CN106301696B - A kind of the bursty data sending, receiving method and device of ultralow time delay business - Google Patents
A kind of the bursty data sending, receiving method and device of ultralow time delay business Download PDFInfo
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- CN106301696B CN106301696B CN201510276562.3A CN201510276562A CN106301696B CN 106301696 B CN106301696 B CN 106301696B CN 201510276562 A CN201510276562 A CN 201510276562A CN 106301696 B CN106301696 B CN 106301696B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
- H04L1/1642—Formats specially adapted for sequence numbers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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Abstract
The invention discloses a kind of bursty data sending, receiving method of ultralow time delay business and devices, comprising: determine have it is being generated by ultralow time delay business, have paroxysmal burst packet reach base station；Data packet is transmitted in pause base station on a physical layer, and sends the burst packet in system specified bandwidth on determining OFDM symbol.Terminal is handled after being determined as burst packet by the structure of burst packet in the data packet for receiving base station transmission, and the structure is that base station is pre-configured with to terminal.Burst type ultralow time delay data packet transmission services can be supported in the premise for not influencing existing long term evolution conventional terminal business support using the present invention.
Description
Technical field
The present invention relates to field of communication technology, in particular to the bursty data transmission of a kind of ultralow time delay business, recipient
Method and device.
Background technique
Existing mobile communication is mainly interpersonal communication, with the miniaturization and intelligence of hardware device, not
The high speed between mobile communication more " people and objects " and " object and object " come connects application.MTC(Machine Type
Communication, machine communication) service application range is very extensive, such as portable medical, car networking, smart home, industry control
System, environmental monitoring etc. will will push MTC system application explosive growth, and large number of equipment will access network, realize really " all things on earth
Interconnection " brings boundless vital force for mobile communication.Meanwhile extensive MTC system application range can also be brought to mobile communication it is new
Technological challenge, for example, real-time cloud computing, virtual reality, game on line, tele-medicine, intelligent transportation, smart grid, it is long-range in real time
The business such as control are more sensitive to time delay, propose higher demand to time delay.
Such as: it is related to including using the service security control in mobile 3 D target, virtual reality, intelligent transportation, intelligence electricity
The application of net etc., it is desirable that delay is limited in a few ms ranks；The demand of 5th Generation Mobile Communication System thinks RTT (Round Trip
Time, winding time delay) in the 1ms order of magnitude；Real-time game, M2M (Machine-To-Machine, Machine To Machine), sensor
The requirement of alarm or event detection scene to time delay is no more than 100ms, wherein is had based on sensor alarm or event detection scene
Most down to the delay requirement of 2ms.
Therefore, need to consider the time delay of eating dishes without rice or wine of Millisecond in ultralow time delay scene MTC system time delay.However, the prior art
Deficiency be: the transmission plan of existing LTE system is unable to satisfy the demand.
Summary of the invention
It is prominent to reduce the present invention provides a kind of bursty data sending, receiving method of ultralow time delay business and device
The transmission delay of data is sent out, to meet the requirement of ultralow time delay business.
A kind of bursty data sending method of ultralow time delay business is provided in the embodiment of the present invention, comprising:
Determining has burst packet to reach base station, and the burst packet is generated by ultralow time delay business, has prominent
The data packet of hair property；
Data packet is transmitted in pause base station on a physical layer, and determines that sending the burst packet need to be what frequency domain was specified
The OFDM symbol occupied on regiment commander's width；
The burst packet is sent in system specified bandwidth in determining OFDM symbol.
Preferably, further comprising after sending the burst packet using PDCCH:
By being scheduled for the ePDCCH of the terminal configuration occupied by the PDCCH to terminal.
Preferably, pause base station sends data packet on a physical layer is when sending the burst packet using PDSCH
Suspend the transmission on PDSCH.
Preferably, passing through fixed system bandwidth center or edge when the burst packet occupies an OFDM symbol
Control subcarrier instruction terminal send the burst packet, the volume of the burst packet is sent by business subcarrier
Code and target terminal mark；
Or, passing through the subcarrier instruction terminal transmission for configuration when the burst packet occupies multiple OFDM symbols
The burst packet format, by control subcarrier send the burst packet target terminal mark, pass through
Business subcarrier sends the coding of the burst packet.
Preferably, further comprising: instruction terminal is directed to the resource of the burst packet feeding back ACK.
A kind of bursty data method of reseptance of ultralow time delay business is provided in the embodiment of the present invention, comprising:
After the data packet for receiving base station transmission, determine whether the data packet is burst packet, the bursty data
Packet is generated by ultralow time delay business, has paroxysmal data packet；
It after being determined as the burst packet, is handled by the structure of the burst packet, the structure is base
Station is pre-configured with to terminal.
Preferably, the burst packet is to further comprise from PDCCH reception:
Terminal is scheduled according to the scheduling information on the ePDCCH configured for terminal.
Preferably, when the burst packet occupies an OFDM symbol, at fixed system bandwidth center or edge
Control subcarrier reception base station send instruction, the coding and target terminal of the burst packet described in business subcarrier reception
Mark, determines whether the data packet is burst packet according to the instruction；
Or, when the burst packet occupies multiple OFDM symbols, in the subcarrier reception base station transmission for configuration
Instruction, control subcarrier reception described in burst packet target terminal mark, described in business subcarrier reception dash forward
The coding for sending out data packet determines whether the data packet is burst packet and the determining burst packet according to the instruction
Format.
Preferably, further comprising:
Feedback is directed to the ACK of the burst packet in the resource of base station instruction.
A kind of bursty data sending device of ultralow time delay business is provided in the embodiment of the present invention, comprising:
Determining module has burst packet to reach base station for determining, the burst packet is by ultralow time delay business
It generates, there is paroxysmal data packet；
Sending module transmits data packet for suspending base station on a physical layer, and determines that sending the burst packet needs
The OFDM symbol occupied in frequency domain system specified bandwidth；It is sent in system specified bandwidth in determining OFDM symbol
The burst packet.
Preferably, further comprising:
Indicating module is dispatched, for after sending the burst packet using PDCCH, by be occupied by the PDCCH
Terminal configuration ePDCCH terminal is scheduled.
Preferably, sending module is further used for when sending the burst packet using PDSCH, suspend base station in object
It is the transmission suspended on PDSCH that data packet is sent on reason layer.
Preferably, when sending module is further used for one OFDM symbol of burst packet occupancy, by fixed
The burst packet that the control subcarrier instruction terminal at system bandwidth center or edge is sent, is sent by business subcarrier
The coding and target terminal of the burst packet identify；Or, passing through use when the burst packet occupies multiple OFDM symbols
In the format for the burst packet that the subcarrier instruction terminal of configuration is sent, the burst number is sent by control subcarrier
According to the mark of the target terminal of packet, the coding of the burst packet is sent by business subcarrier.
Preferably, further comprising: ACK indicating module is used to indicate terminal for the burst packet feeding back ACK
Resource.
A kind of bursty data reception device of ultralow time delay business is provided in the embodiment of the present invention, comprising:
Receiving module, for determining whether the data packet is burst packet after the data packet for receiving base station transmission,
The burst packet is generated by ultralow time delay business, has paroxysmal data packet；
Processing module, for being handled by the structure of the burst packet after being determined as the burst packet,
The structure is that base station is pre-configured with to terminal.
Preferably, further comprising:
Scheduler module is used for when from burst packet described in PDCCH reception, according on the ePDCCH configured for terminal
Scheduling information is scheduled terminal.
Preferably, receiving module is further used for when the burst packet occupies an OFDM symbol, fixed
The instruction that the control subcarrier reception base station at system bandwidth center or edge is sent, the bursty data described in business subcarrier reception
The coding and target terminal of packet identify, and determine whether the data packet is burst packet according to the instruction；Or, in the burst number
When occupying multiple OFDM symbols according to packet, in the instruction of the subcarrier reception base station transmission for configuration, in control subcarrier reception
The mark of the target terminal of the burst packet, the coding of the burst packet described in business subcarrier reception, refers to according to this
Show and determines whether the data packet is burst packet and the format for determining the burst packet.
Preferably, further comprising: ACK module is directed to the bursty data for feeding back in the resource that base station indicates
The ACK of packet.
The present invention has the beneficial effect that:
In technical solution provided in an embodiment of the present invention, due to determine have burst packet reach base station after, at once
Data packet is transmitted in pause base station on a physical layer, and sends burst number in system specified bandwidth in determining OFDM symbol
According to packet, therefore, burst type ultralow time delay data can be supported in the premise for not influencing existing LTE conventional terminal business support
Packet transmission services.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes a part of the invention, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is that LTE data packet transmits schematic diagram in the prior art；
Fig. 2 is the bursty data sending method implementing procedure signal of base station side ultralow time delay business in the embodiment of the present invention
Figure；
Fig. 3 is the bursty data method of reseptance implementing procedure signal of terminal side ultralow time delay business in the embodiment of the present invention
Figure；
Fig. 4 is bearing resource signal of the data packet when controlling symbol transmission time and reaching in the embodiment of the present invention
Figure；
Fig. 5 is bearing resource signal of the data packet when service symbol transmission time reaches in the embodiment of the present invention
Figure；
Fig. 6 is that single OFDM symbol is transferred from the case of the special subframe structured data packet comprising structure in the embodiment of the present invention
Bearing resource schematic diagram；
In the case of special subframe structured data packet of the Fig. 7 for the self-contained structure of multi-OFDM symbol transmission in the embodiment of the present invention
Bearing resource schematic diagram；
Fig. 8 is the bearing resource schematic diagram transmitted in the embodiment of the present invention for fast downlink in the case of ACK feedback signal；
Fig. 9 is the bursty data sending device of base station side ultralow time delay business in the embodiment of the present invention；
Figure 10 is the bursty data reception device of terminal side ultralow time delay business in the embodiment of the present invention；
Figure 11 is architecture of base station schematic diagram in the embodiment of the present invention；
Figure 12 is terminal structure schematic diagram in the embodiment of the present invention.
Specific embodiment
Description of specific embodiments of the present invention with reference to the accompanying drawing.
Inventor during invention note that
Fig. 1 is that LTE data packet transmits schematic diagram, as shown, (Long Term Evolution, is drilled existing LTE for a long time
Into) in the downlink transmission process of system, MAC (Media Access Control, media access control) gives packet data delivery
Physical layer, data packet has to wait for next subframe just and can be carried out to map the data on physical resource to be transmitted, to draw
Enter so-called subframe and waits time delay.For example, T0 moment of the data packet 1 after the transmission of subframe 1 in Fig. 1 submits, but need to wait
It could be sent when being sent to subframe 2, similarly, data packet 2 is also to submit at the T1 moment after the transmission of subframe 1, but need to wait
It could be sent when being sent to subframe 2, that is, even if different at the time of physical layer receives data packet, but also can be under Current Mechanism
It is sent at the time of same.Further, since existing LTE requires the physics occupied after data packet coding on physical resource mapping ruler
Resource must take entire subframe (portion subcarriers in system bandwidth are occupied in frequency) in time, therefore data biography of eating dishes without rice or wine
Defeated time delay is equal to sub-frame interval (LTE sub-frame interval is 1ms).
Existing LTE system carries out data dispatch as unit of subframe, and LTE subframe lengths are 1ms, and therefore, minimum data passes
A length of 1ms when defeated, in order to reduce data transmission duration, there are two kinds of possible schemes.One is subframe lengths are reduced, such as set again
Meter subcarrier spacing and a subframe in include OFDM (Orthogonal Frequency Division Multiplex, just
Hand over frequency division multiplexing) symbol quantity, so that a subframe corresponds to duration and shortens, to reduce data transmission duration.For example, by subframe
Compresses in length is the 1/4 of existing LTE subframe lengths, i.e. 0.25ms.Another scheme is that data are carried out as unit of OFDM symbol
Scheduled transmission, at this point, minimum data conveying length is 1 OFDM symbol, according to the OFDM symbol length computation of existing LTE, one
A OFDM symbol length is 66.67 η s.
For wherein reducing the short subframe scheme of subframe lengths, mainly have the short subframe scheme of the fixation time domain based on LTE with
And the short subframe scheme of fixation frequency domain based on LTE.But for the data packet of the ultralow time delay business reached at random, the program
There is its deficiency, the reason is as follows that:
In the short subframe scheme of fixation time domain based on LTE, certain LTE tradition subframes are occupied time slot configuration in advance by system
At " short subframe " mode, i.e., in short subframe time slot, system is transmitted according to short sub-frame configuration.Fixation time domain based on LTE is short
Subframe scheme is suitble to data packet arrival to have stringent regular ultralow time delay business, the ultralow time delay industry reached at random for data packet
Business is effectively matched since data packet can not be actually reached the moment by system with " short subframe " time slot, causes waiting time delay
Problem.
In the short subframe scheme of fixation frequency domain based on LTE, system is in advance by certain LTE sub-carrier configurations at " short subframe "
Mode, and on particular reserved subcarrier, system is transmitted according to short sub-frame configuration.The short subframe of fixation frequency domain based on LTE
Scheme is suitble to ultrashort time delay portfolio to be evenly distributed on entire time domain, and in the lesser situation of single data packet.For data
Wrap the ultralow time delay business that reaches at random, and portfolio it is very sparse be distributed in entire time domain in the case where, based on LTE's
The fixed short subframe scheme of frequency domain will cause the very big wasting of resources.Furthermore to guarantee under short sub-frame configuration, not to larger data packet into
Row segmentation, the subcarrier amount reserved for " short subframe " mode will be huge.
Since data must be that granularity is transmitted with " subframe " in existing LTE, subframe will be inevitably introduced
Wait time delay and longer data transmission delay of eating dishes without rice or wine.But as described above, using the short subframe side of fixation time domain based on LTE
The main problem of case includes:
When ultralow time delay business meet it is sparse, in the case where sudden arrival rule, since network can not Accurate Prediction number
According to packet arrival time, therefore carves to will lead to short sub-frame configuration time slot mismatch when a data packet arrives and additionally wait time delay.
For using the short subframe scheme of fixation frequency domain based on LTE, need system bandwidth (such as 10,000,000 system bandwidths)
A part of resource dedicated for short sub-frame transmission (such as 2,000,000 system bandwidths), therefore meet in data packet it is sparse, it is sudden to arrive
In the case where rule, the too low problem of single transmission data volume on the one hand will cause, additionally due to ultralow time delay business datum
It is random for wrapping arrival time, therefore for the time slot of no ultralow time delay business data packet arrival, in fact it could happen that system is short
The case where reserved frequency domain resource of sub-frame transmission wastes.
Based on this, to support low time delay business in existing LTE system, the embodiment of the invention provides data packet codings to object
The mapping mode of resource is managed, eats dishes without rice or wine to wait time delay and air interface transmission time delay to reduce.It is provided in an embodiment of the present invention " dynamically from
Include short subframe scheme " in, " transmission of special terminal frame " is carried out after the arrival of actual downstream data packet.It can effectively solve
In short subframe occupancy resource fixed configurations scheme (such as " the short subframe scheme of fixation time domain based on LTE " and " consolidating based on LTE
Determine the short subframe scheme of frequency domain ") supporting the problem sparse, the sudden ultralow time delay transmission belt for reaching business feature is come.
Specifically, downlink ultralow time delay burst packet reaches base station moment, base in the self-contained short subframe scheme of dynamic
Stand the current PDCCH (physical downlink control channel, Physical Downlink Control Channel) of pause or PDSCH
The transmission of (Physical Downlink Shared Channel, physical down link sharing channel), and by one " from packet
Special subframe containing structure " carries out downlink data and quickly transmits." self-contained structure special subframe " occupies one or more in time domain
OFDM symbol occupies whole system bandwidth on frequency domain (in terms of physical resource mapping).
Compared with short subframe occupies resource fixed configurations scheme, " self-contained structure special subframe " may be occupied in this programme
Any time slot and entire frequency domain resource, base station preferentially guarantee ultralow time delay in downlink ultralow time delay burst packet arrival time
Burst packet transmission (including suspending unfinished downlink PDCCH or PDSCH transmission).
It is specifically described below.It in declarative procedure, will be illustrated respectively from the implementation of base station side and terminal side, also
It can illustrate how the two cooperates implementation with example.But this does not imply that the two must cooperate implementation, in fact, when terminal with
When base station is performed separately, also respectively terminal side, base station side are solved the problems, such as, when only the two is used in combination, can obtain more preferable
Technical effect.
For ultralow time delay business, there are no a unified standards for industry at present, but a relatively more extensive common recognition is,
Time delay of eating dishes without rice or wine is lower than 1ms, and business of the end-to-end time delay lower than 5ms can be referred to as ultralow time delay business.Than more typical example
Including tactile internet (Tactile Internet) and Vehicular automatic driving etc..For it is signified ultralow in embodiment when
Prolong business, for the requirement being not only in its time delay, the business be also provided simultaneously with it is sparse, burst the characteristics of.
Fig. 2 is the bursty data sending method implementation process diagram of base station side ultralow time delay business, as shown, can be with
Include:
Step 201 determines have burst packet to reach base station, and the burst packet is generated by ultralow time delay business
, there is paroxysmal data packet；
Data packet is transmitted in step 202, pause base station on a physical layer, and determines that the transmission burst packet need to be in frequency domain
The OFDM symbol occupied in system specified bandwidth；
Step 203 sends the burst packet in determining OFDM symbol in system specified bandwidth.
Fig. 3 is the bursty data method of reseptance implementation process diagram of terminal side ultralow time delay business, as shown, can be with
Include:
Step 301, receive base station transmission data packet after, determine whether the data packet is burst packet, it is described
Burst packet is generated by ultralow time delay business, has paroxysmal data packet；
Step 302, after being determined as the burst packet, handled by the structure of the burst packet, it is described
Structure is that base station is pre-configured with to terminal.
To be existed respectively to base station side and terminal side by example below: data packet is when controlling symbol (PDCCH) transmission
It is carved into the processing reached, the processing that data packet is reached in service symbol (PDSCH) transmission time, the single self-contained structure of OFDM symbol
The processing of special subframe structure, the processing of the special subframe structure of the self-contained structure of multi-OFDM symbol, terminal are to " self-contained structure
The received processing of special subframe ", ACK (Acknowledgement, confirmation) feedback signal occupancy money for fast downlink transmission
The processing in source is illustrated, in declarative procedure, to make the subframe for transmitting burst packet be different from the son used in existing LTE
Frame, short subframe, in embodiment also referred to as " self-contained structure special subframe " to show difference.
Embodiment one
In the present embodiment, if data packet is reached in control symbol (PDCCH) transmission time, processing be can be such that
Base station side: after sending the burst packet using PDCCH, pass through the terminal configuration to be occupied by the PDCCH
EPDCCH terminal is scheduled.
Terminal side: burst packet is from PDCCH reception, according to the scheduling information pair on the ePDCCH configured for terminal
Terminal is scheduled.
Fig. 4 is bearing resource schematic diagram of the data packet when controlling symbol transmission time and reaching, as shown, specifically
In implementation, the effect in the transmission plan based on scheduling, controlling symbol area (carrying PDCCH) is used in existing LTE system
It is responsible for instruction current downlink scheduling information and ascending resource distribution.So if " self-contained structure special subframe " occupies just
Control symbol (PDCCH) occupies resource, and will lead to base station can not be the problem of current subframe dispatches " conventional terminal ".To solve
This problem can configure ePDCCH (Enhanced Physical Downlink Control Channel, enhancing for terminal
Physical Downlink Control Channel) channel, ePDCCH channel is mapped to traditional business symbol area, occupies portion subcarriers resource,
And terminal is scheduled by ePDCCH.
Therefore, when data packet is controlling the case where symbol area (PDCCH) transmission time reaches, base station will stop at control
Symbol area carries out the transmission of PDCCH, and is transmitted by controlling symbol area to " special subframe of self-contained structure ".
After " special subframe of self-contained structure " is transmitted, base station indicates scheduling information by ePDCCH mode.
Embodiment two
In the present embodiment, if data packet is reached in service symbol (PDSCH) transmission time, processing be can be such that
Base station side: when sending the burst packet using PDSCH, pause base station sends data packet on a physical layer is
Suspend the transmission on PDSCH.
Fig. 5 is bearing resource schematic diagram of the data packet when service symbol transmission time reaches, as shown, specifically
In implementation, the effect in the transmission plan based on scheduling, controlling symbol area (carrying PDCCH) is used in existing LTE system
It is responsible for the down dispatch information of instruction current subframe, therefore when data packet is in the arrival of service symbol (PDSCH) transmission time, base
Station is likely to have passed through control symbol (PDCCH) and indicates dispatching distribution to current subframe service symbol (PDSCH).Therefore
" conventional terminal " will receive service symbol (PDSCH) according to control symbol (PDCCH) instruction.In order to realize to " from packet
Containing special subframe " quick transmission, base station is needed in the transmission time pause of " self-contained special subframe " to the biography of traditional PDSCH
It is defeated, in the smaller situation of burst packet data volume and activate in the lower situation of probability, " self-contained special subframe " it is quick
Transmission will not " conventional terminal " data transmission cause to seriously affect.
Embodiment three
In the present embodiment, if single OFDM symbol is transferred from the special subframe structured data packet comprising structure, then processing can
With as follows:
Base station side: when burst packet occupies an OFDM symbol, pass through the control at fixed system bandwidth center or edge
Subcarriers instruction terminal send the burst packet, by business subcarrier send the burst packet coding and
Target terminal mark.
Terminal side: when the burst packet occupies an OFDM symbol, at fixed system bandwidth center or edge
Control subcarrier reception base station send instruction, the coding and target terminal of the burst packet described in business subcarrier reception
Mark, determines whether the data packet is burst packet according to the instruction.
Fig. 6 is the bearing resource signal that single OFDM symbol is transferred from the case of the special subframe structured data packet comprising structure
Figure, as shown, control subcarrier can be configured to occupy fixed several subcarriers, the position of subcarrier in specific implementation
It can be at the center or edge of whole system bandwidth.Business subcarrier occupies remaining sub-carrier resources.Special subframe is configured to
Indicate special subframe instruction.Terminal indicates that information judges that current downlink uses the " spy of self-contained structure according to special subframe
Different subframe " structure.Business sub-carrier portions can be used for carrying the coding of target terminal and data packet.
Example IV
In the present embodiment, if the special subframe structure of the self-contained structure of multi-OFDM symbol transmission, processing be can be such that
Base station side: when burst packet occupies multiple OFDM symbols, pass through the subcarrier instruction terminal transmission for configuration
The burst packet format, by control subcarrier send the burst packet target terminal mark, pass through
Business subcarrier sends the coding of the burst packet.
Terminal side: when the burst packet occupies multiple OFDM symbols, in the subcarrier reception base station for configuration
The instruction of transmission, the mark of the target terminal of the burst packet described in control subcarrier reception, in business subcarrier reception institute
The coding for stating burst packet determines whether the data packet is burst packet and the determining bursty data according to the instruction
The format of packet.
Fig. 7 is the bearing resource signal in the case of the special subframe structured data packet of the self-contained structure of multi-OFDM symbol transmission
Figure, as shown, in specific implementation, herein by taking " self-contained special construction subframe " includes 2 OFDM symbols as an example, to more
Radio resource mapping is illustrated in the case of OFDM symbol.Wherein " special subframe configuration instruction subcarrier " may be used to indicate currently
" format " of the self-contained structure of multi-OFDM symbol, terminal judge whether base station uses according to " special subframe configuration instruction subcarrier "
" special subframe of self-contained structure " is transmitted, and furthermore terminal can judge according to " special subframe configuration instruction subcarrier "
The specific format of " special subframe of self-contained structure ".It is whole that control resource part can be used for carrying the target that downlink data is directed to
End mark, service resources, which have part ownership, carries data packet coding.
Embodiment five
In the present embodiment, terminal receives " self-contained structure special subframe ", then processing can be such that
Since " self-contained special construction subframe " is only used for the transmission service of sudden ultralow time delay business, base station can be with
After terminal activation " sudden ultralow delay " transmission service, configurating terminal trial connects " self-contained special construction subframe "
It receives.And if the mechanism of " self-contained special construction subframe " be it is fixed, base station is by " self-contained special construction subframe "
" format identification (FID) " information configuration is to terminal.
Since being actually reached for burst oriented data packet is random, base station progress " self-contained special construction constantly
The transmission time of frame " be also it is random, be this requires being configured with the terminal of " self-contained special construction subframe " receive capabilities
Each OFDM symbol is attempted to receive according to " self-contained special construction subframe " in entire subframe, terminal can be according to " self-contained
" special subframe configuration instruction subcarrier " in special construction subframe " judges whether previous OFDM symbol uses " self-contained spy
Different structure subframe " is transmitted.If terminal does not detect " special subframe configuration instruction subcarrier ", terminal thinks current
OFDM symbol does not carry out " self-contained special construction subframe " transmission.
Embodiment six
In the present embodiment, resource is occupied for the ACK feedback signal of fast downlink transmission, processing can be such that
Base station side: instruction terminal is directed to the resource of the burst packet feeding back ACK.
Terminal side: feedback is directed to the ACK of the burst packet in the resource of base station instruction.
Fig. 8 is the bearing resource schematic diagram transmitted in the case of ACK feedback signal for fast downlink, as shown, specifically
In implementation, for the reliability for improving downlink transfer, it may be considered that introduce the ACK fast feedback mechanism for being directed to downlink transfer, therefore
It is required to determine that the ACK feedback signal for fast downlink transmission occupies resource, can be indicated by two ways:
1, by carrying the ACK feedback signal occupancy resource instruction letter for local downlink transfer simultaneously in downlink transfer
Breath.
2, the mapping relations at downlink transfer moment with the ACK feedback signal occupancy resource for downlink transfer are established.
Based on the same inventive concept, the bursty data that a kind of ultralow time delay business is additionally provided in the embodiment of the present invention is sent
Device, a kind of bursty data reception device of ultralow time delay business, the principle and one kind solved the problems, such as due to these devices are ultralow
The bursty data sending method of time delay business, a kind of bursty data method of reseptance of ultralow time delay business are similar, therefore these are filled
The implementation set may refer to the implementation of method, and overlaps will not be repeated.
Fig. 9 is the bursty data sending device of base station side ultralow time delay business, as shown, may include:
Determining module 901 has burst packet to reach base station for determining, the burst packet is by ultralow time delay industry
What business generated, there is paroxysmal data packet；
Sending module 902 transmits data packet for suspending base station on a physical layer, and determines and send the burst packet
The OFDM symbol that need to be occupied in frequency domain system specified bandwidth；It is sent out in system specified bandwidth in determining OFDM symbol
Send the burst packet.
In implementation, it can further include:
Indicating module is dispatched, for after sending the burst packet using PDCCH, by be occupied by the PDCCH
Terminal configuration ePDCCH terminal is scheduled.
In implementation, sending module can also be further used for when sending the burst packet using PDSCH, suspend base
Standing and sending data packet on a physical layer is the transmission suspended on PDSCH.
In implementation, when sending module can also be further used for one OFDM symbol of burst packet occupancy, pass through
The burst packet that the control subcarrier instruction terminal at fixed system bandwidth center or edge is sent, is carried by business
Wave sends the coding and target terminal mark of the burst packet；Or, when the burst packet occupies multiple OFDM symbols,
By the format of the burst packet of the subcarrier instruction terminal transmission for configuration, by described in control subcarrier transmission
The mark of the target terminal of burst packet sends the coding of the burst packet by business subcarrier.
In implementation, it can further include:
ACK indicating module is used to indicate the resource that terminal is directed to the burst packet feeding back ACK.
Figure 10 is the bursty data reception device of terminal side ultralow time delay business, as shown, may include:
Receiving module 1001, for determining whether the data packet is burst number after the data packet for receiving base station transmission
According to packet, the burst packet is generated by ultralow time delay business, has paroxysmal data packet；
Processing module 1002, for being carried out by the structure of the burst packet after being determined as the burst packet
Processing, the structure is that base station is pre-configured with to terminal.
In implementation, it can further include:
Scheduler module is used for when from burst packet described in PDCCH reception, according on the ePDCCH configured for terminal
Scheduling information is scheduled terminal.
In implementation, receiving module can also be further used for when the burst packet occupies an OFDM symbol,
The instruction that the control subcarrier reception base station at fixed system bandwidth center or edge is sent, dashes forward described in business subcarrier reception
The coding and target terminal mark for sending out data packet, determine whether the data packet is burst packet according to the instruction；Or, described
When burst packet occupies multiple OFDM symbols, in the instruction of the subcarrier reception base station transmission for configuration, carried in control
Wave receives the mark of the target terminal of the burst packet, the coding of the burst packet described in business subcarrier reception, root
Determine whether the data packet is burst packet and the format for determining the burst packet according to the instruction.
In implementation, it can further include:
ACK module, for feeding back the ACK for being directed to the burst packet in the resource that base station indicates.
For convenience of description, each section of apparatus described above is divided into various modules with function or unit describes respectively.
Certainly, each module or the function of unit can be realized in same or multiple softwares or hardware in carrying out the present invention.
When implementing technical solution provided in an embodiment of the present invention, can implement as follows.
Figure 11 is architecture of base station schematic diagram, as shown, including: in base station
Processor 1100 executes following process for reading the program in memory 1120:
Determining has burst packet to reach base station, and the burst packet is generated by ultralow time delay business, has prominent
The data packet of hair property；
Data packet is transmitted in pause base station on a physical layer, and determines that sending the burst packet need to be what frequency domain was specified
The OFDM symbol occupied on regiment commander's width；
Transceiver 1110 executes following process for sending data under the control of processor 1100:
The burst packet is sent in system specified bandwidth in determining OFDM symbol.
In implementation, after sending the burst packet using PDCCH, further comprise:
By being scheduled for the ePDCCH of the terminal configuration occupied by the PDCCH to terminal.
In implementation, when sending the burst packet using PDSCH, pause base station sends data packet on a physical layer is
Suspend the transmission on PDSCH.
In implementation, when the burst packet occupies an OFDM symbol, pass through fixed system bandwidth center or edge
Control subcarrier instruction terminal send the burst packet, the volume of the burst packet is sent by business subcarrier
Code and target terminal mark；
Or, passing through the subcarrier instruction terminal transmission for configuration when the burst packet occupies multiple OFDM symbols
The burst packet format, by control subcarrier send the burst packet target terminal mark, pass through
Business subcarrier sends the coding of the burst packet.
In implementation, further comprise:
Instruction terminal is directed to the resource of the burst packet feeding back ACK.
Wherein, in Figure 11, bus architecture may include the bus and bridge of any number of interconnection, specifically by processor
The various circuits for the memory that 1100 one or more processors represented and memory 1120 represent link together.Total coil holder
Structure can also link together various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like, this
It is all a bit it is known in the art, therefore, it will not be further described herein.Bus interface provides interface.Transceiver
1110 can be multiple element, that is, include transmitter and transceiver, provide for logical with various other devices over a transmission medium
The unit of letter.Processor 1100 is responsible for management bus architecture and common processing, memory 1120 can store processor 1100
The used data when executing operation.
Figure 12 is terminal structure schematic diagram, as shown, user equipment includes:
Processor 1200 executes following process for reading the program in memory 1220:
After the data packet for receiving base station transmission, determine whether the data packet is burst packet, the bursty data
Packet is generated by ultralow time delay business, has paroxysmal data packet；
It after being determined as the burst packet, is handled by the structure of the burst packet, the structure is base
Station is pre-configured with to terminal；
Transceiver 1210 executes following process for sending data under the control of processor 1200:
Receive the data packet of base station transmission.
In implementation, the burst packet is to further comprise from PDCCH reception:
Terminal is scheduled according to the scheduling information on the ePDCCH configured for terminal.
In implementation, when the burst packet occupies an OFDM symbol, at fixed system bandwidth center or edge
Control subcarrier reception base station send instruction, the coding and target terminal of the burst packet described in business subcarrier reception
Mark, determines whether the data packet is burst packet according to the instruction；
Or, when the burst packet occupies multiple OFDM symbols, in the subcarrier reception base station transmission for configuration
Instruction, control subcarrier reception described in burst packet target terminal mark, described in business subcarrier reception dash forward
The coding for sending out data packet determines whether the data packet is burst packet and the determining burst packet according to the instruction
Format.
In implementation, further comprise: feedback is directed to the ACK of the burst packet in the resource of base station instruction.
Wherein, in Figure 12, bus architecture may include the bus and bridge of any number of interconnection, specifically by processor
The various circuits for the memory that 1200 one or more processors represented and memory 1220 represent link together.Total coil holder
Structure can also link together various other circuits of such as peripheral equipment, voltage-stablizer and management circuit or the like, this
It is all a bit it is known in the art, therefore, it will not be further described herein.Bus interface provides interface.Transceiver
1210 can be multiple element, that is, include transmitter and receiver, provide for logical with various other devices over a transmission medium
The unit of letter.For different user equipmenies, user interface 1230, which can also be, the interface for needing equipment external is inscribed, even
The equipment connect includes but is not limited to keypad, display, loudspeaker, microphone, control stick etc..
Processor 1200, which is responsible for management bus architecture and common processing, memory 1220, can store processor 1200 and exists
Execute used data when operation.
In conclusion providing the rapid data transmission under LTE system in technical solution provided in an embodiment of the present invention
Scheme: after data packet arrival, being transmitted by the way that data envelope to be dressed up to " self-contained structure special subframe ", and " from packet
Special subframe containing structure " transmission time suspends original LTE physical layer control channel and traffic channel transmission.
In base station side, after the downlink data packet that happens suddenly reaches, tradition LTE physical layer transmission is suspended in base station, and use " from
Include structure special subframe " data packet is transmitted, and after " self-contained structure special subframe " is transmitted, restore tradition
LTE transmission.
On terminal side, when receiving to " self-contained structure special subframe ", base station configurating terminal is to " self-contained structure
After special subframe " is received, terminal is attempted to connect by " self-contained structure special subframe " to OFDM symbol each in subframe
It receives, and according to whether receives " special subframe configuration instruction subcarrier " " the self-contained structure spy that judge whether base station is carrying out
Different subframe " transmission.
Using the present invention, burst type can be supported ultralow in the premise for not influencing existing LTE conventional terminal business support
Delay data packet transmission services.Especially suitable for before " burst type ultralow time delay " business is not by large-scale promotion, " burst type is super
In the smaller situation of low time delay " portfolio, supports conventional terminal access simultaneously by existing LTE infrastructure and " burst type is ultralow
Time delay business " can effectively save operator's cost.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The shape for the computer program product implemented in usable storage medium (including but not limited to magnetic disk storage and optical memory etc.)
Formula.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (18)
1. a kind of bursty data sending method of ultralow time delay business characterized by comprising
Determining has burst packet to reach base station, and the burst packet is generated by ultralow time delay business, has sudden
Data packet；
The non-burst packet is transmitted in pause base station on a physical layer, and determines that sending the burst packet need to refer in frequency domain
The orthogonal frequency division multiplex OFDM symbol occupied in fixed system bandwidth；
The burst packet is sent in system specified bandwidth in determining OFDM symbol.
2. the method according to claim 1, wherein the burst packet is using Physical Downlink Control Channel
What PDCCH was sent；
After sending the burst packet using PDCCH, further comprise:
Terminal is adjusted by the Physical Downlink Control Channel ePDCCH of the enhancing for the terminal configuration occupied by the PDCCH
Degree.
3. the method according to claim 1, wherein if the burst packet is using physical down link
What shared channel PDSCH was sent, then:
When sending the burst packet using PDSCH, it is that pause base station exists that pause base station sends data packet on a physical layer
Data packet is sent on PDSCH.
4. the method according to claim 1, wherein leading to when the burst packet occupies an OFDM symbol
The burst packet that the control subcarrier instruction terminal at fixed system bandwidth center or edge is sent is crossed, business is passed through
Carrier wave sends the coding and target terminal mark of the burst packet；
Or, passing through the institute of the subcarrier instruction terminal transmission for configuration when the burst packet occupies multiple OFDM symbols
The format for stating burst packet, the mark for sending the target terminal of the burst packet by controlling subcarrier, passes through business
Subcarrier sends the coding of the burst packet.
5. method according to any one of claims 1 to 4, which is characterized in that further comprise:
Instruction terminal is directed to the resource of the burst packet feedback acknowledgment ACK.
6. a kind of bursty data method of reseptance of ultralow time delay business characterized by comprising
After the data packet for receiving base station transmission, determine whether the data packet is burst packet, the burst packet is
It is generated by ultralow time delay business, there is paroxysmal data packet；
It after being determined as the burst packet, is handled by the structure of the burst packet, the structure is that base station is pre-
First it is allocated to terminal.
7. according to the method described in claim 6, it is characterized in that, the burst packet is from PDCCH reception, further
Include:
Terminal is scheduled according to the scheduling information on the ePDCCH configured for terminal.
8. according to the method described in claim 6, it is characterized in that, the burst packet occupy an OFDM symbol when,
In the instruction that the control subcarrier reception base station at fixed system bandwidth center or edge is sent, described in business subcarrier reception
The coding and target terminal of burst packet identify, and determine whether the data packet is burst packet according to the instruction；
Or, when the burst packet occupies multiple OFDM symbols, in the finger of the subcarrier reception base station transmission for configuration
Show, the mark of the target terminal of the burst packet described in control subcarrier reception, the burst number described in business subcarrier reception
According to the coding of packet, determine whether the data packet is burst packet and the lattice for determining the burst packet according to the instruction
Formula.
9. according to method described in claim 6,7 or 8, which is characterized in that further comprise:
Feedback is directed to the ACK of the burst packet in the resource of base station instruction.
10. a kind of bursty data sending device of ultralow time delay business characterized by comprising
Determining module has burst packet to reach base station for determining, the burst packet is generated by ultralow time delay business
, there is paroxysmal data packet；
Sending module transmits data packet for suspending base station on a physical layer, and determines that the transmission burst packet need to be in frequency
The OFDM symbol occupied in the system specified bandwidth of domain；Described in being sent in system specified bandwidth in determining OFDM symbol
Burst packet.
11. device according to claim 10, which is characterized in that further comprise:
Indicating module is dispatched, for the burst packet is sent using physical downlink control channel PDCCH, used
After PDCCH sends the burst packet, by being adjusted for the ePDCCH of the terminal configuration occupied by the PDCCH to terminal
Degree.
12. device according to claim 10, which is characterized in that if sending module is further used for the bursty data
Packet is sent using physical down link sharing channel PDSCH, then: when sending the burst packet using PDSCH, temporarily
Stop base station to send data packet on a physical layer to be that pause base station sends data packet on PDSCH.
13. device according to claim 10, which is characterized in that sending module is further used for the burst packet and accounts for
When with an OFDM symbol, sent by the control subcarrier instruction terminal at fixed system bandwidth center or edge described prominent
Data packet is sent out, the coding of the burst packet is sent by business subcarrier and target terminal identifies；Or, the bursty data
Packet occupy multiple OFDM symbols when, by for configuration subcarrier instruction terminal transmission the burst packet format,
The mark for sending the target terminal of the burst packet by controlling subcarrier, sends the burst number by business subcarrier
According to the coding of packet.
14. 0 to 13 any device according to claim 1, which is characterized in that further comprise:
ACK indicating module is used to indicate the resource that terminal is directed to the burst packet feeding back ACK.
15. a kind of bursty data reception device of ultralow time delay business characterized by comprising
Receiving module, it is described for determining whether the data packet is burst packet after the data packet for receiving base station transmission
Burst packet is generated by ultralow time delay business, has paroxysmal data packet；
Processing module, it is described for being handled by the structure of the burst packet after being determined as the burst packet
Structure is that base station is pre-configured with to terminal.
16. device according to claim 15, which is characterized in that further comprise:
Scheduler module is used for when from burst packet described in PDCCH reception, according to the scheduling on the ePDCCH configured for terminal
Information is scheduled terminal.
17. device according to claim 15, which is characterized in that receiving module is further used in the burst packet
When occupying an OFDM symbol, in the instruction that the control subcarrier reception base station at fixed system bandwidth center or edge is sent,
The coding and target terminal of the burst packet described in business subcarrier reception identify, and whether determine the data packet according to the instruction
For burst packet；Or, when the burst packet occupies multiple OFDM symbols, in the subcarrier reception base station for configuration
The instruction of transmission, the mark of the target terminal of the burst packet described in control subcarrier reception, in business subcarrier reception institute
The coding for stating burst packet determines whether the data packet is burst packet and the determining bursty data according to the instruction
The format of packet.
18. device described in 5,16 or 17 according to claim 1, which is characterized in that further comprise:
ACK module, for feeding back the ACK for being directed to the burst packet in the resource that base station indicates.
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| WO2018141401A1 (en) * | 2017-02-03 | 2018-08-09 | Nokia Technologies Oy | Uplink resources for ultra-reliable and low latency communication |
| CN106899400B (en) * | 2017-03-01 | 2020-03-24 | 北京天行健联信息技术有限责任公司 | Burst data frame sending method and device |
| CN109217996B (en) | 2017-06-30 | 2021-01-29 | 华为技术有限公司 | Wireless communication method, device and system |
| CN111263445B (en) * | 2018-12-03 | 2023-04-07 | 中国电信股份有限公司 | Service transmission method, device and system and base station |
| CN111491386A (en) * | 2019-01-28 | 2020-08-04 | 普天信息技术有限公司 | Method and device for reducing service delay in wireless communication system |
| WO2024159538A1 (en) * | 2023-02-03 | 2024-08-08 | 北京小米移动软件有限公司 | Radio frame transmission method, electronic device, and storage medium |
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