CN109561516A - The NAS PDU new biography of RRC a kind of and the sending method of re-transmission - Google Patents
The NAS PDU new biography of RRC a kind of and the sending method of re-transmission Download PDFInfo
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- CN109561516A CN109561516A CN201811446503.6A CN201811446503A CN109561516A CN 109561516 A CN109561516 A CN 109561516A CN 201811446503 A CN201811446503 A CN 201811446503A CN 109561516 A CN109561516 A CN 109561516A
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- rrc
- transmission
- nas pdu
- pdcp
- sending method
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Communication Control (AREA)
Abstract
The invention belongs to wireless communication technology field, the NAS PDU new biography of RRC a kind of and sending method, the information data processing terminal of re-transmission are disclosed；The NAS PDU new biography of the RRC and the sending method of re-transmission introduce the sequentially transmission mechanism and retransmission mechanism for being directed to NAS PDU in RRC protocol sublayers, and when PDCP is re-established, RRC, which can be retransmitted quickly, does not send successful NAS PDU.After the present invention realizes that the NAS PDU transmitted on SRB is abandoned because of re-establishing for PDCP, RRC physically can quickly send existing NAS PDU in new PDCP, realize the transmission of rapid data；The loss for reducing data as far as possible, to reduce the re-transmission of NAS signaling；For the Inter-DU or Intra-DU switching under CU/DU framework, under Intra-CU, it will substantially reduce the re-transmission of NAS signaling.
Description
Technical field
The invention belongs to the senders of the NAS PDU new biography and re-transmission of wireless communication technology field more particularly to a kind of RRC
Method.
Background technique
Currently, the prior art commonly used in the trade is such that in current agreement that regulation PDCP re-establishes process (Re-
Establishment procedure) in sender (Transmitting Entity or Transmitting Side)
Data (discard will be lost for the data of SRB with recipient (Receiving Entity or Receiving Side)
all the SDUs or PDUs).When PDCP is re-established (re-establishment), sender and recipient can lose
Abandon the not sent SDU and PDU on SRB, NAS PDU received for RRC, the chain because of introducing of CU-DU framework, on a DU
PDCP's caused by road changes re-establishes, and all abandons so as to cause the data of SRB, can not embody the advantage of CU-DU framework.Together
When, because current RAN introduces the transmitting-receiving of multi-connection data, after the failure of the channel of a PDCP, it is also possible to which there are other
The transmission in the available channel PDCP, all NAS PDU is ensured that receiving end correctly receives, without mistake sequencing.
In conclusion problem of the existing technology is:
(1) when PDCP is re-established, CU-DU framework is introduced, the reconstruction of PDCP caused by the link change on a DU
It is vertical, cause the data of SRB all to abandon, the advantage of CU-DU framework can not be embodied.
(2) when PDCP is re-established, because current RAN introduces the transmitting-receiving of multi-connection data, when PDCP's
After the failure of channel, it is also possible to which, there are other available channels PDCP, the transmission of all NAS PDU is ensured that receiving end is correct
Reception, without wrong sequencing.
Summary of the invention
In view of the problems of the existing technology, the present invention provides the NAS PDU new biography of RRC a kind of and the senders of re-transmission
Method.
The invention is realized in this way the NAS PDU new biography of RRC a kind of and the sending method of re-transmission, the NAS of the RRC
PDU new biography and the sending method of re-transmission introduce the sequentially transmission mechanism and retransmission mechanism for being directed to NAS PDU in RRC protocol sublayers,
When PDCP is re-established, RRC, which can be retransmitted quickly, does not send successful NAS PDU.
Further, the NAS PDU new biography of the RRC and the sending method of re-transmission specifically include:
(1) the RRC entity of transmitting terminal: a simple transmission sorting data window is introduced in RRC, gives each NAS PDU
Distribute a sequence number SN；
(2) the RRC entity of receiving end: PDCP carries out discard processing to SRB still according to existing agreement, by transmission
The re-transmission at end.
Further, described (1) specifically includes:
When sending NAS PDU: RRC sends a new NAS PDU every time, then newest No. SN idle using one, should
SN as RRC to an additional information of the PDCP SRB data packet sent, the participation primitive being only used between PDCP and RRC, no
Normal SRB data packet is had an impact；Newest No. SN increases by one；
PDCP uses No. SN according to ascending order, and is sent to low layer；
When PDCP protocol sublayers determine that the RRC PDU on the SRB is successfully sent, then RRC is given to send feedback response, notice
RRC has been successfully transmitted；
After RRC receives the confirmation message that PDCP protocol sublayers are sent, the mobile entire window that sends of RRC is to next confirmation
The position SN being properly received, carries out the preparation sent next time；
When re-establishing: when PDCP is re-established, the SRB data packet that abandons is needed for no send successfully,
The information of these data packets feeds back to RRC；
After RRC is received, the packet sequence retransmitted next time is determined according to No. SN of data packet；
Further, a sequence number SN is distributed to each NAS PDU；
The length of sequence number is LengthSN, unit: bit number；
SNmax: maximum No. SN；
Lengthwin: send the total length of window；
Then:
Lengthwin=(Lengthwin+1)/2n, wherein n=2,3,4,5 ....
Another object of the present invention is to provide the sending methods of a kind of the NAS PDU new biography for realizing the RRC and re-transmission
Computer program.
Another object of the present invention is to provide the sending methods of a kind of the NAS PDU new biography for realizing the RRC and re-transmission
Information data processing terminal.
Another object of the present invention is to provide a kind of computer readable storage mediums, including instruction, when it is in computer
When upper operation, so that computer executes the NAS PDU new biography of the RRC and the sending method of re-transmission.
In conclusion advantages of the present invention and good effect are as follows: the present invention realize the NAS PDU that transmits on SRB because
Re-establishing for PDCP and after abandoning, RRC physically can quickly send existing NAS PDU in new PDCP, realize quick
The transmission of data.The loss for reducing data as far as possible, to reduce the re-transmission of NAS signaling；For under CU/DU framework,
Inter-DU or Intra-DU switching under Intra-CU, it will substantially reduce the re-transmission of NAS signaling.
Detailed description of the invention
Fig. 1 is the NAS PDU new biography of RRC provided in an embodiment of the present invention and the sending method flow chart of re-transmission.
Fig. 2 is the RRC entity handles flow chart of transmitting terminal provided in an embodiment of the present invention.
Flow chart when Fig. 3 is transmission NAS PDU provided in an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Cause the data of SRB all to abandon when being re-established for PDCP, the advantage of CU-DU framework can not be embodied；Institute
There is the transmission of NAS PDU to be ensured that receiving end correctly receives, the problem of without wrong sequencing.The present invention realizes
After the NAS PDU transmitted on SRB is abandoned because of re-establishing for PDCP, RRC physically can quickly be sent in new PDCP
Existing NAS PDU, to realize the transmission of rapid data.
Application principle of the invention is explained in detail with reference to the accompanying drawing.
As shown in Figure 1, the NAS PDU new biography of RRC provided in an embodiment of the present invention and the sending method of re-transmission include following
Step:
S101: a simple transmission sorting data window is introduced in RRC, distributes a sequence number to each NAS PDU
SN；
S102:PDCP carries out discard processing to SRB still according to existing agreement, by the re-transmission at the end of transmission.
Application principle of the invention is further described with reference to the accompanying drawing.
The sequentially transmission mechanism and retransmission mechanism for being directed to NAS PDU are introduced in RRC protocol sublayers, when PDCP is rebuild
Immediately, RRC, which can be retransmitted quickly, does not send successful NAS PDU.
1, the RRC entity (as shown in Figure 2) of transmitting terminal:
A simple transmission sorting data window is introduced in RRC.
A sequence number SN (Sequence Number) is distributed to each NAS PDU.
The length of sequence number is LengthSN, unit: bit number.For example, 4bits, 8bits, etc..
SNmax: maximum SN (Sequence Number) number.
Lengthwin: send the total length of window.
Then:
Lengthwin=(Lengthwin+1)/2n, wherein n=2,3,4,5 ....Such as if sequence number length
LengthSNFor 8 bits, then SNmaxTransmission window for 255, RRC is 256/22=64, it can have 64 sequence numbers.
As described in Figure 3, when sending NAS PDU:
RRC sends a new NAS PDU every time, then newest No. SN idle using one, which gives as RRC
One additional information of the SRB data packet that PDCP is sent, the participation primitive being only used between PDCP and RRC, not to normal
SRB data packet has an impact.Newest No. SN increases by one.
PDCP uses No. SN according to ascending order, and is sent to low layer.
It when PDCP protocol sublayers determine that the RRC PDU on the SRB is successfully sent, then gives RRC to send feedback response, leads to
Know that RRC has been successfully transmitted.
After RRC receives the confirmation message that PDCP protocol sublayers are sent, the mobile entire window that sends of RRC is to next confirmation
The position SN being properly received, carries out the preparation sent next time.
When re-establishing:
When PDCP is re-established, for no SRB data packet for sending and successfully needing to abandon, these data packets
Information feed back to RRC.
After RRC is received, the packet sequence retransmitted next time is determined according to No. SN of data packet.
2, the RRC entity of receiving end:
Processing mode remains unchanged, and PDCP carries out discard processing to SRB still according to existing agreement, by the end of transmission
Re-transmission.
In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof real
It is existing.When using entirely or partly realizing in the form of a computer program product, the computer program product include one or
Multiple computer instructions.When loading on computers or executing the computer program instructions, entirely or partly generate according to
Process described in the embodiment of the present invention or function.The computer can be general purpose computer, special purpose computer, computer network
Network or other programmable devices.The computer instruction may be stored in a computer readable storage medium, or from one
Computer readable storage medium is transmitted to another computer readable storage medium, for example, the computer instruction can be from one
A web-site, computer, server or data center pass through wired (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)
Or wireless (such as infrared, wireless, microwave etc.) mode is carried out to another web-site, computer, server or data center
Transmission).The computer-readable storage medium can be any usable medium or include one that computer can access
The data storage devices such as a or multiple usable mediums integrated server, data center.The usable medium can be magnetic Jie
Matter, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid state hard disk Solid
State Disk (SSD)) etc..
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (7)
1. the NAS PDU new biography of RRC a kind of and the sending method of re-transmission, which is characterized in that the NAS PDU new biography of the RRC and
The sending method of re-transmission introduces the sequentially transmission mechanism and retransmission mechanism for being directed to NAS PDU in RRC protocol sublayers, when PDCP occurs
When re-establishing, RRC, which can be retransmitted quickly, does not send successful NAS PDU.
2. the NAS PDU new biography of RRC as described in claim 1 and the sending method of re-transmission, which is characterized in that the RRC's
NAS PDU new biography and the sending method of re-transmission specifically include:
(1) the RRC entity of transmitting terminal: NSAPDU identifier mechanism is introduced in RRC, distributes a sequence number SN to each NASPDU；
A realization of the window as this identifier mechanism is sent, a next reading power is increased；
(2) the RRC entity of receiving end: PDCP carries out discard processing to SRB still according to existing agreement, by transmitting terminal
Being properly received for NAS PDU is realized in the re-transmission of RRC.
3. the NAS PDU new biography of RRC as claimed in claim 2 and the sending method of re-transmission, which is characterized in that described (1) tool
Body includes:
When sending NAS PDU: RRC sends a new NAS PDU every time, then newest No. SN idle using one, which makees
It is RRC to an additional information of the PDCP SRB data packet sent, the interlayer primitive being only used between PDCP and RRC, not to just
Normal SRB data packet has an impact；Newest No. SN increases by one；
PDCP uses No. SN according to ascending order, and is sent to low layer；
It when PDCP protocol sublayers determine that the RRC PDU on the SRB is successfully sent, then gives RRC to send feedback response, notifies RRC
It has been successfully transmitted；
After RRC receives the confirmation message that PDCP protocol sublayers are sent, the mobile entire window that sends of RRC confirms correctly to next
The received position SN, carries out the preparation sent next time；
When re-establishing: when PDCP is re-established, for no SRB data packet for sending and successfully needing to abandon, these
The information of data packet feeds back to RRC；
After RRC is received, the packet sequence retransmitted next time is determined according to the identification information of data packet.
4. the NAS PDU new biography of RRC as claimed in claim 2 and the sending method of re-transmission, which is characterized in that give each NAS
PDU distributes a sequence number SN；
The length of sequence number is LengthSN, unit: bit number；
SNmax: maximum No. SN；
Lengthwin: send the total length of window；
Then:
Lengthwin=(Lengthwin+1)/2n, wherein n=2,3,4,5 ....
5. the calculating of a kind of NAS PDU new biography for realizing RRC described in Claims 1 to 4 any one and the sending method of re-transmission
Machine program.
6. the information of a kind of NAS PDU new biography for realizing RRC described in Claims 1 to 4 any one and the sending method of re-transmission
Data processing terminal.
7. a kind of computer readable storage medium, including instruction, when run on a computer, so that computer is executed as weighed
Benefit requires the NAS PDU new biography of RRC described in 1-4 any one and the sending method of re-transmission.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811446503.6A CN109561516B (en) | 2018-11-29 | 2018-11-29 | Method for sending new transmission and retransmission of NAS PDU of RRC |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811446503.6A CN109561516B (en) | 2018-11-29 | 2018-11-29 | Method for sending new transmission and retransmission of NAS PDU of RRC |
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| CN109561516A true CN109561516A (en) | 2019-04-02 |
| CN109561516B CN109561516B (en) | 2021-09-28 |
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