CN102595476A - Method and device for reporting channel state information - Google Patents
Method and device for reporting channel state information Download PDFInfo
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- CN102595476A CN102595476A CN2011100038217A CN201110003821A CN102595476A CN 102595476 A CN102595476 A CN 102595476A CN 2011100038217 A CN2011100038217 A CN 2011100038217A CN 201110003821 A CN201110003821 A CN 201110003821A CN 102595476 A CN102595476 A CN 102595476A
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Abstract
The invention provides a method and a device for reporting channel state information (CSI). The method comprises the following steps of: transmitting a triggering command to the UE, wherein the triggering command is used for enabling a UE (User Equipment) to periodically report the CSI corresponding to at least one carrier; and periodically receiving the CSI corresponding to at least one carrier periodically reported by the UE on a physical uplink shared channel (PUSCH) according to the triggering command. In the embodiment of the invention, after receiving the triggering command sent by an eNB (e-Node B), the UE periodically reports the CSI corresponding to multiple carriers in the PUSCH, since the resource of the PUSCH is abundant, the CSI corresponding to multiple carriers can be reported on the PUSCH, thus, the reporting precision of the CSI in a carrier convergence scene is improved.
Description
Technical field
The embodiment of the invention relates to communication technical field, relates in particular to a kind of method and apparatus of reporting status information of channel.
Background technology
LTE (Long Term Evolution; Long Term Evolution) technology is the evolution of 3G; It improves and has strengthened the aerial access technology of 3G; Adopt OFDMA (Orthogonal Frequency DivisionMultiple Access, OFDM) to substitute the long-term CDMA (CodeDivision Multiple Access, code division multiple access) that uses of 3GPP as multiple access technology; And adopt MIMO (Multiple-Input Multiple-Out-put, multiple-input and multiple-output) technology and adaptive technique to improve data transfer rate and systematic function in a large number.
LTE-A (LTE-Advance, the evolution of LTE) is the further enhancing of LTE technology, and the LTE-A system has the bandwidth requirement higher than LTE system.In order to satisfy the requirement of LTE-A, support peak data rate up to 1G, 3GPP LTE-A system can converge carrier wave that (ComponentAggregation abbreviates as: CA) technology is as the method for its expanding system bandwidth.It is exactly that (Component Carrier abbreviates as: CC) pool the carrier wave of a bigger bandwidth, to support high data rate with a plurality of composition carrier waves that carrier wave converges.At present, the system bandwidth of LTE-A can be formed carrier wave by maximum 5 and converges and form.
In the LTE-A system, UE (User Equipment, subscriber equipment) need be to eNB (eNodeB; The base station) feeds back some channel condition informations (Channel State Information; Abbreviate as: CSI), wherein CSI comprises CQI (Channel Quality Indicator, channel quality indication), PMI (PrecodingMatrix Indicator; Pre-coding matrix is indicated) and RI (Rank Indicator, order indication) etc.ENB confirms that according to the CSI of feedback (Modulation and CodingScheme abbreviates as descending employed modulation coding mode: MCS), thereby realize that (Adaptive Modulation andCoding abbreviates as Adaptive Modulation and Coding; AMC).
In LTE Rel-8 (LTE the 8th version), each UE has only a carrier wave, the UE descending CSI that reporting measurement arrives in the PUCCH of up channel (Physical Uplink Control Channel, Physical Uplink Control Channel).And converge under the scene at the carrier wave of LTE-A Rel-10 (LTE-A the 10th version); Each UE can support 5 descending composition carrier waves at most; Just each UE might have 5 DL CC (Downlink Component Carrier at most; Descending composition carrier wave) periodicity CSI need report, and feedback quantity is bigger.Yet; Has only UL PCC (Uplink Primary ComponentCarrier; The up main carrier wave of forming) PUCCH is arranged, because the PUCCH finite capacity can't satisfy UE and report the periodicity CSI of maximum 5 DL CC to give eNB at the PUCCH of UL PCC; Thereby the capacity that needs to seek new solution compressed feedback amount or expand feedback channel, under the CA scene, possibly report the periodicity CSI of maximum 5 DL CC to give the collision problem that eNB was caused to solve UE.
In order to address the above problem; A solution has been proposed in the prior art; UE is when reporting the periodicity CSI of a plurality of DL CC; A plurality of DL CC are sorted according to priority, only in the PUCCH of UL PCC, report the CSI of the highest DL CC of priority, and the CSI of other lower priorities DL CC is abandoned.Thus, existing CSI with part DL CC directly abandons reports mode to reduce to report precision, influence the scheduling of eNB.
Summary of the invention
The embodiment of the invention provides a kind of method and apparatus of reporting status information of channel, to improve the precision that reports that carrier wave converges CSI in the scene.
The embodiment of the invention provides the method for a kind of CSI of reporting, comprising:
Send the trigger command that is used to make the corresponding CSI of at least one carrier wave of said UE periodic report to UE;
Cycle receives said UE according to said at least one carrier wave corresponding CSI of said trigger command at Physical Uplink Shared Channel PUSCH periodic report.
The embodiment of the invention provides the method for a kind of CSI of reporting, comprising:
Receive the trigger command that is used to make the corresponding CSI of at least one carrier wave of UE periodic report that send the base station;
According to the CSI of said trigger command in said at least one carrier wave correspondence of Physical Uplink Shared Channel PUSCH periodic report.
The embodiment of the invention provides the method for a kind of CSI of reporting, comprising:
Be used to make said UE to report the trigger command of the corresponding CSI of at least one carrier wave to the UE transmission;
Receive said UE according to said trigger command, the corresponding CSI of at least twice said at least one carrier wave that reports at Physical Uplink Shared Channel PUSCH.
The embodiment of the invention provides the method for a kind of CSI of reporting, comprising:
Receiving being used to that the base station sends makes UE report the trigger command of the corresponding CSI of at least one carrier wave;
Report the corresponding CSI of at least twice said at least one carrier wave according to said trigger command at Physical Uplink Shared Channel PUSCH.
The embodiment of the invention provides the device of a kind of CSI of reporting, and said device is contained in the base station, and said device comprises:
First sending module is used for sending the trigger command that is used to make the corresponding CSI of at least one carrier wave of said UE periodic report to UE;
First receiver module, be used for the cycle receive said UE according to said trigger command at the corresponding CSI of said at least one carrier wave of Physical Uplink Shared Channel PUSCH periodic report.
The embodiment of the invention provides the device of a kind of CSI of reporting, and said device is contained in UE, and said device comprises:
Second receiver module is used to receive the trigger command that is used to make the corresponding CSI of at least one carrier wave of UE periodic report that send the base station;
Second sending module is used for according to said trigger command at the corresponding CSI of said at least one carrier wave of Physical Uplink Shared Channel PUSCH periodic report.
The embodiment of the invention provides the device of a kind of CSI of reporting, and said device is contained in the base station, and said device comprises:
The 3rd sending module is used for being used to make said UE to report the trigger command of the corresponding CSI of at least one carrier wave to the UE transmission;
The 3rd receiver module is used to receive said UE according to said trigger command, the corresponding CSI of at least twice said at least one carrier wave that reports at Physical Uplink Shared Channel PUSCH.
The embodiment of the invention provides the device of a kind of CSI of reporting, and said device is contained in UE, and said device comprises:
The 4th receiver module is used to receive being used to that the base station sends make UE report the trigger command of the corresponding CSI of at least one carrier wave;
The 4th sending module is used for reporting the corresponding CSI of at least twice said at least one carrier wave according to said trigger command at Physical Uplink Shared Channel PUSCH.
The method and apparatus of the reporting status information of channel of the embodiment of the invention; ENB sends to UE and is used to make UE to report the trigger command of the corresponding CSI of at least one carrier wave; After UE receives this trigger command, according to the CSI of this trigger command at least one carrier wave correspondence of PUSCH periodic report.In the embodiment of the invention; After UE receives the trigger command of eNB transmission; The corresponding CSI of a plurality of carrier waves of periodic report in PUSCH; Because the resource among the PUSCH is more, so UE can realize the CSI that reports a plurality of carrier waves corresponding in PUSCH, improved the precision that reports that carrier wave converges CSI in the scene thus.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention; The accompanying drawing of required use is done an introduction simply in will describing embodiment below; Obviously, the accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 reports the flow chart of the method embodiment one of CSI for the present invention;
Fig. 2 reports the flow chart of the method embodiment two of CSI for the present invention;
Fig. 3 reports the flow chart of the method embodiment three of CSI for the present invention;
Fig. 4 reports the sketch map of CSI for UE among the embodiment shown in Figure 3;
Fig. 5 reports another sketch map of CSI for UE among the embodiment shown in Figure 3;
Fig. 6 reports the flow chart of the method embodiment four of CSI for the present invention;
Fig. 7 reports the flow chart of the method embodiment five of CSI for the present invention;
Fig. 8 reports the sketch map of the device embodiment one of CSI for the present invention;
Fig. 9 reports the sketch map of the device embodiment two of CSI for the present invention;
Figure 10 reports the sketch map of the device embodiment three of CSI for the present invention;
Figure 11 reports the sketch map of the device embodiment four of CSI for the present invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer; To combine the accompanying drawing in the embodiment of the invention below; Technical scheme in the embodiment of the invention is carried out clear, intactly description; Obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Fig. 1 reports the flow chart of the method embodiment one of CSI for the present invention, and as shown in Figure 1, this method comprises:
The carrier wave that the embodiment of the invention can be applied to LTE-A Rel-10 converges in the process that reports CSI in the scene, does not also fix under this scene certainly at present, and reporting under the environment of other multicarrier CSI also can be used present embodiment.The executive agent of present embodiment is eNB.
Converge in the scene at carrier wave, the CSI that UE has 5 DL CC at most need report to eNB.ENB sends trigger command to UE, and this trigger command is used to make the corresponding CSI of at least one carrier wave of UE periodic report, and specifically this trigger command can make UE report the corresponding CSI of a plurality of carrier waves.
In existing LTE-A system, reporting of CSI comprises trigger-type and periodically reports two kinds; Wherein, trigger-type reports mainly and on the PUSCH resource, feeds back, and periodically reports mainly and on PUCCH, feeds back.In existing trigger-type reports, UE after receiving triggering, only report one time aperiodic CSI, just finish then to report.
And present embodiment is different from existing trigger-type and periodically reports, and in the present embodiment, eNB is to be used to indicate UE to carry out periodicity report to the trigger command that UE sends, and wherein UE can periodic report cycle CSI, also can periodic report CSI aperiodic.This trigger command for example can be the permission of the uplink scheduling among PDCCH signaling (UL grant).
UE is behind the trigger command that receives the eNB transmission, at the corresponding CSI of at least one carrier wave of PUSCH periodic report.Wherein UE reports the CSI that activates carrier wave, and the quantity that activates carrier wave maybe be for a plurality of.Then, eNB just receives the CSI that UE reports.
Wherein, when UE reports CSI, the report cycle of used carrier-specific, report the skew and report number of times, be that eNB is from the rrc layer transmitting signaling downwards.If eNB does not issue number of times, then UE can report 1 time or unlimited.
In the embodiment of the invention, eNB sends trigger command to UE, after UE receives this trigger command, and the corresponding CSI of a plurality of carrier waves of periodic report in PUSCH.The embodiment of the invention expands to the CSI of a plurality of carrier waves among the PUSCH and reports, because the resource of PUSCH is abundant than PUCCH, so UE can realize reporting the CSI of a plurality of carrier waves correspondences in PUSCH, has improved the precision that reports that carrier wave converges CSI in the scene thus.
Fig. 2 reports the flow chart of the method embodiment two of CSI for the present invention, and as shown in Figure 2, this method comprises:
The trigger command that is used to make the corresponding CSI of at least one carrier wave of UE periodic report that step 201, reception eNB send.
Present embodiment is corresponding with embodiment shown in Figure 1, and the executive agent of present embodiment is UE.
UE receives the trigger command that eNB sends, and this trigger command is the trigger command described in the step 101 of Fig. 1.
Step 202, according to trigger command at the corresponding CSI of at least one carrier wave of PUSCH periodic report.
UE is according to the trigger command that receives, at the corresponding CSI of a plurality of carrier waves of PUSCH periodic report.Wherein, when UE reports CSI, the report cycle of used carrier-specific, report the skew and report number of times, be that eNB is from the rrc layer transmitting signaling downwards.If eNB does not issue and reports number of times, then UE can report 1 time or unlimited.
In the embodiment of the invention, after UE receives the trigger command of eNB transmission, the corresponding CSI of a plurality of carrier waves of periodic report in PUSCH.The embodiment of the invention expands to the CSI of a plurality of carrier waves among the PUSCH and reports, because the resource of PUSCH is abundant than PUCCH, so UE can realize reporting the CSI of a plurality of carrier waves correspondences in PUSCH, has improved the precision that reports that carrier wave converges CSI in the scene thus.
Fig. 3 reports the flow chart of the method embodiment three of CSI for the present invention, and present embodiment is based on embodiment illustrated in figures 1 and 2, and is as shown in Figure 3, and this method comprises:
Wherein, this trigger command is for can (being designated hereinafter simply as: UL grant) for the permission of the uplink scheduling among PDCCH signaling.Comprise among the UL grant that being used to trigger UE reports the channel quality information of the corresponding CSI of at least one carrier wave (Channel Quality Information abbreviates as: CQI) request field.
UL grant can comprise and be used to trigger first trigger fields of the corresponding CSI of at least one carrier wave of UE periodic report and be used to trigger second trigger fields that UE reports the corresponding CSI of at least one carrier wave.Respectively first trigger fields and second trigger fields are elaborated below.
This first trigger fields comprises: CQI asks (CQI request) field, is shown as the MCS of redundant state, is less than or equal to the value of the Resource Block of first threshold.Concrete: (Common Search Space abbreviates as: when sending CSS), the CQI request field is 0 or 1, and the value of MCS is 29,30 or 31 in the common search space of PDCCH as UL grant; (UE-specific Search Space abbreviates as: when sending USS), the CQI request field is 00 or 01, and the value of MCS is 29,30 or 31 in user's dedicated search space of PDCCH as UL grant.
Second trigger fields comprises: value is 10 or 11 CQI request field.The situation that this second trigger fields is applied to UL grant when in the USS of PDCCH, sending.Need to prove that when comprising second trigger fields among the ULgrant, eNB need be configured second trigger fields through the rrc layer signaling, dispose second trigger fields and be used to trigger the CSI that UE reports at least one carrier wave correspondence.
Below further UL grant and trigger fields wherein are described in detail.
UL grant specifically comprises two kinds of DCI (Downlink Control Information, Downlink Control Information) form 0 (DCI format 0) and DCI format4.The field that table 1 has provided DCI format 0 constitutes.
Table 1 DCI format 0 field
The DCI format that annotates among the 1:PDCCH has 10 kinds, 0 with 1A be wherein two kinds.
Annotate 2:
represent to round up;
expression UL system bandwidth; Be specially the Resource Block (RB, resourceblock) number that comprise.
Annotate 3: also foreclose CRC sometimes, call DCI format 0 to the field before the CRC.
A.UL grant sends in CSS
Among this UL grant; CQI request=0, MCS are redundant state (being that the MCS value is 29,30 or 31); And the RB number (being the RB number of indicating among the RA) that distributes is when being less than or equal to certain value x; Represent that this UL grant is used for triggering the periodic report CSI of present embodiment, the indicated resource of UL grant only is used for this CSI of uplink.Since this moment MCS be redundant state, UE can't come reported data according to the value of current MCS, thus UE when reporting CSI, the value of MCS is with reference to the MCS value among the UL grant of the last time, the i.e. history value of MCS.UE can store a MCS value; When the MCS field among the UL grant that newly receives is effective value (0-28), upgrade this MCS value, when the MCS field among the UL grant that UL newly receives is invalid value (29-31); Do not upgrade this MCS value, promptly preserve the last effectively history value.Under this situation, promptly be equivalent to comprise first trigger fields among the aforesaid UL grant.
And when CQI request=1, expression triggers aperiodic CSI and reports, and does not report otherwise expression does not trigger aperiodic CSI.And when CQI request=1, also can indicate UE only to send CSI and do not send user data (data) aperiodic, this moment, MCS was set to redundant state, and the RB that distributes is less than or equal to 4.
B.UL grant sends in USS
B1. when CQI request=00, MCS be redundant state, and the RB number that distributes representes that this UL grant is used for triggering the periodic report CSI of present embodiment when being less than or equal to certain value x, the indicated resource of UL grant only is used for this CSI of uplink.Since this moment MCS be redundant state, UE can't come reported data according to the value of current MCS, thus UE when reporting CSI, the value of MCS is with reference to the MCS value among the UL grant of the last time.Under this situation, promptly be equivalent to comprise first trigger fields among the aforesaid UL grant.
And when CQI request=01, expression triggers aperiodic CSI and reports, and does not report otherwise expression does not trigger aperiodic CSI.And when CQI request=01, also can indicate UE only to send CSI and do not send user data (data) aperiodic, this moment, MCS was set to redundant state, and the RB that distributes is less than or equal to 4.
B2. when CQI request=10 or 11, dispose the periodic report CSI that this UL grant of this STA representation is used for triggering present embodiment through RRC, the indicated resource of UL grant only is used for this CSI of uplink.Under this situation, promptly be equivalent to comprise second trigger fields among the aforesaid UL grant.
Further, the RB number being less than or equal to certain value x describes; Wherein, this definite value x is aforesaid first threshold.This definite value x is relevant with the content of the CSI that requires UE to report; And the content of the CSI that reports is relevant with the pattern that reports, and the pattern that reports mainly is divided into the broadband and reports pattern and choose two kinds of newspaper patterns frequently.
And in the present embodiment, the CRC that is used for triggering the UL grant of UE periodic report CSI uses C-RNTI (Radio Network Temporary Identifier, Radio Network Temporary Identifier) to carry out scrambling.
In a concrete execution mode, eNB can specify the corresponding CSI of carrier wave of UE periodic report predetermined quantity in the trigger command that UE sends; And eNB is that UE divides the carrier wave that is used in the periodic report predetermined quantity the corresponding required resource of CSI.
Need to prove that the present invention does not limit the sequential relationship of step 301 and step 302.
ENB sends to UE and reports parameter can be divided into following two kinds of situation:
First kind: eNB through the rrc layer signaling to UE send each carrier wave at least one carrier wave of periodic report separately report parameter so that UE, reports the corresponding CSI of each carrier wave according to the parameter that reports of each carrier wave.
Concrete; ENB indication UE reports the corresponding CSI of the individual activation carrier wave of n (n≤5), and each carrier wave is with carrier identification CI value representation, and each carrier wave is to reporting parameter; ENB sends to UE by CI value order through the RRC signaling with the parameter that reports of each carrier wave; UE stores the parameter that reports of each carrier wave, and when receiving the RRC signaling, UE will use and report the report parameter of parameter by each activation carrier wave in the CI value sequential update memory in the RRC signaling; UE just can report the corresponding CSI of each carrier wave respectively according to the parameter that reports of each carrier wave then.
Second kind: eNB is used to report one group of a plurality of carrier waves through the rrc layer signaling to the UE transmission and reports parameter, so that UE reports parameter according to this, reports the corresponding CSI of all carrier waves of appointment.
Concrete, eNB indication UE reports the corresponding CSI of the individual activation carrier wave of n (n≤5), and each carrier wave is with carrier identification CI value representation; This n carrier wave just has the n group and reports parameter, and eNB reports the parameter from this n group and selects, and finally obtains one group and reports parameter; When having greatest common divisor between all carrier cycles, the greatest common divisor of selecting all carrier cycles is as report cycle; When not having greatest common divisor between all carrier cycles, select maximum or minimum value in all carrier cycles as report cycle.That selects arbitrary carrier wave reports skew as the skew that reports to be sent; Select to report maximum times in the number of times as the number of times that reports to be sent in all carrier waves.After selecting report cycle, report skew and reporting number of times; With the report cycle of selecting, report skew and report number of times to report parameter to send to UE through the RRC signaling as one group; UE stores the parameter that reports of each carrier wave, when receiving the RRC signaling when having only one group to report parameter, UE will use in the RRC signaling the parameter that reports that reports all activated carrier wave in the improve parameter unification updated stored device; Make UE report parameter, periodic report CSI according to this.
Issue report cycle and report the process of skew specifically to introduce to UE through the rrc layer signaling in the face of eNB down.
Concrete, the base station is notified Icqi/pmi (parameter that is used for computing cycle and skew) to UE through the rrc layer signaling, and UE finds the value of corresponding cycle Np according to the interval at this Icqi/pmi parameter place in the table 2, and calculates skew Noffset.For different patterns, it is Np that the broadband reports the cycle of pattern, and the report cycle of choosing broadband in the newspaper pattern frequently is H*Np; Wherein H=J*K+1 is choosing in the newspaper pattern frequently, and whole broadband is divided into J BP (Bandwidth part; The part bandwidth); Comprise a plurality of subbands among each BP, only select an optimal sub-band (Best SB) to report among each BP, K representes to report the number of times of circulation.Wherein, cycle in the present embodiment and skew are aforesaid report cycle and report skew.
The cycle of table 2 CSI and skew
UE receives the trigger command that eNB sends in the step 301.
According to the report parameter of eNB in the step 302 to the UE transmission, UE periodic report CSI can be divided into following two kinds of situation:
First kind: when UE receive through the rrc layer signaling each carrier wave report parameter after, respectively according to each carrier wave report parameter and trigger command, at the corresponding CSI of each carrier wave of PUSCH periodic report.
ENB sends the parameter that reports report each carrier wave at least one carrier wave through the rrc layer signaling to UE, and UE reports the CSI of each carrier wave correspondence respectively just according to the parameter that reports of each carrier wave.
Second kind: when UE receives through the rrc layer signaling after a group of corresponding a plurality of carrier waves reports parameter, according to reporting parameter and trigger command, at the corresponding CSI of a plurality of carrier waves of PUSCH periodic report.
ENB is used to report one group of a plurality of carrier waves through the rrc layer signaling to the UE transmission and reports parameter, and UE reports parameter according to this then, reports the corresponding CSI of all carrier waves of appointment.
Report the detailed process of CSI to be described in detail in the face of UE down:
If UE receives the trigger command that eNB sends constantly at t, then UE reports parameter to begin to report CSI in t+k1+k2 moment basis; Wherein, k1 is the trigger command entry-into-force time, and k2 is for reporting skew.
For FDD, k1=4; And for TDD, because TDD has different ratio of uplink subframe to downlink subframe configurations, can be for the value of different configuration k1 referring to table 3.
The value of k1 among the table 3 TDD configuration 0-6
Confirmed after k1, k2 and the Np UE periodic report CSI.
Fig. 4 reports the sketch map of CSI for UE among the embodiment shown in Figure 3.Wherein, Np=5ms, reporting number of times is 6, k1=4, k2=0.As shown in Figure 4; UE receives the triggering of UL grant in the t moment (N subframe just); This triggering comes into effect at t+k1+k2 constantly then, promptly begins to report CSI in the N+4 subframe, and every interval 5ms reports once; Report altogether 6 times, promptly report 6 times in N+4 subframe, N+4+5 subframe, N+4+5*2 subframe, N+4+5*3 subframe, N+4+5*4 subframe and N+4+5*5 subframe respectively.
Fig. 5 reports another sketch map of CSI for UE among the embodiment shown in Figure 3.Wherein, Np=5ms, reporting number of times is 6, k1=4, k2=2.As shown in Figure 5; UE receives the triggering of UL grant in the t moment (N subframe just); This triggering comes into effect at t+k1+k2 constantly then, promptly begins to report CSI in the N+4+2 subframe, and every interval 5ms reports once; Report altogether 6 times, promptly report 6 times in N+4+2 subframe, N+4+2+5 subframe, N+4+2+5*2 subframe, N+4+2+5*3 subframe, N+4+2+5*4 subframe and N+4+2+5*5 subframe respectively.
Wherein, will be used to report the subframe of CSI to abbreviate the activation point as, the subframe except activating point is called non-activation point, and two time intervals of activating between the point are cycle Np.
In addition; Need to prove that the RA field among the UL grant is used to indicate the ascending resource that distributes to UE, because eNB triggers once in the embodiment of the invention; UE just sends repeatedly CSI, thereby all reserves the resource that CSI is sent in identical being used in each subframe that activates the some place.
And UE is according to trigger command during at the corresponding CSI of at least one carrier wave of PUSCH periodic report, because MCS is a redundant state, so use the effective value of the last MCS that packet to be reported is carried out modulating-coding; The packet at this place can comprise CSI and/or user data.
Further, the method that provides of present embodiment can also comprise:
Steps A, when UE periodic report CSI, if UE receives new UL grant, then stop current periodic report, and carry out reporting of information according to new UL grant.
Wherein, this new UL grant comprises following any one or multinomial: be used in the new embodiment of the invention periodic report CSI trigger command, existingly be used for triggering aperiodic trigger command that reports and the UL grant that only is used to send data.
For example, UE receives the UL grant that is used for periodic report CSI in the present embodiment, and carries out CSI according to this UL grant; Need carry out reporting for 6 times but also have 4 times imperfect tense when this reports, receive a new UL grant again, then reporting no longer of this continued, and reports CSI and/data according to new UL grant trigger mechanism.
Further, the method that provides of present embodiment can also comprise:
Step B, when UE periodic report CSI; If UE receives the new parameter that reports through the rrc layer signaling; Then when basis triggering next time reports CSI; Report reporting parameters CSI to report parameter to comprise report cycle and report skew according to new, perhaps report parameter to comprise report cycle, report skew and report number of times.
Present embodiment does not limit the sequential relationship between steps A and the step B; And the method that present embodiment provides can not comprise steps A and step B simultaneously.
Concrete; When between twice UL grant, UE receives the new parameter that reports through the rrc layer transmitting signaling downwards, then according to first time during UL grant periodic report CSI; Still according to the original old parameter that reports; When UE according to second time during UL grant periodic report CSI, the new parameter that reports just comes into force, UE uses the new reporting parameters CSI that reports.
In the embodiment of the invention, eNB sends the trigger command that is used to indicate UE periodic report CSI to UE, after UE receives the trigger command of eNB transmission, and the corresponding CSI of a plurality of carrier waves of periodic report in PUSCH.The embodiment of the invention expands to the CSI of a plurality of carrier waves among the PUSCH and reports, because the resource of PUSCH is abundant than PUCCH, so UE can realize reporting the CSI of a plurality of carrier waves correspondences in PUSCH, has improved the precision that reports that carrier wave converges CSI in the scene thus.In addition, in the embodiment of the invention, UE receives once and triggers, and just can repeatedly report CSI; And need repeatedly report CSI in the prior art time, just need repeatedly trigger, frequently reporting in the process of CSI at needs thus, the embodiment of the invention can be saved the expense of sending the PDCCH signaling that triggers.
Fig. 6 reports the flow chart of the method embodiment four of CSI for the present invention, and as shown in Figure 6, this method comprises:
The carrier wave that the embodiment of the invention can be applied to LTE-A Rel-10 converges in the process that reports CSI in the scene.The executive agent of present embodiment is eNB.
ENB sends trigger command to UE, and this trigger command is used to make UE to report the corresponding CSI of one or more carrier waves.
After UE receives the trigger command of eNB transmission, report at least twice eNB to require the corresponding CSI of at least one carrier wave that reports at PUSCH.
In the present embodiment, UE reports repeatedly CSI after receiving and once triggering.And UE reports the mode of CSI for many times, can be periodic report, also can be for reporting aperiodic.
Need to prove, the concrete setting of the trigger command in the present embodiment, UE carries out the mode of periodic report, can repeat no more at this referring to the specific descriptions among Fig. 1-embodiment illustrated in fig. 5.
In the embodiment of the invention, eNB sends to UE and is used to indicate UE to report the trigger command of the corresponding CSI of at least one carrier wave, and UE repeatedly reports this CSI after receiving the trigger command of eNB transmission in PUSCH.And need repeatedly report CSI in the prior art time, just need repeatedly trigger, frequently reporting in the process of CSI at needs thus, the embodiment of the invention can be saved the expense of sending the PDCCH signaling that triggers.
Fig. 7 reports the flow chart of the method embodiment five of CSI for the present invention, and as shown in Figure 7, this method comprises:
The embodiment of the invention is corresponding with embodiment shown in Figure 6.The executive agent of present embodiment is UE.
UE receives the trigger command that eNB sends, and this trigger command is used to make UE to report the corresponding CSI of one or more carrier waves.
After UE receives the trigger command of eNB transmission, report at least twice eNB to require the corresponding CSI of at least one carrier wave that reports at PUSCH.
In the present embodiment, UE reports repeatedly CSI after receiving and once triggering.And UE reports the mode of CSI for many times, can be periodic report, also can be for reporting aperiodic.
Need to prove, the concrete setting of the trigger command in the present embodiment, UE carries out the mode of periodic report, can repeat no more at this referring to the specific descriptions among Fig. 1-embodiment illustrated in fig. 5.
In the embodiment of the invention, UE receives being used to that eNB sends and indicates UE to report the trigger command of the corresponding CSI of at least one carrier wave, and UE repeatedly reports this CSI in PUSCH then.And need repeatedly report CSI in the prior art time, just need repeatedly trigger, frequently reporting in the process of CSI at needs thus, the embodiment of the invention can be saved the expense of sending the PDCCH signaling that triggers.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be accomplished through the relevant hardware of program command; Aforesaid program can be stored in the computer read/write memory medium; This program the step that comprises said method embodiment when carrying out; Aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
Fig. 8 reports the sketch map of the device embodiment one of CSI for the present invention, and this device is contained in eNB, and this device comprises: first sending module 81 and first receiver module 83.
First sending module 81 is used for sending the trigger command that is used to make the corresponding CSI of at least one carrier wave of UE periodic report to UE.
The workflow of each module and operation principle repeat no more at this referring to the description among the method embodiment of above-mentioned Fig. 1-shown in Figure 5 in the present embodiment.
Concrete, this trigger command can be the permission of the uplink scheduling among PDCCH signaling.
This uplink scheduling permission signaling comprises first trigger fields that is used to trigger the corresponding CSI of at least one carrier wave of UE periodic report.This first trigger fields comprises: the CQI request field, be shown as the Modulation and Coding Scheme MCS of redundant state, and be less than or equal to the value of the Resource Block of first threshold.
Perhaps, this uplink scheduling permission signaling comprises second trigger fields that is used to trigger the corresponding CSI of at least one carrier wave of UE periodic report.Second trigger fields comprises: value is 10 or 11 CQI request field.
In the embodiment of the invention, first sending module sends trigger command to UE, after UE receives this trigger command, and the corresponding CSI of a plurality of carrier waves of periodic report in PUSCH.The embodiment of the invention expands to the CSI of a plurality of carrier waves among the PUSCH and reports, because the resource of PUSCH is abundant than PUCCH, so UE can realize reporting the CSI of a plurality of carrier waves correspondences in PUSCH, has improved the precision that reports that carrier wave converges CSI in the scene thus.
Fig. 9 reports the sketch map of the device embodiment two of CSI for the present invention, and this device is contained in UE, and this device comprises: second receiver module 91 and second sending module 93.
Second sending module 93 is used for according to trigger command at the corresponding CSI of at least one carrier wave of PUSCH periodic report.
The workflow of each module and operation principle repeat no more at this referring to the description among the method embodiment of above-mentioned Fig. 1-shown in Figure 5 in the present embodiment.
Concrete, second sending module 93 can comprise: first transmitting element and/or second transmitting element.
First transmitting element be used for when receive through the rrc layer signaling at least one each carrier wave of carrier wave report parameter after, respectively according to each carrier wave report parameter and trigger command, at the corresponding CSI of each carrier wave of PUSCH periodic report.
Second transmitting element be used for when receive a plurality of carrier waves of corresponding at least one carrier wave through the rrc layer signaling one group report parameter after, according to reporting parameter and trigger command, at the corresponding CSI of a plurality of carrier waves of PUSCH periodic report.
Wherein, report parameter to comprise report cycle and report skew, perhaps, report parameter to comprise report cycle, report skew and report number of times.
In the embodiment of the invention, after second receiver module receives the trigger command of eNB transmission, the corresponding CSI of a plurality of carrier waves of second sending module periodic report in PUSCH.The embodiment of the invention expands to the CSI of a plurality of carrier waves among the PUSCH and reports, because the resource of PUSCH is abundant than PUCCH, so UE can realize reporting the CSI of a plurality of carrier waves correspondences in PUSCH, has improved the precision that reports that carrier wave converges CSI in the scene thus.
Figure 10 reports the sketch map of the device embodiment three of CSI for the present invention, and this device is contained in eNB, and this device comprises: the 3rd sending module 1001 and the 3rd receiver module 1003.
The 3rd sending module 1001 is used for being used to make UE to report the trigger command of the corresponding CSI of at least one carrier wave to the UE transmission.
The 3rd receiver module 1003 is used to receive UE according to trigger command, the corresponding CSI of at least twice at least one carrier wave that reports at PUSCH.
The workflow of each module and operation principle repeat no more at this referring to the description among the method embodiment of above-mentioned Fig. 6-shown in Figure 7 in the present embodiment.
In the embodiment of the invention, the 3rd sending module sends to UE and is used to indicate UE to report the trigger command of the corresponding CSI of at least one carrier wave, and UE repeatedly reports this CSI after receiving the trigger command of eNB transmission in PUSCH.And need repeatedly report CSI in the prior art time, just need repeatedly trigger, frequently reporting in the process of CSI at needs thus, the embodiment of the invention can be saved the expense of sending the PDCCH signaling that triggers.
Figure 11 reports the sketch map of the device embodiment four of CSI for the present invention, and this device is contained in UE, and this device comprises: the 4th receiver module 1101 and the 4th sending module 1103.
The 4th receiver module 1101 is used to receive being used to that the base station sends makes UE report the trigger command of the corresponding CSI of at least one carrier wave.
The 4th sending module 1103 is used for reporting the corresponding CSI of at least twice at least one carrier wave according to trigger command at PUSCH.
The workflow of each module and operation principle repeat no more at this referring to the description among the method embodiment of above-mentioned Fig. 6-shown in Figure 7 in the present embodiment.
In the embodiment of the invention, the 4th receiver module receives being used to that eNB sends and indicates UE to report the trigger command of the corresponding CSI of at least one carrier wave, and the 4th sending module repeatedly reports this CSI in PUSCH then.And need repeatedly report CSI in the prior art time, just need repeatedly trigger, frequently reporting in the process of CSI at needs thus, the embodiment of the invention can be saved the expense of sending the PDCCH signaling that triggers.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (29)
1. the method for a reporting status information of channel CSI is characterized in that, comprising:
Send the trigger command that is used to make the corresponding CSI of at least one carrier wave of said UE periodic report to UE;
Cycle receives said UE according to said at least one carrier wave corresponding CSI of said trigger command at Physical Uplink Shared Channel PUSCH periodic report.
2. method according to claim 1 is characterized in that, said trigger command is the uplink scheduling permission signaling in the physical downlink control channel PDCCH.
3. method according to claim 1 is characterized in that, also comprises:
Send the parameter that reports that reports said CSI to said UE through radio resource control RRC layer signaling; Saidly report parameter to comprise report cycle and report skew, perhaps, saidly report parameter to comprise report cycle, report skew and report number of times.
4. method according to claim 3 is characterized in that, the said transmission to said UE through the rrc layer signaling reports the parameter that reports of said CSI to comprise:
Through the rrc layer signaling to said UE send each carrier wave in said at least one carrier wave of periodic report separately report parameter so that said UE according to each carrier wave separately report parameter, report the corresponding CSI of each carrier wave.
5. method according to claim 3 is characterized in that:
When having greatest common divisor between all carrier cycles at least one carrier wave, said report cycle is said greatest common divisor; When not having greatest common divisor between said all carrier cycles, said report cycle is maximum or the minimum value in all carrier cycles;
The said skew that reports that reports skew for arbitrary carrier wave;
The said number of times that reports is the maximum times in the number of times that reports of all carrier waves.
6. method according to claim 2 is characterized in that: said uplink scheduling permission signaling comprises first trigger fields that is used to trigger the corresponding CSI of said at least one carrier wave of said UE periodic report; Said first trigger fields comprises: the CQI request field, be shown as the Modulation and Coding Scheme MCS of redundant state, and be less than or equal to the value of the Resource Block of first threshold.
7. method according to claim 6 is characterized in that:
When said uplink scheduling permission signaling was sent in the CSS of the common search space of said PDCCH, said CQI request field was 0 or 1, and the value of said MCS is 29,30 or 31;
When sending among user's dedicated search space USS of said uplink scheduling permission signaling at said PDCCH, said CQI request field is 00 or 01, and the value of said MCS is 29,30 or 31.
8. method according to claim 2 is characterized in that, said uplink scheduling permission signaling comprises second trigger fields that is used to trigger the corresponding CSI of said at least one carrier wave of said UE periodic report; Said second trigger fields comprises: value is 10 or 11 CQI request field.
9. method according to claim 8 is characterized in that, also comprises:
Indicating said second trigger fields through the rrc layer signaling to said UE is to be used to trigger the corresponding CSI of said at least one carrier wave of said UE periodic report.
10. according to the arbitrary described method of claim 1-9, it is characterized in that said the transmission to UE is used to make UE to report the trigger command of the corresponding CSI of at least one carrier wave to comprise:
Send the trigger command of the corresponding CSI of the carrier wave be used to make UE periodic report predetermined quantity to UE;
And be that said UE divides the carrier wave that is used in the said predetermined quantity of periodic report the corresponding required resource of CSI.
11. the method for a reporting status information of channel CSI is characterized in that, comprising:
Receive the trigger command that is used to make the corresponding CSI of at least one carrier wave of UE periodic report that send the base station;
According to the CSI of said trigger command in said at least one carrier wave correspondence of Physical Uplink Shared Channel PUSCH periodic report.
12. method according to claim 11 is characterized in that, saidly comprises at the corresponding CSI of said at least one carrier wave of PUSCH periodic report according to said trigger command:
When receive through the rrc layer signaling each carrier wave at least one carrier wave report parameter after, respectively according to each carrier wave report parameter and said trigger command, at the corresponding CSI of said each carrier wave of PUSCH periodic report; Perhaps
When receive corresponding at least one carrier wave through the rrc layer signaling in one group of a plurality of carrier waves report parameter after, according to said parameter and the said trigger command of reporting, at the corresponding CSI of the said a plurality of carrier waves of PUSCH periodic report;
Saidly report parameter to comprise report cycle and report skew, perhaps saidly report parameter to comprise report cycle, report skew and report number of times.
13. method according to claim 11 is characterized in that:
If receive said trigger command constantly, then begin the corresponding CSI of said at least one carrier wave of periodic report constantly at t+k1+k2 at t; Wherein, k1 is the trigger command entry-into-force time, and k2 is for reporting skew.
14. according to the arbitrary described method of claim 11-13, it is characterized in that, also comprise:
When the said CSI of periodic report,, then stop current periodic report if receive new uplink scheduling permission signaling;
Said new uplink scheduling permission signaling comprises following any one or multinomial: the uplink scheduling permission that new said trigger command, aperiodic triggers and send data; Perhaps
When the said CSI of periodic report, if receive the new parameter that reports, then when reporting said CSI, according to the said new said CSI of reporting parameters that reports according to next time triggering through the rrc layer signaling; Saidly report parameter to comprise report cycle and report skew, perhaps saidly report parameter to comprise report cycle, report skew and report number of times.
15. according to the arbitrary described method of claim 11-13, it is characterized in that, also comprise:
During at the corresponding CSI of said at least one carrier wave of PUSCH periodic report, use the effective value of the last MCS that packet to be reported is carried out modulating-coding according to said trigger command said.
16., it is characterized in that said trigger command is the uplink scheduling permission signaling in the physical downlink control channel PDCCH according to the arbitrary described method of claim 11-13.
17. the method according to claim 16 is characterized in that, said uplink scheduling permission signaling comprises first trigger fields that is used to trigger the corresponding CSI of said at least one carrier wave of said UE periodic report; Said first trigger fields comprises: the CQI request field, be shown as the Modulation and Coding Scheme MCS of redundant state, and be less than or equal to the value of the Resource Block of first threshold.
18. the method according to claim 16 is characterized in that, said uplink scheduling permission signaling comprises second trigger fields that is used to trigger the corresponding CSI of said at least one carrier wave of said UE periodic report; Said second trigger fields comprises: value is 10 or 11 CQI request field.
19. the method according to claim 18 is characterized in that, also comprises:
Receiving said second trigger fields of sending through the rrc layer signaling said base station is the indication that is used to trigger the corresponding CSI of said at least one carrier wave of said UE periodic report.
20. the method for a reporting status information of channel CSI is characterized in that, comprising:
Be used to make said UE to report the trigger command of the corresponding CSI of at least one carrier wave to the UE transmission;
Receive said UE according to said trigger command, the corresponding CSI of at least twice said at least one carrier wave that reports at Physical Uplink Shared Channel PUSCH.
21. the method for a reporting status information of channel CSI is characterized in that, comprising:
Receiving being used to that the base station sends makes UE report the trigger command of the corresponding CSI of at least one carrier wave;
Report the corresponding CSI of at least twice said at least one carrier wave according to said trigger command at Physical Uplink Shared Channel PUSCH.
22. method according to claim 21 is characterized in that, the mode that reports said CSI is periodic report or reports aperiodic.
23. the device of a reporting status information of channel CSI, said device is contained in the base station, it is characterized in that, said device comprises:
First sending module is used for sending the trigger command that is used to make the corresponding CSI of at least one carrier wave of said UE periodic report to UE;
First receiver module, be used for the cycle receive said UE according to said trigger command at the corresponding CSI of said at least one carrier wave of Physical Uplink Shared Channel PUSCH periodic report.
24. device according to claim 23 is characterized in that, said trigger command is the uplink scheduling permission signaling in the physical downlink control channel PDCCH.
25. device according to claim 24 is characterized in that:
Said uplink scheduling permission signaling comprises first trigger fields that is used to trigger the corresponding CSI of said at least one carrier wave of said UE periodic report; Said first trigger fields comprises: the CQI request field, be shown as the Modulation and Coding Scheme MCS of redundant state, and be less than or equal to the value of the Resource Block of first threshold; Perhaps
Said uplink scheduling permission signaling comprises second trigger fields that is used to trigger the corresponding CSI of said at least one carrier wave of said UE periodic report; Said second trigger fields comprises: value is 10 or 11 CQI request field.
26. the device of a reporting status information of channel CSI, said device is contained in UE, it is characterized in that, said device comprises:
Second receiver module is used to receive the trigger command that is used to make the corresponding CSI of at least one carrier wave of UE periodic report that send the base station;
Second sending module is used for according to said trigger command at the corresponding CSI of said at least one carrier wave of Physical Uplink Shared Channel PUSCH periodic report.
27. device according to claim 26 is characterized in that, said second sending module comprises:
First transmitting element, be used for when receive through the rrc layer signaling at least one each carrier wave of carrier wave report parameter after, respectively according to each carrier wave report parameter and said trigger command, at the corresponding CSI of said each carrier wave of PUSCH periodic report; And/or
Second transmitting element, be used for when receive a plurality of carrier waves of corresponding at least one carrier wave through the rrc layer signaling one group report parameter after, according to said parameter and the said trigger command of reporting, at the corresponding CSI of the said a plurality of carrier waves of PUSCH periodic report;
Saidly report parameter to comprise report cycle and report skew, perhaps saidly report parameter to comprise report cycle, report skew and report number of times.
28. the device of a reporting status information of channel CSI, said device is contained in the base station, it is characterized in that, said device comprises:
The 3rd sending module is used for being used to make said UE to report the trigger command of the corresponding CSI of at least one carrier wave to the UE transmission;
The 3rd receiver module is used to receive said UE according to said trigger command, the corresponding CSI of at least twice said at least one carrier wave that reports at Physical Uplink Shared Channel PUSCH.
29. the device of a reporting status information of channel CSI, said device is contained in UE, it is characterized in that, said device comprises:
The 4th receiver module is used to receive being used to that the base station sends make UE report the trigger command of the corresponding CSI of at least one carrier wave;
The 4th sending module is used for reporting the corresponding CSI of at least twice said at least one carrier wave according to said trigger command at Physical Uplink Shared Channel PUSCH.
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| CN201110003821.7A CN102595476B (en) | 2011-01-10 | The method and apparatus of reporting status information of channel |
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|---|---|---|---|
| CN201110003821.7A CN102595476B (en) | 2011-01-10 | The method and apparatus of reporting status information of channel |
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| CN102595476A true CN102595476A (en) | 2012-07-18 |
| CN102595476B CN102595476B (en) | 2016-12-14 |
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