CN103457708B - Data transmission method and device - Google Patents
Data transmission method and device Download PDFInfo
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- CN103457708B CN103457708B CN201210183173.2A CN201210183173A CN103457708B CN 103457708 B CN103457708 B CN 103457708B CN 201210183173 A CN201210183173 A CN 201210183173A CN 103457708 B CN103457708 B CN 103457708B
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Abstract
The invention discloses a kind of data transmission method and device, this method includes：Occupied first running time-frequency resource when determining using TTI Bundling enhancing transmission mode transmission datas, wherein, first running time-frequency resource occupied second running time-frequency resource when being transmitted using TTIBundling transmission modes including at least the data, and the RTT of TTI Bundling enhancing transmission modes is less than or equal to the RTT of TTI Bundling transmission modes；Transmission mode transmission data is enhanced by TTI Bundling on the first running time-frequency resource.Through the invention, the coding efficiency of data transmission is improved.
Description
Technical field
The present invention relates to the communications fields, in particular to a kind of data transmission method and device.
Background technology
Power system capacity and the network coverage are two important performance indicators of mobile radio system.For example, long-term
Evolution（Long Term Evolution, referred to as LTE）In system, downlink uses orthogonal frequency-time multiple access
（Orthogonal Frequency Division Multiple Access, referred to as OFDMA）Technology, uplink use list
Carrier-Frequency Division multiple access accesses（Single Carrier-Frequency Division Multiple Access, referred to as SC-
FDMA）Technology, but due to generally using identical frequency process networking, inter-cell interference（Inter-Cell Interference, referred to as
For ICI）Increase apparent.In order to reduce ICI, LTE uses many Anti-Jamming Techniques.
In terms of power management, downlink inter-cell interference cancellation（Inter-Cell Interference
Cancellation, referred to as ICIC）Technology is based on evolution node B（Evolved Node B, referred to as eNodeB）It is opposite
Narrow emission power（Relative Narrowband TX Power, referred to as RNTP）The method of limitation realizes that downlink interference is pre-
First prompting function enhances physical down Traffic Channel（Physical Downlink Shared Channel, referred to as
PDSCH）Covering performance；Uplink ICIC technologies are based on（High Interference Indication/Overload
Indication, referred to as HII/OI）Method realize interference instruction and load instruction, enhance physical uplink Traffic Channel
（Physical Uplink Shared Channel, referred to as PUSCH）Covering performance.
In channel coding（Channel Coding）Aspect, LTE use high performance Turbo code and tail-biting convolutional code,
Enable data to resist the various declines of channel.For Turbo code, for the resource block structures of LTE system, devise efficiently
Interleaver and rate-matched function.
In multiple-input and multiple-output（Multiple Input Multiple Output, referred to as MIMO）Aspect, MIMO skills
Art is by space diversity, and spatial reuse and beam forming technique can also improve the covering performance and volumetric properties of LTE system, especially
The cooperative multi-point to be grown up based on MIMO technology（Coordinated Multiple Point, referred to as CoMP）Technology.But
Due in current network and following a period of time, terminal（User Equipment, referred to as UE）It is that single antenna is sent, MIMO
Technology and CoMP technologies are limited for the improvement of uplink, can only be received by the joint of receiving terminal（Joint Receiver, referred to as
For JR）Improved.
Although there are the transmission performance that numerous technologies can improve system, especially network covering property in LTE system,
Confirm PUSCH when moderate rate by network test and software emulation, PDSCH and VoIP business when high-speed is still
The limited channel of covering performance in each channel in LTE system.Wherein main reason is that：The transmission power of UE is limited to be caused
Etc. rates PUSCH and VoIP it is limited, and the ICI between base station causes the PDSCH of high-speed limited.LTE system introduces thus
Transmission Time Interval（Transmission Time Interval, referred to as TTI）Binding（Bundling）Technology.TTI
Bundling technologies form different redundancy versions by channel coding to entire data packet, and different redundancy versions are respectively even
It is transmitted in continuous TTI, TTI Bundling technologies obtain coding gain and diversity gain by the more transfer resources of occupancy,
To obtain higher reception energy and link signal-to-noise ratio, so as to improve the covering power of LTE system.
For example, transmitting schematic diagram as shown in Figure 1 for TTI Bundling, the business of transmission is with voice（VoIP）For.UE
First VoIP packet physically carry out the 1st time on 4 continuous Transmission Time Intervals of the shared channel PUSCH of row and transmit, 4
A continuous TTI is referred to as a TTI binding length（TTI Bundling Size）For 4 TTI Bundling, TTI
The control information of Bundling transmission（For example, resource location etc.）By in the corresponding TTI of first TTI in TTI Bundling
Down control channel PDCCH instructions, receiving terminal（Such as base station）After receiving the TTI Bundling, in TTI Bundling most
The corresponding downlink physical HARQ instruction channels PHICH of the latter TTI（Physical HARQ Indication Channel, letter
Referred to as PHICH）Upper instruction hybrid automatic repeat-request（Hybrid Automatic Repeat Request, referred to as HARQ）
The ack/nack of entity（Acknowledge/Non-Acknowledge, referred to as ACK/NACK）Response message, if accordingly
Response is the NACK responses of negative, and UE carries out 2 TTI Bundling transmission after 16 TTI（That is the TTI Bundling's
It retransmits for the first time）, HARQ mechanism is identical as first time transmission principle.And so on, until respective acknowledgement be certainly ACK responses,
Or the maximum trial the number of transmissions allowed is reached（For example, 3 times）, first VoIP packet transmission ending.Similarly, n-th
The transmission of VoIP packets is identical as first VoIP packet transmission principle, repeats no more.In round-trip（Round Transmission
Time, RTT）For 16ms when, when each VoIP packets transmit 3 times in a manner of the TTI Bundling of Size=4 TTI Bundling,
Time delay is 36ms, and it is then 52ms to transmit 4 times, such as shown in Figure 2.VoIP is the real time business of delay sensitive, time delay of eating dishes without rice or wine one
As be less than 50ms, so according to end terminal delay time require and system features, scheduler determine actual HARQ transmission times be 3
It is secondary or 4 times.
For existing TTI Bundling, the HARQ versions that can at most send are 12 or 16, when corresponding to transmission
Prolong as 36ms or 52ms, and the arrival interval of VoIP is 20ms, so, theoretically there is enhancing space.For example, TTI
It is 5, RTT is 8ms or 12ms that Bundling Size, which are 4, HARQ maximum times, and corresponding propagation delay time is 36ms and 52ms, but
20 HARQ versions can be sent, realize more energy accumulations.Alternatively, TTI Bundling Size are 5, HARQ maximum
Number is 4, RTT 15ms, and corresponding propagation delay time is 50ms, can also send 20 HARQ versions, realizes that more energy are tired
Product.But these enhanced schemes all disadvantages, change RTT, that is, change the timing of HARQ, very big on existing system influence,
It is unable to forward compatibility.
The problem of can not achieve backward compatibility for the enhancing transmission of TTI Bundling in the related technology, not yet proposes at present
Effective solution scheme.
Invention content
The problem of can not achieve backward compatibility for TTI Bundling enhancing transmission, the present invention provides a kind of data biographies
Transmission method and device, at least to solve the problems, such as this.
According to an aspect of the invention, there is provided a kind of data transmission method, including：It determines and uses Transmission Time Interval
Bundle occupied first running time-frequency resource when TTI Bundling enhancing transmission mode transmission datas, wherein first time-frequency
Resource occupied second running time-frequency resource when being transmitted using TTI Bundling transmission modes including at least the data, and
The round-trip RTT of the TTIBundling enhancings transmission is less than or equal to the RTT of TTI Bundling transmission；Described
Transmission mode transmission data is enhanced by TTI Bundling on first running time-frequency resource.
Preferably, the RTT refers to the time domain interval of two continuous Transmission Time Interval binding TTI Bundle.
Preferably, the physical mixed automatic repeat request in the TTI Bundling enhancings transmission mode indicates channel
The time-domain position of PHICH is identical as the time-domain position of PHICH in the TTI Bundling transmission modes.
Preferably, the time domain position of the physical downlink control channel PDCCH in the TTI Bundling enhancings transmission mode
It sets identical as the time-domain position of PDCCH in the TTI Bundling transmission modes.
Preferably, the TTI Bundling transmission modes carry out data transmission reaching occupies when maximum transmission times
TTI is 12 or 16, and the TTI Bundling enhancings transmission mode occupies when carrying out data transmission reaching maximum transmission times
TTI be 20.
Preferably, 12 or 16 TTI in occupied 20 TTI of TTI Bundling enhancing transmission mode when
Domain position is identical as the occupied time-domain position of 12 or 16 TTI of the TTI Bundling transmission modes.
Preferably, the corresponding the number of transmissions of 12 and 16 TTI of the TTI Bundling transmission modes occupancy is respectively
The corresponding the number of transmissions of 3 and 4, occupied 20 TTI of the TTI Bundling enhancing transmission modes is 4.
Preferably, the corresponding the number of transmissions of occupied 20 TTI of the TTI Bundling enhancing transmission modes is 4
When, the TTI Bundle sizes transmitted for the first time, for the second time, for the third time are 4 TTI, and the TTI Bundle of the 4th transmission are
Two length are the TTI Bundle of 4 TTI, or are TTI Bundle that a length is 8 TTI.
Preferably, the TTI Bundle of the 4th transmission correspond to 1 PHICH, or corresponding 0 PHICH.
Preferably, the TTI Bundle of the 4th transmission correspond to 0,1 or 2 PDCCH channel.
Preferably, when the TTI Bundle of described 4th time transmission correspond to 0 PDCCH channel, the 4th transmission
TTI Bundle scheduling information pass through for the first time, second or this third time transmit corresponding PDCCH instructions；Work as institute
When stating TTI Bundle 1 PDCCH channel of correspondence of the 4th transmission, preceding 4 TTI of 8 TTI in the 4th transmission
Scheduling information by for the first time, second or this third time transmit corresponding PDCCH and indicate, latter 4 of 8 TTI
The scheduling information of TTI is indicated by the corresponding PDCCH of rear 4 TTI, or is indicated by the corresponding PDCCH of last 8 TTI；When
When the TTI Bundle of 4th transmission correspond to 2 PDCCH channels, in the 4th transmission in 8 TTI preceding 4
The scheduling information of a TTI indicated by the corresponding PDCCH of preceding 4 TTI, the scheduling information of rear four TTI in 8 TTI
Pass through the corresponding PDCCH instructions of rear 4 TTI.
Preferably, the length of the TTI Bundle of the TTI Bundling enhancings transmission mode is 4 or 8, the TTI
The length of the TTI Bundle of Bundling transmission modes is 4.
Preferably, the RTT of the TTI Bundling transmission modes is 16ms, and the TTI Bundling enhance transmission side
The RTT of most latter two TTI Bundle in formula is 12ms, and the RTT between other TTI Bundle is 16ms.
According to another aspect of the present invention, a kind of data transmission device is provided, including：Determining module is adopted for determination
Occupied first running time-frequency resource when with Transmission Time Interval binding TTI Bundling enhancing transmission mode transmission datas,
In, first running time-frequency resource is occupied when being transmitted using TTI Bundling transmission modes including at least the data
Second running time-frequency resource, and the round-trip RTT of TTI Bundling enhancing transmission modes is less than or equal to the TTI
The RTT of Bundling transmission modes；Transmission module, for passing through TTI Bundling enhancing transmission on first running time-frequency resource
Mode transmission data.
Preferably, the physical mixed automatic repeat request instruction channel PHICH in the TTI Bundling enhancings transmission
Time-domain position it is identical as the time-domain position that the TTI Bundling are transmitted.
Preferably, more increased more compared with the TTI Bundling are transmitted in the TTI Bundling enhancings transmission
The scheduling information of a TTI is identical as the scheduling information that the TTI Bundling are transmitted or controls letter by new physical down
Road PDCCH is indicated.
Preferably, the TTI Bundling transmission modes carry out data transmission reaching occupies when maximum transmission times
TTI is 12 or 16, and the TTI Bundling enhancings transmission mode carries out data transmission reaching maximum transmission times occupancy
TTI is 20.
Preferably, the length of the TTI Bundle of the TTI Bundling enhancings transmission mode is 4 or 8, the TTI
The length of the TTI Bundle of Bundling transmission modes is 4.
Preferably, the RTT of the TTI Bundling transmission modes is 16ms, and the TTI Bundling enhance transmission side
The RTT of most latter two TTI Bundle in formula is 12ms, and the RTT between other TTI Bundle is 16ms.
Through the invention, transmitting the first running time-frequency resource carried out data transmission using progress TTI Bundling enhancings includes
The backward compatibility of TTI Bundling may be implemented in the second running time-frequency resource that the data are transmitted by TTI Bundling, meanwhile,
Since the RTT between the TTI Bundling of TTIBundling enhancing transmission is less than or equal to the TTI Bundling transmission
RTT between TTIBundling can be spaced the interior more TTI Bundling of transmission at the same time, improve
Coding gain can improve the covering power of system to a certain extent.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and is constituted part of this application, this hair
Bright illustrative embodiments and their description are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is to bundle transmission schematic diagram one according to the time interval of the relevant technologies；
Fig. 2 is the flow chart of data transmission method according to the ... of the embodiment of the present invention；
Fig. 3 is the structure diagram of data transmission device according to the ... of the embodiment of the present invention；
Fig. 4 is time interval binding transmission schematic diagram two according to the ... of the embodiment of the present invention；
Fig. 5 is time interval binding enhancing transmission schematic diagram one according to the ... of the embodiment of the present invention；
Fig. 6 is time interval binding enhancing transmission schematic diagram two according to the ... of the embodiment of the present invention；
Fig. 7 is time interval binding enhancing transmission schematic diagram three according to the ... of the embodiment of the present invention；
Fig. 8 is time interval binding enhancing transmission schematic diagram four according to the ... of the embodiment of the present invention；
Fig. 9 is time interval binding enhancing transmission schematic diagram five according to the ... of the embodiment of the present invention；And
Figure 10 is time interval binding enhancing transmission schematic diagram six according to the ... of the embodiment of the present invention.
Specific implementation mode
Come that the present invention will be described in detail below with reference to attached drawing and in conjunction with the embodiments.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
A kind of data transmission method is present embodiments provided, Fig. 2 is data transmission method according to the ... of the embodiment of the present invention
Flow chart, including following step S202 to step S204.
Step S202：Occupied first time-frequency money when determining using TTI Bundling enhancing transmission mode transmission datas
Source, wherein first running time-frequency resource is occupied when being transmitted using TTI Bundling transmission modes including at least the data
The second running time-frequency resource, and the RTT of TTI Bundling enhancing transmission modes is less than or equal to the transmission sides TTI Bundling
The RTT of formula；
Step S204：Transmission mode transmission data is enhanced by TTI Bundling on the first running time-frequency resource.
Through the above steps, the first running time-frequency resource that data carry out TTI Bundling enhancing transmission includes the data（Such as
Fruit）The backward compatibility of TTI Bundling may be implemented in the second running time-frequency resource transmitted by TTI Bundling, meanwhile, by
RTT between the TTI Bundling of TTIBundling enhancing transmission is less than or equal to the TTI Bundling transmission
RTT between TTIBundling can so that the more TTI Bundling of transmission in interval, improve at the same time
Coding gain can improve the covering power of system to a certain extent.
The so-called backward compatibility is needed to include：One transmitting terminal may be used TTI Bundling enhancing transmission mode or
TTIBundling transmission modes, if enhance transmission mode transmission data using TTI Bundling, transmitting terminal confirms TTI
Bundling enhances the part in the running time-frequency resource of transmission mode and is centainly occupied with according to TTI Bundling transmission modes
Running time-frequency resource it is identical, at least time-domain position is identical, to ensure transmitting terminal can use identical strategy, such as
The sending strategy of PDCCH and PHICH.It is similar with transmitting terminal when receiving for receiving terminal, it repeats no more.
In the present embodiment, RTT refers to the time domain interval of two continuous Transmission Time Interval binding TTIBundle.
When implementing, in order to improve the backwards compatibility of data transmission, TTI Bundling enhance the PHICH's in transmission
Time-domain position is identical as the time-domain position of the TTI Bundling transmission, and in the preferred embodiment, TTI Bundling enhancings pass
The timing mechanism of defeated PHICH and the timing mechanism of TTI Bundling are constant, while reducing the complexity of configuration.
In order to improve scheduling consistency, the time-domain position of the PDCCH in TTI Bundling enhancing transmission modes with
The time-domain position of PDCCH in TTIBundling transmission modes is identical.
Carry out data transmission reaching maximum transmitted time as preferably embodiment, a TTI Bundling transmission mode
The TTI occupied when number is 12 or 16, and TTI Bundling enhancings transmission mode carries out data transmission reaching maximum transmission times
The TTI of Shi Zhanyong is 20.
In order to realize backward compatibility and reduce the complexity of configuration, TTI Bundling enhance transmission mode occupied 20
The time domain of the time-domain position and occupied 12 or 16 TTI of TTI Bundling transmission modes of 12 or 16 TTI in a TTI
Position is identical.
Preferably, the corresponding the number of transmissions of 12 and 16 TTI that TTI Bundling transmission modes occupy is respectively 3 and 4,
It is 4 that TTIBundling, which enhances the corresponding the number of transmissions of occupied 20 TTI of transmission mode,.It is passed in TTI Bundling enhancings
When the corresponding the number of transmissions of defeated occupied 20 TTI of mode is 4, for the first time, second, the TTI Bundle of third time transmission
Size is 4 TTI, and the TTI Bundle of the 4th transmission are the TTI Bundle that two length are 4 TTI, or is one
Length is the TTI Bundle of 8 TTI.In order to realize that the flexibility of timing mechanism, the TTI Bundle of the 4th transmission correspond to
One PHICH or corresponding 0 PHICH.
Preferably, the TTI Bundle of the 4th transmission correspond to 0,1 or 2 PDCCH channel.
Three kinds of situations of the TTI Bundle transmitted corresponding to above-mentioned 4th time, may be used different scheduling modes and refer to
Show：
Such as：When the TTI Bundle of the 4th transmission correspond to 0 PDCCH channel, the TTI of the 4th transmission
The scheduling information of Bundle is indicated by PDCCH for the first time, for the second time or corresponding to this third time transmission.
When the TTI Bundle of the 4th transmission correspond to 1 PDCCH channel, in the 4th transmission before 8 TTI
The scheduling information of 4 TTI transmits corresponding PDCCH instructions by first time, second or this third time, 8 TTI's
The scheduling information of 4 TTI is indicated by the corresponding PDCCH of rear 4 TTI afterwards, or is referred to by the corresponding PDCCH of last 8 TTI
Show.
When the TTI Bundle of the 4th transmission correspond to 2 PDCCH channels, in the 4th transmission in 8 TTI
The scheduling information of preceding 4 TTI indicated by the corresponding PDCCH of preceding 4 TTI, the scheduling of rear four TTI in 8 TTI
Information is indicated by the corresponding PDCCH of rear 4 TTI.
In order to realize the compatibility of system, the length of the TTI Bundle of TTI Bundling enhancing transmission modes be 4 or
The Bundling Size of 8, TTIBundling transmission are 4.It should be noted that the difference with communication protocol develops, TTI
Size can become according to agreement used by the Bundling Size of Bundling enhancings transmission and the TTI Bundling transmission
Change and changes.
Preferably, the RTT of the TTI Bundling transmission modes is 16ms, in the TTI Bundling enhancing transmission modes
The RTT of most latter two TTI Bundle be 12ms, the RTT between other TTI Bundle is 16ms.The preferred embodiment is real
The multiple TTI Bundling transmission at same time interval is showed.
It should be noted that step shown in the flowchart of the accompanying drawings can be in such as a group of computer-executable instructions
It is executed in computer system, although also, logical order is shown in flow charts, and it in some cases, can be with not
The sequence being same as herein executes shown or described step.
In another embodiment, a kind of data transmission software is additionally provided, the software is for executing above-described embodiment
And the technical solution described in preferred embodiment.
In another embodiment, a kind of storage medium is additionally provided, above-mentioned data are stored in the storage medium and are passed
Defeated software, the storage medium include but not limited to：CD, floppy disk, hard disk, scratch pad memory etc..
The embodiment of the present invention additionally provides a kind of data transmission device, which can be used to implement above-mentioned number
According to transmission method and preferred embodiment, explanation was carried out, had been repeated no more, below to involved in the data transmission device
To module illustrate.As used below, the software of predetermined function and/or the group of hardware may be implemented in term " module "
It closes.Although system and method described in following embodiment are preferably realized with software, hardware or software and hardware
The realization of combination be also that may and be contemplated.
Fig. 3 is the structure diagram of data transmission device according to the ... of the embodiment of the present invention, which includes：Determining module 32,
Transmission module 34, is below described in detail above structure.
Determining module 32 transmits number for determining using Transmission Time Interval binding TTI Bundling enhancing transmission modes
According to when occupied first running time-frequency resource, wherein first running time-frequency resource is included at least the data and is passed using TTI Bundling
Defeated mode occupied second running time-frequency resource when being transmitted, and the round-trip of TTI Bundling enhancing transmission modes（RTT）
Less than or equal to the RTT of TTI Bundling transmission modes；Transmission module 34 is connected to determining module 32, for determining mould
Transmission mode transmission data is enhanced by TTI Bundling on the first running time-frequency resource that block 32 determines.
In the present embodiment, RTT refers to the time domain interval of two continuous Transmission Time Interval binding TTI Bundle.
When implementing, in order to improve the backwards compatibility of data transmission, TTI Bundling enhance the PHICH's in transmission
Time-domain position is identical as the time-domain position of the TTI Bundling transmission, and in the preferred embodiment, TTI Bundling enhancings pass
The timing mechanism of defeated PHICH and the timing mechanism of TTI Bundling are constant, while reducing the complexity of configuration.
In order to improve scheduling consistency, the time-domain position and TTI of the PDCCH in the TTI Bundling enhancing transmission modes
The time-domain position of PDCCH in Bundling transmission modes is identical.
Carry out data transmission reaching maximum transmitted time as preferably embodiment, a TTI Bundling transmission mode
The TTI occupied when number is 12 or 16, and TTI Bundling enhancings transmission mode carries out data transmission reaching maximum transmission times
The TTI of Shi Zhanyong is 20.
In order to realize backward compatibility and reduce the complexity of configuration, TTI Bundling enhance transmission mode occupied 20
The time domain of the time-domain position and occupied 12 or 16 TTI of TTI Bundling transmission modes of 12 or 16 TTI in a TTI
Position is identical.
Preferably, the corresponding the number of transmissions of 12 and 16 TTI that TTI Bundling transmission modes occupy is respectively 3 and 4,
It is 4 that TTIBundling, which enhances the corresponding the number of transmissions of occupied 20 TTI of transmission mode,.It is passed in TTI Bundling enhancings
When the corresponding the number of transmissions of defeated occupied 20 TTI of mode is 4, for the first time, second, the TTI Bundle of third time transmission
Size is 4 TTI, and the TTI Bundle of the 4th transmission are the TTI Bundle that two length are 4 TTI, or is one
Length is the TTI Bundle of 8 TTI.In order to realize that the flexibility of timing mechanism, the TTI Bundle of the 4th transmission correspond to
One PHICH or corresponding 0 PHICH.
Preferably, the TTI Bundle of the 4th transmission correspond to 0,1 or 2 PDCCH channel.
Three kinds of situations of the TTI Bundle transmitted corresponding to above-mentioned 4th time, may be used different scheduling modes and refer to
Show：
Such as：When the TTI Bundle of the 4th transmission correspond to 0 PDCCH channel, the TTI of the 4th transmission
The scheduling information of Bundle is indicated by PDCCH for the first time, for the second time or corresponding to this third time transmission.
When the TTI Bundle of the 4th transmission correspond to 1 PDCCH channel, in the 4th transmission before 8 TTI
The scheduling information of 4 TTI transmits corresponding PDCCH instructions by first time, second or this third time, 8 TTI's
The scheduling information of 4 TTI is indicated by the corresponding PDCCH of rear 4 TTI afterwards, or is referred to by the corresponding PDCCH of last 8 TTI
Show.
When the TTI Bundle of the 4th transmission correspond to 2 PDCCH channels, in the 4th transmission in 8 TTI
The scheduling information of preceding 4 TTI indicated by the corresponding PDCCH of preceding 4 TTI, the scheduling of rear four TTI in 8 TTI
Information is indicated by the corresponding PDCCH of rear 4 TTI.
In order to realize the compatibility of system, the length of the TTI Bundle of TTI Bundling enhancing transmission modes be 4 or
The Bundling Size of 8, TTIBundling transmission are 4.It should be noted that the difference with communication protocol develops, TTI
Size can become according to agreement used by the Bundling Size of Bundling enhancings transmission and the TTI Bundling transmission
Change and changes.
Preferably, the RTT of the TTI Bundling transmission modes is 16ms, in the TTI Bundling enhancing transmission modes
The RTT of most latter two TTI Bundle be 12ms, the RTT between other TTI Bundle is 16ms.The preferred embodiment is real
The multiple TTI Bundling transmission at same time interval is showed.
It is illustrated below in conjunction with preferred embodiment, preferred embodiment below combines above-described embodiment and preferred implementation
Mode.
Preferred embodiment one
This preferred embodiment provides a kind of TTI Bundling enhancing transmission methods of backward compatibility, is propped up in communication system
Hold TTI Bundling transmission and TTI Bundling enhancing transmission.This method includes：TTI Bundling enhancing transmission occupies
Running time-frequency resource include running time-frequency resource that TTI Bundling transmission occupies completely.
In the preferred embodiment, the TTI numbers occupied are transmitted as preferably embodiment, a TTI Bundling
It is 12 or 16 for M, M, the TTI numbers that TTI Bundling enhancing transmission occupies are 20 that 20, Bundling enhancing transmission occupies
The time-domain position of M TTI in a TTI is identical as the M TTI that TTI Bundling transmission occupies.
When implementing, in order to enhance the flexibility of scheduling, increased 20-M TTI in TTI Bundling enhancing transmission
Scheduling information is identical as remaining M, or is indicated by new PDCCH.
In order to realize backward compatibility, the time-domain position and TTI of the PHICH in TTI Bundling enhancing transmission
The time-domain position of the PHICH of Bundling is identical.That is, the timing mechanism of the PHICH in TTI Bundling enhancing transmission with
The timing mechanism of TTI Bundling is identical.
It is 4 as preferably embodiment, a Bundling Size that TTI Bundling enhance transmission, removes last
The RTT between TTIBundling is outside 12ms twice, remaining arbitrarily twice RTT between TTI Bundling is 16ms.
Preferred embodiment two
Present embodiments provide a kind of TTI Bundling enhancings transmission method, in the present embodiment, time interval binding
In multiple TTI can not always be continuous.
In Fig. 1, RTTs of the Bundling Size of TTI Bundling enhancings transmission between 4, TTI Bundling
For 16ms, it is contemplated that the time delay of eating dishes without rice or wine of VoIP is no more than 50ms, then carries out 3 HARQ transmissions, transmit 12 HARQ versions.In order to
Transmission performance is further enhanced, transmits 20 HARQ versions in Fig. 5 altogether.
The method of this preferred embodiment includes：The preceding Bundling of TTI three times transmission is identical with Fig. 1, enhancing transmission
RTTs of the Bundling Size between 4, TTI Bundling be 16ms, the PHICH and PDCCH of HARQ feedback and 1 are completely
It is identical, the difference is that increasing the 4th TTI Bundling transmission, RTT 12ms.The frequency of the 4th TTI Bundling transmission
The information such as domain position, resource quantity can with it is preceding three times in it is any primary identical.
Preferably, the 4th TTI Bundling transmission is transmitted as last time, and PHICH can not also be sent.For branch
It holds TTI Bundling enhancings transmission and the TTI Bundling enabled enhances for the receiving terminal of transmission, it is only necessary to according to
Above-mentioned rule goes reception.
Preferred embodiment three
Present embodiments provide a kind of TTI Bundling enhancings transmission method, in the present embodiment, time interval binding
In multiple TTI can not always be continuous.
This preferred embodiment and preferred embodiment two difference lies in：The tune of increased the 4th TTI Bundling transmission
Information is spent to indicate by new PDCCH.Wherein, in Fig. 6, when time-domain position and RTT=16 of PDCCH are the PDCCH for needing to send
Domain position is identical, and compatibility is more preferable；In Fig. 7, time-domain position and the RTT=12 of PDCCH need the PDCCH time-domain position phases sent
Together.
Preferred embodiment four
This preferred embodiment provides a kind of TTI Bundling enhancings transmission method, excellent to this with reference to Fig. 4 and Fig. 8
The method for selecting embodiment illustrates.
In Fig. 4, RTTs of the Bundling Size of TTI Bundling enhancings transmission between 4, TTI Bundling
For 16ms.The time delay of eating dishes without rice or wine of VoIP is relaxed to 52ms, then carries out 4 HARQ transmissions, transmits 16 HARQ versions.In order into one
Step enhances transmission performance, and 20 HARQ versions are transmitted altogether in Fig. 5.
The method of this preferred embodiment includes：Remain four TTI Bundling transmission in Fig. 4, and PDCCH and
The transmission of PHICH is identical.But TTI Bundling enhancings transmission has sent one again before the 4th TTI Bundling transmission
The TTI Bundling that BundlingSize is 4.The information such as frequency domain position, the resource quantity of increased TTI Bundling transmission
Can with it is preceding three times in it is any primary identical.
Preferably, as last transmission, PHICH can not also send for the 4th TTI Bundling transmission, or with the
1 PHICH is shared in 4 TTI Bundling transmission.Support TTI Bundling enhancings are transmitted and enabled
For the receiving terminal of TTIBundling enhancing transmission, it is only necessary to go reception according to above-mentioned rule.
Preferred embodiment five
This preferred embodiment provides a kind of TTI Bundling enhancings transmission method, with reference to Fig. 9 and Figure 10 to this
The method of preferred embodiment illustrates.
This preferred embodiment and preferred embodiment four difference lies in：The frequency domain position of increased TTI Bundling transmission
It sets, the information such as resource quantity pass through new PDCCH instructions.Wherein, in Fig. 9, time-domain position and RTT=12 of PDCCH need to send
PDCCH time-domain positions it is identical, increased TTI Bundling transmission shares the same PDCCH with the 4th Bundling transmission,
More save expense.In Figure 10, the time-domain position of PDCCH needs the PDCCH time-domain positions sent identical with RTT=12.
It should be noted that the number designation in the attached drawing of above preferred embodiment identifies in the TTI Bundle not
The corresponding control information with the TTI and TTI.
Preferably, the transmitting terminal in this preferred embodiment can be the equipment such as base station, Home eNodeB, relay station, can also
It is communication terminal, laptop, handheld computer etc..Similarly, receiving terminal is used to receive the data-signal of transmitting terminal, receiving terminal
It can be the terminal devices such as mobile phone, laptop, handheld computer, can also be base station, the control devices such as relay station.
By above-described embodiment, a kind of data transmission method and device are provided, realizes data TTI Bundling's
Backward compatibility, and the coding gain of data transmission is improved, and the covering power of system is improved to a certain extent.It needs
Bright, these technique effects are not possessed by above-mentioned all embodiments, some have the technical effect that certain preferred realities
What the mode of applying could obtain.
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, so as to be stored in
It is performed by computing device in storage device, either they are fabricated to each integrated circuit modules or will be in them
Multiple modules or step be fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hard
Part and software combine.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (19)
1. a kind of data transmission method, it is characterised in that including：
When determining using occupied first when Transmission Time Interval binding TTI Bundling enhancing transmission mode transmission datas
Frequency resource, wherein first running time-frequency resource is passed including at least the data according to TTI Bundling transmission modes
Occupied second running time-frequency resource when defeated, and the round-trip RTT of TTI Bundling enhancing transmission modes is less than or equal to
The RTT of the TTI Bundling transmission modes；
Transmission mode transmission data is enhanced by TTI Bundling on first running time-frequency resource.
2. according to the method described in claim 1, it is characterized in that, the RTT refers to two continuous Transmission Time Interval bundles
Tie up the time domain interval of TTI Bundle.
3. according to the method described in claim 1, it is characterized in that, the TTI Bundling enhance the physics in transmission mode
The time-domain position of hybrid automatic request retransmission indicating chanel PHICH is with the PHICH's in the TTI Bundling transmission modes
Time-domain position is identical.
4. according to the method described in claim 1, it is characterized in that, the TTI Bundling enhance the physics in transmission mode
The time-domain position of down control channel PDCCH is identical as the time-domain position of PDCCH in the TTI Bundling transmission modes.
5. according to the method described in claim 1, it is characterized in that, the TTI Bundling transmission modes carry out data transmission
It is 12 or 16 to reach the TTI occupied when maximum transmission times, and the TTI Bundling enhancings transmission mode carries out data biography
The defeated TTI occupied when maximum transmission times that reaches is 20.
6. according to the method described in claim 5, it is characterized in that, TTI Bundling enhancings transmission mode is occupied
The time-domain position of 12 or 16 TTI in 20 TTI and occupied 12 or 16 TTI of the TTI Bundling transmission modes
Time-domain position it is identical.
7. according to the method described in claim 5, it is characterized in that, the 12 and 16 of TTI Bundling transmission modes occupancy
The corresponding the number of transmissions of a TTI is respectively 3 and 4, and occupied 20 TTI of the TTI Bundling enhancings transmission mode are corresponded to
The number of transmissions be 4.
8. the method according to the description of claim 7 is characterized in that TTI Bundling enhancings transmission mode is occupied
When the corresponding the number of transmissions of 20 TTI is 4, the TTI Bundle sizes transmitted for the first time, for the second time, for the third time are 4 TTI,
The TTI Bundle of 4th transmission are TTI Bundle that two length are 4 TTI, or for a length are 8 TTI
TTI Bundle。
9. according to the method described in claim 8, it is characterized in that, the TTI Bundle of the 4th transmission correspond to 1
PHICH, or corresponding 0 PHICH.
10. according to the method described in claim 8, it is characterized in that, the TTI Bundle of the 4th transmission correspond to 0,1
A or 2 PDCCH channels.
11. according to the method described in claim 10, it is characterized in that, when the TTI Bundle of described 4th time transmission correspond to 0
When a PDCCH channels, the scheduling information of the TTI Bundle of the 4th transmission passes through first time, second or this third
PDCCH instructions corresponding to secondary transmission；When the TTI Bundle of described 4th time transmission correspond to 1 PDCCH channel, described the
The scheduling information of preceding 4 TTI of 8 TTI passes through corresponding to first time, second or this third time transmission in four transmission
PDCCH instructions, the scheduling information of rear 4 TTI of 8 TTI is indicated by the corresponding PDCCH of rear 4 TTI, or is passed through
The corresponding PDCCH instructions of last 8 TTI；It is described when the TTI Bundle of described 4th time transmission correspond to 2 PDCCH channels
The scheduling information of preceding 4 TTI in 4th transmission in 8 TTI indicated by the corresponding PDCCH of preceding 4 TTI, this 8
The scheduling information of rear four TTI in TTI is indicated by the corresponding PDCCH of rear 4 TTI.
12. according to the method described in any one of claim 1 to 8 and 11, which is characterized in that the TTI Bundling increase
The length of the TTI Bundle of strong transmission mode is 4 or 8, the length of the TTI Bundle of the TTI Bundling transmission modes
It is 4.
13. according to the method described in any one of claim 1 to 8 and 11, which is characterized in that the TTI Bundling are passed
The RTT of defeated mode is 16ms, and the RTT of most latter two TTI Bundle in the TTI Bundling enhancings transmission mode is
RTT between 12ms, other TTI Bundle is 16ms.
14. a kind of data transmission device, it is characterised in that including：
Determining module, for determining using Transmission Time Interval binding TTI Bundling enhancing transmission mode transmission datas when institute
The first running time-frequency resource occupied, wherein first running time-frequency resource includes at least the data using TTI Bundling transmission
Occupied second running time-frequency resource when mode is transmitted, and the round-trip RTT of TTI Bundling enhancing transmission modes
Less than or equal to the RTT of the TTI Bundling transmission modes；
Transmission module, for enhancing transmission mode transmission data by TTI Bundling on first running time-frequency resource.
15. device according to claim 14, which is characterized in that the physics in the TTI Bundling enhancings transmission is mixed
The time-domain position for closing automatic repeat request instruction channel PHICH is identical as the time-domain position that the TTI Bundling are transmitted.
16. device according to claim 14, which is characterized in that in TTI Bundling enhancing transmission with it is described
The scheduling information of scheduling information and TTI Bundling transmission of the TTI Bundling transmission compared to more increased multiple TTI
It is identical or indicated by new physical downlink control channel PDCCH.
17. the device according to any one of claim 14 to 16, which is characterized in that the transmission sides the TTI Bundling
It is 12 or 16 that formula, which carries out data transmission reaching the TTI occupied when maximum transmission times, the TTI Bundling enhancings transmission
The TTI that mode carries out data transmission reaching maximum transmission times occupancy is 20.
18. the device according to any one of claim 14 to 16, which is characterized in that the TTI Bundling enhancings pass
The length of the TTI Bundle of defeated mode is 4 or 8, and the length of the TTI Bundle of the TTI Bundling transmission modes is 4.
19. the device according to any one of claim 14 to 16, which is characterized in that the transmission sides the TTI Bundling
The RTT of formula is 16ms, and the RTT of most latter two TTI Bundle in the TTI Bundling enhancings transmission mode is 12ms,
RTT between other TTI Bundle is 16ms.
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| WO2015035619A1 (en) | 2013-09-13 | 2015-03-19 | 华为技术有限公司 | Method, device, and system for information transmission |
| WO2015131316A1 (en) * | 2014-03-03 | 2015-09-11 | 华为技术有限公司 | Information transmission method, base station, and user equipment |
| CN110445595B (en) * | 2015-10-08 | 2022-06-21 | 上海朗帛通信技术有限公司 | Low-delay wireless communication method and device |
| WO2017079530A1 (en) * | 2015-11-04 | 2017-05-11 | Interdigital Patent Holdings, Inc. | Device and methods for multiplexing transmissions with different tti duration |
| WO2017193334A1 (en) | 2016-05-12 | 2017-11-16 | 广东欧珀移动通信有限公司 | Inter-device communication method and apparatus |
| US10524257B2 (en) * | 2016-10-09 | 2019-12-31 | Qualcomm Incorporated | TTI bundling for URLLC UL/DL transmissions |
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