CN102638337A

CN102638337A - CSI (Channel State Information) reporting control method as well as CSI reporting method and device

Info

Publication number: CN102638337A
Application number: CN2012101192264A
Authority: CN
Inventors: 苏昕; 张然然; 荆梅芳; 拉盖施
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2012-04-20
Filing date: 2012-04-20
Publication date: 2012-08-15
Anticipated expiration: 2032-04-20
Also published as: CN102638337B; WO2013155977A1

Abstract

The invention discloses a CSI (Channel State Information) reporting control method as well as a CSI reporting method and a device. The CSI reporting control method comprises the following steps of: selecting a frequency domain granularity obtained when sub-band CSI is reported for sub-band CSI required to be reported of a terminal from a frequency domain set obtained when the sub-band CSI corresponding to the combination of the current system bandwidth and a CSI reporting mode configured for the terminal is reported; sending configuration information of the frequency domain granularity obtained when the sub-band CSI is reported to the terminal, wherein the configuration information contains the frequency domain granularity selected for the sub-band CSI required to be reported of the terminal and obtained when the sub-band CSI is reported. A group of CSI reporting mode and system bandwidth can correspond to the frequency domain granularity obtained when a plurality of sub-band CSI is reported, equipment at a network side can select the frequency domain granularity obtained when one sub-band CSI is reported from all the frequency domain granularities and send the selected frequency domain granularity obtained when the sub-band CSI is reported to the terminal, and thus the flexibility in the configuration of the frequency domain granularity obtained when the sub-band CSI is reported is improved.

Description

A kind of CSI method for controlling reporting, CSI report method and device

Technical field

The present invention relates to communication technical field, relate in particular to a kind of CSI method for controlling reporting and device, CSI report method and device.

Background technology

Support CSI (Channel State Information, the channel condition information) feedback scheme of two kinds of forms in LTE (Long Term Evolution, the Long Term Evolution) system: periodic CSI reports with acyclic CSI and reports.Periodic CSI reports and normally carries out through PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel).If UE (terminal) periodically reports on the subframe of CSI, the data that have been scheduled simultaneously need to send, and so, periodic CSI reports carrying out through PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel).Acyclic CSI reports through PUSCH and carries out.Wherein, CSI can be a kind of or combination in any among RI (Rank Indicator, order indication), PMI (Pre-Coding Matrix Indicator, pre-coding matrix indication), the CQI (Channel Quality Indicator, channel quality indication).

For example, existing normalized definition based on the acyclic CSI of PUSCH report in the process, comprise that 5 kinds of CSI report pattern.Wherein report the CSI of PMI to report for the pattern, can adopt three kinds of CSI as shown in table 1 to report pattern for needs:

Table 1

In the table 1, report pattern 1-2, need report CQI and PMI based on the CSI of PUSCH.Concrete, need UE to report a broadband CQI; Based on one-level code book (W1), need UE to report PMI W1 (broadband P MI WI) to the whole system bandwidth; Based on secondary code book (W2), need UE to report subband PMI W2.

CSI based on PUSCH reports pattern 2-2, need report CQI and PMI.Concrete, need UE to report a broadband CQI, and report subband CQI to M the subband of selecting; Based on the one-level code book, need UE to report broadband P MI WI; Based on the secondary code book, need UE to report broadband P MI W2, and report subband PMI W2 to M the subband of selecting.

CSI based on PUSCH reports mode 3-1, need report CQI and PMI.Concrete, need UE to report subband CQI; Based on the one-level code book, need UE to report broadband P MI W1; Based on the secondary code book, need UE to report broadband P MI W2.

In order further to improve feedback accuracy, may introduce mode 3-2 (as shown in table 2) in the LTE later release based on PUSCH:

Table 2

Report in the pattern at above-mentioned CSI, the frequency domain granularity of giving the correct time on the subband CSI (subband CSI is meant, subband CQI and/or subband PMI) depends on that system bandwidth and CSI report pattern.

The frequency domain granularity of giving the correct time on the subband CSI is meant, the bandwidth of the subband that the CSI feedback is directed against.The subband CSI that reports had if desired both comprised that subband CQI also comprised subband PMI, and the frequency domain granularity of giving the correct time on the frequency domain granularity of then giving the correct time on the subband CQI and the subband PMI is identical.

So, report pattern 1-2 and 3-1 for above-mentioned CSI based on PUSCH, the frequency domain granularity of giving the correct time on the subband CSI is defined by table 3.

Table 3

System bandwidth	The frequency domain granularity of giving the correct time on the subband CSI
		?6-7	?NA
?8-10	?4
		?11-26	?4
?27-63	?6
		?64-110	?8

Wherein, the frequency domain granularity k that gives the correct time on system bandwidth and the subband CSI describes with RB.For example; System bandwidth is when being 64-110 RB, and the frequency domain granularity k that gives the correct time on the subband CSI is 8 RB.

is 6-7 RB for system bandwidth, and the frequency domain granularity k value of giving the correct time on the subband CSI is NA (whole RB that the expression system bandwidth comprises).

Report pattern 2-2 for above-mentioned CSI based on PUSCH, the frequency domain granularity of giving the correct time on the subband CSI is defined by table 4.

Table 4

System bandwidth	The frequency domain granularity of giving the correct time on the subband CSI
		?6-7	?NA
?8-10	?2
		?11-26	?2
?27-63	?3
		?64-110	?4

In the CSI feedback scheme of prior LTE system, after CSI reported pattern and system bandwidth to confirm, the frequency domain granularity of giving the correct time on the subband CSI is unique to be confirmed, dumb to the configuration of the frequency domain granularity of giving the correct time on the subband CSI.

Summary of the invention

The purpose of this invention is to provide a kind of CSI method for controlling reporting, CSI report method and device, dispose inflexible problem to solve the frequency domain granularity of giving the correct time on the existing subband CSI.

The objective of the invention is to realize through following technical scheme:

A kind of channel condition information CSI method for controlling reporting comprises:

Report the frequency domain granularity set that the corresponding subband CSI of combination of pattern gives the correct time from current system bandwidth with for the CSI of terminal configuration; The frequency domain granularity of giving the correct time on the subband CSI Information Selection subband CSI that need report for said terminal comprises the frequency domain granularity of giving the correct time at least one subband CSI in the frequency domain granularity of giving the correct time on the said subband CSI set;

Send the frequency domain granularity configuration information that gives the correct time on the subband CSI to said terminal, carry the frequency domain granularity of giving the correct time on the subband CSI of the subband CSI Information Selection that need report in the frequency domain granularity configuration information that gives the correct time on the said subband CSI for said terminal.

A kind of channel condition information CSI report method comprises:

Receive the frequency domain granularity configuration information that gives the correct time on the subband CSI of network equipment transmission; Carry said network equipment in the frequency domain granularity configuration information that gives the correct time on the said subband CSI and be the frequency domain granularity of giving the correct time on the subband CSI of the subband CSI Information Selection that the terminal need report; The frequency domain granularity of giving the correct time on the said subband CSI is to select the frequency domain granularity set that reports the corresponding subband CSI of combination of pattern to give the correct time from current system bandwidth with for the CSI of terminal configuration by said network equipment, and the frequency domain granularity set of giving the correct time on the said subband CSI comprises the frequency domain granularity of giving the correct time at least one subband CSI;

According to the frequency domain granularity of giving the correct time on the said subband CSI, calculate subband CSI information;

For the CSI of terminal configuration reports pattern, report said subband CSI information constantly according to said in predetermined reporting.

A kind of channel condition information CSI reports control device, comprising:

Frequency domain granularity configuration module; Be used for the frequency domain granularity set that reports the corresponding subband CSI of combination of pattern to give the correct time from current system bandwidth with for the CSI of terminal configuration; The frequency domain granularity of giving the correct time on the subband CSI Information Selection subband CSI that need report for said terminal comprises the frequency domain granularity of giving the correct time at least one subband CSI in the frequency domain granularity of giving the correct time on the said subband CSI set;

The configuration information sending module; Be used for sending the frequency domain granularity configuration information that gives the correct time on the subband CSI, carry the frequency domain granularity of giving the correct time on the subband CSI of the subband CSI Information Selection that need report in the frequency domain granularity configuration information that gives the correct time on the said subband CSI for said terminal to said terminal.

A kind of channel condition information CSI reporting device comprises:

The configuration information receiver module; Be used to receive the frequency domain granularity configuration information that gives the correct time on the subband CSI of network equipment transmission; Carry said network equipment in the frequency domain granularity configuration information that gives the correct time on the said subband CSI and be the frequency domain granularity of giving the correct time on the subband CSI of the subband CSI Information Selection that the terminal need report; The frequency domain granularity of giving the correct time on the said subband CSI is to select the frequency domain granularity set that reports the corresponding subband CSI of combination of pattern to give the correct time from current system bandwidth with for the CSI of terminal configuration by said network equipment, and the frequency domain granularity set of giving the correct time on the said subband CSI comprises the frequency domain granularity of giving the correct time at least one subband CSI;

CSI information calculations module is used for the frequency domain granularity of giving the correct time according on the said subband CSI, calculates subband CSI information;

The CSI reporting module is used for according to said for the CSI of terminal configuration reports pattern, reports said subband CSI information constantly in predetermined reporting.

The technical scheme that provides according to the invention described above embodiment; Because the frequency domain granularity that one group of CSI reports pattern and system bandwidth to give the correct time on can corresponding a plurality of subband CSI; According to above-mentioned processing procedure; Network equipment can therefrom be selected the frequency domain granularity of giving the correct time on the subband CSI, and the frequency domain granularity of giving the correct time on the subband CSI that selects is sent to the terminal, has improved the frequency domain granularity configuration flexibility of giving the correct time on the subband CSI.

Description of drawings

The CSI method for controlling reporting flow chart that Fig. 1 provides for the embodiment of the invention;

The CSI report method flow chart that Fig. 2 provides for the embodiment of the invention;

The CSI that Fig. 3 provides for the embodiment of the invention reports the control device structural representation;

The CSI reporting device structural representation that Fig. 4 provides for the embodiment of the invention.

Embodiment

The embodiment of the invention provides a kind of CSI method for controlling reporting, and its implementation is as shown in Figure 1, specifically comprises following operation:

Step 100, from current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity set that the corresponding subband CSI of combination of pattern gives the correct time, the frequency domain granularity of giving the correct time on the subband CSI Information Selection subband CSI that need report for this terminal;

Comprise the frequency domain granularity of giving the correct time at least one subband CSI in the frequency domain granularity set of wherein, giving the correct time on the subband CSI.That is to say the frequency domain granularity that one group of CSI reports pattern and system bandwidth to give the correct time on can corresponding a plurality of subband CSI.

Step 110, the frequency domain granularity configuration information that on above-mentioned terminal transmission subband CSI, gives the correct time carry the frequency domain granularity of giving the correct time on the subband CSI of the subband CSI Information Selection that need report for this terminal in the step 100 in the frequency domain granularity configuration information that gives the correct time on this subband CSI.

Wherein, the frequency domain granularity configuration information that gives the correct time on the above-mentioned subband CSI can send through physical layer signaling or high-level signaling, also can send through other message of sending to the terminal, can also send as separate message.

Because the frequency domain granularity that one group of CSI reports pattern and system bandwidth to give the correct time on can corresponding a plurality of subband CSI; According to above-mentioned processing procedure; Network equipment (for example eNB) can therefrom be selected the frequency domain granularity of giving the correct time on the subband CSI; And the frequency domain granularity of giving the correct time on the subband CSI that selects sent to the terminal, improved the frequency domain granularity configuration flexibility of giving the correct time on the subband CSI.

Communication system performance depends on the selection of dispatching algorithm to a great extent.If abundanter CSI can be fed back in the terminal, then help network side more and also transmit with appropriate transmission means at the appropriate terminal of appropriate scheduling of resource.The frequency domain granularity of giving the correct time on the subband CSI is big more, and the CSI of terminal feedback is abundant more.The selection of the frequency domain granularity of giving the correct time on the subband CSI on the other hand, can bring influence to feedback overhead, feedback resources and power loss again.ENB need be a subband CSI configuration frequency domain granularity according to the needs of the change of applied environment and transfer of data, scheduling.Wherein, the needs of the change of applied environment and transfer of data, scheduling are through the actual conditions reflection of channel.Specific to implementation of the present invention; For the subband CSI information that makes terminal to report can be complementary with the actual conditions of channel; So that subband CSI information reflects the actual conditions of channel better; Thereby the raising systematic function, preferred, the concrete implementation of above-mentioned steps 110 can be: according to the actual conditions of channel; From current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity set that the corresponding subband CSI of combination of pattern gives the correct time, select the frequency domain granularity of giving the correct time on the subband CSI.

Wherein, The actual conditions of channel comprise following any one or multiple combination: the frequency selectivity of channel; Be used to report the capacity of the feedback channel of subband CSI information; The path loss of channel uplink power, channel parameter that other maybe be relevant with the frequency domain granularity of giving the correct time on the subband CSI or the like.

The frequency selectivity of channel often depends on the multipath distribution situation in the communication environments, therefore can change along with moving of terminal.When frequency selectivity is higher; The frequency domain correlation of channel is lower, if adopt less frequency domain granularity, subband CSI information can not reflect the fluctuation situation of channel well; The frequency domain granularity of giving the correct time at this moment, need the be bigger subband CSI for the subband CSI Information Selection that the terminal need report.When the frequency selectivity of channel hangs down; The frequency domain correlation of channel is higher; If adopt bigger frequency domain granularity, there is bigger redundancy between each subband CSI information, thereby causes the waste of feedback overhead; At this moment, need be the frequency domain granularity of giving the correct time on the less subband CSI of the subband CSI Information Selection that the terminal need report.

Be used to report the capacity of the feedback channel of subband CSI information also can have influence on the selection of the frequency domain granularity of giving the correct time on the subband CSI to a certain extent.If activated terminals quantity is more in the sub-district, the capacity of feedback channel is inadequate, and eNB hopes to obtain the subband CSI information of terminal to report, then can be the frequency domain granularity of giving the correct time on the less subband CSI of the CSI Information Selection that the terminal need report.Otherwise if activated terminals negligible amounts in the sub-district, the capacity of feedback channel is comparatively sufficient, and the frequency domain granularity of giving the correct time on then can be for the CSI Information Selection that the terminal need the report bigger subband CSI is to provide abundanter CSI information.

When terminal during apart from the eNB close together, the path loss of the ascending power at terminal (being the path loss of channel uplink power) is less, can select the frequency domain granularity of giving the correct time on the bigger subband CSI.Otherwise, can select the frequency domain granularity of giving the correct time on the less subband CSI, to reduce the power that feedback is consumed.

Wherein, the bandwidth of the subband that the CSI feedback is directed against is big more, and the frequency domain granularity of giving the correct time on the corresponding subband CSI is more little; Otherwise the bandwidth of the subband that the CSI feedback is directed against is big more, and the frequency domain granularity of giving the correct time on the corresponding subband CSI is more little.

In the actual application, the actual conditions of channel are by above-mentioned a plurality of channel parameters decision, during the frequency domain granularity of on selecting subband CSI, giving the correct time, just need take all factors into consideration each maybe with the relevant channel parameter of frequency domain granularity that gives the correct time on the subband CSI.Concrete choice criteria can be configured by the application scenarios according to reality in application process, is that those skilled in the art just can realize under the prerequisite of not paying creative work.

To CSI method for controlling reporting provided by the invention be elaborated with concrete application implementation example below.

Application implementation example one

Report in the process at acyclic CSI, if the terminal need report subband CQI and subband PMI, then eNB reports the processing procedure of controlling specifically to comprise following operation to CSI:

Step 200, eNB report first corresponding relation of the frequency domain granularity set of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; Select current system bandwidth and report the frequency domain granularity of giving the correct time on the corresponding subband CSI of the combination of pattern, the frequency domain granularity of giving the correct time on the subband CQI as the subband CQI selection that need report for the CSI of terminal configuration for this terminal.

Wherein, the first above-mentioned corresponding relation is meant that the CSI that has defined in the existing LTE communication standard reports the corresponding relation of the frequency domain granularity of giving the correct time on pattern, system bandwidth and the subband CSI.For example, be that CSI based on PUSCH reports pattern 1-2 or 3-1 if CSI reports pattern, the first then above-mentioned corresponding relation can be as shown in table 3.If it is that CSI based on PUSCH reports pattern 2-2 that CSI reports pattern, the first then above-mentioned corresponding relation can be as shown in table 4.

Step 210, eNB report second corresponding relation of the frequency domain granularity set of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; From current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity that the corresponding a plurality of subband CSI of combination of pattern give the correct time, the subband PMI that need report for this terminal selects the frequency domain granularity of giving the correct time on the subband PMI.

Wherein, in the second above-mentioned corresponding relation, comprise the frequency domain granularity of giving the correct time on a plurality of subband CSI in the frequency domain granularity set of giving the correct time on the subband CSI.

Preferably; ENB is according to the actual conditions of channel; And report second corresponding relation of the frequency domain granularity set of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; From current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity that the corresponding a plurality of subband CSI of combination of pattern give the correct time, the subband PMI that need report for this terminal selects the frequency domain granularity of giving the correct time on the subband PMI.Description for the actual conditions of channel has description in the invention described above embodiment, repeat no more here.

Should be pointed out that the present invention does not limit the sequencing on above-mentioned steps 200 and step 210 sequential.

Step 220, eNB are sent the frequency domain granularity configuration information that gives the correct time on the subband CSI to above-mentioned terminal, carry the frequency domain granularity of giving the correct time on the subband CQI that the subband CQI that need report for this terminal selects in the frequency domain granularity configuration information that gives the correct time on this subband CSI and the subband PMI of the subband PMI selection that need report for this terminal on the frequency domain granularity of giving the correct time.

The method that provides according to the invention described above application implementation example one; In the time of need reporting subband CQI and subband PMI at the same time; Be respectively the frequency domain granularity of giving the correct time in subband CQI and the subband PMI configuration; Make to the configuration of the frequency domain granularity of giving the correct time on the subband CSI more flexibly, can reflect the actual conditions of channel better.

Application implementation example two

Step 300, eNB report second corresponding relation of the frequency domain granularity set of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; From current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity that the corresponding a plurality of subband CSI of combination of pattern give the correct time, the subband CQI that need report for this terminal selects the frequency domain granularity of giving the correct time on the subband CQI.

Preferably; ENB is according to the actual conditions of channel; And report second corresponding relation of the frequency domain granularity set of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; From current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity that the corresponding a plurality of subband CSI of combination of pattern give the correct time, the subband CQI that need report for this terminal selects the frequency domain granularity of giving the correct time on the subband CQI.Description for the actual conditions of channel has description in the invention described above embodiment, repeat no more here.

Step 310, eNB report first corresponding relation of the frequency domain granularity set of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; Select current system bandwidth and report the frequency domain granularity of giving the correct time on the corresponding subband CSI of the combination of pattern, the frequency domain granularity of giving the correct time on the subband PMI as the subband PMI selection that need report for the CSI of terminal configuration for this terminal.

Should be pointed out that the present invention does not limit the sequencing on above-mentioned steps 300 and step 310 sequential.

Step 320, eNB are sent the frequency domain granularity configuration information that gives the correct time on the subband CSI to above-mentioned terminal, carry the frequency domain granularity of giving the correct time on the subband CQI that the subband CQI that need report for this terminal selects in the frequency domain granularity configuration information that gives the correct time on this subband CSI and the subband PMI of the subband PMI selection that need report for this terminal on the frequency domain granularity of giving the correct time.

Explanation to first corresponding relation and second corresponding relation in the application implementation example two can be repeated no more with reference to application implementation example one here.

The method that provides according to the invention described above application implementation example two; In the time of need reporting subband CQI and subband PMI at the same time; Be respectively the frequency domain granularity of giving the correct time in subband CQI and the subband PMI configuration; Make to the configuration of the frequency domain granularity of giving the correct time on the subband CSI more flexibly, can reflect the actual conditions of channel better.

Application implementation example three

Step 400, eNB report second corresponding relation of the frequency domain granularity of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; From current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity that the corresponding a plurality of subband CSI of combination of pattern give the correct time, the subband CQI that need report for this terminal selects the frequency domain granularity of giving the correct time on the subband CQI.

Preferably; ENB is according to the actual conditions of channel; And report second corresponding relation of the frequency domain granularity of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; From current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity that the corresponding a plurality of subband CSI of combination of pattern give the correct time, the subband CQI that need report for this terminal selects the frequency domain granularity of giving the correct time on the subband CQI.Description for the actual conditions of channel has description in the invention described above embodiment, repeat no more here.

Step 410, eNB report second corresponding relation of the frequency domain granularity of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; From current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity that the corresponding a plurality of subband CSI of combination of pattern give the correct time, the subband PMI that need report for this terminal selects the frequency domain granularity of giving the correct time on the subband PMI.

Preferably; ENB is according to the actual conditions of channel; And report second corresponding relation of the frequency domain granularity of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; From current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity that the corresponding a plurality of subband CSI of combination of pattern give the correct time, the subband PMI that need report for this terminal selects the frequency domain granularity of giving the correct time on the subband PMI.Description for the actual conditions of channel has description in the invention described above embodiment, repeat no more here.

Should be pointed out that the present invention does not limit the sequencing on above-mentioned steps 400 and step 410 sequential.

Step 420, eNB are sent the frequency domain granularity configuration information that gives the correct time on the subband CSI to above-mentioned terminal, carry the frequency domain granularity of giving the correct time on the subband CQI that the subband CQI that need report for this terminal selects in the frequency domain granularity configuration information that gives the correct time on this subband CSI and the subband PMI of the subband PMI selection that need report for this terminal on the frequency domain granularity of giving the correct time.

Explanation to second corresponding relation in the application implementation example three can be repeated no more with reference to application implementation example one here.

The method that provides according to the invention described above application implementation example three; In the time of need reporting subband CQI and subband PMI at the same time; Be respectively the frequency domain granularity of giving the correct time in subband CQI and the subband PMI configuration; Make to the configuration of the frequency domain granularity of giving the correct time on the subband CSI more flexibly, can reflect the actual conditions of channel better.

Application implementation example four

Step 500, eNB report first corresponding relation of the frequency domain granularity of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; Select current system bandwidth and, indicate the frequency domain granularity of giving the correct time on the subband CQI of CQI selection as the sub-band channel quality that need report for this terminal for the CSI of terminal configuration reports the frequency domain granularity of giving the correct time on the corresponding subband CSI of the combination of pattern.

Step 510, eNB report first corresponding relation of the frequency domain granularity of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; Select current system bandwidth and, indicate the frequency domain granularity of giving the correct time on the subband PMI of PMI selection as the sub-band channel quality that need report for this terminal for the CSI of terminal configuration reports the frequency domain granularity of giving the correct time on the corresponding subband CSI of the combination of pattern.

Should be pointed out that the present invention does not limit the sequencing on above-mentioned steps 500 and step 510 sequential.

Step 520, eNB are sent the frequency domain granularity configuration information that gives the correct time on the subband CSI to above-mentioned terminal, carry the frequency domain granularity of giving the correct time on the subband CQI that the subband CQI that need report for this terminal selects in the frequency domain granularity configuration information that gives the correct time on this subband CSI and the subband PMI of the subband PMI selection that need report for this terminal on the frequency domain granularity of giving the correct time.

Explanation to first corresponding relation in the application implementation example four can be repeated no more with reference to application implementation example one here.

The method that provides according to the invention described above application implementation example four; In the time of need reporting subband CQI and subband PMI at the same time; Be respectively the frequency domain granularity of giving the correct time in subband CQI and the subband PMI configuration; Make to the configuration of the frequency domain granularity of giving the correct time on the subband CSI more flexibly, can reflect the actual conditions of channel better.

Application implementation example five

If the terminal only need report subband CQI, then eNB reports the processing procedure of controlling specifically to comprise following operation to CSI:

Step 600, eNB report first corresponding relation of the frequency domain granularity of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; Select current system bandwidth and, indicate the frequency domain granularity of giving the correct time on the subband CQI of CQI selection as the sub-band channel quality that need report for this terminal for the CSI of terminal configuration reports the frequency domain granularity of giving the correct time on the corresponding subband CSI of the combination of pattern.

Step 610, eNB send the frequency domain granularity configuration information that gives the correct time on the subband CSI to above-mentioned terminal, carry the frequency domain granularity of giving the correct time on the subband CQI of the subband CQI selection that need report for this terminal in the frequency domain granularity configuration information that gives the correct time on this subband CSI.

Explanation to first corresponding relation in the application implementation example five can be repeated no more with reference to application implementation example one here.

Application implementation example six

Step 700, eNB report second corresponding relation of the frequency domain granularity of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; From current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity that the corresponding a plurality of subband CSI of combination of pattern give the correct time, the subband CQI that need report for this terminal selects the frequency domain granularity of giving the correct time on the subband CQI.

Step 710, eNB send the frequency domain granularity configuration information that gives the correct time on the subband CSI to above-mentioned terminal, carry the frequency domain granularity of giving the correct time on the subband CQI of the subband CQI selection that need report for this terminal in the frequency domain granularity configuration information that gives the correct time on this subband CSI.

Explanation to second corresponding relation in the application implementation example six can be repeated no more with reference to application implementation example one here.

Above-mentioned each application implementation example is that to report process with acyclic CSI be example, and CSI method for controlling reporting provided by the invention is described in detail.Should be pointed out that CSI method for controlling reporting provided by the invention can also be applied to periodic CSI and report process.Can think, report the application scenarios of subband CSI information, all can adopt CSI method for controlling reporting provided by the invention for needs.

To second corresponding relation of describing among each embodiment of the invention described above.In actual application, can confirm that in advance one group of CSI reports the frequency domain granularity set of giving the correct time on the subband CSI of pattern and system bandwidth correspondence according to the channel actual conditions; Also can confirm that in advance one group of CSI reports the frequency domain granularity set of giving the correct time on the subband CSI of pattern and system bandwidth correspondence according to the channel situation that possibly occur.Certainly, do not get rid of yet, confirm that in advance one group of CSI reports the frequency domain granularity set of giving the correct time on the subband CSI of pattern and system bandwidth correspondence according to other selection rules.

Table 5 provides a kind of second special corresponding relation.

Table 5

Wherein, When the call number of

expression system bandwidth is i, the set that the frequency domain granularity of giving the correct time on ni the optional subband CSI of system bandwidth correspondence constitutes.The value of

is represented j (j=1 in

; ..., the RB quantity that the frequency domain granularity of ni) giving the correct time on the individual CSI is corresponding.When the call number of system bandwidth is i, if the frequency domain granularity of giving the correct time on the CSI then comprises

individual subband for

in the whole system bandwidth.If

then wherein the bandwidth of the individual subband bandwidth that also has a subband for

possibly value be 1 for the minimum of

, the maximum possible value is

Wherein comprised at least one subclass again for

; When each subclass represented that the system bandwidth call number is i, a kind of CSI reported the frequency domain granularity set of giving the correct time on the corresponding subband CSI of pattern.

The embodiment of the invention provides a kind of CSI report method, and its implementation is as shown in Figure 2, specifically comprises following operation:

The frequency domain granularity configuration information that gives the correct time on the subband CSI that step 800, reception network equipment send; Carry this network equipment in the frequency domain granularity configuration information that gives the correct time on this subband CSI and be the frequency domain granularity of giving the correct time on the subband CSI of the subband CSI Information Selection that the terminal need report, the frequency domain granularity of giving the correct time on this subband CSI is to select the frequency domain granularity set that reports the corresponding subband CSI of combination of pattern to give the correct time from current system bandwidth with for the CSI of terminal configuration by this network equipment.

The frequency domain granularity set of wherein, giving the correct time on the subband CSI comprises the frequency domain granularity of giving the correct time at least one subband CSI.That is to say the frequency domain granularity that one group of CSI reports pattern and system bandwidth to give the correct time on can corresponding a plurality of subband CSI.

Step 810, according to the frequency domain granularity of giving the correct time on the above-mentioned subband CSI, calculate subband CSI information.

Step 820, according to above-mentioned for the CSI of terminal configuration reports pattern, report above-mentioned subband CSI information constantly in predetermined reporting.

Because the frequency domain granularity that one group of CSI reports pattern and system bandwidth to give the correct time on can corresponding a plurality of subband CSI; According to above-mentioned processing procedure; The frequency domain granularity of giving the correct time on the subband CSI that the terminal can be selected according to network equipment is calculated subband CSI information and is reported, and has improved the frequency domain granularity configuration flexibility of giving the correct time on the subband CSI.

In the process of terminal to report CSI,, also report broadband CSI information except reporting subband CSI information.Accordingly, also calculate broadband CSI information.Concrete, the terminal reports the pairing mode of pattern according to network equipment for the CSI of its configuration, measures the CSI information of also calculating.Illustrate the account form of various CSI information below.

Calculating for broadband P MI: report the RI that calculates in the pattern based on current C SI, terminal hypothesis total system bandwidth has been used identical precoding, and from code book, selects a pre-coding matrix, calculates broadband P MI according to the pre-coding matrix of selecting.

Calculating for subband PMI; According to the frequency domain granularity of giving the correct time on the subband PMI, calculate subband PMI, concrete: report the RI that calculates in the pattern based on current C SI; For each subband; The terminal hypothesis has been used identical precoding to this subband, and from code book, selects a pre-coding matrix, calculates subband PMI according to the pre-coding matrix of selecting.Wherein, the bandwidth of subband is confirmed by the frequency domain granularity of giving the correct time on the subband PMI.

Calculating for broadband CQI:

If report broadband CQI and subband PMI simultaneously; Then report the RI that calculates in the pattern based on current C SI; Used the PMI to this subband of terminal to report on each subband of hypothesis of terminal respectively; And calculate the broadband CQI of each code word in this case, wherein, the bandwidth of subband is confirmed by the frequency domain granularity of giving the correct time on the subband PMI;

If report broadband CQI and broadband P MI simultaneously, then report the RI that calculates in the pattern based on current C SI, terminal hypothesis total system bandwidth all unifies to have used the broadband P MI of terminal to report, and calculates the broadband CQI of each code word in this case.

Calculating for subband CQI:

If report subband CQI and subband PMI simultaneously, then report the RI that calculates in the pattern based on current C SI, the terminal is that each code word is calculated subband CQI on each subband.

Wherein, The arbitrary subband that is directed against for subband CQI; If its whole RB that comprise are the RB that a certain subband PMI is comprised, then during the subband CQI of terminal each code word on calculating this subband, suppose to have used above-mentioned a certain subband PMI on this subband CQI is directed against in the downlink transfer the subband.

Be directed against arbitrary subband for subband CQI; If all there is common factor in its RB that comprises set with the RB set that a plurality of PMI report subband to comprise; Then the concrete implementation of above-mentioned steps 810 can be: used the subband PMI corresponding with the RB subclass respectively on a plurality of RB subclass of the subband that subband CQI is corresponding described in the hypothesis downlink transfer of terminal; According to the frequency domain granularity of giving the correct time on the said subband CQI; With said subband PMI, calculate subband CQI, the RB in the said RB subclass exists with a corresponding RB that subband comprised of subband PMI and occurs simultaneously.Concrete, when the subband CQI of each code word on this subband is calculated at the terminal, suppose to have used the subband PMI that has the correspondence of common factor with it respectively on a plurality of RB subclass of the subband that this subband CQI is directed against in the downlink transfer.For example:

Suppose that CQI subband (being that subband CQI reports the subband that is directed against) k has comprised N RB, will exist P size of common factor to be designated as respectively according to frequency mode from low to high can be designated as

respectively with it for the pairing RB set of the PMI subband of Q (being that subband PMI reports the subband that is directed against)

{RB _low，...，RB _low+Q-1}，{RB _low+Q，...，RB _low+2Q-1}，...，{RB _low+(P-1)Q，...，RB _low+PQ-1}

Wherein, label low≤k ₁, low+PQ-1>=k _N, the subband PMI of above-mentioned P PMI subband can be designated as PMI respectively ₁, PMI ₂..., PMI _PThen can CQI subband k be divided into the P sub-set:

S_{1}^{CQI} = {{RB}_{1}, . . . {RB}_{Low + Q - 1}},

S_{2}^{CQI} = {{RB}_{Low + Q}, . . . {RB}_{Low + 2 Q - 1}}, . . .,

S_{P}^{CQI} = {{RB}_{Low + (P - 1) Q}, . . . {RB}_{K_{N}}}

CQI on the CQI subband k calculates and should suppose

On used PMI respectively ₁, PMI ₂..., PMI _PThat is to say, use PMI ₁Calculate

Subband CQI, use PMI ₂Calculate

Subband CQI, by that analogy, use PMI _pCalculate Subband CQI, then, will

Subband CQI carry out match, obtain the subband CQI of CQI subband k.

If report subband CQI and broadband P MI simultaneously, then report the RI that calculates in the pattern based on current C SI, hypothesis each subband in terminal all unify to have used the broadband P MI of terminal to report, and the calculating subband CQI of each code word on each subband in this case.

The embodiment of the invention also provides a kind of CSI to report control device, and its implementation structure is as shown in Figure 3, and concrete implementation structure is following:

Frequency domain granularity configuration module 3001; Be used for the frequency domain granularity set that reports the corresponding subband CSI of combination of pattern to give the correct time from current system bandwidth with for the CSI of terminal configuration, the frequency domain granularity of giving the correct time on the subband CSI Information Selection subband CSI that need report for this terminal.

Configuration information sending module 3002; Be used for sending the frequency domain granularity configuration information that gives the correct time on the subband CSI, carry the frequency domain granularity of giving the correct time on the subband CSI of the subband CSI Information Selection that frequency domain granularity configuration module 3001 need report for this terminal in the frequency domain granularity configuration information that gives the correct time on this subband CSI to above-mentioned terminal.

It can be eNB that the CSI that the embodiment of the invention provides reports control device.

Because the frequency domain granularity that one group of CSI reports pattern and system bandwidth to give the correct time on can corresponding a plurality of subband CSI; Network equipment (for example eNB) can therefrom be selected the frequency domain granularity of giving the correct time on the subband CSI; And the frequency domain granularity of giving the correct time on the subband CSI that selects sent to the terminal, improved the frequency domain granularity configuration flexibility of giving the correct time on the subband CSI.

The concrete implementation that the CSI that provides for the embodiment of the invention reports control device that subband CSI is configured can repeat no more with reference to the description of said method here.

The embodiment of the invention also provides a kind of CSI reporting device, and its implementation structure is as shown in Figure 4, and concrete implementation structure is following:

Configuration information receiver module 4001; Be used to receive the frequency domain granularity configuration information that gives the correct time on the subband CSI of network equipment transmission; Carry this network equipment in the frequency domain granularity configuration information that gives the correct time on this subband CSI and be the frequency domain granularity of giving the correct time on the subband CSI of the subband CSI Information Selection that the terminal need report, the frequency domain granularity of giving the correct time on this subband CSI is to select the frequency domain granularity set that reports the corresponding subband CSI of combination of pattern to give the correct time from current system bandwidth with for the CSI of terminal configuration by this network equipment.

CSI information calculations module 4002 is used for the frequency domain granularity of giving the correct time according on the above-mentioned subband CSI, calculates subband CSI information.

CSI reporting module 4003 is used for according to above-mentioned for the CSI of terminal configuration reports pattern, reports above-mentioned subband CSI information constantly in predetermined reporting.

The CSI reporting device that the embodiment of the invention provides can be the terminal.

Because the frequency domain granularity that one group of CSI reports pattern and system bandwidth to give the correct time on can corresponding a plurality of subband CSI; The frequency domain granularity of giving the correct time on the subband CSI that the terminal can be selected according to network equipment is calculated subband CSI information and is reported, and has improved the frequency domain granularity configuration flexibility of giving the correct time on the subband CSI.

If carry network equipment in the frequency domain granularity configuration information that gives the correct time on the above-mentioned subband CSI and be the frequency domain granularity of giving the correct time on the subband CQI that subband CQI that the terminal need report selects; The frequency domain granularity of giving the correct time on the subband PMI that selects with the subband PMI that need report for the terminal; Then CSI information calculations module 4002 comprises, subband PMI calculating sub module and subband CQI calculating sub module.

Wherein, subband PMI calculating sub module is used for the frequency domain granularity of giving the correct time according on the above-mentioned subband PMI, calculates subband PMI.

Subband CQI calculating sub module is used for; If there is common factor in the RB that subband comprised that subband CQI is corresponding with the corresponding RB that subband comprised of a plurality of subband PMI; Suppose to have used the subband PMI corresponding respectively on a plurality of RB subclass of the subband that above-mentioned subband CQI is corresponding in the downlink transfer, according to frequency domain granularity of giving the correct time on the above-mentioned subband CQI and above-mentioned subband PMI with the RB subclass; Calculate subband CQI, the RB in the above-mentioned RB subclass exists with a corresponding RB that subband comprised of subband PMI and occurs simultaneously.

For the embodiment of the invention CSI reporting device is provided, the concrete working method of its each module can repeat no more with reference to the description of said method here.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.

Claims

1. a channel condition information CSI method for controlling reporting is characterized in that, comprising:

2. method according to claim 1; It is characterized in that; Report the frequency domain granularity set that the corresponding subband CSI of combination of pattern gives the correct time from current system bandwidth with for the CSI of terminal configuration; The frequency domain granularity of giving the correct time on the subband CSI Information Selection subband CSI that need report for said terminal comprises:

Actual conditions according to channel; From current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity set that the corresponding subband CSI of combination of pattern gives the correct time, the frequency domain granularity of giving the correct time on the subband CSI Information Selection subband CSI that need report for said terminal.

3. method according to claim 2 is characterized in that, the actual conditions of said channel comprise following any one or multiple combination:

The frequency selectivity of channel is used to report the capacity of the feedback channel of subband CSI information, the path loss of channel uplink power.

4. according to any described method of claim 1～3; It is characterized in that; The CSI information that said terminal need report comprises: sub-band channel quality indication CQI and subband pre-coding matrix indication PMI; From current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity set that the corresponding subband CSI of combination of pattern gives the correct time, the frequency domain granularity of giving the correct time on the subband CSI Information Selection subband CSI that need report for said terminal comprises:

Report first corresponding relation of the frequency domain granularity set of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; Selective system bandwidth and report the frequency domain granularity of giving the correct time on the corresponding subband CSI of the combination of pattern, the frequency domain granularity of giving the correct time on the subband CQI as the subband CQI selection that need report for the CSI of terminal configuration for said terminal;

And report second corresponding relation of the frequency domain granularity set of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; From current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity that the corresponding a plurality of subband CSI of combination of pattern give the correct time, the subband PMI that need report for said terminal selects the frequency domain granularity of giving the correct time on the subband PMI;

Said first corresponding relation comprises:

It is CSI based on Physical Uplink Shared Channel PUSCH when reporting pattern 1-2 or 3-1 that CSI reports pattern: if system bandwidth is 6-7 Resource Block RB, the frequency domain granularity of giving the correct time on the corresponding subband CSI is whole RB that system bandwidth comprises; If system bandwidth is that the frequency domain granularity of giving the correct time on the subband CSI of 8-26 RB, correspondence is 4 RB; If system bandwidth is 27-110 RB, the frequency domain granularity of giving the correct time on the corresponding subband CSI is 6 RB;

It is CSI based on PUSCH when reporting pattern 2-2 that CSI reports pattern: if system bandwidth is 6-7 RB, the frequency domain granularity of giving the correct time on the corresponding subband CSI is whole RB that system bandwidth comprises; If system bandwidth is 8-26 RB, the frequency domain granularity of giving the correct time on the corresponding subband CSI is 2 RB; If system bandwidth is 27-63 RB, the frequency domain granularity of giving the correct time on the corresponding subband CSI is 3 RB; If system bandwidth is 64-110 RB, the frequency domain granularity of giving the correct time on the corresponding subband CSI is 4 RB;

In said second corresponding relation, comprise the frequency domain granularity of giving the correct time on a plurality of subband CSI in the frequency domain granularity set of giving the correct time on the subband CSI.

5. according to any described method of claim 1～3, it is characterized in that the CSI information that said terminal need report comprises: subband CQI and subband PMI; From current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity set that the corresponding subband CSI of combination of pattern gives the correct time, the frequency domain granularity of giving the correct time on the subband CSI Information Selection subband CSI that need report for said terminal comprises:

Report second corresponding relation of the frequency domain granularity set of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; From current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity that the corresponding a plurality of subband CSI of combination of pattern give the correct time, the subband CQI that need report for said terminal selects the frequency domain granularity of giving the correct time on the subband CSI;

And report first corresponding relation of the frequency domain granularity set of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; Select current system bandwidth and report the frequency domain granularity of giving the correct time on the corresponding subband CSI of the combination of pattern, the frequency domain granularity of giving the correct time on the subband PMI as the subband PMI selection that need report for the CSI of terminal configuration for said terminal;

Said first corresponding relation comprises:

It is CSI based on Physical Uplink Shared Channel PUSCH when reporting pattern 1-2 or 3-1 that CSI reports pattern: if system bandwidth is 6-7 RB, the frequency domain granularity of giving the correct time on the corresponding subband CSI is whole RB that system bandwidth comprises; If system bandwidth is that the frequency domain granularity of giving the correct time on the subband CSI of 8-26 RB, correspondence is 4 RB; If system bandwidth is 27-110 RB, the frequency domain granularity of giving the correct time on the corresponding subband CSI is 6 RB;

6. according to any described method of claim 1～3; It is characterized in that; The CSI information that said terminal need report comprises: subband CQI and subband PMI; From current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity set that the corresponding subband CSI of combination of pattern gives the correct time, the frequency domain granularity of giving the correct time on the subband CSI Information Selection subband CSI that need report for said terminal comprises:

Report second corresponding relation of the frequency domain granularity of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; From current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity that the corresponding a plurality of subband CSI of combination of pattern give the correct time, the subband CQI that need report for said terminal selects the frequency domain granularity of giving the correct time on the subband CQI;

And report second corresponding relation of the frequency domain granularity of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; From current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity that the corresponding a plurality of subband CSI of combination of pattern give the correct time, the subband PMI that need report for said terminal selects the frequency domain granularity of giving the correct time on the subband PMI;

7. according to any described method of claim 1～3; It is characterized in that; The CSI information that said terminal need report comprises: subband CQI and subband PMI; From current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity set that the corresponding subband CSI of combination of pattern gives the correct time, the frequency domain granularity of giving the correct time on the subband CSI Information Selection subband CSI that need report for said terminal comprises:

Report first corresponding relation of the frequency domain granularity of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; Select current system bandwidth and report the frequency domain granularity of giving the correct time on the corresponding subband CSI of the combination of pattern, the frequency domain granularity of giving the correct time on the subband CQI as the subband CQI selection that need report for the CSI of terminal configuration for said terminal;

And report first corresponding relation of the frequency domain granularity of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; Select current system bandwidth and report the frequency domain granularity of giving the correct time on the corresponding subband CSI of the combination of pattern, the frequency domain granularity of giving the correct time on the subband PMI as the subband PMI selection that need report for the CSI of terminal configuration for said terminal;

Said first corresponding relation comprises:

It is CSI based on PUSCH when reporting pattern 2-2 that CSI reports pattern: if system bandwidth is 6-7 RB, the frequency domain granularity of giving the correct time on the corresponding subband CSI is whole RB that system bandwidth comprises; If system bandwidth is 8-26 RB, the frequency domain granularity of giving the correct time on the corresponding subband CSI is 2 RB; If system bandwidth is 27-63 RB, the frequency domain granularity of giving the correct time on the corresponding subband CSI is 3 RB; If system bandwidth is 64-110 RB, the frequency domain granularity of giving the correct time on the corresponding subband CSI is 4 RB.

8. according to any described method of claim 1～3; It is characterized in that; The CSI information that said terminal need report comprises: subband CQI; From current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity set that the corresponding subband CSI of combination of pattern gives the correct time, the frequency domain granularity of giving the correct time on the subband CSI Information Selection subband CSI that need report for said terminal comprises:

Report first corresponding relation of the frequency domain granularity of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; Select current system bandwidth and, indicate the frequency domain granularity of giving the correct time on the subband CQI of CQI selection as the sub-band channel quality that need report for said terminal for the CSI of terminal configuration reports the frequency domain granularity of giving the correct time on the corresponding subband CSI of the combination of pattern;

Perhaps,

Said first corresponding relation comprises:

9. a channel condition information CSI report method is characterized in that, comprising:

10. method according to claim 9; It is characterized in that; The frequency domain granularity of giving the correct time on the subband PMI of the subband pre-coding matrix indication PMI selection of carrying said network equipment in the frequency domain granularity configuration information that gives the correct time on the said subband CSI and be the frequency domain granularity of giving the correct time on the subband CQI that sub-band channel quality indication CQI that the terminal need report selects and need report for the terminal; According to the frequency domain granularity of giving the correct time on the said subband CSI, calculate subband CSI information, specifically comprise:

According to the frequency domain granularity of giving the correct time on the said subband PMI, calculate subband PMI;

If there is common factor in the Resource Block RB that subband comprised that subband CQI is corresponding with the corresponding RB that subband comprised of a plurality of subband PMI; Suppose to have used the subband PMI corresponding respectively on a plurality of RB subclass of the subband that the CQI of subband described in the downlink transfer is corresponding with the RB subclass; According to the frequency domain granularity of giving the correct time on the said subband CQI; With said subband PMI, calculate subband CQI, the RB in the said RB subclass exists with a corresponding RB that subband comprised of subband PMI and occurs simultaneously.

11. a channel condition information CSI reports control device, it is characterized in that, comprising:

12. device according to claim 11; It is characterized in that; Said frequency domain granularity configuration module specifically is used for; According to the actual conditions of channel, from current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity set that the corresponding subband CSI of combination of pattern gives the correct time, the frequency domain granularity of giving the correct time on the subband CSI Information Selection subband CSI that need report for said terminal.

13. device according to claim 12 is characterized in that, the actual conditions of said channel comprise following any one or multiple combination:

14. according to any described device of claim 11～13; It is characterized in that; The CSI information that said terminal need report comprises: sub-band channel quality indication CQI and subband pre-coding matrix indication PMI; Said frequency domain granularity configuration module specifically is used for; Report first corresponding relation of the frequency domain granularity set of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI, select current system bandwidth and report the frequency domain granularity of giving the correct time on the corresponding subband CSI of the combination of pattern, the frequency domain granularity of giving the correct time on the subband CQI as the subband CQI selection that need report for the CSI of terminal configuration for said terminal; And report second corresponding relation of the frequency domain granularity set of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; From current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity that the corresponding a plurality of subband CSI of combination of pattern give the correct time, the subband PMI that need report for said terminal selects the frequency domain granularity of giving the correct time on the subband PMI;

Said first corresponding relation comprises:

15. according to any described device of claim 11～13; It is characterized in that; The CSI information that said terminal need report comprises: subband CQI and subband PMI; Said frequency domain granularity configuration module specifically is used for; Report second corresponding relation of the frequency domain granularity set of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI, from current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity that the corresponding a plurality of subband CSI of combination of pattern give the correct time, the frequency domain granularity of giving the correct time on the subband CQI selection subband CQI that need report for said terminal; And report first corresponding relation of the frequency domain granularity set of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; Select current system bandwidth and report the frequency domain granularity of giving the correct time on the corresponding subband CSI of the combination of pattern, the frequency domain granularity of giving the correct time on the subband PMI as the subband PMI selection that need report for the CSI of terminal configuration for said terminal;

Said first corresponding relation comprises:

16. according to any described device of claim 11～13; It is characterized in that; The CSI information that said terminal need report comprises: subband CQI and subband PMI; Said frequency domain granularity configuration module specifically is used for; Report second corresponding relation of the frequency domain granularity of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI, from current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity that the corresponding a plurality of subband CSI of combination of pattern give the correct time, the subband CQI that need report for said terminal selects the frequency domain granularity of giving the correct time on the subband CQI; And report second corresponding relation of the frequency domain granularity of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; From current system bandwidth with for the CSI of terminal configuration reports the frequency domain granularity that the corresponding a plurality of subband CSI of combination of pattern give the correct time, the subband PMI that need report for said terminal selects the frequency domain granularity of giving the correct time on the subband PMI;

17. according to any described device of claim 11～13; It is characterized in that; The CSI information that said terminal need report comprises: subband CQI and subband PMI; Said frequency domain granularity configuration module specifically is used for; Report first corresponding relation of the frequency domain granularity of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI, select current system bandwidth and report the frequency domain granularity of giving the correct time on the corresponding subband CSI of the combination of pattern, the frequency domain granularity of giving the correct time on the subband CQI as the subband CQI selection that need report for the CSI of terminal configuration for said terminal; And report first corresponding relation of the frequency domain granularity of giving the correct time on pattern, system bandwidth and the subband CSI according to CSI; Select current system bandwidth and report the frequency domain granularity of giving the correct time on the corresponding subband CSI of the combination of pattern, the frequency domain granularity of giving the correct time on the subband PMI as the subband PMI selection that need report for the CSI of terminal configuration for said terminal;

Said first corresponding relation comprises:

18., it is characterized in that the CSI information that said terminal need report comprises according to any described device of claim 11～13: subband CQI, said frequency domain granularity configuration module specifically is used for:

Perhaps,

Said first corresponding relation comprises:

19. a channel condition information CSI reporting device is characterized in that, comprising:

20. device according to claim 19; It is characterized in that; The frequency domain granularity of giving the correct time on the subband PMI of the subband pre-coding matrix indication PMI selection of carrying said network equipment in the frequency domain granularity configuration information that gives the correct time on the said subband CSI and be the frequency domain granularity of giving the correct time on the subband CQI that sub-band channel quality indication CQI that the terminal need report selects and need report for the terminal; Said CSI information calculations module comprises:

Subband PMI calculating sub module is used for the frequency domain granularity of giving the correct time according on the said subband PMI, calculates subband PMI;

Subband CQI calculating sub module; All there is common factor if be used for the corresponding Resource Block RB that subband comprised of subband CQI with the corresponding RB that subband comprised of a plurality of subband PMI; Suppose to have used the subband PMI corresponding respectively on a plurality of RB subclass of the subband that the CQI of subband described in the downlink transfer is corresponding with the RB subclass; According to the frequency domain granularity of giving the correct time on the said subband CQI; With said subband PMI, calculate subband CQI, the RB in the said RB subclass exists with a corresponding RB that subband comprised of subband PMI and occurs simultaneously.