WO2018028123A1 - 数据传输方法、数据传输装置和通信系统 - Google Patents

数据传输方法、数据传输装置和通信系统 Download PDF

Info

Publication number
WO2018028123A1
WO2018028123A1 PCT/CN2016/112436 CN2016112436W WO2018028123A1 WO 2018028123 A1 WO2018028123 A1 WO 2018028123A1 CN 2016112436 W CN2016112436 W CN 2016112436W WO 2018028123 A1 WO2018028123 A1 WO 2018028123A1
Authority
WO
WIPO (PCT)
Prior art keywords
data
time
frequency resources
retransmission
data transmission
Prior art date
Application number
PCT/CN2016/112436
Other languages
English (en)
French (fr)
Inventor
胡远洲
董朋朋
彭金磷
王宗杰
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201680085970.3A priority Critical patent/CN109155706B/zh
Publication of WO2018028123A1 publication Critical patent/WO2018028123A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a data transmission method, a data transmission device, and a communication system.
  • the uplink data and the downlink data in the long term evolution (LTE) system are respectively carried by a physical uplink shared channel (PUSCH) and a physical downlink shared channel (PDSCH).
  • PUSCH physical uplink shared channel
  • PDSCH physical downlink shared channel
  • AMC adaptive modulation and coding
  • HARQ hybrid automatic repeat request
  • the AMC is a process of determining a modulation and coding scheme (MCS) of data transmission according to channel state information (CSI), wherein the CSI is estimated based on reference signals (RS) measurements.
  • MCS modulation and coding scheme
  • the base station For uplink communication, the base station first estimates the uplink CSI according to the RS measurement sent by the user equipment (UE), then determines the MCS of the uplink data communication according to the CSI, and finally notifies the UE by using the downlink control channel; and for the downlink communication, the base station first sends the uplink communication.
  • RS to the UE, the UE estimates using this RS measurement
  • the downlink CSI is reported to the base station, and finally the base station determines the MCS of the downlink data communication according to the obtained CSI.
  • the PUSCH and PDSCH of the current LTE system generally affect the selection of the MCS by controlling the initial block error rate (IBLER) target value (for example, 10%).
  • HARQ is a technology that combines forward error correction (FEC) and automatic repeat request (ARQ).
  • FEC forward error correction
  • ARQ automatic repeat request
  • the receiving device can correct part of the error data through FEC technology.
  • FEC forward error correction
  • ARQ automatic repeat request
  • the receiving device requests the transmitting device to retransmit the data of the original transport block (TB).
  • TB transport block
  • a multi-HARQ process mechanism may be introduced. When the data of one HARQ process is waiting for feedback from the receiving end, data transmission may be continued through other HARQ processes. .
  • the present application describes a data transmission method, a data transmission device, and a communication system.
  • an embodiment of the present application provides a data transmission method, including: initializing a first data by using a first process on m consecutive time-frequency resources, where m consecutive time-frequency resources Consisting of k consecutive minimum scheduling time units in the time domain; receiving a confirmation letter of the first data According to the acknowledgement information, the first data is retransmitted by the first process on the n consecutive time-frequency resources of the m consecutive time-frequency resources, and the at least one second process is passed on the mn time-frequency resources.
  • the first data is initially transmitted or retransmitted, wherein n consecutive time-frequency resources are composed of q consecutive minimum scheduling time units in the time domain.
  • m is a positive integer greater than or equal to 2
  • k, q, and n are positive integers and m is greater than n.
  • the second process second data and the first process first data may be the same user data or different user data.
  • m time-frequency resources can be discrete in the frequency domain.
  • m consecutive time-frequency resources may also be referred to as m time-frequency resources.
  • the time-frequency resource used for retransmitting the first data is smaller than the resource used for the first data, which can ensure that the initial data can include all the information bits in the fast transmission, and avoid The necessary decoding and feedback overhead, and the retransmission data with a small amount of data can avoid waste of resources and achieve the effect of matching channels, thereby improving spectrum efficiency.
  • the second data may be initially transmitted or retransmitted by using at least one second process by using m-n resources remaining in the m consecutive time-frequency resources, thereby reducing resource fragmentation and further improving spectral efficiency of data transmission.
  • the time interval (which may be referred to as an absolute time interval) composed of k consecutive minimum scheduling time units can ensure the compatibility of the data transmission method with different systems.
  • the data transmission method is applicable to data transmission of downlink data transmission, uplink data transmission, or device to device (D2D).
  • the method in downlink data transmission, can be The base station performs; in uplink data transmission or D2D data transmission, the method can be performed by the user equipment.
  • the method further includes: transmitting control information.
  • the control information is used to control the initial transmission of the first process, or to control the retransmission of the first process or to simultaneously control the initial transmission and retransmission of the first process.
  • the control information is used to control data transmission within a minimum scheduled time unit.
  • the method further includes obtaining redundant version RV information.
  • the RV information is used to control the initial transmission of the first process or to control the retransmission of the first process.
  • the RV information is used to control data transmission within a minimum scheduling time unit.
  • the above control information carries RV information, and the RV information can be obtained from the above control information.
  • the predefined rule pre-defines the RV information, and the RV information can be obtained based on the predefined rule.
  • the method further includes: obtaining a multiplexing manner in which the first process and the second process multiplex m consecutive time-frequency resources, where the multiplexing manner includes one or any combination of the following: Time division multiplexing, frequency division multiplexing, space division multiplexing, code division multiplexing, and symbol multiplexing.
  • the time-frequency resource for transmitting the first-time data of the first process or retransmitting the data is also used to send the initial transmission or re-transmission data of the third process, where the process number of the third process and the third process
  • the process ID of the first process and the process ID of the third process are not bound, and the independent numbering mechanism can further implement space division multiplexing on the m consecutive time-frequency resources.
  • the value of k is k1; for the second system, the value of k is k2, where k1 is different from k2, and k1 and k2 are positive integers, and the first system
  • the duration of the k1 minimum scheduling time units is equal to the duration of the k2 minimum scheduling time units in the second system. Therefore, for different communication systems, k consecutive minimum scheduling time units
  • the length of time that the time interval (which may be referred to as an absolute time interval) is the same, so that the compatibility of the data transmission method with different systems can be guaranteed.
  • the acknowledgment information is used to indicate whether the first data initially transmitted on the k consecutive minimum scheduling time units was received correctly.
  • an embodiment of the present application provides a communication method, including: receiving retransmission data of a first process and data of at least one second process; receiving retransmission data of the first process and at least one second After the data of the process, the confirmation information of the first process and the confirmation information of at least one second process are fed back.
  • the retransmission data of the first process is distributed in n consecutive time-frequency resources in m consecutive time-frequency resources, and the m consecutive time-frequency resources are composed of k consecutive minimum scheduling time units in the time domain;
  • the data of the at least one second process includes the initial data or the retransmitted data of the at least one second process, the data of the at least one second process is distributed in mn time-frequency resources, and the n consecutive time-frequency resources are in the time domain by q. Consisting of a continuous minimum scheduling time unit.
  • m is a positive integer greater than or equal to 2
  • k, q, and n are positive integers and m is greater than n.
  • the second process second data and the first process first data may be the same user data or different user data.
  • m time-frequency resources can be discrete in the frequency domain.
  • m consecutive time-frequency resources may also be referred to as m time-frequency resources.
  • the initial data can be included in the transmission fast.
  • the information bits avoid unnecessary decoding and feedback overhead, and the retransmission data with small data volume can avoid waste of resources and achieve the effect of matching channels, thereby improving spectrum efficiency.
  • the second data may be initially transmitted or retransmitted by using at least one second process by using m-n resources remaining in the m consecutive time-frequency resources, thereby reducing resource fragmentation and further improving spectral efficiency of data transmission.
  • the time interval (which may be referred to as an absolute time interval) composed of k consecutive minimum scheduling time units can ensure the compatibility of the data transmission method with different systems.
  • the data transmission method is applicable to data transmission of downlink data transmission, uplink data transmission, or device to device (D2D).
  • D2D device to device
  • the method in downlink data transmission or D2D data transmission, the method can be performed by a user equipment; in uplink data transmission, the method can be performed by a base station.
  • the method includes receiving control information.
  • the control information is used to control the initial transmission of the first process, or to control the retransmission of the first process or to simultaneously control the initial transmission and retransmission of the first process.
  • the control information is used to control data transmission within a minimum scheduled time unit.
  • control information also includes redundant version RV information.
  • the time-frequency resource for transmitting the retransmission data of the first process or the data of the second process is also used to send the initial transmission or retransmission data of the third process, where the process of the third process
  • the process of the third process The difference between the number and the process number of the first process or the second process is not fixed. Therefore, the process ID of the first process or the second process is not bound to the process ID of the third process, and the independent numbering mechanism may further implement space division multiplexing on the m consecutive time-frequency resources.
  • the value of k is k1; for the second system, the value of k is k2, where k1 is different from k2, and k1 and k2 are positive integers, and the first system
  • the duration of the k1 minimum scheduling time units and the duration of the k2 minimum scheduling time units in the second system Equal between. Therefore, for different communication systems, the time interval (which may be referred to as an absolute time interval) composed of k consecutive minimum scheduling time units is the same, so that the data transmission method can be guaranteed for different systems. Compatibility.
  • an embodiment of the present invention provides a first data transmission device and a second data transmission device.
  • the first data transmission device has the function of implementing the method of the first aspect described above.
  • the second data transmission device has the function of implementing the method of the second aspect described above.
  • the above functions can be implemented by hardware or by executing corresponding software through hardware.
  • the above hardware or software includes one or more modules corresponding to the above functions.
  • the first data transmission device in the downlink data transmission, is a base station, and the second data transmission device is a user equipment; in the uplink data transmission, the first data transmission device is a user equipment, and the second data transmission device is a base station; in D2D In data transmission, the first data transmission device is a user equipment, and the second data transmission device is another user equipment.
  • the structure of the base station includes a processor and a transceiver, and the processor is configured to support the base station to perform the corresponding functions in the above methods.
  • the transceiver is configured to support communication between the base station and the user equipment, and send information or instructions involved in the foregoing method to the user equipment, and receive information or instructions sent by the user equipment.
  • the base station can also include a memory for coupling with the processor that stores the necessary program instructions and data for the base station.
  • an embodiment of the present invention provides a user equipment, where the user equipment includes a processor and a transceiver, and the processor is configured to support the user equipment to perform a corresponding function in the foregoing method.
  • the transceiver is configured to support communication between the base station and the UE, and send information or instructions involved in the foregoing method to the base station to receive information or instructions sent by the base station.
  • the user equipment may also include a memory for coupling with the processor that holds program instructions and data necessary for the user equipment.
  • an embodiment of the present invention provides a communication system, where the system includes the base station and the UE in the foregoing aspect.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions for use in the first data transmission device, including a program designed to perform the above aspects.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions for use in the second data transmission device, including a program designed to perform the above aspects.
  • the initial data can be ensured to include all the information bits in the fast transmission.
  • the unnecessary decoding and feedback overhead is avoided, and the retransmitted data with a small amount of data can avoid waste of resources and achieve the effect of matching channels, thereby improving spectrum efficiency.
  • the second data may be initially transmitted or retransmitted by using at least one second process by using m-n resources remaining in the m consecutive time-frequency resources, thereby reducing resource fragmentation and further improving spectral efficiency of data transmission.
  • the time interval (which may be referred to as an absolute time interval) composed of k consecutive minimum scheduling time units can ensure the compatibility of the data transmission method with different systems.
  • FIG. 1A is a schematic flowchart of data transmission by using a HARQ transmission mechanism according to an embodiment of the present invention
  • FIG. 1B is a schematic diagram of a communication system according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a time-frequency resource multiplexing manner according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of data transmission by time division multiplexing resources in a TDD system according to an embodiment of the present invention
  • 5A is a schematic diagram of data transmission by using frequency division multiplexing resources in a TDD system according to an embodiment of the present invention
  • FIG. 5B is another schematic diagram of data transmission by using frequency division multiplexing resources in a TDD system according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of two processes multiplexing time-frequency resources according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a three-process multiplexed time-frequency resource according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of data transmission by using space division multiplexing resources in a TDD system according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of retransmitting data on a fixed number of minimum scheduling time units in a time domain according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of retransmitting data on a fixed number of time-frequencys in a TDD system according to an embodiment of the present invention
  • FIG. 11 is a schematic diagram of data transmission for fixed initial transmission and retransmission ratio in a TDD system according to an embodiment of the present invention.
  • FIG. 12 is a frequency-division duplex (FDD) system according to an embodiment of the present invention. Schematic diagram of data transmission under the system;
  • FIG. 13 is a schematic structural diagram of a first data transmission apparatus according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of a second data transmission apparatus according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • the flow of data transmission using the HARQ transmission mechanism is as shown in FIG. 1A.
  • the information bit sequence is subjected to channel coding to generate a coded bit sequence, and the coded bit sequence is stored in the HARQ buffer; according to the redundancy version (redundancy version, initial transmission or retransmission) RV) extracting the coded bit sequence from the HARQ buffer for rate matching to obtain a physical channel bit sequence; modulating the rational channel bit sequence to generate a physical channel symbol sequence; and mapping the physical channel symbol sequence to a corresponding time frequency Transfer on the resource.
  • redundancy version redundancy version, initial transmission or retransmission
  • the embodiment of the present invention proposes a solution based on the communication system 100 shown in FIG. 1B to improve the spectral efficiency of data transmission in the communication system.
  • the communication system 100 includes at least one base station, such as a base station 104.
  • the communication system further includes at least one User Equipment (UE) covered by the base station, for example, the UE 102.
  • UE User Equipment
  • the base station 104 and the UE 102 implement various communication functions by data transmission.
  • the communication system 100 may be a variety of radio access technology (RAT) systems, such as, for example, code division multiple access (code division multiple access, CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier frequency division multiple access ( Single carrier FDMA, SC-FDMA) and other systems.
  • RAT radio access technology
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency-division multiple access
  • Single carrier FDMA Single carrier FDMA
  • SC-FDMA single carrier frequency division multiple access
  • a CDMA system can implement wireless technologies such as universal terrestrial radio access (UTRA), CDMA2000, and the like.
  • UTRA may include wideband CDMA (WCDMA) technology and other CDMA variant technologies.
  • CDMA2000 can cover the interim standard (IS) 2000 (IS-2000), IS-95 and IS-856 standards.
  • the TDMA system can implement a wireless technology such as a global system for mobile communication (GSM).
  • GSM global system for mobile communication
  • An OFDMA system can implement such as evolved universal radio land access (evolved UTRA, E-UTRA), ultra mobile broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash OFDMA And other wireless technologies.
  • UTRA and E-UTRA are UMTS and UMTS evolved versions.
  • the various versions of 3GPP in long term evolution (LTE) and LTE-based evolution are new versions of UMTS that use E-UTRA.
  • the communication system 100 can also be applied to future-oriented communication technologies such as a 4.5G system or an NR (Next Radio) system.
  • the base station (for example, the base station 104) is a device deployed in the radio access network to provide a wireless communication function for the terminal.
  • the base station may include various forms of macro base stations, micro base stations (also referred to as small stations), relay stations, access points, and the like.
  • the name of the device with the function of the base station may be different.
  • eNB evolved NodeB
  • 3rd generation, 3G third generation
  • Node B Node B
  • the above-mentioned devices for providing wireless communication functions to terminals are collectively referred to as base stations.
  • a UE (e.g., UE 102) involved in embodiments of the present invention may include various handheld devices having wireless communication capabilities, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to a wireless modem.
  • the UE may also be referred to as a mobile station (MS), a terminal, a terminal equipment, and may also include a subscriber unit, a cellular phone, and a smart phone.
  • Phone wireless data card
  • PDA personal digital assistant
  • modem wireless modem
  • WLL Wireless local loop
  • MTC machine type communication
  • embodiments of the present invention provide a data transmission method as shown in FIG. 2.
  • the method is implemented by interacting between a first data transmission device located at the transmitting end and a second data transmission device located at the receiving end.
  • the data transmission method is applicable to uplink data transmission, and can also be applied to uplink data transmission, and can also be applied to device to device (D2D) data transmission.
  • the first data transmission device is the base station 104, and the second data transmission device is the UE 102; in the uplink data transmission, the first data transmission device is the UE 102, and the second data transmission device is the base station 104; In D2D data transmission, the first data transmission device is the UE 102 and the second data transmission device is another UE.
  • the embodiment of the present invention does not limit the application scenario.
  • the data transmission method includes:
  • step 202 the first data transmission device performs initial transmission of the first data by using the first process on the m consecutive time-frequency resources.
  • the second data transmission device receives the initial transmission data of the first process distributed over the m consecutive time-frequency resources.
  • the m consecutive time-frequency resources are composed of k consecutive minimum scheduling time units in the time domain.
  • m is a positive integer greater than or equal to 2
  • k is a positive integer.
  • the scheduler may schedule, and determine, multiple UEs in the cell according to the CSI information, the service type, the buffer size in the data queue, and the priority of the user to which the UE belongs.
  • the scheduler is a logical function module inside the base station.
  • the scheduler and the first data transmission device belong to the same physical device, and for the uplink data transmission and the D2D data transmission, the scheduler and the first data. Transmission devices belong to different physical devices.
  • the scheduler can determine the transport block size (TBS) according to the code modulation mode, the number of allocated resource blocks (RBs), and the size of m.
  • the first data transmission device acquires data from the queue buffer according to the determined TBS, adds a MAC header and a Cyclic Redundancy Check (CRC), determines whether to segment according to the data size, and adds in each data segment.
  • the CRC further inputs each data segment into a channel coding module as shown in FIG. 1A for encoding.
  • Common coding methods for encoding data channels are turbo coding and convolutional coding.
  • k consecutive minimum scheduling time units constitute an Absolute Time Interval.
  • the minimum scheduling time unit may also be referred to as time interval X (timeinverval X). That is, k minimum scheduling time units are included in each absolute time interval.
  • time interval X timeinverval X
  • Different communication systems may have different minimum scheduling time units, but different system absolute time intervals last the same length of time. Accordingly, each communication system can take a different value for k.
  • the second data transmission device sends the acknowledgement information of the first data after receiving the initial data of the first process distributed on the m consecutive time-frequency resources (k consecutive minimum scheduling time units). .
  • the first data transmission device receives the confirmation information of the first data.
  • the acknowledgement information includes acknowledgement (ACK), or negative-acknowledge (NACK).
  • the confirmation information is used to indicate m consecutive time-frequency resources. Whether the first data transmitted on the (k consecutive minimum scheduling time units) is correctly received. In the example of Fig. 2, the confirmation information is NACK.
  • the first data transmission apparatus retransmits the first data by using the first process on the n consecutive time-frequency resources of the m consecutive time-frequency resources according to the acknowledgement information, and is in the mn time-frequency.
  • the second data is initially transmitted or retransmitted by the at least one second process.
  • the second data transmission device receives the retransmission data of the first process and the initial transmission data or the retransmission data of the at least one second process.
  • the n consecutive time-frequency resources are composed of q consecutive minimum scheduling time units in the time domain.
  • q and n are positive integers and m is greater than n.
  • the m consecutive time-frequency resources may be multiplexed by the retransmission data of the first process and the initial transmission data or the retransmission data of the at least one second process in various manners for data transmission.
  • the multiplexing manner of m consecutive time-frequency resources may include one or any combination of the following: time division multiplexing, frequency division multiplexing, space division multiplexing, layer division multiplexing, code division multiplexing, and symbol multiplexing.
  • FIG. 3 is a schematic diagram showing time division multiplexing, frequency division multiplexing, and layer division multiplexing of time-frequency resources by two processes, respectively. The manner in which m consecutive time-frequency resources are allocated will be further described in conjunction with FIGS. 4 through 12.
  • step 208 after receiving the retransmission data of the first process and the data of the at least one second process, the second data transmission device feeds back the confirmation information of the first data retransmission and the confirmation information of the second data. .
  • the first data transmission device receives the confirmation information of the first data retransmission and the confirmation information of the second data.
  • the first data transmission device performs the next retransmission of the data until the acknowledgement information is ACK, indicating that the data has been received by the receiver.
  • the second data transmission device receives correctly.
  • the data transmission method of the embodiment of the present invention since the amount of data initially transmitted by the same data is greater than the amount of data to be retransmitted, it is ensured that the initial transmission data can include all information bits in the transmission fast, thereby avoiding unnecessary decoding and The overhead of feedback and the retransmission of data with a small amount of data can avoid waste of resources and achieve the effect of matching channels, thereby improving spectrum efficiency.
  • the second data may be initially transmitted or retransmitted by using at least one second process by using m-n resources remaining in the m consecutive time-frequency resources, thereby avoiding resource fragmentation and further improving spectral efficiency of data transmission.
  • the absolute time interval is designed to ensure compatibility of the data transmission method with different systems.
  • FIG. 4 is a schematic diagram of data transmission by time division multiplexing resources according to an embodiment of the present invention.
  • the embodiment shown in Figure 4 is applicable to a TDD system. 4 illustrates the data transmission method of the present invention by taking the following line transmission as an example. However, the present invention is not limited thereto, and the data transmission method is also applicable to uplink data transmission or D2D data transmission.
  • the duration of a single absolute time interval is 1 ms
  • k is equal to 4
  • the minimum round trip time of data transmission is assumed (round trip time) , RTT) is the 4 minimum scheduling time units.
  • Fig. 4 seven absolute time intervals are shown, with gaps (Gap) and fields of uplink control information being provided between adjacent two absolute time intervals.
  • the receiving end uniformly feeds back the acknowledgment information of the data transmitted by each process to the transmitting end, and the transmitting end obtains the acknowledgment information of the data transmitted by each process by using the uplink control information.
  • the sender In the first absolute time interval numbered 0, the sender is in 4 consecutive minimum scheduling time sheets.
  • the first data is initially transmitted through process 0.
  • the receiving end After receiving the first data initially transmitted by process 0 on the four consecutive minimum scheduling time units, the receiving end performs channel estimation, channel equalization, demodulation, merging, decoding, etc. on the first data, and feeds back to the transmitting end. Confirmation information of the first data transmitted through process 0.
  • the acknowledgment information of the first data transmitted through the process 0 is NACK.
  • the acknowledgment information of the first data that is initially transmitted through process 0 is NACK.
  • the transmitting end performs the first retransmission of the first data by process 0 on one minimum scheduling time unit.
  • the first data is first transmitted or retransmitted by process 2 on the remaining 3 consecutive minimum time units.
  • the receiving end receives data transmitted on four consecutive minimum scheduling time units (including the first data retransmitted by process 0 on one minimum scheduling time unit and the first stage of process 2 on three consecutive minimum time units) After transmitting or retransmitting the second data, performing channel estimation, channel equalization, demodulation, merging, decoding, etc. on the first data and the second data, respectively, and transmitting data through process 0 and process 2 to the transmitting end respectively. Confirmation information.
  • the acknowledgment information of the first data retransmitted by process 0 is NACK
  • the acknowledgment information of the second data initially transmitted or retransmitted by process 2 is NACK.
  • the acknowledgement information of the first data retransmitted by process 0 is a NACK, and the sender needs to retransmit the first data for the second time; and the acknowledgement information of the second data that is initially transmitted or retransmitted by process 2 is a NACK, and is sent.
  • the second data also needs to be retransmitted.
  • the transmitting end performs the second retransmission of the first data by the process 0 on the 2 minimum scheduling time units, and passes the process 2 on the remaining 2 consecutive minimum time units. Retransmit the second data.
  • the receiving end receives data transmitted on 4 consecutive minimum scheduling time units (including the first data retransmitted by process 0 on the 2 minimum scheduling time units and the process 2 in 2 consecutive minimum time units) After transmitting the second data, performing channel estimation, channel equalization, and first, respectively on the first data and the second data. Demodulation, merging, decoding, etc., and feedback information of the data transmitted by process 0 and process 2 are respectively fed back to the transmitting end.
  • the acknowledgment information of the first data retransmitted by process 0 is ACK
  • the acknowledgment information of the second data retransmitted by process 2 is ACK.
  • the received confirmation message is ACK, it means that the data has been received correctly.
  • the second data was first transmitted through process 2.
  • the second data is retransmitted through process 2.
  • the absolute time interval design can also achieve better channel estimation with a lower reference signal (RS) density, reducing the overhead of the uplink and downlink switching gap.
  • RS reference signal
  • the even-numbered absolute time interval is used for data transmission by a process with an even process number
  • the odd-numbered absolute time interval is used for data transmission by a process with an odd process number. Similar to synchronous HARQ, the timing is clear and concise, which can reduce control overhead and reduce scheduling complexity.
  • FIG. 5A and FIG. 5B are schematic diagrams of data transmission by frequency division multiplexing resources according to another embodiment of the present invention.
  • the embodiment shown in Figures 5A and 5B is also applicable to a TDD system.
  • the absolute time interval is allocated four resource blocks (RBs) in the frequency domain.
  • the first data initially transmitted through process 0 occupies all the frequency domain resources of 4 RBs.
  • the acknowledgment information of the first data that is initially transmitted through process 0 is NACK.
  • the first data retransmitted by process 0 is transmitted together with the second data initially transmitted by process 2, and each occupied. Frequency domain resources of 1 RB and 3 RB. Since the first data retransmitted by process 0 and the acknowledgment information of the second data that is first transmitted through process 2 are both NACK, in the absolute time interval numbered 4, the first data retransmitted by process 0 and the pass process 2 The retransmitted second data is transmitted together, each occupying 2 RB of frequency domain resources.
  • the time-frequency resource occupied by the initial transmission is 4 RB resources, and the resources of 4 RBs are 4 consecutive times in the time domain.
  • the resources of the remaining 3 RBs in the absolute interval of the number 2 are used for initial transmission of the second data by the process 2;
  • the second data was retransmitted.
  • the number of RBs allocated in the frequency domain and the number of minimum scheduling time units included in the time domain are not limited to the example of FIG. 5A, and may be changed according to actual needs.
  • 1) the absolute time interval is unchanged in the RB resources allocated in the frequency domain, and only one minimum scheduling time unit may be included in the time domain. At this time, if the RTT of the data transmission is 4 minimum scheduling time units, 3 independent other processes can be inserted between the processes 0.
  • the number of RBs allocated in the first absolute time interval may be 10, and the number of RBs allocated in the second absolute time interval may be 8.
  • the resource locations of the m time-frequency resources in each frequency interval in the frequency domain are also variable.
  • m time-frequency resources can be discrete in the frequency domain, as shown in Figure 5B.
  • the m consecutive time-frequency resources in the present application may also be referred to as m time-frequency resources.
  • the time-frequency resources corresponding to the k minimum scheduling time units are multiplexed by the transmission data of the plurality of processes in the absolute time interval
  • the time-frequency resources may be allocated to the plurality of processes based on different allocation modes.
  • time-frequency resources corresponding to the k minimum scheduling time units in the absolute time interval are time-division multiplexed by the transmission data of multiple processes:
  • the k minimum scheduling time units are used for transmitting the initial transmission of the small process number in the next transmission.
  • Data if the acknowledgment information of one process is NACK, the acknowledgment information of another process data is ACK, the q minimum scheduling time unit is used for transmitting retransmission data, and the kq minimum scheduling time unit is used for transmission at the next transmission.
  • Data is transmitted, and the large process number data is transmitted after the small process number data is transmitted first; if the acknowledgement information of the two process data is NACK, the next transmission is performed.
  • the minimum scheduling time unit is used to transmit small process number data.
  • the minimum scheduling time unit is used to transmit large process number data, and the large process number data is transmitted after the small process number data is transmitted first.
  • time-frequency resources corresponding to the k minimum scheduling time units in the absolute time interval are frequency-multiplexed by the transmission data of multiple processes:
  • the acknowledgment information of the data of both processes is ACK, 1 RB or q at the next transmission.
  • the RBs are used to transmit the initial data of the small process number; if the acknowledgment information of one process is NACK, the acknowledgment information of the other process data is ACK, and the RBs of the p RBs are used for transmission in the next transmission.
  • the data is transmitted, and the remaining RBs of the p RBs are used to transmit the initial data, and the small process number data is transmitted first, and the large process number data is transmitted; if the acknowledgement information of the two process data is NACK, the next transmission is performed.
  • RBs transmit small process number data, The RBs are used to transmit large process number data, and the large process number data is transmitted after the small process number data is transmitted first.
  • Figures 6 and 7 show examples of multiplexing time-frequency resources for two processes and three processes, respectively. 6 and 7 are applicable to the case of time division multiplexing, and are also applicable to the case of frequency division multiplexing.
  • the absolute time interval includes four minimum scheduling time units, and the two processes are process 0 and process 2, respectively. If the data transmitted through process 0 and the data transmitted through process 2 are both data initial transmission blocks, all resources corresponding to the four minimum scheduling time units are used for process 0 for initial transmission. If the data transmitted through process 0 is a retransmission block and the data transmitted through process 2 is an initial transmission block, process 0 occupies 1/4 of the resources, such as a time-frequency resource corresponding to one minimum scheduling time unit or one RB corresponding. Time-frequency resources, while process 2 occupies 3/4 resources, such as time-frequency resources corresponding to 3 minimum scheduling time units or time-frequency resources corresponding to 3 RBs.
  • process 0 occupies 3/4 of the resources, and process 2 occupies 1/4 of the resources. If the data transmitted through process 0 and the data transmitted through process 2 are both data retransmission blocks, the two processes divide the time-frequency resources. For example, the two processes each occupy 2 time-frequency resources or 2 RBs corresponding to the minimum scheduling time unit. Corresponding time-frequency resources.
  • the absolute time interval includes six minimum scheduling time units, and the three processes are process 0, process 2, and process 4, respectively. If only one process in the three processes is an initial data transmission block, for example, process 0, all resources corresponding to the six minimum scheduling time units are used for process 0 for initial transmission. If process 0 needs to be retransmitted, 1/6 of the resources are used for process 0 for retransmission, and 5/6 of resources are used for process 2 for initial transmission. If you enter Both process 0 and process 2 need to be retransmitted, and each allocated 1/6 of resources is used for process 0 and process 2 for retransmission, and 4/6 of resources are used for process 4 for initial transmission. If all three processes need to be retransmitted, the time-frequency resources are equally divided, and each of the allocated resources is used for process 0, process 2, and process 6 for retransmission.
  • the coupling relationship between the timing relationship of the process and the process can be fixed. Only one instruction number of the process number can be used to derive information about other process numbers in the absolute time interval for easy control.
  • time-frequency resources corresponding to the k minimum scheduling time units in the absolute time interval are spatially multiplexed by the transmission data of multiple processes:
  • each stream can be data-transmitted according to the design of any of the above embodiments.
  • the time-frequency resource used for initial transmission or retransmission of the first data is also used for initial transmission or retransmission of the third data by the third process.
  • the first data initial transmission part or the retransmission part may be spatially multiplexed with the initial transmission part or the retransmission part of any one or more data (ie, the third data) on several minimum scheduling time units.
  • the two streams perform space division multiplexing on the time-frequency resources corresponding to the absolute time interval in units of minimum scheduling time units.
  • the first two pieces of data in the second stream that were originally transmitted through process 4 are spatially multiplexed with the two parts of the first stream that are retransmitted by process 0 for the second time.
  • the second part of the data in the second stream that was first transmitted through process 4 is spatially multiplexed with the two parts of the data that are retransmitted by process 2 in the first stream.
  • the difference between the process ID of the third process and the process ID of the first process is not fixed. That is to say, the data blocks of the two streams belong to mutually independent processes, and there are independent process numbers, and the process numbers are not bound to each other. Therefore, the flexibility of scheduling two streams is further improved.
  • the data is retransmitted by a fixed number of time-frequency resources.
  • Figure 9 shows a schematic diagram of retransmitting data on a fixed number of minimum scheduling time units in the time domain.
  • the difference between FIG. 9 and FIG. 4 is that when the acknowledgment information of the first data transmitted through process 0 is NACK, whether it is the first retransmission or the second retransmission, it is only passed on one minimum scheduling time unit.
  • the retransmitted data is fixed using q minimum scheduling time units.
  • the number of minimum scheduling time units used to initially transmit other data is determined by the remaining resources. For example, in FIG. 9, when the first data transmitted through process 0 needs to be retransmitted, the remaining 3 minimum scheduling time units can be used to perform initial transmission of the second data through process 2. When both the first data transmitted through process 0 and the second data transmitted through process 2 need to be retransmitted, the remaining 2 minimum scheduling time units can be used to initiate other data through process 4.
  • the maximum number of retransmissions should be set in advance.
  • the maximum number of retransmissions does not exceed the number of minimum scheduling time units (ie, k) contained in one absolute time interval.
  • the maximum number of retransmissions is three. Therefore, if the acknowledgement information received after the third retransmission of the first data by the process 0 on the first minimum scheduling time unit in the absolute time interval of number 6 is still NACK, the transmission fails. , no longer the next retransmission.
  • the maximum number of processes included in each absolute time interval is maximized.
  • the number of retransmissions plus one and the smaller of the minimum number of scheduling time units (i.e., k) contained in an absolute time interval are determined.
  • the data is retransmitted on the fixed-time minimum scheduling time unit in the time domain, and will not be described here.
  • Figure 10 shows a schematic diagram of retransmitting data at a fixed number of time-frequency.
  • the difference between FIG. 10 and FIG. 9 is that when the acknowledgment information of the first data transmitted through process 0 is NACK, whether it is the first retransmission or the second retransmission, all the ones in the minimum scheduling time unit are not occupied.
  • the frequency domain resource retransmits the first data through process 0, but only a part of the frequency domain resources in one minimum scheduling time unit retransmits the first data through process 0.
  • the data retransmitted by process 0 is distributed on the first two RB resources in the first RB of the first minimum scheduling time interval, the absolute time.
  • the remaining time-frequency resources in the interval are used to initially transmit the second data through process 2.
  • the first data retransmitted by process 0 and the second data retransmitted by process 2 are respectively distributed at the first minimum.
  • the remaining time-frequency resources in the absolute time interval are initially transmitted to the process 4 .
  • the maximum number of processes included in an absolute time interval is +1 of the maximum number of retransmissions. Since the multi-process multiplexing resource in the absolute time interval is a hybrid multiplexing method including both time domain division and frequency domain division, the example of FIG. 10 can also be regarded as an initial transmission to an absolute time interval.
  • the block is punctured to transmit a retransmitted block. Therefore, the size of the retransmitted data block is smaller, so that a larger ratio of the initial transmission data and the retransmission data and a more accurate tracking channel effect can be obtained.
  • Figures 9 and 10 show two examples of the amount of fixed retransmission data.
  • the ratio between the amount of initial data and the amount of retransmitted data may be further fixed.
  • the ratio between the amount of initial data and the amount of retransmitted data is set to 2:1.
  • the sender waits for the next data to be retransmitted, for example, the data retransmitted by process 2 in FIG.
  • the data retransmitted by process 0 and the data retransmitted by process 2 are multiplexed with the time-frequency resources in the absolute time interval to maintain the initial and retransmitted data amount of 2:1. relationship.
  • the maximum waiting delay can be set in the actual system to avoid waiting too long. It should be noted that the ratio of the initial transmission and the retransmission ratio of 2:1 in FIG. 11 is only an indication, and in the case where the delay requirement is not high, the maximum ratio can be set to 4:1. In this way, the retransmission has a smaller granularity and can achieve greater throughput gain.
  • FIG. 12 is a schematic diagram of data transmission by time division multiplexing resources according to an embodiment of the present invention.
  • the embodiment shown in Figure 12 is suitable for use in an FDD system.
  • the difference between Fig. 12 and Fig. 4 is that the transmitting end and the receiving end operate on different frequencies.
  • the time-frequency resources corresponding to each successive absolute time interval can be used for uplink data transmission or downlink data transmission.
  • the specific mechanism for transmitting data is similar to that of the TDD system, and the manner of allocating resources in the TDD system described in FIG. 4 to FIG. 11 is also applicable to the FDD system, and details are not described herein again.
  • the above data transmission mechanism can improve spectral efficiency, and the absolute time interval design can achieve better compatibility with other TDD systems.
  • the foregoing describes a scheme for data transmission using various resource multiplexing methods and resource allocation manners in different systems in combination with specific embodiments.
  • the resource multiplexing mode and/or the resource allocation mode Before the data transmission, it is necessary to know the resource multiplexing mode and/or the resource allocation mode to be used for data transmission, and inform the second data transmission device of the receiving end of the resource multiplexing mode and/or resource allocation mode to be used for data transmission.
  • a rule may be preset in the first data transmission device at the transmitting end and the second data transmission device at the receiving end, where the preset rule defines a resource multiplexing manner and/or a resource allocation manner to be adopted for data transmission.
  • the first data transmission device at the transmitting end may send control information to the second data transmission device at the receiving end, where the control information carries information indicating a resource multiplexing manner and/or a resource allocation manner.
  • the control information is downlink control information (DCI) sent by the base station to the UE.
  • DCI downlink control information
  • UCI uplink control information
  • control information can be used to control data transmission within a minimum scheduled time unit.
  • control information can be used to control the initial transmission of data (such as the first data described above), or to control the retransmission of data or to simultaneously control the initial transmission and retransmission of data.
  • DCI DCI as an example:
  • Control information is used to control data transmission within a minimum scheduling time unit:
  • each minimum scheduling time unit in an absolute time interval is scheduled using one DCI.
  • the resource multiplexing mode and the resource allocation mode are all indicated by preset rules or other implicit or semi-static indication information, then for space division multiplexing,
  • the DCI only needs to indicate the process number information of one flow, and the process ID of the other flow can be calculated by an existing process number.
  • the DCI may indicate the process number information of two independent processes, and may also indicate the number of Time Interval X numbers, the number of small scheduling time units, the resource multiplexing mode, and the resource points included in an absolute time interval.
  • the allocation method enables more dynamic and flexible scheduling.
  • control information is used for initial transmission of control data (such as the first data described above), or retransmission of control data or simultaneous control of initial transmission and retransmission of data:
  • a DCI can be used to schedule data transmitted by all processes within an absolute time interval. If the number of minimum scheduling time units included in an absolute time interval, resource multiplexing mode and resource allocation mode are indicated by preset rules or other implicit or semi-static indication information, the coupling relationship between processes is definite. For example, when the time-frequency resource is multiplexed and allocated according to the example of FIG. 6, process 0 can be regarded as a "main process", and process 2 can be regarded as a "secondary process"; only when the acknowledgement information of process 0 is NACK or process 2 When the acknowledgment information is NACK, the process 2 allocates resources for data transmission.
  • the DCI only needs to indicate the process ID information of the "main process", the MCS of the "main process”, whether the data is the initial transmission, the RV, and the MCS of the "secondary process".
  • the initial transmission RV and other information, there is no need to indicate the process number information of the "secondary process”.
  • the DCI needs to indicate the MCS of the s processes, whether the data is the initial transmission, the RV, and the process ID information of a "main process”.
  • the value of s cannot be too high.
  • some information of the "secondary process” (such as MCS, etc.) may not be required, but the same value as the "main process” is used.
  • DCI only needs to indicate the process number information of the "main process” on one of the flows, the "secondary process” of the flow, and the “main process” and “secondary process” on the other flow.
  • the process number information does not need to be indicated and can be calculated by the "main process” process number with the indication.
  • control information when used to control the initial transmission of data, or to control the retransmission of data or to simultaneously control the initial transmission and retransmission of data (eg, using a DCI scheduling to pass all the absolute time intervals)
  • the data transmitted by the process is further reduced in signaling overhead by using one DCI for scheduling with each minimum scheduling time unit.
  • the time-frequency resource is multiplexed and allocated according to the example of FIG. 11, since it is impossible to determine which two processes transmit the acknowledgment information to be NACK, the data transmitted by which two processes needs to be multiplexed.
  • the resources of the absolute time interval are retransmitted.
  • the DCI needs to add signaling to indicate the process number information of each independent process.
  • the DCI needs to add a cell.
  • one or more of the following fields may be selected to indicate:
  • the number of resource allocation rules (as shown in FIG. 6 or FIG. 7) is indicated by the field "Allocation Rule Indicator". If the number of rules is R, the field AllocationRule Indicator occupies the log 2 R bit. According to such a rule, the number of time-frequency resources/the number of minimum scheduling time units in which the initial transmission data or the retransmission data are distributed can be determined.
  • the pre-defined small process number data occupies the resource first, and the large process number data occupies the resource.
  • the number of time-frequency resources/minimum scheduling distributed by the initial transmission data or the retransmission data is indicated by the field "Number of Data Parts" (TTI Length). The number of time units.
  • Ni can be defined in two ways: one is the number of time-frequency resources distributed by the initial transmission data or the retransmission data, the absolute value of the number of minimum scheduling time units, and the other is the initial data or the retransmission data. The relative proportion of the number of distributed time-frequency resources/the number of minimum scheduling time units.
  • the resource allocation mode may be determined.
  • the field Multiplex Pattern Indicator may not be required to indicate the resource multiplexing mode.
  • the preset rule in the first data transmission device on the transmitting end and the second data transmission device on the receiving end may define RV information; or the control information sent by the first data transmission device on the transmitting end to the second data transmission device on the receiving end. Also carries RV information.
  • the first data device can obtain the RV information by any one of the above two methods or other manners.
  • the RV information may be used to control the initial transmission of data (such as the first data described above) or to control the retransmission of control data. That is to say, each part of the data transmitted or retransmitted corresponds to an independent RV.
  • a field may be added to the control information to indicate RV information. In this way, the receiving end can merge all the received data through the RV information.
  • the RV information is used to control data transmission within a minimum scheduling time unit.
  • a "New data indicator” field and a "redundancy version” field may be added to the control information.
  • the New data indicator field is used to indicate whether to transmit data or retransmit data
  • the redundancy version field is used to indicate the RV version number.
  • the New data indicator field indicates initial data
  • the corresponding RV version The number is 0, the initial data contains all information bits, and the redundancy version field can default to 0, no indication is required.
  • the redundancy version field is used to indicate the RV version number of the data transmitted within the minimum scheduling time unit.
  • a corresponding New data indicator field and a redundancy version field may be added to each stream in the control information.
  • the redundancy version field may be used to indicate an offset of the RV data position when the number of retransmissions is greater than 4 (or an offset of the RV version number). In this way, it can be avoided that the data that continues to be retransmitted after the number of retransmissions is greater than 4 times is the same as the previously retransmitted data. Or, when the maximum number of retransmissions K>4, the number of digits in the redundancy version field is increased to Bit.
  • the data transmission method provided by the embodiment of the present invention is introduced from the perspective of the interaction between the network elements and the network elements.
  • each network element such as a UE, a base station, etc.
  • each network element includes hardware structures and/or software modules corresponding to each function.
  • the present invention 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 for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.
  • FIG. 13 shows a schematic structural view of a first data transmission device.
  • the first data transmission device includes a receiving unit 1304 and a transmitting unit 1302.
  • receiving unit 1304 is implemented by a receiver.
  • the transmitting unit 1302 is implemented by a transmitter.
  • the sending unit 1302 is configured to perform initial transmission on the m consecutive time-frequency resources by using a first process, where the m consecutive time-frequency resources are in the time domain by k consecutive minimum scheduling time units. composition.
  • the receiving unit 1304 is configured to receive the confirmation information of the first data. For example, the confirmation information is used to indicate whether the first data initially transmitted on the k consecutive minimum scheduling time units is correctly received.
  • the sending unit 1302 is further configured to retransmit the first data by using the first process on the n consecutive time-frequency resources of the m consecutive time-frequency resources according to the acknowledgement information, and in the mn
  • the second data is initially transmitted or retransmitted by the at least one second process on the time-frequency resource.
  • the n consecutive time-frequency resources are composed of q consecutive minimum scheduling time units in the time domain, m is a positive integer greater than or equal to 2, and k, q, and n are positive integers and m is greater than n.
  • the sending unit 1302 is further configured to send control information.
  • the control information is used to control initial transmission of the first process, or control retransmission of the first process or simultaneously control initial transmission and retransmission of the first process; or, the control information is used to control Data transfer within one of the minimum scheduled time units.
  • the first data transmission device further includes a processing unit 1306.
  • processing unit 1306 is implemented by a processor.
  • the processing unit 1306 is configured to obtain redundancy version RV information.
  • the RV information is used to control initial transmission of the first process or control retransmission of the first process; or the RV information is used to control data transmission in one of the minimum scheduling time units.
  • the processing unit 1306 is further configured to obtain a multiplexing manner in which the first process and the second process multiplex the m consecutive time-frequency resources, where the multiplexing manner includes the following One or any combination: time division multiplexing, frequency division multiplexing, space division multiplexing, layer division multiplexing, code division multiplexing, and symbol multiplexing.
  • the time-frequency resource used for sending the initial data of the first process or retransmitting the data is further used.
  • the initial transmission or the retransmission data of the third process is sent, wherein a difference between the process ID of the third process and the process ID of the first process is not fixed.
  • the value of k is k1; for the second system, the value of k is k2, where k1 is different from k2, and k1 and k2 are positive integers, and
  • the k1 minimum scheduling time units in the first system last for the same time as the k2 minimum scheduling time units in the second system.
  • Fig. 14 is a view showing the configuration of a second data transmission device.
  • the second data transmission device includes a receiving unit 1402 and a transmitting unit 1404.
  • the receiving unit 1402 is implemented by a receiver.
  • Transmitting unit 1404 is implemented by a transmitter.
  • the receiving unit 1402 is configured to receive retransmission data of the first process and data of the at least one second process, where the data of the at least one second process includes initial data or retransmission data of the at least one second process.
  • the sending unit 1404 is configured to feed back the confirmation information of the first process and the at least one second process after the receiver receives the retransmission data of the first process and the data of the at least one second process. Confirmation information.
  • the retransmission data of the first process is distributed among n consecutive time-frequency resources in m consecutive time-frequency resources, and the m consecutive time-frequency resources are k consecutive minimum scheduling in the time domain.
  • the time unit is composed; the data of the at least one second process is distributed in mn time-frequency resources, and the n consecutive time-frequency resources are composed of q consecutive minimum scheduling time units in the time domain, where m is greater than A positive integer equal to 2, k, q, and n are positive integers and m is greater than n.
  • the receiving unit 1402 is further configured to receive control information.
  • the control information is used to control initial transmission of the first process, or control retransmission of the first process or simultaneously control initial transmission and retransmission of the first process; or, the control information is used to control Data transfer within one of the minimum scheduled time units.
  • the control information further includes RV information.
  • the RV information is used for control Initial transmission of the first process, or control of retransmission of the first process; or, the RV information is used to control data transmission within one of the minimum scheduling time units.
  • the time-frequency resource used to send the retransmission data of the first process or the data of the at least one second process is further used to send initial transmission or retransmission data of the third process, where The difference between the process number of the three processes and the process ID of the first process or the second process is not fixed.
  • the value of k is k1; for the second system, the value of k is k2, where k1 is different from k2, and k1 and k2 are positive integers, and
  • the k1 minimum scheduling time units in the first system last for the same time as the k2 minimum scheduling time units in the second system.
  • the first data transmission device is the base station 104 (such as the base station in FIG. 15), and the second data transmission device is the UE 102 (such as the UE in FIG. 16);
  • the first data transmission device is the UE 102 (such as the UE in FIG. 16)
  • the second data transmission device is the base station 104 (such as the base station in FIG. 15);
  • the first data transmission device is the UE 102 ( As in the UE in FIG. 16, the second data transmission device is another UE (such as the UE in FIG. 16).
  • FIG. 15 is a schematic diagram showing a possible structure of a base station involved in the above embodiment.
  • the base station can be the base station 104 as shown in Figure 1B.
  • the base station shown includes a transceiver 1502 and a controller/processor 1504.
  • the transceiver 1502 can be configured to support the base station to transmit and receive information with the UE in the foregoing embodiment, and to support radio communication between the UE and other UEs.
  • the controller/processor 1504 can be used to perform various functions for communicating with a UE or other network device.
  • the uplink signal from the UE is received via the antenna, coordinated by the transceiver 1502, and further processed by the controller/processor 1504 to recover the traffic data and signaling information transmitted by the UE.
  • the message is processed by controller/processor 1504 and mediated by transceiver 1502 to generate a downlink signal and transmitted to the UE via the antenna.
  • the transceiver 1502 is also operative to perform the data transmission method as described in the above embodiments, for example, the transceiver includes a transmitter and a receiver.
  • the transmitter and receiver are configured to perform the functions of the first data transmission device of Figures 2-12.
  • the transmitter and receiver are configured to perform the functions of the second data transmission device of Figures 2-12.
  • the controller/processor 1504 may also be used to perform the processes involved in the base station of Figures 2 through 12 and/or other processes for the techniques described herein.
  • the base station can also include a memory 1506 that can be used to store program codes and data for the base station.
  • the base station may further include a communication unit 1508 for supporting the base station to communicate with other network entities. It will be appreciated that Figure 15 only shows a simplified design of the base station. In practical applications, the base station may include any number of transmitters, receivers, processors, controllers, memories, communication units, etc., and all base stations that can implement the present invention are within the scope of the present invention.
  • FIG. 16 shows a simplified schematic diagram of one possible design structure of a UE involved in the above embodiment, and the UE may be the UE 102 as shown in FIG. 1B.
  • the UE includes a transceiver 1604, a controller/processor 1606, and may also include a memory 1608 and a modem processor 1602.
  • Transceiver 1604 conditions (e.g., analog conversion, filtering, amplifying, upconverting, etc.) the output samples and generates an uplink signal that is transmitted via an antenna to the base station described in the above embodiments.
  • the antenna receives the downlink signal transmitted by the base station in the above embodiment.
  • Transceiver 1604 conditions (eg, filters, amplifies, downconverts, digitizes, etc.) the signals received from the antenna and provides input samples.
  • encoder 1612 receives the traffic data and signaling messages to be transmitted on the uplink and processes (e.g., formats, codes, and interleaves) the traffic data and signaling messages.
  • Modulator 1614 further processes (eg, symbol mapping and modulation) The encoded service data and signaling messages and provide output samples.
  • Demodulator 1618 processes (e.g., demodulates) the input samples and provides symbol estimates.
  • the decoder 1616 processes (e.g., deinterleaves and decodes) the symbol estimate and provides decoded data and signaling messages that are sent to the UE.
  • Encoder 1612, modulator 1614, demodulator 1618, and decoder 1616 may be implemented by a composite modem processor 1602. These units are processed according to the radio access technology employed by the radio access network (e.g., access technologies of LTE and other evolved systems).
  • transceiver 1604 includes a transmitter and a receiver.
  • the transmitter and receiver are configured to perform the functions of the second data transmission device of Figures 2-12.
  • the transmitter and receiver are configured to perform the functions of the first data transmission device of Figures 2-12.
  • the UE at the transmitting end is configured to perform the functions of the first data transmission device in FIGS. 2 to 12
  • the UE at the receiving end is configured to perform the second data transmission device in FIGS. 2 to 12.
  • the controller/processor 1606 can also be used to perform the processes involved in the UE of FIGS. 2-12 and/or other processes for the techniques described herein.
  • Memory 1608 is for storing program code and data for the UE.
  • the controller/processor for performing the above base station, UE, base station or control node of the present invention may be a central processing unit (CPU), a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), and an on-site Program 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 steps of the method or algorithm described in connection with the present disclosure may be implemented in a hardware manner. Now, it can also be implemented by means of a processor executing software instructions.
  • the software instructions may be comprised of corresponding software modules that may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable hard disk, CD-ROM, or any other form of storage well 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 user equipment.
  • the processor and the storage medium may also reside as discrete components in the user equipment.
  • the second data of the second process and the first data of the first process may be data of the same user, or may be data of different users.
  • m time-frequency resources may be discrete in the frequency domain.
  • m consecutive time-frequency resources may also be referred to as m time-frequency resources.
  • the functions described herein can be implemented in hardware, software, firmware, or any combination thereof.
  • the functions may be stored in a computer readable medium or transmitted as one or more instructions or code on a computer readable medium.
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a general purpose or special purpose computer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

本发明涉及无线通信技术领域，提供了一种数据传输方法。方法公开了发送设备在m个时频资源上通过第一进程对第一数据进行初传，接收第一数据的确认信息，根据确认信息，在m个时频资源中的n个连续的时频资源上通过所述第一进程对所述第一数据进行重传，并在m-n个时频资源上通过至少一个第二进程对第二数据进行初传或重传。其中，m个时频资源在时域上由k个连续的最小调度时间单元组成，n个时频资源在时域上由q个连续的所述最小调度时间单元组成，m为大于等于2的正整数，k、q和n为正整数且m大于n。通过本实施例提供的方案，可以减少资源碎片，以提高数据传输的频谱效率，且该数据传输方法对各系统都能兼容。

Description

数据传输方法、数据传输装置和通信系统
本申请要求于2016年08月09日提交中国专利局、申请号为PCT/CN2016/094234、发明名称为“数据传输方法、数据传输装置和通信系统”的PCT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
本发明涉及无线通信技术领域，尤其涉及一种数据传输方法、数据传输装置和通信系统。
背景技术
长期演进(long term evolution，LTE)系统中的上行数据和下行数据分别由物理上行共享信道(physical uplink shared channel，PUSCH)和物理下行共享信道(physical downlink shared channel，PDSCH)承载。为了确保数据传输的可靠性和传输效率，LTE系统采用了以下两种关键技术：自适应调制编码(adaptive modulation and coding，AMC)和混合自动重传请求(hybridautomatic repeat request，HARQ)。
AMC是根据信道状态信息(channel state information，CSI)确定数据传输的调制和编码方式(modulation and coding scheme，MCS)的过程，其中CSI是根据参考信号(reference signals，RS)测量估计得到的。对于上行通信，基站首先根据用户设备(user equipment，UE)发送的RS测量估计得到上行CSI，然后根据CSI确定上行数据通信的MCS，最后通过下行控制信道通知UE；而对于下行通信，基站首先发送RS给UE，UE利用此RS测量估计得 到下行CSI并上报给基站，最后基站根据获得的CSI确定下行数据通信的MCS。当前LTE系统的PUSCH和PDSCH一般通过控制初传误块概率(initialblock error rate,IBLER)目标值(例如10％)来影响MCS的选择。
为了数据的可靠传输，LTE系统在AMC的基础上引入了HARQ技术。HARQ是将前向纠错编码(forward error correction，FEC)与自动重传请求(automatic repeat request，ARQ)相结合的技术，接收设备通过FEC技术能够纠正一部分错误数据，对于不能纠正的错误数据包，接收设备向发送设备请求重传原传输块(transport block，TB)的数据。为了让采用HARQ技术的发送设备和接收设备之间能够进行连续的数据传输，可以引入多HARQ进程机制，当一个HARQ进程的数据在等待接收端的反馈的时候，可以通过其它HARQ进程继续进行数据传输。
在实际的LTE系统中，由于测量估计算法的非理想而导致无法得到精确的CSI，同时由于从测量CSI到数据传输之间存在时延导致基于该CSI所选择的MCS与数据传输时的信道不匹配。上述问题在高速移动等信道时变性强的场景或在时分双工(time-division duplex，TDD)等干扰快速变化的场景尤为严重。因此，当前LTE系统中的HARQ仍存在很大的频谱效率提升空间。
发明内容
本申请描述了一种数据传输方法、数据传输装置和通信系统。
第一方面，本申请的实施例提供一种数据传输方法，该方法包括：在m个连续的时频资源上通过第一进程对第一数据进行初传，其中，m个连续的时频资源在时域上由k个连续的最小调度时间单元组成；接收第一数据的确认信 息；根据确认信息，在m个连续的时频资源中的n个连续的时频资源上通过第一进程对第一数据进行重传，并在m-n个时频资源上通过至少一个第二进程对第二数据进行初传或重传，其中，n个连续的时频资源在时域上由q个连续的最小调度时间单元组成。其中，m为大于等于2的正整数，k、q和n为正整数且m大于n。
本申请的实施例中第二进程第二数据和第一进程第一数据可以为同一用户数据也可以为不同用户数据。当第二进程第二数据和第一进程第一数据为同一用户数据时，k>0；当第二进程第二数据和第一进程第一数据为不同用户数据时，k>1。
此外，每个时间间隔的m个时频资源在频域上的资源位置也是可变的。换句话说，m个时频资源在频域上可以是离散的。当m个时频资源在频域上是离散的情况下，m个连续的时频资源也可称为m个时频资源。
通过本实施例提供的方案，由于重传第一数据所采用的时频资源要小于初传第一数据所采用的资源，既可以保证初传数据能够包含传输快中所有的信息比特，避免不必要的译码和反馈的开销，数据量较小的重传数据又可以避免资源浪费、实现匹配信道的效果，进而实现频谱效率的提升。此外，可以利用m个连续的时频资源中剩余的m-n个资源通过至少一个第二进程对第二数据进行初传或重传，从而减少资源碎片，进一步提高数据传输的频谱效率。此外，k个连续的最小调度时间单元组成的时间间隔(可称为绝对时间间隔)，可以保证该数据传输方法对各个不同系统的兼容性。
该数据传输方法适用于下行数据传输、上行数据传输、或设备到设备device to device，D2D)的数据传输。例如，在下行数据传输中，该方法可由 基站来执行；在上行数据传输或D2D数据传输中，该方法可由用户设备来执行。
在一个可能的设计中，该方法还包括：发送控制信息。控制信息用于控制第一进程的初传、或者控制第一进程的重传或者同时控制第一进程的初传和重传。或者，控制信息用于控制在一个最小调度时间单元内的数据传输。
在一个可能的设计中，该方法还包括：获得冗余版本RV信息。RV信息用于控制第一进程的初传、或者控制第一进程的重传。或者，RV信息用于控制在一个最小调度时间单元内的数据传输。例如，上述控制信息中携带RV信息，RV信息可以从上述控制信息中获取。或者，预定义规则预先定义了RV信息，可基于该预定义规则获得该RV信息。
在一个可能的设计中，该方法还包括：获得第一进程和第二进程复用m个连续的时频资源的复用方式，其中，复用方式包括以下中的一项或任一组合：时分复用、频分复用、空分复用、码分复用及符号复用。
在一个可能的设计中，用于发送第一进程的初传数据或重传数据的时频资源还用于发送第三进程的初传或重传数据，其中，第三进程的进程号与第一进程的进程号之间的差值不固定。因此，第一进程的进程号和第三进程的进程号不绑定，独立编号的机制可进一步实现对该m个连续的时频资源进行空分复用。
在一个可能的设计中，对于第一系统，k的取值为k1；对于第二系统，k的取值为k2，其中，k1与k2不同,且k1、k2为正整数，且第一系统中k1个最小调度时间单元所持续的时间与第二系统中k2个最小调度时间单元所持续的时间相等。因此，对不同的通信系统而言，k个连续的最小调度时间单元组成的 时间间隔(可称为绝对时间间隔)所持续的时间长度是相同的，从而可以保证该数据传输方法对各个不同系统的兼容性。
在一个可能的设计中，确认信息用于指示在k个连续的最小调度时间单元上初传的第一数据是否被正确接收。
第二方面，本申请的实施例提供一种通信方法，该方法包括：接收第一进程的重传数据以及至少一个第二进程的数据；接收到第一进程的重传数据和至少一个第二进程的数据后，反馈第一进程的确认信息和至少一个第二进程的确认信息。其中，第一进程的重传数据分布在m个连续的时频资源中的n个连续的时频资源，m个连续的时频资源在时域上由k个连续的最小调度时间单元组成；至少一个第二进程的数据包括至少一个第二进程的初传数据或重传数据，至少一个第二进程的数据分布在m-n个时频资源，n个连续的时频资源在时域上由q个连续的最小调度时间单元组成。m为大于等于2的正整数，k、q和n为正整数且m大于n。
本申请的实施例中第二进程第二数据和第一进程第一数据可以为同一用户数据也可以为不同用户数据。当第二进程第二数据和第一进程第一数据为同一用户数据时，k>0；当第二进程第二数据和第一进程第一数据为不同用户数据时，k>1。
此外，每个时间间隔的m个时频资源在频域上的资源位置也是可变的。换句话说，m个时频资源在频域上可以是离散的。当m个时频资源在频域上是离散的情况下，m个连续的时频资源也可称为m个时频资源。
通过本实施例提供的方案，由于重传第一数据所采用的时频资源要小于初传第一数据所采用的资源，既可以保证初传数据能够包含传输快中所有的 信息比特，避免不必要的译码和反馈的开销，数据量较小的重传数据又可以避免资源浪费、实现匹配信道的效果，进而实现频谱效率的提升。此外，可以利用m个连续的时频资源中剩余的m-n个资源通过至少一个第二进程对第二数据进行初传或重传，从而减少资源碎片，进一步提高数据传输的频谱效率。此外，k个连续的最小调度时间单元组成的时间间隔(可称为绝对时间间隔)，可以保证该数据传输方法对各个不同系统的兼容性。
该数据传输方法适用于下行数据传输、上行数据传输、或设备到设备device to device，D2D)的数据传输。例如，在下行数据传输或D2D数据传输中，该方法可由用户设备来执行；在上行数据传输中，该方法可由基站来执行。
在一个可能的设计中，该方法包括：接收控制信息。控制信息用于控制第一进程的初传、或者控制第一进程的重传或者同时控制第一进程的初传和重传。或者，控制信息用于控制在一个最小调度时间单元内的数据传输。
在一个可能的设计中，控制信息还包括冗余版本RV信息。
在一个可能的设计中，用于发送第一进程的重传数据或一个第二进程的数据的时频资源还用于发送第三进程的初传或重传数据，其中，第三进程的进程号与第一进程或第二进程的进程号之间的差值不固定。因此，第一进程或第二进程的进程号和第三进程的进程号不绑定，独立编号的机制可进一步实现对该m个连续的时频资源进行空分复用。
在一个可能的设计中，对于第一系统，k的取值为k1；对于第二系统，k的取值为k2，其中，k1与k2不同,且k1、k2为正整数，且第一系统中k1个最小调度时间单元所持续的时间与第二系统中k2个最小调度时间单元所持续的时 间相等。因此，对不同的通信系统而言，k个连续的最小调度时间单元组成的时间间隔(可称为绝对时间间隔)所持续的时间长度是相同的，从而可以保证该数据传输方法对各个不同系统的兼容性。
另一方面，本发明实施例提供了第一数据传输装置和第二数据传输装置。该第一数据传输装置具有实现上述第一方面的方法中的功能。第二数据传输装置具有实现上述第二方面的方法中的功能。上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。上述硬件或软件包括一个或多个与上述功能相对应的模块。
例如，在下行数据传输中，第一数据传输装置为基站，第二数据传输装置为用户设备；在上行数据传输中，第一数据传输装置为用户设备，第二数据传输装置为基站；在D2D数据传输中，第一数据传输装置为用户设备，第二数据传输装置为另一用户设备。
在一个可能的设计中，基站的结构中包括处理器和收发器，处理器被配置为支持基站执行上述方法中相应的功能。收发器用于支持基站与用户设备之间的通信，向用户设备发送上述方法中所涉及的信息或者指令，接收用户设备所发送的信息或指令。基站还可以包括存储器，存储器用于与处理器耦合，其保存基站必要的程序指令和数据。
又一方面，本发明实施例提供了一种用户设备，该用户设备的结构中包括处理器和收发器，处理器被配置为支持用户设备执行上述方法中相应的功能。收发器用于支持基站与UE之间的通信，向基站发送上述方法中所涉及的信息或者指令，接收基站所发送的信息或指令。用户设备还可以包括存储器，存储器用于与处理器耦合，其保存用户设备必要的程序指令和数据。
又一方面，本发明实施例提供了一种通信系统，该系统包括上述方面的基站和UE。
再一方面，本发明实施例提供了一种计算机存储介质，用于储存为上述第一数据传输装置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，本发明实施例提供了一种计算机存储介质，用于储存为上述第二数据传输装置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。
根据本发明实施例提供的技术方案，由于重传第一数据所采用的时频资源要小于初传第一数据所采用的资源，既可以保证初传数据能够包含传输快中所有的信息比特，避免不必要的译码和反馈的开销，数据量较小的重传数据又可以避免资源浪费、实现匹配信道的效果，进而实现频谱效率的提升。此外，可以利用m个连续的时频资源中剩余的m-n个资源通过至少一个第二进程对第二数据进行初传或重传，从而减少资源碎片，进一步提高数据传输的频谱效率。此外，k个连续的最小调度时间单元组成的时间间隔(可称为绝对时间间隔)，可以保证该数据传输方法对各个不同系统的兼容性。
附图说明
为了更清楚地说明本发明实施例，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其它的附图。
图1A为本发明的实施例提供的采用HARQ传输机制进行数据传输的流程示意图；
图1B为本发明实施例提供的一种通信系统示意图；
图2为本发明实施例提供的数据传输方法的流程示意图；
图3为本发明实施例提供的时频资源复用方式的示意图；
图4为本发明实施例提供的TDD系统下通过时分复用资源来进行数据传输的示意图；
图5A为本发明实施例提供的TDD系统下通过频分复用资源来进行数据传输的示意图；
图5B为本发明实施例提供的TDD系统下通过频分复用资源来进行数据传输的另一示意图；
图6为本发明实施例提供的两进程复用时频资源的示意图；
图7为本发明实施例提供的三进程复用时频资源的示意图；
图8为本发明实施例提供的TDD系统下通过空分复用资源来进行数据传输的示意图；
图9为本发明实施例提供的TDD系统下在时域上固定个数的最小调度时间单元上重传数据的示意图；
图10为本发明实施例提供的TDD系统下在固定个数的时频上重传数据的示意图；
图11为本发明实施例提供的TDD系统下固定初传和重传比例进行数据传输的示意图；
图12为本发明实施例提供的频分双工(frequency-division duplex,FDD)系 统下数据传输的示意图；
图13为本发明实施例提供的一种第一数据传输装置的结构示意图；
图14为本发明实施例提供的一种第二数据传输装置的结构示意图；
图15为本发明实施例提供的一种基站的结构示意图；
图16为本发明实施例提供的一种用户设备的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。
采用HARQ传输机制进行数据传输的流程如图1A所示，信息比特序列经过信道编码后生成编码比特序列，编码比特序列保存在HARQ缓存中；初传或重传时根据冗余版本(redundancy version，RV)从该HARQ缓存中取出编码比特序列进行速率匹配，得到物理信道比特序列；对理信道比特序列进行调制后生成物理信道符号序列；将物理信道符号序列进行资源映射，映射到对应的时频资源上进行传输。
为了解决现有技术通信系统中数据传输频谱效率低的问题，本发明实施例基于图1B所示的通信系统100提出了一种解决方案，用以提高通信系统中数据传输的频谱效率。该通信系统100至少包括至少一个基站，例如，基站104。该通信系统还包括该基站覆盖下的至少一个用户设备(User Equipment,UE)，例如，UE102。基站104和UE 102之间通过数据传输，实现各种通信功能。
在本发明实施例中，所述通信系统100可以为各种无线接入技术(radioaccess technology，RAT)系统，譬如例如码分多址(code division multiple access， CDMA)、时分多址(time division multiple access，TDMA)、频分多址(frequencydivision multiple access，FDMA)、正交频分多址(orthogonal frequency-divisionmultiple access，OFDMA)、单载波频分多址(single carrier FDMA，SC-FDMA)和其它系统等。术语“系统”可以和“网络”相互替换。CDMA系统可以实现例如通用无线陆地接入(universal terrestrial radio access，UTRA)，CDMA2000等无线技术。UTRA可以包括宽带CDMA(wideband CDMA，WCDMA)技术和其它CDMA变形的技术。CDMA2000可以覆盖过渡标准(interim standard，IS)2000(IS-2000)，IS-95和IS-856标准。TDMA系统可以实现例如全球移动通信系统(global system for mobile communication，GSM)等无线技术。OFDMA系统可以实现诸如演进通用无线陆地接入(evolved UTRA，E-UTRA)、超级移动宽带(ultra mobile broadband，UMB)、IEEE 802.11(Wi-Fi)，IEEE 802.16(WiMAX)，IEEE 802.20，Flash OFDMA等无线技术。UTRA和E-UTRA是UMTS以及UMTS演进版本。3GPP在长期演进(long term evolution，LTE)和基于LTE演进的各种版本是使用E-UTRA的UMTS的新版本。此外，所述通信系统100还可以适用于面向未来的通信技术，例如4.5G系统或NR(Next Radio)系统。本发明实施例描述的系统架构以及业务场景是为了更加清楚的说明本发明实施例的技术方案，并不构成对于本发明实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本发明实施例提供的技术方案对于类似的技术问题，同样适用。
本发明实施例中，所述基站(例如基站104)是一种部署在无线接入网中用以为终端提供无线通信功能的装置。所述基站可以包括各种形式的宏基站，微基站(也称为小站)，中继站，接入点等。在采用不同的无线接入技术的系 统中，具备基站功能的设备的名称可能会有所不同，例如，在LTE系统中，称为演进的节点B(evolved NodeB，eNB或者eNodeB),在第三代(3rd generation，3G)系统中，称为节点B(Node B)等。为方便描述，本发明所有实施例中，上述为终端提供无线通信功能的装置统称为基站。
本发明实施例中所涉及到的UE(例如UE 102)可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备。所述UE也可以称为移动台(mobile station,简称MS)，终端(terminal)，终端设备(terminal equipment)，还可以包括用户单元(subscriber unit)、蜂窝电话(cellular phone)、智能电话(smart phone)、无线数据卡、个人数字助理(personal digital assistant，PDA)电脑、平板型电脑、无线调制解调器(modem)、手持设备(handheld)、膝上型电脑(laptopcomputer)、无绳电话(cordless phone)或者无线本地环路(wireless local loop，WLL)台、机器类型通信(machine type communication,MTC)终端等。为方便描述，本发明所有实施例中，上面提到的设备统称为UE。
为了解决现有的AMC和HARQ技术中存在的问题，提升数据传输的频谱效率，本发明的实施例提供了一种如图2所示的数据传输方法。该方法由位于发送端的第一数据传输装置和位于接收端的第二数据传输装置之间进行交互来实现。
该数据传输方法适用于上行数据传输，也可以适用于上行数据传输，还可以适用于设备到设备(device to device，D2D)的数据传输。在下行数据传输的场景下，第一数据传输装置为基站104，第二数据传输装置为UE 102；在上行数据传输中，第一数据传输装置为UE 102，第二数据传输装置为基站104； 在D2D数据传输中，第一数据传输装置为UE 102，第二数据传输装置为另一UE。本发明的实施例对应用场景不做限定。
如图2所示，该数据传输方法包括：
在步骤202中，第一数据传输装置在m个连续的时频资源上通过第一进程对第一数据进行初传。
相应的，第二数据传输装置接收分布在m个连续的时频资源上的第一进程的初传数据。
其中，m个连续的时频资源在时域上由k个连续的最小调度时间单元组成。m为大于等于2的正整数，k为正整数。
以LTE系统为例，对于LTE系统上行或下行数据传输，调度器可以根据CSI信息、业务类型、数据队列中的缓存大小以及UE所属的用户的优先级对小区内的多个UE进行调度，确定被调度UE的MCS、分配的资源以及所使用的HARQ进程，其中，MCS包括编码调制方式以及TBS。在LTE系统中，调度器为基站内部的一个逻辑功能模块，对于下行数据传输，调度器与第一数据传输装置属于同一个物理设备，对于上行数据传输和D2D数据传输，调度器与第一数据传输装置属于不同的物理设备。可以理解的是，调度器可以根据编码调制方式、分配的资源块(resource block，RB)个数以及m的大小确定传输块大小(Transport Block Size，TBS)。第一数据传输装置根据确定的TBS从队列缓存中获取数据，增加MAC头和循环冗余校验(Cyclic RedundancyCheck，CRC)，根据数据大小确定是否要进行分段以及在每一个数据分段中增加CRC，进一步将每一个数据分段输入到如图1A所示的信道编码模块中进行编码。对数据信道进行编码的常用编码方法是turbo编码和卷积编码。
在本发明实施例中，k个连续的最小调度时间单元构成绝对时间间隔(Absolute Time Interval)。最小调度时间单元也可称为时间间隔X(timeinverval X)。即，每个绝对时间间隔内包括k个最小调度时间单元。不同的通信系统可具有不同的最小调度时间单元，但不同系统绝对时间间隔所持续的时间长度是相同。相应的，各个通信系统可为k取不同的值。
以绝对时间间隔的时间长度为1ms为例。例如，对于应用短传输时间间隔(short Transmission Time Interval,short TTI)的系统，最小调度时间单元为由2个正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)符号构成的短TTI，每个绝对时间间隔内包含7个短TTI，即,k＝7。对于高频28GHz的系统，最小调度时间单元为一个60KHz的TTI，每个绝对时间间隔内包含4个60KHz的TTI，即,k＝4。对于更高频率(如40GHz以上)的系统，最小调度时间单位为一个120KHz的TTI，每个绝对时间间隔内包含8个120KHz的TTI，即,k＝8。又比如以绝对时间间隔的时间长度为1个slot为例。假设最小调度时间单位为OFDM符号或者mini-slot。假设slot由14个或者28个OFDM符号组成，若最小调度时间单位为OFDM符号，则k＝14或者28。若最小调度时间单位为2个OFDM符号构成的mini-slot，则k＝7或者14。
在步骤204中，第二数据传输装置在接收到分布在m个连续的时频资源(k个连续的最小调度时间单元)上的第一进程的初传数据后，发送第一数据的确认信息。
相应的，第一数据传输装置接收第一数据的确认信息。
确认信息包括肯定应答信息(acknowledge,ACK)或否定应答信息(negative-acknowledge,NACK)。确认信息用于指示在m个连续的时频资源 (k个连续的最小调度时间单元)上初传的第一数据是否被正确接收。在图2的例子中，确认信息为NACK。
在步骤206中，第一数据传输装置根据确认信息，在m个连续的时频资源中的n个连续的时频资源上通过第一进程对第一数据进行重传，并在m-n个时频资源上通过至少一个第二进程对第二数据进行初传或重传。
相应的，第二数据传输装置接收第一进程的重传数据以及至少一个第二进程的初传数据或重传数据。
其中，n个连续的时频资源在时域上由q个连续的所述最小调度时间单元组成。q和n为正整数且m大于n。
该m个连续的时频资源可通过各种方式被第一进程的重传数据以及至少一个第二进程的初传数据或重传数据复用来进行数据传输。例如，m个连续时频资源的复用方式可包括以下的一项或任一组合：时分复用、频分复用、空分复用、层分复用、码分复用及符号复用。图3分别示出了两进程对时频资源进行时分复用、频分复用、层分复用时的示意图。m个连续的时频资源的分配方式将结合图4至图12做进一步描述。
回到图2，在步骤208中，第二数据传输装置接收到第一进程的重传数据和至少一个第二进程的数据后，反馈第一数据重传的确认信息和第二数据的确认信息。
相应的，第一数据传输装置接收第一数据重传的确认信息和第二数据的确认信息。
若确认信息为NACK且还未超过最大重传次数，则第一数据传输装置对该数据进行下一次重传，直至确认信息为ACK，表示该数据已经被接收端的第 二数据传输装置正确接收。
因此，通过本发明实施例的数据传输方法，由于同一数据初传的数据量大于重传的数据量，既可以保证初传数据能够包含传输快中所有的信息比特，避免不必要的译码和反馈的开销，数据量较小的重传数据又可以避免资源浪费、实现匹配信道的效果，进而实现频谱效率的提升。此外，可以利用m个连续的时频资源中剩余的m-n个资源通过至少一个第二进程对第二数据进行初传或重传，从而避免了资源碎片，进一步提高数据传输的频谱效率。此外，绝对时间间隔的设计可以保证该数据传输方法对各个不同系统的兼容性。
图4为本发明一个实施例提供的通过时分复用资源来进行数据传输的示意图。图4所示的实施例适用于TDD系统。图4将以下行传输为例对本发明的数据传输方法进行描述，然而，本发明并不限于此，该数据传输方法也适用于上行数据传输或D2D数据传输。
在图4的例子中，单个绝对时间间隔所持续的时间长度为1ms，k等于4，即每个绝对时间间隔内包括4个最小调度时间单元，并假设数据传输的最小往返时间(round trip time，RTT)为4个最小调度时间单元。
图4中示出了7个绝对时间间隔，在相邻两个绝对时间间隔中间设有间隙(Gap)和上行控制信息的字段。当接收端接收到绝对时间间隔内传输的所有数据后，统一向发送端反馈通过各进程传输的数据的确认信息，发送端通过上行控制信息获得通过各进程传输的数据的确认信息。
以下以通过编号为0、2、4、6的绝对时间间隔进行下行数据传输为例，进行进一步描述。
在编号为0的第一个绝对时间间隔中，发送端在4个连续的最小调度时间单 元上通过进程0对第一数据进行初传。接收端收到在4个连续的最小调度时间单元上通过进程0初传的第一数据后，对第一数据进行信道估计、信道均衡、解调、合并、译码等操作，向发送端反馈通过进程0初传的第一数据的确认信息。例如，在图4中，通过进程0初传的第一数据的确认信息为NACK。
由于通过进程0初传的第一数据的确认信息为NACK，在编号为2的绝对时间间隔内，发送端在1个最小调度时间单元上通过进程0对第一数据进行第一次重传，并在剩下的3个连续的最小时间单元上通过进程2对第二数据的进行初传或重传。接收端收到在4个连续的最小调度时间单元上传输的数据(包括在1个最小调度时间单元上通过进程0重传的第一数据和在3个连续的最小时间单元上通过进程2初传或重传的第二数据)后，分别对第一数据和第二数据进行信道估计、信道均衡、解调、合并、译码等操作，向发送端分别反馈通过进程0和进程2传输数据的确认信息。例如，在图4中，通过进程0重传的第一数据的确认信息为NACK，通过进程2初传或重传的第二数据的确认信息为NACK。
由于通过进程0重传的第一数据的确认信息为NACK，发送端需要对第一数据进行第二次重传；而通过进程2初传或重传的第二数据的确认信息为NACK，发送端对第二数据也需要进行重传。在编号为4的绝对时间间隔中，发送端在2个最小调度时间单元上通过进程0对第一数据进行第二次重传，并在剩下的2个连续的最小时间单元上通过进程2对第二数据的进行重传。接收端收到在4个连续的最小调度时间单元上传输的数据(包括在2个最小调度时间单元上通过进程0重传的第一数据和在2个连续的最小时间单元上通过进程2重传的第二数据)后，分别对第一数据和第二数据进行信道估计、信道均衡、 解调、合并、译码等操作，向发送端分别反馈通过进程0和进程2传输数据的确认信息。例如，在图4中，通过进程0重传的第一数据的确认信息为ACK，通过进程2重传的第二数据的确认信息为ACK。当收到的确认信息为ACK时，则代表数据已经被正确接收。
也就是说，在图4的例子中，对于通过进程0发送的第一数据来说，初传占用的最小调度时间单元为4个(即k＝4)。通过进程0发送的第一数据第一次重传占用的最小调度时间单元为1个(即q＝1),编号为2的绝对时间间隔内剩余的3个最小调度时间单元所对应的资源用于通过进程2对第二数据进行了初传。通过进程0发送的第一数据第二次重传占用的最小调度时间单元为2个(即q＝2),编号为4的绝对时间间隔内剩余的2个最小调度时间单元所对应的资源用于通过进程2对第二数据进行了重传。
因此，该数据传输机制提高了频谱效率。绝对时间间隔的设计还可以用较低的参考信号(reference signal,RS)密度实现较好的信道估计，降低上下行切换间隙的开销。此外，上述实施例中，偶数编号的绝对时间间隔内用于通过进程号为偶数的进程进行数据传输，而奇数编号的绝对时间间隔内用于通过进程号为奇数的进程进行数据传输。如此类似同步HARQ，时序清晰简洁，可以降低控制开销并降低调度复杂度。
图5A和图5B为本发明另一个实施例提供的通过频分复用资源来进行数据传输的示意图。图5A和图5B所示的实施例也适用于TDD系统。在图5A的例子中，绝对时间间隔在频域内被分配了4个资源块(resource block,RB)。
与图4类似的，以下以通过编号为0、2、4、6的绝对时间间隔进行下行数据传输为例，进行进一步描述。
在编号为0的第一个绝对时间间隔中，通过进程0初传的第一数据占用4RB全部的频域资源。由于通过进程0初传的第一数据的确认信息为NACK，在编号为2的绝对时间间隔中，通过进程0重传的第一数据与通过进程2初传的第二数据一起传输，各占用1RB和3RB的频域资源。由于通过进程0重传的第一数据与通过进程2初传的第二数据的确认信息均为NACK，在编号为4的绝对时间间隔中，通过进程0重传的第一数据与通过进程2重传的第二数据一起传输，各占用2RB的频域资源。
也就是说，在图5A的例子中，对于通过进程0发送的第一数据来说，初传占用的时频资源为4个RB的资源，4个RB的资源在时域上由4个连续的最小调度时间单元组成(即k＝4)。通过进程0发送的第一数据第一次重传占用的时频资源为1个RB的资源，1个RB的资源在时域上由4个连续的最小调度时间单元组成(即q＝4),编号为2的绝对时间间隔内剩余的3个RB的资源用于通过进程2对第二数据进行了初传；通过进程0发送的第一数据第二次重传占用的时频资源为2个RB的资源，2个RB的资源在时域上由4个连续的最小调度时间单元组成(即q＝4),编号为4的绝对时间间隔内剩余的2个RB的资源用于通过进程2对第二数据进行了重传。
需要说明的是，绝对时间间隔在频域内被分配的RB个数以及在时域内包含的最小调度时间单元的个数并不限于图5A的例子，可以根据实际需求进行相应的变化。例如，1)绝对时间间隔在频域内被分配的RB资源不变，在时域内可以只包含一个最小调度时间单元。此时，若数据传输的RTT是4个最小调度时间单元，则进程0之间可插入3个独立的其他进程。又例如2)每个绝对时间间隔的长度不变(如图4中的k＝4)，但是其在频域内被分配的RB的个数可变 (例如现有LTE的自适应HARQ)。例如，在第一个绝对时间间隔内分配的RB数可以为10，在第二个绝对时间间隔内分配的RB数可以为8。此外，每个时间间隔的m个时频资源在频域上的资源位置也是可变的。换句话说，m个时频资源在频域上可以是离散的，如图5B所示。当m个时频资源在频域上是离散的情况下，本申请中的m个连续的时频资源也可称为m个时频资源。
当绝对时间间隔内k个最小调度时间单元对应的时频资源被多个进程的传输数据复用时，可基于不同的分配方式来为多个进程分配该时频资源。
(1)绝对时间间隔内k个最小调度时间单元对应的时频资源被多个进程的传输数据时分复用：
以两进程复用包含k个最小调度时间单元对应的资源为例：如果两个进程的数据的确认信息均为ACK，下一次传输时k个最小调度时间单元用于传输小进程号的初传数据；如果一个进程的数据的确认信息为NACK，另一个进程数据的确认信息为ACK，下一次传输时q个最小调度时间单元用于传输重传数据，k-q个最小调度时间单元用于传输初传数据，且先传输小进程号数据后传输大进程号数据；如果2个进程数据的确认信息均为NACK，下一次传输时
Figure PCTCN2016112436-appb-000001
个最小调度时间单元用于传输小进程号数据，
Figure PCTCN2016112436-appb-000002
个最小调度时间单元用于传输大进程号数据，且先传输小进程号数据后传输大进程号数据。
(2)绝对时间间隔内k个最小调度时间单元对应的时频资源被多个进程的传输数据频分复用：
以两进程复用时域上占用k个最小调度时间单元且频域上占用p个RB的资源为例：如果两个进程的数据的确认信息均为ACK，下一次传输时1个RB或q个RB用于传输小进程号的初传数据；如果一个进程的数据的确认信息为 NACK，另一个进程数据的确认信息为ACK，下一次传输时p个RB中的若干个RB用于传输重传数据，p个RB中剩余的RB用于传输初传数据，且先传输小进程号数据后传输大进程号数据；如果2个进程数据的确认信息均为NACK，下一次传输时
Figure PCTCN2016112436-appb-000003
个RB于传输小进程号数据，
Figure PCTCN2016112436-appb-000004
个RB用于传输大进程号数据，且先传输小进程号数据后传输大进程号数据。
例如，图6和图7分别示出了两进程和三进程复用时频资源的例子。图6和图7适用于时分复用的情况，也可适用于频分复用的情况。
在图6的例子中，绝对时间间隔包括4个最小调度时间单元，两进程分别为进程0和进程2。若通过进程0传输的数据和通过进程2传输的数据都是数据初传块，则4个最小调度时间单元对应的所有资源都用于进程0进行初传。若通过进程0传输的数据为重传块而通过进程2传输的数据为初传块，则进程0占用1/4的资源，如1个最小调度时间单元对应的时频资源或1个RB对应的时频资源，而进程2占用3/4的资源，如3个最小调度时间单元对应的时频资源或3个RB对应的时频资源。同理，若通过进程0传输的数据为初传块而通过进程2传输的数据为重传块，则进程0占用3/4的资源，而进程2占用1/4的资源。若通过进程0传输的数据和通过进程2传输的数据都是数据重传块，则两进程平分时频资源，例如，两进程各占用2个最小调度时间单元对应的时频资源或2个RB对应的时频资源。
在图7的例子中，绝对时间间隔包括6个最小调度时间单元，三进程分别为进程0、进程2和进程4。若三进程中只有一个进程为数据初传块，如，进程0，则,6个最小调度时间单元对应的所有资源都用于进程0进行初传。若进程0需要重传，则1/6的资源用于进程0进行重传，5/6的资源用于进程2进行初传。若进 程0和进程2都需要重传，则各分配1/6的资源用于进程0和进程2进行重传，4/6的资源用于进程4进行初传。若三进程都需要重传，则平分时频资源，各分配1/3的资源用于进程0、进程2和进程6进行重传。
通过上述资源分配方式(1)或(2)来复用m个连续的时频资源，可以固定进程的时序关系与进程之间的耦合关系。只需要一个进程号的指示信息便可以推导出绝对时间间隔内其它进程号的信息，便于控制。
(3)绝对时间间隔内k个最小调度时间单元对应的时频资源被多个进程的传输数据空分复用：
当k个最小调度时间单元对应的时频资源被多个进程的传输数据空分复用时，每一条流(stream)都可根据以上任一实施例的设计进行数据传输。用于初传或重传第一数据的时频资源还用于通过第三进程对第三数据进行初传或重传。换句话说，第一数据初传部分或重传部分在若干个最小调度时间单元上可以与任意一个或多个数据(即第三数据)的初传部分或重传部分空分复用。
如图8所示，两条流以最小调度时间单元为单位对绝对时间间隔对应的时频资源进行空分复用。例如，在编号为4的绝对时间间隔里，第二条流中通过进程4初传的前两部分数据与第一条流中通过进程0第二次重传的两部分数据空分复用，而第二条流中通过进程4初传的后两部分数据与第一条流中通过进程2重传的两部分数据空分复用。
其中，第三进程的进程号与第一进程的进程号之间的差值不固定。也就是说，两条流的数据块属于相互独立的进程，有独立的进程号，进程号并不互相绑定。因此，还进一步提高了对两条流调度的灵活度。
当绝对时间间隔内k个最小调度时间单元对应的时频资源被多个进程的传输数据复用时，还可采用另一种资源分配方式：通过固定数目的时频资源来重传数据。固定数目的时频资源可分为多个维度：绝对时间间隔时域上固定个数的最小调度时间单元(n和q都是固定的)、绝对时间间隔频域上固定个数的RB(n是固定的，q＝k)、或绝对时间间隔固定个数的时频资源(n是固定的)。
图9示出了在时域上固定个数的最小调度时间单元上重传数据的示意图。图9和图4的差别在于，当通过进程0传输的第一数据的确认信息为NACK时，不管是第一次重传还是第二次重传，都仅在1个最小调度时间单元上通过进程0对第一数据进行重传(即q＝1)。
在该实施例中，重传的数据固定使用q个最小调度时间单元。在一个绝对时间间隔内，用来初传其他数据所占用的最小调度时间单元的个数由剩余的资源决定。例如，在图9中，当通过进程0传输的第一数据需要重传时，剩余的3个最小调度时间单元可用于通过进程2对第二数据进行初传。当通过进程0传输的第一数据和通过进程2传输的第二数据均需要重传时，剩余的2个最小调度时间单元可用于通过进程4对其他数据进行初传。
在本实施例中，为了避免过多重传导致的时延影响，应当预先设置最大重传次数。最大重传次数不超过一个绝对时间间隔中包含的最小调度时间单元的个数(即,k)。例如，在图9的例子中，最大重传次数为3次。因此，若发送端在编号为6的绝对时间间隔中1个最小调度时间单元上通过进程0对第一数据进行第三次重传后收到的确认信息仍为NACK，则代表该次传输失败，不再进行下一次重传。
对于非空分复用的情况，每个绝对时间间隔内包含的最大进程数目由最大 重传次数加一和一个绝对时间间隔中包含的最小调度时间单元的个数(即,k)两者中的更小的值决定。
通过上述资源分配方式，在k个连续的最小调度时间单元对应的时频资源上进行数据初传，在保持不变的q个最小调度时间对应的时频资源上进行数据重传，且q小于k。因此，小粒度且数据块大小保持不变的重传数据可进一步提高跟踪信道变化的准确度。
在时域上固定个数的最小调度时间单元上重传数据同理，此处不再赘述。
图10示出了在固定个数的时频上重传数据的示意图。图10与图9的差别在于，当通过进程0传输的第一数据的确认信息为NACK时，不管是第一次重传还是第二次重传，不占用1个最小调度时间单元内所有的频域资源来通过进程0对第一数据进行重传，而是仅在1个最小调度时间单元内的一部分的频域资源通过进程0对第一数据进行重传。
如图10所示，当通过进程0传输的第一数据需要重传时，通过进程0重传的数据分布在第一个最小调度时间间隔中4RB中的前2个RB资源上，该绝对时间间隔内剩余的时频资源用于通过进程2对第二数据进行初传。当通过进程0传输的第一数据和通过进程2传输的第二数据均需要重传时，通过进程0重传的第一数据和通过进程2重传的第二数据分别分布在第一个最小调度时间单元内的2个RB资源上，该绝对时间间隔内剩余的时频资源给通过进程4进行初传。
在该实施例中，一个绝对时间间隔内包含的最大进程数目为最大重传次数+1。由于绝对时间间隔内多进程复用资源的方式是同时包含时域划分和频域划分的混合复用方式，图10的例子也可看成是对一个绝对时间间隔内初传 块进行打孔用以传输重传块。因此，重传数据块的大小更小，从而可以获得更大的初传数据和重传数据比例以及更精确的跟踪信道效果。
图9和图10示出了固定重传数据量的两个例子。可选的，还可以进一步固定初传数据量和重传数据量之间的比例。如图11所示，初传数据量和重传数据量之间的比例设定为2:1。
在发送端接收到通过进程0初传的数据的确认信息为NACK时，发送端等待下一个需要重传的数据，例如，图11中通过进程2重传的数据。在编号为4的绝对时间间隔内，通过进程0重传的数据和通过进程2重传的数据复用该绝对时间间隔内的时频资源，以维持初传和重传数据量2:1的关系。
实际系统中可设定最大等待时延以避免等待时间太长。需要注意的是，图11中初传与重传比例2:1仅为示意，在时延要求不高的情况下，可以最大把比例设为4:1。这样，重传的粒度更小，能获得更大的吞吐量增益。
图12为本发明一个实施例提供的通过时分复用资源来进行数据传输的示意图。图12所示的实施例适用于FDD系统。图12与图4的差别在于，发送端和接收端在不同的频率上工作。每个连续绝对时间间隔对应的时频资源都可用于上行数据传输或下行数据传输。然而，传输数据的具体机制与TDD系统相似，且图4至图11所描述的在TDD系统分配资源的方式同样适用于FDD系统，此处不再赘述。
对于FDD系统，上述数据传输机制除了能够提升频谱效率，绝对时间间隔的设计还能够和其他TDD系统实现更好的兼容性。
以上结合具体实施例描述了在不同系统中利用各种资源复用方式和资源分配方式进行数据传输的方案。对于发送端的第一数据传输装置而言，在进 行数据传输前，需要获知数据传输所要采用的资源复用方式和/或资源分配方式，并将数据传输所要采用的资源复用方式和/或资源分配方式告知接收端的第二数据传输装置。
例如，可在发送端的第一数据传输装置和接收端的第二数据传输装置内预设规则，该预设规则定义了数据传输所要采用的资源复用方式和/或资源分配方式。
或者，发送端的第一数据传输装置可向接收端的第二数据传输装置发送控制信息，该控制信息携带用于指示资源复用方式和/或资源分配方式的信息。例如，对于下行数据传输，控制信息为基站向UE发送的下行控制信息(downlink control information,DCI)。对于上行数据传输，控制信息为UE向基站发送的上行控制信息(uplink control information,UCI)。
可选的，控制信息可用于控制在一个最小调度时间单元内的数据传输。或者，控制信息可用于控制数据(如上述第一数据)的初传、或者控制数据的重传或者同时控制数据的初传和重传。以下将以DCI为例分别介绍：
(1)控制信息用于控制在一个最小调度时间单元内的数据传输：
也就是说，一个绝对时间间隔内每个最小调度时间单元使用一个DCI进行调度。如果一个绝对时间间隔内包含的最小调度时间单元的数目，资源复用方式和资源分配方式都是通过预设规则或其他隐性或半静态指示信息来指示的，那么对于空分复用情况，DCI只需要指示一条流的进程号信息，另一条流的进程号可以通过已有的一个进程号计算得到。或者，对于空分复用情况，DCI可指示2个独立进程的进程号信息，还可以指示一个绝对时间间隔内包含的Time Interval X数目小调度时间单元的数目、资源复用方式和资源分 配方式，这样可实现更动态且灵活的调度。
(2)控制信息用于控制数据(如上述第一数据)的初传、或者控制数据的重传或者同时控制数据的初传和重传：
也就是说，除了每个进程可以有各自的DCI外，一个DCI可用于调度一个绝对时间间隔内通过所有进程传输的数据。如果一个绝对时间间隔内包含的最小调度时间单元的数目，资源复用方式和资源分配方式都是通过预设规则或其他隐性或半静态指示信息来指示的，那么进程之间的耦合关系是确定的。例如，当根据图6的例子来复用并分配时频资源时，进程0可以认为是“主进程”，进程2可以认为是“辅进程”；只有当进程0的确认信息为NACK或者进程2的确认信息为NACK时，才会为进程2分配资源进行数据传输。
因此，对于非空分复用情况，DCI只需要指示“主进程”的进程号信息、“主进程”的MCS、数据是否为初传、RV等信息、以及“辅进程”的MCS、数据是否为初传、RV等信息，不需要指示“辅进程”的进程号信息。假设预设规则中定义了一个绝对时间间隔内含有s个进程，则DCI中需指示s个进程的MCS、数据是否为初传、RV等信息和一个“主进程”的进程号信息。为了防止DCI控制开销太大，s的数值不能太高。另外，为了节省控制开销，“辅进程”的一些信息(比如MCS等)可以不需要，而是使用与“主进程”相同的值。
类似的，对于空分复用情况，DCI只需要指示其中一条流上的“主进程”的进程号信息，该流的“辅进程”以及另一条流上的“主进程”和“辅进程”进程号信息均不需要指示，可以由具有指示的“主进程”进程号计算得到。
因此，当控制信息用于控制数据的初传、或者控制数据的重传或者同时控制数据的初传和重传(如，采用一个DCI调度该绝对时间间隔内通过所有 进程传输的数据，相对于每个最小调度时间单元使用一个DCI进行调度的情况，进一步降低了信令开销。
需要说明的是，当根据图11的例子来复用并分配时频资源时，由于无法确定通过哪两个进程传输的数据的确认信息为NACK，通过哪两个进程传输的数据需要复用一个绝对时间间隔的资源进行重传，此时，DCI需要增加信令来指示每个独立进程的进程号信息。
当通过控制信息来传递用于指示资源复用方式和/或资源分配方式的信息时，DCI需要增加信元。
例如，可通过字段“复用模式指示”(Multiplex Pattern Indicator)来指示资源复用方式。若资源复用方式包括M个种类，则字段Multiplex Pattern Indicator占用log2M比特位。例如，若考虑开销影响时，资源复用方式只包括时分复用与频分复用，即M＝2，则字段Multiplex Pattern Indicator需要1bit进行指示。
又例如，对于资源分配方式，可以选择以下字段的一项或多项来指示：
(1)通过字段“分配规则指示”(Allocation Rule Indicator)来指示资源分配规则(如图6或图7所示的规则)个数。若规则的个数为R，则字段AllocationRule Indicator占用log2R比特位。根据这样的规则，即可确定初传数据或重传数据所分布的时频资源的个数/最小调度时间单元的个数。
(2)预先定义小进程号数据先占据资源，大进程号数据后占据资源。此外，对每个独立进程通过字段“数据部分数目”(Number of Data Parts，或称为TTI长度，TTI Length)来指示初传数据或重传数据所分布的时频资源的个数/最小调度时间单元的个数。字段Number of Data Parts占用log2N比特位。其中，N＝maxi≥0ni或者N为ni取值的可能个数。ni可用两种定义方式：一种是初传数 据或重传数据所分布的时频资源的个数/最小调度时间单元的个数的绝对值，另一种是初传数据或重传数据所分布的时频资源的个数/最小调度时间单元的个数的相对比例。
(3)同时使用(1)中的字段Allocation Rule Indicator和(2)中的字段Numberof Data Parts来指示，此时可以确定通过各进程传输数据在一个绝对时间间隔内的位置。
当通过以上三种方式任一来指示资源分配方式时，资源分配方式即可确定，此时也可不需要字段Multiplex Pattern Indicator来指示资源复用方式。
此外，对于发送端的第一数据传输装置而言，在进行数据传输前，需要获知数据传输的RV信息。类似的，在发送端的第一数据传输装置和接收端的第二数据传输装置内预设的规则可定义RV信息；或者，发送端的第一数据传输装置向接收端的第二数据传输装置发送的控制信息还携带RV信息。第一数据装置可通过上述两种方式中的任一方式或其他方式获得RV信息。
可选的，RV信息可用于控制数据(如上述第一数据)的初传或者控制控制数据的重传。也就是说，初传或重传的每部分数据对应一个独立的RV。例如，可以在控制信息中增加字段来指示RV信息。这样，接收端通过RV信息即可合并接收到的所有数据。
或者，RV信息用于控制在一个最小调度时间单元内的数据传输。例如，可以在控制信息中增加“初传数据指示”(New data indicator)字段和“冗余版本”(redundancy version)字段。其中，New data indicator字段用于指示是初传数据还是重传数据，redundancy version字段用于指示RV版本号。对于非空分复用的情况，若New data indicator字段指示为初传数据，则对应的RV版本 号为0，初传数据包含所有的信息比特，此时redundancy version字段可默认为0，不需要指示。若New data indicator字段指示为重传数据，则redundancy version字段用于指示在该最小调度时间单元内传输的数据的RV版本号。对于空分复用的情况，可在控制信息中为每条流增加相对应的New data indicator字段和redundancy version字段。
可选的，当New data indicator字段指示为初传数据，redundancy version字段不需要指示时，可利用redundancy version字段指示重传次数大于4时RV数据位置的偏移量(或RV版本号的偏移量)，这样，可以避免重传次数大于4次后继续重传的数据与前面重传数据一样。或者，当最大重传次数K>4时，redundancy version字段的位数增加到
Figure PCTCN2016112436-appb-000005
位。
上述本发明提供的实施例中，分别从各个网元本身、以及从各个网元之间交互的角度对本发明实施例提供的数据传输方法进行了介绍。可以理解的是，各个网元，例如UE、基站等为了实现上述功能，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，本发明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发明的范围。
例如，图13示出了第一数据传输装置的结构示意图。在图13中，第一数据传输装置包括接收单元1304和发送单元1302。例如，接收单元1304由接收器来实现。发送单元1302由发送器来实现。
发送单元1302用于在m个连续的时频资源上通过第一进程对第一数据进行初传，其中，所述m个连续的时频资源在时域上由k个连续的最小调度时间单元组成。接收单元1304用于接收所述第一数据的确认信息。例如，所述确认信息用于指示在所述k个连续的最小调度时间单元上初传的所述第一数据是否被正确接收。发送单元1302还用于根据所述确认信息，在m个连续的时频资源中的n个连续的时频资源上通过所述第一进程对所述第一数据进行重传，并在m-n个时频资源上通过至少一个第二进程对第二数据进行初传或重传。其中，所述n个连续的时频资源在时域上由q个连续的所述最小调度时间单元组成，m为大于等于2的正整数，k、q和n为正整数且m大于n。
可选的，发送单元1302还用于发送控制信息。所述控制信息用于控制所述第一进程的初传、或者控制所述第一进程的重传或者同时控制所述第一进程的初传和重传；或者，所述控制信息用于控制在一个所述最小调度时间单元内的数据传输。
可选的，该第一数据传输装置还包括处理单元1306。例如，处理单元1306由处理器实现。该处理单元1306用于获得冗余版本RV信息。所述RV信息用于控制所述第一进程的初传、或者控制所述第一进程的重传；或者，所述RV信息用于控制在一个所述最小调度时间单元内的数据传输。
可选的，该处理单元1306还用于获得所述第一进程和所述第二进程复用所述m个连续的时频资源的复用方式，其中，所述复用方式包括以下中的一项或任一组合：时分复用、频分复用、空分复用、层分复用、码分复用及符号复用。
可选的，用于发送所述第一进程的初传数据或重传数据的时频资源还用 于发送第三进程的初传或重传数据，其中，所述第三进程的进程号与所述第一进程的进程号之间的差值不固定。
可选的，对于第一系统，所述k的取值为k1；对于第二系统，所述k的取值为k2，其中，k1与k2不同,且k1、k2为正整数，且所述第一系统中所述k1个最小调度时间单元所持续的时间与所述第二系统中所述k2个最小调度时间单元所持续的时间相等。
图14示出了第二数据传输装置的结构示意图。在图14中，第二数据传输装置包括接收单元1402和发送单元1404。例如，接收单元1402由接收器来实现。发送单元1404由发送器来实现。
接收单元1402用于接收第一进程的重传数据以及至少一个第二进程的数据，所述至少一个第二进程的数据包括所述至少一个第二进程的初传数据或重传数据。发送单元1404用于在所述接收器接收到所述第一进程的重传数据和所述至少一个第二进程的数据后，反馈所述第一进程的确认信息和所述至少一个第二进程的确认信息。其中，所述第一进程的重传数据分布在m个连续的时频资源中的n个连续的时频资源，所述m个连续的时频资源在时域上由k个连续的最小调度时间单元组成；所述至少一个第二进程的数据分布在m-n个时频资源，所述n个连续的时频资源在时域上由q个连续的所述最小调度时间单元组成，m为大于等于2的正整数，k、q和n为正整数且m大于n。
可选的，该接收单元1402还用于接收控制信息。所述控制信息用于控制所述第一进程的初传、或者控制所述第一进程的重传或者同时控制所述第一进程的初传和重传；或者，所述控制信息用于控制在一个所述最小调度时间单元内的数据传输。可选的，控制信息还包括RV信息。所述RV信息用于控制 所述第一进程的初传、或者控制所述第一进程的重传；或者，所述RV信息用于控制在一个所述最小调度时间单元内的数据传输。
可选的，用于发送所述第一进程的重传数据或所述至少一个第二进程的数据的时频资源还用于发送第三进程的初传或重传数据，其中，所述第三进程的进程号与所述第一进程或所述第二进程的进程号之间的差值不固定。
可选的，对于第一系统，所述k的取值为k1；对于第二系统，所述k的取值为k2，其中，k1与k2不同,且k1、k2为正整数，且所述第一系统中所述k1个最小调度时间单元所持续的时间与所述第二系统中所述k2个最小调度时间单元所持续的时间相等。
如上所述，在下行数据传输的场景下，第一数据传输装置为基站104(如图15中的基站)，第二数据传输装置为UE 102(如图16中的UE)；在上行数据传输中，第一数据传输装置为UE 102(如图16中的UE)，第二数据传输装置为基站104(如图15中的基站)；在D2D数据传输中，第一数据传输装置为UE102(如图16中的UE)，第二数据传输装置为另一UE(如图16中的UE)。
图15示出了上述实施例中所涉及的基站的一种可能的结构示意图。该基站可以是如图图1B中所示的基站104。
所示基站包括收发器1502和控制器/处理器1504。收发器1502可以用于支持基站与上述实施例中的所述的UE之间收发信息，以及支持所述UE与其它UE之间进行无线电通信。所述控制器/处理器1504可以用于执行各种用于与UE或其他网络设备通信的功能。在上行链路，来自所述UE的上行链路信号经由天线接收，由收发器1502进行调解，并进一步由控制器/处理器1504进行处理来恢复UE所发送到业务数据和信令信息。在下行链路上，业务数据和信令 消息由控制器/处理器1504进行处理，并由收发器1502进行调解来产生下行链路信号，并经由天线发射给UE。所述收发器1502还用于执行如上述实施例描述的数据传输方法，例如，收发器包括发送器和接收器。在下行数据传输的场景下，发送器和接收器被配置为执行图2至图12中第一数据传输装置的功能。在上行数据传输的场景下，发送器和接收器被配置为执行图2至图12中第二数据传输装置的功能。所述控制器/处理器1504还可以用于执行图2至图12中涉及基站的处理过程和/或用于本申请所描述的技术的其他过程。所述基站还可以包括存储器1506，可以用于存储基站的程序代码和数据。所述基站还可以包括通信单元1508，用于支持基站与其他网络实体进行通信。可以理解的是，图15仅仅示出了基站的简化设计。在实际应用中，基站可以包含任意数量的发射器，接收器，处理器，控制器，存储器，通信单元等，而所有可以实现本发明的基站都在本发明的保护范围之内。
图16示出了上述实施例中所涉及的UE的一种可能的设计结构的简化示意图，所述UE可以是如图1B所示中的UE102。所述UE包括收发器1604，控制器/处理器1606，还可以包括存储器1608和调制解调处理器1602。
收发器1604调节(例如，模拟转换、滤波、放大和上变频等)该输出采样并生成上行链路信号，该上行链路信号经由天线发射给上述实施例中所述的基站。在下行链路上，天线接收上述实施例中基站发射的下行链路信号。收发器1604调节(例如，滤波、放大、下变频以及数字化等)从天线接收的信号并提供输入采样。在调制解调处理器1602中，编码器1612接收要在上行链路上发送的业务数据和信令消息，并对业务数据和信令消息进行处理(例如，格式化、编码和交织)。调制器1614进一步处理(例如，符号映射和调制) 编码后的业务数据和信令消息并提供输出采样。解调器1618处理(例如，解调)该输入采样并提供符号估计。解码器1616处理(例如，解交织和解码)该符号估计并提供发送给UE的已解码的数据和信令消息。编码器1612、调制器1614、解调器1618和解码器1616可以由合成的调制解调处理器1602来实现。这些单元根据无线接入网采用的无线接入技术(例如，LTE及其他演进系统的接入技术)来进行处理。控制器/处理器1606对UE的动作进行控制管理，用于执行上述实施例中由UE进行的处理。例如，收发器1604包括发送器和接收器。在下行数据传输的场景下，发送器和接收器被配置为执行图2至图12中第二数据传输装置的功能。在上行数据传输的场景下，发送器和接收器被配置为执行图2至图12中第一数据传输装置的功能。在D2D数据传输的场景下，处于发送端的UE被配置为执行图2至图12中第一数据传输装置的功能，处于接收端的UE被配置为执行图2至图12中第二数据传输装置的功能。所述控制器/处理器1606还可以用于执行图2至图12中涉及UE的处理过程和/或用于本申请所描述的技术的其他过程。存储器1608用于存储用于所述UE的程序代码和数据。
用于执行本发明上述基站，UE、基站或控制节点的控制器/处理器可以是中央处理器(CPU)，通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)，现场可编程门阵列(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发明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。
结合本发明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RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM存储器、寄存器、硬盘、移动硬盘、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可以位于用户设备中。当然，处理器和存储介质也可以作为分立组件存在于用户设备中。
在本申请的各个实施例中，第二进程的第二数据和第一进程的第一数据可以为同一用户的数据，也可以为不同用户的数据。当第二进程的第二数据和第一进程的第一数据为同一用户的数据时，k>0；当第二进程的第二数据和第一进程的第一数据为不同用户的数据时，k>1。
此外，在本申请的各个实施例中，m个时频资源在频域上可以是离散的。当m个时频资源在频域上是离散的情况下，m个连续的时频资源也可称为m个时频资源。
本领域技术人员应该可以意识到，在上述一个或多个示例中，本发明所描述的功能可以用硬件、软件、固件或它们的任意组合来实现。当使用软件实现时，可以将这些功能存储在计算机可读介质中或者作为计算机可读介质上的一个或多个指令或代码进行传输。计算机可读介质包括计算机存储介质和通信介质，其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。存储介质可以是通用或专用计算机能够存取的任何可用介质。
以上所述的具体实施方式，对本发明的目的、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，以上所述仅为本发明的具体实施方式而已，并不用于限定本发明的保护范围，凡在本发明的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本发明的保护范围之内。

Claims (34)

  1. 一种数据传输方法，其特征在于，包括：
    在m个时频资源上通过第一进程对第一数据进行初传，其中，所述m个时频资源在时域上由k个连续的最小调度时间单元组成；
    接收所述第一数据的确认信息；及
    根据所述确认信息，在m个时频资源中的n个时频资源上通过所述第一进程对所述第一数据进行重传，并在m-n个时频资源上通过至少一个第二进程对第二数据进行初传或重传，其中，所述n个时频资源在时域上由q个连续的所述最小调度时间单元组成；
    其中，m为大于等于2的正整数，k、q和n为正整数且m大于n，当所述第二进程第二数据和所述第一进程第一数据为不同用户数据时，k>1。
  2. 根据权利要求1所述的方法，其特征在于，还包括：
    发送控制信息，所述控制信息用于控制所述第一数据的初传、或者控制所述第一数据的重传或者同时控制所述第一数据的初传和重传。
  3. 根据权利要求1所述的方法，其特征在于，还包括：
    发送控制信息，所述控制信息用于控制在一个所述最小调度时间单元内的数据传输或所述m个时频资源内通过所有进程传输的数据。
  4. 根据权利要求1至3任一所述的方法，其特征在于，还包括：
    获得冗余版本RV信息，所述RV信息用于控制所述第一数据的初传、或者控制所述第一数据的重传。
  5. 根据权利要求1至3任一所述的方法，其特征在于，还包括：
    获得冗余版本RV信息，所述RV信息用于控制在一个所述最小调度时间单元内的数据传输。
  6. 根据权利要求1至5任一所述的方法，其特征在于，还包括：
    获得所述第一进程和所述至少一个第二进程复用所述m个时频资源的复用方式，其中，所述复用方式包括以下中的一项或任一组合：时分复用、频分复用、空分复用、层分复用、码分复用及符号复用。
  7. 根据权利要求1至6任一所述的方法，其特征在于，用于初传或重传所述第一数据的时频资源还用于通过第三进程对第三数据进行初传或重传，其中，所述第三进程的进程号与所述第一进程的进程号之间的差值不固定。
  8. 根据权利要求1至7任一所述的方法，其特征在于，对于第一系统，所述k的取值为k1；对于第二系统，所述k的取值为k2，其中，k1与k2不同,且k1、k2为正整数，且所述第一系统中所述k1个最小调度时间单元所持续的时间与所述第二系统中所述k2个最小调度时间单元所持续的时间相等。
  9. 根据权利要求1至8任一所述的方法，其特征在于，所述确认信息用于指示在所述k个连续的最小调度时间单元上初传的所述第一数据是否被正确接收。
  10. 根据权利要求1至9任一所述的方法，其特征在于，所述m个时频资源在频域上是离散的。
  11. 一种数据传输方法，其特征在于，包括：
    接收第一进程的重传数据以及至少一个第二进程的数据；
    接收到所述第一进程的重传数据和所述至少一个第二进程的数据后，反馈所述第一进程的确认信息和所述至少一个第二进程的确认信息；
    其中，所述第一进程的重传数据分布在m个时频资源中的n个时频资源，所述m个时频资源在时域上由k个连续的最小调度时间单元组成；所述至少一个第二进程的数据包括所述至少一个第二进程的初传数据或重传数据，所述至少一个第二进程的数据分布在m-n个时频资源，所述n个时频资源在时域上由q个连续的所述最小调度时间单元组成，m为大于等于2的正整数，k、q和n为正整数且m大于n，当所述第二进程第二数据和所述第一进程第一数据为不同用户时，k>1。
  12. 根据权利要求11所述的方法，其特征在于，还包括：
    接收控制信息，所述控制信息用于控制所述第一进程的初传、或者控制所述第一进程的重传或者同时控制所述第一进程的初传和重传。
  13. 根据权利要求11所述的方法，其特征在于，还包括：
    接收控制信息，所述控制信息用于控制在一个所述最小调度时间单元内的数据传输或所述m个时频资源内通过所有进程传输的数据。
  14. 根据权利要求12或13所述的方法，其特征在于，所述控制信息还包括冗余版本RV信息。
  15. 根据权利要求11至14任一所述的方法，其特征在于，用于发送所述第一进程的重传数据或所述至少一个第二进程的数据的时频 资源还用于发送第三进程的初传或重传数据，其中，所述第三进程的进程号与所述第一进程或所述第二进程的进程号之间的差值不固定。
  16. 根据权利要求11至15任一所述的方法，其特征在于，对于第一系统，所述k的取值为k1；对于第二系统，所述k的取值为k2，其中，k1与k2不同,且k1、k2为正整数，且所述第一系统中所述k1个最小调度时间单元所持续的时间与所述第二系统中所述k2个最小调度时间单元所持续的时间相等。
  17. 根据权利要求11至16任一所述的方法，其特征在于，所述m个时频资源在频域上是离散的。
  18. 一种数据传输装置，其特征在于，包括：
    发送器，用于在m个时频资源上通过第一进程对第一数据进行初传，其中，所述m个时频资源在时域上由k个连续的最小调度时间单元组成；
    接收器，用于接收所述第一数据的确认信息；及
    所述发送器还用于根据所述确认信息，在m个时频资源中的n个时频资源上通过所述第一进程对所述第一数据进行重传，并在m-n个时频资源上通过至少一个第二进程对第二数据进行初传或重传，其中，所述n个时频资源在时域上由q个连续的所述最小调度时间单元组成；
    其中，m为大于等于2的正整数，k、q和n为正整数且m大于n，当所述第二进程第二数据和所述第一进程第一数据为不同用户时，k>1。
  19. 根据权利要求18所述的数据传输装置，其特征在于，所述发 送器还用于发送控制信息，所述控制信息用于控制所述第一进程的初传、或者控制所述第一进程的重传或者同时控制所述第一进程的初传和重传。
  20. 根据权利要求18所述的数据传输装置，其特征在于，所述发送器还用于发送控制信息，所述控制信息用于控制在一个所述最小调度时间单元内的数据传输或所述m个时频资源内通过所有进程传输的数据。
  21. 根据权利要求18至20任一所述的数据传输装置，其特征在于，还包括：处理器，用于获得冗余版本RV信息，所述RV信息用于控制所述第一进程的初传、或者控制所述第一进程的重传。
  22. 根据权利要求18至20任一所述的数据传输装置，其特征在于，还包括：处理器，用于获得冗余版本RV信息，所述RV信息用于控制在一个所述最小调度时间单元内的数据传输。
  23. 根据权利要求21或22所述的数据传输装置，其特征在于，所述处理器还用于获得所述第一进程和所述第二进程复用所述m个时频资源的复用方式，其中，所述复用方式包括以下中的一项或任一组合：时分复用、频分复用、空分复用、层分复用、码分复用及符号复用。
  24. 根据权利要求18至23任一所述的数据传输装置，其特征在于，用于发送所述第一进程的初传数据或重传数据的时频资源还用于发送第三进程的初传或重传数据，其中，所述第三进程的进程号与所述第一进程的进程号之间的差值不固定。
  25. 根据权利要求18至24任一所述的数据传输装置，其特征在于，对于第一系统，所述k的取值为k1；对于第二系统，所述k的取值为k2，其中，k1与k2不同,且k1、k2为正整数，且所述第一系统中所述k1个最小调度时间单元所持续的时间与所述第二系统中所述k2个最小调度时间单元所持续的时间相等。
  26. 根据权利要求19至25任一所述的数据传输装置，其特征在于，所述确认信息用于指示在所述k个连续的最小调度时间单元上初传的所述第一数据是否被正确接收。
  27. 根据权利要求18至26任一所述的数据传输装置，其特征在于，所述m个时频资源在频域上是离散的。
  28. 一种数据传输装置，其特征在于，包括：
    接收器，用于接收第一进程的重传数据以及至少一个第二进程的数据，所述至少一个第二进程的数据包括所述至少一个第二进程的初传数据或重传数据；
    发送器，用于在所述接收器接收到所述第一进程的重传数据和所述至少一个第二进程的数据后，反馈所述第一进程的确认信息和所述至少一个第二进程的确认信息；
    其中，所述第一进程的重传数据分布在m个时频资源中的n个时频资源，所述m个时频资源在时域上由k个连续的最小调度时间单元组成；所述至少一个第二进程的数据分布在m-n个时频资源，所述n个时频资源在时域上由q个连续的所述最小调度时间单元组成，m为大于等于2的正整数，k、q和n为正整数且m大于n，当所述第二进程 第二数据和所述第一进程第一数据为不同用户时，k>1。
  29. 根据权利要求28所述的数据传输装置，其特征在于，所述接收器还用于接收控制信息，所述控制信息用于控制所述第一进程的初传、或者控制所述第一进程的重传或者同时控制所述第一进程的初传和重传。
  30. 根据权利要求28所述的数据传输装置，其特征在于，所述接收器还用于接收控制信息，所述控制信息用于控制在一个所述最小调度时间单元内的数据传输或所述m个时频资源内通过所有进程传输的数据。
  31. 根据权利要求29或30所述的数据传输装置，其特征在于，所述控制信息还包括冗余版本RV信息。
  32. 根据权利要求28至31任一所述的数据传输装置，其特征在于，用于发送所述第一进程的重传数据或所述至少一个第二进程的数据的时频资源还用于发送第三进程的初传或重传数据，其中，所述第三进程的进程号与所述第一进程或所述第二进程的进程号之间的差值不固定。
  33. 根据权利要求28至32任一所述的数据传输装置，其特征在于，对于第一系统，所述k的取值为k1；对于第二系统，所述k的取值为k2，其中，k1与k2不同,且k1、k2为正整数，且所述第一系统中所述k1个最小调度时间单元所持续的时间与所述第二系统中所述k2个最小调度时间单元所持续的时间相等。
  34. 根据权利要求28至33任一所述的数据传输装置，其特征在于，所述m个时频资源在频域上是离散的。
PCT/CN2016/112436 2016-08-09 2016-12-27 数据传输方法、数据传输装置和通信系统 WO2018028123A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201680085970.3A CN109155706B (zh) 2016-08-09 2016-12-27 数据传输方法、数据传输装置和通信系统

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/CN2016/094234 WO2018027589A1 (zh) 2016-08-09 2016-08-09 数据传输方法、数据传输装置和通信系统
CNPCT/CN2016/094234 2016-08-09

Publications (1)

Publication Number Publication Date
WO2018028123A1 true WO2018028123A1 (zh) 2018-02-15

Family

ID=61161255

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/CN2016/094234 WO2018027589A1 (zh) 2016-08-09 2016-08-09 数据传输方法、数据传输装置和通信系统
PCT/CN2016/112436 WO2018028123A1 (zh) 2016-08-09 2016-12-27 数据传输方法、数据传输装置和通信系统

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/094234 WO2018027589A1 (zh) 2016-08-09 2016-08-09 数据传输方法、数据传输装置和通信系统

Country Status (2)

Country Link
CN (1) CN109155706B (zh)
WO (2) WO2018027589A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113302999A (zh) * 2019-02-15 2021-08-24 华为技术有限公司 数据调度方法、装置及系统
US11146436B2 (en) * 2017-05-31 2021-10-12 Sharp Kabushiki Kaisha Terminal apparatus and base station apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020042036A1 (zh) * 2018-08-29 2020-03-05 Oppo广东移动通信有限公司 无线通信方法和通信设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101005342A (zh) * 2006-01-17 2007-07-25 华为技术有限公司 多载波系统子带映射方法及装置
CN101064708A (zh) * 2006-04-30 2007-10-31 华为技术有限公司 多载波系统频率资源映射方法及装置
CN101499890A (zh) * 2008-02-03 2009-08-05 大唐移动通信设备有限公司 一种对非调度传输失败的数据进行重传的方法和设备
CN101651532A (zh) * 2009-08-27 2010-02-17 华为技术有限公司 空间复用模式混合自动重传请求处理方法及装置
US20110235586A1 (en) * 2010-03-29 2011-09-29 Samsung Electronics Co., Ltd. Method and apparatus for controlling retransmission on uplink in a wireless communication system supporting mimo

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWM287554U (en) * 2004-05-07 2006-02-11 Interdigital Tech Corp Apparatus for assigning hybrid-automatic repeat request processes
CN1983914B (zh) * 2005-12-16 2011-04-13 株式会社Ntt都科摩 一种混合自动请求重传方法及系统
US8432794B2 (en) * 2005-12-29 2013-04-30 Interdigital Technology Corporation Method and apparatus for selecting multiple transport formats and transmitting multiple transport blocks simultaneously with multiple H-ARQ processes
CN101034959A (zh) * 2006-03-10 2007-09-12 华为技术有限公司 混合自动重传方法及其装置和系统
CN101132262B (zh) * 2006-08-21 2011-04-20 大唐移动通信设备有限公司 一种tdd系统同步harq的实现及数据传输的方法
CN101132264B (zh) * 2007-09-29 2012-10-10 中兴通讯股份有限公司 一种harq重传资源配置方法
EP2214340A1 (en) * 2009-01-30 2010-08-04 Panasonic Corporation HARQ operation for macro-diversity transmissions in the downlink
CN101882984B (zh) * 2009-05-07 2012-09-26 中国移动通信集团公司 一种数据重传方法及系统
CN102237949B (zh) * 2010-04-21 2014-03-12 华为技术有限公司 一种解调导频的传输方法,设备及系统
CN102006669A (zh) * 2010-11-24 2011-04-06 华为技术有限公司 在harq区域中的资源分配方法及基站

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101005342A (zh) * 2006-01-17 2007-07-25 华为技术有限公司 多载波系统子带映射方法及装置
CN101064708A (zh) * 2006-04-30 2007-10-31 华为技术有限公司 多载波系统频率资源映射方法及装置
CN101499890A (zh) * 2008-02-03 2009-08-05 大唐移动通信设备有限公司 一种对非调度传输失败的数据进行重传的方法和设备
CN101651532A (zh) * 2009-08-27 2010-02-17 华为技术有限公司 空间复用模式混合自动重传请求处理方法及装置
US20110235586A1 (en) * 2010-03-29 2011-09-29 Samsung Electronics Co., Ltd. Method and apparatus for controlling retransmission on uplink in a wireless communication system supporting mimo

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11146436B2 (en) * 2017-05-31 2021-10-12 Sharp Kabushiki Kaisha Terminal apparatus and base station apparatus
CN113302999A (zh) * 2019-02-15 2021-08-24 华为技术有限公司 数据调度方法、装置及系统
CN113302999B (zh) * 2019-02-15 2022-07-29 华为技术有限公司 数据调度方法、装置及系统

Also Published As

Publication number Publication date
CN109155706B (zh) 2021-10-26
CN109155706A (zh) 2019-01-04
WO2018027589A1 (zh) 2018-02-15

Similar Documents

Publication Publication Date Title
EP3926882B1 (en) Method and apparatus for receiving downlink data transmissions
EP3547777B1 (en) Method and apparatus for wireless communication
WO2017157181A1 (zh) 一种资源调度和分配的方法和装置
CN109845157B (zh) 通信方法与设备
CN107113097B (zh) 在无线通信系统中发送ack/nack的方法和设备
EP3459195B1 (en) Systems and methods for frequency-division duplex transmission time interval operation
US10873437B2 (en) Systems and methods for frequency-division duplex transmission time interval operation
KR20180013171A (ko) 이동 통신 시스템에서 harq 프로세스 관리 방법 및 장치
CN111092698A (zh) 无线通信系统中的方法和节点
US20220248436A1 (en) Method and device for transmitting harq-ack
CN111917528B (zh) 传输数据的方法、设备和通信系统
CN110352577B (zh) 高效混合自动重传请求操作方法及其用户设备
CN111699645B (zh) 通信方法及装置
WO2016165131A1 (zh) 一种信息反馈的方法、设备和系统
CN104348582A (zh) 用于传输控制信息的方法和设备
CN111566961B (zh) 一种信息传输方法及设备
EP3520282B1 (en) Infrastructure equipment, wireless telecommunications system and method for harq-ack bundling
WO2018028123A1 (zh) 数据传输方法、数据传输装置和通信系统
CN110149174B (zh) 无线通信方法、网络设备、终端设备及可读存储介质
US10749638B2 (en) Soft buffer handling with limited memory access bandwidth
CN114175538A (zh) 用于增强型dai的方法和设备
WO2021227981A1 (zh) 一种信息发送的方法及设备
WO2018191863A1 (zh) 传输数据的方法和设备
CN117751539A (zh) 方法、通信装置和基础设施设备
CN113892284B (zh) 无线通信中的传输块重传的减少的准备时间

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16912576

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16912576

Country of ref document: EP

Kind code of ref document: A1