CN109474382B - Data transmission method, base station and terminal - Google Patents

Data transmission method, base station and terminal Download PDF

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Publication number
CN109474382B
CN109474382B CN201710808037.0A CN201710808037A CN109474382B CN 109474382 B CN109474382 B CN 109474382B CN 201710808037 A CN201710808037 A CN 201710808037A CN 109474382 B CN109474382 B CN 109474382B
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control signaling
scheduling
redundancy version
terminal
initial transmission
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CN109474382A (en
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王加庆
郑方政
孙韶辉
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • 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]

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a data transmission method, a base station and a terminal, relates to the field of communication, and solves the problem that the segmentation length of a code block cannot be determined or HARQ cannot be realized when the terminal cannot acquire an initial transmission code rate in the prior art. The method comprises the following steps: sending a control signaling indicating an initial transmission code rate to a terminal; and if the control signaling transmission failure is detected, continuing to send a control signaling indicating the initial transmission code rate to the terminal. The scheme of the invention ensures that the terminal can successfully receive the control signaling indicating the initial transmission code rate, and avoids the problem that the code block segmentation length cannot be determined or the HARQ cannot be realized because the terminal cannot acquire the initial transmission code rate.

Description

Data transmission method, base station and terminal
Technical Field
The present invention relates to the field of communications, and in particular, to a data transmission method, a base station, and a terminal.
Background
As 4G enters the large-scale commercial phase, the fifth generation mobile communication (5G) facing the future has become a global research and development hotspot. Under the concerted efforts of the global industry and academia, the 5G vision and key capacity requirements have been largely clear, and international standards-making work has also formally begun. HARQ (Hybrid Automatic Repeat reQuest) is an important technology.
At present, a base station needs to perform code block segmentation or determine an HARQ retransmission initial position according to an initial transmission code rate, and if a terminal cannot acquire the initial transmission code rate, the code block segmentation length cannot be determined or the HARQ cannot be realized, which is a problem to be solved urgently.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a data transmission method, a base station and a terminal, and solve the problem that the code block segmentation length cannot be determined or the HARQ cannot be realized when the terminal cannot acquire the initial transmission code rate in the prior art.
To solve the foregoing technical problem, an embodiment of the present invention provides a data transmission method, including:
sending a control signaling indicating an initial transmission code rate to a terminal;
and if the control signaling transmission failure is detected, continuing to send a control signaling indicating the initial transmission code rate to the terminal.
Optionally, the step of sending a control signaling indicating an initial transmission code rate to the terminal includes:
and sending a control signaling for scheduling the initial transmission redundancy version to the terminal, wherein the control signaling carries information for implicitly or displaying and indicating the initial transmission code rate.
Optionally, the step of sending the control signaling for scheduling the primary redundancy version to the terminal includes:
and sending a downlink control signaling for scheduling the primary transmission redundancy version to the terminal.
Optionally, if it is detected that the control signaling transmission fails, the step of continuing to send the control signaling indicating the initial transmission code rate to the terminal includes:
and if the transmission failure of the downlink control signaling of the scheduling primary transmission redundancy version is detected, continuously sending the downlink control signaling of the scheduling primary transmission redundancy version to the terminal.
Optionally, after sending the downlink control signaling for scheduling the primary transmission redundancy version to the terminal, the method further includes:
and if the fact that the downlink control signaling for scheduling the initial transmission redundancy version is successfully transmitted is detected, sending the downlink control signaling for scheduling other retransmission redundancy versions except the initial transmission redundancy version to the terminal.
Optionally, the step of sending the control signaling for scheduling the primary redundancy version to the terminal includes:
and sending an uplink control signaling for scheduling the primary transmission redundancy version to the terminal.
Optionally, if it is detected that the control signaling transmission fails, the step of continuing to send the control signaling indicating the initial transmission code rate to the terminal includes:
and if the uplink control signaling of the scheduling primary transmission redundancy version is detected to be failed to be transmitted, continuously sending the uplink control signaling of the scheduling primary transmission redundancy version to the terminal.
Optionally, before the step of continuously sending the uplink control signaling of the scheduled primary transmission redundancy version to the terminal if it is detected that the uplink control signaling of the scheduled primary transmission redundancy version fails to be transmitted, the method further includes:
detecting the power of a received signal;
and judging whether the uplink control signaling of the scheduling primary transmission redundancy version is successfully transmitted or not according to the power of the received signal.
Optionally, before the step of continuously sending the uplink control signaling of the scheduled primary transmission redundancy version to the terminal if it is detected that the uplink control signaling of the scheduled primary transmission redundancy version fails to be transmitted, the method further includes:
obtaining decoding results of all code blocks;
and scheduling whether the uplink control signaling transmission of the primary redundancy version is successful or not according to the decoding results of all the code blocks.
Optionally, the step of sending the control signaling for scheduling the primary redundancy version to the terminal includes:
and sending a downlink control channel (PDCCH) for scheduling the initial transmission redundancy version to a terminal, wherein the Modulation and Coding Strategy (MCS) in the PDCCH implicitly or displays and indicates the initial transmission code rate.
To solve the above technical problem, an embodiment of the present invention further provides a base station, including:
the first sending module is used for sending a control signaling indicating the initial transmission code rate to the terminal;
and the second sending module is used for continuously sending the control signaling indicating the initial transmission code rate to the terminal if the control signaling transmission failure is detected.
In order to solve the above technical problem, an embodiment of the present invention further provides a base station, including a transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor;
the transceiver is used for sending a control signaling indicating an initial transmission code rate to the terminal;
the processor is used for reading the program in the memory and executing the following processes: and when the control signaling transmission failure is detected, the transceiver continuously sends the control signaling indicating the initial transmission code rate to the terminal.
Optionally, the transceiver is further configured to send a control signaling for scheduling an initial transmission redundancy version to the terminal, where the control signaling carries information for implicitly or explicitly indicating an initial transmission code rate.
Optionally, the transceiver is further configured to send a downlink control signaling for scheduling the primary transmission redundancy version to the terminal.
Optionally, the processor is further configured to perform the following processes: and when the transmission failure of the downlink control signaling of the scheduling initial transmission redundancy version is detected, the transceiver continuously sends the downlink control signaling of the scheduling initial transmission redundancy version to the terminal.
Optionally, the processor is further configured to perform the following processes: after the transceiver sends the downlink control signaling for scheduling the initial transmission redundancy version to the terminal, the transceiver sends the downlink control signaling for scheduling other retransmission redundancy versions except the initial transmission redundancy version to the terminal when detecting that the downlink control signaling for scheduling the initial transmission redundancy version is successfully transmitted.
Optionally, the transceiver is further configured to send an uplink control signaling for scheduling the primary transmission redundancy version to the terminal.
Optionally, the processor is further configured to perform the following processes: and when the transmission failure of the uplink control signaling of the scheduling initial transmission redundancy version is detected, the transceiver continuously sends the uplink control signaling of the scheduling initial transmission redundancy version to the terminal.
Optionally, the processor is further configured to perform the following processes: detecting that the transmission of the uplink control signaling of the scheduling initial transmission redundancy version fails, and detecting the power of a received signal before the transceiver continuously sends the uplink control signaling of the scheduling initial transmission redundancy version to the terminal;
the processor is further configured to perform the following process: and judging whether the uplink control signaling of the scheduling primary transmission redundancy version is successfully transmitted or not according to the power of the received signal.
Optionally, the processor is further configured to perform the following processes: when the failure of the transmission of the uplink control signaling for scheduling the initial transmission redundancy version is detected, the transceiver acquires the decoding results of all code blocks before continuously sending the uplink control signaling for scheduling the initial transmission redundancy version to the terminal;
the processor is further configured to perform the following process: and judging whether the uplink control signaling of the scheduling primary transmission redundancy version is successfully transmitted or not according to the decoding results of all the code blocks.
Optionally, the transceiver is further configured to send a downlink control channel PDCCH for scheduling an initial transmission redundancy version to the terminal, where the modulation and coding strategy MCS in the PDCCH implicitly or explicitly indicates an initial transmission code rate.
To solve the above technical problem, an embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored, the program implementing the data transmission method as described in any one of the above when executed by a processor.
In order to solve the above technical problem, an embodiment of the present invention further provides a data transmission method, including:
receiving a control signaling which indicates an initial transmission code rate and is sent by a base station;
if the control signaling is successfully received, determining an initial transmission code rate according to the control signaling;
and if the control signaling is failed to be received, continuing to receive the control signaling which indicates the initial transmission code rate and is sent by the base station.
Optionally, the step of receiving a control signaling indicating an initial transmission code rate sent by the base station includes:
and receiving a control signaling for scheduling the initial transmission redundancy version sent by the base station, wherein the control signaling carries information for implicitly or displaying and indicating the initial transmission code rate.
Optionally, the step of receiving the control signaling for scheduling the primary transmission redundancy version sent by the base station includes:
and receiving a downlink control signaling for scheduling the primary transmission redundancy version sent by the base station.
Optionally, after receiving the downlink control signaling for scheduling the primary transmission redundancy version sent by the base station, the method further includes:
receiving downlink control signaling which is sent by a base station and used for scheduling other retransmission redundancy versions except the primary transmission redundancy version;
and if the downlink control signaling of the primary transmission redundancy version is not correctly decoded and scheduled is detected, other retransmission redundancy versions scheduled by the downlink control signaling are abandoned.
Optionally, the step of receiving the control signaling for scheduling the primary transmission redundancy version sent by the base station includes:
and receiving an uplink control signaling for scheduling the primary transmission redundancy version sent by the base station.
Optionally, the step of receiving the control signaling for scheduling the primary transmission redundancy version sent by the base station includes:
and receiving a downlink control channel (PDCCH) for scheduling the initial transmission redundancy version sent by the base station, wherein the Modulation and Coding Strategy (MCS) in the PDCCH implicitly or displays and indicates the initial transmission code rate.
To solve the above technical problem, an embodiment of the present invention further provides a terminal, including:
the first receiving module is used for receiving a control signaling which indicates an initial transmission code rate and is sent by a base station;
a determining module, configured to determine an initial transmission code rate according to the control signaling if the control signaling is successfully received;
and the second receiving module is used for continuously receiving the control signaling which indicates the initial transmission code rate and is sent by the base station if the control signaling is failed to be received.
In order to solve the above technical problem, an embodiment of the present invention further provides a terminal, including a transceiver, a memory, a processor, and a computer program stored in the memory and executable on the processor;
the transceiver is used for receiving a control signaling which indicates an initial transmission code rate and is sent by a base station;
the processor is used for reading the program in the memory and executing the following processes: if the control signaling is successfully received, determining an initial transmission code rate according to the control signaling;
the transceiver is further configured to continue to receive the control signaling indicating the initial transmission code rate sent by the base station if the control signaling is failed to be received.
Optionally, the transceiver is further configured to receive a control signaling for scheduling an initial transmission redundancy version, where the control signaling carries information for implicitly or explicitly indicating an initial transmission code rate, where the information is sent by the base station.
Optionally, the transceiver is further configured to receive a downlink control signaling for scheduling the primary transmission redundancy version, where the downlink control signaling is sent by the base station.
Optionally, the transceiver is further configured to receive a downlink control signaling for scheduling a primary redundancy version, which is sent by the base station, and then receive downlink control signaling for scheduling other retransmission redundancy versions except the primary redundancy version, which is sent by the base station;
the processor is further configured to perform the following process: and if the downlink control signaling of the primary transmission redundancy version is not correctly decoded and scheduled is detected, other retransmission redundancy versions scheduled by the downlink control signaling are abandoned.
Optionally, the transceiver is further configured to receive an uplink control signaling for scheduling the primary transmission redundancy version, where the uplink control signaling is sent by the base station.
Optionally, the transceiver is further configured to receive a downlink control channel PDCCH for scheduling an initial transmission redundancy version, where the modulation and coding strategy MCS in the PDCCH implicitly or explicitly indicates an initial transmission code rate.
To solve the above technical problem, an embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored, the program implementing the data transmission method as described in any one of the above when executed by a processor.
The technical scheme of the invention has the following beneficial effects:
in the data transmission method of the embodiment of the invention, after the control signaling indicating the initial transmission code rate is sent to the terminal, if the control signaling transmission failure is detected, the control signaling indicating the initial transmission code rate is continuously sent to the terminal. Therefore, the terminal can successfully receive the control signaling indicating the initial transmission code rate, and the problem that the code block segmentation length cannot be determined or the HARQ cannot be realized due to the fact that the terminal cannot acquire the initial transmission code rate is solved.
Drawings
Fig. 1 is a flowchart of a data transmission method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a base station according to an embodiment of the present invention;
fig. 3 is another schematic structural diagram of a base station according to an embodiment of the present invention;
fig. 4 is another flowchart of a data transmission method according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 6 is another schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
In some embodiments of the present invention, referring to fig. 1, a data transmission method is provided, including:
step 101, sending a control signaling indicating an initial transmission code rate to a terminal;
and step 102, if the control signaling transmission failure is detected, continuing to send a control signaling indicating an initial transmission code rate to the terminal.
The step 102 may be executed in a loop, that is, after the step 102 is executed, whether the control signaling transmission is successful or not may be continuously detected, and if the control signaling transmission is detected to be failed, the control signaling indicating the initial transmission code rate is continuously sent to the terminal until the control signaling transmission is successful.
The control signaling sent in step 101 may be different from the control signaling sent in step 102.
In the data transmission method of the embodiment of the invention, after the control signaling indicating the initial transmission code rate is sent to the terminal, if the control signaling transmission failure is detected, the control signaling indicating the initial transmission code rate is continuously sent to the terminal. Therefore, the terminal can successfully receive the control signaling indicating the initial transmission code rate, and the problem that the code block segmentation length cannot be determined or the HARQ cannot be realized due to the fact that the terminal cannot acquire the initial transmission code rate is solved.
Optionally, the step 101 includes:
step 1011, sending a control signaling for scheduling the initial transmission redundancy version to the terminal, wherein the control signaling carries information for implicitly or displaying and indicating the initial transmission code rate.
At this time, the terminal may determine the initial transmission code rate according to the information indicating the initial transmission code rate implicitly or displayed in the control signaling for scheduling the initial transmission redundancy version. If the control signaling for scheduling the initial transmission redundancy version is detected to be failed to be transmitted, the base station can continue to send the control signaling for scheduling the initial transmission redundancy version to the terminal, so that the terminal can be ensured to successfully obtain the initial transmission code rate.
In addition, the step 101 may further include:
and sending a control signaling for calling other retransmission redundancy versions to the terminal, wherein the control signaling carries information for implicitly or displaying and indicating the initial transmission code rate.
For example, bit information may be added to the control signaling for invoking other retransmission redundancy versions, the added bit information carries a complete MCS (Modulation and Coding Scheme) of the primary redundancy version, or the added bit information indicates a difference between a current MCS and an MCS of the primary redundancy version, and the MCS of the primary redundancy version indicates the primary code rate implicitly or explicitly. But is not limited thereto.
Specifically, the step 1011 includes:
and sending a downlink control channel (PDCCH) for scheduling the initial transmission redundancy version to a terminal, wherein the Modulation and Coding Strategy (MCS) in the PDCCH implicitly or displays and indicates the initial transmission code rate.
At this time, the control signaling of the initial transmission redundancy version, i.e. the PDCCH, is scheduled, and the terminal can determine the initial transmission code rate through an implicit or explicit method according to the MCS in the PDCCH. If the transmission failure of the PDCCH for scheduling the initial transmission redundancy version is detected, the base station can continuously send the PDCCH for scheduling the initial transmission redundancy version to the terminal, so that the terminal can be ensured to successfully obtain the initial transmission code rate.
For downlink scheduling, optionally, the step 1011 includes:
and sending a downlink control signaling for scheduling the primary transmission redundancy version to the terminal.
At this time, the terminal may determine the initial transmission code rate according to the downlink control signaling for scheduling the initial transmission redundancy version.
The step 102 includes:
and if the transmission failure of the downlink control signaling of the scheduling primary transmission redundancy version is detected, continuously sending the downlink control signaling of the scheduling primary transmission redundancy version to the terminal.
At this time, if it is detected that the downlink control signaling for scheduling the initial transmission redundancy version fails to be transmitted, the base station will continue to send the downlink control signaling for scheduling the initial transmission redundancy version to the terminal, thereby ensuring that the terminal can successfully receive the downlink control signaling for scheduling the initial transmission redundancy version, and further successfully obtaining the initial transmission code rate.
For example, the downlink control signaling for scheduling the initial transmission redundancy version may be carried in the PDCCH, and the MCS in the PDCCH implicitly or explicitly indicates the initial transmission code rate. At this time, the base station sends a downlink control signaling for scheduling the primary transmission redundancy version to the terminal, the downlink control signaling is carried in the PDCCH, if the terminal does not successfully receive the PDCCH, the terminal acts as not sending NACK, therefore, the base station can detect whether the ACK or the NACK is successfully received, if the ACK or the NACK is not successfully received, the base station determines that the transmission of the PDCCH for scheduling the primary transmission redundancy version fails, and continues to send the PDCCH for scheduling the primary transmission redundancy version.
Optionally, after sending the downlink control signaling for scheduling the primary transmission redundancy version to the terminal, the method further includes:
and if the fact that the downlink control signaling for scheduling the initial transmission redundancy version is successfully transmitted is detected, sending the downlink control signaling for scheduling other retransmission redundancy versions except the initial transmission redundancy version to the terminal.
At this time, if it is detected that the downlink control signaling for scheduling the initial transmission redundancy version is successfully transmitted, the base station continues to send the downlink control signaling for scheduling the retransmission redundancy versions other than the initial transmission redundancy version to the terminal.
If the terminal receives the downlink control signaling which is sent by the base station and used for scheduling other retransmission redundancy versions, and the downlink control signaling which is used for scheduling the primary transmission redundancy version is not correctly decoded, the terminal can give up decoding other retransmission redundancy versions scheduled by the downlink control signaling.
Wherein, the downlink control signaling for scheduling other retransmission redundancy versions can also be carried in the PDCCH. And the base station sends the PDCCH for scheduling the initial transmission redundancy version to the terminal, and if the terminal does not successfully receive the PDCCH, the terminal acts not to send NACK. Although the terminal does not send the NACK, the base station may decode the noise into the NACK by mistake, and at this time, the base station determines that the PDCCH scheduling the primary redundancy version is successfully transmitted and continues to send the PDCCH scheduling other retransmission redundancy versions to the terminal. At this time, after receiving the scheduling signaling, the terminal finds that the base station sends a retransmission signal and does not correctly decode and schedule the PDCCH of the primary redundancy version through NDI (New Data Indication) or an Indication of the retransmission redundancy version, and then the terminal abandons decoding of other retransmission redundancy versions scheduled by the PDCCH.
For uplink scheduling, optionally, step 1011 above includes:
and sending an uplink control signaling for scheduling the primary transmission redundancy version to the terminal.
At this time, the terminal may determine the initial transmission code rate according to the uplink control signaling for scheduling the initial transmission redundancy version.
The step 102 includes:
and if the uplink control signaling of the scheduling primary transmission redundancy version is detected to be failed to be transmitted, continuously sending the uplink control signaling of the scheduling primary transmission redundancy version to the terminal.
At this time, if it is detected that the uplink control signaling for scheduling the initial transmission redundancy version fails to be transmitted, the base station will continue to send the uplink control signaling for scheduling the initial transmission redundancy version to the terminal, thereby ensuring that the terminal can successfully receive the uplink control signaling for scheduling the initial transmission redundancy version, and further successfully obtaining the initial transmission code rate.
Optionally, before the step of continuously sending the uplink control signaling of the scheduled primary transmission redundancy version to the terminal if it is detected that the uplink control signaling of the scheduled primary transmission redundancy version fails to be transmitted, the method further includes:
detecting the power of a received signal;
and judging whether the uplink control signaling of the scheduling primary transmission redundancy version is successfully transmitted or not according to the power of the received signal.
At this time, whether the uplink control signaling of the scheduling primary transmission redundancy version is successfully transmitted can be judged according to the power level of the received signal. If the power of the received signal is lower than the threshold value, that is, the power level of the received signal is very low, it may be determined that the uplink control signaling of the scheduling primary redundancy version fails to be transmitted.
For example, the power of a DMRS (Demodulation Reference Signal) may be detected, and whether uplink control signaling for scheduling the initial redundancy version is successfully transmitted is determined, but is not limited thereto.
Optionally, before the step of continuously sending the uplink control signaling of the scheduled primary transmission redundancy version to the terminal if it is detected that the uplink control signaling of the scheduled primary transmission redundancy version fails to be transmitted, the method further includes:
obtaining decoding results of all code blocks;
and judging whether the uplink control signaling of the scheduling primary transmission redundancy version is successfully transmitted or not according to the decoding results of all the code blocks.
At this time, whether the uplink control signaling of the scheduling primary redundancy version is successfully transmitted can be judged according to the decoding results of all Code Blocks (CB). If all code blocks are decoded wrongly, the uplink control signaling transmission failure of the scheduling primary redundancy version can be determined.
The uplink control signaling for scheduling the initial transmission redundancy version may be carried in the PDCCH, for example. At this time, the base station sends an uplink control signaling for scheduling the initial transmission redundancy version to the terminal, and the uplink control signaling is carried in the PDCCH, and if the terminal does not successfully receive the PDCCH, the terminal does not send any redundancy version. The base station decodes and finds that the terminal does not send signals, and can judge whether the terminal successfully receives the PDCCH for scheduling the initial transmission redundancy version or not by decoding the power level of the DMRS signals sent by the terminal or the decoding results of all code blocks. And if the terminal is confirmed not to receive the PDCCH for scheduling the initial transmission redundancy version, continuously sending the PDCCH for scheduling the initial transmission redundancy version to the terminal.
The following describes an application flow of the data transmission method according to the embodiment of the present invention with reference to a specific application scenario.
The first application scenario is that in the existing 4G LTE-turbo HARQ, 4 redundancy versions define 4 starting points, and each time transmission is initiated from a fixed starting point, but for a 5G LDPC code, such a retransmission method may cause severe repetition and missing situations and a high frame error rate. In order to avoid the occurrence of the duplication and deletion situations, the transmission start position of each retransmission redundancy version can be dynamically selected based on the initial transmission code rate. If the terminal cannot acquire the initial transmission code rate, the HARQ cannot be realized.
In the data transmission method applied in the embodiment of the invention, the base station sends the PDCCH for scheduling the initial transmission redundancy version to the terminal, and the MCS in the PDCCH implicitly or displays and indicates the initial transmission code rate. If the terminal does not successfully receive the PDCCH for scheduling the primary transmission redundancy version, the base station detects that the transmission of the PDCCH for scheduling the primary transmission redundancy version fails, and the base station continues to send the PDCCH for scheduling the primary transmission redundancy version to the terminal until the terminal successfully receives the PDCCH for scheduling the primary transmission redundancy version. At this time, the terminal can successfully obtain the initial transmission code rate, and determines the transmission starting position of each retransmission redundancy version according to the initial transmission code rate.
In the second application scenario, there are two BGs (Base Graph) in a 5G LDPC (Low Density Parity Check), where the maximum length of BG #1 is 8448 and the maximum length of BG #2 is 3840. In the application scenario, code block segmentation is performed based on the initial transmission code rate. For example, according to the conclusion of the 3GPP conference, when the initial transmission code rate is lower than 1/4, BG #2 is used for code block segmentation. That is, when the initial transmission rate is lower than 1/4, the code block segmentation needs to be performed according to 3840, regardless of the size of the transport block. When the BG #2 is selected according to the initial transmission code rate, the BG #2 is inevitably selected for retransmission, and the code rate information in the control signaling for scheduling retransmission version cannot be the basis for selecting the BG. At this time, the terminal needs to solve the control signaling to obtain the initial transmission code rate, and can determine the adopted BG, thereby determining the code block segmentation length. If the terminal cannot acquire the initial transmission code rate, the code block segmentation length cannot be determined.
In the data transmission method applied in the embodiment of the invention, the base station sends the PDCCH for scheduling the initial transmission redundancy version to the terminal, and the MCS in the PDCCH implicitly or displays and indicates the initial transmission code rate. If the terminal does not successfully receive the PDCCH for scheduling the primary transmission redundancy version, the base station detects that the transmission of the PDCCH for scheduling the primary transmission redundancy version fails, and the base station continues to send the PDCCH for scheduling the primary transmission redundancy version to the terminal until the terminal successfully receives the PDCCH for scheduling the primary transmission redundancy version. At this time, the terminal can successfully obtain the initial transmission code rate, and the code block segmentation length is determined according to the initial transmission code rate.
In the data transmission method of the embodiment of the invention, after the control signaling indicating the initial transmission code rate is sent to the terminal, if the control signaling transmission failure is detected, the control signaling indicating the initial transmission code rate is continuously sent to the terminal. Therefore, the terminal can successfully receive the control signaling indicating the initial transmission code rate, and the problem that the code block segmentation length cannot be determined or the HARQ cannot be realized due to the fact that the terminal cannot acquire the initial transmission code rate is solved.
In some embodiments of the present invention, referring to fig. 2, there is also provided a base station, including:
a first sending module 201, configured to send a control signaling indicating an initial transmission rate to a terminal;
a second sending module 202, configured to continue to send, to the terminal, a control signaling indicating an initial transmission code rate if it is detected that the control signaling fails to be transmitted.
After the base station of the embodiment of the invention sends the control signaling indicating the initial transmission code rate to the terminal, if the control signaling transmission failure is detected, the base station continues to send the control signaling indicating the initial transmission code rate to the terminal. Therefore, the terminal can successfully receive the control signaling indicating the initial transmission code rate, and the problem that the code block segmentation length cannot be determined or the HARQ cannot be realized due to the fact that the terminal cannot acquire the initial transmission code rate is solved.
Optionally, the first sending module 201 includes:
and the first sending submodule is used for sending a control signaling for scheduling the initial transmission redundancy version to the terminal, wherein the control signaling carries information for implicitly or displaying and indicating the initial transmission code rate.
Optionally, the first sending sub-module includes:
and the first sending unit is used for sending the downlink control signaling for scheduling the primary transmission redundancy version to the terminal.
Optionally, the second sending module 202 includes:
and the second sending submodule is used for continuously sending the downlink control signaling of the scheduling primary transmission redundancy version to the terminal if the transmission failure of the downlink control signaling of the scheduling primary transmission redundancy version is detected.
Optionally, the method further includes:
and the third sending module is used for sending the downlink control signaling of other retransmission redundancy versions except the primary transmission redundancy version to the terminal if the first sending unit detects that the downlink control signaling of the scheduling primary transmission redundancy version is successfully transmitted after the first sending unit sends the downlink control signaling of the scheduling primary transmission redundancy version to the terminal.
Optionally, the first sending sub-module includes:
and the second sending unit is used for sending the uplink control signaling for scheduling the primary transmission redundancy version to the terminal.
Optionally, the second sending module 202 includes:
and the third sending submodule is used for detecting the transmission failure of the uplink control signaling of the scheduling initial transmission redundancy version and continuously sending the uplink control signaling of the scheduling initial transmission redundancy version to the terminal.
Optionally, the method further includes:
a detection module, configured to detect power of a received signal before the third sending sub-module continues to send the uplink control signaling of the scheduled primary transmission redundancy version to the terminal if it is detected that transmission of the uplink control signaling of the scheduled primary transmission redundancy version fails;
and the first judging module is used for judging whether the uplink control signaling of the scheduling primary transmission redundancy version is successfully transmitted or not according to the power of the received signal.
Optionally, the method further includes:
an obtaining module, configured to obtain decoding results for all code blocks before the step of detecting that transmission of the uplink control signaling for scheduling the initial transmission redundancy version fails and continuing to send the uplink control signaling for scheduling the initial transmission redundancy version to the terminal;
and the second judgment module is used for judging whether the uplink control signaling of the scheduling primary transmission redundancy version is successfully transmitted or not according to the decoding results of all the code blocks.
Optionally, the first sending sub-module includes:
and a third sending unit, configured to send a downlink control channel PDCCH for scheduling an initial transmission redundancy version to the terminal, where the modulation and coding strategy MCS in the PDCCH implicitly or explicitly indicates an initial transmission code rate.
After the base station of the embodiment of the invention sends the control signaling indicating the initial transmission code rate to the terminal, if the control signaling transmission failure is detected, the base station continues to send the control signaling indicating the initial transmission code rate to the terminal. Therefore, the terminal can successfully receive the control signaling indicating the initial transmission code rate, and the problem that the code block segmentation length cannot be determined or the HARQ cannot be realized due to the fact that the terminal cannot acquire the initial transmission code rate is solved.
It should be noted that, all the implementation manners in the above data transmission method embodiment are applicable to the embodiment of the base station, and the same technical effect can be achieved.
In some embodiments of the present invention, referring to fig. 3, there is also provided a base station comprising a transceiver 310, a memory 320, a processor 300, a bus interface and a computer program stored on the memory 320 and executable on the processor 300;
the transceiver 310 is configured to send a control signaling indicating an initial transmission code rate to a terminal;
the processor 300 is used for reading the program in the memory and executing the following processes: when detecting that the control signaling transmission fails, the transceiver 310 continues to send the control signaling indicating the initial transmission code rate to the terminal.
Where in fig. 3, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 300 and memory represented by memory 320. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 310 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The processor 300 is responsible for managing the bus architecture and general processing, and the memory 320 may store data used by the processor 300 in performing operations.
Optionally, the transceiver 310 is further configured to send a control signaling for scheduling an initial transmission redundancy version to the terminal, where the control signaling carries information for implicitly or explicitly indicating an initial transmission code rate.
Optionally, the transceiver 310 is further configured to send a downlink control signaling for scheduling the primary redundancy version to the terminal.
Optionally, the processor 300 is further configured to perform the following processes: when detecting that the transmission of the downlink control signaling for scheduling the initial transmission redundancy version fails, the transceiver 310 continues to send the downlink control signaling for scheduling the initial transmission redundancy version to the terminal.
Optionally, the processor 300 is further configured to perform the following processes: after the transceiver 310 sends the downlink control signaling for scheduling the primary transmission redundancy version to the terminal, the transceiver 310 detects that the transmission of the downlink control signaling for scheduling the primary transmission redundancy version is successful, and sends the downlink control signaling for scheduling other retransmission redundancy versions except the primary transmission redundancy version to the terminal.
Optionally, the transceiver 310 is further configured to send an uplink control signaling for scheduling the primary transmission redundancy version to the terminal.
Optionally, the processor 300 is further configured to perform the following processes: when detecting that the uplink control signaling for scheduling the initial transmission redundancy version fails to be transmitted, the transceiver 310 continues to send the uplink control signaling for scheduling the initial transmission redundancy version to the terminal.
Optionally, the processor 300 is further configured to perform the following processes: detecting that the transmission of the uplink control signaling of the scheduling primary transmission redundancy version fails, and detecting the power of a received signal before the transceiver 310 continuously sends the uplink control signaling of the scheduling primary transmission redundancy version to the terminal;
the processor 300 is further configured to perform the following process: and judging whether the uplink control signaling of the scheduling primary transmission redundancy version is successfully transmitted or not according to the power of the received signal.
Optionally, the processor 300 is further configured to perform the following processes: when detecting that the transmission of the uplink control signaling for scheduling the initial transmission redundancy version fails, the transceiver 310 acquires the decoding results of all code blocks before continuing to send the uplink control signaling for scheduling the initial transmission redundancy version to the terminal;
the processor 300 is further configured to perform the following process: and judging whether the uplink control signaling of the scheduling primary transmission redundancy version is successfully transmitted or not according to the decoding results of all the code blocks.
Optionally, the transceiver 310 is further configured to send a downlink control channel PDCCH for scheduling an initial transmission redundancy version to the terminal, where the modulation and coding strategy MCS in the PDCCH implicitly or explicitly indicates an initial transmission code rate.
In some embodiments of the invention, there is also provided a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:
sending a control signaling indicating an initial transmission code rate to a terminal;
and if the control signaling transmission failure is detected, continuing to send a control signaling indicating the initial transmission code rate to the terminal.
Optionally, the program further implements the following steps when executed by the processor: and sending a control signaling for scheduling the initial transmission redundancy version to the terminal, wherein the control signaling carries information for implicitly or displaying and indicating the initial transmission code rate.
Optionally, the program further implements the following steps when executed by the processor: and sending a downlink control signaling for scheduling the primary transmission redundancy version to the terminal.
Optionally, the program further implements the following steps when executed by the processor: and if the transmission failure of the downlink control signaling of the scheduling primary transmission redundancy version is detected, continuously sending the downlink control signaling of the scheduling primary transmission redundancy version to the terminal.
Optionally, the program further implements the following steps when executed by the processor: and after sending the downlink control signaling for scheduling the primary transmission redundancy version to the terminal, if the downlink control signaling for scheduling the primary transmission redundancy version is detected to be successfully transmitted, sending the downlink control signaling for scheduling other retransmission redundancy versions except the primary transmission redundancy version to the terminal.
Optionally, the program further implements the following steps when executed by the processor: and sending an uplink control signaling for scheduling the primary transmission redundancy version to the terminal.
Optionally, the program further implements the following steps when executed by the processor: and if the uplink control signaling of the scheduling primary transmission redundancy version is detected to be failed to be transmitted, continuously sending the uplink control signaling of the scheduling primary transmission redundancy version to the terminal.
Optionally, the program further implements the following steps when executed by the processor: if the uplink control signaling of the scheduling primary transmission redundancy version is detected to be failed to be transmitted, the power of the received signal is detected before the step of continuously sending the uplink control signaling of the scheduling primary transmission redundancy version to the terminal; and judging whether the uplink control signaling of the scheduling primary transmission redundancy version is successfully transmitted or not according to the power of the received signal.
Optionally, the program further implements the following steps when executed by the processor: acquiring decoding results of all code blocks before the step of detecting that the uplink control signaling for scheduling the primary transmission redundancy version fails to be transmitted and continuously sending the uplink control signaling for scheduling the primary transmission redundancy version to the terminal; and judging whether the uplink control signaling of the scheduling primary transmission redundancy version is successfully transmitted or not according to the decoding results of all the code blocks.
Optionally, the program further implements the following steps when executed by the processor: and sending a downlink control channel (PDCCH) for scheduling the initial transmission redundancy version to a terminal, wherein the Modulation and Coding Strategy (MCS) in the PDCCH implicitly or displays and indicates the initial transmission code rate.
In some embodiments of the present invention, referring to fig. 4, there is further provided a data transmission method, including:
step 401, receiving a control signaling indicating an initial transmission code rate sent by a base station;
step 402, if the control signaling is successfully received, determining an initial transmission code rate according to the control signaling;
step 403, if the control signaling is failed to be received, continuing to receive the control signaling indicating the initial transmission code rate sent by the base station.
In the data transmission method of the embodiment of the invention, after the base station sends the control signaling indicating the initial transmission code rate to the terminal, if the control signaling transmission failure is detected, the control signaling indicating the initial transmission code rate is continuously sent to the terminal. The terminal can continue to receive the control signaling indicating the initial transmission code rate sent by the base station when the control signaling is failed to be received. Therefore, the terminal can successfully receive the control signaling indicating the initial transmission code rate, and the problem that the code block segmentation length cannot be determined or the HARQ cannot be realized due to the fact that the terminal cannot acquire the initial transmission code rate is solved.
Optionally, step 401 includes:
step 4011, receiving a control signaling for scheduling an initial transmission redundancy version sent by a base station, where the control signaling carries information for implicitly or explicitly indicating an initial transmission code rate.
At this time, the terminal may determine the initial transmission code rate according to the information indicating the initial transmission code rate implicitly or displayed in the control signaling for scheduling the initial transmission redundancy version. If the control signaling for scheduling the initial transmission redundancy version is detected to be failed to be transmitted, the base station can continuously send the control signaling for scheduling the initial transmission redundancy version to the terminal. The terminal can continue to receive the control signaling of the scheduling initial transmission redundancy version sent by the base station when the control signaling is failed to be received. Therefore, the terminal can successfully obtain the initial transmission code rate.
Specifically, step 4011 includes:
and receiving a downlink control channel (PDCCH) for scheduling the initial transmission redundancy version sent by the base station, wherein the Modulation and Coding Strategy (MCS) in the PDCCH implicitly or displays and indicates the initial transmission code rate.
At this time, the terminal may determine the initial transmission rate in an implicit or explicit manner according to the MCS in the PDCCH. If the transmission failure of the PDCCH for scheduling the initial transmission redundancy version is detected, the base station can continuously send the PDCCH for scheduling the initial transmission redundancy version to the terminal. The terminal fails to receive the PDCCH for scheduling the initial transmission redundancy version, and can continuously receive the PDCCH for scheduling the initial transmission redundancy version sent by the base station. Therefore, the terminal can successfully obtain the initial transmission code rate.
For downlink scheduling, optionally, the step 4011 includes:
and receiving a downlink control signaling for scheduling the primary transmission redundancy version sent by the base station.
At this time, the terminal may determine the initial transmission code rate according to the downlink control signaling for scheduling the initial transmission redundancy version.
If the downlink control signaling of the scheduling primary transmission redundancy version is detected to be failed to be transmitted, the base station can continuously send the downlink control signaling of the scheduling primary transmission redundancy version to the terminal. The terminal fails to receive the downlink control signaling of the scheduling initial transmission redundancy version, and can continuously receive the downlink control signaling of the scheduling initial transmission redundancy version sent by the base station. Therefore, the terminal can successfully receive the downlink control signaling for scheduling the primary transmission redundancy version, and further successfully obtain the primary transmission code rate.
Optionally, after receiving the downlink control signaling for scheduling the primary transmission redundancy version sent by the base station, the method further includes:
receiving downlink control signaling which is sent by a base station and used for scheduling other retransmission redundancy versions except the primary transmission redundancy version;
and if the downlink control signaling of the primary transmission redundancy version is not correctly decoded and scheduled is detected, other retransmission redundancy versions scheduled by the downlink control signaling are abandoned.
At this time, if it is detected that the downlink control signaling for scheduling the initial transmission redundancy version is successfully transmitted, the base station continues to send the downlink control signaling for scheduling the retransmission redundancy versions other than the initial transmission redundancy version to the terminal. If the terminal receives the downlink control signaling for scheduling other retransmission redundancy versions sent by the base station and does not correctly decode the downlink control signaling for scheduling the primary transmission redundancy version, the terminal can give up decoding other retransmission redundancy versions scheduled by the downlink control signaling.
For uplink scheduling, optionally, the step 4011 includes:
and receiving an uplink control signaling for scheduling the primary transmission redundancy version sent by the base station.
At this time, the terminal may determine the initial transmission code rate according to the uplink control signaling for scheduling the initial transmission redundancy version.
If the uplink control signaling of the scheduling primary transmission redundancy version is detected to be failed to be transmitted, the base station can continuously send the uplink control signaling of the scheduling primary transmission redundancy version to the terminal. The terminal fails to receive the uplink control signaling of the scheduling initial transmission redundancy version and can continuously receive the uplink control signaling of the scheduling initial transmission redundancy version sent by the base station. Therefore, the terminal can successfully receive the uplink control signaling for scheduling the initial transmission redundancy version, and further successfully obtain the initial transmission code rate.
In the data transmission method of the embodiment of the invention, after the base station sends the control signaling indicating the initial transmission code rate to the terminal, if the control signaling transmission failure is detected, the control signaling indicating the initial transmission code rate is continuously sent to the terminal. The terminal can continue to receive the control signaling indicating the initial transmission code rate sent by the base station when the control signaling is failed to be received. Therefore, the terminal can successfully receive the control signaling indicating the initial transmission code rate, and the problem that the code block segmentation length cannot be determined or the HARQ cannot be realized due to the fact that the terminal cannot acquire the initial transmission code rate is solved.
In some embodiments of the present invention, as shown with reference to fig. 5, there is also provided a terminal, including:
a first receiving module 501, configured to receive a control signaling indicating an initial transmission rate sent by a base station;
a determining module 502, configured to determine an initial transmission code rate according to the control signaling if the control signaling is successfully received;
a second receiving module 503, configured to continue to receive the control signaling indicating the initial transmission code rate sent by the base station if the control signaling is failed to be received.
In the terminal of the embodiment of the invention, after the base station sends the control signaling indicating the initial transmission code rate to the terminal, if the control signaling transmission failure is detected, the control signaling indicating the initial transmission code rate is continuously sent to the terminal. The terminal can continue to receive the control signaling indicating the initial transmission code rate sent by the base station when the control signaling is failed to be received. Therefore, the terminal can successfully receive the control signaling indicating the initial transmission code rate, and the problem that the code block segmentation length cannot be determined or the HARQ cannot be realized due to the fact that the terminal cannot acquire the initial transmission code rate is solved.
Optionally, the first receiving module 501 includes:
the first receiving submodule is used for receiving a control signaling for scheduling the initial transmission redundancy version sent by the base station, wherein the control signaling carries information for implicitly or displaying and indicating the initial transmission code rate.
Optionally, the first receiving sub-module includes:
and the first receiving unit is used for receiving the downlink control signaling of the scheduling primary transmission redundancy version sent by the base station.
Optionally, the method further includes:
a third receiving module, configured to receive, after the first receiving unit receives the downlink control signaling for scheduling the primary transmission redundancy version sent by the base station, the downlink control signaling for scheduling the retransmission redundancy versions other than the primary transmission redundancy version sent by the base station;
and the abandoning decoding module is used for abandoning other retransmission redundancy versions scheduled by the decoding downlink control signaling if the downlink control signaling of the primary transmission redundancy version is not correctly decoded and scheduled is detected.
Optionally, the first receiving sub-module includes:
and the second receiving unit is used for receiving the uplink control signaling of the scheduling primary transmission redundancy version sent by the base station.
Optionally, the first receiving sub-module includes:
and the third receiving unit is used for receiving a downlink control channel (PDCCH) of a scheduling initial transmission redundancy version sent by the base station, wherein the Modulation and Coding Strategy (MCS) in the PDCCH implicitly or displays and indicates the initial transmission code rate.
In the terminal of the embodiment of the invention, after the base station sends the control signaling indicating the initial transmission code rate to the terminal, if the control signaling transmission failure is detected, the control signaling indicating the initial transmission code rate is continuously sent to the terminal. The terminal can continue to receive the control signaling indicating the initial transmission code rate sent by the base station when the control signaling is failed to be received. Therefore, the terminal can successfully receive the control signaling indicating the initial transmission code rate, and the problem that the code block segmentation length cannot be determined or the HARQ cannot be realized due to the fact that the terminal cannot acquire the initial transmission code rate is solved.
It should be noted that, all the implementation manners in the foregoing data transmission method embodiment are applicable to the embodiment of the terminal, and the same technical effect can be achieved.
In some embodiments of the present invention, as illustrated with reference to fig. 6, there is also provided a terminal comprising a transceiver 610, a memory 620, a processor 600, a user interface 630, a bus interface and a computer program stored on said memory 620 and executable on said processor 600;
the transceiver 610 is configured to receive a control signaling indicating an initial transmission code rate sent by a base station;
the processor 600 is used for reading the program in the memory and executing the following processes: if the control signaling is successfully received, determining an initial transmission code rate according to the control signaling;
the transceiver 610 is further configured to continue to receive the control signaling indicating the initial transmission code rate sent by the base station if the control signaling is failed to be received.
Where in fig. 6, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 600 and memory represented by memory 620. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 610 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 630 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 600 in performing operations.
Optionally, the transceiver is further configured to receive a control signaling for scheduling an initial transmission redundancy version, where the control signaling carries information for implicitly or explicitly indicating an initial transmission code rate, where the information is sent by the base station.
Optionally, the transceiver is further configured to receive a downlink control signaling for scheduling the primary transmission redundancy version, where the downlink control signaling is sent by the base station.
Optionally, the transceiver is further configured to receive a downlink control signaling for scheduling a primary redundancy version, which is sent by the base station, and then receive downlink control signaling for scheduling other retransmission redundancy versions except the primary redundancy version, which is sent by the base station;
the processor is further configured to perform the following process: and if the downlink control signaling of the primary transmission redundancy version is not correctly decoded and scheduled is detected, other retransmission redundancy versions scheduled by the downlink control signaling are abandoned.
Optionally, the transceiver is further configured to receive an uplink control signaling for scheduling the primary transmission redundancy version, where the uplink control signaling is sent by the base station.
Optionally, the transceiver is further configured to receive a downlink control channel PDCCH for scheduling an initial transmission redundancy version, where the modulation and coding strategy MCS in the PDCCH implicitly or explicitly indicates an initial transmission code rate.
In some embodiments of the invention, there is also provided a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:
receiving a control signaling which indicates an initial transmission code rate and is sent by a base station;
if the control signaling is successfully received, determining an initial transmission code rate according to the control signaling;
and if the control signaling is failed to be received, continuing to receive the control signaling which indicates the initial transmission code rate and is sent by the base station.
Optionally, the program further implements the following steps when executed by the processor: and receiving a control signaling for scheduling the initial transmission redundancy version sent by the base station, wherein the control signaling carries information for implicitly or displaying and indicating the initial transmission code rate.
Optionally, the program further implements the following steps when executed by the processor: and receiving a downlink control signaling for scheduling the primary transmission redundancy version sent by the base station.
Optionally, the program further implements the following steps when executed by the processor: after receiving a downlink control signaling for scheduling a primary transmission redundancy version sent by a base station, receiving downlink control signaling for scheduling other retransmission redundancy versions except the primary transmission redundancy version sent by the base station; and if the downlink control signaling of the primary transmission redundancy version is not correctly decoded and scheduled is detected, other retransmission redundancy versions scheduled by the downlink control signaling are abandoned.
Optionally, the program further implements the following steps when executed by the processor: and receiving an uplink control signaling for scheduling the primary transmission redundancy version sent by the base station.
Optionally, the program further implements the following steps when executed by the processor: and receiving a downlink control channel (PDCCH) for scheduling the initial transmission redundancy version sent by the base station, wherein the Modulation and Coding Strategy (MCS) in the PDCCH implicitly or displays and indicates the initial transmission code rate.
In various embodiments of the present invention, it should be understood that the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (36)

1. A method of data transmission, comprising:
sending a control signaling indicating an initial transmission code rate to a terminal;
and if the control signaling transmission failure is detected, continuing to send a control signaling indicating the initial transmission code rate to the terminal.
2. The data transmission method according to claim 1, wherein the step of sending the control signaling indicating the initial transmission code rate to the terminal comprises:
and sending a control signaling for scheduling the initial transmission redundancy version to the terminal, wherein the control signaling carries information for implicitly or displaying and indicating the initial transmission code rate.
3. The data transmission method according to claim 2, wherein the step of sending the control signaling for scheduling the early redundancy version to the terminal comprises:
and sending a downlink control signaling for scheduling the primary transmission redundancy version to the terminal.
4. The data transmission method according to claim 3, wherein the step of continuing to send the control signaling indicating the initial transmission code rate to the terminal if the control signaling transmission failure is detected comprises:
and if the transmission failure of the downlink control signaling of the scheduling primary transmission redundancy version is detected, continuously sending the downlink control signaling of the scheduling primary transmission redundancy version to the terminal.
5. The data transmission method according to claim 3, wherein after sending the downlink control signaling for scheduling the primary redundancy version to the terminal, the method further comprises:
and if the fact that the downlink control signaling for scheduling the initial transmission redundancy version is successfully transmitted is detected, sending the downlink control signaling for scheduling other retransmission redundancy versions except the initial transmission redundancy version to the terminal.
6. The data transmission method according to claim 2, wherein the step of sending the control signaling for scheduling the early redundancy version to the terminal comprises:
and sending an uplink control signaling for scheduling the primary transmission redundancy version to the terminal.
7. The data transmission method according to claim 6, wherein the step of continuing to send the control signaling indicating the initial transmission code rate to the terminal if the control signaling transmission failure is detected comprises:
and if the uplink control signaling of the scheduling primary transmission redundancy version is detected to be failed to be transmitted, continuously sending the uplink control signaling of the scheduling primary transmission redundancy version to the terminal.
8. The data transmission method according to claim 7, wherein before the step of continuing to send the uplink control signaling of the scheduled early redundancy version to the terminal if it is detected that the uplink control signaling of the scheduled early redundancy version fails to be transmitted, the method further comprises:
detecting the power of a received signal;
and judging whether the uplink control signaling of the scheduling primary transmission redundancy version is successfully transmitted or not according to the power of the received signal.
9. The data transmission method according to claim 7, wherein before the step of continuing to send the uplink control signaling of the scheduled early redundancy version to the terminal if it is detected that the uplink control signaling of the scheduled early redundancy version fails to be transmitted, the method further comprises:
obtaining decoding results of all code blocks;
and judging whether the uplink control signaling of the scheduling primary transmission redundancy version is successfully transmitted or not according to the decoding results of all the code blocks.
10. The data transmission method according to claim 2, wherein the step of sending the control signaling for scheduling the early redundancy version to the terminal comprises:
and sending a downlink control channel (PDCCH) for scheduling the initial transmission redundancy version to a terminal, wherein the Modulation and Coding Strategy (MCS) in the PDCCH implicitly or displays and indicates the initial transmission code rate.
11. A base station, comprising:
the first sending module is used for sending a control signaling indicating the initial transmission code rate to the terminal;
and the second sending module is used for continuously sending the control signaling indicating the initial transmission code rate to the terminal if the control signaling transmission failure is detected.
12. A base station comprising a transceiver, a memory, a processor and a computer program stored on the memory and executable on the processor; it is characterized in that the preparation method is characterized in that,
the transceiver is used for sending a control signaling indicating an initial transmission code rate to the terminal;
the processor is used for reading the program in the memory and executing the following processes: and when the control signaling transmission failure is detected, the transceiver continuously sends the control signaling indicating the initial transmission code rate to the terminal.
13. The base station of claim 12,
the transceiver is further configured to send a control signaling for scheduling an initial transmission redundancy version to the terminal, where the control signaling carries information for implicitly or explicitly indicating an initial transmission code rate.
14. The base station of claim 13,
the transceiver is further configured to send a downlink control signaling for scheduling the preliminary transmission redundancy version to the terminal.
15. The base station of claim 14,
the processor is further configured to perform the following process: and when the transmission failure of the downlink control signaling of the scheduling initial transmission redundancy version is detected, the transceiver continuously sends the downlink control signaling of the scheduling initial transmission redundancy version to the terminal.
16. The base station of claim 14,
the processor is further configured to perform the following process: after the transceiver sends the downlink control signaling for scheduling the initial transmission redundancy version to the terminal, the transceiver sends the downlink control signaling for scheduling other retransmission redundancy versions except the initial transmission redundancy version to the terminal when detecting that the downlink control signaling for scheduling the initial transmission redundancy version is successfully transmitted.
17. The base station of claim 13,
the transceiver is further configured to send an uplink control signaling for scheduling the initial transmission redundancy version to the terminal.
18. The base station of claim 17,
the processor is further configured to perform the following process: and when the transmission failure of the uplink control signaling of the scheduling initial transmission redundancy version is detected, the transceiver continuously sends the uplink control signaling of the scheduling initial transmission redundancy version to the terminal.
19. The base station of claim 18,
the processor is further configured to perform the following process: detecting that the transmission of the uplink control signaling of the scheduling initial transmission redundancy version fails, and detecting the power of a received signal before the transceiver continuously sends the uplink control signaling of the scheduling initial transmission redundancy version to the terminal;
the processor is further configured to perform the following process: and judging whether the uplink control signaling of the scheduling primary transmission redundancy version is successfully transmitted or not according to the power of the received signal.
20. The base station of claim 18,
the processor is further configured to perform the following process: when the failure of the transmission of the uplink control signaling for scheduling the initial transmission redundancy version is detected, the transceiver acquires the decoding results of all code blocks before continuously sending the uplink control signaling for scheduling the initial transmission redundancy version to the terminal;
the processor is further configured to perform the following process: and judging whether the uplink control signaling of the scheduling primary transmission redundancy version is successfully transmitted or not according to the decoding results of all the code blocks.
21. The base station of claim 13,
the transceiver is further configured to send a downlink control channel PDCCH for scheduling an initial transmission redundancy version to the terminal, where the modulation and coding strategy MCS in the PDCCH implicitly or explicitly indicates an initial transmission code rate.
22. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the data transmission method according to any one of claims 1 to 10.
23. A method of data transmission, comprising:
receiving a control signaling which indicates an initial transmission code rate and is sent by a base station;
if the control signaling is successfully received, determining an initial transmission code rate according to the control signaling;
and if the control signaling is failed to be received, continuing to receive the control signaling which indicates the initial transmission code rate and is sent by the base station.
24. The data transmission method of claim 23, wherein the step of receiving the control signaling indicating the initial transmission code rate sent by the base station comprises:
and receiving a control signaling for scheduling the initial transmission redundancy version sent by the base station, wherein the control signaling carries information for implicitly or displaying and indicating the initial transmission code rate.
25. The data transmission method of claim 24, wherein the step of receiving the control signaling for scheduling the early redundancy version sent by the base station comprises:
and receiving a downlink control signaling for scheduling the primary transmission redundancy version sent by the base station.
26. The data transmission method according to claim 25, wherein after receiving the downlink control signaling for scheduling the primary redundancy version sent by the base station, the method further comprises:
receiving downlink control signaling which is sent by a base station and used for scheduling other retransmission redundancy versions except the primary transmission redundancy version;
and if the downlink control signaling of the primary transmission redundancy version is not correctly decoded and scheduled is detected, other retransmission redundancy versions scheduled by the downlink control signaling are abandoned.
27. The data transmission method of claim 24, wherein the step of receiving the control signaling for scheduling the early redundancy version sent by the base station comprises:
and receiving an uplink control signaling for scheduling the primary transmission redundancy version sent by the base station.
28. The data transmission method of claim 24, wherein the step of receiving the control signaling for scheduling the early redundancy version sent by the base station comprises:
and receiving a downlink control channel (PDCCH) for scheduling the initial transmission redundancy version sent by the base station, wherein the Modulation and Coding Strategy (MCS) in the PDCCH implicitly or displays and indicates the initial transmission code rate.
29. A terminal, comprising:
the first receiving module is used for receiving a control signaling which indicates an initial transmission code rate and is sent by a base station;
a determining module, configured to determine an initial transmission code rate according to the control signaling if the control signaling is successfully received;
and the second receiving module is used for continuously receiving the control signaling which indicates the initial transmission code rate and is sent by the base station if the control signaling is failed to be received.
30. A terminal comprising a transceiver, a memory, a processor and a computer program stored on the memory and executable on the processor; it is characterized in that the preparation method is characterized in that,
the transceiver is used for receiving a control signaling which indicates an initial transmission code rate and is sent by a base station;
the processor is used for reading the program in the memory and executing the following processes: if the control signaling is successfully received, determining an initial transmission code rate according to the control signaling;
the transceiver is further configured to continue to receive the control signaling indicating the initial transmission code rate sent by the base station if the control signaling is failed to be received.
31. The terminal of claim 30, wherein the transceiver is further configured to receive a control signaling for scheduling an initial transmission redundancy version sent by a base station, and the control signaling carries information indicating an initial transmission code rate implicitly or explicitly.
32. The terminal of claim 31, wherein the transceiver is further configured to receive downlink control signaling for scheduling the early redundancy version sent by the base station.
33. The terminal of claim 32, wherein the transceiver is further configured to receive downlink control signaling for scheduling retransmission redundancy versions other than the primary redundancy version sent by the base station after receiving the downlink control signaling for scheduling the primary redundancy version sent by the base station;
the processor is further configured to perform the following process: and if the downlink control signaling of the primary transmission redundancy version is not correctly decoded and scheduled is detected, other retransmission redundancy versions scheduled by the downlink control signaling are abandoned.
34. The terminal of claim 31, wherein the transceiver is further configured to receive uplink control signaling for scheduling the early redundancy version sent by the base station.
35. The terminal of claim 31, wherein the transceiver is further configured to receive a downlink control channel PDCCH for scheduling an initial transmission redundancy version sent by a base station, and wherein the modulation and coding scheme MCS in the PDCCH implicitly or explicitly indicates an initial transmission code rate.
36. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, is characterized by a data transmission method according to one of claims 23 to 28.
CN201710808037.0A 2017-09-08 2017-09-08 Data transmission method, base station and terminal Active CN109474382B (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101616442A (en) * 2008-06-23 2009-12-30 华为技术有限公司 Method for transmitting uplink data, terminal installation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN101291199B (en) * 2007-04-20 2011-03-09 大唐移动通信设备有限公司 Method and apparatus for detecting correctness of feedback message in hybrid automatic retransmission request
CN101399582B (en) * 2007-09-25 2012-11-21 电信科学技术研究院 Method and system for regulating block duplicate spreading diversity schema
CN101137098A (en) * 2007-09-28 2008-03-05 中兴通讯股份有限公司 Uplink real-time packet service transmission method
CN102111252B (en) * 2009-12-25 2014-03-19 中兴通讯股份有限公司南京分公司 Hybrid automatic repeat request-based repeat resource distribution method
US9673920B2 (en) * 2012-12-18 2017-06-06 Department 13, LLC Intrusion detection and radio fingerprint tracking

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101616442A (en) * 2008-06-23 2009-12-30 华为技术有限公司 Method for transmitting uplink data, terminal installation

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