WO2022126456A1 - Procédés et appareils de retransmission de données, dispositif de communication et support de stockage - Google Patents

Procédés et appareils de retransmission de données, dispositif de communication et support de stockage Download PDF

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Publication number
WO2022126456A1
WO2022126456A1 PCT/CN2020/136975 CN2020136975W WO2022126456A1 WO 2022126456 A1 WO2022126456 A1 WO 2022126456A1 CN 2020136975 W CN2020136975 W CN 2020136975W WO 2022126456 A1 WO2022126456 A1 WO 2022126456A1
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Prior art keywords
data
retransmission
data retransmission
terminating
response
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PCT/CN2020/136975
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English (en)
Chinese (zh)
Inventor
李媛媛
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北京小米移动软件有限公司
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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to PCT/CN2020/136975 priority Critical patent/WO2022126456A1/fr
Priority to CN202080004068.0A priority patent/CN112689966B/zh
Publication of WO2022126456A1 publication Critical patent/WO2022126456A1/fr

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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
    • 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

Definitions

  • the present application relates to the field of wireless communication technologies, and in particular, to a method, apparatus, communication device and storage medium for data retransmission.
  • Coverage is one of the key factors that operators consider when commercializing cellular networks, as it will directly affect the quality of service as well as capex and opex.
  • LTE Long Term Evolution
  • NR New Radio, new air interface
  • the protocol in order to achieve coverage enhancement, supports PUSCH (Physical uplink shared channel, physical uplink shared channel) to obtain a greater received signal-to-noise ratio through repeated transmission.
  • PUSCH Physical uplink shared channel, physical uplink shared channel
  • the method, device, communication device and storage medium for data retransmission proposed in the present application are used to solve the problem in the related art that a larger received signal-to-noise ratio is obtained through repeated transmission, so as to realize the manner of coverage enhancement.
  • it is easy to cause too many invalid retransmissions, thereby causing a waste of system resources.
  • the method for data retransmission proposed by an embodiment of the present application includes: determining whether to activate a mechanism for terminating data retransmission based on signal state information received in a continuous period.
  • the method for data retransmission proposed by an embodiment of the present application is applied to a data transmitting end, and includes: determining whether to activate a mechanism for terminating data retransmission based on the determined receiving state of the data receiving end.
  • the apparatus for data retransmission proposed in yet another embodiment of the present application is applied to a data receiving end, and includes: a first determination module, configured to determine whether to start a mechanism for terminating data retransmission based on signal state information received in a continuous period of time .
  • the apparatus for data retransmission proposed by another embodiment of the present application is applied to a data transmitting end, and includes: a second determining module configured to determine whether to start a mechanism for terminating data retransmission based on the determined receiving state of the data receiving end.
  • a communication device includes: a transceiver; a memory; and a processor, respectively connected to the transceiver and the memory, and configured to control the memory by executing computer-executable instructions on the memory.
  • the transceiver transmits and receives wireless signals, and can implement the method for data retransmission as described above.
  • the computer storage medium provided by an embodiment of the present application stores computer-executable instructions thereon; after the computer-executable instructions are executed by a processor, the aforementioned method for data retransmission can be implemented.
  • the data retransmission method, apparatus, communication device, and computer-readable storage medium provided by the embodiments of the present application determine whether to activate a mechanism for terminating data retransmission based on signal state information received in a continuous period. Therefore, the data retransmission is terminated in time through the real-time reception status of the signal by the data receiving end, thereby avoiding excessive invalid retransmission, reducing the waste of system resources, and improving the system throughput.
  • FIG. 1 is a schematic flowchart of a method for data retransmission provided by an embodiment of the present application
  • FIG. 2 is a schematic flowchart of another method for data retransmission provided by an embodiment of the present application
  • FIG. 3 is a schematic flowchart of yet another method for data retransmission provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of another method for data retransmission provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of another method for data retransmission provided by an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of another method for data retransmission provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of an apparatus for data retransmission provided by an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of another apparatus for data retransmission provided by an embodiment of the present application.
  • FIG. 9 is a block diagram of a user equipment provided by an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a base station according to an embodiment of the present application.
  • first, second, third, etc. may be used in the embodiments of the present application to describe various information, the information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
  • the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information.
  • the words "if” and “if” as used herein can be interpreted as "at the time of” or "when” or "in response to determining.”
  • the embodiments of the present application are directed to the manner in which a larger received signal-to-noise ratio is obtained through repeated transmission in the related art, so as to realize coverage enhancement.
  • a data retransmission method is proposed.
  • the method for data retransmission determines whether to start a mechanism for terminating data retransmission based on signal state information received within a continuous period of time. Therefore, the data retransmission is terminated in time through the real-time reception status of the signal by the data receiving end, thereby avoiding excessive invalid retransmission, reducing the waste of system resources, and improving the system throughput.
  • FIG. 1 is a schematic flowchart of a method for data retransmission provided by an embodiment of the present application, which is applied to a data receiving end.
  • the method for data retransmission includes the following steps:
  • Step 101 based on the signal state information received in a continuous period, determine whether to activate a mechanism for terminating data retransmission.
  • the data receiving end in this embodiment of the present application may be a base station or any UE (User Equipment, user equipment), and the data retransmission method in this embodiment of the present application may be applied to any base station or UE.
  • a UE may be a device that provides voice and/or data connectivity to a user.
  • the UE can communicate with one or more core networks via a RAN (Radio Access Network), and the terminal can be an IoT terminal, such as a sensor device, a mobile phone (or called a "cellular" phone) and an IoT-enabled terminal.
  • the computer of the terminal for example, may be a stationary, portable, pocket-sized, hand-held, computer-built-in or vehicle-mounted device.
  • the UE may also be a device of an unmanned aerial vehicle.
  • the UE may also be a vehicle-mounted device, for example, a trip computer with a wireless communication function, or a wireless terminal connected to an external trip computer.
  • the UE may also be a roadside device, for example, a streetlight, a signal light, or other roadside device having a wireless communication function.
  • the signal status information may include at least one of the following information: whether the signal is received correctly and the average received power value of the signal.
  • the data receiving end may determine whether a mechanism for terminating data retransmission can be started based on the signal state information received in a continuous period.
  • the data receiving end may determine whether the current data retransmission is valid according to whether the signal is received correctly. That is, in a possible implementation manner of the embodiment of the present application, the foregoing step 101 may include:
  • the data receiving end can determine to start a mechanism for terminating data retransmission in response to not correctly receiving the signal within a continuous period of time;
  • the data receiving end in response to the data receiving end not receiving the signal correctly within a continuous period of time, it can be determined that the data receiving end has not correctly received the signal for a long time, so that the data between the data receiving end and the data transmitting end can be determined.
  • the retransmission is in an invalid state, and then a mechanism for terminating data retransmission can be started, so as to terminate the data retransmission between the data sender and the data receiver, and avoid excessive invalid retransmission.
  • the data receiving end can determine that the data retransmission between the data receiving end and the data transmitting end is in a valid state in response to correctly receiving the signal in a continuous period, so that the mechanism for terminating data retransmission can not be activated to ensure the data retransmission.
  • the coverage between the receiving end and the data sending end is enhanced to improve communication reliability.
  • the data receiving end may determine whether the signal is correctly received through a CRC (Cyclic Redundancy Check, cyclic redundancy check). That is, before encoding the signal, the data transmitting end generates the CRC code corresponding to the signal. Therefore, after receiving the signal, the data receiving end can perform CRC check on the received signal, and in response to the successful CRC check, determine that the currently received signal is a correctly received signal; otherwise, determine the currently received signal Not a correctly received signal.
  • CRC Cyclic Redundancy Check, cyclic redundancy check
  • the data receiving end may also determine whether the current data retransmission is valid according to whether the signal is correctly received and the average received power value of the signal, so as to further improve the reliability of data retransmission termination. That is, in a possible implementation manner of the embodiment of the present application, the foregoing step 101 may include:
  • a mechanism for terminating data retransmission is determined to be initiated in response to the signal not being correctly received for a continuous period and the average received power value of the signal being less than the first threshold.
  • the mechanism for terminating data retransmission may not be activated to ensure enhanced coverage between the data receiving end and the data sending end and improve communication reliability.
  • the duration of the continuous period and the specific value of the first threshold may be determined according to the actual business scenario, which is not limited in this embodiment of the present application.
  • the method for data retransmission determines whether to start a mechanism for terminating data retransmission based on signal state information received within a continuous period of time. Therefore, the data retransmission is terminated in time through the real-time reception status of the signal by the data receiving end, thereby avoiding excessive invalid retransmission, reducing the waste of system resources, and improving the system throughput.
  • the data receiving end when the data receiving end is a base station and a UE, in response to determining that a mechanism for terminating data retransmission is started, different methods may be used to terminate data retransmission respectively.
  • the following specifically describes the manner of terminating data retransmission when the data receiving terminal is a base station or a UE.
  • FIG. 2 is a schematic flowchart of another method for data retransmission provided by an embodiment of the present application, which is applied to a data receiving end, and the data receiving end is a base station.
  • the method for data retransmission includes the following steps:
  • Step 201 based on the signal state information received in a continuous period, determine whether to activate a mechanism for terminating data retransmission.
  • step 201 may be implemented in any of the embodiments of the present application, which is not limited in the embodiments of the present application, and will not be described again.
  • Step 202 In response to the current opportunity to terminate data retransmission, send a first DCI (Downlink Control Information, downlink control information) to the UE, where the first DCI is used to instruct the UE to terminate data retransmission.
  • a first DCI Downlink Control Information, downlink control information
  • the timing for terminating the data retransmission may be that the base station determines to reschedule the UE to which the signal is currently sent in the current process, so that the base station may send the first DCI to the UE to indicate the UE through the first DCI Terminate data retransmission, and make the UE send new data according to the first DCI.
  • the base station in response to the first DCI indicating that the scheduling of the UE by the base station is still the original TBS (Transport Block Size, transport block size) scheduling, the base station can determine, according to the current buffer remaining capacity, when receiving data sent by the UE. , whether to clear the stored data. As an example, in response to the current cache remaining capacity being greater than the size of the received data, the base station may not clear the stored data, and merge the newly received data with the stored data; in response to the current cache remaining capacity When it is less than or equal to the received data size, the base station can clear the stored data and process the newly received data according to the new transmission model.
  • TBS Transport Block Size, transport block size
  • the base station may also reschedule new transmission resources for the UE. That is, in a possible implementation manner of the embodiment of the present application, the above data retransmission method may further include:
  • a second DCI is sent to the UE, where the second DCI includes transmission channel parameters and/or modulation and coding policy levels.
  • the base station may also send a second DCI to the UE, so as to instruct the UE to terminate the data retransmission through the second DCI, and may
  • the DCI reschedules information such as transmission channel parameters, modulation and coding strategy levels, retransmission resources, and retransmission times for the UE.
  • the base station when it reschedules resources for the UE, it can partially or fully modify the relevant parameters of the last data retransmission, that is, the scheduling transmission channel parameters, modulation and coding strategy levels, retransmission resources, and retransmission parameters included in the second DCI.
  • the information such as the number of transmissions can be new or the same as the parameters of the last data retransmission.
  • the base station may also determine the timing of terminating data retransmission based on the real-time reception status of the redundancy version or the number of data retransmissions. That is, in a possible implementation manner of the embodiment of the present application, before the foregoing step 202, it may further include:
  • the data receiving end in response to starting the mechanism for terminating data retransmission, the data receiving end (including the base station and the terminal) cannot immediately terminate the data retransmission to ensure the stability of data transmission between the data receiving end and the data transmitting end. Therefore, in response to initiating the mechanism for terminating data retransmission, the timing for terminating data retransmission can be preset.
  • the first specified redundancy version may be preset, and in response to starting the mechanism for terminating data retransmission, and the first specified redundancy version has been received, the base station may determine the current opportunity to terminate data retransmission , and can send the first DCI or signaling for terminating data retransmission to the UE to perform the process of terminating data retransmission. For example, if the first specified redundancy version is a redundancy version with a redundancy version number of 0, after starting the mechanism for terminating data retransmission, in response to the redundancy version with a redundancy version number of 0 being received, the base station may Determines the current opportunity to terminate data retransmission.
  • the redundancy versions may be sent in groups, so a second specified redundancy version group may be preset, and in response to initiating a mechanism for terminating data retransmission, and the second specified redundancy version group has been received
  • the base station may determine that it is the time to terminate data retransmission, and may send the first DCI or a signaling for terminating data retransmission to the UE, so as to perform the process of terminating data retransmission.
  • the base station can Determines the current opportunity to terminate data retransmission.
  • a third specified value of the number of times of data retransmission may be preset, so that in response to starting the mechanism for terminating data retransmission, and the number of times of data retransmission reaches the third specified value, the UE may determine that it is currently terminating data retransmission. transmission time.
  • the third specified value may be 4, 8, 16, etc., which is not limited in this embodiment of the present application.
  • the specific value of the third specified value may be specified by the protocol, or the UE may be notified when the data retransmission resource is configured.
  • a mechanism for terminating data retransmission is determined in response to the signal state information received in a continuous period, and in response to the current opportunity to terminate data retransmission, the base station sends a message to the UE.
  • the first DCI where the first DCI is used to instruct the UE to terminate data retransmission. Therefore, when the base station starts the mechanism for terminating data retransmission, it can timely terminate the data retransmission by sending the first DCI to the UE at an appropriate termination timing, thereby not only avoiding too many invalid retransmissions, but also reducing the system cost. Waste of resources, improve system throughput, and improve the stability of data transmission.
  • the following specifically describes the manner of terminating data retransmission when the data receiving terminal is a UE.
  • FIG. 3 is a schematic flowchart of still another data retransmission method provided by an embodiment of the present application, which is applied to a data receiving end, and the data receiving end is a UE.
  • the method for data retransmission includes the following steps:
  • Step 301 based on the signal state information received in a continuous period, determine whether to activate a mechanism for terminating data retransmission.
  • step 301 may be implemented in any one of the embodiments of the present application, which is not limited in the embodiments of the present application, and will not be described again.
  • Step 302 in response to the current opportunity to terminate data retransmission, send a request for terminating data retransmission to the base station.
  • the data receiving end (including the base station and the terminal) cannot immediately terminate the data retransmission, so as to ensure the stability of data transmission between the data receiving end and the data transmitting end . Therefore, after starting the mechanism for terminating data retransmission, the timing for terminating data retransmission can be preset, so that in response to the current timing for terminating data retransmission, the UE can send a request for terminating data retransmission to the base station, so that the base station can terminate the data retransmission. For data retransmission with the UE, the retransmission data is no longer sent to the UE.
  • the UE may also request the base station to reschedule new transmission resources for it. That is, in a possible implementation manner of the embodiment of the present application, the above data retransmission method may further include:
  • a service scheduling request is sent to the base station.
  • the UE may request the base station to reschedule new transmission resources for it, so as to continue to communicate with the base station after terminating data retransmission, so the UE may request the base station to communicate with the base station.
  • Send a service scheduling request so that the base station can send a second DCI to the UE to instruct the UE to terminate data retransmission through the second DCI, and can reschedule the transmission channel parameters, modulation and coding policy level, retransmission in the second DCI for the UE.
  • information such as transmission resources and retransmission times.
  • the base station when it reschedules resources for the UE, it can partially or fully modify the relevant parameters of the last data retransmission, that is, the scheduling transmission channel parameters, modulation and coding strategy levels, retransmission resources, and retransmission parameters included in the second DCI.
  • the information such as the number of transmissions can be new or the same as the parameters of the last data retransmission.
  • the UE may also determine whether the stored data needs to be cleared according to the current remaining buffer capacity to facilitate subsequent data transmission. That is, in a possible implementation manner of the embodiment of the present application, the above data retransmission method may further include:
  • the UE may not clear the stored data, and merge the newly received data with the stored data; in response to the current cache remaining capacity When it is less than or equal to the received data size, the UE can clear the stored data and process the newly received data according to the new transmission model.
  • the UE may also determine the timing of terminating data retransmission based on the real-time reception status of the redundancy version or the number of data retransmissions. That is, in a possible implementation manner of the embodiment of the present application, before the above step 302, it may further include:
  • the first specified redundancy version may be preset, and in response to starting the mechanism for terminating data retransmission, and the first specified redundancy version has been received, the UE may determine the current opportunity to terminate data retransmission , and can send a request for terminating data retransmission or a service scheduling request to the base station to perform the process of terminating data retransmission. For example, if the first specified redundancy version is a redundancy version with a redundancy version number of 0, after starting the mechanism for terminating data retransmission, in response to the redundancy version with a redundancy version number of 0 being received, the UE may Determines the current opportunity to terminate data retransmission.
  • the redundancy versions may be sent in groups, so a second specified redundancy version group may be preset, and in response to initiating a mechanism for terminating data retransmission, and the second specified redundancy version group has been received
  • the UE may determine that it is the time to terminate data retransmission, and may send a request for terminating data retransmission or a service scheduling request to the base station to perform the process of terminating data retransmission. For example, if the second specified redundancy version is that the redundancy version group is "0 2 1 3", after starting the mechanism for terminating data retransmission, in response to the redundancy version group "02 1 3" being received, the UE may Determines the current opportunity to terminate data retransmission.
  • a third specified value of the number of times of data retransmission may be preset, so that in response to starting the mechanism for terminating data retransmission, and the number of times of data retransmission reaches the third specified value, the UE may determine that it is currently terminating data retransmission. transmission time.
  • the third specified value may be 4, 8, 16, etc., which is not limited in this embodiment of the present application.
  • the specific value of the third specified value may be specified by the protocol, or the UE may be notified when the data retransmission resource is configured.
  • a mechanism for terminating data retransmission is determined in response to the signal state information received in a continuous period, and in response to the current opportunity to terminate data retransmission, the UE sends a message to the base station.
  • a request for terminating data retransmission or a service scheduling request to terminate data retransmission is determined in response to the signal state information received in a continuous period, and in response to the current opportunity to terminate data retransmission, the UE sends a message to the base station.
  • the UE when the UE starts the mechanism for terminating data retransmission, it can terminate the data retransmission in time by sending a request for terminating data retransmission or a service scheduling request to the base station at an appropriate termination timing, thereby not only avoiding excessive data retransmission Invalid retransmission reduces waste of system resources, improves system throughput, and improves the stability of data transmission.
  • FIG. 4 is a schematic flowchart of another method for data retransmission provided by an embodiment of the present application, which is applied to a data sending end.
  • the method for data retransmission includes the following steps:
  • Step 401 based on the determined receiving state of the data receiving end, determine whether to activate a mechanism for terminating data retransmission.
  • the data transmitting end in this embodiment of the present application may be a base station or any UE (User Equipment, user equipment), and the data retransmission method in this embodiment of the present application may be applied to any base station or UE.
  • a UE may be a device that provides voice and/or data connectivity to a user.
  • the UE can communicate with one or more core networks via a RAN (Radio Access Network), and the terminal can be an IoT terminal, such as a sensor device, a mobile phone (or called a "cellular" phone) and an IoT-enabled terminal.
  • the computer of the terminal for example, may be a stationary, portable, pocket-sized, hand-held, computer-built-in or vehicle-mounted device.
  • the UE may also be a device of an unmanned aerial vehicle.
  • the UE may also be a vehicle-mounted device, for example, a trip computer with a wireless communication function, or a wireless terminal connected to an external trip computer.
  • the UE may also be a roadside device, for example, a streetlight, a signal light, or other roadside device having a wireless communication function.
  • the data receiving end may determine whether a mechanism for terminating data retransmission currently needs to be started according to its real-time receiving state of the received signal, and feed back the receiving state of the data receiving end to the data transmitting end, so that the data The sender can determine whether a mechanism for terminating data retransmission needs to be started according to the receiving state of the data receiver.
  • the data receiving end may send its own receiving state of the retransmitted data to the data transmitting end, so that the data transmitting end responds to obtaining the receiving state of the data receiving end, Determines the mechanism that initiates retransmission of terminated data.
  • the data transmitting end (including the base station and the terminal) cannot immediately terminate the data retransmission to ensure the stability of data transmission between the data receiving end and the data transmitting end. Therefore, in response to initiating the mechanism for terminating data retransmission, the timing for terminating data retransmission can be preset. That is, in a possible implementation manner of the embodiment of the present application, after the above step 401, it may further include:
  • the retransmission of the data is terminated.
  • the specified rule may include at least one of the following rules: the first specified redundancy version has been transmitted, the second specified redundancy version group has been transmitted, or the number of data retransmissions reaches a third specified value.
  • the first specified redundancy version may be preset, and in response to starting the mechanism for terminating data retransmission, and the first specified redundancy version has been transmitted, the data sender may determine that the current data retransmission is terminated timing and terminate data retransmission. For example, if the first specified redundancy version is the redundancy version whose redundancy version number is 0, after the mechanism for terminating data retransmission is started, in response to the redundancy version whose redundancy version number is 0 has been transmitted, the data is sent. The terminal can determine that it is the time to terminate data retransmission.
  • the redundancy versions may be sent in groups, so a second specified redundancy version group may be preset, and in response to initiating a mechanism for terminating data retransmission, and the second specified redundancy version group has been transmitted
  • the data sender may determine that it is the time to terminate the data retransmission, and terminate the data retransmission. For example, if the second specified redundancy version is that the redundancy version group is "0 2 1 3", after the mechanism for terminating data retransmission is started, in response to the redundancy version group "0 2 1 3" having been transmitted, the data The sender may determine that it is currently the time to terminate data retransmission.
  • a third specified value of the number of times of data retransmission may be preset, so that in response to starting the mechanism for terminating data retransmission, and the number of times of data retransmission reaches the third specified value, the data sender may determine that it is currently terminated The timing of data retransmission, and the retransmission of data is terminated.
  • the third specified value may be 4, 8, 16, etc., which is not limited in this embodiment of the present application.
  • the specific value of the third specified value may be specified by the protocol, or the UE may be notified when the data retransmission resource is configured.
  • the data sending end can also establish a new schedule with the data receiving end. That is, in a possible implementation manner of the embodiment of the present application, after the above step 401, it may further include:
  • the data sender may re-execute a new scheduling instruction to the data receiver at the specified position according to the location specified by the new scheduling instruction
  • the corresponding data is retransmitted to realize continuous service scheduling between the data receiving end and the data sending end.
  • the data transmitting end determines whether to start a mechanism for terminating data retransmission based on the determined receiving state of the data receiving end. Therefore, the data retransmission is terminated in time through the real-time reception status of the signal by the data receiving end, thereby avoiding excessive invalid retransmission, reducing the waste of system resources, and improving the system throughput.
  • FIG. 5 is a schematic flowchart of another method for data retransmission provided by an embodiment of the present application, which is applied to a data sending end, and the data sending end is a UE.
  • the method for data retransmission includes the following steps:
  • Step 501 in response to determining that the base station terminates receiving uplink data, determine to initiate a mechanism for terminating data retransmission.
  • the base station in response to the base station not being a data receiving end and the UE being a data transmitting end, the base station may stop receiving uplink data when determining that a mechanism for terminating data retransmission can be started, so that in response to the base station terminating receiving uplink data, The UE may determine to initiate a mechanism for terminating data retransmission.
  • the base station when the base station determines that the mechanism for terminating data retransmission does not need to be activated, it can continue to receive uplink data, so that in response to the base station receiving uplink data, the UE can determine not to activate the mechanism for terminating data retransmission.
  • the UE can also determine the timing of terminating data retransmission according to the instruction of the base station. That is, in a possible implementation manner of the embodiment of the present application, after the above step 501, it may further include:
  • the retransmission of the data is terminated.
  • the timing for terminating the data retransmission may be that the base station determines to reschedule the UE to which the signal is currently sent in the current process, so that the base station may send the first DCI to the UE to indicate the UE through the first DCI Terminate data retransmission, and make the UE send new data according to the first DCI. Therefore, in response to acquiring the first DCI sent by the base station, the UE may determine that it is the current opportunity to terminate retransmission, and terminate the retransmission of data at the opportunity indicated in the first DCI to terminate retransmission.
  • the base station may also reschedule new transmission resources for the UE. That is, in a possible implementation manner of the embodiment of the present application, the above data retransmission method may further include:
  • the base station In response to obtaining the second DCI sent by the base station, determine the opportunity to terminate the retransmission, wherein the second DCI includes transmission channel parameters and/or modulation and coding strategy levels;
  • the retransmission of the data is terminated.
  • the base station may also send a second DCI to the UE, so as to instruct the UE to terminate the data retransmission through the second DCI, and may
  • the DCI reschedules information such as transmission channel parameters, modulation and coding strategy levels, retransmission resources, and retransmission times for the UE. Therefore, in response to acquiring the second DCI sent by the base station, the UE may determine that it is the current opportunity to terminate the retransmission, and terminate the data retransmission at the opportunity to terminate the retransmission.
  • timing for terminating the retransmission may be carried in the second DCI, or may be determined according to the specified rules in the above embodiment after the UE obtains the second DCI, and this embodiment of the present application does not do this. limited.
  • the base station when it reschedules resources for the UE, it can partially or fully modify the relevant parameters of the last data retransmission, that is, the scheduling transmission channel parameters, modulation and coding strategy levels, retransmission resources, and retransmission parameters included in the second DCI.
  • the information such as the number of transmissions can be new or the same as the parameters of the last data retransmission.
  • the UE determines that the base station terminates receiving uplink data, determines to start a mechanism for terminating data retransmission, and in response to acquiring the first DCI or the second DCI sent by the base station, determines that the current The timing of terminating data retransmission, and then terminating data retransmission. Therefore, when the UE starts the mechanism for terminating data retransmission, it can terminate the data retransmission in time at an appropriate termination timing, thereby not only avoiding too many invalid retransmissions, but also reducing the waste of system resources and improving the system throughput. And improve the stability of data transmission.
  • the following specifically describes the manner of terminating data retransmission when the data transmitting terminal is a base station.
  • FIG. 6 is a schematic flowchart of another method for data retransmission provided by an embodiment of the present application, which is applied to a data sending end, and the data sending end is a base station.
  • the method for data retransmission includes the following steps:
  • Step 601 in response to acquiring the data receiving state feedback information reported by the UE, determine to start a mechanism for terminating data retransmission.
  • the data receiving state feedback information may include whether the signal is correctly received and/or the average received power value of the signal.
  • the UE in response to the data transmitting end being the base station and the data receiving end being the UE, the UE may determine to start the operation in response to the fact that the signal is not correctly received in a continuous period and/or the average received power value of the signal is less than the first threshold.
  • Mechanism to terminate data retransmission in response to the data transmitting end being the base station and the data receiving end being the UE, the UE may determine to start the operation in response to the fact that the signal is not correctly received in a continuous period and/or the average received power value of the signal is less than the first threshold.
  • the UE may report data reception status feedback information to the base station, that is, the UE may set the UE to incorrectly receive signals and/or the average received power value of the signals within a continuous period of time to be less than The first threshold is reported to the base station, so that the base station terminates data retransmission.
  • the base station in response to acquiring the data receiving state feedback information reported by the UE, the base station can determine to start a mechanism for terminating data retransmission, and can terminate data retransmission at the timing of terminating data retransmission.
  • the base station may determine that the UE does not currently start the mechanism for terminating data retransmission, so that the base station may determine not to start the mechanism for terminating data retransmission.
  • the base station determines to start a mechanism for terminating data retransmission in response to acquiring the data receiving state feedback information reported by the UE, and then terminates the data retransmission.
  • the base station starts a mechanism for terminating data retransmission by receiving the state feedback information fed back by the UE, thereby not only avoiding too many invalid retransmissions, reducing waste of system resources, improving system throughput, and improving data Transmission stability.
  • a method for data retransmission provided by an embodiment of the present application is applied to a data transmitting end, and the data transmitting end is a base station, including:
  • the UE may report the data reception status feedback information to the base station after determining not to activate the mechanism for terminating data retransmission, that is, the UE may correctly receive the signal and/or the average received power value of the signal in a continuous period of time by the UE. If it is greater than or equal to the first threshold, it is reported to the base station, so that the base station can determine that the UE does not currently start the mechanism for terminating data retransmission, so that the base station can determine not to start the mechanism for terminating data retransmission.
  • the UE may not report the data reception status feedback information to the base station after determining that the mechanism for terminating data retransmission is activated, so that in response to not acquiring the data reception status feedback information reported by the UE, the base station may determine that the UE has currently activated the termination data.
  • Retransmission mechanism so that the base station can determine to start a mechanism for terminating data retransmission, and can terminate data retransmission at the timing of terminating data retransmission.
  • the present application also proposes an apparatus for data retransmission.
  • FIG. 7 is a schematic structural diagram of an apparatus for data retransmission provided by an embodiment of the present application, which is applied to a data receiving end.
  • the apparatus 70 for data retransmission includes:
  • the first determining module 71 is configured to determine whether to start a mechanism for terminating data retransmission based on the signal state information received within a continuous period.
  • the apparatus for data retransmission provided in this embodiment of the present application may be configured in any communication device to execute the foregoing method for data retransmission.
  • the apparatus for data retransmission determines whether to start a mechanism for terminating data retransmission based on signal state information received in a continuous period. Therefore, the data retransmission is terminated in time through the real-time reception status of the signal by the data receiving end, thereby avoiding excessive invalid retransmission, reducing the waste of system resources, and improving the system throughput.
  • the above number status information includes at least one of the following information: whether the signal is received correctly and an average received power value of the signal.
  • the above-mentioned first determining module 71 includes:
  • a first determining unit configured to determine to initiate a mechanism for terminating data retransmission in response to not correctly receiving a signal within a continuous period of time
  • a second determining unit configured to determine not to start a mechanism for terminating data retransmission in response to correctly receiving the signal within a continuous period of time
  • the third determination unit is configured to, in response to the signal not being correctly received within a continuous period of time and the average received power value of the signal being less than the first threshold, determine to initiate a mechanism for terminating data retransmission.
  • the above-mentioned data receiving end is a base station
  • the above-mentioned data retransmission device 70 further includes:
  • the first sending module is configured to send first downlink control information DCI to the user equipment UE in response to the current opportunity to terminate data retransmission, wherein the first DCI is used to instruct the UE to terminate data retransmission.
  • the above-mentioned data receiving end is a base station
  • the above-mentioned data retransmission device 70 further includes:
  • the second sending module is configured to send a second DCI to the UE in response to the current opportunity to terminate data retransmission, where the second DCI includes transmission channel parameters and/or modulation and coding policy levels.
  • the above-mentioned data receiving end is a UE
  • the above-mentioned data retransmission device 70 further includes:
  • the third sending module is configured to send a request for terminating data retransmission to the base station in response to the current opportunity to terminate data retransmission.
  • the above-mentioned data receiving end is a UE
  • the above-mentioned data retransmission device 70 further includes:
  • the fourth sending module is configured to send a service scheduling request to the base station in response to the current opportunity to terminate data retransmission.
  • the apparatus 70 for data retransmission further includes:
  • the third determining module is configured to determine whether to clear the stored data according to the current remaining capacity of the cache.
  • the apparatus 70 for data retransmission further includes:
  • a fourth determining module configured to determine that the current opportunity to terminate data retransmission is in response to the first specified redundancy version having been received
  • a fifth determining module configured to determine that the current opportunity to terminate data retransmission is in response to the second specified redundancy version group having been received
  • the sixth determining module is configured to, in response to the number of times of data retransmission reaching a third specified value, determine that it is currently an opportunity to terminate data retransmission.
  • the apparatus for data retransmission determines to start a mechanism for terminating data retransmission in response to the signal state information received in a continuous period, and in response to the current opportunity to terminate data retransmission, the base station sends a message to the UE.
  • the first DCI where the first DCI is used to instruct the UE to terminate data retransmission. Therefore, when the base station starts the mechanism for terminating data retransmission, it can timely terminate the data retransmission by sending the first DCI to the UE at an appropriate termination timing, thereby not only avoiding too many invalid retransmissions, but also reducing the system cost. Waste of resources, improve system throughput, and improve the stability of data transmission.
  • the present application also proposes an apparatus for data retransmission.
  • FIG. 8 is a schematic structural diagram of another apparatus for data retransmission provided by an embodiment of the present application, which is applied to a data sending end.
  • the apparatus 80 for data retransmission includes:
  • the second determination module 81 is configured to determine whether to start a mechanism for terminating data retransmission based on the determined receiving state of the data receiving end.
  • the apparatus for data retransmission provided in this embodiment of the present application may be configured in any communication device to execute the foregoing method for data retransmission.
  • the data transmitting end determines whether to start a mechanism for terminating data retransmission based on the determined receiving state of the data receiving end. Therefore, the data retransmission is terminated in time through the real-time reception status of the signal by the data receiving end, thereby avoiding excessive invalid retransmission, reducing the waste of system resources, and improving the system throughput.
  • the above-mentioned data transmitter is a UE
  • the above-mentioned second determination module 81 includes:
  • a fourth determining unit configured to, in response to determining that the base station terminates receiving uplink data, determine to initiate a mechanism for terminating data retransmission
  • the fifth determining unit is configured to, in response to determining that the base station is receiving uplink data, determine not to start the mechanism for terminating data retransmission.
  • the apparatus 80 for data retransmission further includes:
  • a seventh determining module configured to determine an opportunity to terminate the retransmission in response to acquiring the first DCI sent by the base station, where the first DCI is used to indicate termination of the data retransmission;
  • the first terminating module is configured to terminate the retransmission of the data at the timing of terminating the retransmission.
  • the apparatus 80 for data retransmission further includes:
  • an eighth determining module configured to determine an opportunity to terminate the retransmission in response to acquiring the second DCI sent by the base station, wherein the second DCI includes transmission channel parameters and/or modulation and coding strategy levels;
  • the second terminating module is configured to terminate the retransmission of the data at the timing of terminating the retransmission.
  • the above-mentioned data transmitting end is a base station
  • the second determining module 81 includes:
  • a sixth determining unit configured to, in response to acquiring the data reception status feedback information reported by the UE, determine to start a mechanism for terminating data retransmission
  • a seventh determining unit configured to determine not to start a mechanism for terminating data retransmission in response to acquiring the data receiving state feedback information reported by the UE;
  • an eighth determining unit configured to determine to start a mechanism for terminating data retransmission in response to not acquiring the data receiving state feedback information reported by the UE;
  • the ninth determining unit is configured to, in response to not acquiring the data receiving state feedback information reported by the UE, determine not to start a mechanism for terminating data retransmission.
  • the apparatus 80 for data retransmission further includes:
  • a ninth determination module configured to determine the timing of terminating retransmission based on a specified rule in response to the data receiving end having started a mechanism for terminating data retransmission;
  • the third terminating module is configured to terminate the retransmission of the data at the timing of terminating the retransmission.
  • the above-specified rules include at least one of the following rules: the first specified redundancy version has been transmitted, and the second specified redundancy version group has been transmitted. Or the number of data retransmissions reaches the third specified value.
  • the apparatus 80 for data retransmission further includes:
  • the data retransmission module is configured to retransmit the data to the data receiving end at the position specified by the new scheduling instruction.
  • the UE determines to start a mechanism for terminating data retransmission in response to determining that the base station terminates receiving uplink data, and determines that the current DCI is in response to acquiring the first DCI or the second DCI sent by the base station.
  • the timing of terminating data retransmission, and then terminating data retransmission Therefore, when the UE starts the mechanism for terminating data retransmission, it can terminate the data retransmission in time at an appropriate termination timing, thereby not only avoiding too many invalid retransmissions, but also reducing the waste of system resources and improving the system throughput. And improve the stability of data transmission.
  • the present application also proposes a communication device.
  • the communication device includes a processor, a transceiver, a memory, and an executable program stored on the memory and capable of being run by the processor, wherein the processor executes the data provided by any of the foregoing technical solutions when the executable program is executed. method of retransmission.
  • the communication device may be the aforementioned terminal or base station.
  • the processor may include various types of storage media, which are non-transitory computer storage media that can continue to memorize and store information on the communication device after the power is turned off.
  • the communication device includes a terminal or a base station.
  • the processor may be connected to the memory through a bus or the like, for reading the executable program stored on the memory, for example, at least one of FIG. 1 to FIG. 6 .
  • the present application also proposes a computer storage medium.
  • the computer storage medium provided by the embodiments of the present application stores an executable program; after the executable program is executed by the processor, the data retransmission method provided by any of the foregoing technical solutions can be implemented, for example, as shown in FIG. 1 to FIG. 6 . at least one of them.
  • FIG. 9 is a block diagram of a UE 900 provided by an embodiment of the present application.
  • UE 900 may be a mobile phone, computer, digital broadcast user equipment, messaging device, game console, tablet device, medical device, fitness device, personal digital assistant, and the like.
  • the UE 900 may include at least one of the following components: a processing component 902, a memory 904, a power supply component 906, a multimedia component 908, an audio component 910, an input/output (I/O) interface 912, a sensor component 914, and a communication component 916.
  • the processing component 902 generally controls the overall operations of the UE 900, such as operations associated with display, phone calls, data communications, camera operations, and recording operations.
  • the processing component 902 may include at least one processor 920 to execute instructions to perform all or part of the steps of the above-described methods. Additionally, processing component 902 may include at least one module that facilitates interaction between processing component 902 and other components. For example, processing component 902 may include a multimedia module to facilitate interaction between multimedia component 908 and processing component 902.
  • Memory 904 is configured to store various types of data to support operation at UE 900 . Examples of such data include instructions for any application or method operating on the UE 900, contact data, phonebook data, messages, pictures, videos, etc.
  • Memory 904 may be implemented by any type of volatile or non-volatile storage device or combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read only memory
  • EPROM erasable Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Magnetic or Optical Disk Magnetic Disk
  • Power supply component 906 provides power to various components of UE 900 .
  • Power components 906 may include a power management system, at least one power source, and other components associated with generating, managing, and distributing power to UE 900 .
  • Multimedia component 908 includes screens that provide an output interface between the UE 900 and the user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user.
  • the touch panel includes at least one touch sensor to sense touch, swipe, and gestures on the touch panel. The touch sensor may not only sense the boundaries of a touch or swipe action, but also detect wake-up time and pressure associated with the touch or swipe action.
  • the multimedia component 908 includes a front-facing camera and/or a rear-facing camera. When the UE 900 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each of the front and rear cameras can be a fixed optical lens system or have focal length and optical zoom capability.
  • Audio component 910 is configured to output and/or input audio signals.
  • the audio component 910 includes a microphone (MIC) that is configured to receive external audio signals when the UE 900 is in operating modes, such as call mode, recording mode, and voice recognition mode.
  • the received audio signal may be further stored in memory 904 or transmitted via communication component 916 .
  • audio component 910 also includes a speaker for outputting audio signals.
  • the I/O interface 912 provides an interface between the processing component 902 and a peripheral interface module, which may be a keyboard, a click wheel, a button, or the like. These buttons may include, but are not limited to: home button, volume buttons, start button, and lock button.
  • Sensor assembly 914 includes at least one sensor for providing UE 900 with various aspects of status assessment.
  • the sensor component 914 can detect the on/off state of the device 900, the relative positioning of components, such as the display and keypad of the UE 900, the sensor component 914 can also detect the position change of the UE 900 or a component of the UE 900, the user and the UE 900. Presence or absence of UE900 contact, UE900 orientation or acceleration/deceleration and UE900 temperature changes.
  • Sensor assembly 914 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact.
  • Sensor assembly 914 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor assembly 914 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
  • Communication component 916 is configured to facilitate wired or wireless communications between UE 900 and other devices.
  • the UE 900 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof.
  • the communication component 916 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 916 also includes a near field communication (NFC) module to facilitate short-range communication.
  • NFC near field communication
  • the NFC module may be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.
  • RFID radio frequency identification
  • IrDA infrared data association
  • UWB ultra-wideband
  • Bluetooth Bluetooth
  • the UE 900 may be implemented by at least one Application Specific Integrated Circuit (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSPD), Programmable Logic Device (PLD), Field Programmable Gate Array ( FPGA), controller, microcontroller, microprocessor or other electronic components implemented for performing the above method.
  • ASIC Application Specific Integrated Circuit
  • DSP Digital Signal Processor
  • DSPD Digital Signal Processing Device
  • PLD Programmable Logic Device
  • FPGA Field Programmable Gate Array
  • controller microcontroller, microprocessor or other electronic components implemented for performing the above method.
  • non-transitory computer-readable storage medium including instructions, such as a memory 904 including instructions, which are executable by the processor 920 of the UE 900 to perform the above method.
  • the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.
  • the base station 1000 may be provided as a network device.
  • the base station 1000 includes a processing component 1022, which further includes at least one processor, and a memory resource represented by memory 1032 for storing instructions executable by the processing component 1022, such as an application program.
  • An application program stored in memory 1032 may include one or more modules, each corresponding to a set of instructions.
  • the processing component 1022 is configured to execute instructions to execute any of the aforementioned methods applied to the base station, eg, the methods shown in FIG. 1 , FIG. 2 , FIG. 4 , and FIG. 6 .
  • the base station 1000 may also include a power supply assembly 1026 configured to perform power management of the base station 1000, a wired or wireless network interface 1050 configured to connect the base station 1000 to a network, and an input output (I/O) interface 1058.
  • Base station 1000 may operate based on an operating system stored in memory 1032, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM or the like.

Abstract

La présente demande se rapporte au domaine technique des communications sans fil, et concerne des procédés et des appareils de retransmission de données, un dispositif de communication et un support de stockage. Le procédé consiste : à déterminer, sur la base d'informations d'état de signal reçues pendant une période de temps continue, s'il faut initier un mécanisme pour mettre fin à une retransmission de données. Ainsi, le fait de savoir s'il faut initier le mécanisme pour mettre fin à la retransmission de données est déterminé sur la base des informations d'état de signal reçues pendant la période de temps continue. Par conséquent, au moyen d'un état de réception en temps réel d'une extrémité de réception de données pour un signal, une retransmission de données est rapidement terminée, ce qui permet d'éviter une retransmission invalide excessive, de réduire les déchets de ressources système et d'améliorer le débit du système.
PCT/CN2020/136975 2020-12-16 2020-12-16 Procédés et appareils de retransmission de données, dispositif de communication et support de stockage WO2022126456A1 (fr)

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CN202080004068.0A CN112689966B (zh) 2020-12-16 2020-12-16 数据重传的方法、装置、通信设备及存储介质

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