CN114826495B - Method for reducing NR, RLC, AM fragment loss report overhead - Google Patents
Method for reducing NR, RLC, AM fragment loss report overhead Download PDFInfo
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- H04L1/00—Arrangements for detecting or preventing errors in the information received
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Abstract
The invention discloses a method for reducing the expense of NR, RLC and AM fragment loss report, belonging to the technical field of 5G communication, comprising that a data packet is transmitted through an NR access network air interface, the RLC mode is configured to use the AM mode, a sending end distributes SN to each RLC SDU, a receiving end performs packet packing according to received AMD, PDU, SN and SO indication, packet loss detection is performed, after the sending end receives a state report, the data between SOstart and SOend of the SN is retransmitted, an indication bit is added in the state report to indicate whether the corresponding NACK _ SN has a discontinuous packet loss number field and the corresponding data between SOstart and SOend, the invention can carry the discontinuous packet loss number field and the corresponding SOstart/SOend when the RLC AM mode discontinuous packet loss exists by adding the indication bit, thereby avoiding the situation report carrying the same NACK _ SN for many times under the scene, thereby reducing the status reporting overhead in this scenario.
Description
Technical Field
The invention belongs to the technical field of 5G communication, and particularly relates to a method for reducing NR, RLC and AM fragment loss report overhead.
Background
In the NR protocol for 5G communication, a radio link control layer is positioned between a packet data convergence protocol layer and a medium access control layer, in a data sending entity, an RLC protocol layer forms an RLC service data unit for a PDCP protocol data unit transferred from the PDCP layer according to a scheduling result of a corresponding logical channel by an MAC layer, adds an RLC header to encapsulate the RLC service data unit into an RLC data PDU or forms a new RLC SDU after segmentation, adds the RLC header to encapsulate the RLC data PDU into the RLC data PDU, and then sends the RLC data PDU to the MAC layer, when the RLC layer is configured in a mode, a data receiving entity sends an RLC status report to the data sending entity according to the receiving condition of the RLC SDU of the data sending entity to confirm the RLC or RLC SDU fragments correctly received by the data receiving entity at present and the missing RLC or RLC SDU fragments needing data sending entity retransmission, and after the data sending entity receives the status report sent by the data receiving entity, retransmits the RLC or SDU fragments which is not successfully received by the data receiving entity according to the content indicated by the status report SDU or RLC SDU is segmented to realize reliable data transmission.
When discontinuous fragments with the same SN are lost, or the same SN is carried in a status report for multiple times, and each SN can only carry a pair of SOstart and SOend to indicate the loss of the discontinuous fragments; or the status report carries the SN once, SOstart carries the minimum byte of all packet losses, and SOend carries the maximum byte of all packet losses, and at this time, the receiving end considers that all bytes from SOstart to SOend are lost, which causes redundant retransmission and wastes air interface resources.
Disclosure of Invention
1. Problems to be solved
The invention provides a method for reducing the loss report overhead of NR, RLC and AM fragments, aiming at the problems that when the discontinuous fragments with the same SN are lost, the discontinuous fragments are indicated to be lost by carrying the same SN for multiple times in a state report, or when the SN is carried once in the state report and the SOend carries the maximum byte in all lost packets, redundant retransmission is caused, and air interface resources are wasted.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A method for reducing the overhead of NR, RLC and AM fragment loss report adopts the following steps:
step 1: the data packet is transmitted through an NR access network air interface;
step 2: configuring an RLC mode to use an AM mode, and distributing SN to each RLC SDU by a sending end;
and step 3: the receiving end performs packaging according to the received AMD, PDU, SN and SO indications and performs packet loss detection;
and 4, step 4: after receiving the state report, the sending end retransmits the data between SOstart and SOend of the SN;
and 5: in the status report, an indication bit is added to indicate whether the corresponding NACK _ SN has a discontinuous packet loss number field and corresponding data between SOstart and SOend.
Preferably, in step 1, when data is transmitted, the RLC entity performs RLC SDU segmentation according to a total packet size allowed to be transmitted and indicated by the bottom layer.
Further, the RLC SDU fragment does not limit the number of fragments.
Preferably, when the packet loss detection in step 3 detects that the SO segments of the consecutive bytes are lost, the status report carries SN, SOstart indicates that the starting byte is lost, and SOend indicates that the ending byte is lost.
Preferably, the indication bit indicates that a plurality of fragments of the same NACK _ SN are lost, and the indication bit is divided into four indication states of E1, E2, E3 and E4.
Further, the E1 indicates whether there is a NACK _ SN; the E2 indicates whether there is SOstart, SOend, and E4; the E3 indicates whether a NACK range exists; the E4 indicates whether there is a SOnum.
Further, when E4 is 0, it indicates that there is no socket, and NACK _ SN can only carry a pair of SOstart and SOend.
Further, when the E4 is 1, it indicates that there is a SOnum, and meanwhile, NACK _ SN can carry the pair of SOnum to SOstart and SOend, and there are 255 sonums at maximum.
Further, when E2, E3, and E4 are simultaneously 1, the last SOend of NACK _ SN corresponding thereto is tail byte of RLC SDU packet loss in SN = NACK _ SN.
Preferably, the size of NACK _ SN in the AM mode is 12 bits and 18 bits.
A method for reducing NR, RLC, AM fragment loss report overhead includes carrying out transmission through NR access network air interface by data packet, configuring RLC mode to use AM mode, distributing SN to each RLC SDU by sending end, carrying out package according to received AMD, PDU, SN and SO indication by receiving end and carrying out packet loss detection, retransmitting data from SOstart to SOend of SN after state report is received by sending end, adding indication bit in state report to indicate whether corresponding NACK _ SN has discontinuous packet loss number field and corresponding data from SOstart to SOend, carrying discontinuous packet loss number field and corresponding SOstart/SOend when discontinuous packet loss fragment of RLC AM mode exists by increasing indication bit method to avoid carrying same NACK _ SN in state report for multiple times under scene SO as to reduce state report overhead under scene.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) in the status report, the indication bit is added to indicate whether the corresponding NACK _ SN has a discontinuous packet loss number field and a corresponding SOstart/SOend, the field can indicate that a plurality of fragments of the same NACK _ SN are lost, the repeated carrying of the NACK _ SN for a plurality of times is replaced, and the repeated carrying of the NACK _ SN is avoided, so that the status report overhead is reduced;
(2) when the discontinuous fragmentation of the same SN is lost, the state report does not need to carry the same SN for many times, the repeated carrying of NACK _ SN can be replaced by increasing the indication field, the receiving end is prevented from considering that all bytes from SOstart to SOend are lost, and the waste of air interface resources is reduced;
(3) the invention divides the indication bit into four indication states of E1, E2, E3 and E4, each indication state represents whether different types of fragments are lost or exist, and the judgment can be carried out according to the pertinence of different fragment loss conditions, so that the data packet can be retransmitted quickly, and the redundant retransmission is reduced.
Drawings
In order to more clearly illustrate the embodiments or exemplary technical solutions of the present application, the drawings needed to be used in the embodiments or exemplary descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application and therefore should not be considered as limiting the scope, and it is also possible for those skilled in the art to obtain other drawings according to the drawings without inventive efforts.
FIG. 1 is a schematic diagram illustrating steps of a method for reducing the overhead of NR, RLC, AM discontinuous fragmentation loss status report;
FIG. 2 is a schematic diagram illustrating a principle of a method for reducing the overhead of NR, RLC, AM discontinuous fragmentation loss status report;
fig. 3 is a flowchart illustrating a method for reducing NR, RLC, and AM discontinuous fragmentation loss status reporting overhead in embodiment 2.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, it is obvious that the described embodiments are a part of the embodiments of the present application, but not all of the embodiments, and generally, components of the embodiments of the present application described and illustrated in the drawings herein can be arranged and designed in various different configurations.
Therefore, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application, and all other embodiments that can be derived by one of ordinary skill in the art based on the embodiments in the present application without making creative efforts fall within the scope of the claimed application.
Example 1
As shown in fig. 1, a method for reducing the overhead of NR, RLC, and AM fragmentation loss reports employs the following steps:
and the data packet is transmitted through an NR access network air interface, and when data is transmitted, the RLC entity performs RLC SDU fragmentation according to the total packet size allowed to be transmitted and indicated by the bottom layer, wherein the RLC SDU fragmentation does not limit the fragmentation times.
Configuring an RLC mode and using an AM mode, wherein a sending end distributes SN to each RLC SDU, and the size of NACK _ SN in the AM mode is 12 bits and 18 bits.
And the receiving end performs grouping according to the received AMD, PDU, SN and SO indication, performs packet loss detection, and carries SN and SOstart indication loss initial byte and SOend indication loss tail byte in the state report when detecting that SO fragments of continuous bytes are lost.
And after the sending end receives the state report, retransmitting the data between SOstart and SOend of the SN.
In the status report, adding an indicator bit to indicate whether a corresponding NACK _ SN has a discontinuous packet loss number field and corresponding data between SOstart and SOend, wherein the indicator bit indicates that a plurality of fragments of the same NACK _ SN are lost, the indicator bit is divided into four indication states of E1, E2, E3 and E4, and the E1 indicates whether the NACK _ SN exists; the E2 indicates whether SOstart, SOend, and E4 are present; the E3 indicates whether a NACK range exists; the E4 indicates whether there is a SOnum.
As can be seen from the above description, in this example, data packets are transmitted through an NR access network air interface, an RLC mode is configured to use an AM mode, a sending end allocates an SN to each RLC SDU, a receiving end performs packet packing according to received AMD, PDU, SN, and SO indications, and performs packet loss detection, after the sending end receives a status report, retransmits data between SOstart and SOend of the SN, and in the status report, an indicator bit is added to indicate whether a corresponding NACK _ SN has a discontinuous packet loss number field and corresponding data between SOstart and SOend.
Example 2
And the data packet is transmitted through an NR access network air interface, and when data is transmitted, the RLC entity performs RLC SDU fragmentation according to the total packet size allowed to be transmitted and indicated by the bottom layer, wherein the RLC SDU fragmentation does not limit the fragmentation times.
Configuring an RLC mode and using an AM mode, wherein a sending end distributes SN to each RLC SDU, the size of NACK _ SN in the AM mode is 12 bits and 18 bits, a receiving end carries out grouping according to received AMD, PDU, SN and SO indications and carries out packet loss detection, and when SO fragments of continuous byte are detected to be lost, SN, SOstart indication loss initial byte and SOend indication loss tail byte are carried in a state report.
And after receiving the status report, the sending end retransmits the data between the SOstart and the SOend of the SN.
In the status report, adding an indicator bit to indicate whether a corresponding NACK _ SN has a discontinuous packet loss number field and corresponding data between SOstart and SOend, wherein the indicator bit indicates that a plurality of fragments of the same NACK _ SN are lost, the indicator bit is divided into four indication states of E1, E2, E3 and E4, and the E1 indicates whether the NACK _ SN exists; the E2 indicates whether SOstart, SOend, and E4 are present; the E3 indicates whether a NACK range exists; the E4 indicates whether there is a socket, when E4 is 0, it indicates that there is no socket, and at the same time, NACK _ SN can only carry a pair of SOstart and SOend, when E4 is 1, it indicates that there is a socket, and at the same time, NACK _ SN can carry a pair of SOstart and SOend, and there are 255 at most sockets, and when E2, E3, and E4 are 1 at the same time, the last SOend of NACK _ SN corresponding to it is tail byte of RLC SDU packet loss in SN = NACK _ SN.
As can be seen from the above description, in this example, data packets are transmitted through an NR access network air interface, an RLC mode is configured to use an AM mode, a sending end allocates an SN to each RLC SDU, a receiving end performs packet packing according to received AMD, PDU, SN, and SO indications, and performs packet loss detection, after the sending end receives a status report, retransmits data between SOstart and SOend of the SN, and in the status report, an indicator bit is added to indicate whether a corresponding NACK _ SN has a discontinuous packet loss number field and corresponding data between SOstart and SOend.
The above examples are merely representative of preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that various changes, modifications and substitutions may be made by those skilled in the art without departing from the spirit of the invention, and all are intended to be included within the scope of the invention.
Claims (5)
1. A method for reducing NR, RLC, AM slicing loss report overhead is characterized by adopting the following steps:
step 1: the data packet is transmitted through an NR access network air interface;
step 2: configuring an RLC mode to use an AM mode, and distributing SN to each RLC SDU by a sending end;
and step 3: the receiving end performs packaging according to the received AMD, PDU, SN and SO indications and performs packet loss detection;
and 4, step 4: after receiving the status report, the sending end retransmits the data between the SOstart and the SOend of the SN;
and 5: in the status report, an indication bit is added to indicate whether a discontinuous packet loss number field exists in a corresponding NACK _ SN and data between SOstart and SOend exists, the indication bit indicates that a plurality of fragments of the same NACK _ SN are lost, the indication bit is divided into four indication states of E1, E2, E3 and E4, E1 indicates whether NACK _ SN exists, E2 indicates whether SOstart, SOend and E4 exist, E3 indicates whether NACK range exists, E4 indicates whether sosum exists, E4 is 0, which indicates that no sosum exists, NACK _ SN can only carry a pair of SOstart and SOend, E4 is 1, which indicates that sosum exists, while NACK _ SN can carry sostum to SOstart and SOend, and when E2, E3 and E4 are simultaneously 1, the last NACK _ SN is a packet loss tail SN = RLC in RLC packet loss.
2. The method of claim 1, wherein the method for reducing the overhead of NR, RLC, AM slice loss report comprises: in the step 1, when data is transmitted, the RLC entity performs RLC SDU segmentation according to the total packet size allowed to be transmitted indicated by the bottom layer.
3. The method of claim 2, wherein the method for reducing the overhead of NR, RLC, AM slice loss report comprises: the RLC SDU fragmentation does not limit the fragmentation times.
4. The method of claim 1, wherein the method for reducing the overhead of NR, RLC, AM slice loss report comprises: and when the packet loss detection in the step 3 detects that the SO fragments of the continuous bytes are lost, carrying SN in the status report, the SOstart indicating that the initial byte is lost, and the SOend indicating that the tail byte is lost.
5. The method of claim 1, wherein the method for reducing the overhead of NR, RLC, AM slice loss report comprises: the size of NACK _ SN in the AM mode is 12 bits and 18 bits.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957522A (en) * | 2011-08-24 | 2013-03-06 | 中兴通讯股份有限公司 | RLC (radio link control) AM (acknowledged mode) status report processing method and system |
| CN111525989A (en) * | 2019-02-03 | 2020-08-11 | 夏普株式会社 | Method, apparatus and storage medium for transmitting RLC status report |
| CN113473532A (en) * | 2021-06-29 | 2021-10-01 | 中信科移动通信技术股份有限公司 | Method and system for optimally transmitting radio link control state report |
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| WO2018203622A1 (en) * | 2017-05-02 | 2018-11-08 | Lg Electronics Inc. | Method and device for receiving data unit |
| US10355827B2 (en) * | 2017-08-08 | 2019-07-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Status reporting in a wireless communication system |
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| CN102957522A (en) * | 2011-08-24 | 2013-03-06 | 中兴通讯股份有限公司 | RLC (radio link control) AM (acknowledged mode) status report processing method and system |
| CN111525989A (en) * | 2019-02-03 | 2020-08-11 | 夏普株式会社 | Method, apparatus and storage medium for transmitting RLC status report |
| CN113473532A (en) * | 2021-06-29 | 2021-10-01 | 中信科移动通信技术股份有限公司 | Method and system for optimally transmitting radio link control state report |
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