CN102469499B - A kind of determination method and apparatus of reporting source of channel state information desired parameters - Google Patents
A kind of determination method and apparatus of reporting source of channel state information desired parameters Download PDFInfo
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- CN102469499B CN102469499B CN201010547364.3A CN201010547364A CN102469499B CN 102469499 B CN102469499 B CN 102469499B CN 201010547364 A CN201010547364 A CN 201010547364A CN 102469499 B CN102469499 B CN 102469499B
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Abstract
The invention discloses a kind of determination method and apparatus of reporting source of channel state information desired parameters.Comprise: the moment of user equipment to report channel condition information is determined in base station; Reporting source of channel state information desired parameters is determined by the moment determined in base station.The present invention can avoid the feedback error that occurs in reporting source of channel state information process or performance loss problem.
Description
Technical field
The present invention relates to wireless communication technology, particularly a kind of determination method and apparatus of reporting source of channel state information desired parameters.
Background technology
MIMO (Multiple-Input Multiple-Output, multiple-input and multiple-output) in system, if transmitter can know channel information in some way, just can be optimized transmission signal according to the characteristic of channel, thus improve the quality of reception and reduce the requirement to Receiver Complexity.Generally adopt the mode feedback channel information of quantized channel information in systems in practice, to reduce feedback overhead, improve system transfers efficiency.
Implicit expression CSI (Channel State Information, the channel condition information) feedback method based on code book is adopted in LTE (Long Term Evolution, Long Term Evolution) system.In order to realize the periodic feedback of channel condition information, define 4 kinds of dissimilar report contents altogether:
Class1 is reported: in order to CQI (Channel Quality Indication, the channel quality indicates) feedback supporting UE (User Equipment, subscriber equipment) to select subband;
Type 2 is reported: in order to support broadband CQI and broadband P MI (Precooding Matrix Indicator, pre-coding matrix indicates) feedback;
Type 3 is reported: in order to support RI (Rank Indication, order indicates) feedback;
Type 4 is reported: in order to support broadband CQI feedback.
The implicit expression CSI feedback method based on code book is still adopted in LTE-A (Long Term Evolution-Advanced, long-term evolution upgrading) system.UE based on pilot measurement down channel, and according to the data fluxion RI value that himself receiving area adjustment normal direction base station reports down link to support) and the label PMI of pre-coding matrix, while UE also need the channel quality CQI reporting each code word.Wherein, in the computational process of CQI, UE supposes the RI/PMI that base station employs it and recommends.In order to improve the feedback accuracy of PMI, in LTE-A, a pre-coding matrix (W) was formed by the merging of two matrixes (W1 and W2), W1 and W2 is respectively by two PMI (the first PMI value, corresponding to W1 instruction and the second PMI value, corresponding to W2 instruction) instruction.Wherein, continue to use the code book in LTE R8/9 version below 2 antenna ports and 4 antenna ports, W1 is defined as unit matrix, and the first PMI value comprises 0 bit information without the need to feedback.
In LTE-A standard, PUCCH 2-1 (PUCCH:Physical UplinkControl Channel, the Physical Uplink Control Channel) feedback model of expansion will be introduced.In order to realize the periodic feedback of broadband P MI, broadband CQI and/or subband PMI, subband CQI.The PUCCH 2-1 feedback model of expansion will realize following function:
1, pre-coding matrix W determines based on the report content of the RI report reported recently and 3 subframes.
2, the form of 3 reports is respectively:
1) 1 (Report 1): RI and PTI (precoder type indication, precoding type indicates) is reported;
2) 2 (Report 2) are reported:
If PTI=0, then report W1, also, the first PMI value;
If PTI=1, then reporting broadband CQI and broadband W2, is also broadband second PMI value.
3) 3 (Report 3) are reported:
If PTI=0, then reporting broadband CQI and broadband W2, is also broadband second PMI value;
If PTI=1, then reporting subband CQI and subband W2, is also subband second PMI value.
3, for 2 antenna ports and 4 antenna ports, then PTI be configured to 1 all the time and without the need to instruction.
The content of PTI is determined by UE, and by indicating different PTI, UE can determine the content of report 2 and report 3.
There is the report of 4 types in above feedback model altogether, for convenience of period called after type A, B, C and D respectively, be specifically respectively:
Type A reports: in order to support subband CQI and subband W2 (being also subband second PMI value) feedback;
Type B is reported: in order to support broadband CQI and broadband W2 (being also broadband second PMI value) feedback;
Type C is reported: in order to support W1 (being also the first PMI value) feedback;
Type D reports: in order to support that RI and PTI reports.
Above 4 kinds of Report Types are all different from the 4 class Report Types defined in LTE R8/9.
Due under the PUCCH 2-1 pattern of expansion, there is multiple new Report Type, and report moment and report cycle not yet clear and definite at present for these Report Types, incomplete to the definition of this information feedback pattern in standard.Report moment and report cycle for expansion PUCCH 2-1, a kind of period assignment scheme that current many companies support is:
1, the cycle of Report 3 is N
c.
2, the cycle of Report 2 is relevant with PTI value:
If PTI=0, then the cycle of Report 2 be the M in Report 3 cycle doubly, M is positive integer.
If PTI=1, then the cycle of Report 2 be the H in Report 3 cycle doubly, H=JK+1, J represent subband number, and K is the parameter that can join, K ∈ { 1,2,3,4}.
3, the cycle of Report 1 is the M in Report 2 cycle
rIh doubly.
Concrete, the moment definition that reports of each report is:
1, the moment that reports of Report 2 and Report 3 is satisfied
subframe, wherein N
cand N
oFFSETfor high-rise configuration parameter, N
cfor the report cycle of Report 3, N
oFFSETfor the sub-frame offset that Report 2 and Report 3 reports, above each parameter all in units of subframe, n
ffor frame number, n
sfor timeslot number, mod represents and gets remainder operation.
1) if PTI=0:
The moment that reports of Report 2 is:
Meet
subframe, wherein M is high-rise configuration parameter, represents that the report cycle of Report 2 compares the multiple of Report 3 report cycle.
The moment that reports of Report 3 is:
Meet
and
subframe.
2) if PTI=1:
The moment that reports of Report 2 is:
Meet
subframe, wherein H=JK+1, wherein J is bandwidth hop count (BP, bandwidth part), and K is high-rise configuration parameter, represents that Report 3 (subband CQI and subband the 2nd PMI) circulates the number of times reported.
The moment that reports of Report 3 is:
Meet
and
subframe.
2, the moment that reports of Report 1 is:
Meet
subframe, wherein M
rIand N
oFFSET, RIfor high-rise configuration parameter, M
rIthe multiple of broadband CQI and broadband the 2nd PMI report cycle when representing that the report cycle of RI with PTI compares PTI=1, N
oFFSET, RIrepresent the sub-frame offset that RI reports.
Fig. 1 be expansion PUCCH 2-1 report moment and report cycle scheme schematic diagram, with J=2, K=1, M
rI=1, M=2 is example, reports the schematic diagram in moment as shown in Figure 1 when PTI=0 and PTI=1.
As we can see from the figure, when PTI=0, to report (namely as time type D, RI and PTI) be time zero, some type B report (i.e. broadband CQI and broadband the 2nd PMI) in Type C report (namely, one PMI) report before, some type B report (i.e. broadband CQI and broadband the 2nd PMI) report after Type C report (that is, a PMI).
The deficiencies in the prior art are: the feedback of current channel condition information and obtain manner exist feedback error or the bad problem of feedback performance.
Summary of the invention
Technical problem solved by the invention there are provided a kind of determination method and apparatus of reporting source of channel state information desired parameters.
Provide a kind of defining method of reporting source of channel state information desired parameters in the embodiment of the present invention, comprise the steps:
The moment of UE reporting status information of channel is determined in base station;
Reporting source of channel state information desired parameters is determined by the moment determined in base station.
Provide a kind of base station in the embodiment of the present invention, comprising:
Moment determination module, for determining the moment of UE reporting status information of channel;
Parameter determination module, for determining reporting source of channel state information desired parameters by the moment determined.
Provide a kind of subscriber equipment in the embodiment of the present invention, comprising:
Receiver module, reports desired parameters for receiving channel state information;
Reporting module, for according to described reporting source of channel state information desired parameters reporting status information of channel.
Beneficial effect of the present invention is as follows:
The technical scheme that theres is provided by the embodiment of the present invention is implemented, can the reporting of complete channel condition information, reception mechanism.
Accompanying drawing explanation
Fig. 1 be expand PUCCH 2-1 in the embodiment of the present invention report moment and report cycle scheme schematic diagram;
Fig. 2 is the defining method implementing procedure schematic diagram of reporting source of channel state information desired parameters in the embodiment of the present invention;
Fig. 3 is architecture of base station schematic diagram in the embodiment of the present invention;
Fig. 4 is user device architecture schematic diagram in the embodiment of the present invention.
Embodiment
Inventor notices in invention process:
For the scheme shown in Fig. 1, the feedback of current channel condition information and obtain manner there is feedback error or the bad reason of feedback performance is:
Due to Report 1 (namely, type D reports, also i.e. RI and PTI) cycle only relevant with the Report 2 (that is, type B report, is also broadband CQI and broadband the 2nd PMI) during PTI=1, Report when being PTI=1 2 (, type B is reported, also i.e. broadband CQI and broadband the 2nd PMI) integral multiple of report cycle, and with during PTI=0 Report 2 (, Type C is reported, is also a PMI) irrelevant.Therefore, when PTI=0, adjacent twice Report 1 (that is, type D reports, is also RI and PTI) reported between the moment possibly cannot complete integer time Report 2 (that is, Type C report is also a PMI) report cycle.When PTI=0, twice Report 1 (that is, type D report, also i.e. RI and PTI) report between the moment and cannot complete integer time Report 2 (namely, Type C is reported, is also a PMI) report cycle, in any case configuration sub-frame offset N
oFFSET, RIand N
oFFSETthere is following phenomenon in capital: with current type D report reporting for starting point, some type B report (i.e. broadband CQI and broadband the 2nd PMI) in Type C report (namely, one PMI) report before, some type B report (i.e. broadband CQI and broadband the 2nd PMI) report after Type C report (that is, a PMI).
Because the calculating of broadband CQI and broadband the 2nd PMI must be carried out based on PMI and RI, if with current type D report reporting for starting point, Type C is not had to report before type B report, as shown in the X place type B report in Fig. 1, starting point is reported as with the D at W place, a PMI is not had to report before it, and the last time the one PMI before it reports the Type C into Y place to report, first PMI value at Y place reports (i.e. the type D report at Z place) to carry out calculating based on recent RI before; Before it, the last RI reports the type D into W place to report.If the RI value at Z place is different with the RI value at W place, if it is skimble-skamble that the obvious RI value based on a PMI and W place at Y place calculates broadband CQI and broadband the 2nd PMI.
In order to make the calculating of the broadband CQI at X place and broadband the 2nd PMI meaningful, a kind of method reports (the RI value being also W place) based on the last RI value reported before, gives tacit consent to the first PMI value (UE and base station are all clearly known) under this RI value.Then calculating broadband CQI and broadband second PMI value, i.e. type B based on the last RI value reported and the first PMI value given tacit consent to before, is also the content of Report3.Such process reason is feasible, but current channel space information can not be reflected, thus influential system performance due to the first given tacit consent to PMI value.
Visible, cycle multiple configuration parameter do not used restraint thus cause reporting of when PTI=0 broadband the 2nd PMI to cause feedback error or the bad problem of feedback performance early than a PMI gives the correct time.
Based on above-mentioned analysis, when proposing in the embodiment of the present invention by constraining in PTI=0, the one PMI must report the technical scheme solving above problem before the 2nd PMI, was described the specific embodiment of the present invention below in conjunction with accompanying drawing.
In declarative procedure, to be described from the enforcement of UE and base station side respectively, also can implement to be described to the cooperation of the two, but this does not also mean that the two must coordinate enforcement, in fact, when UE and base station separate implement time, its also solve separately respectively in UE side, base station side Problems existing, when just the two is combined, better technique effect can be obtained.
In declarative procedure, will first the execution mode of the determination of reporting source of channel state information desired parameters be described, then to report accordingly and the execution mode of reception programme is described.
Fig. 2 is the defining method implementing procedure schematic diagram of reporting source of channel state information desired parameters, as shown in the figure, can comprise the steps:
Step 201, base station determine the moment of UE reporting status information of channel;
Step 202, base station determine reporting source of channel state information desired parameters by the moment determined.
In concrete enforcement, base station determines that can there be two kinds of modes in the moment of reporting status information of channel:
If adjacent twice RI reports and existingly between the moment report the moment of a PMI also to have the moment reporting the 2nd PMI, then after the moment reporting RI, the moment of first time the one PMI is reported to be not later than the moment reporting first time the 2nd PMI.
Two, the report cycle of RI is the integral multiple of the report cycle of a PMI;
Or the report cycle of Report 1 is the integral multiple of the report cycle of Report 2, wherein, Report 1 comprises RI, and Report 2 comprises the first PMI value.
In concrete enforcement, the report cycle of RI is the integral multiple of a PMI report cycle, can be specially:
When the report cycle of RI and PTI is M
rI(JK+1) N
c, a PMI report cycle is MN
ctime, then M meets (M
rI(JK+1)) mod M=0, wherein, N
crepresent the report cycle of subband CQI and subband the 2nd PMI, the report cycle of broadband CQI and broadband the 2nd PMI when being also simultaneously PTI=0, in units of subframe, J represents bandwidth hop count; K is the parameter that can join, and represents the cycle-index that subband CQI and subband the 2nd PMI reports continuously; (JK+1) N
crepresent the report cycle of broadband CQI and broadband the 2nd PMI during PTI=1; M
rIthe multiple of broadband CQI and broadband the 2nd PMI report cycle when representing that the report cycle of RI with PTI compares PTI=1; When M represents PTI=0, the one PMI report cycle compares the multiple of broadband CQI and broadband the 2nd PMI report cycle, and mod represents and gets remainder operation.
In enforcement, as K ∈ { 1,2,3,4}, J ∈ { 1,2,3,4}, M
rI∈ when 1,2,4,8,16,32}, H=JK+1, HM
rI, relation value in M according to the form below:
Table 1
In enforcement, can further include:
The described M that base station will be determined
rI, M, K inform UE.
This parameter is informed the object of UE is UE is reported according to this parameter.
In enforcement, can further include:
The offset parameter of UE reporting status information of channel is determined in base station, wherein, and N
oFFSET, RIand N
oFFSETmeet: for meeting (t-N arbitrarily
oFFSET-N
oFFSET, RI) mod (HN
cm
rI, then there is x (1≤x≤N in the nonnegative integer t of)=0
c) meet (t-N
oFFSET-N
oFFSET, RI+ x) mod (MN
c)=0, wherein, N
oFFSET, RIrepresent the sub-frame offset that RI reports, N
oFFSETbe the sub-frame offset that a PMI and the 2nd PMI report, H=JK+1.
By such scheme, also namely at the integral multiple that the report cycle of RI is the report cycle of a PMI, and N
oFFSET, RIand N
oFFSETmeet above relation time, can ensure when PTI=0, a PMI (that is, Report 2, also i.e. Type C report) reports always before broadband CQI and broadband the 2nd PMI (that is, Report 3, also namely type B is reported) reports.
And in the solution of the present invention is implemented, then:
Base station retrains below considering when choosing period assignment parameter M: (M
rI(JK+1)) modM=0.
Offset parameter N is being chosen in base station
oFFSET, RIand N
oFFSETin time, is considered to retrain below:
For meeting (t-N arbitrarily
oFFSET-N
oFFSET, RI) mod (HN
cm
rI, then there is x in the nonnegative integer t of)=0,1≤x≤N
cmeet (t-N
oFFSET-N
oFFSET, RI+ x) mod (MN
c)=0.
The selectable period assignment parameter M in base station meets constraint: only at M
rI(JK+1) value within the scope of factor, such as:
If K is ∈ { 1,2,3,4}, J ∈ { 1,2,3,4}, M
rI∈ 1,2,4,8,16,32}, then JK+1=H ∈ 2,3,4,5,7,9,10,13,17}, and M be greater than 1 positive integer.HM
rIpossible value be:
2，3，4，5，6，7，8，9，10，12，13，14，16，17，18，20，24，26，28，32，34，36，40，48，52，56，64，68，72，80，96，104，112，128，136，144，160，208，224，272，288，320，416，544。
Then the value of M is the factor of above numerical value, then now the possible value of M is:
2，3，4，5，6，7，8，9，10，12，13，14，16，17，18，20，24，26，28，32，34，36，40，48，52，56，64，68，72，80，96，104，112，128，136。
Further, as K ∈ { 1,2,3,4}, J ∈ { 1,2,3,4}, M
rI∈ when 1,2,4,8,16,32}, H=JK+1, HM
rI, relation value in M according to the form below:
That is, when M gets certain value, HM
rIonly to get the value corresponded in table; And HM
rIwhen getting certain value, M also can only get the value corresponded in table.Such as, M=9, then HM
rIcan only from set { value in 9,18,36,72,144,288}; If HM
rI=9, M can only from set { value in 3,9}.The side-play amount collocation method configuration offset parameter that further employing this patent provides, namely can realize good feedback performance.
Consider that the report cycle of RI is the integral multiple of the report cycle of a PMI, thus only allow M to get HM
rIfactor.Such as K ∈ { 1,2,3,4}, J ∈ { 1,2,3,4}, M
rI∈ { 1,2,4,8,16,32}, H=JK+1, then HM
rIpossible value be:
2，3，4，5，6，7，8，9，10，12，13，14，16，17，18，20，24，26，28，32，34，36，40，48，52，56，64，68，72，80，96，104，112，128，136，144，160，208，224，272，288，320，416，544。
Then the value of M is the factor of above numerical value, and the possible value of M has 44 kinds of possibilities, is respectively:
2，3，4，5，6，7，8，9，10，12，13，14，16，17，18，20，24，26，28，32，34，36，40，48，52，56，64，68，72，80，96，104，112，128，136，144，160，208，224，272，288，320，416，544。
When by high-level signaling notice M parameter, only need embody the state of above-mentioned value, namely at least comprise 44 kinds of states.And need not design corresponding to the continuous N ∈ { signaling of 1,2, L, N}.Thus save high-level signaling expense.And in the implementation process of base station, base station reports desired parameters also can realize good feedback performance by mode one or two configuration provided by the present invention.
In enforcement, can further include:
The described N that base station will be determined
oFFSET, RI, N
oFFSET, N
cinform UE.
This parameter is informed the object of UE is UE is reported according to this parameter.
Below the reception of channel condition information and the enforcement that reports are described.
UE determines the moment of reporting status information of channel; UE is by the moment reporting status information of channel determined.
Report in implementation process at channel condition information, the broadcast message that UE can send by receiving base station carry out certainty annuity bandwidth value, thus determines BP number J;
The high-level signaling that UE can send by receiving base station determines period assignment parameter K, M, M
rI, and, further can also determine offset parameter N
oFFSET, RIand N
oFFSET, N
c;
Then UE determines reporting the moment and reporting the moment to send the channel condition information of respective type corresponding of all kinds of channel condition information based on above parameter.
All kinds of channel condition information comprises RI, a PMI and the 2nd PMI, and this three category information reported in the different moment.By these parameters, the determined all kinds of channel condition information of UE report can realizing of moment: if adjacent twice RI reports an existing PMI between the moment also to have the 2nd PMI to report, then RI first have after reporting the moment first time the one PMI report, after have first time the 2nd PMI report.Below concrete mode is described.
In enforcement, UE can determine the moment of reporting status information of channel as follows:
UE receives the reporting source of channel state information desired parameters that base station is determined by method described in mode one or two;
UE is according to described reporting source of channel state information desired parameters reporting status information of channel.
The report cycle of RI is the integral multiple of the report cycle of a PMI; Or Report 2 report cycle is the factor of Report 1 report cycle, and wherein, Report 1 comprises RI, and Report 2 comprises the first PMI value.
In enforcement, the report cycle of RI is the integral multiple of the report cycle of a PMI, is specifically as follows:
When the report cycle of RI and PTI is M
rI(JK+1) N
c, a PMI report cycle is MN
ctime, then M meets (M
rI(JK+1)) mod M=0, wherein, N
crepresent the report cycle of subband CQI and subband the 2nd PMI, the report cycle of broadband CQI and broadband the 2nd PMI when being also simultaneously PTI=0, in units of subframe, J represents bandwidth hop count; K is the parameter that can join, and represents the cycle-index that subband CQI and subband the 2nd PMI reports continuously; (JK+1) N
crepresent the report cycle of broadband CQI and broadband the 2nd PMI during PTI=1; M
rIthe multiple of broadband CQI and broadband the 2nd PMI report cycle when representing that the report cycle of RI with PTI compares PTI=1; When M represents PTI=0, the one PMI report cycle compares the multiple of broadband CQI and broadband the 2nd PMI report cycle, and mod represents and gets remainder operation.
For the offset parameter of UE reporting status information of channel, N
oFFSET, RIand N
oFFSETmeet:
For meeting (t-N arbitrarily
oFFSET-N
oFFSET, RI) mod (HN
cm
rI, then there is x (1≤x≤N in the nonnegative integer t of)=0
c) meet (t-N
oFFSET-N
oFFSET, RI+ x) mod (MN
c)=0, wherein, N
oFFSET, RIrepresent the sub-frame offset that RI reports, N
oFFSETbe the sub-frame offset that a PMI and the 2nd PMI report, H=JK+1.
Then, UE is by the cycle received and offset parameter determination reporting source of channel state information desired parameters reporting.
Below the reception of channel condition information and the enforcement that reports are described.
The moment of receiving channel state information is determined in base station; Base station is by the reception channel condition information determined.
In the reception implementation process of channel condition information, base station can send broadcast message, comprising system bandwidth information, can determine BP number J thus;
Period assignment parameter K, M, M can also be determined in base station
rI, and, further can also determine offset parameter N
oFFSET, RIand N
oFFSET, N
c, and by sending high-level signaling notice UE;
Base station also can based on above parameter determine all kinds of channel condition information report the moment and at the corresponding channel condition information reporting reception respective type.
All kinds of channel condition information comprises RI, a PMI and the 2nd PMI, and this three category information reported in the different moment.By these parameters, the determined all kinds of channel condition information in base station report can realizing of moment, if adjacent twice RI reports an existing PMI between the moment also to have the 2nd PMI to report, then RI first have after reporting the moment first time the one PMI report, after have first time the 2nd PMI report.Below concrete mode is described.
In enforcement, base station can determine the moment of reporting status information of channel as follows:
The report cycle of RI is the integral multiple of the report cycle of a PMI; Or Report 2 report cycle is the factor of Report 1 report cycle, and wherein, Report 1 comprises RI, and Report 2 comprises the first PMI value.
In enforcement, the report cycle of RI is the integral multiple of the report cycle of a PMI, is specifically as follows:
When the report cycle of RI and PTI is M
rI(JK+1) N
c, a PMI report cycle is MN
ctime, then M meets (M
rI(JK+1)) mod M=0, wherein, N
crepresent the report cycle of subband CQI and subband the 2nd PMI, the report cycle of broadband CQI and broadband the 2nd PMI when being also simultaneously PTI=0, in units of subframe, J represents bandwidth hop count; K is the parameter that can join, and represents the cycle-index that subband CQI and subband the 2nd PMI reports continuously; (JK+1) N
crepresent the report cycle of broadband CQI and broadband the 2nd PMI during PTI=1; M
rIthe multiple of broadband CQI and broadband the 2nd PMI report cycle when representing that the report cycle of RI with PTI compares PTI=1; When M represents PTI=0, the one PMI report cycle compares the multiple of broadband CQI and broadband the 2nd PMI report cycle, and mod represents and gets remainder operation.
For the offset parameter of UE reporting status information of channel, N
oFFSET, RIand N
oFFSETmeet:
For meeting (t-N arbitrarily
oFFSET-N
oFFSET, RI) mod (HN
cm
rI, then there is x (1≤x≤N in the nonnegative integer t of)=0
c) meet (t-N
oFFSET-N
oFFSET, RI+ x) mod (MN
c)=0, wherein, N
oFFSET, RIrepresent the sub-frame offset that RI reports, N
oFFSETbe the sub-frame offset that a PMI and the 2nd PMI report, H=JK+1.
In the embodiment of above-mentioned base station and UE, when being by constraining in PTI=0, the one PMI must solve problem before the 2nd PMI reports.Report 2 report cycle when concrete scheme can be constraint PTI=0 is the factor of Report 1 report cycle, and further, the integral multiple of Report 2 report cycle when can be PTI=0 by the report cycle of guarantee Report1 solves; When multiple is M, M meets (M
rI(JK+1)) modM=0; Solved by reasonable disposition sub-frame offset, concrete scheme can be constraint N again
oFFSET, RIand N
oFFSETit is made to meet:
For meeting (t-N arbitrarily
oFFSET-N
oFFSET, RI) mod (HN
cm
rI, then there is x (1≤x≤N in the nonnegative integer t of)=0
c) meet (t-N
oFFSET-N
oFFSET, RI+ x) mod (MN
c)=0, wherein, N
oFFSET, RIrepresent the sub-frame offset that RI reports, N
oFFSETbe the sub-frame offset that a PMI and the 2nd PMI report, H=JK+1.
Can ensure when PTI=0 by such scheme, a PMI (that is, Report 2, also i.e. Type C report) reports always before broadband CQI and broadband the 2nd PMI (that is, Report 3, also namely type B is reported) reports.
Based on same inventive concept, a kind of subscriber equipment, base station is additionally provided in the embodiment of the present invention, the principle of dealing with problems due to these equipment is similar to the defining method of reporting source of channel state information desired parameters, therefore the enforcement of these equipment see the enforcement of method, can repeat part and repeats no more.
Fig. 3 is architecture of base station schematic diagram, as shown in the figure, can comprise in base station:
Moment determination module 301, for determining the moment of UE reporting status information of channel;
Parameter determination module 302, for determining reporting source of channel state information desired parameters by the moment determined.
In enforcement, moment determination module can also be further used for the moment determining reporting status information of channel as follows: if adjacent twice RI reports and existingly between the moment report the moment of a PMI also to have the moment reporting the 2nd PMI, then after the moment reporting RI, the moment of first time the one PMI is reported to be not later than the moment reporting first time the 2nd PMI.
In enforcement, moment determination module can also be further used for the moment determining reporting status information of channel as follows: the report cycle of RI is the integral multiple of the report cycle of a PMI; Or the report cycle of Report 1 is the integral multiple of the report cycle of Report 2, wherein, Report 1 comprises RI, and Report 2 comprises the first PMI value.
In enforcement, moment determination module can also be further used for the moment determining reporting status information of channel as follows: the report cycle of RI is that the integral multiple of a PMI report cycle is specially: when the report cycle of RI and PTI is M
rI(JK+1) N
c, a PMI report cycle is MN
ctime, then M meets (M
rI(JK+1)) mod M=0, wherein, N
crepresent the report cycle of subband CQI and subband the 2nd PMI, the report cycle of broadband CQI and broadband the 2nd PMI when being also simultaneously PTI=0, in units of subframe, J represents bandwidth hop count; K is the parameter that can join, and represents the cycle-index that subband CQI and subband the 2nd PMI reports continuously; (JK+1) N
crepresent the report cycle of broadband CQI and broadband the 2nd PMI during PTI=1; M
rIthe multiple of broadband CQI and broadband the 2nd PMI report cycle when representing that the report cycle of RI with PTI compares PTI=1; When M represents PTI=0, the one PMI report cycle compares the multiple of broadband CQI and broadband the 2nd PMI report cycle, and mod represents and gets remainder operation.
In enforcement, parameter determination module can also be further used for as K ∈ { 1,2,3,4}, J ∈ { 1,2,3,4}, M
rI{ when 1,2,4,8,16,32}, H=JK+1, the relation according to the form below is to HM for ∈
rI, M value:
In enforcement, can further include in base station:
First sending module, for the described M that will determine
rI, M, K inform UE.
In enforcement, can further include in base station:
Side-play amount module 303, for determining the offset parameter of UE reporting status information of channel, wherein, N
oFFSET, RIand N
oFFSETmeet: for meeting (t-N arbitrarily
oFFSET-N
oFFSET, RI) mod (HN
cm
rI, then there is x (1≤x≤N in the nonnegative integer t of)=0
c) meet (t-N
oFFSET-N
oFFSET, RI+ x) mod (MN
c)=0, wherein, N
oFFSET, RIrepresent the sub-frame offset that RI reports, N
oFFSETbe the sub-frame offset that a PMI and the 2nd PMI report, H=JK+1.
In enforcement, can further include in base station:
Second sending module, for the described N that will determine
oFFSET, RI, N
oFFSET, N
cinform UE.
In enforcement, can further include in base station:
Receiver module, for pressing reporting source of channel state information desired parameters receiving channel state information.
Fig. 4 is user device architecture schematic diagram, as shown in the figure, can comprise in UE:
Receiver module 401, reports desired parameters for receiving channel state information;
Reporting module 402, for according to described reporting source of channel state information desired parameters reporting status information of channel.
For convenience of description, each several part of the above device is divided into various module or unit to describe respectively with function.Certainly, the function of each module or unit can be realized in same or multiple software or hardware when implementing of the present invention.
As seen from the above-described embodiment, when reporting status information of channel, UE receives the broadcast message that base station sends, certainty annuity bandwidth value, thus determines BP number J; UE receives the high-level signaling that base station sends, and determines period assignment parameter K, M, M
rI, N
cwith offset parameter N
oFFSET, RIand N
oFFSET; UE determines reporting the moment and reporting the moment to send the channel condition information of respective type corresponding of all kinds of channel condition information based on above parameter.All kinds of channel condition information comprises RI, a PMI and the 2nd PMI, and this three category information reported in the different moment.
Wherein the feature in moment that reports of the determined all kinds of channel condition information of UE is, if adjacent twice RI reports an existing PMI between the moment also to have the 2nd PMI to report, then RI first have after reporting the moment first time the one PMI report, after have first time the 2nd PMI report.
When receiving channel state information, the broadcast message that base station sends, comprising system bandwidth information, can determine BP number J thus; Period assignment parameter K, M, M are determined in base station
rI, N
cwith offset parameter N
oFFSET, RIand N
oFFSETinformation, and send high-level signaling notice UE; Base station based on above parameter determine all kinds of channel condition information report the moment and at the corresponding channel condition information reporting reception respective type.All kinds of channel condition information comprises RI, a PMI and the 2nd PMI, and this three category information reported in the different moment.
Wherein, the feature in moment that reports of the determined all kinds of channel condition information in base station is: if adjacent twice RI reports an existing PMI between the moment also to have the 2nd PMI to report, then RI first have after reporting the moment first time the one PMI report, after have first time the 2nd PMI report.
Further, the feature of the determined period assignment parameter in base station is: (M
rI(JK+1)) mod M=0.
Further, the feature of the determined offset parameter in base station is: for meeting (t-N arbitrarily
oFFSET-N
oFFSET, RI) mod (HN
cm
rI, then there is x in the nonnegative integer t of)=0,1≤x≤N
cmeet (t-N
oFFSET-N
oFFSET, RI+ x) mod (MN
c)=0.
Further, the determined period assignment parameter M in base station can define by table 1.
The technical scheme provided by the embodiment of the present invention is implemented, also be, if adjacent twice RI reports an existing PMI between the moment also to have the 2nd PMI to report, then RI first has first time the one PMI to report after reporting the moment, after have first time the 2nd PMI report, can avoid because the 2nd PMI reports thus the feedback error caused or performance loss problem prior to a PMI.
Further, because high-level signaling designs based on to the inherence constraint of M value, therefore can saving signaling expense.Concrete, in LTE standard, K ∈ { 1,2,3,4}, J ∈ { 1,2,3,4}, M
rI∈ 1,2,4,8,16,32}, then JK+1=H ∈ 2,3,4,5,7,9,10,13,17}, and M be greater than 1 positive integer.HM
rIpossible value be:
2，3，4，5，6，7，8，9，10，12，13，14，16，17，18，20，24，26，28，32，34，36，40，48，52，56，64，68，72，80，96，104，112，128，136，144，160，208，224，272，288，320，416，544。
When the value of M is the factor of above numerical value, the possible value of M is:
2，3，4，5，6，7，8，9，10，12，13，14，16，17，18，20，24，26，28，32，34，36，40，48，52，56，64，68，72，80，96，104，112，128，136，144，160，208，224，272，288，320，416，544。
So, if do not consider to retrain the inherence of M value, the value that M value is possible is 2 ~ 544, needs the signaling of at least 10 bits to notify; But if consider to retrain the inherence of M value, the value that effective M value is possible is:
2，3，4，5，6，7，8，9，10，12，13，14，16，17，18，20，24，26，28，32，34，36，40，48，52，56，64，68，72，80，96，104，112，128，136，144，160，208，224，272，288，320，416，544。
Totally 44 kinds, can be realized by the signaling of 4 bits.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (16)
1. a defining method for reporting source of channel state information desired parameters, is characterized in that, comprises the steps:
The moment of reported by user equipment UE channel condition information is determined in base station, comprising: the report cycle of RI is the integral multiple of the report cycle of a PMI, is specially: when the report cycle of RI and precoding type instruction PTI is M
rI(JK+1) N
c, a PMI report cycle is MN
ctime, then M meets (M
rI(JK+1)) modM=0, wherein, N
crepresent the report cycle of sub-band channel quality instruction CQI and subband the 2nd PMI, the report cycle of broadband CQI and broadband the 2nd PMI when being also simultaneously PTI=0, in units of subframe, J represents bandwidth hop count; K is the parameter that can join, and represents the cycle-index that subband CQI and subband the 2nd PMI reports continuously; (JK+1) N
crepresent the report cycle of broadband CQI and broadband the 2nd PMI during PTI=1; M
rIthe multiple of broadband CQI and broadband the 2nd PMI report cycle when representing that the report cycle of RI with PTI compares PTI=1; When M represents PTI=0, the one PMI report cycle compares the multiple of broadband CQI and broadband the 2nd PMI report cycle, and mod represents and gets remainder operation;
Reporting source of channel state information desired parameters is determined by the moment determined in base station.
2. the method for claim 1, is characterized in that, base station determines the moment of reporting status information of channel as follows:
If adjacent twice order instruction RI reports existing first pre-coding matrix that reports between the moment to indicate the moment of PMI also to have the moment reporting the 2nd PMI, then after the moment reporting RI, the moment of first time the one PMI is reported to be not later than the moment reporting first time the 2nd PMI.
3. the method for claim 1, is characterized in that, as K ∈ { 1,2,3,4}, J ∈ { 1,2,3,4}, M
rI∈ when 1,2,4,8,16,32}, H=JK+1, HM
rI, relation value in M according to the form below:
4. method as claimed in claim 3, is characterized in that, comprise further:
The described M that base station will be determined
rI, M, K inform UE.
5. the method as described in as arbitrary in claim 1-4, is characterized in that, comprise further:
The offset parameter of UE reporting status information of channel is determined in base station, wherein, and N
oFFSET, RIand N
oFFSETmeet: for meeting (t-N arbitrarily
oFFSET-N
oFFSET, RI) mod (HN
cm
rI, then there is x (1≤x≤N in the nonnegative integer t of)=0
c) meet (t-N
oFFSET-N
oFFSET, RI+ x) mod (MN
c)=0, wherein, N
oFFSET, RIrepresent the sub-frame offset that RI reports, N
oFFSETbe the sub-frame offset that a PMI and the 2nd PMI report, H=JK+1.
6. method as claimed in claim 5, is characterized in that, comprise further:
The described N that base station will be determined
oFFSET, RI, N
oFFSET, N
cinform UE.
7. the method as described in as arbitrary in Claims 1-4, is characterized in that, comprise further:
Reporting source of channel state information desired parameters receiving channel state information is pressed in base station.
8. a report method for channel condition information, is characterized in that, comprises the steps:
UE receives as the reporting source of channel state information desired parameters as described in arbitrary in claim 1 to 6;
UE is according to described reporting source of channel state information desired parameters reporting status information of channel.
9. a base station, is characterized in that, comprising:
Moment determination module, for determining the moment of UE reporting status information of channel, comprising: the report cycle of RI is the integral multiple of the report cycle of a PMI, is specially: when the report cycle of RI and PTI is M
rI(JK+1) N
c, a PMI report cycle is MN
ctime, then M meets (M
rI(JK+1)) modM=0, wherein, N
crepresent the report cycle of subband CQI and subband the 2nd PMI, the report cycle of broadband CQI and broadband the 2nd PMI when being also simultaneously PTI=0, in units of subframe, J represents bandwidth hop count; K is the parameter that can join, and represents the cycle-index that subband CQI and subband the 2nd PMI reports continuously; (JK+1) N
crepresent the report cycle of broadband CQI and broadband the 2nd PMI during PTI=1; M
rIthe multiple of broadband CQI and broadband the 2nd PMI report cycle when representing that the report cycle of RI with PTI compares PTI=1; When M represents PTI=0, the one PMI report cycle compares the multiple of broadband CQI and broadband the 2nd PMI report cycle, and mod represents and gets remainder operation;
Parameter determination module, for determining reporting source of channel state information desired parameters by the moment determined.
10. base station as claimed in claim 9, it is characterized in that, moment determination module is further used for the moment determining reporting status information of channel as follows: if adjacent twice RI reports and existingly between the moment report the moment of a PMI also to have the moment reporting the 2nd PMI, then after the moment reporting RI, the moment of first time the one PMI is reported to be not later than the moment reporting first time the 2nd PMI.
11. base stations as claimed in claim 9, is characterized in that, parameter determination module is further used for as K ∈ { 1,2,3,4}, J ∈ { 1,2,3,4}, M
rI{ when 1,2,4,8,16,32}, H=JK+1, the relation according to the form below is to HM for ∈
rI, M value:
12. base stations as claimed in claim 11, is characterized in that, comprise further:
First sending module, for the described M that will determine
rI, M, K inform UE.
13. as arbitrary in claim 9 to 12 as described in base station, it is characterized in that, comprise further:
Side-play amount module, for determining the offset parameter of UE reporting status information of channel, wherein, N
oFFSET, RIand N
oFFSETmeet: for meeting (t-N arbitrarily
oFFSET-N
oFFSET, RI) mod (HN
cm
rI, then there is x (1≤x≤N in the nonnegative integer t of)=0
c) meet (t-N
oFFSET-N
oFFSET, RI+ x) mod (MN
c)=0, wherein, N
oFFSET, RIrepresent the sub-frame offset that RI reports, N
oFFSETbe the sub-frame offset that a PMI and the 2nd PMI report, H=JK+1.
14. base stations as claimed in claim 13, is characterized in that, comprise further:
Second sending module, for the described N that will determine
oFFSET, RI, N
oFFSET, N
cinform UE.
15. as arbitrary in claim 9 to 12 as described in base station, it is characterized in that, comprise further:
Receiver module, for pressing reporting source of channel state information desired parameters receiving channel state information.
16. 1 kinds of subscriber equipmenies, is characterized in that, comprising:
Receiver module, for receiving as the reporting source of channel state information desired parameters as described in arbitrary in claim 1 to 6;
Reporting module, for according to described reporting source of channel state information desired parameters reporting status information of channel.
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