devices and terminal devices included in the communication system may be other numbers.
  • the unscheduled transmission can be understood as any meaning of the following meanings, or multiple meanings, or a combination of some of the various technical features or other similar meanings:
  • the unscheduled transmission may be: the network device pre-allocates and informs the terminal device of multiple transmission resources; when the terminal device has an uplink data transmission requirement, select at least one transmission resource from the plurality of transmission resources pre-allocated by the network device, and use the selected transmission.
  • the resource sends uplink data; the network device detects uplink data sent by the terminal device on one or more of the pre-assigned multiple transmission resources.
  • the detection may be blind detection, or may be performed according to one of the control domains in the uplink data, or may be detected in other manners.
  • the unscheduled transmission may be: the network device pre-allocates and informs the terminal device of multiple transmission resources, so that when the terminal device has an uplink data transmission requirement, at least one transmission resource is selected from a plurality of transmission resources pre-allocated by the network device, and the selected one is used.
  • the transmission resource sends uplink data.
  • the unscheduled transmission may be: acquiring information of a plurality of pre-assigned transmission resources, selecting at least one transmission resource from the plurality of transmission resources when the uplink data transmission request is required, and transmitting the uplink data by using the selected transmission resource.
  • the method of obtaining can be obtained from a network device.
  • the unscheduled transmission may refer to a method for implementing uplink data transmission of the terminal device without dynamic scheduling of the network device, where the dynamic scheduling may refer to that the network device indicates the transmission resource by signaling for each uplink data transmission of the terminal device.
  • implementing uplink data transmission of the terminal device may be understood as allowing data of two or more terminal devices to perform uplink data transmission on the same time-frequency resource.
  • the transmission resource may be a transmission resource of one or more transmission time units after the time when the terminal device receives the signaling.
  • a transmission time unit may refer to a minimum time unit of one transmission, such as a transmission time interval (TTI).
  • the unscheduled transmission may refer to: the terminal device performs uplink data transmission without requiring network device scheduling.
  • the scheduling may be performed by the terminal device sending an uplink scheduling request to the network device, and after receiving the scheduling request, the network device sends an uplink grant to the terminal device, where the uplink grant indicates an uplink transmission resource allocated to the terminal device.
  • the unscheduled transmission may be a competitive transmission mode. Specifically, multiple terminals may simultaneously perform uplink data transmission on the same time-frequency resources allocated in advance without performing scheduling by the base station.
  • the data may be service data or signaling data.
  • the blind detection can be understood as the detection of data that may arrive without predicting whether or not data has arrived.
  • the blind detection can also be understood as detection without explicit signaling indication.
  • the basic time unit of the unscheduled transmission may be a TTI (eg, including a short transmission time interval (sTTI)).
  • TTI eg, including a short transmission time interval (sTTI)
  • the unscheduled transmission may include downlink data channel reception or uplink data channel transmission with a TTI length of 1 millisecond (ms) or a TTI length of less than 1 ms.
  • the time-frequency resource used by the network device and the terminal device to transmit information may be a time-frequency resource used based on a contention mechanism, or may be a time-frequency resource used based on a non-competitive mechanism, where The time-frequency resource, the terminal device can detect whether a certain time-frequency resource is currently in an idle state, or whether the time-frequency resource is used by another device, if the time-frequency resource is in an idle state, or the time-frequency resource is not otherwise When the device is used, the terminal device can use the time-frequency resource for communication, for example, performing uplink transmission, etc.; if the time-frequency resource is not in an idle state, or the time-frequency resource is used by another device, the terminal device cannot use the terminal device.
  • the time-frequency resource may be similar to the prior art. Here, in order to avoid redundancy, detailed description thereof is omitted.
  • the time-frequency resource used by the communication system 100 may be a licensed time-frequency resource or an unlicensed time-frequency resource.
  • each communication device for example, a network device or a terminal device
  • the resources used by the network device and the terminal device to transmit information may be divided into multiple time units in the time domain, and the multiple time units may be continuous or some adjacent time units. There is a preset interval between them, which is not limited in this application.
  • the length of a time unit can be arbitrarily set, which is not limited in this application.
  • one time unit may include one or more subframes.
  • one time unit may include one or more slots or mini-slots.
  • one time unit may include one or more time domain symbols.
  • one time unit may include one or more TTIs or sTTIs.
  • the length of one time unit is 1 ms.
  • the length of one time unit is less than 1 ms.
  • TTI is a time parameter commonly used in existing communication systems, and is a time unit for scheduling data in a communication system.
  • the length of one TTI is 1 ms, which corresponds to the length of time of one sub-frame, that is, the length of time of two slots.
  • the transmission of data may be based on network device scheduling, and the scheduled basic time unit is one or more minimum time scheduling units, wherein the minimum time scheduling unit may be the above TTI, or may be the above sTTI.
  • the specific scheduling procedure is that the base station sends a control channel, for example, a physical downlink control channel (PDCCH) or an enhanced physical downlink control channel (EPDCCH) or a physical downlink control channel for scheduling sTTI transmission.
  • the sTTI physical downlink control channel (sPDCCH) the control channel may be configured to use a downlink control information (DCI) format for scheduling a physical downlink shared channel (PDSCH) or a physical uplink shared channel.
  • DCI downlink control information
  • Scheduling information of a physical uplink shared channel includes control information such as resource allocation information and a modulation and coding scheme.
  • the terminal device detects the control channel, and performs downlink data channel reception or uplink data channel transmission according to the detected scheduling information carried in the control channel.
  • the present application does not limit the spectrum resources used by the communication system 100, and may be an authorized spectrum, or an unlicensed spectrum, or other shared spectrum.
  • the target resource when the terminal device transmits data in a scheduling-free manner, the target resource may be selected from the candidate resource set for data transmission.
  • the candidate resource set may include optional resources of different dimensions, for example:
  • the candidate resource set includes a fixed time domain resource, an optional frequency domain resource, and an optional code domain resource;
  • the candidate resource set includes a fixed frequency domain resource, an optional time domain resource, and an optional code domain resource;
  • the candidate resource set includes a fixed code domain resource, an optional time domain resource, and an optional frequency domain resource;
  • the candidate resource set includes an optional time domain resource, an optional frequency domain resource, and an optional code domain resource.
  • the candidate resource set may also include an optional resource of a single dimension, for example:
  • the candidate resource set includes a fixed time domain resource, a fixed frequency domain resource, and an optional code domain resource; or
  • the candidate resource set includes a fixed time domain resource, an optional frequency domain resource, and a fixed code domain resource; or
  • the candidate resource set includes an optional time domain resource, a fixed frequency domain resource, and a fixed code domain resource.
  • FIG. 2 is a schematic flowchart of a method for resource selection provided by the present application.
  • each random access slot occupies limited time domain resources and frequency domain resources.
  • each RA slot can correspond to one time slot (or mini-slot or sub-port). frame).
  • the RA slot in FIG. 2 is only an example.
  • Each RA slot is an access time unit. The length of the access time unit is not limited in this application.
  • Each solid line box corresponding to the RA slot (ie, the first row) in FIG. 2 represents a code domain resource, and the code domain resource is, for example, a reference signal, and three solid line boxes in the same RA slot represent three.
  • the code domain resource is, for example, a reference signal
  • three solid line boxes in the same RA slot represent three.
  • a different reference signal, these three reference signals may be mutually orthogonal reference signals.
  • D1 to d7 represent 7 terminal devices, and the number in each solid line box indicates the number of terminal devices using the reference signal. For example, in RA slot1, the number in the first solid line box is 4, indicating The four terminal devices d1, d2, d3, and d4 use the reference signals corresponding to the solid line blocks.
  • the order of the terminal devices in the data contention transmission queue may be, for example, sequentially arranged, that is, the terminal devices ranked at the head of the queue first transmit data, and the terminal devices ranked at the end of the queue finally transmit data.
  • the arrows on either side of each DCTQ indicate the direction in which the terminal device joins the queue, that is, the terminal devices newly added to the DCTQ are queued at the end of the queue.
  • the terminal device randomly selects a reference signal among the available reference signals, and the available reference signals may be specified by a protocol or may be indicated by the network device.
  • the network device determines the state information of the feedback according to the reception condition of the data, and the reference signal corresponding to the first solid line box (referred to as short).
  • the network device cannot correctly demodulate the first reference signal, and the four terminal devices are in a collision state, therefore, the network device feedback collision (C), the second solid line
  • the reference signal corresponding to the block (referred to as the second reference signal) is only used by d5, and the network device correctly receives the data sent by d5.
  • the network device feeds back a positive acknowledgement (A) to d5; the third solid line
  • the reference signal corresponding to the frame (referred to as the third reference signal for short) is used by two devices, and the network device cannot correctly demodulate the third reference signal, that is, the two terminal devices are in a collision state, and therefore, the network device feeds back C.
  • the above feedback information is as shown by the dashed box in FIG.
  • the network device sends a feedback message after RA slot1, and the feedback message includes the foregoing status information.
  • the terminal device collision or the data transmission collision sent by the terminal device refers to the failure of the terminal device to send data on the same resource, causing the network device to fail to receive data, and does not mean that the physical entity collides.
  • multiple terminal devices transmitting data using the same resource may cause network device reception failure.
  • FIG. 2 it is assumed that each terminal device uses the same frequency domain resource, and the same reference is used by multiple terminal devices. Signaling data causes the network device to not demodulate correctly for explanation.
  • the network device determines that the length of the DCTQ is 2 according to the data corresponding to the two reference signals (the first reference signal and the third reference signal) in the RA slot 1 respectively, that is, the queue includes two positions.
  • the six terminal devices d1, d2, d3, d4, d6, and d7 determine to resend the data, according to the data corresponding to the two reference signals (the first reference signal and the third reference signal) in RA slot1.
  • Successfully receiving and determining the length of the DCTQ is 2, and determining the respective positions in the DCTQ according to the sequence numbers of the reference signals used respectively, the DCTQ is as shown in FIG. 4, and the first reference signals of d1, d2, d3, and d4 are respectively used according to the DCTQ.
  • the serial number 1 is ranked first, and d6 and d7 are successfully received in the second position according to the serial number 3 of the third reference signal used by the third reference signal and the uplink data corresponding to the second reference signal.
  • the above example is only an example, and d6 and d7 may be ranked first, first transmitted, and d1, d2, d3, and d4 are ranked second, and then transmitted.
  • Each time an RA slot is used the length of the DCTQ is automatically decremented by one, and the serial number of the terminal device in the DCTQ is automatically decremented by one.
  • the network device determines the queue length of the next time slot according to the contention result of the time slot and the queue length of the last time slot minus one.
  • the length of the DCTQ fed back by the network device after the RA slot 1 is 2 (the first length).
  • the uplink data sent by d1, d2, and d3 is not successfully received, and the network device determines to use the first reference according to the sequence number of the reference signal.
  • the terminal device of the signal first transmits data, and the terminal device that uses the second reference signal transmits data, that is, after the RA slot 2, the DCTQ needs to allocate two locations for the terminal device using the first reference signal and the second reference signal, the first The length is subtracted from 1 in RA slot2, and the result is 1 (this "1" indicates that the terminal device in the DCTQ after RA slot1 needs one access time unit after RA slot2), and the network device according to the above two positions and the The result obtained by subtracting 1 from the length determines that the length of the DCTQ fed back after RA slot 2 is 3.
  • the terminal device can also determine the respective data transmission order according to the above method, and determine the specific location in the DCTQ according to the length of the DCTQ fed back by the network device.
  • D5 determines that the DCTQ is not added after receiving the feedback message.
  • d1, d2, d3, and d4 send data to the network device, and the network device sends a feedback message after RA slot 2 according to the detection result of the data, where the network device successfully demodulates the reference signal sent by d1 and identifies d1.
  • the feedback message received by d1 is a negative acknowledgement (N);
  • d2 and d3 use the same reference signal and are in a collision state. Therefore, feedback received by d2 and d3 is received.
  • the message is C; the data sent by d4 is received correctly, so the feedback message received by d4 is A.
  • d1 determines to retransmit the data
  • d2 and d3 determine the data sent before resending
  • d1 determines d1 according to the sequence number 1 of the first reference signal used by it, and uses the second reference signal and the first
  • the terminal device of the three reference signals ie, d2, d3, d4 first transmits data, and determines the second bit of d1 located in the DCTQ after RA slot 2 according to the value 1 (the value obtained by subtracting 1 from the queue length 2 after RA slot 1).
  • d2 and d3 respectively determine that the respective data transmission order is located behind the terminal device (i.e., d1) using the first reference signal according to the sequence number 2 of the second reference signal used, and according to the value 1 (the queue length 2 after RA slot1) Subtracting the value obtained by 1) determines that d2 and d3 are located in the third position in the DCTQ after RA slot 2.
  • RA slot3 it is the turn of d6, d7 to send data.
  • the data sent by d6 and d7 are successfully received by the network device, and the feedback message received by d6 and d7 is A.
  • RA slot 4 it is the turn of d1 to send data, and the data sent by d1 in this time slot is retransmitted data. Since the network device has identified the identifier of d1, and the DCTQ stored in the network device is the same as the DCTQ stored by each terminal device, the network device can determine the retransmission time unit of d1, so that the network device can send d1 in RA slot2. The data is combined with the data sent by RA slot4 to decode, which increases the probability of successful d1 data transmission.
  • the terminal device may select a fixed reference signal, and the network device also receives retransmission data according to the fixed reference signal, thereby reducing network device Receive complexity.
  • RA slot5 it is the turn of d2 and d3 to send data.
  • the data sent by d2 and d3 are successfully received by the network device.
  • the feedback message received by d2 and d3 is A. After that, the DCTQ queues in the network device and each terminal device are empty.
  • the power ramp can be used to adjust the transmission power.
  • after one access slot refers to after the access slot and before the next access slot
  • after RA slot1 refers to after RA slot1 and Before RA slot2.
  • FIG. 3 shows a schematic flow chart of another method for resource selection provided by the present application.
  • d1 to d22 represent 22 terminal devices, and all terminal devices that need to be retransmitted are uniformly re-transmitted in a retransmission queue (RTQ), and each access time unit corresponds to one radio frame (frame).
  • Each radio frame corresponds to 4 channels, which are respectively identified as channel 1, channel 2, channel 3, and channel 4.
  • the configuration of the four channels is as shown in Table 1.
  • the rest of the text and logo have the same meaning as the text and logo in Figure 2.
  • a radio frame includes two time units that can be used to transmit data, the starting subframes of the two time units are identified as #1 and #6, respectively, and two resources are configured in the frequency domain.
  • the frequency start indexes of the two resources are f_1 and f_2, respectively. Therefore, for the terminal device, the primary access time unit has 4 selectable channels, as shown in Table 1.
  • Each channel is configured with 3 available reference signals (3 solid line blocks corresponding to each channel in FIG. 3), and the reference signal may be, for example, a preamble, a demodulation reference signal, or a random sequence.
  • d1 to d22 randomly select one available resource to transmit data from the above resources, and when different terminal devices select the same time-frequency resource and the same reference signal, the terminal device collides, such as d1. D2, d3 and d4 are shown.
  • the terminal device that has collided enters the DCTQ queue transmission, and the terminal device that receives the feedback message N enters the RTQ queue transmission.
  • the resource selection method provided by the present application provides a multi-dimensional resource for the terminal device to contend for transmission, and the terminal device can flexibly select the target resource from the candidate resource set, thereby reducing the impact of the possible deep fading on the data transmission, and obtaining Diversity gain.
  • FIG. 4 shows a schematic flow chart of a method 400 for data transmission provided by the present application.
  • the method 400 includes:
  • the first terminal device receives a feedback information set from the network device, where the feedback information set includes at least one feedback information.
  • the first terminal device determines, according to the location information, the first feedback information from the feedback information set.
  • the location information is used to indicate a location of the first feedback information in the feedback set, where the location information is determined by the first terminal device according to a location of a first resource in a candidate resource set.
  • the first resource is used by the first terminal device to send first data to the network device, and the first feedback information is feedback information of the first data.
  • the first terminal device is any one of the terminal devices that send data to the network device, and the candidate resource set is a set of resources corresponding to each access time unit, and the first resource is any one of the candidate resource sets.
  • a terminal device sends a resource of the first data to the network device. After the first terminal device selects the first resource from the candidate resource set, the first location is determined.
  • the feedback information sent by the network device to the terminal device includes the detection result of the network device for all reference signals.
  • the network device first attempts to detect a reference signal that may be used by each terminal device.
  • the network device detects that a reference signal is used by the terminal device, the network device continues to detect an uplink message corresponding to the reference signal. Therefore, in the present application, the network The detection result of the reference signal by the device includes the detection result of the uplink message corresponding to the reference signal by the network device.
  • the network device sends a feedback information set to the terminal device after each access time unit, where the feedback information set may be located, for example, in a data packet, where the feedback information set includes feedback information of the first data sent by the first terminal device. (ie, the first feedback information).
  • the first data may be initial data or retransmitted data.
  • the first terminal device After receiving the feedback information set, the first terminal device needs to determine the detection result of the first data on the network device side. For example, the network device and the first terminal device pre-arrange the ordering of all available reference signals, and the network device uses the ranking to feed back the detection result of each reference signal (for example, the detection result of each reference signal is represented by 2 bits). After receiving the feedback information set, the first terminal device determines the detection result of the reference signal from the feedback information set according to the sequence number of the reference signal used when the first terminal device sends the first data.
  • the pre-agreed may be: specified in the communication protocol, or the network device determines the order and sends it to the terminal device through the broadcast channel, system information or dedicated signaling.
  • the N usable reference signals are ordered as: reference signal 1, reference signal 2, reference signal 3, ..., reference signal N.
  • the feedback information set sent by the network device to the first terminal device includes: detection result 1, detection result 2, detection result 3, ..., detection result N. If the reference signal used by the first terminal device to send the uplink message is the reference signal 3 (that is, the sequence number of the first location is 3), the first terminal device receives the first feedback information and combines the network device to determine the uplink.
  • the detection result of the message ie, the feedback information of the first data
  • the order of the feedback information in the feedback information set may be the same as the order of the candidate resources in the candidate resource set, and the order of the feedback information in the feedback information set may also be in accordance with the preset correspondence and the candidate resource set.
  • the order of the candidate resources is corresponding, wherein the preset correspondence may be specified by a communication protocol or may be indicated by the network device.
  • the first terminal device may further determine the first feedback information from the feedback information set according to the location of the channel used for sending the first data in the multiple candidate channels.
  • FIG. 5 is a schematic diagram showing the format of a feedback information provided by the present application.
  • the format of the feedback information shown in FIG. 5 may be used, and the feedback of the resource is used.
  • the feedback information of the information and the retransmission resource can be separately encapsulated.
  • the format of the feedback information of the competitive resources is as shown in the format a.
  • Each solid line box represents one bit, and E and T are two bits included in the subheader, where E is used to indicate whether there is a subheader behind Extension, T is used to indicate the type of subheader.
  • the T domain can be extended to multiple bits, and a reserved bit R can also be set in the subheader.
  • the remaining bits in the subheader represent the feedback state of the competing resources. Three bits can be used to indicate the feedback state of one competing resource, as shown in P1, P2, P3, and P4 in FIG.
  • the format of the feedback information of the retransmitted resource is as shown in the format b, and the format b is similar to the format a.
  • the feedback state of one retransmission resource can be represented by 2 bits, as shown by D1, D2, D3, D4, D5, and D6 in FIG.
  • FIG. 6 shows a schematic diagram of another format of feedback information provided by the present application.
  • R is a reserved bit, and the meanings of the remaining respective identifiers are the same as those of the respective identifiers in FIG. 5.
  • the format of the feedback information shown in Figure 6 can be used to feedback the number of locations included in the set (for example, the length of the queue), each subhead has 5 available bits, and the length of the queue that can be represented is 32, when the queue length When it exceeds 32, you can use the following extended subheader.
  • the first terminal device selects a first resource for transmitting the first data from the set of candidate resources, and receives feedback from the location of the first resource in the candidate resource set. Determining the feedback information of the first data in the information set, the first terminal device may determine the feedback information of the first data from the feedback information set without using the identifier or the indication information, thereby reducing the complexity of receiving the feedback information by the first terminal device. degree.
  • the method 400 further includes:
  • the first terminal device sends second data to the network device by using the first resource, where the second data is retransmitted data, and the second data corresponds to the same information block as the first data.
  • the first terminal device may send the retransmission data, that is, the second data, to the network device by using the first resource.
  • the network device and the first terminal device both determine that the first terminal device sends the second data by using the resource (ie, the first resource) used to send the first data, where when the first resource is understood as a time domain resource, the foregoing
  • the sending of the second data by the resource means that the second data is sent by using the same time domain resource as the number of the time domain resource used for transmitting the first data.
  • the first resource includes a time domain resource corresponding to the start subframe #1, a frequency domain resource corresponding to the start frequency f_1, and the first reference signal, and when the second data is sent, the first terminal device still uses the initiator.
  • the time domain resource corresponding to frame #1, the frequency domain resource corresponding to the starting frequency f_1, and the first reference signal is the time domain resource corresponding to frame #1, the frequency domain resource corresponding to the starting frequency f_1, and the first reference signal.
  • both the foregoing network device and the first terminal device determine that the first terminal device sends the second data by using the first resource, that the network device and the first terminal device both determine the first terminal device according to the specification of the communication protocol or the preset information.
  • the second data is transmitted through the first resource.
  • the network device directly detects the second data on the first resource, and does not need to detect all possible resources used by the first terminal device, thereby reducing the network device receiving the retransmitted data. the complexity.
  • the feedback information set includes a plurality of feedback information subsets
  • the first terminal device receives the feedback information set from the network device, including:
  • the first terminal device receives the multiple subset of feedback information from the network device by using a plurality of time periods, where the second data corresponds to the same information block as the first data.
  • the number of terminal devices that are contending for transmission in one access time unit is large, the amount of data of the feedback information is large, which may cause the network device to select resources when sending the feedback information set, or may cause network devices and The link adaptive adjustment of a terminal device is difficult.
  • the network device may send the feedback information set in segments. For example, the network device only feeds back the contention result of the partial resources in the candidate resource set and the length of the corresponding queue at a time, and the first terminal device needs to acquire.
  • the network device can determine the state of all resources in the candidate resource set and the complete queue length after the subset of feedback information sent through multiple time periods.
  • the network device may send in a default order, such as the order of candidate resources in the candidate resource set, and the default order may also be specified by the communication protocol.
  • the first terminal device receives a plurality of feedback information subsets from the network device by using a plurality of time periods, thereby reducing the difficulty of the link adaptive adjustment of the first terminal device receiving the feedback information set.
  • the method 400 further includes:
  • the first terminal device receives first indication information from the network device, where the first indication information is used to indicate the candidate resource set.
  • the network device may instruct the first terminal device to send the uplink data in a contention manner according to the actual situation, that is, the resource in the candidate resource set is shared with other terminal devices to send the uplink data, for example, the uplink delay request is not required.
  • the network device may indicate the candidate resource set by using the first indication information, and indicate that the first terminal device sends the uplink data in a contention manner by using the contention indication information, where the first indication information may be, for example, scheduling information or a physical layer. For signaling or higher layer signaling, the first indication information and the contention indication information may be located in the same signaling.
  • the first terminal device After receiving the first indication information, the first terminal device determines the first resource from the candidate resource set.
  • the first terminal device may be transmitted in a contention-based manner before receiving the first indication information, or may be transmitted in a scheduling manner.
  • the network device can flexibly select the transmission mode of the terminal device to improve resource utilization.
  • the method 400 further includes:
  • the first terminal device receives the second indication information from the network device, where the second indication information is used to indicate the second resource, and the second resource is used by the first terminal device to send data.
  • the network device and the terminal device simultaneously maintain a set, and the terminal devices in the set send uplink data based on a contention manner, and the network device knows when the set is empty, and the set is already before the start time unit of the contention access. When it is empty, the network device can schedule the resources used for the contention competition of the terminal devices in the set to be used by other terminal devices, thereby avoiding waste of resources, and improving the reliability of data transmission of the terminal device using the foregoing resources.
  • the network device may send the second indication information to the first terminal device after the first terminal device sends the uplink data multiple times in a contention-based manner, and the first terminal device indicates the first terminal by using the scheduling information.
  • the device sends the uplink data by using the second resource, where the second resource may be a resource different from the resource in the candidate resource set, and the second resource may also be a resource with higher reliability among the candidate resource set.
  • the network device may indicate, by using the scheduling information, a transmission format of the data to be transmitted using the second resource, for example, a modulation and coding method used, and the like.
  • the scheduling information may be in the same signaling as the second indication information.
  • the network device can flexibly select the transmission mode of the terminal device, and improve the success rate of data transmission.
  • the method 400 further includes:
  • the first terminal device receives a first quantity information from the network device, where the first quantity information is used to indicate a maximum number of locations occupied by the terminal device in the first set, where the first set includes the first A terminal device.
  • the first set is exited when the condition is met.
  • the first set can be a queue or other form.
  • the terminal devices in the first set perform data transmission based on the competition. When there are too many terminal devices in the first set, the probability of collision between different terminal devices is large, resulting in a decrease in the transmission success rate.
  • a quantity threshold may be set, which is used to indicate the maximum number of locations that can be accommodated in the first set, wherein each terminal device occupies one location in the first set, in the first set Each location can accommodate at least one terminal device.
  • the preset condition may be specified by a communication protocol, or may be indicated by a network device.
  • FIG. 7 shows a schematic flow chart of another method for data transmission provided by the present application.
  • d1 to d13 are 13 terminal devices, and the meanings of the remaining characters and logos are the same as those of the characters and logos in Fig. 2.
  • the terminal device sends uplink data in a contention-based manner.
  • the contention-based manner means that the 13 terminal devices share resources in the candidate resource set.
  • the queue length that the network device can feed back can be 3, that is, only 3 positions can be reserved in the DCTQ.
  • the condition may be that the terminal devices in the first three positions in the queue are reserved, and the terminal devices in the remaining positions are out of the queue.
  • D9, d10, d11, d12, and d13 exit the DCTQ according to the queue length fed back by the network device and the respective positions in the DCTQ satisfying the preset condition.
  • FIG. 8 is a schematic flowchart of still another method for data transmission provided by the present application.
  • the terminal device transmits uplink data in a contention-based manner.
  • the length of the DCTQ fed back by the network device is 2.
  • the preset condition is that the terminal devices in the first two positions in the queue are reserved, and the terminal devices in the remaining positions are out of the queue.
  • the length of the DCTQ can be fed back to zero.
  • the terminal device after the terminal device exits the queue, it can wait for the scheduling of the network device, or can again send data based on the contention.
  • the network device can flexibly determine the transmission mode of the terminal device in the queue according to actual conditions, thereby improving resource utilization and ensuring reliability of data transmission.
  • FIG. 9 is a schematic flowchart of still another method for data transmission provided by the present application.
  • the method 900 includes:
  • the network device generates first feedback information.
  • the network device sends a feedback information set to the first terminal device, where the feedback information set includes the first feedback information
  • the location of the first feedback information in the feedback information set corresponds to the location of the first resource in the candidate resource set, and the first resource is used by the first terminal device to send the first data.
  • the first feedback information is feedback information of the first data.
  • the network device sends the feedback information of the first data to the first terminal device according to the location of the first resource in the candidate resource set, where the feedback information of the first data is in the feedback information set
  • the first terminal device can determine the feedback information of the first data from the feedback information set without using the identifier or the indication information, thereby reducing the complexity of receiving the feedback information by the first terminal device. degree.
  • the method 900 further includes:
  • the network device receives second data from the first terminal device by using the first resource, where the second data is retransmitted data, and the second data corresponds to the same information block as the first data. .
  • the network device directly detects the second data on the first resource, and does not need to detect all the resources that may be used by the first terminal device, thereby reducing the complexity of receiving the retransmitted data by the network device.
  • the feedback information set includes a plurality of feedback information subsets, and the network device sends the feedback information set, including:
  • the network device sends the multiple subsets of feedback information by using a plurality of time periods, where the multiple time periods are in one-to-one correspondence with the plurality of feedback information subsets.
  • the network device sends a plurality of feedback information subsets to the first terminal device by using a plurality of time periods, thereby reducing the difficulty of the link adaptive adjustment of the network device sending the feedback information set, and The difficulty of selecting a resource when a small network device sends a feedback information set.
  • the method 900 further includes:
  • the network device sends first indication information to the first terminal device, where the first indication information is used to indicate the candidate resource set.
  • the network device can flexibly select the transmission mode of the terminal device to improve resource utilization.
  • the method 900 further includes:
  • the network device sends second indication information to the first terminal device, where the second indication information is used to indicate a second resource, and the second resource is used by the first terminal device to send data.
  • the network device can flexibly select the transmission mode of the terminal device to improve the success rate of data transmission.
  • the method 900 further includes:
  • the network device sends a first quantity information, where the first quantity information is used to indicate a maximum number of locations occupied by the terminal device in the first set, so that the first terminal device is in the first set.
  • the number of locations occupied by the device is greater than or equal to the maximum number, and the first set is exited when the location of the first terminal device in the first set satisfies an exit condition.
  • the terminal devices in the first set perform data transmission based on the competition. When there are too many terminal devices in the first set, the probability of collision between different terminal devices is large, resulting in a decrease in the transmission success rate.
  • a quantity threshold may be set, which is used to indicate the maximum number of locations that can be accommodated in the first set, wherein each terminal device occupies one location in the first set, in the first set Each location can accommodate at least one terminal device.
  • the terminal devices in the first set When the number of locations occupied by the terminal devices in the first set is greater than or equal to the threshold, the terminal devices in the first set that meet the preset conditions exit the first set, so that the probability of collision of the terminal devices can be reduced.
  • the network device can flexibly determine the transmission mode of the terminal device in the first set according to actual conditions, thereby improving resource utilization and ensuring reliability of data transmission.
  • the terminal device and the network device include corresponding hardware structures and/or software modules for performing the respective functions in order to implement the above functions.
  • the present application can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.
  • the present application may divide a functional unit into a terminal device or the like according to the above method example.
  • each functional unit may be divided according to each function, or two or more functions may be integrated into one processing unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. It should be noted that the division of the unit in the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner.
  • FIG. 10 shows a possible structural diagram of the first terminal device involved in the above embodiment.
  • the first terminal device 1000 includes a processing unit 1002 and a communication unit 1003.
  • the processing unit 1002 is configured to control and manage the actions of the first terminal device 1000.
  • the processing unit 1002 is configured to support the first terminal device 1000 to perform S420 of FIG. 4 and/or other processes for the techniques described herein.
  • the communication unit 1003 is configured to support communication between the first terminal device 1000 and other network entities, such as communication with the network device.
  • the first terminal device 1000 may further include a storage unit 1001 for storing program codes and data of the first terminal device 1000.
  • the processing unit 1002 may be a processor or a controller, for example, may be a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit (application-specific). Integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 1003 may be a transceiver, a transceiver circuit, or the like.
  • the storage unit 1001 may be a memory.
  • the first terminal device 1000 provided by the present application selects a first resource for transmitting the first data from the set of candidate resources, and determines the first information from the received feedback information set according to the location of the first resource in the candidate resource set.
  • the feedback information of the data the first terminal device 1000 can determine the feedback information of the first data from the feedback information set without using the identifier or the indication information, thereby reducing the complexity of the first terminal device 1000 receiving the feedback information.
  • the processing unit 1002 is a processor
  • the communication unit 1003 is a transceiver
  • the storage unit 1001 is a memory
  • the first terminal device involved in the present application may be the first terminal device shown in FIG.
  • the first terminal device 1100 includes a processor 1102, a transceiver 1103, and a memory 1101.
  • the transceiver 1103, the processor 1102, and the memory 1101 can communicate with each other through an internal connection path to transfer control and/or data signals.
  • the first terminal device 1100 provided by the present application selects a first resource for transmitting the first data from the set of candidate resources, and determines the first information from the received feedback information set according to the location of the first resource in the candidate resource set.
  • the feedback information of the data the first terminal device 1100 can determine the feedback information of the first data from the feedback information set without using the identifier or the indication information, thereby reducing the complexity of the first terminal device 1100 receiving the feedback information.
  • FIG. 12 shows a possible structural diagram of the network device involved in the above embodiment.
  • the network device 1200 includes a processing unit 1202 and a communication unit 1203.
  • the processing unit 1202 is configured to control the management of the actions of the network device 1200.
  • the processing unit 1202 is configured to support the network device 1200 to perform S910 of FIG. 9 and/or other processes for the techniques described herein.
  • the communication unit 1203 is for supporting communication between the network device 1200 and other network entities, such as communication with the terminal device.
  • the network device 1200 may further include a storage unit 1201 for storing program codes and data of the network device 1200.
  • the processing unit 1202 may be a processor or a controller, such as a CPU, a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 1203 may be a transceiver, a transceiver circuit, or the like.
  • the storage unit 1201 may be a memory.
  • the network device 1200 for data transmission provided by the present application sends feedback information of the first data to the first terminal device according to the location of the first resource in the candidate resource set, where the feedback information of the first data is in the feedback information set
  • the first terminal device can determine the feedback information of the first data from the feedback information set without using the identifier or the indication information, thereby reducing the complexity of receiving the feedback information by the first terminal device. degree.
  • the network device involved in the present application may be the network device shown in FIG.
  • the network device 1300 includes a processor 1302, a transceiver 1303, and a memory 1301.
  • the transceiver 1303, the processor 1302, and the memory 1301 can communicate with each other through an internal connection path to transmit control and/or data signals.
  • the network device 1300 for data transmission provided by the present application sends feedback information of the first data to the first terminal device according to the location of the first resource in the candidate resource set, where the feedback information of the first data is in the feedback information set
  • the first terminal device can determine the feedback information of the first data from the feedback information set without using the identifier or the indication information, thereby reducing the complexity of receiving the feedback information by the first terminal device. degree.
  • the size of the sequence number of each process does not mean the order of execution sequence, and the order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the present application.
  • the steps of a method or algorithm described in connection with the present disclosure may be implemented in a hardware or may be implemented by a processor executing software instructions.
  • the software instructions may be composed of corresponding software modules, which may be stored in a random access memory (RAM), a flash memory, a read only memory (ROM), an erasable programmable read only memory ( Erasable programmable ROM (EPROM), electrically erasable programmable read only memory (EEPROM), registers, hard disk, removable hard disk, compact disk read only (CD-ROM) or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in the terminal device.
  • the processor and the storage medium can also exist as discrete components in the terminal device and the network device.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in or transmitted by a computer readable storage medium.
  • the computer instructions can be from a website site, computer, server or data center to another website site by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.) Transfer from a computer, server, or data center.
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)) or the like.

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Abstract

本申请提供了一种数据传输的方法和装置，该方法包括：该方法包括：第一终端设备从网络设备接收反馈信息集合，所述反馈信息集合包括至少一个反馈信息；所述第一终端设备根据位置信息从所述反馈信息集合中确定第一反馈信息，其中，所述位置信息用于指示所述第一反馈信息在所述反馈信息集合中的位置，所述位置信息是所述第一终端设备根据第一资源在候选资源集合中的位置确定的，所述第一资源用于所述第一终端设备向所述网络设备发送第一数据，所述第一反馈信息是所述第一数据的反馈信息。本申请提供的数据传输的方法和装置可以减小第一终端设备接收反馈信息的复杂度。

Description

数据传输的方法和装置
本申请要求于2017年03月20日提交中国专利局、申请号为201710164885.2、申请名称为“数据传输的方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，尤其涉及无线通信领域中的数据传输的方法和装置。
背景技术
免调度(grant-free)方案是一种无需终端设备迁移至连接态即可向网络设备发送数据的通信方法，终端设备需要发送数据时直接将数据和终端设备的标识发送给网络设备，网络设备正确检测终端设备发送的信号后获取数据和终端设备的标识。
网络设备在检测终端设备发送的信号后需要向终端设备发送反馈信息，以便于终端设备根据反馈信息进行后续处理，当一个接入时隙中发送数据的终端设备较多时，网络设备发送的反馈信息也较多，终端设备需要从大量反馈信息中确定属于自己的反馈消息，从而导致终端设备接收反馈信息的复杂度增大。
发明内容
有鉴于此，本申请提供了一种数据传输的方法和装置，能够减小终端设备接收反馈信息的复杂度。
一方面，提供了一种数据传输的方法，该方法包括：第一终端设备从网络设备接收反馈信息集合，所述反馈信息集合包括至少一个反馈信息；所述第一终端设备根据位置信息从所述反馈信息集合中确定第一反馈信息，其中，所述位置信息用于指示所述第一反馈信息在所述反馈信息集合中的位置，所述位置信息是所述第一终端设备根据第一资源在候选资源集合中的位置确定的，所述第一资源用于所述第一终端设备向所述网络设备发送第一数据，所述第一反馈信息是所述第一数据的反馈信息。
本申请提供的数据传输的方法，第一终端设备从候选资源集合中选择用于传输第一数据的第一资源，并根据第一资源在候选资源集合中的位置从接收到的反馈信息集合中确定该第一数据的反馈信息，第一终端设备无需通过标识或者指示信息即可从反馈信息集合中确定第一数据的反馈信息，从而减小了第一终端设备接收反馈信息的复杂度。
可选地，所述方法还包括：所述第一终端设备通过所述第一资源向所述网络设备发送第二数据，所述第二数据为重传数据，所述第二数据与所述第一数据对应相同的信息块。
根据本申请提供的数据传输的方法，网络设备直接在第一资源上检测第二数据，无需对第一终端设备所有可能使用的资源进行检测，从而可以减小网络设备接收重传数据的复杂度。
可选地，所述反馈信息集合包括多个反馈信息子集，所述第一终端设备从所述网络设备接收反馈信息集合，包括：所述第一终端设备通过多个时段从所述网络设备接收所述多个反馈信息子集，所述多个时段与所述多个反馈信息子集一一对应。
本申请提供的数据传输的方法，第一终端设备通过多个时段从网络设备接收多个反馈信息子集，从而可以减小第一终端设备接收反馈信息集合的链路自适应调节的难度。
可选地，所述方法还包括：所述第一终端设备从所述网络设备接收第一指示信息，所述第一指示信息用于指示所述候选资源集合。
根据本申请提供的数据传输的方法，网络设备可以灵活选择终端设备的传输模式，提高资源利用率。
可选地，所述方法还包括：所述第一终端设备从所述网络设备接收第二指示信息，所述第二指示信息用于指示第二资源，所述第二资源用于所述第一终端设备发送数据。
从而，网络设备可以灵活选择终端设备的传输模式，提高数据传输的成功率。
可选地，所述方法还包括：所述第一终端设备从所述网络设备接收第一数量信息，所述第一数量信息用于指示第一集合中终端设备占据的位置的最大数量，所述第一集合包括所述第一终端设备；所述第一终端设备在所述第一集合中终端设备占据的位置的数量大于或等于所述最大数量时，且在所述第一终端设备在所述第一集合中的位置满足退出条件时退出所述第一集合。
根据本申请提供的数据传输的方法，网络设备可以根据实际情况灵活确定第一集合中的终端设备的传输方式，提高了资源利用率的同时保证了数据传输的可靠性。
另一方面，提供了一种数据传输的方法，该方法包括：网络设备生成第一反馈信息；所述网络设备向第一终端设备发送反馈信息集合，所述反馈信息集合包括所述第一反馈信息，其中，所述第一反馈信息在所述反馈信息集合中的位置与第一资源在候选资源集合中的位置相对应，所述第一资源用于所述第一终端设备发送第一数据，所述第一反馈信息是所述第一数据的反馈信息。
本申请提供的数据传输的方法，网络设备根据第一资源在候选资源集合中的位置向第一终端设备发送第一数据的反馈信息，第一数据的反馈信息在反馈信息集合中的位置与第一资源在候选资源集合中的位置相对应，第一终端设备无需通过标识或者指示信息即可从反馈信息集合中确定第一数据的反馈信息，从而减小了第一终端设备接收反馈信息的复杂度。
可选地，所述方法还包括：所述网络设备通过所述第一资源从所述第一终端设备接收第二数据，所述第二数据为重传数据，所述第二数据与所述第一数据对应相同的信息块。
根据本申请提供的数据传输的方法，网络设备直接在第一资源上检测第二数据，无需对第一终端设备所有可能使用的资源进行检测，从而可以减小网络设备接收重传数据的复杂度。
可选地，所述反馈信息集合包括多个反馈信息子集，所述网络设备发送反馈信息集合，包括：所述网络设备通过多个时段发送所述多个反馈信息子集，所述多个时段与所述多个反馈信息子集一一对应。
本申请提供的数据传输的方法，网络设备通过多个时段向第一终端设备发送多个反馈信息子集，从而可以减小网络设备发送反馈信息集合的链路自适应调节的难度，并且可以 减小网络设备发送反馈信息集合时选择资源的难度。
可选地，所述方法还包括：所述网络设备向所述第一终端设备发送第一指示信息，所述第一指示信息用于指示所述候选资源集合。
根据本申请提供的数据传输的方法，网络设备可以灵活选择终端设备的传输模式，提高资源利用率。
可选地，所述方法还包括：所述网络设备向所述第一终端设备发送第二指示信息，所述第二指示信息用于指示第二资源，所述第二资源用于所述第一终端设备发送数据。
根据本申请提供的数据传输的方法，网络设备可以灵活选择终端设备的传输模式，提高数据传输的成功率。
可选地，所述方法还包括：所述网络设备发送第一数量信息，所述第一数量信息用于指示第一集合中终端设备占据的位置的最大数量，以便于所述第一终端设备在所述第一集合中终端设备占据的位置的数量大于或等于所述数量阈值时，且在所述第一终端设备在所述第一集合中的位置满足退出条件时退出所述第一集合。
根据本申请提供的数据传输的方法，网络设备可以根据实际情况灵活确定第一集合中的终端设备的传输方式，提高了资源利用率的同时保证了数据传输的可靠性。
再一方面，本申请提供了一种数据传输的装置，该装置可以实现上述方面所涉及方法中第一终端设备所执行的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个上述功能相应的单元或模块。
在一种可能的设计中，该装置的结构中包括处理器和收发器，该处理器被配置为支持该装置执行上述方法中相应的功能。该收发器用于支持该装置与其它网元之间的通信。该装置还可以包括存储器，该存储器用于与处理器耦合，其保存该装置必要的程序指令和数据。
再一方面，本申请提供了一种数据传输的装置，该装置可以实现上述方面所涉及方法中网络设备所执行的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个上述功能相应的单元或模块。
在一种可能的设计中，该装置的结构中包括处理器和收发器，该处理器被配置为支持该装置执行上述方法中相应的功能。该收发器用于支持该装置与其它网元之间的通信。该装置还可以包括存储器，该存储器用于与处理器耦合，其保存该装置必要的程序指令和数据。
再一方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码被终端设备的通信单元、处理单元或收发器、处理器运行时，使得第一终端设备执行上述实现方式中的方法。
再一方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码被网络设备的通信单元、处理单元或收发器、处理器运行时，使得网络设备执行上述实现方式中的方法。
再一方面，本申请提供了一种计算机存储介质，用于储存为上述第一终端设备所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
再一方面，本申请提供了一种计算机存储介质，用于储存为上述网络设备所用的计算机软件指令，其包含用于执行上述方面所设计的程序。
附图说明
图1是适用本申请的通信系统的示意性架构图；
图2是本申请提供的一种资源选择的方法的示意性流程图；
图3是本申请提供的另一种资源选择的方法的示意性流程图；
图4是本申请提供的一种数据传输的方法的示意性流程图；
图5是本申请提供的一种反馈信息的格式的示意图；
图6是本申请提供的另一种反馈信息的格式的示意图；
图7是本申请提供的另一种数据传输的方法的示意性流程图；
图8是本申请提供的再一种数据传输的方法的示意性流程图；
图9是本申请提供的再一种数据传输的方法的示意性流程图；
图10是本申请提供的一种可能的第一终端设备的结构示意图；
图11是本申请提供的另一种可能的第一终端设备的结构示意图；
图12是本申请提供的一种可能的网络设备的结构示意图；
图13是本申请提供的另一种可能的网络设备的结构示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
图1示出了一种适用本申请的通信系统100。该通信系统100包括网络设备110和终端设备120，网络设备110与终端设备120通过无线网络进行通信，当终端设备120发送数据时，无线通信模块可对信息进行编码以用于传输，具体地，无线通信模块可获取要通过信道发送至网络设备110的一定数目的数据比特，这些数据比特例如是处理模块生成的、从其它设备接收的或者在存储模块中保存的数据比特。这些数据比特可包含在一个或多个传输块(也可称为信息块)中，传输块可被分段以产生多个编码块。
在本申请中，终端设备可称为接入终端、用户设备(user equipment，UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备以及第五代(5th-Generation，5G)系统中的用户设备。
网络设备可以是码分多址(code division multiple access，CDMA)系统中的基站(base transceiver station，BTS)，也可以是宽带码分多址(wideband code division multiple access，WCDMA)系统中的基站(node B，NB)，还可以是长期演进(long term evolution，LTE)系统中的演进型基站(evolutional node B，eNB)，还可以是5G系统中的基站(gNB)，上述基站仅是举例说明，网络设备还可以为中继站、接入点、车载设备、可穿戴设备以及其它类型的设备。
此外，在LTE系统或5G系统中可以同时有多个小区同频工作，在某些特殊场景下，也可以认为载波与小区的概念等同。例如，在载波聚合(carrier aggregation，CA)场景下，当为终端设备配置辅载波时，会同时携带辅载波的载波索引和工作在该辅载波的辅小区的小区标识，在这种情况下，可以认为载波与小区的概念等同，比如终端设备接入一个载波 和接入一个小区是等同的。
上述适用本申请的通信系统仅是举例说明，适用本申请的通信系统不限于此，例如，通信系统中包括的网络设备和终端设备的数量还可以是其它的数量。
为了方便理解本申请，下面，对本申请可能涉及的概念做详细介绍。
免调度传输可以理解为如下含义的任意一种含义，或，多种含义，或者多种含义中的部分技术特征的组合或其他类似含义：
免调度传输可以指：网络设备预先分配并告知终端设备多个传输资源；终端设备有上行数据传输需求时，从网络设备预先分配的多个传输资源中选择至少一个传输资源，使用所选择的传输资源发送上行数据；网络设备在所述预先分配的多个传输资源中的一个或多个传输资源上检测终端设备发送的上行数据。所述检测可以是盲检测，也可能根据所述上行数据中某一个控制域进行检测，或者是其他方式进行检测。
免调度传输可以指：网络设备预先分配并告知终端设备多个传输资源，以使终端设备有上行数据传输需求时，从网络设备预先分配的多个传输资源中选择至少一个传输资源，使用所选择的传输资源发送上行数据。
免调度传输可以指：获取预先分配的多个传输资源的信息，在有上行数据传输需求时，从所述多个传输资源中选择至少一个传输资源，使用所选择的传输资源发送上行数据。获取的方式可以从网络设备获取。
免调度传输可以指：不需要网络设备动态调度即可实现终端设备的上行数据传输的方法，所述动态调度可以是指网络设备为终端设备的每次上行数据传输通过信令来指示传输资源的一种调度方式。可选地，实现终端设备的上行数据传输可以理解为允许两个或两个以上终端设备的数据在相同的时频资源上进行上行数据传输。可选地，所述传输资源可以是终端设备接收所述的信令的时刻以后的一个或多个传输时间单元的传输资源。一个传输时间单元可以是指一次传输的最小时间单元，比如传输时间间隔(transmission time interval，TTI)。
免调度传输可以指：终端设备在不需要网络设备调度的情况下进行上行数据传输。所述调度可以指终端设备发送上行调度请求给网络设备，网络设备接收调度请求后，向终端设备发送上行许可，其中所述上行许可指示分配给终端设备的上行传输资源。
免调度传输可以指：一种竞争传输方式，具体地可以指多个终端在预先分配的相同的时频资源上同时进行上行数据传输，而无需基站进行调度。
所述的数据可以为业务数据或者信令数据。
所述盲检测可以理解为在不预知是否有数据到达的情况下，对可能到达的数据进行的检测。所述盲检测也可以理解为没有显式的信令指示下的检测。
在本申请中，免调度传输的基本时间单元可以是一个TTI(例如，包括短传输时间间隔(short transmission time interval，sTTI))。当引入sTTI技术后，免调度传输可以包括在TTI长度为1毫秒(ms)或TTI长度小于1ms的下行数据信道接收或上行数据信道发送。
在本申请中，网络设备和终端设备用于传输信息的时频资源可以是基于竞争机制使用的时频资源，也可以是基于非竞争机制使用的时频资源，其中，对于基于竞争机制使用的时频资源，终端设备可以检测某一时频资源当前是否处于空闲状态，或者说，该时频资源 是否被其他设备使用，若该时频资源处于空闲状态，或者说，该时频资源未被其他设备使用，则终端设备可以使用该时频资源进行通信，例如，进行上行传输等；若该时频资源不处于空闲状态，或者说，该时频资源已被其他设备使用，则终端设备无法使用该时频资源。需要说明的是，在本申请中，上述竞争机制的具体方法和过程可以与现有技术相似，这里，为了避免赘述，省略其详细说明。
在本申请中，通信系统100所使用的时频资源(或者说，网络设备和终端设备基于竞争机制使用的时频资源)可以是许可时频资源，也可以是免许可时频资源，本申请对此不做限定。在本申请中，通信系统100中的各通信设备(例如，网络设备或终端设备)可以基于免调度传输方案使用时频资源进行通信，也可以基于调度方式使用时频资源进行通信，本申请对此不做限定。
在本申请中，网络设备和终端设备用于传输信息的资源在时域上可以划分为多个时间单元，并且，该多个时间单元可以是连续的，也可以是某些相邻的时间单元之间设有预设的间隔，本申请对此不做限定。
在本申请中，一个时间单元的长度可以任意设定，本申请对此不做限定。
例如，1个时间单元可以包括一个或多个子帧。
或者，1个时间单元可以包括一个或多个时隙(slot)或微时隙(mini-slot)。
或者，1个时间单元可以包括一个或多个时域符号。
或者，1个时间单元可以包括一个或多个TTI或sTTI。
或者，1个时间单元的长度为1ms。
或者，1个时间单元的长度小于1ms。
其中，TTI是现有通信系统中普遍使用的时间参数，是通信系统中调度数据的时间单位。在LTE系统中，1个TTI的时间长度为1ms，对应一个子帧(sub-frame)的时间长度，也就是两个时隙的时间长度。
在本申请中，数据的传输可以是基于网络设备调度的，调度的基本时间单元是一个或多个最小的时间调度单元，其中，最小的时间调度单元可以是上述的TTI，也可以是上述的sTTI。具体的调度流程是基站发送控制信道，例如，物理下行控制信道(physical downlink control channel，PDCCH)或增强物理下行控制信道(enhanced physical downlink control channel，EPDCCH)或用于调度sTTI传输的物理下行控制信道(sTTI physical downlink control channel，sPDCCH)，该控制信道可以承载使用不同的下行控制信息(downlink control information，DCI)格式的用于调度物理下行共享信道(physical downlink shared channel，PDSCH)或物理上行共享信道(physical uplink shared channel，PUSCH)的调度信息，该调度信息包括资源分配信息，调制编码方式等控制信息。终端设备检测控制信道，并根据检测出的控制信道中承载的调度信息来进行下行数据信道的接收或上行数据信道的发送。
本申请对通信系统100所使用的频谱资源不做限定，可以是授权频谱，也可以是非授权频谱，或其它共享频谱。
上文详细介绍了本申请可能涉及的概念，下面，将结合附图详细描述本申请提供的数据传输的方法和装置。
在本申请中，终端设备通过免调度方式发送数据时，可以从候选资源集合中选择目标 资源进行数据传输。
该候选资源集合可以包括不同维度的可选资源，例如：
候选资源集合包括固定的时域资源、可选的频域资源和可选的码域资源；或者，
候选资源集合包括固定的频域资源、可选的时域资源和可选的码域资源；或者，
候选资源集合包括固定的码域资源、可选的时域资源和可选的频域资源；或者，
候选资源集合包括可选的时域资源、可选的频域资源和可选的码域资源。
该候选资源集合也可以包括单一维度的可选资源，例如：
候选资源集合包括固定的时域资源、固定的频域资源和可选的码域资源；或者，
候选资源集合包括固定的时域资源、可选的频域资源和固定的码域资源；或者，
候选资源集合包括可选的时域资源、固定的频域资源和固定的码域资源。
图2示出了本申请提供的一种资源选择的方法的示意性流程图。
如图2所示，每个随机接入时隙(random access slot，RA slot)占用有限的时域资源和频域资源，例如，每个RA slot可以对应一个时隙(或mini-slot或子帧)。图2中的RA slot仅是举例说明，每个RA slot即一个接入时间单元，本申请对接入时间单元的时间长度不做限定。
图2中RA slot对应的(即，第一行的)每个实线方框表示一个码域资源，该码域资源例如是参考信号，同一个RA slot中的三个实线方框表示三个不同的参考信号，这三个参考信号可以是相互正交的参考信号。
d1至d7表示7个终端设备，每个实线方框中的数字表示使用该参考信号的终端设备的数量，例如，在RA slot1中，第一个实线方框中的数字为4，表示d1、d2、d3、d4这四个终端设备使用该实线方框对应的参考信号。
数据竞争传输队列(data contention transmission queue,DCTQ)中终端设备的顺序例如可以是依次排列，即，排在队首的终端设备首先发送数据，排在队尾的终端设备最后发送数据。每个DCTQ两侧的箭头表示终端设备加入队列的方向，即，新加入DCTQ的终端设备排在队列的尾部。
在本申请中，终端设备在可用的参考信号中随机选择一个参考信号，上述可用的参考信号可以是协议规定的，也可以是网络设备指示的。
在RA slot1中，网络设备(图2中未示出)接收到7个终端设备发送的数据后，根据数据的接收情况确定反馈的状态信息，第一个实线方框对应的参考信号(简称为第一参考信号)有四个终端设备使用，网络设备无法正确解调第一参考信号，这四个终端设备处于碰撞状态，因此，网络设备反馈碰撞(collision，C)；第二个实线方框对应的参考信号(简称为第二参考信号)只有d5使用，且网络设备正确接收到d5发送的数据，因此，网络设备向d5反馈肯定应答(acknowledgement，A)；第三个实线方框对应的参考信号(简称为第三参考信号)有两个设备使用，网络设备无法正确解调第三参考信号，即，这两个终端设备处于碰撞状态，因此，网络设备反馈C。上述反馈信息如图4中虚线方框所示。网络设备在RA slot1之后发送反馈消息，反馈消息包括上述状态信息。
在本申请中，终端设备碰撞或者终端设备发送的数据发送碰撞均指终端设备在相同的资源上发送数据导致网络设备接收数据失败，并非指物理实体发生碰撞。
还应理解，多个终端设备使用相同的资源发送数据会导致网络设备接收失败，为了便 于理解，在图2中，假设各个终端设备使用相同的频域资源，通过多个终端设备使用相同的参考信号发送数据导致网络设备无法正确解调进行说明。
网络设备分别根据RA slot1中两个参考信号(第一参考信号和第三参考信号)对应的数据未成功接收确定DCTQ的长度为2，即，队列中包括两个位置。
d1、d2、d3、d4、d6、d7这六个终端设备接收到反馈消息后，确定重新发送数据，根据RA slot1中两个参考信号(第一参考信号和第三参考信号)对应的数据未成功接收确定DCTQ的长度为2，并根据按照各自使用的参考信号的序号确定各自在DCTQ中的位置，DCTQ如图4所示，d1、d2、d3、d4分别根据其使用的第一参考信号的序号1排在第一位，d6、d7分别根据其使用的第三参考信号的序号3以及第二参考信号对应的上行数据成功接收排在第二位。上述示例仅是举例说明，也可以是d6、d7排在第一位，先发送，d1、d2、d3、d4排在第二位，后发送。每过一个RA slot，DCTQ的长度自动减1，排在DCTQ中的终端设备的位置的序号也自动减1。每个时隙后，网络设备根据该时隙的竞争结果以及上个时隙的队列长度减去1确定下个时隙的队列长度。例如，网络设备在RA slot1之后反馈的DCTQ长度为2(第一长度)，在RA slot2中，d1、d2和d3发送的上行数据未成功接收，网络设备根据参考信号的序号确定使用第一参考信号的终端设备先发送数据，使用第二参考信号的终端设备后发送数据，即，RA slot2之后DCTQ中需要为使用第一参考信号和第二参考信号的终端设备分配两个位置，上述第一长度在RA slot2减去1，得到的结果为1(这个“1”表示RA slot1之后DCTQ中的终端设备在RA slot2之后还需要1个接入时间单元)，网络设备根据上述两个位置以及第一长度减去1得到的结果确定RA slot2之后反馈的DCTQ的长度为3。终端设备同样可以根据上述方法确定各自的数据发送顺序，并根据网络设备反馈的DCTQ的长度确定在DCTQ中具体的位置。
d5接收到反馈消息后确定不加入DCTQ。
在RA slot2，d1、d2、d3、d4向网络设备发送数据，网络设备根据该数据的检测结果在RA slot2后发送反馈消息，其中，网络设备成功解调d1发送的参考信号并识别出d1，但是未成功接收d1发送的用户数据，因此，d1收到的反馈消息为否定应答(negative acknowledgement，N)；d2、d3使用同一个参考信号，处于碰撞状态，因此，d2、d3收到的反馈消息为C；d4发送的数据被正确接收，因此，d4收到的反馈消息为A。
d1、d2、d3接收到反馈消息后，d1确定重传数据，d2、d3确定重新发送之前发送的数据，d1根据其使用的第一参考信号的序号1确定d1比使用第二参考信号和第三参考信号的终端设备(即d2、d3、d4)先发送数据，并根据数值1(RA slot1之后的队列长度2减去1得到的值)确定d1位于RA slot2之后的DCTQ中的第二位；d2和d3分别根据其使用的第二参考信号的序号2确定各自的数据发送次序位于使用第一参考信号的终端设备(即d1)的后面，并根据数值1(RA slot1之后的队列长度2减去1得到的值)确定d2和d3位于RA slot2之后的DCTQ中的第三位。
在RA slot3，轮到d6、d7发送数据。d6、d7发送的数据均被网络设备成功接收，d6、d7收到的反馈消息为A。
在RA slot4，轮到d1发送数据，d1在该时隙发送的数据为重传数据。由于网络设备已识别出d1的标识，且网络设备中存储的DCTQ与各个终端设备存储的DCTQ相同，因此，网络设备能够确定d1的重传时间单元，从而，网络设备可以将d1在RA slot2发送的 数据和在RA slot4发送的数据合并后进行译码，增大了d1数据传输成功的概率。
可选地，当在一个RA slot内仅有一个终端设备重传时，该终端设备可以选择固定的参考信号，网络设备也根据该固定的参考信号接收重传数据，从而可以减小网络设备的接收复杂度。
在RA slot5，轮到d2和d3发送数据。d2和d3发送的数据均被网络设备成功接收，d2、d3收到的反馈消息为A，此后，网络设备和各个终端设备中的DCTQ队列均为空。
在本申请中，当发生碰撞的终端设备(即收到反馈消息为C的终端设备)再次发送时，可以采用功率爬坡调整发射功率。
应理解，为了便于描述，在本申请中，在一个接入时隙之后是指在该接入时隙之后且在下一个接入时隙之前，例如，在RA slot1之后是指在RA slot1之后且在RA slot2之前。
图3示出了本申请提供的另一种资源选择的方法的示意性流程图。
如图3所示，d1至d22表示22个终端设备，所有需要重传的终端设备统一在重传队列(retransmission queue，RTQ)中排队重传，每个接入时间单元对应一个无线帧(frame)，每个无线帧对应4个信道，分别标识为信道1、信道2、信道3和信道4，该4个信道的配置如表1所示。其余文字和标识的含义与图2中的文字和标识的含义相同。
表1
Figure PCTCN2018079138-appb-000001
作为一个可选的示例，一个无线帧包括两个可用于发送数据的时间单元，该两个时间单元的起始子帧分别标识为#1和#6，在频域上配置两个资源，该两个资源的频率起始索引分别为f_1和f_2，因此，对于终端设备来说，一次接入时间单元有4个可选的信道，如表1所示。
每个信道配置3个可用的参考信号(图3中每个信道对应的3个实线方框)，参考信号例如可以是前导码(preamble)、解调参考信号或者随机序列。
在无线帧#1中，d1至d22从上述资源中随机选择一个可用的资源发送数据，当不同的终端设备选择了相同的时频资源和相同的参考信号时，终端设备发生碰撞，如d1、d2、d3和d4所示。发生碰撞的终端设备进入DCTQ排队传输，接收到反馈消息为N的终端设备进入RTQ排队传输。
本申请提供的资源选择的方法，候选资源集合提供了多维资源供终端设备竞争发送，终端设备可以从候选资源集合中灵活选择目标资源，从而可以减小可能的深衰落对数据传输的影响，获得分集增益。
上文介绍了本申请提供的资源选择的方法，下面，将结合附图详细描述本申请提供的数据传输(即，传输反馈信息)的方法。
图4示出了本申请提供的一种数据传输的方法400的示意性流程图。该方法400包括：
S410，第一终端设备从网络设备接收反馈信息集合，所述反馈信息集合包括至少一个反馈信息。
S420，所述第一终端设备根据位置信息从所述反馈信息集合中确定第一反馈信息，
其中，所述位置信息用于指示所述第一反馈信息在所述反馈集合中的位置，所述位置信息是所述第一终端设备根据第一资源在候选资源集合中的位置确定的，所述第一资源用于所述第一终端设备向所述网络设备发送第一数据，所述第一反馈信息是所述第一数据的反馈信息。
在S410中，第一终端设备为向网络设备发送数据的任意一个终端设备，候选资源集合即每个接入时间单元对应的资源的集合，第一资源为候选资源集合中的任意一个用于第一终端设备向网络设备发送第一数据的资源。第一终端设备从候选资源集合中选择第一资源后，即确定了第一位置。
在本申请中，网络设备向终端设备发送的反馈信息中包括网络设备对所有参考信号的检测结果。网络设备首先尝试检测每个终端设备可能使用的参考信号，当网络设备检测到某个参考信号被终端设备使用后，网络设备继续检测该参考信号对应的上行消息，因此，在本申请中，网络设备对参考信号的检测结果包括网络设备对参考信号对应的上行消息的检测结果。
在S420中，网络设备在每个接入时间单元后向终端设备发送反馈信息集合，该反馈信息集合例如可以位于一个数据包中，反馈信息集合包括第一终端设备发送的第一数据的反馈信息(即，第一反馈信息)。本申请对反馈信息的具体内容不作限定。此外，第一数据可以是初传数据，也可以是重传数据。
第一终端设备接收到反馈信息集合后，需要从中确定第一数据在网络设备侧的检测结果。例如，网络设备和第一终端设备预先约定对所有可使用的参考信号排序，网络设备使用该排序反馈每个参考信号的检测结果(例如，每个参考信号的检测结果使用2个比特表示)。第一终端设备收到反馈信息集合后，根据第一终端设备发送第一数据时使用的参考信号的序号，从反馈信息集合中确定该参考信号的检测结果。预先约定可以是：通信协议中规定，或者网络设备确定排序后并通过广播信道，系统信息或者专用信令发送给终端设备。
例如，对N个可使用的参考信号排序为：参考信号1，参考信号2，参考信号3，……,参考信号N。网络设备发送给第一终端设备的反馈信息集合中包括：检测结果1，检测结果2，检测结果3，……,检测结果N。如第一终端设备发送上行消息时使用的参考信号为参考信号3(即，第一位置的序号为3)，那么第一终端设备收到第一反馈信息结合后，从中确定网络设备对该上行消息的检测结果(即，第一数据的反馈信息)为检测结果3。
此外，在S420中，反馈信息集合中反馈信息的排列顺序可以与候选资源集合中候选资源的排列顺序相同，反馈信息集合中反馈信息的排列顺序可以也可以按照预设的对应关系与候选资源集合中候选资源的排列顺序相对应，其中，该预设的对应关系可以是通信协议规定的，也可以是网络设备指示的。
上述实施例仅是举例说明，本申请不限于此，例如，第一终端设备还可以根据发送第一数据使用的信道在多个候选信道中的位置从反馈信息集合中确定第一反馈信息。
图5示出了本申请提供的一种反馈信息的格式的示意图。
当终端设备发送初传数据使用的资源(即，竞争资源)和发送重传数据使用的资源(即，重传资源)不同时，可以使用图5所示的反馈信息的格式，竞争资源的反馈信息与重传资源的反馈信息可以分别独立封装。
竞争资源的反馈信息的格式如格式a所示，每个实线方框代表一个比特，E和T为子头(subheader)所包括的两个比特，其中，E用于指示子头后面是否有扩展，T用于指示子头的类型。可选地，T域可以扩展至多个比特，子头中也可以设置一个预留位R。子头中剩余的比特表示竞争资源的反馈状态。可以使用3个比特表示1个竞争资源的反馈状态，如图5中P1、P2、P3、P4所示的四种状态。
重传资源的反馈信息的格式如格式b所示，格式b与格式a类似。可以使用2个比特表示1个重传资源的反馈状态，如图5中D1、D2、D3、D4、D5、D6所示。
可选地，当候选资源集合中候选资源的数量较多且终端设备较少时，可以只反馈终端设备使用的资源的状态，其余未使用的资源的反馈状态默认为空白状态(blank，B)。
图6示出了本申请提供的另一种反馈信息的格式的示意图。
图6中R为预留位，其余各个标识的含义与图5中各个标识的含义相同。图6所示的反馈信息的格式可用于反馈集合所包括的位置的数量(例如，队列的长度)，每个子头有5个可用的比特位，可以表示的队列的长度为32，当队列长度超过32时，可以使用后面的扩展子头。
综上，本申请提供的数据传输的方法，第一终端设备从候选资源集合中选择用于传输第一数据的第一资源，并根据第一资源在候选资源集合中的位置从接收到的反馈信息集合中确定该第一数据的反馈信息，第一终端设备无需通过标识或者指示信息即可从反馈信息集合中确定第一数据的反馈信息，从而减小了第一终端设备接收反馈信息的复杂度。
可选地，方法400还包括：
S430，所述第一终端设备通过所述第一资源向所述网络设备发送第二数据，所述第二数据为重传数据，所述第二数据与所述第一数据对应相同的信息块。
第一终端设备发送的第一数据传输失败后，第一终端设备可以通过第一资源向网络设备发送重传数据，即，第二数据。
网络设备和第一终端设备都确定第一终端设备通过发送第一数据使用的资源(即，第一资源)发送第二数据，其中，当第一资源被理解为时域资源时，上述通过第一资源发送第二数据是指：通过与发送第一数据使用的时域资源的编号相同的时域资源发送第二数据。
例如，第一资源包括起始子帧#1对应的时域资源、起始频率f_1对应的频域资源以及第一参考信号，则在发送第二数据时，第一终端设备仍然使用起始子帧#1对应的时域资源、起始频率f_1对应的频域资源以及第一参考信号。
此外，上述网络设备和第一终端设备都确定第一终端设备通过第一资源发送第二数据是指：网络设备和第一终端设备都根据通信协议的规定或者预设的信息确定第一终端设备通过第一资源发送第二数据。
因此，根据本申请提供的数据传输的方法，网络设备直接在第一资源上检测第二数据，无需对第一终端设备所有可能使用的资源进行检测，从而可以减小网络设备接收重传数据的复杂度。
可选地，所述反馈信息集合包括多个反馈信息子集，所述第一终端设备从所述网络设备接收反馈信息集合，包括：
S421，所述第一终端设备通过多个时段从所述网络设备接收所述多个反馈信息子集，所述第二数据与所述第一数据对应相同的信息块。
当在一个接入时间单元中竞争发送的终端设备的数量较多时，反馈信息的数据量较大，可能造成网络设备在发送反馈信息集合时选择资源的难度较大，或者可能造成网络设备和第一终端设备的链路自适应调节难度较高。
根据本申请提供的数据传输的方法，网络设备可以分段发送反馈信息集合，例如，网络设备每次只反馈候选资源集合中部分资源的竞争结果和对应的队列的长度，第一终端设备需要获取网络设备通过多个时段发送的反馈信息子集后才能确定候选资源集合中全部资源的状态和完整的队列长度。
当网络设备通过多个时段发送多个反馈信息子集时，网络设备可以按照默认的顺序发送，该默认的顺序例如是候选资源集合中候选资源的顺序，该默认顺序也可以是通信协议规定的顺序或者网络设备指示的顺序。
因此，本申请提供的数据传输的方法，第一终端设备通过多个时段从网络设备接收多个反馈信息子集，从而可以减小第一终端设备接收反馈信息集合的链路自适应调节的难度。
可选地，方法400还包括：
S401，所述第一终端设备从所述网络设备接收第一指示信息，所述第一指示信息用于指示所述候选资源集合。
在本申请中，网络设备可以根据实际情况指示第一终端设备通过竞争的方式发送上行数据，即，与其它终端设备共用候选资源集合中的资源发送上行数据，例如，在对上行时延要求不高的场景中，网络设备可以通过第一指示信息指示候选资源集合，并通过竞争指示信息指示第一终端设备通过竞争的方式发送上行数据，其中，第一指示信息例如可以是调度信息或者物理层信令或者高层信令，第一指示信息与竞争指示信息可以位于相同的信令中。
第一终端设备接收到第一指示信息后，从候选资源集合中确定第一资源。
第一终端设备接收到第一指示信息前可以是基于竞争的方式传输，也可以是基于调度的方式传输。
根据本申请提供的数据传输的方法，网络设备可以灵活选择终端设备的传输模式，提高资源利用率。
可选地，方法400还包括：
S402，所述第一终端设备从所述网络设备接收第二指示信息，所述第二指示信息用于指示第二资源，所述第二资源用于所述第一终端设备发送数据。
在本申请中，网络设备和终端设备同时维护一个集合，该集合中的终端设备基于竞争的方式发送上行数据，网络设备知道集合什么时候为空，当竞争接入的起始时间单元之前集合已经为空时，网络设备可以将用于该集合中终端设备竞争传输的资源调度给其它终端设备使用，从而可以避免资源浪费，并且可以提高使用上述资源的终端设备的数据传输的可靠性。
作为一个可选的示例，网络设备可以在第一终端设备基于竞争的方式多次发送上行数据后仍未发送成功时，向第一终端设备发送第二指示信息，并通过调度信息指示第一终端设备通过第二资源发送上行数据，第二资源可以是与候选资源集合中的资源不同的资源，第二资源也可以是候选资源集合中可靠性较高的资源。指示第二资源的同时，网络设备可以通过调度信息指示使用第二资源发送数据的发送格式，例如使用的调制和编码方式等。调度信息可以与第二指示信息位于相同的信令中。
从而，网络设备可以灵活选择终端设备的传输模式，提高数据传输的成功率。
可选地，方法400还包括：
S440，所述第一终端设备从所述网络设备接收第一数量信息，所述第一数量信息用于指示第一集合中终端设备占据的位置的最大数量，所述第一集合包括所述第一终端设备。
S450，所述第一终端设备在所述第一集合中终端设备占据的位置的数量大于或等于所述最大数量时，且在所述第一终端设备在所述第一集合中的位置满足退出条件时退出所述第一集合。第一集合可以是队列，也可以是其它形式。
第一集合中的终端设备基于竞争进行数据传输，当第一集合中的终端设备过多时，不同终端设备之间发生碰撞的概率较大，从而导致传输成功率下降。为了提高传输成功率，可以设定一个数量阈值，该数量阈值用于指示第一集合中能够容纳的位置的最大数量，其中，每个终端设备占据第一集合中的一个位置，第一集合中的每个位置可以容纳至少一个终端设备。
当第一集合中的终端设备占据的位置的数量大于或等于该数量阈值时，第一集合中满足预设的条件的终端设备退出第一集合，从而可以降低终端设备碰撞的概率，提高传输成功率。其中，预设的条件可以是通信协议规定的，也可以是网络设备指示的。
图7示出了本申请提供的另一种数据传输的方法的示意性流程图。
图7中，d1至d13为13个终端设备，其余文字和标识的含义与图2中文字和标识的含义相同。
从RA slot1至RA slot5，终端设备基于竞争的方式发送上行数据，基于竞争的方式是指该13个终端设备共用候选资源集合中的资源。
在RA slot5之后，DCTQ中仍有大量的终端设备未能成功传输数据，因此，在RA slot5之后，网络设备可以反馈的队列长度可以为3，即，DCTQ中只能保留3个位置，预设的条件可以为保留队列中前3个位置的终端设备，其余位置的终端设备退出队列。
d9、d10、d11、d12和d13分别根据网络设备反馈的队列长度以及各自在DCTQ中的位置满足预设条件退出DCTQ。
图8示出了本申请提供的再一种数据传输的方法的示意性流程图。
图8中，需要重传的终端设备在RTQ中排队传输，其余文字和标识的含义与图7中文字和标识的含义相同。
从RA slot1至RA slot5，终端设备基于竞争的方式发送上行数据。
在RA slot5之后，网络设备反馈的DCTQ的长度为2，预设条件为保留队列中前2个位置的终端设备，其余位置的终端设备退出队列。
当网络设备希望清空队列时，可以反馈DCTQ的长度为0。
在图7和图8所示的方法中，终端设备退出队列后可以等待网络设备的调度，也可以 再次基于竞争的方式发送数据。
根据本申请提供的数据传输的方法，网络设备可以根据实际情况灵活确定队列中的终端设备的传输方式，提高了资源利用率的同时保证了数据传输的可靠性。
图9是本申请提供的再一种数据传输的方法的示意性流程图。该方法900包括：
S910，网络设备生成第一反馈信息。
S920，所述网络设备向第一终端设备发送反馈信息集合，所述反馈信息集合包括所述第一反馈信息，
其中，所述第一反馈信息在所述反馈信息集合中的位置与第一资源在候选资源集合中的位置相对应，所述第一资源用于所述第一终端设备发送第一数据，所述第一反馈信息是所述第一数据的反馈信息。
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述方法900中网络设备的具体工作过程，可以参考前述方法400中的对应过程，在此不加赘述。
本申请提供的数据传输的方法，网络设备根据第一资源在候选资源集合中的位置向第一终端设备发送第一数据的反馈信息，第一数据的反馈信息在反馈信息集合中的位置与第一资源在候选资源集合中的位置相对应，第一终端设备无需通过标识或者指示信息即可从反馈信息集合中确定第一数据的反馈信息，从而减小了第一终端设备接收反馈信息的复杂度。
可选地，方法900还包括：
S930，所述网络设备通过所述第一资源从所述第一终端设备接收第二数据，所述第二数据为重传数据，所述第二数据与所述第一数据对应相同的信息块。
根据本申请提供的数据传输的方法，网络设备直接在第一资源上检测第二数据，无需对第一终端设备所有可能使用的资源进行检测，从而可以减小网络设备接收重传数据的复杂度。
可选地，所述反馈信息集合包括多个反馈信息子集，所述网络设备发送反馈信息集合，包括：
S921，所述网络设备通过多个时段发送所述多个反馈信息子集，所述多个时段与所述多个反馈信息子集一一对应。
本申请提供的数据传输的方法，网络设备通过多个时段向第一终端设备发送多个反馈信息子集，从而可以减小网络设备发送反馈信息集合的链路自适应调节的难度，并且可以减小网络设备发送反馈信息集合时选择资源的难度。
可选地，方法900还包括：
S901，所述网络设备向所述第一终端设备发送第一指示信息，所述第一指示信息用于指示所述候选资源集合。
根据本申请提供的数据传输的方法，网络设备可以灵活选择终端设备的传输模式，提高资源利用率。
可选地，方法900还包括：
S902，所述网络设备向所述第一终端设备发送第二指示信息，所述第二指示信息用于指示第二资源，所述第二资源用于所述第一终端设备发送数据。
根据本申请提供的数据传输的方法，网络设备可以灵活选择终端设备的传输模式，提 高数据传输的成功率。
可选地，方法900还包括：
S940，所述网络设备发送第一数量信息，所述第一数量信息用于指示第一集合中终端设备占据的位置的最大数量，以便于所述第一终端设备在所述第一集合中终端设备占据的位置的数量大于或等于所述最大数量时，且在所述第一终端设备在所述第一集合中的位置满足退出条件时退出所述第一集合。
第一集合中的终端设备基于竞争进行数据传输，当第一集合中的终端设备过多时，不同终端设备之间发生碰撞的概率较大，从而导致传输成功率下降。为了提高传输成功率，可以设定一个数量阈值，该数量阈值用于指示第一集合中能够容纳的位置的最大数量，其中，每个终端设备占据第一集合中的一个位置，第一集合中的每个位置可以容纳至少一个终端设备。
当第一集合中的终端设备占据的位置的数量大于或等于该数量阈值时，第一集合中满足预设的条件的终端设备退出第一集合，从而可以降低终端设备碰撞的概率。
根据本申请提供的数据传输的方法，网络设备可以根据实际情况灵活确定第一集合中的终端设备的传输方式，提高了资源利用率的同时保证了数据传输的可靠性。
上文详细介绍了本申请提供的数据传输的方法示例。可以理解的是，终端设备和网络设备为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请可以根据上述方法示例对终端设备等进行功能单元的划分，例如，可以对应各个功能划分各个功能单元，也可以将两个或两个以上的功能集成在一个处理单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。需要说明的是，本申请中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
在采用集成的单元的情况下，图10示出了上述实施例中所涉及的第一终端设备的一种可能的结构示意图。第一终端设备1000包括：处理单元1002和通信单元1003。处理单元1002用于对第一终端设备1000的动作进行控制管理，例如，处理单元1002用于支持第一终端设备1000执行图4的S420和/或用于本文所描述的技术的其它过程。通信单元1003用于支持第一终端设备1000与其它网络实体的通信，例如与网络设备之间的通信。第一终端设备1000还可以包括存储单元1001，用于存储第一终端设备1000的程序代码和数据。
其中，处理单元1002可以是处理器或控制器，例如可以是中央处理器(central processing unit，CPU)，通用处理器，数字信号处理器(digital signal processor，DSP)，专用集成电路(application-specific integrated circuit，ASIC)，现场可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件 或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。通信单元1003可以是收发器、收发电路等。存储单元1001可以是存储器。
本申请提供的第一终端设备1000，从候选资源集合中选择用于传输第一数据的第一资源，并根据第一资源在候选资源集合中的位置从接收到的反馈信息集合中确定该第一数据的反馈信息，第一终端设备1000无需通过标识或者指示信息即可从反馈信息集合中确定第一数据的反馈信息，从而减小了第一终端设备1000接收反馈信息的复杂度。
当处理单元1002为处理器，通信单元1003为收发器，存储单元1001为存储器时，本申请所涉及的第一终端设备可以为图13所示的第一终端设备。
参阅图11所示，该第一终端设备1100包括：处理器1102、收发器1103、存储器1101。其中，收发器1103、处理器1102以及存储器1101可以通过内部连接通路相互通信，传递控制和/或数据信号。
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述描述的装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不加赘述。
本申请提供的第一终端设备1100，从候选资源集合中选择用于传输第一数据的第一资源，并根据第一资源在候选资源集合中的位置从接收到的反馈信息集合中确定该第一数据的反馈信息，第一终端设备1100无需通过标识或者指示信息即可从反馈信息集合中确定第一数据的反馈信息，从而减小了第一终端设备1100接收反馈信息的复杂度。
在采用集成的单元的情况下，图12示出了上述实施例中所涉及的网络设备的一种可能的结构示意图。网络设备1200包括：处理单元1202和通信单元1203。处理单元1202用于对网络设备1200的动作进行控制管理，例如，处理单元1202用于支持网络设备1200执行图9的S910和/或用于本文所描述的技术的其它过程。通信单元1203用于支持网络设备1200与其它网络实体的通信，例如与终端设备之间的通信。网络设备1200还可以包括存储单元1201，用于存储网络设备1200的程序代码和数据。
其中，处理单元1202可以是处理器或控制器，例如可以是CPU，通用处理器，DSP，ASIC，FPGA或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。通信单元1203可以是收发器、收发电路等。存储单元1201可以是存储器。
本申请提供的数据传输的网络设备1200，根据第一资源在候选资源集合中的位置向第一终端设备发送第一数据的反馈信息，第一数据的反馈信息在反馈信息集合中的位置与第一资源在候选资源集合中的位置相对应，第一终端设备无需通过标识或者指示信息即可从反馈信息集合中确定第一数据的反馈信息，从而减小了第一终端设备接收反馈信息的复杂度。
当处理单元1202为处理器，通信单元1203为收发器，存储单元1201为存储器时，本申请所涉及的网络设备可以为图13所示的网络设备。
参阅图13所示，该网络设备1300包括：处理器1302、收发器1303、存储器1301。其中，收发器1303、处理器1302以及存储器1301可以通过内部连接通路相互通信，传 递控制和/或数据信号。
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述描述的装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不加赘述。
本申请提供的数据传输的网络设备1300，根据第一资源在候选资源集合中的位置向第一终端设备发送第一数据的反馈信息，第一数据的反馈信息在反馈信息集合中的位置与第一资源在候选资源集合中的位置相对应，第一终端设备无需通过标识或者指示信息即可从反馈信息集合中确定第一数据的反馈信息，从而减小了第一终端设备接收反馈信息的复杂度。
在本申请各个实施例中，各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请的实施过程构成任何限定。
另外，本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
结合本申请公开内容所描述的方法或者算法的步骤可以硬件的方式来实现，也可以是由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器(random access memory，RAM)、闪存、只读存储器(read only memory，ROM)、可擦除可编程只读存储器(erasable programmable ROM，EPROM)、电可擦可编程只读存储器(electrically EPROM，EEPROM)、寄存器、硬盘、移动硬盘、只读光盘(CD-ROM)或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于终端设备中。当然，处理器和存储介质也可以作为分立组件存在于终端设备和网络设备中。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者通过所述计算机可读存储介质进行传输。所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
以上所述的具体实施方式，对本申请的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本申请的具体实施方式而已，并不用于限定本申请的保护范围，凡在本申请的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本申请的保护范围之内。

Claims (24)

  1. 一种数据传输的方法，其特征在于，所述方法包括：
    第一终端设备从网络设备接收反馈信息集合，所述反馈信息集合包括至少一个反馈信息；
    所述第一终端设备根据位置信息从所述反馈信息集合中确定第一反馈信息，
    其中，所述位置信息用于指示所述第一反馈信息在所述反馈信息集合中的位置，所述位置信息是所述第一终端设备根据第一资源在候选资源集合中的位置确定的，所述第一资源用于所述第一终端设备向所述网络设备发送第一数据，所述第一反馈信息是所述第一数据的反馈信息。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备通过所述第一资源向所述网络设备发送第二数据，所述第二数据为重传数据，所述第二数据与所述第一数据对应相同的信息块。
  3. 根据权利要求1或2所述的方法，其特征在于，所述反馈信息集合包括多个反馈信息子集，所述第一终端设备从所述网络设备接收反馈信息集合，包括：
    所述第一终端设备通过多个时段从所述网络设备接收所述多个反馈信息子集，所述多个时段与所述多个反馈信息子集一一对应。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备从所述网络设备接收第一指示信息，所述第一指示信息用于指示所述候选资源集合。
  5. 根据权利要求1至4中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备从所述网络设备接收第二指示信息，所述第二指示信息用于指示第二资源，所述第二资源用于所述第一终端设备发送数据。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备从所述网络设备接收第一数量信息，所述第一数量信息用于指示第一集合中终端设备占据的位置的最大数量，所述第一集合包括所述第一终端设备；
    所述第一终端设备在所述第一集合中终端设备占据的位置的数量大于或等于所述最大数量时，且在所述第一终端设备在所述第一集合中的位置满足退出条件时退出所述第一集合。
  7. 一种数据传输的方法，其特征在于，所述方法包括：
    网络设备生成第一反馈信息；
    所述网络设备向第一终端设备发送反馈信息集合，所述反馈信息集合包括所述第一反馈信息，
    其中，所述第一反馈信息在所述反馈信息集合中的位置与第一资源在候选资源集合中的位置相对应，所述第一资源用于所述第一终端设备发送第一数据，所述第一反馈信息是所述第一数据的反馈信息。
  8. 根据权利要求7所述的方法，其特征在于，所述方法还包括：
    所述网络设备通过所述第一资源从所述第一终端设备接收第二数据，所述第二数据为 重传数据，所述第二数据与所述第一数据对应相同的信息块。
  9. 根据权利要求7或8所述的方法，其特征在于，所述反馈信息集合包括多个反馈信息子集，所述网络设备发送反馈信息集合，包括：
    所述网络设备通过多个时段发送所述多个反馈信息子集，所述多个时段与所述多个反馈信息子集一一对应。
  10. 根据权利要求7至9中任一项所述的方法，其特征在于，所述方法还包括：
    所述网络设备向所述第一终端设备发送第一指示信息，所述第一指示信息用于指示所述候选资源集合。
  11. 根据权利要求7至10中任一项所述的方法，其特征在于，所述方法还包括：
    所述网络设备向所述第一终端设备发送第二指示信息，所述第二指示信息用于指示第二资源，所述第二资源用于所述第一终端设备发送数据。
  12. 根据权利要求7至11中任一项所述的方法，其特征在于，所述方法还包括：
    所述网络设备发送第一数量信息，所述第一数量信息用于指示第一集合中终端设备占据的位置的最大数量，以便于所述第一终端设备在所述第一集合中终端设备占据的位置的数量大于或等于所述最大数量时，且在所述第一终端设备在所述第一集合中的位置满足退出条件时退出所述第一集合。
  13. 一种数据传输的装置，其特征在于，所述装置包括处理单元和通信单元，
    所述通信单元用于：从网络设备接收反馈信息集合，所述反馈信息集合包括至少一个反馈信息；
    所述处理单元用于：根据位置信息从所述通信单元接收的所述反馈信息集合中确定第一反馈信息，
    其中，所述位置信息用于指示所述第一反馈信息在所述反馈信息集合中的位置，所述位置信息是所述处理单元根据第一资源在候选资源集合中的位置确定的，所述第一资源用于所述通信单元向所述网络设备发送第一数据，所述第一反馈信息是所述第一数据的反馈信息。
  14. 根据权利要求13所述的装置，其特征在于，所述通信单元还用于：
    通过所述第一资源向所述网络设备发送第二数据，所述第二数据为重传数据，所述第二数据与所述第一数据对应相同的信息块。
  15. 根据权利要求13或14所述的装置，其特征在于，所述反馈信息集合包括多个反馈信息子集，
    所述通信单元具体用于：通过多个时段从所述网络设备接收所述多个反馈信息子集，所述多个时段与所述多个反馈信息子集一一对应。
  16. 根据权利要求13至15中任一项所述的装置，其特征在于，所述通信单元还用于：
    从所述网络设备接收第一指示信息，所述第一指示信息用于指示所述候选资源集合。
  17. 根据权利要求13至16中任一项所述的装置，其特征在于，所述通信单元还用于：
    从所述网络设备接收第二指示信息，所述第二指示信息用于指示第二资源，所述第二资源用于所述通信单元发送数据。
  18. 根据权利要求13至17中任一项所述的装置，其特征在于，
    所述通信单元还用于：从所述网络设备接收第一数量信息，所述第一数量信息用于指 示第一集合中终端设备占据的位置的最大数量，所述第一集合包括所述装置；
    所述处理单元还用于：在所述第一集合中终端设备占据的位置的数量大于或等于所述最大数量时，且在所述第一终端设备在所述第一集合中的位置满足退出条件时确定所述装置退出所述第一集合。
  19. 一种数据传输的装置，其特征在于，所述装置包括处理单元和通信单元，
    所述处理单元用于：生成第一反馈信息；
    所述通信单元用于：向第一终端设备发送反馈信息集合，所述反馈信息集合包括所述处理单元生成的所述第一反馈信息，
    其中，所述第一反馈信息在所述反馈信息集合中的位置与第一资源在候选资源集合中的位置相对应，所述第一资源用于所述第一终端设备发送第一数据，所述第一反馈信息是所述第一数据的反馈信息。
  20. 根据权利要求19所述的装置，其特征在于，所述通信单元还用于：
    通过所述第一资源从所述第一终端设备接收第二数据，所述第二数据为重传数据，所述第二数据与所述第一数据对应相同的信息块。
  21. 根据权利要求19或20所述的装置，其特征在于，所述反馈信息集合包括多个反馈信息子集，
    所述通信单元具体用于：所述网络设备通过多个时段发送所述多个反馈信息子集，所述多个时段与所述多个反馈信息子集一一对应。
  22. 根据权利要求19至21中任一项所述的装置，其特征在于，所述通信单元还用于：
    向所述第一终端设备发送第一指示信息，所述第一指示信息用于指示所述候选资源集合。
  23. 根据权利要求19至22中任一项所述的装置，其特征在于，所述通信单元还用于：
    向所述第一终端设备发送第二指示信息，所述第二指示信息用于指示第二资源，所述第二资源用于所述第一终端设备发送数据。
  24. 根据权利要求19至23中任一项所述的装置，其特征在于，所述通信单元还用于：
    发送第一数量信息，所述第一数量信息用于指示第一集合中终端设备占据的位置的最大数量，以便于所述第一终端设备在所述第一集合中终端设备占据的位置的数量大于或等于所述最大数量时，且在所述第一终端设备在所述第一集合中的位置满足退出条件时退出所述第一集合。
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