CN110121193A - A kind of inter-layer data transmission method, device, medium and equipment - Google Patents
A kind of inter-layer data transmission method, device, medium and equipment Download PDFInfo
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- CN110121193A CN110121193A CN201810116144.1A CN201810116144A CN110121193A CN 110121193 A CN110121193 A CN 110121193A CN 201810116144 A CN201810116144 A CN 201810116144A CN 110121193 A CN110121193 A CN 110121193A
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- sdap
- sublayer
- data
- pdcp
- sdu
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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
- H04L1/1621—Group acknowledgement, i.e. the acknowledgement message defining a range of identifiers, e.g. of sequence numbers
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- 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
Abstract
The present invention relates to wireless communication technology field more particularly to a kind of inter-layer data transmission method, device, medium and equipment.When carrying out data transmission between PDCP sublayer and SDAP sublayer, PDCP sublayer receives the data that SDAP sublayer is sent and sends message, the data send in message and carry identification information of the SDAP sublayer from the received data packet SDAP SDU in its upper layer, the SDAP SDU corresponds to the data packet SDAP PDU that the SDAP sublayer is sent to the PDCP sublayer, and the identification information of the SDAP SDU is that can be identified for that the information of the SDAP SDU.PDCP sublayer sends message according to the data received, can determine the identification information of the corresponding SDAP SDU of the SDAP PDU received, PDCP sublayer is allowed rapidly and accurately to identify the source of the SDAP PDU received.
Description
Technical field
The present invention relates to wireless communication technology field more particularly to a kind of inter-layer data transmission method, device, medium and set
It is standby.
Background technique
Currently, introducing service data adapting protocol (SDAP, Service in the 5th third generation mobile communication network (5G)
Data Adaptation Protocol) sublayer (subsequent referred to as SDAP sublayer), SDAP protocol sublayers are located at packet data remittance
The upper layer of poly- agreement (PDCP, Packet Data Convergence Protocol) sublayer (subsequent referred to as PDCP sublayer).
In 5G communication network, propose flexible dual link and multi-connection demand, SDAP sublayer as access layer (AS,
Access Stratum) protocol sublayers unrelated with cell of eating dishes without rice or wine, it can be provided more for the robustness of user data transmission
More supports.
Currently, SDAP can not be recognized accurately in PDCP sublayer when SDAP sublayer and PDCP sublayer carry out inter-layer data transmission
The source of sublayer transmission data.
Summary of the invention
The embodiment of the present invention provides a kind of inter-layer data transmission method, device, medium and equipment, for SDAP sublayer with
When PDCP sublayer carries out inter-layer data transmission, PDCP sublayer is allowed rapidly and accurately to identify that SDAP sublayer sends data packet
Source.
A kind of inter-layer data transmission method, which comprises
Packet Data Convergence Protocol PDCP sublayer receives the data transmission that service data adapting protocol SDAP sublayer is sent and disappears
Breath, the data send in message and carry identification information of the SDAP sublayer from the received data packet SDAP SDU in its upper layer,
The SDAP SDU corresponds to the data packet SDAP PDU that the SDAP sublayer is sent to the PDCP sublayer, the knowledge of the SDAP SDU
Other information is that can be identified for that the information of the SDAP SDU.
A kind of inter-layer data transmission method, which comprises
Service data adapting protocol SDAP sublayer sends data to Packet Data Convergence Protocol PDCP sublayer and sends message, institute
It states in data transmission message and carries identification information of the SDAP sublayer from the received data packet SDAP SDU in its upper layer, the SDAP
SDU corresponds to the data packet SDAP PDU that the SDAP sublayer is sent to the PDCP sublayer, the identification information of the SDAP SDU
For the information that can be identified for that the SDAP SDU.
A kind of inter-layer data transmitting device, the device are applied to Packet Data Convergence Protocol PDCP sublayer, described device packet
It includes:
Receiving module, the data for receiving the transmission of service data adapting protocol SDAP sublayer send message, the data
It sends in message and carries identification information of the SDAP sublayer from the received data packet SDAP SDU in its upper layer, the SDAP SDU couple
The identification information of the data packet SDAP PDU, the SDAP SDU that answer the SDAP sublayer to send to the PDCP sublayer are can
Identify the information of the SDAP SDU.
A kind of inter-layer data transmitting device, the device are applied to service data adapting protocol SDAP sublayer, described device packet
It includes:
Sending module sends message for sending data to Packet Data Convergence Protocol PDCP sublayer, and the data are sent
Identification information of the SDAP sublayer from the received data packet SDAP SDU in its upper layer is carried in message, which corresponds to institute
The identification information for stating data packet SDAP PDU, the SDAP SDU that SDAP sublayer is sent to the PDCP sublayer is that can be identified for that
The information of the SDAP SDU.
A kind of nonvolatile computer storage media, the computer storage medium are stored with executable program, this can hold
Line program is executed by processor the step of realizing the inter-layer data transmission method that PDCP sublayer side executes.
A kind of nonvolatile computer storage media, the computer storage medium are stored with executable program, this can hold
Line program is executed by processor the step of realizing the inter-layer data transmission method that SDAP sublayer side executes.
A kind of inter-layer data transmission device is applied to Packet Data Convergence Protocol PDCP sublayer, including transceiver, bus connect
Mouth, memory, the computer program of processor and storage on a memory, the processor execution are stored on the memory
Described program, wherein the transceiver, for receive service data adapting protocol SDAP sublayer transmission data transmission disappears
Breath, the data send in message and carry identification information of the SDAP sublayer from the received data packet SDAP SDU in its upper layer,
The SDAP SDU corresponds to the data packet SDAP PDU that the SDAP sublayer is sent to the PDCP sublayer, the knowledge of the SDAP SDU
Other information is that can be identified for that the information of the SDAP SDU.A kind of inter-layer data transmission device is applied to service data adapting protocol
SDAP sublayer, including transceiver, bus interface, memory, the computer program of processor and storage on a memory, the place
Reason device executes the described program being stored on the memory, wherein the transceiver is used for Packet Data Convergence Protocol
PDCP sublayer sends data and sends message, and the data send in message and carry the SDAP sublayer from the received data in its upper layer
The identification information of SDAP SDU is wrapped, which corresponds to the data packet SDAP that the SDAP sublayer is sent to the PDCP sublayer
PDU, the identification information of the SDAP SDU are that can be identified for that the information of the SDAP SDU.
The scheme provided according to embodiments of the present invention can exist when SDAP sublayer sends data transmission message to PDCP sublayer
The data send the identification information of data source corresponding to the data packet SDAP PDU for carrying in message and sending to PDCP sublayer,
That is identification information of the SDAP sublayer corresponding to SDAP PDU from the received data packet SDAP SDU in its upper layer, the SDAP SDU
Identification information be that can be identified for that the information of the SDAP SDU.PDCP sublayer sends message according to the data received, can be true
Surely the identification information of the corresponding SDAP SDU of the SDAP PDU received, identifies PDCP sublayer rapidly and accurately and connects
The source of the SDAP PDU received.
Detailed description of the invention
Fig. 1 is the interacting message schematic diagram of inter-layer data provided in an embodiment of the present invention transmission；
Fig. 2 is the step flow chart for the inter-layer data transmission method that the embodiment of the present invention one provides；
Fig. 3 is the structural schematic diagram of inter-layer data transmitting device provided by Embodiment 2 of the present invention；
Fig. 4 is the structural schematic diagram for the inter-layer data transmitting device that the embodiment of the present invention three provides；
Fig. 5 is the structural schematic diagram for the inter-layer data transmission device that the embodiment of the present invention six provides.
Specific embodiment
Scheme provided in an embodiment of the present invention is introduced when PDCP sublayer and SDAP sublayer carry out inter-layer data transmission
SDAP sublayer realizes data between PDCP sublayer and SDAP sublayer from the identification information of the received data packet SDAP SDU in its upper layer
The mutual mapping of packet, convenient for rapidly and accurately realizing data validation between the two.
In embodiments of the present invention, the primitive (message) between three PDCP sublayers and SDAP sublayer is defined, respectively
Data that SDAP sublayer is sent to PDCP sublayer send message, the data-acknowledge message that PDCP sublayer is sent to SDAP sublayer and
The data reconstruction that PDCP sublayer is sent to SDAP sublayer founds request message.Interacting message between PDCP sublayer and SDAP sublayer shows
Intention can be as shown in Figure 1.
By being sent in message in SDAP sublayer to the data that PDCP sublayer is sent, carries SDAP sublayer and sent out to PDCP sublayer
The data packet (SDAP PDU) sent is corresponding, SDAP sublayer is from the identification information of the received data packet in its upper layer (SDAP SDU),
The identification information of the SDAP SDU is that can be identified for that the information of the SDAP SDU, and PDCP sublayer can establish the SDAP received
The corresponding relationship of the identification information of PDU and SDAP SDU identifies PDCP sublayer rapidly and accurately and receives
The source of SDAP PDU.The corresponding relationship for establishing the identification information of the SDAP PDU and SDAP SDU received, then can build
The corresponding relationship of the identification information of vertical PDCP PDU and SDAP SDU, to realize data packet between SDAP sublayer and PDCP sublayer
Mutual phase mapping, convenient for rapidly and accurately realizing data validation between the two.
Since PDCP sublayer establishes the corresponding relationship of the identification information of PDCP PDU and SDAP SDU, PDCP sublayer to
When SDAP sublayer sends data-acknowledge message, each identification for sending the corresponding SDAP SDU of successful PDCP PDU can be carried
Information, the caching that the corresponding data packet of identification information of instruction SDAP sublayer release SDAP SDU occupies.In addition to that can discharge
Except the caching that the corresponding SDAP SDU of the identification information of SDAP SDU is occupied, due to also being deposited between SDAP SDU and SDAP PDU
In mapping relations, after corresponding SDAP SDU can also being determined according to the identification information of SDAP SDU, and then SDAP is determined
The corresponding SDAP PDU of SDU further discharges the caching that SDAP PDU is occupied.
When PDCP sublayer is re-established as transmitting terminal, since PDCP sublayer establishes PDCP PDU and SDAP SDU
Identification information corresponding relationship, PDCP sublayer to the data reconstruction that SDAP sublayer is sent stand request message in, hair can be carried
The successful PDCP PDU identification information of corresponding SDAP SDU is sent, instruction SDAP sublayer discharges corresponding spatial cache.May be used also
To carry the corresponding identification letter for sending order information SDAP SDU corresponding with the PDCP PDU of PDCP PDU for sending failure
Breath indicates that after PDCP sublayer re-establishes successfully, the identification of the SDAP SDU is retransmitted according to the transmission order information for SDAP sublayer
The corresponding SDAP PDU of information, so that PDCP sublayer after re-establishing successfully, can be believed according to what is received according to transmission sequence
The SDAP PDU retransmitted is ceased, retransmission process process is executed.
It should be noted that during re-establishing, being connect according to PDCP PDU is corresponding when PDCP sublayer is as receiving end
Order information is received, successively submits the corresponding transmission data packet of PDCP PDU (PDCP SDU) to its upper layer.
Other than being confirmed each other of data between PDCP sublayer and SDAP sublayer may be implemented, provided in the embodiment of the present invention
Scheme in, the transmission of data between PDCP sublayer and SDAP sublayer pertains only to the interaction between two sublayers, will not upload to
It eats dishes without rice or wine, does not influence space interface signaling process, will not be had an impact to eating dishes without rice or wine, and help to realize seamless switching of eating dishes without rice or wine.
The embodiment of the present invention is described in further detail with reference to the accompanying drawings of the specification.
Embodiment one,
As shown in Fig. 2, this method includes following for the inter-layer data transmission method flow chart that the embodiment of the present invention one provides
Step:
Step 101, SDAP sublayer send data and send message.
In this step, SDAP sublayer sends data to PDCP sublayer and sends message, and the data send in message and carry
Data packet (SDAP PDU) corresponding, described SDAP sublayer that the SDAP sublayer is sent to PDCP sublayer is received from its upper layer
The identification information of data packet (SDAP SDU), the identification information of the SDAP SDU are that can be identified for that the information of the SDAP SDU,
PDCP sublayer is allowed rapidly and accurately to identify the source of the SDAP PDU received.
SDAP sublayer, will be corresponding to the SDAP PDU that sent to PDCP sublayer by the identification information of transmission SDAP SDU
The identification information of data source is also sent to PDCP sublayer together.So that PDCP sublayer can establish the SDAP PDU that receives with
The corresponding relationship of the identification information of SDAP SDU, so that the corresponding relationship of the identification information of PDCP PDU and SDAP SDU is established,
The mutual phase mapping of data packet between SDAP sublayer and PDCP sublayer is realized, convenient for rapidly and accurately realizing data between the two
Confirmation.
The identification information of the SDAP SDU indexes corresponding SDAP SDU for SDAP sublayer, can be, but not limited to for
The subscript of the storage address of the SDAP SDU or the storage array of SDAP SDU index or SDAP
The sequence number of the SDAP SDU of layer definition.
Certainly, the data, which are sent, can also carry what the SDAP sublayer needed to send to the PDCP sublayer in message
The information such as the identity information of the radio bearer (DRB) of data packet (SDAP PDU) and terminal and terminal and length, so that needing
The SDAP PDU sent to the PDCP sublayer can be properly routed to the PDCP functional entity of radio bearer, realize that data pass
It is defeated.
Step 102, PDCP sublayer save the identification information of SDAP SDU.
The PDCP sublayer sends message according to the data received, can be after receiving SDAP PDU, and saving should
The identification information of the corresponding SDAP SDU of SDAP PDU.
Subsequent PDCP sublayer can send the identification information of the SDAP SDU saved to SDAP sublayer when necessary, notify
SDAP sublayer indexes corresponding SDAP SDU according to the identification information of SDAP SDU, allow SDAP sublayer quick and precisely
Ground identifies the corresponding SDAP SDU of SDAP PDU sent to PDCP sublayer, to realize between SDAP sublayer and PDCP sublayer
The mutual confirmation of data.
Step 103, PDCP sublayer send data-acknowledge message.
In this step, the PDCP sublayer if necessary, can notify SDAP sublayer to discharge data pack buffer, to mitigate
SDAP sublayer caches pressure.
Specifically, the PDCP sublayer can send data-acknowledge message to the SDAP sublayer, the data validation disappears
The each identification information for sending the corresponding SDAP SDU of successful data packet PDCP PDU of the PDCP sublayer, notice are carried in breath
The identification information that the SDAP sublayer discharges the SDAP SDU corresponding SDAP SDU and corresponding SDAP PDU.
Preferably, the PDCP sublayer sends data-acknowledge message to the SDAP sublayer and can be by PDCP sublayer low layer
Or the confirmation packet triggering of peer layer.Specifically, the PDCP sublayer can receive what low layer or opposite end PDCP sublayer were sent
After PDCP PDU receives success confirmation message, Xiang Suoshu SDAP sublayer sends data-acknowledge message.In the concrete realization, described
PDCP sublayer receives after the PDCP PDU that low layer or opposite end PDCP sublayer are sent receives success confirmation message, according to the reception at
Each PDCP PDU of function confirmation message instruction, finds the identification information of the corresponding SDAP SDU of the PDCP PDU of storage,
And the identification information of the SDAP SDU found can be carried and be sent to the SDAP sublayer in data-acknowledge message, notify institute
State SDAP sublayer release caching.
The PDCP sublayer is also possible to periodically send data-acknowledge message to the SDAP sublayer according to the setting period,
Can also be the maximum amount of data that can be cached according to the SDAP sublayer or end-to-end lower layer link be sent to feedback when
Prolong, Xiang Suoshu SDAP sublayer sends data-acknowledge message, notifies the SDAP sublayer release caching.
Certainly, in the data-acknowledge message can with the identity information of carried terminal and the radio bearer (DRB) of terminal,
Data-acknowledge message is enabled to be properly routed to the SDAP functional entity of radio bearer.
Step 104, SDAP sublayer release caching.
The SDAP sublayer can discharge after receiving data-acknowledge message according to the identification information of SDAP SDU
The corresponding SDAP SDU of the identification information of SDAP SDU realizes data packet release.
Since it is determined that the corresponding SDAP SDU of identification information of SDAP SDU, can also determine that SDAP SDU is corresponding
SDAP PDU, and then relevant SDAP PDU is discharged, further release caching, reduces caching pressure.SDAP SDU and SDAP
The mapping relations of PDU, which can be, to be realized by SDAP functional entity.
Step 105, PDCP sublayer send data reconstruction and found request message.
It is related can to notify that SDAP sublayer carries out when re-establishing for the PDCP sublayer of transmitting terminal as data
The release and reservation of SDAP SDU, to reduce SDAP sublayer caching pressure, and after realizing that PDCP sublayer re-establishes, SDAP
Layer can correctly retransmit data packet.
In this step, transmitting terminal of the PDCP sublayer as data can be to the SDAP when re-establishing
Sublayer sends data reconstruction and founds request message, and the data reconstruction, which is stood, carries each successful PDCP PDU of transmission in request message
The identification information of corresponding SDAP SDU, the corresponding SDAP of identification information for notifying the SDAP sublayer to discharge the SDAP SDU
SDU and corresponding SDAP PDU, and,
Carry each corresponding transmission order information of PDCP PDU SDAP corresponding with the PDCP PDU for sending failure
The identification information of SDU notifies the SDAP sublayer after the PDCP sublayer re-establishes successfully, according to the transmission order information weight
Pass the corresponding SDAP PDU of identification information of the SDAP SDU；
It is described to send order information as the sequence number (SN) of PDCP PDU and count (COUNT) value or COUNT value, or
Person No. SN and Hyper Frame Number (HFN).Specifically, being provided in 36.323PDCP agreement, COUNT=HFN*2n+SN。
It certainly, can be with the body of carried terminal and the radio bearer (DRB) of terminal in the vertical request message of the data reconstruction
Part information, enables data-acknowledge message to be properly routed to the SDAP functional entity of radio bearer.
It should be noted that this step is not limited to execute after step 104, it is also possible to execute after step 102.
Step 106, the release of SDAP sublayer and re-transmission data packet.
In this step, SDAP sublayer can stand each transmission carried in request message according to the data reconstruction received
The successfully identification information of the corresponding SDAP SDU of PDCP PDU, discharges the corresponding SDAP of identification information of the SDAP SDU
SDU。
Since it is determined that the corresponding SDAP SDU of identification information of SDAP SDU, can also determine that SDAP SDU is corresponding
SDAP PDU, and then relevant SDAP PDU is discharged, further release caching, reduces caching pressure.SDAP SDU and SDAP
The mapping relations of PDU, which can be, to be realized by SDAP functional entity.
In addition, SDAP sublayer founds request message according to the data reconstruction received, it can be directed to the data packet to be retained, protected
Deposit each corresponding transmission order information of PDCP PDU for sending failure.
Further, after PDCP sublayer re-establishes successfully, SDAP sublayer can according to the transmission order information of preservation, to
PDCP sublayer retransmits SDAP PDU, realizes data packet retransmission.Specifically, SDAP sublayer is pressed after PDCP sublayer re-establishes successfully
SDAP PDU is retransmitted according to the transmission order information received, the SDAP PDU of re-transmission is by each PDCP PDU for sending failure
What the identification information of corresponding SDAP SDU determined.
Step 107, PDCP sublayer enter retransmission process process.
In this step, PDCP sublayer receives the SDAP PDU that the SDAP sublayer retransmits after re-establishing successfully.It is described
PDCP sublayer executes retransmission process process according to the SDAP PDU of the re-transmission received, and updates the parameter for sending window.
It should be noted that in embodiments of the present invention, needing newly to issue additional at receiving end of the PDCP sublayer as data
Send constraint.That is, the PDCP sublayer of the receiving end as data is during re-establishing, therefore, to assure that corresponding according to PDCP PDU
Order information is received, successively submits corresponding send data packet (the PDCP SDU) of PDCP PDU to the upper layer of the PDCP sublayer.
Based on the same inventive concept, it is additionally provided in the embodiment of the present invention following corresponding with inter-layer data transmission method
Inter-layer data transmitting device, since the principle that the device solves the problems, such as is similar to inter-layer data transmission method of the embodiment of the present invention,
Therefore the implementation of the device may refer to the implementation of method, and overlaps will not be repeated.
Embodiment two,
As shown in figure 3, being inter-layer data transmitting device structural schematic diagram provided by Embodiment 2 of the present invention, the device application
In Packet Data Convergence Protocol PDCP sublayer, comprising:
The data that receiving module 11 is used to receive the transmission of service data adapting protocol SDAP sublayer send message, the data
It sends in message and carries identification information of the SDAP sublayer from the received data packet SDAP SDU in its upper layer, the SDAP SDU couple
The identification information of the data packet SDAP PDU, the SDAP SDU that answer the SDAP sublayer to send to the PDCP sublayer are can
Identify the information of the SDAP SDU.
Described device further include:
The data that preserving module 12 is used to be received according to the receiving module 11 send message, receive SDAP
After PDU, the identification information of the corresponding SDAP SDU of the SDAP PDU is saved.
Described device further include:
Sending module 13 is used to send data-acknowledge message to the SDAP sublayer, carries institute in the data-acknowledge message
The each identification information for sending the corresponding SDAP SDU of successful data packet PDCP PDU of PDCP sublayer is stated, notifies SDAP
Layer discharges the identification information corresponding SDAP SDU and corresponding SDAP PDU of the SDAP SDU.
The sending module 13 is specifically used for receiving what low layer or opposite end PDCP sublayer were sent in the PDCP sublayer
After PDCP PDU receives success confirmation message, Xiang Suoshu SDAP sublayer sends data-acknowledge message, alternatively, according to the setting period,
Timing sends data-acknowledge message to the SDAP sublayer, alternatively, according to the maximum amount of data that the SDAP sublayer can cache,
Data-acknowledge message is sent to the SDAP sublayer, alternatively, being sent to the time delay of feedback, Xiang Suoshu according to end-to-end lower layer link
SDAP sublayer sends data-acknowledge message.
When the sending module 13 is also used to the PDCP sublayer and re-establishes as transmitting terminal, Xiang Suoshu SDAP sublayer
It sends data reconstruction and founds request message, it is corresponding that each successful PDCP PDU of transmission is carried in the vertical request message of the data reconstruction
SDAP SDU identification information, the corresponding SDAP SDU of the identification information for notifying the SDAP sublayer to discharge the SDAP SDU and
Corresponding SDAP PDU, and,
Carry each corresponding transmission order information of PDCP PDU SDAP corresponding with the PDCP PDU for sending failure
The identification information of SDU notifies the SDAP sublayer after the PDCP sublayer re-establishes successfully, according to the transmission order information weight
Pass the corresponding SDAP PDU of identification information of the SDAP SDU；
Wherein, described to send order information as the sequence number SN of PDCP PDU and count COUNT value or COUNT value, or
Person SN and Hyper Frame Number HFN.
Described device further includes retransmission process module 14:
The receiving module 11 is also used to after the PDCP sublayer re-establishes successfully, receives the SDAP sublayer according to described
Send the SDAP PDU that order information retransmits；
The SDAP PDU for the re-transmission that the retransmission process module 14 is used to be received according to the receiving module 11, executes weight
Pass process flow.
When the sending module 13 is also used to the PDCP sublayer as receiving end, during re-establishing, according to PDCP
The corresponding reception order information of PDU successively submits the corresponding transmission data packet PDCP SDU of PDCP PDU to the PDCP sublayer
Upper layer.
Embodiment three,
As shown in figure 4, for the inter-layer data transmitting device structural schematic diagram that the embodiment of the present invention three provides, the device application
In service data adapting protocol SDAP sublayer, comprising:
Sending module 21, which is used to send data to Packet Data Convergence Protocol PDCP sublayer, sends message, and the data are sent
Identification information of the SDAP sublayer from the received data packet SDAP SDU in its upper layer is carried in message, which corresponds to institute
The identification information for stating data packet SDAP PDU, the SDAP SDU that SDAP sublayer is sent to the PDCP sublayer is that can be identified for that
The information of the SDAP SDU.
Described device further include:
Receiving module 22 is used to receive the data-acknowledge message that the PDCP sublayer is sent, and takes in the data-acknowledge message
With each identification information for sending the corresponding SDAP SDU of successful data packet PDCP PDU of the PDCP sublayer.
Described device further include:
The data-acknowledge message that release cache module 23 is used to be received according to receiving module 22, discharges data-acknowledge message
The identification information of the SDAP SDU of middle carrying corresponding SDAP SDU and corresponding SDAP PDU.
The receiving module 22 is also used to receive the data reconstruction that the PDCP sublayer is sent and founds request message, the data
It re-establishes and carries each identification letter for sending the corresponding SDAP SDU of successful PDCP PDU of the PDCP sublayer in request message
Breath, and, each corresponding transmission order information of PDCP PDU for sending failure of the PDCP sublayer is corresponding with the PDCP PDU
SDAP SDU identification information；
Wherein, described to send order information as the sequence number SN of PDCP PDU and count COUNT value or COUNT value, or
Person SN and Hyper Frame Number HFN.
The sending module 21 is also used to after the PDCP sublayer re-establishes successfully, according to the transmission order information weight
SDAP PDU is passed, the SDAP PDU of re-transmission is the identification information by each corresponding SDAP SDU of PDCP PDU for sending failure
Determining, indicate that the PDCP sublayer according to the SDAP PDU of the re-transmission received, executes retransmission process process.
The data reconstruction that the release cache module 23 is also used to be received according to receiving module 22, which is stood in request message, to be taken
The identification information of the corresponding SDAP SDU of the successful PDCP PDU of each transmission of band, discharges the identification information pair of the SDAP SDU
The SDAP SDU and corresponding SDAP PDU answered.
The embodiment of the present invention four also provides a kind of nonvolatile computer storage media, the computer storage medium storage
There is executable program, which executes the step for the inter-layer data transmission method for realizing that PDCP sublayer side executes
Suddenly.
The embodiment of the present invention five also provides a kind of nonvolatile computer storage media, the computer storage medium storage
There is executable program, which executes the step for the inter-layer data transmission method for realizing that SDAP sublayer side executes
Suddenly.
The embodiment of the present invention six also provides a kind of inter-layer data transmission device, is applied to Packet Data Convergence Protocol PDCP
Layer, as shown in figure 5, including memory 31, computer program, transceiver 33 and the bus of processor 32 and storage on a memory
Interface, wherein the data that the transceiver 33 is used to receive the transmission of service data adapting protocol SDAP sublayer send message, described
Data send in message and carry identification information of the SDAP sublayer from the received data packet SDAP SDU in its upper layer, the SDAP
SDU corresponds to the data packet SDAP PDU that the SDAP sublayer is sent to the PDCP sublayer, the identification information of the SDAP SDU
For the information that can be identified for that the SDAP SDU.The processor realizes the interlayer number that PDCP sublayer side executes when executing described program
The step of according to transmission method.The equipment can be understood as including device provided by Embodiment 2 of the present invention, and the processor executes
Function possessed by device provided by Embodiment 2 of the present invention is realized when described program.
The embodiment of the present invention seven also provides a kind of inter-layer data transmission device, is applied to service data adapting protocol SDAP
Layer, as shown in figure 5, including memory, computer program, transceiver and the bus interface of processor and storage on a memory,
Wherein, the transceiver is used to send data to Packet Data Convergence Protocol PDCP sublayer and sends message, and the data transmission disappears
Identification information of the SDAP sublayer from the received data packet SDAP SDU in its upper layer is carried in breath, described in the SDAP SDU is corresponding
The identification information of data packet SDAP PDU, the SDAP SDU that SDAP sublayer is sent to the PDCP sublayer are that can be identified for that this
The information of SDAP SDU.The processor realizes the inter-layer data transmission method that SDAP sublayer side executes when executing described program
Step.The equipment can be understood as including device that the embodiment of the present invention three provides, and the processor executes real when described program
Function possessed by the device that the existing embodiment of the present invention three provides.
The equipment that the embodiment of the present invention six and embodiment seven provide can also be integrated in an inter-layer data transmission device,
The device structure can also with as shown in figure 5, the embodiment of the present invention six and embodiment seven provide respectively transceiver, bus interface,
Memory, processor share, when shared processor executes the program stored on shared memory, realize PDCP sublayer side and
The step of inter-layer data transmission method that SDAP sublayer side executes, and realize the dress that the embodiment of the present invention two and embodiment three provide
Set possessed function.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The present invention be referring to according to the method for the embodiment of the present invention, the process of device (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (19)
1. a kind of inter-layer data transmission method, which is characterized in that the described method includes:
Packet Data Convergence Protocol PDCP sublayer receives the data that service data adapting protocol SDAP sublayer is sent and sends message, institute
It states in data transmission message and carries identification information of the SDAP sublayer from the received data packet SDAP SDU in its upper layer, the SDAP
SDU corresponds to the data packet SDAP PDU that the SDAP sublayer is sent to the PDCP sublayer, the identification information of the SDAP SDU
For the information that can be identified for that the SDAP SDU.
2. the method as described in claim 1, which is characterized in that the method also includes:
The PDCP sublayer sends message according to the data, and after receiving SDAP PDU, it is corresponding to save the SDAP PDU
The identification information of SDAP SDU.
3. method according to claim 2, which is characterized in that
The identification information of the SDAP SDU is the storage address of the SDAP SDU or the storage array of the SDAP SDU
Subscript index or the sequence number of the SDAP SDU that defines of the SDAP sublayer.
4. method as claimed in claim 3, which is characterized in that the method also includes:
The PDCP sublayer sends data-acknowledge message to the SDAP sublayer, carries the PDCP in the data-acknowledge message
The each identification information for sending the corresponding SDAP SDU of successful data packet PDCP PDU of sublayer, notifies the SDAP sublayer to discharge
The identification information of the SDAP SDU corresponding SDAP SDU and corresponding SDAP PDU.
5. method as claimed in claim 4, which is characterized in that the PDCP sublayer sends data validation to the SDAP sublayer
Message specifically includes:
The PDCP sublayer after receiving the PDCP PDU that low layer or opposite end PDCP sublayer are sent and receiving success confirmation message, to
The SDAP sublayer sends data-acknowledge message, alternatively,
The PDCP sublayer periodically sends data-acknowledge message to the SDAP sublayer according to the setting period, alternatively,
The maximum amount of data that the PDCP sublayer can be cached according to the SDAP sublayer, it is true that Xiang Suoshu SDAP sublayer sends data
Recognize message, alternatively,
The PDCP sublayer is sent to the time delay of feedback according to end-to-end lower layer link, and Xiang Suoshu SDAP sublayer sends data validation
Message.
6. the method as described in Claims 1 to 5 is any, which is characterized in that the method also includes:
Transmitting terminal of the PDCP sublayer as data, when re-establishing, it is vertical that Xiang Suoshu SDAP sublayer sends data reconstruction
Request message, the data reconstruction, which is stood, carries each knowledge for sending the corresponding SDAP SDU of successful PDCP PDU in request message
Other information, the identification information for notifying the SDAP sublayer to discharge the SDAP SDU corresponding SDAP SDU and corresponding SDAP
PDU, and,
Carry the corresponding transmission order information of each PDCP PDU for sending failure SDAP SDU's corresponding with the PDCP PDU
Identification information notifies the SDAP sublayer after the PDCP sublayer re-establishes successfully, and retransmitting according to the transmission order information should
The corresponding SDAP PDU of the identification information of SDAP SDU；
Wherein, described to send the sequence number SN and count COUNT value perhaps COUNT value or SN that order information is PDCP PDU
With Hyper Frame Number HFN.
7. method as claimed in claim 6, which is characterized in that the method also includes:
After the PDCP sublayer re-establishes successfully, the SDAP that the SDAP sublayer is retransmitted according to the transmission order information is received
PDU；
The PDCP sublayer executes retransmission process process according to the SDAP PDU of the re-transmission received.
8. the method for claim 7, which is characterized in that when receiving end of the PDCP sublayer as data, rebuilding
During vertical, according to the corresponding reception order information of PDCP PDU, the corresponding transmission data packet PDCP of PDCP PDU is successively submitted
SDU gives the upper layer of the PDCP sublayer.
9. a kind of inter-layer data transmission method, which is characterized in that the described method includes:
Service data adapting protocol SDAP sublayer sends data to Packet Data Convergence Protocol PDCP sublayer and sends message, the number
Identification information of the SDAP sublayer from the received data packet SDAP SDU in its upper layer, the SDAP SDU are carried according to sending in message
The identification information of data packet SDAP PDU, the SDAP SDU that the corresponding SDAP sublayer is sent to the PDCP sublayer are energy
Enough identify the information of the SDAP SDU.
10. method as claimed in claim 9, which is characterized in that
The identification information of the SDAP SDU is the storage address of the SDAP SDU or the storage array of the SDAP SDU
Subscript index or the sequence number of the SDAP SDU that defines of the SDAP sublayer.
11. method as claimed in claim 10, which is characterized in that the method also includes:
The SDAP sublayer receives the data-acknowledge message that the PDCP sublayer is sent, in the data-acknowledge message described in carrying
The each identification information for sending the corresponding SDAP SDU of successful data packet PDCP PDU of PDCP sublayer.
12. method as claimed in claim 11, which is characterized in that the method also includes:
The SDAP sublayer discharges the knowledge of the SDAP SDU carried in data-acknowledge message according to the data-acknowledge message received
The corresponding SDAP SDU and corresponding SDAP PDU of other information.
13. the method as described in claim 9~12 is any, which is characterized in that the method also includes:
The SDAP sublayer receives the data reconstruction that the PDCP sublayer is sent and founds request message, and the vertical request of the data reconstruction disappears
The each identification information for sending the corresponding SDAP SDU of successful PDCP PDU of the PDCP sublayer is carried in breath, and, it is described
The each PDCP PDU for sending failure of PDCP sublayer is corresponding to send order information SDAP SDU's corresponding with the PDCP PDU
Identification information；
Wherein, described to send the sequence number SN and count COUNT value perhaps COUNT value or SN that order information is PDCP PDU
With Hyper Frame Number HFN.
14. method as claimed in claim 13, which is characterized in that the method also includes:
The SDAP sublayer retransmits SDAP PDU after the PDCP sublayer re-establishes successfully, according to the transmission order information,
The SDAP PDU of re-transmission is determined by the identification information of each corresponding SDAP SDU of PDCP PDU for sending failure, instruction
The PDCP sublayer executes retransmission process process according to the SDAP PDU of the re-transmission received.
15. method as claimed in claim 13, which is characterized in that the method also includes:
The SDAP sublayer founds the successful PDCP PDU of each transmission carried in request message according to the data reconstruction received
The identification information of corresponding SDAP SDU discharges the identification information corresponding SDAP SDU and corresponding SDAP of the SDAP SDU
PDU。
16. a kind of nonvolatile computer storage media, which is characterized in that the computer storage medium is stored with executable journey
Sequence, the executable code processor execute the step of realizing claim 1~8 any the method.
17. a kind of nonvolatile computer storage media, which is characterized in that the computer storage medium is stored with executable journey
Sequence, the executable code processor execute the step of realizing claim 9~15 any the method.
18. a kind of inter-layer data transmission device is applied to Packet Data Convergence Protocol PDCP sublayer, which is characterized in that including receiving
Device, bus interface, memory, the computer program of processor and storage on a memory are sent out, the processor execution is stored in
Described program on the memory, wherein the transceiver, for receiving the transmission of service data adapting protocol SDAP sublayer
Data send message, and the data send in message and carry the SDAP sublayer from the received data packet SDAP SDU's in its upper layer
Identification information, the data packet SDAP PDU which corresponds to that the SDAP sublayer sends to the PDCP sublayer are described
The identification information of SDAP SDU is that can be identified for that the information of the SDAP SDU.
19. a kind of inter-layer data transmission device is applied to service data adapting protocol SDAP sublayer, which is characterized in that including receiving
Device, bus interface, memory, the computer program of processor and storage on a memory are sent out, the processor execution is stored in
Described program on the memory, wherein the transceiver, for sending data to Packet Data Convergence Protocol PDCP sublayer
Message is sent, the data send in message and carry the identification of the SDAP sublayer from the received data packet SDAP SDU in its upper layer
Information, the SDAP SDU correspond to data packet the SDAP PDU, the SDAP that the SDAP sublayer is sent to the PDCP sublayer
The identification information of SDU is that can be identified for that the information of the SDAP SDU.
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