WO2018028539A1 - 一种上行重传方法、基站、ue和系统 - Google Patents

一种上行重传方法、基站、ue和系统 Download PDF

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Publication number
WO2018028539A1
WO2018028539A1 PCT/CN2017/096193 CN2017096193W WO2018028539A1 WO 2018028539 A1 WO2018028539 A1 WO 2018028539A1 CN 2017096193 W CN2017096193 W CN 2017096193W WO 2018028539 A1 WO2018028539 A1 WO 2018028539A1
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Prior art keywords
data
base station
sent
transmissions
receiving
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PCT/CN2017/096193
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English (en)
French (fr)
Inventor
许倩倩
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中兴通讯股份有限公司
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Publication of WO2018028539A1 publication Critical patent/WO2018028539A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end

Definitions

  • the present disclosure relates to, but is not limited to, the field of communication technologies, and in particular, an uplink retransmission method, a base station, a UE, and a system.
  • a user equipment (UE) transmits data to a base station at a time, and the UE and the base station complete data transmission through interaction. How to transmit data accurately and efficiently between the UE and the base station has become a hot research topic.
  • LTE Long Term Evolution
  • the LTE uplink may be a Hybrid Automatic Repeat ReQuest (HARQ) system, that is, each uplink transmission opportunity and the transmission subframe are in one-to-one correspondence, for example, if the maximum transmission frequency of the user is 5 times, the retransmission is performed.
  • the maximum transmission is 4 times, that is, the first uplink subframe of the 4 radio frames after the new transmission is the user's retransmission opportunity, and after the first subframe of the last radio frame of the 4 radio frames after the new transmission, the UE
  • the HARQ buffer of the transmission will be cleared, regardless of whether the transmission of the above four retransmissions is correct.
  • the number of uplink transmissions is not only limited by the maximum number of transmissions, but also limited by the transmission subframe, that is, the transmission opportunity and the transmission subframe are in one-to-one correspondence.
  • the data is retransmitted according to the maximum number of transmissions.
  • the transmission subframe is determined. If a retransmission subframe fails for retransmission, if the UE cannot retransmit the retransmission subframe for some reason (for example, insufficient data resources, insufficient control channel resources, insufficient scheduling opportunities, etc.) Corresponding retransmission opportunities are reduced, which in turn can lead to packet loss and affect network performance.
  • the present invention provides an uplink transmission method, a base station, a UE, and a system, which can determine whether the UE clears the HARQ buffer of the transmission by retransmitting the actual number of retransmissions of the subframe, and avoids a certain retransmission. For some reasons (such as insufficient data resources, insufficient control channel resources, insufficient scheduling opportunities, etc.), the UE cannot retransmit the retransmission subframes, fully utilize retransmission opportunities, and reduce packet loss, thereby improving the network. performance.
  • An embodiment of the present disclosure provides an uplink retransmission method, including:
  • the number of transmissions is used to represent the number of times of receiving the first data sent by the receiving UE;
  • acknowledgement information where the acknowledgement information is used to indicate whether the first data sent by the receiving UE is correct
  • the sending the transmission instruction to the UE according to the number of transmissions and the acknowledgement information includes:
  • the confirmation information indicates that the first data of the error is received, and when the number of transmissions is less than or equal to the maximum number of transmissions, a retransmission instruction is sent to the UE;
  • the confirmation information indicates that the first data is received correctly, or the number of transmissions is greater than the maximum number of transmissions, or the first data is received correctly, and the number of transmissions is greater than the maximum number of transmissions. Sending a new transmission instruction to the UE.
  • the method further includes:
  • the method further includes:
  • An embodiment of the present disclosure further provides an uplink retransmission method, including:
  • the method before the receiving the feedback information sent by the base station, the method further includes:
  • the first data is saved in a hybrid automatic repeat request HARQ buffer.
  • the method further includes:
  • the transmission instruction is a retransmission instruction, resending the first data to the base station according to the retransmission instruction;
  • the transmission instruction is a new transmission instruction, clearing the HARQ buffer according to the new transmission instruction; and sending second data to the base station according to the new transmission instruction.
  • the embodiment of the present disclosure further provides a base station, including:
  • the receiving module is configured to: receive the first data sent by the user equipment UE, and further set to: receive the acknowledgement information sent by the UE, where the acknowledgement information is used to indicate whether the first data sent by the receiving UE is correct;
  • the sending module is configured to send, according to the first data, feedback information to the UE, where the feedback information is used to represent content of the first data sent by the receiving UE, and is further configured to: according to the number of transmissions and Sending, by the acknowledgement information, a transmission instruction to the UE, where the transmission instruction is used to control content sent by the UE;
  • the accumulating module is configured to: accumulate a preset number of transmission times; and the number of transmissions is used to represent the number of times of receiving the first data sent by the UE.
  • the sending module is configured to: when the confirmation information indicates that the first data is received by an error, and the number of transmissions is less than or equal to the maximum number of transmissions, to the The UE sends a retransmission instruction; the confirmation information indicates that the correct first number is received And sending a new transmission instruction to the UE according to, or when the number of transmissions is greater than the maximum number of transmissions, or when the correct first data is received and the number of transmissions is greater than the maximum number of transmissions.
  • the receiving module is further configured to: receive the first data that is resent by the UE.
  • the base station further includes:
  • Zero setting module set to: zero the number of transmissions
  • the receiving module is further configured to: receive second data sent by the UE.
  • the embodiment of the present disclosure further provides a UE, including:
  • the sending module is configured to: send the first data to the base station; and further, set to: send the acknowledgement information to the base station;
  • the receiving module is configured to: receive feedback information sent by the base station, where the feedback information is used to indicate that the base station receives the content of the first data, and is further configured to: receive a transmission instruction sent by the base station, The transmission instruction is used to control content sent to the base station;
  • a determining module configured to: determine, according to the first data and the feedback information, the confirmation information, where the confirmation information is used to indicate whether the first data received by the base station is correct.
  • the UE further includes:
  • a saving module configured to: save the first data in a hybrid automatic repeat request HARQ cache;
  • a clearing module configured to: clear the HARQ cache according to the new transmission instruction; or,
  • the save module and the clearing module are the save module and the clearing module.
  • the sending module is further configured to: when the transmission instruction is a retransmission instruction, send the first data to the base station according to the retransmission instruction; When the instruction is newly transmitted, the second data is sent to the base station according to the new transmission instruction.
  • the embodiment of the present disclosure further provides a system, including:
  • the base station is configured to: receive first data sent by the UE; and send feedback information to the UE according to the first data, where the feedback information is used to represent content of the first data sent by the receiving UE; Adding a number of transmissions to a preset value, the number of transmissions being used to characterize the receiving UE Receiving the number of times of receiving the first data; receiving the confirmation information sent by the UE, the confirmation information is used to indicate whether the first data sent by the receiving UE is correct; according to the number of transmissions and the confirmation information, Transmitting, by the UE, a transmission instruction, where the transmission instruction is used to control content sent by the UE;
  • the UE is configured to: send first data to the base station; receive feedback information sent by the base station, where the feedback information is used to indicate that the base station receives the content of the first data; according to the first data and the Determining the confirmation information, the confirmation information is used to indicate whether the first data received by the base station is correct; receiving a transmission instruction sent by the base station, where the transmission instruction is used to control the base station The content sent.
  • Embodiments of the present disclosure also provide a computer readable storage medium storing computer executable instructions that, when executed, implement the uplink retransmission method described above.
  • An embodiment of the present disclosure provides an uplink retransmission method, a base station, a UE, and a system, which receive first data sent by a UE, and send feedback information to the UE according to the first data; accumulate a preset value for the number of transmissions; Acknowledgement information; and send a transmission instruction to the UE according to the number of transmissions and the confirmation information.
  • feedback information may be generated, and then the number of transmissions is accumulated by a preset value.
  • the base station will be compared with the transmission subframe, as long as the UE sends the first data. Adding a preset value to the transmission opportunity, the base station does not consider whether the first data is actually received by the base station.
  • the uplink retransmission method, the base station, the UE, and the number of transmissions in the system provided by the embodiment are that the base station receives the first data, and After the feedback information is sent to the UE, the number of transmissions is added to the preset value.
  • the number of transmissions indicates the number of times the UE actually transmits data to the base station, and some retransmission subframes are avoided for some reasons (for example, insufficient data resources, control channels) The resources are insufficient, the scheduling opportunities are insufficient, etc.), so that the UE cannot retransmit the retransmission subframes, fully utilize the retransmission opportunity, and reduce the packet loss, thereby improving network performance.
  • FIG. 1 is a flowchart of an uplink retransmission method according to an embodiment of the present disclosure
  • FIG. 2 is a flowchart of another uplink retransmission method according to an embodiment of the present disclosure
  • FIG. 3 is a flowchart of another uplink retransmission method according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of another base station according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a UE according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of another UE according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a system according to an embodiment of the present disclosure.
  • An embodiment of the present disclosure provides an uplink retransmission method, which can be applied to a base station. As shown in FIG. 1 , the method includes:
  • Step 101 Receive first data sent by a UE.
  • the UE may transmit the first data to the base station, and after receiving the first data, the base station may send feedback information to the UE, where the feedback information is used to indicate that the base station receives the content of the first data, and the UE determines, according to the feedback information, When the base station has correctly received the first data, the UE may not retransmit the first data, otherwise the UE may retransmit the first data.
  • the transmission of the first data may be performed by using a corresponding data packet.
  • the transmission of the data packet may be limited by the maximum number of transmissions.
  • the UE may Empty the HARQ cache and discard the packet.
  • the retransmission may include two modes: adaptive retransmission and non-adaptive retransmission.
  • the adaptive retransmission may require the base station to send an uplink grant to the UE in the retransmission subframe, and the non-adaptive retransmission may not require the uplink grant to be delivered.
  • the UE may transmit the retransmitted data according to the newly transmitted grant in the same uplink subframe as the new transmission. As shown in Table 1, the behavior of the UE for adaptive retransmission and non-adaptive retransmission is listed.
  • the acknowledgement character indicates that the first data received by the base station is correct; the negative acknowledgement (NACK) indicates that the first data received by the base station has an error; the None indicates that the UE does not receive the authorization indication; and the physical downlink control channel (
  • the Physical Downlink Control Channel is a set of physical resource particles that carry uplink and downlink control information, and may include a transport format, resource allocation, uplink scheduling grant, power control, and uplink retransmission signaling. Interest and so on.
  • Step 102 Send feedback information to the UE according to the first data.
  • the base station may send feedback information to the UE to inform the UE that the first data content is received by itself.
  • Step 103 Accumulate the preset number of transmission times.
  • the preset value in the embodiment takes one.
  • the base station may also add 1 to the number of transmissions of the UE for the transmission, indicating that the transmission opportunity is actually consumed.
  • Step 104 Receive confirmation information sent by the UE.
  • the acknowledgment information can be used to characterize whether the base station receives the first data sent by the UE.
  • the transmission process in this embodiment may be a closed loop feedback process, that is, the base station determines whether the first data received by itself is correct by receiving the acknowledgement information.
  • Step 105 Send a transmission instruction to the UE according to the number of transmissions and the confirmation information.
  • the transmission instruction may be used to control the content sent by the UE.
  • the transmission instruction may include a retransmission instruction and a new transmission instruction, where the retransmission instruction is used to control the UE to continue to send the first data, and the new transmission instruction is used to control The UE transmits the second data, which is new data compared to the first data.
  • the confirmation information indicates that the first data received is incorrect, and the number of transmissions is less than or equal to
  • a retransmission instruction may be sent to the UE; and the first data retransmitted by the UE may be received.
  • any mode of data transmission may have a data transmission error.
  • the base station sends the first data to the UE by using feedback information, and the UE can pass the The feedback information determines whether the base station correctly receives the first data, and uses the acknowledgement information to indicate, and can send the acknowledgement information to the base station.
  • the acknowledgement information indicates that the base station receives the wrong first data
  • the base station may not immediately Sending a retransmission instruction to the UE, because the transmission of the first data is also limited by the maximum number of transmissions, the base station may send a retransmission instruction to the UE to request the UE to resend when it determines that the number of transmissions is less than or equal to the maximum number of transmissions.
  • the acknowledgement information indicates that the correct first data is received, or the number of transmissions is greater than the maximum number of transmissions, or the first data is received and the number of transmissions is greater than the maximum number of transmissions, and a new transmission instruction may be sent to the UE;
  • the number of transmissions can be set to zero; the second data sent by the UE can be received.
  • the acknowledgement information indicates that the base station receives the correct first data, it may indicate that the first data has been successfully transmitted.
  • the UE may not retransmit the transmission, regardless of whether the number of transmissions is less than or equal to the maximum number of transmissions or the number of transmissions is greater than the maximum number of transmissions.
  • First data the base station may send a new transmission instruction to the UE, where the new transmission instruction is used to instruct the UE to send the second data; in addition, the base station may clear the number of transmissions previously counted for the first data transmission, and use the cleared transmission. The number of times is the transmission count of the next second data. Thereafter, the base station can receive the second data sent by the UE.
  • the sending of data to the base station by the UE may be an ongoing process.
  • the persistent process is only described by taking the first data and the second data as an example.
  • Case 2 The number of transmissions is greater than the maximum number of transmissions.
  • the base station When the base station determines that the number of transmissions of the first data is greater than the maximum number of transmissions, it may indicate that the transmission of the first data and the number of retransmissions have reached the upper transmission limit, that is, the maximum number of transmissions has been exceeded, in other words, the transmission of the first data. And the number of retransmissions has used all transmission opportunities, and only the transmission of the first data can be abandoned at this time.
  • the base station can send a new transmission instruction to the UE, and the new transmission The instruction is used to instruct the UE to send the second data; in addition, the base station may clear the number of transmissions previously counted for the first data transmission, and use the number of transmissions after the clearing is the transmission count of the next second data. Thereafter, the base station can receive the second data sent by the UE.
  • the base station will be compared with the transmission subframe, as long as the UE sends the first data. Adding a preset value to the transmission opportunity, the base station does not consider whether the first data is actually received by the base station.
  • the number of transmissions in this embodiment is that the base station receives the first data, and after sending the feedback information to the UE, the transmission times are accumulated.
  • the number of transmissions indicates the number of times the UE actually transmits data to the base station, and avoids a certain retransmission subframe due to some reasons (for example, insufficient data resources, insufficient control channel resources, insufficient scheduling opportunities, etc.) It is not possible to retransmit a retransmission subframe, make full use of retransmission opportunities, and reduce packet loss, thereby improving network performance.
  • An uplink retransmission method provided by an embodiment of the present disclosure is applicable to a UE. As shown in FIG. 2, the method includes:
  • Step 201 Send first data to a base station.
  • the UE may transmit the first data to the base station, so the UE may first send the first data to the base station.
  • Step 202 Receive feedback information sent by the base station.
  • the feedback information can be used to characterize the content that the base station actually receives the first data.
  • the base station sends the first data to the UE by using the feedback information, and the UE may determine, by using the feedback information, whether the base station correctly receives the first data, and the judgment result is represented by the confirmation information.
  • the confirmation information indicates that the base station may not immediately send a retransmission instruction to the UE when the base station receives the erroneous first data.
  • Step 203 Determine confirmation information according to the first data and the feedback information.
  • the confirmation information can be used to characterize whether the first data received by the base station is correct.
  • Step 204 Send confirmation information to the base station.
  • the acknowledgement information can be sent to the base station.
  • the confirmation information is made as the basis for the base station transmission instruction.
  • Step 205 Receive a transmission instruction sent by the base station.
  • the transmission instruction can be used to control the content that the UE will send to the base station.
  • the transmission instruction can be used to control the content that the UE will send to the base station.
  • Case 1 The transmission instruction is a retransmission instruction.
  • the base station does not receive the correct first data, and the actual number of transmissions is less than or equal to the maximum transmission and the number of times, so the UE can resend the first data to the base station according to the retransmission instruction.
  • the second data may be sent to the base station according to the new transmission instruction.
  • Solution 1 The base station has received the correct first data.
  • the UE may receive a new transmission command from the base station, and the UE may clear the HARQ buffer according to the new transmission instruction, and may also send the second data to the base station.
  • Option 2 The actual number of transmissions is greater than the maximum transmission and number of times.
  • the UE may receive a new transmission command from the base station, and the UE may clear the HARQ buffer according to the new transmission instruction, and may also send the second data to the base station.
  • the method may further include: saving the first data in the HARQ cache.
  • HARQ can be a combination of forward error correction (FEC) and automatic repeat Query (ARQ).
  • the keywords of HARQ can be storage, request retransmission, and combined demodulation.
  • the sender when the sender (UE) knows that the receiver (base station) fails to receive data, the sender can save the transmitted data, and at the same time, the receiver can request the sender to retransmit the data, where the sender saves
  • the first data can be prepared for subsequent retransmissions.
  • the first data may be stored in the HARQ cache.
  • feedback information may be generated, and then the transmission times are accumulated by a preset value, and the transmission opportunity is one-to-one correspondence with the transmission subframe, as long as the UE sends the first number.
  • the base station adds the preset value to the transmission opportunity, and the base station does not consider whether it actually receives the first data.
  • the number of transmissions in this embodiment is that the base station receives the first data and sends feedback information to the UE.
  • the number of transmissions indicates the number of times the UE actually transmits data to the base station, and avoids some retransmission subframes for some reasons (for example, insufficient data resources, insufficient control channel resources, insufficient scheduling opportunities, etc.) Otherwise, the UE cannot retransmit the retransmission subframe, fully utilizes the retransmission opportunity, and reduces packet loss, thereby improving network performance.
  • the embodiment of the present disclosure provides an uplink retransmission method, which can be applied to an uplink retransmission device, and assumes that the UE initially accesses the base station, and the base station system is Time Division Duplex (TDD), and the subframe ratio is 2, and the uplink is maximum.
  • TDD Time Division Duplex
  • the number of transmissions is 5, as shown in FIG. 3, the method may include:
  • Step 301 The UE sends the first data to the base station.
  • the first data may refer to the radio frame 1 subframe 2.
  • Step 302 The UE saves the first data in the HARQ cache.
  • the UE may save the first data in the HARQ buffer for use in the current transmission error retransmission.
  • Step 303 The base station determines whether the first data sent by the UE is received. If yes, step 304 is performed; otherwise, step 307 is performed.
  • the base station can determine whether the UE is received.
  • the first data sent is determined whether the first data transmission is normal.
  • Step 304 The base station adds 1 to the number of transmissions of the UE.
  • the base station may accumulate the number of transmissions of the transmission by one.
  • the number of transmissions can be used to indicate the number of times the first data is actually transmitted in the transmission.
  • Step 305 The base station sends feedback information to the UE.
  • the base station receives the first data to indicate that the transmission is normal, but does not represent the correct first data received by the base station. Therefore, the base station may send feedback information to the UE to inform the UE that the first data is received by itself.
  • Step 306 The UE determines, according to the feedback information, whether the base station receives the correct first data, and if yes, performs step 308; otherwise, performs step 307.
  • the UE may determine, according to the feedback information, whether the base station receives the correct first data.
  • This judging operation belongs to a technique known in the art, and this embodiment will not be described in detail.
  • Step 307 The base station determines whether the number of transmissions is greater than the maximum number of transmissions. If yes, step 308 is performed; otherwise, step 312 is performed.
  • the maximum number of transmissions may be five, that is, the base station may determine whether the number of transmissions is greater than 5.
  • Step 308 The base station sends a new transmission instruction to the UE.
  • the base station may Send a new transmission instruction to the UE.
  • Step 309 The UE clears the HARQ cache.
  • the UE may clear the previously saved HARQ buffer.
  • Step 310 The base station sets the number of transmissions to zero.
  • the base station may zero the number of transmissions, that is, clear the number of transmissions of the first data, and then use the number of transmissions to count the transmission of the second data.
  • Step 311 The UE sends the second data to the base station according to the new transmission instruction.
  • the new transmission instruction may be new data for instructing the UE to send the second data, that is, the first data, to the base station.
  • the second data is the radio frame 2 subframe 2; when the first data is the radio frame 2 subframe 2, the second data is the radio frame 3 subframe 2 When the first data is the radio frame 3 subframe 2, the second data is the radio frame 4 subframe 2; the rest can be deduced by analogy.
  • Step 312 The base station sends a retransmission instruction to the UE.
  • the base station may send a retransmission instruction to the UE, where the retransmission instruction is used to instruct the UE to resend the first data.
  • Step 313 The UE resends the first data to the base station according to the retransmission instruction.
  • feedback information may be generated, and then the transmission times are accumulated by a preset value, and the transmission opportunity is one-to-one correspondence with the transmission subframe, as long as the UE sends the first number.
  • the base station adds the preset value to the transmission opportunity, and the base station does not consider whether it actually receives the first data.
  • the number of transmissions in this embodiment is that the base station receives the first data and sends feedback information to the UE.
  • the number of transmissions indicates the number of times the UE actually transmits data to the base station, and avoids some retransmission subframes for some reasons (for example, insufficient data resources, insufficient control channel resources, insufficient scheduling opportunities, etc.) Otherwise, the UE cannot retransmit the retransmission subframe, fully utilizes the retransmission opportunity, and reduces packet loss, thereby improving network performance.
  • a base station 40 is provided in the embodiment of the present disclosure. As shown in FIG. 4, the base station 40 includes:
  • the receiving module 401 is configured to: receive the first data sent by the UE, and further be configured to: receive the acknowledgement information sent by the UE, where the acknowledgement information is used to indicate whether the first data sent by the receiving UE is correct;
  • the sending module 402 is configured to send feedback information to the UE according to the first data, where the feedback information is used to represent the content of the first data sent by the receiving UE, and is further configured to: send a transmission instruction to the UE according to the number of transmissions and the acknowledgement information, The transmission instruction is used to control the content sent by the UE;
  • the accumulating module 403 is configured to: accumulate the preset number of transmission times; and the number of transmissions is used to represent the number of times of receiving the first data sent by the UE.
  • the base station will be compared with the transmission subframe, as long as the UE sends the first data. Adding a preset value to the transmission opportunity, the base station does not consider whether the first data is actually received by the base station.
  • the number of transmissions in this embodiment is that the base station receives the first data, and after sending the feedback information to the UE, the transmission times are accumulated.
  • the number of transmissions indicates the number of times the UE actually transmits data to the base station, and avoids a certain retransmission subframe due to some reasons (for example, insufficient data resources, insufficient control channel resources, insufficient scheduling opportunities, etc.) It is not possible to retransmit a retransmission subframe, make full use of retransmission opportunities, and reduce packet loss, thereby improving network performance.
  • the sending module 402 is configured to: when the confirmation information indicates that the first data is received, and the number of transmissions is less than or equal to the maximum number of transmissions, send a retransmission instruction to the UE; and the confirmation information indicates that the correct first data is received. Or, when the number of transmissions is greater than the maximum number of transmissions, or when the correct first data is received and the number of transmissions is greater than the maximum number of transmissions, a new transmission instruction is sent to the UE.
  • the receiving module 401 is further configured to: receive the first data that is resent by the UE.
  • the receiving module 401 is further configured to: receive second data sent by the UE.
  • the base station 40 may further include a zeroing module 404 configured to: zero the number of transmissions.
  • the receiving module 401, the sending module 402, the accumulating module 403, and the zeroing module 404 can all be configured by a central processing unit (CPU), a microprocessor (Micro Processor Unit, MPU) located in the base station 40. ), digital signal processor (DSP), or Field Programmable Gate Array (FPGA) implementation.
  • CPU central processing unit
  • MPU Micro Processor Unit
  • DSP digital signal processor
  • FPGA Field Programmable Gate Array
  • a UE 50 is provided in the embodiment of the present disclosure. As shown in FIG. 6, the UE 50 includes:
  • the sending module 501 is configured to: send the first data to the base station; and further, send the acknowledgement information to the base station;
  • the receiving module 502 is configured to: receive feedback information sent by the base station, where the feedback information is used to indicate that the base station receives the content of the first data, and is further configured to: receive a transmission instruction sent by the base station, where the transmission instruction is used to control content sent to the base station;
  • the determining module 503 is configured to: according to the first data and the feedback information, determine the confirmation information, where the confirmation information is used to characterize whether the first data received by the base station is correct.
  • the base station will be compared with the transmission subframe, as long as the UE sends the first data. Adding a preset value to the transmission opportunity, the base station does not consider whether the first data is actually received by the base station.
  • the number of transmissions in this embodiment is that the base station receives the first data, and after sending the feedback information to the UE, the transmission times are accumulated.
  • the number of transmissions indicates the number of times the UE actually transmits data to the base station, and avoids a certain retransmission subframe due to some reasons (for example, insufficient data resources, insufficient control channel resources, insufficient scheduling opportunities, etc.) It is not possible to retransmit a retransmission subframe, make full use of retransmission opportunities, and reduce packet loss, thereby improving network performance.
  • the UE 50 may further include:
  • the saving module 504 is configured to: save the first data in the hybrid automatic repeat request HARQ buffer; or
  • the clearing module 505 is configured to: clear the HARQ cache according to the new transmission instruction; or,
  • the module 504 and the clear module 505 are saved.
  • the sending module 501 is further configured to: when the transmission instruction is a retransmission instruction, retransmit the first data to the base station according to the retransmission instruction; when the transmission instruction is a new transmission instruction; send the second to the base station according to the new transmission instruction. data.
  • the sending module 501, the receiving module 502, the determining module 503, the saving module 504, and the clearing module 505 can all be configured by a central processing unit (CPU) and a microprocessor (Micro Processor) located in the UE 50.
  • CPU central processing unit
  • MPU Micro Processor
  • DSP Digital Signal Processor
  • FPGA Field Programmable Gate Array
  • the base station 40 is configured to receive the first data sent by the UE 50, and send feedback information to the UE 50 according to the first data, where the feedback information is used to represent the content of the first data sent by the receiving UE 50;
  • the value, the number of transmissions is used to represent the number of times of receiving the first data sent by the UE 50; the acknowledgment information sent by the UE 50 is received, and the acknowledgment information is used to indicate whether the first data sent by the receiving UE 50 is correct; according to the number of transmissions and the confirmation information,
  • a transmission instruction is transmitted to the UE 50 for controlling the content transmitted by the UE 50.
  • the UE 50 is configured to: send the first data to the base station 40; receive the feedback information sent by the base station 40, the feedback information is used to characterize the content of the first data received by the base station 40; and determine the confirmation information and the confirmation information according to the first data and the feedback information. It is used to characterize whether the first data received by the base station 40 is correct; the transmission instruction sent by the base station 40 is used, and the transmission instruction is used to control the content sent by the base station 40.
  • the base station will be compared with the transmission subframe, as long as the UE sends the first data. Adding a preset value to the transmission opportunity, the base station does not consider whether the first data is actually received by the base station.
  • the number of transmissions in this embodiment is that the base station receives the first data, and after sending the feedback information to the UE, the transmission times are accumulated.
  • the number of transmissions indicates the number of times the UE actually transmits data to the base station, and avoids some retransmission subframes for some reasons (for example, insufficient data resources, control)
  • the channel resources are insufficient, the scheduling opportunities are insufficient, and so on, and the UE cannot retransmit the retransmission subframes, fully utilizes the retransmission opportunity, and reduces packet loss, thereby improving network performance.
  • Embodiments of the present disclosure also provide a computer readable storage medium storing computer executable instructions that, when executed, implement the uplink retransmission method described above.
  • embodiments of the present disclosure can be provided as a method, system, or computer program product.
  • embodiments of the present disclosure may take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware aspects.
  • embodiments of the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more flows of the flowchart, or a block or blocks of the block diagram, or at least one block of the flowchart and at least one block of the block diagram.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more flows of the flowchart, or a block or blocks of the block diagram, or at least one block of the flowchart and at least one block of the block diagram.
  • computer storage medium includes volatile and nonvolatile, implemented in any method or technology for storing information, such as computer readable instructions, data structures, program modules or other data. Sex, removable and non-removable media.
  • Computer storage media include, but are not limited to, Random Access Memory (RAM), Read-Only Memory (ROM), and Electrically Erasable Programmable Read-only Memory (EEPROM). Flash memory or other memory technology, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical disc storage, magnetic cassette, magnetic tape, disk storage or other magnetic storage device, or Any other medium used to store the desired information and that can be accessed by the computer.
  • communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and can include any information delivery media. .
  • An embodiment of the present disclosure provides an uplink retransmission method, a base station, a UE, and a system, which receive first data sent by a UE, and send feedback information to the UE according to the first data; accumulate a preset value for the number of transmissions; Confirmation information; and send to the UE according to the number of transmissions and the confirmation information Transfer instructions.
  • feedback information may be generated, and then the number of transmissions is accumulated by a preset value.
  • the base station will be compared with the transmission subframe, as long as the UE sends the first data. Adding a preset value to the transmission opportunity, the base station does not consider whether the first data is actually received by the base station.
  • the uplink retransmission method, the base station, the UE, and the number of transmissions in the system provided by the embodiment are that the base station receives the first data, and After the feedback information is sent to the UE, the number of transmissions is added to the preset value.
  • the number of transmissions indicates the number of times the UE actually transmits data to the base station, and some retransmission subframes are avoided for some reasons (for example, insufficient data resources, control channels) The resources are insufficient, the scheduling opportunities are insufficient, etc.), so that the UE cannot retransmit the retransmission subframes, fully utilize the retransmission opportunity, and reduce the packet loss, thereby improving network performance.

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Abstract

一种上行重传方法包括：接收UE发送的第一数据；根据所述第一数据，向所述UE发送反馈信息，所述反馈信息用于表征所述接收UE发送的第一数据的内容；将传输次数累加预设值，所述传输次数用于表征所述接收UE发送的第一数据的接收次数；接收所述UE发送的确认信息，所述确认信息用于表征所述接收UE发送的第一数据是否正确；根据所述传输次数和所述确认信息，向所述UE发送传输指令，所述传输指令用于控制所述UE发送的内容。

Description

一种上行重传方法、基站、UE和系统 技术领域
本公开涉及但不限于通讯技术领域，尤其是一种上行重传方法、基站、UE和系统。
背景技术
在长期演进(Long Term Evolution，LTE)通信系统中，时刻进行着用户设备(User Equipment，UE)向基站传输数据的进程，UE和基站通过交互完成数据的传输。如何在UE和基站之间准确、高效地传输数据成为人们研究的热点。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
LTE上行可以是同步混合自动重传请求(Hybrid Automatic Repeat reQuest，HARQ)系统，即上行每个进程传输机会和传输子帧一一对应，例如，如果用户的最大传输次数是5次，则重传最大传输4次，即新传之后的4个无线帧的第一个上行子帧是用户的重传机会，当新传之后4个无线帧的最后一个无线帧的第一个子帧后，UE会清空该次传输的HARQ缓存，无论上述4次重传的传输是否正确。
由于上行传输次数不仅仅受最大传输次数的限制，同时也受到传输子帧的限制，即传输机会和传输子帧一一对应，当上行数据新传确定后，根据最大传输次数，数据重传的传输子帧就确定了，如果某个重传子帧因为某些原因(例如：数据资源不够、控制信道资源不够、调度机会不够等等)，导致UE不能在重传子帧进行重传，那么相应的重传机会就会减少，进而可能导致数据包丢失，影响网络性能。
本文提供一种上行传输方法、基站、UE和系统，能够通过重传子帧实际重传次数来决定UE是否清空该次传输的HARQ缓存，避免了某个重传子 帧因某些原因(例如：数据资源不够、控制信道资源不够、调度机会不够等等)而导致UE不能在重传子帧进行重传，充分利用重传机会，减少数据包丢失，从而提升网络性能。
本公开实施例提供一种上行重传方法，包括：
接收用户设备UE发送的第一数据；
根据所述第一数据，向所述UE发送反馈信息，所述反馈信息用于表征所述接收UE发送的第一数据的内容；
将传输次数累加预设值；所述传输次数用于表征所述接收UE发送的第一数据的接收次数；
接收所述UE发送的确认信息，所述确认信息用于表征所述接收UE发送的第一数据是否正确；
根据所述传输次数和所述确认信息，向所述UE发送传输指令，所述传输指令用于控制所述UE发送的内容。
在一种示例性实施方式中，所述根据所述传输次数和所述确认信息，向所述UE发送传输指令包括：
所述确认信息表示接收到错误的所述第一数据，且所述传输次数小于或等于所述最大传输次数时，向所述UE发送重传指令；
所述确认信息表示接收到正确的所述第一数据、或所述传输次数大于所述最大传输次数、或接收到正确的所述第一数据且所述传输次数大于所述最大传输次数时，向所述UE发送新传指令。
在一种示例性实施方式中，在所述向所述UE发送重传指令之后，所述方法还包括：
接收所述UE重新发送的所述第一数据。
在一种示例性实施方式中，在所述向所述UE发送新传指令之后，所述方法还包括：
将所述传输次数置零；
接收所述UE发送的第二数据。
本公开实施例还提供一种上行重传方法，包括：
向基站发送第一数据；
接收所述基站发送的反馈信息，所述反馈信息用于表征所述基站接收到所述第一数据的内容；
根据所述第一数据和所述反馈信息，确定确认信息，所述确认信息用于表征所述基站接收到的所述第一数据是否正确；
向所述基站发送所述确认信息；
接收所述基站发送的传输指令，所述传输指令用于控制向所述基站发送的内容。
在一种示例性实施方式中，在所述接收所述基站发送的反馈信息之前，所述方法还包括：
将所述第一数据保存于混合自动重传请求HARQ缓存。
在一种示例性实施方式中，在所述接收所述基站发送的传输指令之后，所述方法还包括：
所述传输指令是重传指令时，根据所述重传指令，向所述基站重新发送所述第一数据；
所述传输指令是新传指令时，根据所述新传指令，清除所述HARQ缓存；根据所述新传指令，向所述基站发送第二数据。
本公开实施例还提供一种基站，包括：
接收模块，设置为：接收用户设备UE发送的第一数据；还设置为：接收所述UE发送的确认信息，所述确认信息用于表征所述接收UE发送的第一数据是否正确；
发送模块，设置为：根据所述第一数据，向所述UE发送反馈信息，所述反馈信息用于表征所述接收UE发送的第一数据的内容；还设置为：根据所述传输次数和所述确认信息，向所述UE发送传输指令，所述传输指令用于控制所述UE发送的内容；
累加模块，设置为：将传输次数累加预设值；所述传输次数用于表征所述接收所述UE发送的第一数据的接收次数。
在一种示例性实施方式中，所述发送模块是设置为：所述确认信息表示接收到错误的所述第一数据，且所述传输次数小于或等于所述最大传输次数时，向所述UE发送重传指令；所述确认信息表示接收到正确的所述第一数 据、或所述传输次数大于所述最大传输次数、或接收到正确的所述第一数据且所述传输次数大于所述最大传输次数时，向所述UE发送新传指令。
在一种示例性实施方式中，所述接收模块还设置为：接收所述UE重新发送的所述第一数据。
在一种示例性实施方式中，所述基站还包括：
置零模块，设置为：将所述传输次数置零；
所述接收模块还设置为：接收所述UE发送的第二数据。
本公开实施例还提供一种UE，包括：
发送模块，设置为：向基站发送第一数据；还设置为：向所述基站发送确认信息；
接收模块，设置为：接收所述基站发送的反馈信息，所述反馈信息用于表征所述基站接收到所述第一数据的内容；还设置为：接收所述基站发送的传输指令，所述传输指令用于控制向所述基站发送的内容；
确定模块，设置为：根据所述第一数据和所述反馈信息，确定所述确认信息，所述确认信息用于表征所述基站接收到的所述第一数据是否正确。
在一种示例性实施方式中，所述UE还包括：
保存模块，设置为：将所述第一数据保存于混合自动重传请求HARQ缓存；或，
清除模块，设置为：根据所述新传指令，清除所述HARQ缓存；或，
所述保存模块和所述清除模块。
在一种示例性实施方式中，所述发送模块还设置为：所述传输指令是重传指令时，根据所述重传指令，向所述基站发送所述第一数据；所述传输指令是新传指令时，根据所述新传指令，向所述基站发送第二数据。
本公开实施例还提供一种系统，包括：
基站；
UE；
其中，所述基站设置为：接收UE发送的第一数据；根据所述第一数据，向所述UE发送反馈信息，所述反馈信息用于表征所述接收UE发送的第一数据的内容；将传输次数累加预设值，所述传输次数用于表征所述接收UE 发送的第一数据的接收次数；接收所述UE发送的确认信息，所述确认信息用于表征所述接收UE发送的第一数据是否正确；根据所述传输次数和所述确认信息，向所述UE发送传输指令，所述传输指令用于控制所述UE发送的内容；
所述UE设置为：向基站发送第一数据；接收所述基站发送的反馈信息，所述反馈信息用于表征所述基站接收到所述第一数据的内容；根据所述第一数据和所述反馈信息，确定所述确认信息，所述确认信息用于表征所述基站接收到的所述第一数据是否正确；接收所述基站发送的传输指令，所述传输指令用于控制所述基站发送的内容。
本公开实施例还提供了一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被执行时实现上述上行重传方法。
本公开实施例提供了一种上行重传方法、基站、UE和系统，接收UE发送的第一数据；根据第一数据，向UE发送反馈信息；将传输次数累加预设值；接收UE发送的确认信息；以及根据传输次数和确认信息，向UE发送传输指令。这样一来，根据接收到的第一数据，可生成反馈信息，然后将传输次数累加预设值，相较于传输机会是与传输子帧一一对应，只要UE发送第一数据，基站便会将传输机会累加预设值，基站不会考虑自身是否真正接收到该第一数据，本实施例提供的上行重传方法、基站、UE和系统中的传输次数是基站接收到第一数据，且向UE发送反馈信息后，将传输次数累加预设值，传输次数表示的是UE向基站实际传输数据的次数，避免了某个重传子帧因某些原因(例如：数据资源不够、控制信道资源不够、调度机会不够等等)而导致UE不能在重传子帧进行重传，充分利用重传机会，减少数据包丢失，从而提升网络性能。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1为本公开实施例提供的一种上行重传方法流程图；
图2为本公开实施例提供的另一种上行重传方法流程图；
图3为本公开实施例提供的其他一种上行重传方法流程图；
图4为本公开实施例提供的一种基站结构示意图；
图5为本公开实施例提供的另一种基站结构示意图；
图6为本公开实施例提供的一种UE结构示意图；
图7为本公开实施例提供的另一种UE结构示意图；
图8为本公开实施例提供的一种系统结构示意图。
本公开的较佳实施方式
下面结合附图对本公开的实施方式进行描述。
本公开实施例提供一种上行重传方法，可应用于基站，如图1所示，该方法包括：
步骤101、接收UE发送的第一数据。
这里是指UE可传输第一数据给基站，基站收到第一数据后，可发送反馈信息给UE，反馈信息是用来表示基站接收到该第一数据的内容，当UE根据反馈信息确定出基站已正确接收到该第一数据时，则UE可以不重传该第一数据，否则UE可以重传该第一数据。
可以说明的是，该第一数据的传输可以是通过相应的数据包来进行的，同时，数据包的传输可以由最大传输次数限制，当某个数据包传输次数超过最大传输次数时，UE可以清空HARQ缓存，丢弃该数据包。
重传可以包括自适应重传和非自适应重传两种模式，自适应重传可以需要基站在重传子帧下发上行授权给UE，非自适应重传可以不需要下发上行授权，UE可在和新传相同的上行子帧，根据新传的授权传输重传数据，如表1所示，列出了UE进行自适应重传和非自适应重传的行为。其中，确认字符(Acknowledgement，ACK)表示基站接收的第一数据无误；否定字符(Negative Acknowledgement，NACK)表示基站接收的第一数据存在错误；None表示UE没有接收到授权指示；物理下行控制信道(Physical Downlink Control Channel，PDCCH)是一组物理资源粒子的集合，承载上下行控制信息，可包含传输格式、资源分配、上行调度许可、功率控制以及上行重传信 息等。
表1
Figure PCTCN2017096193-appb-000001
步骤102、根据第一数据，向UE发送反馈信息。
当基站接收到第一数据之后，可以向UE发送反馈信息，用来告知UE自身接收到第一数据内容的情况。
步骤103、将传输次数累加预设值。
可选地，本实施例中预设值取1。
当接收到第一数据之后，基站还可以将UE该次传输的传输次数累加1，说明真实消耗了一次传输机会。
步骤104、接收UE发送的确认信息。
这里，确认信息可以用来表征基站接收到UE发送的第一数据是否正确。
本实施例中的传输过程可以为一个闭环有反馈的过程，即基站通过接收到的确认信息来判断出自身之前所接收的第一数据是否正确。
步骤105、根据传输次数和确认信息，向UE发送传输指令。
这里，传输指令可以用于控制UE发送的内容，本实施例中传输指令可以包括重传指令和新传指令，其中，重传指令用于控制UE继续发送第一数据，新传指令用于控制UE发送第二数据，相较于第一数据，第二数据为新的数据。
可选地，确认信息表示接收到错误的第一数据，且传输次数小于或等于 最大传输次数时，可以向UE发送重传指令；可以接收UE重新发送的第一数据。
在实际传输中，任何方式的数据传输都可能存在数据传输错误的情况，本实施例也不例外，可选地，基站会将接收到第一数据的情况以反馈信息发送给UE，UE可通过该反馈信息判断出基站是否正确接收到该第一数据，并用确认信息来表示，同时可将该确认信息发送至基站，当该确认信息表示基站接收到错误的第一数据时，基站可以不立即向UE发送重传指令，因为第一数据的传输还受到最大传输次数的限制，基站可以在判断出传输次数小于或等于最大传输次数时，才向UE发送重传指令，用来请求UE重新发送第一数据。
确认信息表示接收到正确的第一数据、或传输次数大于最大传输次数、或接收到正确的所述第一数据且所述传输次数大于所述最大传输次数时，可以向UE发送新传指令；可以将传输次数置零；可以接收UE发送的第二数据。
这里可以分为两种情况：
情况一：确认信息表示接收到正确的第一数据。
当确认信息表示基站接收到正确的第一数据时，可以表明该第一数据已经成功传输，此时，无论传输次数是小于等于最大传输次数还是传输次数大于最大传输次数，UE可以不重传该第一数据。这时，基站可以向UE发送新传指令，该新传指令用于指示UE发送第二数据；此外，基站可以将之前为第一数据传输计数的传输次数清零，用该清零后的传输次数为接下来的第二数据的传输计数。之后，基站可以接收UE发送的第二数据。
可以说明的是，UE向基站发送数据可以是一个持续的过程，本实施例仅仅以第一数据和第二数据为例说明该持续过程。
情况二：传输次数大于最大传输次数。
当基站判断出第一数据的传输次数大于最大传输次数时，可以表明该第一数据的传输以及重传次数已经达到传输上限，即已经大于最大传输次数，换句话说，该第一数据的传输以及重传次数已经使用完所有传输机会，此时只能放弃该第一数据的传输。这时，基站可以向UE发送新传指令，该新传 指令用于指示UE发送第二数据；此外，基站可以将之前为第一数据传输计数的传输次数清零，用该清零后的传输次数为接下来的第二数据的传输计数。之后，基站可以接收UE发送的第二数据。
这样一来，根据接收到的第一数据，可生成反馈信息，然后将传输次数累加预设值，相较于传输机会是与传输子帧一一对应，只要UE发送第一数据，基站便会将传输机会累加预设值，基站不会考虑自身是否真正接收到该第一数据，本实施例中的传输次数是基站接收到第一数据，且向UE发送反馈信息后，将传输次数累加预设值，传输次数表示的是UE向基站实际传输数据的次数，避免了某个重传子帧因某些原因(例如：数据资源不够、控制信道资源不够、调度机会不够等等)而导致UE不能在重传子帧进行重传，充分利用重传机会，减少数据包丢失，从而提升网络性能。
本公开实施例提供的一种上行重传方法，可应用于UE，如图2所示，该方法包括：
步骤201、向基站发送第一数据。
这里可以是指UE传输第一数据给基站，故UE可以先向基站发送该第一数据。
步骤202、接收基站发送的反馈信息。
这里，反馈信息可以用于表征基站实际接收到第一数据的内容。可选地，基站会将接收到第一数据的情况以反馈信息发送给UE，UE可通过该反馈信息判断出基站是否正确接收到该第一数据，并将判断结果通过确认信息来表示，当该确认信息表示基站接收到错误的第一数据时，基站可以不立即向UE发送重传指令。
步骤203、根据第一数据和反馈信息，确定确认信息。
这里，确认信息可以用于表征基站接收到的第一数据是否正确。
步骤204、向基站发送确认信息。
由于UE接下来可以给基站发送的内容是由接收到基站的传输指令决定的，而传输指令又可以受到确认信息的影响，所以，当UE确定出确认信息之后，可以将确认信息发送给基站，使得确认信息作为基站传输指令的依据。
步骤205、接收基站发送的传输指令。
这里，传输指令可以用于控制UE将要向基站发送的内容。这里可以包括两种情况：
情况一：传输指令为重传指令。
可以接收基站的重传指令；根据重传指令，向基站重新发送第一数据。
这里，可以表明基站没有接收到正确的第一数据，且实际传输次数小于等于最大传输及次数，故UE可以根据重传指令向基站重新发送第一数据。
情况二：传输指令为新传指令。
可以接收基站发送的新传指令；根据新传指令，清除HARQ缓存；
可以根据新传指令，向基站发送第二数据。
这里，可以分为两种方案：
方案一：基站已经接收到正确的第一数据。
当基站已经接收到正确的第一数据时，UE便可以接收到基站的新传指令，UE根据该新传指令，可以清除HARQ缓存，同时还可以向基站发送第二数据。
方案二：实际传输次数大于最大传输及次数。
此时无论基站是否接收到正确的第一数据，UE都可以接收到基站的新传指令，UE根据该新传指令，可以清除HARQ缓存，同时还可以向基站发送第二数据。
在步骤202之前，所述方法还可以包括：将第一数据保存于HARQ缓存。
HARQ可以是一种将前向纠错编码(Forward Error Correction，FEC)和自动重传请求(Automatic Repeat Query，ARQ)相结合而形成的技术。HARQ的关键词可以是存储、请求重传、合并解调。本实施例中，发送方(UE)在得知接收方(基站)接收数据失败的情况下，发送方可保存发送的数据，同时，接收方可要求发送方重传数据，这里，发送方保存第一数据可以为之后的重传做准备。
可选地，第一数据可以保存于HARQ缓存当中。
这样一来，根据接收到的第一数据，可生成反馈信息，然后将传输次数累加预设值，相较于传输机会是与传输子帧一一对应，只要UE发送第一数 据，基站便会将传输机会累加预设值，基站不会考虑自身是否真正接收到该第一数据，本实施例中的传输次数是基站接收到第一数据，且向UE发送反馈信息后，将传输次数累加预设值，传输次数表示的是UE向基站实际传输数据的次数，避免了某个重传子帧因某些原因(例如：数据资源不够、控制信道资源不够、调度机会不够等等)而导致UE不能在重传子帧进行重传，充分利用重传机会，减少数据包丢失，从而提升网络性能。
本公开实施例提供一种上行重传方法，可应用于上行重传装置，假设UE初始接入基站，基站制式为时分双工(Time Division Duplex，TDD)，子帧配比为2，上行最大传输次数为5，如图3所示，该方法可包括：
步骤301、UE向基站发送第一数据。
本实施例中，初始情况下，第一数据可以是指无线帧1子帧2。
步骤302、UE将第一数据保存于HARQ缓存。
在进行步骤301的同时，UE可以将第一数据保存于HARQ缓存中，以便于本次传输错误重传时使用。
步骤303、基站判断是否接收到UE发送的第一数据，若是，则执行步骤304；否则执行步骤307。
在实际传输时，由于信道中可能会存在数据资源不够、控制信道资源不够以及调度机会不够等原因，这些原因可能会导致某次的数据传输不能正常进行，故在基站端可以判断是否接收到UE发送的第一数据，即判断该次第一数据传输是否正常进行。
步骤304、基站将UE的传输次数累加1。
当基站判断出该次第一数据传输是正常进行时，基站可以将该次传输的传输次数累加1。该传输次数可以用来表示该次传输中第一数据实际传输的次数。
步骤305、基站向UE发送反馈信息。
基站接收到第一数据表明传输正常，但并不能代表基站接收到的是正确的第一数据，因此，基站可以向UE发送反馈信息，用来告知UE自身接收第一数据的情况。
步骤306、根据反馈信息，UE判断基站是否接收到正确的第一数据，若是，则执行步骤308；否则执行步骤307。
UE可以根据反馈信息，判断出基站是否接收到正确的第一数据。该判断操作属于本领域已知的技术，本实施例就不再详述。
步骤307、基站判断传输次数是否大于最大传输次数，若是则执行步骤308；否则执行步骤312。
本实施例中，最大传输次数可以为5，即基站可以判断传输次数是否大于5。
步骤308、基站向UE发送新传指令。
当UE判断出基站已经接收到正确的第一数据、或基站判断出传输次数已经大于5、或UE判断出基站已经接收到正确的第一数据且基站判断出传输次数已经大于5时，基站可以向UE发送新传指令。
步骤309、UE清除HARQ缓存。
在进行步骤308的同时，UE可以清除之前保存的HARQ缓存。
步骤310、基站将传输次数置零。
在进行步骤308的同时，基站可以将传输次数置零，即将第一数据的传输次数清零，然后可以用该传输次数为第二数据的传输计数。
步骤311、根据新传指令，UE向基站发送第二数据。
该新传指令可以是用于指示UE向基站发送第二数据，即第一数据之后的新的数据。
示例地，当第一数据为无线帧1子帧2时，第二数据为无线帧2子帧2；当第一数据为无线帧2子帧2时，第二数据为无线帧3子帧2；当第一数据为无线帧3子帧2时，第二数据为无线帧4子帧2；其余的以此类推即可。
步骤312、基站向UE发送重传指令。
当基站接收到错误的第一数据且传输次数小于或等于5时，基站可以向UE发送重传指令，该重传指令用于指示UE重新发送第一数据。
步骤313、根据重传指令，UE向基站重新发送第一数据。
这样一来，根据接收到的第一数据，可生成反馈信息，然后将传输次数累加预设值，相较于传输机会是与传输子帧一一对应，只要UE发送第一数 据，基站便会将传输机会累加预设值，基站不会考虑自身是否真正接收到该第一数据，本实施例中的传输次数是基站接收到第一数据，且向UE发送反馈信息后，将传输次数累加预设值，传输次数表示的是UE向基站实际传输数据的次数，避免了某个重传子帧因某些原因(例如：数据资源不够、控制信道资源不够、调度机会不够等等)而导致UE不能在重传子帧进行重传，充分利用重传机会，减少数据包丢失，从而提升网络性能。
本公开实施例提供的一种基站40，如图4所示，所述基站40包括：
接收模块401，设置为：接收UE发送的第一数据；还设置为：接收UE发送的确认信息，确认信息用于表征接收UE发送的第一数据是否正确；
发送模块402，设置为：根据第一数据，向UE发送反馈信息，反馈信息用于表征接收UE发送的第一数据的内容；还设置为：根据传输次数和确认信息，向UE发送传输指令，传输指令用于控制UE发送的内容；
累加模块403，设置为：将传输次数累加预设值；传输次数用于表征接收UE发送的第一数据的接收次数。
这样一来，根据接收到的第一数据，可生成反馈信息，然后将传输次数累加预设值，相较于传输机会是与传输子帧一一对应，只要UE发送第一数据，基站便会将传输机会累加预设值，基站不会考虑自身是否真正接收到该第一数据，本实施例中的传输次数是基站接收到第一数据，且向UE发送反馈信息后，将传输次数累加预设值，传输次数表示的是UE向基站实际传输数据的次数，避免了某个重传子帧因某些原因(例如：数据资源不够、控制信道资源不够、调度机会不够等等)而导致UE不能在重传子帧进行重传，充分利用重传机会，减少数据包丢失，从而提升网络性能。
可选地，发送模块402是设置为：确认信息表示接收到错误的第一数据，且传输次数小于或等于最大传输次数时，向UE发送重传指令；确认信息表示接收到正确的第一数据、或传输次数大于最大传输次数、或接收到正确的所述第一数据且所述传输次数大于所述最大传输次数时，向UE发送新传指令。
可选地，接收模块401还设置为：接收UE重新发送的第一数据。
可选地，接收模块401还设置为：接收UE发送的第二数据。
如图5所示，所述基站40还可以包括置零模块404，设置为：将所述传输次数置零。
在实际应用中，所述接收模块401、发送模块402、累加模块403和置零模块404均可由位于基站40中的中央处理器(Central Processing Unit，CPU)、微处理器(Micro Processor Unit，MPU)、数字信号处理器(Digital Signal Processor，DSP)、或现场可编程门阵列(Field Programmable Gate Array，FPGA)等实现。
本公开实施例提供的一种UE 50，如图6所示，所述UE 50包括：
发送模块501，设置为：向基站发送第一数据；还设置为：向基站发送确认信息；
接收模块502，设置为：接收基站发送的反馈信息，反馈信息用于表征基站接收到第一数据的内容；还设置为：接收基站发送的传输指令，传输指令用于控制向基站发送的内容；
确定模块503，设置为：根据第一数据和反馈信息，确定确认信息，确认信息用于表征基站接收到的第一数据是否正确。
这样一来，根据接收到的第一数据，可生成反馈信息，然后将传输次数累加预设值，相较于传输机会是与传输子帧一一对应，只要UE发送第一数据，基站便会将传输机会累加预设值，基站不会考虑自身是否真正接收到该第一数据，本实施例中的传输次数是基站接收到第一数据，且向UE发送反馈信息后，将传输次数累加预设值，传输次数表示的是UE向基站实际传输数据的次数，避免了某个重传子帧因某些原因(例如：数据资源不够、控制信道资源不够、调度机会不够等等)而导致UE不能在重传子帧进行重传，充分利用重传机会，减少数据包丢失，从而提升网络性能。
如图7所示，UE 50还可包括：
保存模块504，设置为：将第一数据保存于混合自动重传请求HARQ缓存；或，
清除模块505，设置为：根据新传指令，清除HARQ缓存；或，
保存模块504和清除模块505。
可选地，发送模块501还设置为：传输指令是重传指令时，根据重传指令，向基站重新发送第一数据；传输指令是新传指令时；根据新传指令，向基站发送第二数据。
在实际应用中，所述发送模块501、接收模块502、确定模块503、保存模块504和清除模块505均可由位于UE 50中的中央处理器(Central Processing Unit，CPU)、微处理器(Micro Processor Unit，MPU)、数字信号处理器(Digital Signal Processor，DSP)、或现场可编程门阵列(Field Programmable Gate Array，FPGA)等实现。
本公开实施例提供的一种系统60，如图8所示，该系统60包括：
基站40；
UE 50。
其中，基站40设置为：接收UE 50发送的第一数据；根据第一数据，向UE 50发送反馈信息，反馈信息用于表征接收UE 50发送的第一数据的内容；将传输次数累加预设值，传输次数用于表征接收UE 50发送的第一数据的接收次数；接收UE 50发送的确认信息，确认信息用于表征接收UE 50发送的第一数据是否正确；根据传输次数和确认信息，向UE 50发送传输指令，传输指令用于控制UE 50发送的内容。
UE 50设置为：向基站40发送第一数据；接收基站40发送的反馈信息，反馈信息用于表征基站40接收到第一数据的内容；根据第一数据和反馈信息，确定确认信息，确认信息用于表征基站40接收到的第一数据是否正确；接收基站40发送的传输指令，传输指令用于控制基站40发送的内容。
这样一来，根据接收到的第一数据，可生成反馈信息，然后将传输次数累加预设值，相较于传输机会是与传输子帧一一对应，只要UE发送第一数据，基站便会将传输机会累加预设值，基站不会考虑自身是否真正接收到该第一数据，本实施例中的传输次数是基站接收到第一数据，且向UE发送反馈信息后，将传输次数累加预设值，传输次数表示的是UE向基站实际传输数据的次数，避免了某个重传子帧因某些原因(例如：数据资源不够、控制 信道资源不够、调度机会不够等等)而导致UE不能在重传子帧进行重传，充分利用重传机会，减少数据包丢失，从而提升网络性能。
本公开实施例还提供了一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被执行时实现上述上行重传方法。
本领域内的技术人员可以明白，本公开的实施例可提供为方法、系统、或计算机程序产品。因此，本公开实施例可采用硬件实施例、软件实施例、或结合软件和硬件方面的实施例的形式。而且，本公开实施例可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
可以理解，本公开实施例是参照根据本公开实施例的方法、设备(系统)、和计算机程序产品的流程图、或方框图、或流程图和方框图来描述的。可以理解，可由计算机程序指令实现流程图中的每一流程、或方框图中的每一方框、或流程图和方框图中的每一流程以及方框、以及流程图中流程的结合、或方框图中方框的结合、或流程图中流程和方框图中方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程、或方框图一个方框或多个方框、或流程图至少一个流程和方框图至少一个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程、或方框图一个方框或多个方框、或流程图至少一个流程和方框图至少一个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程、或方框图一个方框或多个方框、或流程图至少一个流程和方框图至少一个方框中指定的功能的步骤。
本领域普通技术人员可以理解，上文中所公开方法中的全部或某些步骤、系统、装置中的功能模块/单元可以被实施为软件、固件、硬件及其适当的组合。在硬件实施方式中，在以上描述中提及的功能模块/单元之间的划分不一定对应于物理组件的划分；例如，一个物理组件可以具有多个功能，或者一个功能或步骤可以由若干物理组件合作执行。某些组件或所有组件可以被实施为由处理器，如数字信号处理器或微处理器执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。这样的软件可以分布在计算机可读介质上，计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。如本领域普通技术人员公知的，术语计算机存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、程序模块或其他数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于随机存取存储器(RAM，Random Access Memory)、只读存储器(ROM，Read-Only Memory)、电可擦除只读存储器(EEPROM，Electrically Erasable Programmable Read-only Memory)、闪存或其他存储器技术、光盘只读存储器(CD-ROM，Compact Disc Read-Only Memory)、数字多功能盘(DVD)或其他光盘存储、磁盒、磁带、磁盘存储或其他磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其他的介质。此外，本领域普通技术人员公知的是，通信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其他传输机制之类的调制数据信号中的其他数据，并且可包括任何信息递送介质。
本领域的普通技术人员可以理解，可以对本公开的技术方案进行修改或者等同替换，而不脱离本公开技术方案的精神和范围，均应涵盖在本公开的权利要求范围当中。
工业实用性
本公开实施例提供了一种上行重传方法、基站、UE和系统，接收UE发送的第一数据；根据第一数据，向UE发送反馈信息；将传输次数累加预设值；接收UE发送的确认信息；以及根据传输次数和确认信息，向UE发送 传输指令。这样一来，根据接收到的第一数据，可生成反馈信息，然后将传输次数累加预设值，相较于传输机会是与传输子帧一一对应，只要UE发送第一数据，基站便会将传输机会累加预设值，基站不会考虑自身是否真正接收到该第一数据，本实施例提供的上行重传方法、基站、UE和系统中的传输次数是基站接收到第一数据，且向UE发送反馈信息后，将传输次数累加预设值，传输次数表示的是UE向基站实际传输数据的次数，避免了某个重传子帧因某些原因(例如：数据资源不够、控制信道资源不够、调度机会不够等等)而导致UE不能在重传子帧进行重传，充分利用重传机会，减少数据包丢失，从而提升网络性能。

Claims (15)

  1. 一种上行重传方法，所述方法包括：
    接收用户设备UE发送的第一数据；
    根据所述第一数据，向所述UE发送反馈信息，所述反馈信息用于表征所述接收UE发送的第一数据的内容；
    将传输次数累加预设值；所述传输次数用于表征所述接收UE发送的第一数据的接收次数；
    接收所述UE发送的确认信息，所述确认信息用于表征所述接收UE发送的第一数据是否正确；
    根据所述传输次数和所述确认信息，向所述UE发送传输指令，所述传输指令用于控制所述UE发送的内容。
  2. 根据权利要求1所述的方法，其中，所述根据所述传输次数和所述确认信息，向所述UE发送传输指令包括：
    所述确认信息表示接收到错误的所述第一数据，且所述传输次数小于或等于所述最大传输次数时，向所述UE发送重传指令；
    所述确认信息表示接收到正确的所述第一数据、或所述传输次数大于所述最大传输次数、或接收到正确的所述第一数据且所述传输次数大于所述最大传输次数时，向所述UE发送新传指令。
  3. 根据权利要求2所述的方法，在所述向所述UE发送重传指令之后，所述方法还包括：
    接收所述UE重新发送的所述第一数据。
  4. 根据权利要求2所述的方法，在所述向所述UE发送新传指令之后，所述方法还包括：
    将所述传输次数置零；
    接收所述UE发送的第二数据。
  5. 一种上行重传方法，所述方法包括：
    向基站发送第一数据；
    接收所述基站发送的反馈信息，所述反馈信息用于表征所述基站接收到所述第一数据的内容；
    根据所述第一数据和所述反馈信息，确定确认信息，所述确认信息用于表征所述基站接收到的所述第一数据是否正确；
    向所述基站发送所述确认信息；
    接收所述基站发送的传输指令，所述传输指令用于控制向所述基站发送的内容。
  6. 根据权利要求5所述的方法，在所述接收所述基站发送的反馈信息之前，所述方法还包括：
    将所述第一数据保存于混合自动重传请求HARQ缓存。
  7. 根据权利要求5所述的方法，在所述接收所述基站发送的传输指令之后，所述方法还包括：
    所述传输指令是重传指令时，根据所述重传指令，向所述基站重新发送所述第一数据；
    所述传输指令是新传指令时，根据所述新传指令，清除所述HARQ缓存；根据所述新传指令，向所述基站发送第二数据。
  8. 一种基站，所述基站包括：
    接收模块，设置为：接收用户设备UE发送的第一数据；还设置为：接收所述UE发送的确认信息，所述确认信息用于表征所述接收UE发送的第一数据是否正确；
    发送模块，设置为：根据所述第一数据，向所述UE发送反馈信息，所述反馈信息用于表征所述接收UE发送的第一数据的内容；还设置为：根据所述传输次数和所述确认信息，向所述UE发送传输指令，所述传输指令用于控制所述UE发送的内容；
    累加模块，设置为：将传输次数累加预设值；所述传输次数用于表征所述接收所述UE发送的第一数据的接收次数。
  9. 根据权利要求8所述的基站，其中，所述发送模块是设置为：所述确 认信息表示接收到错误的所述第一数据，且所述传输次数小于或等于所述最大传输次数时，向所述UE发送重传指令；所述确认信息表示接收到正确的所述第一数据、或所述传输次数大于所述最大传输次数、或接收到正确的所述第一数据且所述传输次数大于所述最大传输次数时，向所述UE发送新传指令。
  10. 根据权利要求8所述的基站，所述接收模块还设置为：接收所述UE重新发送的所述第一数据。
  11. 根据权利要求9所述的基站，所述基站还包括：
    置零模块，设置为：将所述传输次数置零；
    所述接收模块还设置为：接收所述UE发送的第二数据。
  12. 一种用户设备UE，所述UE包括：
    发送模块，设置为：向基站发送第一数据；还设置为：向所述基站发送确认信息；
    接收模块，设置为：接收所述基站发送的反馈信息，所述反馈信息用于表征所述基站接收到所述第一数据的内容；还设置为：接收所述基站发送的传输指令，所述传输指令用于控制向所述基站发送的内容；
    确定模块，设置为：根据所述第一数据和所述反馈信息，确定所述确认信息，所述确认信息用于表征所述基站接收到的所述第一数据是否正确。
  13. 根据权利要求12所述的UE，所述UE还包括：
    保存模块，设置为：将所述第一数据保存于混合自动重传请求HARQ缓存；或，
    清除模块，设置为：根据所述新传指令，清除所述HARQ缓存；或，
    所述保存模块和所述清除模块。
  14. 根据权利要求12所述的UE，所述发送模块还设置为：所述传输指令是重传指令时，根据所述重传指令，向所述基站发送所述第一数据；所述传输指令是新传指令时，根据所述新传指令，向所述基站发送第二数据。
  15. 一种系统，所述系统包括：
    基站；
    用户设备UE；
    其中，所述基站设置为：接收UE发送的第一数据；根据所述第一数据，向所述UE发送反馈信息，所述反馈信息用于表征所述接收UE发送的第一数据的内容；将传输次数累加预设值，所述传输次数用于表征所述接收UE发送的第一数据的接收次数；接收所述UE发送的确认信息，所述确认信息用于表征所述接收UE发送的第一数据是否正确；根据所述传输次数和所述确认信息，向所述UE发送传输指令，所述传输指令用于控制所述UE发送的内容；
    所述UE设置为：向基站发送第一数据；接收所述基站发送的反馈信息，所述反馈信息用于表征所述基站接收到所述第一数据的内容；根据所述第一数据和所述反馈信息，确定所述确认信息，所述确认信息用于表征所述基站接收到的所述第一数据是否正确；接收所述基站发送的传输指令，所述传输指令用于控制所述基站发送的内容。
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