CN107404769A - A kind of data transmission method and device - Google Patents
A kind of data transmission method and device Download PDFInfo
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- CN107404769A CN107404769A CN201610342237.7A CN201610342237A CN107404769A CN 107404769 A CN107404769 A CN 107404769A CN 201610342237 A CN201610342237 A CN 201610342237A CN 107404769 A CN107404769 A CN 107404769A
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- pdcp
- sequence mark
- pdcp pdu
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/19—Connection re-establishment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
- H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
- H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/11—Allocation or use of connection identifiers
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- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of data transmission method and device, to improve PDCP PDU sequence efficiencies.The data transmission method, including：Sent respectively to multiple wireless spread-spectrum technology RLC entities and include the first sequence mark in PDCP protocol Data Unit PDCP PDU, the PDCP PDU, the first sequence mark is used for the order for being identified as the PDCP PDU of different RLC distributions.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly to a kind of data transmission method and device.
Background technology
LTE (Long Term Evolution, Long Time Evolution) Radio interface protocols stack includes user-plane protocol stack and control
Plane protocol stack processed.Wherein, user-plane protocol stack includes：Physical layer (PHY), MAC layer (Media Access
Control, MAC), wireless spread-spectrum technology (Radio Link Control, RLC) layer and media intervention control (MAC) layer, packet
Data convergence protocol (Packet Data Convergence Protocol, PDCP) layer.Control plane protocol stack is in above-mentioned frame
Also include wireless heterogeneous networks (Radio Resource Control, RRC) and Non-Access Stratum on the basis of structure.In transmitting terminal, from
High level receives Service Data Unit (Service Data Unit, SDU) and provides business for the layer, and to low layer output protocol number
According to unit (Protocol Data Unit, PDU).For example, rlc layer receives the packet from PDCP, these packets are for PDCP
It is PDCP PDU for layer, but is RLC SDU for rlc layer.PDCP entities for sending PDCP PDU are referred to as PDCP
Tx, the RLC entities for sending RLC PDU are referred to as RLC Tx, and in receiving terminal, the process is opposite, and every layer sends to upper strata
SDU, upper strata receive as PDU.PDCP entities for receiving PDCP PDU are referred to as PDCP Rx, for receiving RLC PDU's
RLC entities are referred to as RLC Rx.PDCP PDU are identified by PDCP sequence numbers (Sequence Number, SN), and PDCP sequence numbers can follow
Ring utilizes, and when PDCP sequence numbers reach maximum, new PDCP PDU are numbered from minimum value again, but corresponding Hyper Frame Number
(Hyper Frame Number, HFN) increases by one PDCP of COUNT unique marks of 1, PDCP sequence numbers and Hyper Frame Number composition
SDU。
In conventional communication system, each radio bearer (bearer) has a PDCP entity and a RLC entity, i.e., and one
Individual PDCP carryings are corresponding with a RLC carrying.But with mobile Internet and the high speed development of Internet of Things, 5G (move by the 5th generation
Dynamic communication) network needs offer more high flow capacity, service more multiple terminals is simultaneously supported more multi-link.In order to meet enhanced mobile broadband
The demand for the new business such as class business, low time delay be highly reliable, it is proposed that dual link, C (chain of command)/U (user plane) separation, C-RAN
(Centralized Cooperative Cloud RAN, centralization/collaborative/cloud computing wireless access network) distributed network
A series of schemes such as framework.
Seen from the above description, the 5G network architectures propose the access network of distributed structure/architecture, and air protocol stack is transported respectively
Row is in different distributed entities.With RCC (Radio Cloud Center, wireless cloud center)-RRS (Radio Remote
System, far end radio frequency system) exemplified by distributed structure/architecture, non-ideal transmission is transmitted as between RCC-RRS, so needing to consider
Segmentation reconstruct under non-ideal transmission to protocol stack function.
Prior art is the progress agreement segmentation between PDCP/RLC, increases PDCP PDU weight in PDCP protocol functions
Ranking function, RLC function keep constant.But there is problems with this solution：Increase a whole set of in PDCP agreements
The mechanism of reordering sequentially is sent and received, when PDCP is ranked up by No. SN of PDCP PDU, multiple RLC is received and send
PDCP PDU be only possible to sort, cause complexity big, extend during sequence；And re-establishing (reestablishment)
Under application scenarios, because each carrying air interface transmission time delay between RLC and PDCP is different, corresponding to the PDU that PDCP is received
SN spans are larger, and the window that reordered to PDCP is safeguarded and the timer design that reorders brings challenge, reduces PDCP PDU
Sequence efficiency.
The content of the invention
The embodiment of the present invention provides a kind of data transmission method and device, to improve PDCP PDU sequence efficiencies.
The first data transmission method provided in an embodiment of the present invention, including：
Respectively PDCP-protocol Data Unit PDCP is sent to multiple wireless spread-spectrum technology RLC entities
Include the first sequence mark in PDU, the PDCP PDU, the first sequence mark is used to be identified as different RLC distributions
PDCP PDU order.
Wherein, the first sequence mark included in the PDCP PDU that the same time is the distribution that same RLC entities are sent
It is identical.
Also include the second sequence mark in the PDCP PDU, the second sequence mark is used to identify to same RLC
The PDCP PDU of transmission order.
The PDCP PDU are obtained in such a way：
Receive the high-rise PDCP Service Data Units SDU sent；
The PDCP PDU are obtained after handling the PDCP SDU.
The first sequence mark recycles according to sequence mark maximum, and the sequence mark maximum is according to institute
State what the data bit that the first sequence mark takes in the PDCP PDU determined.
The first data transmission device provided in an embodiment of the present invention, including：
Dispatching Unit, for sending PDCP-agreement number to multiple wireless spread-spectrum technology RLC entities respectively
According to unit PDCP PDU, the first sequence mark is included in the PDCP PDU, the first sequence mark is used to be identified as not
The PDCP PDU of same RLC distributions order.
The the first sequence mark included in the PDCP PDU that the same time is the distribution that same RLC entities are sent is identical.
Also include the second sequence mark in the PDCP PDU, the second sequence mark is used to identify to same RLC
The PDCP PDU of transmission order.
Alternatively, data transmission device provided in an embodiment of the present invention, in addition to：
Receiving unit, for receiving the PDCP Service Data Units SDU of high-rise transmission；
Processing unit, for obtaining the PDCP PDU after handling the PDCP SDU.
The first sequence mark recycles according to sequence mark maximum, and the sequence mark maximum is according to institute
State what the data bit that the first sequence mark takes in the PDCP PDU determined.
Second of data transmission method provided in an embodiment of the present invention, including：
PDCP-protocol Data Unit that multiple wireless spread-spectrum technology RLC entities are sent is received respectively
Include the first sequence mark in PDCP PDU, the PDCP PDU, the first sequence mark is different for identifying
The order for the PDCP PDU that RLC is sent；
The PDCP PDU received from different RLC are ranked up according to the described first sequence mark.
Also include the second sequence mark in the PDCP PDU, the second sequence mark is used to identify same RLC hairs
The PDCP PDU sent order.
The first sequence mark recycles according to sequence mark maximum, and the sequence mark maximum is according to institute
State what the data bit that the first sequence mark takes in the PDCP PDU determined.
Alternatively, data transmission device provided in an embodiment of the present invention, in addition to：
Receiving unit, comprising in the PDCP PDU, the PDCP PDU that are sent for receiving multiple RLC entities respectively
The first sequence mark is stated, the first sequence mark is used for the order for identifying the PDCP PDU that different RLC is sent；
Reorder unit, for being arranged according to the described first sequence mark the PDCP PDU received from different RLC
Sequence.
Also include the second sequence mark in the PDCP PDU, the second sequence mark is used to identify same RLC hairs
The PDCP PDU sent order.
The first sequence mark recycles according to sequence mark maximum, and the sequence mark maximum is according to institute
State what the data bit that the first sequence mark takes in the PDCP PDU determined.
Data transmission method and device provided in an embodiment of the present invention, added in PDCP PDU for being identified as difference
RLC distributions PDCP PDU distribution orders the first sequence mark, ensure that different RLC entities need what is sent with this
PDCP PDU order；And for the PDCP PDU that different RLC is sent, the transmission side data provided according to embodiments of the present invention
Method so that PDCP entities can be respectively processed for every RLC PDCP PDU sent respectively according to the first sequence mark,
Finally each RLC PDCP PDU sent are ranked up according to the first sequence mark, reset without redesigning PDCP
Sequence window and the timer that reorders, PDCP PDU sequence efficiency is improved, reduces data transmission delay.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by the explanations write
Specifically noted structure is realized and obtained in book, claims and accompanying drawing.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the present invention, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the application scenarios schematic diagram that data transmission method is implemented in the embodiment of the present invention；
Fig. 2 is in the embodiment of the present invention, and transmitting terminal implements the implementation process diagram of data transmission method；
In the embodiment of the present invention of Fig. 3 positions, receiving terminal implements the implementation stream of data transmission method provided in an embodiment of the present invention
Journey schematic diagram；
Fig. 4 is the structural representation of PDCP protocol stacks in the embodiment of the present invention；
Fig. 5 is the structural representation of the first data transmission device in the embodiment of the present invention；
Fig. 6 is the structural representation of second of data transmission device in the embodiment of the present invention.
Embodiment
In order to improve PDCP PDU sequence efficiency, the embodiments of the invention provide a kind of data transmission method and device.
As shown in figure 1, it is the application scenarios schematic diagram that data transmission method provided in an embodiment of the present invention is implemented, one
It is corresponding with k (k is the positive integer more than or equal to 1) individual RLC carryings that PDCP carries (RB).PDCP PDU in any PDCP carryings
Need to be distributed to corresponding k RLC carryings, carried out data transmission by k RLC entity, and a PDCP carrying needs to receive k
The PDCP PDU that individual RLC carryings are submitted, PDCP carryings need to handle the packet received from different RLC carryings
After be submitted to upper strata.In figure shown in Fig. 1, n (n is the positive integer more than or equal to 1) individual PDCP is included.
The problem of existing for the corresponding multiple RLC of the PDCP carryings application scenarios carried, the embodiment of the present invention provides
A kind of data transmission method.The preferred embodiments of the present invention are illustrated below in conjunction with Figure of description, it will be appreciated that this
The preferred embodiment of place description is merely to illustrate and explain the present invention, and is not intended to limit the present invention, and is not being conflicted
In the case of, the feature in embodiment and embodiment in the present invention can be mutually combined.
As shown in Fig. 2 it is the implementation process diagram of the first data transmission method provided in an embodiment of the present invention, can
To comprise the following steps：
S21, receive the high-rise PDCP Service Data Units SDU sent.
When it is implemented, in transmitting terminal, PDCP receives high level, for example, the PDCP business datums that IP layers or rrc layer are sent
Cell S DU.
S22, obtain PDCP PDU after handling the PDCP SDU received.
PDCP SDU processing of the PDCP to receiving, for example, PDCP enters wardrobe compression to the PDCP SDU received
With the processing such as encryption, and PDCP headers etc. are added for PDCP SDU.The scheme provided according to embodiments of the present invention, PDCP are
It can include the first sequence mark (exemplified by be easy to describe, hereinafter referred to as RSN) in the PDCP headers of PDCP SDU additions,
The first sequence mark is used for the order for being identified as the PDCP PDU of different RLC distributions, i.e., provides according to embodiments of the present invention
Data transmission method, the same time is sent to the one group of PDCP PDU and unique RSN of same RLC carrying
(Reordering SN) is corresponding.
When it is implemented, PDCP of the embodiment of the present invention is that can also include second in the PDCP headers of PDCP SDU additions
Sequence mark, for identifying the order to the same RLC PDCP PDU sent, the second sequence mark is held with PDCP in the prior art
It is identical to carry the effect of PDCP SN when one-to-one corresponding is carried with RLC, for the ease of description, the hereinafter referred to as second sequence is identified as SN.
S23, send PDCP PDU to multiple RLC entities respectively.
After the PDCP SDU processing to receiving obtains PDCP PDU, PDCP entities are sent out according to each RLC entities
The data throughout sent is that each RLC entities distribute PDCP PDU.After step S22 processing, PDCP entities are each RLC
Include RSN and SN in the PDCP PDU that entity is sent.
When distributing PDCP PDU to multiple RLC entities, PDCP needs to ensure the PDCP PDU for the distribution of each RLC entities
SN is continuous, and needs to ensure that corresponding PDCP PDU SN are also continuous when RSN is sequentially sent, i.e. another corresponding to adjacent R SN
PDCP PDU SN between individual RLC also should be continuous, for example, distributing the PDCP that PDCP PDU SN are 0~400 for RSN=0 RLC
PDU, then should be since 401 for RSN=1 RLC distribution PDCP PDU SN.
Wherein, SN distribution principle is same as the prior art, i.e., is recycled according to SN maximums.For example, the model with SN
Enclose for exemplified by 0~4095, after SN reaches 4095, SN corresponding to next PDCP PDU from 0 restart numbering but corresponding to
Hyper Frame Number (HFN) plus 1.
The RSN increased newly in the embodiment of the present invention is similarly to be recycled according to sequence mark maximum, wherein, sequence mark
Maximum is that the data bit taken in PDCP PDU according to RSN determines, using the data bit that RSN takes in PDCP PDU as
Exemplified by m, then sequence mark maximum is 2m-1。
When it is implemented, the nonideal biography of NGFI (forward pass network interface of future generation) can be passed through between PDCP and RLC
Defeated network interacts, and can also be interacted by preferable transmission network, and the embodiment of the present invention is to this without limiting.
As shown in figure 3, it is the implementation process diagram of second of data transmission method provided in an embodiment of the present invention, can
To comprise the following steps：
S31, PDCP receive the PDCP PDU that multiple RLC entities are sent respectively.
In this step, each RLC is receiving the data RLC SDU of bottom (such as can be MAC layer) transmission, is processed to
The transmission order for obtaining sending after RLC PDU these data afterwards according to bottom is sequentially submitted to PDCP processing, PDCP conducts
PDCP PDU are received, and the first sequence mark (RSN) and the second sequence mark (SN) are included in the PDCP PDU received.
Wherein, the order for the PDCP PDU that the first sequence mark is sent for identifying different RLC, the second sequence mark are used to identify together
The order for one group of PDCP PDU that one RLC is sent.Similar with the first data transmission method, the first sequence mark in this example is same
Sample is to be recycled according to sequence mark maximum, and the sequence mark maximum is described according to the described first sequence mark
What the data bit taken in PDCP PDU determined, so that the data bit that RSN takes in PDCP PDU is m as an example, then sequence identifies
Maximum is 2m-1。
S32, PDCP are ranked up according to the first sequence mark to the PDCP PDU received from different RLC.
In this step, because RLC is sequentially submitted to after the packet of bottom transmission is received according to the order of transmission
PDCP, i.e., RLC internal datas bag corresponding to every RSN are orderly, and PDCP is only needed between RLC corresponding to different RSN
Packet is sequentially submitted after being ranked up to high level, to ensure PDCP SN sequentially processing.
In order to improve the efficiency of PDCP sequence processing, in the embodiment of the present invention, PDCP weights have been increased newly in PDCP protocol stacks
Ranking function, as shown in figure 4, newly-increased PDCP reordering functions be located at PDCP existing capabilitys lower end, PDCP existing capabilitys with
Between RLC existing capabilitys, this design carries such case primarily to shielding the single corresponding multiple RLC of PDCP carryings
Under the influence that is brought to PDCP entities.By increasing PDCP reordering functions, it is ensured that the PDCP PDU after reordering are complete
Handled entirely according to conventional PDCP and the one-to-one situations of RLC.The data provided according to embodiments of the present invention
Transmission method, the PDCP PDU that PDCP is submitted for every RLC respectively according to the RSN increased newly in PDCP PDU are according to existing place
Reason mode is handled, and finally the PDCP PDU that different RLC is submitted are ranked up according to RSN.
In the case of non-re-establish, the PDCP SN that single RLC can ensure are sequential deliveries, and PDCP can lead to
Cross RSN to be ranked up the PDCP PDU RLC, by RSN+SN two-step ways, complete multistage internal sort according to RSN
PDCP PDU are sequentially concatenated, it is possible to which completion is reordered to all PDCP PDU.
And for re-establishing in the case of, RLC can not complete to ensure to be submitted to what PDCP packet was ordered into, especially AM
Under (affirmation mode), it is understood that there may be situation out of order part PDCP SN, the PDCP PDU of different RLC entity transmissions are corresponding
In the case that time delay of eating dishes without rice or wine difference is larger, SN spans are excessive, and current COUNT values, which are safeguarded, only adds the operation that subtracts one, if
PDCP SN spans are larger, and there will be the window that reorders, improper (window that reorders is usually the half of SN maximums, for example, SN
The problem of maximum is 4095, then 2048) window that reorders could be arranged to and COUNT values calculate ambiguity.For example, PDCP distinguishes
The PDCP PDU that the PDCP SN that two RLC are submitted are 496 are received, this is probably because PDCP SN spans are excessive, wherein one
PDCP SN corresponding to individual PDCP PDU are to restart to divide since PDCP SN minimum values after PDCP SN reach its maximum
Identical with caused PDCP SN, according to prior art, PDCP cannot be distinguished by which RLC above-mentioned two PDCP PDU come from, from
And the difficulty for safeguarding COUNT values corresponding to two PDCP PDU is added, and PDCP needs when submitting PDCU PDU to upper strata
To be submitted according to COUNT value ascending orders.
And the embodiment for implementing to provide according to the present invention, RSN is added in PDCP PDU, thus, it is possible to by span
Larger SN is converted into the smaller RSN for being easy to sequence of span, and PDCP is by safeguarding RSN order, the easy dimension of the COUNT values of guarantee
Shield property.
For example, by taking corresponding 4 RLC of a PDCP as an example, every RLC submits PDCP PDU according to certain order to PDCP,
For every RLC, PDCP can be handled according to below scheme：When often receiving the PDCP PDU that the RLC is submitted, PDCP
The COUNT values according to corresponding to RSN therein and SN determine the PDCP PDU are (HSN, SN), and PDCP docks according to RSN order
PDCP PDU between the different RLC received are ranked up.
The data transmission method provided according to embodiments of the present invention, what PDC can be sent to receiving multiple RLC entities
PDCP PDU are ranked up, and to ensure that PDCP PDU are handled according to PDCP SN order, while carry out HFN and COUNT values
Maintenance, in the case where PDCP SN order maintenance functions are constant, PDCP can be ranked up using RSN to PDCP PDU.
Data transmission method provided in an embodiment of the present invention, added in PDCP PDU for being identified as different RLC
First sequence mark of the PDCP PDU distribution orders of distribution, the PDCP sent with this to ensure different RLC entities to need
PDU order；And for the PDCP PDU that different RLC is sent, the data transmission method provided according to embodiments of the present invention, make
Obtaining PDCP entities can be respectively processed for every RLC PDCP PDU sent respectively according to the first sequence mark, finally
Each RLC PDCP PDU sent are ranked up according to the first sequence mark, reordered window without redesigning PDCP
Mouth and the timer that reorders, improve PDCP PDU sequence efficiency.
Based on same inventive concept, corresponding data transmission device is additionally provided in the embodiment of the present invention, because data pass
The principle that defeated device solves problem is similar to above-mentioned data transmission method respectively, therefore the implementation of data transmission device can be joined
The implementation of square method, repeat part and repeat no more.
As shown in figure 5, it is the structural representation of the first data transmission device provided in an embodiment of the present invention, can wrap
Include：
Dispatching Unit 51, include first for being sent respectively to multiple RLC entities in PDCP PDU, the PDCP PDU
Sequence mark, the first sequence mark are used for the order for being identified as the PDCP PDU of different RLC distributions.
Wherein, the first sequence mark recycles according to sequence mark maximum, and the sequence mark maximum is
What the data bit taken according to the described first sequence mark in the PDCP PDU determined.
Wherein, PDCP the same time be same RLC entities send distribution one group of PDCP PDU in include first
Sequence mark is identical.
Preferably, when it is implemented, also including the second sequence mark in the PDCP PDU, second sequence identifies
For identifying the order to the same RLC PDCP PDU sent.
Alternatively, data transmission device provided in an embodiment of the present invention, can also include：
Receiving unit 52, for receiving the PDCP Service Data Units SDU of high-rise transmission；
Processing unit 53, for obtaining the PDCP PDU after handling the PDCP SDU.
For convenience of description, above each several part is divided by function describes respectively for each module (or unit).Certainly, exist
The function of each module (or unit) can be realized in same or multiple softwares or hardware when implementing of the invention.
As shown in fig. 6, it is the structural representation of second of data transmission device provided in an embodiment of the present invention, including：
Receiving unit 61, include in the PDCP PDU, the PDCP PDU that are sent for receiving multiple RLC entities respectively
The first sequence mark.The first sequence mark recycles according to sequence mark maximum, and the sequence mark is maximum
It is worth what is determined for the data bit taken according to the described first sequence mark in the PDCP PDU.
Wherein, the first sequence mark is used for the order for identifying the PDCP PDU that different RLC is sent.
Reorder unit 62, for being carried out according to the described first sequence mark to the PDCP PDU received from different RLC
Sequence.
When it is implemented, also including the second sequence mark in the PDCP PDU, the second sequence mark is used to mark
Know the order for the PDCP PDU that same RLC is sent.
For convenience of description, above each several part is divided by function describes respectively for each module (or unit).Certainly, exist
The function of each module (or unit) can be realized in same or multiple softwares or hardware when implementing of the invention.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the present invention can use the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the present invention can use the computer for wherein including computer usable program code in one or more
The computer program production that usable storage medium is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processors of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which produces, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (16)
- A kind of 1. data transmission method, it is characterised in that including：Respectively PDCP-protocol Data Unit PDCP PDU, institute are sent to multiple wireless spread-spectrum technology RLC entities State and include the first sequence mark in PDCP PDU, the first sequence mark is used for the PDCP for being identified as different RLC distributions PDU order.
- 2. the method as described in claim 1, it is characterised in that in one that the same time is the distribution that same RLC entities are sent The the first sequence mark included in group PDCP PDU is identical.
- 3. method as claimed in claim 1 or 2, it is characterised in that also include the second sequence mark in the PDCP PDU, The second sequence mark is used to identify the order to the same RLC PDCP PDU sent.
- 4. the method as described in claim 1, it is characterised in that the PDCP PDU are obtained in such a way：Receive the high-rise PDCP Service Data Units SDU sent；The PDCP PDU are obtained after handling the PDCP SDU.
- 5. the method as described in claim 1, it is characterised in that the first sequence mark is according to sequence mark maximum circulation Use, the sequence mark maximum is that the data bit taken according to the described first sequence mark in the PDCP PDU determines 's.
- A kind of 6. data transmission method, it is characterised in that including：PDCP-protocol Data Unit PDCP that multiple wireless spread-spectrum technology RLC entities are sent is received respectively Include the first sequence mark in PDU, the PDCP PDU, the first sequence mark is used to identify different RLC hairs The PDCP PDU sent order；The PDCP PDU received from different RLC are ranked up according to the described first sequence mark.
- 7. method as claimed in claim 6, it is characterised in that also include the second sequence mark, institute in the PDCP PDU State the order that the second sequence identifies the PDCP PDU sent for identifying same RLC.
- 8. method as claimed in claim 6, it is characterised in that the first sequence mark is according to sequence mark maximum circulation Use, the sequence mark maximum is that the data bit taken according to the described first sequence mark in the PDCP PDU determines 's.
- A kind of 9. data transmission device, it is characterised in that including：Dispatching Unit, for sending PDCP-protocol data list to multiple wireless spread-spectrum technology RLC entities respectively Include the first sequence mark in first PDCP PDU, the PDCP PDU, the first sequence mark is different for being identified as The PDCP PDU of RLC distributions order.
- 10. device as claimed in claim 9, it is characterised in that in one that the same time is the distribution that same RLC entities are sent The the first sequence mark included in group PDCP PDU is identical.
- 11. the device as described in claim 9 or 10, it is characterised in that also include the second sequence mark in the PDCP PDU Know, the second sequence mark is used to identify the order to the same RLC PDCP PDU sent.
- 12. device as claimed in claim 9, it is characterised in that also include：Receiving unit, for receiving the PDCP Service Data Units SDU of high-rise transmission；Processing unit, for obtaining the PDCP PDU after handling the PDCP SDU.
- 13. device as claimed in claim 9, it is characterised in that the first sequence mark is followed according to sequence mark maximum Ring uses, and the sequence mark maximum is that the data bit taken according to the described first sequence mark in the PDCP PDU is true Fixed.
- A kind of 14. data transmission device, it is characterised in that including：Receiving unit, described the is included in the PDCP PDU, the PDCP PDU that are sent for receiving multiple RLC entities respectively One sequence mark, the first sequence mark are used for the order for identifying the PDCP PDU that different RLC is sent；Reorder unit, for being ranked up according to the described first sequence mark to the PDCP PDU received from different RLC.
- 15. device as claimed in claim 14, it is characterised in that also include the second sequence mark in the PDCP PDU, The second sequence mark is used for the order for identifying the PDCP PDU that same RLC is sent.
- 16. device as claimed in claim 14, it is characterised in that the first sequence mark is followed according to sequence mark maximum Ring uses, and the sequence mark maximum is that the data bit taken according to the described first sequence mark in the PDCP PDU is true Fixed.
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| WO2022105925A1 (en) * | 2020-11-20 | 2022-05-27 | 中国移动通信有限公司研究院 | Transmission method, notification method, transmission unit, and network-side device |
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