CN106160990B - A kind of method and device of demodulated reference signal DMRS resource distribution - Google Patents
A kind of method and device of demodulated reference signal DMRS resource distribution Download PDFInfo
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- CN106160990B CN106160990B CN201510204583.4A CN201510204583A CN106160990B CN 106160990 B CN106160990 B CN 106160990B CN 201510204583 A CN201510204583 A CN 201510204583A CN 106160990 B CN106160990 B CN 106160990B
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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
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
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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
- H04L5/0058—Allocation criteria
- H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
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Abstract
The present invention provides a kind of method and devices of demodulated reference signal DMRS resource distribution, it is related to the communications field, solving the problems, such as that DMRS enhanced scheme has the compatibility of user in the prior art influences, this method comprises: carrying out carrying out DMRS resource distribution in original DM RS resource location to the legacy user with clock synchronization in new user and legacy user；After to legacy user configuration, if the original DM RS resource location occupancy reaches preset threshold, DMRS resource distribution is carried out in pre-configured zero power channel status information reference signal ZP CSI-RS resource position to the new user.The solution of the present invention ensure that the compatibility to legacy user while enhancing DMRS.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of method and device of demodulated reference signal DMRS resource distribution.
Background technique
Existing communication system uses traditional 2D MIMO (Multiple-IZPut Multiple-Output, multi input
Multi output) technology, the basic principle is that improving transmission quality by the two-dimensional space freedom degree on horizontal plane, raising system is held
Amount.As the development of Antenna Design framework needs sufficiently to improve mobile communication system efficiency of transmission and improve user experience
Vertical space freedom degree is excavated, traditional 2D MIMO technology is expanded to 3D MIMO technology, makes full use of three-dimensional space oneself
System performance is improved by spending.
More pairing users, but MU-MIMO in existing standard can be distinguished compared to traditional 2D MIMO, 3D MIMO
DMRS (the De of (Multi-User Multiple-IZPut Multiple-Output, multi-user's multiple-input and multiple-output)
Modulation Reference Signal, demodulated reference signal) design is maximum supports 4 to spread defeated, it is not able to satisfy 3D-MIMO
The demand of technology.Therefore it needs that MU-MIMO maximum support 4 in existing standard is spread defeated DMRS and designed to enhance.
Although thering are some pairs of maximum supports 4 to spread the scheme that defeated DMRS is enhanced in the prior art, these schemes
All have a certain impact to the compatibility of new user and legacy user with clock synchronization in new user and legacy user.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of method and device of demodulated reference signal DMRS resource distribution,
Solving the problems, such as that the DMRS enhanced scheme of MU-MIMO in the prior art has the compatibility of user influences.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of side of demodulated reference signal DMRS resource distribution
Method, which comprises
Carry out the legacy user in original DM RS resource location with clock synchronization in new user and legacy user
DMRS resource distribution, the legacy user are using the released version before the released version and Release 12 of Release 12
Terminal user, the original DM RS resource be the released version of Release 12 define for multi-user's multiple-input and multiple-output
The DMRS resource of MIMO transmission；
After to legacy user configuration, if the original DM RS resource location occupancy reaches preset threshold,
The new user is carried out in pre-configured zero power channel status information reference signal ZP CSI-RS resource position
DMRS resource distribution.
Wherein, it is described to the new user in pre-configured zero power channel status information reference signal ZP CSI-
DMRS resource distribution is carried out in RS resource location, comprising:
Use the ZP CSI-RS resource of one or more sets 2 antenna ports, 4 antenna ports and/or 8 antenna ports
Combine the DMRS resource as the new user.
Wherein, it is described DMRS resource distribution is carried out in original DM RS resource location to the legacy user after, also wrap
It includes:
After to legacy user configuration, if the original DM RS resource location occupancy is not up to the default threshold
Value then preferentially carries out DMRS resource distribution to the new user in the rest position of the original DM RS resource location, until
The original DM RS resource location occupancy reaches the preset threshold.
Wherein, the total number of plies of the transmission of the legacy user is less than or equal to 4 layers；
And the original DM RS resource location occupancy reaches the preset threshold indicates that the total number of plies of transmission of user reaches 4
Layer.
Wherein, it is described DMRS resource distribution is carried out in original DM RS resource location to the legacy user before, also wrap
It includes:
The configuration of ZP CSI-RS resource is carried out to the legacy user, and the ZP CSI-RS resource configuring condition is notified
To the legacy user.
In order to solve the above technical problems, the embodiment of the present invention also provides a kind of demodulated reference signal DMRS resource distribution
Device, described device include:
First configuration module, for carrying out in new user and legacy user with clock synchronization, to the legacy user original
In DMRS resource location carry out DMRS resource distribution, the legacy user be using Release 12 released version and
The terminal user of released version before Release 12, the released version that the original DM RS resource is Release 12 define
The DMRS resource for multi-user's multiple-input and multiple-output MIMO transmission；
Second configuration module, after to legacy user configuration, if the original DM RS resource location occupies
Rate reaches preset threshold, then to the new user in pre-configured zero power channel status information reference signal ZP CSI-
DMRS resource distribution is carried out in RS resource location.
Wherein, second configuration module includes:
Second configuration submodule, for using one or more sets 2 antenna ports, 4 antenna ports and/or 8 antennas
The ZP CSI-RS resource of port combines the DMRS resource as the new user.
Wherein, described device further include:
Third configuration module, after to legacy user configuration, if the original DM RS resource location occupies
Rate is not up to the preset threshold, then preferentially carries out in the rest position of the original DM RS resource location to the new user
DMRS resource distribution, until the original DM RS resource location occupancy reaches the preset threshold.
Wherein, the total number of plies of the transmission of the legacy user is less than or equal to 4 layers；
And the original DM RS resource location occupancy reaches the preset threshold indicates that the total number of plies of transmission of user reaches 4
Layer.
Wherein, described device further include:
4th configuration module, for carrying out the configuration of ZP CSI-RS resource to the legacy user, and by the ZP CSI-
RS resource distribution situation is notified to the legacy user.
In order to solve the above technical problems, the embodiment of the present invention also provides a kind of demodulated reference signal DMRS resource distribution
Method, which comprises
DMRS resource allocation request is sent to base station, is used according to the DMRS resource allocation request new by the base station
It is matched with legacy user at family；
The DMRS resource that the base station is new user's distribution is received, if DMRS resource occupation position is zero energy
Channel state information reference signals ZP CSI-RS resource position, then send DMRS on ZP CSI-RS resource position；
Wherein, the base station is the DMRS resource of the new user distribution, be the base station the new user with it is described
Legacy user carries out with clock synchronization, after carrying out DMRS resource distribution in original DM RS resource location to the legacy user, in institute
It is that the new user provides in pre-configured ZP CSI-RS when stating original DM RS resource location occupancy and reaching preset threshold
The DMRS resource configured in source position, the legacy user be using the released version and Release 12 of Release 12 before
Released version terminal user, the original DM RS resource be Release 12 released version define for multi-user it is more
Input the DMRS resource of multi output MIMO transmission.
In order to solve the above technical problems, the embodiment of the present invention also provides a kind of demodulated reference signal DMRS resource distribution
Device, described device include:
Sending module, for sending DMRS resource allocation request to base station, by the base station according to the DMRS resource
Configuring request matches new user and legacy user；
Receiving module, for receiving the DMRS resource that the base station is new user's distribution, if the DMRS resource accounts for
It is zero power channel status information reference signal ZP CSI-RS resource position with position, then in ZP CSI-RS resource position
Upper transmission DMRS；
Wherein, the base station is the DMRS resource of the new user distribution, be the base station the new user with it is described
Legacy user carries out with clock synchronization, after carrying out DMRS resource distribution in original DM RS resource location to the legacy user, in institute
It is that the new user provides in pre-configured ZP CSI-RS when stating original DM RS resource location occupancy and reaching preset threshold
The DMRS resource configured in source position, the legacy user be using the released version and Release 12 of Release 12 before
Released version terminal user, the original DM RS resource be Release 12 released version define for multi-user it is more
Input the DMRS resource of multi output MIMO transmission.
The advantageous effects of the above technical solutions of the present invention are as follows:
The method of the demodulated reference signal DMRS resource distribution of the embodiment of the present invention is carried out in legacy UE and New UE
With clock synchronization, the preferential legacy UE that configures uses original DM RS resource location, uses ZP CSI-RS resource position to New UE.?
On the basis of not increasing expense, providing MU MIMO is more than 4 DMRS when spreading defeated, and both ensure that New UE and legacy
The DMRS channel estimation accuracy of UE, in turn ensures the accuracy of legacy UE data demodulation, to ensure that legacy
The compatibility of UE.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing 3D mimo antenna；
Fig. 2 is the first DMRS resource occupation schematic diagram of existing MU MIMO scheme；
Fig. 3 is the 2nd DMRS resource occupation schematic diagram of existing MU MIMO scheme；
Fig. 4 is the first pass figure of the method for demodulated reference signal DMRS resource distribution of the present invention；
Fig. 5 is the first DMRS resource occupation schematic diagram of the method for demodulated reference signal DMRS resource distribution of the present invention；
Fig. 6 is the 2nd DMRS resource occupation schematic diagram of the method for demodulated reference signal DMRS resource distribution of the present invention；
Fig. 7 is the first structure diagram of the device of demodulated reference signal DMRS resource distribution of the present invention；
Fig. 8 is the second flow chart of the method for demodulated reference signal DMRS resource distribution of the present invention；
Fig. 9 is the second structural schematic diagram of the device of demodulated reference signal DMRS resource distribution of the present invention.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
Existing communication system, such as LTE (Long Term Evolution, long term evolution), WiMax (Worldwide
Interoperability for Microwave Access, worldwide interoperability for microwave accesses), 802.11n, use be all pass
System 2D MIMO technology, the basic principle is that improving transmission quality, raising system using the two-dimensional space freedom degree on horizontal plane
Capacity.In current physical layer technology not compared under quantum jump background, how future broadband wireless communication systems further increase frequency spectrum effect
Rate, more feasible direction are abundant excavation vertical space freedom degrees, and traditional 2D MIMO technology is expanded to 3D MIMO technology,
The freedom degree of three-dimensional space is made full use of to improve system performance.
The antenna frame of 2D MIMO is by using multiple array elements to obtain higher antenna gain in vertical dimensions.
And each bay in vertical dimensions uses fixed weight, to guarantee the beam patterns needed in vertical dimensions.
Therefore, in the system of LTE, MIMO technology is had no idea in the vertical dimension using the scheme of precoding.3D MIMO in order to
It is enough adequately to use MIMO technology in the vertical dimension, the weighted factor shape of control vertical dimensions different antenna element can be passed through
At different wave beams.
3D mimo antenna is as shown in Figure 1, tie up antenna, wherein water for N × M that original N root antenna is extended to matrix form
Square to there is N root antenna, vertical direction has M root antenna, and every horizontal antenna originally is by M (i.e.8-10) vertical direction
Antenna element composition.
Existing 2~8 channel is extended to 16 channels or more by extensive antenna/3D mimo antenna.3D-MIMO has water
Flat dimension adds the beamforming capabilities and more antenna array subnumbers of vertical dimensions.It can compared to traditional 2D MIMO, 3D MIMO
To distinguish more pairing users.But the DMRS maximum of MU MIMO supports 4 streams in existing standard, is not able to satisfy 3D MIMO skill
The demand of art.
Under 3GPP R12 standard, the support situation of the DMRS of existing MU MIMO are as follows: pass through 2 orthogonal DMRS ports
Port7 and Port8, and the OCC (orthogonal cover code, orthogonal mask) and two positive cross (talk)s of standard for being 2 using length
Code quasi-orthogonal Scrambling ID 0,1 is provided and 4 is spread defeated (layer1-4) in total, as shown in table 1, wherein
Occupation condition as shown in Fig. 2,
Table 1
Using above-mentioned existing DMRS, there are 2 users (UE1 and UE2), when each user's single-stream transmission, can be used
Scheme 1:UE1 uses Port7；UE2 uses Port8.
There are 2 users (UE1 and UE2), when each user's stream transmission, can be used scheme 2:UE1 using Port7 and
Port8, and use Scrambling ID 0；UE1 uses Port7 and Port8, and uses Scrambling ID 1.
There are 4 users (UE1, UE2, UE3 and UE4), when each user's single-stream transmission, the scheme 3:UE1 of can be used makes
With Port7, and use Scrambling ID 0；UE2 uses Port7, and uses Scrambling ID 1；UE3 is used
Port8, and use Scrambling ID 0；UE4 uses Port8, and uses Scrambling ID 1.
From the foregoing, it will be observed that existing DMRS scheme maximum support 4 spread it is defeated.
If still using above-mentioned existing DMRS scheme, design MU MIMO is greater than 4 and spreads defeated DMRS, can be obtained existing
Direct scheme 1 and existing direct scheme 2, are described in detail as follows.
Existing direct scheme 1: using 12RE (Resource Element, resource element), the OCC for being 4 using length
It provides with 2 Scrambling and 8 spreads defeated (layer1-8) in total and by 4 orthogonal ports (port7,8,11,13),
As shown in table 2, wherein occupation condition is as shown in Figure 2.
Table 2
It is as follows to the strengths and weaknesses analysis of above-mentioned existing direct scheme 1 below:
Advantage: only taking up 12 RE, and expense is small.
Disadvantage: the OCC estimation DMRS that legacy user legacy UE default is 2 using length, and existing direct scheme 1
The OCC for the use of length being 4, therefore will affect the accuracy of DMRS channel estimation.
Assuming that OFDM (Orthogonal Frequency Division Multiplexing, orthogonal frequency division multiplexi)
Reception data on symbol symbol i (the i-th column) are yi, and the channel of port Port j is hj.It is used in legacy UE
When Port7, OCC are that [+1+1] is transmitted, if it is [+1+1-1-1] transmission that the new user New UE of pairing, which uses Port11, OCC,
Can have an impact to the DMRS channel estimation of legacy UE.Specifically, legacy UE Port7: OFDM symbol 5,6,
12, the OCC on 13 is+1+1+1+1 respectively；New UE Port11: the OCC on OFDM symbol 5,6,12,13 is respectively
+1+1-1-1.Legacy UE is Port7 and Port8 due to default transport, so the channel estimation to Port7 uses (y5+
Y6)/2 and (y12+y13)/2 obtains h7, wherein y5=h7+h8, y6=h7-h8, y12=h7+h8, y13=h7-h8.However
Under truth, when being transmitted using Port7 and Port11, due to y5=h7+h11, y6=h7+h11, y12=h7-h11, y13
=h7-h11, so h7 can not be obtained using (y5+y6)/2 and (y12+y13)/2.Therefore the DMRS channel of legacy UE is estimated
Meter can have an impact.
In addition, the OCC that length is 4 also has a certain impact to mobility.When using length as 4 OCC, it is assumed that OFDM
Channel on symbol 5,6,12,13 is all the same, then need it is constant in the time span of 9 OFDM symbol (5-13), because
This requires the movement speed of UE slower, has an impact to mobility.
Existing direct scheme 2: using 24RE, OCC and 2 Scrambling for being 2 using length, and just by 4
The port (port7,8,11,13) of friendship provides and 8 spreads defeated (layer1-8) in total, as shown in table 3, wherein occupation condition
As shown in Figure 3.
Table 3
It is as follows to the strengths and weaknesses analysis of above-mentioned existing direct scheme 2 below:
Advantage: due to the OCC for being using equal length with legacy UE, legacy UE is not will cause to DMRS's
The accuracy of channel estimation.
Disadvantage: due to using 24RE, expense is doubled.In addition, legacy UE only takes up 12RE, newly-increased 5-8 is defaulted
Flow the transmission of corresponding resource position is business datum.However newly-increased 5-8 stream corresponding resource position is the DMRS of New UE.If
Legacy UE does not handle the data of newly-increased resource location, then the DMRS of New UE will receive the industry of the legacy UE of pairing
Data of being engaged in interference, influences the accuracy of channel estimation.So, in order to guarantee the DMRS channel estimation accuracy of New UE, base station
The newly-increased resource location of legacy UE is punched (not transmission services data) by side eNB, however legacy UE is unknown, still for biography
Defeated is business datum, then will affect the accuracy of legacy UE data demodulation.
To sum up, existing direct scheme 1 and 2 matches clock synchronization in New UE and legacy UE, to the compatibility of legacy UE
Have certain influence.
The method of the demodulated reference signal DMRS resource distribution of the embodiment of the present invention is matched from New UE and legacy UE
When compatible legacy UE angle set out, providing MU MIMO is more than 4 DMRS when spreading defeated.
As shown in figure 4, the method for the demodulated reference signal DMRS resource distribution of the embodiment of the present invention, is applied to base station, institute
The method of stating includes:
Step 11, it carries out in new user and legacy user with clock synchronization, to the legacy user in original DM RS resource location
Middle progress DMRS resource distribution, the legacy user are using the hair before the released version and Release 12 of Release 12
The terminal user of cloth version, the original DM RS resource are used for multi-user's multi input for what the released version of Release12 defined
The DMRS resource of multi output MIMO transmission.
Here, original DM RS resource location such as Port7 and Port8 is then carried out in new user and legacy user with clock synchronization, excellent
First use Port7 and Port8 as DMRS resource legacy user.
Step 12, after to legacy user configuration, if the original DM RS resource location occupancy reaches default
Threshold value, then to the new user in pre-configured zero power channel status information reference signal ZP CSI-RS resource position
Middle progress DMRS resource distribution.
Here, the position of ZP CSI-RS is the position punched, and no business data transmission estimates the DMRS channel of New UE
Meter will not have an impact.
The method of the demodulated reference signal DMRS resource distribution of the embodiment of the present invention is carried out in legacy UE and New UE
With clock synchronization, the preferential legacy UE that configures uses original DM RS resource location, uses ZP CSI-RS resource position to New UE.?
On the basis of not increasing expense, providing MU MIMO is more than 4 DMRS when spreading defeated, and both ensure that New UE and legacy
The DMRS channel estimation accuracy of UE, in turn ensures the accuracy of legacy UE data demodulation, to ensure that legacy
The compatibility of UE.
Wherein, in above-mentioned steps 11, to the legacy user, 12RE can be used, and utilize OCC and two that length is 2
Scrambling code carries out DMRS resource distribution on Port7 and Port8, guarantee to the validity of the DMRS resource distribution of legacy UE and
Reasonability.
Specifically, to new user in pre-configured ZP CSI-RS resource position, can be used in above-mentioned steps 12
Sequence identical with original DM RS and/or orthogonal manner carry out DMRS resource distribution, it is possible to use the sequence different from original DM RS
Column and/or orthogonal manner carry out DMRS resource distribution.Wherein, ZP CSI-RS resource position uses sequence identical with original DM RS
Column and orthogonal manner (as use 12RE, use length for 2 OCC) when, on the basis of not increasing expense, ensure that legacy
The DMRS channel estimation of UE and the accuracy of data demodulation.
Preferably, the step of above-mentioned steps 12 may include:
Step 121, using the ZP of one or more sets 2 antenna ports, 4 antenna ports and/or 8 antenna ports
CSI-RS resource combines the DMRS resource as the new user.Such as using 12RE, 6 sets of 2 ports are used
ZP CSI-RS resource combines the DMRS resource as the new user, or is combined using the ZP CSI-RS resource of 3 sets of 4 ports
As the DMRS resource of the new user, or use 1 set of 8 port add 1 set of 4 port ZP CSI-RS resource combine as
The DMRS resource etc. of the new user.Certainly, above-mentioned ZP CSI-RS resource combination is merely illustrative, any other
Applicable ZP CSI-RS resource combination may be used in specific embodiments of the present invention.
Preferably, after above-mentioned steps 11, can also include:
Step 13, after to legacy user configuration, if the original DM RS resource location occupancy is not up to institute
Preset threshold is stated, then DMRS resource is preferentially carried out in the rest position of the original DM RS resource location to the new user and matched
It sets, until the original DM RS resource location occupancy reaches the preset threshold.
At this point, being fully utilized to original DM RS resource, to ensure that the reasonability of distribution, and money is improved
Source utilization rate.
Wherein, the total number of plies of the transmission of the legacy user is less than or equal to 4 layers；And the original DM RS resource location occupies
Rate, which reaches the preset threshold, indicates that the total number of plies of transmission of user reaches 4 layers.
Further, can also include: before above-mentioned steps 11
Step 14, the configuration of ZP CSI-RS resource is carried out to the legacy user, and the ZP CSI-RS resource is configured
Situation is notified to the legacy user.
At this point, notifying ZP CSI-RS resource configuring condition to after legacy UE, legacy UE when solving adjusting data,
The not sent any data in the position ZP CSI-RS can be defaulted, avoid the accuracy for influencing legacy UE data demodulation.
Here, the resource distribution of CSI-RS can be as shown in Figure 5,6,8,10 liang of column resource units of OFDM symbol in Fig. 5,
In Fig. 6 in 9,10 liang of column resource units of OFDM symbol and Fig. 6 with 9,10 liang of column resource unit blank maps of OFDM symbol
The identical resource unit of case is the CSI-RS resource position that current standard is supported, can choose ZP in the CSI-RS resource position in figure
The resource location of CSI-RS, and therefrom DMRS resource is chosen for New UE.
Specific embodiments of the present invention are illustrated below below.
The method of the demodulated reference signal DMRS resource distribution of the embodiment of the present invention is carried out in New UE and legacy UE
With clock synchronization, the preferential legacy UE that configures uses existing DMRS Port7,8 resource location (12RE, the OCC that length is 2, maximum
4 stream of carrying), while ZP CSI-RS resource is configured, and notify ZP CSI-RS resource configuring condition to give legacy UE；Then
When existing DMRS Port7,8 resource locations occupancy reach 4 stream, configuration New UE is sent using ZP CSI-RS resource position
DMRS, and the sequence and orthogonal manner of DMRS are still used in ZP CSI-RS resource position；In existing DMRS Port7,8 moneys
When source position occupies not up to 4 stream, configuration New UE preferentially uses existing DMRS Port7,8 resource locations, until existing DMRS
Port7,8 resource locations occupancy reach 4 streams.
The method of the demodulated reference signal DMRS resource distribution of the embodiment of the present invention compares existing direct scheme 1, still
Define the OCC that length is 2 using existing standard, for legacy UE demodulation without influence, and can preferably support high speed field
Scape.
The method of the demodulated reference signal DMRS resource distribution of the embodiment of the present invention is compared currently existing scheme 2, can be notified
The DMRS resource occupation position (i.e. the position of ZP CSI-RS) of legacy UE, New UE, ensure that the data solution of legacy UE
The accuracy of tune.
The method of the demodulated reference signal DMRS resource distribution of the embodiment of the present invention mentions on the basis of not increasing expense
Having supplied MU MIMO is more than 4 DMRS when spreading defeated, and effectively improves the compatibility to legacy UE.
As shown in fig. 7, the embodiments of the present invention also provide a kind of device of demodulated reference signal DMRS resource distribution, packet
It includes:
First configuration module, for carrying out in new user and legacy user with clock synchronization, to the legacy user original
In DMRS resource location carry out DMRS resource distribution, the legacy user family be using Release12 released version and
The terminal user of released version before Release 12, the released version that the original DM RS resource is Release 12 define
The DMRS resource for multi-user's multiple-input and multiple-output MIMO transmission；
Second configuration module, after to legacy user configuration, if the original DM RS resource location occupies
Rate reaches preset threshold, then to the new user in pre-configured zero power channel status information reference signal ZP CSI-
DMRS resource distribution is carried out in RS resource location.
The device of the demodulated reference signal DMRS resource distribution of the embodiment of the present invention mentions on the basis of not increasing expense
Having supplied MU MIMO is more than 4 DMRS when spreading defeated, and both ensure that the DMRS channel estimation of New UE and legacy UE were accurate
Property, the accuracy of legacy UE data demodulation is in turn ensured, to ensure that the compatibility to legacy UE.
Preferably, second configuration module includes:
Second configuration submodule, for using one or more sets 2 antenna ports, 4 antenna ports and/or 8 antennas
The ZP CSI-RS resource of port combines the DMRS resource as the new user.
Preferably, described device further include:
Third configuration module, after to legacy user configuration, if the original DM RS resource location occupies
Rate is not up to the preset threshold, then preferentially carries out in the rest position of the original DM RS resource location to the new user
DMRS resource distribution, until the original DM RS resource location occupancy reaches the preset threshold.
Wherein, the total number of plies of the transmission of the legacy user is less than or equal to 4 layers；
And the original DM RS resource location occupancy reaches the preset threshold indicates that the total number of plies of transmission of user reaches 4
Layer.
Preferably, described device further include:
4th configuration module, for carrying out the configuration of ZP CSI-RS resource to the legacy user, and by the ZP CSI-
RS resource distribution situation is notified to the legacy user.
The device of the demodulated reference signal DMRS resource distribution of the embodiment of the present invention mentions on the basis of not increasing expense
Having supplied MU MIMO is more than 4 DMRS when spreading defeated, and both ensure that the DMRS channel estimation of New UE and legacy UE were accurate
Property, the accuracy of legacy UE data demodulation is in turn ensured, to ensure that the compatibility to legacy UE.
It should be noted that the device of demodulated reference signal DMRS resource distribution is and above-mentioned demodulated reference signal DMRS
The corresponding device of the method for resource distribution, wherein all implementations are suitable for the reality of the device in above method embodiment
It applies in example, can also reach same technical effect.
As shown in figure 8, being answered the embodiments of the present invention also provide a kind of method of demodulated reference signal DMRS resource distribution
For new user, which comprises
Step 21, DMRS resource allocation request is sent to base station, is asked by the base station according to the DMRS resource distribution
It asks and new user and legacy user is matched；
Step 22, the DMRS resource that the base station is new user's distribution is received, if DMRS resource occupation position
For zero power channel status information reference signal ZP CSI-RS resource position, then sent on ZP CSI-RS resource position
DMRS；
Wherein, the base station is the DMRS resource of the new user distribution, be the base station the new user with it is described
Legacy user carries out with clock synchronization, after carrying out DMRS resource distribution in original DM RS resource location to the legacy user, in institute
It is that the new user provides in pre-configured ZP CSI-RS when stating original DM RS resource location occupancy and reaching preset threshold
The DMRS resource configured in source position, the legacy user be using the released version and Release 12 of Release 12 before
Released version terminal user, the original DM RS resource be Release 12 released version define for multi-user it is more
Input the DMRS resource of multi output MIMO transmission.
The method of the demodulated reference signal DMRS resource distribution of the embodiment of the present invention is used original by legacy UE
DMRS resource location, and New UE uses ZP CSI-RS resource position.On the basis of not increasing expense, MU MIMO is provided
DMRS when spreading defeated more than 4, and both ensure that the DMRS channel estimation accuracy of New UE and legacy UE, it in turn ensures
The accuracy of legacy UE data demodulation, to ensure that the compatibility to legacy UE.
As shown in figure 9, the embodiments of the present invention also provide a kind of device of demodulated reference signal DMRS resource distribution, institute
Stating device includes:
Sending module, for sending DMRS resource allocation request to base station, by the base station according to the DMRS resource
Configuring request matches new user and legacy user；
Receiving module, for receiving the DMRS resource that the base station is new user's distribution, if the DMRS resource accounts for
It is zero power channel status information reference signal ZP CSI-RS resource position with position, then in ZP CSI-RS resource position
Upper transmission DMRS；
Wherein, the base station is the DMRS resource of the new user distribution, be the base station the new user with it is described
Legacy user carries out with clock synchronization, after carrying out DMRS resource distribution in original DM RS resource location to the legacy user, in institute
It is that the new user provides in pre-configured ZP CSI-RS when stating original DM RS resource location occupancy and reaching preset threshold
The DMRS resource configured in source position, the legacy user be using the released version and Release 12 of Release 12 before
Released version terminal user, the original DM RS resource be Release 12 released version define for multi-user it is more
Input the DMRS resource of multi output MIMO transmission.
The device of the demodulated reference signal DMRS resource distribution of the embodiment of the present invention is used original by legacy UE
DMRS resource location, and New UE uses ZP CSI-RS resource position.On the basis of not increasing expense, MU MIMO is provided
DMRS when spreading defeated more than 4, and both ensure that the DMRS channel estimation accuracy of New UE and legacy UE, it in turn ensures
The accuracy of legacy UE data demodulation, to ensure that the compatibility to legacy UE.
It should be noted that the device of demodulated reference signal DMRS resource distribution is and above-mentioned demodulated reference signal DMRS
The corresponding device of the method for resource distribution, wherein all implementations are suitable for the reality of the device in above method embodiment
It applies in example, can also reach same technical effect.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of method of demodulated reference signal DMRS resource distribution, which is characterized in that the described method includes:
It carries out carrying out DMRS money in original DM RS resource location to the legacy user with clock synchronization in new user and legacy user
Source configuration, the legacy user are the terminal using the released version before the released version and Release 12 of Release 12
User, the original DM RS resource are that multi-user's multiple-input and multiple-output MIMO that is used for that the released version of Release 12 defines is passed
Defeated DMRS resource；
After to legacy user configuration, if the original DM RS resource location occupancy reaches preset threshold, to institute
It states new user and carries out DMRS money in pre-configured zero power channel status information reference signal ZPCSI-RS resource location
Source configuration；The total number of plies of the transmission of the legacy user is less than or equal to 4 layers；And the original DM RS resource location occupancy reaches
The preset threshold indicates that the total number of plies of transmission of user reaches 4 layers.
2. the method according to claim 1, wherein it is described to the new user in pre-configured zero energy
DMRS resource distribution is carried out in channel state information reference signals ZP CSI-RS resource position, comprising:
Made using the ZPCSI-RS combination of resources of one or more sets 2 antenna ports, 4 antenna ports and/or 8 antenna ports
For the DMRS resource of the new user.
3. the method according to claim 1, wherein it is described to the legacy user in original DM RS resource location
After middle progress DMRS resource distribution, further includes:
After to legacy user configuration, if the original DM RS resource location occupancy is not up to the preset threshold,
DMRS resource distribution is preferentially then carried out in the rest position of the original DM RS resource location to the new user, until described
Original DM RS resource location occupancy reaches the preset threshold.
4. the method according to claim 1, wherein it is described to the legacy user in original DM RS resource location
Before middle progress DMRS resource distribution, further includes:
The configuration of ZP CSI-RS resource is carried out to the legacy user, and the ZP CSI-RS resource configuring condition is notified to institute
State legacy user.
5. a kind of device of demodulated reference signal DMRS resource distribution, which is characterized in that described device includes:
First configuration module provides the legacy user in original DM RS for carrying out in new user and legacy user with clock synchronization
In source position carry out DMRS resource distribution, the legacy user be using Release 12 released version and Release 12 it
The terminal user of preceding released version, the original DM RS resource are used for multi-user for what the released version of Release 12 defined
The DMRS resource of multiple-input and multiple-output MIMO transmission；
Second configuration module, after to legacy user configuration, if the original DM RS resource location occupancy reaches
To preset threshold, then the new user is provided in pre-configured zero power channel status information reference signal ZP CSI-RS
DMRS resource distribution is carried out in source position, the total number of plies of the transmission of the legacy user is less than or equal to 4 layers；And the original DM RS
Resource location occupancy, which reaches the preset threshold, indicates that the total number of plies of transmission of user reaches 4 layers.
6. device according to claim 5, which is characterized in that second configuration module includes:
Second configuration submodule, for using one or more sets 2 antenna ports, 4 antenna ports and/or 8 antenna ports
ZP CSI-RS resource combine DMRS resource as the new user.
7. device according to claim 5, which is characterized in that described device further include:
Third configuration module, after to legacy user configuration, if the original DM RS resource location occupancy is not
Reach the preset threshold, then DMRS preferentially is carried out in the rest position of the original DM RS resource location to the new user
Resource distribution, until the original DM RS resource location occupancy reaches the preset threshold.
8. device according to claim 5, which is characterized in that described device further include:
4th configuration module for carrying out the configuration of ZP CSI-RS resource to the legacy user, and the ZP CSI-RS is provided
Source configuring condition is notified to the legacy user.
9. a kind of method of demodulated reference signal DMRS resource distribution, which is characterized in that the described method includes:
To base station send DMRS resource allocation request, by the base station according to the DMRS resource allocation request to new user with
Legacy user matches；
The DMRS resource that the base station is new user's distribution is received, if DMRS resource occupation position is zero energy channel
State information reference signals ZP CSI-RS resource position, then send DMRS on the ZPCSI-RS resource location；
Wherein, the base station is the DMRS resource of new user's distribution, is the base station in the new user and the tradition
User carries out with clock synchronization, after carrying out DMRS resource distribution in original DM RS resource location to the legacy user, in the original
It is the new user in pre-configured ZP CSI-RS resource position when beginning DMRS resource location occupancy reaches preset threshold
The DMRS resource of middle configuration is set, the legacy user is using the hair before the released version and Release 12 of Release 12
The terminal user of cloth version, the original DM RS resource are used for multi-user's multi input for what the released version of Release 12 defined
The DMRS resource of multi output MIMO transmission；The total number of plies of the transmission of the legacy user is less than or equal to 4 layers；And the original DM RS
Resource location occupancy, which reaches the preset threshold, indicates that the total number of plies of transmission of user reaches 4 layers.
10. a kind of device of demodulated reference signal DMRS resource distribution, which is characterized in that described device includes:
Sending module, for sending DMRS resource allocation request to base station, by the base station according to the DMRS resource distribution
New user and legacy user are matched in request；
Receiving module, for receiving the DMRS resource that the base station is new user's distribution, if DMRS resource occupation position
It is set to zero power channel status information reference signal ZP CSI-RS resource position, then is sent out on ZP CSI-RS resource position
Send DMRS；
Wherein, the base station is the DMRS resource of new user's distribution, is the base station in the new user and the tradition
User carries out with clock synchronization, after carrying out DMRS resource distribution in original DM RS resource location to the legacy user, in the original
It is the new user in pre-configured ZP CSI-RS resource position when beginning DMRS resource location occupancy reaches preset threshold
The DMRS resource of middle configuration is set, the legacy user is using the hair before the released version and Release 12 of Release 12
The terminal user of cloth version, the original DM RS resource are used for multi-user's multi input for what the released version of Release 12 defined
The DMRS resource of multi output MIMO transmission, the total number of plies of the transmission of the legacy user are less than or equal to 4 layers；And the original DM RS
Resource location occupancy, which reaches the preset threshold, indicates that the total number of plies of transmission of user reaches 4 layers.
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| EP3605988B1 (en) * | 2017-03-23 | 2021-05-12 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method and device for transmitting uplink demodulation reference signal |
| US11496280B2 (en) * | 2017-08-11 | 2022-11-08 | Lenovo (Beijing) Limited | Method and apparatus for DMRS transmission |
| US11246133B2 (en) | 2018-01-12 | 2022-02-08 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Signal transmission method, terminal device and network device |
| CN112135309B (en) * | 2020-10-22 | 2022-09-27 | 中国联合网络通信集团有限公司 | Network optimization method and device |
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| CN102082595A (en) * | 2010-04-30 | 2011-06-01 | 大唐移动通信设备有限公司 | Method, device and system for configuring DMRS (Demodulation Reference Signal) |
| CN102300313A (en) * | 2010-06-28 | 2011-12-28 | 华为技术有限公司 | Resource allocation method of dedicated demodulation reference signal and relevant device |
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| CN103209490A (en) * | 2010-06-28 | 2013-07-17 | 华为技术有限公司 | Resource configuration method and relevant device special for demodulation reference signal (DMRS) |
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| CN102082595A (en) * | 2010-04-30 | 2011-06-01 | 大唐移动通信设备有限公司 | Method, device and system for configuring DMRS (Demodulation Reference Signal) |
| CN102300313A (en) * | 2010-06-28 | 2011-12-28 | 华为技术有限公司 | Resource allocation method of dedicated demodulation reference signal and relevant device |
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