CN109561465A - Service data unit processing method, discarding method, corresponding user equipment and computer-readable medium - Google Patents
Service data unit processing method, discarding method, corresponding user equipment and computer-readable medium Download PDFInfo
- Publication number
- CN109561465A CN109561465A CN201710927143.0A CN201710927143A CN109561465A CN 109561465 A CN109561465 A CN 109561465A CN 201710927143 A CN201710927143 A CN 201710927143A CN 109561465 A CN109561465 A CN 109561465A
- Authority
- CN
- China
- Prior art keywords
- rlc
- entity
- sdu
- pdu
- data
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
- H04W28/0242—Determining whether packet losses are due to overload or to deterioration of radio communication conditions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0278—Traffic management, e.g. flow control or congestion control using buffer status reports
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
- H04W28/065—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/10—Flow control between communication endpoints
- H04W28/14—Flow control between communication endpoints using intermediate storage
Abstract
Disclose a kind of method for handling RLC SDU executed at UE, comprising: at the RLC entity of UE, generate RLC data PDU by increasing RLC head portion to the RLC SDU from upper layer entity；And RLC data PDU generated is stored in and is sent in buffer area.Also disclose a kind of method for abandoning RLC SDU executed at UE, comprising: at the RLC entity of UE, receive the instruction of the specific RLC SDU of discarding from upper layer entity；And in the case where determining that at least one segmentation of the specific RLC SDU of specific RLC SDU or described has generated corresponding RLC data PDU, still the RLC data PDU is not yet sent to lower course of solid, abandon the RLC data PDU.Also disclose corresponding UE and computer-readable medium.
Description
Technical field
This disclosure relates to wireless communication technology field, more specifically, this disclosure relates to what is executed at user equipment is used for
Handle method, the method for abandoning service data unit and the corresponding user equipment of service data unit.
Background technique
In March, 2016, third generation partner program (3rd Generation Partnership Project:
3GPP) in RAN#71 plenary session, NTT DOCOMO proposes a new research project about 5G technical standard (referring to non-special
Sharp document: RP-160671:New SID Proposal:Study on New Radio Access Technology), and obtain
Approval.The purpose of the research project is to develop new wireless (New Radio:NR) access technology to answer to meet all of 5G
With scene, demand and deployed environment.Mainly there are three application scenarios by NR: mobile broadband communication (the Enhanced mobile of enhancing
Broadband:eMBB), large-scale machines class communicates (massive Machine type communication:mMTC) and super
Reliable low latency communication (Ultra reliable and low latency communications:URLLC).
Reach in NR wireless spread-spectrum technology (RLC) entity in the RAN2#96 meeting of 3GPP that in October, 2016 holds
Do not support cascade operation.Reach separation carrying (split in the Adhoc#2 meeting of RAN2 NR that in June, 2017 holds
Bearer the data prediction similar with single carrier can) be used.Reach in the RAN2#99 meeting that in August, 2017 is held
NR user equipment (UE) can separate carrying progress data to uplink before receiving lower layer's request (or data sending request) and locate in advance
Reason, and data (i.e. pretreated data) are submitted to lower layer before receiving the request from lower layer.The all previous meeting
The conclusion reached will affect the process flow of NR RLC entity transmitting terminal.
The disclosure is dedicated to solving at affirmation mode AM RLC entity transmitting terminal or Unacknowledged Mode UM RLC sending entity
Relevant issues involved in process are managed, the RLC from upper layer is taken including AM RLC entity transmitting terminal or UM RLC sending entity
Process flow, AM RLC entity transmitting terminal or the UM RLC sending entity of business data cell SDU receives the discarding from upper layer
The operation that should be executed when specific RLC SDU.
Summary of the invention
The purpose of the disclosure aims to solve the problem that above-mentioned technical problem, and specifically, the disclosure aims to solve the problem that AM RLC entity is sent
Relevant issues involved in end or UM RLC sending entity process flow, including AM RLC entity transmitting terminal or UM RLC are sent in fact
Body connects the process flow of the RLC service data unit SDU from upper layer, AM RLC entity transmitting terminal or UM RLC sending entity
The operation that should be executed when receiving the specific RLC SDU of discarding from upper layer.
To achieve the goals above, the first aspect of the disclosure provides a kind of method executed at UE, comprising: in UE
RLC entity at,
RLC data PDU is generated by increasing RLC head portion to the RLC SDU from upper layer entity；And
RLC data PDU generated is stored in and is sent in buffer area.
In one exemplary embodiment, the method also includes: when RLC entity receive the data from lower course of solid hair
When sending instruction, the RLC data PDU stored in sending buffer area is sent to lower course of solid.
In one exemplary embodiment, if the RLC data PDU stored in sending buffer area is sent more than the data
Indicated transmittable size of data in instruction is then segmented the RLC data PDU and is sent to after modifying RLC head portion
Lower course of solid.
In one exemplary embodiment, the RLC entity includes: AM RLC entity and/or UM RLC sending entity.
In one exemplary embodiment, the method also includes:
Maintenance sends state variable TX_Next at AM RLC entity, and the transmission state variable will distribution for storing
To the sequence number of next RLC SDU received from upper layer entity；And
The value of currently transmitted state variable TX_Next is being associated with the RLC received from upper layer by AM RLC entity
The value of TX_Next is increased by 1 after SDU.
The second aspect of the disclosure provides a kind of method executed at UE, comprising: at the RLC entity of UE,
Receive the instruction of the specific RLC service data unit SDU of discarding from upper layer entity；And
Corresponding RLC has been generated at least one segmentation for determining the specific RLC SDU of specific RLC SDU or described
Data PDU, in the case that still the RLC data PDU is not yet sent to lower course of solid, the RLC data PDU is abandoned.
In one exemplary embodiment, the method also includes: be associated in the RLC SDU being dropped or its segmentation
In the case that sequence number or corresponding RLC data PDU are dropped, by the RLC SDU being dropped or its segmentation or accordingly
The corresponding sequence number of RLC data PDU is reassigned to other RLC SDU or its segmentation or corresponding RLC data PDU, or is sequence
The row number RLC SDU bigger than the sequence number of the RLC SDU being dropped or its segmentation or corresponding RLC data PDU and/or its
Segmentation and/or corresponding RLC data PDU redistribute sequence number.
In one exemplary embodiment, the RLC entity includes: AM RLC entity and/or Unacknowledged Mode UM RLC hair
Send entity.
The third aspect of the disclosure provides a kind of UE, comprising:
Communication interface is configured to communicate；
Processor；And
Memory is stored with computer executable instructions, and described instruction is when being executed by processor, before executing the UE
State either method.
The fourth aspect of the disclosure provides a kind of computer-readable medium, is stored with instruction on it, and described instruction exists
When being executed by processor, the processor is made to execute aforementioned either method.
In an exemplary embodiment of the disclosure, it is generated by increasing RLC head portion to the RLC SDU from upper layer entity
RLC data PDU generated is simultaneously stored in transmission buffer area by RLC data PDU, so that RLC entity (e.g., AM RLC entity
Transmitting terminal or UM RLC sending entity) it can will directly be stored in send when receiving the data from lower layer and sending instruction and delay
The RLC data PDU deposited in area is sent to lower layer, reduces data transmission delay.
In addition, by after the instruction for receiving the specific RLC SDU of discarding from upper layer entity determine it is described specific
At least one segmentation of the specific RLC SDU of RLC SDU or described has generated corresponding RLC data PDU but the RLC number
The RLC data PDU is abandoned in the case where not yet sending to lower layer according to PDU, so that RLC entity can be no longer valid to avoid sending
Data, save radio resource.
The additional aspect of the disclosure and advantage will be set forth in part in the description, these will become from the following description
It obtains obviously, or recognized by the practice of the disclosure.
Detailed description of the invention
By the detailed description below in conjunction with attached drawing, above and other feature of the disclosure be will become more apparent,
In:
Fig. 1 shows the schematic diagram of the RLC AM physical model in existing protocol；
Fig. 2 shows according to the method for handling RLC SDU executed at UE of disclosure exemplary embodiment
Schematic flow chart；
Fig. 3 (a) shows the schematic diagram of the RLC AM physical model according to one exemplary embodiment of the disclosure；
Fig. 3 (b) shows the schematic diagram of the RLC AM physical model according to disclosure another exemplary embodiment；
Fig. 4 shows the schematic diagram of two RLC UM peer-entities models according to disclosure exemplary embodiment；
Fig. 5 shows the schematic block diagram of the UE for handling RLC SDU according to disclosure exemplary embodiment；
Fig. 6 shows the method for abandoning RLC SDU of the execution at UE according to disclosure exemplary embodiment
Schematic flow chart；And
Fig. 7 shows the schematic block diagram of the UE for abandoning RLC SDU according to disclosure exemplary embodiment.
Specific embodiment
The disclosure is described in detail with reference to the accompanying drawings and detailed description.It should be noted that the disclosure does not answer office
It is limited to specific embodiment described below.In addition, for simplicity being omitted to the public affairs not being directly linked with the disclosure
The detailed description of technology is known, to prevent understanding of this disclosure from causing to obscure.Embodiment described in the disclosure is not limited to NR, can also be with
Using other wireless communication systems, such as 6G.
Be described below this disclosure relates to part term, if not otherwise specified, this disclosure relates to term use it is fixed herein
Justice.
PDCP (Packet Data Convergence Protocol): Packet Data Convergence Protocol.
RLC (Radio Link Control): wireless spread-spectrum technology.RLC entity can be Unacknowledged Mode
(Unacknowledged Mode) UM RLC entity or affirmation mode (Acknowledged Mode) AM RLC entity.In AM
In RLC entity, the segmentation of RLC SDU or RLC SDU are confirmed mode data (AMD) PDU after increasing RLC head portion.In UM
In RLC entity, the segmentation of RLC SDU or RLC SDU obtain UMD PDU after increasing RLC head portion.RLC data PDU can be AMD
PDU or UMD PDU.
PDU (Protocol Data Unit): protocol Data Unit.
SDU (Service Data Unit): service data unit.
In the disclosure, the data that upper layer is received or be sent to from upper layer are known as SDU, lower layer will be sent to or are received from lower layer
Data be known as PDU.For example, PDCP entity is from the received data in upper layer or is sent to the data on upper layer and is known as PDCP SDU；PDCP
Data that entity is received from RLC entity or the data for being sent to RLC entity are known as PDCP PDU (namely RLC SDU).RLC is real
Body is known as RLC SDU from the data that PDCP entity receives, and RLC entity is delivered to lower layer (that is, media access control (MAC) layer)
Data be known as RLC PDU, including RLC data PDU and RLC control PDU.RLC data PDU is raw by the RLC SDU from upper layer
At it is status PDU that RLC, which controls PDU, and the status PDU is used to provide the positive acknowledgment ACK or no to RLC SDU or its segmentation
Surely confirm NACK.
The current newest 3GPP TS38.322 version 1.0.0 reached (is specifically shown in 3GPP motion R2-1709752, mentions herein
Version 0.3.0 is denoted as in case) in Fig. 4 .2.1.3.1-1 show RLC AM physical model, shown herein with Fig. 1.Such as
Shown in Fig. 1, AM RLC entity transmitting terminal is that RLC SDU from PDCP entity generates RLC head portion (header) and by generation
RLC head portion, which is stored in, to be sent in buffer area.When receiving the data transmission instruction from lower layer, increase RLC head for RLC SDU
Lower layer is submitted to behind portion.If RLC SDU is plus the transmittable size of data for behind RLC head portion being more than lower layer's instruction, to RLC
SDU is segmented and modifies corresponding head, is then segmented for RLC SDU and is increased RLC head portion and be submitted to lower layer.In Fig. 1 institute
Show in RLC AM physical model, the transmission buffer area storage of AM RLC entity is RLC SDU.
However, this processing mode that RLC SDU and associated RLC head portion are stored in sending buffer area, in RLC reality
When the data that body receives lower layer send instruction, it is then forwarded to lower layer after increasing head for RLC SDU, when increasing data transmission
Prolong.
Hereinafter with reference to Fig. 2, to according to disclosure exemplary embodiment executed at UE for handling RLC SDU's
Method is described.The side for being used to handle RLC SDU that Fig. 2 shows according to an exemplary embodiment of the present invention to execute at UE
The flow chart of method 200.Specifically, it is executed at RLC entity of the method 200 in UE.
As shown in Fig. 2, method 200 may include step S201, S202 and S203.
In step s 201, RLC entity can be by increasing to the RLC SDU from upper layer entity (for example, PDCP entity)
Add RLC head portion to generate RLC data PDU, also can be described as, RLC entity will be from upper layer entity (for example, PDCP entity)
RLC SDU is mapped as RLC data PDU.
In step S202, RLC data PDU generated is stored in and is sent in buffer area.
It, will be when receiving the data from lower course of solid (for example, MAC entity) and sending instruction in step S203
It sends the RLC data PDU stored in buffer area and is sent to lower course of solid.
If the RLC data PDU stored in sending buffer area is more than that the data send indicated in instruction send out
Send size of data, then the RLC data PDU is segmented and modify and send behind RLC head portion (also can be described as " submitting ",
Similarly hereinafter) give lower course of solid.In other words, when the segmentation that the RLC data PDU for being submitted to lower layer includes RLC SDU, then transmission is cached
The RLC data PDU or its corresponding RLC SDU of area's storage are segmented and are sent to lower course of solid after modifying RLC head portion.
In one exemplary embodiment, the RLC entity can be AM RLC entity.In this exemplary embodiment, side
Method 200 specifically executes at the transmitting terminal of AM RLC entity.Later will in conjunction with Fig. 3 (a) and 3 (b) to the exemplary embodiment into
Row description.
In this exemplary embodiment, method 200 can also include: the maintenance transmission state variable at AM RLC entity
TX_Next, the transmission state variable will distribute to the sequence of next RLC SDU received from upper layer entity for storing
Number；And AM RLC entity is received from upper layer entity the value of currently transmitted state variable TX_Next is associated with one
The value of TX_Next is increased by 1 after RLC SDU.
In a further exemplary embodiment, the RLC entity can be UM RLC sending entity.In the exemplary embodiment
In, method 200 specifically executes at UM RLC sending entity.The exemplary embodiment will be described in conjunction with Fig. 4 later.
Correspondingly, RLC AM physical model shown in FIG. 1 is revised as such as Fig. 3 (a) or 3 by the technical solution proposition of the disclosure
(b) shown in.Fig. 3 (a) and 3 (b) respectively illustrates the schematic diagram of the RLC AM physical model according to disclosure exemplary embodiment.
As shown in Fig. 3 (a) and 3 (b), the transmitting terminal of AM RLC entity can be in step s 201 to real from such as PDCP
The RLC SDU of body increases RLC head portion also can be described as with generating AMD PDU, by the RLC SDU from such as PDCP entity
It is mapped as AMD PDU.
In step S202, AMD PDU can be stored in by the transmitting terminal of AM RLC entity to be sent in buffer area.
In step S203, when the transmitting terminal of AM RLC entity receives the transmission instruction of the data from such as MAC entity,
The AMD PDU for sending buffer area storage is submitted to MAC entity.
If the AMD PDU stored in sending buffer area is more than that the data send transmittable number indicated in instruction
According to size, then the RLC data PDU is segmented and is sent to lower course of solid after modifying RLC head portion.In other words, when submitting
AMD PDU to lower layer includes the segmentation of RLC SDU, then to the AMD PDU or its corresponding RLC SDU for sending buffer area storage
It is segmented and is sent to lower course of solid after modifying RLC head portion.
The modified RLC AM physical model that Fig. 3 (a) or 3 (b) is shown is included at least with lower module (alternatively referred to as function
Can): buffer area module is sent, cache module, segmentation and modification RLC head portion module is retransmitted, RLC control module, increases RLC head portion
Module.
The correlation between the effect and modules of AM RLC entity transmitting terminal modules is detailed below.
It sends buffer area module to be used to the RLC SDU from such as PDCP entity being mapped as AMD PDU, that is, be RLC
SDU is associated with a sequence number TX_Next and the value by setting the sequence number of AMD PDU to TX_Next to construct AMD
AMD PDU is stored in and sends in buffer area by PDU.
Retransmit cache module be used for store wait retransmit AMD PDU or be submitted to lower layer but not yet confirmation transmission at
The AMD PDU of function.AMD PDU can be stored in simultaneously when being submitted to lower layer to be retransmitted in buffer area.It is real from equity when receiving
When indicating that some AMD PDU is not sent successful in the status PDU of body, the AMD PDU is taken out from re-transmission buffer area and is submitted to
Next layer.If the AMD PDU has been more than the size of the transmittable data of lower layer's instruction, the AMD PDU is submitted to
Segmentation and modification RLC head portion module are to be segmented the AMD PDU.
The size of transmittable data that segmentation and modification RLC head portion module are indicated according to lower layer is to being stored in transmission buffer area
Or the AMD PDU of re-transmission buffer area be segmented or is segmented again and is submitted to lower course of solid after modifying RLC head portion.
RLC control module generates the load of status PDU according to the RLC PDU that AM RLC entity receiving end receives.
Increasing RLC head portion module is that the data (i.e. the load of status PDU) from RLC control module increase head generation
RLC controls PDU or status PDU.
Optionally, in 3GPP TS38.322 version 1.0.0 5.1.3.1.1 section in AM RLC entity to from upper layer
The process flow of RLC SDU may be modified such that following process:
It is the sequence that the RLC SDU relating value is TX_Next for each RLC SDU, AM RLC entity from upper layer
Row number SN, and the value by setting the SN of AMD PDU to TX_Next constructs the AMD PDU.The AMD PDU is deposited
Storage is in sending buffer area.The value that TX_Next is arranged is TX_Next+1.
Optionally, when AMD PDU (or RLC SDU) is segmented, AM RLC entity modifies the AMD PDU's
RLC head portion (or head associated by RLC SDU).It is segmented the sequence number of obtained AMD PDU and the AMD PDU phase being segmented
Together, or the obtained sequence number of AMD PDU of segmentation is identical as the sequence number of corresponding RLC SDU.
Optionally, by modified RLC head portion and corresponding RLC SDU fragmented storage in sending buffer area.Specifically,
When AMD PDU (or RLC SDU) is segmented, such as a RLC SDU is divided into two sections, is referred to as first segment and
Two sections, each segmentation for being RLC SDU generates the RLC head portion comprising grading excursion SO, and includes in the RLC head portion of the segmentation
Sequence number is identical as original RCL SDU.It is sent in fact it should be noted that the staged operation is also applied for UMD PDU or UM RLC
Body.
In the disclosure, AM RLC entity maintaining sends state variable TX_Next, and the variable is for storing next new production
The sequence number of raw AMD PDU or next next or next general by assigned sequence number or allocated sequence number
For the sequence RLC SDU received from upper layer the sequence number distributed or the RLC SDU received from next upper layer will be distributed to
Row number or the sequence number that the new RLC SDU received from upper layer will be distributed to.If sequence number 12 bit identifications, TX_
Next value range is the value mould (modulo) 4096 that 0 to 4095, TX_Next value=arithmetic operator obtains；If sequence number
With 18 bit identifications, then TX_Next value range is the value mould that 0 to 262143, TX_Next value=arithmetic operator obtains
(modulo)262144.Send state variable TX_Next initial value be 0, the variable can by following two mode it
One updates:
Current TX_Next is associated with one in AM RLC entity and received from upper layer by the value of mode one: TX_Next
Update or increase by 1 when RLC SDU.Optionally, this operation is just executed when AM RLC entity transmitting terminal supports data prediction.
The value of mode two: TX_Next updates or increases when AM RLC entity transmits Sequence Number the AMD PDU for TX_Next
Add 1.Optionally, this operation is just executed when AM RLC entity transmitting terminal does not support data prediction.
Optionally, whether AM RLC entity transmitting terminal supports that data prediction is configured by RRC signaling.Optionally, lead to
Media interviews MAC control element CE dynamic activation and/or deactivation data pretreatment are crossed, or PDU dynamic is controlled by RLC and is swashed
The pretreatment of living and/or deactivation data.
It optionally, can be the RLC SDU assigned sequence for RLC SDU, the AM RLC entity received from upper layer
Number SN=TX_Next simultaneously constructs AMD PDU, and the sequence number of the AMD PDU is set to TX_Next；Then, it is arranged TX_Next's
Value is TX_Next+1 (that is, the value of TX_Next is increased by 1).
In order to reach the operational consistency of non-acknowledgement UM RLC sending entity and AM RLC entity transmitting terminal, the skill of the disclosure
Two UM peer-entities models shown in Fig. 4 .2.1.2.1-1 in 3GPP TS38.322 version 1.0.0 are repaired in the proposition of art scheme
It is changed to two UM peer-entities models shown in Fig. 4.
The effect of modules and the correlation of intermodule in UM RLC sending entity is detailed below.
In the UM-RLC sending entity model shown in Fig. 4, UM RLC sending entity include at least following two module (
Can be described as function): it sends buffer area module and is segmented and modifies RLC head portion module.Wherein, example will be come from by sending buffer area module
As the RLC SDU of PDCP entity is mapped as UMD PDU and is stored in send in buffer area.Receiving the conveyer from lower layer
When the instruction of meeting (i.e. transmission data), segmentation and modification RLC head portion module send according to the data from lower course of solid and indicate institute
The transmissible size of data indicated will send the UMD PDU in buffer area and send to lower layer or by UMD PDU or its is corresponding
RLC SDU is segmented and sends after modifying RLC head portion to lower layer.
RLC data PDU is stored in the realization machine sent in buffer area described in the above exemplary embodiments of the disclosure
System allows AM RLC entity transmitting terminal or UM RLC sending entity straight when receiving the data from lower layer and sending instruction
The RLC data PDU that connecing will be stored in transmission buffer area is sent to lower layer, reduces data transmission delay.
In a further exemplary embodiment, RLC SDU and associated RLC head portion can be stored in hair by the RLC entity of UE
It send in buffer area.
Correspondingly, the technical solution proposition of the disclosure can be modified as follows in 3GPP TS38.322 version 1.0.0
5.1.3.1.1 the process flow about RLC transmitting terminal is saved.
AM RLC entity receives the RLC SDU for coming from upper layer entity (for example, PDCP entity), and raw for the RLC SDU
At the RLC head portion of the value of Serial No. TX_Next, (or the sequence number SN for for RLC SDU relating value being TX_Next generates RLC head
Portion).The RLC head portion and/or RLC SDU are stored in and sent in buffer area.The value that TX_Next is arranged is TX_Next+1
(that is, the value of TX_Next is increased by 1).
Optionally, when needing to be segmented RLC SDU, AM RLC entity modifies the corresponding head the RLC SDU,
And by modified head together with RLC SDU fragmented storage send buffer area in.
Optionally, when submitting AMD PDU to lower layer, AM RLC entity transmitting terminal is that RLC SDU or RLC SDU segmentation increase
Add RLC head portion.Alternatively, when submitting AMD PDU to lower layer, AM RLC entity transmitting terminal sets the sequence number of AM PDU to pair
Answer the associated sequence number of RLC SDU.Alternatively, when submitting AMD PDU to lower layer, AM RLC entity transmitting terminal be RLC SDU or
RLC SDU segmentation increases RLC head portion to construct AMD PDU.Alternatively, if the AMD PDU for being delivered to lower layer includes RLC SDU points
Section then sets the sequence number of AMD PDU to the sequence number of corresponding RLC SDU.
Hereinafter with reference to Fig. 5, the structure of UE according to an exemplary embodiment of the present invention is described.Fig. 5 is schematically
Show the structural block diagram according to an exemplary embodiment of the present invention executed for handling the UE of the method for RLC SDU.UE 500
It can be used for executing the method 200 described with reference to Fig. 2.For simplicity, herein only to the UE according to disclosure exemplary embodiment
Schematic structure be described, and the details being described in detail in method 200 described in reference to Fig. 2 is omitted as preceding.
As shown in figure 5, UE 500 includes the communication interface 501 for PERCOM peripheral communication；Processing unit or processor 502, should
Processor 502 can be the combination of individual unit or multiple units, for executing the different step of method；Memory 503,
In be stored with computer executable instructions, described instruction can be such that the RLC entity of UE 500 holds when being executed by processor 502
Row following procedure:
RLC data protocol data unit PDU is generated by increasing RLC head portion to the RLC SDU from upper layer entity；With
And
RLC data PDU generated is stored in and is sent in buffer area.
Described instruction can also make the RLC entity of UE 500 execute following procedure when being executed by processor 502:
When RLC entity, which receives the data from lower course of solid, sends instruction, will in sending buffer area the RLC that stores
Data PDU is sent to lower course of solid.
In one exemplary embodiment, if the RLC data PDU stored in sending buffer area is sent more than the data
Indicated transmittable size of data in instruction is then segmented the RLC data PDU and is sent to after modifying RLC head portion
Lower course of solid.
As previously mentioned, the RLC entity can be AM RLC entity, it is also possible to UM RLC sending entity.In RLC entity
It is in the exemplary embodiment of AM RLC entity, the above process specifically executes at the transmitting terminal of AM RLC entity；And in RLC reality
Body is in the exemplary embodiment of UM RLC entity, and the above process specifically executes at UM RLC sending entity.
In one exemplary embodiment, described instruction can also make the RLC entity of UE500 when being executed by processor 502
Execute following procedure:
Maintenance sends state variable TX_Next at AM RLC entity, and the transmission state variable will distribution for storing
To the sequence number of next RLC SDU received from upper layer entity；And
AM RLC entity is received from upper layer entity the value of currently transmitted state variable TX_Next is associated with one
The value of TX_Next is increased by 1 after RLC SDU.
Reaching separation carrying (split bearer) in Adhoc#2 meeting of RAN2NR can use and single carrier class
As data prediction；Reaching NR UE in RAN2#99 meeting can be before receiving lower layer's request (or data sending request)
Carrying is separated to uplink and carries out data prediction, and will be counted before receiving the request from lower course of solid (for example, MAC entity)
Lower course of solid is submitted to according to (i.e. pretreated data).From the point of view of rlc layer, RLC entity is received from such as PDCP entity
Data RLC SDU, and generate RLC head portion (or be associated with for the RLC SDU one sequence number).In the buffer area of RLC entity
In (buffer area can be send buffer area), it is understood that there may be not yet RLC SDU (or the not yet inteerelated order in generation RLC head portion
The RLC SDU of row number) and generated the RLC SDU or RLC data PDU in RLC head portion.However currently, not in RLC reality
The transmitting terminal of RLC entity is answered when body receives the instruction of the specific RLC SDU of discarding from PDCP entity (or upper layer entity)
Which data in the discarding buffer area propose solution.
For this purpose, the present disclosure proposes executed at UE for abandoning the scheme of RLC SDU.
Hereinafter with reference to Fig. 6, to according to disclosure exemplary embodiment executed at UE for abandoning RLC SDU's
Method is described.
Fig. 6 shows the method 600 according to an exemplary embodiment of the present invention that be used to abandon RLC SDU executed at UE
Flow chart.Specifically, it is executed at RLC entity of the method 600 in UE.As previously mentioned, the RLC entity can be AM RLC
Entity is also possible to UM RLC sending entity.In the exemplary embodiment that RLC entity is AM RLC entity, method 600 is specific
It is executed at the transmitting terminal of AM RLC entity；And in the exemplary embodiment that RLC entity is UM RLC entity, method 600 has
Body executes at UM RLC sending entity.
As shown in fig. 6, method 600 may include step S601 to S606.
In step s 601, RLC entity can receive the specific RLC of discarding from upper layer entity (for example, PDCP entity)
The instruction of SDU.
RLC entity receive the specific RLC SDU of discarding from upper layer entity (for example, PDCP entity) instruction it
Afterwards, RLC entity can stop as RLC SDU distribution or inteerelated order row number from upper layer.
In step S602, RLC entity can determine any point of the specific RLC SDU of specific RLC SDU or described
Whether section has generated corresponding RLC data PDU, also can be described as, determines the specific specific RLC of RLC SDU or described
Whether any segmentation of SDU is mapped to corresponding RLC data PDU.
If any segmentation of the specific RLC SDU of specific RLC SDU or described not yet generates corresponding RLC data
PDU thens follow the steps S603, and wherein RLC entity can abandon the specific RLC SDU.
If at least one segmentation of the specific RLC SDU of specific RLC SDU or described has generated corresponding RLC
Data PDU thens follow the steps S604, and wherein RLC entity can determine the specific RLC SDU's of specific RLC SDU or described
Whether the corresponding RLC data PDU that any segmentation generates has sent to lower layer.
If the corresponding RLC data PDU that any segmentation of the specific RLC SDU of specific RLC SDU or described generates is still
It is not sent to lower layer, thens follow the steps S605, wherein RLC entity abandons the RLC SDU and/or corresponding RLC data PDU.
Specifically, if RLC SDU has been mapped as RLC data PDU, but the RLC data PDU is not yet sent out to lower layer
It send, then abandons the RLC SDU and/or corresponding RLC data PDU.Alternatively, if RLC SDU has been mapped as RLC data
PDU, but the head of the RLC data PDU or RLC data PDU does not include sequence number, then described in the discarding of UM RLC sending entity
RLC data PDU and/or RLC SDU.
If at least one segmentation of RLC SDU has been mapped as RLC data PDU, but any of the RLC SDU is divided
The RLC data PDU that is mapped to of section is not yet sent to lower layer, then abandon the RLC SDU and/or RLC SDU segmentation and/
Or the corresponding RLC data PDU of segmentation of the RLC SDU, or abandon all of the RLC SDU and/or RLC SDU
Segmentation and/or the corresponding RLC data PDU of all segmentations.Alternatively, if RLC SDU has been mapped as RLC data PDU, and it is described
The head of RLC data PDU or RLC data PDU includes sequence number, but the RLC number that any subsection compression of the RLC SDU arrives
The corresponding RLC data of first segmentation of lower layer or the RLC SDU (or corresponding RLC data PDU) are not yet submitted to according to PDU
PDU is not yet sent to lower layer, then UM RLC sending entity abandons all segmentations or the corresponding RLC number of segmentation of the RLC SDU
According to PDU and/or RLC SDU.
Next, method 600 can also include: the RLC SDU being dropped or its segmentation be associated with sequence number or
In the case that corresponding RLC data PDU is dropped, by the RLC SDU being dropped or its segmentation or corresponding RLC data
The corresponding sequence number of PDU is reassigned to other RLC SDU or its segmentation or corresponding RLC data PDU；Alternatively, being sequence number
The RLC SDU bigger than the sequence number of the RLC SDU being dropped or its segmentation or corresponding RLC data PDU and/or its segmentation
And/or corresponding RLC data PDU redistributes sequence number, to avoid the sequence number interval (SN gap) of receiving end.
Next, the value that method 600 can also include: setting TX_Next is TX_Next-1, i.e., the value of TX_Next is subtracted
Few 1.
Next, method 600 can also include: to continue as RLC SDU distribution or inteerelated order row number from upper layer entity.
Optionally, it in step S603, if the RLC SDU being dropped has been associated with sequence number, can hold
Row above-mentioned the step of redistributing sequence number, redistributes sequence number and the step of value of TX_Next is TX_Next-1 is arranged.
Optionally, if at least one of the specific RLC SDU of specific RLC SDU or described is segmented the corresponding of generation
RLC data PDU is sent to lower layer, thens follow the steps S606, wherein RLC entity does not abandon the corresponding of the specific RLC SDU
RLC data PDU.
Hereinafter with reference to Fig. 7, the structure of UE according to an exemplary embodiment of the present invention is described.Fig. 7 is schematically
Show the structural block diagram according to an exemplary embodiment of the present invention executed for abandoning the UE of the method for RLC SDU.UE 700
It can be used for executing the method 600 described with reference to Fig. 6.For simplicity, herein only to the UE according to disclosure exemplary embodiment
Schematic structure be described, and the details being described in detail in method 600 described in reference to Fig. 6 is omitted as preceding.Such as Fig. 7
Shown, UE 700 includes the communication interface 701 for PERCOM peripheral communication；Processing unit or processor 702, the processor 702 can be with
It is the combination of individual unit or multiple units, for executing the different step of method；Memory 703, wherein being stored with calculating
Machine executable instruction, described instruction can make the RLC entity of UE 700 execute following procedure when being executed by processor 702:
Receive the instruction of the specific RLC SDU of discarding from upper layer entity；And
Corresponding RLC has been generated at least one segmentation for determining the specific RLC SDU of specific RLC SDU or described
Data PDU, in the case that still the RLC data PDU is not yet sent to lower layer, the RLC data PDU is abandoned.
In one exemplary embodiment, described instruction can also make the RLC entity of UE700 when being executed by processor 702
Execute following procedure:
The RLC SDU being dropped or its segmentation be associated with sequence number or corresponding RLC data PDU is dropped
In the case of, the RLC SDU being dropped or its segmentation or the corresponding sequence number of corresponding RLC data PDU are reassigned to
Other RLC SDU or its segmentation or corresponding RLC data PDU；Or
Bigger than the sequence number of the RLC SDU being dropped or its segmentation or corresponding RLC data PDU for sequence number
RLC SDU and/or its segmentation and/or corresponding RLC data PDU redistribute sequence number.
As previously mentioned, the RLC entity can be AM RLC entity, it is also possible to UM RLC sending entity.In RLC entity
It is in the exemplary embodiment of AM RLC entity, the above process specifically executes at the transmitting terminal of AM RLC entity；And in RLC reality
Body is in the exemplary embodiment of UM RLC entity, and the above process specifically executes at UM RLC sending entity.
It should be noted that the method and discarding RLC for handling RLC SDU executed at UE described in the disclosure
The process of SDU also can be applied to the RLC entity of base station.
The computer executable instructions or program operated in equipment according to the present invention can be through control center
Processing unit (CPU) makes computer realize the program of the embodiment of the present invention function.The program or the letter handled by the program
Breath can be temporarily stored in volatile memory (such as random access memory ram), hard disk drive (HDD), non-volatile deposit
In reservoir (such as flash memory) or other storage systems.
For realizing the computer executable instructions or program of various embodiments of the present invention function, can recorde can in computer
It reads on storage medium.It can be by making computer system read the program that be recorded in the recording medium and executing these programs
To realize corresponding function.So-called " computer system " herein can be built-in the computer system in the equipment, can be with
Including operating system or hardware (such as peripheral equipment)." computer readable storage medium " can be semiconductor recording medium, optics
Recording medium, magnetic recording medium, the in short-term recording medium of dynamic memory program or any other computer-readable record are situated between
Matter.
It can be by circuit (for example, monolithic or more with the various feature or function modules of equipment in the above-described embodiments
Piece integrated circuit) Lai Shixian or execution.The circuit for being designed to carry out this specification described function may include general place
Reason device, digital signal processor (DSP), specific integrated circuit (ASIC), field programmable gate array (FPGA) or other can compile
Any combination of journey logical device, discrete door or transistor logic, discrete hardware component or above-mentioned device.General procedure
Device can be microprocessor, be also possible to any existing processor, controller, microcontroller or state machine.Foregoing circuit can
To be digital circuit, it is also possible to analog circuit.There is the new of the existing integrated circuit of substitution because of the progress of semiconductor technology
Integrated circuit technique in the case where, these new integrated circuit techniques also can be used in one or more embodiments of the invention
To realize.
In addition, the present invention is not limited to the above embodiments.Although it have been described that the various examples of the embodiment, but
The present invention is not limited thereto.The fixation or non-mobile electronic equipment for being mounted on indoor or outdoors may be used as terminal device or logical
Equipment is believed, such as AV equipment, cooking apparatus, cleaning equipment, air-conditioning, office equipment, automatic vending machine and other household electrical appliance
Deng.
As above, the embodiment of the present invention is described in detail by reference to attached drawing.But specific structure not office
It is limited to above-described embodiment, the present invention also includes any design change without departing from present subject matter.Furthermore it is possible in claim
In the range of the present invention is variously changed, it is obtained by being appropriately combined technological means disclosed in different embodiments
Embodiment is also included in the technical scope of the present invention.In addition, with the component of same effect described in above-described embodiment
It can be substituted for each other.
Claims (10)
1. a kind of method executed at user equipment (UE), comprising:
At the wireless spread-spectrum technology RLC entity of UE,
RLC data protocol data list is generated by increasing RLC head portion to the RLC service data unit SDU from upper layer entity
First PDU；And
RLC data PDU generated is stored in and is sent in buffer area.
2. according to the method described in claim 1, further include:
When RLC entity, which receives the data from lower course of solid, sends instruction, will in sending buffer area the RLC data that store
PDU is sent to lower course of solid.
3. according to the method described in claim 2, wherein
If the RLC data PDU stored in sending buffer area is more than that the data send transmittable number indicated in instruction
According to size, then the RLC data PDU is segmented and is sent to lower course of solid after modifying RLC head portion.
4. according to the method in any one of claims 1 to 3, wherein the RLC entity includes:
Affirmation mode AM RLC entity, and/or
Unacknowledged Mode UM RLC sending entity.
5. according to the method described in claim 4, further include:
It is safeguarded at AM RLC entity and sends state variable TX_Next, the transmission state variable TX_Next will divide for storing
The sequence number of the next RLC SDU received from upper layer entity of dispensing；And
The value of currently transmitted state variable TX_Next is being associated with the RLC received from upper layer entity by AM RLC entity
The value of TX_Next is increased by 1 after SDU.
6. a kind of method executed at user equipment (UE), comprising:
At the wireless spread-spectrum technology RLC entity of UE,
Receive the instruction of the specific RLC service data unit SDU of discarding from upper layer entity；And
Corresponding RLC data have been generated at least one segmentation for determining the specific RLC SDU of specific RLC SDU or described
PDU, in the case that still the RLC data PDU is not yet sent to lower course of solid, the RLC data PDU is abandoned.
7. according to the method described in claim 6, further include: sequence has been associated in the RLC SDU being dropped or its segmentation
Number or in the case that corresponding RLC data PDU is dropped,
The RLC SDU being dropped or its segmentation or the corresponding sequence number of corresponding RLC data PDU are reassigned to other
RLC SDU or its segmentation or corresponding RLC data PDU, or
For the sequence number RLC bigger than the sequence number of the RLC SDU being dropped or its segmentation or corresponding RLC data PDU
SDU and/or its segmentation and/or corresponding RLC data PDU redistribute sequence number.
8. the method according to any one of claim 6 to 7, wherein the RLC entity includes:
Affirmation mode AM RLC entity, and/or
Unacknowledged Mode UM RLC sending entity.
9. a kind of user equipment (UE), comprising:
Communication interface is configured to communicate；
Processor；And
Memory is stored with computer executable instructions, and described instruction executes the UE according to power when being executed by processor
Benefit require any one of 1 to 8 described in method.
10. a kind of computer-readable medium, is stored with instruction on it, described instruction when executed by the processor, makes the place
It manages device and executes method according to any one of claim 1 to 8.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710927143.0A CN109561465A (en) | 2017-09-27 | 2017-09-27 | Service data unit processing method, discarding method, corresponding user equipment and computer-readable medium |
| TW107125242A TW201921977A (en) | 2017-09-27 | 2018-07-20 | Service data unit processing method and discarding method, corresponding user equipment and computer-readable medium |
| PCT/CN2018/107602 WO2019062760A1 (en) | 2017-09-27 | 2018-09-26 | Service data unit processing method and discarding method, corresponding user equipment and computer-readable medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710927143.0A CN109561465A (en) | 2017-09-27 | 2017-09-27 | Service data unit processing method, discarding method, corresponding user equipment and computer-readable medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109561465A true CN109561465A (en) | 2019-04-02 |
Family
ID=65864066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710927143.0A Pending CN109561465A (en) | 2017-09-27 | 2017-09-27 | Service data unit processing method, discarding method, corresponding user equipment and computer-readable medium |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN109561465A (en) |
| TW (1) | TW201921977A (en) |
| WO (1) | WO2019062760A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024032354A1 (en) * | 2022-08-09 | 2024-02-15 | 华为技术有限公司 | Data processing method and apparatus |
| WO2024032352A1 (en) * | 2022-08-09 | 2024-02-15 | 华为技术有限公司 | Data processing method and apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101981962B (en) * | 2008-03-31 | 2013-07-24 | 日本电气株式会社 | Concealment processing device, concealment processing method, and concealment processing program |
| JP5201265B2 (en) * | 2009-05-27 | 2013-06-05 | 日本電気株式会社 | Wireless communication apparatus and data receiving method |
| CN102469511A (en) * | 2010-11-15 | 2012-05-23 | 中兴通讯股份有限公司 | Packet data convergence protocol layer handling data method and system |
-
2017
- 2017-09-27 CN CN201710927143.0A patent/CN109561465A/en active Pending
-
2018
- 2018-07-20 TW TW107125242A patent/TW201921977A/en unknown
- 2018-09-26 WO PCT/CN2018/107602 patent/WO2019062760A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024032354A1 (en) * | 2022-08-09 | 2024-02-15 | 华为技术有限公司 | Data processing method and apparatus |
| WO2024032352A1 (en) * | 2022-08-09 | 2024-02-15 | 华为技术有限公司 | Data processing method and apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019062760A1 (en) | 2019-04-04 |
| TW201921977A (en) | 2019-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11395194B2 (en) | Indicating status of forwarded data | |
| RU2455776C2 (en) | Method and device for improving rlc for flexible size of pdu rlc | |
| KR101163875B1 (en) | Method and apparatus for generating radio link control protocol data units | |
| KR101296044B1 (en) | Method and apparatus for supporting segmentation of packets for uplink transmission | |
| CN110012454A (en) | User equipment and correlation technique | |
| TW200303148A (en) | Inter node B serving HS-DSCH cell change mechanism in high speed wireless communication system | |
| CN101682916B (en) | Send RLC PDU and the RLC entity of the method for distributing radio resource and mobile communication in mobile communication system | |
| CN110506404A (en) | A kind of data receiving state method for reporting and device | |
| KR102625128B1 (en) | Method for transmitting data when changing pdcp version in wireless communication system and apparatus thereof | |
| US20120155431A1 (en) | Apparatus and method for forwarding handover data in wireless communication system | |
| WO2016115916A1 (en) | Data packet retransmission method and apparatus | |
| CN109561465A (en) | Service data unit processing method, discarding method, corresponding user equipment and computer-readable medium | |
| KR102506464B1 (en) | A method and an apparatus for controlling a transmission of a packet for reducing a latency in a wireless communication system | |
| US11258721B2 (en) | Radio link control (RLC) acknowledged mode (AM) data reception | |
| KR20180107664A (en) | Method for estimating data rate of cooperating base station in dual-connectivity network and base station applying same | |
| KR102609328B1 (en) | Wireless communication method and device | |
| CN108200605B (en) | Data transmission method and device for base station | |
| CN110351021A (en) | Affirmation mode RLC entity and its transmission/repeating method, communication equipment | |
| EP2273844A1 (en) | Packet data transmitting/receiving apparatus using two sublayers | |
| CN107645790A (en) | A kind of transmission control protocol TCP link method for building up and base station | |
| CN109728876A (en) | Wireless communications method and equipment | |
| CN110138512A (en) | Wireless communications method and equipment | |
| CN109802767A (en) | Wireless communications method and equipment | |
| JP2014220612A (en) | Radio base station and mobile communication method | |
| KR20030008553A (en) | Apparatus for retransmitting user data and method thereof in high speed data packet access system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190606 Address after: Japan's Osaka City. The area of Sakai Sakai Cho 1 GA 590-8522 Applicant after: Sharp Corporation Applicant after: Hongying Innovation Co., Ltd. Address before: Japan's Osaka City. The area of Sakai Sakai Cho 1 GA 590-8522 Applicant before: Sharp Corporation |
|
| TA01 | Transfer of patent application right | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190402 |
|
| WD01 | Invention patent application deemed withdrawn after publication |