CN109818719B - Uplink data retransmission processing method and device and user equipment - Google Patents
Uplink data retransmission processing method and device and user equipment Download PDFInfo
- Publication number
- CN109818719B CN109818719B CN201711167521.6A CN201711167521A CN109818719B CN 109818719 B CN109818719 B CN 109818719B CN 201711167521 A CN201711167521 A CN 201711167521A CN 109818719 B CN109818719 B CN 109818719B
- Authority
- CN
- China
- Prior art keywords
- pdu
- retransmission
- rlc
- generating
- generation
- 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.)
- Active
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
The invention provides an uplink data retransmission processing method, an uplink data retransmission processing device and user equipment. The method comprises the following steps: after the RLC PDU is generated, setting the status identifier of the RLC PDU to prohibit the generation of retransmission PDU; after the RLC PDU is scheduled to be transmitted, setting the status identifier of the RLC PDU to allow a retransmission PDU to be generated; and after retransmission is needed or a message which is sent by the network side equipment and requires retransmission is received, generating retransmission PDU or not according to the state identification of the PDU which needs retransmission. The invention can determine whether to generate the retransmission PDU according to the state of the PDU in the cache, avoid RLC reset caused by repeated triggering retransmission due to backlog of a large amount of repeated data in the cache, ensure the stability of data transmission service, improve the timeliness of data transmission and further improve the system performance.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for processing uplink data retransmission, and a user equipment.
Background
RLC (Radio Link Control, Radio Link Control sublayer) and MAC (Media Access Control, MAC) are important Radio interface protocols in the LTE Radio Access system. When the uplink data is scheduled and transmitted, the RLC is configured in an acknowledgement mode, the RLC and the MAC are respectively in two processes, data generated by the RLC are placed in a buffer, the data are submitted to the MAC to be transmitted after a transmission opportunity arrives, namely the RLC generates the data firstly, and the data are transmitted after the MAC.
When the RLC receives NACK (No Acknowledgement) fed back by the network, the RLC generates a ReTx PDU (retransmission Protocol Data Unit) according to the NACK indication. When the uplink resource grant value of the network is small or the channel fading is large, the data buffered in the buffer cannot be scheduled by the MAC for a long time, and the RLC repeatedly generates ReTx PDUs, so that the ReTx PDUs are always accumulated in the buffer, not only is the resource efficiency of the system reduced, but also the ReTx PDUs trigger retransmission to reach a certain number of times and cause RLC reset, thereby causing interruption and fluctuation of uplink and downlink data transmission.
Disclosure of Invention
The uplink data retransmission processing method, the device and the user equipment provided by the invention can determine whether to generate the retransmission PDU according to the state of the PDU in the cache, thereby improving the timeliness of data transmission and further improving the system performance.
In a first aspect, the present invention provides a method for processing uplink data retransmission, where the method includes:
after the RLC PDU is generated, setting the status identifier of the RLC PDU to prohibit the generation of retransmission PDU;
after the RLC PDU is scheduled to be transmitted, setting the status identifier of the RLC PDU to allow a retransmission PDU to be generated;
and after retransmission is needed or a message which is sent by the network side equipment and requires retransmission is received, generating retransmission PDU or not according to the state identification of the PDU which needs retransmission.
Optionally, the generating a retransmission PDU or not according to the status identifier of the PDU that needs to be retransmitted includes: when the state identifier of the PDU needing retransmission is that the generation of the retransmission PDU is forbidden, the retransmission PDU is not generated;
and when the state identifier of the PDU needing retransmission is that the retransmission PDU is allowed to be generated, generating and storing the retransmission PDU.
Optionally, after the generating and storing the retransmission PDU, the method further includes: and setting the status identifier of the retransmission PDU as the state identifier of the retransmission PDU for forbidding generating the retransmission PDU.
Optionally, the initial value of the status flag of the RLC PDU is to allow generation of a retransmission PDU.
In a second aspect, the present invention provides an uplink data retransmission processing apparatus, where the apparatus includes:
the first setting unit is used for setting the status identifier of the RLC PDU to be forbidden to generate the retransmission PDU after the RLC PDU is generated;
the second setting unit is used for setting the status identifier of the RLC PDU to allow the generation of retransmission PDU after the RLC PDU is scheduled and transmitted;
and the processing unit is used for generating retransmission PDU or not generating retransmission PDU according to the state identification of the PDU needing to be retransmitted after the retransmission is needed or the message which is sent by the network side equipment and requires retransmission is received.
Optionally, the processing unit is configured to not generate a retransmission PDU when the status flag of the PDU needing to be retransmitted indicates that generation of the retransmission PDU is prohibited;
and when the state identifier of the PDU needing retransmission is that the retransmission PDU is allowed to be generated, generating and storing the retransmission PDU.
Optionally, the apparatus further comprises:
and the third setting unit is used for setting the state identifier of the retransmission PDU as the state identifier for forbidding the generation of the retransmission PDU after the processing unit generates and stores the retransmission PDU.
Optionally, the initial value of the status flag of the RLC PDU is to allow generation of a retransmission PDU.
In a third aspect, the present invention provides a user equipment, where the user equipment includes the above uplink data retransmission processing apparatus.
According to the uplink data retransmission processing method, device and user equipment provided by the embodiment of the invention, after the RLC PDU is generated, the status identifier of the RLC PDU is set to prohibit the generation of the retransmission PDU, after the RLC PDU is scheduled and transmitted, the status identifier of the RLC PDU is set to allow the generation of the retransmission PDU, and after the retransmission is needed or a message requiring retransmission sent by network side equipment is received, whether the retransmission PDU is generated or not is determined according to the status identifier of the PDU needing retransmission. Compared with the prior art, the invention can determine whether to generate the retransmission PDU according to the state of the PDU in the cache, avoid RLC reset caused by repeated triggering retransmission due to backlog of a large amount of repeated data in the cache, ensure the stability of data transmission service, improve the timeliness of data transmission and further improve the system performance.
Drawings
Fig. 1 is a flowchart of an uplink data retransmission processing method according to an embodiment of the present invention;
fig. 2 is a flowchart of an uplink data retransmission processing method according to another embodiment of the present invention;
fig. 3 is a schematic diagram illustrating DPU scheduling of an uplink data retransmission processing method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an uplink data retransmission processing apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an uplink data retransmission processing apparatus according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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.
The invention provides an uplink data retransmission processing method, which sets a state identification record PDU sending state for RLC PDU, as shown in figure 1, the method includes:
s11, after the RLC PDU is generated, setting the status identifier of the RLC PDU to prohibit the generation of retransmission PDU;
s12, after the RLC PDU is scheduled and transmitted, setting the status identifier of the RLC PDU to allow the generation of retransmission PDU;
the status Flag of the RLC PDU records the sending status of the PDU, and for example, the status Flag is represented by a inhibit ReTx Flag, which may be set to 1, and indicates that the generated RLC PDU is not scheduled and sent by an HARQ (Hybrid Automatic Repeat reQuest) process of an MAC in a buffer; setting the inhibit ReTx Flag to 0, which indicates that the MAC has scheduled the PDU or the PDU is in the transmission process; the initial value of the Prohibit ReTx Flag is set to 0.
After generating the RLC PDU, setting a inhibit ReTx Flag to 1, for indicating that the RLC is not allowed to generate the ReTx PDU before the MAC schedules to transmit the PDU; when the MAC schedules transmission of the PDU, the Prohibit ReTx Flag is set to 0 to indicate that if the PDU subsequently needs to be retransmitted, the RLC can generate a ReTx PDU and put it into a buffer.
S13, after retransmission is needed or a message requiring retransmission sent by the network side equipment is received, generating retransmission PDU or not according to the state identification of the PDU needing retransmission.
Optionally, the generating a retransmission PDU or not according to the status identifier of the PDU that needs to be retransmitted includes: when the state identifier of the PDU needing retransmission is that the generation of the retransmission PDU is forbidden, the retransmission PDU is not generated;
and when the state identifier of the PDU needing retransmission is that the retransmission PDU is allowed to be generated, generating and storing the retransmission PDU.
After retransmission is needed (for example, new data is not sent in uplink, the last PDU needs to be retransmitted according to poll triggering conditions) or a message (for example, NACK message) which is sent by network side equipment and requires retransmission is received, a status identifier of the PDU which needs to be retransmitted is inquired, and whether to generate a retransmission PDU is determined according to the sending status of the PDU which needs to be retransmitted. If the inquired inhibit ReTx Flag is 1, indicating that the PDU which needs to be retransmitted exists in the buffer, then not generating the retransmission PDU; when the Prohibit ReTx Flag is 0, the PDU needing to be retransmitted is indicated to be scheduled for transmission, and the retransmitted PDU is generated according to the indication of the NACK message and is put into a buffer.
Optionally, after the generating and storing the retransmission PDU, the method further includes: and setting the status identifier of the retransmission PDU as the state identifier of the retransmission PDU for forbidding generating the retransmission PDU.
Fig. 2 is a flowchart of an uplink data retransmission processing method according to an embodiment of the present invention. The initial value of the Prohibit ReTx Flag is set to 0, and indicates that the retransmission PDU is allowed to be generated; when receiving a NACK message or transmitting poll sent by network side equipment, inquiring the value of a Prohibit ReTx Flag, and judging whether the value is 0 (allowing to generate retransmission PDU); when the inhibit ReTx Flag is not 0, the PDU generated before is not scheduled and transmitted by the MAC, and the network has not received the PDU, so that the RLC does not need to generate the ReTx PDU and does not generate the retransmission PDU; when the inhibit ReTx Flag is 0, generating a retransmission PDU and storing the retransmission PDU in a buffer, and setting the inhibit ReTx Flag to be 1; after the MAC schedules transmission of the PDU, the inhibit ReTx Flag is set to 0.
Fig. 3 is a schematic diagram illustrating DPU scheduling in an uplink data retransmission processing method according to an embodiment of the present invention.
RLC generates PDU0, PDU1 and PDU2 and puts them in buffer, Harq0 of MAC schedules PDU 0; there are also PDU1 and PDU2 in the buffer, when the RLC receives NACK1 fed back by the network, but since PDU1 is still in the buffer, PDU1 is not generated, and then Harq1 schedules PDU1 for transmission; only PDU2 in the buffer, RLC in turn receives network feedback NACK1, since PDU1 does not exist in the buffer, PDU1 is generated this time and put in the buffer, and then Harq2 and Harq3 schedule PDU2 and ReTx PDU1 transmissions, respectively.
The uplink data retransmission processing method provided by the embodiment of the invention sets the status identifier of the RLC PDU to prohibit the generation of retransmission PDU after the RLC PDU is generated, sets the status identifier of the RLC PDU to allow the generation of retransmission PDU after the RLC PDU is scheduled and transmitted, and determines whether to generate retransmission PDU according to the status identifier of the PDU required to be retransmitted after the retransmission is required or a message required to be retransmitted sent by network side equipment is received. Compared with the prior art, the invention can determine whether to generate the retransmission PDU according to the state of the PDU in the cache, avoid RLC reset caused by repeated triggering retransmission due to backlog of a large amount of repeated data in the cache, ensure the stability of data transmission service, improve the timeliness of data transmission and further improve the system performance.
An embodiment of the present invention further provides an uplink data retransmission processing apparatus, and as shown in fig. 4, the apparatus includes:
a first setting unit 11, configured to set, after an RLC PDU is generated, a status flag of the RLC PDU to prohibit generation of a retransmission PDU;
a second setting unit 12, configured to set a status flag of the RLC PDU to allow generation of a retransmission PDU after scheduling transmission of the RLC PDU;
and the processing unit 13 is configured to generate a retransmission PDU or not according to a status identifier of the PDU that needs to be retransmitted after the retransmission is needed or a message that requires retransmission and is sent by the network side device is received.
Optionally, the processing unit 13 is configured to not generate a retransmission PDU when the status flag of the PDU needing to be retransmitted indicates that generation of the retransmission PDU is prohibited;
and when the state identifier of the PDU needing retransmission is that the retransmission PDU is allowed to be generated, generating and storing the retransmission PDU.
Optionally, as shown in fig. 5, the apparatus further includes:
and a third setting unit 14, configured to set the status flag of the retransmission PDU to prohibit generation of the retransmission PDU after the processing unit generates and stores the retransmission PDU.
Optionally, the initial value of the status flag of the RLC PDU is to allow generation of a retransmission PDU.
The uplink data retransmission processing device provided in the embodiment of the present invention sets the status flag of the RLC PDU to prohibit generation of a retransmission PDU after the RLC PDU is generated, sets the status flag of the RLC PDU to allow generation of a retransmission PDU after the RLC PDU is scheduled to be transmitted, and determines whether to generate a retransmission PDU according to the status flag of the PDU requiring retransmission after the retransmission is required or a retransmission-required message sent by a network side device is received. Compared with the prior art, the invention can determine whether to generate the retransmission PDU according to the state of the PDU in the cache, avoid RLC reset caused by repeated triggering retransmission due to backlog of a large amount of repeated data in the cache, ensure the stability of data transmission service, improve the timeliness of data transmission and further improve the system performance.
The embodiment of the invention also provides the user equipment, and the user equipment comprises the uplink data retransmission processing device.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A method for processing uplink data retransmission is characterized in that the method comprises the following steps:
after the RLC PDU is generated, setting a state identifier of the RLC PDU in a buffer memory to prohibit the generation of a retransmission PDU, wherein the state identifier of the RLC PDU records the sending state of the PDU;
after the RLC PDU is scheduled to be transmitted, setting the status identifier of the RLC PDU in a buffer memory to allow a retransmission PDU to be generated;
and after retransmission is needed or a message which is sent by the network side equipment and requires retransmission is received, generating retransmission PDU or not according to the state identification of the PDU which needs retransmission.
2. The method of claim 1, wherein the generating or not generating the retransmission PDU according to the status flag of the PDU requiring retransmission comprises: when the state identifier of the PDU needing retransmission is that the generation of the retransmission PDU is forbidden, the retransmission PDU is not generated;
and when the state identifier of the PDU needing retransmission is that the retransmission PDU is allowed to be generated, generating and storing the retransmission PDU.
3. The method of claim 2, wherein after the generating and storing of the retransmission PDU, the method further comprises: and setting the status identifier of the retransmission PDU as the state identifier of the retransmission PDU for forbidding generating the retransmission PDU.
4. The method according to any of claims 1 to 3, wherein the initial value of the status flag of the RLC PDUs in the buffer is to allow generation of retransmission PDUs.
5. An uplink data retransmission processing apparatus, the apparatus comprising:
the first setting unit is used for setting the status identifier of the RLC PDU in the buffer memory to prohibit the generation of retransmission PDU after the RLC PDU is generated, wherein the status identifier of the RLC PDU records the sending status of the PDU;
the second setting unit is used for setting the state identifier of the RLC PDU in the buffer memory to allow the generation of retransmission PDU after the RLC PDU is scheduled and transmitted;
and the processing unit is used for generating retransmission PDU or not generating retransmission PDU according to the state identification of the PDU needing to be retransmitted after the retransmission is needed or the message which is sent by the network side equipment and requires retransmission is received.
6. The apparatus according to claim 5, wherein the processing unit is configured to not generate a retransmit PDU when the status flag of the PDU requiring retransmission indicates that generation of the retransmit PDU is prohibited;
and when the state identifier of the PDU needing retransmission is that the retransmission PDU is allowed to be generated, generating and storing the retransmission PDU.
7. The apparatus of claim 6, further comprising:
and the third setting unit is used for setting the state identifier of the retransmission PDU as the state identifier for forbidding the generation of the retransmission PDU after the processing unit generates and stores the retransmission PDU.
8. The apparatus according to any of claims 5 to 7, wherein the initial value of the status flag of the RLC PDU in the buffer is to allow generation of a retransmission PDU.
9. A user equipment, characterized in that the user equipment comprises the uplink data retransmission processing apparatus according to any one of claims 5 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711167521.6A CN109818719B (en) | 2017-11-21 | 2017-11-21 | Uplink data retransmission processing method and device and user equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711167521.6A CN109818719B (en) | 2017-11-21 | 2017-11-21 | Uplink data retransmission processing method and device and user equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109818719A CN109818719A (en) | 2019-05-28 |
| CN109818719B true CN109818719B (en) | 2022-03-25 |
Family
ID=66600622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711167521.6A Active CN109818719B (en) | 2017-11-21 | 2017-11-21 | Uplink data retransmission processing method and device and user equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109818719B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101547469A (en) * | 2008-03-24 | 2009-09-30 | 华为技术有限公司 | Method, system and device for transmitting data |
| WO2015139259A1 (en) * | 2014-03-20 | 2015-09-24 | Qualcomm Incorporated | Methods and apparatus for improving packet switched call performance when the rlc entity is released |
| CN105721120A (en) * | 2007-12-10 | 2016-06-29 | 交互数字专利控股公司 | Method And Apparatus For Triggering Radio Link Control Packet Discard And Radio Link Control Re-Establishment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101122095B1 (en) * | 2009-01-05 | 2012-03-19 | 엘지전자 주식회사 | Random Access Scheme Preventing from Unnecessary Retransmission, and User Equipment For the Same |
-
2017
- 2017-11-21 CN CN201711167521.6A patent/CN109818719B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105721120A (en) * | 2007-12-10 | 2016-06-29 | 交互数字专利控股公司 | Method And Apparatus For Triggering Radio Link Control Packet Discard And Radio Link Control Re-Establishment |
| CN101547469A (en) * | 2008-03-24 | 2009-09-30 | 华为技术有限公司 | Method, system and device for transmitting data |
| WO2015139259A1 (en) * | 2014-03-20 | 2015-09-24 | Qualcomm Incorporated | Methods and apparatus for improving packet switched call performance when the rlc entity is released |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109818719A (en) | 2019-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111684752B (en) | Method for managing HARQ buffer of NR | |
| CN110169194B (en) | Configuration information for inactive state | |
| US8214710B2 (en) | Methods and apparatus for processing error control messages in a wireless communication system | |
| TWI357744B (en) | Cognitive flow control based on channel quality co | |
| TWI415502B (en) | Method and apparatus for improving uplink transmission of transmission time interval bundling in a wireless communication system | |
| TWI454096B (en) | System for efficient recovery of node-b buffered data following mac layer reset | |
| CN102124689B (en) | Method and device for controlling reporting Harq report | |
| EP2265069B1 (en) | Method for transmitting data in a wireless communication system and system thereof | |
| WO2017075854A1 (en) | Information transmission method, terminal and base station | |
| EP2314028B1 (en) | Method for communicating in a network, a secondary station and a system therefor | |
| WO2020216332A1 (en) | Data retransmission method, receiving method, terminal, and network device | |
| CN101132257A (en) | Condition report transmission method and sending terminal equipment thereof | |
| CN104981999B (en) | A kind of data processing method, communication equipment and system | |
| WO2010128636A1 (en) | Communication system, communication device, communication method, and program | |
| CN112636876A (en) | Opportunistic packet retransmission | |
| CN109818719B (en) | Uplink data retransmission processing method and device and user equipment | |
| CN112153694B (en) | Data processing method, device, terminal and storage medium | |
| WO2017075857A1 (en) | Information transmission method, terminal and base station | |
| CN110463103B (en) | Method and apparatus for indication of transport blocks | |
| WO2011145474A1 (en) | Transmitter apparatus, retransmission control method, and computer program | |
| JP2017220711A (en) | Communication device, communication method and computer program | |
| KR101300610B1 (en) | Apparatus and method for a transmission of a data in a communication system | |
| CN109906660A (en) | Data transmission method, the network equipment and terminal device | |
| JP2009027740A (en) | Mobile communication system, mobile terminal, and opposite terminal to mobile terminal via network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |