CN102315870A - Downlink control information (DCI) indication method and apparatus thereof - Google Patents
Downlink control information (DCI) indication method and apparatus thereof Download PDFInfo
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Abstract
The invention discloses a downlink control information (DCI) indication method and an apparatus thereof. The method and the apparatus can be used to support multilayer transmission based on a UE specific reference signal (URS). The UE generates DCI. The DCI comprises an indication signaling. The indication signaling is used to indicate antenna port information and combined coding information of a URS correlation parameter. Antenna port information dereferencing comprises one of the following antenna port sets or any arbitrary combination: a port 7 and the port 9; the port 7 and the port 10; the port 8 and the port 9; the port 8 and the port 10; the port 9 and the port 10; the port 7, the port 9 and the port 10; the port 8, the port 9 and the port 10; the port 7, the port 8 and the port 9; the port 7, the port 8 and the port 10. In the invention, the new indication signaling is added in a DCI format and is used to indicate different combined coding parameters when an enabled transmission block quantity is different. Interference between ePDCCH and a cell can be eliminated or can be coordinated.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of Downlink Control Information indicating means and device.
Background technology
In wireless communication technology; Base station side (the Node B of evolution for example; Be eNB) when using many antenna transmission data, can take the mode of spatial reuse to improve message transmission rate, promptly use identical running time-frequency resource to launch different data in the different antennas position at transmitting terminal; Receiving terminal (for example subscriber equipment abbreviates UE as) also uses many antennas to receive data.Under single user's situation, the resource of all antennas is all distributed to same user; This user occupies the physical resource that base station side is distributed alone in a transmission intercal; This transmission means is called single user's multiple-input, multiple-output (Single User Multiple-Input Multiple-Out-put is called for short SU-MIMO); Under multi-user's situation, the space resources of different antennae is distributed to different user; A user and at least one other user physical resource that the sharing base side is distributed in a transmission intercal; Sharing mode can be space division multiple access mode or space division multiplexing mode; This transmission means is called multi-user's multiple-input, multiple-output (Multiple User Multiple-Input Multiple-Out-put is called for short MU-MIMO).Wherein, the physical resource of base station side distribution is meant running time-frequency resource.Transmission system is if support SU-MIMO and the MU-MIMO pattern simultaneously, and then eNB need provide the data under these two kinds of patterns to UE.UE need know that all eNB is for the used order (Rank) of these UE transmission MIMO data when SU-MIMO pattern or MU-MIMO pattern.Under the SU-MIMO pattern, the resource of all antennas is all distributed to same user, and the used number of plies of transmission MIMO data just equals eNB in the used order of transmission MIMO data; Under the MU-MIMO pattern, a corresponding user is transmitted total number of plies that the used number of plies is less than eNB transmission MIMO data.If carry out the switching of SU-MIMO pattern and MU-MIMO, eNB need be in the different transmission mode UE Different control data that send a notice.
Long Term Evolution (Long-Term Evolution; Abbreviate LTE as) version 8 (Release 8) standard in defined following three kinds of downlink physical control channels: physical down control format indicating channel (Physical Control Format Indicator Channel; Abbreviate PCFICH as), the automatic repeat requests indicating channel of physical mixed (Physical Hybrid Automatic Retransmission Request Indicator Channel; Abbreviate PHICH as) and Physical Downlink Control Channel (Physical Downlink Control Channel abbreviates PDCCH as).Wherein PDCCH is used for bearing downlink control information (Downlink Control Information abbreviates DCI as), comprising: uplink and downlink schedule information, and uplink power control information.The form of DCI (DCI format) is divided into following several kinds: DCI format0, DCI format 1, DCI format 1A, DCI format 1B, DCI format 1C, DCI format1D, DCI format 2, DCI format 2A, DCI format 3 and DCI format 3A etc.Wherein support the transmission mode 5 of MU-MIMO to utilize the Downlink Control Information of DCI format 1D; And the descending power territory among the DCIformat 1D (Downlink power offset field) δ power-offset-offset is used in reference to and is shown in that the power for a user reduces by half in the MU-MIMO pattern information of (promptly-10log10 (2)); Because 5 of MU-MIMO transmission modes are supported two users' MU-MIMO transmission; Through this descending power territory; MU-MIMO transmission mode 5 can be supported the dynamic switching of SU-MIMO pattern and MU-MIMO pattern; But no matter a UE is only supported the transmission of a stream at SU-MIMO pattern or this DCI format of MU-MIMO pattern; Though LTE version 8 is supported single user's transmission of maximum two streams in transmission mode 4, because the switching between the transmission mode can only be semi-static, so in LTE version 8, can not accomplish the dynamic switching of single user's multithread transmission and multi-user's transmission.
In the version 9 (Release 9) of LTE; Defeated in order to strengthen descending multi-antenna transmitting; Introduced the transmission mode of dual-stream beamforming (Beamforming); And Downlink Control Information has increased DCI format2B to support this transmission mode, and the sign bit that a scrambler sequence identity (scrambling identity is called for short SCID) is arranged in DCI format 2B is to support two different scrambler sequence; ENB can distribute to different user with these two scrambler sequence, a plurality of users of same resource multiplex.In addition, when having only a transmission block to enable, the antenna port when new data indication (NDI) bit that the transmission block of disable (Disabled) is corresponding also is used for indicating the individual layer transmission.
In addition; In the version 10 (Release 10) of LTE; The transmission mode of MIMO has confirmed that use UE takies reference signal (UE specific Reference Signal; Abbreviate URS as) separate the pilot tone of calling, UE need obtain the position of pilot tone, just can on pilot tone, do the estimation of channel and interference.Total number of plies of different transmission has different pilot frequency design (URS Pattern); Three kinds of different patterns are for example tentatively arranged in the version 10 of LTE surely; Total number of plies or the order of transmission is 1 or 2 o'clock; With first pattern (URS pattern 1), total number of plies of transmission or order be 3 or 4 o'clock with second pattern (URSpattern 2), total number of plies of transmission or order be 5 in 8 during arbitrary value with the 3rd pattern (URS pattern3).In the SU-MIMO pattern, the data of all transport layers all send to same UE, so just can know that pilot frequency design also can know the position of pilot tone as long as UE obtains order.In the MU-MIMO pattern, UE need know that sum of ranks begins the number of plies that this UE is transmitted, and UE need know that also the pilot frequency design of transmission usefulness just can obtain the pilot frequency locations of interference.In addition, different UE DRS (Dedicated Reference Signal)s uses different spreading codes, and UE need know that also the spreading code of transmission usefulness just can obtain the information on the pilot tone.In the technology of existing LTE version number 8, do not support the demand; In the LTE version 10; The transmission mode of definite MIMO need support that maximum total number of plies is single user's transmission of 8; And in the single user of same transmission mode support and multi-user's transmission, so need to use the MIMO multi-user transmission of new signaling support in the LTE version 10 based on URS.
In the version 10 (Release 10) of LTE, the UE-specific reference signal is used at antenna port p=5, p=7, and p=8, or p=7,8 ... to the support of PDSCH transmission, wherein υ representes that PDSCH transmits employed number of layers on υ+6.When the port of only in the transmission of PDSCH and agreement, describing was relevant, the UE-specific reference signal just can exist and as the needed useful signal of PDSCH demodulation.The UE-specific reference signal only goes up transmission at the Resource Block that has shone upon corresponding PDSCH (RBs).
In the version 10 (Release 10) of LTE; Defeated in order further to strengthen descending multi-antenna transmitting; Introduce transmission mode 9, on the basis of transmission mode 9 double-current beamforming (pattern 8) in compatible LTE version 9, further be strengthened to the maximum wave beam forming of supporting 8 layer transmission; And Downlink Control Information has increased DCI format 2C to support this transmission mode; In DCI format 2C, SCID, number of layers and the antenna port mode through combined coding is designed the control signaling, and reused the SCID bit that is used to indicate the scrambler sequence identity in the pattern 8.Equally, when having only a transmission block to enable, the antenna port when new data indication (NDI) bit that the transmission block of disable (Disabled) is corresponding also is used for indicating the individual layer transmission.In the version 10; Pass through quadrature mask (Orthogonal Cover Code between each port; Abbreviate OCC as) the realization quadrature; The distribution of the OCC sign indicating number of different port (port 7～14) can be unified as shown in table 1, and the last scrambler sequence of using of different orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing abbreviates OFDM as) symbol l ' of wherein carrying demodulated reference signal is according to formula w
p(l ') decision,
Wherein, m '=0,1,2, respectively corresponding each physics time is relative position to high demodulation pilot frequency Zi low, n
PRBCorresponding to the physics time index that is used for Physical Downlink Shared Channel (Physical Downlink Share Channel abbreviates PDSCH as) transmission.
Table 1 antenna port and corresponding scrambler sequence table
In LTE version 11; Need to support the transmission of enhanced physical down control channel PDCCH (ePDCCH); Need to send the transmission that specific UE DRS (Dedicated Reference Signal) (UE specific reference signal) is supported ePDCCH, this moment, the demodulated reference signal of ePDCCH need take some antenna port such as port 7.In addition, in LTE version 11, need to support multipoint cooperative transmission (COMP) or spaced antenna (DAS), the demodulated reference signal of neighbor cell need take the certain port such as the port 8 of this sub-district.Therefore, the descending control signaling of LTE version 10 can not be realized when certain port is taken by ePDCCH or taken by neighbor cell the parameter deixis to the demodulated reference signal UE DRS (Dedicated Reference Signal) (UE specific reference signal) of this cell downlink transfer of data.
Summary of the invention
The technical problem that the present invention solves provides a kind of Downlink Control Information indicating means and device, to support the multilayer transmission based on the UE DRS (Dedicated Reference Signal).
For solving the problems of the technologies described above, the invention provides a kind of Downlink Control Information indicating means,
The base station is that subscriber equipment (UE) generates Downlink Control Information, and said Downlink Control Information comprises indication signaling, and said indication signaling is used to indicate the combined coding information of antenna port information and UE DRS (Dedicated Reference Signal) relevant parameter;
Wherein, said antenna port information value comprises one of following antenna port set or its combination in any:
Port 7 and 9; Port 7 and 10; Port 8 and 9; Port 8 and 10; Port 9 and 10; Port 7,9 and 10; Port 8,9 and 10; Port 7,8 and 9; Port 7,8 and 10.
Further, said indication signaling has a plurality of state values, an antenna port set of a unique indication of state value and one group of UE DRS (Dedicated Reference Signal) related parameter values.
Further, the combined coding of said antenna port information and UE DRS (Dedicated Reference Signal) relevant parameter is indicated through the indication signaling in the descending control format in said base station.
Further, said UE DRS (Dedicated Reference Signal) relevant parameter comprises one of following parameter or its combination in any: the number of plies of transmission, scrambler sequence identity, spreading code information, reference signal information.
Further, said spreading code information comprises one of following information at least: spread spectrum code length, concrete spreading code.
Further, said reference signal information comprises reference signal pattern or reference signal expense.
Further, said base station sends to said UE through the said Downlink Control Information that downlink physical control channel or the downlink physical control channel that strengthens will generate.
The present invention also provides a kind of Downlink Control Information indicating device, is applied to support the base station of descending multilayer (MIMO) transmission, and said device comprises the control information generation module, physical downlink channel control signal generation module and sending module, wherein:
Said control information generation module is used for, and for UE generates Downlink Control Information, in the Downlink Control Information that generates, comprises indication signaling, and said indication signaling is used to indicate the combined coding information of antenna port information and UE DRS (Dedicated Reference Signal) relevant parameter; Wherein said antenna port information value comprises one of following antenna port set or its combination in any: port 7 and 9; Port 7 and 10; Port 8 and 9; Port 8 and 10; Port 9 and 10; Port 7,9 and 10; Port 8,9 and 10; Port 7,8 and 9; Port 7,8 and 10;
Said physical downlink channel control signal generation module is used for, and Downlink Control Information is handled, and obtains physical downlink channel control signal;
Said sending module is used for, and physical downlink channel control signal is sent to UE.
Further, said control information generation module is through a plurality of state values of said indication signaling, and said indication signaling has a plurality of state values, an antenna port set of a unique indication of state value and one group of UE DRS (Dedicated Reference Signal) related parameter values.
Further, said control information generation module is used for, and through the indication signaling in the descending control format, indicates the combined coding of said antenna port information and UE DRS (Dedicated Reference Signal) relevant parameter.
Further, the said UE DRS (Dedicated Reference Signal) relevant parameter of said control information generation module indication comprises one of following parameter or its combination in any: the number of plies of transmission, scrambler sequence identity, spreading code information, reference signal information;
Wherein, said spreading code information comprises one of following information at least: spread spectrum code length, concrete spreading code;
Said reference signal information comprises reference signal pattern or reference signal expense.
Further, said sending module is used for, and the downlink physical control channel that perhaps strengthens through downlink physical control channel sends to said UE with said physical downlink channel control signal.
In sum; The present invention proposes a kind of indicating means and device of descending control signaling; Through in descending control information format, increasing by a new indication signaling; Be used for not indicating different combined coding parameters simultaneously, realize supporting to strengthen the interference eliminated or the interference coordination of down control channel ePDCCH and minizone in the quantity of the transmission block that enables; In addition, the present invention also provides a kind of Downlink Control Information of low expense, supports simultaneously that in same signaling maximum total number of plies is 8 single user's transmission and multi-user's transmission.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the sketch map of indicating means of the Downlink Control Information of the embodiment of the invention.
Fig. 2 is the sketch map of indicating device of the Downlink Control Information of the embodiment of the invention.
Embodiment
To the problem of in the version 11 of LTE, not supporting to strengthen down control channel transmission and inter-cell interference cancellation in the prior art, this execution mode provides a kind of indicating means of Downlink Control Information, comprising:
The base station comprises an indication signaling at least in the descending control information format of the Downlink Control Information that sends to UE, be used to indicate sets of ports to close and UE DRS (Dedicated Reference Signal) relevant parameter.
Wherein, said antenna port information specifically comprises continuous or discrete antenna port set; And the set of said antenna port is the subclass of the antenna port the antenna port that removes enhancing Physical Downlink Control Channel (ePDCCH) or neighbor cell and take.
Wherein, described sets of ports conjunction value comprises one of following port set or its combination in any at least: port 7 and 9; Port 7 and 10; Port 8 and 9; Port 8 and 10; Port 9 and 10; Port 7,9 and 10; Port 8,9 and 10; Port 7,8 and 9; Port 7,8 and 10.
Wherein, said indication signaling has a plurality of state values, and said indication signaling has a plurality of state values, an antenna port set of a unique indication of state value and one group of UE DRS (Dedicated Reference Signal) related parameter values.
The base station sends to terminal UE through the downlink physical control channel of downlink physical control channel or enhancing with said Downlink Control Information.
Further, the parameter that described UE DRS (Dedicated Reference Signal) is relevant comprises one of following parameter or its combination at least: the number of plies of transmission, scrambler sequence identity, spreading code information, reference signal information.
More specifically, the relevant parameter of described other UE DRS (Dedicated Reference Signal) is the number of plies of transmission.
More specifically, the relevant parameter of described other UE DRS (Dedicated Reference Signal) is the number of plies, the scrambler sequence identity of transmission.
More specifically, the relevant parameter of described other UE DRS (Dedicated Reference Signal) is the number of plies, scrambler sequence identity and the spreading code information of transmission.
More specifically, the relevant parameter of described other UE DRS (Dedicated Reference Signal) is the number of plies, scrambler sequence identity and the reference signal information of transmission.
More specifically, spreading code information comprises one of following information at least: spread spectrum code length, concrete spreading code.
More specifically, reference signal information is meant reference signal pattern or reference signal expense.
In order to solve the problems of the technologies described above, this execution mode also provides a kind of indicating device of Downlink Control Information, is applied to base station system, and this device comprises: control information generation module, physical downlink channel control signal generation module and sending module.
Particularly, the control information generation module is used to produce Downlink Control Information, comprises an indication signaling at least, is used to indicate sets of ports to close the combined coding with UE DRS (Dedicated Reference Signal) relevant parameter.
The physical downlink channel control signal generation module is used for Downlink Control Information handled obtaining physical downlink channel control signal.Sending module is used for the signal of down control channel is sent to terminal UE.
According to above description, the present invention is through the new indication signaling of definition, and the different combined coding parameter of indication when multi-user's multiple-input, multiple-output (MIMO) transfer of data is supported the MIMO multi-user's transmission based on demodulation pilot frequency.
For making the object of the invention, technical scheme and advantage clearer, hereinafter will combine accompanying drawing that embodiments of the invention are elaborated.Need to prove that under the situation of not conflicting, embodiment among the application and the characteristic among the embodiment be combination in any each other.
Embodiment one
Fig. 1 is the flow chart according to the processing method of the parameter of the descending control signaling of the embodiment of the invention.As shown in Figure 1, comprise according to the transmission parameter indicating means of the embodiment of the invention:
Step S102, base station eNodeB produces Downlink Control Information, comprises that at least an indication signaling is used to indicate sets of ports to close the combined coding of the parameter relevant with other UE DRS (Dedicated Reference Signal).
Step S104, base station eNodeB sends to terminal UE through the downlink physical control channel of downlink physical control channel or enhancing with described Downlink Control Information.
The above-mentioned parameter indicating means when indication user device transmissions parameter, can carry out combined coding with parameters such as the number of plies of transmitting, scrambler sequence identity, antenna port set and generate the parameter indication signaling, sends to subscriber equipment through Downlink Control Information then.Because said method has been put into discontinuous port set in the combined coding; Therefore can select the port of reference signal more flexibly; Thereby between the user of different districts, support the more demodulation pilot frequency orthogonal transmission of multilayer, thereby perhaps support to strengthen the transmission of Physical Downlink Shared Channel of transmission and the multilayer of down control channel simultaneously.
Preferably, step S102 may further include following processing: confirm that according to above-mentioned transmission parameter the layer when transmitting based on the subscriber equipment specific reference signals arrives the mapping mode of antenna port, and generate the parameter indication signaling according to this mapping mode.
After the transmission parameters such as the number of plies, scrambler sequence identity, antenna port, pilot-frequency expense to transmission carry out combined coding; Can determine layer the mapping mode when transmitting to antenna port based on the subscriber equipment specific reference signals; For example, when number of layers is v, if its corresponding port is { p
0, p
1... p
V-1, layer i (o≤i≤then v-1) corresponding to port p
iJust can design the parameter indication signaling then, and finally generate the parameter indication signaling according to this corresponded manner.
Wherein, pilot frequency information can comprise pilot frequency design and/or pilot frequency mode.Pilot frequency design and pilot frequency mode are of equal value, and the pilot frequency mode that pilot frequency design is corresponding unique can be confirmed pilot frequency design through corresponding pilot frequency mode.During indication combined coding parameter, can directly indicate pilot frequency design or pilot frequency mode or pilot frequency information.The number of plies of transmission and the order (rank value) of transmission are of equal value, the number of plies that the representative of rank value was transmitted this UE when multi-user and single user were transmitted; The index of antenna port and layer can be corresponding one by one through mapping mode, and used antenna port when multi-user and single user are transmitted can be known the index of layer.The embodiment of the invention also obtains above equivalent information through signaling.
Wherein, spreading code information comprises the long and concrete spreading code of spreading code.In an embodiment; During indication combined coding parameter, can directly indicate the spread spectrum code length, directly the indication spreading code; The spread spectrum code length that can also indicate the label of spreading code information just can indicate to comprise in the spreading code information and concrete spreading code information, as shown in table 2 below:
Table 2 spreading code information table
Need to prove; Various corresponding relations in the embodiment of the invention (for example in the form behind the combined coding corresponding relation of index and specific object corresponding relation, antenna port and the number of plies, the index of layer and the corresponding relation of pilot frequency design) are not limited to this unique corresponding relation; Promptly; Their order can be exchanged combination arbitrarily, as long as corresponding one by one.Particularly, the specific object that the index behind combined coding is corresponding unique, the index behind the corresponding unique combined coding of specific object.Just enumerate its corresponding a kind of possibility in the embodiment of the invention, as long as the state consistency of specific object promptly is included in protection scope of the present invention.
Embodiment two
A kind of Downlink Control Information indicating device also is provided in the embodiment of the invention; Be applied to support the base station of descending multilayer (MIMO) transmission, as shown in Figure 2, the present embodiment device mainly comprises the control information generation module; Physical downlink channel control signal generation module and sending module, wherein:
The control information generation module is used to produce Downlink Control Information, comprises an indication signaling at least, the combined coding of the parameter that the port set that is used to indicate discontinuous port to constitute is relevant with other UE DRS (Dedicated Reference Signal).
The physical downlink channel control signal generation module is used for Downlink Control Information handled obtaining physical downlink channel control signal.
Sending module, the signal that is mainly used in down control channel sends to terminal UE.
Further, said control information generation module is through a plurality of state values of said indication signaling, and said indication signaling has a plurality of state values, an antenna port set of a unique indication of state value and one group of UE DRS (Dedicated Reference Signal) related parameter values.
Further, said control information generation module is used for, and through the indication signaling in the descending control format, indicates the combined coding of said antenna port information and UE DRS (Dedicated Reference Signal) relevant parameter.
Further, the said UE DRS (Dedicated Reference Signal) relevant parameter of said control information generation module indication comprises one of following parameter or its combination in any: the number of plies of transmission, scrambler sequence identity, spreading code information, reference signal information;
Wherein, said spreading code information comprises one of following information at least: spread spectrum code length, concrete spreading code;
Said reference signal information comprises reference signal pattern or reference signal expense.
Further, said sending module is used for, and the downlink physical control channel that perhaps strengthens through downlink physical control channel sends to said UE with said physical downlink channel control signal.
Need to prove that relation can be replaced arbitrarily between state described in the foregoing description and the signaling bit value, as long as the identical description of said state all is included in the invention scope.
Specify the realization of technical scheme of the present invention below in conjunction with a concrete example.
Base station eNodeB produces Downlink Control Information, comprises the combined coding of the parameter that port set that an indication signaling is used to indicate discontinuous port to constitute is relevant with other UE DRS (Dedicated Reference Signal) at least.
The parameter that described other UE DRS (Dedicated Reference Signal) is relevant comprises following five kinds of situation: first kind of situation is the number of plies that said parameter comprises transmission; Second kind of situation is that described parameter comprises the transmission number of plies, scrambler sequence identity; The third situation is the number of plies, scrambler sequence identity, the spreading code information that described parameter comprises transmission; The 4th kind of situation is that described parameter comprises: the number of plies of transmission, scrambler sequence identity, reference signal information; The 5th kind of situation is that described parameter comprises: the number of plies of transmission, scrambler sequence identity, spreading code information and reference signal information.
Among the present invention, described sets of ports conjunction value comprises one of following nine kinds of situation or its combination in any at least: first kind of situation is the port set that port 7 and 9 constitutes; Second kind of situation is the port set that port 7 and 10 constitutes; The third situation is the port set that port 8 and 9 constitutes; The 4th kind of situation is the port set that port 8 and 10 constitutes; The 5th kind of situation is the port set that port 9 and 10 constitutes; The 6th kind of situation is the port set that port 7,9 and 10 constitutes; The 7th kind of situation is the port set that port 8,9 and 10 constitutes; The 8th kind of situation is the port set that port 7,8 and 9 constitutes; The 9th kind of situation is the port set that port 7,8 and 10 constitutes;
More concrete example is described below, and comprises one of following various situation or its combination in any:
When one or two transmission blocks enable; The number of plies, scrambler sequence identity, antenna port information to transmission carry out combined coding, generate the parameter indication signaling of 4 bits, and this indicator has 16 state values; Wherein, Said indication signaling has a plurality of state values, and said indication signaling has a plurality of state values, an antenna port set of a unique indication of state value and one group of UE DRS (Dedicated Reference Signal) related parameter values.
Concrete definition is as follows in this example:
Signaling equals x1, indication port 7 and 9, and the transmission number of plies equals 2, and the scrambler identity equals 0;
The benefit of this state indication is that if the down control channel (the perhaps downlink transfer of neighbor cell) that strengthens has taken port 8, in order to evade resource contention, current 2 layers of descending transmission no longer can be used traditional port 8, can select port 7 and 9.
Signaling equals x2, corresponding port 7 and 10, and the transmission number of plies equals 2, and the scrambler identity equals 0;
The benefit of this state indication is; If the down control channel (the perhaps downlink transfer of neighbor cell) that strengthens has taken port 8 and port 9; In order to evade resource contention, current 2 layers of descending transmission no longer can be used traditional port 8 and port 9, can select port 7 and 10.
Signaling equals x3, corresponding port 8 and 9, and the transmission number of plies equals 2, and the scrambler identity equals 0;
The benefit of this state indication is that if the down control channel (the perhaps downlink transfer of neighbor cell) that strengthens has taken port 7, in order to evade resource contention, current 2 layers of descending transmission no longer can be used traditional port 7, can select port 8 and 9.
Signaling equals x4, corresponding port 8 and 10, and the transmission number of plies equals 2, and the scrambler identity equals 0;
The benefit of this state indication is; If the down control channel that strengthens has taken the downlink transfer of port 7 and neighbor cell and has taken and port 9; In order to evade resource contention, current 2 layers of descending transmission no longer can be used traditional port 7 and port 9, can select port 8 and 10.
Signaling equals x5, corresponding port 9 and 10, and the transmission number of plies equals 2, and the scrambler identity equals 0;
The benefit of this state indication is; If the down control channel (the perhaps downlink transfer of neighbor cell) that strengthens has taken port 7 and port 8; In order to evade resource contention, current 2 layers of descending transmission no longer can be used traditional port 7 and port 8, can select port 9 and 10.
Signaling equals x6, corresponding port 7,9 and 10, and the transmission number of plies equals 2, and the scrambler identity equals 0;
The benefit of this state indication is; If the down control channel (the perhaps downlink transfer of neighbor cell) that strengthens has taken port 8; In order to evade resource contention, current 2 layers of descending transmission no longer can be used traditional port 8, can select port 7,9 and 10.
Signaling equals x7, corresponding port 8,9 and 10, and the transmission number of plies equals 2, and the scrambler identity equals 0;
The benefit of this state indication is; If the down control channel (the perhaps downlink transfer of neighbor cell) that strengthens has taken port 7; In order to evade resource contention, current 2 layers of descending transmission no longer can be used traditional port 7, can select port 8,9 and 10.
Signaling equals x8, corresponding port 7,8 and 9, and the transmission number of plies equals 3, and the scrambler identity equals 0;
The benefit of this state indication is; If the down control channel (the perhaps downlink transfer of neighbor cell) that strengthens has taken port one 0; In order to evade resource contention, current 2 layers of descending transmission no longer can be used traditional port one 0, can select port 7,8 and 9.
Signaling equals x9, corresponding port 7,8 and 10, and the transmission number of plies equals 3, and the scrambler identity equals 0;
The benefit of this state indication is; If the down control channel (the perhaps downlink transfer of neighbor cell) that strengthens has taken port 9; In order to evade resource contention, current 2 layers of descending transmission no longer can be used traditional port 9, can select port 7,8 and 10.
Wherein, from x1 to x9, all be the numeral between 0 to 15;
Wherein, described spreading code information comprises one of following information at least: spread spectrum code length, concrete spreading code.Described reference signal information is meant reference signal pattern or reference signal expense.
Base station eNodeB sends to terminal UE through the downlink physical control channel of downlink physical control channel or enhancing with described Downlink Control Information.
More than be merely preferred case study on implementation of the present invention; Be not limited to the present invention; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof, those of ordinary skill in the art can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, and in some cases, can carry out step shown or that describe with the order that is different from here by calculation element; Perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
Claims (12)
1. a Downlink Control Information indicating means is characterized in that,
The base station is that subscriber equipment (UE) generates Downlink Control Information, and said Downlink Control Information comprises indication signaling, and said indication signaling is used to indicate the combined coding information of antenna port information and UE DRS (Dedicated Reference Signal) relevant parameter;
Wherein, said antenna port information value comprises one of following antenna port set or its combination in any:
Port 7 and 9; Port 7 and 10; Port 8 and 9; Port 8 and 10; Port 9 and 10; Port 7,9 and 10; Port 8,9 and 10; Port 7,8 and 9; Port 7,8 and 10.
2. the method for claim 1 is characterized in that,
Said indication signaling has a plurality of state values, an antenna port set of a unique indication of state value and one group of UE DRS (Dedicated Reference Signal) related parameter values.
3. the method for claim 1 is characterized in that,
The combined coding of said antenna port information and UE DRS (Dedicated Reference Signal) relevant parameter is indicated through the indication signaling in the descending control format in said base station.
4. like claim 1,2 or 3 described methods, it is characterized in that,
Said UE DRS (Dedicated Reference Signal) relevant parameter comprises one of following parameter or its combination in any: the number of plies of transmission, scrambler sequence identity, spreading code information, reference signal information.
5. method as claimed in claim 4 is characterized in that,
Said spreading code information comprises one of following information at least: spread spectrum code length, concrete spreading code.
6. method as claimed in claim 4 is characterized in that,
Said reference signal information comprises reference signal pattern or reference signal expense.
7. like claim 1,2 or 3 described methods, it is characterized in that,
The said Downlink Control Information that the downlink physical control channel that said base station perhaps strengthens through downlink physical control channel will generate sends to said UE.
8. a Downlink Control Information indicating device is characterized in that, is applied to support the base station of descending multilayer (MIMO) transmission, and said device comprises the control information generation module, physical downlink channel control signal generation module and sending module, wherein:
Said control information generation module is used for, and for UE generates Downlink Control Information, in the Downlink Control Information that generates, comprises indication signaling, and said indication signaling is used to indicate the combined coding information of antenna port information and UE DRS (Dedicated Reference Signal) relevant parameter; Wherein said antenna port information value comprises one of following antenna port set or its combination in any: port 7 and 9; Port 7 and 10; Port 8 and 9; Port 8 and 10; Port 9 and 10; Port 7,9 and 10; Port 8,9 and 10; Port 7,8 and 9; Port 7,8 and 10;
Said physical downlink channel control signal generation module is used for, and Downlink Control Information is handled, and obtains physical downlink channel control signal;
Said sending module is used for, and physical downlink channel control signal is sent to UE.
9. device as claimed in claim 8 is characterized in that,
Said control information generation module is through a plurality of state values of said indication signaling, and said indication signaling has a plurality of state values, an antenna port set of a unique indication of state value and one group of UE DRS (Dedicated Reference Signal) related parameter values.
10. like claim 8 or 9 described devices, it is characterized in that,
Said control information generation module is used for, and through the indication signaling in the descending control format, indicates the combined coding of said antenna port information and UE DRS (Dedicated Reference Signal) relevant parameter.
11. device as claimed in claim 10 is characterized in that,
The said UE DRS (Dedicated Reference Signal) relevant parameter of said control information generation module indication comprises one of following parameter or its combination in any: the number of plies of transmission, scrambler sequence identity, spreading code information, reference signal information;
Wherein, said spreading code information comprises one of following information at least: spread spectrum code length, concrete spreading code;
Said reference signal information comprises reference signal pattern or reference signal expense.
12. like claim 8 or 9 described devices, it is characterized in that,
Said sending module is used for, and the downlink physical control channel that perhaps strengthens through downlink physical control channel sends to said UE with said physical downlink channel control signal.
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| CN201110296115.6A CN102315870B (en) | 2011-09-30 | 2011-09-30 | A kind of Downlink Control Information indicating means and device |
| PCT/CN2011/083924 WO2012155502A1 (en) | 2011-09-30 | 2011-12-14 | Method and apparatus for indicating downlink control information |
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