CN102447524A - Information indication method and equipment - Google Patents
Information indication method and equipment Download PDFInfo
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- CN102447524A CN102447524A CN2010105116148A CN201010511614A CN102447524A CN 102447524 A CN102447524 A CN 102447524A CN 2010105116148 A CN2010105116148 A CN 2010105116148A CN 201010511614 A CN201010511614 A CN 201010511614A CN 102447524 A CN102447524 A CN 102447524A
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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
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0092—Indication of how the channel is divided
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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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- 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
- H04L5/0062—Avoidance of ingress interference, e.g. ham radio channels
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Abstract
The embodiment of the invention provides an information indication method, comprising the steps: network side equipment and user equipment (UE) communicates and distributes corresponding data streams for the UE according to UE attributes; the network side equipment sends downlink control information (DCI) to the UE, wherein the DCI comprises DMRS (Demodulation Reference Symbol) port/SCID (Scrambling Initialization) combined or DMRS port/SCID/Rank combined information indication; and the network side equipment sends the corresponding data stream to the UE through the DMRS port. The embodiment of the invention further provides the network side equipment and the UE. According to the scheme provided by the invention, by means of combined coding of a newly introduced control bit and transport block switch as well as an NDI (New Data Indication) bit state under single codeword transmission, the signalling expense can be effectively reduced. In addition, the network side equipment informs a user of DMRS distribution and the SCID of the DMRS by means of the DCI, so that the user can determine whether a scrambling user using same SCID as that of the user exists or not and perform effective inhibition on the scrambling.
Description
Technical field
The present invention relates to digital communicating field, particularly, the present invention relates to the method and apparatus of information indication.
Background technology
Move the developing direction that becomes modern communication technology with the broadband; 3GPP (3rd GenerationPartnership Project; Third generation partner program) is devoted to LTE (Long TermEvolution; Long Term Evolution) system is as the evolution of 3G system, and target is that development 3GPP wireless access technology is towards high data rate, the low delay and the evolution of optimization packet data application direction.
At descending MIMO (Multi-input Multi-output; Single user's multiple-input, multiple-output) in the transmission course; ENB will be according to each UE (User Equipment; Factors such as channel condition subscriber equipment), business characteristic and priority are distributed the parallel data stream of some for each UE that is scheduled, and each data flow wherein is called one deck.In order to support maximum 8 layers space multiplexing technique, will define the DMRS (Demodulation Reference Symbol, demodulation reference mark) of 8 ports among the LTE-A (LongTerm Evolution Advanced, Long Term Evolution is senior).DMRS has adopted the precoding processing identical with data, and UE is through just knowing precoding equivalent channel matrix afterwards, the line data demodulation of going forward side by side to the measurement of DMRS.The descending SU-MIMO of LTE-A can support 8 layers at most, but considers the maximum MU-MIMO that only support total Rank=4 of possibility from signaling consumption and performance gain angle.Will continue the mixing SU/MU transmission mode among the Rel-9 among the LTE Rel-10; Promptly support SU (Single User simultaneously through a kind of unified transmission mode; Single user) with MU-MIMO (Multiuser Multi-input Multi-output; Multi-user's multiple-input, multiple-output), realize the dynamic switching of SU and MU-MIMO.
In order to realize higher peak rate, the descending SU-MIMO of LTE-A can support the parallel transmission of 8 data Layers at most.In order to support the flexible spatial preconditioning technique, the LTE-A down link will adopt the transmission means based on demodulation reference mark DMRS.To define 8 DMRS antenna ports in the LTE Rel-10 standard, in downlink transmission process, eNB need pass through the distribution condition of DCI (DownlinkControl Information, Downlink Control Information) indication DMRS port.For receiving algorithms such as support MMSE in MU-MIMO; To suppress co-channel interference better; Not only need indicate the DMRS antenna port distribution condition of each UE self that is scheduled, also need in Downlink Control Information, notifying with it, the port of the UE of common scheduling takies situation.In addition, also need indicate in the descending control signaling, so that the user can normally receive data the employed SCID of DMRS (Scrambling initialization ID, scrambler initialization ID).
Provided the DMRS pattern when having confirmed Rank1-4 at present among the LTE-A among Fig. 1.The DMRS pattern of Rank5-8 but can confirm basically in the DMRS pattern of Rank5-8 that each DMRS antenna port will carry out multiplexing through the mode of CDM-FDM at present just under discussion.Provided the DMRS pattern example of Rank5-8 among Fig. 2.
ENB need indicate the DMRS port assignment situation of the UE that is scheduled through Downlink Control Information in the downlink transmission process; Consider from the angle of signaling consumption; Need not support port indicating mode fully flexibly, general several kinds of port combination when only needing to consider every kind of total Rank get final product.Provided in the table 1 a kind of when utilizing the transmission of 3 bit control informations and single codeword vacant NDI (New DataIndication, new data indication) bit indicate the scheme of DMRS distribution condition jointly, wherein TB is transmission block Transport Block.
The indication of table 1.DMRS port 3 bits
Such scheme is introduced the indication that 3 overhead bits are used for the DMRS port assignment situation of UE self, and vacant NDI bit reduced expense when this scheme had been utilized the single codeword transmission.But such scheme is not supported the joint instructions of DMRS port and SCID, therefore also needs 1 bit to be used for the SCID indication separately, and the indication information that is used for port+SCID in this case will reach 4 bits, and obviously the utilance of information bit is lower.
In addition, in the such scheme, UE can't know whether there is the interfering data that has disposed identical SCID, therefore also can't use detection algorithms such as ZF, MMSE that interference is suppressed, and can not make full use of existing resources, optimizes the receptivity of UE.
Therefore, be necessary to propose high-efficiency information indication scheme more, to solve the problem that exists in the prior art.
Summary of the invention
The object of the invention is intended to solve at least one of above-mentioned technological deficiency; Particularly notify the assembled state of DMRS port assignment and SCID through downlink signaling; The state of NDI bit carries out combined coding when control bit through new introducing and transmission block switch and single codeword transmission, to reduce signaling consumption.On the other hand, the user can also determine whether to have the interference user that uses identical SCID with it through receiving control information, and interference is effectively suppressed.
In order to achieve the above object, embodiments of the invention have proposed a kind of method of information indication on the one hand, may further comprise the steps:
Network equipment and user equipment (UE) communicate, and are that said UE distributes corresponding data flow according to the attribute of said UE;
Said network equipment sends Downlink Control Information DCI to said UE, and said DCI comprises the information indication of DMRS port/SCID associating or DMRS port/SCID/Rank associating;
Said network equipment sends to said UE through said DMRS port with corresponding data flow.
Embodiments of the invention have also proposed a kind of method of information indication on the other hand, may further comprise the steps:
User equipment (UE) and network equipment communicate, and said network equipment is that said UE distributes corresponding data flow according to the attribute of said UE;
Said UE receives the Downlink Control Information DCI that said network equipment sends, and said DCI comprises the information indication of DMRS port/SCID associating or DMRS port/SCID/Rank associating;
Said UE receives the corresponding data flow that said network equipment sends through said DMRS port.
Embodiments of the invention have also proposed a kind of network equipment on the other hand, comprise transceiver module and coding module,
Said coding module is used for encoding send Downlink Control Information DCI to user equipment (UE), and said DCI comprises the information indication of DMRS port/SCID associating or DMRS port/SCID/Rank associating;
Said transceiver module is used for communicating with said UE, is that said UE distributes corresponding data flow according to the attribute of said UE, and through said DMRS port corresponding data flow is sent to said UE.
Embodiments of the invention have also proposed a kind of user equipment (UE) on the other hand, comprise transceiver module and decoding module,
Said decoding module is used for the Downlink Control Information DCI according to the network equipment transmission, and decoding obtaining the information indication of DMRS port/SCID associating or DMRS port/SCID/Rank associating;
Said transceiver module is used for communicating with network equipment, and said network equipment is that said UE distributes corresponding data flow according to the attribute of said UE, and receives the corresponding data flow that said network equipment sends through said DMRS port.
The state of the such scheme that the present invention proposes, the control bit through new introducing NDI bit during with transmission block switch and single codeword transmission carries out combined coding, with the reduction signaling consumption.In addition, network equipment is notified the SCID of user DMRS port assignment and DMRS through DCI, makes that the user can determine whether to have the interference user that uses identical SCID with it, and interference is effectively suppressed.The such scheme that the present invention proposes, very little to the change of existing system, can not influence the compatibility of system, and realize simple, efficient.
Aspect that the present invention adds and advantage part in the following description provide, and part will become obviously from the following description, or recognize through practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously with easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
DMRS pattern sketch map when Fig. 1 is Rank1-4;
DMRS pattern sketch map when Fig. 2 is Rank5-8;
Fig. 3 is the flow chart of the method for a kind of information indication of the embodiment of the invention;
Fig. 4 is the flow chart of the method for a kind of information indication of another embodiment of the present invention;
Fig. 5 is the structural representation of embodiment of the invention information indicating equipment.
Embodiment
Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the present invention, and can not be interpreted as limitation of the present invention.
To the problem that existing scheme exists, the present invention at first proposes a kind ofly can realize antenna port and SCID joint instructions method.For joint instructions DMRS port and SCID, need to consider its combinations of states.Consider from the angle of paring down expenses, should avoid port assignment mode fully flexibly.
For the ease of understanding the present invention, launch explanation below in conjunction with the concrete condition in the existing protocol.
For example, when Rank1 transmits, only consider to distribute port 7 or 8, the Rank2 transmission time only consider port 7, the combination of 8}, Rank3 and the above mode one to one that then adopts.Provided the assembled scheme of port assignment and Rank in the table 2.
The corresponding relation of table 2.DMRS port assignment mode and Rank
| Rank | Possible port assignment mode |
| 1 | { 7} or { 8} |
| 2 | {7，8} |
| 3 | {7，8，9} |
| 4 | {7，8，9，10} |
| 5 | {7，8，9，10，11} |
| 6 | {7，8，9，10，11，12} |
| 7 | {7，8，9，10，11，12，13} |
| 8 | {7，8，9，10，11，12，13，14} |
Total number of plies of MU-MIMO can reach 4 layers among the LTE-A, and wherein each UE uses two-layer, therefore only relevant with the Rank1-2 transmission as far as the value of each UE SCID at most.According to above-mentioned restriction, can be table 3 with the step refining that is combined into of port assignment and SCID.
The assembled state of table 3.DMRS port assignment and SCID
Consider that Rank greater than the scene that 1 single codeword retransmits, must comprise the indication information to the transmission of single codeword multilayer in the design of combined coding.Therefore, need the combinations of states of indication to represent by table 4.
Table 4. comprises the DMRS port assignment of single codeword re-transmission and the assembled state of SCID
Can find out from the preamble analysis,, need more bit number usually if the indication of DMRS port assignment situation and the indication of SCID distribution condition are indicated separately.
The scheme that the present invention proposes is based on following principle:
Defined after the combination of DMRS port assignment and SCID, need represent above-mentioned combinations of states through specific control information.The present invention introduces DMRS port/SCID indication information territory in descending DCI; Perhaps DMRS port/SCID/Rank indication information territory; Suppose that the combination of DMRS port assignment and SCID or the combination of DMRS port/SCID/Rank comprise M kind state altogether; And do not adopt any compression coding mode, then indication information is
bit.In order to reduce signaling consumption, can through with DCI in other information carry out combined coding.For example the Rank of certain UE was more than or equal to 2 o'clock, and two code words are generally adopted in the transmission of data.Need retransmit if certain transmission block makes a mistake, and another transmission block does not have transfer of data, then need adopt the single codeword transmission.The switch of transmission block is through modulation coding mode (MCS) and redundancy versions (RV) information joint instructions among the DCI.During single codeword transmission simultaneously, the NDI bit corresponding with being closed code word is just vacant among the DCI comes out.In order to reduce the expense of control signaling, the NDI bit of vacant code word carries out combined coding with the new control information of introducing in the time of can utilizing the transmission of code word switch and single codeword.
In order to realize the present invention's purpose, the invention discloses the method for a kind of information indication, may further comprise the steps: network equipment and user equipment (UE) communicate, and are that said UE distributes corresponding data flow according to the attribute of said UE; Said network equipment sends Downlink Control Information DCI to said UE, and said DCI comprises the information indication of DMRS port/SCID associating or DMRS port/SCID/Rank associating; Said network equipment sends to said UE through said DMRS port with corresponding data flow.
As shown in Figure 3, the flow chart for the method for a kind of information of embodiment of the invention indication may further comprise the steps:
S301: network equipment and user equipment (UE) communicate.
In step S301, network equipment and user equipment (UE) communicate, and are that UE distributes corresponding data flow according to the attribute of UE.
Particularly, in descending MIMO transmission course, eNB will distribute the parallel data stream of some for each UE that is scheduled according to the factors such as channel condition, business characteristic and priority of each UE, and each data flow wherein is called one deck.
S302: network equipment sends Downlink Control Information DCI to UE, and wherein DCI comprises the information indication of DMRS port/SCID associating or DMRS port/SCID/Rank associating.
In step S302, network equipment sends Downlink Control Information DCI to said UE, and said DCI comprises the information indication of DMRS port/SCID associating or DMRS port/SCID/Rank associating.
Particularly, network equipment carries out combined coding with said information indication with the NDI control information, is used to indicate DMRS port and SCID information, perhaps is used to indicate DMRS port, SCID information and Rank information.
Wherein, the NDI control information comprises following state:
During the single codeword transmission, be closed the corresponding NDI=0 of code word;
During the single codeword transmission, be closed the corresponding NDI=1 of code word;
During the transmission of dicode word, NDI=0 or 1.
Therefore, when the state that the information indication need comprise is M, represent that the bit number n of said information indication meets the following conditions: 3 * 2
n>=M.
In conjunction with concrete condition, be exemplified below, for the information indication is carried out combined coding with the NDI control information, be used to indicate DMRS port and SCID information, the joint instructions correspondence table that obtains is following:
Table 5.DMRS/SCID joint instructions
In this object lesson, provided an instance that carries out combined coding indication DMRS port assignment and SCID combination according to such scheme in the table 5, wherein, maximum MU-MIMO Rank=4 obviously, needs to introduce the overhead of 3 bits altogether.For existing scheme, the control expense is identical, but amount of information provided by the invention horn of plenty more.
For the information indication is carried out combined coding with the NDI control information, be used to indicate the information indication of DMRS port/SCID/Rank associating, be exemplified below:
In nontransparent MU-MIMO, the relevant information that need in the control signaling, indicate pairing UE.Transparent MU-MIMO refers to UE and does not know whether to comprise other UE that use identical physical resources piece PRB with this UE.Nontransparent MU-MIMO is that UE can know whether comprise other UE that use identical physical resources piece PRB with this UE.Therefore the indicated combinations of states of present embodiment also comprises the interior total Rank information of DMRS group of using identical SCID with this UE, and is as shown in table 6.
The combinations of states of the nontransparent MU-MIMO of table 6.
Defined after the combination of DMRS port assignment and SCID, need represent above-mentioned combinations of states through specific control information.In order to reduce the expense of control signaling, the NDI bit of vacant code word carries out combined coding with the new control information of introducing in the time of can utilizing the transmission of code word switch and single codeword.The combination of actual code word switch and NDI comprises three kinds of states:
During the single codeword transmission, be closed the corresponding NDI=0 of code word;
During the single codeword transmission, be closed the corresponding NDI=1 of code word;
During the transmission of dicode word, NDI=0 or 1.
Be used for the united information indication if newly introduce the n bit, then require 3 * 2 in the combined coding
n>=M.
Table 7.DMRS/SCID/Rank joint instructions
Provided an instance that carries out total Rank combination in combined coding indication DMRS port assignment and SCID and the DMRS group according to such scheme in the table 7.In order to support the downlink transfer of 8 layers of maximums, need to introduce the overhead of 3 bits altogether.For existing scheme, the control expense is identical, but the amount of information that present embodiment provides horn of plenty more.
S303: network equipment sends data through the DMRS port to UE.
In step S303, network equipment sends to said UE through the said DMRS port of in step S302, confirming with corresponding data flow.
In the above-described embodiments, network equipment includes but not limited to base station or via node, for example, if other network equipment can be realized functions such as resource allocation, data transmit-receive, also is equivalent to above-mentioned network equipment.
As shown in Figure 4, the flow chart for the method for a kind of information of another embodiment of the present invention indication may further comprise the steps:
S401: user equipment (UE) and network equipment communicate.
In step S401, user equipment (UE) and network equipment communicate, and network equipment is that UE distributes corresponding data flow according to the attribute of UE.
Particularly, in descending MIMO transmission course, eNB will distribute the parallel data stream of some for each UE that is scheduled according to the factors such as channel condition, business characteristic and priority of each UE, and each data flow wherein is called one deck.
S402:UE receives network equipment and sends Downlink Control Information DCI, and wherein DCI comprises the information indication of DMRS port/SCID associating or DMRS port/SCID/Rank associating.
In step S402, UE receives the Downlink Control Information DCI that network equipment sends, and DCI comprises the information indication of DMRS port/SCID associating or DMRS port/SCID/Rank associating.
Particularly, UE carries out joint decoding according to said information indication with the NDI control information, is used to indicate DMRS port and SCID information, perhaps is used to indicate DMRS port, SCID information and Rank information.
Wherein, the NDI control information comprises following state:
During the single codeword transmission, be closed the corresponding NDI=0 of code word;
During the single codeword transmission, be closed the corresponding NDI=1 of code word;
During the transmission of dicode word, NDI=0 or 1.
Therefore, when the state that the information indication need comprise is M, represent that the bit number n of said information indication meets the following conditions: 3 * 2
n>=M.
In addition, after UE obtains said DMRS port, SCID information and Rank information, can also judge whether to use the interference eliminated of identical SCID.
Particularly, judge whether to use the interference eliminated of identical SCID to comprise:
The Rank information of obtaining as UE is greater than 1, and the network equipment port number of distributing to self is when counting less than Rank, and said UE judges to have and uses other UE of identical SCID to exist;
Thereafter, UE carries out interference eliminated according to other users that use identical SCID.
Example below in conjunction with concrete launches explanation to such scheme.
For the information indication is carried out combined coding with the NDI control information, be used to indicate DMRS port and SCID information, the joint instructions correspondence table that obtains is as shown in table 5.In this object lesson, provided an instance that carries out combined coding indication DMRS port assignment and SCID combination according to such scheme in the table 5, wherein, maximum MU-MIMO Rank=4 obviously, needs to introduce the overhead of 3 bits altogether.For existing scheme, the control expense is identical, but amount of information provided by the invention horn of plenty more.
For the information indication is carried out combined coding with the NDI control information, be used to indicate the information indication of DMRS port/SCID/Rank associating, the joint instructions correspondence table that obtains is as shown in table 7.Provided an instance that carries out total Rank combination in combined coding indication DMRS port assignment and SCID and the DMRS group according to such scheme in the table 7.In order to support the downlink transfer of 8 layers of maximums, need to introduce the overhead of 3 bits altogether.For existing scheme, the control expense is identical, but the amount of information that present embodiment provides horn of plenty more.
S403:UE receives the data that network equipment sends through the DMRS port.
In step S403, UE receives the corresponding data flow that network equipment sends through the said DMRS port of in step S402, confirming.
In addition; Corresponding to the status number in the table 71 to status number 4; After UE obtains said DMRS port, SCID information and Rank information, can judge the Rank information of obtaining greater than 1, and the port number that network equipment is distributed to self is less than the Rank number; Therefore, UE judges to have other UE existence of using identical SCID.
Thereafter, UE carries out interference eliminated according to other users that use identical SCID, can utilize urgent zero (ZF), least mean-square error detection algorithms such as (MMSE) that interference is suppressed like this, helps improving the receptivity of UE.
In the above-described embodiments, network equipment includes but not limited to base station or via node, for example, if other network equipment can be realized functions such as resource allocation, data transmit-receive, also is equivalent to above-mentioned network equipment.Corresponding and said method, as shown in Figure 5, the embodiment of the invention has also proposed a kind of network equipment 100 and subscriber equipment 200.
Wherein, network equipment 100 comprises transceiver module 110 and coding module 120.
Particularly, coding module 120 carries out combined coding with the information indication with the NDI control information, is used to indicate DMRS port and SCID information, perhaps is used to indicate DMRS port, SCID information and Rank information.
Wherein, the NDI control information comprises following state:
During the single codeword transmission, be closed the corresponding NDI=0 of code word;
During the single codeword transmission, be closed the corresponding NDI=1 of code word;
During the transmission of dicode word, NDI=0 or 1.
Therefore, when the state that the information indication need comprise was M, the bit number n of expression information indication met the following conditions: 3 * 2
n>=M.
For the information indication is carried out combined coding with the NDI control information, be used to indicate DMRS port and SCID information, the joint instructions correspondence table that obtains is as shown in table 5.In this object lesson, provided an instance that carries out combined coding indication DMRS port assignment and SCID combination according to such scheme in the table 5, wherein, maximum MU-MIMO Rank=4 obviously, needs to introduce the overhead of 3 bits altogether.For existing scheme, the control expense is identical, but amount of information provided by the invention horn of plenty more.
For the information indication is carried out combined coding with the NDI control information, be used to indicate the information indication of DMRS port/SCID/Rank associating, the joint instructions correspondence table that obtains is as shown in table 7.Provided an instance that carries out total Rank combination in combined coding indication DMRS port assignment and SCID and the DMRS group according to such scheme in the table 7.In order to support the downlink transfer of 8 layers of maximums, need to introduce the overhead of 3 bits altogether.For existing scheme, the control expense is identical, but the amount of information that present embodiment provides horn of plenty more.
In concrete network, network equipment includes but not limited to base station or via node, for example, if other network equipment can be realized functions such as resource allocation, data transmit-receive, also is equivalent to above-mentioned network equipment.
Wherein, user equipment (UE) 200 comprises transceiver module 210 and decoding module 220.
Particularly, decoding module 220 carries out joint decoding according to information indication and NDI control information, is used to indicate DMRS port and SCID information, perhaps is used to indicate DMRS port, SCID information and Rank information.
Wherein, the NDI control information comprises following state:
During the single codeword transmission, be closed the corresponding NDI=0 of code word;
During the single codeword transmission, be closed the corresponding NDI=1 of code word;
During the transmission of dicode word, NDI=0 or 1.
Therefore, when the state that the information indication need comprise was M, the bit number n of expression information indication met the following conditions: 3 * 2
n>=M.
For the information indication is carried out combined coding with the NDI control information, be used to indicate DMRS port and SCID information, the joint instructions correspondence table that obtains is as shown in table 5.In this object lesson, provided an instance that carries out combined coding indication DMRS port assignment and SCID combination according to such scheme in the table 5, wherein, maximum MU-MIMO Rank=4 obviously, needs to introduce the overhead of 3 bits altogether.For existing scheme, the control expense is identical, but amount of information provided by the invention horn of plenty more.
For the information indication is carried out combined coding with the NDI control information, be used to indicate the information indication of DMRS port/SCID/Rank associating, the joint instructions correspondence table that obtains is as shown in table 7.Provided an instance that carries out total Rank combination in combined coding indication DMRS port assignment and SCID and the DMRS group according to such scheme in the table 7.In order to support the downlink transfer of 8 layers of maximums, need to introduce the overhead of 3 bits altogether.For existing scheme, the control expense is identical, but the amount of information that present embodiment provides horn of plenty more.
In addition, user equipment (UE) 200 also comprises judge module 230.
UE200 obtains after DMRS port, SCID information and the Rank information, and judge module 230 judges whether to use the interference eliminated of identical SCID.
Particularly; Judge module 230 judges whether to use the interference eliminated of identical SCID to comprise: the Rank information of obtaining when decoding module 220 is greater than 1; And when the port number that network equipment is distributed to self was counted less than Rank, judge module 230 was judged to have and is used other UE of identical SCID to exist; UE carries out interference eliminated according to other users that use identical SCID.
For example; Corresponding to the status number in the table 71 to status number 4; After UE obtains said DMRS port, SCID information and Rank information, can judge the Rank information of obtaining greater than 1, and the port number that network equipment is distributed to self is less than the Rank number; Therefore, UE judges to have other UE existence of using identical SCID.
Thereafter, UE carries out interference eliminated according to other users that use identical SCID, can utilize urgent zero (ZF), least mean-square error detection algorithms such as (MMSE) that interference is suppressed like this, helps improving the receptivity of UE.
In concrete network, network equipment includes but not limited to base station or via node, for example, if other network equipment can be realized functions such as resource allocation, data transmit-receive, also is equivalent to above-mentioned network equipment.
The state of the such scheme that the present invention proposes, the control bit through new introducing NDI bit during with transmission block switch and single codeword transmission carries out combined coding, with the reduction signaling consumption.In addition, network equipment is notified the SCID of user DMRS port assignment and DMRS through DCI, makes that the user can determine whether to have the interference user that uses identical SCID with it, and interference is effectively suppressed.The such scheme that the present invention proposes, very little to the change of existing system, can not influence the compatibility of system, and realize simple, efficient.
One of ordinary skill in the art will appreciate that and realize that all or part of step that the foregoing description method is carried is to instruct relevant hardware to accomplish through program; Described program can be stored in a kind of computer-readable recording medium; This program comprises one of step or its combination of method embodiment when carrying out.
In addition, each functional unit in each embodiment of the present invention can be integrated in the processing module, also can be that the independent physics in each unit exists, and also can be integrated in the module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If said integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in the computer read/write memory medium.
The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (24)
1. the method for an information indication is characterized in that, may further comprise the steps:
Network equipment and user equipment (UE) communicate, and are that said UE distributes corresponding data flow according to the attribute of said UE;
Said network equipment sends Downlink Control Information DCI to said UE, and said DCI comprises the information indication of DMRS port/SCID associating or DMRS port/SCID/Rank associating;
Said network equipment sends to said UE through said DMRS port with corresponding data flow.
2. the method for information indication as claimed in claim 1; It is characterized in that; Said network equipment carries out combined coding with said information indication with the NDI control information, is used to indicate DMRS port and SCID information, perhaps is used to indicate DMRS port, SCID information and Rank information.
3. the method for information indication as claimed in claim 2 is characterized in that said NDI control information comprises following state:
During the single codeword transmission, be closed the corresponding NDI=0 of code word;
During the single codeword transmission, be closed the corresponding NDI=1 of code word;
During the transmission of dicode word, NDI=0 or 1.
4. the method for information indication as claimed in claim 3 is characterized in that, when the state that said information indication need comprise is M, representes that the bit number n of said information indication meets the following conditions:
3×2
n≥M。
5. the method for information indication as claimed in claim 1 is characterized in that said network equipment comprises base station or via node.
6. the method for an information indication is characterized in that, may further comprise the steps:
User equipment (UE) and network equipment communicate, and said network equipment is that said UE distributes corresponding data flow according to the attribute of said UE;
Said UE receives the Downlink Control Information DCI that said network equipment sends, and said DCI comprises the information indication of DMRS port/SCID associating or DMRS port/SCID/Rank associating;
Said UE receives the corresponding data flow that said network equipment sends through said DMRS port.
7. the method for information indication as claimed in claim 6; It is characterized in that; Said UE carries out joint decoding according to said information indication with the NDI control information, is used to indicate DMRS port and SCID information, perhaps is used to indicate DMRS port, SCID information and Rank information.
8. the method for information indication as claimed in claim 7 is characterized in that said NDI control information comprises following state:
During the single codeword transmission, be closed the corresponding NDI=0 of code word;
During the single codeword transmission, be closed the corresponding NDI=1 of code word;
During the transmission of dicode word, NDI=0 or 1.
9. the method for information indication as claimed in claim 8 is characterized in that, when the state that said information indication need comprise is M, representes that the bit number n of said information indication meets the following conditions:
3×2
n≥M。
10. the method for information indication as claimed in claim 7 is characterized in that said UE obtains after said DMRS port, SCID information and the Rank information, judges whether to use the interference eliminated of identical SCID.
11. the method for information indication as claimed in claim 10 is characterized in that, judges whether to use the interference eliminated of identical SCID to comprise:
The Rank information of obtaining as said UE is greater than 1, and the said network equipment port number of distributing to self is when counting less than Rank, and said UE judges to have and uses other UE of identical SCID to exist;
Said UE carries out interference eliminated according to other users that use identical SCID.
12. the method for information indication as claimed in claim 6 is characterized in that said network equipment comprises base station or via node.
13. a network equipment is characterized in that, comprises transceiver module and coding module,
Said coding module is used for encoding send Downlink Control Information DCI to user equipment (UE), and said DCI comprises the information indication of DMRS port/SCID associating or DMRS port/SCID/Rank associating;
Said transceiver module is used for communicating with said UE, is that said UE distributes corresponding data flow according to the attribute of said UE, and through said DMRS port corresponding data flow is sent to said UE.
14. network equipment as claimed in claim 13; It is characterized in that; Said coding module carries out combined coding with said information indication with the NDI control information, is used to indicate DMRS port and SCID information, perhaps is used to indicate DMRS port, SCID information and Rank information.
15. network equipment as claimed in claim 14 is characterized in that, said NDI control information comprises following state:
During the single codeword transmission, be closed the corresponding NDI=0 of code word;
During the single codeword transmission, be closed the corresponding NDI=1 of code word;
During the transmission of dicode word, NDI=0 or 1.
16. network equipment as claimed in claim 15 is characterized in that, when the state that said information indication need comprise is M, representes that the bit number n of said information indication meets the following conditions: 3 * 2
n>=M.
17. network equipment as claimed in claim 13 is characterized in that, said network equipment comprises base station or via node.
18. a user equipment (UE) is characterized in that, comprises transceiver module and decoding module,
Said decoding module is used for the Downlink Control Information DCI according to the network equipment transmission, and decoding obtaining the information indication of DMRS port/SCID associating or DMRS port/SCID/Rank associating;
Said transceiver module is used for communicating with network equipment, and said network equipment is that said UE distributes corresponding data flow according to the attribute of said UE, and receives the corresponding data flow that said network equipment sends through said DMRS port.
19. user equipment (UE) as claimed in claim 18; It is characterized in that; Said decoding module carries out joint decoding according to said information indication with the NDI control information, is used to indicate DMRS port and SCID information, perhaps is used to indicate DMRS port, SCID information and Rank information.
20. user equipment (UE) as claimed in claim 19 is characterized in that, said NDI control information comprises following state:
During the single codeword transmission, be closed the corresponding NDI=0 of code word;
During the single codeword transmission, be closed the corresponding NDI=1 of code word;
During the transmission of dicode word, NDI=0 or 1.
21. user equipment (UE) as claimed in claim 20 is characterized in that, when the state that said information indication need comprise is M, representes that the bit number n of said information indication meets the following conditions:
3×2
n≥M。
22. user equipment (UE) as claimed in claim 18 is characterized in that, also comprises judge module,
Said UE obtains after said DMRS port, SCID information and the Rank information, and said judge module judges whether to use the interference eliminated of identical SCID.
23. user equipment (UE) as claimed in claim 22 is characterized in that, said judge module judges whether to use the interference eliminated of identical SCID to comprise:
The Rank information of obtaining when said decoding module is greater than 1, and the said network equipment port number of distributing to self is when counting less than Rank, and said judge module is judged to have and used other UE of identical SCID to exist;
Said UE carries out interference eliminated according to other users that use identical SCID.
24. user equipment (UE) as claimed in claim 18 is characterized in that, said network equipment comprises base station or via node.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010511614.8A CN102447524B (en) | 2010-10-11 | 2010-10-11 | Information indication method and equipment |
| PCT/CN2011/080625 WO2012048629A1 (en) | 2010-10-11 | 2011-10-11 | Method and device for indicating information |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010511614.8A CN102447524B (en) | 2010-10-11 | 2010-10-11 | Information indication method and equipment |
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| Publication Number | Publication Date |
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| CN102447524A true CN102447524A (en) | 2012-05-09 |
| CN102447524B CN102447524B (en) | 2015-04-15 |
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|---|---|---|---|
| CN201010511614.8A Active CN102447524B (en) | 2010-10-11 | 2010-10-11 | Information indication method and equipment |
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| WO (1) | WO2012048629A1 (en) |
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