CN109996261A - Data transmission method and device based on MAC layer data packet replication - Google Patents
Data transmission method and device based on MAC layer data packet replication Download PDFInfo
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- CN109996261A CN109996261A CN201811644018.XA CN201811644018A CN109996261A CN 109996261 A CN109996261 A CN 109996261A CN 201811644018 A CN201811644018 A CN 201811644018A CN 109996261 A CN109996261 A CN 109996261A
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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
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
Abstract
The embodiment of the present invention provides a kind of data transmission method and device based on MAC layer data packet replication, which comprises obtains the target packet of Packet Data Convergence Protocol PDCP layers of transmission；The target packet is intervened into control MAC layer in media and is copied into more parts；Receiving end is sent by physical PHY layer by several pieces target packet, and remaining target packet is stored in the buffer area of the MAC layer.The embodiment of the present invention provides a kind of data transmission method and device based on MAC layer data packet replication, it is authorized based on configuration, data packet is replicated in MAC layer, and partial data packet is temporarily stored in MAC layer, while reducing time delay and improving transmission reliability, the utilization rate of frequency spectrum resource can be improved.
Description
Technical field
The present embodiments relate to field of communication technology more particularly to a kind of data biographies based on MAC layer data packet replication
Transmission method and device.
Background technique
With the growth of mobile data services flow, 5G accesses net (NR) technology and also therefore grows rapidly.The typical field of NR
Scape is enhancing mobile broadband (eMBB), extensive Internet of Things (mMTC), highly reliable low time delay (URLLC), and wherein URLLC's is main
Technical requirements are that superelevation is reliable and ultralow time delay, and low time delay requires to reduce number of retransmissions.
In the prior art, the requirement for NR URLLC business to low time delay and high reliability, authorized spectrum band, which proposes, matches
It sets authorization (configured grant) and repeats the scheme of transmission K times (K repetitions) to meet.Configured
Grant is roughly the same with grant-free technology, to exempt to authorize scheduled transmission, fulfils resource tune ahead of schedule before data arrival
Degree waits time delay to reduce to dispatch.Configured grant also supports K repetitions to improve reliability in NR.
Base station is needed to wait for hybrid automatic repeat-request (Hybrid Automatic Repeat reQuest, HARQ)
(gNB) reception state of receiving end feedback data packet is different, the workflow of K repetition are as follows: exist including initial transmission
Interior, according to service reliability demand and/or user's universal service quality, configuring iterative transfer times K is in { 1,2,4,8 }
Then a certain numerical value is transmitted data packet by PDCP layers of K parts of duplication.K part data packet after duplication is assigned to not
Same logic channel (Logic Channel, LCH) is transmitted to MAC layer, as long as there is one to successfully arrive in these data packets
MAC layer, data packet can be transmitted via transmission block (Transport Block, TB).Therefore, this is allowed in same delay
Under the conditions of, transmission reliability improves K times.
The problem of constantly expanding due to data service flow, data congestion may result in for the occupancy of high-rise LCH, because
This another transmission mode is also suggested: multiple data blocks being transmitted by way of time diversity on same LCH, are had
Body running process is: after the duplication that PDCP layers are completed data packet, copied multiple data packets are by way of time diversity
It is transmitted via same LCH, it is desirable that the time interval of these data parlors is sufficiently small, is almost considered as same data packet.
After reaching MAC layer, it is desirable that MAC layer can be distributed in different TB respectively for them and be transmitted simultaneously, as long as having one
The TB transmission success of a carrying data packet then thinks data transmission success.
In the big application scenarios of NR tri-, requirement of the URLLC for time delay and reliability is all very high, therefore this support
The scheme of the configured grant of K repetition is commonly used in the transmission of URLLC business data packet.But also because
This business demand of URLLC, and combine unauthorized frequency range frequency spectrum resource discontinuous, it is difficult to guarantee time delay and reliability requirement
Feature, thus it is general not using URLLC as the main target of unauthorized frequency range research, therefore for supporting K repetition's
The motivation of configured grant is just less clear.In order to meet this requirement, may be limited in the value of unauthorized frequency range K
Be made as 1, that is to say, that PDCP layers no longer carry out data packet duplication, TB no longer carry out repeat transmission.However, this scheme
Implementation will lead to the sharply decline of transmission reliability, simultaneously because to the time delay of high-rise (PDCP layers) requesting retransmission data package packet
It will be up to 10ms, so this is to possible work in this kind of delay sensitive of unauthorized frequency range such as URLLC and the number of high reliability request
Influence according to business be it is very big, this problem will affect the NR ability to work of unauthorized frequency range.
Summary of the invention
A kind of overcome the above problem the purpose of the embodiment of the present invention is that providing or at least be partially solved the above problem
Data transmission method and device based on MAC layer data packet replication.
In order to solve the above-mentioned technical problem, on the one hand, the embodiment of the present invention provides a kind of based on MAC layer data packet replication
Data transmission method, comprising:
Obtain the target packet of Packet Data Convergence Protocol PDCP layers of transmission；
The target packet is intervened into control MAC layer in media and is copied into more parts；
Receiving end is sent by physical PHY layer by several pieces target packet, and remaining target packet is stored
In the buffer area of the MAC layer.
On the other hand, the embodiment of the present invention provides a kind of data transmission device based on MAC layer data packet replication, comprising:
Module is obtained, for obtaining the target packet of PDCP layers of Packet Data Convergence Protocol transmission；
Replication module is copied into more parts for the target packet to be intervened control MAC layer in media；
Transmission module, for sending receiving end by physical PHY layer for several pieces target packet, and by remaining mesh
Mark data packet is stored in the buffer area of the MAC layer.
In another aspect, the embodiment of the present invention provides a kind of electronic equipment, comprising:
Memory and processor, the processor and the memory complete mutual communication by bus；It is described to deposit
Reservoir is stored with the program instruction that can be executed by the processor, and it is above-mentioned that the processor calls described program instruction to be able to carry out
Method.
Another aspect, the embodiment of the present invention provide a kind of non-transient computer readable storage medium, are stored thereon with calculating
Machine program realizes above-mentioned method when the computer program is executed by processor.
The embodiment of the present invention provides a kind of data transmission method and device based on MAC layer data packet replication, based on configuration
Authorization, data packet is replicated in MAC layer, and partial data packet is temporarily stored in MAC layer, reduce time delay and improve transmission can
While by property, the utilization rate of frequency spectrum resource can be improved.
Detailed description of the invention
Fig. 1 is the data transmission method schematic diagram provided in an embodiment of the present invention based on MAC layer data packet replication；
Fig. 2 is the data transmission device schematic diagram provided in an embodiment of the present invention based on MAC layer data packet replication；
Fig. 3 is the structural schematic diagram of electronic equipment provided in an embodiment of the present invention.
Specific embodiment
In order to keep the purposes, technical schemes and advantages of the embodiment of the present invention clearer, implement below in conjunction with the present invention
Attached drawing in example, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment
It is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiment of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Fig. 1 is the data transmission method schematic diagram provided in an embodiment of the present invention based on MAC layer data packet replication, such as Fig. 1
Shown, the embodiment of the present invention provides a kind of data transmission method based on MAC layer data packet replication, executing subject be based on
The data transmission device of MAC layer data packet replication, hereinafter referred to as transmitting device, which comprises
Step S101, the target packet of Packet Data Convergence Protocol PDCP layers of transmission is obtained；
Step S102, the target packet is intervened into control MAC layer in media and is copied into more parts；
Step S103, receiving end is sent by physical PHY layer by several pieces target packet, and by remaining number of targets
The buffer area of the MAC layer is stored according to packet.
Specifically, the present embodiments relate to transmitting device include obtaining module, replication module and transmission module.
When data are transmitted by way of configured grant, tune can be fulfiled ahead of schedule before data is transmitted
Degree reserves resource block for transmission process.When there are data to be transmitted, the group packet of data packet, this process are carried out by PDCP layers first
The PDCP layers of group packet for only completing a data packet, then, PDCP layers send the target packet after group packet, pass through acquisition
Module obtains the target packet of PDCP layers of transmission, and target packet is sent to MAC layer.
The target packet is copied into more parts in MAC layer by replication module again.The number of duplication can be according to reality
The bearing capacity and actual needs of MAC layer, depend on the circumstances in.
Then, by transmission module by from copy come more parts of target packets in, select several pieces target packet
It is sent to receiving end by physical PHY layer, and remaining target packet is stored in the buffer area of MAC layer.To realize number
According to transmission.
The embodiment of the present invention provides a kind of data transmission method based on MAC layer data packet replication, is authorized based on configuration,
MAC layer replicates data packet, and partial data packet is temporarily stored in MAC layer, is reducing time delay and is improving transmission reliability
Meanwhile the utilization rate of frequency spectrum resource can be improved.
On the basis of the above embodiments, further, described to send out several pieces target packet by physical layer PHY layer
It is sent to receiving end, and remaining target packet is stored in after the buffer area of the MAC layer, further includes:
It has received in the preset time sent several pieces target packet to by PHY layer after receiving end from institute
The confirmation ACK information for stating receiving end feedback, then remove the target packet in the buffer area of the MAC layer.
It specifically, is this shape proposed to meet the requirement of URLLC low time delay for configured grant
Condition, for avoid as feed back not in time caused by time delay increase and packet transmission time it is too long caused by additional re-transmission cause
The congestion of channel resource, the feedback form of configured grant be set as ACK information be it is explicit, negative nack message be it is hidden
Formula, that is, when transmitting and receiving successfully, receiving end can be to transmitting terminal feeding back ACK information.
Therefore, it is had received in the preset time sent several pieces target packet to by PHY layer after receiving end
Confirmation ACK information from receiving end feedback, then remove the target packet in the buffer area of MAC layer.
This preset time can be according to the speed that specific data are transmitted, between transmitting terminal and receiving end at distance and receiving end
The reason time is determined, and can be held consultation acquisition before data are sent by transmitting terminal and receiving end.
The embodiment of the present invention provides a kind of data transmission method based on MAC layer data packet replication, is authorized based on configuration,
MAC layer replicates data packet, and partial data packet is temporarily stored in MAC layer, when waiting caused by re-transmission can be effectively reduced
Prolonging, including to high level requests data, PDCP layers of group bag data packet and again data packet to be sent to the time delay etc. of low layer, dropping
Low time delay and while improve transmission reliability, can be improved the utilization rate of frequency spectrum resource.
It is further, described that several pieces target packet is passed through into physical layer PHY layer on the basis of the above various embodiments
It is sent to receiving end, and remaining target packet is stored in after the buffer area of the MAC layer, further includes:
It does not receive in the preset time sent several pieces target packet to by PHY layer after receiving end from institute
The confirmation ACK information of receiving end feedback is stated, then chooses several pieces target packet from the buffer area of the MAC layer and passes through PHY
Layer is sent to the receiving end.
It specifically, is this shape proposed to meet the requirement of URLLC low time delay for configured grant
Condition, for avoid as feed back not in time caused by time delay increase and packet transmission time it is too long caused by additional re-transmission cause
The congestion of channel resource, the feedback form of configured grant be set as ACK information be it is explicit, negative nack message be it is hidden
Formula, that is, the feedback information that transmitting terminal does not receive receiving end in preset time regards data transmission fails as, need to be retransmitted.
Therefore, it is not received in the preset time sent several pieces target packet to by PHY layer after receiving end
Confirmation ACK information from receiving end feedback then chooses several pieces target packet from the buffer area of MAC layer and passes through PHY layer
It is sent to receiving end.
This preset time can be according to the speed that specific data are transmitted, between transmitting terminal and receiving end at distance and receiving end
The reason time is determined, and can be held consultation acquisition before data are sent by transmitting terminal and receiving end.
The embodiment of the present invention provides a kind of data transmission method based on MAC layer data packet replication, is authorized based on configuration,
MAC layer replicates data packet, and partial data packet is temporarily stored in MAC layer, when waiting caused by re-transmission can be effectively reduced
Prolonging, including to high level requests data, PDCP layers of group bag data packet and again data packet to be sent to the time delay etc. of low layer, dropping
Low time delay and while improve transmission reliability, can be improved the utilization rate of frequency spectrum resource.
On the basis of the above various embodiments, further, Packet Data Convergence Protocol PDCP layers of transmission of the acquisition
Target packet specifically includes:
The target packet of the PDCP layers of transmission is obtained by logic channel LCH.
It specifically, can before data is transmitted when data are transmitted by way of configured grant
It fulfils scheduling ahead of schedule, reserves resource block for transmission process.When there are data to be transmitted, the group of data packet is carried out by PDCP layers first
Packet, PDCP layer of this process group packet for only completing a data packet, then, the target packet after group wrapping is passed through distribution by PDCP layers
Good logic channel LCH is sent, and is obtained module by LCH and is obtained the PDCP layers of target packet sent, and by number of targets
MAC layer is sent to according to packet.
The embodiment of the present invention provides a kind of data transmission method based on MAC layer data packet replication, is authorized based on configuration,
MAC layer replicates data packet, and partial data packet is temporarily stored in MAC layer, when waiting caused by re-transmission can be effectively reduced
Prolonging, including to high level requests data, PDCP layers of group bag data packet and again data packet to be sent to the time delay etc. of low layer, dropping
Low time delay and while improve transmission reliability, can be improved the utilization rate of frequency spectrum resource.
It is further, described to send out several pieces target packet by physical PHY layer on the basis of the above various embodiments
It is sent to receiving end, is specifically included:
Several pieces target packet is carried on respectively in several transmission blocks TB, a target packet is carried on one
In TB；
After listem-before-talk LBT success, institute is sent by the PHY layer by several TB for carrying target data
State receiving end.
Specifically, send several pieces target packet to by physical PHY layer by transmission module the mistake of receiving end
Cheng Zhong, using listem-before-talk LBT technology, a possibility that LBT successfully indicates that transmission channel is unoccupied, transmission success, is bigger,
A possibility that LBT unsuccessfully indicates that transmission channel is occupied, transmission success is smaller.
Firstly, several pieces target packet is carried on respectively in several transmission blocks TB, a target packet carrying
In a TB.
Then, it after listem-before-talk LBT success, sends several TB for carrying target data to by PHY layer
Receiving end.
The embodiment of the present invention provides a kind of data transmission method based on MAC layer data packet replication, is authorized based on configuration,
MAC layer replicates data packet, and partial data packet is temporarily stored in MAC layer, when waiting caused by re-transmission can be effectively reduced
Prolonging, including to high level requests data, PDCP layers of group bag data packet and again data packet to be sent to the time delay etc. of low layer, dropping
Low time delay and while improve transmission reliability, can be improved the utilization rate of frequency spectrum resource.
Fig. 2 is the data transmission device schematic diagram provided in an embodiment of the present invention based on MAC layer data packet replication, such as Fig. 2
Shown, the embodiment of the present invention provides a kind of data transmission device based on MAC layer data packet replication, for executing any of the above-described reality
Method described in example is applied, specifically includes and obtains module 201, replication module 202 and transmission module 30, in which:
Obtain the target packet that module 201 is used to obtain PDCP layers of Packet Data Convergence Protocol transmission；Replication module 202
More parts are copied into for the target packet to be intervened control MAC layer in media；Transmission module 203 is used for several pieces target
Data packet is sent to receiving end by physical PHY layer, and remaining target packet is stored in the buffer area of the MAC layer.
It specifically, can before data is transmitted when data are transmitted by way of configured grant
It fulfils scheduling ahead of schedule, reserves resource block for transmission process.When there are data to be transmitted, the group of data packet is carried out by PDCP layers first
Packet, PDCP layer of this process group packet for only completing a data packet, then, PDCP layers send out the target packet after group wrapping
It goes, obtains the target packet of PDCP layers of transmission by obtaining module 201, and target packet is sent to MAC layer.
The target packet is copied into more parts in MAC layer by replication module 202 again.The number of duplication can be according to reality
The bearing capacity and actual needs of MAC layer, depend on the circumstances in the application of border.
Then, by transmission module 203 by from copy come more parts of target packets in, select several pieces target data
Packet is sent to receiving end by physical PHY layer, and remaining target packet is stored in the buffer area of MAC layer.To realize
The transmission of data.
The embodiment of the present invention provides a kind of data transmission device based on MAC layer data packet replication, for executing above-mentioned
One method as described in the examples, the device provided through this embodiment execute the tool of above-mentioned a certain method as described in the examples
Body step is identical as above-mentioned corresponding embodiment, and details are not described herein again.
The embodiment of the present invention provides a kind of data transmission device based on MAC layer data packet replication, is authorized based on configuration,
MAC layer replicates data packet, and partial data packet is temporarily stored in MAC layer, is reducing time delay and is improving transmission reliability
Meanwhile the utilization rate of frequency spectrum resource can be improved.
On the basis of the above embodiments, further, described device is applied in terminal or base station.
Specifically, the data transmission device based on MAC layer data packet replication can be applied in terminal, can also apply
In base station.
The embodiment of the present invention provides a kind of data transmission device based on MAC layer data packet replication, is authorized based on configuration,
MAC layer replicates data packet, and partial data packet is temporarily stored in MAC layer, is reducing time delay and is improving transmission reliability
Meanwhile the utilization rate of frequency spectrum resource can be improved.
It is described in detail below by a specific example:
In this example, primary in MAC layer duplication, i.e. K=2, data packet is sent to base station gNB by terminal UE.
When data are transmitted by way of configured grant, tune can be fulfiled ahead of schedule before data is transmitted
Degree reserves resource block for transmission process.When there are data to be transmitted, the group packet of data packet, this process are carried out by PDCP layers first
The PDCP layers of group packet for only completing a data packet, then this part of data packet passes through the LCH distributed and is sent to MAC layer.MAC layer meeting
Data packet replication is primary, then one of data packet is carried on a TB, as listem-before-talk (Listen-Before-
Talk, LBT) success is transmitted later, while another data packet is deposited in MAC layer buffer area.Negotiated according to UE and gNB
Obtain waiting feedback information specific time length, when in this section of specific time UE have received the ACK from gNB feedback,
Then MAC layer is by the data packet discarding of deposit；If during this period of time the end UE is whatever confiscated, can distribute immediately
Then the data packet of deposit is carried on this TB and transmits by TB, the waiting time delay caused by retransmitting can be effectively reduced in this,
Including to high level requests data, PDCP layers of group bag data packet and again data packet to be sent to the time delay etc. of low layer, also promoted
As more TB simultaneous transmissions and caused by the problems such as resource utilization is not high, congestion is serious.
It should be noted that the data packet number replicated via MAC layer can also be 4,8 ... ..., to guarantee transmission
The number of reliability, duplication is also determined by the data-handling capacity that MAC layer can bear simultaneously.Its main operational principle is to wait
When the feedback of preceding TB transmission, MAC layer can carry out temporary data packet before the specific time of waiting terminates again
It replicates and keeps in, when transmitting again, if retransmitted successfully, abandon this temporal data packet, otherwise continue according to the above process
Work, and so on.
Fig. 3 is the structural schematic diagram of electronic equipment provided in an embodiment of the present invention, as shown in figure 3, the equipment includes: place
Manage device 301, memory 302 and bus 303；
Wherein, processor 301 and memory 302 complete mutual communication by the bus 303；
Processor 301 is used to call the program instruction in memory 302, to execute provided by above-mentioned each method embodiment
Method, for example,
Obtain the target packet of Packet Data Convergence Protocol PDCP layers of transmission；
The target packet is intervened into control MAC layer in media and is copied into more parts；
Receiving end is sent by physical PHY layer by several pieces target packet, and remaining target packet is stored
In the buffer area of the MAC layer.
The embodiment of the present invention provides a kind of computer program product, and the computer program product is non-transient including being stored in
Computer program on computer readable storage medium, the computer program include program instruction, when described program instructs quilt
When computer executes, computer is able to carry out method provided by above-mentioned each method embodiment, for example,
Obtain the target packet of Packet Data Convergence Protocol PDCP layers of transmission；
The target packet is intervened into control MAC layer in media and is copied into more parts；
Receiving end is sent by physical PHY layer by several pieces target packet, and remaining target packet is stored
In the buffer area of the MAC layer.
The embodiment of the present invention provides a kind of non-transient computer readable storage medium, the non-transient computer readable storage
Medium storing computer instruction, the computer instruction make the computer execute side provided by above-mentioned each method embodiment
Method, for example,
Obtain the target packet of Packet Data Convergence Protocol PDCP layers of transmission；
The target packet is intervened into control MAC layer in media and is copied into more parts；
Receiving end is sent by physical PHY layer by several pieces target packet, and remaining target packet is stored
In the buffer area of the MAC layer.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can pass through
The relevant hardware of program instruction is completed, and program above-mentioned can be stored in a computer readable storage medium, the program
When being executed, step including the steps of the foregoing method embodiments is executed；And storage medium above-mentioned includes: ROM, RAM, magnetic disk or light
The various media that can store program code such as disk.
The embodiments such as device and equipment described above are only schematical, wherein described be used as separate part description
Unit may or may not be physically separated, component shown as a unit may or may not be
Physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to the actual needs
Some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying
In the case where creative labor, it can understand and implement.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment can
It realizes by means of software and necessary general hardware platform, naturally it is also possible to pass through hardware.Based on this understanding, on
Stating technical solution, substantially the part that contributes to existing technology can be embodied in the form of software products in other words, should
Computer software product may be stored in a computer readable storage medium, such as ROM/RAM, magnetic disk, CD, including several fingers
It enables and using so that a computer equipment (can be personal computer, server or the network equipment etc.) executes each implementation
Method described in certain parts of example or embodiment.
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 (9)
1. a kind of data transmission method based on MAC layer data packet replication characterized by comprising
Obtain the target packet of Packet Data Convergence Protocol PDCP layers of transmission；
The target packet is intervened into control MAC layer in media and is copied into more parts；
Receiving end is sent by physical PHY layer by several pieces target packet, and remaining target packet is stored in institute
State the buffer area of MAC layer.
2. the method according to claim 1, wherein described pass through physical layer PHY for several pieces target packet
Layer is sent to receiving end, and remaining target packet is stored in after the buffer area of the MAC layer, further includes:
It has received in the preset time sent several pieces target packet to by PHY layer after receiving end and is connect from described
The confirmation ACK information of receiving end feedback, then remove the target packet in the buffer area of the MAC layer.
3. the method according to claim 1, wherein described pass through physical layer PHY for several pieces target packet
Layer is sent to receiving end, and remaining target packet is stored in after the buffer area of the MAC layer, further includes:
It does not receive in the preset time sent several pieces target packet to by PHY layer after receiving end and is connect from described
The confirmation ACK information of receiving end feedback is then chosen several pieces target packet from the buffer area of the MAC layer and is sent out by PHY layer
It is sent to the receiving end.
4. the method according to claim 1, wherein what Packet Data Convergence Protocol PDCP layers of the acquisition was sent
Target packet specifically includes:
The target packet of the PDCP layers of transmission is obtained by logic channel LCH.
5. the method according to claim 1, wherein described pass through physical PHY layer for several pieces target packet
It is sent to receiving end, is specifically included:
Several pieces target packet is carried on respectively in several transmission blocks TB, a target packet is carried on a TB
In；
After listem-before-talk LBT success, described connect is sent by the PHY layer by several TB for carrying target data
Receiving end.
6. a kind of data transmission device based on MAC layer data packet replication characterized by comprising
Module is obtained, for obtaining the target packet of PDCP layers of Packet Data Convergence Protocol transmission；
Replication module is copied into more parts for the target packet to be intervened control MAC layer in media；
Transmission module, for sending receiving end by physical PHY layer for several pieces target packet, and by remaining number of targets
The buffer area of the MAC layer is stored according to packet.
7. device according to claim 6, which is characterized in that described device is applied in terminal or base station.
8. 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 5 any method.
9. a kind of non-transient computer readable storage medium, is stored thereon with computer program, which is characterized in that when the calculating
When machine program is executed by processor, method as claimed in claim 1 to 5 is realized.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113015246A (en) * | 2019-12-20 | 2021-06-22 | 中国移动通信有限公司研究院 | Information transmission method, device, related equipment and storage medium |
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| CN109996261B (en) | 2021-04-09 |
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