CN102340382A - Method and device for configuring DMRS (demodulation reference signal) scrambling code sequence - Google Patents

Method and device for configuring DMRS (demodulation reference signal) scrambling code sequence Download PDF

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CN102340382A
CN102340382A CN2011103339432A CN201110333943A CN102340382A CN 102340382 A CN102340382 A CN 102340382A CN 2011103339432 A CN2011103339432 A CN 2011103339432A CN 201110333943 A CN201110333943 A CN 201110333943A CN 102340382 A CN102340382 A CN 102340382A
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dmrs
initialization
scrambler sequence
configuration
current transmission
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陈文洪
高秋彬
彭莹
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China Academy of Telecommunications Technology CATT
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Abstract

The invention relates to the field of communication, and discloses a method and device for configuring a DMRS (demodulation reference signal) scrambling code sequence so as to reduce signal interference between UE (user equipment) adopting DMRS multiplexing and guarantee the signal demodulation performance of UE. In the method, a base station refers to the current application scene, and indicates the initial value configuration of the downlink DMRS scrambling code sequence used by single UE or UE group in current transmission through a signaling so as to ensure that the inter-cell or in-cell UE can flexibly perform MU (multiple -user)-MIMO (multiple input multiple output) multiplexing, thereby reducing the mutual interference between the multiplexing UE and guaranteeing the signal demodulation performance of the UE; and meanwhile, the overhead of a PDCCH (physical downlink control channel) is reduced through joint coding, the configuration of the same DMRS scrambling code sequence for the UE of different cells can be flexibly supported, and the configuration of different DMRS scrambling code sequences for the UE of the same cell can be flexibly supported, thereby supporting high-rank MU-MIMO transmission and effectively increasing the system throughput.

Description

A kind of collocation method of DMRS scrambler sequence and device
Technical field
The present invention relates to the communications field, particularly a kind of collocation method of DMRS scrambler sequence and device.
Background technology
The uplink reference signals that in the transmission of LTE-A system descending, transmits mainly comprises DMRS (demodulated reference signal) and SRS (detection reference signal); The DMRS signal is mainly used in PDSCH (Physical Downlink Shared Channel) is carried out channel estimating and synchronous, so that receiving terminal success demodulating data.The scrambler sequence of DMRS signal (be called for short DMRS scrambler sequence) all is that the sub-district ID according to Serving cell carries out initial configuration, and the initial configuration mode of the DMRS scrambler sequence in the different districts generally all is different.At CoMP (Cooperative multiple point transmission; Cooperative multipoint transmission) in the system,, can carry out MU-MIMO (Multiple-user MIMO in order to improve spectrum efficiency; Multi-user multi-antenna) handles; The base station that is a plurality of sub-districts is given a plurality of UE transmission data simultaneously, perhaps receives the transmission data of a plurality of UE simultaneously, and these UE take identical physical resource and carry out multiplexing.
In present LTE-A system, descending DMRS scrambler sequence can be from a plurality of port transmission of network side, and generally, network side can send DMRS scrambler sequence (being called prot7, prot8......port14 respectively) through 8 ports.UE according to the channel estimating that obtains based on the DMRS scrambler sequence to carry out the detection of data.The DMRS scrambler sequence is generated by following formula:
r ( m ) = 1 2 ( 1 - 2 · c ( 2 m ) ) + j 1 2 ( 1 - 2 · c ( 2 m + 1 ) ) ,
Figure BDA0000103393760000012
Wherein, is RB (Resource Block) quantity of descending maximum; C (i) is a pseudo random sequence, and c (i) can carry out initialization with following formula one:
Figure BDA0000103393760000014
formula one
Wherein, n sBe time-gap number,
Figure BDA0000103393760000021
Be the sub-district ID of the Serving cell of UE, n SCIDBe the ID of the scramble sequence that adopts of UE, value is 0 or 1, generally, and n when adopting port7 and/or port8 (port 7 and/or port 8) only SCIDValue can be 0 or 1, under other situation the acquiescence value be 0.
When carrying out transmitting with sub-district MU-MIMO, UE can have two kinds of different DMRS port arrangement and two kinds of different scramble sequence ID (SCID) configuration, therefore can support 4 layers of multiplexing transmission based on DMRS at most.At this moment, different UE has four kinds of DMRS configurations at most, is respectively:
1) the DMRS configuration 1: antenna port=7, SCID=0;
2) the DMRS configuration 2: antenna port=8, SCID=0;
3) the DMRS configuration 3: antenna port=7, SCID=1;
4) the DMRS configuration 4: antenna port=8, SCID=1.
If 4 UE carry out MU-MIMO, then can adopt above configuration 1-4 respectively; If 2 UE carry out MU-MIMO and 2 streams of each UE transmission (promptly the number of plies of transmission is 2), then two UE use configuration 1-2 and 3-4 respectively.When in PDCCH (Physical Downlink Control Channel), carrying out descending scheduling; The number of plies of the current transmission of 3 bit joint instructions UE is adopted in the base station in corresponding D CI (descending scheduling indication) information; Used DMRS port and used SCID, wherein the part indication is used for the transmission of MU-MIMO.For example, the value of the 3 bit DCI that issue of base station and its corresponding deploy content can be shown in tables 0:
Table 0
Figure BDA0000103393760000022
The CoMP technology typically refers to the cooperation between a plurality of transmission points that separate on the geographical position.In general, a plurality of transmission points are base stations of different districts, a plurality of RRH of perhaps same cell base station control.Through the cooperation transmission between a plurality of transmission points, can effectively reduce the interference between the different transmission points, improve the particularly throughput of cell edge UE of UE.For a plurality of RRH that belong in the Macro zone (macrocell), can be configured to identical Cell ID (sub-district ID), also can be configured to different Cell ID and form a plurality of sub-districts.
A plurality of transmission points (sub-district) in the collaboration region can be given one or more UE transmission data simultaneously, to obtain the gain of Combined Treatment and MU-MIMO.If same resource is only given UE transmission data, then be called SU-JT (single user's joint transmission), as shown in Figure 1; If same resource is given a plurality of UE transmission data simultaneously, then be called MU-JT (multi-user association transmission), as shown in Figure 2.
For the situation of MU-JT, if a plurality of RRH forms different sub-districts, and multiplexing UE belongs to different sub-districts; For example, UE1 shown in Figure 2 belongs to Cell 1, and UE3 belongs to Cell 3; When then a base station sends the DMRS scrambler sequence for simultaneously a plurality of multiplexing UE; Owing to adopt different DMRS scrambler sequence initial methods to different UEs, therefore, the base station can't guarantee the DMRS scrambler sequence orthogonality each other of each UE through port.Phase mutual interference between the multiplexing UE at this moment is very big, can influence the demodulation performance of its data greatly, thereby reduces transmission rate.Therefore; Be necessary to let this moment the multiplexing UE that carries out the MU-JT transmission adopt identical DMRS scrambler sequence; Be that the base station is when being directed against different UEs and generating corresponding D MRS scrambler sequence; Employed pseudo random sequence of carrying out scrambling adopts identical initialization value, and no matter whether above-mentioned each UE belongs to same sub-district.
On the other hand, if the Cell ID of a plurality of RRH in the above situation is identical, then scrambler sequence is also identical in the sub-district, and the DMRS scrambler sequence that different UEs generates is also identical.In theory, if this moment, the space isolation between a plurality of RRH was better, then very low near the channel relevancy between the UE of each RRH, can multiplexing identical DMRS port to increase the capacity of DMRS.Yet in the practical application, the space isolation between the RRH is difficult to accurately control; If the space isolation between the RRH is undesirable; So this moment,, then still can there be bigger interference between each UE because each UE adopts identical DMRS scrambler sequence; This can influence the demodulation performance of its data greatly, thereby reduces transmission rate.Be necessary to be made into their scrambler sequence different this moment, to reduce the interference between the UE that adopts identical DMRS configuration.
In sum; Under the prior art; The initialization value of the DMRS scrambler sequence that each UE obtains all is pre-configured according to the Cell ID of its Serving cell by the base station, like this, and in practical application; The UE of different districts can not realize the orthogonality between port through identical DMRS scrambler sequence, and the UE of same sub-district can not realize the multiplexing of DMRS port through different DMRS scrambler sequence.
Summary of the invention
The embodiment of the invention provides a kind of collocation method and device of DMRS scrambler sequence, has adopted the signal between the multiplexing UE of DMRS to disturb in order to reduction, has guaranteed the signal demodulation performance of UE.
The concrete technical scheme that the embodiment of the invention provides is following:
A kind of collocation method of DMRS scrambler sequence comprises:
Confirm the initialization value configuration of the DMRS scrambler sequence that UE uses in the current transmission according to application scenarios;
Mail to said UE through the PDCCH signaling behind the initialization value configuration of the DMRS scrambler sequence that the said UE that confirms is used and other DMRS configuration information combined codings, make said UE obtain corresponding D MRS scrambler sequence according to the initialization value configuration that obtains.
A kind of configuration application process of DMRS scrambler sequence comprises:
Receive network side through the initialization value configuration of the DMRS scrambler sequence of PDCCH signaling and the indication of other DMRS configuration information combined codings, the initialization value configuration of the DMRS scrambler sequence of confirming according to said indication to use in the current transmission;
Initialization value configuration according to the DMRS scrambler sequence of confirming obtains corresponding D MRS scrambler sequence.
A kind of inking device of DMRS scrambler sequence comprises:
Confirm the unit, be used for confirming the initialization value configuration of the DMRS scrambler sequence that current transmission UE uses according to application scenarios;
Communication unit; Mail to said UE through the PDCCH signaling behind the initialization value configuration of the DMRS scrambler sequence that the said UE that is used for confirming uses and other DMRS configuration information combined codings, make said UE obtain corresponding D MRS scrambler sequence according to the initialization value configuration that obtains.
A kind of configuration application apparatus of DMRS scrambler sequence comprises:
Communication unit; Be used to receive network side through the initialization value configuration of the DMRS scrambler sequence of PDCCH signaling and the indication of other DMRS configuration information combined codings, the initialization value configuration of the DMRS scrambler sequence of confirming according to said indication to use in the current transmission;
Processing unit is used for the initialization value configuration according to the DMRS scrambler sequence of confirming, obtains corresponding D MRS scrambler sequence.
In the embodiment of the invention; The base station is with reference to the current application scene, indicates the initialization value configuration of the descending DMRS scrambler sequence that single UE or UE group use through signaling in current transmission, thereby it is multiplexing to guarantee that UE in minizone or the sub-district can carry out MU-MIMO neatly; Reduce the phase mutual interference between multiplexing UE; Guaranteed the signal demodulation performance of UE, also also reduced the expense of PDCCH simultaneously through combined coding, the PDCCH signaling only need increase by 1 overhead bit generally speaking; And can support the identical DMRS scrambler sequence of UE configuration of different districts flexibly; And the different DMRS scrambler sequence of UE configuration that can support same cells flexibly, thereby support to support that the MU-MIMO of high rank transmits, effectively promoted the throughput of system.
Description of drawings
Fig. 1 is prior art user's joint transmission sketch map that places an order;
Fig. 2 is a multi-user association transmission sketch map under the prior art;
Fig. 3 is a base station functions structural representation in the embodiment of the invention;
Fig. 4 is a UE illustrative view of functional configuration in the embodiment of the invention;
Fig. 5 is a UE configuration DMRS scrambler sequence flow chart for base station in the embodiment of the invention.
Embodiment
For fear of having adopted the signal between the multiplexing UE of DMRS to disturb; In the embodiment of the invention, network side is in the embodiment of the invention; The base station is with reference to the current application scene; The initialization value configuration of the descending DMRS scrambler sequence of in current transmission, using through signaling indication UE, thus it is multiplexing to guarantee that UE in minizone or the sub-district can carry out MU-MIMO neatly, reduces the phase mutual interference between multiplexing UE.In the present embodiment, the number of the UE of base station indication can for one can promptly can be single UE also for a plurality of, also can be the UE group, specifically look actual conditions and decide.
Below in conjunction with accompanying drawing the preferred embodiment of the present invention is elaborated.
Consult shown in Figure 3ly, in the embodiment of the invention, the base station comprises confirms unit 30 and communication unit 31, wherein,
Confirm unit 30, be used for confirming the initialization value configuration of the DMRS scrambler sequence that current transmission UE uses according to application scenarios;
Mail to this UE through the PDCCH signaling behind the communication unit 31, the initialization value configuration of the DMRS scrambler sequence that is used for the UE that confirms is used and other DMRS configuration information combined codings, make this UE obtain corresponding D MRS scrambler sequence according to the initialization value configuration that obtains.
Consult shown in Figure 4ly, in the embodiment of the invention, UE comprises communication unit 40 and processing unit 41, wherein,
Communication unit 40; Be used to receive network side through the initialization value configuration of the DMRS scrambler sequence of PDCCH signaling and the indication of other DMRS configuration information combined codings, the initialization value configuration of the DMRS scrambler sequence of confirming according to said indication to use in the current transmission;
Processing unit 41 is used for the initialization value configuration according to the DMRS scrambler sequence of confirming, obtains corresponding D MRS scrambler sequence.
Based on technique scheme, to consult shown in Figure 5ly, in the embodiment of the invention, the base station is that the detailed process of UE configuration DMRS scrambler sequence is following:
Step 500: the base station to the UE indication DMRS scrambler sequence initialization ID set to should UE being provided with, includes the initialization ID of at least one DMRS scrambler sequence through high-level signaling in this DMRS scrambler sequence initialization ID set.
In the embodiment of the invention, the high-level signaling that adopt the base station can be RRC (RRC (Radio Resource Control, a radio resource control) signaling.
On the other hand, if the UE side pre-configured initialization ID set, perhaps, the base station also can not sent initialization ID set through high-level signaling to UE, in the embodiment of the invention, step 500 be merely a kind of situation for example.
In the present embodiment, UE can adopt following dual mode when generating the DMRS scrambler sequence:
Mode one, adopt following formula to generate the DMRS scrambler sequence:
r ( m ) = 1 2 ( 1 - 2 · c ( 2 m ) ) + j 1 2 ( 1 - 2 · c ( 2 m + 1 ) ) ,
Figure BDA0000103393760000072
Wherein, is the RB quantity of descending maximum; Wherein,
Figure BDA0000103393760000074
is RB (Resource Block) quantity of descending maximum; C (i) is a pseudo random sequence, and c (i) can carry out initialization with following formula one or formula two:
Figure BDA0000103393760000075
(identical) formula one with present standardized method
Figure BDA0000103393760000076
formula two
Wherein, n sBe time-gap number,
Figure BDA0000103393760000077
Be the Cell ID of the Serving cell of UE, n SCIDBe the ID (being also referred to as DMRS scrambling ID) of DMRS scrambler sequence, value is 0 or 1 (only adopting port7 and/or effective at 8 o'clock, other situation values are defaulted as 0),
Figure BDA0000103393760000078
Be the initialization ID that the DMRS scrambler sequence of high-level signaling indication is passed through in the base station, as, the base station is through the available initialization ID of N the DMRS scrambler sequence different with the Cell ID of UE of high-level signaling indication.
Mode two, adopt following formula to generate the DMRS scrambler sequence:
r ( m ) = 1 2 ( 1 - 2 · c ( 2 m ) ) + j 1 2 ( 1 - 2 · c ( 2 m + 1 ) ) ,
Figure BDA00001033937600000710
Wherein,
Figure BDA00001033937600000711
is RB (Resource Block) quantity of descending maximum; C (i) is a pseudo random sequence, and c (i) can carry out initialization with following formula three:
Figure BDA00001033937600000712
formula three
Wherein, n sBe time-gap number, n SCIDBe the ID of DMRS scrambler sequence, value is 0 or 1, Be the initialization ID that the DMRS scrambler sequence of high-level signaling indication is passed through in the base station, as, the base station is through the available initialization value ID of N different DMRS scrambler sequence of high-level signaling indication.
In the present embodiment, can be separated by a period of time between step 500 and the step 510, not need to carry out continuously immediately.
Step 510: the initialization value configuration of the DMRS scrambler sequence that above-mentioned UE uses in the current transmission is confirmed in the base station according to application scenarios.
In the practical application, when execution in step 510, the initialization mode and the initialization ID configuration of the DMRS scrambler sequence that UE uses in the current transmission can be confirmed in the base station, also can only confirm the initialization ID configuration of the DMRS scrambler sequence that UE uses in the current transmission.For example; If the base station is confirmed UE and is adopted aforesaid way one to carry out the initialization of DMRS scrambler sequence; Then when execution in step 510; The base station need confirm that the initialization mode of the DMRS scrambler sequence that UE in the current transmission uses is based on formula one and also is based on formula two, and needs to confirm to adopt the initialization value ID configuration based on the corresponding DMRS scrambler sequence of the initialization mode of formula one or formula two, and with these information notices UE; Again for example; If the base station is confirmed UE and is adopted aforesaid way two to carry out the initialization of DMRS scrambler sequence; Then when execution in step 510, the initialization mode of the DMRS scrambler sequence that UE uses in acquiescence (UE is also like this) the current transmission of base station is based on formula three, so; The base station only need confirm to adopt the initialization ID configuration based on the corresponding DMRS scrambler sequence of the initialization mode of formula three to get final product, and with this information notice UE.
On the other hand; In the process of execution in step 510; The base station can be confirmed the initialization value configuration of the DMRS scrambler sequence that UE uses in the current transmission according to the UE scheduling situation in self compass of competency when the initialization value configuration of confirming the DMRS scrambler sequence that UE in the current transmission uses according to application scenarios; Also can basis and the base station of other sub-districts resource negotiation result to the UE (being above-mentioned UE) that carries out resource multiplex, confirm the initialization value configuration of the DMRS scrambler sequence that UE uses in the current transmission.
Certainly; In the present embodiment, the initialization mode of the DMRS scrambler sequence that the determined UE in base station uses in current transmission, can be initialization mode used in the existing standard (as; Initialization mode based on above-mentioned formula one); Also can be the new agreement of base station and UE initialization mode (as, based on the initialization mode of above-mentioned formula two, based on the initialization mode of above-mentioned formula three); Accordingly; The initialization ID of the DMRS scrambler sequence that the determined UE in base station uses in current transmission configuration can be the initialization ID of DMRS scrambler sequence used in the existing system, as; The Cell ID of the Serving cell of UE; Also can be the initialization ID in the initialization ID set of high-level signaling indication, in the present embodiment, be that example describes with the latter.
Step 520: mail to this UE through the PDCCH signaling behind the initialization value configuration of the DMRS scrambler sequence that the above-mentioned UE that the base station will be confirmed uses and other DMRS configuration information combined codings, make this UE obtain corresponding D MRS scrambler sequence according to the initialization value configuration that obtains.
Like this; After UE receives the indication of the initialization value configuration of network side through the DMRS scrambler sequence of PDCCH signaling and other DMRS configuration information combined codings; Just can be according to the initialization value configuration of the DMRS scrambler sequence of using in the definite current transmission of this indication; And, obtain corresponding D MRS scrambler sequence according to the initialization value configuration of the DMRS scrambler sequence of confirming.
When execution in step 520, the initialization value configuration of the DMRS scrambler sequence that the base station can be used above-mentioned UE is carried out mailing to above-mentioned UE through the PDCCH signaling behind the combined coding with a kind of or combination in any among DMRS the transmission number of plies, DMRS port and the DMRS scrambling ID.Accordingly; In the foregoing description, UE can (can be indicated by the high-level signaling that send the base station according to preset initialization mode after the initialization value that initialization ID gathers and the PDCCH signaling the is indicated configuration that combines the high-level signaling indication; Also can be local acquiescence); Initialization value configuration based on obtaining generates corresponding D MRS scrambler sequence, and according to this DMRS scrambler sequence the signal that receives in this transmission is carried out demodulation.
In the foregoing description; The base station indicates the initialization ID of its descending DMRS scrambler sequence to gather through high-level signaling to UE (can be single UE, also can be the UE group), and when carrying out downlink transfer at every turn; Notify its initialization value that in current transmission, uses configuration according to the current application scene to UE; Like this, network side just can be selected the initialization value configuration of suitable DMRS scrambler sequence according to the applied environment of reality neatly for UE, thereby has reduced the phase mutual interference of adopting between the multiplexing UE of DMRS; And then make the multiplexing UE of different districts realize signal in orthogonal property at the DMRS port; And the UE that makes same cells realized the multiplexing of DMRS port, effectively guaranteed the data transmission efficiency of UE, ensured the overall performance of system.
In the foregoing description; In the present embodiment; If UE adopts mode one to generate the DMRS scrambler sequence; Then the base station can be through the DCI information of carrying among PDCCH initialization mode and the initialization ID configuration notification UE with UE; Concrete method is: a kind of or combination in any in the DMRS number of plies, DMRS port and the SCID indication information of the initialization mode of UE and initialization ID configuration and existing 3 bits is carried out mailing to UE behind the combined coding, and the DCI after the expansion can be the 4-5 bit, and its instruction content is specific as follows (not to provide n SCIDIts value of configuration all be defaulted as 0):
Example 1:N=2, promptly initialization ID disposes two kinds of values, is respectively ID1 and ID2,2 layers of the highest supports of MU, then the instruction content of DCI behind combined coding is as shown in table 1:
Table 1
Figure BDA0000103393760000101
Example 2:N=2, promptly initialization ID disposes two kinds of values, is respectively ID1 and ID2,4 layers of the highest supports of MU, then the instruction content of DCI behind combined coding is as shown in table 2:
Table 2
Example 3:N=4, promptly initialization ID has disposed four kinds of values, is respectively ID1, ID2, ID3 and ID4,2 layers of the highest supports of MU, then the instruction content of DCI behind combined coding is as shown in table 3:
Table 3
Figure BDA0000103393760000112
Figure BDA0000103393760000121
Example 4:N=4, promptly initialization ID disposes four kinds of values, is respectively ID1, ID2, ID3 and ID4,3 layers of the highest supports of MU, then the instruction content of DCI behind combined coding is as shown in table 4:
Table 4
Example 5:N=4, promptly initialization ID disposes four kinds of values), be respectively ID1, ID2, ID3 and ID4,4 layers of the highest supports of MU, then the instruction content of DCI behind combined coding is as shown in table 5:
Table 5
Figure BDA0000103393760000131
Be different from the foregoing description; In the present embodiment; If UE adopts mode two to generate the DMRS scrambler sequence, then the base station can be through the DCI information of carrying among the PDCCH initialization ID configuration notification UE with UE, and concrete method is: a kind of or combination in any in the DMRS number of plies, DMRS port and the SCID indication information of the initialization ID configuration of UE and existing 3 bits is carried out mailing to UE behind the combined coding; DCI after the expansion can be the 4-5 bit, and its instruction content is specific as follows: (do not provide n SCIDIts value of configuration all be defaulted as 0):
Example 6:N=2, promptly initialization ID disposes two kinds of values, is respectively ID1 and ID2,2 layers of the highest supports of MU, then the instruction content of DCI behind combined coding is as shown in table 6:
Table 6
Figure BDA0000103393760000141
Example 7:N=2, promptly initialization ID disposes two kinds of values, is respectively ID1 and ID2,4 layers of the highest supports of MU, then the instruction content of DCI behind combined coding is as shown in table 7:
Table 7
Figure BDA0000103393760000151
Example 8:N=4, promptly initialization ID disposes four kinds of values, is respectively ID1, ID2, ID3 and ID4, and this ID does not use n SCID, 2 layers of the highest supports of MU, then the instruction content of DCI behind combined coding is as shown in table 8:
Table 8
Figure BDA0000103393760000161
Example 9:N=4, promptly initialization ID disposes four kinds of values, is respectively ID1, ID2, ID3 and ID4, and this ID does not use n SCID, 3 layers of the highest supports of MU, then the instruction content of DCI behind combined coding is as shown in table 9:
Table 9
Figure BDA0000103393760000162
Figure BDA0000103393760000171
Example 10:N=4, promptly initialization ID disposes four kinds of values, is respectively ID1, ID2, ID3 and ID4, and this ID does not use n SCID, 4 layers of the highest supports of MU, then the instruction content of DCI behind combined coding is as shown in table 10:
Table 10
Figure BDA0000103393760000172
Figure BDA0000103393760000181
Example 11:N=2, promptly initialization ID disposes two kinds of values, is respectively ID1 and ID2, and this ID uses n SCID, 2 layers of the highest supports of MU, then the instruction content of DCI behind combined coding is as shown in table 11:
Table 11
Figure BDA0000103393760000182
Figure BDA0000103393760000191
Example 12:N=2, promptly initialization ID disposes two kinds of values, is respectively ID1 and ID2, and this ID uses n SCID, 3 layers of the highest supports of MU, then the instruction content of DCI behind combined coding is as shown in table 12:
Table 12
Figure BDA0000103393760000192
The embodiment of the invention has extensive applicability; Can be used for any antenna amount and aerial array (such as linear array, polarization battle array), arbitrarily the downlink transfer under duplex system (TDD system or FDD system) and any sending mode (such as SU-MIMO, MU-MIMO, CoMP).Special; The content of difference DCI value institute index can exchange; Promptly can the instruction content of arbitrary other DCI value index in the instruction content of certain DCI value index and the same form be exchanged; As long as instruction content does not exceed the scope of institute's table, all within the protection range of this patent.
In sum, in the embodiment of the invention, the base station is with reference to the current application scene; Indicate single UE or UE to organize the initialization value configuration of the descending DMRS scrambler sequence of in current transmission, using through signaling; It is multiplexing that thereby the UE in assurance minizone or the sub-district can carry out MU-MIMO neatly, reduces the phase mutual interference between multiplexing UE, guaranteed the signal demodulation performance of UE; Also also reduced simultaneously the expense of PDCCH through combined coding; The PDCCH signaling only need increase by 1 overhead bit generally speaking, and can support the identical DMRS scrambler sequence of UE configuration of different districts flexibly, and the different DMRS scrambler sequence of UE configuration that can support same cells flexibly; Thereby support to support the MU-MIMO transmission of high rank, effectively promoted the throughput of system.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.

Claims (18)

1. the collocation method of a demodulated reference signal DMRS scrambler sequence is characterized in that, comprising:
Confirm the initialization value configuration of the DMRS scrambler sequence that UE uses in the current transmission according to application scenarios;
Mail to said UE through the physical downlink control channel PDCCH signaling behind the initialization value configuration of the DMRS scrambler sequence that the said UE that confirms is used and other DMRS configuration information combined codings, make said UE obtain corresponding D MRS scrambler sequence according to the initialization value configuration that obtains.
2. the method for claim 1 is characterized in that, the said initialization value configuration of confirming the DMRS scrambler sequence of UE use in the current transmission according to application scenarios comprises:
Confirm the initialization mode and the initialization ID configuration of the DMRS scrambler sequence that UE described in the current transmission uses; Perhaps,
Only confirm the initialization ID configuration of the DMRS scrambler sequence that UE uses described in the current transmission.
3. method as claimed in claim 2; It is characterized in that the initialization ID configuration of the DMRS scrambler sequence that said UE uses is the sub-district ID of the Serving cell of said UE; Perhaps, for passing through the initialization ID of high-level signaling in the initialization ID of said UE notice set.
4. the method for claim 1 is characterized in that, the said initialization value configuration of confirming the DMRS scrambler sequence of UE use in the current transmission according to application scenarios comprises:
According to the scheduling of the UE in local compass of competency situation, confirm the initialization value configuration of the DMRS scrambler sequence that UE described in the current transmission uses; Perhaps,
According to the base station of other sub-districts resource negotiation result to said UE, confirm the initialization value configuration of the DMRS scrambler sequence that UE described in the current transmission uses.
5. the method for claim 1 is characterized in that, mails to said UE through the PDCCH signaling behind the initialization value configuration of the DMRS scrambler sequence that the said UE that confirms is used and other DMRS configuration information combined codings, comprising:
The initialization value configuration of the DMRS scrambler sequence that the said UE that confirms is used, carry out combined coding with a kind of or combination in any among DMRS the transmission number of plies, DMRS port arrangement and the DMRS scrambling ID after, mail to said UE through the PDCCH signaling.
6. the configuration application process of a demodulated reference signal DMRS scrambler sequence is characterized in that, comprising:
Receive network side through the initialization value configuration of the DMRS scrambler sequence of physical downlink control channel PDCCH signaling and the indication of other DMRS configuration information combined codings, the initialization value configuration of the DMRS scrambler sequence of confirming according to said indication to use in the current transmission;
Initialization value configuration according to the DMRS scrambler sequence of confirming obtains corresponding D MRS scrambler sequence.
7. method as claimed in claim 6; It is characterized in that; Receive network side through the initialization value configuration of the DMRS scrambler sequence of PDCCH signaling and the indication of other DMRS configuration information combined codings; The initialization value configuration of the DMRS scrambler sequence of confirming according to said indication to use in the current transmission comprises:
According to the indication that network side adopts the combined coding mode to send, the initialization mode of the DMRS scrambler sequence of confirming to use in the current transmission disposes with initialization ID; Perhaps,
According to the indication that network side adopts the combined coding mode to send, the initialization ID configuration of the DMRS scrambler sequence of using in only definite current transmission.
8. method as claimed in claim 7 is characterized in that, the initialization ID of the DMRS scrambler sequence of using in the said current transmission is configured to the sub-district ID of Serving cell, perhaps, is the initialization ID in the initialization ID set that obtains through high-level signaling.
9. method as claimed in claim 7 is characterized in that, the initialization mode of the DMRS scrambler sequence of using in the said current transmission is the initialization mode that adopts in the existing standard, perhaps, for the initialization mode of network side agreement.
10. the inking device of a demodulated reference signal DMRS scrambler sequence is characterized in that, comprising:
Confirm the unit, be used for confirming the initialization value configuration of the DMRS scrambler sequence that current transmission UE uses according to application scenarios;
Communication unit; Mail to said UE through the physical downlink control channel PDCCH signaling behind the initialization value configuration of the DMRS scrambler sequence that the said UE that is used for confirming uses and other DMRS configuration information combined codings, make said UE obtain corresponding D MRS scrambler sequence according to the initialization value configuration that obtains.
11. device as claimed in claim 10; It is characterized in that; When the initialization value configuration of the DMRS scrambler sequence that UE uses in the current transmission is confirmed according to application scenarios in said definite unit, confirm the initialization mode and the initialization ID configuration of the DMRS scrambler sequence that UE described in the current transmission uses; Perhaps, only confirm the initialization ID configuration of the DMRS scrambler sequence that UE uses described in the current transmission.
12. device as claimed in claim 11; It is characterized in that the initialization ID configuration of the DMRS scrambler sequence that the UE that said definite unit is confirmed uses is the sub-district ID of the Serving cell of said UE; Perhaps, for passing through the initialization ID of high-level signaling in the initialization ID of said UE notice set.
13. device as claimed in claim 10; It is characterized in that; When the initialization value configuration of the DMRS scrambler sequence that UE uses in the current transmission is confirmed according to application scenarios in said definite unit; According to the scheduling of the UE in local compass of competency situation, confirm the initialization value configuration of the DMRS scrambler sequence that UE described in the current transmission uses; Perhaps, according to the base station of other sub-districts resource negotiation result to said UE, confirm the initialization value configuration of the DMRS scrambler sequence that UE described in the current transmission uses.
14. device as claimed in claim 10; It is characterized in that; When mailing to said UE through the PDCCH signaling behind the initialization value configuration of the DMRS scrambler sequence that the said UE that said communication unit will be confirmed uses and other DMRS configuration information combined codings; The initialization value configuration of the DMRS scrambler sequence that the said UE that confirms is used, carry out combined coding with a kind of or combination in any among DMRS the transmission number of plies, DMRS port arrangement and the DMRS scrambling ID after, mail to said UE through the PDCCH signaling.
15. the configuration application apparatus of a demodulated reference signal DMRS scrambler sequence is characterized in that, comprising:
Communication unit; Be used to receive network side through the initialization value configuration of the DMRS scrambler sequence of physical downlink control channel PDCCH signaling and the indication of other DMRS configuration information combined codings, the initialization value configuration of the DMRS scrambler sequence of confirming according to said indication to use in the current transmission;
Processing unit is used for the initialization value configuration according to the DMRS scrambler sequence of confirming, obtains corresponding D MRS scrambler sequence.
16. device as claimed in claim 15; It is characterized in that; Said communication unit receives network side through the initialization value configuration of the DMRS scrambler sequence of PDCCH signaling and the indication of other DMRS configuration information combined codings; During the initialization value configuration of the DMRS scrambler sequence of confirming according to said indication to use in the current transmission, according to the indication that network side adopts the combined coding mode to send, the initialization mode of the DMRS scrambler sequence of confirming to use in the current transmission disposes with initialization ID; Perhaps, according to the indication that network side adopts the combined coding mode to send, the initialization ID configuration of the DMRS scrambler sequence of using in only definite current transmission.
17. device as claimed in claim 16; It is characterized in that; The initialization ID of the DMRS scrambler sequence of using in the current transmission that said communication unit is confirmed is configured to the sub-district ID of Serving cell, perhaps, is the initialization ID in the initialization ID set that obtains through high-level signaling.
18. device as claimed in claim 16 is characterized in that, the initialization mode of the DMRS scrambler sequence that said processing unit uses in current transmission is the initialization mode that adopts in the existing standard, perhaps, for the initialization mode of network side agreement.
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