CN102638337B

CN102638337B - CSI (Channel State Information) reporting control method as well as CSI reporting method and device

Info

Publication number: CN102638337B
Application number: CN201210119226.4A
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: 2015-01-07
Anticipated expiration: 2032-04-20
Also published as: WO2013155977A1; CN102638337A

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, particularly relate to a kind of CSI method for controlling reporting and device, CSI report method and device.

Background technology

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

Such as, existing normalized definition based on the acyclic CSI of PUSCH report in process, comprise 5 kinds of CSI and report pattern.Wherein for needing the CSI reporting PMI to report for pattern, three kinds of CSI as shown in table 1 can be adopted to report pattern:

Table 1

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

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

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

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

Table 2

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

The frequency domain granularity that subband CSI gives the correct time refers to, CSI feedback for the bandwidth of subband.If need the subband CSI reported both to comprise subband CQI also comprise subband PMI, then the frequency domain granularity of subband CQI giving the correct time is identical with the frequency domain granularity that subband PMI gives the correct time.

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

Table 3

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

Wherein, system bandwidth describe with the frequency domain granularity k RB that subband CSI gives the correct time.Such as, system bandwidth during for 64-110 RB, the frequency domain granularity k that subband CSI gives the correct time is 8 RB.For system bandwidth for 6-7 RB, the frequency domain granularity k value that subband CSI gives the correct time is NA (representing whole RB that system bandwidth comprises).

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

Table 4

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

In the CSI feedback scheme of existing LTE system, after CSI reports pattern and system bandwidth is determined, the frequency domain granularity that subband CSI gives the correct time uniquely is determined, dumb to the configuration of the frequency domain granularity that subband CSI gives the correct time.

Summary of the invention

The object of this invention is to provide a kind of CSI method for controlling reporting, CSI report method and device, configure inflexible problem to solve the frequency domain granularity that existing subband CSI gives the correct time.

The object of the invention is to be achieved through the following technical solutions:

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

From current system bandwidth and report the subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration the set of frequency domain granularity in, for the frequency domain granularity that the subband CSI Information Selection subband CSI that described terminal need report gives the correct time, in the frequency domain granularity set that described subband CSI gives the correct time, comprise the frequency domain granularity that at least one subband CSI gives the correct time;

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

A kind of channel condition information CSI report method, comprising:

Receive the frequency domain granularity configuration information that the subband CSI of network equipment transmission gives the correct time, carrying described network equipment in the frequency domain granularity configuration information that described subband CSI gives the correct time is the frequency domain granularity that the subband CSI of the subband CSI Information Selection that terminal need report gives the correct time, the frequency domain granularity that described subband CSI gives the correct time be by described network equipment from current system bandwidth and report the subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration the set of frequency domain granularity in select, the frequency domain granularity set that described subband CSI gives the correct time comprises the frequency domain granularity that at least one subband CSI gives the correct time,

According to the frequency domain granularity that described subband CSI gives the correct time, calculate subband CSI information;

Report pattern according to the described CSI for terminal configuration, report described subband CSI information in the predetermined moment that reports.

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

Frequency domain granularity configuration module, for from current system bandwidth and report the subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration the set of frequency domain granularity in, for the frequency domain granularity that the subband CSI Information Selection subband CSI that described terminal need report gives the correct time, in the frequency domain granularity set that described subband CSI gives the correct time, comprise the frequency domain granularity that at least one subband CSI gives the correct time;

Configuration information sending module, for sending the frequency domain granularity configuration information that subband CSI gives the correct time to described terminal, in the frequency domain granularity configuration information that described subband CSI gives the correct time, carry the frequency domain granularity that the subband CSI of the subband CSI Information Selection that need report for described terminal gives the correct time.

A kind of channel condition information CSI reporting device, comprising:

Configuration information receiver module, for receiving the frequency domain granularity configuration information that the subband CSI of network equipment transmission gives the correct time, carrying described network equipment in the frequency domain granularity configuration information that described subband CSI gives the correct time is the frequency domain granularity that the subband CSI of the subband CSI Information Selection that terminal need report gives the correct time, the frequency domain granularity that described subband CSI gives the correct time be by described network equipment from current system bandwidth and report the subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration the set of frequency domain granularity in select, the frequency domain granularity set that described subband CSI gives the correct time comprises the frequency domain granularity that at least one subband CSI gives the correct time,

CSI information computational module, for according to the frequency domain granularity that described subband CSI gives the correct time, calculates subband CSI information;

CSI reporting module, for reporting pattern according to the described CSI for terminal configuration, reports described subband CSI information in the predetermined moment that reports.

According to the technical scheme that the invention described above embodiment provides, due to the frequency domain granularity that one group of CSI reports pattern and system bandwidth can corresponding multiple subband CSI give the correct time, according to above-mentioned processing procedure, network equipment therefrom can select the frequency domain granularity that a subband CSI gives the correct time, and the frequency domain granularity that the subband CSI of selection gives the correct time is sent to terminal, improve the flexibility of the frequency domain granularity configuration that subband CSI gives the correct time.

Accompanying drawing explanation

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

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

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

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

Embodiment

Embodiments provide a kind of CSI method for controlling reporting, its implementation as shown in Figure 1, specifically comprises following operation:

Step 100, from current system bandwidth and report the subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration the set of frequency domain granularity in, be the frequency domain granularity that the subband CSI Information Selection subband CSI that this terminal need report gives the correct time;

Wherein, the frequency domain granularity that at least one subband CSI gives the correct time is comprised in the frequency domain granularity set of subband CSI giving the correct time.That is, one group of CSI reports the frequency domain granularity that pattern and system bandwidth can corresponding multiple subband CSI be given the correct time.

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

Wherein, the frequency domain granularity configuration information that above-mentioned subband CSI gives the correct time can be sent by physical layer signaling or high-level signaling, also can be sent by other message sent to terminal, can also send as independent message.

Due to the frequency domain granularity that one group of CSI reports pattern and system bandwidth can corresponding multiple subband CSI give the correct time, according to above-mentioned processing procedure, network equipment (such as eNB) therefrom can select the frequency domain granularity that a subband CSI gives the correct time, and the frequency domain granularity that the subband CSI of selection gives the correct time is sent to terminal, improve the flexibility of the frequency domain granularity configuration that subband CSI gives the correct time.

Communication system performance depends on the selection of dispatching algorithm to a great extent.If terminal can feed back abundanter CSI, then advantageously transmit by appropriate transmission means in network side in the appropriate terminal of appropriate scheduling of resource.The frequency domain granularity that subband CSI gives the correct time is larger, and the CSI of terminal feedback is abundanter.On the other hand, the selection of the frequency domain granularity of subband CSI giving the correct time can bring impact to feedback overhead, feedback resources and power loss again.ENB needed according to the variation of applied environment and transfer of data, the needing for subband CSI configures frequency domain granularity of scheduling.Wherein, the variation of applied environment and transfer of data, scheduling need reflected by the actual conditions of channel.Specific to implementation of the present invention, match with the actual conditions of channel to enable the subband CSI information of terminal to report, with the actual conditions making subband CSI information reflect channel better, thus raising systematic function, preferably, the specific implementation of above-mentioned steps 110 can be: according to the actual conditions of channel, from current system bandwidth and report the subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration the set of frequency domain granularity in, select the frequency domain granularity that subband CSI gives the correct time.

Wherein, the actual conditions of channel comprise following any one or multiple combination: the frequency selectivity of channel, for reporting the capacity of the feedback channel of subband CSI information, the path loss of channel uplink power, channel parameter that other may be relevant to the frequency domain granularity that subband CSI gives the correct time etc.

Therefore the frequency selectivity of channel often depends on can change the Multipath distribution situation in communication environments 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, now, the frequency domain granularity that the subband CSI needing the subband CSI Information Selection that need report for terminal larger gives the correct time.When the frequency selectivity of channel is lower, the frequency domain correlation of channel is higher, if adopt larger frequency domain granularity, larger redundancy is there is between each subband CSI information, thus cause the waste of feedback overhead, now, the frequency domain granularity that the subband CSI needing the subband CSI Information Selection that need report for terminal less gives the correct time.

For the selection reporting the capacity of the feedback channel of subband CSI information also can have influence on the frequency domain granularity that subband CSI gives the correct time to a certain extent.If activated terminals quantity is more in community, the capacity of feedback channel is inadequate, and eNB wishes the subband CSI information obtaining terminal to report, then the frequency domain granularity that the subband CSI that the CSI Information Selection that need be able to report for terminal is less gives the correct time.Otherwise if activated terminals negligible amounts in community, the capacity of feedback channel is comparatively sufficient, then the frequency domain granularity that the subband CSI that the CSI Information Selection that need be able to report for terminal is larger gives the correct time, to provide abundanter CSI information.

When terminal distance eNB close together, the path loss (i.e. the path loss of channel uplink power) of the ascending power of terminal is less, can select the frequency domain granularity that larger subband CSI gives the correct time.Otherwise, the frequency domain granularity that less subband CSI gives the correct time can be selected, to reduce the power that feedback consumes.

Wherein, CSI feedback for the bandwidth of subband larger, the frequency domain granularity that corresponding subband CSI gives the correct time is less; Otherwise, CSI feedback for the bandwidth of subband larger, the frequency domain granularity that corresponding subband CSI gives the correct time is less.

In actual application, the actual conditions of channel are determined by above-mentioned multiple channel parameter, when selecting the frequency domain granularity that subband CSI gives the correct time, just need to consider the channel parameter that each may be relevant to the frequency domain granularity that subband CSI gives the correct time.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 not paying creative work.

Below by with concrete Application Example, CSI method for controlling reporting provided by the invention is described in detail.

Application Example one

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

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

Wherein, the first above-mentioned corresponding relation refers to that in existing LTE communication standard, defined CSI reports the corresponding relation of the frequency domain granularity that pattern, system bandwidth and subband CSI give the correct time.Such as, if CSI reports pattern to be report pattern 1-2 or 3-1 based on the CSI of PUSCH, then the first above-mentioned corresponding relation can be as shown in table 3.If CSI reports pattern to be report pattern 2-2 based on the CSI of PUSCH, then the first above-mentioned corresponding relation can be as shown in table 4.

Step 210, eNB report the second corresponding relation of the frequency domain granularity set that pattern, system bandwidth and subband CSI give the correct time according to CSI, from current system bandwidth and report multiple subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration frequency domain granularity in, be the frequency domain granularity that subband PMI that this terminal need report selects subband PMI gives the correct time.

Wherein, in the second above-mentioned corresponding relation, the frequency domain granularity set that subband CSI gives the correct time comprises the frequency domain granularity that multiple subband CSI gives the correct time.

Preferably, eNB is according to the actual conditions of channel, and the second corresponding relation of the frequency domain granularity set that pattern, system bandwidth and subband CSI give the correct time is reported according to CSI, from current system bandwidth and report multiple subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration frequency domain granularity in, be the frequency domain granularity that subband PMI that this terminal need report selects subband PMI gives the correct time.For the description of the actual conditions of channel, in the invention described above embodiment, there is description, repeat no more here.

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

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

According to the method that the invention described above Application Example one provides, when needing at the same time to report subband CQI and subband PMI, be respectively the frequency domain granularity that subband CQI and subband PMI configuration are given the correct time, make the configuration of the frequency domain granularity that subband CSI gives the correct time more flexible, the actual conditions of channel can be reflected better.

Application Example two

Step 300, eNB report the second corresponding relation of the frequency domain granularity set that pattern, system bandwidth and subband CSI give the correct time according to CSI, from current system bandwidth and report multiple subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration frequency domain granularity in, be the frequency domain granularity that subband CQI that this terminal need report selects subband CQI gives the correct time.

Preferably, eNB is according to the actual conditions of channel, and the second corresponding relation of the frequency domain granularity set that pattern, system bandwidth and subband CSI give the correct time is reported according to CSI, from current system bandwidth and report multiple subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration frequency domain granularity in, be the frequency domain granularity that subband CQI that this terminal need report selects subband CQI gives the correct time.For the description of the actual conditions of channel, in the invention described above embodiment, there is description, repeat no more here.

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

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

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

In Application Example two, the explanation of the first corresponding relation and the second corresponding relation with reference to Application Example one, can be repeated no more here.

According to the method that the invention described above Application Example two provides, when needing at the same time to report subband CQI and subband PMI, be respectively the frequency domain granularity that subband CQI and subband PMI configuration are given the correct time, make the configuration of the frequency domain granularity that subband CSI gives the correct time more flexible, the actual conditions of channel can be reflected better.

Application Example three

Step 400, eNB report the second corresponding relation of the frequency domain granularity that pattern, system bandwidth and subband CSI give the correct time according to CSI, from current system bandwidth and report multiple subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration frequency domain granularity in, be the frequency domain granularity that subband CQI that this terminal need report selects subband CQI gives the correct time.

Preferably, eNB is according to the actual conditions of channel, and the second corresponding relation of the frequency domain granularity that pattern, system bandwidth and subband CSI give the correct time is reported according to CSI, from current system bandwidth and report multiple subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration frequency domain granularity in, be the frequency domain granularity that subband CQI that this terminal need report selects subband CQI gives the correct time.For the description of the actual conditions of channel, in the invention described above embodiment, there is description, repeat no more here.

Step 410, eNB report the second corresponding relation of the frequency domain granularity that pattern, system bandwidth and subband CSI give the correct time according to CSI, from current system bandwidth and report multiple subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration frequency domain granularity in, be the frequency domain granularity that subband PMI that this terminal need report selects subband PMI gives the correct time.

Preferably, eNB is according to the actual conditions of channel, and the second corresponding relation of the frequency domain granularity that pattern, system bandwidth and subband CSI give the correct time is reported according to CSI, from current system bandwidth and report multiple subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration frequency domain granularity in, be the frequency domain granularity that subband PMI that this terminal need report selects subband PMI gives the correct time.For the description of the actual conditions of channel, in the invention described above embodiment, there is description, repeat no more here.

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

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

In Application Example three, the explanation of the second corresponding relation with reference to Application Example one, can be repeated no more here.

According to the method that the invention described above Application Example three provides, when needing at the same time to report subband CQI and subband PMI, be respectively the frequency domain granularity that subband CQI and subband PMI configuration are given the correct time, make the configuration of the frequency domain granularity that subband CSI gives the correct time more flexible, the actual conditions of channel can be reflected better.

Application Example four

Step 500, eNB report the first corresponding relation of the frequency domain granularity that pattern, system bandwidth and subband CSI give the correct time according to CSI, select current system bandwidth and report the frequency domain granularity that the subband CSI of the combination correspondence of pattern gives the correct time, the frequency domain granularity that the subband CQI as the sub-band channel quality instruction CQI selection that need report for this terminal gives the correct time for the CSI of terminal configuration.

Step 510, eNB report the first corresponding relation of the frequency domain granularity that pattern, system bandwidth and subband CSI give the correct time according to CSI, select current system bandwidth and report the frequency domain granularity that the subband CSI of the combination correspondence of pattern gives the correct time, the frequency domain granularity that the subband PMI as the sub-band channel quality instruction PMI selection that need report for this terminal gives the correct time for the CSI of terminal configuration.

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

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

In Application Example four, the explanation of the first corresponding relation with reference to Application Example one, can be repeated no more here.

According to the method that the invention described above Application Example four provides, when needing at the same time to report subband CQI and subband PMI, be respectively the frequency domain granularity that subband CQI and subband PMI configuration are given the correct time, make the configuration of the frequency domain granularity that subband CSI gives the correct time more flexible, the actual conditions of channel can be reflected better.

Application Example five

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

Step 600, eNB report the first corresponding relation of the frequency domain granularity that pattern, system bandwidth and subband CSI give the correct time according to CSI, select current system bandwidth and report the frequency domain granularity that the subband CSI of the combination correspondence of pattern gives the correct time, the frequency domain granularity that the subband CQI as the sub-band channel quality instruction CQI selection that need report for this terminal gives the correct time for the CSI of terminal configuration.

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

In Application Example five, the explanation of the first corresponding relation with reference to Application Example one, can be repeated no more here.

Application Example six

Step 700, eNB report the second corresponding relation of the frequency domain granularity that pattern, system bandwidth and subband CSI give the correct time according to CSI, from current system bandwidth and report multiple subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration frequency domain granularity in, be the frequency domain granularity that subband CQI that this terminal need report selects subband CQI gives the correct time.

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

In Application Example six, the explanation of the second corresponding relation with reference to Application Example one, can be repeated no more here.

Above-mentioned each Application Example reports process for acyclic CSI, is described in detail CSI method for controlling reporting provided by the invention.It 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 thinking, for needing the application scenarios reporting subband CSI information, all can adopt CSI method for controlling reporting provided by the invention.

For the second corresponding relation described in each embodiment of the invention described above.In actual application, can according to channel actual conditions, pre-determine one group of CSI and report the frequency domain granularity set that pattern and subband CSI corresponding to system bandwidth give the correct time; Also can according to the channel situation that may occur, pre-determine one group of CSI and report the frequency domain granularity set that pattern and subband CSI corresponding to system bandwidth give the correct time.Certainly, do not get rid of according to other selection rules yet, pre-determine one group of CSI and report the frequency domain granularity set that pattern and subband CSI corresponding to system bandwidth give the correct time.

Table 5 provides a kind of the second special corresponding relation.

Table 5

Wherein, when the call number of expression system bandwidth is i, the set that the frequency domain granularity that ni the optional subband CSI that system bandwidth is corresponding gives the correct time is formed. value represent middle jth (j=1 ..., ni) RB quantity corresponding to frequency domain granularity that individual CSI gives the correct time.When the call number of system bandwidth is i, if the frequency domain granularity that CSI gives the correct time is then comprise in whole system bandwidth individual subband.If then wherein the bandwidth of individual subband is the bandwidth of a subband is in addition minimum may value be 1, maximum possible value is

For wherein contain again at least one subclass, when each subclass represents that system bandwidth call number is i, the frequency domain granularity set that the subband CSI that a kind of CSI reports pattern corresponding gives the correct time.

Embodiments provide a kind of CSI report method, its implementation as shown in Figure 2, specifically comprises following operation:

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

Wherein, the frequency domain granularity set of subband CSI giving the correct time comprises the frequency domain granularity that at least one subband CSI gives the correct time.That is, one group of CSI reports the frequency domain granularity that pattern and system bandwidth can corresponding multiple subband CSI be given the correct time.

Step 810, according to the frequency domain granularity that above-mentioned subband CSI gives the correct time, calculate subband CSI information.

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

Due to the frequency domain granularity that one group of CSI reports pattern and system bandwidth can corresponding multiple subband CSI give the correct time, according to above-mentioned processing procedure, the frequency domain particle sizer operator band CSI information that the subband CSI that terminal can be selected according to network equipment gives the correct time also reports, and improves the flexibility of the frequency domain granularity configuration that subband CSI gives the correct time.

In the process of terminal to report CSI, except reporting subband CSI information, also report broadband CSI information.Accordingly, also broadband CSI information is calculated.Concrete, terminal reports mode corresponding to pattern according to network equipment for CSI that it configures, measures and calculates CSI information.Illustrate the account form of various CSI information below.

Calculating for broadband P MI: report the RI calculated in pattern based on current C SI, terminal hypothesis total system bandwidth employs identical precoding, and from code book, select a pre-coding matrix, calculates broadband P MI according to the pre-coding matrix selected.

For the calculating of subband PMI, according to the frequency domain granularity that subband PMI gives the correct time, calculate subband PMI, concrete: the RI calculated in pattern is reported based on current C SI, for each subband, terminal hypothesis employs identical precoding to this subband, and from code book, select a pre-coding matrix, calculates subband PMI according to the pre-coding matrix selected.Wherein, the bandwidth of subband is determined by the frequency domain granularity that subband PMI gives the correct time.

Calculating for broadband CQI:

If report broadband CQI and subband PMI simultaneously, the RI calculated in pattern is then reported based on current C SI, terminal supposes the PMI for this subband each subband employing respectively terminal to report, and calculate the broadband CQI of each code word in this case, wherein, the bandwidth of subband is determined by the frequency domain granularity that subband PMI gives the correct time;

If report broadband CQI and broadband P MI simultaneously, then report the RI calculated in pattern based on current C SI, terminal hypothesis total system bandwidth all unification employs 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 calculated in pattern based on current C SI, terminal is that on each subband, each code word calculates subband CQI.

Wherein, for subband CQI for arbitrary subband, if the RB that its whole RB comprised comprise for a certain subband PMI, then terminal is when calculating the subband CQI of each code word on this subband, suppose this subband CQI in downlink transfer for subband on employ above-mentioned a certain subband PMI.

For subband CQI for arbitrary subband, if the RB that RB set and multiple PMI that it comprises report subband to comprise gathers all there is common factor, then the specific implementation of above-mentioned steps 810 can be: multiple RB subsets of the subband that subband CQI is corresponding described in terminal hypothesis downlink transfer employ the subband PMI corresponding with RB subset respectively, according to the frequency domain granularity that described subband CQI gives the correct time, with described subband PMI, calculate subband CQI, the RB that the subband that the RB in described RB subset is corresponding with subband PMI comprises exists and occurs simultaneously.Concrete, when terminal calculates the subband CQI of each code word on this subband, suppose this subband CQI in downlink transfer for subband multiple RB subsets on employ the subband PMI of the correspondence that there is with it common factor respectively.Such as:

Suppose CQI subband (namely subband CQI report for subband) k contains N number of RB, can be designated as respectively according to frequency mode from low to high by exist with it PMI subband that P size of common factor is Q (namely subband PMI report for subband) corresponding to RB set be designated as respectively

{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 _p.Then CQI subband k can be divided into P subset:

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 CQI subband k calculates and should suppose above employ PMI respectively ₁, PMI ₂..., PMI _p.That is, PMI is used ₁calculate subband CQI, use PMI ₂calculate subband CQI, by that analogy, use PMI _pcalculate subband CQI, then, will subband CQI carry out matching, obtain the subband CQI of CQI subband k.

If report subband CQI and broadband P MI simultaneously, then report the RI calculated in pattern based on current C SI, terminal supposes that each subband unification employs the broadband P MI of terminal to report, and calculates the subband CQI of each code word on each subband in this case.

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

Frequency domain granularity configuration module 3001, for from current system bandwidth and report the subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration the set of frequency domain granularity in, be the frequency domain granularity that the subband CSI Information Selection subband CSI that this terminal need report gives the correct time.

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

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

Due to the frequency domain granularity that one group of CSI reports pattern and system bandwidth can corresponding multiple subband CSI give the correct time, network equipment (such as eNB) therefrom can select the frequency domain granularity that a subband CSI gives the correct time, and the frequency domain granularity that the subband CSI of selection gives the correct time is sent to terminal, improve the flexibility of the frequency domain granularity configuration that subband CSI gives the correct time.

The specific implementation that the CSI provided for the embodiment of the present invention reports control device to be configured subband CSI, with reference to the description of said method, can repeat no more here.

The embodiment of the present invention additionally provides a kind of CSI reporting device, and as shown in Figure 4, specific implementation structure is as follows for its implementation structure:

Configuration information receiver module 4001, for receiving the frequency domain granularity configuration information that the subband CSI of network equipment transmission gives the correct time, carrying this network equipment in the frequency domain granularity configuration information that this subband CSI gives the correct time is the frequency domain granularity that the subband CSI of the subband CSI Information Selection that terminal need report gives the correct time, the frequency domain granularity that this subband CSI gives the correct time be by this network equipment from current system bandwidth and report the subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration the set of frequency domain granularity in select.

CSI information computational module 4002, for according to the frequency domain granularity that above-mentioned subband CSI gives the correct time, calculates subband CSI information.

CSI reporting module 4003, for reporting pattern according to the above-mentioned CSI for terminal configuration, reports above-mentioned subband CSI information in the predetermined moment that reports.

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

Due to the frequency domain granularity that one group of CSI reports pattern and system bandwidth can corresponding multiple subband CSI give the correct time, the frequency domain particle sizer operator band CSI information that the subband CSI that terminal can be selected according to network equipment gives the correct time also reports, and improves the flexibility of the frequency domain granularity configuration that subband CSI gives the correct time.

If carrying network equipment in the frequency domain granularity configuration information that above-mentioned subband CSI gives the correct time is the frequency domain granularity that the subband CQI of the subband CQI selection that terminal need report gives the correct time, with the frequency domain granularity that the subband PMI that the subband PMI that need report for terminal selects gives the correct time, then CSI information computational module 4002 comprises, subband PMI calculating sub module and subband CQI calculating sub module.

Wherein, subband PMI calculating sub module, for according to the frequency domain granularity that above-mentioned subband PMI gives the correct time, calculates subband PMI.

Subband CQI calculating sub module is used for, if there is common factor in the RB that the subband that the RB that the subband that subband CQI is corresponding comprises is corresponding with multiple subband PMI comprises, the multiple RB subsets supposing the subband that in downlink transfer, above-mentioned subband CQI is corresponding employ the subband PMI corresponding with RB subset respectively, according to the frequency domain granularity that above-mentioned subband CQI gives the correct time, with above-mentioned subband PMI, calculate subband CQI, the RB that the subband that the RB in above-mentioned RB subset is corresponding with subband PMI comprises exists and occurs simultaneously.

There is provided a CSI reporting device for the embodiment of the present invention, the specific works mode of its modules, with reference to the description of said method, can repeat no more here.

Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.

Claims

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, from current system bandwidth and report the subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration the set of frequency domain granularity in, for the frequency domain granularity that the subband CSI Information Selection subband CSI that described terminal need report gives the correct time, comprising:

According to the actual conditions of channel, from current system bandwidth and report the subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration the set of frequency domain granularity in, be the frequency domain granularity that the subband CSI Information Selection subband CSI that described terminal need report gives the correct time.

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

The frequency selectivity of channel, for reporting the capacity of the feedback channel of subband CSI information, the path loss of channel uplink power.

4. the method according to claims 1 to 3 any one, it is characterized in that, the CSI information that described terminal need report comprises: sub-band channel quality instruction CQI and subband pre-coding matrix instruction PMI, from current system bandwidth and report the subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration the set of frequency domain granularity in, for the frequency domain granularity that the subband CSI Information Selection subband CSI that described terminal need report gives the correct time, comprising:

The first corresponding relation of the frequency domain granularity set that pattern, system bandwidth and subband CSI give the correct time is reported according to CSI, selective system bandwidth sum is that the CSI of terminal configuration reports the frequency domain granularity that the subband CSI of the combination correspondence of pattern gives the correct time, as the frequency domain granularity that the subband CQI that the subband CQI that need report for described terminal selects gives the correct time;

And the second corresponding relation of the frequency domain granularity set that pattern, system bandwidth and subband CSI give the correct time is reported according to CSI, from current system bandwidth and report multiple subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration frequency domain granularity in, be the frequency domain granularity that subband PMI that described terminal need report selects subband PMI gives the correct time;

Described first corresponding relation comprises:

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

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

In described second corresponding relation, in the frequency domain granularity set that subband CSI gives the correct time, comprise the frequency domain granularity that multiple subband CSI gives the correct time.

5. the method according to claims 1 to 3 any one, is characterized in that, the CSI information that described terminal need report comprises: subband CQI and subband PMI; From current system bandwidth and report the subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration the set of frequency domain granularity in, be the frequency domain granularity that the subband CSI Information Selection subband CSI that described terminal need report gives the correct time, comprise:

The second corresponding relation of the frequency domain granularity set that pattern, system bandwidth and subband CSI give the correct time is reported according to CSI, from current system bandwidth and report multiple subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration frequency domain granularity in, be the frequency domain granularity that subband CQI that described terminal need report selects subband CSI gives the correct time;

And the first corresponding relation of the frequency domain granularity set that pattern, system bandwidth and subband CSI give the correct time is reported according to CSI, select current system bandwidth and report the frequency domain granularity that the subband CSI of the combination correspondence of pattern gives the correct time, the frequency domain granularity that the subband PMI as the subband PMI selection that need report for described terminal gives the correct time for the CSI of terminal configuration;

Described first corresponding relation comprises:

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

6. the method according to claims 1 to 3 any one, it is characterized in that, the CSI information that described terminal need report comprises: subband CQI and subband PMI, from current system bandwidth and report the subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration the set of frequency domain granularity in, for the frequency domain granularity that the subband CSI Information Selection subband CSI that described terminal need report gives the correct time, comprising:

The second corresponding relation of the frequency domain granularity that pattern, system bandwidth and subband CSI give the correct time is reported according to CSI, from current system bandwidth and report multiple subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration frequency domain granularity in, be the frequency domain granularity that subband CQI that described terminal need report selects subband CQI gives the correct time;

And the second corresponding relation of the frequency domain granularity that pattern, system bandwidth and subband CSI give the correct time is reported according to CSI, from current system bandwidth and report multiple subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration frequency domain granularity in, be the frequency domain granularity that subband PMI that described terminal need report selects subband PMI gives the correct time;

7. the method according to claims 1 to 3 any one, it is characterized in that, the CSI information that described terminal need report comprises: subband CQI and subband PMI, from current system bandwidth and report the subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration the set of frequency domain granularity in, for the frequency domain granularity that the subband CSI Information Selection subband CSI that described terminal need report gives the correct time, comprising:

The first corresponding relation of the frequency domain granularity that pattern, system bandwidth and subband CSI give the correct time is reported according to CSI, select current system bandwidth and report the frequency domain granularity that the subband CSI of the combination correspondence of pattern gives the correct time, the frequency domain granularity that the subband CQI as the subband CQI selection that need report for described terminal gives the correct time for the CSI of terminal configuration;

And the first corresponding relation of the frequency domain granularity that pattern, system bandwidth and subband CSI give the correct time is reported according to CSI, select current system bandwidth and report the frequency domain granularity that the subband CSI of the combination correspondence of pattern gives the correct time, the frequency domain granularity that the subband PMI as the subband PMI selection that need report for described terminal gives the correct time for the CSI of terminal configuration;

Described first corresponding relation comprises:

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

8. the method according to claims 1 to 3 any one, it is characterized in that, the CSI information that described terminal need report comprises: subband CQI, from current system bandwidth and report the subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration the set of frequency domain granularity in, for the frequency domain granularity that the subband CSI Information Selection subband CSI that described terminal need report gives the correct time, comprising:

The first corresponding relation of the frequency domain granularity that pattern, system bandwidth and subband CSI give the correct time is reported according to CSI, select current system bandwidth and report the frequency domain granularity that the subband CSI of the combination correspondence of pattern gives the correct time, the frequency domain granularity that the subband CQI as the sub-band channel quality instruction CQI selection that need report for described terminal gives the correct time for the CSI of terminal configuration;

Or,

Described 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, carrying described network equipment in the frequency domain granularity configuration information that described subband CSI gives the correct time is the frequency domain granularity of giving the correct time on the subband CQI that selects of sub-band channel quality instruction CQI that terminal need report, and the frequency domain granularity that the subband PMI of the subband pre-coding matrix instruction PMI selection that need report for terminal gives the correct time; According to the frequency domain granularity that described subband CSI gives the correct time, calculate subband CSI information, specifically comprise:

According to the frequency domain granularity that described subband PMI gives the correct time, calculate subband PMI;

If there is common factor in the RB that the subband that the Resource Block RB that the subband that subband CQI is corresponding comprises is corresponding with multiple subband PMI comprises, the multiple RB subsets supposing the subband that the CQI of subband described in downlink transfer is corresponding employ the subband PMI corresponding with RB subset respectively, according to the frequency domain granularity that described subband CQI gives the correct time, with described subband PMI, calculate subband CQI, the RB that the subband that the RB in described RB subset is corresponding with subband PMI comprises exists and occurs simultaneously.

11. 1 kinds of channel condition information CSI report control device, it is characterized in that, comprising:

12. devices according to claim 11, it is characterized in that, described frequency domain granularity configuration module specifically for, according to the actual conditions of channel, from current system bandwidth and report the subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration the set of frequency domain granularity in, be the frequency domain granularity that the subband CSI Information Selection subband CSI that described terminal need report gives the correct time.

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

14. devices according to claim 11 ~ 13 any one, it is characterized in that, the CSI information that described terminal need report comprises: sub-band channel quality instruction CQI and subband pre-coding matrix instruction PMI, described frequency domain granularity configuration module specifically for, pattern is reported according to CSI, first corresponding relation of the frequency domain granularity set that system bandwidth and subband CSI give the correct time, select current system bandwidth and report the frequency domain granularity that the subband CSI of the combination correspondence of pattern gives the correct time for the CSI of terminal configuration, as the frequency domain granularity that the subband CQI that the subband CQI that need report for described terminal selects gives the correct time, and the second corresponding relation of the frequency domain granularity set that pattern, system bandwidth and subband CSI give the correct time is reported according to CSI, from current system bandwidth and report multiple subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration frequency domain granularity in, be the frequency domain granularity that subband PMI that described terminal need report selects subband PMI gives the correct time,

Described first corresponding relation comprises:

15. devices according to claim 11 ~ 13 any one, it is characterized in that, the CSI information that described terminal need report comprises: subband CQI and subband PMI, described frequency domain granularity configuration module specifically for, the second corresponding relation of the frequency domain granularity set that pattern, system bandwidth and subband CSI give the correct time is reported according to CSI, from current system bandwidth and report multiple subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration frequency domain granularity in, be the frequency domain granularity that subband CQI that described terminal need report selects subband CQI gives the correct time; And the first corresponding relation of the frequency domain granularity set that pattern, system bandwidth and subband CSI give the correct time is reported according to CSI, select current system bandwidth and report the frequency domain granularity that the subband CSI of the combination correspondence of pattern gives the correct time, the frequency domain granularity that the subband PMI as the subband PMI selection that need report for described terminal gives the correct time for the CSI of terminal configuration;

Described first corresponding relation comprises:

16. devices according to claim 11 ~ 13 any one, it is characterized in that, the CSI information that described terminal need report comprises: subband CQI and subband PMI, described frequency domain granularity configuration module specifically for, the second corresponding relation of the frequency domain granularity that pattern, system bandwidth and subband CSI give the correct time is reported according to CSI, from current system bandwidth and report multiple subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration frequency domain granularity in, be the frequency domain granularity that subband CQI that described terminal need report selects subband CQI gives the correct time; And the second corresponding relation of the frequency domain granularity that pattern, system bandwidth and subband CSI give the correct time is reported according to CSI, from current system bandwidth and report multiple subband CSI of the combination correspondence of pattern to give the correct time for the CSI of terminal configuration frequency domain granularity in, be the frequency domain granularity that subband PMI that described terminal need report selects subband PMI gives the correct time;

17. devices according to claim 11 ~ 13 any one, it is characterized in that, the CSI information that described terminal need report comprises: subband CQI and subband PMI, described frequency domain granularity configuration module specifically for, the first corresponding relation of the frequency domain granularity that pattern, system bandwidth and subband CSI give the correct time is reported according to CSI, select current system bandwidth and report the frequency domain granularity that the subband CSI of the combination correspondence of pattern gives the correct time, the frequency domain granularity that the subband CQI as the subband CQI selection that need report for described terminal gives the correct time for the CSI of terminal configuration; And the first corresponding relation of the frequency domain granularity that pattern, system bandwidth and subband CSI give the correct time is reported according to CSI, select current system bandwidth and report the frequency domain granularity that the subband CSI of the combination correspondence of pattern gives the correct time, the frequency domain granularity that the subband PMI as the subband PMI selection that need report for described terminal gives the correct time for the CSI of terminal configuration;

Described first corresponding relation comprises:

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

Or,

Described first corresponding relation comprises:

19. 1 kinds of channel condition information CSI reporting devices, is characterized in that, comprising:

20. devices according to claim 19, it is characterized in that, carrying described network equipment in the frequency domain granularity configuration information that described subband CSI gives the correct time is the frequency domain granularity of giving the correct time on the subband CQI that selects of sub-band channel quality instruction CQI that terminal need report, and the frequency domain granularity that the subband PMI of the subband pre-coding matrix instruction PMI selection that need report for terminal gives the correct time; Described CSI information computational module comprises:

Subband PMI calculating sub module, for according to the frequency domain granularity that described subband PMI gives the correct time, calculates subband PMI;

Subband CQI calculating sub module, if there is common factor in the RB that the subband that the Resource Block RB comprised for the subband that subband CQI is corresponding is corresponding with multiple subband PMI comprises, the multiple RB subsets supposing the subband that the CQI of subband described in downlink transfer is corresponding employ the subband PMI corresponding with RB subset respectively, according to the frequency domain granularity that described subband CQI gives the correct time, with described subband PMI, calculate subband CQI, the RB that the subband that the RB in described RB subset is corresponding with subband PMI comprises exists and occurs simultaneously.