CN106788930B - The transmission of demodulated reference signal, method of reseptance and base station, user equipment in sTTI - Google Patents
The transmission of demodulated reference signal, method of reseptance and base station, user equipment in sTTI Download PDFInfo
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- CN106788930B CN106788930B CN201610876588.6A CN201610876588A CN106788930B CN 106788930 B CN106788930 B CN 106788930B CN 201610876588 A CN201610876588 A CN 201610876588A CN 106788930 B CN106788930 B CN 106788930B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H04L27/2611—
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/52—Allocation or scheduling criteria for wireless resources based on load
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Abstract
The transmission of demodulated reference signal, method of reseptance, base station and user equipment in sTTI, which comprises obtain the information of the non-occupied resource of CRS in sTTI；Use the demodulated reference signal of the occupied resource transmission user equipment of CRS non-in the sTTI.Above-mentioned scheme can transmit the DRS (Dedicated Reference Signal) of user equipment when using sTTI.
Description
Technical field
The present invention relates to a kind of transmission of demodulated reference signal in wireless communication technology field more particularly to sTTI, receive
Method, base station and user equipment.
Background technique
With the development of communication technology, in more and more application fields, such as game on line, virtual reality, industry inspection
The fields such as survey, car networking, the requirement to communication delay is higher and higher, and user it is expected that the end-to-end time delay of communication is shorter and shorter.
Currently, third generation cooperative partner program (The 3rdGeneration Partnership Project, 3GPP)
Started to the short transmission time interval (shortened for being based on long term evolution (Long Term Evolution, LTE)
Transmission Time Interval, sTTI) transmission technology studied and standardized, main study subject is frequency division
The length that duplexing (Frequency Division Duplexing, FDD) is supported is the sTTI of 2/4/7 symbol lengths, with
And the length supported of time division duplex (Time Division Duplexing, TDD) is the sTTI of 7 symbols.
In the prior art, downlink dedicated reference signal, the i.e. DRS (Dedicated Reference Signal) (UE-specific of user equipment
Reference signal) it is transmitted in most latter two symbol in a time slot of normal sub-frames.When using sTTI progress downlink
When data are transmitted, the DRS (Dedicated Reference Signal) of user equipment can not be transmitted, the transmission quality of downlink data is affected.
Summary of the invention
Problems solved by the invention is the DRS (Dedicated Reference Signal) that user equipment how is transmitted when using sTTI.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of transmission method of demodulated reference signal in sTTI,
It include: the information for obtaining the non-occupied resource of CRS in sTTI；It is used using the occupied resource transmission of CRS non-in the sTTI
The demodulated reference signal of family equipment.
Optionally, the demodulated reference signal using the occupied resource transmission user equipment of CRS non-in the sTTI,
It include: to transmit corresponding demodulated reference signal using the occupied OFDM symbol of CRS non-in the sTTI.
It is optionally, described to transmit corresponding demodulated reference signal using the occupied OFDM symbol of CRS non-in the sTTI,
It include: to use first OFDM in sTTI when the OFDM symbol occupied for non-CRS of first OFDM symbol in sTTI
The corresponding demodulated reference signal of symbol transmission.
Optionally, when subframe is to configure routine CP and subframe including 14 OFDM symbols, and each sTTI is including two
It is described to transmit corresponding demodulated reference signal, packet using the occupied OFDM symbol of CRS non-in the sTTI when OFDM symbol
It includes: transmitting corresponding demodulated reference signal using first OFDM symbol in second sTTI and the 7th sTTI；Use
Three sTTI, the 4th sTTI, the non-occupied OFDM symbol of CRS transmits corresponding solution in the 5th sTTI and the 6th sTTI
Adjust reference signal.
Optionally, the demodulated reference signal in each PRB occupied t easet ofasubcarriers be t easet ofasubcarriers 0,1,
4, the subset of subcarrier occupied by non-CRS in 5,6,7,10,11 }.
Optionally, the demodulated reference signal in each PRB occupied t easet ofasubcarriers { 0,1,6,7 } or 4,5,
10、11}。
Optionally, the demodulated reference signal using the occupied resource transmission user equipment of CRS non-in the sTTI,
It include: that the information of CRS occupied subcarrier in each PRB is determined based on cell identity information；Using first in sTTI
The non-occupied subcarrier of CRS transmits corresponding demodulated reference signal in OFDM symbol and each PRB.
Optionally, described using the occupied subcarrier transmission of CRS non-in first OFDM symbol in sTTI and each PRB
Corresponding demodulated reference signal, comprising: when the occupied t easet ofasubcarriers of CRS non-in PRB be t easet ofasubcarriers 0,1,4,5,6,
7, subset 10,11 }, and the corresponding number of subcarriers of the subset is greater than or equal to the son that transmission demodulated reference signal needs and carries
When the quantity of wave, the t easet ofasubcarriers that the subcarrier of corresponding number in the subset is constituted, as transmission demodulation reference letter
Number t easet ofasubcarriers；When the quantity of the corresponding subcarrier of the subset in PRB is needed less than transmission demodulated reference signal
Subcarrier quantity when, the subset is added in the subcarrier that respective numbers are chosen from the t easet ofasubcarriers { 2,3,8,9 }, as
Transmit the t easet ofasubcarriers of demodulated reference signal.
Optionally, when the corresponding number of subcarriers of the subset is equal to the number for the subcarrier that transmission demodulated reference signal needs
When amount, the subset is { 0,1,6,7 } or { 4,5,10,11 }.
Optionally, described using the occupied subcarrier transmission of CRS non-in first OFDM symbol in sTTI and each PRB
Corresponding demodulated reference signal, comprising: when the occupied t easet ofasubcarriers of CRS non-in PRB include { 0,1,6,7 } and 4,5,10,
11 } at least one when, using in PRB t easet ofasubcarriers { 0,1,6,7 } or { 4,5,10,11 } transmit corresponding demodulation reference and believe
Number.
Optionally, the subset is added in the subcarrier for choosing respective numbers from t easet ofasubcarriers { 2,3,8,9 }, as
Transmit the t easet ofasubcarriers of demodulated reference signal, comprising: choose respective numbers from the t easet ofasubcarriers { 2,3,8,9 }, and with institute
It states the neighbouring subcarrier of the subcarrier in subset and the subset is added, the t easet ofasubcarriers as transmission demodulated reference signal.
Optionally, described when the quantity of the corresponding subcarrier of the subset in PRB is less than transmission demodulated reference signal
When the quantity of the subcarrier needed, the subset is added from the subcarrier for choosing respective numbers in t easet ofasubcarriers { 2,3,8,9 },
T easet ofasubcarriers as transmission demodulated reference signal, comprising: when the occupied subcarrier of CRS includes t easet ofasubcarriers in PRB
When any two subcarrier in { 0,1,6,7 } or { 4,5,10,11 }, using t easet ofasubcarriers { 0,1,2,6,7,8 } or 3,4,
5, the non-occupied subcarrier of CRS transmits corresponding demodulated reference signal in 9,10,11 }.
The embodiment of the invention also provides a kind of method of reseptances of demodulated reference signal in sTTI, which comprises really
Determine the information of the occupied resource of demodulated reference signal in sTTI；Wherein, the occupied resource of the demodulated reference signal is non-
The occupied resource of CRS；Receive what base station was transmitted at the corresponding position of the occupied resource of demodulated reference signal in sTTI
Demodulated reference signal.
Optionally, the occupied resource of the demodulated reference signal is the non-occupied OFDM symbol of CRS in the sTTI.
Optionally, when the OFDM symbol occupied for non-CRS of first OFDM symbol in sTTI, the demodulation reference
The occupied resource of signal is first OFDM symbol in sTTI.
Optionally, when subframe is to configure routine CP and subframe including 14 OFDM symbols, and each sTTI is including two
When OFDM symbol, the occupied OFDM symbol of demodulated reference signal, comprising: in second sTTI and the 7th sTTI
One OFDM symbol；Third sTTI, the 4th sTTI, the non-occupied OFDM of CRS in the 5th sTTI and the 6th sTTI
Symbol.
Optionally, the occupied resource of the demodulated reference signal include: in each PRB occupied t easet ofasubcarriers be
The subset of subcarrier occupied by non-CRS in t easet ofasubcarriers { 0,1,4,5,6,7,10,11 }.
Optionally, the t easet ofasubcarriers that the occupied subcarrier of the demodulated reference signal is constituted, including in each PRB
T easet ofasubcarriers { 0,1,6,7 } or { 4,5,10,11 }.
Optionally, the occupied resource of the demodulated reference signal includes: first OFDM symbol and each PRB in sTTI
The interior occupied subcarrier of non-CRS.
Optionally, when the occupied t easet ofasubcarriers of CRS non-in PRB are t easet ofasubcarriers { 0,1,4,5,6,7,10,11 }
Subset, and the corresponding number of subcarriers of the subset be greater than or equal to transmission demodulated reference signal need subcarrier quantity
When, the occupied resource of demodulated reference signal includes the subcarrier of corresponding number in the subset；When described in PRB
When the quantity of the corresponding subcarrier of subset is less than the quantity for transmitting the subcarrier that demodulated reference signal needs, the demodulation reference letter
Number occupied resource includes choosing the subcarriers of respective numbers from t easet ofasubcarriers { 2,3,8,9 } subset is added to constitute
T easet ofasubcarriers in subcarrier.
Optionally, when the corresponding number of subcarriers of the subset is equal to the number for the subcarrier that transmission demodulated reference signal needs
When amount, the subset is { 0,1,6,7 } or { 4,5,10,11 }.
Optionally, when the corresponding number of subcarriers of the subset is equal to the number for the subcarrier that transmission demodulated reference signal needs
When amount, the occupied resource of demodulated reference signal includes the subcarrier in subset { 0,1,6,7 } or { 4,5,10,11 }.
Optionally, when the quantity of the corresponding subcarrier of the subset in PRB is needed less than transmission demodulated reference signal
Subcarrier quantity when, the occupied resource of demodulated reference signal includes, and chooses phase from t easet ofasubcarriers { 2,3,8,9 }
Answer the subcarrier of quantity that the subcarrier in the t easet ofasubcarriers that the subset is constituted is added.
Optionally, when in PRB the occupied subcarrier of CRS include in t easet ofasubcarriers { 0,1,6,7 } or { 4,5,10,11 }
Any two subcarrier when, the occupied resource of demodulated reference signal include the t easet ofasubcarriers { 0,1,2,6,7,8 } or
The non-occupied subcarrier of CRS is the occupied resource of the demodulated reference signal in { 3,4,5,9,10,11 }.
The embodiment of the invention also provides a kind of base station, the base station includes: acquiring unit, is suitable for obtaining non-in sTTI
The information of the occupied resource of CRS；Transmission unit, suitable for being set using the occupied resource transmission user of CRS non-in the sTTI
Standby demodulated reference signal.
Optionally, the transmission unit is suitable for transmitting using the occupied OFDM symbol of CRS non-in the sTTI corresponding
Demodulated reference signal.
Optionally, the transmission unit, suitable for being the occupied OFDM symbol of non-CRS when first OFDM symbol in sTTI
Number when, use first OFDM symbol in sTTI to transmit corresponding demodulated reference signal.
Optionally, the transmission unit, suitable for be configuration routine CP and subframe including 14 OFDM symbols when subframe, and
It is described corresponding using the occupied OFDM symbol transmission of CRS non-in the sTTI when each sTTI includes two OFDM symbols
Demodulated reference signal transmits corresponding demodulation reference using first OFDM symbol in second sTTI and the 7th sTTI and believes
Number；It is passed using the occupied OFDM symbol of CRS non-in third sTTI, the 4th sTTI, the 5th sTTI and the 6th sTTI
Defeated corresponding demodulated reference signal.
Optionally, the demodulated reference signal in each PRB occupied t easet ofasubcarriers be t easet ofasubcarriers 0,1,
4, the subset of subcarrier occupied by non-CRS in 5,6,7,10,11 }.
Optionally, the demodulated reference signal in each PRB occupied t easet ofasubcarriers { 0,1,6,7 } or 4,5,
10、11}。
Optionally,.Suitable for being based on cell identity information, the letter of CRS occupied subcarrier in each PRB is determined
Breath；Corresponding demodulation reference letter is transmitted using the occupied subcarrier of CRS non-in first OFDM symbol in sTTI and each PRB
Number.
Optionally, the transmission unit, be suitable for the non-occupied t easet ofasubcarriers of CRS in the PRB be t easet ofasubcarriers 0,
1, subset 4,5,6,7,10,11 }, and the corresponding number of subcarriers of the subset is greater than or equal to transmission demodulated reference signal and needs
When the quantity for the subcarrier wanted, the t easet ofasubcarriers that the subcarrier of corresponding number in the subset is constituted are solved as transmission
Adjust the t easet ofasubcarriers of reference signal；When the quantity of the corresponding subcarrier of the subset in PRB is less than transmission demodulation reference
When the quantity for the subcarrier that signal needs, described in the subcarrier addition from selection respective numbers in t easet ofasubcarriers { 2,3,8,9 }
Subset, the t easet ofasubcarriers as transmission demodulated reference signal.
Optionally, when the corresponding number of subcarriers of the subset is equal to the number for the subcarrier that transmission demodulated reference signal needs
When amount, the subset is { 0,1,6,7 } or { 4,5,10,11 }.
Optionally, the transmission unit, be suitable for the non-occupied t easet ofasubcarriers of CRS in the PRB include { 0,1,6,7 } and
{ 4,5,10,11 } at least one when, using in PRB t easet ofasubcarriers { 0,1,6,7 } or { 4,5,10,11 } transmit corresponding solution
Adjust reference signal.
Optionally, the transmission unit, is suitable for choosing from the t easet ofasubcarriers { 2,3,8,9 } respective numbers, and with it is described
The subset is added in the neighbouring subcarrier of subcarrier in subset, the t easet ofasubcarriers as transmission demodulated reference signal.
Optionally, the transmission unit, suitable in the PRB the occupied subcarrier of CRS include t easet ofasubcarriers 0,1,6,
When any two subcarrier 7 } or in { 4,5,10,11 }, using t easet ofasubcarriers { 0,1,2,6,7,8 } or 3,4,5,9,10,
11 } the non-occupied subcarrier of CRS transmits corresponding demodulated reference signal in.
The embodiment of the invention also provides a kind of user equipment, the user equipment comprises determining that demodulation reference in sTTI
The information of the occupied resource of signal；Wherein, the occupied resource of the demodulated reference signal is the occupied resource of non-CRS；
The demodulated reference signal transmitted base station is received at the corresponding position of the occupied resource of demodulated reference signal in sTTI.
Optionally, the occupied resource of the demodulated reference signal is the non-occupied OFDM symbol of CRS in the sTTI.
Optionally, when the OFDM symbol occupied for non-CRS of first OFDM symbol in sTTI, the demodulation reference
The occupied resource of signal is first OFDM symbol in sTTI.
Optionally, when subframe is to configure routine CP and subframe including 14 OFDM symbols, and each sTTI is including two
When OFDM symbol, the occupied OFDM symbol of demodulated reference signal, comprising: in second sTTI and the 7th sTTI
One OFDM symbol；Third sTTI, the 4th sTTI, the non-occupied OFDM of CRS in the 5th sTTI and the 6th sTTI
Symbol.
Optionally, the occupied resource of the demodulated reference signal include: in each PRB occupied t easet ofasubcarriers be
The subset of subcarrier occupied by non-CRS in t easet ofasubcarriers { 0,1,4,5,6,7,10,11 }.
Optionally, the t easet ofasubcarriers that the occupied subcarrier of the demodulated reference signal is constituted, including in each PRB
T easet ofasubcarriers { 0,1,6,7 } or { 4,5,10,11 }.
Optionally, the occupied resource of the demodulated reference signal includes: first OFDM symbol and each PRB in sTTI
The interior occupied subcarrier of non-CRS.
Optionally, when the occupied t easet ofasubcarriers of CRS non-in PRB are t easet ofasubcarriers { 0,1,4,5,6,7,10,11 }
Subset, and the corresponding number of subcarriers of the subset be greater than or equal to transmission demodulated reference signal need subcarrier quantity
When, the occupied resource of demodulated reference signal includes the subcarrier of corresponding number in the subset；When described in PRB
When the quantity of the corresponding subcarrier of subset is less than the quantity for transmitting the subcarrier that demodulated reference signal needs, the demodulation reference letter
Number occupied resource includes choosing the subcarriers of respective numbers from t easet ofasubcarriers { 2,3,8,9 } subset is added to constitute
T easet ofasubcarriers in subcarrier.
Optionally, when the corresponding number of subcarriers of the subset is equal to the number for the subcarrier that transmission demodulated reference signal needs
When amount, the subset is { 0,1,6,7 } or { 4,5,10,11 }.
Optionally, when the corresponding number of subcarriers of the subset is equal to the number for the subcarrier that transmission demodulated reference signal needs
When amount, the occupied resource of demodulated reference signal includes the subcarrier in subset { 0,1,6,7 } or { 4,5,10,11 }.
Optionally, when the quantity of the corresponding subcarrier of the subset in PRB is needed less than transmission demodulated reference signal
Subcarrier quantity when, the occupied resource of demodulated reference signal includes, and chooses phase from t easet ofasubcarriers { 2,3,8,9 }
Answer the subcarrier of quantity that the subcarrier in the t easet ofasubcarriers that the subset is constituted is added.
Optionally, when in PRB the occupied subcarrier of CRS include in t easet ofasubcarriers { 0,1,6,7 } or { 4,5,10,11 }
Any two subcarrier when, the occupied resource of demodulated reference signal include the t easet ofasubcarriers { 0,1,2,6,7,8 } or
The non-occupied subcarrier of CRS is the occupied resource of the demodulated reference signal in { 3,4,5,9,10,11 }.
Compared with prior art, the technical solution of the embodiment of the present invention has the advantages that
Above-mentioned scheme, when carrying out downlink data transmission using sTTI, by using occupied by non-CRS in the sTTI
Resource transmission user equipment demodulated reference signal, may be implemented the UE grade DRS (Dedicated Reference Signal) of corresponding downlink downlink pass
It is defeated, and conflicting between resource and the occupied resource of CRS used in the UE grade DRS (Dedicated Reference Signal) of downlink is avoided, under raising
The quality of row data transmission.
Further, when the OFDM symbol occupied for non-CRS of first OFDM symbol in sTTI, using in sTTI
First OFDM symbol transmit corresponding demodulated reference signal, user equipment can be made rapidly to receive demodulation reference letter
Number (De-Modulation Reference Signal, demodulated reference signal) and channel estimation is carried out, thus number can be improved
According to the speed of transmission.
Further, when subframe is to configure routine CP and subframe including 14 OFDM symbols, and each sTTI includes two
When a OFDM symbol, demodulated reference signal symbol in each PRB occupied t easet ofasubcarriers be { 0,1,6,7 } or 4,5,
10,11 }, it is possible to reduce demodulated reference signal conflicts with the occupied resource of CSI-RS, improves the efficiency of resource distribution.
Further, when subframe is to configure routine CP and subframe including 14 OFDM symbols, and each sTTI two
OFDM symbol, the non-occupied subcarrier of CRS transmits corresponding solution in using first OFDM symbol in sTTI and each PRB
Adjust reference signal when, when the occupied t easet ofasubcarriers of CRS non-in PRB include { 0,1,6,7 } and { 4,5,10,11 } at least one
When, using the t easet ofasubcarriers { 0,1,6,7 } or the corresponding demodulated reference signal of { 4,5,10,11 } transmission in PRB；When in PRB
When the occupied subcarrier of CRS includes any two subcarrier in t easet ofasubcarriers { 0,1,6,7 } or { 4,5,10,11 }, make
Corresponding demodulation is transmitted with the occupied subcarrier of CRS non-in t easet ofasubcarriers { 0,1,2,6,7,8 } or { 3,4,5,9,10,11 }
Reference signal, it is possible to reduce demodulated reference signal conflicts with the occupied resource of CSI-RS, improves the efficiency of resource distribution.
Detailed description of the invention
Fig. 1 is the flow chart of the transmission method of demodulated reference signal in one of embodiment of the present invention sTTI；
Fig. 2 is the flow chart of the transmission method of demodulated reference signal in another sTTI in the embodiment of the present invention；
Fig. 3 is the schematic diagram using the example of the transmission method of demodulated reference signal in sTTI shown in Fig. 2；
Fig. 4 is the position view for the RE that existing CSI-RS is occupied；
Fig. 5 is the flow chart of the transmission method of demodulated reference signal in another sTTI in the embodiment of the present invention；
Fig. 6 to Fig. 8 is in different CRS offsets using the transmission method of demodulated reference signal in sTTI shown in fig. 5
The schematic diagram of example；
Fig. 9 is the structural schematic diagram of one of embodiment of the present invention base station；
Figure 10 is the structural schematic diagram of one of embodiment of the present invention user equipment.
Specific embodiment
As described in the background art, in the prior art, when carrying out downlink data transmission using sTTI, and when sTTI is by one
When symbol before gap is constituted, due to lacking corresponding demodulated reference signal (DMRS) transmission plan so that user equipment without
Method carries out channel estimation etc., affects the transmission quality of downlink data.
Technical solution in the embodiment of the present invention is when carrying out downlink data transmission using sTTI, by using the sTTI
The dedicated ginseng of UE grade of corresponding downlink may be implemented in the demodulated reference signal of the interior occupied resource transmission user equipment of non-CRS
Examine the downlink transfer of signal, and avoid resource used in the UE grade DRS (Dedicated Reference Signal) of downlink and the occupied resource of CRS it
Between conflict, improve the quality of downlink data transmission.
It is understandable to enable above-mentioned purpose of the invention, feature and beneficial effect to become apparent, with reference to the accompanying drawing to this
The specific embodiment of invention is described in detail.
Fig. 1 shows the flow chart of the transmission method of demodulated reference signal in one of embodiment of the present invention sTTI.Ginseng
See Fig. 1, the transmission method of demodulated reference signal may include following step in the sTTI in the embodiment of the present invention:
Step S101: the information of the non-occupied resource of CRS in sTTI is obtained.
In specific implementation, in order to avoid with existing cell specific reference signal (Cell Reference Signal,
CRS resource used in) generates conflict, and base station can be first by obtaining the information of the occupied resource of CRS in sTTI, in turn
It can determine the information of the non-occupied resource of CRS in sTTI.
Step S102: the demodulated reference signal of the non-occupied resource transmission user equipment of CRS in the sTTI is used.
In specific implementation, base station, can be with non-in sTTI when determining the information of the non-occupied resource of CRS in sTTI
The DMRS of the occupied resource transmission user equipment of CRS, to avoid between the occupied resource of DMRS and the occupied resource of CRS
Conflict.
Above-mentioned scheme, when carrying out downlink data transmission using sTTI, by using occupied by non-CRS in the sTTI
Resource transmission user equipment demodulated reference signal, the downlink transfer of the demodulated reference signal of user equipment may be implemented, and
Conflicting between resource used in the demodulated reference signal of user equipment and the occupied resource of CRS is avoided, communication system is improved
The compatibility of system improves the transmission quality of downlink data.
Below in conjunction with the transmission method of demodulated reference signal in the sTTI in the specific embodiment embodiment of the present invention
It is further described in detail.
It in an embodiment of the present invention, can be from orthogonal frequency division multiplexing (Orthogonal Frequency Division
Multiplexing OFDM) symbol level, it avoids the generation of used resource conflicts between DMRS and CRS in sTTI, namely
Transmitting used OFDM symbol when DMRS is remaining OFDM symbol except the occupied OFDM symbol of CRS in sTTI.
Referring to fig. 2, in one of embodiment of the present invention sTTI demodulated reference signal transmission method, adopted suitable for base station
When carrying out downlink data transmission with sTTI, to the corresponding DMRS of user device transmissions, it can specifically be realized using following step:
Step S201: the information of the non-occupied OFDM symbol of CRS in sTTI is obtained.
In specific implementation, in order to avoid the occupied OFDM symbol of DMRS in sTTI and the occupied OFDM symbol of CRS
Between conflict, base station can determine that CRS is in occupied OFDM symbol in sTTI first, and then can determine non-in sTTI
The information of the occupied OFDM symbol of CRS.
Step S202: corresponding DMRS symbol is transmitted using the occupied OFDM symbol of CRS non-in the sTTI.
In specific implementation, base station can be used non-in sTTI when determining in sTTI the occupied OFDM symbol of non-CRS
The occupied OFDM symbol of CRS transmits corresponding DMRS symbol, to avoid CRS in sTTI occupied OFDM symbol and DMRS
Conflict between occupied DMRS symbol.
It below will include the subframe of 14 OFDM symbols with configuration routine CP, every two OFDM symbol is as a sTTI
Example, is introduced the transmission method of demodulated reference signal in sTTI shown in Fig. 2.
Referring to Fig. 3, for first shortening Transmission Time Interval sTTI0, in two OFDM symbols be used to conduct
The control symbol of physical downlink control channel PDCCH, in order to avoid resource contention, first shortening Transmission Time Interval sTTI0
Two interior OFDM symbols are not used in transmission DMRS.
For Transmission Time Interval sTTI1 and the 7th shortening Transmission Time Interval sTTI6 of second shortening, because of second
Shorten two OFDM symbols in Transmission Time Interval sTTI1 and the 7th two shortened in Transmission Time Interval sTTI6
OFDM symbol is the symbol where non-CRS, thus can be shortened using second any one in Transmission Time Interval sTTI1
A OFDM symbol and the 7th any one OFDM symbol shortened in Transmission Time Interval sTTI6 transmit corresponding DMRS respectively
Symbol.In an embodiment of the present invention, in order to further increase the speed that data are transmitted, when can be transmitted using second shortening
Between be spaced first OFDM symbol in first OFDM symbol in sTTI1 and the 7th shortenings Transmission Time Interval sTTI6 and divide
The defeated corresponding DMRS symbol of supplementary biography can make user set by the way that DMRS symbol is placed on first OFDM symbol in sTTI1
It is standby to receive DMRS as soon as possible and carry out channel estimation, thus accelerate the channel estimation of entire sTTI, demodulating process, so as to
Improve the transmission speed of downlink data.
Transmission Time Interval sTT2 and the 5th shortening Transmission Time Interval sTT4 is shortened for third, in both
First OFDM symbol is occupied by CRS, thus can be transmitted respectively using second OFDM symbol in itself corresponding
DMRS symbol.
For Transmission Time Interval sTT3 and the 6th shortening Transmission Time Interval sTT5 of the 4th shortening, in both
Second OFDM symbol is occupied by CRS, thus can transmit corresponding DMRS using first OFDM symbol in itself respectively
Symbol.
In specific implementation, DMRS on 4 RE can using with the reference signal (RS) of existing user equipment equally
CDMA (Code Division Multiple Access, CDMA) mechanism, to support mutiple antennas port, most 4 numbers of plies
According to transmission, i.e. each antenna port distributes the orthogonal code that length is 4.Wherein, orthogonal code and resource element (RE) it
Between corresponding relationship can be corresponding according to the sequence of subcarrier number from small to large, or according to subcarrier number from big to small suitable
Ordered pair Ying Yike.
It in specific implementation, can when transmitting corresponding DMRS symbol using the occupied OFDM symbol of CRS non-in sTTI
Conflicting between DMRS symbol and the occupied subcarrier of CSI-RS in PRB is reduced to pass through, to reduce DMRS for existing
The influence of CSI-RS configuration improves the efficiency of resource distribution to reduce the complexity of resource distribution.
Referring to Fig. 3 and Fig. 4, in order to reduce the occupied resource of DMRS symbol and channel state information reference in PRB in PRB
The conflict of signal (Channel State Information-Reference Signals, CSI-RS) occupied resource,
In one embodiment of the invention, the occupied t easet ofasubcarriers of DMRS are { 4,5,10,11 }.
When the occupied t easet ofasubcarriers of DMRS are { 4,5,10,11 }, so that the occupied resource of DMRS symbol is in son
The the 6th and the 7th OFDM symbol in frame and the 12nd and the 13rd OFDM symbol will not be with existing CSI-RS's
Resource generates conflict, and is only the resource contention for having part in symbol the tenth and the 11st OFDM symbol.
In an alternative embodiment of the invention, t easet ofasubcarriers occupied for DMRS be { 0,1,6,7 } situation with
The occupied t easet ofasubcarriers of DMRS are that { 4,5,10,11 } are similar, are repeated no more.
From the above description it can be seen that when the occupied t easet ofasubcarriers of DMRS are { 0,1,6,7 } or { 4,5,10,11 }
When, it is possible to reduce the CSI-RS of 4 single ports or two-port, 24 ports is configured or the CSI-RS of 18 port configuration, from
And the influence that DMRS configures CSI-RS can be reduced to the full extent, so as to reduce the complexity of resource distribution, mention
The efficiency of high resource distribution.
In specific implementation, in order to further increase the speed that data are transmitted, first symbol in sTTI can be used
Start in DMRS, and then from subcarrier level, avoids conflicting with existing using the occupied resource generation of CRS in sTTI.
Fig. 5 shows the transmission method of DMRS in another sTTI in the embodiment of the present invention, may include following step
It is rapid:
Step S501: it is based on cell identity information, determines the information of CRS occupied subcarrier in each PRB.
In specific implementation, base station can determine CRS occupied son in each PRB by cell ID Cell-ID
The information of carrier wave, then by the information of identified CRS occupied subcarrier in each PRB, can determine in also PRB
The information of the non-occupied subcarrier of CRS.
Step S502: using the occupied subcarrier transmission pair of CRS non-in first OFDM symbol in sTTI and each PRB
The DMRS symbol answered.
In specific implementation, in order to which user equipment can carry out channel estimation as soon as possible, accelerate the stream of data demodulation, decoding
Journey, so that the speed of downlink data transmission is improved, it can be using non-CRS institute in first OFDM symbol in sTTI and each PRB
The subcarrier of occupancy transmits corresponding DMRS, passes through what the occupied subcarrier of DMRS and the occupied subcarrier of CRS were staggered
Mode, can be to avoid conflicting between the occupied resource of DMRS and the occupied resource of existing CRS.
In specific implementation, DMRS on 4 RE can using with the reference signal (RS) of existing user equipment equally
CDMA (Code Division Multiple Access, CDMA) mechanism, to support mutiple antennas port, most four layers
The transmission of data, i.e. each antenna port distribute the orthogonal code that a length is 4.Wherein, orthogonal code and resource element (RE)
Between corresponding relationship can be corresponding according to the sequence of subcarrier number from small to large, or from big to small according to subcarrier number
Sequence is corresponding.
Equally to configure routine CP and the subframe comprising 14 OFDM symbols, for each sTTI is including 2 OFDM symbols,
DMRS transmission method in sTTI shown in fig. 5 is introduced.
When the occupied t easet ofasubcarriers of CRS non-in PRB include { 0,1,6,7 } and { 4,5,10,11 } at least one when, then
T easet ofasubcarriers { 0,1,6,7 } or corresponding 4 RE of { 4,5,10,11 } corresponding subcarrier in PRB can be used to make respectively
For corresponding 4 RE of DMRS.
When the occupied subcarrier of CRS includes any in t easet ofasubcarriers { 0,1,6,7 } or { 4,5,10,11 } in PRB
When two subcarriers, the occupied sub- load of CRS non-in t easet ofasubcarriers { 0,1,2,6,7,8 } or { 3,4,5,9,10,11 } is used
Wave transmits corresponding DMRS symbol.
It, not only can be occupied with DMRS to avoid CRS using the configuration mode of the pattern of above-mentioned DMRS character position
The conflict of resource, and 4 single ports or two-port, the CSI-RS configuration of 24 ports or 18 port can be reduced
CSI-RS configuration, so as to reduce the influence that DMRS configures CSI-RS to the full extent, matches so as to reduce resource
The complexity set improves the efficiency of resource distribution.
It is 4 ports and sub-frame configuration routine CP that Fig. 6 to Fig. 8, which shows CRS, in the case where different CRS offsets, according to upper
The schematic diagram for the DMRS pilot tone pattern that the mode stated obtains.
Referring to Fig. 6, when CRS offset is 0, since the occupied t easet ofasubcarriers of CRS are { 0,3,6,9 } in PRB, namely
The occupied t easet ofasubcarriers of CRS do not include t easet ofasubcarriers { 4,5,10,11 }.Therefore, it is possible to using t easet ofasubcarriers 4,5,
10, corresponding DMRS symbol 11 } is transmitted.
Referring to Fig. 7, when CRS offset is 1, since the occupied t easet ofasubcarriers of CRS are { 1,4,7,10 } in PRB,
That is the occupied subcarrier of CRS respectively includes the load of any two in t easet ofasubcarriers { 0,1,6,7 } and { 4,5,10,11 }
Wave.Therefore, it is possible to use the non-occupied subcarrier transmission of CRS in { 0,1,2,6,7,8 } or { 3,4,5,9,10,11 } corresponding
The corresponding DMRS symbol of DMRS symbol transmission, namely t easet ofasubcarriers { 0,2,6,8 } or { 3,5,9,11 } can be used.
To use the non-occupied subcarrier of CRS in t easet ofasubcarriers { 3,4,5,9,10,11 } to transmit corresponding DMRS symbol
For number corresponding DMRS symbol of transmission, specifically, for second shortenings Transmission Time Interval sTTI1, the 4th shortening biography
Transmission Time Interval sTTI5 and the 7th defeated time interval sTTI3, the 6th shortening shortening Transmission Time Interval sTTI6, due to
CRS is without occupying second shortening Transmission Time Interval sTTI1, the 4th shortening Transmission Time Interval sTTI3, the 6th contracting
The corresponding subcarrier of first OFDM symbol of short transmission time interval sTTI5 and the 7th shortening Transmission Time Interval sTTI6,
It thus can be using t easet ofasubcarriers { 4,5,10,11 } corresponding 4 RE respectively as 4 RE of DMRS；It contracts for third
Short transmission time interval sTTI2 and the 5th shortening Transmission Time Interval sTTI4 shortens biography since CRS occupies third respectively
Defeated time interval sTTI2 and the 5th corresponding subcarrier structure of first OFDM symbol shortened in Transmission Time Interval sTTI4
At t easet ofasubcarriers be { 1,4,7,10 }, thus can be using removing subcarrier in t easet ofasubcarriers { 3,4,5,9,10,11 }
Gather { 4,7 } remaining subcarrier afterwards, i.e., corresponding 4 RE of t easet ofasubcarriers { 3,5,9,11 } are respectively as DMRS in 4 RE.
Referring to Fig. 8, when CRS offset is 2, since the occupied t easet ofasubcarriers of CRS are { 2,5,8,11 } in PRB,
That is the occupied subcarrier of CRS respectively includes two subcarriers in t easet ofasubcarriers { 4,5,10,11 }.Therefore, it is possible to use
The occupied subcarrier of non-CRS transmits the corresponding DMRS symbol of corresponding DMRS symbol transmission in { 3,4,5,9,10,11 }, namely
4 REs of the corresponding RE of t easet ofasubcarriers { 3,5,9,11 } as DMRS can be used.
To use the non-occupied subcarrier of CRS in t easet ofasubcarriers { 3,4,5,9,10,11 } to transmit corresponding DMRS symbol
For number corresponding DMRS symbol of transmission, specifically, for second shortenings Transmission Time Interval sTTI1, the 4th shortening biography
Transmission Time Interval sTTI5 and the 7th defeated time interval sTTI3, the 6th shortening shortening Transmission Time Interval sTTI6, due to
CRS does not occupy second shortening Transmission Time Interval sTTI1, the 4th shortening Transmission Time Interval sTTI3, the 6th shortening
Transmission Time Interval sTTI5 and the 7th corresponding subcarrier of first OFDM symbol shortened in Transmission Time Interval sTTI6,
It can thus use t easet ofasubcarriers { 4,5,10,11 } corresponding 4 RE respectively as DMRS in 4 RE；It contracts for third
Short transmission time interval sTTI2 and the 5th shortening Transmission Time Interval sTTI4, since the CRS third occupied respectively shortens
Transmission Time Interval sTTI2 and the 5th corresponding subcarrier of first OFDM symbol shortened in Transmission Time Interval sTTI4
The t easet ofasubcarriers of composition are { 2,5,8,11 }, thus can be carried using son is removed in t easet ofasubcarriers { 3,4,5,9,10,11 }
Remaining subcarrier after wave set { 5,11 }, i.e., corresponding 4 RE of t easet ofasubcarriers { 3,4,9,10 } are respectively as DMRS at 4
RE。
The case where being respectively 3,4,5 for CRS offset, respectively refers to the situation that CRS offset is respectively 0,1,2 and executes, no longer
It repeats.
It is to be herein pointed out above-mentioned only to configure the subframe that routine CP includes 14 OFDM symbols, each subframe packet
7 sTTI are included, for every 2 OFDM symbols constitute a sTTI, to the transmission side of DMRS in the sTTI in the embodiment of the present invention
Method is described in detail.It will be appreciated by those skilled in the art that including 12 OFDM symbols for configuration extension CP
Number subframe and sTTI and PRB including 7 OFDM symbols in sTTI pattern configurations difference when, be equally also referred to
Above-mentioned mode carries out the configuration of the pattern of DMRS character position, and details are not described herein.
The transmission method of DMRS is described in detail in the above-mentioned sTTI in the embodiment of the present invention, and user is set
It is standby, when carrying out the reception of DMRS, the information of the position of the symbol of DMRS can be determined first, is such as carried out according to the agreement of agreement
It determines, corresponding DMRS is received at the position where the symbol of identified DMRS, and carries out channel estimation etc., specifically
The position of the symbol of DMRS, referring in particular to the introduction in the transmission method of DMRS in the corresponding sTTI of base station side, herein no longer
It repeats.
The above-mentioned corresponding device of method will be further described in detail below.
Fig. 9 shows one of embodiment of the present invention base station.Referring to Fig. 9, one of embodiment of the present invention base station 900
It may include acquiring unit 901 and transmission unit 902, in which:
The acquiring unit 901, suitable for obtaining the information of the non-occupied resource of CRS in sTTI；
The transmission unit 902, suitable for using the demodulation of the non-occupied resource transmission user equipment of CRS in the sTTI
Reference signal.
In specific implementation, the transmission unit 902 is suitable for using the non-occupied OFDM symbol of CRS in the sTTI
Transmit the symbol of corresponding demodulated reference signal.
In specific implementation, the transmission unit 902, suitable for being shared by non-CRS when first OFDM symbol in sTTI
When OFDM symbol, the symbol of corresponding demodulated reference signal is transmitted using first OFDM symbol in sTTI.
In an embodiment of the present invention, when subframe is to configure routine CP and subframe including 14 OFDM symbols, and each
When sTTI includes two OFDM symbols, the transmission unit, suitable for using first in second sTTI and the 7th sTTI
OFDM symbol transmits the symbol of corresponding demodulated reference signal；Use third sTTI, the 4th sTTI, the 5th sTTI and
The non-occupied OFDM symbol of CRS transmits the symbol of corresponding demodulated reference signal in six sTTI.
In an embodiment of the present invention, the symbol of the demodulated reference signal occupied subcarrier collection in each PRB
It is combined into the subset of subcarrier occupied by non-CRS in t easet ofasubcarriers { 0,1,4,5,6,7,10,11 }.
In an embodiment of the present invention, the symbol of the demodulated reference signal occupied subcarrier collection in each PRB
It closes { 0,1,6,7 } or { 4,5,10,11 }.
In specific implementation, the transmission unit 902 is suitable for being based on cell identity information, determines CRS in each PRB
The information of occupied subcarrier；It is passed using the occupied subcarrier of CRS non-in first OFDM symbol in sTTI and each PRB
The symbol of defeated corresponding demodulated reference signal.
In specific implementation, the transmission unit 902, optionally, the transmission unit is suitable for working as in PRB shared by non-CRS
T easet ofasubcarriers are the subset of t easet ofasubcarriers { 0,1,4,5,6,7,10,11 }, and the corresponding sub-carrier number of the subset
When amount is greater than or equal to the quantity for the subcarrier that transmission DMRS needs, the subcarrier of corresponding number in the subset is constituted
T easet ofasubcarriers, the t easet ofasubcarriers as transmission demodulated reference signal；When the corresponding subcarrier of the subset in PRB
When quantity is less than the quantity for transmitting the subcarrier that DMRS needs, from the son for choosing respective numbers in t easet ofasubcarriers { 2,3,8,9 }
The subset is added in carrier wave, the t easet ofasubcarriers as transmission demodulated reference signal.
In an embodiment of the present invention, when the corresponding number of subcarriers of the subset is equal to the subcarrier that transmission DMRS needs
Quantity when, the subset be { 0,1,6,7 } or { 4,5,10,11 }.
In an embodiment of the present invention, the transmission unit 902 is suitable for when the non-occupied t easet ofasubcarriers of CRS in PRB
Including { 0,1,6,7 } and { 4,5,10,11 } at least one when, using in PRB t easet ofasubcarriers { 0,1,6,7 } or 4,5,10,
11 } corresponding demodulated reference signal is transmitted.
In an embodiment of the present invention, the transmission unit 902 is suitable for choosing phase from t easet ofasubcarriers { 2,3,8,9 }
Quantity is answered, and the subset is added with the neighbouring subcarrier of the subcarrier in the subset, as transmission demodulated reference signal
T easet ofasubcarriers.
In an embodiment of the present invention, the transmission unit 902 is suitable for when the occupied subcarrier of CRS includes son in PRB
When any two subcarrier in carrier set { 0,1,6,7 } or { 4,5,10,11 }, using t easet ofasubcarriers 0,1,2,6,7,
8 } or in { 3,4,5,9,10,11 } the non-occupied subcarrier of CRS transmits corresponding demodulated reference signal.
The structure of the above-mentioned corresponding user equipment in base station will be introduced below.
Referring to Figure 10, one of embodiment of the present invention user equipment 10 can include determining that unit 101 and receiving unit
102, in which:
The determination unit 101 is adapted to determine that the information of the occupied resource of DMRS in sTTI；Wherein, the DMRS institute
The resource of occupancy is the occupied resource of non-CRS；
The receiving unit 102 is passed suitable for receiving base station at the corresponding position of the occupied resource of DMRS in sTTI
Defeated DMRS.
In specific implementation, the occupied resource of the DMRS can be the occupied OFDM symbol of CRS non-in the sTTI
Number.
In specific implementation, described when the OFDM symbol occupied for non-CRS of first OFDM symbol in sTTI
The occupied resource of DMRS is first OFDM symbol in sTTI.
In an embodiment of the present invention, when subframe is to configure routine CP and subframe including 14 OFDM symbols, and each
When sTTI includes two OFDM symbols, the occupied OFDM symbol of DMRS, comprising: in second sTTI and the 7th sTTI
First OFDM symbol；Third sTTI, the 4th sTTI, non-CRS is occupied in the 5th sTTI and the 6th sTTI
OFDM symbol.
In specific implementation, the occupied resource of the DMRS include: in each PRB occupied t easet ofasubcarriers for son
The subset of subcarrier occupied by non-CRS in carrier set { 0,1,4,5,6,7,10,11 }.
In an embodiment of the present invention, the occupied subcarrier of the DMRS includes: the t easet ofasubcarriers in each PRB
{ 0,1,6,7 } or { 4,5,10,11 }.
In an embodiment of the present invention, the occupied resource of the DMRS includes: first OFDM symbol and every in sTTI
The non-occupied subcarrier of CRS in a PRB.
In specific implementation, when the occupied t easet ofasubcarriers of CRS non-in PRB be t easet ofasubcarriers 0,1,4,5,6,7,
10, subset 11 }, and the corresponding number of subcarriers of the subset is greater than or equal to the quantity for the subcarrier that transmission DMRS needs
When, the occupied resource of DMRS includes the subcarrier of corresponding number in the subset；When the subset in PRB is corresponding
Subcarrier quantity less than transmission DMRS need subcarrier quantity when, the occupied resource of DMRS includes from sub- load
The subcarrier in the t easet ofasubcarriers that the subset is constituted is added in the subcarrier of selection respective numbers in wave set { 2,3,8,9 }.
In an embodiment of the present invention, when the corresponding number of subcarriers of the subset is equal to the subcarrier that transmission DMRS needs
Quantity when, the subset be { 0,1,6,7 } or { 4,5,10,11 }.
In an embodiment of the present invention, when the corresponding number of subcarriers of the subset is equal to the subcarrier that transmission DMRS needs
Quantity when, the occupied resource of DMRS includes the subcarrier in subset { 0,1,6,7 } or { 4,5,10,11 }.
In specific implementation, it is needed when the quantity of the corresponding subcarrier of the subset in PRB less than transmission DMRS
When the quantity of subcarrier, the occupied resource of DMRS includes that the son of respective numbers is chosen from t easet ofasubcarriers { 2,3,8,9 }
The subcarrier in the t easet ofasubcarriers that the subset is constituted is added in carrier wave
In an embodiment of the present invention, when in PRB the occupied subcarrier of CRS include t easet ofasubcarriers { 0,1,6,7 } or
When any two subcarrier in { 4,5,10,11 }, the occupied resource of DMRS include the t easet ofasubcarriers 0,1,2,6,7,
8 } or in { 3,4,5,9,10,11 } the non-occupied subcarrier of CRS is the occupied resource of the DMRS.
Using the above scheme in the embodiment of the present invention, when carrying out downlink data transmission using sTTI, by using institute
The demodulated reference signal for stating the non-occupied resource transmission user equipment of CRS in sTTI, may be implemented the UE grade of corresponding downlink
The downlink transfer of DRS (Dedicated Reference Signal), and avoid resource used in the demodulated reference signal of user equipment and CRS occupied
Conflict between resource improves the transmission quality of downlink data.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can be stored in a computer readable storage medium, storage
Medium may include: ROM, RAM, disk or CD etc..
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (20)
1. the transmission method of demodulated reference signal in a kind of sTTI characterized by comprising
Obtain the information of the non-occupied resource of CRS in sTTI；
Use the demodulated reference signal of the occupied resource transmission user equipment of CRS non-in the sTTI；
The demodulated reference signal using the occupied resource transmission user equipment of CRS non-in the sTTI, comprising: based on small
Area's identification information determines the information of CRS occupied subcarrier in each PRB；Using first OFDM symbol in sTTI and
The non-occupied subcarrier of CRS transmits corresponding demodulated reference signal in each PRB；
It is described that corresponding demodulation is transmitted using the occupied subcarrier of CRS non-in first OFDM symbol in sTTI and each PRB
Reference signal, comprising: when the occupied t easet ofasubcarriers of CRS non-in PRB are t easet ofasubcarriers { 0,1,4,5,6,7,10,11 }
Subset, and the corresponding number of subcarriers of the subset is greater than or equal to the quantity for the subcarrier that transmission demodulated reference signal needs
When, the t easet ofasubcarriers that the subcarrier of corresponding number in the subset is constituted, the son as transmission demodulated reference signal carries
Wave set；When the quantity of the corresponding subcarrier of the subset in PRB is less than the subcarrier that transmission demodulated reference signal needs
Quantity when, the subset is added in the subcarrier that respective numbers are chosen from the t easet ofasubcarriers { 2,3,8,9 }, demodulates as transmission
The t easet ofasubcarriers of reference signal.
2. the transmission method of demodulated reference signal in sTTI according to claim 1, which is characterized in that when the subset pair
The number of subcarriers answered be equal to transmission demodulated reference signal need subcarrier quantity when, the subset be { 0,1,6,7 } or
{4、5、10、11}。
3. the transmission method of demodulated reference signal in sTTI according to claim 2, which is characterized in that described to use sTTI
The non-occupied subcarrier of CRS transmits corresponding demodulated reference signal in interior first OFDM symbol and each PRB, comprising:
When the occupied t easet ofasubcarriers of CRS non-in PRB include { 0,1,6,7 } and { 4,5,10,11 } at least one when, use
T easet ofasubcarriers { 0,1,6,7 } or { 4,5,10,11 } in PRB transmit corresponding demodulated reference signal.
4. the transmission method of demodulated reference signal in sTTI according to claim 1, which is characterized in that described from subcarrier
Gather the subcarrier addition subset that { 2,3,8,9 } choose respective numbers, the subcarrier collection as transmission demodulated reference signal
It closes, comprising: from selection respective numbers in t easet ofasubcarriers { 2,3,8,9 }, and the son neighbouring with the subcarrier in the subset carries
The subset is added in wave, the t easet ofasubcarriers as transmission demodulated reference signal.
5. the transmission method of demodulated reference signal in sTTI according to claim 4, which is characterized in that described when in PRB
The corresponding subcarrier of the subset quantity less than transmission demodulated reference signal need subcarrier quantity when, from sub- load
The subset is added in the subcarrier that respective numbers are chosen in wave set { 2,3,8,9 }, and the son as transmission demodulated reference signal carries
Wave set, comprising:
When the occupied subcarrier of CRS includes any two in t easet ofasubcarriers { 0,1,6,7 } or { 4,5,10,11 } in PRB
When subcarrier, passed using the occupied subcarrier of CRS non-in t easet ofasubcarriers { 0,1,2,6,7,8 } or { 3,4,5,9,10,11 }
Defeated corresponding demodulated reference signal.
6. the method for reseptance of demodulated reference signal in a kind of sTTI characterized by comprising
Determine the information of the occupied resource of demodulated reference signal in sTTI；Wherein, the occupied money of the demodulated reference signal
Source is the occupied resource of non-CRS；
The demodulated reference signal transmitted base station is received at the corresponding position of the occupied resource of demodulated reference signal in sTTI；
The occupied resource of demodulated reference signal includes: in sTTI in first OFDM symbol and each PRB shared by non-CRS
Subcarrier；
When the subset that the occupied t easet ofasubcarriers of CRS non-in PRB are t easet ofasubcarriers { 0,1,4,5,6,7,10,11 }, and institute
When stating the quantity for the subcarrier that the corresponding number of subcarriers of subset is greater than or equal to transmission demodulated reference signal needs, the demodulation
The occupied resource of reference signal includes the subcarrier of corresponding number in the subset；
When the quantity of the corresponding subcarrier of the subset in PRB is less than the number for transmitting the subcarrier that demodulated reference signal needs
When amount, the occupied resource of demodulated reference signal includes that the son of respective numbers is chosen from t easet ofasubcarriers { 2,3,8,9 }
The subcarrier in the t easet ofasubcarriers that the subset is constituted is added in carrier wave.
7. the method for reseptance of demodulated reference signal in sTTI according to claim 6, which is characterized in that when the subset pair
The number of subcarriers answered be equal to transmission demodulated reference signal need subcarrier quantity when, the subset be { 0,1,6,7 } or
{4、5、10、11}。
8. the method for reseptance of demodulated reference signal in sTTI according to claim 7, which is characterized in that when the subset pair
When the number of subcarriers answered is equal to the quantity for the subcarrier that transmission demodulated reference signal needs, occupied by the demodulated reference signal
Resource include subcarrier in subset { 0,1,6,7 } or { 4,5,10,11 }.
9. the method for reseptance of demodulated reference signal in sTTI according to claim 6, which is characterized in that when the institute in PRB
When the quantity of the corresponding subcarrier of the subset stated is less than the quantity for transmitting the subcarrier that demodulated reference signal needs, the demodulation ginseng
Examining the occupied resource of signal includes, and the subset is added in the subcarrier for choosing respective numbers from t easet ofasubcarriers { 2,3,8,9 }
Subcarrier in the t easet ofasubcarriers of composition.
10. the method for reseptance of demodulated reference signal in sTTI according to claim 9, which is characterized in that as CRS in PRB
When occupied subcarrier includes any two subcarrier in t easet ofasubcarriers { 0,1,6,7 } or { 4,5,10,11 }, demodulation ginseng
Examining the occupied resource of signal includes in the t easet ofasubcarriers { 0,1,2,6,7,8 } or { 3,4,5,9,10,11 } shared by non-CRS
Subcarrier is the occupied resource of the demodulated reference signal.
11. a kind of base station characterized by comprising
Acquiring unit, suitable for obtaining the information of the non-occupied resource of CRS in sTTI；
Transmission unit, be suitable for the non-occupied t easet ofasubcarriers of CRS in the PRB be t easet ofasubcarriers 0,1,4,5,6,7,
10, subset 11 }, and the corresponding number of subcarriers of the subset is greater than or equal to the subcarrier that transmission demodulated reference signal needs
Quantity when, by the subset corresponding number subcarrier constitute t easet ofasubcarriers, as transmission demodulated reference signal
T easet ofasubcarriers；It is needed when the quantity of the corresponding subcarrier of the subset in PRB less than transmission demodulated reference signal
When the quantity of subcarrier, the subset is added from the subcarrier for choosing respective numbers in t easet ofasubcarriers { 2,3,8,9 }, as biography
The t easet ofasubcarriers of defeated demodulated reference signal.
12. base station according to claim 11, which is characterized in that when the corresponding number of subcarriers of the subset is equal to transmission
When the quantity for the subcarrier that demodulated reference signal needs, the subset is { 0,1,6,7 } or { 4,5,10,11 }.
13. base station according to claim 12, which is characterized in that the transmission unit is suitable for working as in PRB shared by non-CRS
T easet ofasubcarriers include { 0,1,6,7 } and { 4,5,10,11 } at least one when, using in PRB t easet ofasubcarriers 0,1,
6,7 } or { 4,5,10,11 } transmit corresponding demodulated reference signal.
14. base station according to claim 11, which is characterized in that the transmission unit, be suitable for from t easet ofasubcarriers 2,3,
8, respective numbers are chosen in 9 }, and the subset is added with the neighbouring subcarrier of the subcarrier in the subset, are solved as transmission
Adjust the t easet ofasubcarriers of reference signal.
15. base station according to claim 14, which is characterized in that the transmission unit is suitable for working as in PRB occupied by CRS
Subcarrier when including any two subcarrier in t easet ofasubcarriers { 0,1,6,7 } or { 4,5,10,11 }, use subcarrier collection
It closes the non-occupied subcarrier of CRS in { 0,1,2,6,7,8 } or { 3,4,5,9,10,11 } and transmits corresponding demodulated reference signal.
16. a kind of user equipment characterized by comprising
Determine the information of the occupied resource of demodulated reference signal in sTTI；Wherein, the occupied money of the demodulated reference signal
Source is the occupied resource of non-CRS；
The demodulated reference signal transmitted base station is received at the corresponding position of the occupied resource of demodulated reference signal in sTTI；
The occupied resource of demodulated reference signal includes: in sTTI in first OFDM symbol and each PRB shared by non-CRS
Subcarrier；
When the subset that the occupied t easet ofasubcarriers of CRS non-in PRB are t easet ofasubcarriers { 0,1,4,5,6,7,10,11 }, and institute
When stating the quantity for the subcarrier that the corresponding number of subcarriers of subset is greater than or equal to transmission demodulated reference signal needs, the demodulation
The occupied resource of reference signal includes the subcarrier of corresponding number in the subset；
When the quantity of the corresponding subcarrier of the subset in PRB is less than the number for transmitting the subcarrier that demodulated reference signal needs
When amount, the occupied resource of demodulated reference signal includes that the son of respective numbers is chosen from t easet ofasubcarriers { 2,3,8,9 }
The subcarrier in the t easet ofasubcarriers that the subset is constituted is added in carrier wave.
17. user equipment according to claim 16, which is characterized in that when the corresponding number of subcarriers of the subset is equal to
When transmitting the quantity for the subcarrier that demodulated reference signal needs, the subset is { 0,1,6,7 } or { 4,5,10,11 }.
18. user equipment according to claim 17, which is characterized in that when the corresponding number of subcarriers of the subset is equal to
Transmit demodulated reference signal need subcarrier quantity when, the occupied resource of demodulated reference signal include subset 0,
1,6,7 } or the subcarrier in { 4,5,10,11 }.
19. user equipment according to claim 16, which is characterized in that when the corresponding sub- load of the subset in PRB
When the quantity of wave is less than the quantity for transmitting the subcarrier that demodulated reference signal needs, the occupied resource of demodulated reference signal
Including the subcarrier for choosing respective numbers from t easet ofasubcarriers { 2,3,8,9 } is added in the t easet ofasubcarriers that the subset is constituted
Subcarrier.
20. user equipment according to claim 19, which is characterized in that when the occupied subcarrier of CRS includes son in PRB
When any two subcarrier in carrier set { 0,1,6,7 } or { 4,5,10,11 }, the occupied resource packet of demodulated reference signal
Including the non-occupied subcarrier of CRS in the t easet ofasubcarriers { 0,1,2,6,7,8 } or { 3,4,5,9,10,11 } is the demodulation
The occupied resource of reference signal.
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| CN107733594B (en) * | 2016-08-10 | 2020-09-22 | 电信科学技术研究院 | Resource mapping method of demodulation reference signal, base station and terminal |
| CN109039555B (en) * | 2017-06-10 | 2020-12-29 | 上海朗帛通信技术有限公司 | Method and device used in user and base station of wireless communication |
| CN109286981B (en) * | 2017-07-19 | 2023-06-23 | 普天信息技术有限公司 | Uplink transmission processing method, terminal and base station |
| CN107154911B (en) * | 2017-07-19 | 2020-08-07 | 珠海市魅族科技有限公司 | Configuration method and configuration device for demodulation reference signal, network side equipment and terminal |
| WO2019028603A1 (en) * | 2017-08-07 | 2019-02-14 | Oppo广东移动通信有限公司 | Data transmission method and terminal device |
| US11297520B2 (en) * | 2017-08-11 | 2022-04-05 | Qualcomm Incorporated | Channel state information reporting for short transmission time intervals |
| EP3465973B1 (en) | 2017-08-11 | 2022-01-05 | Telefonaktiebolaget LM Ericsson (publ) | Method for transmitting reference signal |
| CN113873663A (en) * | 2017-09-29 | 2021-12-31 | 北京小米移动软件有限公司 | Reference signal transmission and receiving method, device, base station and user equipment |
| US11019619B2 (en) * | 2017-11-03 | 2021-05-25 | Qualcomm Incorporated | Reference signal multiplexing in shortened transmission time intervals |
| US11303404B2 (en) * | 2017-11-14 | 2022-04-12 | Qualcomm Incorporated | Demodulation reference signal transmission |
| CN110391869B (en) | 2018-04-18 | 2022-10-18 | 中兴通讯股份有限公司 | Information transmission method and device, storage medium and electronic device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733594A (en) * | 2016-08-10 | 2018-02-23 | 电信科学技术研究院 | A kind of method for mapping resource of demodulated reference signal, base station and terminal |
-
2016
- 2016-09-30 CN CN201610876588.6A patent/CN106788930B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733594A (en) * | 2016-08-10 | 2018-02-23 | 电信科学技术研究院 | A kind of method for mapping resource of demodulated reference signal, base station and terminal |
Non-Patent Citations (3)
| Title |
|---|
| Discussion on DL DMRS for short TTI;Huawei, HiSilicon;《3GPP TSG RAN WG1 Meeting #84bis R1-162113》;20160415;第1-4页 |
| Downlink RS in shortened TTI;ZTE;《3GPP TSG RAN WG1 Meeting #84bis R1-162404》;20160415;全文 |
| Physical layer aspects for PDSCH for short TTI;Ericsson;《3GPP TSG RAN WG1 Meeting #84 bis R1-163318》;20160415;第1-4页 |
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