CN102006634B - Method and equipment for reporting and receiving channel information of multi-carrier system - Google Patents
Method and equipment for reporting and receiving channel information of multi-carrier system Download PDFInfo
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Abstract
The invention discloses a method and equipment for reporting and receiving channel information of a multi-carrier system. The method comprises the following steps that: a base station side determines working carriers and non-working carriers in all carriers; the base station side instructs a first feedback mode of channel information of the working carriers and the non-working carriers to user equipment; when performing the first feedback mode, the user equipment degrades the channel information of the measured non-working carriers according to the magnitude deviation instructed in the channel information reported by the working carriers and the non-working carriers which are instructed in the first feedback mode; and the base station side receives the channel information of the working carriers and the non-working carriers which are reported by the user equipment, wherein the channel information is reported by the user equipment according to the first feedback mode. By the invention, the consistency with the current long term evolution (LTE) system can be kept, the acquisition of much channel information by the base station end can be guaranteed, the gain optimization of frequency selectivity of the system can be better guaranteed, limited fed-back resources are saved, and acquisition of the channel information of the non-working carriers in the carrier switchover can be guaranteed.
Description
Technical field
The present invention relates to radio communication, particularly the reporting of a kind of multicarrier system channel information, receiving handling method and equipment.
Background technology
In LTE-A (Long Term Evolution-Advance, long-term evolution upgrading) multicarrier system, compare LTE (Long Term Evolution, Long Term Evolution) system and need support bigger system bandwidth, tentatively be decided to be 100MHz at present.See with present frequency spectrum resource distribution, the acquisition of the preliminary definition 100MHz of LTE-A system resource partly is made up of several carrier waves, each carrier wave part 5-20MHz does not wait, and continuously fixed or discrete being distributed on the entire spectrum resource according to concrete condition, and the compatible existing LTE technical characterstic of the characteristic of each carrier wave part, Fig. 1 is the spectrum aggregating system schematic, specifically can be referring to shown in Figure 1.
In the LTE-A system, uply, descending can adopt asymmetrical carrier wave to carry out data dispatch and transmission, the descending carrier number that is the supposing the system support is M, the up-link carrier number is N, M＞=N wherein, so at same interval, N up-link carrier need carry the channel information of M descending carrier, suppose N=1, M=3, the descending carrier number that is to say system's support so is 3, and the up-link carrier number is 1, so just need be at same up-link carrier together or the channel information of 3 carrier waves of timesharing feedback.Owing to adopt the mode that reports of similar existing LTE system, up reporting channel information can be considered to report the channel information that reports 3 descending carriers at interval respectively at 3, also can adopt the mode of associating feedback, at the same channel information of 3 carrier waves of compressed feedback at interval that reports.
In the prior LTE system, UE (User Equipment, subscriber equipment) to obtain at frequency domain that granularity adopts with the subband be least unit to feedback information, the base station is by receiving the channel information that the UE feedback information obtains system bandwidth, the UE feedback information comprises: RI (Rank Information, rank indication information), subband CQI (Channel Quality Indicator channel quality indication (CQI) information) and broadband CQI/PMI (Precooding matrix indicator, pre-coding matrix indication information) etc.
The method of UE feedback channel information can be as follows at present:
Periodic feedback.
On PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel), the cycle that UE disposes according to the base station high level, according to certain rule, the periodic feedback channel information.
For example:
Present channel information feedback method is: the feedback in turn of considering RI information, broadband CQI/PMI and subband CQI.That is:
At certain time interval feedback broadband CQI/PMI.
Between 2 broadband CQI/PMI, according to the best subband CQI of selected channel information in the system requirements feedback bandwidth part, and subband CQI information and broadband CQI/PMI information have certain position to be offset with the feedback cycle starting point in the cycle of feedback.The PMI of the basis broadband of selected subband CQI feedback obtains in the portions of bandwidth.
The integral multiple in broadband CQI/PMI cycle feedback RI information and in the cycle of feedback RI information have certain position to be offset with the feedback cycle starting point, if RI information and CQI/PMI information collision, then priority feedback RI information.
Wherein concrete position concerns, is indicated to UE by high-rise configuration by the base station.
Fig. 2 is the process of transmitting schematic diagram of the CQI/PMI/RI on the PUCCH, and as shown in the figure, in periodic feedback, 4 kinds of CQI/PMI and RI reporting types are as follows:
Class1: the subband CQI that reports UE to select;
Type 2: report broadband CQI and PMI;
Type 3: report RI information;
Type 4: report broadband CQI.
Among the figure, the representative of RI information is in the position feedback RI information that indicates RI, and broadband CQI/PMI is fed back in the WB representative, and FS represents the frequency selection, namely feeds back UE and selects subband CQI information.
In LTE-A (LTE-Advanced) multicarrier system, because limited frequency spectrum resources, when distributing frequency spectrum resource, adopt the partially polymerized technology of a plurality of carrier waves, wherein a plurality of carrier waves part may continuous or discrete being distributed on the frequency spectrum resource, and the characteristic of each carrier wave part should meet the basic demand in the present LTE standard.
So, in order effectively to carry out the link circuit self-adapting process in the LTE-A system, for the channel information that obtains in the LTE-A system, UE need feed back the channel information of a plurality of carrier waves, and the base station is carried out carrier wave and selected data dispatch and transmission according to the channel information of feedback.All in the carrier wave, be divided into UE DL Component Carrier (downlink member carrier, the carrier wave of namely working) and Additional Component Carrier (other member carriers, be the inoperative carrier wave) two class carrier waves, namely work carrier wave and inoperative carrier wave, to be base station down send the carrier wave of data to the user to the work carrier wave, and the inoperative carrier wave is the part of removing the work carrier wave in whole carrier waves.Because up feedback resources is limited, can use a plurality of methods that report a plurality of carrier channel information at interval respectively that report, the method is relatively accurate and guaranteed compatibility with existing LTE system, but distribution time is long on time domain, can cause the delay of feedback of channel information; Thereby can adopt in the same method of selecting feedback channel information at interval that reports, it is the channel information that UE measures whole carrier waves, select one or more wherein best carrier wave, according to certain rule feedback, scheduled transmission and carrier wave that the base station utilizes the channel information that reports to do data switch, its deficiency is: if only simply select the channel information of one or more best in the whole carrier waves of feedback carrier wave, in Additional Component Carrier inoperative carrier channel condition preferably under the situation, the channel information that reports Additional Component Carrier that so might be too much, influence the acquisition number of times of DL Component Carrier channel conditions, cause the inaccurate of downlink data dispatching transmission.
Summary of the invention
The invention provides the reporting of a kind of channel information, receiving handling method and equipment, in order to solve in the prior art, may be because reporting too much inoperative carrier channel information, and influence the acquisition number of times of the channel conditions of work carrier wave, finally cause the inaccurate problem of downlink data dispatching transmission.
A kind of receiving handling method of multiple carrier channel information is provided in the embodiment of the invention, has comprised the steps:
Base station side is all being determined work carrier wave and inoperative carrier wave in the carrier wave;
Base station side is to first feedback model of subscriber equipment indication work carrier wave and inoperative carrier channel information, comprises the indication that the magnitude deviation that makes work carrier wave that subscriber equipment indicates by base station side and inoperative carrier wave reporting channel information in first feedback model is demoted and handled inoperative carrier wave measured channel information in described first feedback model;
Base station side receives the work carrier wave of user equipment to report and the channel information of inoperative carrier wave, and described channel information is that subscriber equipment reports according to first feedback model of indicating.
Preferably, further comprise:
When determining that according to the channel information that reports by first feedback model channel information of inoperative carrier wave is better than the channel information of work carrier wave, base station side is to second feedback model of UE indication inoperative carrier channel information, wherein, the inoperative carrier channel precision of information that reports by described second feedback model of UE is greater than the inoperative carrier channel precision of information that reports by first feedback model.
Preferably, further comprise:
Base station side receives the channel information of the inoperative carrier wave that UE reports by second feedback model;
When determining that according to the channel information that reports by second feedback model channel information of inoperative carrier wave is better than the channel information of work carrier wave, the inoperative carrier wave that will be better than the work carrier wave joins in the work carrier set, and in the enterprising line data scheduling of this carrier wave.
A kind of report process method of channel information is provided in the embodiment of the invention, has comprised the steps:
UE is all determining work carrier wave and inoperative carrier wave in the carrier wave according to the indication of base station side;
After subscriber equipment has been indicated first feedback model of work carrier wave and inoperative carrier channel information in the base station side configuration, the work carrier wave of indicating in first feedback model by base station side and the magnitude deviation of inoperative carrier wave reporting channel information be to processings of demoting of the channel information of the inoperative carrier wave measured, and press the described first feedback model reporting channel information.
Preferably, further comprise:
When the base station side indication reports inoperative carrier channel information by second feedback model, UE reports inoperative carrier channel information by second feedback model, wherein, the inoperative carrier channel precision of information that reports by described second feedback model of UE is greater than the inoperative carrier channel precision of information that reports by first feedback model.
A kind of base station equipment is provided in the embodiment of the invention, has comprised:
The carrier wave determination module is used for determining work carrier wave and inoperative carrier wave at whole carrier waves;
First indicating module, be used for first feedback model to subscriber equipment indication work carrier wave and inoperative carrier channel information, comprise in described first feedback model that the magnitude deviation that makes work carrier wave that subscriber equipment indicates by base station side and inoperative carrier wave reporting channel information in first feedback model is to the demote indication of processing of inoperative carrier wave measured channel information;
Receiver module be used for to receive work carrier wave and the channel information of inoperative carrier wave that UE reports, and described channel information is that UE reports according to first feedback model of indicating.
Preferably, further comprise:
Second indicating module, be used for when determining that according to the channel information that reports by first feedback model channel information of inoperative carrier wave is better than the channel information of work carrier wave, second feedback model to UE indication inoperative carrier channel information, wherein, the inoperative carrier channel precision of information that reports by described second feedback model of UE is greater than the inoperative carrier channel precision of information that reports by first feedback model.
Preferably, further comprise:
Handover module is used for behind the channel information that receives the inoperative carrier wave that UE reports by second feedback model; When determining that according to the channel information that reports by second feedback model channel information of inoperative carrier wave is better than the channel information of work carrier wave, the inoperative carrier wave that will be better than the work carrier wave joins in the work carrier set, and in the enterprising line data scheduling of this carrier wave.
A kind of subscriber equipment is provided in the embodiment of the invention, has comprised:
The carrier wave determination module is used for determining work carrier wave and inoperative carrier wave according to the indication of base station side at whole carrier waves;
First reporting module, be used for after base station side has been indicated first feedback model of work carrier wave and inoperative carrier channel information, the work carrier wave of indicating in first feedback model by base station side and the magnitude deviation of inoperative carrier wave reporting channel information be to processings of demoting of the channel information of the inoperative carrier wave measured, and press the described first feedback model reporting channel information.
Preferably, further comprise:
Second reporting module, be used for when the base station side indication reports inoperative carrier channel information by second feedback model, report inoperative carrier channel information by second feedback model, wherein, the inoperative carrier channel precision of information that reports by described second feedback model is greater than the inoperative carrier channel precision of information that reports by first feedback model.
Beneficial effect of the present invention is as follows:
In the invention process, base station side is all being determined work carrier wave and inoperative carrier wave in the carrier wave; Base station side is to first feedback model of UE indication work carrier wave and inoperative carrier channel information, when UE carried out described first feedback model, the magnitude deviation of the reporting channel information that UE will indicate in first feedback model by base station side was to the processing of demoting of the channel information of the inoperative carrier wave measured; The work carrier wave that base station side reception UE reports and the channel information of inoperative carrier wave, described channel information are that UE reports according to first feedback model of indicating.
In technical scheme implementation process provided by the invention, UE will be in the process of carrying out by first feedback model, by the magnitude deviation of the reporting channel information of indication to the processing of demoting of the channel information of the inoperative carrier wave measured; Simultaneously, be at the same channel information that reports work carrier wave and inoperative carrier wave at interval that reports.By reporting at same interval, overcome the long and problem of the feedback of channel information time-delay that causes of on time domain distribution time; Adopt same when reporting at interval feedback channel information, by processing that the inoperative carrier wave is demoted, even make the inoperative carrier wave of feedback at channel condition preferably under the situation, also the channel information that reports the inoperative carrier wave that can be not too much, also thereby overcome and can too much influence the problem of work carrier channel situation acquisition number of times because reporting the inoperative number of carriers, thus guaranteed to carry out the accuracy that downlink data dispatching transmits based on channel information.
Simultaneously, adopt the scheme in the embodiment of the invention, can keep the consistency with existing LTE system, owing to report a plurality of channel informations at interval same reporting, can guarantee that the base station end obtains more channel information, better guarantee the frequency selectivity gain optimization of system;
And, further, obtain effectively work carrier wave and inoperative carrier channel information by assurance, and when the inoperative carrier performance is enough good, consider to feed back, namely save the limited feedback resource, guaranteed when carrier wave switches the acquisition to inoperative carrier channel information again.
Description of drawings
Fig. 1 is background technology intermediate frequency spectrum paradigmatic system schematic diagram;
Fig. 2 is the process of transmitting schematic diagram of the CQI/PMI/RI on the PUCCH in the background technology;
Fig. 3 is the receiving handling method implementing procedure schematic diagram of channel information in the embodiment of the invention;
Fig. 4 is the implementing procedure schematic diagram of base station side during carrier wave switches in the embodiment of the invention;
Fig. 5 is the report process method implementing procedure schematic diagram of channel information in the embodiment of the invention;
Fig. 6 is the implementing procedure schematic diagram of UE side during carrier wave switches in the embodiment of the invention;
Fig. 7 is base station equipment structural representation in the embodiment of the invention;
Fig. 8 is user device architecture schematic diagram in the embodiment of the invention.
Embodiment
Because, if only the channel information of one or more best in whole carrier waves carrier wave is fed back in simple selection, in Additional Component Carrier inoperative carrier channel condition preferably under the situation, the channel information that reports Additional Component Carrier that so might be too much, influence the acquisition number of times of DLComponent Carrier channel conditions, cause the inaccurate of downlink data dispatching transmission.Therefore, the embodiment of the invention will provide a kind of new scheme to select to feed back the channel information of two class carrier waves; Further, also the channel information of this feedback is used for effectively supporting switching between data scheduled transmission and the multicarrier.Below in conjunction with accompanying drawing the specific embodiment of the present invention is described.
In declarative procedure, will describe from the reception processing procedure of base station side and the processing procedure that reports of UE side respectively.
One, the reception processing procedure of the channel information of base station side.
Fig. 3 is the receiving handling method implementing procedure schematic diagram of channel information, as shown in the figure, is receiving when handling and can comprise the steps:
That is, in first feedback model, comprise the indication that the magnitude deviation that makes work carrier wave that subscriber equipment indicates by base station side and inoperative carrier wave reporting channel information in first feedback model is demoted and handled inoperative carrier wave measured channel information;
The work carrier wave that step 303, base station side reception UE report and the channel information of inoperative carrier wave, described channel information is that UE reports according to first feedback model of indicating.
In above-mentioned enforcement, in step 302, UE will be in the process of carrying out by first feedback model, by the magnitude deviation of the reporting channel information of indication to the processing of demoting of the channel information of the inoperative carrier wave measured; Simultaneously, in step 303, be at the same channel information that reports work carrier wave and inoperative carrier wave at interval that reports.Same interval by step 303 reports, and has overcome the long and problem of the feedback of channel information time-delay that causes of on time domain distribution time; Adopt same when reporting at interval feedback channel information, by in step 302 to the processing of demoting of inoperative carrier wave, even make the inoperative carrier wave of feedback at channel condition preferably under the situation, also the channel information that reports the inoperative carrier wave that can be not too much, also thereby overcome and can too much influence the problem of work carrier channel situation acquisition number of times because reporting the inoperative number of carriers, thus guaranteed to carry out the accuracy that downlink data dispatching transmits based on channel information.
In the enforcement, first feedback model in the step 302 can comprise:
The magnitude deviation of the reporting channel information of inoperative carrier wave;
The number of the carrier wave that the channel quality that need report is best.
Can further include in first feedback model:
The inoperative carrier wave is according to order information RI=1, the channel information of feedback code word; And/or, inoperative carrier wave feedback broad-band channel information.Feeding back in the employing single codeword is to save the expense that reports.
In the enforcement, the work carrier wave of base station configure user device measuring and the feedback channel information content of inoperative carrier wave, feedback cycle, cycle bias internal, frequency domain internal feedback granularity; The magnitude deviation of the reporting channel information of inoperative carrier wave; The number of the carrier wave that the channel quality that need report is best; Report the carrier index of a top-quality M carrier wave; The inoperative carrier wave is according to order information RI=1, the channel information of feedback code word; Contents such as inoperative carrier feedback channels information.
The information that also can provide in reporting in the processing of UE introduced how according to feedback model is handled below.
In concrete the enforcement, the magnitude deviation of reporting channel information can be that base station side and subscriber equipment are made an appointment; Perhaps, can be that base station side is passed through high-rise configuration and/or physical layer control signaling indication UE.
In the enforcement, further can also comprise:
Base station configuration and indication subscriber equipment use the mode of switch bit indication to identify the carrier index that reports during to the channel information of the top-quality carrier wave of base station reporting channel;
Or base station configuration and indication subscriber equipment use the mode of bitmap (bit) indication to identify the carrier index that reports during to the channel information of the top-quality carrier wave of base station reporting channel.
In the enforcement, after the carrier channel information of base station side UE feedback in the statistics certain hour, if the performance of certain inoperative carrier wave is better than certain work carrier wave within a certain period of time, in step 304, will change the feedback model of this inoperative carrier wave so, further obtain the channel information of inoperative carrier wave in detail, therefore, the inoperative carrier channel precision of information that UE reports by second feedback model in the step 304 is greater than the inoperative carrier channel precision of information that reports by first feedback model.
Further, in order to be that the switching of intercarrier judges according to the channel information that reports, to improve the accuracy of downlink data dispatching transmission, can further include in the enforcement:
In concrete the enforcement, second feedback model then can for:
To be better than in the inoperative carrier wave adding work carrier wave of work carrier wave, by the feedback model periodic feedback channel information of work carrier wave;
Perhaps, the complete channel information of inoperative carrier wave that uses aperiodic feedback model to report to be better than the work carrier wave wherein can comprise one of broad-band channel information, sub-band channel information, pre-coding matrix indication PMI information, order indication RI information or its combination.
In receiving processing procedure, can also be used for effectively supporting the switching between data scheduled transmission and the multicarrier according to the channel information of feedback, therefore, can further include in the enforcement:
Step 305, base station side receive the channel information of the inoperative carrier wave that UE reports by second feedback model;
Embodiment one
To be that example describes as base station side with the base station in the present embodiment, also comprised the flow process in switching among the embodiment, in order to understand in the time can feeding back the channel information of two class carrier waves exactly the further utilization of technical scheme provided by the invention more clearly.
Fig. 4 is the implementing procedure schematic diagram of base station side in the carrier wave switching, as shown in the figure, can comprise:
Work carrier wave and inoperative carrier wave are all being determined in the carrier wave in step 401, base station;
The feedback of channel information pattern of step 402, base station indication UE work carrier wave and inoperative carrier wave;
In this step, when the indication feedback model, the feedback model of configuration effort carrier wave and inoperative carrier wave can be distinguished in the base station.In the feedback model of configuration respectively, can comprise:
The inoperative carrier wave is according to the channel information of the pattern feedback code word of RI=1;
Base station and subscriber equipment agreement, perhaps the magnitude deviation X of the reporting channel information of UE work carrier wave and inoperative carrier wave is indicated in high-rise, physical layer control signaling configuration;
Top-quality M carrier channel information of base station configuration UE end reporting channel, and carrier wave indication information; Wherein, when specifically implementing, the carrier wave indication information can use the mode of bitmap to use the indication of 5bits information to select the carrier index that reports.
The carrier channel information of UE feedback judges whether the performance of inoperative carrier wave is better than the work carrier wave in step 403, the base station statistics certain hour, is then to enter step 405, otherwise enters step 404;
In this step, if the performance of certain inoperative carrier wave is better than certain work carrier wave within a certain period of time, then, the base station will change the feedback model of this inoperative carrier wave, in order to further obtain the channel information of inoperative carrier wave in detail.
Step 404, continuation are carried out data dispatch and transmission at the work carrier wave;
The feedback model of step 405, change inoperative carrier wave;
In this step, the pattern after the inoperative carrier wave changes can be:
Mode one, indication UE replace the work carrier wave of poor-performing in the set of work carrier wave feedback, the inoperative carrier wave of better performances is joined carry out channel quality measurement and feedback in the work carrier set, and then obtain the detailed channel information of inoperative carrier wave; At this moment, can't carry out data dispatch on this carrier wave.After complete channel information on this carrier wave had been known in the base station, the base station was just understood data dispatching and is transmitted at this carrier wave.
Mode two, base station scheduling use aperiodic pattern to report complete channel information on the inoperative carrier wave of better performances; Like this, can relatively work after the receiving complete channel information channel information of carrier wave and this inoperative carrier wave to be selected of base station judges whether to carry out the carrier wave switching then.If the work carrier wave that the work carrier wave feeds back poor-performing in the set is then replaced in inoperative carrier channel better quality to be selected, it is joined in the work carrier set, and can be directly in the enterprising line data scheduling of this carrier wave.
Whether the inoperative carrier wave that relatively feed back step 406, base station is better than the work carrier wave, is then to change step 408 over to, otherwise changes step 407 over to;
Step 407, do not change existing work carrier wave and inoperative carrier wave;
Step 408, carry out carrier wave and switch.
In this step, the work carrier wave that the work carrier wave is fed back poor-performing in the set replaces to the inoperative carrier wave, these inoperative carrier waves are joined in the work carrier set, and can be directly in the enterprising line data scheduling of this carrier wave and transmission.
Two, the channel information of UE side reports processing procedure.
Fig. 5 is the report process method implementing procedure schematic diagram of channel information, as shown in the figure, reports when handling and can comprise the steps:
In above-mentioned enforcement, with step 302,303 corresponding, in step 502, UE in the process of carrying out by first feedback model, by the magnitude deviation of the reporting channel information of indication to the processing of demoting of the channel information of the inoperative carrier wave measured; Simultaneously, at the same channel information that reports work carrier wave and inoperative carrier wave at interval that reports.By reporting at same interval, overcome the long and problem of the feedback of channel information time-delay that causes of on time domain distribution time; Adopt same when reporting at interval feedback channel information, by processing that the inoperative carrier wave is demoted, even make the inoperative carrier wave of feedback at channel condition preferably under the situation, also the channel information that reports the inoperative carrier wave that can be not too much, also thereby overcome and can too much influence the problem of work carrier channel situation acquisition number of times because reporting the inoperative number of carriers, thus guaranteed to carry out the accuracy that downlink data dispatching transmits based on channel information.
In the enforcement, corresponding with step 302, in step 502, when comprising in first feedback model: during according to the channel information number of the best carrier wave of the magnitude deviation of the reporting channel information of the channel information of the pattern feedback code word of RI=1, inoperative carrier wave, the channel quality that need report, when then UE reports the channel information of work carrier wave and inoperative carrier wave by first feedback model, can report as follows:
According to the result who measures, according to the magnitude deviation of the reporting channel information of inoperative carrier wave, the channel information indication of inoperative carrier wave is reduced the processing of N magnitude, described N is the magnitude deviation of the reporting channel information of the base station side inoperative carrier wave of indicating;
The top-quality M of a selective channel carrier wave from work carrier wave and inoperative carrier wave, described M number are the channel information number of the best carrier wave of the channel quality that reports of needs that base station side is indicated.
When subscriber equipment reports the channel information of work carrier wave and inoperative carrier wave by first feedback model, can further include:
The inoperative carrier wave reports the single codeword channel information according to the pattern of RI=1;
And/or, inoperative carrier wave feedback broad-band channel information.
In concrete the enforcement, when UE reports the channel information of work carrier wave and inoperative carrier wave by first feedback model, it is also conceivable that following principle:
If the inoperative carrier wave that reduces after N the magnitude is identical in quality with the work carrier channel, preferentially report the channel information of work carrier wave.
In the enforcement, the magnitude deviation of reporting channel information can: base station side and subscriber equipment are made an appointment; Or, be that base station side is passed through high-rise configuration and/or physical layer control signaling indication UE.
In the enforcement, can further include:
Subscriber equipment uses the mode of switch bit indication to identify the carrier index that reports when the channel information of the top-quality carrier wave of reporting channel;
Or subscriber equipment uses the mode of bit indication to identify the carrier index that reports when the channel information of the top-quality carrier wave of reporting channel.
Further, can judge for the switching of intercarrier in order to make the channel information that reports, to improve the accuracy of downlink data dispatching transmission, can further include in the enforcement:
Step 503 when reporting inoperative carrier channel information by second feedback model, can comprise:
To be better than in the inoperative carrier wave adding work carrier wave of work carrier wave, by the feedback model periodic feedback channel information of work carrier wave;
Or, the channel information that comprises one of broad-band channel information, sub-band channel information, PMI information, RI information or its combination on the inoperative carrier wave that uses aperiodic feedback model to report to be better than the work carrier wave.
Embodiment two
Fig. 6 is the implementing procedure schematic diagram of UE side in the carrier wave switching, as shown in the figure, can comprise:
The carrier wave number M that step 602, UE are known magnitude deviation X, need be reported;
In this step, UE can arrange with the base station, when perhaps knowing that by high level configuration, physical layer signaling the work carrier wave of base station indication and inoperative carrier wave are notified the channel information of top-quality carrier wave in the choice, need magnitude deviation X and report carrier wave number M;
In processing procedure, comprise two parts: work carrier wave and inoperative carrier wave, then, change step 604 pair inoperative carrier wave over to and handle, the channel information of work carrier wave is not handled, change step 605 then over to;
The channel information of step 604, inoperative carrier wave reduces X magnitude;
The channel information of step 606, carrier wave that the UE feedback channel quality is good;
Below step 604,605,606 is comprehensively illustrated.
When UE selected to report the channel information of work carrier wave and inoperative carrier wave, the result according to measuring according to magnitude difference X, at first reduced the processing of X magnitude to the channel information of inoperative carrier wave.M best carrier wave of selective channel information from the work carrier wave measured and inoperative carrier wave, feedback chooses the true magnitude of carrier wave, and wherein feedback content can comprise: selects quantized channel information CQI (4Mbits) in M the carrier wave and the carrier wave indication information of selection etc.Wherein the principle of Cai Yonging and carrier wave indication example can be as follows:
1, principle is: if degradation back DL Component Carrier is identical with the CQI magnitude of Additional Component Carrier correspondence, so preferentially report the channel information of DL Component Carrier.
2, when indication carrier wave, use the method for bitmap to indicate selected carrier wave.
M=2 for example, having selected carrier wave 1,2 is DL Component Carrier; Carrier wave 3,4,5 is Additional Component Carrier, the X=4 of high-rise configuration or the indication of physical layer control signaling.
Suppose: 5 carrier channel information that UE measures are respectively: CQI magnitude 6,11,7,10,4, the inoperative carrier wave demoted after handling be: 6,11,3,6,0, according to priority principle, the channel information of same magnitude priority feedback DL Component Carrier for example, the feedback carrier of selecting is 1,2 channel information, be 4,2 channel information and do not select feedback carrier, CQI magnitude after the selection is respectively: 6,11, (8bits), use the method for bitmap to be designated as: 11000 (5bits).
For Additional Component Carrier feedback, the channel magnitude before can feedback processing during feedback, the channel magnitude after also can feedback processing is handled the real inoperative carrier channel information that obtains by the base station.For example, if the CQI magnitude of measuring 6,11,13,10,4 is 6,11,9,6,0 behind the degradation, the carrier wave of the feedback of selection is carrier wave 2,4, and corresponding channel information is 11,13 (8bits), and the method for the bitmap of use refers to 01100 (5bits).
Based on same inventive concept, a kind of base station equipment, subscriber equipment also are provided in the embodiment of the invention, because the principle that these equipment are dealt with problems is similar to the report process method of the receiving handling method of channel information, channel information, therefore the enforcement of these equipment can repeat part and not give unnecessary details referring to the enforcement of method.
Fig. 7 is the base station equipment structural representation, as shown in the figure, can comprise in the base station equipment:
Carrier wave determination module 701 is used for determining work carrier wave and inoperative carrier wave at whole carrier waves;
First indicating module 702, be used for first feedback model to subscriber equipment indication work carrier wave and inoperative carrier channel information, at subscriber equipment during according to the described first feedback model feedback channel information, the work carrier wave that subscriber equipment will be indicated in first feedback model by base station side and the magnitude deviation of inoperative carrier wave reporting channel information be the indication processing of demoting to inoperative carrier wave measured channel information;
Receiver module 703 be used for to receive work carrier wave and the channel information of inoperative carrier wave that UE reports, and described channel information is that UE reports according to first feedback model of indicating.
In the enforcement, first indicating module can be further used for comprising in first feedback model of indication: the magnitude deviation of the reporting channel information of inoperative carrier wave; The number of the carrier wave that the channel quality that need report is best.
Report expense in order to save, in the enforcement, first indicating module can also be further used for also comprising in first feedback model of indication: the inoperative carrier wave is according to order information RI=1, the channel information of feedback code word; And/or, inoperative carrier wave feedback broad-band channel information.
In the enforcement, first indicating module can be further used for indicating the magnitude deviation of the reporting channel information that base station side and subscriber equipment make an appointment; Or, by the magnitude deviation of high level configuration and/or physical layer control signaling indication UE reporting channel information.
In the enforcement, when first indicating module can be further used for indicating subscriber equipment to the channel information of the top-quality carrier wave of base station reporting channel, use the mode of switch bit indication to identify the carrier index that reports; Or the indication subscriber equipment uses the mode of bit indication to identify the carrier index that reports during to the channel information of the top-quality carrier wave of base station reporting channel.
In the enforcement, base station equipment can further include:
Second indicating module 704, be used for when determining that according to the channel information that reports by first feedback model channel information of inoperative carrier wave is better than the channel information of work carrier wave, second feedback model to UE indication inoperative carrier channel information, wherein, the inoperative carrier channel precision of information that reports by described second feedback model of UE is greater than the inoperative carrier channel precision of information that reports by first feedback model.
In the enforcement, second indicating module can be further used for indicating in second feedback model: will be better than in the inoperative carrier wave adding work carrier wave of work carrier wave, by the feedback model periodic feedback channel information of work carrier wave; Or, the channel information that comprises one of broad-band channel information, sub-band channel information, PMI information, RI information or its combination of the inoperative carrier wave that uses aperiodic feedback model to report to be better than the work carrier wave.
In the enforcement, base station equipment can further include:
Handover module 705 is used for behind the channel information that receives the inoperative carrier wave that UE reports by second feedback model; When determining that according to the channel information that reports by second feedback model channel information of inoperative carrier wave is better than the channel information of work carrier wave, the inoperative carrier wave that will be better than the work carrier wave joins in the work carrier set, and in the enterprising line data scheduling of this carrier wave.
Fig. 8 is the user device architecture schematic diagram, as shown in the figure, can comprise among the UE:
Carrier wave determination module 801 is used for determining work carrier wave and inoperative carrier wave according to the indication of base station side at whole carrier waves;
In the enforcement, can comprise in first reporting module:
Carrier wave selected cell 8022 is used for from work carrier wave and the top-quality M of an inoperative carrier wave selective channel carrier wave, and described M number is the channel information number of the best carrier wave of the channel quality that reports of needs that base station side is indicated;
In the enforcement, report unit further to be further used for when reporting the channel information of a top-quality M carrier wave, the inoperative carrier wave reports the single codeword channel information according to the pattern of RI=1; And/or, inoperative carrier wave feedback broad-band channel information.
In concrete the enforcement, if the inoperative carrier wave that the carrier wave selected cell can be further used for reducing after N the magnitude is identical in quality with the carrier channel of working, preferentially select the work carrier wave.
In concrete the enforcement, degraded cell can be further used for adopting the magnitude deviation of the reporting channel information that base station side and subscriber equipment make an appointment; Or, adopt base station side by the magnitude deviation of the reporting channel information of high-rise configuration and/or the indication of physical layer control signaling.
In concrete the enforcement, report the unit can be further used for when the channel information of the top-quality carrier wave of reporting channel, use the mode of switch bit indication to identify the carrier index that reports; Or subscriber equipment uses the mode of bit indication to identify the carrier index that reports when the channel information of the top-quality carrier wave of reporting channel.
In the enforcement, in UE, can further include:
In the enforcement, second reporting module can be further used for when reporting inoperative carrier channel information by second feedback model, will be better than in the inoperative carrier wave adding work carrier wave of work carrier wave, by the feedback model periodic feedback channel information of work carrier wave; Or, the channel information that comprises one of broad-band channel information, sub-band channel information, PMI information, RI information or its combination on the inoperative carrier wave that uses aperiodic feedback model to report to be better than the work carrier wave.
For the convenience of describing, the each several part of the above device is divided into various modules with function or the unit is described respectively.Certainly, when enforcement is of the present invention, can in same or a plurality of softwares or hardware, realize the function of each module or unit.
As seen from the above-described embodiment, in the invention process, in LTE-A multicarrier system, select feedback for the carrier wave in DLComponent Carrier and the Additional Component Carrier at same interval, before selecting, Additional Component Carrier is measured the channel information that obtains and do certain degradation processing, and then compare with DL Component Carrier channel information, select to handle M best carrier wave of back channel information, feedback chooses the actual measurement magnitude of carrier wave afterwards.
Adopt the scheme in the embodiment of the invention, can keep the consistency with existing LTE system, consider that the expense of present control channel has provided the example of 11bits;
Further, report a plurality of CQI at interval same reporting, guarantee that the base station end obtains more channel information, better guarantees the frequency selectivity gain optimization of system;
Further, by guaranteeing to obtain effective DL Component Carrier and Additional Component Carrier channel information, and when Additional Component Carrier performance is enough good, consider feedback, namely save the limited feedback resource, guaranteed when carrier wave switches the acquisition to Additional Component Carrier channel information again.
By the technical scheme that provides in the embodiment of the invention, the base station can obtain work carrier wave and inoperative carrier channel information simultaneously, namely guarantee the normal transmission of work carrier wave downlink data, guarantee again to obtain channel quality information inoperative carrier channel information preferably, so that the activation of the switching between the carrier wave and inoperative carrier wave is used.Simply according to same Standard Selection, may be because reporting too much inoperative carrier channel information, and influence the acquisition number of times of the channel conditions of work carrier wave, the inaccurate problem that finally causes downlink data dispatching to transmit.
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 complete hardware embodiment, complete software embodiment or in conjunction with the form of the embodiment of software and hardware aspect.And the present invention can adopt the form of the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is that reference is described according to 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 by 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 energy 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 and carry out the sequence of operations step producing computer implemented processing at computer or other programmable devices, thereby be 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 in the instruction that computer or other programmable devices are carried out.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic creative concept of cicada, then can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Claims (32)
1. the receiving handling method of a multicarrier system channel information is characterized in that, comprises the steps:
Base station side is all being determined work carrier wave and inoperative carrier wave in the carrier wave;
Base station side is to first feedback model of subscriber equipment indication work carrier wave and inoperative carrier channel information, comprises the indication that the magnitude deviation that makes work carrier wave that subscriber equipment indicates by base station side and inoperative carrier wave reporting channel information in first feedback model is demoted and handled inoperative carrier wave measured channel information in described first feedback model;
Base station side receives the work carrier wave of user equipment to report and the channel information of inoperative carrier wave, and described channel information is that subscriber equipment reports according to first feedback model of indicating.
2. the method for claim 1 is characterized in that, described first feedback model comprises:
The magnitude deviation of the reporting channel information of inoperative carrier wave;
The number of the carrier wave that the channel quality that need report is best.
3. method as claimed in claim 2 is characterized in that, described first feedback model further comprises:
The inoperative carrier wave is indicated RI=1 according to order, the channel information of feedback code word;
And/or, inoperative carrier wave feedback broad-band channel information.
4. method as claimed in claim 2 is characterized in that, the magnitude deviation of described reporting channel information is that base station side and subscriber equipment are made an appointment;
Or, be that base station side is passed through high-rise configuration and/or physical layer control signaling indication subscriber equipment.
5. method as claimed in claim 2 is characterized in that, further comprises:
Base station configuration and indication subscriber equipment use the mode of switch bit indication to identify the carrier index that reports during to the channel information of the top-quality carrier wave of base station reporting channel;
Or base station configuration and indication subscriber equipment use the mode of bit indication to identify the carrier index that reports during to the channel information of the top-quality carrier wave of base station reporting channel.
6. as the arbitrary described method of claim 1 to 5, it is characterized in that, further comprise:
When determining that according to the channel information that reports by first feedback model channel information of inoperative carrier wave is better than the channel information of work carrier wave, base station side is to second feedback model of subscriber equipment indication inoperative carrier channel information, wherein, the inoperative carrier channel precision of information that reports by described second feedback model of subscriber equipment is greater than the inoperative carrier channel precision of information that reports by first feedback model.
7. method as claimed in claim 6 is characterized in that, described second feedback model is:
To be better than in the inoperative carrier wave adding work carrier wave of work carrier wave, by the feedback model periodic feedback channel information of work carrier wave;
Or, the channel information that comprises one of broad-band channel information, sub-band channel information, pre-coding matrix indication PMI information, order indication RI information or its combination of the inoperative carrier wave that uses aperiodic feedback model to report to be better than the work carrier wave.
8. method as claimed in claim 6 is characterized in that, further comprises:
Base station side receives the channel information of the inoperative carrier wave that subscriber equipment reports by second feedback model;
When determining that according to the channel information that reports by second feedback model channel information of inoperative carrier wave is better than the channel information of work carrier wave, the inoperative carrier wave that will be better than the work carrier wave joins in the work carrier set, and in the enterprising line data scheduling of this carrier wave.
9. the report process method of a multicarrier system channel information is characterized in that, comprises the steps:
Subscriber equipment is all being determined work carrier wave and inoperative carrier wave in the carrier wave according to the indication of base station side;
After subscriber equipment has been indicated first feedback model of work carrier wave and inoperative carrier channel information in the base station side configuration, the work carrier wave of indicating in first feedback model by base station side and the magnitude deviation of inoperative carrier wave reporting channel information be to processings of demoting of the channel information of the inoperative carrier wave measured, and press the described first feedback model reporting channel information.
10. method as claimed in claim 9 is characterized in that, when subscriber equipment reports the channel information of work carrier wave and inoperative carrier wave by first feedback model, comprising:
According to the result who measures, according to the magnitude deviation of the reporting channel information of inoperative carrier wave, the channel information indication of inoperative carrier wave is reduced the processing of N magnitude, described N is the magnitude deviation of the reporting channel information of the base station side inoperative carrier wave of indicating;
The top-quality M of a selective channel carrier wave from work carrier wave and inoperative carrier wave, described M number are the number of the best carrier wave of the channel quality that reports of needs that base station side is indicated.
11. method as claimed in claim 10 is characterized in that, when subscriber equipment reports the channel information of work carrier wave and inoperative carrier wave by first feedback model, further comprises:
The inoperative carrier wave reports the single codeword channel information according to the pattern of RI=1;
And/or, inoperative carrier wave feedback broad-band channel information.
12. method as claimed in claim 10 is characterized in that, when subscriber equipment reports the channel information of work carrier wave and inoperative carrier wave by first feedback model, further comprises:
If the inoperative carrier wave that reduces after N the magnitude is identical in quality with the work carrier channel, preferentially report the channel information of work carrier wave.
13. method as claimed in claim 10 is characterized in that, the magnitude deviation of described reporting channel information is:
Base station side and subscriber equipment are made an appointment;
Or, be that base station side is passed through high-rise configuration and/or physical layer control signaling indication subscriber equipment.
14. method as claimed in claim 10 is characterized in that, further comprises:
Subscriber equipment uses the mode of switch bit indication to identify the carrier index that reports when the channel information of the top-quality carrier wave of reporting channel;
Or subscriber equipment uses the mode of bit indication to identify the carrier index that reports when the channel information of the top-quality carrier wave of reporting channel.
15. as the arbitrary described method of claim 9 to 14, it is characterized in that, further comprise:
When the base station side indication reports inoperative carrier channel information by second feedback model, subscriber equipment reports inoperative carrier channel information by second feedback model, wherein, the inoperative carrier channel precision of information that reports by described second feedback model of subscriber equipment is greater than the inoperative carrier channel precision of information that reports by first feedback model.
16. method as claimed in claim 15 is characterized in that, when reporting inoperative carrier channel information by second feedback model, comprising:
To be better than in the inoperative carrier wave adding work carrier wave of work carrier wave, by the feedback model periodic feedback channel information of work carrier wave;
Or, the channel information that comprises one of broad-band channel information, sub-band channel information, PMI information, RI information or its combination on the inoperative carrier wave that uses aperiodic feedback model to report to be better than the work carrier wave.
17. a base station equipment is characterized in that, comprising:
The carrier wave determination module is used for determining work carrier wave and inoperative carrier wave at whole carrier waves;
First indicating module, be used for first feedback model to subscriber equipment indication work carrier wave and inoperative carrier channel information, comprise in described first feedback model that the magnitude deviation that makes work carrier wave that subscriber equipment indicates by base station side and inoperative carrier wave reporting channel information in first feedback model is to the demote indication of processing of inoperative carrier wave measured channel information;
Receiver module is used for receiving the work carrier wave of user equipment to report and the channel information of inoperative carrier wave, and described channel information is that subscriber equipment reports according to first feedback model of indicating.
18. base station equipment as claimed in claim 17 is characterized in that, described first indicating module is further used for comprising in first feedback model of indication: the magnitude deviation of the reporting channel information of inoperative carrier wave; The number of the carrier wave that the channel quality that need report is best.
19. base station equipment as claimed in claim 18 is characterized in that, described first indicating module is further used for also comprising in first feedback model of indication: the inoperative carrier wave is according to order information RI=1, the channel information of feedback code word; And/or, inoperative carrier wave feedback broad-band channel information.
20. base station equipment as claimed in claim 18 is characterized in that, described first indicating module is further used for indicating the magnitude deviation of the reporting channel information that base station side and subscriber equipment make an appointment; Or, by the magnitude deviation of high level configuration and/or physical layer control signaling indication user equipment to report channel information.
21. base station equipment as claimed in claim 18, it is characterized in that, when described first indicating module is further used for indicating subscriber equipment to the channel information of the top-quality carrier wave of base station reporting channel, use the mode of switch bit indication to identify the carrier index that reports; Or the indication subscriber equipment uses the mode of bit indication to identify the carrier index that reports during to the channel information of the top-quality carrier wave of base station reporting channel.
22. as the arbitrary described base station equipment of claim 17 to 21, it is characterized in that, further comprise:
Second indicating module, be used for when determining that according to the channel information that reports by first feedback model channel information of inoperative carrier wave is better than the channel information of work carrier wave, second feedback model to subscriber equipment indication inoperative carrier channel information, wherein, the inoperative carrier channel precision of information that reports by described second feedback model of subscriber equipment is greater than the inoperative carrier channel precision of information that reports by first feedback model.
23. base station equipment as claimed in claim 22, it is characterized in that, described second indicating module is further used for indicating in second feedback model: will be better than in the inoperative carrier wave adding work carrier wave of work carrier wave, by the feedback model periodic feedback channel information of work carrier wave; Or, the channel information that comprises one of broad-band channel information, sub-band channel information, PMI information, RI information or its combination of the inoperative carrier wave that uses aperiodic feedback model to report to be better than the work carrier wave.
24. base station equipment as claimed in claim 22 is characterized in that, further comprises:
Handover module is used for behind the channel information that receives the inoperative carrier wave that subscriber equipment reports by second feedback model; When determining that according to the channel information that reports by second feedback model channel information of inoperative carrier wave is better than the channel information of work carrier wave, the inoperative carrier wave that will be better than the work carrier wave joins in the work carrier set, and in the enterprising line data scheduling of this carrier wave.
25. a subscriber equipment is characterized in that, comprising:
The carrier wave determination module is used for determining work carrier wave and inoperative carrier wave according to the indication of base station side at whole carrier waves;
First reporting module, be used for after base station side has been indicated first feedback model of work carrier wave and inoperative carrier channel information, the work carrier wave of indicating in first feedback model by base station side and the magnitude deviation of inoperative carrier wave reporting channel information be to processings of demoting of the channel information of the inoperative carrier wave measured, and press the described first feedback model reporting channel information.
26. subscriber equipment as claimed in claim 25 is characterized in that, described first reporting module comprises:
Degraded cell, be used for according to the result who measures, according to the magnitude deviation of the reporting channel information of inoperative carrier wave, the channel information indication of inoperative carrier wave is reduced the processing of N magnitude, described N is the magnitude deviation of the reporting channel information of the base station side configuration inoperative carrier wave of indicating;
The carrier wave selected cell is used for from work carrier wave and the top-quality M of an inoperative carrier wave selective channel carrier wave, and described M number is the channel information number of the best carrier wave of the channel quality that reports of needs that base station side is indicated;
Report the unit, be used for reporting the channel information of a top-quality M carrier wave.
27. subscriber equipment as claimed in claim 26 is characterized in that, the described unit that reports is further used for when reporting the channel information of a top-quality M carrier wave, and the inoperative carrier wave reports the single codeword channel information according to the pattern of RI=1; And/or, inoperative carrier wave feedback broad-band channel information.
28. subscriber equipment as claimed in claim 26 is characterized in that, if the inoperative carrier wave that described carrier wave selected cell is further used for reducing after N the magnitude is identical in quality with the carrier channel of working, preferentially selects the work carrier wave.
29. subscriber equipment as claimed in claim 26 is characterized in that, described degraded cell is further used for adopting the magnitude deviation of the reporting channel information that base station side and subscriber equipment make an appointment; Or, adopt base station side by the magnitude deviation of the reporting channel information of high-rise configuration and/or the indication of physical layer control signaling.
30. subscriber equipment as claimed in claim 26 is characterized in that, the described unit that reports is further used for when the channel information of the top-quality carrier wave of reporting channel, uses the mode of switch bit indication to identify the carrier index that reports; Or subscriber equipment uses the mode of bit indication to identify the carrier index that reports when the channel information of the top-quality carrier wave of reporting channel.
31. as the arbitrary described subscriber equipment of claim 25 to 30, it is characterized in that, further comprise:
Second reporting module, be used for when the base station side indication reports inoperative carrier channel information by second feedback model, report inoperative carrier channel information by second feedback model, wherein, the inoperative carrier channel precision of information that reports by described second feedback model is greater than the inoperative carrier channel precision of information that reports by first feedback model.
32. subscriber equipment as claimed in claim 31, it is characterized in that, described second reporting module is further used for when reporting inoperative carrier channel information by second feedback model, to be better than in the inoperative carrier wave adding work carrier wave of work carrier wave, by the feedback model periodic feedback channel information of work carrier wave; Or, the channel information that comprises one of broad-band channel information, sub-band channel information, PMI information, RI information or its combination on the inoperative carrier wave that uses aperiodic feedback model to report to be better than the work carrier wave.
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| CN112218327B (en) * | 2019-07-11 | 2024-05-17 | 普天信息技术有限公司 | Channel quality measurement reporting method and terminal of novel wireless broadband communication system |
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