CN102355338A - Method and device for transmitting channel information - Google Patents
Method and device for transmitting channel information Download PDFInfo
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- CN102355338A CN102355338A CN2011102296887A CN201110229688A CN102355338A CN 102355338 A CN102355338 A CN 102355338A CN 2011102296887 A CN2011102296887 A CN 2011102296887A CN 201110229688 A CN201110229688 A CN 201110229688A CN 102355338 A CN102355338 A CN 102355338A
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Abstract
The invention discloses a method and a device for transmitting channel information, which are used for transmitting and feeding back more accurate channel information by the enhanced PDCCH (Physical Downlink Control Channel). The method provided by the invention comprises the following steps of: determining the channel information to be transmitted according to a downlink channel estimation value; and transmitting the channel information to a network side, wherein the channel information comprises the channel quality indicator (CQI) of a sub-band, and the sub-band is obtained by dividing the resource corresponding to an E-PDCCH (Enhanced-Physical Downlink Control Channel).
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of channel information sending method and device.
Background technology
At Long Term Evolution (Long Term Evolution; LTE) in the system; Physical Downlink Control Channel (Physical Downlink Control Channel; PDCCH) in each wireless sub-frame, send; And with physical down link sharing channel (Physical Downlink Shared Channel; PDSCH) form time division multiplexing (Time Division Multiplexing, multiplexing relation TDM).PDCCH is through top n OFDM (the Orthogonal Frequency Division Multiplex of a descending sub frame; OFDM) symbol sends; Wherein the possible value of N is 1,2,3 or 4, and N=4 only allows to appear in the system that system bandwidth is 1.4MHz.
Referring to Fig. 1; The control area of transmission PDCCH is control channel unit (the Control Channel Element by logical partitioning in the LTE system; CCE) constitute, wherein (Resource Element, the mode that interweaves has fully been adopted in mapping RE) to CCE to Resource Unit.Downlink Control Information (Downlink Control Information; DCI) transmission also is unit with CCE; To a subscriber equipment (User Equipment; UE) a DCI can send in N continuous CCE; The possible value of N is 1,2,4 or 8 in the LTE system, is called CCE polymerization grade (Aggregation Level).UE carries out the PDCCH blind check in the control area; Whether search exists the PDCCH to its transmission; Radio Network Temporary Identifier (the Radio Network Temporary Identifier of this UE is promptly used in blind check; RNTI) to the trial of decoding of different DCI forms and CCE polymerization grade; If decoding is correct, then receive DCI to this UE.(Discontinuous Reception, DRX) descending sub frame of each in the state all need carry out blind check to the control area to LTE UE, search PDCCH in discontinuous reception.
Because multiuser MIMO (Multiple Users MIMO; MU-MIMO), cooperative multipoint transmission (Coordinated Multi-Point transmission; CoMP), the far-end of technology such as carrier aggregation and same cell ID (ID) does not have the end of a thread (remote radio head; RRH), the introducing of configuration such as 8 antennas; Senior Long Term Evolution (Long Term Evolution Advanced, LTE-A) capacity of the Physical Downlink Shared Channel of system and efficiency of transmission will significantly be promoted; And early stage relatively LTE version (like Rel-8/9), the Physical Downlink Control Channel of LTE-A system is not but benefited from new technology and is obtained to promote.
On the one hand, The application of new technique makes the PDSCH can be simultaneously for more users provide transfer of data, and this will improve the demand to the PDCCH channel capacity greatly; On the other hand; The user-specific reference signal of in PDSCH, using (user-specific reference signal; UE-RS) (relay-PDCCH, R-PDCCH) etc. new technology is that the enhancing of PDCCH provides governed technology and experience to the relaying PDCCH that uses and in relaying backhaul (Relay backhaul).
In order to solve the limited problem of down control channel capacity; And improve the efficiency of transmission of Downlink Control Information; A solution is: when keeping original PDCCH territory, the PDCCH that transmission strengthens in the PDSCH territory in descending sub frame (Enhanced PDCCH, E-PDCCH).Original PDCCH still adopts existing transmission and reception technique in the territory; Use original PDCCH resource; As adopt when sending to send and divide collection; During reception based on public reference signal (Cell-specific Reference Signal; CRS) adopt the blind check technology DCI to be carried out blind check in common search space and user-specific search volume; Taking top n OFDM symbol sends; Wherein the possible value of N is 1,2,3 or 4; And N=4 only allows to appear in the system that system bandwidth is 1.4MHz, and this part PDCCH territory is called original PDCCH (legacy PDCCH) territory.More advanced transmission and reception technique can be used in the PDCCH territory that strengthens; As adopt precoding when sending; Detect based on DM-RS during reception; The running time-frequency resource that takies beyond the legacy PDCCH territory sends; Use the part resource of original PDSCH; Realize multiplexingly with the mode of PDSCH through frequency division, this part PDCCH territory is called (Enhanced) PDCCH territory of enhancing.This Enhanced PDCCH and PDSCH realize that through the frequency division mode multiplexing scheme is called frequency division multiplexing (Frequency Division Multiplex, FDM) E-PDCCH.
Referring to Fig. 2, the employed resource location of PDSCH can be indicated through the Downlink Control Information DCI among the PDCCH, and for the PDCCH that strengthens, a kind of method is can only be through the employed resource location of high-level signaling indication E-PDCCH.Because the mutual cycle of high-level signaling is longer,, then can make E-PDCCH can't fully obtain the frequency selectivity gain if by the definite E-PDCCH resource location of high-level signaling indication.So generally speaking, high-level signaling can distribute one group of available resources for E-PDCCH, and the part resource can be selected for E-PDCCH based on the channel information that UE fed back in the base station in the available resources scope of high level configuration in transmission.When UE carries out the reception of E-PDCCH resource, can in the available resources scope of high level configuration, carry out the E-PDCCH blind Detecting, thereby obtain the compromise of the blind check complexity and the scheduling degree of freedom.
Support to strengthen the PDCCH transmission; Need corresponding feedback of channel information; Like channel quality indication (Channel Quality Indicator; CQI) be used for the user and dispatch, confirm polymerization grade and/or adjustment Modulation and Coding Scheme (Modulation and Coding Scheme; MCS) and/or MU-MIMO pairing etc.; Pre-coding matrix indication (Precoding Matrix Indicator; PMI) be used for confirming wave beam forming, multi-subscriber dispatching and MU-MIMO pairing etc., RI information can be used for specified data and transmit the employed number of plies etc.
Support 4 kinds of channel information periodic feedback patterns in the LTE/LTE-A system at present; As shown in Figure 3; Pattern 1-0 is broadband CQI feedback; Pattern 1-1 comprises 2 sub-modes; Support RI, broadband P MI and CQI feedback; Because the E-PDCCH data volume is less; The transmission reliability that possibly only take running time-frequency resource seldom and need is higher; Thereby need more precise channels feedback information etc.; Existing pattern 1-0 and pattern 1-1 can't provide littler PMI of frequency domain granularity and/or CQI information for E-PDCCH, therefore are not suitable for E-PDCCH channel transmitted feedback information; Pattern 2-0 is used for subband CQI and the broadband CQI that feedback user is selected; On the one hand; If adopt one group of available resources of high-rise configuration; Confirm the mode of E-PDCCH resource location in conjunction with the UE blind check; The selected subband CQI of UE is not necessarily in the available resources scope that high level disposed; At this moment, can't littler PMI of frequency domain granularity and/or CQI information be provided for E-PDCCH; On the other hand, (Bandwidth Part, BP) size is relevant with system bandwidth, as shown in Figure 4, does not consider the available resources situation of high-rise configuration for pairing subband of subband CQI among the pattern 2-0 and portions of bandwidth.Because the less frequency domain resource that it takies of E-PDCCH data volume maybe be much smaller than the subband size in the present subband CQI feedback, therefore, pattern 2-0 can not support the E-PDCCH transmission well.Pattern 2-1 is used to feed back RI, broadband P MI/CQI, subband CQI (or subband PMI/CQI) information.Except with pattern 2-0 has identical problem; The RI value possibility higher (maximum RI=8) that transmission is fed back to PDSCH; And only need hang down Rank even only need the transmission of Rank=1; When feedback PMI is high Rank; And the number of data layers that E-PDCCH transmission is supported be lower than when feeding back the RI value; PMI can only obtain through the code book Nested property, and the PMI information of this moment is often bad to the spatial channel information quantification of low Rank, thereby can cause the transmission performance of E-PDCCH not good.
That is to say that pattern 1-0 and 1-1 can't satisfy the E-PDCCH feedback of channel information demand less to the frequency domain granularity; Selected subband is not necessarily joined in the E-PDCCH available resources scope in high-rise institute among pattern 2-0 and the pattern 2-1, can't satisfy the E-PDCCH feedback of channel information demand less to the frequency domain granularity this moment equally; And pattern RI that 2-1 feeds back possibly be higher than the maximum Rank number that the E-PDCCH transmission can be supported, the low Rank PMI that utilizes this moment Nested property to obtain quantizes performance and has loss.
In sum, the PDCCH of enhancing transmission utilizes transmission technologys such as original PDSCH resource, employing wave beam forming can improve the efficiency of transmission of PDCCH capacity and raising PDCCH.Compare the general data transmission; The PDCCH that strengthens since data volume lessly possibly only take seldom running time-frequency resource, only need low Rank even only need the transmission reliability of transmission, needs of Rank=1 higher; Thereby need more precise channels feedback information etc., therefore existing to the general data transmission and the PDCCH transmission that the feedback model of design will be not suitable for strengthening.
Summary of the invention
The embodiment of the invention provides a kind of channel information sending method and device, in order to feed back precise channels information more to the PDCCH transmission that strengthens.
A kind of channel information sending method that the embodiment of the invention provides comprises:
According to the down channel estimated value, need to confirm the channel information of transmission;
To the network side channel information, wherein, said channel information comprises sub-band channel quality indication CQI, and said subband is through the corresponding resource of enhanced physical down control channel E-PDCCH is divided resulting subband.
A kind of channel information dispensing device that the embodiment of the invention provides comprises:
Channel information is confirmed the unit, is used for according to the down channel estimated value, need to confirm the channel information of transmission;
Transmitting element is used for to the network side channel information;
Wherein, said channel information comprises sub-band channel quality indication CQI, and said subband is through the corresponding resource of enhanced physical down control channel E-PDCCH is divided resulting subband.
The embodiment of the invention through according to the down channel estimated value, need to confirm the channel information of transmission; To the network side channel information; Wherein, Said channel information comprises sub-band channel quality indication CQI; Said subband; Be through the corresponding resource of enhanced physical down control channel E-PDCCH being divided resulting subband, feeding back precise channels information more thereby realized being directed against the PDCCH transmission that strengthens.
Description of drawings
Fig. 1 is the multiplexing sketch map that concerns of control area and data area in the descending sub frame;
Fig. 2 is a kind of enhancing PDCCH structural representation;
Fig. 3 reports CQI and PMI feedback kind sketch map under the pattern for PUCCH CSI;
Fig. 4 is the sketch map that concerns of the corresponding subband size of subband CQI and broadband part size and downlink system bandwidth;
The schematic flow sheet of a kind of channel information sending method that Fig. 5 provides for the embodiment of the invention;
Fig. 6 is the sketch map of the channel information of transmission in the embodiment of the invention one;
Fig. 7 is the sketch map of the channel information of transmission in the embodiment of the invention two;
Fig. 8 is the sketch map of the channel information of transmission in the embodiment of the invention three;
Fig. 9 is the sketch map of the channel information of transmission in the embodiment of the invention four;
Figure 10 is the sketch map of the channel information of transmission in the embodiment of the invention five;
Figure 11 is the sketch map of the channel information of transmission in the embodiment of the invention six;
Figure 12 is the sketch map of the channel information of transmission in the embodiment of the invention seven;
Figure 13 is the sketch map of the channel information of transmission in the embodiment of the invention eight;
Figure 14 is the sketch map of the channel information of transmission in the embodiment of the invention nine;
Figure 15 is the sketch map of the channel information of transmission in the embodiment of the invention ten;
Figure 16 is the sketch map of the channel information of transmission in the embodiment of the invention 11;
Figure 17 is the sketch map of the channel information of transmission in the embodiment of the invention 12;
Figure 18 is the sketch map of the channel information of transmission in the embodiment of the invention 13;
The structural representation of a kind of channel information dispensing device that Figure 19 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of channel information sending method and device, in order to feed back precise channels information more to the PDCCH transmission that strengthens.
The technical scheme that the embodiment of the invention provides; Take the characteristics that running time-frequency resource is few, need low Rank and high feedback accuracy when transmitting to the PDCCH that strengthens; Support the PDCCH channel transmitted feedback information of enhancing, thereby can support the PDCCH that strengthens to transmit better.
Below in conjunction with accompanying drawing the technical scheme that the embodiment of the invention provides is described.
Referring to Fig. 5, a kind of channel information sending method that the embodiment of the invention provides comprises step:
S101, according to the down channel estimated value, the channel information that confirm to need sends;
According to the down channel estimated value, confirm RI, PMI and/or CQI in the prior art.Wherein, The frequency domain reference resources of determined RI is that total system bandwidth, PMI and CQI are the PMI and the CQI of broadband or subband; The frequency domain reference resources of broadband P MI and CQI is the total system bandwidth, the subband of the frequency domain reference resources of subband PMI and CQI for dividing according to system bandwidth.
The difference of the frequency domain reference resources scope when embodiment of the invention difference with the prior art is to calculate RI, PMI and/or CQI.
S102, to the network side channel information; Wherein, Said channel information comprises sub-band channel quality indication CQI, and said subband is to divide resulting subband through the resource corresponding to enhanced physical down control channel E-PDCCH (being the available resources of pre-configured E-PDCCH).
Preferably, the resource that said E-PDCCH is corresponding comprises many parts resource, and every part resource is continuous on frequency domain, and on frequency domain, has between the each several part resource at interval, and each part resource is a subband.
For example, high-rise configuration the corresponding resource of E-PDCCH comprise continuous resource part on M the frequency domain, each resource has the interval on the frequency domain between partly, can be the continuous resource part of each frequency domain as a subband.
Preferably, said channel information also comprises:
Subband pre-coding matrix indication PMI, broadband P MI, broadband CQI, subband positional information and/or order indication RI.
Preferably, the scope in said broadband is the total bandwidth of the corresponding resource of the E-PDCCH of downlink system bandwidth or high-rise configuration.
Preferably, said subband positional information, by the number value of the pairing subband of feedback sub-band channel information in the corresponding scope of resource of E-PDCCH.
Preferably, when said channel information also comprised RI, the value of RI was less than or equal to N, N for preset greater than 1 integer.
Preferably, the value of said N is 2.
Preferably, said channel condition information also comprises the PMI that calculates based on Rank=1 and CQI and the PMI and the CQI that calculate based on Rank=2.
Preferably, said to the network side channel information, comprising:
According to the cycle and the sub-frame offset of high level configuration, pass through Physical Uplink Control Channel PUCCH cycle channel information at delivery time.
Preferably, said at delivery time through PUCCH cycle channel information, comprising:
According to the frequency domain order of each subband, send one or more subband CQI at delivery time through the PUCCH cycle at every turn, finish up to all subband CQI transmissions.
That is to say that a kind of channel information feedback method that the embodiment of the invention provides comprises:
Step 1: obtain channel information to be feedback based on the down channel estimated value, said channel information comprises the subband CQI that calculates based on the sub-band division of setting.
Step 2: channel information.
Preferably, the sub-band division of said setting is that the partition of available resources that high level is disposed is a M subband, M＞=1;
Preferably, the available resources of said high-rise configuration are the available resources of E-PDCCH transmission.
Preferably, the available resources of said high-rise configuration comprise continuous resource part on M the frequency domain, have at interval on the frequency domain between each resource part, and continuous resource part is 1 subband on each frequency domain.
Preferably, said channel information can also comprise subband PMI.
Preferably, said channel information can also comprise broadband P MI, and said broadband range is the total bandwidth of the available resources of downlink system bandwidth or high-rise configuration.
Preferably, said channel information can also comprise broadband CQI, and said broadband range is the total bandwidth of the available resources of downlink system bandwidth or high-rise configuration.
Preferably, said channel information can also comprise the subband positional information, and said subband positional information is the pairing subband of subband CQI that is fed back, the numbering in the available resources scope of high level configuration.
Perhaps, said subband positional information is selected sets of subbands number value in all optional sets of subbands scopes in the corresponding scope of resource of E-PDCCH.
Specifically, E-PDCCH within the resources corresponding to a total of M sub-band, the optional M 'sub-band for channel information reporting, the total
selectable sub-band combination, where C represents calculate the number of combinations.Can leave
selectable sub-band combinations are numbered sequentially from 0 through feedback selected combination of numbers which indicate the selected sub-bands.
For example; Have 4 subbands in the scope of resource of E-PDCCH correspondence; Optional 2 sons are brought capable reporting channel information into; Then total
totally 6 kinds of optional subband combinations; Be respectively the 1st and 2 subbands (this combination reference numeral 0), the 1st and 3 subbands (this combination reference numeral 1), the 1st and 4 subbands (this combination reference numeral 2), the 2nd and 3 subbands (this combination reference numeral 3), the 2nd and 4 subbands (this combination reference numeral 4), the 3rd and 4 subbands (this combination reference numeral 5); Be that each subband combination corresponds respectively to numbering 0,1,2,3,4,5; Then UE only need feed back the numbering between 0～5, and network side is promptly known selected which subband that is specially of UE.Certainly, during precondition, UE and network side consult to confirm the corresponding relation between the numbering of good every kind of subband combination and this combination in advance.
Preferably, said channel information can also comprise RI, and described span is RI≤N.
Preferably, N=2.
Preferably, when said channel information can also comprise RI, and RI is to the maximum at 2 o'clock, and said channel information also comprises the subband PMI that calculates based on Rank=1 and subband CQI and based on the subband PMI and the subband CQI of Rank=2 calculating.
Subband PMI and the subband CQI that calculates based on Rank=1 wherein; With the subband PMI and the subband CQI that calculate based on Rank=2; Can adopt prior art; Particularly: RI is the number of plies of the transmission data of UE recommendation; PMI is the pre-coding matrix index of the corresponding number of plies that UE recommended, the CQI of CQI for calculating based on this pre-coding matrix.Such as, based on the PMI of RI=1 for from the number of plies being the index of the pre-coding matrix selected 1 the code book, the single codeword CQI of CQI for calculating based on this pre-coding matrix; Based on the PMI of RI=2 for from the number of plies being the index of the pre-coding matrix selected 2 the code book, the dicode word CQI of CQI for calculating based on this pre-coding matrix.
Preferably, said channel information also comprises PMI and the CQI that calculates based on the RI that is reported.
Provide the explanation of several specific embodiments below.
Embodiment one:
Need the channel information of feedback to include only subband CQI, the CQI of all subbands (for example total M subband) is divided into a plurality of groups, for example, K subband CQI constitutes one group, and each is organized subband CQI and reports network side through polling mode.Promptly according to the frequency domain order of each subband, cycle and sub-frame offset according to the high level configuration send one or more subband CQI at delivery time through the PUCCH cycle at every turn, send up to all subband CQI to finish.
Especially, when K=1, the CQI that accomplishes M subband in the available resources scope that high level is joined reports and needs M sub-frame of uplink;
Especially, when K=M, accomplish the high-rise CQI that joins M subband in the available resources scope and report 1 sub-frame of uplink of needs.
The channel information that reports as shown in Figure 6; Wherein, PUCCH reporting types among this embodiment (PUCCH Reporting type) is pattern e-0-1 (mode e-0-1), comprises a kind of reporting types (reporting type), is designated as reporting type e-0-1-1; B
SubCQIRepresent the bit number that each subband CQI is comprised.
Embodiment two:
Need the channel information of feedback to comprise subband CQI and subband positional information, report the CQI information of the individual subband of selected M ' altogether.
Particularly, how from M subband CQI, to select the CQI of the individual subband of M ', depend on the algorithm of UE end.For example, can the selective channel condition CQI of the individual subband of M ' preferably.
The channel information that reports as shown in Figure 7, wherein, the PUCCH reporting types among this embodiment is PUCCH mode e-0-2, comprises a kind of reporting type, is designated as reporting type e-0-2-1.
Wherein, K is the number of the subband CQI that comprised among the reporting type, and L representes the bit number that the subband positional information is comprised.
Embodiment three:
Need the channel information of feedback to comprise broadband CQI and subband CQI.
The channel information that reports as shown in Figure 8; Wherein, subband CQI does not comprise the subband positional information, and the PUCCH reporting types among this embodiment is PUCCH mode e-0-3; Comprise 2 kinds of reporting type, be designated as reporting type e-0-3-1 and reporting type e-0-3-2 respectively.
Wherein, B
WbCQIThe bit number that expression broadband CQI is comprised.
Embodiment four:
The channel information that reports comprises broadband CQI and subband CQI; As shown in Figure 9; Wherein, Subband CQI comprises the subband positional information; PUCCH reporting types among this embodiment is PUCCH mode e-0-4; Comprise 2 kinds of reporting type, be designated as reporting type e-0-4-1 and reporting type e-0-4-2 respectively.
Embodiment five:
Need the channel information of feedback to comprise subband PMI and subband CQI.
The channel information that reports as shown in figure 10, the PUCCH reporting types among this embodiment is PUCCHmode e-1-1, comprises a kind of reporting type, is designated as reporting type e-1-1-1.
Wherein, B
SubPMIExpression subband bit number that PMI comprises.
Embodiment six:
Need the channel information of feedback to comprise subband PMI, subband CQI and subband positional information.
The channel information that reports as shown in figure 11, the PUCCH reporting types among this embodiment is PUCCHmode e-1-2, comprises a kind of reporting type, is designated as reporting type e-1-2-1.
Embodiment seven:
Need the channel information of feedback to comprise broadband P MI, broadband CQI and subband CQI information.
The channel information that reports as shown in figure 12, the PUCCH reporting types among this embodiment is PUCCH mode e-1-3, comprises 2 kinds of reporting type, is designated as reporting type e-1-3-1 and reporting type e-1-3-2 respectively.
Wherein, B
WbPMIThe bit number that expression broadband P MI is comprised.
Embodiment eight:
Need the channel information of feedback to comprise broadband P MI, broadband CQI, subband PMI and subband CQI.
The channel information that reports as shown in figure 13, the PUCCH reporting types among this embodiment is PUCCH mode e-1-4, comprises 2 kinds of reporting type, is designated as reporting type e-1-4-1 and reporting type e-1-4-2 respectively.
Embodiment nine:
PMI and CQI when needing the channel information of feedback to comprise the Rank=1 of all subbands, and PMI and CQI during the Rank=2 of selected subband.
The channel information that reports as shown in figure 14; PUCCH reporting types among this embodiment is PUCCH mode e-1-5; Comprise 3 kinds of reporting type, be designated as reporting type e-1-5-1, reporting type e-1-5-2 and reporting type e-1-5-3 respectively.
Wherein, B
SubPMI2The bit number that subband PMI is comprised during expression RI=2, B
SubPCQI2The bit number that subband CQI is comprised during expression RI=2.
Particularly, how to select subband, depend on the algorithm of UE end.For example, can the selective channel condition subband preferably.
Embodiment ten:
Need the channel information of feedback to comprise: PMI and CQI during the Rank=1 of all subbands, and PMI and CQI during the Rank=2 of selected subband.
The channel information that reports as shown in figure 15; PUCCH reporting types among this embodiment is PUCCHmode e-1-6; Comprise 3 kinds of reporting type, be designated as reporting type e-1-6-1, reporting type e-1-6-2 and reporting type e-1-6-3 respectively.
Embodiment 11:
Need the channel information of feedback to comprise: the PMI of RI, selected subband and CQI, and all subbands PMI and CQI.
The channel information that reports as shown in figure 16; PUCCH reporting types among this embodiment is PUCCH mode e-1-7; Comprise 3 kinds of reporting type, be designated as reporting type e-1-7-1, reporting type e-1-7-2 and reporting type e-1-7-3 respectively.
In the embodiment of the invention; Based on the value of the RI that is reported, confirm that it still is the channel information of selected subband that different Rank correspondences reports all subbands, particularly: if RI=1; Then report PMI and the CQI of the Rank=1 of all subbands, report PMI and the CQI of the Rank=2 of selected subband; As if RI=2, then report PMI and the CQI of the Rank=1 of selected subband, report PMI and the CQI of the Rank=2 of all subbands.
Embodiment 12:
Need the channel information of feedback to comprise: RI, based on broadband P MI and CQI information that RI calculated, and based on subband CQI information that RI calculated.
The channel information that reports as shown in figure 17; PUCCH reporting types among this embodiment is PUCCH mode e-1-8; Comprise 3 kinds of reporting type, be designated as reporting type e-1-8-1, reporting type e-1-8-2 and reporting type e-1-8-3 respectively.
Wherein, B
WbCQIXThe bit number that the broadband CQI that expression calculates based on RI is comprised, B
WbPMIXThe bit number that broadband P MI comprised that expression calculates based on RI, B
SubCQIXThe number of the sub-band channel information that the bit number that the subband CQI that expression calculates based on RI is comprised, K are represented to be comprised in the PUCCH resource, K is the parameter of set point or high-rise configuration, for more than or equal to 1 and be not more than the integer of subband number.
Embodiment 13:
Need the channel information of feedback to comprise: broadband P MI and CQI information, subband CQI information and RI information.
The channel information that reports as shown in figure 18; PUCCH reporting types among this embodiment is mode e-1-9; Comprise 3 kinds of reporting type; Be designated as reporting type e-1-9-1, reporting type e-1-9-2 and reporting type e-1-9-3 respectively, be respectively applied for broadband P MI/CQI information, subband CQI information and the RI information of reporting.
Wherein, B
WbCQIXThe bit number that the broadband CQI that expression calculates based on RI is comprised, B
WbPMIXThe bit number that broadband P MI comprised that expression calculates based on RI, B
SubCQIXThe bit number that the subband CQI that expression calculates based on RI is comprised, B
SubPMIXThe number of the sub-band channel information that the bit number that the subband PMI that expression calculates based on RI is comprised, K are represented to be comprised in the PUCCH resource, K is the parameter of set point or high-rise configuration, K is for more than or equal to 1 and be not more than the integer of subband number.
Referring to Figure 19, a kind of channel information dispensing device that the embodiment of the invention provides comprises:
Channel information is confirmed unit 11, is used for according to the down channel estimated value, need to confirm the channel information of transmission;
Transmitting element 12 is used for to the network side channel information;
Wherein, said channel information comprises sub-band channel quality indication CQI, and said subband is through the corresponding resource of enhanced physical down control channel E-PDCCH is divided resulting subband.
Preferably, the resource that said E-PDCCH is corresponding comprises many parts resource, and every part resource is continuous on frequency domain, and on frequency domain, has between the each several part resource at interval, and each part resource is a subband.
Preferably, said channel information also comprises:
Subband pre-coding matrix indication PMI, broadband P MI, broadband CQI, subband positional information and/or order indication RI.
Preferably, the scope in said broadband is the total bandwidth of the corresponding resource of the E-PDCCH of downlink system bandwidth or high-rise configuration.
Preferably, said subband positional information, by the number value of the pairing subband of feedback sub-band channel information in the corresponding scope of resource of E-PDCCH.
Preferably, when said channel information also comprised RI, the value of RI was less than or equal to N, N for preset greater than 1 integer.
Preferably, the value of said N is 2.
Preferably, said channel condition information also comprises the PMI that calculates based on Rank=1 and CQI and the PMI and the CQI that calculate based on Rank=2.
Preferably, said transmitting element passes through Physical Uplink Control Channel PUCCH cycle channel information according to the cycle and the sub-frame offset of high level configuration at delivery time.
Preferably, said transmitting element sends one or more subband CQI at delivery time through the PUCCH cycle according to the frequency domain order of each subband at every turn, sends up to all subband CQI to finish.
Preferably, a kind of channel information dispensing device that the embodiment of the invention provides is UE.
In sum; The embodiment of the invention takies the characteristics that running time-frequency resource is few, need low Rank and high feedback accuracy when transmitting to the PDCCH that strengthens; A kind of channel information sending method and device are provided,, need have confirmed the channel information of transmission according to the down channel estimated value; To the network side channel information, wherein, said channel information comprises sub-band channel quality indication CQI, thereby can support the PDCCH that strengthens to transmit better.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of the embodiment of complete hardware embodiment, complete software implementation example or combination software and hardware aspect.And the present invention can be employed in the form that one or more computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) that wherein include computer usable program code go up the computer program of implementing.
The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out through the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in ability vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work; Make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device; Make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of on computer or other programmable devices, carrying out is provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (30)
1. a channel information sending method is characterized in that, this method comprises:
According to the down channel estimated value, need to confirm the channel information of transmission;
To the network side channel information, wherein, said channel information comprises sub-band channel quality indication CQI, and said subband is through the corresponding resource of enhanced physical down control channel E-PDCCH is divided resulting subband.
2. method according to claim 1 is characterized in that, the resource that said E-PDCCH is corresponding comprises many parts resource, and every part resource is continuous on frequency domain, and on frequency domain, has between the each several part resource at interval, and each part resource is a subband.
3. method according to claim 1 and 2 is characterized in that, said channel information also comprises:
Subband pre-coding matrix indication PMI, broadband P MI, broadband CQI, subband positional information and/or order indication RI.
4. method according to claim 3 is characterized in that, the scope in said broadband is the total bandwidth of the corresponding resource of the E-PDCCH of downlink system bandwidth or high-rise configuration.
5. method according to claim 3 is characterized in that, said subband positional information, by the number value of the pairing subband of feedback sub-band channel information in the corresponding scope of resource of E-PDCCH.
6. method according to claim 3 is characterized in that, said subband positional information is selected sets of subbands number value in all optional sets of subbands scopes in the corresponding scope of resource of E-PDCCH.
7. method according to claim 3 is characterized in that, when said channel information also comprised RI, the value of RI was less than or equal to N, N for preset greater than 1 integer.
8. method according to claim 7 is characterized in that, the value of said N is 2.
9. method according to claim 8 is characterized in that, said channel condition information also comprises the PMI that calculates based on Rank=1 and CQI and the PMI and the CQI that calculate based on Rank=2.
10. method according to claim 7 is characterized in that, said channel information also comprises PMI and the CQI that calculates based on the RI that is reported.
11. method according to claim 1 and 2 is characterized in that, and is said to the network side channel information, comprising:
According to the cycle and the sub-frame offset of high level configuration, pass through Physical Uplink Control Channel PUCCH cycle channel information at delivery time.
12. method according to claim 11 is characterized in that, said at delivery time through PUCCH cycle channel information, comprising:
According to the frequency domain order of each subband, send one or more subband CQI at delivery time through the PUCCH cycle at every turn, finish up to all subband CQI transmissions.
13. method according to claim 11; It is characterized in that; Adopt form shown in the following table; The channel information that sends through the PUCCH cycle comprises 2 kinds of Report Type reporting type; Be designated as reporting type e-0-3-1 and reporting type e-0-3-2 respectively, be respectively applied for broadband CQI and the subband CQI information of reporting:
Wherein, B
WbCQIThe bit number that the broadband CQI that expression calculates based on RI=1 is comprised, B
SubCQIThe number of the subband CQI that the bit number that the subband CQI that expression calculates based on RI=1 is comprised, K are represented to be comprised in the PUCCH resource, K is the parameter of set point or high-rise configuration, K is for more than or equal to 1 and be not more than the integer of subband number.
14. method according to claim 11; It is characterized in that; Adopt form shown in the following table; The channel information that sends through the PUCCH cycle comprises 2 kinds of Report Type reporting type; Be designated as reporting type e-1-3-1 and reporting type e-1-3-2 respectively; Be respectively applied for broadband P MI/CQI and the subband CQI information of reporting:
Wherein, B
WbCQIThe bit number that the broadband CQI that expression calculates based on RI=1 is comprised, B
WbPMIThe bit number that broadband P MI comprised that expression calculates based on RI=1, B
SubCQIThe number of the sub-band channel information that the bit number that the subband CQI that expression calculates based on RI=1 is comprised, K are represented to be comprised in the PUCCH resource, K is the parameter of set point or high-rise configuration, K is for more than or equal to 1 and be not more than the integer of subband number.
15. method according to claim 11; It is characterized in that; Adopt form shown in the following table; The channel information that sends through the PUCCH cycle comprises 3 kinds of Report Type reporting type; Be designated as reporting type e-1-9-1, reporting type e-1-9-2 and reporting type e-1-9-3 respectively, be respectively applied for broadband P MI/CQI information, subband CQI information and the RI information of reporting:
Wherein, B
WbCQIXThe bit number that the broadband CQI that expression calculates based on RI is comprised, B
WbPMIXThe bit number that broadband P MI comprised that expression calculates based on RI, B
SubCQIXThe number of the sub-band channel information that the bit number that the subband CQI that expression calculates based on RI is comprised, K are represented to be comprised in the PUCCH resource, K is the parameter of set point or high-rise configuration, K is for more than or equal to 1 and be not more than the integer of subband number.
16. a channel information dispensing device is characterized in that, this device comprises:
Channel information is confirmed the unit, is used for according to the down channel estimated value, need to confirm the channel information of transmission;
Transmitting element is used for to the network side channel information;
Wherein, said channel information comprises sub-band channel quality indication CQI, and said subband is through the corresponding resource of enhanced physical down control channel E-PDCCH is divided resulting subband.
17. device according to claim 16 is characterized in that, the resource that said E-PDCCH is corresponding comprises many parts resource, and every part resource is continuous on frequency domain, and on frequency domain, has between the each several part resource at interval, and each part resource is a subband.
18., it is characterized in that said channel information also comprises according to claim 16 or 17 described devices:
Subband pre-coding matrix indication PMI, broadband P MI, broadband CQI, subband positional information and/or order indication RI.
19. device according to claim 18 is characterized in that, the scope in said broadband is the total bandwidth of the corresponding resource of the E-PDCCH of downlink system bandwidth or high-rise configuration.
20. device according to claim 18 is characterized in that, said subband positional information, by the number value of the pairing subband of feedback sub-band channel information in the corresponding scope of resource of E-PDCCH.
21. device according to claim 18 is characterized in that, said subband positional information is selected sets of subbands number value in all optional sets of subbands scopes in the corresponding scope of resource of E-PDCCH.
22. device according to claim 18 is characterized in that, when said channel information also comprised RI, the value of RI was less than or equal to N, N for preset greater than 1 integer.
23. device according to claim 22 is characterized in that, the value of said N is 2.
24. device according to claim 23 is characterized in that, said channel condition information also comprises the PMI that calculates based on Rank=1 and CQI and the PMI and the CQI that calculate based on Rank=2.
25. device according to claim 22 is characterized in that, said channel information also comprises PMI and the CQI that calculates based on the RI that is reported.
26., it is characterized in that said transmitting element passes through Physical Uplink Control Channel PUCCH cycle channel information according to the cycle and the sub-frame offset of high level configuration at delivery time according to claim 16 or 17 described devices.
27. device according to claim 26 is characterized in that, said transmitting element sends one or more subband CQI at delivery time through the PUCCH cycle according to the frequency domain order of each subband at every turn, sends up to all subband CQI to finish.
28. device according to claim 26; It is characterized in that; Said transmitting element adopts form shown in the following table; The channel information that sends through the PUCCH cycle comprises 2 kinds of Report Type reporting type; Be designated as reporting type e-0-3-1 and reporting type e-0-3-2 respectively, be respectively applied for broadband CQI and the subband CQI information of reporting:
Wherein, B
WbCQIThe bit number that the broadband CQI that expression calculates based on RI=1 is comprised, B
SubCQIThe number of the subband CQI that the bit number that the subband CQI that expression calculates based on RI=1 is comprised, K are represented to be comprised in the PUCCH resource, K is the parameter of set point or high-rise configuration, K is for more than or equal to 1 and be not more than the integer of subband number.
29. device according to claim 26; It is characterized in that; Said transmitting element adopts form shown in the following table; The channel information that sends through the PUCCH cycle comprises 2 kinds of Report Type reporting type; Be designated as reporting type e-1-3-1 and reporting type e-1-3-2 respectively; Be respectively applied for broadband P MI/CQI and the subband CQI information of reporting:
Wherein, B
WbCQIThe bit number that the broadband CQI that expression calculates based on RI=1 is comprised, B
WbPMIThe bit number that broadband P MI comprised that expression calculates based on RI=1, B
SubCQIThe number of the sub-band channel information that the bit number that the subband CQI that expression calculates based on RI=1 is comprised, K are represented to be comprised in the PUCCH resource, K is the parameter of set point or high-rise configuration, K is for more than or equal to 1 and be not more than the integer of subband number.
30. device according to claim 26; It is characterized in that; Said transmitting element adopts form shown in the following table; The channel information that sends through the PUCCH cycle comprises 3 kinds of Report Type reporting type; Be designated as reporting type e-1-9-1, reporting type e-1-9-2 and reporting type e-1-9-3 respectively, be respectively applied for broadband P MI/CQI information, subband CQI information and the RI information of reporting:
Wherein, B
WbCQIXThe bit number that the broadband CQI that expression calculates based on RI is comprised, B
WbPMIXThe bit number that broadband P MI comprised that expression calculates based on RI, B
SubCQIXThe number of the sub-band channel information that the bit number that the subband CQI that expression calculates based on RI is comprised, K are represented to be comprised in the PUCCH resource, K is the parameter of set point or high-rise configuration, K is for more than or equal to 1 and be not more than the integer of subband number.
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| CN109787729B (en) * | 2017-11-14 | 2022-02-01 | 中国电信股份有限公司 | Resource multiplexing method, system and computer readable storage medium |
| CN109787729A (en) * | 2017-11-14 | 2019-05-21 | 中国电信股份有限公司 | Resource multiplexing method, system and computer readable storage medium |
| CN108990163A (en) * | 2018-08-29 | 2018-12-11 | 创新维度科技（北京）有限公司 | Downlink channel condition feedback method, base station, user equipment and storage medium |
| CN108990163B (en) * | 2018-08-29 | 2023-06-02 | 创新维度科技（北京）有限公司 | Downlink channel state feedback method, base station, user equipment and storage medium |
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