CN109729554A - Uplink strengthening data transmission method, device and user equipment - Google Patents
Uplink strengthening data transmission method, device and user equipment Download PDFInfo
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- CN109729554A CN109729554A CN201711036787.7A CN201711036787A CN109729554A CN 109729554 A CN109729554 A CN 109729554A CN 201711036787 A CN201711036787 A CN 201711036787A CN 109729554 A CN109729554 A CN 109729554A
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Abstract
The present invention provides a kind of uplink strengthening data transmission method, device and user equipment.The described method includes: if the partial segments PDU of RLC PDU is only had sent to network side equipment in current TTI, after the status PDU comprising retransmission instruction for receiving network side equipment transmission, the remaining segment PDU of the RLC PDU is sent to network side equipment in next TTI；Receive the successful message of reception that network side equipment is sent.The present invention can be avoided network side equipment and user equipment abandons correct data, so that RLC be avoided to reset the waste with interface-free resources.
Description
Technical field
The present invention relates to fields of communication technology more particularly to a kind of uplink strengthening data transmission method, device and user to set
It is standby.
Background technique
LTE wireless access system is divided into three layers: first layer (L1) is physical layer (PHY, Physical), and the second layer (L2) is
Media Access Control (Media Access Control, MAC), control sub layer of wireless link (Radio Link
Control, RLC) and packet data convergence protocol sublayer (Packet Data Convergence Protocol, PDCP), the
Three layers (L3) are radio resource control layer (Radio Resource Control, RRC).
Rlc layer is located on MAC layer, belongs to a part of L2, provides segmentation (transmitting terminal)/weight for user and control data
Group (receiving end) and re-transmission business.RLC PDU (Protocol Data Unit, protocol Data Unit) is rlc layer protocol data
Unit, L2 uplink enhancing technology can be set uplink RLC PDU be elongated mode, when MAC layer is configured to MAC-i entity, UE into
(Enhanced Dedicated Channel Transport Format Combination enhances dedicated row uplink E-TFC
Control channel transformat combination) selection when, RB (Radio Bearer, radio bearer) upstream data can produce segmentation
RLC PDU, the i.e. PDU only have sent one at current TTI (Transmission Time Interval, Transmission Time Interval)
Point, remaining data needs are sent in next TTI.
RLC PDU sends priority under affirmation mode are as follows: the priority for controlling PDU is higher than the priority for retransmitting PDU, retransmits
The priority of PDU is higher than the priority of new biography PDU.If some RB, which is existed simultaneously, retransmits PDU and segmentation PDU, according to current association
View description, the side UE, which must preferentially be sent, retransmits PDU, then retransmits segmentation PDU.So, since network side is not even
Continuous TTI is complete by all Fractional Collections for being segmented PDU, and according to MAC-I PDU data packet protocol, net side can be correctly connecing
The segmentation PDU received is abandoned, while UE must also abandon not sent segmentation PDU, and must retransmit the PDU, in this way
It will cause the unnecessary wasting of resources, the flow chart that first transmission re-transmission PDU retransmits segmentation PDU is as shown in Figure 1.And in network
Signal is weak, authorization of service hour, will lead to segmentation PDU and retransmits always, will ultimately result in RLC Reset (RLC reset), influence UE
Data transmission, the flow chart that UE triggers Reset are as shown in Figure 2.
Summary of the invention
Uplink strengthening data transmission method, device and user equipment provided by the invention, can be avoided network side equipment and
User equipment abandons correct data, so that RLC be avoided to reset the waste with interface-free resources.
In a first aspect, the present invention provides a kind of uplink strengthening data transmission method, which comprises
If only having sent the partial segments PDU of RLC PDU to network side equipment in current TTI, network side is being received
After the status PDU comprising retransmission instruction that equipment is sent, send the RLC PDU's to network side equipment in next TTI
Remaining segment PDU；
Receive the successful message of reception that network side equipment is sent.
Optionally, the information of the fragmentation state field of the segmentation PDU is for notifying RLC received by network side equipment
PDU is segmentation PDU.
Optionally, after the remaining segment PDU for sending the RLC PDU to network side equipment described, the method is also
It include: that new RLC data PDU is sent to network side equipment.
Second aspect, the present invention provide a kind of uplink strengthening data transmitting device, and described device includes:
First transmission unit, if the partial segments for only having sent RLC PDU to network side equipment in current TTI
PDU, after the status PDU comprising retransmission instruction for receiving network side equipment transmission, in next TTI to network side equipment
Send the remaining segment PDU of the RLC PDU；
Receiving unit, for receiving the successful message of reception of network side equipment transmission.
Optionally, the information of the fragmentation state field of the segmentation PDU is for notifying RLC received by network side equipment
PDU is segmentation PDU.
Optionally, described device further include:
Second transmission unit, for sending the residue of the RLC PDU to network side equipment in first transmission unit
It is segmented after PDU, new RLC data PDU is sent to network side equipment.
The third aspect, the present invention provide a kind of user equipment, and the user equipment includes above-mentioned uplink strengthening data transmission
Device.
Uplink strengthening data transmission method, device and user equipment provided in an embodiment of the present invention, if at current TTI
To network side equipment have sent segmentation PDU, receive network side transmission need to retransmit the message of PDU after, next
TTI preferentially sends remaining segmentation PDU to network side equipment, retransmits other data.Compared with prior art, the present invention passes through
It is preferential to send remaining segment PDU, it can be avoided network side equipment and user equipment abandon correct data, to avoid RLC multiple
The waste of position and interface-free resources.
Detailed description of the invention
Fig. 1 is that preferential send of an implementation retransmits the flow chart that PDU retransmits remaining segment PDU；
Fig. 2 is the flow chart that an embodiment triggers RLC Reset；
Fig. 3 is the flow chart of one embodiment of the invention uplink strengthening data transmission method；
Fig. 4 is the structural schematic diagram of MAC-is-PDU；
Fig. 5 is the structural schematic diagram of MAC-i PDU；
Fig. 6 is the flow chart of another embodiment of the present invention uplink strengthening data transmission method；
Fig. 7 is the structural schematic diagram of one embodiment of the invention uplink strengthening data transmitting device.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
It is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The present invention provides a kind of uplink strengthening data transmission method, as shown in Figure 3, which comprises
If S11, the partial segments PDU for only having sent RLC PDU to network side equipment in current TTI, are receiving net
After the status PDU comprising retransmission instruction that network side apparatus is sent, the RLC is sent to network side equipment in next TTI
The remaining segment PDU of PDU；
S12, the successful message of reception that network side equipment is sent is received.
Optionally, the information of the fragmentation state field of the segmentation PDU is for notifying RLC received by network side equipment
PDU is segmentation PDU.
Optionally, after the remaining segment PDU for sending the RLC PDU to network side equipment described, the method is also
It include: that new RLC data PDU is sent to network side equipment.
Rlc layer is located on MAC layer, belongs to a part of L2, provides segmentation (transmitting terminal)/weight for user and control data
Group (receiving end) and re-transmission business.Segmentation is exactly that the different high-rise PDU of length is segmented into lesser RLC load list in transmitting terminal
First SDU (Service Data Unit, Service Data Unit), one or more MAC-d/c PDU or MAC-d/c PDU multiplexing
In MAC-is PDU.Recombination is exactly to package data for MAC PDU (mac-layer protocol data cell) in receiving end, and one
A or multiple MAC-is-PDU are multiplexed into a MAC-i PDU.The structural schematic diagram of MAC-is-PDU and MAC-i PDU is distinguished
As shown in Figure 4 and Figure 5.
The segmentation shape of the value instruction PDU of the fragmentation state field (Segmentation Status, SS) of PDU is segmented in Fig. 4
State will send a status PDU to UE, refer to when the SS field information for the PDU that network side receives is designated as segmentation PDU
Show that UE retransmits the PDU.
The present invention is specifically described with specific example below, flow chart is as shown in Figure 6.
It is elongated mode that UE, which sends PDU N and PDU N-1, PDU N to network side, is segmented into Segment1, Segment2
And Segment3, when UE only has sent Segment1 and Segment2 in current TTI, network side equipment is sent to UE to be required to retransmit
Status PDU, UE can first send Segment3 in next TTI, retransmit PDU N-1.In this way, network side is according to MAC-I PDU
Segmentation PDU group is bundled into function by the SS information of data pack protocol and segmentation PDU, so that discarding and the sky of segmentation PDU will not be caused
The waste of mouth resource.
Uplink strengthening data transmission method provided in an embodiment of the present invention, if only sent out to network side equipment in current TTI
Sent segmentation PDU, receive network side transmission need to retransmit the message of PDU after, in next TTI preferentially to network side
Equipment sends remaining segmentation PDU, retransmits other data.Compared with prior art, the present invention is by preferentially sending remaining point
Section PDU, can be avoided network side equipment and user equipment abandons correct data, so that RLC be avoided to reset and interface-free resources
Waste.
The embodiment of the present invention also provides a kind of uplink strengthening data transmitting device, as shown in fig. 7, described device includes:
First transmission unit 11, if the partial segments for only having sent RLC PDU to network side equipment in current TTI
PDU, after the status PDU comprising retransmission instruction for receiving network side equipment transmission, in next TTI to network side equipment
Send the remaining segment PDU of the RLC PDU；
Receiving unit 12, for receiving the successful message of reception of network side equipment transmission.
Optionally, the information of the fragmentation state field of the segmentation PDU is for notifying RLC received by network side equipment
PDU is segmentation PDU.
Optionally, described device further include:
Second transmission unit, for sending the residue of the RLC PDU to network side equipment in first transmission unit
It is segmented after PDU, new RLC data PDU is sent to network side equipment.
Uplink strengthening data transmitting device provided in an embodiment of the present invention, if only sent out to network side equipment in current TTI
Sent segmentation PDU, receive network side transmission need to retransmit the message of PDU after, in next TTI preferentially to network side
Equipment sends remaining segmentation PDU, retransmits other data.Compared with prior art, the present invention is by preferentially sending remaining point
Section PDU, can be avoided network side equipment and user equipment abandons correct data, so that RLC be avoided to reset and interface-free resources
Waste.
The embodiment of the present invention also provides a kind of user equipment, and the user equipment includes above-mentioned uplink strengthening data transmission dress
It sets.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in a computer-readable storage medium
In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those familiar with the art, all answers
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (7)
1. a kind of uplink strengthening data transmission method, which is characterized in that the described method includes:
If only having sent the partial segments PDU of RLC PDU to network side equipment in current TTI, network side equipment is being received
After the status PDU comprising retransmission instruction sent, the residue of the RLC PDU is sent to network side equipment in next TTI
It is segmented PDU；
Receive the successful message of reception that network side equipment is sent.
2. the method according to claim 1, wherein the information of the fragmentation state field of the segmentation PDU is used for
Notify that RLC PDU received by network side equipment is segmentation PDU.
3. the method according to claim 1, wherein sending the RLC PDU's to network side equipment described
After remaining segment PDU, the method also includes: new RLC data PDU is sent to network side equipment.
4. a kind of uplink strengthening data transmitting device, which is characterized in that described device includes:
First transmission unit, if the partial segments PDU for only having sent RLC PDU to network side equipment in current TTI,
After the status PDU comprising retransmission instruction for receiving network side equipment transmission, institute is sent to network side equipment in next TTI
State the remaining segment PDU of RLC PDU；
Receiving unit, for receiving the successful message of reception of network side equipment transmission.
5. device according to claim 4, which is characterized in that the information of the fragmentation state field of the segmentation PDU is used for
Notify that RLC PDU received by network side equipment is segmentation PDU.
6. device according to claim 4, which is characterized in that described device further include:
Second transmission unit, for sending the remaining segment of the RLC PDU to network side equipment in first transmission unit
After PDU, new RLC data PDU is sent to network side equipment.
7. a kind of user equipment, which is characterized in that the user equipment includes upper as described in any one of claim 4 to 6
Row enhancing data transmission device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711036787.7A CN109729554B (en) | 2017-10-30 | 2017-10-30 | Uplink enhanced data transmission method and device and user equipment |
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| CN201711036787.7A CN109729554B (en) | 2017-10-30 | 2017-10-30 | Uplink enhanced data transmission method and device and user equipment |
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| CN109729554A true CN109729554A (en) | 2019-05-07 |
| CN109729554B CN109729554B (en) | 2022-03-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024026746A1 (en) * | 2022-08-03 | 2024-02-08 | Apple Inc. | Resource-saving mode for transmission of pdu sets |
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