CN102281128B - Channel state information feedback triggering and feeding back method and device thereof - Google Patents

Channel state information feedback triggering and feeding back method and device thereof Download PDF

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Publication number
CN102281128B
CN102281128B CN201110226052.7A CN201110226052A CN102281128B CN 102281128 B CN102281128 B CN 102281128B CN 201110226052 A CN201110226052 A CN 201110226052A CN 102281128 B CN102281128 B CN 102281128B
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information
transfer point
under
aperiodic
feedback
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CN102281128A (en
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陈文洪
高秋彬
张然然
李辉
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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Priority to PCT/CN2012/079835 priority patent/WO2013020510A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027—Scheduling of signalling, e.g. occurrence thereof

Abstract

The embodiment of the invention discloses a CSI (Channel State Information) feedback triggering and feeding back method and a device thereof, relating to the technical field of wireless communication, and being used for implementing a scheme that a terminal executes non-periodic CSI feedback according to an expanded non-periodic CSI feedback mode capable of supporting COMP (Coordinated Multipoint) transmission. In the method, a base station determines the expanded non-periodic CSI feedback mode used for executing the non-periodic CSI feedback by the terminal, and notifies the terminal with the determined feedback mode through signaling; the base station triggers the terminal by the signaling to execute the non-periodic CSI feedback according to the expanded non-periodic CSI feedback mode; the terminal executes the non-periodic CSI feedback according to the expanded non-periodic CSI feedback mode. With the method and the device, the terminal can execute the scheme of the non-periodic CSI feedback according to the expanded non-periodic CSI feedback mode.

Description

Information feedback triggering and feedback method and equipment
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of information feedback triggering and feedback method and equipment.
Background technology
Multi-point cooperative transmission (Coordinated Multipoint Transmission/Reception, CoMP) technology refers to the cooperation between the multiple transfer points that separate on geographical position.In general, multiple transfer points are base stations of different districts, or multiple RRH of same cell base station control.By the cooperation transmission between multiple transfer points, can effectively reduce the interference between different transfer points, improve the particularly throughput of Cell Edge User of user.Descending multi-point cooperative transmission technical scheme is mainly divided into two classes: cooperative scheduling/wave beam forming (cooperative scheduling/beamforming, CS/CB) and Combined Treatment (Joint processing).
Cooperative scheduling is by the coordination of the time between transfer point, frequency and space resources, avoids or reduces interference each other.The interference of minizone is the principal element of restriction Cell Edge User terminal (UE) performance, and therefore cooperative scheduling, by reducing the interference of minizone, can improve the performance of cell edge UE.As shown in Figure 1, by the cooperative scheduling of three transfer points, three UE that may phase mutual interference have dispatched in mutually orthogonal resource, have effectively avoided the interference between transfer point.Collaborative wave beam forming is dispatched by the figuration direction to multiple users in cooperation cell, makes different districts user's beam direction mutually orthogonal, thereby reduces interference each other.Be similar to multi-user's Multiinputoutput (MU-MIMO) transmission of single community, collaborative wave beam forming mainly suppresses to process by the interference of transmitting terminal to be realized.Therefore, the interference of other users being transmitted in order to suppress this user's transmission, need to be at the descending channel information of base station end acquisition cooperation cell.
Combined Treatment scheme comprises the switching of dynamic transmission point and combines the two kinds of modes that send.During dynamic transmission point switches, base station can be switched dynamically to the transfer point of user's transmitted signal, thereby selects optimum transfer point transmission data at every turn.Switch in order to realize dynamic transfer point, base station need to obtain by feedback channel the channel information of multiple optional communities, or obtains the channel information of optimal transmission point.In associating delivery plan, multiple transfer points send data to UE simultaneously, receive signal to strengthen UE.As shown in Figure 2, three transfer points send data to a UE in identical resource, and UE receives the signal of multiple communities simultaneously.On the one hand, can promote from the useful signal stack of multiple communities the signal quality that UE receives, on the other hand, reduce the interference that UE is subject to, thereby improved systematic function.This scheme requires UE to feed back the channel information of multiple communities, even also wants the relative channel information of minizone, thus ensure multiple communities can combine dispatch, precoding and data transmission.
Downlink channel condition information (CSI) feedback mainly contains cycle CSI feedback and two kinds of modes of CSI feedback aperiodic, wherein the former is by Physical Uplink Control Channel (PUCCH) transmitting feedback information, and the latter is by Physical Uplink Shared Channel (PUSCH) transmitting feedback information.In existing long-term evolution upgrading (LTE-A) system, UE receives after the instruction that aperiodic, CSI triggered, and according to current downlink transfer pattern configurations and CSI feedback model configuration aperiodic, carries out the feedback of corresponding CSI in PUSCH.Following several different CSI feedback models aperiodic of system support at present.
In LTE-A system, UE estimates the channel information of base station to UE according to the channel information measurement reference signal (CSI-RS) of base station configuration, and calculate channel quality indication (CQI) information (CQI) and feed back to base station, the index that may also have pre-coding matrix (PMI) and the number of data streams (RI) together fed back with CQI.Base station can be triggered UE by Downlink Control Information (DCI) and be carried out reporting of aperiodic channel status information (CSI), UE receives after triggering command, by the RI/PMI/CQI of the specific feedback model feeding back downlink of Physical Uplink Shared Channel (PUSCH) basis.If now cell configuration multiple descending carriers, also need to be in triggering command the channel information of which carrier wave of indication feedback.
Realizing in process of the present invention, inventor finds to exist in prior art following technical problem:
CSI fed back several feedback models of supporting and can only feed back the channel information of single transfer point aperiodic, and base station can not obtain the channel information of multiple transfer points, thereby is difficult to carry out cooperative scheduling or cooperative transmission.
summary of the invention
The embodiment of the present invention provides a kind of information feedback triggering method and equipment, carries out the scheme of CSI feedback aperiodic for realizing base station triggers terminal according to CSI feedback model aperiodic that can support the expansion that COMP transmits.
A kind of channel condition information CSI feedback triggering method, the method comprises:
Base station determines that terminal carries out CSI feedback model aperiodic of the expansion that aperiodic, CSI feedback adopted, and by signaling, definite feedback model is notified to terminal; The feedback content corresponding to CSI feedback model aperiodic of this expansion comprises: one or more first in feedback aperiodic CSI measuring assembly set transfer point metrical informations one or more second in corresponding CSI and/or aperiodic CSI measuring assembly under current data flow amount RI and set transfer point metrical informations and setting CSI corresponding under RI; Be not included in the first setting transfer point metrical information in the second setting transfer point metrical information, or when this second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is not described setting RI, feeds back this second setting transfer point metrical information and setting CSI corresponding under RI;
Base station according to CSI feedback model aperiodic of described expansion, is carried out CSI feedback aperiodic by signaling triggering terminal.
A kind of base station, this base station comprises:
Notification unit, carries out CSI feedback model aperiodic of the expansion that aperiodic, CSI feedback adopted for definite terminal, and by signaling, definite feedback model is notified to terminal; The feedback content corresponding to CSI feedback model aperiodic of this expansion comprises: one or more first in feedback aperiodic CSI measuring assembly set transfer point metrical informations one or more second in corresponding CSI and/or aperiodic CSI measuring assembly under current data flow amount RI and set transfer point metrical informations and setting CSI corresponding under RI; Be not included in the first setting transfer point metrical information in the second setting transfer point metrical information, or when this second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is not described setting RI, feeds back this second setting transfer point metrical information and setting CSI corresponding under RI;
Trigger element, for passing through signaling triggering terminal according to CSI feedback model aperiodic of described expansion, carries out CSI feedback aperiodic.
In this programme, base station determines that terminal carries out CSI feedback model aperiodic of the expansion that aperiodic, CSI feedback adopted, and by signaling, definite feedback model is notified to terminal, the feedback content corresponding to CSI feedback model aperiodic of this expansion comprises: one or more first in feedback CSI measuring assembly aperiodic set transfer point metrical information at the lower corresponding CSI of current data flow amount (RI), and/or one or more second in aperiodic CSI measuring assembly set transfer point metrical informations and set CSI corresponding under RI, then pass through signaling triggering terminal according to CSI feedback model aperiodic of described expansion, carry out CSI feedback aperiodic, thereby realize base station triggers terminal and carried out according to the aperiodic CSI feedback model of expansion that can support COMP transmission the scheme of CSI feedback aperiodic.
The embodiment of the present invention provides a kind of channel state information feedback method and equipment, carries out the scheme of CSI feedback aperiodic for realizing terminal according to CSI feedback model aperiodic of the expansion that can support COMP transmission of base station instruction.
A kind of channel condition information CSI feedback method, the method comprises:
Terminal receive the expansion that adopts of carrying out CSI aperiodic feedback that base station sends aperiodic CSI feedback model notice; The feedback content corresponding to CSI feedback model aperiodic of this expansion comprises: one or more first in feedback aperiodic CSI measuring assembly set transfer point metrical informations one or more second in corresponding CSI and/or aperiodic CSI measuring assembly under current data flow amount RI and set transfer point metrical informations and setting CSI corresponding under RI;
Terminal receives after the triggering signaling of carrying out CSI aperiodic feedback of base station transmission, carries out CSI feedback aperiodic according to CSI feedback model aperiodic of notified expansion;
Terminal is not included in the first setting transfer point metrical information in the second setting transfer point metrical information, or when this second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is not described setting RI, feeds back this second setting transfer point metrical information and setting CSI corresponding under RI.
A kind of terminal, this terminal comprises:
Receiving element, for receive the expansion that adopts of carrying out CSI aperiodic feedback that base station sends aperiodic CSI feedback model notice; The feedback content corresponding to CSI feedback model aperiodic of this expansion comprises: one or more first in feedback aperiodic CSI measuring assembly set transfer point metrical informations one or more second in corresponding CSI and/or aperiodic CSI measuring assembly under current data flow amount RI and set transfer point metrical informations and setting CSI corresponding under RI;
Feedback unit, for after the triggering signaling of carrying out CSI aperiodic feedback that receives base station transmission, carries out CSI feedback aperiodic according to CSI feedback model aperiodic of notified expansion; Be not included in the first setting transfer point metrical information in the second setting transfer point metrical information, or when this second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is not described setting RI, feeds back this second setting transfer point metrical information and setting CSI corresponding under RI.
In this programme, terminal receive the expansion that adopts of carrying out CSI aperiodic feedback that base station sends aperiodic CSI feedback model notice; The feedback content corresponding to CSI feedback model aperiodic of this expansion comprises: one or more first in feedback aperiodic CSI measuring assembly set transfer point metrical informations one or more second in corresponding CSI and/or aperiodic CSI measuring assembly under current data flow amount RI and set transfer point metrical informations and setting CSI corresponding under RI; Then after the triggering signaling of carrying out CSI aperiodic feedback that receives base station transmission, CSI feedback model aperiodic according to notified expansion carries out CSI feedback aperiodic, thereby realized terminal and carry out according to CSI feedback model aperiodic of the expansion that can support COMP transmission of base station instruction the scheme of CSI feedback aperiodic.
brief description of the drawings
Fig. 1 is transfer point cooperative scheduling schematic diagram of the prior art;
Fig. 2 is that transfer point of the prior art is combined transmission schematic diagram;
The method flow schematic diagram that Fig. 3 provides for the embodiment of the present invention;
The other method schematic diagram that Fig. 4 provides for the embodiment of the present invention;
The device structure schematic diagram that Fig. 5 provides for the embodiment of the present invention;
Another device structure schematic diagram that Fig. 6 provides for the embodiment of the present invention.
embodiment
In the present invention, need base station in advance by high-level signaling etc. by aperiodic CSI measuring assembly configure to terminal, aperiodic, CSI measuring assembly was the set that comprises one or more transfer point metrical informations, each transfer point metrical information can comprise the configuration information of the downlink reference signal of one or more descending carrier, or the index of this configuration information, or the corresponding cell ID of transfer point (ID) information, the configuration information of this downlink reference signal can be the configuration information of CSI-RS etc.
Carry out the scheme of CSI feedback aperiodic according to CSI feedback model aperiodic that can support the expansion that COMP transmits in order to realize base station triggers terminal, the embodiment of the present invention provides a kind of CSI feedback triggering method.
Referring to Fig. 3, the CSI feedback triggering method that the embodiment of the present invention provides, comprises the following steps:
Step 30: base station determines that terminal carries out CSI feedback model aperiodic of the expansion that aperiodic, CSI feedback adopted, and by signaling, definite feedback model is notified to terminal; The feedback content corresponding to CSI feedback model aperiodic of this expansion comprises: one or more first in feedback aperiodic CSI measuring assembly set transfer point metrical informations one or more second in corresponding CSI and/or aperiodic CSI measuring assembly under current data flow amount RI and set transfer point metrical informations and setting CSI corresponding under RI;
Here, the CSI of certain transfer point metrical information correspondence under current RI, refers to the CSI measuring according to this transfer point metrical information under current RI corresponding to this transfer point metrical information.Certain transfer point metrical information is being set CSI corresponding under RI, refers to the CSI measuring according to this transfer point metrical information under RI setting.
Step 31: base station according to CSI feedback model aperiodic of described expansion, is carried out CSI feedback aperiodic by signaling triggering terminal.
Concrete, described setting RI is the fixing RI making an appointment with terminal, or a current RI that transfer point metrical information is corresponding.For example, setting RI can be 1.
If need to report RI under current transmission mode, current RI is the RI reporting for the corresponding current needs of transfer point metrical information; If do not need to report RI under current transmission mode, current RI is 1.
Below CSI feedback model aperiodic of expansion is illustrated:
Example 1, CSI feedback model aperiodic of described expansion is mode of extension 1-2; The feedback content that mode of extension 1-2 is corresponding comprises:
Set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the pre-coding matrix of S subband of the high level configuration under channel quality instruction (CQI) information and the current RI in a broadband under current RI and indicate (PMI) information; And/or,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, feedback is set the CQI information in a broadband under RI and is set the PMI information under RI respectively.
Concrete, the PMI information under described setting RI is: the PMI information of a subband, or the PMI information of multiple subbands, or the PMI in a broadband.
Preferably, for fear of feedback redundant information, be not included in the first setting transfer point metrical information in the second setting transfer point metrical information, or when this second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is not described setting RI, just for the PMI information under CQI information and the setting RI in a broadband under this second setting transfer point metrical information feedback setting RI.If the second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is described setting RI, not for this second setting transfer point metrical information feedback CSI.
Example 2, CSI feedback model aperiodic of described expansion is mode of extension 3-0; The feedback content that mode of extension 3-0 is corresponding comprises:
Set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the PMI information of the subband of a high-rise configuration under CQI information and the current RI in a broadband under current RI; And/or,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, feedback is set the CQI information in a broadband under RI and/or is set the CQI information of the subband of a high-rise configuration under RI respectively.
Preferably, for fear of feedback redundant information, be not included in the first setting transfer point metrical information in the second setting transfer point metrical information, or when this second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is not described setting RI, just feed back the CQI information of the subband of a high level configuration under CQI information and/or the setting RI that sets a broadband under RI for the second setting transfer point metrical information.If the second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is described setting RI, not for this second setting transfer point metrical information feedback CSI
Example 3, CSI feedback model aperiodic of described expansion is mode of extension 3-1; The feedback content that mode of extension 3-1 is corresponding comprises:
Set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively PMI and the CQI information of the subband of the high level configuration under CQI information and the current RI in a broadband under current RI; And/or,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, respectively feedback set a broadband under RI CQI information, set a broadband under RI PMI information, set the high level configuration under RI subband PMI and set at least one information in the CQI information of subband of the high level configuration under RI.
Preferably, for fear of feedback redundant information, be not included in the first setting transfer point metrical information in the second setting transfer point metrical information, or this second is set transfer point metrical information and is included in the first setting transfer point metrical information and current RI during for described settings RI, for this second set transfer point metrical information feedback set the CQI information in a broadband under RI, set a broadband under RI PMI information, set the high level configuration under RI subband PMI and set at least one information in the CQI information of the subband that the high level under RI configures.If the second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is described setting RI, not for this second setting transfer point metrical information feedback CSI.
Example 4, CSI feedback model aperiodic of described expansion is mode of extension 2-0; The feedback content that mode of extension 2-0 is corresponding comprises:
Set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the CQI information of M the subband that the user under CQI information and the current RI in a broadband under current RI selects; And/or,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, feedback is set the CQI information in a broadband under RI and/or is set the CQI information of M the subband that the user under RI selects respectively.
Preferably, for fear of feedback redundant information, be not included in the first setting transfer point metrical information in the second setting transfer point metrical information, or when this second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is not described setting RI, feed back the CQI information of M subband of the user's selection under CQI information and/or the setting RI that sets a broadband under RI for this second setting transfer point metrical information.If the second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is described setting RI, not for this second setting transfer point metrical information feedback CSI.
Example 5, CSI feedback model aperiodic of described expansion is mode of extension 2-2; The feedback content that mode of extension 2-2 is corresponding comprises:
Set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the PMI information of the subband that the high level under PMI and CQI information and the current RI of M the subband that the user under CQI information, the current RI in a broadband under current RI selects configures; And/or,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, respectively feedback set a broadband under RI CQI information, set broadband P MI information under RI, set the subband of the high level configuration under RI PMI, set the subband of the high level configuration under RI CQI information, set the PMI of M the subband that the user under RI selects and set at least one information in the CQI information of M subband of the user's selection under RI.
Preferably, for fear of feedback redundant information, be not included in the first setting transfer point metrical information in the second setting transfer point metrical information, or when this second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is not described setting RI, set the CQI information in a broadband under RI for this second setting transfer point metrical information feedback, set the broadband P MI information under RI, set the PMI of the subband of the high level configuration under RI, set the CQI information of the subband of the high level configuration under RI, at least one information in the CQI information of M the subband that the user under the PMI of M the subband that the user under setting RI selects and setting RI selects.If the second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is described setting RI, not for this second setting transfer point metrical information feedback CSI.
In above-mentioned 5 examples, described one or more first sets transfer point metrical informations is: the main transfer point metrical information that base station instruction or terminal are determined, or each transfer point metrical information in the optional set of main transfer point metrical information of base station instruction.
Preferably, in above-mentioned 5 examples, feedback content can also comprise: the main transfer point metrical information that feedback terminal is recommended or the index information of this metrical information.
Preferably, in above-mentioned 5 examples, feedback content can also comprise: other all or part of transfer point metrical informations in feedback CSI measuring assembly aperiodic except reference transmission point measurement information are with respect to phase place and/or the amplitude information of reference transmission point measurement information.Reference transmission point measurement information can preset according to actual needs, for example, can be main transfer point metrical information.
The scheme of carrying out CSI feedback aperiodic in order to realize terminal according to CSI feedback model aperiodic of the expansion that can support COMP transmission of base station instruction, the embodiment of the present invention provides a kind of CSI feedback method.
Referring to Fig. 4, the CSI feedback method that the embodiment of the present invention provides, comprises the following steps:
Step 40: terminal receive the expansion that adopts of carrying out CSI aperiodic feedback that base station sends aperiodic CSI feedback model notice; The feedback content corresponding to CSI feedback model aperiodic of this expansion comprises: one or more first in feedback aperiodic CSI measuring assembly set transfer point metrical informations one or more second in corresponding CSI and/or aperiodic CSI measuring assembly under current data flow amount RI and set transfer point metrical informations and setting CSI corresponding under RI;
Step 41: terminal receives after the triggering signaling of carrying out CSI aperiodic feedback of base station transmission, carries out CSI feedback aperiodic according to CSI feedback model aperiodic of notified expansion.
Concrete, described setting RI is the fixing RI making an appointment with base station, or a current RI that transfer point metrical information is corresponding.
If need to report RI under current transmission mode, current RI is the RI reporting for the corresponding current needs of transfer point metrical information; If do not need to report RI under current transmission mode, current RI is 1.
Terminal is carried out to CSI feedback aperiodic according to CSI feedback model aperiodic of expansion below, is illustrated:
Example 1, when the aperiodic of described expansion, CSI feedback model was mode of extension 1-2, being achieved as follows of step 41:
Terminal pins is set transfer point metrical informations to one or more first in aperiodic CSI measuring assembly, feeds back respectively the pre-coding matrix of S subband of the high level configuration under channel quality indicator CQI information and the current RI in a broadband under current RI and indicates PMI information; And/or,
Terminal pins is set transfer point metrical informations to one or more second in aperiodic CSI measuring assembly, and feedback is set the CQI information in a broadband under RI and set the PMI information under RI respectively.
Concrete, the PMI information under described setting RI is: the PMI information of a subband, or the PMI information of multiple subbands, or the PMI in a broadband.
Preferably, for fear of feedback redundant information, terminal is not included in the first setting transfer point metrical information in the second setting transfer point metrical information, or this second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI sets lower time of RI, for the PMI information under CQI information and the setting RI in a broadband under this second setting transfer point metrical information feedback setting RI.If the second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI sets under RI, not for this second setting transfer point metrical information feedback CSI.
Example 2, when the aperiodic of described expansion, CSI feedback model was mode of extension 3-0, being achieved as follows of step 41:
Terminal pins is set transfer point metrical informations to one or more first in aperiodic CSI measuring assembly, feeds back respectively the PMI information of the subband of a high-rise configuration under CQI information and the current RI in a broadband under current RI; And/or,
Terminal pins is set transfer point metrical informations to one or more second in aperiodic CSI measuring assembly, and feedback is set the CQI information in a broadband under RI and/or set the CQI information of the subband of a high-rise configuration under RI respectively.
Preferably, for fear of feedback redundant information, terminal is not included in the first setting transfer point metrical information in the second setting transfer point metrical information, or this second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is not while setting RI, feeds back the CQI information of the subband of a high level configuration under CQI information and/or the setting RI that sets a broadband under RI for the second setting transfer point metrical information.If the second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is setting RI, not for this second setting transfer point metrical information feedback CSI.
Example 3, when the aperiodic of described expansion, CSI feedback model was mode of extension 3-1, being achieved as follows of step 41:
Terminal pins is set transfer point metrical informations to one or more first in aperiodic CSI measuring assembly, feeds back respectively PMI and the CQI information of the subband of the high level configuration under CQI information and the current RI in a broadband under current RI; And/or,
Terminal pins is set transfer point metrical informations to one or more second in aperiodic CSI measuring assembly, respectively feedback set a broadband under RI CQI information, set a broadband under RI PMI information, set the high level configuration under RI subband PMI and set at least one information in the CQI information of subband of the high level configuration under RI.
Preferably, for fear of feedback redundant information, terminal is not included in the first setting transfer point metrical information in the second setting transfer point metrical information, or this second set transfer point metrical information be included in the first setting transfer point metrical information and current RI when setting RI, for this second set transfer point metrical information feedback set the CQI information in a broadband under RI, set a broadband under RI PMI information, set the high level configuration under RI subband PMI and set at least one information in the CQI information of subband of the high level configuration under RI.If the second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is setting RI, not for this second setting transfer point metrical information feedback CSI.
Example 4, when the aperiodic of described expansion, CSI feedback model was mode of extension 2-0, being achieved as follows of step 41:
Terminal pins is set transfer point metrical informations to one or more first in aperiodic CSI measuring assembly, feeds back respectively the CQI information of M the subband that the user under CQI information and the current RI in a broadband under current RI selects; And/or,
Terminal pins is set transfer point metrical informations to one or more second in aperiodic CSI measuring assembly, and feedback is set the CQI information in a broadband under RI and/or set the CQI information of M the subband that the user under RI selects respectively.
Preferably, for fear of feedback redundant information, terminal is not included in the first setting transfer point metrical information in the second setting transfer point metrical information, or this second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is not while setting RI, the CQI information of M the subband of selecting for the user under CQI information and/or the setting RI in a broadband under this second setting transfer point metrical information feedback setting RI.If the second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is setting RI, not for this second setting transfer point metrical information feedback CSI.
Example 5, when the aperiodic of described expansion, CSI feedback model was mode of extension 2-2, being achieved as follows of step 41:
Terminal pins is set transfer point metrical informations to one or more first in aperiodic CSI measuring assembly, feeds back respectively the PMI information of the subband that the high level under PMI and CQI information and the current RI of M the subband that the user under CQI information, the current RI in a broadband under current RI selects configures; And/or,
Terminal pins is set transfer point metrical informations to one or more second in aperiodic CSI measuring assembly, respectively feedback set a broadband under RI CQI information, set broadband P MI information under RI, set the subband of the high level configuration under RI PMI, set the subband of the high level configuration under RI CQI information, set the PMI of M the subband that the user under RI selects and set at least one information in the CQI information of M subband of the user's selection under RI.
Preferably, for fear of feedback redundant information, terminal is not included in the first setting transfer point metrical information in the second setting transfer point metrical information, or this second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is not while setting RI, set the CQI information in a broadband under RI for this second setting transfer point metrical information feedback, set the broadband P MI information under RI, set the PMI of the subband of the high level configuration under RI, set the CQI information of the subband of the high level configuration under RI, at least one information in the CQI information of M the subband that the user under the PMI of M the subband that the user under setting RI selects and setting RI selects.If the second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is setting RI, not for this second setting transfer point metrical information feedback CSI.
In above-mentioned 5 examples, described one or more first sets transfer point metrical informations is: the main transfer point metrical information that base station instruction or terminal are determined, or each main transfer point metrical information in the optional set of main transfer point metrical information of base station instruction.
Preferably, in above-mentioned 5 examples, the feedback content in step 41 can also comprise: the main transfer point metrical information that feedback terminal is recommended or the index information of this metrical information.
Preferably, in above-mentioned 5 examples, the feedback content in step 41 can also comprise: other all or part of transfer point metrical informations in feedback CSI measuring assembly aperiodic except reference transmission point measurement information are with respect to phase place and/or the amplitude information of reference transmission point measurement information.Reference transmission point measurement information can preset according to actual needs, for example, can be main transfer point metrical information.
Below to specific embodiment, the present invention will be described:
Embodiment mono-:
The feedback model 1-2 of expansion:
Or
Or
Embodiment bis-:
The feedback model 3-0 of expansion:
Or
Embodiment tri-:
The feedback model 3-1 of expansion:
Or
Or
Embodiment tetra-:
The feedback model 2-0 of expansion:
Or
Embodiment five:
The feedback model 2-2 of expansion:
Or
Referring to Fig. 5, the embodiment of the present invention also provides a kind of base station, and this base station comprises:
Notification unit 50, carries out CSI feedback model aperiodic of the expansion that aperiodic, CSI feedback adopted for definite terminal, and by signaling, definite feedback model is notified to terminal; The feedback content corresponding to CSI feedback model aperiodic of this expansion comprises: one or more first in feedback aperiodic CSI measuring assembly set transfer point metrical informations one or more second in corresponding CSI and/or aperiodic CSI measuring assembly under current data flow amount RI and set transfer point metrical informations and setting CSI corresponding under RI;
Trigger element 51, for passing through signaling triggering terminal according to CSI feedback model aperiodic of described expansion, carries out CSI feedback aperiodic.
Described setting RI is the fixing RI making an appointment with terminal, or a current RI that transfer point metrical information is corresponding.
If need to report RI under current transmission mode, current RI is the RI reporting for the corresponding current needs of transfer point metrical information; If do not need to report RI under current transmission mode, current RI is 1.
If need to report RI under current transmission mode, current RI is the RI reporting for the corresponding current needs of transfer point metrical information; If do not need to report RI under current transmission mode, current RI is 1.
CSI feedback model aperiodic of described expansion is mode of extension 1-2; The feedback content that mode of extension 1-2 is corresponding comprises:
Set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the pre-coding matrix of S subband of the high level configuration under channel quality indicator CQI information and the current RI in a broadband under current RI and indicate PMI information; And/or,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, feedback is set the CQI information in a broadband under RI and is set the PMI information under RI respectively.
PMI information under described setting RI is:
The PMI information of a subband, or the PMI information of multiple subbands, or the PMI in a broadband.
CSI feedback model aperiodic of described expansion is mode of extension 3-0; The feedback content that mode of extension 3-0 is corresponding comprises:
Set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the PMI information of the subband of a high-rise configuration under CQI information and the current RI in a broadband under current RI; And/or,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, feedback is set the CQI information in a broadband under RI and/or is set the CQI information of the subband of a high-rise configuration under RI respectively.
CSI feedback model aperiodic of described expansion is mode of extension 3-1; The feedback content that mode of extension 3-1 is corresponding comprises:
Set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively PMI and the CQI information of the subband of the high level configuration under CQI information and the current RI in a broadband under current RI; And/or,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, respectively feedback set a broadband under RI CQI information, set a broadband under RI PMI information, set the high level configuration under RI subband PMI and set at least one information in the CQI information of subband of the high level configuration under RI.
CSI feedback model aperiodic of described expansion is mode of extension 2-0; The feedback content that mode of extension 2-0 is corresponding comprises:
Set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the CQI information of M the subband that the user under CQI information and the current RI in a broadband under current RI selects; And/or,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, feedback is set the CQI information in a broadband under RI and/or is set the CQI information of M the subband that the user under RI selects respectively.
CSI feedback model aperiodic of described expansion is mode of extension 2-2; The feedback content that mode of extension 2-2 is corresponding comprises:
Set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the PMI information of the subband that the high level under PMI and CQI information and the current RI of M the subband that the user under CQI information, the current RI in a broadband under current RI selects configures; And/or,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, respectively feedback set a broadband under RI CQI information, set broadband P MI information under RI, set the subband of the high level configuration under RI PMI, set the subband of the high level configuration under RI CQI information, set the PMI of M the subband that the user under RI selects and set at least one information in the CQI information of M subband of the user's selection under RI.
Be not included in the first setting transfer point metrical information in the second setting transfer point metrical information, or when this second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is not described setting RI, feeds back this second setting transfer point metrical information and setting CSI corresponding under RI.
Feedback content also comprises: the main transfer point metrical information that feedback is recommended or the index information of this metrical information.
Feedback content also comprises:
Other all or part of transfer point metrical informations in feedback CSI measuring assembly aperiodic except reference transmission point measurement information are with respect to phase place and/or the amplitude information of reference transmission point measurement information.
Referring to Fig. 6, the embodiment of the present invention also provides a kind of terminal, and this terminal comprises:
Receiving element 60, for receive the expansion that adopts of carrying out CSI aperiodic feedback that base station sends aperiodic CSI feedback model notice; The feedback content corresponding to CSI feedback model aperiodic of this expansion comprises: one or more first in feedback aperiodic CSI measuring assembly set transfer point metrical informations one or more second in corresponding CSI and/or aperiodic CSI measuring assembly under current data flow amount RI and set transfer point metrical informations and setting CSI corresponding under RI;
Feedback unit 61, for after the triggering signaling of carrying out CSI aperiodic feedback that receives base station transmission, carries out CSI feedback aperiodic according to CSI feedback model aperiodic of notified expansion.
Described setting RI is the fixing RI making an appointment with base station, or a current RI that transfer point metrical information is corresponding.
If need to report RI under current transmission mode, current RI is the RI reporting for the corresponding current needs of transfer point metrical information; If do not need to report RI under current transmission mode, current RI is 1.
Described feedback unit 61 for:
In the time that the aperiodic of described expansion, CSI feedback model was mode of extension 1-2, set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the pre-coding matrix of S subband of the high level configuration under channel quality indicator CQI information and the current RI in a broadband under current RI and indicate PMI information; And/or,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, feedback is set the CQI information in a broadband under RI and is set the PMI information under RI respectively.
PMI information under described setting RI is: the PMI information of a subband, or the PMI information of multiple subbands, or the PMI in a broadband.
Described feedback unit 61 for:
In the time that the aperiodic of described expansion, CSI feedback model was mode of extension 3-0, set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the PMI information of the subband of a high-rise configuration under CQI information and the current RI in a broadband under current RI; And/or,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, feedback is set the CQI information in a broadband under RI and/or is set the CQI information of the subband of a high-rise configuration under RI respectively.
Described feedback unit 61 for:
In the time that the aperiodic of described expansion, CSI feedback model was mode of extension 3-1, set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively PMI and the CQI information of the subband of the high level configuration under CQI information and the current RI in a broadband under current RI; And/or,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, respectively feedback set a broadband under RI CQI information, set a broadband under RI PMI information, set the high level configuration under RI subband PMI and set at least one information in the CQI information of subband of the high level configuration under RI.
Described feedback unit 61 for:
In the time that the aperiodic of described expansion, CSI feedback model was mode of extension 2-0, set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the CQI information of M the subband that the user under CQI information and the current RI in a broadband under current RI selects; And/or,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, feedback is set the CQI information in a broadband under RI and/or is set the CQI information of M the subband that the user under RI selects respectively.
Described feedback unit 61 for:
In the time that the aperiodic of described expansion, CSI feedback model was mode of extension 2-2, set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the PMI information of the subband that the high level under PMI and CQI information and the current RI of M the subband that the user under CQI information, the current RI in a broadband under current RI selects configures; And/or,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, respectively feedback set a broadband under RI CQI information, set broadband P MI information under RI, set the subband of the high level configuration under RI PMI, set the subband of the high level configuration under RI CQI information, set the PMI of M the subband that the user under RI selects and set at least one information in the CQI information of M subband of the user's selection under RI.
Described feedback unit 61 for:
Be not included in the first setting transfer point metrical information in the second setting transfer point metrical information, or when this second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is not described setting RI, feeds back this second setting transfer point metrical information and setting CSI corresponding under RI.
Described feedback unit 61 also for:
The main transfer point metrical information that feedback is recommended or the index information of this metrical information.
Described feedback unit 61 also for:
Other all or part of transfer point metrical informations in feedback CSI measuring assembly aperiodic except reference transmission point measurement information are with respect to phase place and/or the amplitude information of reference transmission point measurement information.
To sum up, in the scheme that the embodiment of the present invention provides, base station determines that terminal carries out CSI feedback model aperiodic of the expansion that aperiodic, CSI feedback adopted, the feedback content corresponding to CSI feedback model aperiodic of this expansion comprises: the one or more transfer point metrical informations in feedback CSI measuring assembly aperiodic are at the lower corresponding CSI of current data flow amount (RI), and one or more transfer point metrical informations in aperiodic CSI measuring assembly are being set CSI corresponding under RI, then pass through signaling triggering terminal according to CSI feedback model aperiodic of described expansion, carry out CSI feedback aperiodic, thereby realize base station triggers terminal and carried out according to the aperiodic CSI feedback model of expansion that can support COMP transmission the scheme of CSI feedback aperiodic.
CSI feedback model aperiodic according to expansion that terminal reception base station sends carries out the triggering signaling of CSI feedback aperiodic; The feedback content corresponding to CSI feedback model aperiodic of this expansion comprises: the one or more transfer point metrical informations in corresponding CSI and aperiodic CSI measuring assembly under current data flow amount RI of the one or more transfer point metrical informations in feedback aperiodic CSI measuring assembly are being set CSI corresponding under RI; Then carry out CSI feedback aperiodic according to CSI feedback model aperiodic of described expansion, thereby realized terminal and carry out according to CSI feedback model aperiodic of the expansion that can support COMP transmission of base station instruction the scheme of CSI feedback aperiodic.
The present invention can support that unicast and CoMP transmit the non-periodic feedback of required CSI simultaneously; And can support various CoMP transmission modes.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction that makes to carry out by the processor of computer or other programmable data processing device produces the device for realizing the function of specifying at flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and amendment to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.

Claims (48)

1. a channel condition information CSI feedback triggering method, is characterized in that, the method comprises:
Base station determines that terminal carries out CSI feedback model aperiodic of the expansion that aperiodic, CSI feedback adopted, and by signaling, definite feedback model is notified to terminal; The feedback content corresponding to CSI feedback model aperiodic of this expansion comprises: one or more first in feedback aperiodic CSI measuring assembly set transfer point metrical informations one or more second in corresponding CSI and aperiodic CSI measuring assembly under current data flow amount RI and set transfer point metrical informations and setting CSI corresponding under RI; Wherein, described one or more first sets transfer point metrical information comprises: a main transfer point metrical information, or the each main transfer point metrical information in the optional set of main transfer point metrical information, described one or more second sets transfer point metrical information comprises: the each transfer point metrical information in measuring assembly, or other transfer point metrical information except main transfer point metrical information in measuring assembly;
Base station according to CSI feedback model aperiodic of described expansion, is carried out CSI feedback aperiodic by signaling triggering terminal.
2. the method for claim 1, is characterized in that, described setting RI is the fixing RI making an appointment with terminal, or a current RI that transfer point metrical information is corresponding.
3. method as claimed in claim 1 or 2, is characterized in that, if need to report RI under current transmission mode, current RI is the RI reporting for the corresponding current needs of transfer point metrical information; If do not need to report RI under current transmission mode, current RI is 1.
4. the method for claim 1, is characterized in that, CSI feedback model aperiodic of described expansion is mode of extension 1-2; The feedback content that mode of extension 1-2 is corresponding comprises:
Set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the pre-coding matrix of S subband of the high level configuration under channel quality indicator CQI information and the current RI in a broadband under current RI and indicate PMI information; With,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, feedback is set the CQI information in a broadband under RI and is set the PMI information under RI respectively.
5. method as claimed in claim 4, is characterized in that, the PMI information under described setting RI is:
The PMI information of a subband, or the PMI information of multiple subbands, or the PMI in a broadband.
6. the method for claim 1, is characterized in that, CSI feedback model aperiodic of described expansion is mode of extension 3-0; The feedback content that mode of extension 3-0 is corresponding comprises:
Set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the PMI information of the subband of a high-rise configuration under CQI information and the current RI in a broadband under current RI; With,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, feedback is set the CQI information in a broadband under RI and/or is set the CQI information of the subband of a high-rise configuration under RI respectively.
7. the method for claim 1, is characterized in that, CSI feedback model aperiodic of described expansion is mode of extension 3-1; The feedback content that mode of extension 3-1 is corresponding comprises:
Set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively PMI and the CQI information of the subband of the high level configuration under CQI information and the current RI in a broadband under current RI; With,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, respectively feedback set a broadband under RI CQI information, set a broadband under RI PMI information, set the high level configuration under RI subband PMI and set at least one information in the CQI information of subband of the high level configuration under RI.
8. the method for claim 1, is characterized in that, CSI feedback model aperiodic of described expansion is mode of extension 2-0; The feedback content that mode of extension 2-0 is corresponding comprises:
Set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the CQI information of M the subband that the user under CQI information and the current RI in a broadband under current RI selects; With,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, feedback is set the CQI information in a broadband under RI and/or is set the CQI information of M the subband that the user under RI selects respectively.
9. the method for claim 1, is characterized in that, CSI feedback model aperiodic of described expansion is mode of extension 2-2; The feedback content that mode of extension 2-2 is corresponding comprises:
Set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the PMI information of the subband that the high level under PMI and CQI information and the current RI of M the subband that the user under CQI information, the current RI in a broadband under current RI selects configures; With,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, respectively feedback set a broadband under RI CQI information, set broadband P MI information under RI, set the subband of the high level configuration under RI PMI, set the subband of the high level configuration under RI CQI information, set the PMI of M the subband that the user under RI selects and set at least one information in the CQI information of M subband of the user's selection under RI.
10. the method for claim 1, it is characterized in that, be not included in the first setting transfer point metrical information in the second setting transfer point metrical information, or when this second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is not described setting RI, feeds back this second setting transfer point metrical information and setting CSI corresponding under RI.
11. as the method as described in arbitrary in claim 4-9, it is characterized in that, feedback content also comprises:
The main transfer point metrical information that feedback is recommended or the index information of this metrical information.
12. as the method as described in arbitrary in claim 4-9, it is characterized in that, feedback content also comprises:
Other all or part of transfer point metrical informations in feedback CSI measuring assembly aperiodic except reference transmission point measurement information are with respect to phase place and/or the amplitude information of reference transmission point measurement information.
13. 1 kinds of channel condition information CSI feedback methods, is characterized in that, the method comprises:
Terminal receive the expansion that adopts of carrying out CSI aperiodic feedback that base station sends aperiodic CSI feedback model notice; The feedback content corresponding to CSI feedback model aperiodic of this expansion comprises: one or more first in feedback aperiodic CSI measuring assembly set transfer point metrical informations one or more second in corresponding CSI and aperiodic CSI measuring assembly under current data flow amount RI and set transfer point metrical informations and setting CSI corresponding under RI; Wherein, described one or more first sets transfer point metrical information comprises: a main transfer point metrical information, or the each main transfer point metrical information in the optional set of main transfer point metrical information, described one or more second sets transfer point metrical information comprises: the each transfer point metrical information in measuring assembly, or other transfer point metrical information except main transfer point metrical information in measuring assembly;
Terminal receives after the triggering signaling of carrying out CSI aperiodic feedback of base station transmission, carries out CSI feedback aperiodic according to CSI feedback model aperiodic of notified expansion.
14. methods as claimed in claim 13, is characterized in that, described setting RI is the fixing RI making an appointment with base station, or a current RI that transfer point metrical information is corresponding.
15. methods as described in claim 13 or 14, is characterized in that, if need to report RI under current transmission mode, current RI is the RI reporting for the corresponding current needs of transfer point metrical information; If do not need to report RI under current transmission mode, current RI is 1.
16. methods as claimed in claim 13, is characterized in that, CSI feedback model aperiodic of described expansion is mode of extension 1-2; Described CSI feedback model aperiodic according to notified expansion carries out aperiodic CSI feedback and comprises:
Terminal pins is set transfer point metrical informations to one or more first in aperiodic CSI measuring assembly, feeds back respectively the pre-coding matrix of S subband of the high level configuration under channel quality indicator CQI information and the current RI in a broadband under current RI and indicates PMI information; With,
Terminal pins is set transfer point metrical informations to one or more second in aperiodic CSI measuring assembly, and feedback is set the CQI information in a broadband under RI and set the PMI information under RI respectively.
17. methods as claimed in claim 16, is characterized in that, the PMI information under described setting RI is: the PMI information of a subband, or the PMI information of multiple subbands, or the PMI in a broadband.
18. methods as claimed in claim 13, is characterized in that, CSI feedback model aperiodic of described expansion is mode of extension 3-0; Described CSI feedback model aperiodic according to notified expansion carries out aperiodic CSI feedback and comprises:
Terminal pins is set transfer point metrical informations to one or more first in aperiodic CSI measuring assembly, feeds back respectively the PMI information of the subband of a high-rise configuration under CQI information and the current RI in a broadband under current RI; With,
Terminal pins is set transfer point metrical informations to one or more second in aperiodic CSI measuring assembly, and feedback is set the CQI information in a broadband under RI and/or set the CQI information of the subband of a high-rise configuration under RI respectively.
19. methods as claimed in claim 13, is characterized in that, CSI feedback model aperiodic of described expansion is mode of extension 3-1; Described CSI feedback model aperiodic according to notified expansion carries out aperiodic CSI feedback and comprises:
Terminal pins is set transfer point metrical informations to one or more first in aperiodic CSI measuring assembly, feeds back respectively PMI and the CQI information of the subband of the high level configuration under CQI information and the current RI in a broadband under current RI; With,
Terminal pins is set transfer point metrical informations to one or more second in aperiodic CSI measuring assembly, respectively feedback set a broadband under RI CQI information, set a broadband under RI PMI information, set the high level configuration under RI subband PMI and set at least one information in the CQI information of subband of the high level configuration under RI.
20. methods as claimed in claim 13, is characterized in that, CSI feedback model aperiodic of described expansion is mode of extension 2-0; Described CSI feedback model aperiodic according to notified expansion carries out aperiodic CSI feedback and comprises:
Terminal pins is set transfer point metrical informations to one or more first in aperiodic CSI measuring assembly, feeds back respectively the CQI information of M the subband that the user under CQI information and the current RI in a broadband under current RI selects; With,
Terminal pins is set transfer point metrical informations to one or more second in aperiodic CSI measuring assembly, and feedback is set the CQI information in a broadband under RI and/or set the CQI information of M the subband that the user under RI selects respectively.
21. methods as claimed in claim 13, is characterized in that, CSI feedback model aperiodic of described expansion is mode of extension 2-2; Described CSI feedback model aperiodic according to notified expansion carries out aperiodic CSI feedback and comprises:
Terminal pins is set transfer point metrical informations to one or more first in aperiodic CSI measuring assembly, feeds back respectively the PMI information of the subband that the high level under PMI and CQI information and the current RI of M the subband that the user under CQI information, the current RI in a broadband under current RI selects configures; With,
Terminal pins is set transfer point metrical informations to one or more second in aperiodic CSI measuring assembly, respectively feedback set a broadband under RI CQI information, set broadband P MI information under RI, set the subband of the high level configuration under RI PMI, set the subband of the high level configuration under RI CQI information, set the PMI of M the subband that the user under RI selects and set at least one information in the CQI information of M subband of the user's selection under RI.
22. methods as claimed in claim 13, it is characterized in that, terminal is not included in the first setting transfer point metrical information in the second setting transfer point metrical information, or when this second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is not described setting RI, feeds back this second setting transfer point metrical information and setting CSI corresponding under RI.
23. as the method as described in arbitrary in claim 16-21, it is characterized in that, described CSI feedback model aperiodic according to notified expansion carries out aperiodic CSI feedback and also comprises:
The main transfer point metrical information that feedback is recommended or the index information of this metrical information.
24. as the method as described in arbitrary in claim 16-21, it is characterized in that, described CSI feedback model aperiodic according to notified expansion carries out aperiodic CSI feedback and also comprises:
Other all or part of transfer point metrical informations in feedback CSI measuring assembly aperiodic except reference transmission point measurement information are with respect to phase place and/or the amplitude information of reference transmission point measurement information.
25. 1 kinds of base stations, is characterized in that, this base station comprises:
Notification unit, carries out CSI feedback model aperiodic of the expansion that aperiodic, CSI feedback adopted for definite terminal, and by signaling, definite feedback model is notified to terminal; The feedback content corresponding to CSI feedback model aperiodic of this expansion comprises: one or more first in feedback aperiodic CSI measuring assembly set transfer point metrical informations one or more second in corresponding CSI and aperiodic CSI measuring assembly under current data flow amount RI and set transfer point metrical informations and setting CSI corresponding under RI; Wherein, described one or more first sets transfer point metrical information comprises: a main transfer point metrical information, or the each main transfer point metrical information in the optional set of main transfer point metrical information, described one or more second sets transfer point metrical information comprises: the each transfer point metrical information in measuring assembly, or other transfer point metrical information except main transfer point metrical information in measuring assembly;
Trigger element, for passing through signaling triggering terminal according to CSI feedback model aperiodic of described expansion, carries out CSI feedback aperiodic.
26. base stations as claimed in claim 25, is characterized in that, described setting RI is the fixing RI making an appointment with terminal, or a current RI that transfer point metrical information is corresponding.
27. base stations as described in claim 25 or 26, is characterized in that, if need to report RI under current transmission mode, current RI is the RI reporting for the corresponding current needs of transfer point metrical information; If do not need to report RI under current transmission mode, current RI is 1.
28. base stations as claimed in claim 25, is characterized in that, CSI feedback model aperiodic of described expansion is mode of extension 1-2; The feedback content that mode of extension 1-2 is corresponding comprises:
Set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the pre-coding matrix of S subband of the high level configuration under channel quality indicator CQI information and the current RI in a broadband under current RI and indicate PMI information; With,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, feedback is set the CQI information in a broadband under RI and is set the PMI information under RI respectively.
29. base stations as claimed in claim 28, is characterized in that, the PMI information under described setting RI is:
The PMI information of a subband, or the PMI information of multiple subbands, or the PMI in a broadband.
30. base stations as claimed in claim 25, is characterized in that, CSI feedback model aperiodic of described expansion is mode of extension 3-0; The feedback content that mode of extension 3-0 is corresponding comprises:
Set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the PMI information of the subband of a high-rise configuration under CQI information and the current RI in a broadband under current RI; With,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, feedback is set the CQI information in a broadband under RI and/or is set the CQI information of the subband of a high-rise configuration under RI respectively.
31. base stations as claimed in claim 25, is characterized in that, CSI feedback model aperiodic of described expansion is mode of extension 3-1; The feedback content that mode of extension 3-1 is corresponding comprises:
Set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively PMI and the CQI information of the subband of the high level configuration under CQI information and the current RI in a broadband under current RI; With,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, respectively feedback set a broadband under RI CQI information, set a broadband under RI PMI information, set the high level configuration under RI subband PMI and set at least one information in the CQI information of subband of the high level configuration under RI.
32. base stations as claimed in claim 25, is characterized in that, CSI feedback model aperiodic of described expansion is mode of extension 2-0; The feedback content that mode of extension 2-0 is corresponding comprises:
Set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the CQI information of M the subband that the user under CQI information and the current RI in a broadband under current RI selects; With,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, feedback is set the CQI information in a broadband under RI and/or is set the CQI information of M the subband that the user under RI selects respectively.
33. base stations as claimed in claim 25, is characterized in that, CSI feedback model aperiodic of described expansion is mode of extension 2-2; The feedback content that mode of extension 2-2 is corresponding comprises:
Set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the PMI information of the subband that the high level under PMI and CQI information and the current RI of M the subband that the user under CQI information, the current RI in a broadband under current RI selects configures; With,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, respectively feedback set a broadband under RI CQI information, set broadband P MI information under RI, set the subband of the high level configuration under RI PMI, set the subband of the high level configuration under RI CQI information, set the PMI of M the subband that the user under RI selects and set at least one information in the CQI information of M subband of the user's selection under RI.
34. base stations as claimed in claim 25, it is characterized in that, be not included in the first setting transfer point metrical information in the second setting transfer point metrical information, or when this second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is not described setting RI, feeds back this second setting transfer point metrical information and setting CSI corresponding under RI.
35. as the base station as described in arbitrary in claim 28-33, it is characterized in that, feedback content also comprises:
The main transfer point metrical information that feedback is recommended or the index information of this metrical information.
36. as the base station as described in arbitrary in claim 28-33, it is characterized in that, feedback content also comprises:
Other all or part of transfer point metrical informations in feedback CSI measuring assembly aperiodic except reference transmission point measurement information are with respect to phase place and/or the amplitude information of reference transmission point measurement information.
37. 1 kinds of terminals, is characterized in that, this terminal comprises:
Receiving element, for receive the expansion that adopts of carrying out CSI aperiodic feedback that base station sends aperiodic CSI feedback model notice; The feedback content corresponding to CSI feedback model aperiodic of this expansion comprises: one or more first in feedback aperiodic CSI measuring assembly set transfer point metrical informations one or more second in corresponding CSI and aperiodic CSI measuring assembly under current data flow amount RI and set transfer point metrical informations and setting CSI corresponding under RI; Wherein, described one or more first sets transfer point metrical information comprises: a main transfer point metrical information, or the each main transfer point metrical information in the optional set of main transfer point metrical information, described one or more second sets transfer point metrical information comprises: the each transfer point metrical information in measuring assembly, or other transfer point metrical information except main transfer point metrical information in measuring assembly;
Feedback unit, for after the triggering signaling of carrying out CSI aperiodic feedback that receives base station transmission, carries out CSI feedback aperiodic according to CSI feedback model aperiodic of notified expansion.
38. terminals as claimed in claim 37, is characterized in that, described setting RI is the fixing RI making an appointment with base station, or a current RI that transfer point metrical information is corresponding.
39. terminals as described in claim 37 or 38, is characterized in that, if need to report RI under current transmission mode, current RI is the RI reporting for the corresponding current needs of transfer point metrical information; If do not need to report RI under current transmission mode, current RI is 1.
40. terminals as claimed in claim 37, is characterized in that, described feedback unit is used for:
In the time that the aperiodic of described expansion, CSI feedback model was mode of extension 1-2, set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the pre-coding matrix of S subband of the high level configuration under channel quality indicator CQI information and the current RI in a broadband under current RI and indicate PMI information; With,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, feedback is set the CQI information in a broadband under RI and is set the PMI information under RI respectively.
41. terminals as claimed in claim 40, is characterized in that, the PMI information under described setting RI is: the PMI information of a subband, or the PMI information of multiple subbands, or the PMI in a broadband.
42. terminals as claimed in claim 37, is characterized in that, described feedback unit is used for:
In the time that the aperiodic of described expansion, CSI feedback model was mode of extension 3-0, set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the PMI information of the subband of a high-rise configuration under CQI information and the current RI in a broadband under current RI; With,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, feedback is set the CQI information in a broadband under RI and/or is set the CQI information of the subband of a high-rise configuration under RI respectively.
43. terminals as claimed in claim 37, is characterized in that, described feedback unit is used for:
In the time that the aperiodic of described expansion, CSI feedback model was mode of extension 3-1, set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively PMI and the CQI information of the subband of the high level configuration under CQI information and the current RI in a broadband under current RI; With,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, respectively feedback set a broadband under RI CQI information, set a broadband under RI PMI information, set the high level configuration under RI subband PMI and set at least one information in the CQI information of subband of the high level configuration under RI.
44. terminals as claimed in claim 37, is characterized in that, described feedback unit is used for:
In the time that the aperiodic of described expansion, CSI feedback model was mode of extension 2-0, set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the CQI information of M the subband that the user under CQI information and the current RI in a broadband under current RI selects; With,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, feedback is set the CQI information in a broadband under RI and/or is set the CQI information of M the subband that the user under RI selects respectively.
45. terminals as claimed in claim 37, is characterized in that, described feedback unit is used for:
In the time that the aperiodic of described expansion, CSI feedback model was mode of extension 2-2, set transfer point metrical informations for one or more first in aperiodic CSI measuring assembly, feed back respectively the PMI information of the subband that the high level under PMI and CQI information and the current RI of M the subband that the user under CQI information, the current RI in a broadband under current RI selects configures; With,
Set transfer point metrical informations for one or more second in aperiodic CSI measuring assembly, respectively feedback set a broadband under RI CQI information, set broadband P MI information under RI, set the subband of the high level configuration under RI PMI, set the subband of the high level configuration under RI CQI information, set the PMI of M the subband that the user under RI selects and set at least one information in the CQI information of M subband of the user's selection under RI.
46. terminals as claimed in claim 37, is characterized in that, described feedback unit is used for:
Be not included in the first setting transfer point metrical information in the second setting transfer point metrical information, or when this second setting transfer point metrical information is included in the first setting transfer point metrical information and current RI is not described setting RI, feeds back this second setting transfer point metrical information and setting CSI corresponding under RI.
47. as the terminal as described in arbitrary in claim 40-45, it is characterized in that, described feedback unit also for:
The main transfer point metrical information that feedback is recommended or the index information of this metrical information.
48. as the terminal as described in arbitrary in claim 40-45, it is characterized in that, described feedback unit also for:
Other all or part of transfer point metrical informations in feedback CSI measuring assembly aperiodic except reference transmission point measurement information are with respect to phase place and/or the amplitude information of reference transmission point measurement information.
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