CN106506111A - A kind of reference signal design method and apparatus in radio communication - Google Patents
A kind of reference signal design method and apparatus in radio communication Download PDFInfo
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- CN106506111A CN106506111A CN201510559955.5A CN201510559955A CN106506111A CN 106506111 A CN106506111 A CN 106506111A CN 201510559955 A CN201510559955 A CN 201510559955A CN 106506111 A CN106506111 A CN 106506111A
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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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
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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
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- Computer Networks & Wireless Communication (AREA)
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- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses the reference signal design method and apparatus in a kind of radio communication.In implementing as one, base station sends the first signaling, the transmission of data of first signaling scheduling in N number of LTE time slots in step one；Scheduling according to the first signaling in step 2 sends the second data in N number of LTE time slots.Wherein, the first signaling is physical layer signaling, and the first signaling includes the schedule information of the second data.The N is positive integer.Second data include that N number of transmission block group, N number of transmission block group are transmitted in N number of LTE time slots respectively, and a transmission block group includes G transmission block, and the G is positive integer.The present invention can reduce network delay, while keeping the compatibility with existing LTE equipment.
Description
Technical field
The present invention relates to the transmission plan in wireless communication system, is more particularly to based on Long Term Evolution
The method and apparatus of the low latency transmission of (LTE-Long Term Evolution).
Background technology
In 3GPP (3rd Generation Partner Project, third generation cooperative partner program)
In RAN (Radio Access Network, wireless access network) #63 plenary session, reduce LTE
The delay of network this problem comes into question.The delay of LTE network includes eating dishes without rice or wine to postpone, signal transacting
Time delay, the transmission delay between node etc..With the upgrading of wireless access network and core net, transmit
Time delay is can be effectively reduced.With the application of the new semiconductor for possessing higher height reason speed, signal
Process time delay to be significantly reduced.
In LTE, TTI (Transmission Time Interval, Transmission Time Interval) or
Subframe or PRB (Physical Resource Block) correspond to one in time to (Pair)
Individual ms (milli-second, millisecond).One LTE subframe includes two time slots (Time Slot)
- it is the first time slot and the second time slot respectively.PDCCH(Physical Downlink Control
Channel, Physical Downlink Control Channel) take the front R OFDM (Orthogonal of PRB couple
Frequency Division Multiplexing, OFDM) symbol, the R is
Positive integer less than 5, the R is by PCFICH (Physical Control Format Indicator
Channel, Physical Control Format Indicator Channel) configuration.For FDD (Frequency Division
Duplex, FDD) LTE, HARQ (Hybrid Automatic Repeat reQuest,
Hybrid automatic repeat-request) the winding time is 8ms, a small amount of HARQ is retransmitted and will be brought tens of ms
Network delay.Therefore reduce eat dishes without rice or wine time delay become reduce LTE network time delay effective means.
For there are problems that in LTE longer eat dishes without rice or wine time delay this, the invention provides solution.
It should be noted that in the case where not conflicting, UE (User Equipment, the user of the application
Equipment) in embodiment and embodiment in feature may apply in base station, vice versa.Enter one
Step, in the case where not conflicting, feature in embodiments herein and embodiment can any phase
Mutually combine.
Content of the invention
In order to reduce time delay of eating dishes without rice or wine, one intuitively method be that the brand-new short subframe of design is existing to substitute
Some LTE subframes.Inventor has found that by research faced one asks above-mentioned intuitively method
Topic is can not compatible existing LTE equipment.Therefore the invention discloses a kind of and existing LTE equipment
Mutually compatible scheme.
The invention discloses a kind of method in base station for supporting low latency radio communication, wherein, bag
Include following steps：
- step A. sends the first signaling, data of first signaling scheduling in N number of LTE time slots
Transmission
- step B. operates the second data in N number of LTE time slots first.First operation is to send,
Or first operation be receive.
Wherein, the first signaling is physical layer signaling, and the first signaling includes the scheduling of the second data
Information.The N is positive integer.Second data include N number of transmission block group, N number of transmission block
Group is transmitted in N number of LTE time slots respectively, and a transmission block group includes G transmission
Block, the G are positive integers.
The essence of said method is：The structure of existing LTE subframes is maintained, and TTI is dropped by 1ms
Low for 0.5ms.Using said method, traditional LTE equipment and first node can be same
Transceiving data is distinguished on the same LTE time slots of carrier wave.
Used as one embodiment, the N is 1.
Used as one embodiment, the N is 1, and N number of LTE time slots are LTE time slots
Time slot afterwards.
Used as one embodiment, the N is more than 1, and N number of LTE time slots are discontinuous.
Used as one embodiment, the N is 2, and N number of LTE time slots are located at same LTE
Subframe.The benefit of the present embodiment is reduction of the increase of control signaling expense caused by short TTI.
Used as one embodiment, the first signaling is for descending scheduling (Downlink Grant)
DCI (Downlink Control Information, Downlink Control Information), the first operation are to send out
Send.As a sub- embodiment of above-described embodiment, the first signaling be DCI format 1,1A, 1B,
1C, 1D, 2,2A, 2B, 2C, 2D } in one kind.
Used as one embodiment, the first signaling is the DCI for uplink scheduling, and the first operation is to connect
Receive.Used as a sub- embodiment of above-described embodiment, the first signaling is in DCI format { 0,4 }
A kind of.
Used as one embodiment, the transmission block is MAC (Medium Access Control, matchmaker
Body Access Control) PDU (Protocol Data Unit, protocol Data Unit).
Used as one embodiment, the G is 1.
Used as one embodiment, the G is 2, and the G transmission block is respectively by different antennas
Port sends.
Used as one embodiment, the first signaling includes G modulating-coding index, the G tune
Code index processed is respectively used to indicate the tune adopted by the G transmission block in the transmission block group
Mode processed and code rate (the shared identical G MCS of i.e. described N number of transmission block group).As upper
A sub- embodiment of embodiment is stated, the modulating-coding index is the MCS in LTE
(Modulation and Coding Scheme, Modulation and Coding Scheme).
Specifically, according to an aspect of the present invention, it is characterised in that the first signaling be following it
One：
- select one. the first channel in LTE time slots.Wherein, a LTE
Time slot is first time slot or the second time slot of LTE subframes, and the RE shared by the first channel is
Pattern in one LTE time slots is RE (Resource Element, the resource grains shared by PDCCH
Son) pattern in the first time slot of LTE subframes.
- select two. transmit on the second channel in the 2nd LTE time slots.Wherein, the 2nd LTE
Time slot is the first time slot or the second time slot in LTE subframes, the RE quilts shared by second channel
High-level signaling distributes to EPDCCH (Enhanced PDCCH, enhanced PDCCH).
- select three. transmit on PDCCH or EPDCCH.
In above-mentioned selection one and selection two, the first signaling is transmitted in a LTE time slot, and can be gone out
Any one time slot of present LTE subframes.Current time slots are supported in above-mentioned selection one and selection two respectively
Scheduling (i.e. the first signaling only dispatches LTE time slots), therefore possesses shorter scheduler latency.
But above-mentioned selection one and selection two introduce new physical layer channel.Above-mentioned selection three is not introduced
New physical layer channel, but need to dispatch longer scheduling across timeslot scheduling or multi-slot
Time delay.
Specifically, according to an aspect of the present invention, it is characterised in that also comprise the steps：
- step C. second operates N number of HARQ signalings in N number of follow-up LTE time slots respectively.
Wherein, first operation be send and second operation be receive, or first operation be receive and
Second operation is to send.N number of HARQ signalings are respectively used to indicate N number of transmission block group
In transmission block whether be properly decoded.N number of follow-up LTE time slots are N number of LTE respectively
K-th time slot after time slot, the K is positive integer.
Used as one embodiment, the K is 4.
Used as one embodiment, the HARQ signalings include G bit, the G bit difference
For indicating whether G transmission block in corresponding transmission block group is properly decoded.
Used as one embodiment, the HARQ signalings include that 1 bit, 1 bit are used for
Indicate whether G transmission block in corresponding transmission block group is all properly decoded.The embodiment is saved
The empty overhead that the HARQ signalings take.
Used as one embodiment, the RE shared by the HARQ signalings is distributed to by high-level signaling
EPDCCH.
For the TTI of 0.5ms, one intuitively scheme be will demodulation the second data needed for DMRS
(Demodulation Reference Signal, demodulated reference signal) is placed on a LTE
In time slot (the DMRS schemes in similar LTE DwPTS).But above-mentioned intuitively scheme may face
Face following problem：
-. excessive DMRS reduces efficiency of transmission
-. when using URS, (UE-specific Reference Signal, UE are specifically with reference to letter
Number) as DMRS when, the URS being placed in a LTE time slot may result in PDCCH symbol
Number is limited (less than 2), have impact on PDCCH capacity.
The present invention proposes following solution for the problems referred to above.
Specifically, according to an aspect of the present invention, it is characterised in that step B also includes
Following steps：
-. step B1. first operation DMRS in M subframe.
Wherein, N number of LTE time slots are distributed in the M subframe, and the M is positive integer,
The DMRS and the second data are sent by identical antenna port.Figures of the DMRS in subframe
Case is one below：
- the first pattern：(Cell specific Reference Signal, cell are special for LTE CRS
Fixed reference signal) pattern in the subframe
- the second pattern：(UE specific Reference Signal, UE are special for the descending URS of LTE
Determine reference signal) pattern in the subframe
- the three pattern：Patterns of the up DMRS of LTE in subframe.
In above-mentioned aspect, the DMRS patterns in units of the existing subframe by LTE are adopted by short TTI,
So that base station (or possessing the UE of scheduling feature) can improve biography as far as possible by the method for scheduling
Defeated efficiency (for example continuously dispatching two LTE time slots of a LTE subframe as far as possible).
As one embodiment, in the M subframe, at least include a target-subframe, the mesh
A time slot in N number of LTE time slots is only included in mark subframe.With existing reference signal
Scheme is different, and the part RE shared by the DMRS in above-described embodiment occurs in described N number of
Outside LTE time slots, thus possesses unobviousness.
Specifically, according to an aspect of the present invention, it is characterised in that the first signaling is the choosing
One or the selection two is selected, the N is 1, and N number of LTE time slots are LTE time slots.
Used as one embodiment, the first signaling is the selection one, and LTE time slots are LTE
Second time slot of frame, the PDSCH for traditional UE transmitted in LTE time slots is in the first letter
It is perforated on the shared RE of order.
Specifically, according to an aspect of the present invention, it is characterised in that the first signaling is the choosing
Three are selected, the first signaling includes that time slot is indicated, N number of LTE time slots described in the time slot sign.
Used as one embodiment, the time slot that all first signalings may be dispatched constitutes very first time window,
Very first time window is made up of T time slot, when the earliest time slot in very first time window is a LTE
Gap, the time slot indicate to be made up of N number of subindex, and N number of subindex identifies the N respectively
Individual LTE time slots, the subindex byIndividual bit composition, the T are just being greater than N
Integer,It is no less than the smallest positive integral of X.
Used as one embodiment, the time slot that all first signalings may be dispatched constitutes very first time window,
Very first time window is made up of T time slot, and the time slot indicates to be made up of T bit, the T
Whether bit indicates respectively the T time slot by the first signaling scheduling, and the T is greater than or waits
Positive integer in the N.
Used as one embodiment, the N is 1, and the time slot indicates to include 1 bit, described
Time slot indicates first time slot or the second time slot of the LTE subframes that is transmitted for the first signaling of mark.
The invention discloses a kind of method in UE for supporting low latency radio communication, wherein, bag
Include following steps：
- step A. receives the first signaling, data of first signaling scheduling in N number of LTE time slots
Transmission
- step B. operates the second data in N number of LTE time slots the 3rd.3rd operation is to receive,
Or the 3rd operation be send.
Wherein, the first signaling is physical layer signaling, and the first signaling includes the scheduling letter of the second data
Breath.The N is positive integer.Second data include N number of transmission block group, N number of transmission block group
Transmit in N number of LTE time slots respectively, a transmission block group includes G transmission block,
The G is positive integer.
Specifically, according to an aspect of the present invention, it is characterised in that the first signaling be following it
One：
- select one. the first channel in LTE time slots.Wherein, a LTE
Time slot is first time slot or the second time slot of LTE subframes, and the RE shared by the first channel is
Pattern in one LTE time slots is RE shared by PDCCH in the first time slot of LTE subframes
Pattern.
- select two. transmit on the second channel in the 2nd LTE time slots.Wherein, the 2nd LTE
Time slot is the first time slot or the second time slot in LTE subframes, the RE quilts shared by second channel
High-level signaling distributes to EPDCCH.
- select three. transmit on PDCCH or EPDCCH.
Specifically, according to an aspect of the present invention, it is characterised in that also comprise the steps：
- step C. the 4th operates N number of HARQ signalings in N number of follow-up LTE time slots respectively.
Wherein, the 3rd operation be send and the 4th operation be receive, or the 3rd operation be receive and
4th operation is to send.N number of HARQ signalings are respectively used to indicate N number of transmission block group
In transmission block whether be properly decoded.N number of follow-up LTE time slots are N number of LTE respectively
K-th time slot after time slot, the K is positive integer.
Specifically, according to an aspect of the present invention, it is characterised in that step B also includes
Following steps：
-. step B1. the 3rd operation DMRS in M subframe.
Wherein, N number of LTE time slots are distributed in the M subframe, and the M is positive integer,
The DMRS and the second data are sent by identical antenna port.Figures of the DMRS in subframe
Case is one below：
- the first pattern：Patterns of the LTE CRS in subframe
- the second pattern：Patterns of the descending URS of LTE in subframe
- the three pattern：Patterns of the up DMRS of LTE in subframe.
Specifically, according to an aspect of the present invention, it is characterised in that the first signaling is the choosing
One or the selection two is selected, the N is 1, and N number of LTE time slots are LTE time slots.
Specifically, according to an aspect of the present invention, it is characterised in that the first signaling is the choosing
Three are selected, the first signaling includes that time slot is indicated, N number of LTE time slots described in the time slot sign.
The invention discloses a kind of base station equipment for supporting low latency radio communication, wherein, including such as
Lower module：
First module：For sending the first signaling, the first signaling scheduling is in N number of LTE time slots
The transmission of data
Second module：For operating the second data in N number of LTE time slots first.First operation
It is to send, or the first operation is to receive.
Wherein, the first signaling is physical layer signaling, and the first signaling includes the scheduling letter of the second data
Breath.The N is positive integer.Second data include N number of transmission block group, N number of transmission block group
Transmit in N number of LTE time slots respectively, a transmission block group includes G transmission block,
The G is positive integer.
Used as one embodiment, above-mentioned base station equipment is characterised by, the first signaling is one below：
- select one. the first channel in LTE time slots.Wherein, a LTE
Time slot is first time slot or the second time slot of LTE subframes, and the RE shared by the first channel is
Pattern in one LTE time slots is RE shared by PDCCH in the first time slot of LTE subframes
Pattern.
- select two. transmit on the second channel in the 2nd LTE time slots.Wherein, the 2nd LTE
Time slot is the first time slot or the second time slot in LTE subframes, the RE quilts shared by second channel
High-level signaling distributes to EPDCCH.
- select three. transmit on PDCCH or EPDCCH.
Used as one embodiment, above-mentioned base station equipment is characterised by, the equipment also includes：
3rd module：For second operating N number of HARQ signalings respectively in N number of follow-up LTE time slots.
Wherein, first operation be send and second operation be receive, or first operation be receive and
Second operation is to send.N number of HARQ signalings are respectively used to indicate N number of transmission block group
In transmission block whether be properly decoded.N number of follow-up LTE time slots are N number of LTE respectively
K-th time slot after time slot, the K is positive integer.
Used as one embodiment, above-mentioned base station equipment is characterised by, the second module is additionally operable in M
First operation DMRS in individual subframe.Wherein, N number of LTE time slots are distributed in the M subframe
On, the M is positive integer, and the DMRS and the second data are sent by identical antenna port.
Patterns of the DMRS in subframe is one below：
- the first pattern：Patterns of the LTE CRS in subframe
- the second pattern：Patterns of the descending URS of LTE in subframe
- the three pattern：Patterns of the up DMRS of LTE in subframe.
The invention discloses a kind of user equipment for supporting low latency radio communication, wherein, including such as
Lower module：
First module：For receiving the first signaling, the first signaling scheduling is in N number of LTE time slots
The transmission of data
Second module：For operating the second data in N number of LTE time slots the 3rd.3rd operation
It is to receive, or the 3rd operation is to send.
Wherein, the first signaling is physical layer signaling, and the first signaling includes the scheduling letter of the second data
Breath.The N is positive integer.Second data include N number of transmission block group, N number of transmission block group
Transmit in N number of LTE time slots respectively, a transmission block group includes G transmission block,
The G is positive integer.
Used as one embodiment, above-mentioned user equipment is characterised by, the first signaling is one below：
- select one. the first channel in LTE time slots.Wherein, a LTE
Time slot is first time slot or the second time slot of LTE subframes, and the RE shared by the first channel is
Pattern in one LTE time slots is RE shared by PDCCH in the first time slot of LTE subframes
Pattern.
- select two. transmit on the second channel in the 2nd LTE time slots.Wherein, the 2nd LTE
Time slot is the first time slot or the second time slot in LTE subframes, the RE quilts shared by second channel
High-level signaling distributes to EPDCCH.
- select three. transmit on PDCCH or EPDCCH.
Used as one embodiment, above-mentioned user equipment is characterised by, the equipment also includes：
3rd module：For the 4th operating N number of HARQ signalings respectively in N number of follow-up LTE time slots.
Wherein, the 3rd operation be send and the 4th operation be receive, or the 3rd operation be receive and
4th operation is to send.N number of HARQ signalings are respectively used to indicate N number of transmission block group
In transmission block whether be properly decoded.N number of follow-up LTE time slots are N number of LTE respectively
K-th time slot after time slot, the K is positive integer.
Used as one embodiment, above-mentioned user equipment is characterised by, the second module is additionally operable in M
3rd operation DMRS in individual subframe.Wherein, N number of LTE time slots are distributed in the M subframe
On, the M is positive integer, and the DMRS and the second data are sent by identical antenna port.
Patterns of the DMRS in subframe is one below：
- the first pattern：Patterns of the LTE CRS in subframe
- the second pattern：Patterns of the descending URS of LTE in subframe
- the three pattern：Patterns of the up DMRS of LTE in subframe.
Existing public technology is compared, the present invention has following technical advantage：
-. reduce time delay of eating dishes without rice or wine
-. compatible existing LTE equipment.
Description of the drawings
By reading the detailed description made by non-limiting example that is made with reference to the following drawings, this
The other features, objects and advantages of invention will become more apparent：
Fig. 1 shows downlink transfer flow chart according to an embodiment of the invention；
Fig. 2 shows uplink flow chart according to an embodiment of the invention；
Fig. 3 shows resource allocation schematic diagram according to an embodiment of the invention；
Fig. 4 shows the schematic diagram of the first channel according to an embodiment of the invention；
Fig. 5 shows the schematic diagram of second channel according to an embodiment of the invention；
Fig. 6 shows the schematic diagram across timeslot scheduling according to an embodiment of the invention；
Fig. 7 shows the schematic diagram of multi-slot scheduling according to an embodiment of the invention；
Fig. 8 shows the structural frames of the processing meanss in base station according to an embodiment of the invention
Figure；
Fig. 9 shows the structured flowchart of the processing meanss in UE according to an embodiment of the invention；
Specific embodiment
Technical scheme is described in further detail below in conjunction with accompanying drawing, needs explanation
It is that, in the case where not conflicting, the feature in embodiments herein and embodiment can be arbitrarily mutual
Combination.
Embodiment 1
Embodiment 1 illustrates downlink transfer flow chart, as shown in Figure 1.In accompanying drawing 1, base station N1
It is the maintenance base station of the Serving cell of UE U2, is optional step the step of mark in square frame F1.
ForBase station N1, send the first signaling in step s 11, in step s 12 in N number of LTE
Time slot sends the second data, receives N number of HARQ respectively in N number of follow-up LTE time slots in step s 13
Signaling.
ForUE U2, receive the first signaling in the step s 21, in the N in step S22
Individual LTE time slots receive the second data, are sent in N number of follow-up LTE time slots respectively in step S23
N number of HARQ signalings.
In embodiment 1, the transmission of data of first signaling scheduling in N number of LTE time slots, first
Signaling is physical layer signaling, and the first signaling includes the schedule information of the second data.The N is just
Integer.Second data include N number of transmission block group, and N number of transmission block group is respectively described N number of
Transmit in LTE time slots, a transmission block group includes G transmission block, and the G is just whole
Number.N number of HARQ signalings are respectively used to indicate that the transmission block in N number of transmission block group is
No it is properly decoded.After N number of follow-up LTE time slots are N number of LTE time slots respectively
K-th time slot, the K are positive integers.
As the sub- embodiment 1 of embodiment 1, the first signaling be DCI format 1,1A, 1B, 1C,
1D, 2,2A, 2B, 2C, 2D } in one kind.
Used as the sub- embodiment 2 of embodiment 1, the first signaling is first in LTE time slots
Channel.Wherein, LTE time slots are the second time slots of LTE subframes, the first channel institute
The RE of occupancy belongs to first three OFDM symbol in LTE time slots, shared by the first channel
RE includes W CCE (Control Channel Element, control channel particle), the W
It is in { 1,2,4,8 }.
Used as the sub- embodiment 3 of embodiment 1, the first signaling is second in the 2nd LTE time slots
Channel.Wherein, when the 2nd LTE time slots are the first time slot in LTE subframes or second
Gap, the RE shared by second channel are distributed to EPDCCH by high-level signaling.
Used as the sub- embodiment 4 of embodiment 1, the physical layer channel shared by the second data is mapped to
DL-SCH (Downlink Shared Channel, DSCH Downlink Shared Channel).
Embodiment 2
Embodiment 2 illustrates uplink flow chart, as shown in Figure 2.In accompanying drawing 2, base station N3
It is the maintenance base station of the Serving cell of UE U4, is optional step the step of mark in square frame F2.
ForBase station N3, the first signaling is sent in step S31, in step s 32 in the N
Individual LTE time slots receive the second data, are sent out respectively in step S33 in N number of follow-up LTE time slots
Send N number of HARQ signalings.
ForUE U4, the first signaling is received in step S41, in the N in step S42
Individual LTE time slots send the second data, are connect respectively in step S43 in N number of follow-up LTE time slots
Receive N number of HARQ signalings.
In embodiment 2, the first signaling is physical layer signaling, and the first signaling scheduling is in N number of LTE
The transmission of the data in gap, the first signaling include the schedule information of the second data.The N is just
Integer.Second data include N number of transmission block group, and N number of transmission block group is respectively described N number of
Transmit in LTE time slots, a transmission block group includes G transmission block, and the G is just whole
Number.N number of HARQ signalings are respectively used to indicate that the transmission block in N number of transmission block group is
No it is properly decoded.After N number of follow-up LTE time slots are N number of LTE time slots respectively
K-th time slot, the K are positive integers.
Used as the sub- embodiment 1 of embodiment 2, the HARQ signalings include G binary bits,
The G binary bits be respectively used to indicate G transmission block in corresponding transmission block group whether by
Correct decoding.
Used as the sub- embodiment 2 of embodiment 2, the HARQ signalings include 1 binary bits,
1 binary bits are respectively used to indicate whether G transmission block in corresponding transmission block group be complete
Portion is properly decoded (not being properly decoded, it indicates that NACK) if there are a transmission block.
Used as the sub- embodiment 3 of embodiment 2, the physical layer channel shared by the second data is mapped to
UL-SCH (Uplink Shared Channel, Uplink Shared Channel).
Embodiment 3
Embodiment 3 illustrates resource allocation schematic diagram, as shown in Figure 3.Accompanying drawing 3 (a) and accompanying drawing
3 (b) illustrates the resource allocation schematic diagram of downlink transfer and uplink respectively.In accompanying drawing 3, thick line
The grid of mark is the RE shared by CRS, and the grid of oblique line filling is the RE that PDCCH takes, and intersects
Line filling grid be for demodulate the second data DMRS shared by RE, stain filling grid
It is the RE shared by the second data.
In accompanying drawing 3 (a), base station LTE subframes by identical antenna port send the second data and
DMRS, the second data occupy the second time slot in LTE subframes, and patterns of the DMRS in subframe
It is patterns of the descending URS of LTE in subframe.The RS sequences of DMRS reuse the descending URS's of LTE
RS sequences.
In accompanying drawing 3 (b), UE LTE subframes by identical antenna port send the second data and
DMRS, the second data occupy the first time slot in LTE subframes, and patterns of the DMRS in subframe
It is patterns of the up DMRS of LTE in subframe.The RS sequences of DMRS reuse the up DMRS of LTE
Sequence.
Embodiment 4
Embodiment 4 illustrates the schematic diagram of the first channel, as shown in Figure 4.
In embodiment 4, first channel of first signaling in LTE time slots.Wherein,
First LTE time slots are first time slots or the second time slot of LTE subframes, shared by the first channel
Patterns of the RE in LTE time slots is RE shared by PDCCH in the first of LTE subframes
Pattern in gap.
The transmission of the data in the first LTE time slots of the first signaling scheduling：If LTE time slots are
First time slot of LTE subframes, first slot transmission (scheduling relation of second data in LTE subframes
As indicated by arrow a 1)；If LTE time slots are the second time slots of LTE subframes, the second data
The second slot transmission in LTE subframes (scheduling relation is as indicated by arrow a 2).
Embodiment 5
Embodiment 5 illustrates the schematic diagram of second channel, as shown in Figure 5.
In embodiment 5, transmit on second channel of first signaling in the 2nd LTE time slots.Wherein,
2nd LTE time slots are the first time slot or the second time slot in LTE subframes, shared by second channel
RE EPDCCH is distributed to by high-level signaling.
The transmission of the data in the 2nd LTE time slots of the first signaling scheduling：If the 2nd LTE time slots are
First time slot of LTE subframes, first slot transmission (scheduling relation of second data in LTE subframes
As shown with arrow a 3)；If the 2nd LTE time slots are the second time slots of LTE subframes, the second data
The second slot transmission in LTE subframes (scheduling relation is as represented by arrow a 4).
Embodiment 6
Embodiment 6 illustrates the schematic diagram across timeslot scheduling, as shown in Figure 6.
In embodiment 6, the transmission of data of first signaling scheduling in 1 LTE time slot.First
Signaling is transmitted on PDCCH.1 LTE time slot is in the transmission subframe of the first signaling
One time slot (as indicated by arrow a 5) or the second time slot (as indicated by arrow, i.e., across time slot tune
Degree).
Embodiment 7
Embodiment 7 illustrates the schematic diagram of multi-slot scheduling, as shown in Figure 7.
In embodiment 7, the transmission of data of first signaling scheduling in N number of LTE time slots.First
Signaling is transmitted on PDCCH.N number of LTE time slots are included in the transmission subframe of the first signaling
First time slot and the second time slot (as shown in arrow A7 and A8).
Used as the sub- embodiment 1 of embodiment 7, N number of LTE time slots also include cross-subframe LTE
Time slot (as shown in dotted arrow A9).
Embodiment 8
Embodiment 8 illustrates the structured flowchart of the processing meanss in a base station, as shown in Figure 8.
In accompanying drawing 8, base station processing meanss 100 are main by sending module 101, processing module 102 and process
Module 103 is constituted, and wherein processing module 103 is optional module.
Sending module 101 is used for sending the first signaling, number of first signaling scheduling in N number of LTE time slots
According to transmission.Processing module 102 is used for operating the second data in N number of LTE time slots first.
Processing module 103 is used in N number of follow-up LTE time slots the N number of HARQ signalings of the second operation respectively.
In embodiment 8, the first signaling is physical layer signaling, and the first signaling includes the second data
Schedule information.The N is positive integer.Second data include N number of transmission block group, N number of biography
Defeated piece of group is transmitted in N number of LTE time slots respectively, and a transmission block group includes G
Transmission block, the G are positive integers.First operation be send and second operation be receive, Huo Zhe
One operation be receive and second operation be send.N number of HARQ signalings are respectively used to indicate institute
Whether the transmission block that states in N number of transmission block group is properly decoded.N number of follow-up LTE time slots point
It is not the k-th time slot after N number of LTE time slots, the K is positive integer.
Used as the sub- embodiment 1 of embodiment 8, the physical layer channel shared by the second data is mapped to
DL-SCH (Downlink Shared Channel, DSCH Downlink Shared Channel) or UL-SCH (Uplink
Shared Channel, Uplink Shared Channel).
As the sub- embodiment 2 of embodiment 8, filling CRC (Cyclic Redundancy Check,
Cyclic redundancy is delivered for a check) after, if the bit number of the transmission block is more than Z, described (it is filled with CRC
) transmission block is split into multiple code blocks, the bit number in each code block is less than the Z, institute
State the positive integer that Z is less than 6144.Each described code block is one group of input letter of channel encoder
Breath bit.The code block of LTE is compared, the sub- embodiment 2 of embodiment 8 reduces code block size, enters
And time of channel decoding is reduced, time delay of eating dishes without rice or wine on the one hand is reduced, receiver is on the other hand caused
More preferable channel estimating performance is obtained (after the DMRS in two time slots for receiving LTE subframes
Channel decoding is executed to the transmission block in the first time slot again).
Embodiment 9
Embodiment 9 illustrates the structured flowchart of the processing meanss in a base station, as shown in Figure 9.
In accompanying drawing 9, base station processing meanss 200 are main by receiver module 201, processing module 202 and process
Module 203 is constituted, and wherein processing module 203 is optional module.
Receiver module 201 is used for receiving the first signaling, number of first signaling scheduling in N number of LTE time slots
According to transmission.Processing module 202 is used for operating the second data in N number of LTE time slots the 3rd.
Processing module 203 is used in N number of follow-up LTE time slots the N number of HARQ signalings of the 4th operation respectively.
In embodiment 9, the first signaling is physical layer signaling, and the first signaling includes the second data
Schedule information.The N is positive integer.Second data include N number of transmission block group, N number of biography
Defeated piece of group is transmitted in N number of LTE time slots respectively, and a transmission block group includes G
Transmission block, the G are positive integers.3rd operation be send and the 4th operation be receive, Huo Zhe
Three operation be receive and the 4th operation be send.N number of HARQ signalings are respectively used to indicate institute
Whether the transmission block that states in N number of transmission block group is properly decoded.N number of follow-up LTE time slots point
It is not the k-th time slot after N number of LTE time slots, the K is positive integer.
Used as the sub- embodiment 1 of embodiment 9, the second module is additionally operable to the 3rd behaviour in M subframe
Make DMRS.Wherein, N number of LTE time slots are distributed in the M subframe, and the M is just
Integer, the DMRS and the second data are sent by one antenna port of identical, or the DMRS
Sent by the multiple antenna ports of identical with the second data.The DMRS is LTE CRS.
Used as the sub- embodiment 2 of embodiment 9, the first signaling is transmitted on PDCCH or EPDCCH,
At least include the second time slot in a LTE subframe in N number of time slot.
Used as the sub- embodiment 3 of embodiment 9, the first signaling includes that time slot is indicated, the time slot refers to
N number of LTE time slots are known in indicating.
One of ordinary skill in the art will appreciate that all or part of step in said method can be with
Related hardware is instructed by program to complete, described program can be stored in computer-readable storage medium
In matter, such as read-only storage, hard disk or CD etc..Optionally, above-described embodiment whole or
Part steps can also be realized using one or more integrated circuit.Accordingly, above-mentioned enforcement
Each modular unit in example, can be realized using example, in hardware, it is also possible to by software function module
Form realizes that the application is not limited to the combination of the software and hardware of any particular form.In the present invention
UE include but is not limited to the Wireless Telecom Equipments such as mobile phone, panel computer, notebook, card of surfing Internet.
Base station in the present invention includes but is not limited to macrocell base stations, microcell base station, Home eNodeB, in
After Wireless Telecom Equipments such as base stations.
The above, only presently preferred embodiments of the present invention is not intended to limit the present invention's
Protection domain.All any modifications that within the spirit and principles in the present invention, is made, equivalent,
Improve etc., should be included within the scope of the present invention.
Claims (20)
1. a kind of method in base station for supporting low latency radio communication, wherein, walks including following
Suddenly：
- step A. sends the first signaling, data of first signaling scheduling in N number of LTE time slots
Transmission
- step B. operates the second data in N number of LTE time slots first.First operation is to send,
Or first operation be receive.
Wherein, the first signaling is physical layer signaling, and the first signaling includes the scheduling letter of the second data
Breath.The N is positive integer.Second data include N number of transmission block group, N number of transmission block group
Transmit in N number of LTE time slots respectively, a transmission block group includes G transmission block,
The G is positive integer.
2. method according to claim 1, it is characterised in that the first signaling is one below：
- select one. the first channel in LTE time slots.Wherein, a LTE
Time slot is first time slot or the second time slot of LTE subframes, and the RE shared by the first channel is
Pattern in one LTE time slots is RE shared by PDCCH in the first time slot of LTE subframes
Pattern.
- select two. transmit on the second channel in the 2nd LTE time slots.Wherein, the 2nd LTE
Time slot is the first time slot or the second time slot in LTE subframes, the RE quilts shared by second channel
High-level signaling distributes to EPDCCH.
- select three. transmit on PDCCH or EPDCCH.
3. method according to claim 1, it is characterised in that also comprise the steps：
- step C. second operates N number of HARQ signalings in N number of follow-up LTE time slots respectively.
Wherein, first operation be send and second operation be receive, or first operation be receive and
Second operation is to send.N number of HARQ signalings are respectively used to indicate N number of transmission block group
In transmission block whether be properly decoded.N number of follow-up LTE time slots are N number of LTE respectively
K-th time slot after time slot, the K is positive integer.
4. method according to claim 1, it is characterised in that step B also include as
Lower step：
-. step B1. first operation DMRS in M subframe.
Wherein, N number of LTE time slots are distributed in the M subframe, and the M is positive integer,
The DMRS and the second data are sent by identical antenna port.Figures of the DMRS in subframe
Case is one below：
- the first pattern：Patterns of the LTE CRS in subframe
- the second pattern：Patterns of the descending URS of LTE in subframe
- the three pattern：Patterns of the up DMRS of LTE in subframe.
5. method according to claim 2, it is characterised in that the first signaling is the selection
One or described select two, the N be 1, N number of LTE time slots are LTE time slots.
6. method according to claim 2, it is characterised in that the first signaling is the selection
Three, the first signaling includes that time slot is indicated, N number of LTE time slots described in the time slot sign.
7. a kind of method in UE for supporting low latency radio communication, wherein, comprises the steps：
- step A. receives the first signaling, data of first signaling scheduling in N number of LTE time slots
Transmission
- step B. operates the second data in N number of LTE time slots the 3rd.3rd operation is to receive,
Or the 3rd operation be send.
Wherein, the first signaling is physical layer signaling, and the first signaling includes the scheduling letter of the second data
Breath.The N is positive integer.Second data include N number of transmission block group, N number of transmission block group
Transmit in N number of LTE time slots respectively, a transmission block group includes G transmission block,
The G is positive integer.
8. method according to claim 7, it is characterised in that the first signaling is one below：
- select one. the first channel in LTE time slots.Wherein, a LTE
Time slot is first time slot or the second time slot of LTE subframes, and the RE shared by the first channel is
Pattern in one LTE time slots is RE shared by PDCCH in the first time slot of LTE subframes
Pattern.
- select two. transmit on the second channel in the 2nd LTE time slots.Wherein, the 2nd LTE
Time slot is the first time slot or the second time slot in LTE subframes, the RE quilts shared by second channel
High-level signaling distributes to EPDCCH.
- select three. transmit on PDCCH or EPDCCH.
9. method according to claim 7, it is characterised in that also comprise the steps：
- step C. the 4th operates N number of HARQ signalings in N number of follow-up LTE time slots respectively.
Wherein, the 3rd operation be send and the 4th operation be receive, or the 3rd operation be receive and
4th operation is to send.N number of HARQ signalings are respectively used to indicate N number of transmission block group
In transmission block whether be properly decoded.N number of follow-up LTE time slots are N number of LTE respectively
K-th time slot after time slot, the K is positive integer.
10. method according to claim 7, it is characterised in that step B also includes
Following steps：
-. step B1. the 3rd operation DMRS in M subframe.
Wherein, N number of LTE time slots are distributed in the M subframe, and the M is positive integer,
The DMRS and the second data are sent by identical antenna port.Figures of the DMRS in subframe
Case is one below：
- the first pattern：Patterns of the LTE CRS in subframe
- the second pattern：Patterns of the descending URS of LTE in subframe
- the three pattern：Patterns of the up DMRS of LTE in subframe.
11. methods according to claim 8, it is characterised in that the first signaling is the choosing
One or the selection two is selected, the N is 1, and N number of LTE time slots are LTE time slots.
12. methods according to claim 8, it is characterised in that the first signaling is the choosing
Three are selected, the first signaling includes that time slot is indicated, N number of LTE time slots described in the time slot sign.
A kind of 13. base station equipments for supporting low latency radio communication, wherein, including such as lower module：
First module：For sending the first signaling, the first signaling scheduling is in N number of LTE time slots
The transmission of data
Second module：For operating the second data in N number of LTE time slots first.First operation
It is to send, or the first operation is to receive.
Wherein, the first signaling is physical layer signaling, and the first signaling includes the scheduling letter of the second data
Breath.The N is positive integer.Second data include N number of transmission block group, N number of transmission block group
Transmit in N number of LTE time slots respectively, a transmission block group includes G transmission block,
The G is positive integer.
14. equipment according to claim 13, it is characterised in that the first signaling be following it
One：
- select one. the first channel in LTE time slots.Wherein, a LTE
Time slot is first time slot or the second time slot of LTE subframes, and the RE shared by the first channel is
Pattern in one LTE time slots is RE shared by PDCCH in the first time slot of LTE subframes
Pattern.
- select two. transmit on the second channel in the 2nd LTE time slots.Wherein, the 2nd LTE
Time slot is the first time slot or the second time slot in LTE subframes, the RE quilts shared by second channel
High-level signaling distributes to EPDCCH.
- select three. transmit on PDCCH or EPDCCH.
15. equipment according to claim 13, it is characterised in that the equipment also includes：
3rd module：For second operating N number of HARQ signalings respectively in N number of follow-up LTE time slots.
Wherein, first operation be send and second operation be receive, or first operation be receive and
Second operation is to send.N number of HARQ signalings are respectively used to indicate N number of transmission block group
In transmission block whether be properly decoded.N number of follow-up LTE time slots are N number of LTE respectively
K-th time slot after time slot, the K is positive integer.
16. equipment according to claim 13, it is characterised in that the second module is additionally operable to
First operation DMRS in M subframe.Wherein, N number of LTE time slots are distributed in the M son
On frame, the M is positive integer, and the DMRS and the second data are sent by identical antenna port.
Patterns of the DMRS in subframe is one below：
- the first pattern：Patterns of the LTE CRS in subframe
- the second pattern：Patterns of the descending URS of LTE in subframe
- the three pattern：Patterns of the up DMRS of LTE in subframe.
A kind of 17. user equipmenies for supporting low latency radio communication, wherein, including such as lower module：
First module：For receiving the first signaling, the first signaling scheduling is in N number of LTE time slots
The transmission of data
Second module：For operating the second data in N number of LTE time slots the 3rd.3rd operation
It is to receive, or the 3rd operation is to send.
Wherein, the first signaling is physical layer signaling, and the first signaling includes the scheduling letter of the second data
Breath.The N is positive integer.Second data include N number of transmission block group, N number of transmission block group
Transmit in N number of LTE time slots respectively, a transmission block group includes G transmission block,
The G is positive integer.
18. equipment according to claim 17, it is characterised in that the first signaling be following it
One：
- select one. the first channel in LTE time slots.Wherein, a LTE
Time slot is first time slot or the second time slot of LTE subframes, and the RE shared by the first channel is
Pattern in one LTE time slots is RE shared by PDCCH in the first time slot of LTE subframes
Pattern.
- select two. transmit on the second channel in the 2nd LTE time slots.Wherein, the 2nd LTE
Time slot is the first time slot or the second time slot in LTE subframes, the RE quilts shared by second channel
High-level signaling distributes to EPDCCH.
- select three. transmit on PDCCH or EPDCCH.
19. equipment according to claim 17, it is characterised in that the equipment also includes：
3rd module：For the 4th operating N number of HARQ signalings respectively in N number of follow-up LTE time slots.
Wherein, the 3rd operation be send and the 4th operation be receive, or the 3rd operation be receive and
4th operation is to send.N number of HARQ signalings are respectively used to indicate N number of transmission block group
In transmission block whether be properly decoded.N number of follow-up LTE time slots are N number of LTE respectively
K-th time slot after time slot, the K is positive integer.
20. equipment according to claim 17, it is characterised in that the second module is additionally operable to
3rd operation DMRS in M subframe.Wherein, N number of LTE time slots are distributed in the M son
On frame, the M is positive integer, and the DMRS and the second data are sent by identical antenna port.
Patterns of the DMRS in subframe is one below：
- the first pattern：Patterns of the LTE CRS in subframe
- the second pattern：Patterns of the descending URS of LTE in subframe
- the three pattern：Patterns of the up DMRS of LTE in subframe.
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| CN201510559955.5A CN106506111A (en) | 2015-09-06 | 2015-09-06 | A kind of reference signal design method and apparatus in radio communication |
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| CN201510559955.5A CN106506111A (en) | 2015-09-06 | 2015-09-06 | A kind of reference signal design method and apparatus in radio communication |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108811106A (en) * | 2017-05-04 | 2018-11-13 | 电信科学技术研究院 | A kind of scheduled transmission method and apparatus |
| WO2019062153A1 (en) * | 2017-09-30 | 2019-04-04 | 华为技术有限公司 | Indication method and apparatus |
| CN110999104A (en) * | 2017-07-28 | 2020-04-10 | 株式会社Ntt都科摩 | Transmission device, reception device, and wireless communication method |
| CN111356242A (en) * | 2018-12-20 | 2020-06-30 | 电信科学技术研究院有限公司 | Time slot scheduling method and equipment |
| WO2021051416A1 (en) * | 2019-09-20 | 2021-03-25 | 华为技术有限公司 | Reference signal sending method, receiving method, apparatus and system |
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| CN101795170A (en) * | 2009-02-02 | 2010-08-04 | 中兴通讯股份有限公司 | Method, receiving equipment and system for realizing data feedback |
| CN102256355A (en) * | 2010-05-19 | 2011-11-23 | 鼎桥通信技术有限公司 | High speed-physical downlink shared channel (HS-PDSCH) transmission method and device in high speed downlink packet access (HSDPA) |
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| CN101795170A (en) * | 2009-02-02 | 2010-08-04 | 中兴通讯股份有限公司 | Method, receiving equipment and system for realizing data feedback |
| CN102256355A (en) * | 2010-05-19 | 2011-11-23 | 鼎桥通信技术有限公司 | High speed-physical downlink shared channel (HS-PDSCH) transmission method and device in high speed downlink packet access (HSDPA) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108811106A (en) * | 2017-05-04 | 2018-11-13 | 电信科学技术研究院 | A kind of scheduled transmission method and apparatus |
| CN110999104A (en) * | 2017-07-28 | 2020-04-10 | 株式会社Ntt都科摩 | Transmission device, reception device, and wireless communication method |
| CN110999104B (en) * | 2017-07-28 | 2022-05-17 | 株式会社Ntt都科摩 | Transmission device, reception device, and wireless communication method |
| WO2019062153A1 (en) * | 2017-09-30 | 2019-04-04 | 华为技术有限公司 | Indication method and apparatus |
| CN111356242A (en) * | 2018-12-20 | 2020-06-30 | 电信科学技术研究院有限公司 | Time slot scheduling method and equipment |
| CN111356242B (en) * | 2018-12-20 | 2022-01-04 | 大唐移动通信设备有限公司 | Time slot scheduling method and equipment |
| WO2021051416A1 (en) * | 2019-09-20 | 2021-03-25 | 华为技术有限公司 | Reference signal sending method, receiving method, apparatus and system |
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