CN108631959A - Communication means, data cell and control unit - Google Patents
Communication means, data cell and control unit Download PDFInfo
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- CN108631959A CN108631959A CN201710184526.3A CN201710184526A CN108631959A CN 108631959 A CN108631959 A CN 108631959A CN 201710184526 A CN201710184526 A CN 201710184526A CN 108631959 A CN108631959 A CN 108631959A
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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
- H04L1/1809—Selective-repeat protocols
-
- 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
-
- 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
- H04L1/1806—Go-back-N protocols
-
- 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
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1854—Scheduling and prioritising arrangements
-
- 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
- H04L1/1874—Buffer management
-
- 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
- H04L1/188—Time-out mechanisms
-
- 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
- H04L1/1887—Scheduling and prioritising arrangements
Abstract
A kind of communication means of the application offer, data cell and control unit.This method includes：Data cell receives the first data packet from control unit, and the packet header of first data packet includes that the first poll indicates information.Data cell sends the second data packet to terminal device, and the packet header of second data packet includes that the first poll indicates information.Data cell receives the first data status report from terminal device；Data cell sends the second data status report to control unit.Wherein, the first data status report and the second data status report are used to the data packet that packet loss occurs for instruction.That is, the scene based on CU DU cuttings particularly provides the method for obtaining the second data status report this application provides specific data repeating method.
Description
Technical field
This application involves a kind of field of communication technology more particularly to communication means, data cell and control units.
Background technology
Wireless spread-spectrum technology (Radio Link Control, RLC) layer uses automatic repeat request (Automatic at present
Repeat Request, ARQ) mechanism carries out data transmission.Specifically, it when access network equipment determination meets polling conditions, connects
Log equipment initiates poll polling, feeds back RLC data status reports according to the polling with triggering terminal equipment.The RLC
Data status report includes：The sequence number (Sequence Number, SN) for the RLC data packets that terminal device has received and not
The SN of the RLC data packets received.Access network equipment retransmits the RLC data packets being dropped according to the RLC data status reports.And it is right
Other protocol layers in wireless communication system, such as wireless heterogeneous networks (Radio Resource Control, RRC) layer divide
Group data convergence protocol (Packet Data Convergence Protocol, PDCP) layer etc. can also use similar re-transmission
Mechanism.
Under cloud wireless access network (Cloud Radio Access Network, CRAN) framework, access network equipment is split
At two independent units of CRAN control units (Control Unit, CU) and data cell (Distributed Unit, DU),
CU is also referred to as control node or center cell.DU is also referred to as distributed unit.There are many different sides for the cutting of CU-DU
Formula.Such as：CU can be to rrc layer, PDCP layers of progress data processing.DU can be following to rlc layer and rlc layer several agreements
Layer carries out data processing.Alternatively, CU can be to rrc layer, PDCP layers and wireless spread-spectrum technology-height (Radio Link
Control-High, RLC-H) layer progress data processing.DU can (Radio Link Control- low to wireless spread-spectrum technology-
Low, RLC-L) the several protocol layers progress data processing of layer and rlc layer below.
Current retransmission mechanism proposes in the case of not having CU-DU cuttings based on access network equipment.Therefore it is based on CU-
How DU cuttings carry out the problem of data re-transmission is urgent need to resolve, and it is urgently to be resolved hurrily specifically how to obtain data status report
Problem.
Invention content
A kind of communication means of the application offer, data cell and control unit.That is, the field based on CU-DU cuttings
Scape particularly provides the method for obtaining data status report this application provides specific data repeating method.
In a first aspect, the application provides a kind of communication means, including：
Data cell receives the first data packet from control unit, and the packet header of the first data packet includes the first poll instruction letter
Breath；
Data cell sends the second data packet to terminal device, and the packet header of the second data packet includes the first poll instruction letter
Breath；
Data cell receives the first data status report from terminal device；Wherein, the first data status report is used to indicate
The data packet of packet loss occurs；
Data cell sends the second data status report to control unit；Wherein, second data status report is used for
Indicate the data packet of generation packet loss.
Based on the scene of CU-DU cuttings, this application provides specific data repeating methods, particularly provide acquisition first
The method of data status report.
Optionally, further include：Data cell receives the precedence information of the first data packet from control unit；
Correspondingly, data cell sends the second data packet to terminal device, including：
Data cell preferentially sends the second data packet to terminal device.
Since data cell preferentially can send the second data packet to terminal device so that control unit can obtain faster
The second data status report is got, to improve data packet retransmission efficiency.
Optionally, further include：Data cell receives third information from control unit, and third information is used to indicate and need to retransmit
Data packet.
Optionally, further include：Data cell receives the precedence information for the data packet that need to be retransmitted from control unit.
In the application, the priority that data cell can send the data packet that need to be retransmitted according to the priority of data packet is believed
Breath, to improve data packet retransmission efficiency.
Second aspect, the application provide a kind of communication means, including：
Data cell receives the first data packet from control unit；
If meeting polling conditions, data cell generates the second data packet；The packet header of second data packet includes the first poll
Indicate information；
Data cell sends the second data packet to terminal device；
Data cell receives the first data status report from terminal device；Wherein, the first data status report is used to indicate
The data packet of packet loss occurs；
Data cell sends the second data status report to control unit；Wherein, the second data status report is used to indicate
The data packet of packet loss occurs.
Based on the scene of CU-DU cuttings, this application provides specific data repeating methods, particularly provide acquisition first
The method of data status report.
Optionally, polling conditions are：
The quantity of the accumulative data packet sent of data cell meets first condition；Alternatively,
The size of the accumulative data packet sent of data cell meets second condition；Alternatively,
The time that data cell adds up transmission data packet meets third condition；Alternatively,
The caching of data cell free time meets fourth condition；Alternatively,
Second data packet is the last one data packet to be sent in the data cell；Alternatively,
The poll timer time-out of data cell.
Optionally, further include：Data cell receives the first information from control unit, and the first information, which is used to indicate, meets poll
Condition.
Optionally, polling conditions are：
The quantity of the accumulative data packet sent of control unit meets first condition；Alternatively,
The size of the accumulative data packet sent of control unit meets second condition；Alternatively,
The time that control unit adds up transmission data packet meets third condition；Alternatively,
The caching of control unit free time meets fourth condition；Alternatively,
First data packet is the last one data packet to be sent in described control unit；Alternatively,
The poll timer time-out of control unit.
Optionally, further include：Data cell receives the second information from control unit, and the second information is used to indicate stopping and sends
First poll indicates information.
Information is indicated to prevent data cell from sending unnecessary first poll, to save data cell expense.
Optionally, further include：Data cell receives third information from control unit, and third information is used to indicate and need to retransmit
Data packet.
Optionally, further include：Data cell stops sending the first poll instruction information.
Optionally, further include：Data cell receives the precedence information for the data packet that need to be retransmitted from control unit.
In the application, the priority that data cell can send the data packet that need to be retransmitted according to the priority of data packet is believed
Breath, to improve data packet retransmission efficiency.
Optionally, further include：When data cell does not receive four information of control unit transmission, data cell is to control
Unit processed sends the 5th information；4th information is used to indicate control unit and receives the second data status report；5th information is used for
It asks control unit to delete the link between data cell and control unit, and establishes the chain between another data cell
Road.To improve data transmission efficiency.
Optionally, further include：The 6th information that data cell reception control unit is sent；6th information is used to indicate control
The data packet that unit abandons.
Optionally, further include：Data cell sends the 7th information to control unit；7th information is used to indicate data cell
The data packet of discarding.
By above two mode to reduce data congestion situation.
Optionally, further include：Data cell receives third data packet from terminal device, and third data packet includes：Second wheel
Ask instruction information；
Data cell sends the 4th data packet to control unit, and the 4th data packet includes：Second poll indicates information；
Data cell receives third data status report from control unit；Wherein, third data status report is used to indicate
The data packet of packet loss occurs；
Data cell sends the 4th data status report to terminal device；Wherein, the 4th data status report is used to indicate
The data packet of packet loss occurs.
Optionally, further include：Data cell sends the 8th information to described control unit, and the 8th information is used to indicate
Data packet to be segmented；
Data cell receives the data packet after segmentation from control unit.
Optionally, further include：Data cell reception control unit sends the 9th information, and the 9th information is used to indicate the 4th number
According to state report；
Data cell sends the tenth information to control unit, and the tenth information is used to indicate data packet to be segmented；
Data packet after the segmentation that data cell reception control unit is sent.
By the optional mode of above-mentioned two, it can prevent the second data status report from being cut, to improve data transmission
Reliability.
Communication means is introduced from control unit side below, implementing principle and technical effect are similar, and details are not described herein again.
The third aspect, the application provide a kind of communication means, including：If meeting polling conditions, control unit is to data
Unit sends the first data packet, and the packet header of the first data packet includes that the first poll indicates information；
Control unit receives the second data status report from data cell；Wherein, the second data status report is used to indicate
The data packet of packet loss occurs.
Optionally, polling conditions are：
The quantity of the accumulative data packet sent of control unit meets first condition；Alternatively,
The size of the accumulative data packet sent of control unit meets second condition；Alternatively,
The time that control unit adds up transmission data packet meets third condition；Alternatively,
The caching of control unit free time meets fourth condition；Alternatively,
First data packet is the last one data packet to be sent in described control unit；Alternatively,
The poll timer time-out of control unit.
Optionally, further include：Control unit sends the precedence information of first data packet to the data cell；
Fourth aspect, the application provide a kind of communication means, including：
Control unit sends the first data packet to data cell；
Control unit receives the first data status report from data cell；Wherein, the first data status report is used to indicate
The data packet of packet loss occurs.
Optionally, further include：Control unit sends the first information to data cell, and the first information, which is used to indicate, meets poll
Condition.
Optionally, further include：Control unit sends the second information to data cell, and the second information is used to indicate stopping and sends
First poll indicates information.
Optionally, further include：Control unit sends the 4th information to data cell, and the 4th information is used to indicate control unit
Receive the second data status report.
Optionally, further include：Control unit sends the 5th information to data cell；5th information is for asking the control
Link between data cell and control unit described in element deletion, and establish the link between another data cell.
Optionally, further include：Control unit sends third information to data cell, and third information is used to indicate and need to retransmit
Data packet.
Optionally, further include：Control unit sends the precedence information for the data packet that need to be retransmitted to data cell.
Optionally, further include：Control unit sends the 6th information to data cell；6th information is used to indicate the control
The data packet that unit abandons.
Optionally, further include：Control unit receives the 7th information that data cell is sent；7th information is used to indicate described
The data packet that data cell abandons.
Optionally, further include：Control unit receives the 4th data packet from data cell, and the 4th data packet includes：Described
Two polls indicate information；
Control unit sends the second data status report to data cell.
Optionally, further include：Control unit receives the 8th information from data cell, and the 8th information is used to indicate to be segmented
Data packet；
Control unit is segmented data packet according to the 8th information；
Control unit sends the data packet after segmentation to data cell.
Optionally, further include：Control unit sends the 9th information to data cell, and the 9th information is used to indicate the 4th data
State report；
Control unit receives the tenth information that data cell is sent, and the tenth information is used to indicate data packet to be segmented；
Control unit is segmented data packet according to the tenth information；
Control unit sends the data packet after segmentation to data cell.
Data cell is explained below, which can be used for executing first aspect and first aspect is corresponding optional
Mode, implementing principle and technical effect are similar, and details are not described herein again.
5th aspect, the application provide a kind of data cell, including：
Receiving module, for receiving the first data packet from control unit, the packet header of first data packet includes the first round
Ask instruction information；
Sending module, for sending the second data packet to terminal device, the packet header of the second data packet refers to including the first poll
Show information；
Receiving module is additionally operable to receive the first data status report from terminal device；Wherein, the first data status report is used
The data packet of packet loss occurs in instruction；
Sending module is additionally operable to send the second data status report to control unit；Wherein, the second data status report is used
The data packet of packet loss occurs in instruction.
Optionally, further include：Receiving module is additionally operable to receive the precedence information of the first data packet from control unit；
Correspondingly, sending module is specifically used for：Preferentially the second data packet is sent to terminal device.
Optionally, receiving module is additionally operable to receive third information from control unit, and third information is used to indicate and need to retransmit
Data packet.
Optionally, receiving module is additionally operable to receive the precedence information for the data packet that need to be retransmitted from control unit.
Data cell is explained below, which can be used for executing second aspect and second aspect is corresponding optional
Mode, implementing principle and technical effect are similar, and details are not described herein again.
6th aspect, the application provide a kind of data cell, including：
Receiving module, for receiving the first data packet from control unit；
If generation module generates the second data packet for meeting polling conditions；The packet header of second data packet includes first
Poll indicates information；
Sending module, for sending the second data packet to terminal device；
Receiving module is additionally operable to receive the first data status report from terminal device；Wherein, the first data status report is used
The data packet of packet loss occurs in instruction；
Sending module is additionally operable to send the second data status report to control unit；Wherein, the second data status report is used
The data packet of packet loss occurs in instruction.
Optionally, polling conditions are：
The quantity of the accumulative data packet sent of data cell meets first condition；Alternatively,
The size of the accumulative data packet sent of data cell meets second condition；Alternatively,
The time that data cell adds up transmission data packet meets third condition；Alternatively,
The caching of data cell free time meets fourth condition；Alternatively,
Second data packet is the last one data packet to be sent in data cell；Alternatively,
The poll timer time-out of data cell.
Optionally, receiving module is additionally operable to receive the first information from described control unit, and the first information is used to indicate satisfaction
The polling conditions.
Optionally, polling conditions are：
The quantity of the accumulative data packet sent of control unit meets first condition；Alternatively,
The size of the accumulative data packet sent of control unit meets second condition；Alternatively,
The time that control unit adds up transmission data packet meets third condition；Alternatively,
The caching of control unit free time meets fourth condition；Alternatively,
First data packet the last one data packet to be sent on unit in order to control；Alternatively,
The poll timer time-out of control unit.
Optionally, receiving module is additionally operable to receive the second information from control unit, and the second information is used to indicate stopping and sends
First poll indicates information.
Optionally, receiving module is additionally operable to receive third information from control unit, and third information is used to indicate and need to retransmit
Data packet.
Optionally, sending module is additionally operable to stop sending the first poll instruction information.
Optionally, receiving module is additionally operable to receive the precedence information for the data packet that need to be retransmitted from control unit.
Optionally, sending module is additionally operable to when receiving module does not receive four information of control unit transmission, to control
Unit processed sends the 5th information；4th information is used to indicate control unit and receives the second data status report；5th information is used for
It asks control unit to delete the link between data cell and control unit, and establishes the chain between another data cell
Road.
Optionally, receiving module is additionally operable to the 6th information of reception control unit transmission；6th information is used to indicate control
The data packet that unit abandons.
Optionally, sending module is additionally operable to send the 7th information to control unit；7th information is used to indicate data cell
The data packet of discarding.
Optionally, receiving module is additionally operable to receive third data packet from terminal device, and third data packet includes：Second wheel
Ask instruction information；
Sending module is additionally operable to send the 4th data packet to control unit, and the 4th data packet includes：Second poll instruction letter
Breath；
Receiving module is additionally operable to receive the second data status report from control unit；
Sending module is additionally operable to send second data status report to terminal device.
Optionally, sending module is additionally operable to send the 8th information to control unit, and the 8th information is used to indicate to be segmented
Data packet；
Receiving module is additionally operable to receive the data packet after segmentation from control unit.
Optionally, receiving module is additionally operable to reception control unit and sends the 9th information, and the 9th information is used to indicate the 4th number
According to state report；
Sending module is additionally operable to send the tenth information to control unit, and the tenth information is used to indicate data packet to be segmented；
Receiving module, the data packet being additionally operable to after the segmentation of reception control unit transmission.
Control unit is explained below, which can be used for executing the third aspect and the third aspect is corresponding optional
Mode, implementing principle and technical effect are similar, and details are not described herein again.
7th aspect, the application provide a kind of control unit, including：
If sending module sends the first data packet, the packet of the first data packet for meeting polling conditions to data cell
Head includes that the first poll indicates information；
Receiving module, for receiving the second data status report from data cell；Wherein, the second data status report is used for
Indicate the data packet of generation packet loss.
Optionally, polling conditions are：
The quantity of the accumulative data packet sent of control unit meets first condition；Alternatively,
The size of the accumulative data packet sent of control unit meets second condition；Alternatively,
The time that control unit adds up transmission data packet meets third condition；Alternatively,
The caching of control unit free time meets fourth condition；Alternatively,
First data packet is the last one data packet to be sent in described control unit；Alternatively,
The poll timer time-out of control unit.
Optionally, sending module is additionally operable to send the precedence information of the first data packet to data cell；
Control unit is explained below, which can be used for executing fourth aspect and fourth aspect is corresponding optional
Mode, implementing principle and technical effect are similar, and details are not described herein again.
Eighth aspect, the application provide a kind of control unit, including：
Sending module, for sending the first data packet to data cell；
Receiving module, for receiving the second data status report from data cell；Wherein, the second data status report is used for
Indicate the data packet of generation packet loss.
Optionally, sending module is additionally operable to send the first information to data cell, and the first information, which is used to indicate, meets poll
Condition.
Optionally, sending module is additionally operable to send the second information to data cell, and the second information is used to indicate stopping and sends
First poll indicates information.
Optionally, sending module is additionally operable to send the 4th information to data cell, and the 4th information is used to indicate control unit
Receive the first data status report.
Optionally, sending module is additionally operable to send the 5th information to data cell；5th information is for asking control unit
The link between data cell and control unit is deleted, and establishes the link between another data cell.
Optionally, sending module is additionally operable to send third information to data cell, and third information is used to indicate and need to retransmit
Data packet.
Optionally, sending module is additionally operable to send the precedence information for the data packet that need to be retransmitted to data cell.
Optionally, sending module is additionally operable to send the 6th information to data cell；6th information is used to indicate control unit
The data packet of discarding.
Optionally, receiving module is additionally operable to receive the 7th information that data cell is sent；7th information is used to indicate data
The data packet that unit abandons.
Optionally, receiving module is additionally operable to receive the 4th data packet from data cell, and the 4th data packet includes：Second wheel
Ask instruction information；
Sending module is additionally operable to send the second data status report to data cell.
Optionally, further include：Segmentation module；
Receiving module is additionally operable to receive the 8th information from data cell, and the 8th information is used to indicate data packet to be segmented；
Segmentation module, for being segmented to data packet according to the 8th information；
Sending module is additionally operable to send the data packet after segmentation to data cell.
Optionally, further include：Segmentation module；
Sending module is additionally operable to send the 9th information to data cell, and the 9th information is used to indicate the 4th data shape
State is reported；
Receiving module is additionally operable to receive the tenth information that data cell is sent, and the tenth information is used to indicate number to be segmented
According to packet；
Segmentation module, for being segmented to data packet according to the tenth information；
Sending module is additionally operable to send the data packet after segmentation to data cell.
9th aspect, the embodiment of the present application provides a kind of computer storage media, for being stored as above-mentioned data cell
Computer software instructions used, it includes for executing the program designed by above-mentioned first aspect.
Tenth aspect, the embodiment of the present application provides a kind of computer storage media, for being stored as above-mentioned data cell
Computer software instructions used, it includes for executing the program designed by above-mentioned second aspect.
Tenth on the one hand, and the embodiment of the present application provides a kind of computer storage media, for being stored as above-mentioned control list
Computer software instructions used in member, it includes for executing the program designed by the above-mentioned third aspect.
12nd aspect, the embodiment of the present application provides a kind of computer storage media, for being stored as above-mentioned control list
Computer software instructions used in member, it includes for executing the program designed by above-mentioned fourth aspect.
13rd aspect, the embodiment of the present application provide a kind of computer program product, and it includes instructions, when the computer
When program is executed by a computer, which makes computer execute data cell in above-mentioned first aspect and optional method and be held
Capable function.
Fourteenth aspect, the embodiment of the present application provide a kind of computer program product, and it includes instructions, when the computer
When program is executed by a computer, which makes computer execute data cell in above-mentioned second aspect and optional method and be held
Capable function.
15th aspect, the embodiment of the present application provide a kind of computer program product, and it includes instructions, when the computer
When program is executed by a computer, which makes computer execute control unit in the above-mentioned third aspect and optional method and be held
Capable function.
16th aspect, the embodiment of the present application provide a kind of computer program product, and it includes instructions, when the computer
When program is executed by a computer, which makes computer execute control unit in above-mentioned fourth aspect and optional method and be held
Capable function.
A kind of communication means of the application offer, data cell and control unit.Including：Data cell is received from control unit
The packet header of first data packet, first data packet includes that the first poll indicates information.Data cell sends second to terminal device
The packet header of data packet, second data packet includes that the first poll indicates information.Data cell receives the first data from terminal device
State report；Data cell sends the second data status report to control unit.Wherein, the first data status report and the second number
It is used to the data packet that packet loss occurs for instruction according to state report.That is, the scene based on CU-DU cuttings, the application provides
Specific data repeating method particularly provides the method for obtaining second data status report.
Description of the drawings
Fig. 1 is the CU-DU slit mode schematic diagrames that one embodiment of the application provides；
Fig. 2A is CU the and DU connection diagrams that one embodiment of the application provides；
Fig. 2 B are CU the and DU connection diagrams that another embodiment of the application provides；
Fig. 3 is a kind of interaction diagrams for communication means that the embodiment of the present application one provides；
Fig. 4 is the form schematic diagram for the data packet that one embodiment of the application provides；
Fig. 5 is a kind of interaction diagrams for communication means that the embodiment of the present application two provides；
Fig. 6 is a kind of interaction diagrams for communication means that the embodiment of the present application three provides；
Fig. 7 is a kind of structural schematic diagram of data cell provided by the present application；
Fig. 8 is a kind of structural schematic diagram of data cell provided by the present application；
Fig. 9 is a kind of structural schematic diagram of control unit provided by the present application；
Figure 10 is a kind of structural schematic diagram of control unit provided by the present application；
Figure 11 is a kind of structural schematic diagram of control unit provided by the present application；
Figure 12 is a kind of structural schematic diagram of data cell provided by the present application；
Figure 13 is a kind of structural schematic diagram of data cell provided by the present application；
Figure 14 is a kind of structural schematic diagram of control unit provided by the present application；
Figure 15 is a kind of structural schematic diagram of control unit provided by the present application；
Figure 16 is a kind of structural schematic diagram of control unit provided by the present application.
Specific implementation mode
Before introducing technical scheme, pair it will describe in detail below with the relevant rudimentary knowledge of technical solution.
Specifically, Fig. 1 is the CU-DU slit mode schematic diagrames that one embodiment of the application provides, as shown in Figure 1.Cloud is wireless
Access net CRAN frameworks under, CU-DU slit modes 1 be CU can to rrc layer carry out data processing, DU can to PDCP layers and
PDCP layers of following rlc layer (may include RLC-H layers and RLC-L layers), media access control (Media Access
Control, MAC) layer (may include MAC-H layers and MAC-L layers), physical layer (Physical Layer, PHY) (may include
PHY-H layers and PHY-L layers) and radio frequency (Radio Frequency, RF) progress data processing.CU-DU slit modes 2 are that CU can
With to rrc layer, PDCP layers of progress data processing, DU can carry out at data the several protocol layers of rlc layer and rlc layer below
Reason.CU-DU slit modes 3 are that CU can be to rrc layer, PDCP layers and RLC-H layers of progress data processing, and DU can be to RLC-L
The several protocol layers of layer and rlc layer below carry out data processing.CU-DU slit modes 4 be CU can to rrc layer, PDCP layers
And rlc layer carries out data processing, several protocol layers progress data processing that DU can be following to MAC layer and MAC layer.CU-
DU slit modes 5 are that CU can be to rrc layer, PDCP layers, rlc layer and MAC-H layers of progress data processing, and DU can be to MAC-L
The several protocol layers of layer and MAC layer below carry out data processing.CU-DU slit modes 6 be CU can to rrc layer, PDCP layers,
Rlc layer and MAC layer carry out data processing, and DU can be to PHY layer and RF layers of progress data processing.CU-DU slit modes 7 are
CU can be to rrc layer, PDCP layers, rlc layer, MAC layer and PHY-H layers of progress data processing, and DU can be to PHY-L layers and RF
Layer carries out data processing.CU-DU slit modes 8, which are CU, to carry out rrc layer, PDCP layers, rlc layer, MAC layer and PHY layer
Data processing, DU can be to RF layers of progress data processings.Above-mentioned CU-DU cuttings are carried out both for access network equipment.It should
CU-DU cuttings are also applied in terminal device.
Based on different CU-DU slit modes, the function of CU is also not quite similar.Similarly, based on different CU-DU cuttings
The function of mode, DU is also not quite similar.It is specific as follows：
CU functions：Specific all agreement layer functions of existing access network equipment or area protocol layer function.Such as：CU has
There are RRC functions or part RRC functions.Or there is rrc layer and PDCP layer functions.Or with rrc layer and PDCP and portion
Divide RLC functions.Or the function with rrc layer, PDCP layers and MAC layer or even some or all of PHY layer.Certain CU-DU's
Slit mode is not limited to above-mentioned several ways, therefore CU functions are also not necessarily limited to this.
DU functions：All or part of agreement layer function with existing access network equipment.Such as：With rrc layer, PDCP
The area protocol layer function of layer, rlc layer, MAC layer and PHY layer.Alternatively, with PDCP layers, rlc layer, the work(such as MAC layer and PHY layer
Energy.Either have the function of rlc layer, MAC layer and PHY layer etc. or comprising the partial function with rlc layer, MAC layer and PHY layer.
Or all or part of function with PHY layer.
Fig. 2A is CU the and DU connection diagrams that one embodiment of the application provides, as shown in Figure 2 A, the connection shape of CU and DU
State is single connection state.Fig. 2 B are CU the and DU connection diagrams that another embodiment of the application provides, as shown in Figure 2 B, CU and DU
Connection status be dual link state.It should be noted that Fig. 2A and Fig. 2 B illustrate only part protocol layer.Here merely to
Illustrate the connection status of CU and DU.
CU and DU provided by the present application can be two independent physical equipments or two independent logical nes.Example
Such as：CU can be major station, small station, veneer either network interface card etc.；Likewise, DU can also be major station, small station, veneer either net
Card etc..The embodiment of the present application is without limitation.Wired connection is realized by optical cable or optical fiber etc. between CU and DU.Wherein CU
Interface between DU is properly termed as Icu-du.
Access network equipment involved in the application can be global system for mobile telecommunications (Global System of Mobile
Communication, abbreviation GSM) or CDMA (Code Division Multiple Access, abbreviation CDMA) in
Can also be wideband code division multiple access (Wideband Code in base station (Base Transceiver Station, abbreviation BTS)
Division Multiple Access, abbreviation WCDMA) in base station (NodeB, abbreviation NB), can also be in LTE network
Evolved base station (evolved NodeB, abbreviation eNB), access point (access point, AP) or relay station can also be
Base station etc. in 5G networks or NR, is not limited thereto.
In addition, the terminal device involved in the application can refer to providing a user setting for voice and/or data connectivity
It is standby, there is the portable equipment of wireless connecting function or be connected to other processing equipments of radio modem.The terminal is set
It is standby to be communicated at least one core net through wireless access network (Radio Access Network, RAN).The terminal is set
Standby can be mobile terminal, such as mobile phone (or being " honeycomb " phone) and the computer with mobile terminal, for example, can be with
It is portable, pocket, hand-held, built-in computer or vehicle-mounted mobile device, they exchange language with wireless access network
Sound and/or data.Terminal device is referred to as subscriber unit (Subscriber Unit), subscriber station (Subscriber
Station), movement station (Mobile Station), mobile station (Mobile Station), distant station (Remote
Station), access point (Access Point), remote terminal (Remote Terminal), access terminal (Access
Terminal), user terminal (User Terminal), user agent (User Agent) or user equipment (User
Equipment), it is not limited thereto.
The problem of data re-transmission is urgent need to resolve how is carried out based on CU-DU cuttings, specifically how obtains data mode
Report is a problem to be solved.In order to solve technical problem of the existing technology, based on above-mentioned rudimentary knowledge, the application
A kind of communication means, data cell and control unit are provided.
Specifically, the technical solution of the application can not only be applied and cloud wireless access network (Cloud Radio Access
Network, CRAN) communication network, the various forms of systems for including the separation of access network equipment partial function can also be applied to,
As forth generation mobile communication system (4Generation, 4G) evolution system, long term evolution (Long Term Evolution,
LTE) system, the 5th Generation Mobile Communication System (5Generation, 5G).In LTE system, there are baseband modules and radio frequency
Module separation scene, i.e., scene, dual link (Dula Connectivity, DC) scene of remote radio, big little yard scape,
Long term evolution polymerize (Long Term Evolution Wireless Fidelity with long term evolution with Wireless Fidelity
Aggregarion, LWA) scene；There are various non-boundary cell non-cell scenes, virtualization scene, differences in 5G systems
The range that system/standard coexistence scenario is all applicable in the application.
Embodiment one
Fig. 3 is a kind of interaction diagrams for communication means that the embodiment of the present application one provides, as shown in figure 3, this method packet
Include following flow：
Step S301：Data cell receives the first data packet from control unit, and the packet header of first data packet includes first
Poll indicates information.
Specifically, if control unit determines that present data transmission state meets polling conditions, control unit generation includes
First poll indicates the first data packet of information, and the first data packet is sent to data cell.Polling conditions obtain for poll
The condition of second data status report.First poll instruction information, which is used to indicate, obtains the second data status report.Control unit
Can be to ask instruction information the first round fixed position is arranged in the first data packet.The position can be filled with 0 or 1.When this
When position is filled with 0, then it represents that data packet does not carry the first poll instruction information, i.e. the data packet is general data packet.When this
When position is filled with 1, then it represents that data packet has carried the first poll instruction information, i.e. the data packet is the first data packet.Such as：
When control unit and data cell negotiate to determine that first bit position of packet header is 1, indicate that the data packet is first
Data packet.And when negotiating to determine that first bit position of packet header is 0, indicate that the data packet is general data packet.
When data cell receives a data packet and identifies that first bit position is 1, indicate that the data packet is the first data
Packet.Alternatively, when the position is filled with 1, then it represents that data packet does not carry the first poll instruction information, i.e. the data packet is common
Data packet.When the position is filled with 0, then it represents that data packet has carried the first poll instruction information, i.e. the data packet is first
Data packet.The application is without limitation.Certainly, the length of the first poll instruction information corresponding position is not limited to 1 bit, may be used also
To be 2 to compare top grade.The application is without limitation.
Step S302：Data cell sends the second data packet to terminal device, and the packet header of second data packet includes first
Poll indicates information.
Second data packet may include the first data packet.Such as：When the first data packet is PDCP data packets, the second data
Packet can be to add the RLC data packets that information obtains to PDCP data packets.
Alternatively, the first data packet can also include the second data packet.Such as：Assuming that the second data packet only includes：With first
The identical sequence number of data packet (Sequence Number, SN) and the first poll indicate information.
Alternatively, the first data packet and the second data packet only have the first poll instruction information identical, other information is different from.
And second data packet may be data cell determine that present data transmission state meets polling conditions after, send earliest one
Data packet.The case where either the case where being sent according to data packet and/or MAC dispatch, one data packet addition of arbitrary selection the
One poll indicates information as the second data packet, and queued for transmission (is potentially based on scheduling result segmentation), finally by this second
Data packet is sent to terminal device.Alternatively, data cell can be sent according to MAC dispatch situations and/or current group packet situation
Second data packet.Data cell can be by second data packet group at individual transmission block (Transmission Block, TB)
It is preferential to send, a packet can also be arbitrarily looked for, in the packet header of data packet when setting up data packet (Packet Data Unit, PDU)
The first poll of middle addition indicates information.
To sum up, the relationship of the first data packet of the application couple and the second data packet is not limited, as long as the first data packet and
Two data packets all include that the first poll indicates information.And data cell sends the purpose of the second data packet to terminal device
It is：First poll instruction information is sent to terminal device.
It should be noted that when the application uses above-mentioned CU-DU slit modes 1, which is RRC data
Packet.Second data packet is PDCP data packets.When the application uses above-mentioned CU-DU slit modes 2, which is PDCP
Data packet.Second data packet is RLC data packets.When the application uses above-mentioned CU-DU slit modes 3, which is
RLC SDU data packets.Second data packet is RLC PDU data packets.When the application uses above-mentioned CU-DU slit modes 4, this
One data packet is RLC data packets.Second data packet is MAC data packet.It, should when the application uses above-mentioned CU-DU slit modes 5
First data packet is MAC SDU data packets.Second data packet is MAC PDU data packets.When the application uses above-mentioned CU-DU cuttings
When mode 6, which is MAC SDU data packets.Second data packet is PHY data packets.When the application uses above-mentioned CU-
DU slit modes 7 and when 8, the data cell being related to is physical layer or the relevant data cell of radio frequency unit.
Step S303：Data cell receives the first data status report from terminal device；Wherein, the first data status report
It is used to indicate the data packet that packet loss occurs.
Step S304：Data cell sends the second data status report to control unit.
It is illustrated in conjunction with step S303 and step S304：The first poll that terminal device receives data cell transmission refers to
After showing information, terminal device sends the first data status report to data cell.Data cell sends second to terminal device
Data packet.Wherein the second data status report can be identical as the first data status report.Alternatively, the second data status report can
To be the transformed data status report to the first data status report.Wherein second data status report includes：Terminal
The mark of the data packet of packet loss occurs for the mark and/or terminal device for the data packet that equipment has been received.When the second data shape
State is reported：When the mark of the data packet of packet loss occurs, alternatively, when the second data status report includes：Terminal device is
When the mark of the mark of the data packet received and the data packet of generation packet loss, control unit, which can be determined directly, occurs packet loss
Data packet.When the second data status report includes：When the mark for the data packet that terminal device receives, control unit is according to sending out
The mark of data packet and the mark of the data packet that receives of terminal device determine the mark of the data packet that packet loss occurs.The number
Mark according to packet can be the SN of data packet.Can certainly be the other identifier of data packet, as long as the mark can be marked uniquely
Know data packet.
The embodiment of the present application provides a kind of communication means, and this method includes：Data cell receives the first number from control unit
According to packet, data cell sends the second data packet to terminal device.The wherein packet header in the packet header of the first data packet and the second data packet
Include that the first poll indicates information.Data cell receives the first data status report from terminal device；Data cell is to control
Unit sends the second data status report.Wherein, the first data status report and the second data status report are used to instruction hair
The data packet of raw packet loss.That is, the scene based on CU-DU cuttings, this application provides specific data repeating methods, especially
It provides the method for obtaining the second data status report.
Optionally, the polling conditions are：The quantity of the accumulative data packet sent of control unit meets first condition.
Alternatively,
The size of the accumulative data packet sent of control unit meets second condition.
Alternatively,
The time that control unit adds up transmission data packet meets third condition.
Alternatively,
The caching of control unit free time meets fourth condition.
Alternatively,
First data packet the last one data packet to be sent on unit in order to control.
Alternatively,
The poll timer time-out of control unit.
Specifically, the first condition can be that the quantity of the accumulative data packet sent of control unit reaches the first default threshold
Value.The second condition can be that the size of the accumulative data packet sent of control unit reaches the second predetermined threshold value.The third
Condition can the time of the accumulative transmission data packet of control unit reach third predetermined threshold value.Fourth condition can be control unit
The ratio of free buffer size and total cache size be less than the 4th predetermined threshold value or the caching of occupancy of control unit is big
The small ratio with total cache size is more than or equal to the 5th predetermined threshold value.It is wherein above-mentioned the first predetermined threshold value, second default
Threshold value, third predetermined threshold value, the 4th predetermined threshold value and the 5th predetermined threshold value can be arranged according to actual conditions.The embodiment of the present application
It is without limitation.
A kind of optional mode, the communication means further include：Data cell receives the excellent of the first data packet from control unit
First grade information.Correspondingly, data cell sends the second data packet to terminal device, including：Data cell is preferentially to terminal device
Send the second data packet.
Specifically, the data packet that control unit is sent is divided into two kinds of situations：The first is the first data packet, that is, includes first
Poll indicates the data packet of information.Second is general data packet, i.e., does not include the data packet of the first poll instruction information.Control
Priority of the priority higher than general data packet of the first data packet can be arranged in unit.So that data cell is preferentially set to terminal
Preparation send the second data packet.
The precedence information can be an information being filled in idle domain on the basis of existing data packet.Also may be used
With by least one of data packet field expand, to indicate the priority of data packet.Such as：Fig. 4 is that the application one is real
The form schematic diagram of the data packet of example offer is applied, as shown in figure 4, the application is by defining different PDU types, with designation date
The priority of packet.Wherein can be using the 4-15 bits of PDU types as extension bits, i.e. 4-15 bits can indicate priority
Information.
Another optional mode, data cell do not receive the precedence information of the first data packet from control unit.This feelings
Under condition, data cell can preferentially send the second data packet for carrying the first poll instruction information.
In the application, since data cell preferentially can send the second data packet to terminal device so that control unit can
To get the second data status report faster, to improve data packet retransmission efficiency.
Embodiment two
Fig. 5 is a kind of interaction diagrams for communication means that the embodiment of the present application two provides, as shown in figure 5, this method packet
Include following flow：
Step S501：Data cell receives the first data packet from control unit.
Step S502：If meeting polling conditions, data cell generates the second data packet；The packet header of second data packet includes
First poll indicates information.
It is illustrated in conjunction with step S501 and step S502：If the polling conditions that meet refer to if current data passes
Defeated state meets polling conditions, and polling conditions are the condition that poll obtains the second data status report.First poll indicates information
It is used to indicate and obtains the second data status report.Data cell can be to ask instruction information the first round in the second data packet to be arranged
Fixed position.The position can be filled with 0 or 1.When the position is filled with 0, terminal device determination need not send first
Data status report.When the position is filled with 1, terminal device determination needs to send the first data status report.Alternatively, when should
When position is filled with 1, terminal device determination need not send the first data status report.When the position is filled with 0, terminal device
It determines and needs to send the first data status report.The application is without limitation.Certainly, the first poll indicates information corresponding position
Length be not limited to 1 bit, can also be that 2 compare top grade.The application is without limitation.
Second data packet may include the first data packet.Such as：When the first data packet is PDCP data packets, the second data
Packet can be to add the RLC data packets that information obtains to PDCP data packets.
Alternatively, the first data packet can also include the second data packet.Such as：Assuming that the second data packet only includes：With first
The identical SN of data packet.
Alternatively, second data packet may be data cell determine that present data transmission state meets polling conditions after, most
The data packet early sent.The case where the case where either being sent according to data packet and/or scheduling, arbitrarily select a data
Packet addition the first poll instruction information is sent to terminal device as the second data packet, and by second data packet.Such as：Data
Unit can send the second data packet according to MAC dispatch situations or current group packet situation.
To sum up, the relationship of the first data packet of the application couple and the second data packet is not limited, and data cell is set to terminal
The purpose that preparation send the second data packet is：First poll instruction information is sent to terminal device.
It should be noted that when the application uses above-mentioned CU-DU slit modes 1, which is RRC data
Packet.Second data packet is PDCP data packets.When the application uses above-mentioned CU-DU slit modes 2, which is PDCP
Data packet.Second data packet is RLC data packets.When the application uses above-mentioned CU-DU slit modes 3, which is
RLC SDU data packets.Second data packet is RLC PDU data packets.When the application uses above-mentioned CU-DU slit modes 4, this
One data packet is RLC data packets.Second data packet is MAC data packet.It, should when the application uses above-mentioned CU-DU slit modes 5
First data packet is MAC SDU data packets.Second data packet is MAC PDU data packets.When the application uses above-mentioned CU-DU cuttings
When mode 6, which is MAC SDU data packets.Second data packet is PHY data packets.When the application uses above-mentioned CU-
When DU slit modes 7, which is PHY SDU data packets.Second data packet is PHY PDU data packets.Work as the application
When using above-mentioned CU-DU slit modes 8, which is PHY data packets.Second data packet is PHY PDU data packets.
It is noted that the first data packet in embodiment two in the optional mode of embodiment one and embodiment one
The first data packet it is different.In embodiment two, the first data packet is a general data packet, which does not carry first
Poll indicates information.And the second data packet in embodiment two and second in the optional mode of embodiment one and embodiment one
Data packet is identical, is required for meeting two conditions：First, which is the data that data cell is sent to terminal device
Packet.Second, the packet header of second data packet includes that the first poll indicates information.
Step S503：Data cell sends the second data packet to terminal device.
Step S504：Data cell receives the first data status report from terminal device；Wherein, the first data status report
It is used to indicate the data packet that packet loss occurs.
Step S505：Data cell sends the second data status report to control unit；Wherein, the second data status report
It is used to indicate the data packet that packet loss occurs.
It is illustrated in conjunction with step S504 and step S505：The first poll that terminal device receives data cell transmission refers to
After showing information, terminal device sends the first data status report to data cell.Data cell sends second to control unit
Data status report.Wherein second data status report includes：The mark for the data packet that terminal device has been received and/or
The mark of the data packet of packet loss occurs for terminal device.When the second data status report includes：The mark of the data packet of packet loss occurs
When, alternatively, when the second data status report includes：The mark for the data packet that terminal device has been received and the number that packet loss occurs
According to packet mark when, control unit can directly determine occur packet loss data packet.When the second data status report includes：Terminal
When the mark for the data packet that equipment receives, number that control unit is received according to the mark and terminal device of the data packet sent out
The mark for the data packet that packet loss occurs is determined according to the mark of packet.The mark of the data packet can be the SN of data packet.Certainly
Can be the other identifier of data packet, as long as the mark can be with unique identification data packet.
It should be noted that embodiment two and the difference of embodiment one are：Embodiment is second is that data cell generates packet
Include the second data packet of the first poll instruction information.Indicate that information instruction obtains the second data mode report by first poll
It accuses.And embodiment one is the first data packet that control unit generation includes the first poll instruction information.Referred to by first poll
Show that information instruction obtains the second data status report.
The embodiment of the present application provides a kind of communication means, and this method includes：Data cell receives the first number from control unit
According to packet, if meeting polling conditions, data cell generates the second data packet；The packet header of second data packet is indicated including the first poll
Information.Data cell sends the second data packet to terminal device.Data cell receives the first data status report from terminal device；
Wherein, the first data status report is used to indicate the data packet that packet loss occurs.Data cell sends the second data to control unit
State report.That is, the scene based on CU-DU cuttings, this application provides specific data repeating methods, especially provide
The method for obtaining first data status report.
Further, it is two kinds of situations that step S502, which is divided to,：
The first situation is：Data cell judges whether present data transmission state meets polling conditions.
The second situation is：Control unit judges whether present data transmission state meets polling conditions.
Specifically, for the first situation, polling conditions are：
The quantity of the accumulative data packet sent of data cell meets first condition.
Alternatively,
The size of the accumulative data packet sent of data cell meets second condition.
Alternatively,
The time that data cell adds up transmission data packet meets third condition.
Alternatively,
The caching of data cell free time meets fourth condition.
Alternatively,
Second data packet is the last one data packet to be sent in data cell.
Alternatively,
The poll timer time-out of data cell.
Specifically, the first condition can be that the quantity of the accumulative data packet sent of data cell reaches the first default threshold
Value.The second condition can be that the size of the accumulative data packet sent of data cell reaches the second predetermined threshold value.The third
Condition can the time of the accumulative transmission data packet of data cell reach third predetermined threshold value.Fourth condition can be data cell
The ratio of free buffer size and total cache size be less than the 4th predetermined threshold value or the caching of occupancy of data cell is big
The small ratio with total cache size is more than or equal to the 5th predetermined threshold value.It is wherein above-mentioned the first predetermined threshold value, second default
Threshold value, third predetermined threshold value, the 4th predetermined threshold value and the 5th predetermined threshold value can be arranged according to actual conditions.The embodiment of the present application
It is without limitation.
For the second situation, the polling conditions are：The quantity of the accumulative data packet sent of control unit meets first
Condition.
Alternatively,
The size of the accumulative data packet sent of control unit meets second condition.
Alternatively,
The time that control unit adds up transmission data packet meets third condition.
Alternatively,
The caching of control unit free time meets fourth condition.
Alternatively,
First data packet the last one data packet to be sent on unit in order to control.
Alternatively,
The poll timer time-out of control unit.
Specifically, the first condition can be that the quantity of the accumulative data packet sent of control unit reaches the first default threshold
Value.The second condition can be that the size of the accumulative data packet sent of control unit reaches the second predetermined threshold value.The third
Condition can the time of the accumulative transmission data packet of control unit reach third predetermined threshold value.Fourth condition can be control unit
The ratio of free buffer size and total cache size be less than the 4th predetermined threshold value or the caching of occupancy of control unit is big
The small ratio with total cache size is more than or equal to the 5th predetermined threshold value.It is wherein above-mentioned the first predetermined threshold value, second default
Threshold value, third predetermined threshold value, the 4th predetermined threshold value and the 5th predetermined threshold value can be arranged according to actual conditions.The embodiment of the present application
It is without limitation.
When control unit determines that present data transmission state meets polling conditions, control unit sends the to data cell
One information, which, which is used to indicate, meets polling conditions.
Optionally, the SN of data packet that terminal device has received is determined according to the second data status report when control unit
More than retransmission data packet SN when, the state report of data packet before indicating retransmission data packet is successfully received.It is then described
Communication means further includes：Data cell receives the second information from control unit, which is used to indicate stopping and sends first
Poll indicates information.Specifically, after control unit receives the second data status report, and control unit determines no longer trigger wheel
When inquiry, control unit sends the second information to data cell, so that not regenerating the first round askes instruction information, to stop sending
First poll indicates information.Information is indicated to prevent data cell from sending unnecessary first poll, to save data sheet
First expense.
Optionally, the communication means further includes：When data cell does not receive four information of control unit transmission,
Data cell sends the 5th information to control unit；4th information is used to indicate control unit and receives the second data mode report
It accuses；The link that 5th information is used to that control unit to be asked to be deleted between data cell and control unit, and establish and another number
According to the link between unit.
Specifically, when data cell does not receive four information of control unit transmission within a preset period of time, data sheet
Member can regenerate the second data packet.To reacquire the second data status report.When data cell is more than preset time period
When not receiving four information of control unit transmission also, data cell sends the 5th information to control unit.So that control unit
The link between data cell and the control unit is deleted, and establishes the link between another data cell.
Alternatively, when data cell does not receive four information of control unit transmission, data cell statistics sends same
First poll indicate information number, when same first poll indicate information transmission times within preset range, data sheet
Member can regenerate the second data packet.To reacquire the second data status report.When same first poll indicates information
For transmission times not in preset range, data cell sends the 5th information to control unit.So that control unit deletes data sheet
Link between member and the control unit, and establish the link between another data cell.
Alternatively, data cell can be to control unit transmission data packet number of retransmissions.When data packet retransmission number reaches pre-
If when threshold value, control unit deletes the link between the control unit, and establishes the link between another data cell.
Alternatively, data cell can send channel quality parameter to control unit.When channel quality parameter is less than default threshold
When value, control unit deletes the link between the control unit, and establishes the link between another data cell.The letter
Road mass parameter can be channel quality instruction (Channel Quality Indicator, CQI) etc..
For above-described embodiment one, embodiment two and any optional mode, further also following optional mode：
Optionally, after the mark for the data packet that according to the determination of the first data status report packet packet loss occurs for control unit,
Determine that the data packet is buffered in data cell or control unit according to the mark of the data packet.Packet loss occurs when determining
Data pack buffer is in control unit, data packet that control unit need to be retransmitted to data unit retransmission.Packet loss occurs when determining
For data pack buffer in data cell, control unit sends third information to data cell, which, which is used to indicate, needs weight
The data packet of biography.It can be the data packet of generation packet loss wherein to need the data packet retransmitted, or for the data of packet loss partly occur
Packet.Such as：The SN that the data packet of packet loss occurs is 1 and 2, and the SN for the data packet that need to be retransmitted is only 1.Alternatively, the data that need to be retransmitted
The SN of packet is 1 and 2.
Optionally, the method further includes：Data cell receives the priority letter for the data packet that need to be retransmitted from control unit
Breath.
Specifically, priority of the priority for the data packet that control unit setting need to retransmit higher than transmission data packet for the first time.
When the data pack buffer that hair need to retransmit is in control unit, control unit carries precedence information in the data packet that need to be retransmitted
In, and send the packet to data cell.When the data pack buffer that need to be retransmitted is in data cell, data cell is by the number
It is sent to data cell according to the precedence information of packet, so that data cell sends the data packet according to the precedence information.Such as：
Data packet 1 is the data packet that need to be retransmitted, and data packet 2 is the data packet sent for the first time.The excellent of data packet 1 can be arranged in control unit
First grade is 1, and the priority of data packet 2 is 2.Wherein here numerical priority value is smaller, indicates that priority is higher.Numerical priority value
It is bigger, indicate that priority is lower.Based on this, data cell can preferential transmission data packet 1.Wherein need the excellent of the data packet retransmitted
First grade information format can also use the precedence information format of above-mentioned first data packet.The embodiment of the present application does not limit this
System.
Optionally, the data packet that need to be retransmitted can be put into TB by data cell, wherein needing the data packet and for the first time retransmitted
The data packet of transmission is multiplexed without TB.To ensure preferentially to send the data packet that need to be retransmitted.
Optionally, after data cell receives the third information of control unit transmission, data cell can stop sending out
The first poll is sent to indicate information.
In the application, the priority that data cell can send the data packet that need to be retransmitted according to the priority of data packet is believed
Breath, to improve data packet retransmission efficiency.
Optionally, the communication means further includes：The 6th information that data cell reception control unit is sent；6th letter
Breath is used to indicate the data packet of control unit discarding.
Specifically, since wireless link bandwidth is limited, the bottleneck eated dishes without rice or wine as data transmission easily forms mass data caching
In access network equipment, and cause data congestion.Such as：When using above-mentioned slit mode 2, control unit abandons PDCP
SDU, but since PDCP is pre-processed, the RLC PDU generated can not be deleted.Alternatively, when using above-mentioned slit mode 3,
Control unit abandons RLC SDU, and the RLC PDU generated at RLC-L layers can not be deleted.That is, in CU-DU cutting feelings
Under condition, as long as data cell has buffer area, after control unit packet discard, there is no mechanism to ensure that data cell also can
Abandon data.Therefore when control unit finds that data congestion occurs for protocol layer where it, control unit sends the to data cell
Six information；So that data cell packet discard.
Wherein the 6th information includes：The SN for first data packet that control unit abandons.Such case indicates data cell
Abandon all data packets since the SN.
Alternatively,
6th information includes：The SN for the corresponding data packet of confirmation message that control unit the last time receives.This feelings
Condition also illustrates that all data packets after data cell will abandon the SN.
Alternatively,
6th information includes：Control unit receives the SN of the corresponding data packet of confirmation message and does not receive confirmation message
The SN of corresponding data packet.Such as：Control unit sends the 6th information in the form of bitmap bitmap, which includes：Really
Recognize the SN of the corresponding data packet of message and does not receive the SN of the corresponding data packet of confirmation message.
Alternatively,
6th information includes：The SN for the data packet that control unit abandons.So that data cell abandons the corresponding numbers of these SN
According to packet.
Wherein the 6th information can be transmitted by CU-DU interface control planes or user plane.6th information can be
On the basis of existing data packet, an information being filled in idle domain.It can also be by least one of data packet word
Section expands, to indicate the priority of data packet.Similar to situation shown in Fig. 4, the application can be to user level-general packet
PDU types in Radio Service Tunneling Protocol (General Packet Radio Service-Userplane, GTP-U) agreement
It is extended, to send the 6th information.
Optionally, the communication means further includes：Data cell sends the 7th information to control unit；7th information is used
In the data packet that designation date unit abandons.
Wherein the 7th information includes：The SN for first data packet that data cell abandons.Such case indicates control unit
Abandon all data packets since the SN.
Alternatively,
7th information includes：The SN for the corresponding data packet of confirmation message that data cell the last time receives.This feelings
Condition also illustrates that all data packets after control unit will abandon the SN.
Alternatively,
7th information includes：Data cell receives the SN of the corresponding data packet of confirmation message and does not receive confirmation message
The SN of corresponding data packet.Such as：Data cell sends the 6th information in the form of bitmap bitmap, which includes：Really
Recognize the SN of the corresponding data packet of message and does not receive the SN of the corresponding data packet of confirmation message.
Alternatively,
7th information includes：The SN for the data packet that data cell abandons.So that control unit abandons the corresponding numbers of these SN
According to packet.
Wherein the 7th information can be transmitted by CU-DU interface control planes or user plane.7th information can be
On the basis of existing data packet, an information being filled in idle domain.It can also be by least one of data packet
Field expands, to indicate the priority of data packet.Such as：Similar to situation shown in Fig. 4, the application can be to GTP-U agreements
In PDU types or reserved field be extended, to send the 7th information.Part where ellipsis is reserved field in Fig. 4.
In the application, control unit to data cell by sending the 6th information, and data cell to control unit by sending out
The 7th information is sent, to alleviate data congestion.
Embodiment three
Optionally, Fig. 6 is a kind of interaction diagrams for communication means that the embodiment of the present application three provides, as shown in fig. 6, should
Method includes following flow：
Step S601：Data cell receives third data packet from terminal device, which includes：Second poll refers to
Show information.
Step S602：Data cell sends the 4th data packet to control unit, and the 4th data packet includes：Second poll refers to
Show information.
It is illustrated in conjunction with step S601 and step S602：If terminal device determines present data transmission, state meets poll
Condition, then terminal device generation includes the third data packet of the second poll instruction information, and will be sent to number to third data packet
According to unit.Polling conditions are the condition that poll obtains the 4th data status report.Second poll instruction information is used to indicate acquisition
4th data status report.Terminal device can be that the second poll indicates that fixed position is arranged in information.The position can be filled with 0
Or 1.When the position is filled with 0, then it represents that data packet does not carry the second poll instruction information, i.e. the data packet is common number
According to packet.When the position is filled with 1, then it represents that data packet has carried the second poll instruction information, i.e. the data packet is third number
According to packet.Alternatively, when the position is filled with 1, then it represents that data packet does not carry the second poll instruction information, i.e. the data packet is general
Logical data packet.When the position is filled with 0, then it represents that data packet has carried the second poll instruction information, i.e. the data packet is the
Three data packets.The application is without limitation.Certainly, the length of the second poll instruction information corresponding position is not limited to 1 bit, also
Can 2 compare top grade.The application is without limitation.
The association of 4th data packet and third data packet is all to include the second poll instruction information.
Step S603：Data cell receives third data status report from control unit.
Step S604：Data cell sends the 4th data status report to terminal device.
It is illustrated in conjunction with step S603 and step S604：The second poll that control unit receives data cell transmission refers to
After showing information, control unit sends third data status report to data cell.Data cell sends the 4th to terminal device
Data status report.Wherein, third data status report and the 4th data status report are used to instruction generation packet loss
Data packet.4th data status report includes：The mark and/or control unit for the data packet that control unit has been received are sent out
The mark of the data packet of raw packet loss.When the 4th data status report includes：When the mark of the data packet of packet loss occurs, alternatively, working as
4th data status report includes：The mark of the mark for the data packet that control unit has been received and the data packet of generation packet loss
When, terminal device can directly determine the data packet that packet loss occurs.When the 4th data status report includes：Control unit receives
Data packet mark when, the mark for the data packet that terminal device is received according to the mark and control unit of the data packet sent out
Determine the mark for the data packet that packet loss occurs.The mark of the data packet can be the SN of data packet.Can certainly be data
The other identifier of packet, as long as the mark can be with unique identification data packet.
It should be noted that embodiment three is similar with embodiment one, embodiment two.The difference is that embodiment three is
Terminal device obtain data status report process, and embodiment one and two be all control unit obtain data status report mistake
Journey.Therefore the optional mode of embodiment one and embodiment two can be accordingly applied in embodiment three.Details are not described herein.
It generally accesses net equipment and obtains the 4th data status report at RLC-H layers.Data packet is divided at RLC-L layers
Section, is combined the data packet after segmentation in MAC layer, and the data after combination are sent to PHY layer.It is provided based on the application
CU-DU cuttings 3 scene, data cell to control unit (RLC-H layers of alignment processing) send instruction information, the instruction information
It is possible that indicating to carry out cutting to RLC-H layers of data status report.It, can this application provides two kinds in order to avoid such case
Select mode.
A kind of optional mode, the communication means further include：Data cell to control unit send the 8th information, the 8th
Information is used to indicate data packet to be segmented.Data cell receives the data packet after segmentation from control unit.Control unit according to
8th information determines whether data packet to be segmented is the 4th data status report, however, it is determined that it is the 4th data status report,
Control unit determines previous either the latter data packet of the 4th data status report and to described previous or the latter
Data packet is segmented, and by after segmentation data packet and the 4th data status report be sent to data cell.So that data sheet
Member to after segmentation data packet and the 4th data status report be combined.
Another optional mode, the communication means further include：Data cell reception control unit sends the 9th information, should
9th information is used to indicate the 4th data status report.Data cell sends the tenth information to control unit, and the tenth information is used
In indicating data packet to be segmented.Data packet after the segmentation that data cell reception control unit is sent.That is, control is single
Member to data cell by sending the 9th information so that data cell knows which is the 4th data status report, such case
Under, the tenth information that data cell is sent to control unit does not include the SN of the 4th data status report, to avoid the 4th number
It is cut according to state report.If the 4th data status report is spread out of not yet, and has been connected to second the 4th data mode report
It accuses, at this moment data cell can delete the 4th old data status report, only retain newest 4th data status report.Or
Person, data cell reserve the position of the 4th data status report, avoid being segmented the 4th data status report.
To sum up, by the optional mode of above-mentioned two, it can prevent the 4th data status report from being cut, to improve data biography
Defeated reliability.
Example IV
Fig. 7 is a kind of structural schematic diagram of data cell provided by the present application.As shown in fig. 7, the data cell includes：
Receiving module 71, for receiving the first data packet from control unit, the packet header of first data packet includes first
Poll indicates information.
Sending module 72, for sending the second data packet to terminal device, the packet header of second data packet includes described
First poll indicates information.
The receiving module 71 is additionally operable to receive the first data status report from the terminal device；Wherein, described first
Data status report is used to indicate the data packet that packet loss occurs.
The sending module 72 is additionally operable to send second data status report to described control unit；Wherein, described
Second data status report is used to indicate the data packet that packet loss occurs.
Data cell provided by the embodiments of the present application can be used for executing the optional mode of embodiment one and embodiment one
In, the action or step that data cell executes, implementing principle and technical effect are similar, and details are not described herein again.
Optionally, the receiving module 71 is additionally operable to receive the priority of first data packet from described control unit
Information.Correspondingly, the sending module 72 is specifically used for：Preferentially second data packet is sent to the terminal device.
Optionally, the receiving module 71 is additionally operable to receive third information from described control unit, and the third information is used
In the data packet that instruction need to retransmit.
Optionally, the receiving module 71 is additionally operable to receive the excellent of the data packet that need to be retransmitted from described control unit
First grade information.
Data cell provided by the embodiments of the present application can be used for executing the optional mode of embodiment one and embodiment one
In, the action or step that data cell executes, implementing principle and technical effect are similar, and details are not described herein again.
Embodiment five
Fig. 8 is a kind of structural schematic diagram of data cell provided by the present application.As shown in figure 8, the data cell includes：
Receiving module 81, for receiving the first data packet from control unit.
If generation module 82 generates the second data packet for meeting polling conditions；The Bao Toubao of second data packet
Include the first poll instruction information.
Sending module 83, for sending second data packet to terminal device.
The receiving module 81 is additionally operable to receive the first data status report from the terminal device；Wherein, described first
Data status report is used to indicate the data packet that packet loss occurs.
The sending module 83 is additionally operable to send second data status report to described control unit；Wherein, described
Second data status report is used to indicate the data packet that packet loss occurs.
Data cell provided by the embodiments of the present application can be used for executing the optional mode of embodiment two and embodiment two
In, the action or step that data cell executes, implementing principle and technical effect are similar, and details are not described herein again.
Optionally, the polling conditions are：
The quantity of the accumulative data packet sent of the data cell meets first condition；Alternatively,
The size of the accumulative data packet sent of the data cell meets second condition；Alternatively,
The time that the data cell adds up transmission data packet meets third condition；Alternatively,
The caching of the data cell free time meets fourth condition；Alternatively,
Second data packet is the last one data packet to be sent in the data cell；Alternatively,
The poll timer time-out of the data cell.
Optionally, the receiving module 81 is additionally operable to receive the first information from described control unit, and the first information is used
Meet the polling conditions in instruction.
Optionally, the polling conditions are：
The quantity of the accumulative data packet sent of described control unit meets first condition；Alternatively,
The size of the accumulative data packet sent of described control unit meets second condition；Alternatively,
The time that described control unit adds up transmission data packet meets third condition；Alternatively,
The caching of described control unit free time meets fourth condition；Alternatively,
First data packet is the last one data packet to be sent in described control unit；Alternatively,
The poll timer time-out of described control unit.
Optionally, the receiving module 81 is additionally operable to receive the second information from described control unit, and second information is used
Stop sending the first poll instruction information in instruction.
Optionally, the receiving module 81 is additionally operable to receive third information from described control unit, and the third information is used
In the data packet that instruction need to retransmit.
Optionally, the sending module 83 is additionally operable to stop sending the first poll instruction information.
Optionally, the receiving module 81 is additionally operable to receive the excellent of the data packet that need to be retransmitted from described control unit
First grade information.
Optionally, the sending module 83 is additionally operable to not receive described control unit transmission when the receiving module
When four information, the 5th information is sent to described control unit；4th information is used to indicate described control unit and receives institute
State the second data status report；5th information is for asking described control unit to delete the data cell and the control
Link between unit, and establish the link between another data cell.
Optionally, the receiving module 81 is additionally operable to receive the 6th information that described control unit is sent；6th letter
Breath is used to indicate the data packet of described control unit discarding.
Optionally, the sending module 83 is additionally operable to send the 7th information to described control unit；7th information is used
In the data packet for indicating that the data cell abandons.
Data cell provided by the embodiments of the present application can be used for executing the optional mode of embodiment two and embodiment two
In, the action or step that data cell executes, implementing principle and technical effect are similar, and details are not described herein again.
Optionally, the receiving module 81 is additionally operable to receive third data packet, the third data from the terminal device
Packet includes：Second poll indicates information.
The sending module 83 is additionally operable to send the 4th data packet to described control unit, and the 4th data packet includes：
Second poll indicates information.
The receiving module 81 is additionally operable to receive third data status report from described control unit；Wherein, the third
Data status report is used to indicate the data packet that packet loss occurs；
The sending module 83 is additionally operable to send the 4th data status report to the terminal device；Wherein, described
4th data status report is used to indicate the data packet that packet loss occurs.
Optionally, the sending module 83 is additionally operable to send the 8th information to described control unit, and the 8th information is used
In indicating data packet to be segmented.
The receiving module 81 is additionally operable to receive the data packet after segmentation from described control unit.
Optionally, the receiving module 81 is additionally operable to receive described control unit the 9th information of transmission, the 9th information
It is used to indicate the 4th data status report.
The sending module 83 is additionally operable to send the tenth information to described control unit, and the tenth information is used to indicate
Data packet to be segmented.
The receiving module 81 is additionally operable to receive the data packet after the segmentation that described control unit is sent.
Data cell provided by the embodiments of the present application can be used for executing the optional mode of embodiment three and embodiment three
In, the action or step that data cell executes, implementing principle and technical effect are similar, and details are not described herein again.
Embodiment six
Fig. 9 is a kind of structural schematic diagram of control unit provided by the present application.As shown in figure 9, the control unit includes：
If sending module 91 sends the first data packet, first data for meeting polling conditions to data cell
The packet header of packet includes that the first poll indicates information；
Receiving module 92, for receiving the second data status report from the data cell；Wherein, the second data shape
State report is used to indicate the data packet that packet loss occurs.
Control unit provided by the embodiments of the present application can be used for executing the optional mode of embodiment one and embodiment one
In, the action or step that control unit executes, implementing principle and technical effect are similar, and details are not described herein again.
Optionally, the polling conditions are：
The quantity of the accumulative data packet sent of described control unit meets first condition；Alternatively,
The size of the accumulative data packet sent of described control unit meets second condition；Alternatively,
The time that described control unit adds up transmission data packet meets third condition；Alternatively,
The caching of described control unit free time meets fourth condition；Alternatively,
First data packet is the last one data packet to be sent in described control unit；Alternatively,
The poll timer time-out of described control unit.
Optionally, the sending module 91 is additionally operable to send the priority of first data packet to the data cell
Information；
Control unit provided by the embodiments of the present application can be used for executing the optional mode of embodiment one and embodiment one
In, the action or step that control unit executes, implementing principle and technical effect are similar, and details are not described herein again.
Embodiment seven
Figure 10 is a kind of structural schematic diagram of control unit provided by the present application.As shown in Figure 10, which includes：
Sending module 1001, for sending the first data packet to data cell；
Receiving module 1002, for receiving the second data status report from the data cell；Wherein, second data
State report is used to indicate the data packet that packet loss occurs.
Control unit provided by the embodiments of the present application can be used for executing the optional mode of embodiment two and embodiment two
In, the action or step that control unit executes, implementing principle and technical effect are similar, and details are not described herein again.
Optionally, the sending module 1001 is additionally operable to send the first information, the first information to the data cell
It is used to indicate and meets polling conditions.
Optionally, the sending module 1001 is additionally operable to send the second information, second information to the data cell
It is used to indicate stopping and sends the first poll instruction information.
Optionally, the sending module 1001 is additionally operable to send the 4th information, the 4th information to the data cell
It is used to indicate described control unit and receives second data status report.
Optionally, the receiving module 1002 is additionally operable to receive the 5th information that the data cell is sent；Described 5th
Information for asking described control unit to delete the link between the data cell and described control unit, and establish with it is another
Link between a data cell.
Optionally, the sending module 1001 is additionally operable to send third information, the third information to the data cell
It is used to indicate the data packet that need to be retransmitted.
Optionally, the sending module 1001 is additionally operable to send the data packet that need to be retransmitted to the data cell
Precedence information.
Optionally, the sending module 1001 is additionally operable to send the 6th information to the data cell；6th information
It is used to indicate the data packet of described control unit discarding.
Optionally, the receiving module 1001 is additionally operable to receive the 7th information that the data cell is sent；Described 7th
Information is used to indicate the data packet that the data cell abandons.
Control unit provided by the embodiments of the present application can be used for executing the optional mode of embodiment two and embodiment two
In, the action or step that control unit executes, implementing principle and technical effect are similar, and details are not described herein again.
Embodiment eight
Figure 11 is a kind of structural schematic diagram of control unit provided by the present application.As shown in figure 11, which includes：
Receiving module 1101 is additionally operable to receive the 4th data packet from the data cell, and the 4th data packet includes：Institute
State the second poll instruction information.
Sending module 1102 is additionally operable to send third data status report to the data cell.
Optionally, further include：Segmentation module 1103.
The receiving module 1101 is additionally operable to receive the 8th information from the data cell, and the 8th information is for referring to
Show data packet to be segmented.
The segmentation module 1103, for being segmented to data packet according to the 8th information；
The sending module 1102 is additionally operable to send the data packet after segmentation to the data cell.
Optionally, the sending module 1102 is additionally operable to send the 9th information, the 9th information to the data cell
It is used to indicate the 4th data status report.
The receiving module 1101 is additionally operable to receive the tenth information that the data cell is sent, and the tenth information is used
In indicating data packet to be segmented.
The segmentation module 1103, for being segmented to data packet according to the tenth information.
The sending module 1102 is additionally operable to send the data packet after segmentation to the data cell.
Control unit provided by the embodiments of the present application can be used for executing the optional mode of embodiment three and embodiment three
In, the action or step that control unit executes, implementing principle and technical effect are similar, and details are not described herein again.
Embodiment nine
Figure 12 is a kind of structural schematic diagram of data cell provided by the present application.As shown in figure 12, which includes：
Receiver 1201, for receiving the first data packet from control unit, the packet header of first data packet includes first
Poll indicates information.
Transmitter 1202, for sending the second data packet to terminal device, the packet header of second data packet includes described
First poll indicates information.
The receiver 1201 is additionally operable to receive the first data status report from the terminal device；Wherein, described first
Data status report is used to indicate the data packet that packet loss occurs.
The transmitter 1202 is additionally operable to send second data status report to described control unit；Wherein, described
Second data status report is used to indicate the data packet that packet loss occurs.
Data cell provided by the embodiments of the present application can be used for executing the optional mode of embodiment one and embodiment one
In, the action or step that data cell executes, implementing principle and technical effect are similar, and details are not described herein again.
Optionally, the receiver 1201 is additionally operable to receive the priority of first data packet from described control unit
Information.Correspondingly, the transmitter 1202 is specifically used for：Preferentially second data packet is sent to the terminal device.
Optionally, the receiver 1201 is additionally operable to receive third information from described control unit, and the third information is used
In the data packet that instruction need to retransmit.
Optionally, the receiver 1201 is additionally operable to receive the excellent of the data packet that need to be retransmitted from described control unit
First grade information.
Data cell provided by the embodiments of the present application can be used for executing the optional mode of embodiment one and embodiment one
In, the action or step that data cell executes, implementing principle and technical effect are similar, and details are not described herein again.
Embodiment ten
Figure 13 is a kind of structural schematic diagram of data cell provided by the present application.As shown in figure 13, which includes：
Receiver 1301, for receiving the first data packet from control unit.
If processor 1302 generates the second data packet for meeting polling conditions；The Bao Toubao of second data packet
Include the first poll instruction information.
Transmitter 1303, for sending second data packet to terminal device.
The receiver 1301 is additionally operable to receive the first data status report from the terminal device；Wherein, described first
Data status report is used to indicate the data packet that packet loss occurs.
The transmitter 1303 is additionally operable to send second data status report to described control unit；Wherein, described
Second data status report is used to indicate the data packet that packet loss occurs.
Data cell provided by the embodiments of the present application can be used for executing the optional mode of embodiment two and embodiment two
In, the action or step that data cell executes, implementing principle and technical effect are similar, and details are not described herein again.
Optionally, the polling conditions are：
The quantity of the accumulative data packet sent of the data cell meets first condition；Alternatively,
The size of the accumulative data packet sent of the data cell meets second condition；Alternatively,
The time that the data cell adds up transmission data packet meets third condition；Alternatively,
The caching of the data cell free time meets fourth condition；Alternatively,
Second data packet is the last one data packet to be sent in the data cell；Alternatively,
The poll timer time-out of the data cell.
Optionally, the receiver 1301 is additionally operable to receive the first information from described control unit, and the first information is used
Meet the polling conditions in instruction.
Optionally, the polling conditions are：
The quantity of the accumulative data packet sent of described control unit meets first condition；Alternatively,
The size of the accumulative data packet sent of described control unit meets second condition；Alternatively,
The time that described control unit adds up transmission data packet meets third condition；Alternatively,
The caching of described control unit free time meets fourth condition；Alternatively,
First data packet is the last one data packet to be sent in described control unit；Alternatively,
The poll timer time-out of described control unit.
Optionally, the receiver 1301 is additionally operable to receive the second information from described control unit, and second information is used
Stop sending the first poll instruction information in instruction.
Optionally, the receiver 1301 is additionally operable to receive third information from described control unit, and the third information is used
In the data packet that instruction need to retransmit.
Optionally, the transmitter 1303 is additionally operable to stop sending the first poll instruction information.
Optionally, the receiver 1301 is additionally operable to receive the excellent of the data packet that need to be retransmitted from described control unit
First grade information.
Optionally, the transmitter 1303 is additionally operable to not receive described control unit transmission when the receiving module
When four information, the 5th information is sent to described control unit；4th information is used to indicate described control unit and receives institute
State the second data status report；5th information is for asking described control unit to delete the data cell and the control
Link between unit, and establish the link between another data cell.
Optionally, the receiver 1301 is additionally operable to receive the 6th information that described control unit is sent；6th letter
Breath is used to indicate the data packet of described control unit discarding.
Optionally, the transmitter 1303 is additionally operable to send the 7th information to described control unit；7th information is used
In the data packet for indicating that the data cell abandons.
Data cell provided by the embodiments of the present application can be used for executing the optional mode of embodiment two and embodiment two
In, the action or step that data cell executes, implementing principle and technical effect are similar, and details are not described herein again.
Optionally, the receiver 1301 is additionally operable to receive third data packet, the third data from the terminal device
Packet includes：Second poll indicates information.
The transmitter 1303 is additionally operable to send the 4th data packet to described control unit, and the 4th data packet includes：
Second poll indicates information.
The receiver 1301 is additionally operable to receive third data status report from described control unit；Wherein, the third
Data status report is used to indicate the data packet that packet loss occurs；
The transmitter 1303 is additionally operable to send the 4th data status report to the terminal device；Wherein, described
4th data status report is used to indicate the data packet that packet loss occurs.
Optionally, the transmitter 1303 is additionally operable to send the 8th information to described control unit, and the 8th information is used
In indicating data packet to be segmented.
The receiver 1301 is additionally operable to receive the data packet after segmentation from described control unit.
Optionally, the receiver 1301 is additionally operable to receive described control unit the 9th information of transmission, the 9th information
It is used to indicate the 4th data status report.
The transmitter 1303 is additionally operable to send the tenth information to described control unit, and the tenth information is used to indicate
Data packet to be segmented.
The receiver 1301 is additionally operable to receive the data packet after the segmentation that described control unit is sent.
Data cell provided by the embodiments of the present application can be used for executing the optional mode of embodiment three and embodiment three
In, the action or step that data cell executes, implementing principle and technical effect are similar, and details are not described herein again.
Embodiment 11
Figure 14 is a kind of structural schematic diagram of control unit provided by the present application.As shown in figure 14, which includes：
If transmitter 1401 sends the first data packet, first data for meeting polling conditions to data cell
The packet header of packet includes that the first poll indicates information.
Receiver 1402, for receiving the second data status report from the data cell；Wherein, the second data shape
State report is used to indicate the data packet that packet loss occurs.
Control unit provided by the embodiments of the present application can be used for executing the optional mode of embodiment one and embodiment one
In, the action or step that control unit executes, implementing principle and technical effect are similar, and details are not described herein again.
Optionally, the polling conditions are：
The quantity of the accumulative data packet sent of described control unit meets first condition；Alternatively,
The size of the accumulative data packet sent of described control unit meets second condition；Alternatively,
The time that described control unit adds up transmission data packet meets third condition；Alternatively,
The caching of described control unit free time meets fourth condition；Alternatively,
First data packet is the last one data packet to be sent in described control unit；Alternatively,
The poll timer time-out of described control unit.
Optionally, the transmitter 1401 is additionally operable to send the priority of first data packet to the data cell
Information；
Control unit provided by the embodiments of the present application can be used for executing the optional mode of embodiment one and embodiment one
In, the action or step that control unit executes, implementing principle and technical effect are similar, and details are not described herein again.
Embodiment 12
Figure 15 is a kind of structural schematic diagram of control unit provided by the present application.As shown in figure 15, which includes：
Transmitter 1501, for sending the first data packet to data cell；
Receiver 1502, for receiving the second data status report from the data cell；Wherein, the second data shape
State report is used to indicate the data packet that packet loss occurs.
Control unit provided by the embodiments of the present application can be used for executing the optional mode of embodiment two and embodiment two
In, the action or step that control unit executes, implementing principle and technical effect are similar, and details are not described herein again.
Optionally, the transmitter 1501 is additionally operable to send the first information to the data cell, and the first information is used
Meet polling conditions in instruction.
Optionally, the transmitter 1501 is additionally operable to send the second information to the data cell, and second information is used
Stop sending the first poll instruction information in instruction.
Optionally, the transmitter 1501 is additionally operable to send the 4th information to the data cell, and the 4th information is used
Second data status report is received in instruction described control unit.
Optionally, the receiver 1502 is additionally operable to receive the 5th information that the data cell is sent；5th letter
Breath for asking described control unit to delete the link between the data cell and described control unit, and establish and another
Link between data cell.
Optionally, the transmitter 1501 is additionally operable to send third information to the data cell, and the third information is used
In the data packet that instruction need to retransmit.
Optionally, the transmitter 1501 is additionally operable to send the excellent of the data packet that need to be retransmitted to the data cell
First grade information.
Optionally, the transmitter 1501 is additionally operable to send the 6th information to the data cell；6th information is used
In the data packet that instruction described control unit abandons.
Optionally, the receiver 1502 is additionally operable to receive the 7th information that the data cell is sent；7th letter
Breath is used to indicate the data packet that the data cell abandons.
Control unit provided by the embodiments of the present application can be used for executing the optional mode of embodiment two and embodiment two
In, the action or step that control unit executes, implementing principle and technical effect are similar, and details are not described herein again.
Embodiment 13
Figure 16 is a kind of structural schematic diagram of control unit provided by the present application.As shown in figure 16, which includes：
Receiver 1601 is additionally operable to receive the 4th data packet from the data cell, and the 4th data packet includes：It is described
Second poll indicates information.
Transmitter 1602 is additionally operable to send third data status report to the data cell.
Optionally, further include：Processor 1603.
The receiver 1601 is additionally operable to receive the 8th information from the data cell, and the 8th information is used to indicate
Data packet to be segmented.
The processor 1603, for being segmented to data packet according to the 8th information；
The transmitter 1602 is additionally operable to send the data packet after segmentation to the data cell.
Optionally, the transmitter 1602 is additionally operable to send the 9th information to the data cell, and the 9th information is used
In instruction the 4th data status report.
The receiver 1601 is additionally operable to receive the tenth information that the data cell is sent, and the tenth information is used for
Indicate data packet to be segmented.
The processor 1603, for being segmented to data packet according to the tenth information.
The transmitter 1602 is additionally operable to send the data packet after segmentation to the data cell.
Control unit provided by the embodiments of the present application can be used for executing the optional mode of embodiment three and embodiment three
In, the action or step that control unit executes, implementing principle and technical effect are similar, and details are not described herein again.
In order to remember the scheme for clearly explaining the application, said program is further elaborated from control unit side.
The present invention also provides following embodiments.It should be noted that it is not absolutely required to defer to for the number of following embodiment
The number order of preceding embodiment：
Embodiment 1, a kind of communication means, which is characterized in that including：
If meeting polling conditions, control unit sends the first data packet, the packet of first data packet to data cell
Head includes that the first poll indicates information；
Described control unit receives the second data status report from the data cell；Wherein, second data mode
Report is used to indicate the data packet that packet loss occurs.
Embodiment 2, according to method described in embodiment 1, which is characterized in that the polling conditions are：
The quantity of the accumulative data packet sent of described control unit meets first condition；Alternatively,
The size of the accumulative data packet sent of described control unit meets second condition；Alternatively,
The time that described control unit adds up transmission data packet meets third condition；Alternatively,
The caching of described control unit free time meets fourth condition；Alternatively,
First data packet is the last one data packet to be sent in described control unit；Alternatively,
The poll timer time-out of described control unit.
Embodiment 3, the method according to embodiment 1 or 2, which is characterized in that further include：
Described control unit sends the precedence information of first data packet to the data cell.
Embodiment 4, a kind of communication means, which is characterized in that including：
Control unit sends the first data packet to data cell；
Described control unit receives the second data status report from the data cell；Wherein, second data mode
Report is used to indicate the data packet that packet loss occurs.
Embodiment 5, the method according to embodiment 4, which is characterized in that further include：
Described control unit sends the first information to the data cell, and the first information, which is used to indicate, meets poll item
Part.
Embodiment 6, the method according to embodiment 4 or 5, which is characterized in that further include：
Described control unit sends the second information to the data cell, and second information is used to indicate stopping and sends institute
State the first poll instruction information.
Embodiment 7, according to embodiment 4-6 any one of them methods, which is characterized in that further include：
Described control unit sends the 4th information to the data cell, and it is single that the 4th information is used to indicate the control
Member receives second data status report.
Embodiment 8, according to embodiment 4-6 any one of them methods, which is characterized in that further include：
Described control unit receives the 5th information that the data cell is sent；5th information is for asking the control
Link described in element deletion processed between data cell and described control unit, and establish the chain between another data cell
Road.
Embodiment 9, according to embodiment 4-8 any one of them methods, which is characterized in that further include：
Described control unit sends third information to the data cell, and the third information is used to indicate the number that need to be retransmitted
According to packet.
Embodiment 10, the method according to embodiment 9, which is characterized in that further include：
Described control unit sends the precedence information of the data packet that need to be retransmitted to the data cell.
Embodiment 11, according to embodiment 1-10 any one of them methods, which is characterized in that further include：
Described control unit sends the 6th information to the data cell；It is single that 6th information is used to indicate the control
The data packet that member abandons.
Embodiment 12, according to embodiment 1-11 any one of them methods, which is characterized in that further include：
Described control unit receives the 7th information that the data cell is sent；7th information is used to indicate the number
The data packet abandoned according to unit.
Embodiment 13, according to embodiment 1-12 any one of them methods, which is characterized in that further include：
Described control unit receives the 4th data packet from the data cell, and the 4th data packet includes：Described second
Poll indicates information；
Described control unit sends third data status report to the data cell.
Embodiment 14, the method according to embodiment 13, which is characterized in that further include：
Described control unit receives the 8th information from the data cell, and the 8th information is used to indicate number to be segmented
According to packet；
Described control unit is segmented data packet according to the 8th information；
Described control unit sends the data packet after segmentation to the data cell.
Embodiment 15, the method according to embodiment 13, which is characterized in that further include：
Described control unit sends the 9th information to the data cell, and the 9th information is used to indicate the 4th number
According to state report；
Described control unit receives the tenth information that the data cell is sent, and the tenth information, which is used to indicate, to be waited being segmented
Data packet；
Described control unit is segmented data packet according to the tenth information；
Described control unit sends the data packet after segmentation to the data cell.
Embodiment 16, a kind of control unit, which is characterized in that including：
If sending module sends the first data packet, first data packet for meeting polling conditions to data cell
Packet header include the first poll indicate information；
Receiving module, for receiving the second data status report from the data cell；Wherein, second data mode
Report is used to indicate the data packet that packet loss occurs.
Embodiment 17, the control unit according to embodiment 16, which is characterized in that the polling conditions are：
The quantity of the accumulative data packet sent of described control unit meets first condition；Alternatively,
The size of the accumulative data packet sent of described control unit meets second condition；Alternatively,
The time that described control unit adds up transmission data packet meets third condition；Alternatively,
The caching of described control unit free time meets fourth condition；Alternatively,
First data packet is the last one data packet to be sent in described control unit；Alternatively,
The poll timer time-out of described control unit.
Embodiment 18, the control unit according to embodiment 16 or 17, which is characterized in that
The sending module is additionally operable to send the precedence information of first data packet to the data cell.
Embodiment 19, a kind of control unit, which is characterized in that including：
Sending module, for sending the first data packet to data cell；
Receiving module, for receiving the second data status report from the data cell；Wherein, second data mode
Report is used to indicate the data packet that packet loss occurs.
Embodiment 20, the control unit according to embodiment 19, which is characterized in that
The sending module is additionally operable to send the first information to the data cell, and the first information is used to indicate full
Sufficient polling conditions.
Embodiment 21, the control unit according to embodiment 19 or 20, which is characterized in that
The sending module is additionally operable to send the second information to the data cell, and second information, which is used to indicate, stops
Only send the first poll instruction information.
Embodiment 22, according to embodiment 19-21 any one of them control units, which is characterized in that
The sending module is additionally operable to send the 4th information to the data cell, and the 4th information is used to indicate institute
It states control unit and receives second data status report.
Embodiment 23, according to embodiment 19-21 any one of them control units, which is characterized in that
The receiving module is additionally operable to receive the 5th information that the data cell is sent；5th information is for asking
It asks described control unit to delete the link between the data cell and described control unit, and establishes and another data cell
Between link.
Embodiment 24, according to embodiment 19-23 any one of them control units, which is characterized in that
The sending module is additionally operable to send third information to the data cell, and the third information, which is used to indicate, to be needed
The data packet of re-transmission.
Embodiment 25, the control unit according to embodiment 24, which is characterized in that
The sending module is additionally operable to send the precedence information of the data packet that need to be retransmitted to the data cell.
Embodiment 26, according to embodiment 19-25 any one of them control units, which is characterized in that
The sending module is additionally operable to send the 6th information to the data cell；6th information is used to indicate institute
State the data packet of control unit discarding.
Embodiment 27, according to embodiment 19-26 any one of them control units, which is characterized in that
The receiving module is additionally operable to receive the 7th information that the data cell is sent；7th information is for referring to
Show the data packet that the data cell abandons.
Embodiment 28, according to embodiment 19-27 any one of them control units, which is characterized in that
The receiving module is additionally operable to receive the 4th data packet from the data cell, and the 4th data packet includes：Institute
State the second poll instruction information；
The sending module is additionally operable to send third data status report to the data cell.
Embodiment 29, the control unit according to embodiment 28, which is characterized in that further include：Segmentation module；
The receiving module is additionally operable to receive the 8th information from the data cell, and the 8th information, which is used to indicate, to be waited for
The data packet of segmentation；
The segmentation module, for being segmented to data packet according to the 8th information；
The sending module is additionally operable to send the data packet after segmentation to the data cell.
Embodiment 30, the control unit according to embodiment 28, which is characterized in that further include：Segmentation module；
The sending module is additionally operable to send the 9th information to the data cell, and the 9th information is used to indicate institute
State the 4th data status report；
The receiving module is additionally operable to receive the tenth information that the data cell is sent, and the tenth information is for referring to
Show data packet to be segmented；
The segmentation module, for being segmented to data packet according to the tenth information；
The sending module is additionally operable to send the data packet after segmentation to the data cell.
Claims (36)
1. a kind of communication means, which is characterized in that including：
Data cell receives the first data packet from control unit, and the packet header of first data packet includes the first poll instruction letter
Breath；
The data cell sends the second data packet to terminal device, and the packet header of second data packet includes first poll
Indicate information；
The data cell receives the first data status report from the terminal device；Wherein, first data status report
It is used to indicate the data packet that packet loss occurs；
The data cell sends the second data status report to described control unit；Wherein, second data status report
It is used to indicate the data packet that packet loss occurs.
2. according to the method described in claim 1, it is characterized in that, further including：
The data cell receives the precedence information of first data packet from described control unit；
Correspondingly, the data cell sends the second data packet to terminal device, including：
The data cell preferentially sends second data packet to the terminal device.
3. method according to claim 1 or 2, which is characterized in that further include：
The data cell receives third information from described control unit, and the third information is used to indicate the data that need to be retransmitted
Packet.
4. according to the method described in claim 3, it is characterized in that, further including：
The data cell receives the precedence information of the data packet that need to be retransmitted from described control unit.
5. a kind of communication means, which is characterized in that including：
Data cell receives the first data packet from control unit；
If meeting polling conditions, the data cell generates the second data packet；The packet header of second data packet includes first
Poll indicates information；
The data cell sends second data packet to terminal device；
The data cell receives the first data status report from the terminal device；Wherein, first data status report
It is used to indicate the data packet that packet loss occurs；
The data cell sends the second data status report to described control unit；Wherein, second data status report
It is used to indicate the data packet that packet loss occurs.
6. according to the method described in claim 5, it is characterized in that, the polling conditions are：
The quantity of the accumulative data packet sent of the data cell meets first condition；Alternatively,
The size of the accumulative data packet sent of the data cell meets second condition；Alternatively,
The time that the data cell adds up transmission data packet meets third condition；Alternatively,
The caching of the data cell free time meets fourth condition；Alternatively,
Second data packet is the last one data packet to be sent in the data cell；Alternatively,
The poll timer time-out of the data cell.
7. according to the method described in claim 5, it is characterized in that, further including：
The data cell receives the first information from described control unit, and the first information, which is used to indicate, meets the poll item
Part.
8. the method according to the description of claim 7 is characterized in that the polling conditions are：
The quantity of the accumulative data packet sent of described control unit meets first condition；Alternatively,
The size of the accumulative data packet sent of described control unit meets second condition；Alternatively,
The time that described control unit adds up transmission data packet meets third condition；Alternatively,
The caching of described control unit free time meets fourth condition；Alternatively,
First data packet is the last one data packet to be sent in described control unit；Alternatively,
The poll timer time-out of described control unit.
9. according to claim 5-8 any one of them methods, which is characterized in that further include：
The data cell receives the second information from described control unit, and second information is used to indicate stopping and sends described the
One poll indicates information.
10. according to claim 5-8 any one of them methods, which is characterized in that further include：
The data cell receives third information from described control unit, and the third information is used to indicate the data that need to be retransmitted
Packet.
11. according to the method described in claim 10, it is characterized in that, further including：
The data cell stops sending the first poll instruction information.
12. the method according to claim 10 or 11, which is characterized in that further include：
The data cell receives the precedence information of the data packet that need to be retransmitted from described control unit.
13. according to claim 5-12 any one of them methods, which is characterized in that further include：
When the data cell does not receive four information of described control unit transmission, the data cell is to the control
Unit sends the 5th information；4th information is used to indicate described control unit and receives second data status report；Institute
The 5th information is stated for asking described control unit to delete the link between the data cell and described control unit, and is established
With the link between another data cell.
14. according to claim 1-13 any one of them methods, which is characterized in that further include：
The data cell receives the 6th information that described control unit is sent；It is single that 6th information is used to indicate the control
The data packet that member abandons.
15. according to claim 1-14 any one of them methods, which is characterized in that further include：
The data cell sends the 7th information to described control unit；7th information is used to indicate the data cell and loses
The data packet abandoned.
16. according to claim 1-15 any one of them methods, which is characterized in that further include：
The data cell receives third data packet from the terminal device, and the third data packet includes：Second poll indicates
Information；
The data cell sends the 4th data packet to described control unit, and the 4th data packet includes：Second poll
Indicate information；
The data cell receives third data status report from described control unit；Wherein, the third data status report
It is used to indicate the data packet that packet loss occurs；
The data cell sends the 4th data status report to the terminal device；Wherein, the 4th data status report
It is used to indicate the data packet that packet loss occurs.
17. according to the method for claim 16, which is characterized in that further include：
The data cell sends the 8th information to described control unit, and the 8th information is used to indicate data to be segmented
Packet；
The data cell receives the data packet after segmentation from described control unit.
18. according to the method for claim 16, which is characterized in that further include：
The data cell receives described control unit and sends the 9th information, and the 9th information is used to indicate the 4th data
State report；
The data cell sends the tenth information to described control unit, and the tenth information is used to indicate data to be segmented
Packet；
The data cell receives the data packet after the segmentation that described control unit is sent.
19. a kind of data cell, which is characterized in that including：
Receiving module, for receiving the first data packet from control unit, the packet header of first data packet refers to including the first poll
Show information；
Sending module, for sending the second data packet to terminal device, the packet header of second data packet includes the first round
Ask instruction information；
The receiving module is additionally operable to receive the first data status report from the terminal device；Wherein, the first data shape
State report is used to indicate the data packet that packet loss occurs；
The sending module is additionally operable to send second data status report to described control unit；Wherein, second number
The data packet that packet loss occurs is used to indicate according to state report.
20. data cell according to claim 19, which is characterized in that further include：
The receiving module is additionally operable to receive the precedence information of first data packet from described control unit；
Correspondingly, the sending module is specifically used for：Preferentially second data packet is sent to the terminal device.
21. the data cell according to claim 19 or 20, which is characterized in that
The receiving module is additionally operable to receive third information from described control unit, and the third information is used to indicate and needs to retransmit
Data packet.
22. data cell according to claim 21, which is characterized in that
The receiving module is additionally operable to receive the precedence information of the data packet that need to be retransmitted from described control unit.
23. a kind of data cell, which is characterized in that including：
Receiving module, for receiving the first data packet from control unit；
If generation module generates the second data packet for meeting polling conditions；The packet header of second data packet includes first
Poll indicates information；
Sending module, for sending second data packet to terminal device；
The receiving module is additionally operable to receive the first data status report from the terminal device；Wherein, the first data shape
State report is used to indicate the data packet that packet loss occurs；
The sending module is additionally operable to send the second data status report to described control unit；Wherein, the second data shape
State report is used to indicate the data packet that packet loss occurs.
24. data cell according to claim 23, which is characterized in that the polling conditions are：
The quantity of the accumulative data packet sent of the data cell meets first condition；Alternatively,
The size of the accumulative data packet sent of the data cell meets second condition；Alternatively,
The time that the data cell adds up transmission data packet meets third condition；Alternatively,
The caching of the data cell free time meets fourth condition；Alternatively,
Second data packet is the last one data packet to be sent in the data cell；Alternatively,
The poll timer time-out of the data cell.
25. data cell according to claim 23, which is characterized in that
The receiving module is additionally operable to receive the first information from described control unit, and the first information, which is used to indicate, meets institute
State polling conditions.
26. data cell according to claim 25, which is characterized in that the polling conditions are：
The quantity of the accumulative data packet sent of described control unit meets first condition；Alternatively,
The size of the accumulative data packet sent of described control unit meets second condition；Alternatively,
The time that described control unit adds up transmission data packet meets third condition；Alternatively,
The caching of described control unit free time meets fourth condition；Alternatively,
First data packet is the last one data packet to be sent in described control unit；Alternatively,
The poll timer time-out of described control unit.
27. according to claim 23-26 any one of them data cells, which is characterized in that
The receiving module is additionally operable to receive the second information from described control unit, and second information is used to indicate stopping hair
Send the first poll instruction information.
28. according to claim 23-26 any one of them data cells, which is characterized in that
The receiving module is additionally operable to receive third information from described control unit, and the third information is used to indicate and needs to retransmit
Data packet.
29. data cell according to claim 28, which is characterized in that
The sending module is additionally operable to stop sending the first poll instruction information.
30. the data cell according to claim 28 or 29, which is characterized in that
The receiving module is additionally operable to receive the precedence information of the data packet that need to be retransmitted from described control unit.
31. according to claim 23-30 any one of them data cells, which is characterized in that
The sending module is additionally operable to when the receiving module does not receive four information of described control unit transmission, to
Described control unit sends the 5th information；4th information is used to indicate described control unit and receives second data mode
Report；5th information is for asking described control unit to delete the chain between the data cell and described control unit
Road, and establish the link between another data cell.
32. according to claim 19-31 any one of them data cells, which is characterized in that
The receiving module is additionally operable to receive the 6th information that described control unit is sent；6th information is used to indicate institute
State the data packet of control unit discarding.
33. according to claim 19-32 any one of them data cells, which is characterized in that
The sending module is additionally operable to send the 7th information to described control unit；7th information is used to indicate the number
The data packet abandoned according to unit.
34. according to claim 19-33 any one of them data cells, which is characterized in that
The receiving module is additionally operable to receive third data packet from the terminal device, and the third data packet includes：Second wheel
Ask instruction information；
The sending module is additionally operable to send the 4th data packet to described control unit, and the 4th data packet includes：Described
Two polls indicate information；
The receiving module is additionally operable to receive third data status report from described control unit；Wherein, the third data shape
State report is used to indicate the data packet that packet loss occurs；
The sending module is additionally operable to send the 4th data status report to the terminal device；Wherein, the 4th number
The data packet that packet loss occurs is used to indicate according to state report.
35. data cell according to claim 34, which is characterized in that
The sending module is additionally operable to send the 8th information to described control unit, and the 8th information, which is used to indicate, to be waited being segmented
Data packet；
The receiving module is additionally operable to receive the data packet after segmentation from described control unit.
36. data cell according to claim 34, which is characterized in that
The receiving module is additionally operable to receive described control unit the 9th information of transmission, and the 9th information is used to indicate described
4th data status report；
The sending module is additionally operable to send the tenth information to described control unit, and the tenth information, which is used to indicate, to be waited being segmented
Data packet；
The receiving module is additionally operable to receive the data packet after the segmentation that described control unit is sent.
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| PCT/CN2018/079731 WO2018171607A1 (en) | 2017-03-24 | 2018-03-21 | Communication method, distributed unit and control unit |
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| CN111988240B (en) * | 2020-07-27 | 2024-03-29 | 北京北方华创微电子装备有限公司 | Data transmission method and device, electronic equipment and storage medium |
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| CN108631959B (en) | 2021-07-16 |
| WO2018171607A1 (en) | 2018-09-27 |
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