CN109698736A - A kind of repeated data transmission method and device - Google Patents
A kind of repeated data transmission method and device Download PDFInfo
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- CN109698736A CN109698736A CN201711002557.9A CN201711002557A CN109698736A CN 109698736 A CN109698736 A CN 109698736A CN 201711002557 A CN201711002557 A CN 201711002557A CN 109698736 A CN109698736 A CN 109698736A
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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
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/189—Transmission or retransmission of more than one copy of a message
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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
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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
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1896—ARQ related signaling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
Abstract
The embodiment of the present invention provides a kind of repeated data transmission method and device, the repeated data includes: the first branch data and the second branch data, which comprises the first RLC entity of data sending terminal receives the first feedback information of the 3rd RLC entity of data receiver；After the first RLC entity receives first feedback information, the first notification information is sent to the 2nd RLC entity of data sending terminal；Wherein, first feedback information is used to indicate first branch data and is received by the 3rd RLC entity；First notification information, which is used to indicate the 2nd RLC entity, to be stopped sending the second branch data.Through the embodiment of the present invention can be to avoid the unnecessary re-transmission of repeated data, while improving the reliability of data transmission.
Description
Technical field
The present embodiments relate to field of communication technology, in particular to a kind of repeated data transmission method and device.
Background technique
In order to meet the growing communication requirement of people, 5G (The 5thGeneration) standard such as fire such as
In the formulation of the bitter edible plant.5G is NR (New Radio) in the 3 gpp standards.Since the application scenarios of 5G technology include highly reliable low time delay
(Ultra Reliable Low Latency Communication, referred to as: URLLC) scene, the URLLC scene pass data
Defeated reliability and propagation delay time require strictly, to propose in 3GPP standard repeat using packet data convergence protocol thus
(Packet Data Convergence Protocol duplication, referred to as: PDCP duplication) technology increases
Addend according to transmission reliability and shorten data transmission delay.
PDCP duplication is by wireless heterogeneous networks (Radio Resource Control, referred to as: RRC) configuration
, radio bearer (Radio Bearer, referred to as: RB) corresponding two wireless spread-spectrum technologies (Radio Link Control,
Referred to as: RLC) entity, two logic channels (Logical Channel, referred to as: LCH) handle duplicated PDCP simultaneously
PDUs (Packet Data Unit, Packet Data Unit, referred to as: PDU).
So-called Duplication is exactly to send identical PDCP PDU twice, and one in original RLC entity
Transmission in (original RLC entity), another transmission in additional RLC entity (additional RLC entity),
PDCP PDU in this way will be sent twice.PDCP duplication polymerize (Carrier Aggregation, letter in carrier wave
Claim: CA) it can apply in the both of which such as mode and dual link (Dual Connectivity, referred to as: DC) mode.Wherein,
Using identical media access control (Media Access Control, referred to as: MAC) entity in CA mode, and in DC mode
Then use different MAC entities.
Fig. 7 is the schematic diagram of the transmission process of the PDCP PDU of the prior art.As shown in fig. 7, in the prior art, such as LTE
Standard, PDCP PDU are segmented/are packaged and add head in rlc layer, be then transferred to MAC layer, MAC PDU may include one or
Multiple RLC PDU.Wherein rlc layer can retransmit data packet according to the report of lower layer, and MAC has HARQ also to increase the biography of data packet
Defeated number, to improve the reliability of data packet transmission.
As shown in the above, if existing PDCP duplication technology has the disadvantage in that transmitting terminal was sent
One of PDCP PDU in two PDCP PDUs is properly received receiving end, for transmitting terminal, another PDCP
PDU still can be transmitted/be retransmitted, and until another PDCP PDU also transmission success, cause unnecessary re-transmission.In addition, if only
One MAC entity transmits two PDCP PDUs, then the two of duplication PDCP PDUs is possible to same
It is transmitted in MAC PDU, such case then reduces the reliability of data transmission.
Summary of the invention
To solve disadvantages mentioned above of the existing technology, the embodiment of the present invention provides a kind of repeated data transmission method and dress
It sets.
In a first aspect, the embodiment of the present invention provides a kind of repeated data transmission method, the repeated data includes first point
Branch data and the second branch data, which comprises
First RLC entity of data sending terminal receives the first feedback information of the 3rd RLC entity of data receiver；
After the first RLC entity receives first feedback information, sent to the 2nd RLC entity of data sending terminal
First notification information；
Wherein, first feedback information is used to indicate first branch data and is received by the 3rd RLC entity；
First notification information, which is used to indicate the 2nd RLC entity, to be stopped sending the second branch data.
Second aspect, the embodiment of the present invention also provide a kind of repeated data transmission method, and the repeated data includes first
Branch data and the second branch data, which comprises
After 3rd RLC entity of data receiver receives first branch data, to the first RLC of data sending terminal
Entity sends the first feedback information；And the second notification information is sent to the 4th RLC entity of data receiver；
The 4th RLC entity stops receiving the second branch data according to second notification information；
Wherein, first feedback information is used to indicate first branch data and is received by the 3rd RLC entity；
Second notification information, which is used to indicate the 4th RLC entity, to be stopped receiving the second branch data.
The third aspect, the embodiment of the present invention provide a kind of electronic equipment, which includes: first memory and first
Processor, the first processor and the first memory complete mutual communication by the first bus；Described first deposits
Reservoir is stored with the program instruction that can be executed by the first processor, and the first processor calls described program instruction can
Execute following method: the first RLC entity of data sending terminal receives the first feedback letter of the 3rd RLC entity of data receiver
Breath；After the first RLC entity receives first feedback information, first is sent to the 2nd RLC entity of data sending terminal
Notification information；Wherein, first feedback information is used to indicate first branch data and is connect by the 3rd RLC entity
It receives；First notification information, which is used to indicate the 2nd RLC entity, to be stopped sending the second branch data.
Fourth aspect, the embodiment of the present invention also provide a kind of electronic equipment, which includes: second memory and
Two processors, the second processor and the second memory complete mutual communication by the second bus；Described second
Memory is stored with the program instruction that can be executed by the second processor, and the second processor calls described program to instruct energy
Enough execute following method: after the 3rd RLC entity of data receiver receives first branch data, to data sending terminal
First RLC entity sends the first feedback information, so that the first RLC entity is sent according to first feedback information to data
The 2nd RLC entity at end sends the first notification information；And the second notification information is sent to the 4th RLC entity of data receiver；
The 4th RLC entity stops receiving the second branch data according to second notification information；Wherein, first feedback information
First branch data is used to indicate to be received by the 3rd RLC entity；Second notification information is used to indicate described
4th RLC entity stops receiving the second branch data.
5th aspect, the embodiment of the present invention provide a kind of the first readable storage medium storing program for executing of computer, are stored thereon with the first meter
Calculation machine program, first computer program realize following method: the first RLC entity of data sending terminal when being executed by processor
Receive the first feedback information of the 3rd RLC entity of data receiver；The first RLC entity receives first feedback letter
After breath, the first notification information is sent to the 2nd RLC entity of data sending terminal；Wherein, first feedback information is used to indicate
First branch data is received by the 3rd RLC entity；It is real that first notification information is used to indicate the 2nd RLC
Body stops sending the second branch data.
6th aspect, the embodiment of the present invention provide a kind of the second readable storage medium storing program for executing of computer, are stored thereon with the second meter
Calculation machine program, the second computer program realize following method: the 3rd RLC entity of data receiver when being executed by processor
After receiving first branch data, the first feedback information is sent to the first RLC entity of data sending terminal；And it is connect to data
4th RLC entity of receiving end sends the second notification information；The 4th RLC entity stops receiving according to second notification information
Second branch data；Wherein, first feedback information is used to indicate first branch data by the 3rd RLC entity
It receives；Second notification information, which is used to indicate the 4th RLC entity, to be stopped receiving the second branch data.
Repeated data transmission method and device provided in an embodiment of the present invention, if the transmitting terminal of repeated data and receiving end are obtained
Know one of branch data receiving end successful reception of the repeated data, and another branch data is not yet completed to pass
It is defeated, then it is not retransmited by the RLC entity of another branch data of transmitting terminal and the PDCP layer or rlc layer notification transmission of receiving end
Or receive, to avoid the unnecessary re-transmission of repeated data, while improving the reliability of data transmission.
Detailed description of the invention
Fig. 1 is the flow diagram of repeated data transmission method provided in an embodiment of the present invention；
Fig. 2 is the flow diagram for the repeated data transmission method that further embodiment of this invention provides；
Fig. 3 is the transmission schematic diagram of the dedicated MAC entity of configuration provided in an embodiment of the present invention；
Fig. 4 is the transmission schematic diagram provided in an embodiment of the present invention for sharing identical MAC entity；
Fig. 5 is the structural block diagram of electronic equipment provided in an embodiment of the present invention；
Fig. 6 is the structural block diagram for the electronic equipment that further embodiment of this invention provides；
Fig. 7 is the schematic diagram of the transmission process of existing PDCP PDU.
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 solution in the embodiment of the present invention is explicitly described, it is clear that described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Fig. 1 is the flow diagram of repeated data transmission method provided in an embodiment of the present invention.In the embodiment of the present invention
Repeated data includes the first branch data and the second branch data, as shown in Figure 1, the repeated data transmission method includes following step
It is rapid:
S101, data sending terminal the first RLC entity receive data receiver the 3rd RLC entity the first feedback letter
Breath；
After S102, the first RLC entity receive first feedback information, the 2nd RLC to data sending terminal is real
Body sends the first notification information；
Wherein, first feedback information is used to indicate first branch data and is received by the 3rd RLC entity；
First notification information, which is used to indicate the 2nd RLC entity, to be stopped sending the second branch data.
Specifically, if data sending terminal (referred to as starting) is base station, data receiver (abbreviation receiving end) is user terminal, is deposited
In two kinds of situations: first, the first RLC entity and the 2nd RLC entity are all in the same base station, and base station is for the end
It is carrier wave polymerization for end；Second, the first RLC entity and the 2nd RLC entity respectively two different base stations (with
It is lower to be distinguished with base station A and base station B) on, base station A and B is dual link for the user terminal.The first RLC of base station A is real
Body is responsible for sending the first branch data to user terminal, and the 2nd RLC entity of base station B is responsible for sending the second branch to user terminal
Data, the 3rd RLC entity of user terminal are responsible for receiving first branch data or second branch data.When described
After if three RLC entities receive first branch data, to the first RLC entity send the first feedback information, first
RLC entity receives first feedback information, after knowing that first branch data is received by the 3rd RLC, then to the 2nd RLC
Entity sends the first notification information, notifies the 2nd RLC entity repeated data to be properly received by user terminal, the 2nd RLC entity
Stop sending second branch data after receiving first notification information, to avoid unnecessary re-transmission.Wherein, institute
It states the first RLC entity and the 2nd RLC entity is communicated by the interface between base station A and base station B.Carrier wave is polymerize
The case where, base station A and base station B it is practical be exactly the same base station, in this case between the first RLC entity and the 2nd RLC entity
Communication be exactly inside of base station communication.
If originator is user terminal, receiving end is base station, then the first RLC entity and the 2nd RLC entity then exist
On the rlc layer of the user terminal, the 3rd RLC is physically located at base station, other processes are then same as described above, herein not
It repeats again.
It should be noted that in the embodiment of the present invention it is all use " first ", " second " and " third " statements be for
Distinguish three non-equal entities of same names or non-equal parameter, it is seen that " first ", " second ", " third " only for
The convenience of statement should not be construed as the restriction to the embodiment of the present invention.
Repeated data transmission method provided in an embodiment of the present invention, if originator and receiving end know the repeated data wherein
One branch data is properly received by receiving end, and another branch data is not yet completed to transmit, then passes through Successful transmissions data
The RLC entity of RLC entity notification transmission another branch data do not retransmit；In this way, using the first branch data and the
On the basis of the transmission of two branch datas progress repeated data is to guarantee data transmission credibility, avoid in repeated data transmission not
Necessary re-transmission reduces repeated data propagation delay time, improves the data transmission efficiency between originator and receiving end.
On the basis of the above embodiments, this method is described: the first RLC entity receives first feedback information
Afterwards, the first notification information is sent to the 2nd RLC entity of data sending terminal, specifically:
The first PDCP layers of transmission after the first RLC entity receives first feedback information, to data sending terminal
First instruction information；
Described first PDCP layers according to the first instruction information to send first to the 2nd RLC entity of data sending terminal logical
Know information；
Wherein, the first instruction information is used to indicate first branch data and is received by data receiver.
Specifically, the first RLC entity of originator and the 2nd RLC entity by originator the first PDCP layer communicated: send out
The first RLT entity at end sends the first branch data to the 3rd RLC entity of receiving end, and the 3rd RLC entity is properly received described the
One branch data simultaneously sends the first feedback information to the first RLC entity；First RLC entity receives first feedback letter
After breath, after knowing that first branch data is received by the 3rd RLC, then to the first PDCP layers of transmission the first instruction information, lead to
Know that the first PDCP layers of first branch data are received by receiving end, then the described first PDCP layers to the second branch of responsible transmission
2nd RLC entity of data sends the first notification information, and the 2nd RLC entity is notified to stop sending the second branch data.
As shown in the above: repeated data transmission method provided in an embodiment of the present invention, by using first branch's number
According to the transmission for carrying out repeated data with the second branch data, under the premise of the first branch data correctly transmits, if second point
Branch data not yet transmission success, for originator, the second branch data will not then be further continued for sending, thus guaranteeing data transmission
On the basis of reliability, unnecessary re-transmission in repeated data transmission is avoided, improves the data transmission between originator and receiving end
Efficiency.
On the basis of the various embodiments described above, the method also includes: the 2nd RLC entity receives the 4th of data receiver
The second feedback information that RLC entity is sent, second feedback information are used to indicate the repeated data by the third
RLC entity receives.
Specifically, the first RLC entity of originator is for sending the first branch data, and the 2nd RLC entity of originator is for sending out
Send the second branch data；Correspondingly, the 3rd RLC entity of receiving end is for receiving the first branch data, the 4th RLC entity of receiving end
For receiving the second branch data.Unlike the embodiments above, the 2nd RLC entity of originator is in addition to receiving the first of originator
Outside first notification information of RLC entity, the second feedback information of the 4th RLC entity of receiving end can be also received, to guarantee to start
Information equity and consistency between receiving end, realize the reliability transmission of repeated data.
It should be noted that all statements for using " first ", " second ", " third " and " the 4th " in the embodiment of the present invention
It is for distinguishing four non-equal entities of same names or non-equal parameter, it is seen that " first ", " second ", " third "
" the 4th " should not be construed as the restriction to the embodiment of the present invention only for the convenience of statement, and subsequent embodiment is not another to this
One explanation.
On the basis of the above embodiments, the method also includes: if the first PDCP layers know the data sending terminal
Operating mode is that carrier wave polymerize CA mode, and the media access control MAC layer of data sending terminal is then in the first dedicated MAC of pre-configuration
Entity sends second branch data, for the data receiver media access control MAC layer the second of pre-configuration
Dedicated MAC entity receives second branch data.
Specifically, if originator is base station, the operating mode of base station includes two ways: carrier wave polymerize CA mode and dual link
DC mode.Generally, so-called dual link refers to the bandwidth resources and limited coverage area due to single base station, to meet user's
Capacity requirement and covering require, and concentrate the radio resource of multiple base stations to provide the connection type of service for user.And so-called load
Wave aggregation scheme is the concentration of the radio resource of multiple minizones based on the same base station.Accordingly, if originator is that user is whole
End, if the user terminal has connection simultaneously with multiple (generally 2) base stations simultaneously, the operating mode of user terminal is then
Dual link mode；Conversely, the user terminal is claimed to work if the user terminal synchronization is only connect with a base station
In carrier aggregation mode.
If work of starting is in CA mode, in the prior art, originator is using the same MAC entity to two from RLC entity
A identical first branch data and the second branch data are transmitted, and allowing for two identical data packets in this way may be same
It is transmitted in one MAC PDU, the requirement of improve data transfer reliability is not achieved.Therefore, the embodiment of the present invention is originator in advance
The first dedicated MAC entity is configured, correspondingly, configures the second dedicated MAC entity in advance for receiving end.The first dedicated MAC entity
For sending the second branch data of repeated data, the second dedicated MAC entity is used to receive the second branch of repeated data
Data, and the first dedicated MAC entity and the second dedicated MAC entity are not used in the number for transmitting other non-duplicate datas
According to packet.It is starting, the first dedicated MAC entity and original MAC entity are mapped on identical physical channel.Described first specially
Can be identical with the function of original MAC entity with MAC entity, partial function can also be only included, is reflected for example including channel
It penetrates, the function of HARQ (hybrid automatic repeat-request), and the configuration of HARQ can be consistent with original MAC entity, other
It can be omitted if function (such as scheduling request SR function, buffer status report BSR function etc.).In receiving end, the second dedicated MAC
Entity and original MAC entity are mapped on identical physical channel.The second dedicated MAC can be with the function of original MAC entity
It is identical, partial function can also be only included, the function for example including channel mapping, HARQ (hybrid automatic repeat-request),
And the configuration of HARQ can be consistent with original MAC entity, other function (such as scheduling request SR function, buffer status report
Accuse BSR function etc.) then it can be omitted.
In this way, if PDCP layers of the first to start knows that in CA mode, first branch data is sent for originator work
To original MAC entity, and second branch data is sent to dedicated MAC entity, thus avoid the first branch data and
There is mistake in MAC layer transmission in second branch data, improves the reliability of repeated data transmission.
Supplementary explanation is additionally needed, dedicated MAC entity is existing with repeated data sending function, if again
Multiple sending function deactivates, then dedicated MAC entity will no longer transmit data.
On the basis of the various embodiments described above, the method also includes: if the first PDCP layers know first branch number
It is pre-configured to be in identical media access control MAC layer transmission according to second branch data, then is first branch data
It distributes the first interim PDCP mark and is identified for the interim PDCP of second branch data distribution second, for media access
Control MAC layer is that first branch data distributes the first MAC PDU and is that second branch data distributes the 2nd MAC
PDU。
Specifically, PDCP layers of the first of originator before transmitting repeated data, for originator distribution MAC layer resource situation
It is known, if originator is pre-configured to first branch data and second branch data in identical media access control
MAC layer is transmitted, then the first PDCP layers can be then packaged to first branch data and second branch data
Or add and distribute interim PDCP mark when first-class processing for it, in this way, the MAC layer is receiving the first branch data and second point
When branch data, different MAC PDU can be distributed according to respective interim PDCP mark, so as to use the same MAC layer to pass
Defeated repeated data improves the reliability of data transmission without will cause transmission failure.
On the basis of the various embodiments described above, the method also includes: data sending terminal by the first MAC control element to
Data receiver sends the active information of repeated data, carries out weight after receiving the active information for the data receiver
Complex data transmission；Wherein, the active information includes the first PDCP PDU SN parameter, and the first PDCP PDU SN parameter is used
In the sequence for indicating the data sending terminal starting PDCP data packet for carrying out repeated data transmission synchronous with the data receiver
Row number.
Specifically, originator and receiving end are received before carrying out repeated data transmission in order to enable originator is synchronous with receiving end holding
Hair, originator first pass through MAC control element (abbreviation MAC CE) and send active information to receiving end, and the active information, which carries, to be used for
It indicates the PDCP PDU SN parameter for originating PDCP packet sequence number in repeated data, after receiving end receives the active information, leads to
The PDCP PDU SN parameter for parsing and carrying in the active information acquisition MAC CE is crossed, is carried out from the starting PDCP data packet
The repeated data is received, to keep data transmission synchronization with originator, ensure that the reliability of data transmission.
On the basis of the above embodiments, the method also includes: data sending terminal by the 2nd MAC control element to number
The deactivation information that repeated data is sent according to receiving end, stops after receiving the deactivation information for the data receiver
Repeated data transmission；Wherein, the deactivation information includes the 2nd PDCP PDU SN parameter, the 2nd PDCP PDU SN ginseng
Number is used to indicate the data sending terminal termination PDCP data packet for stopping repeated data transmission synchronous with the data receiver
Sequence number.
Specifically, all data packets in repeated data are fully completed after transmission or the biography of the repeated data
When defeated process needs to stop, originator can be sent to receiving end by MAC control element and deactivate information, and the deactivation information carries
It is used to indicate the PDCP PDU SN parameter that PDCP packet sequence number is terminated in repeated data, receiving end receives the deactivation
After information, by parsing the PDCP PDU SN parameter carried in the deactivation acquisition of information MAC CE, thus receiving end
Only then stop receiving repeated data after PDCP data packet, keep data transmission synchronization with originator, ensure that the reliable of data transmission
Property.
Fig. 2 is the flow diagram for the repeated data transmission method that further embodiment of this invention provides.As shown in Fig. 2, should
Method the following steps are included:
S201, data receiver the 3rd RLC entity receive first branch data after, to the of data sending terminal
One RLC entity sends the first feedback information, for the first RLC entity according to first feedback information to data sending terminal
The 2nd RLC entity send the first notification information；And the second notification information is sent to the 4th RLC entity of data receiver；
S202, the 4th RLC entity stop receiving the second branch data according to second notification information；
Wherein, first feedback information is used to indicate first branch data and is received by the 3rd RLC entity；
Second notification information, which is used to indicate the 4th RLC entity, to be stopped receiving the second branch data.
Specifically, the 3rd RLC entity of receiving end is used to receive the first branch data that originator is sent, the 4th RLC of receiving end
Entity is used to receive the second branch data that originator is sent；After the 3rd RLC entity receives first branch data, to
First RLC entity of originator sends the first feedback information, notifies the first RLC entity, and the first RLC entity receives described the
Know that transmission is completed in the first branch data after one feedback information, then send the first notification information to the 2nd RLC entity, accuses
Know that the 2nd RLC entity stops sending the second branch data；Meanwhile the 3rd RLC entity also to send second to the 4th RLC entity logical
Know information, informs that the stopping of the 4th RLC entity continues to the second branch data；4th RLC entity receives the second notification information
Then stop receiving the second branch data afterwards.
In this way, the 3rd RLC entity of receiving end passes through the first feedback information under the premise of the first branch data is completed to transmit
It informs that the 2nd RLC entity of originator stops sending the second branch data, informs that the 4th RLC of receiving end is real by the second notification information
Body stops receiving the second branch data, to guarantee the information equity and consistency between receiving end and originator, avoids repeat number
According to re-transmission unnecessary in transmission, while guaranteeing the reliability of data transmission.
On the basis of the above embodiments, the 3rd RLC entity of the data receiver of the method receives described first
After branch data, the second notification information is sent to the 4th RLC entity of data receiver, specifically:
After 3rd RLC entity of the data receiver receives first branch data, Xiang Suoshu data receiver
The 2nd PDCP layers of transmission second indication information；
Described 2nd PDCP layers according to the second indication information to the 4th RLC entity send the second notification information；
Wherein, the second indication information is used to indicate the 3rd RLC entity and has received the first branch data.
Specifically, the 3rd RLC entity with the 4th RLC entity of receiving end by receiving end the 2nd PDCP layer communicated: send out
The first RLT entity at end sends the first branch data to the 3rd RLC entity of receiving end, and the 3rd RLC entity is properly received described the
To the second PDCP layers of transmission second indication information after one branch data, notify that the 2nd PDCP layers of first branch data are connect
It receives, then the described 2nd PDCP layers of the 4th RLC entity the second notification information of transmission to the second branch data of responsible reception, notice
4th RLC entity stops receiving the second branch data.
As shown in the above: repeated data transmission method provided in an embodiment of the present invention, by using first branch's number
According to the transmission for carrying out repeated data with the second branch data, under the premise of the first branch data correctly transmits, if second point
Branch data not yet transmission success will not then receive the second branch data for receiving end again, thus guaranteeing that data transmission is reliable
Property on the basis of, avoid repeated data transmit in unnecessary re-transmission, improve the data transmission efficiency between originator and receiving end.
On the basis of the various embodiments described above, the method also includes: the 4th RLC entities to repeating the second of transmitting terminal
RLC entity sends the second feedback information, and second feedback information is used to indicate the repeated data by the 3rd RLC
Entity receives.
Specifically, the first RLC entity of originator is for sending the first branch data, and the 2nd RLC entity of originator is for sending out
Send the second branch data；Correspondingly, the 3rd RLC entity of receiving end is for receiving the first branch data, the 4th RLC entity of receiving end
For receiving the second branch data.Unlike the embodiments above, the 3rd RLC entity of receiving end is in addition to the first of originator
First feedback information of RLC entity, so that the first RLC entity is sent outside the first notification information to the 2nd RLC entity, the of receiving end
Four RLC entities also can send the second feedback information to the 2nd RLC entity of originator, to guarantee the information between originator and receiving end
Equity and consistency realize the reliability transmission of repeated data.
Technical solution in order to better illustrate the present invention, 3 specific embodiments presented below, using base station as hair
End for user terminal is as receiving end, is described specific interactive process between the two:
Embodiment 1, base station operating mode be CA mode
Fig. 3 is the transmission schematic diagram of the dedicated MAC entity of configuration provided in an embodiment of the present invention.
Step 1, base station send activation (or configuration) information of repeated data to user terminal (abbreviation UE).Active information
It is transmitted by MAC CE, includes PDCP PDU SN in the MAC CE, it is synchronous for receiving and dispatching both ends.Optionally, if active information not
Including PDCP PDU SN, then user terminal is then immediately ready for receiving repeated data after receiving the active information；
Step 2, UE carry out repeated data transmission mode since above-mentioned PDCP PDU SN, it is preferable that repeated data
Two branch datas are all with identical PDCP PDU SN transmission, to reduce the complexity of receiving end data merging；
Step 3, base station transmit the first branch data by original MAC entity, pass through the first dedicated MAC of pre-configuration
The second branch data of entity transmission；User terminal receives the first branch data by original MAC entity, passes through the of pre-configuration
Two application-specific entities receive the second branch data；
Step 4, when the first branch data of originator has been properly received by receiving end, and at this time, the second branch data is still
Non- transmission success then notifies its corresponding data of the 2nd RLC entity of not yet transmission success to be correctly received, at this time can be with
Stop transmission of the 2nd RLC entity to the data packet.When receiving end has correctly received the first branch data, then inside receiving end
It notifies the 4th RLC entity its corresponding data correctly received, so guarantees that transmitting-receiving both ends are synchronous.
Wherein, PDCP layers be responsible for notice processes it is as follows: originator: the first PDCP layers receive the first RLC entity to first
After the correct transmission instruction of branch data, the 2nd RLC entity repeated data is notified to be properly received by receiving end.Receiving end: the
After two PDCP layers receives the instruction information for being properly received the first branch data of the 3rd RLC entity, the 4th RLC entity is notified
Repeated data is correctly received.After the 2nd RLC entity and the 4th RLC entity receive the instruction correctly transmitted, not followed by
It is continuous to send and receive the second branch data, while refreshing the relevant parameter of RLC transmission, such as reception state variable V R, transmission shape
State variable VT etc..
The process that rlc layer is responsible for notice is as follows: with the difference by the PDCP layer responsible process notified be by correctly send/
Received RLC entity directly notifies another RLC entity PDCP PDUx correctly transmission/reception.For example, the first RLC entity
Directly the 2nd RLC entity repeated data is notified correctly to send；3rd RLC entity directly notifies the 4th RLC entity repeated data
It has been properly received.
Step 5, when the transmission process of repeated data needs to stop, base station is sent to UE deactivates information, described to deactivate
Information living is transmitted by MAC CE, and it is when to stop passing to receive and dispatch both-end clearly that the MAC CE, which includes PDCP PDU SN,
It is defeated.If not including PDCP PDU SN, UE in the deactivation information after receiving the deactivation information, stop immediately
Only receive.
Embodiment 2 is pre-configured to be in the same MAC entity and is transmitted
Fig. 4 is the transmission schematic diagram provided in an embodiment of the present invention for sharing identical MAC entity.
The difference of embodiment 2 and embodiment 1: it without being pre-configured dedicated MAC entity for base station and user terminal, supports to repeat
Two branch datas of data are transmitted in the same MAC layer, that is, use the same MAC entity.Detailed process is as follows: the of base station
One PDCP layers is to increase temporary identifier to PDCP PDU, so that the RLC entity of rlc layer is clear and the Liang Ge branch number of repeated data
Corresponding relationship and MAC entity between are that two branch datas distribute different MAC PDU, avoid MAC entity by two points
Branch data are placed in the same MAC PDU.Remaining process and embodiment 1 are identical, no longer describe herein.
Embodiment 3, base station operating mode be dual link mode
When base station operation is in dual link mode, due to MAC layer can be used different MAC entities transmit the first branch data and
Second branch data, i.e., without being pre-configured dedicated MAC entity, without being the first branch data and second branch's number at PDCP layer
It is identified according to interim PDCP is distributed, therefore its process is identical as the process after the dedicated MAC entity of configuration, details are not described herein again.
Fig. 5 is the structural block diagram of electronic equipment provided in an embodiment of the present invention.As shown in figure 5, the electronic equipment includes:
One memory 502 and first processor 501, the first processor 501 and the first memory 502 pass through the first bus
503 complete mutual communication；The first memory 502 is stored with the program instruction that can be executed by the processor, described
First processor 501 calls described program instruction to be able to carry out following method, for example, the first RLC of data sending terminal is real
Body receives the first feedback information of the 3rd RLC entity of data receiver；The first RLC entity receives first feedback
After information, the first notification information is sent to the 2nd RLC entity of data sending terminal；Wherein, first feedback information is for referring to
Show that first branch data is received by the 3rd RLC entity；First notification information is used to indicate the 2nd RLC
Entity stops sending the second branch data.
Fig. 6 is the structural block diagram for the electronic equipment that further embodiment of this invention provides.As shown in fig. 6, the electronic equipment packet
Include: second memory 602 and second processor 601, the second processor 601 and the second memory 602 pass through second
Bus 603 completes mutual communication；The second memory 602 is stored with the program instruction that can be executed by the processor,
The second processor 601 calls described program instruction to be able to carry out following method, for example, the third of data receiver
After RLC entity receives first branch data, the first feedback information is sent to the first RLC entity of data sending terminal, with
The first notice is sent to the 2nd RLC entity of data sending terminal according to first feedback information for the first RLC entity to believe
Breath；And the second notification information is sent to the 4th RLC entity of data receiver；The 4th RLC entity is logical according to described second
Know that information stops receiving the second branch data；Wherein, first feedback information be used to indicate first branch data by
The 3rd RLC entity receives；Second notification information, which is used to indicate the 4th RLC entity, to be stopped receiving second branch's number
According to.
The embodiment of the present invention also provides a kind of the first program product of computer, and first program product of computer includes depositing
The first computer program in non-transient computer readable storage medium is stored up, first computer program includes that program refers to
It enables, when described program instruction is computer-executed, computer is able to carry out method provided by above-mentioned each method embodiment, example
It such as include: the first feedback information that the first RLC entity of data sending terminal receives the 3rd RLC entity of data receiver；It is described
After first RLC entity receives first feedback information, the first notice letter is sent to the 2nd RLC entity of data sending terminal
Breath；Wherein, first feedback information is used to indicate first branch data and is received by the 3rd RLC entity；It is described
First notification information, which is used to indicate the 2nd RLC entity, to be stopped sending the second branch data.
The embodiment of the present invention also provides a kind of the second program product of computer, and second program product of computer includes depositing
The second computer program in non-transient computer readable storage medium is stored up, the second computer program includes that program refers to
It enables, when described program instruction is computer-executed, computer is able to carry out method provided by above-mentioned each method embodiment, example
After including: the first branch data as described in the 3rd RLC entity of data receiver receives, to the first RLC of data sending terminal
Entity sends the first feedback information, for the first RLC entity according to first feedback information to the of data sending terminal
Two RLC entities send the first notification information；And the second notification information is sent to the 4th RLC entity of data receiver；Described
Four RLC entities stop receiving the second branch data according to second notification information；Wherein, first feedback information is for referring to
Show that first branch data is received by the 3rd RLC entity；Second notification information is used to indicate the 4th RLC
Entity stops receiving the second branch data.
The embodiment of the present invention also provides a kind of the first readable storage medium storing program for executing of computer, first computer-readable storage medium
Matter stores the first computer program, and first computer program provides the above-mentioned each method embodiment of the computer execution
Method, for example, the first RLC entity of data sending terminal receives the first feedback of the 3rd RLC entity of data receiver
Information；After the first RLC entity receives first feedback information, the is sent to the 2nd RLC entity of data sending terminal
One notification information；Wherein, first feedback information is used to indicate first branch data and is connect by the 3rd RLC entity
It receives；First notification information, which is used to indicate the 2nd RLC entity, to be stopped sending the second branch data.
The embodiment of the present invention also provides a kind of the second readable storage medium storing program for executing of computer, the second computer readable storage medium
Matter stores second computer program, and the second computer program provides the above-mentioned each method embodiment of the computer execution
Method, for example, after the 3rd RLC entity of data receiver receives first branch data, to data sending terminal
The first RLC entity send the first feedback information, for the first RLC entity according to first feedback information to data send out
2nd RLC entity of sending end sends the first notification information；And the second notice letter is sent to the 4th RLC entity of data receiver
Breath；The 4th RLC entity stops receiving the second branch data according to second notification information；Wherein, first feedback
Information is used to indicate first branch data and is received by the 3rd RLC entity；Second notification information is used to indicate
The 4th RLC entity stops receiving the second branch data.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (12)
1. a kind of repeated data transmission method, which is characterized in that the repeated data includes the first branch data and the second branch
Data, which comprises
First RLC entity of data sending terminal receives the first feedback information of the 3rd RLC entity of data receiver；
After the first RLC entity receives first feedback information, first is sent to the 2nd RLC entity of data sending terminal
Notification information；
Wherein, first feedback information is used to indicate first branch data and is received by the 3rd RLC entity；It is described
First notification information, which is used to indicate the 2nd RLC entity, to be stopped sending the second branch data.
2. the method according to claim 1, wherein the first RLC entity receives first feedback letter
After breath, the first notification information is sent to the 2nd RLC entity of data sending terminal, specifically:
The first PDCP layers of transmission first after the first RLC entity receives first feedback information, to data sending terminal
Indicate information；
Described first PDCP layers according to it is described first instruction information to the 2nd RLC entity of data sending terminal send first notice believe
Breath；
Wherein, the first instruction information is used to indicate first branch data and is received by data receiver.
3. the method according to claim 1, wherein further include:
2nd RLC entity receives the second feedback information that the 4th RLC entity of data receiver is sent, second feedback information
The repeated data is used to indicate to be received by the 3rd RLC entity.
4. the method according to claim 1, wherein further include:
If the first PDCP layers of operating mode for knowing the data sending terminal are that carrier wave polymerize CA mode, the media of data sending terminal
Access control MAC layer then sends second branch data in the first dedicated MAC entity of pre-configuration, for the data receiver
The media access control layer MAC layer at end receives second branch data in the second dedicated MAC entity of pre-configuration.
5. the method according to claim 1, wherein further include:
If the first PDCP layers know that first branch data and second branch data are pre-configured to be in the access of identical media
MAC layer transmission is controlled, then for first branch data the first interim PDCP of distribution mark and be second branch data point
With the second interim PDCP mark, so that the media access control MAC layer is that first branch data distributes the first MAC PDU
The 2nd MAC PDU is distributed with for second branch data.
6. -5 any method according to claim 1, which is characterized in that further include:
Data sending terminal sends the active information of repeated data by the first MAC control element to data receiver, for described
Data receiver carries out repeated data transmission after receiving the active information；
Wherein, the active information includes the first PDCP PDU SN parameter, and the first PDCP PDU SN parameter is used to indicate
The sequence number of the data sending terminal starting PDCP data packet for carrying out repeated data transmission synchronous with the data receiver.
7. according to the method described in claim 6, it is characterized by further comprising:
Data sending terminal sends the deactivation information of repeated data by the 2nd MAC control element to data receiver, for institute
It states after data receiver receives the deactivation information and stops repeated data transmission；
Wherein, the deactivation information includes the 2nd PDCP PDU SN parameter, and the 2nd PDCP PDU SN parameter is for referring to
Show the sequence number of the data sending terminal termination PDCP data packet for stopping repeated data transmission synchronous with the data receiver.
8. a kind of repeated data transmission method, which is characterized in that the repeated data includes the first branch data and the second branch
Data, which comprises
After 3rd RLC entity of data receiver receives first branch data, to the first RLC entity of data sending terminal
Send the first feedback information, for the first RLC entity according to first feedback information to the 2nd RLC of data sending terminal
Entity sends the first notification information；And the second notification information is sent to the 4th RLC entity of data receiver；
The 4th RLC entity stops receiving the second branch data according to second notification information；
Wherein, first feedback information is used to indicate first branch data and is received by the 3rd RLC entity；It is described
Second notification information, which is used to indicate the 4th RLC entity, to be stopped receiving the second branch data.
9. according to the method described in claim 8, it is characterized in that, the 3rd RLC entity of the data receiver receives institute
After stating the first branch data, the second notification information is sent to the 4th RLC entity of data receiver, specifically:
After 3rd RLC entity of the data receiver receives first branch data, the of Xiang Suoshu data receiver
Two PDCP layers of transmission second indication information；
Described 2nd PDCP layers according to the second indication information to the 4th RLC entity send the second notification information；
Wherein, the second indication information is used to indicate the 3rd RLC entity and has received the first branch data.
10. method according to claim 8 or claim 9, which is characterized in that further include:
4th RLC entity sends the second feedback information to the 2nd RLC entity of data sending terminal, and second feedback information is used for
Indicate that the repeated data is received by the 3rd RLC entity.
11. a kind of electronic equipment characterized by comprising
Memory and processor, the processor and the memory complete mutual communication by bus；The memory
It is stored with the program instruction that can be executed by the processor, the processor calls described program instruction to be able to carry out right such as and wants
Seek 1 to 10 any method.
12. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program
The method as described in claims 1 to 10 is any is realized when being executed by processor.
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