CN102447524B - Information indication method and equipment - Google Patents
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- CN102447524B CN102447524B CN201010511614.8A CN201010511614A CN102447524B CN 102447524 B CN102447524 B CN 102447524B CN 201010511614 A CN201010511614 A CN 201010511614A CN 102447524 B CN102447524 B CN 102447524B
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Classifications
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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—Signalling for the administration of the divided path, e.g. signalling of configuration information
- 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
-
- 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 signalling, 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, specifically, the present invention relates to the method and apparatus of information instruction.
Background technology
Mobile and broadband becomes the developing direction of modern communication technology, 3GPP (3rd GenerationPartnership Project, third generation partner program) be 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, low delay with optimize the evolution of packet data application direction.
At descending MIMO (Multi-input Multi-output, single user multiple-input, multiple-output) in transmitting procedure, eNB will according to each UE (User Equipment, subscriber equipment) the factor such as channel condition, business characteristic and priority be the parallel data stream that each UE that is scheduled distributes some, each data flow is wherein called one deck.In order to support the space multiplexing technique of maximum 8 layers, LTE-A (LongTerm Evolution Advanced, Long Term Evolution is senior) in by the DMRS (Demodulation Reference Symbol, demodulation reference mark) of definition 8 ports.DMRS have employed the precoding processing identical with data, and UE by the equivalent channel matrix after just can knowing precoding to the measurement of DMRS, and carries out data demodulates.The descending SU-MIMO of LTE-A can support 8 layers at most, but considers the MU-MIMO that only may support at most total Rank=4 from signaling consumption and performance gain angle.The mixing SU/MU transmission mode in Rel-9 will be continued in LTE Rel-10, namely support SU (Single User by a kind of unified transmission mode simultaneously, single user) and MU-MIMO (Multiuser Multi-input Multi-output, multi-user's multiple-input, multiple-output), realize the switching at runtime of SU and MU-MIMO.
In order to realize higher peak rate, the descending SU-MIMO of LTE-A can support at most the parallel transmission of 8 data Layers.In order to support space preconditioning technique flexibly, the transmission means that LTE-A down link will adopt based on demodulation reference mark DMRS.By definition 8 DMRS antenna ports in LTE Rel-10 specification, in downlink transmission process, eNB needs the distribution condition being indicated DMRS port by DCI (DownlinkControl Information, Downlink Control Information).In order to support the receiving algorithms such as MMSE in MU-MIMO, to suppress co-channel interference better, not only need the DMRS antenna port distribution condition indicating each UE self that is scheduled, also need the port of the UE notifying common scheduling with it in Downlink Control Information to take situation.In addition, the SCID (Scrambling initialization ID, scrambler initialization ID) to DMRS uses in descending control signaling, is also needed to indicate, so that user can normal receive data.
DMRS pattern when having determined Rank1-4 is at present given in LTE-A in Fig. 1.The DMRS pattern of Rank5-8 at present just under discussion, but can be determined in the DMRS pattern of Rank5-8 substantially, and the mode by CDM-FDM is carried out multiplexing by each DMRS antenna port.The DMRS pattern example of Rank5-8 is given in Fig. 2.
In downlink transmission process, eNB needs the DMRS port distribution condition being indicated the UE that is scheduled by Downlink Control Information, consider from the angle of signaling consumption, do not need to support port indicating mode completely flexibly, the general several port combination only needed when considering often kind of total Rank.Give in table 1 a kind of when utilizing 3 bit control information and single codeword transmission vacant NDI (New DataIndication, new data indicates) bit jointly indicate the scheme of DMRS distribution condition, wherein TB is transmission block Transport Block.
The instruction of table 1.DMRS port 3 bit
Such scheme introduces the instruction of 3 overhead bits for the DMRS port distribution condition of UE self, and this scheme make use of NDI bit vacant when single codeword is transmitted to reduce expense.But such scheme does not support the joint instructions of DMRS port and SCID, therefore also need 1 bit separately for SCID instruction, the indication information in this case for port+SCID will reach 4 bits, and the utilance of obvious information bit is lower.
In addition, in such scheme, UE cannot know the interfering data whether existing and be configured with identical SCID, the detection algorithms such as ZF, MMSE therefore also cannot be used to suppress interference, can not make full use of existing resource, optimizes the receptivity of UE.
Therefore, be necessary to propose information indication scheme more efficiently, to solve problems of the prior art.
Summary of the invention
Object of the present invention is intended at least solve one of above-mentioned technological deficiency, particularly distribute the assembled state with SCID by downlink signaling notice DMRS port, when being transmitted by the control bit newly introduced and transmission block switch and single codeword, the state of NDI bit carries out combined coding, to reduce signaling consumption.On the other hand, user can also determine whether there is the interference user using with it identical SCID by receiving control information, effectively suppress interference.
In order to achieve the above object, embodiments of the invention propose the method for a kind of information instruction on the one hand, comprise the following steps:
Network equipment communicates with user equipment (UE), is that described UE distributes corresponding data flow according to the attribute of described UE;
Described network equipment sends Downlink Control Information DCI to described UE, described DCI comprises the information instruction of DMRS port/scrambler initialization ID (SCID) associating or DMRS port/SCID/Rank associating, and described information instruction is carried out combined coding with NDI control information;
Corresponding data flow is given described UE by described DMRS port by described network equipment;
Wherein, carry out combined coding for by information instruction with NDI control information, be used to indicate DMRS port and SCID information, maximum MU-MIMO Rank=4;
Combined coding is carried out with NDI control information for by information instruction, be used to indicate the information instruction of DMRS port/SCID/Rank associating, the NDI bit comprising vacant code word when utilizing code word switch and single codeword transmission carries out combined coding with the control information newly introduced.
Embodiments of the invention also proposed the method for a kind of information instruction on the other hand, comprise the following steps:
User equipment (UE) communicates with network equipment, and described network equipment is that described UE distributes corresponding data flow according to the attribute of described UE;
Described UE receives the Downlink Control Information DCI that described network equipment sends, described DCI comprises the information instruction of DMRS port/scrambler initialization ID (SCID) associating or DMRS port/SCID/Rank associating, and described UE carries out joint decoding according to described information instruction with NDI control information;
Described UE receives the corresponding data flow of described network equipment transmission by described DMRS port;
Wherein, with NDI control information, combined coding is carried out information instruction for network equipment, is used to indicate DMRS port and SCID information, wherein, maximum MU-MIMO Rank=4;
With NDI control information, combined coding is carried out information instruction for network equipment, be used to indicate the information instruction of DMRS port/SCID/Rank associating, the NDI bit comprising vacant code word when utilizing code word switch and single codeword transmission carries out combined coding with the control information newly introduced.
Embodiments of the invention also proposed a kind of network equipment on the other hand, comprise transceiver module and coding module,
Described coding module, encode for Downlink Control Information DCI will be sent to user equipment (UE), described DCI comprises the information instruction of DMRS port/scrambler initialization ID (SCID) associating or DMRS port/SCID/Rank associating, and described information instruction is carried out combined coding with NDI control information;
Described transceiver module, for communicating with described UE, is that described UE distributes corresponding data flow according to the attribute of described UE, and gives described UE by described DMRS port by corresponding data flow;
Wherein, carry out combined coding for by information instruction with NDI control information, be used to indicate DMRS port and SCID information, maximum MU-MIMO Rank=4;
Combined coding is carried out with NDI control information for by information instruction, be used to indicate the information instruction of DMRS port/SCID/Rank associating, the NDI bit comprising vacant code word when utilizing code word switch and single codeword transmission carries out combined coding with the control information newly introduced.
Embodiments of the invention also proposed a kind of user equipment (UE) on the other hand, comprise transceiver module and decoding module,
Described decoding module, for the Downlink Control Information DCI sent according to network equipment, decoding obtains the information instruction of DMRS port/scrambler initialization ID (SCID) associating or DMRS port/SCID/Rank associating, carries out joint decoding according to described information instruction with NDI control information;
Described transceiver module, for communicating with network equipment, described network equipment is that described UE distributes corresponding data flow according to the attribute of described UE, and receives the corresponding data flow of described network equipment transmission by described DMRS port;
Wherein, with NDI control information, combined coding is carried out information instruction for network equipment, is used to indicate DMRS port and SCID information, wherein, maximum MU-MIMO Rank=4;
With NDI control information, combined coding is carried out information instruction for network equipment, be used to indicate the information instruction of DMRS port/SCID/Rank associating, the NDI bit comprising vacant code word when utilizing code word switch and single codeword transmission carries out combined coding with the control information newly introduced.
The such scheme that the present invention proposes, when being transmitted by the control bit newly introduced and transmission block switch and single codeword, the state of NDI bit carries out combined coding, to reduce signaling consumption.In addition, network equipment notifies the SCID of the distribution of user's DMRS port and DMRS by DCI, makes user can determine whether there is the interference user using with it identical SCID, effectively suppresses interference.The such scheme that the present invention proposes, very little to the change of existing system, can not the compatibility of influential system, and realize simple, efficient.
The aspect that the present invention adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
DMRS pattern schematic diagram when Fig. 1 is Rank1-4;
DMRS pattern schematic diagram when Fig. 2 is Rank5-8;
Fig. 3 is the flow chart of the method for a kind of information instruction of the embodiment of the present invention;
Fig. 4 is the flow chart of the method for a kind of information instruction of another embodiment of the present invention;
Fig. 5 is the structural representation of embodiment of the present invention information indicating equipment.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
For existing scheme Problems existing, first the present invention proposes one can realize antenna port and SCID joint instructions method.In order to joint instructions DMRS port and SCID, need to consider its combinations of states.Consider from the angle of paring down expenses, port assignment mode completely flexibly should be avoided.
For the ease of understanding the present invention, launch explanation below in conjunction with the concrete condition in existing protocol.
Such as, only consider when Rank1 transmits to distribute when port 7 or 8, Rank2 transmits and only consider that { combination of 7,8}, Rank3 and above adopt mode one to one to port.The assembled scheme of port assignment and Rank is given in 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} |
In LTE-A, total number of plies of MU-MIMO can reach 4 layers, and wherein each UE uses at most two-layer, therefore only transmits relevant with Rank1-2 for the value of each UE SCID.According to above-mentioned restriction, the combination of port assignment and SCID can be further refined as table 3.
The assembled state of table 3.DMRS port assignment and SCID
Consider that Rank is greater than the scene of 1 single codeword re-transmission, the indication information to single codeword multilayer transmission in the design of combined coding, must be comprised.Therefore, the combinations of states of instruction is needed can be represented by table 4.
The DMRS port that table 4. comprises single codeword re-transmission distributes the assembled state with SCID
As can be seen from previous analysis, if indicated separately the instruction of DMRS port distribution condition and the instruction of SCID distribution condition, usually need more bit number.
The scheme that the present invention proposes is based on following principle:
After defining the combination of DMRS port distribution and SCID, need to represent above-mentioned combinations of states by specific control information.The present invention introduces DMRS port/SCID indication information territory in descending DCI, or DMRS port/SCID/Rank indication information territory, suppose that DMRS port is distributed and altogether comprise M kind state with the combination of SCID or the combination of DMRS port/SCID/Rank, and not adopting any compression coding mode, then indication information is
bit.In order to reduce signaling consumption, can by carrying out combined coding with other information in DCI.Such as, when the Rank of certain UE is more than or equal to 2, the transmission of data generally adopts two code words.If certain transmission block makes a mistake, needs retransmit, and another transmission block does not have transfer of data, then need to adopt single codeword transmission.The switch of transmission block is by the modulation coding mode (MCS) in DCI and the instruction of redundancy versions (RV) information consolidation.During single codeword transmission simultaneously, NDI bit corresponding with being closed code word in DCI is just out vacant.In order to reduce the expense of control signal, when code word switch and single codeword can be utilized to transmit, the NDI bit of vacant code word carries out combined coding with the control information newly introduced.
In order to realize the object of the present invention, the invention discloses the method for a kind of information instruction, comprising the following steps: network equipment communicates with user equipment (UE), is that described UE distributes corresponding data flow according to the attribute of described UE; Described network equipment sends Downlink Control Information DCI to described UE, and described DCI comprises the information instruction of DMRS port/SCID associating or DMRS port/SCID/Rank associating; Corresponding data flow is given described UE by described DMRS port by described network equipment.
As shown in Figure 3, be the flow chart of the method for a kind of information instruction of the embodiment of the present invention, comprise the following steps:
S301: network equipment communicates with user equipment (UE).
In step S301, network equipment communicates with user equipment (UE), is that UE distributes corresponding data flow according to the attribute of UE.
Specifically, in downlink MIMO transmissions process, the factors such as the channel condition according to each UE, business characteristic and priority are the parallel data stream that each UE that is scheduled distributes some by eNB, and each data flow is wherein called one deck.
S302: network equipment sends Downlink Control Information DCI to UE, wherein DCI comprises the information instruction of DMRS port/SCID associating or DMRS port/SCID/Rank associating.
In step s 302, network equipment sends Downlink Control Information DCI to described UE, and described DCI comprises the information instruction of DMRS port/SCID associating or DMRS port/SCID/Rank associating.
Specifically, described information instruction is carried out combined coding with NDI control information by network equipment, is used to indicate DMRS port and SCID information, or is used to indicate DMRS port, SCID information and Rank information.
Wherein, NDI control information comprises following state:
During single codeword transmission, be closed the NDI=0 that code word is corresponding;
During single codeword transmission, be closed the NDI=1 that code word is corresponding;
During two codeword transmission, NDI=0 or 1.
Therefore, when the state that information instruction needs comprise is M, represent that the bit number n that described information indicates meets the following conditions: 3 × 2
n>=M.
In conjunction with concrete condition, be exemplified below, carry out combined coding, be used to indicate DMRS port and SCID information for by information instruction with NDI control information, the joint instructions obtained correspondence table is as follows:
Table 5.DMRS/SCID joint instructions
In this object lesson, give in table 5 and carry out according to such scheme the example that combined coding instruction DMRS port is distributed and SCID combines, wherein, maximum MU-MIMO Rank=4, obviously, needs the overhead of introducing 3 bit altogether.For existing scheme, control overhead is identical, but amount of information provided by the invention more horn of plenty.
Carry out combined coding for by information instruction with NDI control information, be used to indicate the information instruction of DMRS port/SCID/Rank associating, be exemplified below:
In nontransparent MU-MIMO, need the relevant information of instruction pairing UE in control signal.Transparent MU-MIMO, refers to UE and does not know whether other UE comprising and use identical physical resources block PRB with this UE.Nontransparent MU-MIMO and UE can know whether other UE comprising and use identical physical resources block PRB with this UE.Therefore the combinations of states indicated by the present embodiment also comprises the total Rank information used with this UE in the DMRS group of identical SCID, as shown in table 6.
The combinations of states of the nontransparent MU-MIMO of table 6.
After defining the combination of DMRS port distribution and SCID, need to represent above-mentioned combinations of states by specific control information.In order to reduce the expense of control signal, when code word switch and single codeword can be utilized to transmit, the NDI bit of vacant code word carries out combined coding with the control information newly introduced.The combination of actual code word switch and NDI comprises three kinds of states:
During single codeword transmission, be closed the NDI=0 that code word is corresponding;
During single codeword transmission, be closed the NDI=1 that code word is corresponding;
During two codeword transmission, NDI=0 or 1.
Introduce n-bit if new and be used for united information instruction, then require 3 × 2 in combined coding
n>=M.
Table 7.DMRS/SCID/Rank joint instructions
Give in table 7 and carry out according to such scheme the example that combined coding instruction DMRS port is distributed and in SCID and DMRS group, total Rank combines.In order to support the downlink transfer of maximum 8 layers, need the overhead of introducing 3 bit altogether.For existing scheme, control overhead is identical, but the amount of information more horn of plenty that the present embodiment provides.
S303: network equipment sends data by DMRS port to UE.
In step S303, corresponding data flow is given described UE by the described DMRS port determined in step s 302 by network equipment.
In the above-described embodiments, network equipment includes but not limited to base station or via node, such as, if other network equipment can realize the function such as Resourse Distribute, data transmit-receive, is also equivalent to above-mentioned network equipment.
As shown in Figure 4, be the flow chart of the method for a kind of information instruction of another embodiment of the present invention, comprise the following steps:
S401: user equipment (UE) communicates with network equipment.
In step S401, user equipment (UE) communicates with network equipment, and network equipment is that UE distributes corresponding data flow according to the attribute of UE.
Specifically, in downlink MIMO transmissions process, the factors such as the channel condition according to each UE, business characteristic and priority are the parallel data stream that each UE that is scheduled distributes some by eNB, and each data flow is wherein called one deck.
S402:UE receives network equipment and sends Downlink Control Information DCI, and wherein DCI comprises the information instruction 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 instruction of DMRS port/SCID associating or DMRS port/SCID/Rank associating.
Specifically, UE carries out joint decoding according to described information instruction with NDI control information, is used to indicate DMRS port and SCID information, or is used to indicate DMRS port, SCID information and Rank information.
Wherein, NDI control information comprises following state:
During single codeword transmission, be closed the NDI=0 that code word is corresponding;
During single codeword transmission, be closed the NDI=1 that code word is corresponding;
During two codeword transmission, NDI=0 or 1.
Therefore, when the state that information instruction needs comprise is M, represent that the bit number n that described information indicates meets the following conditions: 3 × 2
n>=M.
In addition, after UE obtains described DMRS port, SCID information and Rank information, can also judge whether that the interference carrying out using identical SCID is eliminated.
Specifically, judge whether that carrying out using the interference of identical SCID to eliminate comprises:
The Rank information obtained as UE is greater than 1, and when the port number that network equipment distributes to self is less than Rank number, and described UE judges to have and uses other UE of identical SCID to exist;
Thereafter, UE eliminates according to using other users of identical SCID to carry out interference.
Below in conjunction with concrete example, expansion explanation is carried out to such scheme.
Carry out combined coding for by information instruction with NDI control information, be used to indicate DMRS port and SCID information, the joint instructions obtained correspondence table is as shown in table 5.In this object lesson, give in table 5 and carry out according to such scheme the example that combined coding instruction DMRS port is distributed and SCID combines, wherein, maximum MU-MIMO Rank=4, obviously, needs the overhead of introducing 3 bit altogether.For existing scheme, control overhead is identical, but amount of information provided by the invention more horn of plenty.
Carry out combined coding for by information instruction with NDI control information, be used to indicate the information instruction of DMRS port/SCID/Rank associating, the joint instructions obtained correspondence table is as shown in table 7.Give in table 7 and carry out according to such scheme the example that combined coding instruction DMRS port is distributed and in SCID and DMRS group, total Rank combines.In order to support the downlink transfer of maximum 8 layers, need the overhead of introducing 3 bit altogether.For existing scheme, control overhead is identical, but the amount of information more horn of plenty that the present embodiment provides.
S403:UE receives the data of network equipment transmission by DMRS port.
In step S403, UE receives the corresponding data flow of network equipment transmission by the described DMRS port determined in step S402.
In addition, corresponding to status number 1 to the status number 4 in table 7, after UE obtains described DMRS port, SCID information and Rank information, can judge that the Rank information obtained is greater than 1, and the port number that network equipment distributes to self is less than Rank number, therefore, UE judges that other UE with the identical SCID of use exist.
Thereafter, UE eliminates according to using other users of identical SCID to carry out interference, the detection algorithm such as ZF (ZF), least mean-square error (MMSE) can be utilized like this to suppress interference, be conducive to the receptivity improving UE.
In the above-described embodiments, network equipment includes but not limited to base station or via node, such as, if other network equipment can realize the function such as Resourse Distribute, data transmit-receive, is also equivalent to above-mentioned network equipment.Corresponding and said method, as shown in Figure 5, the embodiment of the present invention also proposed a kind of network equipment 100 and subscriber equipment 200.
Wherein, network equipment 100, comprises transceiver module 110 and coding module 120.
Coding module 120, encodes for sending Downlink Control Information DCI to user equipment (UE), and DCI comprises the information instruction of DMRS port/SCID associating or DMRS port/SCID/Rank associating;
Transceiver module 110, for communicating with UE, is that UE distributes corresponding data flow according to the attribute of UE, and by DMRS port by corresponding data flow to UE.
Specifically, information instruction is carried out combined coding with NDI control information by coding module 120, is used to indicate DMRS port and SCID information, or is used to indicate DMRS port, SCID information and Rank information.
Wherein, NDI control information comprises following state:
During single codeword transmission, be closed the NDI=0 that code word is corresponding;
During single codeword transmission, be closed the NDI=1 that code word is corresponding;
During two codeword transmission, NDI=0 or 1.
Therefore, when the state that information instruction needs comprise is M, the bit number n of expression information instruction meets the following conditions: 3 × 2
n>=M.
Carry out combined coding for by information instruction with NDI control information, be used to indicate DMRS port and SCID information, the joint instructions obtained correspondence table is as shown in table 5.In this object lesson, give in table 5 and carry out according to such scheme the example that combined coding instruction DMRS port is distributed and SCID combines, wherein, maximum MU-MIMO Rank=4, obviously, needs the overhead of introducing 3 bit altogether.For existing scheme, control overhead is identical, but amount of information provided by the invention more horn of plenty.
Carry out combined coding for by information instruction with NDI control information, be used to indicate the information instruction of DMRS port/SCID/Rank associating, the joint instructions obtained correspondence table is as shown in table 7.Give in table 7 and carry out according to such scheme the example that combined coding instruction DMRS port is distributed and in SCID and DMRS group, total Rank combines.In order to support the downlink transfer of maximum 8 layers, need the overhead of introducing 3 bit altogether.For existing scheme, control overhead is identical, but the amount of information more horn of plenty that the present embodiment provides.
In concrete network, network equipment includes but not limited to base station or via node, such as, if other network equipment can realize the function such as Resourse Distribute, data transmit-receive, is also equivalent to above-mentioned network equipment.
Wherein, user equipment (UE) 200, comprises transceiver module 210 and decoding module 220.
Decoding module 220, for the Downlink Control Information DCI sent according to network equipment, decoding obtains the information instruction of DMRS port/SCID associating or DMRS port/SCID/Rank associating.
Transceiver module 210, for communicating with network equipment, network equipment is that UE distributes corresponding data flow according to the attribute of UE, and receives the corresponding data flow of network equipment transmission by DMRS port.
Specifically, decoding module 220 carries out joint decoding according to information instruction with NDI control information, is used to indicate DMRS port and SCID information, or is used to indicate DMRS port, SCID information and Rank information.
Wherein, NDI control information comprises following state:
During single codeword transmission, be closed the NDI=0 that code word is corresponding;
During single codeword transmission, be closed the NDI=1 that code word is corresponding;
During two codeword transmission, NDI=0 or 1.
Therefore, when the state that information instruction needs comprise is M, the bit number n of expression information instruction meets the following conditions: 3 × 2
n>=M.
Carry out combined coding for by information instruction with NDI control information, be used to indicate DMRS port and SCID information, the joint instructions obtained correspondence table is as shown in table 5.In this object lesson, give in table 5 and carry out according to such scheme the example that combined coding instruction DMRS port is distributed and SCID combines, wherein, maximum MU-MIMO Rank=4, obviously, needs the overhead of introducing 3 bit altogether.For existing scheme, control overhead is identical, but amount of information provided by the invention more horn of plenty.
Carry out combined coding for by information instruction with NDI control information, be used to indicate the information instruction of DMRS port/SCID/Rank associating, the joint instructions obtained correspondence table is as shown in table 7.Give in table 7 and carry out according to such scheme the example that combined coding instruction DMRS port is distributed and in SCID and DMRS group, total Rank combines.In order to support the downlink transfer of maximum 8 layers, need the overhead of introducing 3 bit altogether.For existing scheme, control overhead is identical, but the amount of information more horn of plenty that the present embodiment provides.
In addition, user equipment (UE) 200 also comprises judge module 230.
After UE200 obtains DMRS port, SCID information and Rank information, judge module 230 judges whether that the interference carrying out using identical SCID is eliminated.
Specifically, judge module 230 judges whether that carrying out using the interference of identical SCID to eliminate comprises: the Rank information obtained when decoding module 220 is greater than 1, and the port number that network equipment distributes to self is when being less than Rank number, judge module 230 judges to have and uses other UE of identical SCID to exist; UE eliminates according to using other users of identical SCID to carry out interference.
Such as, corresponding to status number 1 to the status number 4 in table 7, after UE obtains described DMRS port, SCID information and Rank information, can judge that the Rank information obtained is greater than 1, and the port number that network equipment distributes to self is less than Rank number, therefore, UE judges that other UE with the identical SCID of use exist.
Thereafter, UE eliminates according to using other users of identical SCID to carry out interference, the detection algorithm such as ZF (ZF), least mean-square error (MMSE) can be utilized like this to suppress interference, be conducive to the receptivity improving UE.
In concrete network, network equipment includes but not limited to base station or via node, such as, if other network equipment can realize the function such as Resourse Distribute, data transmit-receive, is also equivalent to above-mentioned network equipment.
The such scheme that the present invention proposes, when being transmitted by the control bit newly introduced and transmission block switch and single codeword, the state of NDI bit carries out combined coding, to reduce signaling consumption.In addition, network equipment notifies the SCID of the distribution of user's DMRS port and DMRS by DCI, makes user can determine whether there is the interference user using with it identical SCID, effectively suppresses interference.The such scheme that the present invention proposes, very little to the change of existing system, can not the compatibility of influential system, and realize simple, efficient.
One of ordinary skill in the art will appreciate that realizing all or part of step that above-described embodiment method carries is that the hardware that can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, this program perform time, step comprising embodiment of the method one or a combination set of.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, also can be that the independent physics of unit exists, also can be integrated in a module by two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.If described integrated module using the form of software function module realize and as independently production marketing or use time, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium mentioned can be read-only memory, disk or CD etc.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (20)
1. a method for information instruction, is characterized in that, comprise the following steps:
Network equipment communicates with user equipment (UE), is that described UE distributes corresponding data flow according to the attribute of described UE;
Described network equipment sends Downlink Control Information DCI to described UE, described DCI comprises the information instruction of DMRS port/scrambler initialization ID (SCID) associating or DMRS port/SCID/Rank associating, and described information instruction is carried out combined coding with NDI control information;
Corresponding data flow is given described UE by described DMRS port by described network equipment;
Wherein, carry out combined coding for by information instruction with NDI control information, be used to indicate DMRS port and SCID information, maximum MU-MIMO Rank=4;
Combined coding is carried out with NDI control information for by information instruction, be used to indicate the information instruction of DMRS port/SCID/Rank associating, the NDI bit comprising vacant code word when utilizing code word switch and single codeword transmission carries out combined coding with the control information newly introduced.
2. the method for information instruction as claimed in claim 1, it is characterized in that, described NDI control information comprises following state:
During single codeword transmission, be closed the NDI=0 that code word is corresponding;
During single codeword transmission, be closed the NDI=1 that code word is corresponding;
During two codeword transmission, NDI=0 or 1.
3. the method for information instruction as claimed in claim 2, is characterized in that, when the state that described information instruction needs comprise is M, represents that the bit number n that described information indicates meets the following conditions:
3×2
n≥M。
4. the method for information instruction as claimed in claim 1, it is characterized in that, described network equipment comprises base station or via node.
5. a method for information instruction, is characterized in that, comprise the following steps:
User equipment (UE) communicates with network equipment, and described network equipment is that described UE distributes corresponding data flow according to the attribute of described UE;
Described UE receives the Downlink Control Information DCI that described network equipment sends, described DCI comprises the information instruction of DMRS port/scrambler initialization ID (SCID) associating or DMRS port/SCID/Rank associating, and described UE carries out joint decoding according to described information instruction with NDI control information;
Described UE receives the corresponding data flow of described network equipment transmission by described DMRS port;
Wherein, with NDI control information, combined coding is carried out information instruction for network equipment, is used to indicate DMRS port and SCID information, wherein, maximum MU-MIMO Rank=4;
With NDI control information, combined coding is carried out information instruction for network equipment, be used to indicate the information instruction of DMRS port/SCID/Rank associating, the NDI bit comprising vacant code word when utilizing code word switch and single codeword transmission carries out combined coding with the control information newly introduced.
6. the method for information instruction as claimed in claim 5, it is characterized in that, described NDI control information comprises following state:
During single codeword transmission, be closed the NDI=0 that code word is corresponding;
During single codeword transmission, be closed the NDI=1 that code word is corresponding;
During two codeword transmission, NDI=0 or 1.
7. the method for information instruction as claimed in claim 6, is characterized in that, when the state that described information instruction needs comprise is M, represents that the bit number n that described information indicates meets the following conditions:
3×2
n≥M。
8. the method for information instruction as claimed in claim 5, is characterized in that, after described UE obtains described DMRS port, SCID information and Rank information, judges whether that the interference carrying out using identical SCID is eliminated.
9. the method for information instruction as claimed in claim 8, is characterized in that, judges whether that carrying out using the interference of identical SCID to eliminate comprises:
The Rank information obtained as described UE is greater than 1, and when the port number that described network equipment distributes to self is less than Rank number, and described UE judges to have and uses other UE of identical SCID to exist;
Described UE eliminates according to using other users of identical SCID to carry out interference.
10. the method for information instruction as claimed in claim 5, it is characterized in that, described network equipment comprises base station or via node.
11. 1 kinds of network equipments, is characterized in that, comprise transceiver module and coding module,
Described coding module, encode for Downlink Control Information DCI will be sent to user equipment (UE), described DCI comprises the information instruction of DMRS port/scrambler initialization ID (SCID) associating or DMRS port/SCID/Rank associating, and described information instruction is carried out combined coding with NDI control information;
Described transceiver module, for communicating with described UE, is that described UE distributes corresponding data flow according to the attribute of described UE, and gives described UE by described DMRS port by corresponding data flow;
Wherein, carry out combined coding for by information instruction with NDI control information, be used to indicate DMRS port and SCID information, maximum MU-MIMO Rank=4;
Combined coding is carried out with NDI control information for by information instruction, be used to indicate the information instruction of DMRS port/SCID/Rank associating, the NDI bit comprising vacant code word when utilizing code word switch and single codeword transmission carries out combined coding with the control information newly introduced.
12. network equipments as claimed in claim 11, it is characterized in that, described NDI control information comprises following state:
During single codeword transmission, be closed the NDI=0 that code word is corresponding;
During single codeword transmission, be closed the NDI=1 that code word is corresponding;
During two codeword transmission, NDI=0 or 1.
13. network equipments as claimed in claim 12, is characterized in that, when the state that described information instruction needs comprise is M, represent that the bit number n that described information indicates meets the following conditions: 3 × 2
n>=M.
14. network equipments as claimed in claim 11, it is characterized in that, described network equipment comprises base station or via node.
15. 1 kinds of user equipment (UE)s, is characterized in that, comprise transceiver module and decoding module,
Described decoding module, for the Downlink Control Information DCI sent according to network equipment, decoding obtains the information instruction of DMRS port/scrambler initialization ID (SCID) associating or DMRS port/SCID/Rank associating, carries out joint decoding according to described information instruction with NDI control information;
Described transceiver module, for communicating with network equipment, described network equipment is that described UE distributes corresponding data flow according to the attribute of described UE, and receives the corresponding data flow of described network equipment transmission by described DMRS port;
Wherein, with NDI control information, combined coding is carried out information instruction for network equipment, is used to indicate DMRS port and SCID information, wherein, maximum MU-MIMO Rank=4;
With NDI control information, combined coding is carried out information instruction for network equipment, be used to indicate the information instruction of DMRS port/SCID/Rank associating, the NDI bit comprising vacant code word when utilizing code word switch and single codeword transmission carries out combined coding with the control information newly introduced.
16. user equipment (UE)s as claimed in claim 15, it is characterized in that, described NDI control information comprises following state:
During single codeword transmission, be closed the NDI=0 that code word is corresponding;
During single codeword transmission, be closed the NDI=1 that code word is corresponding;
During two codeword transmission, NDI=0 or 1.
17. user equipment (UE)s as claimed in claim 16, is characterized in that, when the state that described information instruction needs comprise is M, represent that the bit number n that described information indicates meets the following conditions:
3×2
n≥M。
18. user equipment (UE)s as claimed in claim 15, is characterized in that, also comprise judge module,
After described UE obtains described DMRS port, SCID information and Rank information, described judge module judges whether that the interference carrying out using identical SCID is eliminated.
19. user equipment (UE)s as claimed in claim 18, is characterized in that, described judge module judges whether that carrying out using the interference of identical SCID to eliminate comprises:
The Rank information obtained when described decoding module is greater than 1, and when the port number that described network equipment distributes to self is less than Rank number, and described judge module judges to have and uses other UE of identical SCID to exist;
Described UE eliminates according to using other users of identical SCID to carry out interference.
20. user equipment (UE)s as claimed in claim 15, it is characterized in that, described network equipment comprises base station or via node.
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| 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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| CN201010511614.8A CN102447524B (en) | 2010-10-11 | 2010-10-11 | Information indication method and equipment |
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