WO2019148504A1 - 一种数据传输的方法、设备及计算机存储介质 - Google Patents

一种数据传输的方法、设备及计算机存储介质 Download PDF

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Publication number
WO2019148504A1
WO2019148504A1 PCT/CN2018/075321 CN2018075321W WO2019148504A1 WO 2019148504 A1 WO2019148504 A1 WO 2019148504A1 CN 2018075321 W CN2018075321 W CN 2018075321W WO 2019148504 A1 WO2019148504 A1 WO 2019148504A1
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Prior art keywords
data
feedback information
timer
receiving
receiving end
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PCT/CN2018/075321
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English (en)
French (fr)
Inventor
唐海
林晖闵
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Oppo广东移动通信有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to CN201880076810.1A priority Critical patent/CN111480308B/zh
Priority to PCT/CN2018/075321 priority patent/WO2019148504A1/zh
Publication of WO2019148504A1 publication Critical patent/WO2019148504A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems

Definitions

  • the embodiments of the present invention relate to the field of wireless communications technologies, and in particular, to a data transmission method, device, and computer storage medium.
  • the vehicle networking system adopts a Long Term Evolution (LTE)-to-device (D2D, Device to Device) side-link (SL, Sidelink) transmission technology, and the communication data is received by the base station in a conventional LTE system or Different ways of sending, the vehicle networking system uses the terminal-to-terminal direct communication method, so it has higher spectral efficiency and lower transmission delay.
  • LTE Long Term Evolution
  • D2D Device to Device
  • SL Sidelink
  • mode 3 the transmission resources of the terminal are allocated by the base station.
  • mode 4 the terminal determines the transmission resource by means of sensing + reservation.
  • the Hybrid Automatic Repeat reQuest (HARQ) mechanism based on the feedback from the receiver is not supported. Therefore, for the V2X technology, the data transmission based on the HARQ mechanism is needed to be solved. problem.
  • HARQ Hybrid Automatic Repeat reQuest
  • Embodiments of the present invention are directed to a method, device, and computer storage medium for data transmission.
  • an embodiment of the present invention provides a data transmission method, including:
  • the first timer is started; and according to the feedback information sent by the data receiving end and the state of the first timer, whether to perform HARQ retransmission to the data receiving end is determined.
  • an embodiment of the present invention provides a data transmission method, including:
  • an embodiment of the present invention provides a data sending end device, including a sending part, a first timer control part, and a first determining part, where the sending part is configured to send data;
  • the first timer control part is configured to start a first timer when the sending part sends data
  • the first determining part is configured to determine whether to perform HARQ retransmission to the data receiving end according to the feedback information sent by the data receiving end and the status of the first timer.
  • an embodiment of the present invention provides a data receiving end device, including a receiving part, a second timer control part, and a second determining part, where the receiving part is configured to receive data;
  • the second timer control part is configured to start the second timer after the receiving part receives the data
  • the second determining portion is configured to determine a first receiving state of the data
  • an embodiment of the present invention provides a data sending end device, including: a first network interface, a first memory, and a first processor;
  • the first network interface is configured to receive and send signals during the process of transmitting and receiving information with other external network elements;
  • the first memory is configured to store a computer program capable of running on the first processor
  • the first processor is configured to perform the steps of the method of the first aspect when the computer program is run.
  • an embodiment of the present invention provides a data receiving end device, including a second network interface, a second memory, and a second processor;
  • the second network interface is configured to receive and send signals during the process of transmitting and receiving information with other external network elements
  • the second memory is configured to store a computer program capable of running on the second processor
  • the second processor is configured to perform the steps of the method of the second aspect when the computer program is run.
  • an embodiment of the present invention provides a computer storage medium storing a program for data transmission, where the program of the data transmission is implemented by at least one processor to implement the first aspect or the second aspect. The steps of the method described.
  • the embodiment of the present invention provides a data transmission method, a device, and a computer storage medium.
  • a data receiving end sets a timer, and determines a feedback according to a timer state and a data receiving result.
  • Information the data transmitting end sets a timer, and determines whether to perform HARQ retransmission according to the timing state of the timer and the feedback information of the receiving end. Therefore, for the V2X technology, data transmission based on the HARQ mechanism is implemented.
  • FIG. 1 is a schematic diagram of a scenario of mode 3 in a car network
  • FIG. 2 is a schematic diagram of a scenario of mode 4 in a car network
  • FIG. 3 is a schematic flowchart of an information transmission method according to an embodiment of the present disclosure
  • FIG. 4 is a schematic flowchart of another information transmission method according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a data sending end device according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a specific hardware of a data sending end device according to an embodiment of the present disclosure
  • FIG. 7 is a schematic structural diagram of a data receiving end device according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of another data receiving device according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a specific hardware of a data receiving end device according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a system for data transmission according to an embodiment of the present invention.
  • the transmission resource of the in-vehicle terminal is allocated by a base station, such as an evolved base station (eNB, evolved NodeB) in LTE or a 5G base station (gNB) in a new air interface (NR, New Radio).
  • a base station such as an evolved base station (eNB, evolved NodeB) in LTE or a 5G base station (gNB) in a new air interface (NR, New Radio).
  • the base station sends a control message for indicating the Grant resource to the in-vehicle terminal through the downlink (DL, Down Link); and then, the in-vehicle terminal performs data transmission on the SL according to the resource allocated by the base station.
  • the base station may allocate a single transmission resource for the vehicle terminal, or may allocate a semi-static transmission resource for the terminal.
  • the vehicle terminal adopts a transmission mode of listening and reservation.
  • the vehicle terminal acquires an available transmission resource set by means of interception in the resource pool, and the vehicle terminal randomly selects one resource from the transmission resource set for data transmission. Since the service in the car network system has periodic characteristics, the vehicle terminal usually adopts a semi-static transmission mode, that is, after the vehicle terminal selects one transmission resource, the resource is continuously used in multiple transmission cycles, thereby reducing the resource weight.
  • the probability of selection and resource conflicts The vehicle terminal carries information for reserving the next transmission resource in the control information of the current transmission, so that other terminals can determine whether the resource is reserved and used by the vehicle terminal by detecting the control information of the vehicle terminal. The purpose of resource conflicts.
  • the number of receiving ends that receive the transmitted data may be more than one, that is, the data transmission scenario may be to multicast the transmitted data.
  • the sender needs to retransmit as long as one receiver does not receive the correct transmission data. This is a great drain on channel resources.
  • the terminal in the embodiment of the present invention may be an in-vehicle terminal or a handheld terminal.
  • the PDA Personal Digital Assistant
  • the network in the embodiment of the present invention may be an NR network, an LTE network, or the like.
  • the method may be applied to a data sending end.
  • the method may include:
  • S302 Determine, according to the feedback information sent by the data receiving end and the status of the first timer, whether to perform HARQ retransmission to the data receiving end.
  • the data transmitting end determines whether to perform HARQ retransmission through the timing state of the first timer and the feedback information sent by the data receiving end, and in the multicast scenario, even if the time-frequency resource of the feedback information occurs In the event of a collision, the HARQ retransmission can also be determined based on the receipt of the feedback information in the first timer timing state. Therefore, for the V2X technology, the data transmission based on the HARQ mechanism is implemented, and the HARQ retransmission cannot be smoothly implemented due to the conflict of time-frequency resources.
  • the first timer may be preset for a first time period for timing, and when data is sent, the first timer is started to perform timing according to the first time period.
  • its status may include: the timer expires and the timer does not time out.
  • the first time period in which the first timer is timed may be preset according to actual conditions. After the timing of the first timer reaches the set value, it is determined that the first timer expires; otherwise, it is determined that the first timer does not time out. For example, if the first time period is set to 4 ms, after the first timer is started, the countdown can be started from 4 ms. When the first timer is 0, the first timer is considered to be timed out; when the first timer is greater than 0, Then the timer is not timed out.
  • the data sending end waits for the feedback information of the receiving end during the timing of the first timer.
  • the feedback information the information that is sent by the data receiving end is used to indicate whether the data is received correctly. Therefore, in the embodiment of the present invention, the feedback information sent by the data receiving end may be specifically used to indicate the data.
  • the error indication information is received, or the feedback information is used to indicate that the data receives the correct indication information.
  • the indication information corresponding to the feedback information is used to indicate the data reception error
  • the feedback information sent by the data receiving end and the Determining whether to perform the HARQ retransmission to the data receiving end the method may include: if the feedback information is not received before the first timer expires, determining not to perform the data receiving end HARQ retransmission. It can be understood that if the feedback information is used to indicate a data receiving error, the feedback information is not received before the first timer expires, and the data transmitting end can be considered as the data receiving end correctly receiving the data. Therefore, there is no need to The data receiving end performs HARQ retransmission for the transmitted data.
  • the method may further include: if the feedback information is received before the first timer expires, determining to perform HARQ retransmission to the data receiving end. It can be understood that the data sending end receives the feedback information before the first timer times out, and the data sending end can determine that the HARQ retransmission for the sending data needs to be performed to the data receiving end based on the content indicated by the feedback information.
  • the method may include: determining that the HARQ is performed on the data receiving end if the feedback information is not received before the first timer expires Retransmission. It can be understood that if the feedback information is used to indicate that the data is received correctly, the feedback information is not received before the first timer expires, and the data transmitting end can be considered as the data receiving end does not correctly receive the data, therefore, it is required Perform HARQ retransmission on the data receiving end for the transmitted data.
  • the method further includes: if the feedback information is received before the first timer expires, determining to not perform HARQ retransmission to the data receiving end. It can be understood that the data sending end receives the feedback information before the first timer expires, and the data sending end can know that the data receiving end receives the data correctly based on the content indicated by the feedback information, so The data receiving end performs HARQ retransmission for the transmitted data.
  • the data sending end may restart the first timer when transmitting the HARQ retransmission data, and continue according to the first timer according to the foregoing scheme.
  • the timing status and feedback information for HARQ retransmission data are used to determine whether to perform HARQ retransmission for HARQ retransmission data.
  • new data can be sent to the data receiving end.
  • the data sending end can restart the first timer, and continue to determine whether to perform HARQ retransmission for the new data according to the timing state of the first timer and the feedback information for the new data according to the above scheme.
  • the method may further include:
  • the feedback information is received before the first timer expires, and the timing is stopped.
  • the data transmission end may stop the timing of the first timer after receiving the feedback information.
  • the method may further include:
  • the data sending end may re-clock the receiving condition of the feedback information sent by the subsequent data by restarting the first timer.
  • the data sending end determines the receiving condition of the feedback information by using the timing state of the first timer, and according to the receiving situation and the specific indication content of the feedback information. It is determined whether HARQ retransmission is performed, so that the data transmission based on the HARQ mechanism is implemented for the V2X technology, and the HARQ retransmission cannot be smoothly implemented due to the time-frequency resource conflict.
  • the embodiment of the present invention provides a data transmission method.
  • the method can be applied to a data receiving end, and the method includes:
  • S402 Determine a first receiving state of the data.
  • S403. Determine, according to the first receiving state, whether to attempt to send the first feedback information within a time period of the second timer.
  • the first feedback information for the data is sent by the timing of the second timer to avoid the time-frequency resource conflict that is more likely to occur in the V2X technology.
  • the collision of time-frequency resources causes HARQ retransmission to be unsuccessful.
  • the specific working mechanism of the second timer is the same as that of the first timer described in the foregoing embodiment.
  • the second time period in which the second timer is timed may be the same as the first time period set by the first timer, which is not described in this embodiment.
  • the first receiving state corresponds to the receiving state of the received data in step S401, and specifically includes: a correct receiving state and an incorrect receiving state.
  • the received data may be parsed, and the first receiving state of the data is determined according to the parsing result. Specifically, when the data receiving end can correctly parse the data, the first receiving state is a correct receiving state; when the data receiving end cannot parse the data or cannot correctly parse the data, the first The receiving status is the error receiving status.
  • the data receiving end may send the first receiving state to the data sending end, and the data sending end determines whether the data receiving end is targeted according to the first receiving state indicated in the feedback information.
  • the data is subjected to HARQ retransmission.
  • the implementation process of the specific data sending end to determine whether to perform the HARQ retransmission is described in the first embodiment, and details are not described herein again.
  • determining whether to try in the timing time of the second timer according to the first receiving state Send the first feedback information including:
  • the first receiving state indicated in the first feedback information when the data is received by mistake, if the data is received correctly, it is determined that the first feedback information is not attempted to be sent within the timeout period of the second timer.
  • the data receiving end may not need to send the first feedback information to the data sending end; for this case, corresponding to the data sending If the first feedback information is not received within a certain period of time, the data sending end can consider that the data receiving end correctly receives the data, and does not need to perform HARQ retransmission for the data.
  • the method may further include: determining to send the first feedback information within a time period of the second timer if the data is received incorrectly.
  • the data receiving end may receive the data error, it conforms to the content and the situation indicated by the first feedback information.
  • the data receiving end may The first feedback information is attempted to be sent in the timing of the second timer; in a specific implementation process, the data receiving end may indicate that the first receiving state is incorrectly receiving the data by using a NACK signal.
  • the data transmitting end can learn the data receiving error, thereby determining to perform HARQ retransmission for the data.
  • determining whether to try in the timing time of the second timer according to the first receiving state Send the first feedback information including:
  • Corresponding to the first receiving state indicated in the first feedback information is correctly receiving the data; if the data receiving is correct, determining to attempt to send the first feedback information in a timing time of the second timer.
  • the data receiving end may try to send the first feedback information in the timeout period of the second timer.
  • the data receiving end may indicate that the first receiving state is an erroneous receiving by the ACK signal. data. After receiving the first feedback information, the data transmitting end can know that the data is received correctly, so that there is no need to perform HARQ retransmission for the data.
  • the method may further include:
  • the data transmitting end may consider that the data receiving end receives the data error, and therefore, HARQ retransmission for the data is required.
  • the method further includes:
  • the time-frequency resource conflict condition of the feedback information transmission may be severe. In order to avoid the conflict of the time-frequency resource, the transmission may be cancelled. A feedback message.
  • the data sending end determines whether the HARQ retransmission is performed for the data, and then, if the HARQ retransmission is performed for the data, The HARQ retransmission data or the new data of the data indicates that the data transmitting end has completed the HARQ retransmission of the data, and therefore, the data receiving end may also cancel the sending of the first feedback information. It can be understood that, in this implementation manner, if the first receiving state indicated by the first feedback information is erroneously receiving the data, the HARQ retransmission for the data is received when the data receiving end has not sent the first feedback information.
  • the data receiving end can directly obtain the real content of the data based on the data received in step S401 and the HARQ retransmission data of the data. If the first receiving state indicated by the first feedback information is that the data is correctly received, the HARQ retransmission data for the data is received when the data receiving end has not sent the first feedback information, and the data is based on the correctness of the received data. The receiving end can directly discard the HARQ retransmission data for the data.
  • the data receiving end may still determine whether to try to send the feedback information for the receiving state, and the method further includes:
  • the HARQ retransmission data receiving the data, determining a second receiving state of the data according to the data and the HARQ retransmission data of the data, and determining whether to send the second feedback based on the second receiving state.
  • Information is used to characterize the second receiving state as erroneously receiving the data or correctly receiving the data.
  • the data receiving end determines whether to send the first feedback information in the time period of the second timer based on the receiving state of the received data, to indicate the data sending end. It is determined whether HARQ retransmission is performed, so that the data transmission based on the HARQ mechanism is implemented for the V2X technology, and the HARQ retransmission cannot be smoothly implemented due to the time-frequency resource conflict.
  • a data transmitting end device 50 including a transmitting portion 501, a first timer control portion 502, and a first determining portion 503, is provided.
  • the sending part 501 is configured to send data.
  • the first timer control part 502 is configured to start a first timer when the sending part 501 sends data
  • the first determining part 503 is configured to determine whether to perform HARQ retransmission to the data receiving end according to the feedback information sent by the data receiving end and the status of the first timer.
  • the first determining portion 503 is configured to determine that the HARQ retransmission is not performed to the data receiving end if the feedback information is not received before the first timer expires.
  • the first determining part 503 is further configured to determine to perform HARQ retransmission to the data receiving end if the feedback information is received before the first timer expires.
  • the first determining portion 503 is configured to perform HARQ retransmission to the data receiving end if the feedback information is not received before the first timer expires.
  • the first determining portion 503 is further configured to determine that the HARQ retransmission is not performed to the data receiving end if the feedback information is received before the first timer expires.
  • the first timer control part 502 is further configured to receive the feedback information before the first timer expires, and stop timing.
  • the first timer control part 502 is further configured to receive the feedback information before the first timer expires, and restart the first timer.
  • the first timer control part 502 is further configured to restart the first timer when performing HARQ retransmission to the data receiving end.
  • the “part” may be a partial circuit, a partial processor, a partial program or software, etc., of course, may be a unit, a module, or a non-modular.
  • each component in this embodiment may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software function module.
  • the integrated unit may be stored in a computer readable storage medium if it is implemented in the form of a software function module and is not sold or used as a stand-alone product.
  • the technical solution of the embodiment is essentially Said that the part contributing to the prior art or all or part of the technical solution can be embodied in the form of a software product stored in a storage medium, comprising a plurality of instructions for making a computer device (may It is a personal computer, a server, or a network device, etc. or a processor that performs all or part of the steps of the method described in this embodiment.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes.
  • the embodiment provides a computer storage medium storing a program for data transmission, and the program of the data transmission is implemented by at least one processor to implement the steps of the method described in the first embodiment.
  • FIG. 6 a specific hardware structure of the network side device 50 according to the embodiment of the present invention is shown, which may include: a first network interface 601 and a first memory 602. And a first processor 603; the various components are coupled together by a bus system 604.
  • bus system 604 is used to implement connection communication between these components.
  • the bus system 604 includes a power bus, a control bus, and a status signal bus in addition to the data bus.
  • various buses are labeled as bus system 604 in FIG.
  • the first network interface 601 is configured to receive and send signals during the process of transmitting and receiving information with other external network elements.
  • a first memory 602 configured to store a computer program executable on the first processor 603;
  • the first processor 603 is configured to: when the computer program is executed, perform:
  • the first memory 602 in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory.
  • the volatile memory can be a Random Access Memory (RAM) that acts as an external cache.
  • RAM Random Access Memory
  • many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM).
  • the first memory 602 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
  • the first processor 603 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the first processor 603 or an instruction in a form of software.
  • the first processor 603 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), or a field programmable gate array (FPGA). Or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the first memory 602, and the first processor 603 reads the information in the first memory 602, and completes the steps of the foregoing method in combination with the hardware thereof.
  • the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof.
  • the processing unit can be implemented in one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processing (DSP), Digital Signal Processing Equipment (DSP Device, DSPD), programmable Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general purpose processor, controller, microcontroller, microprocessor, other for performing the functions described herein In an electronic unit or a combination thereof.
  • ASICs Application Specific Integrated Circuits
  • DSP Digital Signal Processing
  • DSP Device Digital Signal Processing Equipment
  • PLD programmable Programmable Logic Device
  • FPGA Field-Programmable Gate Array
  • the techniques described herein can be implemented by modules (eg, procedures, functions, and so on) that perform the functions described herein.
  • the software code can be stored in memory and executed by the processor.
  • the memory can be implemented in the processor or external to the processor.
  • a composition of a data receiving device 70 including a receiving portion 701, a second timer controlling portion 702, and a second determining portion. 703, wherein the receiving portion 701 is configured to receive data;
  • the second timer control part 702 is configured to start the second timer after the receiving part 701 receives the data
  • the second determining portion 703 is configured to determine a first receiving state of the data
  • the second determining portion 703 is configured to receive the data in error corresponding to the first receiving state indicated in the first feedback information; if the data is received correctly, determine that the data is not in the The first feedback information is attempted to be sent within the timing of the second timer.
  • the second determining portion 703 is further configured to: if the data receiving error occurs, determine to attempt to send the first feedback information within a time period of the second timer.
  • the second determining portion 703 is configured to correctly receive the data corresponding to the first receiving state indicated in the first feedback information; if the data is received correctly, determine The first feedback information is attempted to be sent within the timing of the second timer.
  • the second determining portion 703 is further configured to determine that the first feedback information is not attempted to be sent within the timeout period of the second timer if the data is received incorrectly.
  • the data receiving end device 70 further includes a sending control portion 704 configured to determine to attempt to send the first feedback information in a timing time of the second timer; If the first feedback information is not successfully sent before the second timer expires, the first feedback information is cancelled.
  • the transmission control portion 704 is configured to cancel the transmission of the first feedback information if the HARQ retransmission data or the new data of the data is received.
  • the second determining portion 703 is further configured to determine, according to the HARQ retransmission data that receives the data, the second receiving of the data according to the data and the HARQ retransmission data of the data. a status, and determining whether to send the second feedback information based on the second receiving status; wherein the second feedback information is used to characterize the second receiving status as erroneously receiving the data or correctly receiving the data.
  • the embodiment provides a computer storage medium storing a program for data transmission, and the program of the data transmission is implemented by at least one processor to implement the steps of the method described in the second embodiment.
  • the computer readable medium For a detailed description of the computer readable medium, refer to the description in the third embodiment, and details are not described herein again.
  • bus system 904 is used to implement connection communication between these components.
  • Bus system 904 includes, in addition to the data bus, a power bus, a control bus, and a status signal bus.
  • various buses are labeled as bus system 904 in FIG. among them,
  • the second network interface 901 is configured to receive and send signals during the process of transmitting and receiving information with other external network elements.
  • a second memory 902 configured to store a computer program capable of running on the second processor 903;
  • the second processor 903 is configured to: when the computer program is executed, execute: after receiving the data, start a second timer; determine a first receiving state of the data; determine, according to the first receiving state, whether The first feedback information is attempted to be sent within the timeout period of the second timer.
  • the second processor 903 in the data receiving end 70 is further configured to perform the method steps described in the foregoing Embodiment 2 when the computer program is executed, and details are not described herein.
  • a system 10 for data transmission is shown, which is applied to a terminal in a device to a device D2D, and may even be applied to a terminal in a V2X technology; 1001 and a second terminal 1002; wherein the first terminal 1001 is the data transmitting end 50 described in any of the foregoing embodiments; the second terminal 1002 is the data receiving end 70 described in any of the foregoing embodiments. .
  • the data sending end determines the receiving condition of the feedback information by using the timing state of the first timer, and determines whether the content is specific according to the receiving situation and the feedback information.
  • the HARQ retransmission is implemented, so that the data transmission based on the HARQ mechanism is implemented for the V2X technology, and the HARQ retransmission cannot be smoothly implemented due to the conflict of the time-frequency resources.

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Abstract

本发明实施例提供了一种数据传输的方法、设备及计算机存储介质;该方法可以包括:发送数据时,启动第一定时器;根据数据接收端发送的反馈信息以及所述第一定时器的状态,确定是否向所述数据接收端进行HARQ重传。通过本发明实施例的技术方案,能够针对V2X技术,实现基于HARQ机制的数据传输。

Description

一种数据传输的方法、设备及计算机存储介质 技术领域
本发明实施例涉及无线通信技术领域,尤其涉及一种数据传输的方法、设备及计算机存储介质。
背景技术
车联网系统采用基于长期演进(LTE,Long Term Evolution)-设备到设备(D2D,Device to Device)的侧行链路(SL,Sidelink)传输技术,与传统的LTE系统中通信数据通过基站接收或者发送的方式不同,车联网系统采用终端到终端直接通信的方式,因此具有更高的频谱效率以及更低的传输时延。
在第三代合作伙伴项目(3GPP,the 3rd Generation Partnership Project)Rel-14中对车联网技术(V2X,Vehicle-to-Everything)进行了标准化,定义了两种传输模式:模式3和模式4。在模式3中,终端的传输资源由基站分配。在模式4中,终端采用侦听(sensing)+预留(reservation)的方式确定传输资源。
在目前的车联网系统中,还无法支持基于接收端反馈的混合自动重传请求(HARQ,Hybrid Automatic Repeat reQuest)机制,因此,针对V2X技术,以实现基于HARQ机制的数据传输是需要解决的一个问题。
发明内容
本发明实施例期望提供一种数据传输的方法、设备及计算机存储介质。
本发明实施例的技术方案可以如下实现:
第一方面,本发明实施例提供了一种数据传输方法,包括:
发送数据时,启动第一定时器;根据数据接收端发送的反馈信息以及所述第一定时器的状态,确定是否向所述数据接收端进行HARQ重传。
第二方面,本发明实施例提供了一种数据传输方法,包括:
接收到数据后,启动第二定时器;
确定所述数据的第一接收状态;
根据所述第一接收状态确定是否在所述第二定时器的计时时间内尝试发送第一反馈信息。
第三方面,本发明实施例提供了一种数据发送端设备,包括发送部分、第一定时器控制部分和第一确定部分;其中,所述发送部分,配置为发送数据;
所述第一定时器控制部分,配置为在所述发送部分发送数据时,启动第一定时器;
所述第一确定部分,配置为根据数据接收端发送的反馈信息以及所述第一定时器的状态,确定是否向所述数据接收端进行HARQ重传。
第四方面,本发明实施例提供了一种数据接收端设备,包括接收部分、第二定时器控制部分和第二确定部分,其中,所述接收部分,配置为接收数据;
所述第二定时器控制部分,配置为所述接收部分接收到数据后,启动第二定时器;
所述第二确定部分,配置为确定所述数据的第一接收状态;
根据所述第一接收状态确定是否在所述第二定时器的计时时间内尝试发送第一反馈信息。
第五方面,本发明实施例提供了一种数据发送端设备,包括:第一网络接口,第一存储器和第一处理器;其中,
所述第一网络接口,用于在与其他外部网元之间进行收发信息过程中,信号的接收和发送;
所述第一存储器,用于存储能够在第一处理器上运行的计算机程序;
所述第一处理器,用于在运行所述计算机程序时,执行第一方面所述方法的步骤。
第六方面,本发明实施例提供了一种数据接收端设备,包括第二网络接口、第二存储器和第二处理器;
其中,所述第二网络接口,用于在与其他外部网元之间进行收发信息过程中,信号的接收和发送;
所述第二存储器,用于存储能够在第二处理器上运行的计算机程序;
所述第二处理器,用于在运行所述计算机程序时,执行第二方面所述方法的步骤。
第七方面,本发明实施例提供了一种计算机存储介质,所述计算机存储介质存储有数据传输的程序,所述数据传输的程序被至少一个处理器执行时实现第一方面或第二方面所述的方法的步骤。
本发明实施例提供了一种数据传输的方法、设备及计算机存储介质; 在本发明实施例的技术方案中,数据接收端设置定时器,并且根据定时器的计时状态和数据的接收结果确定反馈信息;数据发送端设置定时器,并且根据定时器的计时状态和接收端的反馈信息确定是否进行HARQ重传。从而针对V2X技术,实现了基于HARQ机制的数据传输。
附图说明
图1为车联网中的模式3的场景示意图;
图2为车联网中的模式4的场景示意图;
图3为本发明实施例提供的一种信息传输方法流程示意图;
图4为本发明实施例提供的另一种信息传输方法流程示意图;
图5为本发明实施例提供的数据发送端设备的组成示意图;
图6为本发明实施例提供的数据发送端设备的具体硬件结构示意图;
图7为本发明实施例提供的一种数据接收端设备的组成示意图;
图8为本发明实施例提供的另一种数据接收端设备的组成示意图;
图9为本发明实施例提供的一种数据接收端设备的具体硬件结构示意图;
图10为本发明实施例提供的一种数据传输的系统组成示意图。
具体实施方式
为了能够更加详尽地了解本发明实施例的特点与技术内容,下面结合附图对本发明实施例的实现进行详细阐述,所附附图仅供参考说明之用,并非用来限定本发明实施例。
为便于理解本发明实施例的技术方案,以下分别对车联网中的模式3和模式4进行解释说明。
模式3:如图1所示,车载终端的传输资源是由基站,比如LTE中的演进基站(eNB,evolved NodeB)或新空口(NR,New Radio)中的5G基站(gNB)所分配的,具体地,基站通过下行链路(DL,Down Link)向车载终端下发用于指示授权(Grant)资源的控制消息;而后,车载终端根据基站分配的资源在SL上进行数据的发送。在模式3中,基站可以为车载终端分配单次传输的资源,也可以为终端分配半静态传输的资源。
模式4:如图2所示,车载终端采用侦听+预留的传输方式。车载终端在资源池中通过侦听的方式获取可用的传输资源集合,车载终端从该传输资源集合中随机选取一个资源进行数据的传输。由于车联网系统中的业务具有周期性特征,因此车载终端通常采用半静态传输的方式,即车载终端 选取一个传输资源后,就会在多个传输周期中持续的使用该资源,从而降低资源重选以及资源冲突的概率。车载终端会在本次传输的控制信息中携带预留下次传输资源的信息,从而使得其他终端可以通过检测该车载终端的控制信息判断这块资源是否被该车载终端预留和使用,达到降低资源冲突的目的。
对于上述两种模式的示例性说明,在V2X技术中,当发送端进行数据发送之后,接收该发送数据的接收端的数量可能不止一个,也就是说,数据传输场景可能是对于发送数据进行组播的场景,在此场景下,如果需要实现基于HARQ机制的数据传输,那么只要有一个接收端没有接收到正确的发送数据,那么发送端就需要进行重传。这对信道资源是一种极大的消耗。
因此,如何能够平衡信道资源利用率和发送数据的正确接收率,是在V2X技术中实现基于HARQ机制数据传输的重要问题。针对该问题,本发明实施例通过以下实施例进行阐述和说明。
可以理解地,本发明实施例的全部技术方案,不仅适用于车联网系统中,也可以适用于其他端到端通信系统中,本发明实施例中的所述终端可以为车载终端、手持终端、掌上电脑(PDA,Personal Digital Assistant)、可穿戴式终端等等,本发明实施例中的所述网络可以为NR网络、LTE网络等等。
实施例一
参见图3,其示出了本发明实施例提供的一种数据传输的方法,该方法可以应用于数据发送端,该方法可以包括:
S301:发送数据时,启动第一定时器;
S302:根据数据接收端发送的反馈信息以及所述第一定时器的状态,确定是否向所述数据接收端进行HARQ重传。
在图3所示的技术方案中,数据发送端通过第一定时器的计时状态以及数据接收端发送的反馈信息确定是否进行HARQ重传,在组播场景下,即使出现反馈信息的时频资源出现冲突的情况,也能够根据反馈信息在第一定时器计时状态的接收情况确定HARQ重传。从而针对V2X技术,实现了基于HARQ机制的数据传输,避免了时频资源冲突导致HARQ重传无法顺利实现。
在图3所示的技术方案中,所述第一定时器可以预先设定的用于计时的第一时间段,当发送数据时,启动第一定时器按照第一时间段进行计时。 对于第一定时器来说,其状态可以包括:定时器超时以及定时器没有超时。
在具体实现时,可根据实际情况,预先设定第一定时器进行计时的第一时间段。当第一定时器的计时达到设定数值后,确定第一定时器超时;反之,则确定第一定时器没有超时。比如:设置第一时间段为4ms,第一定时器启动之后,可以从4ms开始倒计时,当第一定时器计时为0,则认为第一定时器超时;当第一定时器计时大于0时,则认为定时器没有超时。
对于图3所示的技术方案,数据发送端可以启动第一定时器后,在第一定时器的计时过程中等待接收端的反馈信息。对于反馈信息来说,指的是数据接收端所反馈的用于指示数据接收正确与否的指示信息,因此,在本发明实施例中,数据接收端所发送的反馈信息具体可以用于指示数据接收错误的指示信息,或者,该反馈信息用于指示数据接收正确的指示信息。
基于上述反馈信息可能的具体内容,在一种可能的实现方式中,相应于反馈信息用于指示数据接收错误的指示信息,对于步骤S302,所述根据数据接收端发送的反馈信息以及所述第一定时器的状态,确定是否向所述数据接收端进行HARQ重传,可以包括:若所述第一定时器计时超时前没有接收到所述反馈信息,则确定不向所述数据接收端进行HARQ重传。可以理解地,若反馈信息用于指示数据接收错误,那么在第一定时器计时超时前没有接收到该反馈信息,数据发送端就可以认为是数据接收端正确接收数据,因此,就不需要向数据接收端针对发送数据进行HARQ重传。
相应来说,在该实现方式中,还可以包括:若所述第一定时器计时超时前接收到所述反馈信息,则确定向所述数据接收端进行HARQ重传。可以理解地,数据发送端在第一定时器计时超时前接收到该反馈信息,那么数据发送端就能够基于该反馈信息所指示的内容来确定需要向数据接收端针对发送数据进行HARQ重传。
基于上述反馈信息可能的具体内容,在另一种可能的实现方式中,相应于反馈信息用于指示数据接收正确的指示信息,对于步骤S302,所述根据数据接收端发送的反馈信息以及所述第一定时器的状态,确定是否向所述数据接收端进行HARQ重传,可以包括:若第一定时器计时超时前内没有接收到所述反馈信息,则确定向所述数据接收端进行HARQ重传。可以理解地,若反馈信息用于指示数据接收正确,那么在第一定时器计时超时前没有接收到该反馈信息,数据发送端就可以认为是数据接收端并没有正确接收数据,因此,就需要向数据接收端针对发送数据进行HARQ重传。
相应来说,在该实现方式中,还可以包括:若所述第一定时器计时超 时前接收到所述反馈信息,则确定不向所述数据接收端进行HARQ重传。可以理解地,数据发送端在第一定时器计时超时前接收到该反馈信息,那么数据发送端就能够基于该反馈信息所指示的内容来获知数据接收端接收数据正确,因此,就不需要向数据接收端针对发送数据进行HARQ重传。
对于上述两种实现方式,若数据发送端向数据接收端进行HARQ重传,那么数据发送端发送HARQ重传数据时就可以重新启动第一定时器,并按照上述方案继续根据第一定时器的计时状态以及针对HARQ重传数据的反馈信息来确定是否针对HARQ重传数据进行HARQ重传。
若数据发送端不向数据接收端进行HARQ重传,那么就可以向数据接收端发送新的数据。数据发送端就可以重新启动第一定时器,并按照上述方案继续根据第一定时器的计时状态以及针对新的数据的反馈信息来确定是否针对新的数据进行HARQ重传。
对于图3所示的技术方案,在一种可能的实现方式中,还可以包括:
在所述第一定时器计时超时前接收到所述反馈信息,停止计时。
需要说明的是,在该实现方式中,无论反馈信息用于指示数据接收错误的指示信息,还是用于指示数据接收正确的指示信息,当数据发送端接收到反馈信息后,针对发送数据的传输已经完成,后续数据发送端会根据反馈信息指示的数据接收正确与否来确定是进行HARQ重传或发送新的数据,那么数据发送端可以在接收到反馈信息后,停止第一定时器的计时。
对于图3所示的技术方案,在一种可能的实现方式中,还可以包括:
在所述第一定时器计时超时前接收到所述反馈信息,重新启动所述第一定时器。
需要说明的是,在该实现方式中,数据发送端在接收到反馈信息之后,可以通过重新启动第一定时器来针对后续数据发送的反馈信息的接收情况进行重新计时。
对于本实施例的技术方案,考虑到反馈信息时频资源的冲突情况,数据发送端通过第一定时器的计时状态来确定反馈信息的接收情况,并根据接收情况以及反馈信息具体的指示内容来确定是否进行HARQ重传,从而针对V2X技术,实现了基于HARQ机制的数据传输,避免了时频资源冲突导致HARQ重传无法顺利实现。
实施例二
基于上述实施例发送端的数据传输方法,本发明实施例提出一种数据 传输方法。参见图4,该方法可以应用于数据接收端,该方法包括:
S401:接收到数据后,启动第二定时器;
S402:确定所述数据的第一接收状态;
S403:根据所述第一接收状态确定是否在所述第二定时器的计时时间内尝试发送第一反馈信息。
对于图4所示的技术方案,数据接收端在发送反馈信息时,针对V2X技术中较易出现的时频资源冲突的情况,通过第二定时器的计时发送针对数据的第一反馈信息,避免了时频资源冲突导致HARQ重传无法顺利实现。
在图4所示的技术方案中,第二定时器的具体工作机制与前述实施例中所述的第一定时器的工作机制相同。优选来说,第二定时器进行计时的第二时间段可以与第一定时器进行计时所采用的第一时间段设置相同,本实施例对此不做赘述。
在图4所示的技术方案中,所述第一接收状态对应于步骤S401中接收数据的接收状态,具体可以包括:正确接收状态以及错误接收状态。
需要说明的是,当数据接收端接收到数据后,可以对接收到的数据进行解析,并且根据解析结果来确定该数据的第一接收状态。具体来说当数据接收端能够正确解析所述数据时,所述第一接收状态为正确接收状态;当所述数据接收端不能解析所述数据或者不能正确解析所述数据时,所述第一接收状态为错误接收状态。
在图4所示的技术方案中,上述数据接收端可以将第一接收状态承载于反馈信息中发送至数据发送端,以使得数据发送端依据反馈信息中所指示的第一接收状态确定是否针对数据进行HARQ重传。具体数据发送端如何确定是否进行HARQ重传的实现过程参见实施例一所述,在此不再赘述。
相应于第一接收状态为错误接收状态,对于图4所示的技术方案,在一种可能的实现方式中,根据所述第一接收状态确定是否在所述第二定时器的计时时间内尝试发送第一反馈信息,包括:
相应于第一反馈信息中所指示的第一接收状态为错误接收所述数据时,若所述数据接收正确,则确定不在第二定时器的计时时间内尝试发送第一反馈信息。
可以理解地,由于第一反馈信息反馈的内容为错误接收所述数据,那么如果数据接收正确,数据接收端就可以无需要向数据发送端发送第一反馈信息;针对此情况,相应于数据发送端,若在一定的时间内没有接收到第一反馈信息,那么数据发送端就可以认为数据接收端正确接收到所述数 据,就无需针对该数据进行HARQ重传。
相应来说,在该实现方式中,还可以包括:若所述数据接收错误,则确定在所述第二定时器的计时时间内尝试发送所述第一反馈信息。
可以理解地,若数据接收端接收数据错误,则符合了第一反馈信息所指示的内容和情况,此时,考虑到反馈信息在传输时所使用时频资源的冲突情况,数据接收端可以在第二定时器的计时时间内尝试发送第一反馈信息;在具体实施过程中,数据接收端可以通过NACK信号指示第一接收状态为错误接收所述数据。数据发送端在接收到该第一反馈信息后,能够获知数据接收错误,从而确定针对该数据进行HARQ重传。
相应于第一接收状态为错误接收状态,对于图4所示的技术方案,在一种可能的实现方式中,根据所述第一接收状态确定是否在所述第二定时器的计时时间内尝试发送第一反馈信息,包括:
相应于所述第一反馈信息中所指示的第一接收状态为正确接收所述数据;若所述数据接收正确,则确定在所述第二定时器的计时时间内尝试发送第一反馈信息。
可以理解地,由于第一反馈信息所反馈的内容为正确接收所述数据,那么如果数据接收正确,符合第一反馈信息所指示的内容和情况,此时,考虑到反馈信息在传输时所使用时频资源的冲突情况,数据接收端可以在第二定时器的计时时间内尝试发送第一反馈信息;在具体实施过程中,数据接收端可以通过ACK信号指示第一接收状态为错误接收所述数据。数据发送端在接收到该第一反馈信息后,能够获知数据接收正确,从而无需针对该数据进行HARQ重传。
相应来说,在该实现方式中,还可以包括:
若所述数据接收错误,则确定不在所述第二定时器的计时时间内尝试发送所述第一反馈信息。
可以理解地,由于第一反馈信息反馈的内容为正确接收所述数据,那么如果数据接收错误,数据接收端就无需向数据发送端发送第一反馈信息;针对此情况,相应于数据发送端,若在一定的时间内没有接收到第一反馈信息,那么数据发送端就可以认为数据接收端接收所述数据错误,因此,就需要针对该数据进行HARQ重传。
针对本实施例中上述技术方案,考虑到反馈信息传输过程中可能出现的时频资源冲突,在一种可能的实现方式中,所述方法还包括:
相应于确定在所述第二定时器的计时时间内尝试发送第一反馈信 息;若在所述第二定时器超时前未成功发送所述第一反馈信息,则取消发送所述第一反馈信息。
可以理解地,若在第二定时器超时前还未成功发送第一反馈信息,那么可以说明反馈信息传输的时频资源冲突情况严重,为了避免时频资源的冲突情况恶化,可以取消发送该第一反馈消息。
针对本实施例中上述技术方案,在一种可能的实现方式中,无论第一反馈信息所指示的内容和情况,都会影响数据发送端确定是否针对数据进行HARQ重传,那么,若接收到所述数据的HARQ重传数据或新的数据,说明数据发送端已经完成了数据的HARQ重传,因此,数据接收端还可以取消发送所述第一反馈信息。可以理解地,在此实现方式中,若第一反馈信息所指示的第一接收状态为错误接收所述数据,那么当数据接收端还未发送第一反馈信息就接收到针对数据的HARQ重传数据,那么数据接收端就可以直接基于步骤S401中所接收到的数据以及该数据的HARQ重传数据获取该数据的真实内容。若第一反馈信息所指示的第一接收状态为正确接收所述数据,那么当数据接收端还未发送第一反馈信息就接收到针对数据的HARQ重传数据,基于接收数据的正确性,数据接收端就可以直接丢弃针对数据的HARQ重传数据。
针对该实现方式中的HARQ重传数据,数据接收端仍然可以对其接收状态确定是否尝试发送反馈信息,基于此,所述方法还包括:
相应于接收到所述数据的HARQ重传数据,根据所述数据与所述数据的HARQ重传数据确定所述数据的第二接收状态,并基于所述第二接收状态确定是否发送第二反馈信息;其中,所述第二反馈信息用于表征所述第二接收状态为错误接收所述数据或正确接收所述数据。
对于本实施例的技术方案,考虑到反馈信息时频资源的冲突情况,数据接收端基于接收数据的接收状态确定在第二定时器的计时时间内是否发送第一反馈信息,以指示数据发送端确定是否进行HARQ重传,从而针对V2X技术,实现了基于HARQ机制的数据传输,避免了时频资源冲突导致HARQ重传无法顺利实现。
实施例三
基于前述实施例相同的发明构思,参见图5,其示出了本发明实施例提供的一种数据发送端设备50,包括发送部分501、第一定时器控制部分502和第一确定部分503;其中,所述发送部分501,配置为发送数据;
所述第一定时器控制部分502,配置为在所述发送部分501发送数据 时,启动第一定时器;
所述第一确定部分503,配置为根据数据接收端发送的反馈信息以及所述第一定时器的状态,确定是否向所述数据接收端进行HARQ重传。
在上述方案中,所述第一确定部分503,配置为若所述第一定时器计时超时前没有接收到所述反馈信息,则确定不向所述数据接收端进行HARQ重传。
在上述方案中,所述第一确定部分503,还配置为若所述第一定时器计时超时前接收到所述反馈信息,则确定向所述数据接收端进行HARQ重传。
在上述方案中,所述第一确定部分503,配置为若所述第一定时器计时超时前内没有接收到所述反馈信息,则确定向所述数据接收端进行HARQ重传。
在上述方案中,所述第一确定部分503,还配置为若所述第一定时器计时超时前接收到所述反馈信息,则确定不向所述数据接收端进行HARQ重传。
在上述方案中,所述第一定时器控制部分502,还配置为在所述第一定时器计时超时前接收到所述反馈信息,停止计时。
在上述方案中,所述第一定时器控制部分502,还配置为在所述第一定时器计时超时前接收到所述反馈信息,重新启动所述第一定时器。
在上述方案中,所述第一定时器控制部分502,还配置为向所述数据接收端进行HARQ重传时,重新启动所述第一定时器。
可以理解地,在本实施例中,“部分”可以是部分电路、部分处理器、部分程序或软件等等,当然也可以是单元,还可以是模块也可以是非模块化的。
另外,在本实施例中的各组成部分可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能模块的形式实现。
所述集成的单元如果以软件功能模块的形式实现并非作为独立的产品进行销售或使用时,可以存储在一个计算机可读取存储介质中,基于这样的理解,本实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计 算机设备(可以是个人计算机,服务器,或者网络设备等)或processor(处理器)执行本实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(ROM,Read Only Memory)、随机存取存储器(RAM,Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
因此,本实施例提供了一种计算机存储介质,该计算机存储介质存储有数据传输的程序,所述数据传输的程序被至少一个处理器执行时实现上述实施例一所述的方法的步骤。
基于上述数据发送端设备50以及计算机存储介质,参见图6,其示出了本发明实施例提供的一种网络侧设备50的具体硬件结构,可以包括:第一网络接口601、第一存储器602和第一处理器603;各个组件通过总线系统604耦合在一起。可理解,总线系统604用于实现这些组件之间的连接通信。总线系统604除包括数据总线之外,还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见,在图6中将各种总线都标为总线系统604。其中,第一网络接口601,用于在与其他外部网元之间进行收发信息过程中,信号的接收和发送;
第一存储器602,用于存储能在第一处理器603上运行的计算机程序;
第一处理器603,用于在运行所述计算机程序时,执行:
发送数据时,启动第一定时器;
根据数据接收端发送的反馈信息以及所述第一定时器的状态,确定是否向所述数据接收端进行HARQ重传。
可以理解,本发明实施例中的第一存储器602可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(Read-Only Memory,ROM)、可编程只读存储器(Programmable ROM,PROM)、可擦除可编程只读存储器(Erasable PROM,EPROM)、电可擦除可编程只读存储器(Electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory,RAM),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的RAM可用,例如静态随机存取存储器(Static RAM,SRAM)、动态随机存取存储器(Dynamic RAM,DRAM)、同步动态随机存取存储器(Synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM,DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM,ESDRAM)、同步连 接动态随机存取存储器(Synchlink DRAM,SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM,DRRAM)。本文描述的系统和方法的第一存储器602旨在包括但不限于这些和任意其它适合类型的存储器。
而第一处理器603可能是一种集成电路芯片,具有信号的处理能力。在实现过程中,上述方法的各步骤可以通过第一处理器603中的硬件的集成逻辑电路或者软件形式的指令完成。上述的第一处理器603可以是通用处理器、数字信号处理器(Digital Signal Processor,DSP)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现成可编程门阵列(Field Programmable Gate Array,FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本发明实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本发明实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成,或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于第一存储器602,第一处理器603读取第一存储器602中的信息,结合其硬件完成上述方法的步骤。
可以理解的是,本文描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现,处理单元可以实现在一个或多个专用集成电路(Application Specific Integrated Circuits,ASIC)、数字信号处理器(Digital Signal Processing,DSP)、数字信号处理设备(DSP Device,DSPD)、可编程逻辑设备(Programmable Logic Device,PLD)、现场可编程门阵列(Field-Programmable Gate Array,FPGA)、通用处理器、控制器、微控制器、微处理器、用于执行本申请所述功能的其它电子单元或其组合中。
对于软件实现,可通过执行本文所述功能的模块(例如过程、函数等)来实现本文所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
具体来说,数据发送端设备50中的第一处理器603还配置为运行计算机程序时,执行前述实施例一中所述的方法步骤,这里不再进行赘述。
实施例四
基于前述实施例相同的发明构思,参见图7,其示出了本发明实施例提供的一种数据接收端设备70的组成,包括接收部分701、第二定时器控制部分702和第二确定部分703,其中,所述接收部分701,配置为接收数据;
所述第二定时器控制部分702,配置为所述接收部分701接收到数据后,启动第二定时器;
所述第二确定部分703,配置为确定所述数据的第一接收状态;
根据所述第一接收状态确定是否在所述第二定时器的计时时间内尝试发送第一反馈信息。
在上述方案中,所述第二确定部分703,配置为相应于所述第一反馈信息中所指示的第一接收状态为错误接收所述数据;若所述数据接收正确,则确定不在所述第二定时器的计时时间内尝试发送第一反馈信息。
在上述方案中,所述第二确定部分703,还配置为若所述数据接收错误,则确定在所述第二定时器的计时时间内尝试发送所述第一反馈信息。
在上述方案中,所述第二确定部分703,配置为相应于所述第一反馈信息中所指示的第一接收状态为正确接收所述数据;若所述数据接收正确,则确定在所述第二定时器的计时时间内尝试发送第一反馈信息。
在上述方案中,所述第二确定部分703,还配置为若所述数据接收错误,则确定不在第二定时器的计时时间内尝试发送所述第一反馈信息。
在上述方案中,参见图8,所述数据接收端设备70还包括发送控制部分704,配置为相应于确定在所述第二定时器的计时时间内尝试发送第一反馈信息;若在所述第二定时器超时前未成功发送所述第一反馈信息,则取消发送所述第一反馈信息。
在上述方案中,如图8所示,发送控制部分704,配置为若接收到所述数据的HARQ重传数据或新的数据,则取消发送所述第一反馈信息。
在上述方案中,所述第二确定部分703,还配置为相应于接收到所述数据的HARQ重传数据,根据所述数据与所述数据的HARQ重传数据确定所述数据的第二接收状态,并基于所述第二接收状态确定是否发送第二反馈信息;其中,所述第二反馈信息用于表征所述第二接收状态为错误接收所述数据或正确接收所述数据。
另外,本实施例提供了一种计算机存储介质,该计算机存储介质存储有数据传输的程序,所述数据传输的程序被至少一个处理器执行时实现上述实施例二所述的方法的步骤。针对计算机可读介质的具体阐述,参见实 施例三中的说明,在此不再赘述。
基于上述数据接收端设备70以及计算机存储介质,参见图9,其示出了本发明实施例提供的一种数据接收端设备70的具体硬件结构,包括:第二网络接口901、第二存储器902和第二处理器903;各个组件通过总线系统904耦合在一起。可理解,总线系统904用于实现这些组件之间的连接通信。总线系统904除包括数据总线之外,还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见,在图9中将各种总线都标为总线系统904。其中,
其中,所述第二网络接口901,用于在与其他外部网元之间进行收发信息过程中,信号的接收和发送;
第二存储器902,用于存储能够在第二处理器903上运行的计算机程序;
第二处理器903,用于在运行所述计算机程序时,执行:接收到数据后,启动第二定时器;确定所述数据的第一接收状态;根据所述第一接收状态确定是否在所述第二定时器的计时时间内尝试发送第一反馈信息。
可以理解地,本实施例中数据接收端70的具体硬件结构中的组成部分,与实施例三中的相应部分类似,在此不做赘述。
具体来说,数据接收端70中的第二处理器903,还配置为运行所述计算机程序时,执行前述实施例二中所述的方法步骤,这里不再进行赘述。
基于上述实施例,参见图10,其示出了本发明实施例提供的一种数据传输的系统10,应用于设备到设备D2D中的终端,甚至可以应用于V2X技术中终端;包括第一终端1001和第二终端1002;其中,所述第一终端1001为前述任一实施例中所述的数据发送端50;所述第二终端1002为前述任一实施例中所述的数据接收端70。
以上所述,仅为本发明的较佳实施例而已,并非用于限定本发明的保护范围。
工业实用性
本发明实施例中,考虑到反馈信息时频资源的冲突情况,数据发送端通过第一定时器的计时状态来确定反馈信息的接收情况,并根据接收情况以及反馈信息具体的指示内容来确定是否进行HARQ重传,从而针对V2X技术,实现了基于HARQ机制的数据传输,避免了时频资源冲突导致HARQ重传无法顺利实现。

Claims (36)

  1. 一种数据传输的方法,所述方法应用于数据发送端,所述方法包括:
    发送数据时,启动第一定时器;
    根据数据接收端发送的反馈信息以及所述第一定时器的状态,确定是否向所述数据接收端进行HARQ重传。
  2. 根据权利要求1所述的方法,其中,所述根据数据接收端发送的反馈信息以及所述第一定时器的状态,确定是否向所述数据接收端进行HARQ重传,包括:
    若所述第一定时器计时超时前没有接收到所述反馈信息,则确定不向所述数据接收端进行HARQ重传。
  3. 根据权利要求2所述的方法,其中,所述方法还包括:
    若所述第一定时器计时超时前接收到所述反馈信息,则确定向所述数据接收端进行HARQ重传。
  4. 根据权利要求1所述的方法,其中,所述根据数据接收端发送的反馈信息以及所述第一定时器的状态,确定是否向所述数据接收端进行HARQ重传,包括:
    若所述第一定时器计时超时前内没有接收到所述反馈信息,则确定向所述数据接收端进行HARQ重传。
  5. 根据权利要求4所述的方法,其中,所述方法还包括:
    若所述第一定时器计时超时前接收到所述反馈信息,则确定不向所述数据接收端进行HARQ重传。
  6. 根据权利要求1所述的方法,其中,所述方法还包括:
    在所述第一定时器计时超时前接收到所述反馈信息,停止计时。
  7. 根据权利要求1所述的方法,其中,所述方法还包括:
    在所述第一定时器计时超时前接收到所述反馈信息,重新启动所述第一定时器。
  8. 根据权利要求1所述的方法,其中,所述方法还包括:
    数据发送端向所述数据接收端进行HARQ重传时,重新启动所述第一定时器。
  9. 一种数据传输的方法,所述方法应用于数据接收端,所述方法包括:
    接收到数据后,启动第二定时器;
    确定所述数据的第一接收状态;
    根据所述第一接收状态确定是否在所述第二定时器的计时时间内尝试发送第一反馈信息。
  10. 根据权利要求9所述的方法,其中,根据所述第一接收状态确定是否在所述第二定时器的计时时间内尝试发送第一反馈信息,包括:
    相应于所述第一反馈信息中所指示的第一接收状态为错误接收所述数据;若所述数据接收正确,则确定不在所述第二定时器的计时时间内尝试发送第一反馈信息。
  11. 根据权利要求10所述的方法,其中,所述方法还包括:
    若所述数据接收错误,则确定在所述第二定时器的计时时间内尝试发送所述第一反馈信息。
  12. 根据权利要求9所述的方法,其中,根据所述第一接收状态确定是否在所述第二定时器的计时时间内尝试发送第一反馈信息,包括:
    相应于所述第一反馈信息中所指示的第一接收状态为正确接收所述数据;若所述数据接收正确,则确定在所述第二定时器的计时时间内尝试发送第一反馈信息。
  13. 根据权利要求12所述的方法,其中,所述方法还包括:
    若所述数据接收错误,则确定不在所述第二定时器的计时时间内尝试发送所述第一反馈信息。
  14. 根据权利要求9至13任一项所述的方法,其中,所述方法还包括:
    相应于确定在所述第二定时器的计时时间内尝试发送第一反馈信息;若在所述第二定时器超时前未成功发送所述第一反馈信息,则取消发送所述第一反馈信息。
  15. 根据权利要求9至13任一项所述的方法,其中,所述方法还包括:
    若接收到所述数据的HARQ重传数据或新的数据,则取消发送所述第一反馈信息。
  16. 根据权利要求15所述的方法,其中,所述方法还包括:
    相应于接收到所述数据的HARQ重传数据,根据所述数据与所述数据的HARQ重传数据确定所述数据的第二接收状态,并基于所述第二接收状态确定是否发送第二反馈信息;其中,所述第二反馈信息用于表征所述第二接收状态为错误接收所述数据或正确接收所述数据。
  17. 一种数据发送端设备,包括发送部分、第一定时器控制部分和第一确定部分;其中,所述发送部分,配置为发送数据;
    所述第一定时器控制部分,配置为在所述发送部分发送数据时,启动第一定时器;
    所述第一确定部分,配置为根据数据接收端发送的反馈信息以及所述第一定时器的状态,确定是否向所述数据接收端进行HARQ重传。
  18. 根据权利要求17所述的数据发送端设备,其中,所述第一确定部分,配置为若所述第一定时器计时超时前没有接收到所述反馈信息,则确定不向所述数据接收端进行HARQ重传。
  19. 根据权利要求18所述的数据发送端设备,其中,所述第一确定部分,还配置为若所述第一定时器计时超时前接收到所述反馈信息,则确定向所述数据接收端进行HARQ重传。
  20. 根据权利要求17所述的数据发送端设备,其中,所述第一确定部分,配置为若所述第一定时器计时超时前内没有接收到所述反馈信息,则确定向所述数据接收端进行HARQ重传。
  21. 根据权利要求20所述的数据发送端设备,其中,所述第一确定部分,还配置为若所述第一定时器计时超时前接收到所述反馈信息,则确定不向所述数据接收端进行HARQ重传。
  22. 根据权利要求17所述的数据发送端设备,其中,所述第一定时器控制部分,还配置为在所述第一定时器计时超时前接收到所述反馈信息,停止计时。
  23. 根据权利要求17所述的数据发送端设备,其中,所述第一定时器控制部分,还配置为在所述第一定时器计时超时前接收到所述反馈信息,重新启动所述第一定时器。
  24. 根据权利要求17所述的数据发送端设备,其中,所述第一定时器控制部分,还配置为向所述数据接收端进行HARQ重传时,重新启动所述第一定时器。
  25. 一种数据接收端设备,包括接收部分、第二定时器控制部分和第二确定部分,其中,所述接收部分,配置为接收数据;
    所述第二定时器控制部分,配置为所述接收部分接收到数据后,启动第二定时器;
    所述第二确定部分,配置为确定所述数据的第一接收状态;
    根据所述第一接收状态确定是否在所述第二定时器的计时时间内尝 试发送第一反馈信息。
  26. 根据权利要求25所述的数据接收端设备,其中,所述第二确定部分,配置为相应于所述第一反馈信息中所指示的第一接收状态为错误接收所述数据;若所述数据接收正确,则确定不在所述第二定时器的计时时间内尝试发送第一反馈信息。
  27. 根据权利要求26所述的数据接收端设备,其中,所述第二确定部分,还配置为若所述数据接收错误,则确定在所述第二定时器的计时时间内尝试发送所述第一反馈信息。
  28. 根据权利要求25所述的数据接收端设备,其中,所述第二确定部分,配置为相应于所述第一反馈信息中所指示的第一接收状态为正确接收所述数据;若所述数据接收正确,则确定在所述第二定时器的计时时间内尝试发送第一反馈信息。
  29. 根据权利要求28所述的数据接收端设备,其中,所述第二确定部分,还配置为若所述数据接收错误,则确定不在所述第二定时器的计时时间内尝试发送所述第一反馈信息。
  30. 根据权利要求25至29任一项所述的数据接收端设备,其中,所述数据接收端设备还包括发送控制部分,配置为相应于确定在所述第二定时器的计时时间内尝试发送第一反馈信息;若在所述第二定时器超时前未成功发送所述第一反馈信息,则取消发送所述第一反馈信息。
  31. 根据权利要求25至29任一项所述的数据接收端设备,其中,所述数据接收端设备还包括发送控制部分,配置为若接收到所述数据的HARQ重传数据或新的数据,则取消发送所述第一反馈信息。
  32. 根据权利要求25至29任一项所述的数据接收端设备,其中,所述第二确定部分,还配置为相应于接收到所述数据的HARQ重传数据,根据所述数据与所述数据的HARQ重传数据确定所述数据的第二接收状态,并基于所述第二接收状态确定是否发送第二反馈信息;其中,所述第二反馈信息用于表征所述第二接收状态为错误接收所述数据或正确接收所述数据。
  33. 一种数据发送端设备,包括:第一网络接口,第一存储器和第一处理器;其中,
    所述第一网络接口,用于在与其他外部网元之间进行收发信息过程中,信号的接收和发送;
    所述第一存储器,用于存储能够在所述第一处理器上运行的计算机 程序;
    所述第一处理器,用于在运行所述计算机程序时,执行权利要求1至8任一项所述方法的步骤。
  34. 一种数据接收端设备,包括第二网络接口、第二存储器和第二处理器;
    其中,所述第二网络接口,用于在与其他外部网元之间进行收发信息过程中,信号的接收和发送;
    所述第二存储器,用于存储能够在第二处理器上运行的计算机程序;
    所述第二处理器,用于在运行所述计算机程序时,执行权利要求9至16任一项所述方法的步骤。
  35. 一种数据传输的系统,应用于设备到设备D2D中的终端;包括第一终端和第二终端;其中,所述第一终端为权利要求17至24以及权利要求33中任一项所述的数据发送端;所述第二终端为权利要求25至32以及权利要求34中任一项所述的数据接收端。
  36. 一种计算机存储介质,所述计算机存储介质存储有数据传输的程序,所述数据传输的程序被至少一个处理器执行时实现权利要求1至8中任一项或权利要求9至16中任一项所述的方法的步骤。
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