CN106559185B - Data sending control method and mobile terminal - Google Patents

Data sending control method and mobile terminal Download PDF

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Publication number
CN106559185B
CN106559185B CN201510642323.5A CN201510642323A CN106559185B CN 106559185 B CN106559185 B CN 106559185B CN 201510642323 A CN201510642323 A CN 201510642323A CN 106559185 B CN106559185 B CN 106559185B
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data
mobile terminal
data transmission
bit
control method
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CN106559185A (en
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蒋丽萍
秦信江
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867Arrangements specially adapted for the transmitter end
    • H04L1/1874Buffer management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607Details of the supervisory signal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829Arrangements specially adapted for the receiver end
    • H04L1/1835Buffer management

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

Abstract

The invention discloses a data transmission control method and a mobile terminal, and belongs to the technical field of mobile terminals. The method comprises the following steps: setting an indicating unit, wherein the indicating unit comprises a default initial state and a normal state; the following steps are then performed: step S1, the mobile terminal moves the data to be sent related to the current data sending process to the system cache of the mobile terminal, and sets the indicating unit to be in a normal state after the moving operation of all the data to be sent is completed; step S2, the mobile terminal judges the indication unit before the uplink channel coding is carried out to the data to be sent, and turns to step S3 when the indication unit is in the initial state; the mobile terminal stops the current data transmission process, step S3, and then exits. The beneficial effects of the above technical scheme are: the method and the device realize the early discovery of the invalid data, and avoid the problems of increasing data transmission delay and reducing data transmission efficiency caused by the transmission of the invalid data.

Description

Data sending control method and mobile terminal
Technical Field
The present invention relates to the field of mobile terminal technologies, and in particular, to a data transmission control method and a mobile terminal.
Background
In the current enhanced High-Speed Packet Access (High-Speed Packet Access +, HSPA +) or Long Term Evolution (LTE), when a User Equipment (UE) transmits data to a base station (eNodeB), some invalid data may be encountered. The invalid data is difficult to correct in the data sending process or the data retransmission process, so that the problem that the correct data cannot be transmitted to the base station side even if the data retransmission operation is performed for multiple times in time occurs, the data transmission delay is increased, and the data transmission efficiency is reduced.
Disclosure of Invention
According to the above problems in the prior art, a technical solution for a data transmission control method and a mobile terminal is provided, which aims to realize the early discovery of invalid data and avoid the problems of increasing data transmission delay and reducing data transmission efficiency caused by the transmission of invalid data.
The technical scheme specifically comprises the following steps:
a data transmission control method is suitable for a mobile terminal; setting an indicating unit, wherein the indicating unit comprises a default initial state and a normal state;
the data transmission control method specifically comprises the following steps:
step S1, the mobile terminal moves the data to be sent related to the current data sending process to a system cache of the mobile terminal, and sets the indication unit to be in the normal state after completing the moving operation of all the data to be sent;
step S2, before performing uplink channel coding on the data to be sent, the mobile terminal determines the indication unit, and goes to step S3 when the indication unit is in the initial state;
in step S3, the mobile terminal stops the current data transmission process and then exits.
Preferably, in the data transmission control method, in step S2, if the instruction means is in the normal state, the following steps are performed:
step S21, setting the indicating unit to the initial state;
step S22, performing the uplink channel coding on the data to be transmitted;
and step S23, sending the encoded data to be sent to the base station side, and then exiting.
Preferably, the data transmission control method, wherein the indication unit includes an indication bit;
if the value of the indication bit is TRUE, the indication unit is in the normal state;
and if the value of the indicating bit is FALSE, indicating that the indicating unit is in the initial state.
Preferably, the data transmission control method, wherein the indication unit includes a first count bit and a second count bit;
the first count bit and the second count bit have the same initial zero bit;
if the count value in the first count bit is greater than the count value in the second count bit, the indicating unit is in the normal state;
and if the count value in the first count bit is not greater than the count value in the second count bit, indicating that the indicating unit is in the initial state.
Preferably, in the data transmission control method, in step S1, after the moving operation of all the data to be transmitted is completed, the count value in the first count bit is incremented by 1.
Preferably, in the data transmission control method, in step S21, if the indication unit is in the normal state, the count value in the second count bit is incremented by 1, and then step S22 is executed.
Preferably, in the data transmission control method, in step S1, the indication unit is set to be in the initial state before the data to be transmitted is moved.
Preferably, in the data transmission control method, in step S1, before the data to be transmitted is moved, the value of the indicator bit is set to FALSE.
Preferably, in the data transmission control method, in step S1, before the data to be transmitted is moved, the count value of the first count bit and the count value of the second count bit are respectively set to the initial zero bits.
Preferably, in the data transmission control method, the mobile terminal operates based on an HSPA + communication system.
Preferably, in the data transmission control method, the mobile terminal operates based on an LTE communication system.
A mobile terminal, wherein, the data transmission control method is adopted.
The beneficial effects of the above technical scheme are: the data transmission control method can realize the early discovery of invalid data, and avoid the problems of increasing data transmission delay and reducing data transmission efficiency caused by the transmission of the invalid data.
Drawings
Fig. 1-2 are flow charts illustrating a data transmission control method according to a preferred embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
In the prior art, in the HSPA +/LTE communication system, when a mobile terminal transmits data to a base station side, a Hybrid Automatic Repeat reQuest (HARQ) technology is generally adopted. The HARQ technology is: the mobile terminal sends data to the base station side, the base station side carries out processing procedures such as CRC (cyclic redundancy check) and the like on the received data, and returns a feedback message ACK/NACK to the mobile terminal after the check is finished. If the feedback message received by the mobile terminal is ACK, the base station side is indicated to successfully receive the data, and the mobile terminal can end the data sending process; if the mobile terminal receives the feedback message, NACK indicates that the base station side fails to receive the data, and the mobile terminal needs to start a data retransmission process, that is, resends the data to the base station side.
In the prior art, at the mobile terminal side, the data transmission process generally includes two processes of putting data to be transmitted into a system Buffer (Buffer) according to a certain sequence and flow, and reading the data to be transmitted from the system Buffer and performing uplink coding. The two processes are usually performed independently and in a time sequence. The process of placing data to be sent into the system cache is usually accompanied by the process of moving other data on the system bus. If there are some other data whose timing priority for moving is higher than that of the data to be transmitted (i.e. the moving of the data to be transmitted encounters a larger system bus data block), or if the moving operation of the data to be transmitted is increased due to other delay factors (delay), it may happen that the moving operation of the data to be transmitted is not completely completed when the upstream coding starts, and the data in the current system cache may be left data (old data) left by the previous data transmission operation, or may be null (i.e. null data), such data is called invalid data. If invalid data is sent to the base station side, no matter how the data to be sent is combined at the base station side in the following data retransmission operation, the CRC check is difficult to pass, that is, the whole data sending process is difficult to succeed, and even possibly, multiple data retransmission operations are triggered, so that more system resources are consumed.
Therefore, in a preferred embodiment of the present invention, based on the above problems in the prior art, a data transmission control method is provided, which is suitable for a mobile terminal. Specifically, in a preferred embodiment of the present invention, the data transmission control method is applied to an HSPA + communication system or an LTE communication system.
In a preferred embodiment of the present invention, in the data transmission control method, an indication unit is first set, and the indication unit includes a default initial state and a normal state. That is, in the preferred embodiment of the present invention, the indicating unit is in the initial state by default, and in the normal state in some other cases. The status change of the indicating unit and the content of the corresponding indication will be described in detail below.
In a preferred embodiment of the present invention, as shown in fig. 1, the data transmission control method specifically includes:
step S1, the mobile terminal moves the data to be sent related to the current data sending process to the system cache of the mobile terminal, and sets the indicating unit to be in a normal state after the moving operation of all the data to be sent is completed;
in a preferred embodiment of the present invention, as mentioned above, the indication unit includes an initial state and a normal state. When the above-described indicating unit is initialized, it is in an initial state, and is set to a normal state in some cases.
Specifically, in the preferred embodiment of the present invention, in the step S1, before the data to be sent is moved, the state of the indication unit is first reset to the initial state, that is, the indication unit is initialized, so as to avoid the influence of the previous setting on the indication unit. Then, the mobile terminal moves the data to be sent, and correspondingly adjusts the state of the indication unit:
1) if all the data to be sent finish the moving operation, setting the state of the indicating unit to be in a normal state;
2) if the data to be sent does not finish the moving operation, the indicating unit is kept in an initialized state.
Therefore, in the preferred embodiment of the present invention, it can be determined whether the data to be sent has been moved completely by changing the current state of the indication unit.
In the preferred embodiment of the present invention, the specific setting manner of the state of the indicating unit is described in detail below.
Step S2, the mobile terminal judges the indication unit before the uplink channel coding is carried out to the data to be sent, and turns to step S3 when the indication unit is in the initial state;
in a preferred embodiment of the present invention, in the step S2, before performing uplink channel coding on the data to be sent in the system buffer, the mobile terminal first extracts the indication unit and queries the current state of the indication unit:
1) if the indication unit is currently in the initial state, it indicates that the data to be sent is not moved completely (if the data to be sent is moved completely, the indication unit is set to be in the normal state), and the mobile terminal stops the current data sending process and exits.
2) If the indication unit is currently in a normal state, it indicates that the data to be sent is moved completely, and the mobile terminal continues to execute the current data sending process, that is, as shown in fig. 2, the following steps are executed:
step S21, setting the indicating unit to be in an initial state;
in a preferred embodiment of the present invention, if the indication unit is determined to be in the normal state before the uplink channel coding is performed, the indication unit is first reset to be in the initial state before the uplink channel coding is performed.
Step S22, carrying out uplink channel coding on the data to be transmitted;
and step S23, sending the encoded data to be sent to the base station side, and then exiting.
Therefore, in the preferred embodiment of the present invention, after the current data transmission process is completed, the current state of the indication unit is the initial state, and the next data transmission process is waited to return to the step S1 to perform the corresponding operation.
The mobile terminal stops the current data transmission process, step S3, and then exits.
In summary, in the technical solution of the present invention, an indication unit is preset, and the indication unit includes two states: an initial state and a normal state. If the current indication unit is in a normal state, the current indication unit indicates that corresponding data to be sent related to the current data sending process are all moved to a system cache; and if the current indicating unit is in the initial state, indicating that the corresponding data to be sent related to the current data sending process has not completed the moving operation. Therefore, in the technical scheme of the invention, the state of the indicating unit is set according to the moving condition in the data moving process, before the uplink channel coding is carried out, the state of the indicating unit is judged firstly, the current data sending process is stopped when the indicating unit is still in the initial state, and the current data sending process is continued when the indicating unit is in the normal state.
Hereinafter, the state setting of the indicating unit is described in detail.
1) In a preferred embodiment of the present invention, the indication unit includes an indication bit;
if the value of the indication bit is TRUE, the indication unit is in a normal state;
if the value of the indication bit is FALSE, it indicates that the indication unit is in the initial state.
Then in this embodiment, the value of the indicator bit is first set to FALSE before the data move operation.
And when the data to be sent related to the current data sending process is completely moved, setting the indication bit to TRUE. Correspondingly, if the data to be transmitted does not complete the shift operation, the value of the indication bit is kept unchanged.
In this embodiment, before the mobile terminal prepares to perform uplink channel coding on data to be sent in the system buffer, the value of the indicator bit is read first, and the current state of the indicator unit is determined according to the value of the indicator bit:
if the value of the indication bit is FALSE, it indicates that the indication unit is currently in the initial state, i.e. before the uplink channel coding starts, the data transfer operation is not completely completed. At this time, the mobile terminal actively stops the current data transmission process.
If the value of the indicator bit is TRUE, it indicates that the indicator unit is currently in a normal state, that is, before the uplink channel coding starts, the data moving operation is completed, and at this time, the mobile terminal continues to perform the current data transmission process, that is, completes the uplink channel coding, and then transmits the coded data to be transmitted to the base station for measurement.
In this embodiment, if the mobile terminal determines that the value of the indicator bit is TRUE before the uplink channel coding, the mobile terminal resets the value of the indicator bit to FALSE while starting the uplink channel coding.
2) In another preferred embodiment of the present invention, the indicating unit includes a first counting bit and a second counting bit;
the first count bit and the second count bit have the same initial zero bit;
if the count value in the first counting bit is larger than the count value in the second counting bit, the indicating unit is in a normal state;
if the count value in the first count bit is not greater than the count value in the second count bit, the indicating unit is in an initial state.
Then in this embodiment, both the first count bit and the second count bit are first set to the initial zero bit prior to the data move operation.
When the data to be sent related to the current data sending process are all moved, the mobile terminal adds 1 to the value of the first counting bit;
in this embodiment, before the mobile terminal prepares to perform uplink channel coding on data to be sent in the system buffer, the values of the first count bit and the second count bit are first read, and the current state of the indication unit is determined according to the relationship between the values of the two count bits:
if the value of the first counting bit is not larger than that of the second counting bit, it indicates that the indication unit is currently in the initial state, i.e. before the uplink channel coding starts, the data moving operation is not completely completed. At this time, the mobile terminal actively stops the current data transmission process.
If the value of the first counting bit is greater than that of the second counting bit, it indicates that the indication unit is currently in a normal state, that is, before the uplink channel coding starts, the data moving operation is completed, at this time, the mobile terminal continues to perform the current data transmission process, that is, completes the uplink channel coding, and then transmits the coded data to be transmitted to the base station for testing.
In this embodiment, if the mobile terminal determines that the value of the first counting bit is greater than the value of the second counting bit before the uplink channel coding, the mobile terminal adds 1 to the value of the second counting bit while starting the uplink channel coding, so as to eliminate a difference between the value of the first counting bit and the value of the second counting bit.
The above two embodiments are only for describing how to determine whether the data moving operation of the mobile terminal is completed before performing the uplink channel coding by using different states of the indication unit in the technical solution of the present invention, that is, determine whether invalid data exists in the data to be transmitted corresponding to the current coding. In other embodiments of the present invention, other manners may also be adopted to implement the setting and switching before the different states of the indication unit, so as to achieve the above-mentioned purpose. Any modifications and variations based on the above technical solutions by those skilled in the art are included in the protective scope of the present invention.
In a preferred embodiment of the present invention, there is also provided a mobile terminal, wherein the data transmission control method described above is adopted.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.

Claims (12)

1. A data transmission control method is suitable for a process that a mobile terminal transmits data to a base station, the mobile terminal is applied to an HSPA + network or an LTE network, and the mobile terminal transmits communication data to the base station by adopting an HARQ technology; the method is characterized in that an indicating unit is set, and the indicating unit comprises a default initial state and a normal state;
the data transmission control method specifically comprises the following steps:
step S1, the mobile terminal moves the data to be sent related to the current data sending process to a system cache of the mobile terminal, and sets the indication unit to be in the normal state after completing the moving operation of all the data to be sent;
step S2, before performing uplink channel coding on the data to be sent, the mobile terminal determines the indication unit, and goes to step S3 when the indication unit is in the initial state;
in step S3, the mobile terminal stops the current data transmission process and then exits.
2. The data transmission control method according to claim 1, wherein in step S2, if the instruction means is in the normal state, the following steps are performed:
step S21, setting the indicating unit to the initial state;
step S22, performing the uplink channel coding on the data to be transmitted;
and step S23, sending the encoded data to be sent to the base station side, and then exiting.
3. The data transmission control method according to claim 1, wherein the indication unit includes an indication bit;
if the value of the indication bit is TRUE, the indication unit is in the normal state;
and if the value of the indicating bit is FALSE, indicating that the indicating unit is in the initial state.
4. The data transmission control method according to claim 2, wherein the indication unit includes a first count bit and a second count bit;
the first count bit and the second count bit have the same initial zero bit;
if the count value in the first count bit is greater than the count value in the second count bit, the indicating unit is in the normal state;
and if the count value in the first count bit is not greater than the count value in the second count bit, indicating that the indicating unit is in the initial state.
5. The data transmission control method according to claim 4, wherein in step S1, after the moving operation of all the data to be transmitted is completed, 1 is added to the count value in the first count bit.
6. The data transmission control method of claim 4, wherein in the step S21, if the indication unit is in the normal state, the count value in the second count bit is increased by 1, and then the step S22 is performed.
7. The data transmission control method according to claim 1, wherein in step S1, the indication unit is set to be in the initial state before the data to be transmitted is moved.
8. The data transmission control method according to claim 3, wherein in step S1, before the data to be transmitted is moved, the value of the indicator bit is set to FALSE.
9. The data transmission control method according to claim 4, wherein in step S1, before the data to be transmitted is moved, the count value of the first count bit and the count value of the second count bit are respectively set to the initial zero bits.
10. The data transmission control method according to claim 1, wherein the mobile terminal operates based on a HSPA + communication system.
11. The data transmission control method according to claim 1, wherein the mobile terminal operates based on an LTE communication system.
12. A mobile terminal characterized by employing the data transmission control method according to any one of claims 1 to 11.
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