CN102237957B - Channel state information reporting method, system and device - Google Patents
Channel state information reporting method, system and device Download PDFInfo
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Abstract
The invention discloses a channel state information reporting method, a channel state information reporting system and a channel state information reporting device, which are used for solving the problems of reduction in rank indication (RI) information reporting accuracy and loss of system flexibility caused by a precoding matrix indicator (PMI)-1 information reporting way adopted by the prior art. In the method, the independent reporting of PMI-1 information is realized by independently configuring the reporting period information and reporting time sequence offset information of PMI-1 information. In the realization ways provided by the embodiment of the invention, the PMI-1 information is not required to be multiplexed with other reporting parameter information, so the reporting accuracy of the other parameter information is improved; moreover, the reporting period of the PMI-1 information can be configured independently, so the system can be endowed with relatively higher flexibility.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of report method, system and device of channel condition information.
Background technology
In Point-to-Point Communication System, transmitter can be according to the channel condition information that obtains (Channel StateInformation, CSI) spatial characteristics to the modulation system, code rate and the signal power that send signal is optimized, thereby transmission signal and dissemination channel characteristic are complementary, and the reliability that can enhancing signal receives reduces receiving the requirement of algorithm complex.In multi-user system, transmitter can also be dispatched judgement according to the CSI that obtains simultaneously, thus the interference that improves system spectral efficiency and avoid the minizone.
At Long Term Evolution (Long-Term Evolution, LTE) evolution base station (evolvedNodeB among the R8/9 of system, eNB) can utilize channel reciprocity or according to subscriber equipment (User Equipment, UE) feedback is obtained the CSI of down channel, and UE is based on downlink physical shared channel (Physical DownlinkShared Channel, PDSCH) method that several main transmission mode is fed back has all adopted the implicit expression CSI feedback system based on code book.Wherein the pre-coding matrix of transmission mode 4,5,6 and transmission mode 8 identifies (Precoding Matrix Indicator, PMI) report in the pattern UE based on cell special reference (Cell-specific Reference Signal, CRS) measure down channel, and report CSI to eNB according to himself reception Processing Algorithm, this CSI that wherein reports comprises number of data streams sign (RankIndication, RI), the channel quality information of PMI and each code word (Channel Quality Indication, CQI).Wherein UE has used the RI of its recommendation and PMI to calculate definite to the CQI that eNB reports with hypothesis eNB.
Pre-coding scheme among the above-mentioned LTE R8/9 of system is applied to single user's application scenarios, and mobile cellular communication of future generation (Long Term Evolution-Advanced, LTE-Advanced) pre-coding scheme in the system is supported multi-user's scene, and the LTE-Advanced system requirements is under the prerequisite that keeps low feedback overhead, improve the CSI feedback accuracy as far as possible, therefore in the LTE-Advanced system, adopted based on dicode feedback scheme originally.
In based on dicode feedback scheme originally, CSI can be divided into comparatively stable long-term/bandwidth CSI and the short-term/frequency selectivity CSI with higher time/frequency characteristic.UE can adopt two code books respectively above-mentioned CSI to be quantized according to different feedback cycles, and feeds back corresponding PMI.Wherein, PMI-1 is used for reflecting long-term/broadband CSI to have higher spatial resolution, can be that unit feeds back with the bigger cycle and with bigger bandwidth.And PMI-2 is used to reflect the fast change part of CSI, is that unit also feeds back with lower feedback cycle with the subband.
In the LTE system, high level can configuration UE adopt Physical Uplink Control Channel (Physical UplinkControl Channel, PUCCH) carrying out periodicity reports and/or adopts Physical Uplink Shared Channel (Physical Uplink Shared Channel PUSCH) carries out reporting aperiodic.Wherein, the reporting information that UE adopts PUCCH to report is the reporttype combination of choosing from 4 kinds of reporting types (report type), and every kind of corresponding a kind of PUCCH of combination reports pattern (reporting mode), and this every kind PUCCH reporting mode also carries out semi-static configuration by high-level signaling.Table 1 is the relation between report type and the reporting mode in the LTE system.
Table 1
Because existing UE reports mechanism to design based on this structure of solid size, and is no longer suitable for this feedback scheme of dicode of LTE-Advanced system.For feedback PMI-1 information in this feedback scheme of dicode, the mode that can adopt PMI-1 information and RI information multiplexing to report in the prior art.But this reports mode will increase the equivalent code rate of RI information, thereby reduced the accuracy that RI information reports, and the mode that above-mentioned employing PMI-1 information and RI information multiplexing report, can't therefore lose the flexibility of system for PMI-1 information and RI information configuration report cycle independently.
Summary of the invention
In view of this, the method, system and device that the embodiment of the invention provides a kind of channel condition information to report in order to improving the accuracy that RI information reports in the mode that PMI-1 information reports, and improve system flexibility.
The report method of a kind of channel condition information that the embodiment of the invention provides comprises:
User equipment (UE) receives the configuration information that radio resource control RRC sends, comprise the report cycle information of long-term/bandwidth pre-coding matrix sign PMI-1 information in the wherein said configuration information and report timing off-set amount information, and described report cycle is for independently reporting the report cycle of described PMI-1 information;
Described UE is according to described report cycle information and report timing off-set amount information, determines to report the moment of described PMI-1 information;
The number of data streams sign RI information that described UE reports according to self judges whether to carry out reporting of PMI-1 information; If described RI information is greater than the RI threshold value of setting, then UE reports evolution base station eNB in the described moment of determining with channel quality information CQI information; Otherwise described UE reports eNB in the described moment of determining with PMI-1 information.
The reporting system of a kind of channel condition information that the embodiment of the invention provides comprises:
Radio resource control RRC, be used for sending configuration information to user equipment (UE), wherein comprise the report cycle information of long-term/bandwidth pre-coding matrix sign PMI-1 information in this configuration information and report timing off-set amount information, and described report cycle is for independently reporting the report cycle of described PMI-1 information;
UE, be used to receive the configuration information that RRC sends, and according to the report cycle information that comprises in the described configuration information and report timing off-set amount information, determine to report the moment of described PMI-1 information, and the number of data streams that reports according to self sign RI information reports evolution base station eNB in the described moment of determining with channel quality information CQI information when judging described RI information greater than the RI threshold value set; Otherwise, PMI-1 information is reported eNB in the described moment of determining;
ENB is used to receive the PMI-1 information that described UE reports.
The reporting device of a kind of channel condition information that the embodiment of the invention provides comprises:
Receiver module, be used to receive the configuration information that radio resource control RRC sends, comprise the report cycle information of long-term/bandwidth pre-coding matrix sign PMI-1 information in the wherein said configuration information and report timing off-set amount information, and described report cycle is for independently reporting the report cycle of described PMI-1 information;
Determination module is used for according to described report cycle information and reports timing off-set amount information, determines to report the moment of described PMI-1 information;
Judge reporting module, the number of data streams sign RI information that is used for reporting according to self judges whether to carry out reporting of PMI-1 information;
Sending module is used in the described moment of determining channel quality information CQI information being reported evolution base station eNB when judging described RI information greater than the RI threshold value set; When judging described RI information, PMI-1 information is reported eNB in the described moment of determining smaller or equal to the RI threshold value set.
The embodiment of the invention provides a kind of report method, system and device of channel condition information, and the report cycle information by separate configurations PMI-1 information in this method and report timing off-set amount information realizes independently reporting this PMI-1 information.Because in the implementation that the embodiment of the invention provides, PMI-1 information need not to report parameter information multiplexing with other, therefore improved the accuracy that these other parameter informations report, and, therefore made system obtain bigger flexibility because the report cycle of this PMI-1 information can separate configurations.
Description of drawings
The method that the channel condition information that Fig. 1 provides for the embodiment of the invention reports;
The system configuration schematic diagram that the channel condition information that Fig. 2 provides for the embodiment of the invention reports;
The apparatus structure schematic diagram that the channel condition information that Fig. 3 provides for the embodiment of the invention reports.
Embodiment
The embodiment of the invention is in order to improve the accuracy that RI information reports, improve system flexibility, a kind of report method of channel condition information is provided, increased a kind of new reporting types report type5 in this method, in this reporting types, report PMI-1 information, the report cycle information of this reporting types and report timing off-set amount information wherein by high-rise Radio Resource control (Radio Resource Control, RRC) carry out semi-static control, the report cycle of this PMI-1 information is for independently reporting the report cycle of PMI-1 information, make this PMI-1 information give the correct time last, need not to carry out multiplexing with other parameter informations, for example need not carry out multiplexing with RI information, thereby improved the accuracy that RI information reports, and can make system obtain bigger flexibility.
Below in conjunction with Figure of description, the embodiment of the invention is elaborated.
The report method of the channel condition information that Fig. 1 provides for the embodiment of the invention, this method may further comprise the steps:
S101:UE receives the configuration information that RRC sends, and wherein comprise the report cycle information of PMI-1 information in this configuration information and report timing off-set amount information, and described report cycle is for independently reporting the report cycle of described PMI-1 information.
To report the report cycle of this PMI-1 information be separate configurations to UE in embodiments of the present invention, need not to report parameter information multiplexing with other.And UE reports the report cycle information of PMI-1 information and reports timing off-set amount information all is the semi-static configuration that RRC carries out, and with this report cycle information and report timing off-set amount information to be carried to be issued to UE in the configuration information.
S102: described UE is according to described report cycle information and report timing off-set amount information, determines to report the moment of described PMI-1 information.
When UE receives the configuration information that RRC sends and since comprise in this configuration information separate configurations this PMI-1 information report cycle information and report timing off-set amount information, so UE can determine to report the moment of PMI-1 information according to this configuration information.
S103: described UE reports eNB in the described moment of determining with PMI-1 information.
In the report method of the channel condition information that the embodiment of the invention provides, in existing reporting types, increase a kind of new reporting types report type5, the new reporting types report type5 of this increase is used to report PMI-1 information.The report cycle information of report type5 with report timing off-set amount information to carry out semi-static control by high-level signaling, and the report cycle of report type5 with report timing off-set amount and existing report type separate configurations.
High-level signaling configuration report pattern to send to UE after, according to every kind of information that reports pattern UE to adopt PUCCH to report can be the combination of several report type, therefore the PUCCH reporting mode in order to support to comprise report type5 in embodiments of the present invention, when comprising the report type5 information of PMI-1 information correspondence in reporting pattern, this reports the information that can also comprise at least a other reporting types in the pattern.For example this reports pattern to comprise: report type2: broadband (Wideband) CQI/PMI, report type3:RI and Report type5: long-term broadband reports reporting types such as (Long-term widebandreport), perhaps this reports pattern also can comprise: report type 1: subband (sub-band) CQI, report type2:Wideband CQI/PMI, report type3:RI and report type5:Long-term wideband report.Above-mentioned two examples that comprise report type5 in the pattern that just report can also adopt other that comprise report type5 and at least a other reporting types information to report pattern, just do not give unnecessary details one by one here.
Report type2 is used to report short-term PMI information in embodiments of the present invention, promptly reports PMI-2 information.Owing to comprise at least two kinds of reporting types in the pattern a kind of reporting, and the report cycle information that reports parameter of every kind of reporting types correspondence and the timing off-set amount information that reports are different, but also may have a certain or certain a several reporting types correspondence report reporting of parameter information constantly identical.In order to reduce the expense of signaling, the precedence information of every kind of reporting types can be set in embodiments of the present invention, the wherein setting that can carry out for RRC of the information of this priority, the perhaps setting that also can carry out for UE self.
In reporting pattern, certain two kinds report the pattern correspondence report reporting of parameter information constantly identical the time, UE can be according to the precedence information of reporting types information, the parameter information that reports of the reporting types correspondence that priority is the highest reports eNB.Therefore as can be known, report reporting constantly of parameter information and reporting when constantly identical of PMI-1 information that report type5 is corresponding when other reporting types information correspondences, UE is according to the precedence information of reporting types information, when the priority of report type5 is the highest, then this PMI-1 information is reported eNB.When UE this report constantly report the highest reporting types correspondence of priority report parameter information the time, UE abandons the reporting types corresponding parameters information of other priority.
When for example in reporting pattern, comprising report type1, report type2, report type3 and reporttype5, then the Dui Ying parameter information that reports is respectively sub-band CQI information, wideband CQI/PMI information, RI information and PMI-1 information, and the priority of reporting types order from high to low is respectively reporttype3, report type5, report type2 and report type1.When above-mentioned reporting types correspondence report reporting of parameter information constantly identical the time, then UE only reports the RI information of the highest report type3 correspondence of priority, reports parameter information and abandon other.
Comprise PMI-1 information among the report type5 in embodiments of the present invention, can also comprise the channel quality information relevant with PMI-1 information, i.e. reporting constantly in PMI information, UE also will report the channel quality information relevant with this PMI-1 information, and for example this channel quality information can be CQI information etc.When comprising CQI information among the reporttype5, the channel quality information that this CQI information can obtain for the information calculations such as RI/PMI-1/PMI-2 that hypothesis eNB has adopted this UE to recommend.
Because strengthening, feedback is mainly used in multi-user's multiple-input and multiple-output (Multi-User Multiple-InputMultiple-Output, MU-MIMO) scene, and the codebook structure that may exist in the MU-MIMO scene comprises: the RI threshold value RI that is not more than setting in RI information
TThe time, the dimension of PMI-1 is N
T* RI
T, the dimension of PMI-2 is RI
T* RI, wherein N
TNumber of transmission antennas for eNB; As the RI threshold value RI of RI greater than setting
TThe time, the dimension of PMI-1 is fixing N
T* N
T, the dimension of PMI-2 is N
T* RI.
Based on above-mentioned codebook structure, the RI information that UE can report according to himself judges whether not carry out reporting of PMI-1 information.Because as the RI threshold value RI of RI greater than setting
TThe time, the dimension of PMI-1 is fixed, and is relevant with the number of transmission antennas of eNB, and therefore in this case, UE is in order to save the expense of signaling, and UE can not carry out reporting of PMI-1 information, and only report CQI information in the moment that reports of PMI-1 information.
Perhaps in embodiments of the present invention UE also no matter the numerical value of RI what are, carry out reporting of PMI-1 information all the time, report at this that UE can calculate PMI-1 information according to fixing RI value in process, this fixing RI value is the RI threshold value RI than setting
TLittle numerical value.Because how many UE no matter numerical value of RI is, all the time carry out reporting of PMI-1 information, therefore eNB can obtain corresponding PMI-1 information all the time, thereby can be so that the dynamic switching of MU-MIMO pattern or Single User MIMO (SU-MIMO) pattern, and be convenient to Adaptive Modulation and Coding (Adaptive Modulation and Coding, AMC).
In above-mentioned codebook structure, the CQI information that comprises among the report type5 also can be carried out concrete calculating according to the different values of RI equally.Be not more than the RI threshold value RI of setting as RI
TThe time, the CQI information that comprises among the report type5 is that (PMI-2), promptly UE hypothesis eNB adopts the CQI of its RI/PMI-1/PMI-2 information calculations that reports to CQI, as the RI threshold value RI of RI greater than setting for RI, PMI-1
TThe time, the CQI information that comprises among the report type5 is CQI (RI
X, PMI-1, PMI-2
X), wherein, RI
XFor less than RI threshold value RI
TNumerical value, PMI-2
XFor the dimension selected from code book 2 is RI
TThe pre-coding matrix of * RI, the CQI information that this reports are the RI that UE hypothesis eNB adopts it to report
X/ PMI-1/PMI-2
XThe CQI of information calculations.Because the corresponding CQI value of each code word, in order to save the expense of signaling, the mode that the CQI value of two code words can be carried out differential coding reports in embodiments of the present invention.When comprising report type1 or report type2 in embodiments of the present invention in reporting pattern, same in order to save the expense of signaling, the mode that the CQI value of two code words can be carried out differential coding reports.
Table 2 is feeding back when strengthening based on 8 antennas that the embodiment of the invention provides, the reporting types that the PUCCH that is introduced reports pattern to comprise, and the bit of reporting types correspondence counts information, and only comprises PMI-1 information in the information that report type5 reports in this table 2.
Table 2
In above-mentioned table 2, be that example describes with 8 antennas, wherein the information that reports of report type1 is Sub-band CQI information, the information that report type2 reports is short-term PMI/CQI information, be PMI-2 information and CQI information, the information that report type3 reports is RI information, the information that report type4 reports is Wideband CQI information, and the information that report type5 reports is long-term/broadband reporting information, and this reporting information is a PMI-1 information in table 2.
The Sub-band CQI information that report type1 reports is identical 2 antennas reporting in figure place and the prior art during with 4 antennas.When 8 antennas, under pattern 1-2, this Sub-band CQI information need not to report.Under pattern 2-2, when the value of RI was 1, the figure place that reports was the sub band number that is divided into, and this information that reports also comprises CQI-1 (RI, W1, W2), promptly suppose to calculate after the RI/PMI-1/PMI-2 information that eNB adopted UE to recommend the CQ1 information of gained, when the value of RI greater than 1 the time, the figure place that reports is the sub band number that is divided into, and this information that reports also comprise CQI-1 (RI, W1, W2) and Δ CQI-2 (RI, W1, W2), Δ CQI-2 (RI, W1 wherein, W2) calculate the CQ1 information of gained after the RI＞1/PMI-1/PMI-2 information that has adopted UE to recommend for hypothesis eNB, with CQI-1 (RI, W1, difference W2).
The information that report type2 reports is short-term PMI/CQI information, and this figure place that reports parameter information is identical with the corresponding figure place of parameter that reports in the prior art under 2 antennas and 4 antennas.Equal at 8 antenna RI under 1 the situation, in pattern 1-2 and 2-2, the information that report type2 reports is PMI-2 information, and CQI-1 (RI, W1, W2), wherein (RI, W1 W2) calculate the CQ1 information of gained to CQI-1 after the RI/PMI-1/PMI-2 information that has adopted UE to recommend for hypothesis eNB.At 8 antenna RI greater than 1 less than the RI threshold value RI that sets
TThe time, in pattern 1-2 and pattern 2-2, the information that report type2 reports is PMI-2 information, CQI-1 (RI, W1, W2) and Δ CQI-2 (RI, W1, W2), wherein, Δ CQI-2 (RI, W1, W2) calculate the CQ1 information of gained after the RI＞1/PMI-1/PMI-2 information that has adopted UE to recommend for hypothesis eNB, with CQI-1 (RI, W1, W2) difference of information.At the RI threshold value RI of 8 antenna RI greater than setting
TThe time, the information that report type2 reports is PMI-2 information, CQI-1 (RI, 1, W2) and Δ CQI-2 (RI, 1, W2), wherein, CQI-1 (RI, 1, W2) calculate the CQI information of gained after the RI/PMI-1=1/PMI-2 information that has adopted UE to recommend for hypothesis eNB, Δ CQI-2 (RI, 1, the W2) RI＞RI that has adopted UE to recommend for hypothesis eNB
TCalculate the CQ1 information of gained after the/PMI-1=1/PMI-2 information, with CQI-1 (RI, 1, the W2) difference of information.
The information that report type3 reports is RI information, and the figure place of the RI information that reports in the figure place of its RI information that reports and the prior art under 2 antennas and 4 antennas is identical.Under the situation of 8 antennas, under pattern 1-2 and 2-2, the RI information that reports all is 3.
The information that report type4 reports is CQI information, because pattern 1-2 and 2-2 do not comprise reporttype4, so report type4 need not to report CQI information.
The information that report type5 reports is PMI-1 information, is not more than the RI threshold value RI of setting at 8 antenna RI
TThe time, under pattern 1-2 and pattern 2-2, this information that reports all is PMI-1 information., under pattern 1-2 and pattern 2-2, can not report the information of PMI-1, or report PMI-1 (RI during at 8 antenna RI greater than the RI threshold value set
X) information, wherein PMI-1 (RI
X) be that hypothesis RI is the RI less than the RI threshold value of setting
XThereby the PMI-1 information of determining.
Table 3 is feeding back when strengthening based on 8 antennas that the embodiment of the invention provides, the reporting types that the PUCCH that is introduced reports pattern to comprise, and the bit of reporting types correspondence counts information, and comprises PMI-1 information and CQI information in the information that report type5 reports in this table 3.
Table 3
The figure place of the reporting information of report type1, report type2, report type3 and report type4 and reporting information is identical with table 2 in above-mentioned table 3.The reporting information of report type5 comprises PMI-1 information and CQI information.Equal at 1 o'clock at 8 antenna RI, under pattern 1-2 and pattern 2-2, this information that reports comprises PMI-1 information and CQI (RI, W1, W2) information, wherein CQI (RI, W1 W2) calculates the CQI information of gained after the RI1/PMI-1/PMI-2 information that has adopted UE to recommend for hypothesis eNB.At 8 antenna RI greater than the 1 RI threshold value RI that is not more than setting
TThe time, under pattern 1-2 and pattern 2-2, this information that reports comprises: PMI-1, CQI (RI, W1, W2) and Δ CQI-2 (RI, W1, W2), wherein, Δ CQI-2 (RI, W1, W2) calculate the CQ1 information of gained after the RI＞1/PMI-1/PMI-2 information that has adopted UE to recommend for hypothesis eNB, with CQI (RI, W1, W2) difference of information.At the RI threshold value RI of 8 antenna RI greater than setting
TThe time, under pattern 1-2 and pattern 2-2, this information that reports comprises: PMI-1, CQI (RI
X, W1, W2) and Δ CQI-2 (RI, W1, W2), CQI (RI wherein
X, W1, W2) RI that has adopted UE to recommend for hypothesis eNB is the RI less than the RI threshold value of setting
X, and according to RI
XCalculate the CQ1 information of gained after the/PMI-1/PMI-2 information, Δ CQI-2 (RI, W1, W2) RI＞RI that has adopted UE to recommend for hypothesis eNB
TCalculate the CQ1 information of gained after the/PMI-1/PMI-2 information, with CQI (RI
X, W1, W2) difference of information.
In existing reporting types, increase a kind of new reporting types in embodiments of the present invention, this reporting types is used to report PMI-1 information, and high-level signaling can report the report cycle information of parameter to the reporting types of this increase and report timing off-set amount information to carry out semi-static configuration, report cycle information also is separate configurations with reporting timing off-set amount information and existing reporting types simultaneously, therefore needn't be with existing to report pattern to carry out multiplexing, increase the accuracy that reports, and improved the flexibility of system.
The reporting system structural representation of a kind of channel condition information that Fig. 2 provides for the embodiment of the invention, this device comprises:
Radio resource control RRC 21, be used for sending configuration information to user equipment (UE), wherein comprise the report cycle information of long-term/bandwidth pre-coding matrix sign PMI-1 information in this configuration information and report timing off-set amount information, and described report cycle is for independently reporting the report cycle of described PMI-1 information;
UE22, be used to receive the configuration information that RRC sends, and according to the report cycle information that comprises in the described configuration information and report timing off-set amount information, determine to report the moment of described PMI-1 information, in the described moment of determining PMI-1 information is reported evolution base station eNB;
ENB23 is used to receive the PMI-1 information that described UE reports.
The reporting device structural representation of a kind of channel condition information that Fig. 3 provides for the embodiment of the invention, this device comprises:
Receiver module 31, be used to receive the configuration information that radio resource control RRC sends, comprise the report cycle information of long-term/bandwidth pre-coding matrix sign PMI-1 information in the wherein said configuration information and report timing off-set amount information, and described report cycle is for independently reporting the report cycle of described PMI-1 information;
Determination module 32 is used for according to described report cycle information and reports timing off-set amount information, determines to report the moment of described PMI-1 information;
Sending module 33 is used in the described moment of determining PMI-1 information being reported evolution base station eNB.
In the described device,
Described sending module 33 also is used in the described moment of determining channel quality information CQI being reported eNB.
In the described device,
Described sending module 33, also be used for the pattern information that reports according to the RRC transmission, when reporting of the described reporting types that reports the information of PMI-1 described in pattern correspondence arrived constantly, constantly PMI-1 information is reported eNB, the wherein said reporting types information that reports pattern to comprise at least a other reporting types information and described PMI-1 information correspondence described reporting.
In the described device,
Described sending module 33, also be used for describedly to report pattern, other reporting types information correspondences report reporting of parameter information constantly constantly identical with reporting of described PMI-1 information the time, the precedence information of the reporting types information of described UE basis, when the priority of the reporting types of described PMI-1 information correspondence is the highest, described PMI-1 information is reported eNB.
Described device also comprises:
Judge reporting module 34, the number of data streams sign RI information that is used for reporting according to self judges whether to carry out reporting of PMI-1 information, when described RI information during greater than the RI threshold value set, reports CQI information, and stops to report described PMI-1 information.
The embodiment of the invention provides a kind of report method, system and device of channel condition information, and the report cycle information by separate configurations PMI-1 information in this method and report timing off-set amount information realizes independently reporting this PMI-1 information.Because in the implementation that the embodiment of the invention provides, PMI-1 information need not to report parameter information multiplexing with other, therefore improved the accuracy that these other parameter informations report, and, therefore made system obtain bigger flexibility because the report cycle of this PMI-1 information can separate configurations.
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, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (8)
1. the report method of a channel condition information is characterized in that, comprising:
User equipment (UE) receives the configuration information that radio resource control RRC sends, comprise the report cycle information of long-term/bandwidth pre-coding matrix sign PMI-1 information in the wherein said configuration information and report timing off-set amount information, and described report cycle is for independently reporting the report cycle of described PMI-1 information;
Described UE is according to described report cycle information and report timing off-set amount information, determines to report the moment of described PMI-1 information;
The number of data streams sign RI information that described UE reports according to self judges whether to carry out reporting of PMI-1 information; If described RI information is greater than the RI threshold value of setting, then UE reports evolution base station eNB in the described moment of determining with channel quality information CQI information; Otherwise described UE reports eNB in the described moment of determining with PMI-1 information.
2. the method for claim 1 is characterized in that, described UE reports eNB to comprise PMI-1 information in the described moment of determining:
UE is according to the pattern information that reports of RRC transmission, when reporting of the described reporting types that reports the information of PMI-1 described in pattern correspondence arrived constantly, constantly PMI-1 information is reported eNB, the wherein said reporting types information that reports pattern to comprise at least a other reporting types information and described PMI-1 information correspondence described reporting.
3. method as claimed in claim 2 is characterized in that, described UE reports eNB to comprise PMI-1 information in the described moment of determining:
Report in the pattern when described, other reporting types information correspondences report reporting of parameter information constantly constantly identical with reporting of described PMI-1 information the time, described UE is according to the precedence information of reporting types information, when the priority of the reporting types of described PMI-1 information correspondence is the highest, described PMI-1 information is reported eNB.
4. the method for claim 1 is characterized in that, described UE reports CQI information to comprise:
The UE basis is less than the 2nd RI information of the RI threshold value of described setting, PMI-1 information and short-term pre-coding matrix sign PMI-2x information are determined CQI information, and report definite described CQI information, wherein PMI-2x information is reporting in the pattern of PMI-1 correspondence, and dimension multiply by the pre-coding matrix of the 2nd RI for the RI threshold value of setting.
5. the reporting system of a channel condition information is characterized in that, described system comprises:
Radio resource control RRC, be used for sending configuration information to user equipment (UE), wherein comprise the report cycle information of long-term/bandwidth pre-coding matrix sign PMI-1 information in this configuration information and report timing off-set amount information, and described report cycle is for independently reporting the report cycle of described PMI-1 information;
UE, be used to receive the configuration information that RRC sends, and according to the report cycle information that comprises in the described configuration information and report timing off-set amount information, determine to report the moment of described PMI-1 information, and the number of data streams that reports according to self sign RI information reports evolution base station eNB in the described moment of determining with channel quality information CQI information when judging described RI information greater than the RI threshold value set; Otherwise, PMI-1 information is reported eNB in the described moment of determining;
ENB is used to receive the PMI-1 information that described UE reports.
6. the reporting device of a channel condition information is characterized in that, described device comprises:
Receiver module, be used to receive the configuration information that radio resource control RRC sends, comprise the report cycle information of long-term/bandwidth pre-coding matrix sign PMI-1 information in the wherein said configuration information and report timing off-set amount information, and described report cycle is for independently reporting the report cycle of described PMI-1 information;
Determination module is used for according to described report cycle information and reports timing off-set amount information, determines to report the moment of described PMI-1 information;
Judge reporting module, the number of data streams sign RI information that is used for reporting according to self judges whether to carry out reporting of PMI-1 information;
Sending module is used in the described moment of determining channel quality information CQI information being reported evolution base station eNB when judging described RI information greater than the RI threshold value set; When judging described RI information, PMI-1 information is reported eNB in the described moment of determining smaller or equal to the RI threshold value set.
7. device as claimed in claim 6, it is characterized in that, described sending module, also be used for the pattern information that reports according to the RRC transmission, when reporting of the described reporting types that reports the information of PMI-1 described in pattern correspondence arrived constantly, constantly PMI-1 information is reported eNB, the wherein said reporting types information that reports pattern to comprise at least a other reporting types information and described PMI-1 information correspondence described reporting.
8. device as claimed in claim 7, it is characterized in that, described sending module also is used for, report in the pattern when described, other reporting types information correspondences report reporting of parameter information constantly constantly identical with reporting of described PMI-1 information the time, the precedence information of the reporting types information of described UE basis when the priority of the reporting types of described PMI-1 information correspondence is the highest, reports eNB with described PMI-1 information.
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| CN103975621A (en) * | 2012-03-26 | 2014-08-06 | 富士通株式会社 | Method and device for reporting periodic channel status information |
| CN105791144A (en) * | 2014-12-19 | 2016-07-20 | 中兴通讯股份有限公司 | Method and apparatus for sharing link traffic |
| CN106685576B (en) * | 2015-11-05 | 2019-07-05 | ***通信集团公司 | A kind of method, apparatus of feeding back channel state information, terminal and base station |
| CN107294573A (en) * | 2016-04-07 | 2017-10-24 | 北京信威通信技术股份有限公司 | Feedback method, device and the terminal of channel information |
| CN109362101B (en) * | 2016-09-30 | 2020-03-10 | 华为技术有限公司 | Information reporting method and device |
| CN108632836B (en) | 2017-03-17 | 2019-12-03 | 维沃移动通信有限公司 | Beam information acquisition methods and report method, network side equipment and terminal |
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| CN101674275A (en) * | 2009-09-22 | 2010-03-17 | 北京邮电大学 | Method for decreasing spending on channel quality information feedback of wide-band mobile communication system |
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| CN101674275A (en) * | 2009-09-22 | 2010-03-17 | 北京邮电大学 | Method for decreasing spending on channel quality information feedback of wide-band mobile communication system |
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