CN102137441A - method, device and system for data transmission - Google Patents
method, device and system for data transmission Download PDFInfo
- Publication number
- CN102137441A CN102137441A CN2010106006785A CN201010600678A CN102137441A CN 102137441 A CN102137441 A CN 102137441A CN 2010106006785 A CN2010106006785 A CN 2010106006785A CN 201010600678 A CN201010600678 A CN 201010600678A CN 102137441 A CN102137441 A CN 102137441A
- Authority
- CN
- China
- Prior art keywords
- pdu
- data
- received
- retransmission
- indicates
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000005540 biological transmission Effects 0.000 title claims abstract description 40
- 238000012545 processing Methods 0.000 claims description 12
- 230000003139 buffering effect Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 4
- 230000006854 communication Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Images
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
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1835—Buffer management
- H04L1/1841—Resequencing
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Communication Control (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a method, a device and a system for data transmission. The device comprises that: a protocol data unit (PDU) is received, and a first identification in the head information of the PDU indicates whether the data in the PDU is retransmitted or not. In the data transmission method disclosed by the embodiment of the invention, the trouble process in the prior art that a receiver determines whether the received PDCP (Packet Data Convergence Protocol) PDU contains retransmitted data can be avoided, and the transmission efficiency is further improved.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a data transmission method, device, and system.
Background
LTE (Long Term Evolution) belongs to the Long Term Evolution version of the third generation wireless mobile communication protocol. The user protocol of LTE includes: PDCP (Packet Data Convergence Protocol), RLC (Radio Link Control), MAC (Medium Access Control), and PHY (Physical Layer). The PDCP has the following main functions: header compression of IP data packets, encryption and decryption of data, timer discarding, retransmission during reconstruction and reordering.
The process that the receiver determines whether to discard the received data according to the associated SN of the PDCP PDU is as follows: if the received PDCP PDU SN is smaller than the last PDCP PDU SN submitted to the upper layer, the data which is repeatedly sent by the sender due to switching retransmission is considered to be received, and discarding processing is needed; or if the difference between the received PDCP PDU SN and the last PDCP PDU SN submitted to the upper layer is larger than half of the size of the PDCP receiving window, the receiving side can also be judged to receive the data which is repeatedly sent by the sending side due to the switching retransmission, and the discarding processing is carried out.
In the prior art, a receiving party determines whether the received PDCP PDU contains retransmission data according to the SN of the received PDCP PDU and the SN of the PDCP PDU submitted to an upper layer last time by the receiving party, and the judgment process is complicated, so that the data transmission efficiency is low.
Disclosure of Invention
One aspect of the present invention provides a data transmission method, including:
receiving a Protocol Data Unit (PDU), wherein a first identifier in header information of the PDU indicates whether data in the PDU is retransmission data.
Another aspect of the present invention provides a data transmission method, including:
and sending a Protocol Data Unit (PDU), wherein a first identifier in the header information of the PDU indicates whether the data in the PDU is retransmission data.
Another aspect of the invention provides an apparatus comprising:
a receiving unit, configured to receive a protocol data unit PDU, where a first identifier in header information of the PDU indicates whether data in the PDU is retransmission data.
Another aspect of the invention also provides a system.
In the embodiment of the invention, the head information of the PDU sent by the data sending party comprises a first identification, the first identification is used for indicating whether the data in the PDU is retransmission data or not, after the receiving party receives the data, the receiving party judges whether the data in the PDU is retransmission data or initial transmission data through the identification, and discards the PDU with retransmission data meeting the condition.
Furthermore, the method directly identifies the data in the transmitted PDU without depending on the SN of the PDCP PDU received in the data transmission process and the SN of the PDCP PDU which is submitted to an upper layer by the PDCP receiver for the last time, thereby improving the reliability and the accuracy of the judgment result and avoiding the phenomenon of discarding the normally transmitted data caused by the inconsistency of state variables of the data receiver and the transmitter.
Drawings
FIG. 1 is a schematic structural diagram of a PDCP PDU according to an embodiment of the present invention;
fig. 2 is a flowchart of a data transmission method according to an embodiment of the present invention;
fig. 3 is a flowchart of another data transmission method according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an apparatus according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another apparatus provided in accordance with an embodiment of the present invention;
fig. 6 is a schematic structural diagram of the system provided by 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.
One embodiment of the present invention provides a data transmission method, wherein a protocol data unit PDU is sent, and a first identifier in header information of the PDU indicates whether data in the PDU is retransmission data.
Taking PDCP PDU as an example, the structure of PDU is shown in fig. 1, where rx in header information of PDU is a retransmission bit for identifying whether data is retransmission data. For example, when R _ TX is 1, it indicates that the data in the PDU is the data retransmitted by the sender, and when R _ TX is 0, it indicates that the data in the PDU is the initial data, i.e., the data is not the data retransmitted by the sender. For another example, when R _ TX is True, it indicates that data in the PDU is data retransmitted by the sender, and when R _ TX is False, it indicates that data in the PDU is data to be initially transmitted.
The present embodiment is applicable to a data transmission process in an acknowledged mode, that is, in the method provided in the present embodiment, during the process of generating a PDU by a data sending party, whether the data is retransmission data may be identified by setting the value of the first identifier, so that a receiving party directly determines whether the received PDU includes retransmission data according to the first identifier, thereby simplifying the process of determining retransmission data by the receiving party, improving the efficiency and reliability of data transmission, and saving air interface resources.
The embodiment also does not limit the structure improvement method to be only applicable to PDCP PDUs, and may also be applicable to other protocol data units, for example, the header information of the protocol data unit in the MAC layer includes a retransmission bit to identify data in the MAC PDU, which simplifies the process of determining whether the data in the PDU is retransmission data, and improves the efficiency of the transmission process.
As shown in fig. 2, another embodiment of the present invention provides a data transmission method, including the following steps.
Step S21, receiving a Protocol Data Unit (PDU), wherein a first identification in the header information of the PDU indicates that the data in the PDU is retransmission data.
Step S22, determining that the data in the received PDU is retransmission data according to the first identifier.
In this embodiment, the data receiving side determines whether the data in the PDU is the retransmission data through the first identifier in the received PDU, which simplifies the process of determining the retransmission data and improves the efficiency and reliability of protocol transmission.
The present embodiment may further include the following steps.
Step S23, judging whether the PDU is the PDU outside the reordering window, if yes, executing step S25; otherwise, step S24 is executed.
For example, the PDU process for determining whether the PDU is outside the reordering window is: and obtaining a difference value between the sequence number SN of the PDU and the PDU SN submitted to an upper layer last time, wherein when the difference value is larger than the length of a reordering window, the PDU is received outside the reordering window. The reordering window size may be set according to actual conditions, for example, the reordering window size is set to be one half of the SN number. Assuming that the number of SNs is 4096, the reordering window size is 2048. Assuming that the SN number is 8192, the reordering window size is 4096.
When the data in the PDU is the initial transmission data, the initial transmission data may be buffered and sequenced and then directly submitted to an upper layer, for example, a layer application above a protocol layer corresponding to the PDU is not described here any more.
Step S24, judging whether the PDU same as the PDU is cached, if so, executing step S25; otherwise, step S26 is executed.
And step S25, discarding the PDU.
In this step, by discarding the received PDU, it is possible to avoid repeatedly processing the same PDU, which is advantageous to improve the processing efficiency and accuracy.
And step S26, buffering the PDU.
In this step, by buffering the received PDU, it can be avoided that the initial data transmitted by the sender is discarded by mistake due to misjudgment, so as to avoid data loss and improve data transmission quality.
Optionally, when the data in the PDU received by the receiver is the initial transmission data, the receiver may be considered to have received all the data that needs to be retransmitted.
The present embodiment may further include step S27: and after receiving all the PDUs of the retransmission data, sequencing the received PDUs containing the retransmission data according to the ascending order of the COUNT value, and then submitting the PDUs to an upper layer in sequence. The counter COUNT of the receiving party is composed of the turnover statistic COUNT HFN and the SN, and the COUNT in each PDU is the same as the corresponding SN.
In the embodiment, whether the PDU with the retransmitted data needs to be discarded or not is judged according to the conditions of reordering windows and whether the same PDU is cached or not currently, so that the accuracy of the judgment result is improved, the phenomenon that normally sent data is discarded due to the fact that state variables of a data receiving party and a sending party are inconsistent is avoided, and the reliability of the data transmission process is improved.
As shown in fig. 3, another embodiment of the present invention provides a data transmission method including the following steps.
Step S31, receiving a Protocol Data Unit (PDU), wherein a first identification in the head information of the PDU indicates that the data in the PDU is not retransmission data.
Step S32, determining whether the data in the received PDU is retransmission data according to the first identifier.
And step S33, judging whether the initial transmission data in the PDU is the data transmitted after the link is reestablished, if so, executing step S34, and if not, executing step S35.
Step S34, judging whether the PDU SN is 1 larger than the SN of the PDU submitted to the upper layer last time, if so, submitting the received PDU to the upper layer; otherwise, buffering the received PDU.
Step S35, updating the relevant state variable according to the received PDU SN, and submitting the received PDU to the upper layer.
The process may specifically be: the rollover statistics count HFN is incremented by 1 when the received PDU SN is less than the next expected received PDU SN.
That is, when the received PDU is not the retransmission data, if the received PDU is the data transmitted normally, the SN is incremented, and assuming that the SN ranges from 0 to 4095, the sender will continuously and repeatedly transmit the data with SN of 0 to 4095, and each time the data with SN of 0 to 4095 is transmitted, the SN rollover statistic count HFN will be incremented by 1 to indicate the number of data transmissions. Assuming that the currently received SN is 3, the next SN expected to be received should be 4, but if the currently received SN is smaller than the next SN to be received, for example, the received SN is 2, which indicates that the receiver has received data in the last transmission process, that is, a data loss phenomenon occurs in the last data transmission, the HFN of the receiver is inconsistent with the sender at this time, so that the encryption and decryption COUNT parameters calculated by the receiver according to the HFN and the SN when performing encryption and decryption processing of the PDCP layer are inconsistent, and the receiver decrypts the wrong data, and continues to cause the decompression processing failure of the receiver.
In order to ensure that HFNs of a receiver and a sender are consistent in a subsequent data transmission process and ensure normal data transmission, in the method provided in this embodiment, when it is determined that a received PDU SN is smaller than a PDU SN expected to be received next, 1 is automatically added to the HFN of the receiver, thereby effectively ensuring synchronization of a rollover count state variable HFN of the data sender and the receiver when the number of PDUs lost in a link exceeds a reordering window size, and improving reliability and stability of high-speed data transmission processing of a protocol layer under a condition of enabling user plane non-null encryption algorithm encryption and ROHC compression processing.
As shown in fig. 4, another embodiment of the present invention provides an apparatus comprising: a sending unit 41, configured to send a PDU, where a first identifier in header information of the PDU indicates whether data in the PDU is retransmission data. The device provided in this embodiment may be configured to implement the steps performed by the sender or the base station in the method provided in the foregoing embodiment, and details are not described here again. The device provided in this embodiment may be a base station, or other device that may send a data packet to a UE.
As shown in fig. 5, another embodiment of the present invention provides an apparatus comprising: a receiving unit 51, configured to receive a PDU, where a first identifier in header information of the PDU indicates whether data in the PDU is retransmission data.
Optionally, the apparatus further comprises: a processing unit 52, configured to discard the PDU when the data in the PDU is retransmission data and the PDU is a PDU received in a reordering window and the same PDU is cached, or when the data in the PDU is retransmission data and the PDU is a PDU received outside the reordering window; or buffering the PDU when the PDU is received in a reordering window and the same PDU is not buffered.
Optionally, the processing unit 52 may include a storage unit 53, and the PDU is buffered by the storage unit 53.
For example, the working process of each unit in the device is as follows: the receiving unit receives a PDU sent by a data sending party, the processing unit judges whether data in the PDU is retransmission data according to a first identifier in header information in the PDU, when the PDU with the retransmission data is judged to be the PDU received in a reordering window and the same PDU is cached, or the PDU with the retransmission data is the PDU received outside the reordering window, the received PDU is discarded, and when the PDU with the retransmission data is judged to be the PDU received in the reordering window and the same PDU is not cached, the PDU is cached.
The device provided in this embodiment may be used to implement the steps executed by the receiver in the method provided in the foregoing embodiment, and details are not described here. The device provided by this embodiment may be a user equipment UE, such as a mobile phone.
The present invention also provides a data transmission system, the structure of which is shown in fig. 6, including: a data sender 61 and a data receiver 62, wherein:
the data sending party 61 is configured to send a protocol data unit PDU, where a first identifier in header information of the PDU indicates whether data in the PDU is retransmission data;
the data receiver 62 is configured to receive the PDU sent by the sender.
Further, the data receiving side is further configured to discard the PDU when the data in the PDU is retransmission data and the PDU is a PDU received within a reordering window and is cached as the same PDU, or when the data in the PDU is retransmission data and the PDU is a PDU received outside the reordering window; or buffering the PDU when the PDU is received in a reordering window and the same PDU is not buffered.
For the communication process and other similar processes between the data sender 61 and the data receiver 62 in the system provided by this embodiment, reference may be made to the method provided by the foregoing embodiment, and details are not described here again.
According to the device and the system provided by the embodiment of the invention, whether the data in the PDU is the retransmission data is judged through the first identification in the head information of the PDU, so that the judgment process of the retransmission data is simplified, the efficiency and the reliability of data transmission are improved, and the air interface resources are saved. And whether the PDU with retransmission data needs to be discarded or not is judged by the reordering window and the condition of whether the same PDU is cached or not currently, so that the accuracy of the judgment result is improved, the phenomenon that normally sent data is discarded due to the fact that state variables of a data receiving party and a data sending party are inconsistent is avoided, the reliability of the data transmission process is improved, and the working performance of equipment and a system is improved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the equipment disclosed by the embodiment, the description is relatively simple because the equipment corresponds to the method disclosed by the embodiment, and the relevant parts can be referred to the method part for description.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (12)
1. A method of data transmission, comprising:
receiving a Protocol Data Unit (PDU), wherein a first identifier in header information of the PDU indicates whether data in the PDU is retransmission data.
2. The method of claim 1, further comprising:
the first identification indicates that the data in the PDU is retransmission data, the PDU is not received outside a reordering window, and the PDU is discarded when the same PDU is cached; or,
and when the first identification indicates that the data in the PDU is retransmission data and the PDU is received outside a reordering window, discarding the PDU.
3. The method of claim 2, wherein the first flag indicates that data in the PDU is retransmission data, wherein the PDU is not a PDU received outside a reordering window, and wherein the PDU is buffered when a same PDU is not buffered.
4. The method of claim 2 or 3, further comprising:
acquiring a difference value between the PDU serial number SN and the PDU SN submitted to an upper layer last time;
and when the difference value is larger than the length of the reordering window, the PDU is received outside the reordering window.
5. The method of claim 1, further comprising:
and when the first identification indicates that the data in the PDU is not retransmission data and is the data received after link reconstruction, judging whether the SN of the PDU is 1 greater than the SN of the PDU submitted last time, if so, submitting the PDU to an upper layer, otherwise, caching the PDU.
6. The method of claim 5, wherein the first flag indicates that the data in the PDU is not retransmission data, is data received after non-link re-establishment, and the SN of the PDU is less than a next expected received SN, and wherein a rollover statistic count variable HFN of SNs is incremented by 1 and the PDU is submitted to an upper layer.
7. A method of data transmission, comprising:
and sending a Protocol Data Unit (PDU), wherein a first identifier in the header information of the PDU indicates whether the data in the PDU is retransmission data.
8. The method of claim 7,
the PDU comprises retransmission data, and the first identifier indicates that the data in the PDU is the retransmission data; or,
the PDU comprises initial transmission data, and the first identification indicates that the data in the PDU is the initial transmission data.
9. The method according to claim 7 or 8,
when the PDU comprises retransmission data, the first identifier is 1 or True; or,
when the PDU includes initial transmission data, the first identifier is 0 or False.
10. The method of claim 9, wherein the PDU is a packet convergence protocol data unit, PDCP, PDU.
11. An apparatus, comprising:
a receiving unit, configured to receive a protocol data unit PDU, where a first identifier in header information of the PDU indicates whether data in the PDU is retransmission data.
12. The apparatus of claim 11, further comprising:
a processing unit, configured to discard the PDU when the first identifier indicates that data in the PDU is retransmission data, the PDU is not a PDU received outside a reordering window and a PDU identical to the PDU is cached; or when the first identifier indicates that the data in the PDU is retransmission data and the PDU is received outside a reordering window, discarding the PDU; or buffering the PDU when the PDU is not received in a reordering window and the same PDU is not buffered.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010600678 CN102137441B (en) | 2010-12-22 | 2010-12-22 | method, device and system for data transmission |
| PCT/CN2011/081890 WO2012083762A1 (en) | 2010-12-22 | 2011-11-08 | Data transmission method, apparatus, and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010600678 CN102137441B (en) | 2010-12-22 | 2010-12-22 | method, device and system for data transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102137441A true CN102137441A (en) | 2011-07-27 |
| CN102137441B CN102137441B (en) | 2013-08-07 |
Family
ID=44297075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010600678 Active CN102137441B (en) | 2010-12-22 | 2010-12-22 | method, device and system for data transmission |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102137441B (en) |
| WO (1) | WO2012083762A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012083762A1 (en) * | 2010-12-22 | 2012-06-28 | 华为技术有限公司 | Data transmission method, apparatus, and system |
| CN107027136A (en) * | 2016-02-01 | 2017-08-08 | 中兴通讯股份有限公司 | The method and device of data processing |
| CN107332648A (en) * | 2017-06-23 | 2017-11-07 | 京信通信系统（中国）有限公司 | Data repeating method, device, storage medium and its computer equipment |
| CN107404769A (en) * | 2016-05-20 | 2017-11-28 | 中国移动通信有限公司研究院 | A kind of data transmission method and device |
| CN109195183A (en) * | 2018-08-30 | 2019-01-11 | 京信通信系统（中国）有限公司 | PDCP layers of data processing method, device and base station |
| WO2019062834A1 (en) * | 2017-09-28 | 2019-04-04 | 华为技术有限公司 | Information transmission method and device |
| CN109600203A (en) * | 2018-11-29 | 2019-04-09 | 西安电子科技大学 | The method for remapping node packet number is carried in a kind of SDAP PDU |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1859073A (en) * | 2005-08-29 | 2006-11-08 | 华为技术有限公司 | Dow data repeating method in radio communication system |
| EP2205037B1 (en) * | 2009-01-02 | 2011-06-29 | LG Electronics Inc. | Random access scheme for user equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100433917C (en) * | 2005-08-29 | 2008-11-12 | 华为技术有限公司 | Method for smotthly switching of high-speed downlink packet access users between base stations |
| CN102137441B (en) * | 2010-12-22 | 2013-08-07 | 华为技术有限公司 | method, device and system for data transmission |
-
2010
- 2010-12-22 CN CN 201010600678 patent/CN102137441B/en active Active
-
2011
- 2011-11-08 WO PCT/CN2011/081890 patent/WO2012083762A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1859073A (en) * | 2005-08-29 | 2006-11-08 | 华为技术有限公司 | Dow data repeating method in radio communication system |
| CN100438397C (en) * | 2005-08-29 | 2008-11-26 | 华为技术有限公司 | Dow data repeating method in radio communication system |
| EP2205037B1 (en) * | 2009-01-02 | 2011-06-29 | LG Electronics Inc. | Random access scheme for user equipment |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012083762A1 (en) * | 2010-12-22 | 2012-06-28 | 华为技术有限公司 | Data transmission method, apparatus, and system |
| CN107027136B (en) * | 2016-02-01 | 2020-11-20 | 中兴通讯股份有限公司 | Data processing method and device |
| CN107027136A (en) * | 2016-02-01 | 2017-08-08 | 中兴通讯股份有限公司 | The method and device of data processing |
| WO2017133595A1 (en) * | 2016-02-01 | 2017-08-10 | 中兴通讯股份有限公司 | Data processing method and apparatus |
| CN107404769A (en) * | 2016-05-20 | 2017-11-28 | 中国移动通信有限公司研究院 | A kind of data transmission method and device |
| CN107332648A (en) * | 2017-06-23 | 2017-11-07 | 京信通信系统（中国）有限公司 | Data repeating method, device, storage medium and its computer equipment |
| CN107332648B (en) * | 2017-06-23 | 2021-01-15 | 京信通信系统（中国）有限公司 | Data retransmission method and device, storage medium and computer equipment thereof |
| WO2019062834A1 (en) * | 2017-09-28 | 2019-04-04 | 华为技术有限公司 | Information transmission method and device |
| CN109587818A (en) * | 2017-09-28 | 2019-04-05 | 华为技术有限公司 | The transmission method and device of information |
| CN109587818B (en) * | 2017-09-28 | 2021-03-23 | 华为技术有限公司 | Information transmission method and device |
| US10986651B2 (en) | 2017-09-28 | 2021-04-20 | Huawei Technologies Co., Ltd. | Information transmission method and apparatus |
| CN109195183A (en) * | 2018-08-30 | 2019-01-11 | 京信通信系统（中国）有限公司 | PDCP layers of data processing method, device and base station |
| CN109195183B (en) * | 2018-08-30 | 2022-03-25 | 京信网络系统股份有限公司 | Data processing method and device of PDCP layer and base station |
| CN109600203A (en) * | 2018-11-29 | 2019-04-09 | 西安电子科技大学 | The method for remapping node packet number is carried in a kind of SDAP PDU |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012083762A1 (en) | 2012-06-28 |
| CN102137441B (en) | 2013-08-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101577451B1 (en) | Method of detecting and handling an endless rlc retransmission | |
| CN102137441B (en) | method, device and system for data transmission | |
| KR101467798B1 (en) | Method for sending status information in mobile telecommunications system and receiver of mobile telecommunications | |
| JP5279732B2 (en) | PDCP layer status report transmission method and receiver in mobile communication system | |
| KR101576789B1 (en) | User equipment and downward data receiving method of user equipment | |
| KR101098592B1 (en) | Method of receiving a point-to-multipoint service in a wireless communication system | |
| CN101848489B (en) | Sending/receiving method and device of PDU (Protocol Data Unit) | |
| CN102137435B (en) | Method, device and system for processing data | |
| KR100954925B1 (en) | Method of delivering a pdcp data unit to an upper layer | |
| CN111865820B (en) | Data transmission method, device, receiving end, communication system, equipment and medium | |
| GB2502954A (en) | Selective adjustment of a data unit sequence number | |
| US20080120728A1 (en) | Method and apparatus for performing integrity protection in a wireless communications system | |
| US8867391B2 (en) | Method and apparatus for error correction ciphering in mobile communication system | |
| US20150304903A1 (en) | Mobile communication method and mobile station | |
| CN112865934B (en) | Data transmission method, device, base station and storage medium | |
| CN108886713B (en) | Data transmission method, data receiving equipment and data sending equipment | |
| EP1816806A1 (en) | Method of resetting radio link control entity in a mobile communications system and related apparatus | |
| EP1916795A2 (en) | Method and apparatus for handling protocol error in a wireless communications system | |
| EP1936914A1 (en) | Method and apparatus for recovering protocol error in a wireless communications system | |
| EP1944938A1 (en) | Methods and apparatuses for performing integrity protection for a concatenated message | |
| US20080137574A1 (en) | Method and apparatus for handling data delivery in a wireless communications system | |
| US9825806B2 (en) | Mobile communication method and mobile station | |
| US8831005B2 (en) | Processing data units | |
| CN106341368A (en) | Data processing method and device | |
| US20100074178A1 (en) | Method for Indication of Consecutive Data Units in a RAN |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |