CN106059733A - Method for enhancing demodulation reference signal and related equipment - Google Patents
Method for enhancing demodulation reference signal and related equipment Download PDFInfo
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- CN106059733A CN106059733A CN201610362308.XA CN201610362308A CN106059733A CN 106059733 A CN106059733 A CN 106059733A CN 201610362308 A CN201610362308 A CN 201610362308A CN 106059733 A CN106059733 A CN 106059733A
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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
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0226—Channel estimation using sounding signals sounding signals per se
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Abstract
Embodiments of the invention disclose a method for enhancing a demodulation reference signal and related equipment. The method comprises the following steps: a base station can send DMRS configuration information to M UE, DMRSs reported by the M UE according to DMRSs are received, and channel estimation is performed respectively aiming at the DMRSs reported by the various UE, wherein the M UE comprises the N first target UE performing uplink data transmission in an MU-MIMO mode, and at least two first target UE having partially overlapped occupied bandwidths exist in the N first target UE. The base station can receive a plurality of MU-MIMO users having the partially overlapped occupied bandwidths, DMRSs are reported at the same time, and then the channel estimation is performed according to the DMRSs, so the number of users simultaneously sending the DMRSs can be increased, and the frequency spectrum resource utilization rate of a system can be improved.
Description
Technical field
The present invention relates to communication technical field, be specifically related to method and relevant device that a kind of demodulated reference signal strengthens.
Background technology
Along with popularization and application and the sustainable growth of mobile service of intelligent terminal, the demand of wireless transmission rate is exponentially
Increasing, two-forty, high-quality communication technology will become the goal in research of next generation communication system.And with multiple-input and multiple-output
(Multiple-Input Multiple-Output, MIMO) be the multi-antenna technology of representative be the optimal side realizing above-mentioned target
One of case.But, in third generation partner program (3rd Generation Partnership Project, 3GPP) agreement
Number of antennas and the transmission mode of regulation do not support that multi-user carries out spatial reuse, thus strongly limit the frequency spectrum resource of system
Utilization rate.In order to more effectively utilize frequency spectrum resource, 3GPP introduces full dimension multiple-input and multiple-output (Full Dimension
Multiple-Input Multiple-Output, FD-MIMO) technology realizes servicing multiple use in same running time-frequency resource
Family.
In FD-MIMO pattern, up demodulated reference signal (Demodulation Reference Signal,
DMRS) port number is the most, and the number of users that system is serviced is the most, and frequency spectrum resource utilization rate is the highest.Existing
In 3GPP agreement, frequency domain resource takies identical uplink multi-users multiple-input and multiple-output (Multi-User Multiple-
Input Multiple-Output, MU-MIMO) user can pass through cyclic shift and orthogonal code (Orthogonal Cover
Code, OCC) keep the orthogonal of DMRS pilot frequency sequence, the partly overlapping up MU-MIMO user of frequency domain resource can only be passed through
OCC keeps orthogonal.But, can only be kept by OCC orthogonal in the case of, the partly overlapping up MU-of frequency domain resource
The maximum quantity of MIMO user is 2, so that the utilization rate of frequency spectrum resource is relatively low.
Summary of the invention
The embodiment of the invention discloses method and relevant device that a kind of demodulated reference signal strengthens, in MU-MIMO scene
In CU bandwidth incomplete same in the case of, by increasing capacitance it is possible to increase send the number of users of DMRS, such that it is able to carry simultaneously
The frequency spectrum resource utilization rate of high system.
Embodiment of the present invention first aspect discloses a kind of method that demodulated reference signal strengthens, and is applied to MU-MIMO field
Scape, the method may include that
Base station sends DMRS configuration information to M user terminal UE, and described DMRS configuration information includes in described M UE each
The DMRS pilot sequence length of each UE and each UE in described M UE in the DMRS transmission mode of individual UE, described M UE
DMRS transmission location, described M UE includes N number of first object UE, and described first object UE carries out up in the way of MU-MIMO
Data are transmitted, described N number of first object UE exists the portions of bandwidth that takies overlapping at least two first object UE, described N,
M is positive integer, and described N is less than or equal to described M；
Described base station receive described M UE according to described DMRS transmission mode on described DMRS transmission location with described
The DMRS that DMRS pilot sequence length reports；
Described base station is respectively directed to the DMRS that in described M UE, each UE reports and carries out channel estimation.
Embodiment of the present invention second aspect discloses the method that another kind of demodulated reference signal strengthens, and is applied to MU-MIMO
Scene, the method may include that
UE receives the DMRS configuration information that base station sends, and described DMRS configuration information includes that the DMRS of described UE transmits mould
Formula, the DMRS pilot sequence length of described UE and the DMRS transmission location of described UE, described UE includes entering in the way of MU-MIMO
, there is the portions of bandwidth taken in described N number of first object UE overlapping at least in N number of first object UE of row transmitting uplink data
Two first object UE, described N are positive integer；
Described UE according to described DMRS transmission mode on described DMRS transmission location with described DMRS pilot sequence length
DMRS is reported, so that the described DMRS that described base station reports for described UE carries out channel estimation to described base station.
The embodiment of the present invention third aspect discloses a kind of base station, and this base station may include that
Transmitting element, for sending DMRS configuration information to M UE, described DMRS configuration information includes in described M UE
The DMRS pilot sequence length of each UE and each UE in described M UE in the DMRS transmission mode of each UE, described M UE
DMRS transmission location, described M UE includes N number of first object UE, and described first object UE carries out up in the way of MU-MIMO
Data are transmitted, described N number of first object UE exists the portions of bandwidth that takies overlapping at least two first object UE, described N,
M is positive integer, and described N is less than or equal to described M；
Receive unit, be used for receiving described M UE according to described DMRS transmission mode on described DMRS transmission location with
The DMRS that described DMRS pilot sequence length reports；
Channel estimating unit, carries out channel estimation for being respectively directed to the DMRS that in described M UE, each UE reports.
Embodiment of the present invention fourth aspect discloses a kind of UE, this UE and includes:
Receiving unit, for receiving the DMRS configuration information that base station sends, described DMRS configuration information includes described UE's
DMRS transmission mode, the DMRS pilot sequence length of described UE and the DMRS transmission location of described UE, described UE includes with MU-
The mode of MIMO carries out N number of first object UE of transmitting uplink data, there is, in described N number of first object UE, the bandwidth portion taken
Dividing overlapping at least two first object UE, described N is positive integer；
Transmitting element, for according to described DMRS transmission mode on described DMRS transmission location with described DMRS pilot tone sequence
Row length reports DMRS to described base station, so that the described DMRS that described base station reports for described UE carries out channel estimation.
Implement the embodiment of the present invention, have the advantages that
In the embodiment of the present invention, base station can send to M UE and include the DMRS transmission mode of each UE, DMRS pilot tone sequence
The DMRS configuration information of row length and DMRS transmission location, then receives M UE according to this DMRS transmission mode respective
The DMR reported with this DMRS pilot sequence length on DMRS transmission location, and be respectively directed to the DMRS that each UE reports and carry out letter
Road is estimated, wherein, M UE includes N number of first object UE carrying out transmitting uplink data in the way of MU-MIMO, and this is N number of the years old
One target UE exists at least two first object UE that the portions of bandwidth taken is overlapping.By the embodiment of the present invention, base station can
To receive the DMRS that the overlapping MU-MIMO user of multiple portions of bandwidth taken reports simultaneously, thus carry out channel according to DMRS
Estimate, so can increase the number of users simultaneously sending DMRS, such that it is able to improve the frequency spectrum resource utilization rate of system.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, in embodiment being described below required for make
Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only some embodiments of the present invention, for
From the point of view of those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the schematic flow sheet of the method that a kind of DMRS disclosed in the embodiment of the present invention strengthens；
Fig. 2 is the covering bandwidth schematic diagram of MU-MIMO user disclosed in the embodiment of the present invention；
Fig. 3 is the schematic diagram that a kind of base station and multi-user disclosed in the embodiment of the present invention communicate；
Fig. 4 is the schematic diagram that another kind of base station disclosed in the embodiment of the present invention communicates with multi-user；
Fig. 5 is the schematic flow sheet of the method that another kind of DMRS disclosed in the embodiment of the present invention strengthens；
Fig. 6 is the structural representation of a kind of base station disclosed in the embodiment of the present invention；
Fig. 7 is the structural representation of another kind of base station disclosed in the embodiment of the present invention；
Fig. 8 is the structural representation of a kind of UE disclosed in the embodiment of the present invention；
Fig. 9 is the structural representation of another kind of UE disclosed in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
The embodiment of the invention discloses a kind of demodulated reference signal and strengthen method and the relevant device of DMRS, at MU-MIMO
In the case of CU bandwidth in scene is incomplete same, by increasing capacitance it is possible to increase send the number of users of DMRS simultaneously, thus can
To improve the frequency spectrum resource utilization rate of system.It is described in detail individually below.
Refer to the schematic flow sheet that Fig. 1, Fig. 1 are the methods that a kind of DMRS disclosed in the embodiment of the present invention strengthens.Wherein,
Method shown in Fig. 1 can apply in multi-user's multiple-input and multiple-output MU-MIMO scene.MU-MIMO scene allow multiple
Different users is transmitted on identical running time-frequency resource, by cyclic shift, distinguishes different user, reduce and use on frequency domain
Interference between family, significantly to promote spectrum efficiency.Identical up use is taken for frequency domain resource (also referred to as bandwidth)
For family, the orthogonal of DMRS pilot frequency sequence can be kept by cyclic shift and OCC, and for overlapping up of portions of bandwidth
User just can only keep orthogonal by OCC, in this case, and the uplink user energy that the most only two portions of bandwidth are overlapping
Enough send DMRS simultaneously, be the most just avoided that the interference between user, but this mode can reduce the frequency spectrum resource of system greatly
Utilization rate.Concrete, as it is shown in figure 1, the method that this DMRS strengthens may comprise steps of:
101, base station sends DMRS configuration information to M UE.
In the embodiment of the present invention, M UE is the multiple UE needing simultaneously to carry out transmitting uplink data, permissible in this M UE
Including N number of first object UE, wherein, M and N is positive integer, and N is less than or equal to M.First object UE is with MU-MIMO's
Mode carries out transmitting uplink data, in above-mentioned N number of first object UE, there is the band that at least two first object UE each accounts for
Wide portion is overlapping.
In the embodiment of the present invention, base station can send DMRS configuration information to M UE in a broadcast manner.UE enters at needs
The when of row transmitting uplink data, can send transmitting uplink data request to base station, it is same that base station receives above-mentioned M UE at the same time
Time the transmitting uplink data request that sends after, according to high-rise scheduling, the most N number of first object UE can be configured to MU-
MIMO mode (can also first object UE be called MU-MIMO user), the most above-mentioned N number of first object UE can be with MU-MIMO's
Mode carries out transmitting uplink data.
In the embodiment of the present invention, UE can include cell phone, panel computer, palm PC, personal digital assistant
(Personal Digital Assistant, PDA), mobile internet device (Mobile Internet Device, MID),
Each Terminal Types such as Intelligent worn device (such as intelligent watch, Intelligent bracelet etc.), the embodiment of the present invention is not construed as limiting.
In the embodiment of the present invention, this DMRS configuration information can include but not limited to the mark of each UE in above-mentioned M UE,
In above-mentioned M UE, in the DMRS transmission mode of each UE, above-mentioned M UE, DMRS pilot sequence length and the above-mentioned M of each UE are individual
The DMRS transmission location of each UE in UE.Wherein, DMRS transmission mode may refer to UE is with which kind of pattern to transmit to base station
DMRS's, DMRS transmission mode can include frequency division transmission pattern, time-division transmission mode or code division transmission mode.Frequency division transmission mould
Transmitting in the UE different under formula different sub carrier in symbol, under time-division transmission mode, different UE passed in the different moment
Defeated, under code division transmission mode, different UE are transmitted with different orthogonal codes in symbol.In embodiments of the present invention, M UE
Transmission mode be frequency division transmission pattern.DMRS transmission location may refer to the UE which position in symbol (or which son
Carrier wave) on transmit DMRS, the DMRS transmission location of different UE can be different, i.e. different UE different sub carrier in same symbol
The respective DMRS of upper transmission, it is also possible to identical, i.e. different UE same sub-carrier in same symbol transmit respective DMRS.
As a kind of feasible embodiment, before base station sends DMRS configuration information to M UE, it is also possible to below execution
Operation:
Base station obtains the bandwidth information that above-mentioned N number of first object UE each accounts for, and each according to above-mentioned N number of first object UE
The covering bandwidth of this N number of first object UE is determined from the bandwidth information taken；
Base station determines above-mentioned N number of first object UE respective DMRS pilot sequence length respectively according to above-mentioned covering bandwidth.
Concrete, base station, can be according to high-rise tune after the transmitting uplink data receiving N number of first object UE is asked
Degree, is first configured to MU-MIMO pattern by above-mentioned N number of first object UE, then obtains what above-mentioned N number of first object UE each accounted for
Bandwidth information, and the bandwidth information each accounted for according to above-mentioned N number of first object UE determines the covering of above-mentioned N number of first object UE
Bandwidth.Wherein, this covering band is a width of comprises the small band of each first object UE occupied bandwidth in above-mentioned N number of first object UE
Width, N number of first object UE respective DMRS pilot sequence length is equal to the size of above-mentioned covering bandwidth.
For example, the covering bandwidth schematic diagram that Fig. 2, Fig. 2 are MU-MIMO user is seen also.As in figure 2 it is shown, it is false
If UE1, UE2 and UE3 are MU-MIMO user, the DMRS sequence length of UE1 (it can be appreciated that shared by the DMRS sequence of UE1
The size of bandwidth) be the DMRS sequence length that DMRS sequence length is L2, UE3 of L1, UE2 be L3, wherein, L1, L2 and L3 it
Between all exist partly overlap, then the minimum bandwidth simultaneously including L1, L2 and L3 can be defined as MU-MIMO user by base station
Cover a length of L of the DMRS sequence of bandwidth, i.e. MU-MIMO user.
Further, base station determines above-mentioned N number of first object UE respective DMRS pilot tone respectively according to above-mentioned covering bandwidth
Sequence length it is to be understood that in N number of first object UE the DMRS pilot sequence length of each first object UE be equal to this and cover
The size that cover strip is wide, say, that the DMRS pilot sequence length of N number of first object UE is the most equal.
102, base station receive DMRS transmission mode that M UE include according to DMRS configuration information on DMRS transmission location with
The DMRS that DMRS pilot sequence length reports.
In the embodiment of the present invention, after base station broadcast sends DMRS configuration information, the UE accessing this base station can receive this
DMRS configuration information also resolves, and can be judged whether the configuration information of self correspondence by UE mark, if parsing this
DMRS configuration information exists the UE mark of self, then can obtain the DMRS transmission of self correspondence from this DMRS configuration information
Pattern, DMRS transmission location and DMRS pilot sequence length.UE can be right at self according to the DMRS transmission mode of self correspondence
On the DMRS transmission location answered, the DMRS pilot sequence length with self correspondence reports DMRS, then base station can receive above-mentioned
The DMRS that M UE reports.
Concrete, in DMRS transmission mode is above-mentioned M UE, the DMRS pilot frequency sequence of each UE is according to the side of Comb=L
When formula carries out the transmission mode of frequency division, it is each self-corresponding that this DMRS transmission location i.e. can be understood as each UE in above-mentioned M UE
Comb position.So base station receives DMRS transmission mode that M UE include according to DMRS configuration information on DMRS transmission location
The concrete mode of the DMRS reported with DMRS pilot sequence length i.e. it is to be understood that base station receive in M UE each UE according to
Comb is the transmission mode that L carries out frequency division, with each self-corresponding DMRS pilot sequence length on each self-corresponding Comb position
Carry out the DMRS reported.
Wherein, L is positive integer, and is even number.Such as, Comb=2/4；As Comb=2, Comb is divided into two by base station
Individual, Comb0 and Comb1, UE can transmit on Comb0, it is also possible to transmit on Comb1；As Comb=4, base station will
Comb is divided into four, Comb0, Comb1, Comb2 and Comb3, and UE can upload at Comb0, Comb1, Comb2 or Comb3
Defeated.
It should be noted that ME UE can report DMRS at same DMRS transmission location, it is also possible to different
DMRS transmission location reports DMRS, the embodiment of the present invention not to limit.
In the embodiment of the present invention, the pilot tone basic sequence of the UE being configured on same Comb position is identical, but its sequence
Row cyclic shift is different, and the UE being i.e. configured on same Comb position keeps orthogonal by no sequence cyclic shift；
The UE being configured on the most same Comb position keeps orthogonal by different Comb frequency divisions.Wherein, be configured in same
The pilot frequency sequence of the different UE on Comb position can be understood as that same pilot tone basic sequence carries out different sequence loops and moves
Position obtains.
103, the DMRS that during base station is respectively directed to M UE, each UE reports carries out channel estimation.
In the embodiment of the present invention, the DMRS that each UE received for base station reports, it is possible to use DMRS channel is estimated
Calculating method carries out channel estimation respectively to each DMRS, i.e. the channel of each UE transmission DMRS is carried out channel estimation respectively.
As a kind of feasible embodiment, when N is less than M, M UE can also include the second target UE, the second mesh
The quantity sum of mark UE and first object UE is M, and the bandwidth that the second target UE takies is in above-mentioned covering bandwidth range, then the
The DMRS pilot sequence length of two targets UE is equal to the size of its occupied bandwidth.
Work as M=N, when i.e. M UE all carries out transmitting uplink data in the way of MU-MIMO, for example, see also
Fig. 3, Fig. 3 are the schematic diagrams that a kind of base station and multi-user disclosed in the embodiment of the present invention communicate.UE1 shown in Fig. 3, UE2,
UE3 and UE4 needs to send upstream data to base station (LTE eNB) simultaneously, and these 4 users are joined by base station according to high level instruction
It is set to MU-MIMO user, and determines the covering bandwidth of 4 MU-MIMO user according to the bandwidth information of each user, and determine
Go out the DMRS pilot sequence length size equal to covering bandwidth of each user, and configuration information is included, and DMRS transmits mould
Formula, DMRS transmission location, DMRS pilot sequence length etc. are sent to the MU-MIMO user of correspondence.Assume that 4 MU-are specified in base station
The MIMO user transmission mode transmission DMRS by Comb=2, and specify UE1 and UE2 to transmit on the transmission location of Comb0,
UE3 and UE4 transmits on the transmission location of Comb1, then these 4 MU-MIMO user after receiving respective configuration information,
DMRS can be reported with the DMRS pilot sequence length specified on each self-corresponding Comb.Wherein, UE1 and UE2 uses same
DMRS pilot tone basic sequence, keeps orthogonal by orthogonal numeral, UE3 and UE4 is also adopted by same DMRS pilot tone basic sequence, by just
Handing over numeral to keep orthogonal, UE1/UE2 from UE3/UE4 keeps orthogonal by different Comb frequency divisions.When each UE is referred to by base station
After fixed mode reports DMRS, the base station DMRS to receiving carries out channel estimation respectively, estimates to draw each UE by channel
Up weighter factor, so that the signal to transmission is weighted when base station communicates with each UE, forms the ripple of correspondence respectively
Bundle (Beam).
Work as M > N, i.e. M UE both included in the way of MU-MIMO, carry out transmitting uplink data first object UE, included again
When not carrying out the second target UE of transmitting uplink data in the way of MU-MIMO, the most for example, Fig. 4, Fig. 4 are seen also
It it is the schematic diagram that communicates with multi-user of another kind of base station disclosed in the embodiment of the present invention.UE1 shown in Fig. 4, UE2, UE3,
UE4 and UE5 needs simultaneously to send upstream data to base station (LTE eNB), base station according to high level instruction by UE1, UE2, UE3 and
These 4 users of UE4 are configured to MU-MIMO user, and UE5 is non-MU-MIMO user, then base station can be true according to aforesaid way
Make the pilot sequence length of 4 MU-MIMO user, and determine its pilot sequence length according to the bandwidth information of UE5, finally
The configuration information of each UE is included, and DMRS transmission mode, DMRS transmission location, DMRS pilot sequence length etc. are sent to right
The UE answered.Assume that base station is specified each with transmitting DMRS by the transmission mode of Comb=2 per family, and specify 4 MU-MIMO user
On the transmission location of Comb0 transmit, UE5 transmits on the transmission location of Comb1, then these 5 UE receive respective
After configuration information, on each self-corresponding Comb, DMRS can be reported with the DMRS pilot sequence length specified.Wherein, UE1, UE2,
UE3 and UE4 uses same DMRS pilot tone basic sequence, keeps orthogonal by different sequence cyclic shifts, UE1/UE2/UE3/
UE4 from UE5 keeps orthogonal by different Comb frequency divisions.
Visible, in the method described by Fig. 1, when there is the MU-MIMO user of portions of bandwidth overlap, base station is by every
The bandwidth of individual MU-MIMO user determines covering bandwidth, determines that the pilot frequency sequence of each MU-MIMO user is long according to covering bandwidth
Degree, so can ensure that multiple MU-MIMO user can report DMRS simultaneously.Further, non-MU-MIMO user the most also may be used
To report DMRS with MIMO user simultaneously.By the embodiment of the present invention, base station introduces the concept covering bandwidth, so can receive
The DMRS that the MU-MIMO user of multiple portions of bandwidth overlap reports simultaneously, thus carry out channel estimation according to DMRS, so can
Increase the number of users simultaneously sending DMRS, non-MU-MIMO user can't be produced interference, thus improve the frequency spectrum of system
The compatibility of system is also assures that while resource utilization.
Refer to the schematic flow sheet that Fig. 5, Fig. 5 are the methods that another kind of DMRS disclosed in the embodiment of the present invention strengthens.Its
In, the method shown in Fig. 5 can apply in MU-MIMO scene.As it is shown in figure 5, this DMRS strengthen method can include with
Lower step:
501, UE receives the DMRS configuration information that base station sends.
In the embodiment of the present invention, UE can include that cell phone, panel computer, palm PC, PDA, shifting MID, intelligence are worn
Wearing each Terminal Types such as equipment (such as intelligent watch, Intelligent bracelet etc.), the embodiment of the present invention is not construed as limiting.
In the embodiment of the present invention, this UE can carry out N number of first mesh of transmitting uplink data in the way of including with MU-MIMO
, there is at least two first object UE that the portions of bandwidth taken is overlapping in mark UE, wherein, N is the most whole in N number of first object UE
Number.
In the embodiment of the present invention, this DMRS configuration information can include but not limited to the mark of UE, DMRS transmission mode,
DMRS pilot sequence length and DMRS transmission location.Wherein, DMRS transmission mode may refer to UE is to base station with which kind of pattern
Transmission DMRS's, DMRS transmission mode can include frequency division transmission pattern, time-division transmission mode or code division transmission mode.Frequency division passes
Transmitting in the UE different under defeated pattern different sub carrier in symbol, under time-division transmission mode, different UE entered in the different moment
Row transmission, under code division transmission mode, different UE are transmitted with different orthogonal codes in symbol.DMRS transmission location can be
Referring to transmit on the UE which position (or which subcarrier) in symbol DMRS, the DMRS transmission location of different UE can be different,
Transmitting respective DMRS in i.e. different UE different sub carrier in same symbol, it is also possible to identical, i.e. different UE are at same symbol
Respective DMRS is transmitted in number interior same sub-carrier.
In the embodiment of the present invention, UE can receive the DMRS configuration information that base station sends in a broadcast manner.UE is at needs
The when of carrying out transmitting uplink data, can send transmitting uplink data request to base station, base station receives M UE simultaneously at the same time
After the transmitting uplink data request sent, according to high-rise scheduling, the most N number of first object UE can be configured to MU-
MIMO mode.
Concrete, the DMRS pilot sequence length of first object UE is to be each accounted for according to N number of first object UE by base station
Bandwidth information determine covering bandwidth after, determine according to covering bandwidth.Wherein, cover bandwidth and refer to comprise N number of the
The minimum bandwidth of the bandwidth that one target UE takies, is equal to this covering band according to the DMRS pilot sequence length that covering bandwidth is determined
Wide size.
Further, above-mentioned UE can also include that the second target UE, the bandwidth that the second target UE takies carry in above-mentioned covering
In the range of width, then the DMRS pilot sequence length of the second target UE is the size of its occupied bandwidth.
502, the DMRS transmission mode that UE includes according to DMRS configuration information on DMRS transmission location with DMRS pilot tone sequence
Row length reports DMRS to base station.
In the embodiment of the present invention, after base station broadcast sends DMRS configuration information, the UE accessing this base station can receive this
DMRS configuration information also resolves, and can be judged whether the configuration information of self correspondence by UE mark, if parsing this
DMRS configuration information exists the UE mark of self, then can obtain the DMRS transmission of self correspondence from this DMRS configuration information
Pattern, DMRS transmission location and DMRS pilot sequence length.UE can be right at self according to the DMRS transmission mode of self correspondence
On the DMRS transmission location answered, the DMRS pilot sequence length with self correspondence reports DMRS, then base station can receive above-mentioned
The DMRS that M UE reports.
Concrete, when the DMRS pilot frequency sequence that DMRS transmission mode is UE carries out the biography of frequency division according to the mode of Comb=L
During defeated pattern, this DMRS transmission location i.e. can be understood as Comb position corresponding for UE.So UE can be just that L enters according to Comb
The transmission mode that line frequency divides, reports DMRS with corresponding DMRS pilot sequence length on corresponding Comb position.
In the embodiment of the present invention, the pilot tone basic sequence of the UE being configured on same Comb position is identical, but its sequence
Row cyclic shift is different, and the UE being i.e. configured on same Comb position keeps orthogonal by no sequence cyclic shift；
The UE being configured on the most same Comb position keeps orthogonal by different Comb frequency divisions.Wherein, be configured in same
The pilot frequency sequence of the different UE on Comb position can be understood as that same pilot tone basic sequence carries out different sequence loops and moves
Position obtains.
In the embodiment of the present invention, after UE reports DMRS, base station can utilize DMRS channel estimation method that DMRS is carried out letter
Road is estimated.
Visible, in the method described by Fig. 5, multiple MU-MIMO user and non-MU-MIMO that portions of bandwidth is overlapping use
Family can report DMRS, wherein, the DMRS pilot frequency sequence of MU-MIMO user with the DMRS pilot sequence length that base station determines simultaneously
Length is to be determined covering bandwidth by base station according to the bandwidth of each MU-MIMO user, and according to covering what bandwidth determined.Pass through
The embodiment of the present invention, base station introduces the concept covering bandwidth, so can receive the MU-MIMO user that multiple portions of bandwidth is overlapping
The DMRS simultaneously reported, thus carry out channel estimation according to DMRS, so can increase the number of users simultaneously sending DMRS, and
Non-MU-MIMO user will not be produced interference, thus also assures that system while improving the frequency spectrum resource utilization rate of system
Compatibility.
Referring to Fig. 6, Fig. 6 is the structural representation of a kind of base station disclosed in the embodiment of the present invention, is used for performing the present invention
The method that DMRS disclosed in embodiment strengthens.As shown in Figure 6, this base station 600 may include that
Transmitting element 601, for sending DMRS configuration information to M UE.
In the embodiment of the present invention, M UE is the multiple UE needing simultaneously to carry out transmitting uplink data, permissible in this M UE
Including N number of first object UE, wherein, M and N is positive integer, and N is less than or equal to M.First object UE is with MU-MIMO's
Mode carries out transmitting uplink data, in above-mentioned N number of first object UE, there is the band that at least two first object UE each accounts for
Wide portion is overlapping.
In the embodiment of the present invention, transmitting element 601 can send DMRS configuration information to M UE in a broadcast manner.UE
Can include cell phone, panel computer, palm PC, personal digital assistant (Personal Digital Assistant,
PDA), mobile internet device (Mobile Internet Device, MID), Intelligent worn device are (such as intelligent watch, intelligence
Bracelet etc.) etc. each Terminal Type, the embodiment of the present invention is not construed as limiting.
In the embodiment of the present invention, this DMRS configuration information can include but not limited to the mark of each UE in above-mentioned M UE,
In above-mentioned M UE, in the DMRS transmission mode of each UE, above-mentioned M UE, DMRS pilot sequence length and the above-mentioned M of each UE are individual
The DMRS transmission location of each UE in UE.
Receive unit 602, be used for receiving M UE according to DMRS transmission mode on DMRS transmission location with DMRS pilot tone sequence
The DMRS that row length reports.
In the embodiment of the present invention, the UE accessing this base station 600 can receive this DMRS configuration information and resolve, and can pass through
UE mark judges whether the configuration information of self correspondence, if parsing the UE mark that there is self in this DMRS configuration information
Know, then can obtain the DMRS transmission mode of self correspondence, DMRS transmission location and DMRS pilot tone from this DMRS configuration information
Sequence length.UE can be right with self on the DMRS transmission location of self correspondence according to the DMRS transmission mode of self correspondence
The DMRS pilot sequence length answered reports DMRS, then receives unit 602 and can receive the DMRS that above-mentioned M UE reports.
As a kind of feasible embodiment, the DMRS pilot tone sequence of each UE in DMRS transmission mode is above-mentioned M UE
When row carry out the transmission mode of frequency division according to the mode of Comb=L, this DMRS transmission location i.e. can be understood as in above-mentioned M UE
The each self-corresponding Comb position of each UE.So reception unit 602 receives M UE and transmits position according to DMRS transmission mode at DMRS
Put the concrete mode of the DMRS reported with DMRS pilot sequence length i.e. it is to be understood that receive in M UE each UE according to
Comb is the transmission mode that L carries out frequency division, with each self-corresponding DMRS pilot sequence length on each self-corresponding Comb position
Carry out the DMRS reported.
As the embodiment that another kind is feasible, the pilot tone basic sequence phase of the UE being configured on same Comb position
With, but its sequence cyclic shift is different, and the UE being i.e. configured on same Comb position is moved by no sequence loops
Position keeps orthogonal；The UE being configured on the most same Comb position keeps orthogonal by different Comb frequency divisions.Wherein, joined
The pilot frequency sequence putting the different UE on same Comb position can be understood as carrying out different by same pilot tone basic sequence
Sequence cyclic shift obtains.
Channel estimating unit 603, carries out channel estimation for being respectively directed to the DMRS that in M UE, each UE reports.
As a kind of feasible embodiment, base station 600 can also include:
Acquiring unit 604, for obtaining the bandwidth information that above-mentioned N number of first object UE each accounts for.
Determine unit 605, the bandwidth information for each accounting for according to above-mentioned N number of first object UE determine this N number of first
The covering bandwidth of target UE, and determine above-mentioned N number of first object UE respective DMRS pilot tone sequence respectively according to above-mentioned covering bandwidth
Row length.
Wherein, this covering band is a width of comprises the minimum of each first object UE occupied bandwidth in above-mentioned N number of first object UE
Bandwidth, N number of first object UE respective DMRS pilot sequence length is equal to the size of above-mentioned covering bandwidth.
As the feasible embodiment of another kind, when N is less than M, M UE can also include the second target UE, second
Target UE is M with the quantity sum of first object UE, and the bandwidth that the second target UE takies is in above-mentioned covering bandwidth range, then
The DMRS pilot sequence length of the second target UE is equal to the size of its occupied bandwidth.
Visible, in the base station described by Fig. 6, introduce the concept covering bandwidth, such base station can receive multiple bandwidth
The DMRS that partly overlapping MU-MIMO user reports simultaneously, thus carry out channel estimation according to DMRS, so can increase simultaneously
Send the number of users of DMRS, non-MU-MIMO user can't be produced interference, thus utilize at the frequency spectrum resource improving system
The compatibility of system is also assures that while rate.
Referring to Fig. 7, Fig. 7 is the structural representation of another kind of base station disclosed in the embodiment of the present invention, is used for performing this
The method that DMRS disclosed in bright embodiment strengthens.As it is shown in fig. 7, this base station 700 may include that at least one processor 701, example
Such as CPU (Central Processing Unit, central processing unit), at least one receptor 702, at least one transmitter
703, memorizer 704 assembly such as grade.Wherein, these assemblies are communicatively coupled by one or more bus 705.Art technology
Personnel are appreciated that the structure of the base station 700 shown in Fig. 7 is not intended that the restriction to the embodiment of the present invention, and it both can be
Busbar network, it is also possible to be hub-and-spoke configuration, it is also possible to include that ratio illustrates more or less of parts, or combine some portion
Part, or different parts layouts.Wherein:
In the embodiment of the present invention, receptor 702 can include line interface, wave point etc., may be used for receiving on UE
The signal etc. of row transmission.Transmitter 703 can include line interface, wave point etc., may be used for UE downstream transmission signals
Deng.
In the embodiment of the present invention, memorizer 704 can be high-speed RAM memorizer, it is also possible to be non-labile memorizer
(non-volatile memory), for example, at least one disk memory.Memorizer 704 optionally can also is that at least one
It is located remotely from the storage device of aforementioned processor 701.As it is shown in fig. 7, memorizer 704 can include application program and data
Deng, the embodiment of the present invention is not construed as limiting.
In the base station 700 shown in Fig. 7, processor 701 may be used for calling in memorizer 704 application program of storage with
Operation below performing:
Trigger transmitter 703 and send DMRS configuration information to M UE.M UE carries out transmitting uplink data for needs simultaneously
Multiple UE, this M UE can include N number of first object UE, wherein, M and N is positive integer, and N is less than or equal to M.
First object UE carries out transmitting uplink data in the way of MU-MIMO, in above-mentioned N number of first object UE, there is at least two
The portions of bandwidth that first object UE each accounts for is overlapping.This DMRS configuration information can include but not limited in above-mentioned M UE each
In the mark of individual UE, above-mentioned M UE, in the DMRS transmission mode of each UE, above-mentioned M UE, the DMRS pilot frequency sequence of each UE is long
The DMRS transmission location of each UE in degree and above-mentioned M UE.
Trigger receptor 702 receive M UE according to DMRS transmission mode on DMRS transmission location with DMRS pilot frequency sequence
The DMRS that length reports.
It is respectively directed to the DMRS that in M UE, each UE reports and carries out channel estimation.
As a kind of feasible embodiment, what above-mentioned processor 701 can be also used for calling storage in memorizer 704 should
By program to perform following operation:
Obtain the bandwidth information that above-mentioned N number of first object UE each accounts for；
The bandwidth information each accounted for according to above-mentioned N number of first object UE determines the covering bandwidth of this N number of first object UE,
And determine above-mentioned N number of first object UE respective DMRS pilot sequence length respectively according to above-mentioned covering bandwidth.Wherein, this covering
Comprising the minimum bandwidth of each first object UE occupied bandwidth in above-mentioned N number of first object UE with a width of, N number of first object UE is each
From DMRS pilot sequence length equal to the size of above-mentioned covering bandwidth.
As the feasible embodiment of another kind, when N is less than M, M UE can also include the second target UE, second
Target UE is M with the quantity sum of first object UE, and the bandwidth that the second target UE takies is in above-mentioned covering bandwidth range, then
The DMRS pilot sequence length of the second target UE is equal to the size of its occupied bandwidth.
As the embodiment that another kind is feasible, the DMRS pilot tone of each UE in DMRS transmission mode is above-mentioned M UE
When sequence carries out the transmission mode of frequency division according to the mode of Comb=L, this DMRS transmission location i.e. can be understood as above-mentioned M UE
In each self-corresponding Comb position of each UE.So receptor 702 receives M UE and transmits position according to DMRS transmission mode at DMRS
Put the concrete mode of the DMRS reported with DMRS pilot sequence length i.e. it is to be understood that receive in M UE each UE according to
Comb is the transmission mode that L carries out frequency division, with each self-corresponding DMRS pilot sequence length on each self-corresponding Comb position
Carry out the DMRS reported.
Concrete, the pilot tone basic sequence of the UE being configured on same Comb position is identical, but its sequence loops moves
Position is different, and the UE being i.e. configured on same Comb position keeps orthogonal by no sequence cyclic shift；It is configured in
UE on the most same Comb position keeps orthogonal by different Comb frequency divisions.Wherein, it is configured in same Comb position
On the pilot frequency sequence of different UE can be understood as that same pilot tone basic sequence is carried out different sequence cyclic shifts and obtain.
Visible, in the base station described by Fig. 7, introduce the concept covering bandwidth, such base station can receive multiple bandwidth
The DMRS that partly overlapping MU-MIMO user reports simultaneously, thus carry out channel estimation according to DMRS, so can increase simultaneously
Send the number of users of DMRS, non-MU-MIMO user can't be produced interference, thus utilize at the frequency spectrum resource improving system
The compatibility of system is also assures that while rate.
Referring to Fig. 8, Fig. 8 is the structural representation of a kind of UE disclosed in the embodiment of the present invention, is used for performing the present invention real
Execute the method that DMRS disclosed in example strengthens.As shown in Figure 8, this UE800 may include that
Receive unit 801, for receiving the DMRS configuration information that base station sends.
In the embodiment of the present invention, UE800 can carry out N number of the first of transmitting uplink data in the way of including with MU-MIMO
, there is at least two first object UE that the portions of bandwidth taken is overlapping in target UE, wherein, N is the most whole in N number of first object UE
Number.This DMRS configuration information can include but not limited to the mark of UE, DMRS transmission mode, DMRS pilot sequence length and DMRS
Transmission location.
Transmitting element 802, for according to DMRS transmission mode on DMRS transmission location with DMRS pilot sequence length to
Base station reports DMRS.
In the embodiment of the present invention, the DMRS pilot sequence length of first object UE is according to N number of first object by base station
After the bandwidth information that UE each accounts for determines covering bandwidth, according to covering what bandwidth was determined.Wherein, cover bandwidth and refer to bag
Minimum bandwidth containing the bandwidth that N number of first object UE takies, is equal to according to the DMRS pilot sequence length that covering bandwidth is determined
The size of this covering bandwidth.
Further, above-mentioned UE800 can also include the second target UE, and the bandwidth that the second target UE takies is in above-mentioned covering
In bandwidth range, then the DMRS pilot sequence length of the second target UE is the size of its occupied bandwidth.
Concrete, when the DMRS pilot frequency sequence that DMRS transmission mode is UE800 carries out frequency division according to the mode of Comb=L
During transmission mode, this DMRS transmission location i.e. can be understood as Comb position corresponding for UE800.So transmitting element 802 just may be used
With the transmission mode carrying out frequency division according to Comb for L, with in corresponding DMRS pilot sequence length on corresponding Comb position
Report DMRS.
In the embodiment of the present invention, the pilot tone basic sequence of the UE being configured on same Comb position is identical, but its sequence
Row cyclic shift is different, and the UE being i.e. configured on same Comb position keeps orthogonal by no sequence cyclic shift；
The UE being configured on the most same Comb position keeps orthogonal by different Comb frequency divisions.Wherein, be configured in same
The pilot frequency sequence of the different UE on Comb position can be understood as that same pilot tone basic sequence carries out different sequence loops and moves
Position obtains.
In the embodiment of the present invention, after UE800 reports DMRS, base station can utilize DMRS channel estimation method to carry out DMRS
Channel is estimated.
Visible, in the UE described by Fig. 8, multiple MU-MIMO user of portions of bandwidth overlap and non-MU-MIMO user
Can report DMRS with the DMRS pilot sequence length that base station determines, wherein, the DMRS pilot frequency sequence of MU-MIMO user is long simultaneously
Degree is to be determined covering bandwidth by base station according to the bandwidth of each MU-MIMO user, and according to covering what bandwidth determined.By this
Inventive embodiments, base station can receive the DMRS that the overlapping MU-MIMO user of multiple portions of bandwidth reports simultaneously, so can increase
Add the number of users simultaneously sending DMRS, non-MU-MIMO user can't be produced interference, thus improve the frequency spectrum money of system
The compatibility of system is also assures that while the utilization rate of source.
Referring to Fig. 9, Fig. 9 is the structural representation of another kind of UE disclosed in the embodiment of the present invention, is used for performing the present invention
The method that DMRS disclosed in embodiment strengthens.As it is shown in figure 9, this UE900 may include that at least one processor 901, such as
CPU (Central Processing Unit, central processing unit), at least one receptor 902, at least one transmitter 903,
Memorizer 904 assembly such as grade.Wherein, these assemblies are communicatively coupled by one or more bus 905.Those skilled in the art
Being appreciated that the structure of the UE900 shown in Fig. 9 is not intended that the restriction to the embodiment of the present invention, it both can be type trunk
Structure, it is also possible to be hub-and-spoke configuration, it is also possible to include that ratio illustrates more or less of parts, or combine some parts, or
Different parts are arranged.Wherein:
In the embodiment of the present invention, receptor 902 can include line interface, wave point etc., may be used for receiving base station
The signal etc. of downlink transfer.Transmitter 903 can include line interface, wave point etc., may be used for base station uplink
Signal etc..
In the embodiment of the present invention, memorizer 904 can be high-speed RAM memorizer, it is also possible to be non-labile memorizer
(non-volatile memory), for example, at least one disk memory.Memorizer 904 optionally can also is that at least one
It is located remotely from the storage device of aforementioned processor 901.As it is shown in figure 9, memorizer 904 can include operating system, application journey
Sequence and data etc., the embodiment of the present invention is not construed as limiting.
In the UE900 shown in Fig. 9, processor 901 may be used for calling the application program stored in memorizer 904 to hold
The following operation of row:
Trigger receptor 902 and receive the DMRS configuration information that base station sends.Wherein, UE900 can include with MU-MIMO's
Mode carries out N number of first object UE of transmitting uplink data, there is the portions of bandwidth taken overlapping extremely in N number of first object UE
Few two first object UE, wherein, N is positive integer.This DMRS configuration information can include but not limited to that the mark of UE, DMRS pass
Defeated pattern, DMRS pilot sequence length and DMRS transmission location.
Trigger transmitter 903 according to DMRS transmission mode on DMRS transmission location with DMRS pilot sequence length to base station
Report DMRS.
In the embodiment of the present invention, the DMRS pilot sequence length of first object UE is according to N number of first object by base station
After the bandwidth information that UE each accounts for determines covering bandwidth, according to covering what bandwidth was determined.Wherein, cover bandwidth and refer to bag
Minimum bandwidth containing the bandwidth that N number of first object UE takies, is equal to according to the DMRS pilot sequence length that covering bandwidth is determined
The size of this covering bandwidth.
Further, above-mentioned UE900 can also include the second target UE, and the bandwidth that the second target UE takies is in above-mentioned covering
In bandwidth range, then the DMRS pilot sequence length of the second target UE is the size of its occupied bandwidth.
Concrete, when the DMRS pilot frequency sequence that DMRS transmission mode is UE900 carries out frequency division according to the mode of Comb=L
During transmission mode, this DMRS transmission location i.e. can be understood as Comb position corresponding for UE900.So transmitter 903 is the most permissible
It is the transmission mode that L carries out frequency division according to Comb, corresponding Comb position reports with corresponding DMRS pilot sequence length
DMRS。
In the embodiment of the present invention, the pilot tone basic sequence of the UE being configured on same Comb position is identical, but its sequence
Row cyclic shift is different, and the UE being i.e. configured on same Comb position keeps orthogonal by no sequence cyclic shift；
The UE being configured on the most same Comb position keeps orthogonal by different Comb frequency divisions.Wherein, be configured in same
The pilot frequency sequence of the different UE on Comb position can be understood as that same pilot tone basic sequence carries out different sequence loops and moves
Position obtains.
In the embodiment of the present invention, after transmitter 903 reports DMRS, base station can utilize DMRS channel estimation method to DMRS
Carry out channel estimation.
Visible, in the UE described by Fig. 9, multiple MU-MIMO user of portions of bandwidth overlap and non-MU-MIMO user
Can report DMRS with the DMRS pilot sequence length that base station determines, wherein, the DMRS pilot frequency sequence of MU-MIMO user is long simultaneously
Degree is to be determined covering bandwidth by base station according to the bandwidth of each MU-MIMO user, and according to covering what bandwidth determined.By this
Inventive embodiments, base station can receive the DMRS that the overlapping MU-MIMO user of multiple portions of bandwidth reports simultaneously, so can increase
Add the number of users simultaneously sending DMRS, non-MU-MIMO user can't be produced interference, thus improve the frequency spectrum money of system
The compatibility of system is also assures that while the utilization rate of source.
Unit in all embodiments of the invention, can pass through universal integrated circuit, such as CPU, or pass through ASIC
(Application Specific Integrated Circuit, special IC) realizes.
It should be noted that for each embodiment of the method aforesaid, in order to be briefly described, therefore it is all expressed as one it be
The combination of actions of row, but those skilled in the art should know, and the present invention is not limited by described sequence of movement, because of
For according to the application, certain some step can use other orders or carry out simultaneously.Secondly, those skilled in the art also should
Knowing, embodiment described in this description belongs to preferred embodiment, involved action and module not necessarily this Shen
Please be necessary.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and is not described in certain embodiment
Part, may refer to the associated description of other embodiments.
Step in embodiment of the present invention method can carry out order according to actual needs and adjust, merges and delete.
Unit in embodiment of the present invention base station or UE can merge according to actual needs, divides and delete.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, be permissible
Instructing relevant hardware by computer program to complete, described program can be stored in a computer read/write memory medium
In, this program is upon execution, it may include such as the flow process of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic
Dish, CD, read-only store-memory body (Read-Only Memory, ROM) or random access memory (Random Access
Memory, is called for short RAM) etc..
Method and relevant device that a kind of demodulated reference signal provided the embodiment of the present invention above strengthens have been carried out in detail
Thin introducing, principle and the embodiment of the present invention are set forth by specific case used herein, saying of above example
Bright method and the core concept thereof being only intended to help to understand the present invention；Simultaneously for one of ordinary skill in the art, foundation
The thought of the present invention, the most all will change, and in sum, this specification content is not
It is interpreted as limitation of the present invention.
Claims (20)
1. the method that a demodulated reference signal DMRS strengthens, it is characterised in that be applied to multi-user multiple-input and multiple-output MU-
MIMO scene, described method includes:
Base station sends DMRS configuration information to M user terminal UE, and described DMRS configuration information includes each UE in described M UE
DMRS transmission mode, in described M UE each UE DMRS pilot sequence length and in described M UE the DMRS of each UE pass
Defeated position, described M UE includes that N number of first object UE, described first object UE carry out upstream data biography in the way of MU-MIMO
Defeated, described N number of first object UE exists at least two first object UE that the portions of bandwidth taken is overlapping, described N, M are just
Integer, and described N is less than or equal to described M；
Described base station receives described M UE and leads with described DMRS on described DMRS transmission location according to described DMRS transmission mode
The DMRS that frequency sequence length reports；
Described base station is respectively directed to the DMRS that in described M UE, each UE reports and carries out channel estimation.
Method the most according to claim 1, it is characterised in that before described base station sends DMRS configuration information to M UE,
Described method also includes:
Described base station obtains the bandwidth information that described N number of first object UE each accounts for, and each according to described N number of first object UE
Determine the covering bandwidth of described N number of first object UE from the bandwidth information taken, described covering band is a width of comprises described N number of first
The minimum bandwidth of the bandwidth that target UE takies；
Described base station determines described N number of first object UE respective DMRS pilot sequence length respectively according to described covering bandwidth,
Described N number of first object UE respective DMRS pilot sequence length is equal to the size of described covering bandwidth.
Method the most according to claim 2, it is characterised in that when described N is less than described M, described M UE also includes the
Two targets UE, the bandwidth that described second target UE takies in described covering bandwidth, the DMRS pilot tone sequence of described second target UE
The size of the bandwidth that row length takies equal to described second target UE.
4. according to the method described in any one of claims 1 to 3, it is characterised in that when in described M UE, the DMRS of each UE passes
Defeated pattern is the transmission that in described M UE, the DMRS pilot frequency sequence of each UE carries out frequency division according to the mode that transmission comb Comb is L
During pattern, the Comb position that in described M UE, the DMRS transmission location of each UE is corresponding for each UE in being described M UE, described L
For positive integer；
Described base station receives described M UE and leads with described DMRS on described DMRS transmission location according to described DMRS transmission mode
The DMRS that frequency sequence length reports, including:
It is the transmission mode that L carries out frequency division according to described Comb that described base station receives each UE in described M UE, in correspondence
Carry out the DMRS reported with described DMRS pilot sequence length on Comb position.
Method the most according to claim 4, it is characterised in that the pilot tone basic sequence phase of the UE on same Comb position
With, the sequence cyclic shift of the UE on same Comb position is different.
6. the method that a DMRS strengthens, it is characterised in that being applied to MU-MIMO scene, described method includes:
UE receives the DMRS configuration information that base station sends, and described DMRS configuration information includes the DMRS transmission mode of described UE, institute
Stating the DMRS pilot sequence length of UE and the DMRS transmission location of described UE, described UE includes carrying out in the way of MU-MIMO
, in described N number of first object UE, there is at least two that the portions of bandwidth taken is overlapping in N number of first object UE of row data transmission
First object UE, described N are positive integer；
Described UE according to described DMRS transmission mode on described DMRS transmission location with described DMRS pilot sequence length to institute
State base station and report DMRS, so that the described DMRS that described base station reports for described UE carries out channel estimation.
Method the most according to claim 6, it is characterised in that the DMRS pilot sequence length of described first object UE is by institute
State base station and determine the covering of described N number of first object UE in the bandwidth information each accounted for according to described N number of first object UE
After bandwidth, determining according to described covering bandwidth, the DMRS pilot sequence length of described first object UE covers band equal to described
Wide size, a width of minimum bandwidth comprising the bandwidth that described N number of first object UE takies of described covering band.
Method the most according to claim 7, it is characterised in that described UE also includes the second target UE, described second target
The bandwidth that UE takies is in described covering bandwidth, and the DMRS pilot sequence length of described second target UE is equal to described second target
The size of the bandwidth that UE takies.
9. according to the method described in any one of claim 6～8, it is characterised in that when described DMRS transmission mode is described UE
DMRS pilot frequency sequence when carrying out the transmission mode of frequency division according to the mode that Comb is L, the DMRS transmission location of described UE is institute
Stating Comb position corresponding for UE, described L is positive integer；
Described UE according to described DMRS transmission mode on described DMRS transmission location with described DMRS pilot sequence length to institute
State base station and report DMRS, including:
Described UE is according to the transmission mode that described Comb is that L carries out frequency division, with described DMRS pilot tone on corresponding Comb position
Sequence length reports DMRS to described base station.
Method the most according to claim 9, it is characterised in that the pilot tone basic sequence of the UE on same Comb position
Identical, the sequence cyclic shift of the UE on same Comb position is different.
11. 1 kinds of base stations, it is characterised in that described base station includes:
Transmitting element, for M UE transmission DMRS configuration information, described DMRS configuration information includes in described M UE each
The DMRS pilot sequence length of each UE and the DMRS of each UE in described M UE in the DMRS transmission mode of UE, described M UE
Transmission location, described M UE includes that N number of first object UE, described first object UE carry out upstream data in the way of MU-MIMO
, there is at least two first object UE that the portions of bandwidth taken is overlapping in transmission, described N, M are in described N number of first object UE
Positive integer, and described N is less than or equal to described M；
Receive unit, be used for receiving described M UE according to described DMRS transmission mode on described DMRS transmission location with described
The DMRS that DMRS pilot sequence length reports；
Channel estimating unit, carries out channel estimation for being respectively directed to the DMRS that in described M UE, each UE reports.
12. base stations according to claim 11, it is characterised in that described base station also includes:
Acquiring unit, for obtaining the bandwidth information that described N number of first object UE each accounts for；
Determine unit, determine described N number of first object UE for the bandwidth information each accounted for according to described N number of first object UE
Covering bandwidth, and determine described N number of first object UE respective DMRS pilot sequence length respectively according to described covering bandwidth,
Described N number of first object UE respective DMRS pilot sequence length is equal to the size of described covering bandwidth, and described covering band is a width of
Comprise the minimum bandwidth of the bandwidth that described N number of first object UE takies.
13. base stations according to claim 12, it is characterised in that when described N is less than described M, described M UE also includes
Second target UE, the bandwidth that described second target UE takies in described covering bandwidth, the DMRS pilot tone of described second target UE
The size of the bandwidth that sequence length takies equal to described second target UE.
14. according to the base station described in any one of claim 11～13, it is characterised in that as each UE in described M UE
DMRS transmission mode is the transmission that in described M UE, the DMRS pilot frequency sequence of each UE carries out frequency division according to the mode that Comb is L
During pattern, the Comb position that in described M UE, the DMRS transmission location of each UE is corresponding for each UE in being described M UE, described L
For positive integer；
Described reception unit receive described M UE according to described DMRS transmission mode on described DMRS transmission location with described
The concrete mode of the DMRS that DMRS pilot sequence length reports is:
Receiving each UE in described M UE is the transmission mode that L carries out frequency division according to described Comb, on corresponding Comb position
The DMRS reported is carried out with described DMRS pilot sequence length.
15. base stations according to claim 14, it is characterised in that the pilot tone basic sequence of the UE on same Comb position
Identical, the sequence cyclic shift of the UE on same Comb position is different.
16. 1 kinds of UE, it is characterised in that described UE includes:
Receiving unit, for receiving the DMRS configuration information that base station sends, described DMRS configuration information includes the DMRS of described UE
Transmission mode, the DMRS pilot sequence length of described UE and the DMRS transmission location of described UE, described UE includes with MU-MIMO's
Mode carries out N number of first object UE of transmitting uplink data, there is the portions of bandwidth taken overlapping in described N number of first object UE
At least two first object UE, described N be positive integer；
Transmitting element, for according to described DMRS transmission mode on described DMRS transmission location long with described DMRS pilot frequency sequence
Degree reports DMRS to described base station, so that the described DMRS that described base station reports for described UE carries out channel estimation.
17. UE according to claim 16, it is characterised in that the DMRS pilot sequence length of described first object UE is by institute
State base station and determine the covering of described N number of first object UE in the bandwidth information each accounted for according to described N number of first object UE
After bandwidth, determining according to described covering bandwidth, the DMRS pilot sequence length of described first object UE covers band equal to described
Wide size, a width of minimum bandwidth comprising the bandwidth that described N number of first object UE takies of described covering band.
18. UE according to claim 17, it is characterised in that described UE also includes the second target UE, described second target
The bandwidth that UE takies is in described covering bandwidth, and the DMRS pilot sequence length of described second target UE is equal to described second target
The size of the bandwidth that UE takies.
19. according to the UE described in any one of claim 16～18, it is characterised in that when described DMRS transmission mode is described UE
DMRS pilot frequency sequence when carrying out the transmission mode of frequency division according to the mode that Comb is L, the DMRS transmission location of described UE is institute
Stating Comb position corresponding for UE, described L is positive integer；
Described transmitting element according to described DMRS transmission mode on described DMRS transmission location long with described DMRS pilot frequency sequence
Degree reports the concrete mode of DMRS to be to described base station:
It is the transmission mode that L carries out frequency division according to described Comb, long with described DMRS pilot frequency sequence on corresponding Comb position
Degree reports DMRS to described base station.
20. UE according to claim 19, it is characterised in that the pilot tone basic sequence phase of the UE on same Comb position
With, the sequence cyclic shift of the UE on same Comb position is different.
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| WO2018103382A1 (en) * | 2016-12-09 | 2018-06-14 | Huawei Technologies Co., Ltd. | Pilot-data overlap design for uplink transmission |
| CN109818722A (en) * | 2017-11-20 | 2019-05-28 | 深圳市金立通信设备有限公司 | Sending method, method of reseptance and the base station of demodulated reference signal, user equipment |
| CN109905144A (en) * | 2017-12-08 | 2019-06-18 | 电信科学技术研究院 | A kind of the basic sequence generation method and communication equipment of uplink signal |
| CN109952734A (en) * | 2016-11-02 | 2019-06-28 | 高通股份有限公司 | Conflict in access based on contention is reduced |
| WO2019191880A1 (en) * | 2018-04-02 | 2019-10-10 | Oppo广东移动通信有限公司 | Resource allocation method and device and computer storage medium |
| CN111786760A (en) * | 2016-12-06 | 2020-10-16 | Oppo广东移动通信有限公司 | Method for demodulating shared reference signal, terminal equipment and network equipment |
| WO2022052073A1 (en) * | 2020-09-11 | 2022-03-17 | 北京小米移动软件有限公司 | Channel estimation method, apparatus, communication device, and storage medium |
| CN115001925A (en) * | 2022-07-01 | 2022-09-02 | 白盒子(上海)微电子科技有限公司 | MIMO signal demodulation method under radio frequency combining |
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| CN109952734A (en) * | 2016-11-02 | 2019-06-28 | 高通股份有限公司 | Conflict in access based on contention is reduced |
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| CN109818722A (en) * | 2017-11-20 | 2019-05-28 | 深圳市金立通信设备有限公司 | Sending method, method of reseptance and the base station of demodulated reference signal, user equipment |
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| WO2022052073A1 (en) * | 2020-09-11 | 2022-03-17 | 北京小米移动软件有限公司 | Channel estimation method, apparatus, communication device, and storage medium |
| CN115001925A (en) * | 2022-07-01 | 2022-09-02 | 白盒子(上海)微电子科技有限公司 | MIMO signal demodulation method under radio frequency combining |
| CN115001925B (en) * | 2022-07-01 | 2024-03-19 | 白盒子(上海)微电子科技有限公司 | MIMO signal demodulation method under radio frequency combination |
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Application publication date: 20161026 |