CN106375069B - Data repeating method and device - Google Patents
Data repeating method and device Download PDFInfo
- Publication number
- CN106375069B CN106375069B CN201510435141.0A CN201510435141A CN106375069B CN 106375069 B CN106375069 B CN 106375069B CN 201510435141 A CN201510435141 A CN 201510435141A CN 106375069 B CN106375069 B CN 106375069B
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- China
- Prior art keywords
- data
- transmitted
- pdu
- section
- retransmitted
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/187—Details of sliding window management
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1896—ARQ related signaling
Abstract
The invention discloses a kind of data repeating method and devices, are related to field of communication technology, which comprises when needing to retransmit at least one data sectional in protocol Data Unit PDU to be transmitted, are adjusted according to the data sectional to section is retransmitted；Segment transmissions are carried out to the data for retransmitting section in the PDU to be transmitted.The present invention is adjusted by data sectional to section is retransmitted, segment transmissions are carried out to the data for retransmitting section in the PDU to be transmitted, only need to safeguard a re-transmission section, reduce the complexity of retransmission process, and avoid entire PDU retransmission processes and reach maximum retransmission, it is therefore prevented that data transmission fails.
Description
Technical field
The present invention relates to field of communication technology, in particular to a kind of data repeating method and device.
Background technique
The affirmation mode (Acknowledged Mode, AM) of wireless spread-spectrum technology (Radio Link Control, RLC)
In data transmission procedure, when being retransmitted due to automatic repeat request (Automatic Repeat Request, ARQ), media interviews
Control (Media Access Control, MAC) scheduling size changes at random leads to re-segmenting protocol Data Unit (Protocol
Data Unit, PDU) length arbitrarily changes, and it is handled according to state report and retransmits re-segmenting PDU there are sizes scenes, retransmitted
Processing is complicated, and entire PDU retransmission processes are easy to reach maximum retransmission, and then lead to data transmission fails.
Summary of the invention
To reduce retransmission process complexity, and data transmission fails are prevented, the present invention provides a kind of data repeating method,
The described method includes:
When needing to retransmit at least one data sectional in protocol Data Unit PDU to be transmitted, according to the data point
Section is adjusted to section is retransmitted；
Segment transmissions are carried out to the data for retransmitting section in the PDU to be transmitted.
Wherein, described to be adjusted according to the data sectional to section is retransmitted, further comprise:
Using the minimum value of the starting position in the data sectional as the minimum value for retransmitting section, by the data
The maximum value of end position in segmentation is as the maximum value for retransmitting section.
Wherein, described that segment transmissions are carried out to the data for retransmitting section in the PDU to be transmitted, further comprise:
Segment transmissions are carried out by way of delay transmission to the data for retransmitting section in the PDU to be transmitted.
Wherein, described when needing to retransmit at least one data sectional in protocol Data Unit PDU to be transmitted, according to institute
Data sectional is stated to retransmitting before section is adjusted, the method also includes:
It receives in wireless spread-spectrum technology RLC poll retransmission timer time-out or for the first time non-really comprising the PDU to be transmitted
When the state report recognized, the data between starting position and re-transmission end position that retransmit of the PDU record to be transmitted are carried out
It retransmits.
Wherein, described to receive in wireless spread-spectrum technology RLC poll retransmission timer time-out or for the first time comprising described to be passed
When the state report of defeated PDU non-acknowledgement, by the re-transmission starting position of the PDU record to be transmitted and retransmit between end position
Before data are retransmitted, the method also includes:
When the PDU to be transmitted is transmitted for the first time, the re-transmission starting position is recorded as to the starting of the PDU to be transmitted
Place, and the re-transmission end position is recorded as at the ending of the PDU to be transmitted.
The invention also discloses a kind of data retransmission device, described device includes:
Section adjustment unit, for needing to retransmit at least one data sectional in protocol Data Unit PDU to be transmitted
When, it is adjusted according to the data sectional to section is retransmitted；
Segment transmissions unit, for carrying out segment transmissions to the data for retransmitting section in the PDU to be transmitted.
Wherein, the section adjustment unit is further used for making the minimum value of the starting position in the data sectional
For it is described retransmit section minimum value, most using the maximum value of the end position in the data sectional as the re-transmission section
Big value.
Wherein, the segment transmissions unit is further used for passing through the data for retransmitting section in the PDU to be transmitted and prolong
The mode transmitted late carries out segment transmissions.
Wherein, the method also includes:
Determination unit is retransmitted, for receiving in wireless spread-spectrum technology RLC poll retransmission timer time-out or for the first time and including
When the state report of the PDU non-acknowledgement to be transmitted, by the re-transmission starting position of the PDU record to be transmitted and stop bits is retransmitted
Data between setting are retransmitted.
Wherein, the method also includes:
Position recording unit, for when the PDU to be transmitted is transmitted for the first time, the re-transmission starting position to be recorded as institute
The section start of PDU to be transmitted is stated, and the re-transmission end position is recorded as at the ending of the PDU to be transmitted.
The present invention is adjusted by data sectional to section is retransmitted, to the data for retransmitting section in the PDU to be transmitted
Carry out segment transmissions, it is only necessary to safeguard a re-transmission section, reduce the complexity of retransmission process, and avoid entire PDU
Retransmission processes reach maximum retransmission, it is therefore prevented that data transmission fails.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is the flow chart of the data repeating method of one embodiment of the present invention；
Fig. 2 is the flow chart of the data repeating method of one embodiment of the present invention；
Fig. 3 is the structural block diagram of the data retransmission device of one embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
Fig. 1 is the flow chart of the data repeating method of one embodiment of the present invention；Referring to Fig.1, which comprises
S101: when needing to retransmit at least one data sectional in protocol Data Unit PDU to be transmitted, according to the number
It is adjusted according to segmentation to section is retransmitted；
It should be noted that at least one data sectional can be regarded as a data sectional or multiple data sectionals, it is described
It is multiple to be interpreted as more than two (including two).
To be conveniently adjusted the re-transmission section, in present embodiment, by the minimum of the starting position in the data sectional
It is worth as the minimum value for retransmitting section, using the maximum value of the end position in the data sectional as the re-transmission section
Maximum value.
Assuming that need to retransmit there are five the data sectionals in PDU to be transmitted, data sectional is respectively 100~200,300~
350,400~450,500~600,700~800, in the prior art, then this five data sectionals can only be tieed up respectively
The complexity of shield, processing is higher, since the segmentation of maintenance is more, is very easy to mistake, this implementation occur in maintenance process
In mode, then according to the above process, most as the re-transmission section by the starting position minimum value 100 in the data sectional
Small value, by the starting position maximum value 800 in the data sectional as the maximum value for retransmitting section, so, it is only necessary to
This re-transmission section of maintenance 100~800.
In addition, this data for retransmitting sections is continuous due to 100~800, so, when retransmitting, then can by compared with
It is retransmitted for efficient mode, for example, can carry out 100~800 points for 100~500,500~800 the two data sectionals
It retransmits, will not be retransmitted according to above-mentioned five data sectionals, so that effectively preventing entire PDU retransmission processes reaches maximum weight
Pass number, it is therefore prevented that data transmission fails.
S102: segment transmissions are carried out to the data for retransmitting section in the PDU to be transmitted.
It will be appreciated that since network may be temporary disconnection, such as: after motion of mobile terminals to larger veil
Side, so, data can not be received whithin a period of time, if in segment transmissions then may by continuously transmitting incessantly
So that the mobile terminal is quickly reached maximum retransmission, causes the mobile terminal turn-off data to connect, asked to avoid the occurrence of this
It inscribes, in present embodiment, step S102 further comprises:
Segment transmissions are carried out by way of delay transmission to the data for retransmitting section in the PDU to be transmitted.
Certainly, segment transmissions can be carried out in such a way that a variety of delays are transmitted, such as: each secondary data are retransmitted and are carried out in advance
If the delay of time, and or the data of preset times are retransmitted to the delay for carrying out preset time, in present embodiment, will retransmit
The the 1st~8,13~16,27~32 time in the process is prolonged during retransmitting the 9th~12,17~21 time every time without delay
It is retransmitted after slow 4 dispatching cycles, is carried out again after postponing 2 dispatching cycles every time during retransmitting the 22nd~26 time again
It retransmits, and then farthest reduces the generation that RLC reaches maximum retransmission.
Present embodiment is adjusted by data sectional to section is retransmitted, to re-transmission section in the PDU to be transmitted
Data carry out segment transmissions, it is only necessary to safeguard a re-transmission section, reduce the complexity of retransmission process, and avoid entire
PDU retransmission processes reach maximum retransmission, it is therefore prevented that data transmission fails.
Fig. 2 is the flow chart of the data repeating method of one embodiment of the present invention；Referring to Fig. 2, which comprises
S201: when the PDU to be transmitted is transmitted for the first time, the re-transmission starting position is recorded as the PDU to be transmitted
Section start, and the re-transmission end position is recorded as at the ending of the PDU to be transmitted；
Assuming that the entire data segment of the PDU to be transmitted is 0~1000, in this step, by the re-transmission starting position
It is recorded as 0, the re-transmission end position is recorded as 1000.
S202: it receives in wireless spread-spectrum technology RLC poll retransmission timer time-out or for the first time comprising the PDU to be transmitted
When the state report of non-acknowledgement, by the data of the PDU record to be transmitted retransmitted between starting position and re-transmission end position
It is retransmitted；
It should be noted that being retransmitted if scheduling size is less than PDU size to be transmitted according to length real-time update is retransmitted
Starting position.
S203: when needing to retransmit at least one data sectional in protocol Data Unit PDU to be transmitted, according to the number
It is adjusted according to segmentation to section is retransmitted；
S204: segment transmissions are carried out to the data for retransmitting section in the PDU to be transmitted.
It should be noted that step S203~S204 is identical as step S101~S102 of embodiment shown in FIG. 1,
This is repeated no more.
Fig. 3 is the structural block diagram of the data retransmission device of one embodiment of the present invention；Referring to Fig. 3, described device includes:
Section adjustment unit 301, for needing to retransmit at least one data in protocol Data Unit PDU to be transmitted point
Duan Shi is adjusted according to the data sectional to section is retransmitted；
Segment transmissions unit 302, for carrying out segment transmissions to the data for retransmitting section in the PDU to be transmitted.
Optionally, the section adjustment unit is further used for the minimum value of the starting position in the data sectional
As the minimum value for retransmitting section, using the maximum value of the end position in the data sectional as the re-transmission section
Maximum value.
Optionally, the segment transmissions unit is further used for passing through the data for retransmitting section in the PDU to be transmitted
The mode of delay transmission carries out segment transmissions.
Optionally, the method also includes:
Determination unit is retransmitted, for receiving in wireless spread-spectrum technology RLC poll retransmission timer time-out or for the first time and including
When the state report of the PDU non-acknowledgement to be transmitted, by the re-transmission starting position of the PDU record to be transmitted and stop bits is retransmitted
Data between setting are retransmitted.
Optionally, the method also includes:
Position recording unit, for when the PDU to be transmitted is transmitted for the first time, the re-transmission starting position to be recorded as institute
The section start of PDU to be transmitted is stated, and the re-transmission end position is recorded as at the ending of the PDU to be transmitted.
For device embodiments, since it is substantially similar to method implementation, so be described relatively simple,
Related place illustrates referring to the part of method implementation.
It should be noted that in all parts of the device of the invention, according to the function that it to be realized to therein
Component has carried out logical partitioning, and still, the present invention is not only restricted to this, can according to need all parts are repartitioned or
Person's combination for example, can be single component by some component combinations, or some components can be further broken into more
Subassembly.
All parts embodiment of the invention can be implemented in hardware, or to transport on one or more processors
Capable software module is realized, or is implemented in a combination thereof.It will be understood by those of skill in the art that can make in practice
With some or complete in microprocessor or digital signal processor (DSP) Lai Shixian according to the present invention device of embodiment
The some or all functions of portion's component.The present invention be also implemented as a part for executing method as described herein or
The device or device program (for example, computer program and computer program product) of person's whole.Such realization is of the invention
Program can store on a computer-readable medium, or may be in the form of one or more signals.Such signal
It can be downloaded from an internet website to obtain, be perhaps provided on the carrier signal or be provided in any other form.
It should be noted that illustrate the present invention rather than limit it for above embodiment, and this
Field technical staff can be designed replacement embodiment without departing from the scope of the appended claims.In claim
In, any reference symbol between parentheses should not be configured to limitations on claims.Word "comprising" is not excluded for depositing
In element or step not listed in the claims.Word "a" or "an" located in front of the element do not exclude the presence of it is multiple this
The element of sample.The present invention can by means of include several different elements hardware and by means of properly programmed computer come
It realizes.In the unit claims listing several devices, several in these devices can be through the same hardware
It embodies.The use of word first, second, and third does not indicate any sequence.These words can be construed to
Title.
The above embodiments are only used to illustrate the present invention, and not limitation of the present invention, in relation to the common of technical field
Technical staff can also make a variety of changes and modification without departing from the spirit and scope of the present invention, therefore all
Equivalent technical solution also belongs to scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (6)
1. a kind of data repeating method, which is characterized in that the described method includes:
When needing to retransmit at least one data sectional in protocol Data Unit PDU to be transmitted, according to the data sectional pair
Section is retransmitted to be adjusted；It is described to be adjusted to section is retransmitted according to the data sectional and include:
Using the minimum value of the starting position in the data sectional as the minimum value for retransmitting section, by the data sectional
In end position maximum value as it is described retransmit section maximum value；
Segment transmissions are carried out to the data for retransmitting section in the PDU to be transmitted；It is described to retransmitting section in the PDU to be transmitted
Data carry out segment transmissions include:
Segment transmissions are carried out by way of delay transmission to the data for retransmitting section in the PDU to be transmitted.
2. the method as described in claim 1, which is characterized in that described in needing to retransmit protocol Data Unit PDU to be transmitted
At least one data sectional when, according to the data sectional to retransmitting before section is adjusted, the method also includes:
It receives in wireless spread-spectrum technology RLC poll retransmission timer time-out or for the first time comprising the PDU non-acknowledgement to be transmitted
When state report, the data between the re-transmission starting position and re-transmission end position of the PDU record to be transmitted are retransmitted.
3. method according to claim 2, which is characterized in that described super in wireless spread-spectrum technology RLC poll retransmission timer
When or when receiving the state report comprising the PDU non-acknowledgement to be transmitted for the first time, the re-transmission of the PDU to be transmitted record is opened
Beginning position and retransmit end position between data retransmitted before, the method also includes:
When the PDU to be transmitted is transmitted for the first time, the re-transmission starting position is recorded as to the section start of the PDU to be transmitted,
And the re-transmission end position is recorded as at the ending of the PDU to be transmitted.
4. a kind of data retransmission device, which is characterized in that described device includes:
Section adjustment unit, for when needing to retransmit at least one data sectional in protocol Data Unit PDU to be transmitted, root
It is adjusted according to the data sectional to section is retransmitted；The section adjustment unit, being further used for will be in the data sectional
Starting position minimum value as it is described retransmit section minimum value, by the maximum value of the end position in the data sectional
As the maximum value for retransmitting section；
Segment transmissions unit, for carrying out segment transmissions to the data for retransmitting section in the PDU to be transmitted；The segment transmissions
Unit is further used for carrying out segment transmissions by way of delay transmission to the data for retransmitting section in the PDU to be transmitted.
5. device as described in any of claims 4, which is characterized in that described device further include:
Determination unit is retransmitted, for receiving in wireless spread-spectrum technology RLC poll retransmission timer time-out or for the first time comprising described
When the state report of PDU non-acknowledgement to be transmitted, by the re-transmission starting position of the PDU to be transmitted record and retransmit end position it
Between data retransmitted.
6. device as claimed in claim 5, which is characterized in that described device further include:
Position recording unit, for when the PDU to be transmitted is transmitted for the first time, by the re-transmission starting position be recorded as it is described to
The section start of PDU is transmitted, and the re-transmission end position is recorded as at the ending of the PDU to be transmitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510435141.0A CN106375069B (en) | 2015-07-22 | 2015-07-22 | Data repeating method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510435141.0A CN106375069B (en) | 2015-07-22 | 2015-07-22 | Data repeating method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106375069A CN106375069A (en) | 2017-02-01 |
| CN106375069B true CN106375069B (en) | 2019-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510435141.0A Expired - Fee Related CN106375069B (en) | 2015-07-22 | 2015-07-22 | Data repeating method and device |
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| CN (1) | CN106375069B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109547167B (en) * | 2017-08-02 | 2022-03-29 | 华为技术有限公司 | Counting method and communication device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101931516B (en) * | 2009-06-25 | 2013-03-20 | 中兴通讯股份有限公司 | Quick-retransmission method and device in wireless chain control layer determination mode |
| US8473825B2 (en) * | 2009-08-13 | 2013-06-25 | Research In Motion Limited | Evolved universal terrestrial radio access acknowledged mode radio link control status report for segmented protocol data units |
| CN102201901A (en) * | 2010-03-22 | 2011-09-28 | 中兴通讯股份有限公司 | Data retransmission method and device |
| CN101895372B (en) * | 2010-06-29 | 2013-04-03 | 中国科学院计算技术研究所 | Data transmission method in radio link control layer acknowledged mode |
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