CN102291228A

CN102291228A - Channel state information feedback and receiving methods and equipment

Info

Publication number: CN102291228A
Application number: CN2011102345879A
Authority: CN
Inventors: 张然然; 高秋彬; 彭莹; 陈文洪
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2011-08-16
Filing date: 2011-08-16
Publication date: 2011-12-21
Anticipated expiration: 2031-08-16
Also published as: CN102291228B

Abstract

The embodiment of the invention discloses a channel state information feedback method, channel state information feedback equipment, a channel state information receiving method and channel state information receiving equipment. By the technical scheme provided by the embodiment of the invention, user equipment feeds channel state information back to network side equipment in a periodic reporting mode supporting coordinated multiple point (CoMP) transmission, wherein a corresponding periodic reporting mode comprises a reporting type used for feeding the rank indication (RI) of a main transmission point back, a reporting type used for feeding a channel quality indicator (CQI) and a precoding matrix indicator (PMI) of the main transmission point back, and/or a reporting type used for feeding the CQI and PMI of a non-main transmission point back, and/or a reporting type used for feeding the CQI and PMI, based on the hypothesis of RI=1, of the main transmission point back. Therefore, various CoMP transmission schemes can be supported.

Description

The feedback of channel condition information, method of reseptance and equipment

Technical field

The present invention relates to communication technical field, particularly a kind of feedback of channel condition information, method of reseptance and equipment.

Background technology

LTE-A(Long Term Evolution-Advanced, senior Long Term Evolution) system adopts identical networking, when increasing substantially the availability of frequency spectrum, also can cause the signal fadeout of Cell Edge User serious, and be subjected to higher interference from other sub-districts, therefore, if signal fadeout and interference problem are not handled, will have a strong impact on the experience of Cell Edge User.

CoMP(Coordinated Multiple Point, multipoint cooperative) technology is by introducing information interaction and the joint transmission between many sub-districts, can improve signal quality, and reduce presence of intercell interference, thereby increase substantially the data transmission performance of Cell Edge User.Wherein, the multipoint cooperative transmission plan can be divided into: DPS(Dynamic Point Selection, the dynamic transmission point selection), CBF(Coordinated BeamForming, the cooperative beam figuration), JT(Joint Transmission, joint transmission) or the hybrid plan of above 3 class transmission plans; For example, when DPS and CBF combined, master's transmission point was definite by Dynamic Selection, and and non-main the transmission between the outer cooperation transmission point of point by combined dispatching realization cooperative beam figuration.

In realizing process of the present invention, the inventor finds to exist at least in the prior art following problem:

In the prior art,, support the cycle channel status information reports pattern of CoMP transmission not in conjunction with channel up-downgoing reciprocity.

Summary of the invention

The embodiment of the invention provides a kind of feedback, method of reseptance and equipment of channel condition information, solves the problem that does not define at the corresponding relation between code book compression back pre-coding matrix indication information and the code book index in the existing technology.

For achieving the above object, the embodiment of the invention provides a kind of feedback method of channel status information on the one hand, comprising:

Terminal equipment is determined channel condition information based on channel estimation value;

Described terminal equipment utilization supports the cycle Report mode of multipoint cooperative CoMP transmission to feed back described channel condition information, wherein, comprises in the described cycle Report mode:

The Report Type that is used to feed back the Report Type of main transmission point order indication RI and is used to feed back main transmission point channel quality indicator (CQI) and pre-coding matrix PMI; And/or,

Be used to feed back the Report Type of non-main transmission point CQI and PMI; And/or,

Be used to feed back main transmission point based on the CQI of RI=1 hypothesis and the Report Type of PMI.

On the other hand, the embodiment of the invention also provides a kind of method of reseptance of channel condition information, comprising:

The network equipment utilization supports the cycle Report mode of multipoint cooperative CoMP transmission to receive the channel condition information of subscriber equipment feedback; Comprise in the described cycle Report mode: the Report Type that is used to feed back the Report Type of main transmission point order indication RI and is used to feed back main transmission point channel quality indicator (CQI) and pre-coding matrix PMI; And/or be used to feed back the Report Type of non-main transmission point CQI and PMI; And/or be used to feed back main transmission point based on the CQI of RI=1 hypothesis and the Report Type of PMI;

Described network equipment is handled according to described channel condition information.

On the other hand, the embodiment of the invention also provides a kind of terminal equipment, comprising:

Determination module is used for determining channel condition information based on channel estimation value;

Sending module is used to utilize and supports the cycle Report mode of multipoint cooperative CoMP transmission to feed back described channel condition information, wherein, comprises in the described cycle Report mode:

On the other hand, the embodiment of the invention also provides a kind of network equipment, comprises at least:

Receiver module is used to utilize the cycle Report mode of supporting multipoint cooperative CoMP transmission to receive the channel condition information of subscriber equipment feedback; Comprise in the described cycle Report mode: the Report Type that is used to feed back the Report Type of main transmission point order indication RI and is used to feed back main transmission point channel quality indicator (CQI) and pre-coding matrix PMI; And/or be used to feed back the Report Type of non-main transmission point CQI and PMI; And/or be used to feed back main transmission point based on the CQI of RI=1 hypothesis and the Report Type of PMI;

Processing module is used for handling according to described channel condition information.

Compared with prior art, the embodiment of the invention has the following advantages:

By using the technical scheme of the embodiment of the invention, terminal equipment passes through the cycle Report mode of support CoMP transmission to the network equipment feeding back channel state information, thereby, can support various CoMP transmission plans.

Description of drawings

In order to be illustrated more clearly in technical scheme of the present invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the schematic flow sheet of the feedback receiver method of a kind of channel condition information that the embodiment of the invention proposed;

Fig. 2 is the structural representation of a kind of terminal equipment that the embodiment of the invention proposed;

Fig. 3 is the structural representation of a kind of network equipment that the embodiment of the invention proposed.

Embodiment

The inventor notices in realizing process of the present invention: in real system, a transmission mode may comprise multiple transmission plan, supports the mode switch between all kinds of transmission plans.In order to guarantee the transmission performance and the stability of a system better, often need in the transmission mode of CoMP transmission to support to support switching to unicast.

System is by the different CSI-RS(Channel State Information Reference Signal of configuration, channel state information reference signals) makes UE(User Equipment, terminal equipment, i.e. terminal equipment) can measure the down channel of each " transmission point ".It should be noted that " transmission point " may not be the transmission point of a physics, and may be a virtual transmission point that each virtual transmission is o'clock corresponding to a CSI-RS resource, constitute by the transmission point of one or more physics.

After realizing that down channel is measured, carry out feedback information according to the needed channel condition information of transmission plan.All kinds of transmission plans need corresponding channel condition information support.Such as, DPS needs the channel condition information of a plurality of transmission points, perhaps the channel condition information of some transmission points and the pairing CSI-RS index information of this transmission point.CBF and irrelevant JT need lead the RI(Rank Indication of transmission point, the order indication) the not limited channel condition information and the channel condition information based on the RI=1 hypothesis of non-main transmission point.Relevant JT need lead the not limited channel condition information of RI of transmission point, the channel condition information of the RI=1 of each transmission point, and the relative phase information of each transmission point.So-called main transmission point be among DPS and the CBF to the transmission point of UE transmission data, perhaps JT if when returning back to unicast to the transmission point of UE transmission data.

During actual the realization, can realize general feedback by the mode of classification feedback, promptly (measuring assembly is that network is the transmission point set of UE configuration to measuring assembly, UE need observe the channel condition information of the transmission point in the measuring assembly, and realize feedback) in the channel condition information of each transmission point feedback single-point, phase information and/or the amplitude information between the feedback transmission point respectively again.Network is based on the synthetic channel condition information of transmission in the measuring assembly being put UE of this two parts information.

Comprising two transmission points with measuring assembly is example, the channel of two transmission point UE be designated as respectively and, UE is that two transmission points are selected pre-coding matrix respectively

Figure 2011102345879100002DEST_PATH_IMAGE001

With

(the pre-coding matrix here is channel condition information), the then phase place of two minizones and amplitude information

Can choose as follows:

Wherein, gBelong to predefined code book set.If

Figure 2011102345879100002DEST_PATH_IMAGE005

With

Columns be designated as M, then gFor M* MDiagonal matrix, M=1 gDeteriorate to a scalar.

If gBe scalar, then its code book set A can be 16QAM(Quadrature Amplitute Modulation, quadrature amplitude modulation) point in the planisphere:

Also can be QPSK(Quadrature Phase Shift Keying, Quadrature Phase Shift Keying) point in the planisphere:

In the such scheme, UE puts on an equal footing all transmission points when feedback.And in fact, the effect in various schemes of these transmission points is also inequality.In cooperative scheduling/wave beam forming and dynamic transmission point selection scheme, have only 1 point to send data to UE, the required precision meeting of the channel information of this transmission point is higher than other transmission point, and this transmission point should the support space multiplexing transmission (promptly allow RANK〉1).Dynamic transmission point selection scheme in fact only needs the channel condition information of 1 transmission point, and in order to support other scheme, information of other transmission points also need be fed back, but to not what meaning of dynamic transmission point selection scheme.The JP scheme supports high RANK transmission can't bring tangible performance boost, but can bring very high complexity to feedback, therefore, supports the feedback of JP scheme only to need each to transmit the channel condition information of the RANK 1 of point.

In addition, at existing LTE(Long Term Evolution, Long Term Evolution) in the system, support two class channel condition information feedback systems, promptly based on PUCCH(Physical Uplink Control Channel, Physical Uplink Control Channel) periodic feedback and based on PUSCH(Physical Uplink Shared Channel, Physical Uplink Shared Channel) aperiodic channel status information feedback.

As shown in table 1, in periodic feedback, comprise 4 class Report modes (reporting mode) based on PUCCH, be respectively pattern 1-0,2-0,1-1 and 2-1; As shown in table 2, the various reports pattern comprises 1 altogether, 1a, 2,2a, 2b, 2c, 3,4,5,6 totally 10 kinds of Report Types (reporting type).Wherein, pattern 1-0 and 2-0 support not comprise the channel condition information feedback of PMI feedback, can be used for the MIMO(Multiple-Input Multiple-Output of TDD system, multiple-input and multiple-output) transmission; Yet above Report mode all can't be supported the CoMP transmission.

Table 1

Table 2

Based on above-mentioned discovery, the embodiment of the invention provides a kind of feedback method of channel status information, method of reseptance and equipment thereof, UE passes through the cycle Report mode of support CoMP transmission to the network equipment reporting status information of channel, thereby can support various CoMP transmission plans.

Below in conjunction with the accompanying drawing among the present invention, the technical scheme among the present invention is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.

The embodiment of the invention provides a kind of feedback receiver method (for the UE side, be feeding back channel state information, for network equipment, be receiving channel state information) of channel condition information.

As shown in Figure 1, the schematic flow sheet for the feedback receiver method of a kind of channel condition information that the embodiment of the invention proposed specifically may further comprise the steps:

Step S101, UE determine channel condition information based on channel estimation value.

Step S102, UE utilize the cycle Report mode feeding back channel state information of supporting the CoMP transmission, and promptly UE passes through the PUCCH channel to network equipment (as eNB, base station etc.) feeding back channel state information.

Wherein, comprise in the described cycle Report mode:

The Report Type that is used to feed back the Report Type of main transmission point RI and is used to feed back main transmission point CQI and PMI; And/or,

In the embodiment of the invention,, can comprise existing P UCCH Report Type (Reporting Type) in the designed cycle Report mode, also can comprise some new Report Types in order to support the CoMP transmission.Therefore, specify as follows to above-mentioned Report Type:

Type one, the Report Type that is used to feed back the Report Type of main transmission point RI and is used to feed back main transmission point CQI and PMI.

In the embodiment of the invention, at the described Report Type that is used for feeding back main transmission point RI, also comprise the pairing CSI-RS numbering of main transmission point, this CSI-RS number information is the B bit altogether.

In concrete enforcement scene, the described Report Type that is used to feed back main transmission point RI is LTE/LTE-A PUCCH Report Type 3, Report Type 5 or Report Type 6; Or,

The described Report Type that is used to feed back main transmission point RI is Report Type 3a, Report Type 5a or Report Type 6a, and wherein, Report Type 3a, Report Type 5a or Report Type 6a are improved Report Type 3, Report Type 5 or Report Type 6.

Wherein, described Report Type 3a is used to feed back main transmission point RI and the pairing CSI-RS numbering of main transmission point, described Report Type 5a is used to feed back main transmission point RI, PMI and the pairing CSI-RS numbering of main transmission point, and described Report Type 6a is used to feed back main transmission point RI, PTI and the pairing CSI-RS numbering of main transmission point.

In concrete enforcement scene, be used to feed back the main Report Type that transmits some CQI and PMI and specifically comprise LTE/LTE-A PUCCH Report Type 2, Report Type 2a, Report Type 2b, Report Type 2c, Report Type 1 and/or Report Type 1a.

Further, according to the difference of the content of being fed back, can be specially and be following type:

(1) is used to feed back the main Report Type that transmits some broadband P MI.

(2) be used to feed back the main Report Type that transmits some broadband CQI and PMI.

(3) be used to feed back the main Report Type that transmits some subband CQI and PMI.

(4) be used to feed back the main Report Type that transmits some subband CQI.

In the technical scheme that the embodiment of the invention proposed, the described Report Type that is used to feed back the Report Type of main transmission point broadband P MI and/or is used to feed back main transmission point broadband CQI and PMI also comprises the pairing CSI-RS numbering of main transmission point, and this CSI-RS number information is the B bit altogether.

Further, according to particular content entrained in the corresponding Report Type, the embodiment of the invention proposes following Report Type.

A described Report Type that is used to feed back main transmission point broadband P MI is the improved Report Type 2a of Report Type 2a-e(), described Report Type 2a-e is used to feed back main transmission point broadband the one PMI and the pairing CSI-RS numbering of main transmission point.

The described Report Type that is used to feed back main transmission point broadband CQI and PMI is the improved Report Type 2 of Report Type 2-e(), the improved Report Type 2b of Report Type 2b-e() or the improved Report Type 2c of Report Type 2c-e().

Concrete, described Report Type 2-e is used to feed back main transmission point broadband CQI and PMI, and the pairing CSI-RS numbering of main transmission point, described Report Type 2b-e is used to feed back main transmission point broadband CQI and broadband the 2nd PMI, and the pairing CSI-RS numbering of main transmission point, described Report Type 2c-e is used to feed back main transmission point broadband CQI, broadband the one PMI and broadband the 2nd PMI, and the pairing CSI-RS numbering of main transmission point.

The described Report Type that is used to feed back main transmission point subband CQI and PMI is Report Type 1a-e, and described Report Type 1a-e is used to feed back main transmission point subband CQI and the PMI information that does not comprise subband location index information.

A described Report Type that is used to feed back non-main transmission point subband CQI is Report Type 1-e, and described Report Type 1-e is used to feed back the main transmission point subband CQI information that does not comprise subband location index information.

In the application scenarios of reality, main transmission point CQI and/or PMI in the above-mentioned various report type are specially:

Determined CQI of RI value and/or PMI value that described terminal equipment reported according to the last time;

If there is not RI to report before, then be that described terminal equipment is according to determined CQI of RI value and/or the PMI value determined based on preset rules.

Type two, be used to feed back the Report Type of non-main transmission point CQI and PMI.

In concrete enforcement scene, the Report Type that is used to feed back non-main transmission point CQI and PMI specifically comprises one or more of following type:

(1) be used to feed back non-main transmission point based on the broadband CQI of RI=1 hypothesis and the Report Type of PMI, be specially Report Type 2d.

In concrete enforcement scene, at the described Report Type that is used for feeding back non-main transmission point CQI and PMI, the phase information that also comprises the main relatively transmission point of described non-main transmission point, be specially the broadband phase information, the bit number of each broadband phase information is B9, accordingly, described Report Type 2d can be used to feed back the broadband CQI and the PMI based on the RI=1 hypothesis of non-main transmission point, and the broadband phase information of the main relatively transmission point of described non-main transmission point.

(2) be used to feed back non-main transmission point based on the subband CQI of RI=1 hypothesis and the Report Type of PMI, be specially Report Type 1b.

In concrete enforcement scene, at the described Report Type that is used for feeding back non-main transmission point CQI and PMI, the phase information that also comprises the main relatively transmission point of described non-main transmission point, be specially the subband phase information, it is identical with the subband position that CQI reports, the bit number of each subband phase information is B10, accordingly, described Report Type 1b can be used to feed back the subband CQI and the PMI based on the RI=1 hypothesis of non-main transmission point, and the subband phase information of the main relatively transmission point of described non-main transmission point.

It is to be noted, in one case, described Report Type 1b be used to feed back the non-main transmission point that do not comprise subband location index information based on the subband CQI of RI=1 hypothesis and PMI or feed back the subband phase information based on subband CQI and the PMI and the relative main transmission point of described non-main transmission point of RI=1 hypothesis of non-main transmission point, described subband CQI, PMI and/or the pairing subband of phase information position are pairing identical with reference to the frequency domain resource position with a main transmission subband CQI and/or the PMI information of the last feedback before.

In another case, described Report Type 1b comprises subband location index information.

In the application scenarios of reality, because non-main transmission point is compared main transmission point to PMI with the quantified precision of CQI feedback lower, the information bit that PMI/CQI among Report Type 2d and/or the 1b comprised can be less than respective antenna port in the main transmission point, the information bit that PMI/CQI comprised during the corresponding data number of plies, promptly, CQI quantification gradation and code book to non-main transmission point compress, the information bit that the CQI information of each code word among Report Type 2d and/or the Report Type 1b is comprised is less than 4 bits and/or PMI information is selected from a codebook subset, and described codebook subset is set at non-main transmission point PMI feedback.

As, the bit number of broadband single codeword CQI and subband single codeword CQI is respectively B1 or B2 bit, and number of transmit antennas is respectively under 2,4,8 the situation, and the bit number of broadband P MI is respectively B3, B4, B5, and the bit number of subband PMI is respectively B6, B7 and B8.

Type three, described be used to feed back main transmission point based on the CQI of RI=1 hypothesis and the Report Type of PMI.

In the application scenarios of reality, the above-mentioned type specifically comprises one or more of following type:

(1) be used to feed back main transmission point based on the broadband CQI of RI=1 hypothesis and the Report Type of PMI, be specially Report Type 2e.

In concrete enforcement scene, described Report Type 2e is used to feed back the broadband CQI and the PMI based on the RI=1 hypothesis of main transmission point, and the pairing CSI-RS numbering of main transmission point, and this this CSI-RS number information is the B bit altogether.

(2) be used to feed back main transmission point based on the subband CQI of RI=1 hypothesis and the Report Type of PMI, be specially Report Type 1c.

In concrete enforcement scene, under a kind of scene, described Report Type 1c is used to feed back the subband CQI that does not comprise subband location index information and the PMI and/or the pairing CSI-RS numbering of main transmission point based on the RI=1 hypothesis of main transmission point, this CSI-RS number information is the B bit altogether, and described subband CQI and the pairing subband of PMI information position are pairing identical with reference to the frequency domain resource position with a main transmission subband CQI and/or the PMI information of the last feedback before.

Under another kind of scene, described Report Type 1c comprises subband location index information.

Concrete, the PMI bit number of 8 antenna ports is respectively B11 and B12 among Report Type 2e and the Report Type 1c.

Further, the RI information that reports in described terminal equipment the last time is 1 o'clock, and described terminal equipment abandons reporting Report Type 2e and/or Report Type 1c.

Need to prove, the report cycle of channel condition information with report the timing off-set amount to carry out semi-static control by high-level signaling, and report cycle and report the timing off-set amount to carry out separate configurations.Further, channel condition information reports the corresponding different Report Type of various combination of content, and the corresponding different priority of different Report Types; When according to the report cycle of each Report Type when reporting the timing off-set amount to determine between different Report Types, to bump, UE selects the Report Type of high priority to report.

Particularly, a kind of Report mode comprises above-mentioned partial report type, and the Report Type that is comprised set is not simultaneously, then is different Report modes; In above-mentioned new Report mode, can also increase other Report Type, and in this report pattern, the report cycle of each Report Type with report the timing off-set amount to carry out semi-static control by high-level signaling, and its report cycle can separate configurations with the timing off-set amount that reports.In the embodiment of the invention, need to distribute different priority for each Report Type that uses in the new Report mode in advance, and when report cycle and timing off-set according to each Report Type, determine when bumping between the different Report Types, UE need select the Report Type of high priority to report, and abandons the Report Type of low priority.

In the embodiment of the invention, in order to guarantee that network equipment can obtain the frequency selectivity information of down channel, and keep lower PUCCH feedback overhead as far as possible, giving the correct time on the subband, can to adopt with BP be that the polling mode of unit is carried out or is that unit carries out the mode that subband selects and carries out with BP, and indicate by the subband index (subband lable) of L bit.

Based on above-mentioned situation, the Report mode that the embodiment of the invention provides can be as shown in table 3.

Table 3

Wherein, L represents the information bit that the subband positional information is comprised.

Channel condition information based on above-mentioned UE side feedback at network side, can also may further comprise the steps:

Step S103, the network equipment utilization supports the cycle Report mode of CoMP transmission to receive the channel condition information of UE feedback.

The explanation of corresponding cycle Report mode is referring to aforementioned description, in this no longer repeat specification.

Step 104, network equipment is handled according to channel condition information.Give unnecessary details no longer in detail in this processing procedure embodiment of the invention.

By using the technical scheme of the embodiment of the invention, terminal equipment passes through to support the cycle Report mode of CoMP transmission to the network equipment feeding back channel state information, wherein, comprise in the corresponding cycle Report mode: the Report Type that is used to feed back the Report Type of main transmission point order indication RI and is used to feed back main transmission point channel quality indicator (CQI) and pre-coding matrix PMI; And/or be used to feed back the Report Type of non-main transmission point CQI and PMI; And/or be used to feed back main transmission point based on the CQI of RI=1 hypothesis and the Report Type of PMI, thereby, can support various CoMP transmission plans.

In order to realize the technical scheme of the embodiment of the invention, the embodiment of the invention has also proposed a kind of terminal equipment, and its structural representation specifically comprises as shown in Figure 2:

Determination module 21 is used for determining channel condition information based on channel estimation value;

Sending module 22 is used to utilize and supports the cycle Report mode of multipoint cooperative CoMP transmission to feed back described channel condition information, wherein, comprises in the described cycle Report mode:

Wherein, the described Report Type that is used to feed back main transmission point RI is LTE/LTE-A Physical Uplink Control Channel PUCCH Report Type 3, Report Type 5 or Report Type 6.

In concrete enforcement scene,, also comprise the pairing channel state information reference signals CSI-RS numbering of main transmission point at the described Report Type that is used for feeding back main transmission point RI.

Wherein, the described Report Type that is used to feed back main transmission point RI is Report Type 3a, Report Type 5a or Report Type 6a, described Report Type 3a, be used to feed back main transmission point RI and the pairing CSI-RS numbering of main transmission point, described Report Type 5a, be used to feed back main transmission point RI, PMI and the pairing CSI-RS numbering of main transmission point, described Report Type 6a is used to feed back a main transmission point RI, precoding type indication PTI and the pairing CSI-RS numbering of main transmission point.

On the other hand, the described Report Type that is used to feed back main transmission point CQI and PMI specifically comprises:

Be used to feed back the Report Type of main transmission point broadband P MI; And/or,

Be used to feed back the Report Type of main transmission point broadband CQI and PMI; And/or,

Be used to feed back the Report Type of main transmission point subband CQI and PMI; And/or,

Be used to feed back the Report Type of main transmission point subband CQI.

Concrete, the described Report Type that is used to feed back main transmission point CQI and PMI is LTE/LTE-A PUCCH Report Type 2, Report Type 2a, Report Type 2b, Report Type 2c, Report Type 1 and/or Report Type 1a.

Wherein, the described Report Type that is used to feed back the Report Type of main transmission point broadband P MI and/or is used to feed back main transmission point broadband CQI and PMI also comprises the pairing channel state information reference signals CSI-RS numbering of main transmission point.

A described Report Type that is used to feed back main transmission point broadband P MI is Report Type 2a-e, and described Report Type 2a-e is used to feed back main transmission point broadband the one PMI and the pairing CSI-RS numbering of main transmission point.

The described Report Type that is used to feed back main transmission point broadband CQI and PMI is Report Type 2-e, Report Type 2b-e, or Report Type 2c-e, described Report Type 2-e is used to feed back main transmission point broadband CQI and PMI, and the pairing CSI-RS numbering of main transmission point, described Report Type 2b-e is used to feed back main transmission point broadband CQI and broadband the 2nd PMI, and the pairing CSI-RS numbering of main transmission point, described Report Type 2c-e is used to feed back main transmission point broadband CQI, broadband the one PMI and broadband the 2nd PMI, and the pairing CSI-RS numbering of main transmission point.

Wherein, described main transmission point CQI and/or PMI are specially:

On the other hand, the described Report Type that is used to feed back non-main transmission point CQI and PMI specifically comprises:

Be used to feed back non-main transmission point based on the broadband CQI of RI=1 hypothesis and the Report Type of PMI; And/or,

Be used to feed back non-main transmission point based on the subband CQI of RI=1 hypothesis and the Report Type of PMI;

It is wherein, described that what be used to feed back non-main transmission point is Report Type 2d based on the broadband CQI of RI=1 hypothesis and the Report Type of PMI;

It is described that what be used to feed back non-main transmission point is Report Type 1b based on the subband CQI of RI=1 hypothesis and the Report Type of PMI.

Further, at the described Report Type that is used for feeding back non-main transmission point CQI and PMI, also comprise the phase information of the main relatively transmission point of described non-main transmission point.

Concrete, described Report Type 2d is used to feed back the broadband CQI and the PMI based on the RI=1 hypothesis of non-main transmission point, and the broadband phase information of the main relatively transmission point of described non-main transmission point.

Described Report Type 1b is used to feed back the subband CQI and the PMI based on the RI=1 hypothesis of non-main transmission point, and the subband phase information of the main relatively transmission point of described non-main transmission point.

Wherein, described Report Type 1b be used to feed back the non-main transmission point that do not comprise subband location index information based on the subband CQI of RI=1 hypothesis and PMI or feed back the subband phase information based on subband CQI and the PMI and the relative main transmission point of described non-main transmission point of RI=1 hypothesis of non-main transmission point, described subband CQI, PMI and/or the pairing subband of phase information position are pairing identical with reference to the frequency domain resource position with a main transmission subband CQI and/or the PMI information of the last feedback before.

Under the another kind of situation, described Report Type 1b comprises subband location index information.

It is to be noted, the information bit that the CQI information of each code word among Report Type 2d and/or the Report Type 1b is comprised is less than 4 bits and/or PMI information is selected from a codebook subset, and described codebook subset is set at non-main transmission point PMI feedback.

On the other hand, described be used to feed back main transmission point based on the CQI of RI=1 hypothesis and the Report Type of PMI, specifically comprise:

Be used to feed back main transmission point based on the broadband CQI of RI=1 hypothesis and the Report Type of PMI; And/or,

Be used to feed back main transmission point based on the subband CQI of RI=1 hypothesis and the Report Type of PMI;

It is wherein, described that what be used to feed back main transmission point is Report Type 2e based on the broadband CQI of RI=1 hypothesis and the Report Type of PMI;

It is described that what be used to feed back main transmission point is Report Type 1c based on the subband CQI of RI=1 hypothesis and the Report Type of PMI.

Concrete, described Report Type 2e is used to feed back the broadband CQI and the PMI based on the RI=1 hypothesis of main transmission point, and the pairing CSI-RS numbering of main transmission point.

Described Report Type 1c is used to feed back the subband CQI that does not comprise subband location index information and the PMI and/or the pairing CSI-RS numbering of main transmission point based on the RI=1 hypothesis of main transmission point, and described subband CQI and the pairing subband of PMI information position are pairing identical with reference to the frequency domain resource position with a main transmission subband CQI and/or the PMI information of the last feedback before.

Implement in the scene at another kind, described Report Type 1c comprises subband location index information.

Wherein, described sending module 22, the RI information that specifically is used for reporting in the last time is 1 o'clock, abandons reporting Report Type 2e and/or Report Type 1c.

The report cycle of described channel condition information with report the timing off-set amount to carry out semi-static control by high-level signaling, and described report cycle with report the timing off-set amount to carry out separate configurations.

Wherein, described channel condition information reports the corresponding different Report Type of various combination of content, and the corresponding different priority of different Report Types; When according to the report cycle of each Report Type when reporting the timing off-set amount to determine between different Report Types, to bump, described sending module 22 is used to select the Report Type of high priority to report.

On the other hand, the embodiment of the invention also provides a kind of network equipment, and its structural representation comprises as shown in Figure 3:

Receiver module 31 is used to utilize the cycle Report mode of supporting multipoint cooperative CoMP transmission to receive the channel condition information of subscriber equipment feedback; Comprise in the described cycle Report mode: the Report Type that is used to feed back the Report Type of main transmission point order indication RI and is used to feed back main transmission point channel quality indicator (CQI) and pre-coding matrix PMI; And/or be used to feed back the Report Type of non-main transmission point CQI and PMI; And/or be used to feed back main transmission point based on the CQI of RI=1 hypothesis and the Report Type of PMI;

Processing module 32 is used for handling according to described channel condition information.

Wherein, at the described Report Type that is used for feeding back main transmission point RI, also comprise the pairing channel state information reference signals CSI-RS numbering of main transmission point.

Wherein, the described Report Type that is used to feed back main transmission point CQI and PMI specifically comprises:

Be used to feed back the Report Type of main transmission point subband CQI.

Wherein, the described Report Type that is used to feed back non-main transmission point CQI and PMI specifically comprises:

Be used to feed back non-main transmission point based on the subband CQI of RI=1 hypothesis and the Report Type of PMI.

At the described Report Type that is used for feeding back non-main transmission point CQI and PMI, also comprise the phase information of the main relatively transmission point of described non-main transmission point.

Wherein, described be used to feed back main transmission point based on the CQI of RI=1 hypothesis and the Report Type of PMI, specifically comprise:

Be used to feed back main transmission point based on the subband CQI of RI=1 hypothesis and the Report Type of PMI.

Wherein, the report cycle of described channel condition information with report the timing off-set amount to carry out semi-static control by high-level signaling, and described report cycle with report the timing off-set amount to carry out separate configurations.

Through the above description of the embodiments, those skilled in the art can be well understood to the embodiment of the invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, the technical scheme of the embodiment of the invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) each implements the described method of scene to carry out the embodiment of the invention.

It will be appreciated by those skilled in the art that accompanying drawing is a preferred schematic diagram of implementing scene, module in the accompanying drawing or flow process might not be that the enforcement embodiment of the invention is necessary.

It will be appreciated by those skilled in the art that the module in the device of implementing in the scene can be distributed in the device of implementing scene according to implementing scene description, also can carry out respective change and be arranged in the one or more devices that are different from this enforcement scene.The module of above-mentioned enforcement scene can be merged into a module, also can further split into a plurality of submodules.

The invention described above embodiment sequence number is not represented the quality of implementing scene just to description.

More than disclosed only be the several concrete enforcement scene of the embodiment of the invention, still, the embodiment of the invention is not limited thereto, any those skilled in the art can think variation all should fall into the traffic limits scope of the embodiment of the invention.

Claims

1. a feedback method of channel status information is characterized in that, may further comprise the steps at least:

2. the method for claim 1 is characterized in that, the described Report Type that is used to feed back main transmission point RI is LTE/LTE-A Physical Uplink Control Channel PUCCH Report Type 3, Report Type 5 or Report Type 6.

3. the method for claim 1 is characterized in that, at the described Report Type that is used for feeding back main transmission point RI, also comprises:

The pairing channel state information reference signals CSI-RS numbering of main transmission point.

4. method as claimed in claim 3, it is characterized in that, the described Report Type that is used to feed back main transmission point RI is Report Type 3a, Report Type 5a or Report Type 6a, described Report Type 3a is used to feed back main transmission point RI and the pairing CSI-RS numbering of main transmission point, described Report Type 5a is used to feed back main transmission point RI, PMI and the pairing CSI-RS numbering of main transmission point, and described Report Type 6a is used to feed back main transmission point RI, precoding type indication PTI and the pairing CSI-RS numbering of main transmission point.

5. the method for claim 1 is characterized in that, the described Report Type that is used to feed back main transmission point CQI and PMI specifically comprises:

Be used to feed back the Report Type of main transmission point subband CQI.

6. method as claimed in claim 5, it is characterized in that the described Report Type that is used to feed back main transmission point CQI and PMI is LTE/LTE-A PUCCH Report Type 2, Report Type 2a, Report Type 2b, Report Type 2c, Report Type 1 and/or Report Type 1a.

7. method as claimed in claim 5 is characterized in that, the described Report Type that is used to feed back the Report Type of main transmission point broadband P MI and/or is used to feed back main transmission point broadband CQI and PMI also comprises:

8. method as claimed in claim 7, it is characterized in that, a described Report Type that is used to feed back main transmission point broadband P MI is Report Type 2a-e, and described Report Type 2a-e is used to feed back main transmission point broadband the one PMI and the pairing CSI-RS numbering of main transmission point.

9. method as claimed in claim 7, it is characterized in that, the described Report Type that is used to feed back main transmission point broadband CQI and PMI is Report Type 2-e, Report Type 2b-e, or Report Type 2c-e, described Report Type 2-e is used to feed back main transmission point broadband CQI and PMI, and the pairing CSI-RS numbering of main transmission point, described Report Type 2b-e is used to feed back main transmission point broadband CQI and broadband the 2nd PMI, and the pairing CSI-RS numbering of main transmission point, described Report Type 2c-e is used to feed back main transmission point broadband CQI, broadband the one PMI and broadband the 2nd PMI, and the pairing CSI-RS numbering of main transmission point.

10. method as claimed in claim 5, it is characterized in that, the described Report Type that is used to feed back main transmission point subband CQI and PMI is Report Type 1a-e, and described Report Type 1a-e is used to feed back main transmission point subband CQI and the PMI information that does not comprise subband location index information.

11. method as claimed in claim 5 is characterized in that, a described Report Type that is used to feed back non-main transmission point subband CQI is Report Type 1-e, and described Report Type 1-e is used to feed back the main transmission point subband CQI information that does not comprise subband location index information.

12., it is characterized in that described main transmission point CQI and/or PMI value are specially as each described method in the claim 2 to 11:

13. the method for claim 1 is characterized in that, the described Report Type that is used to feed back non-main transmission point CQI and PMI specifically comprises:

14. method as claimed in claim 13 is characterized in that, at the described Report Type that is used for feeding back non-main transmission point CQI and PMI, also comprises:

The phase information of the main relatively transmission point of described non-main transmission point.

15. method as claimed in claim 14 is characterized in that, described Report Type 2d is used to feed back the broadband CQI and the PMI based on the RI=1 hypothesis of non-main transmission point, and the broadband phase information of the main relatively transmission point of described non-main transmission point.

16. method as claimed in claim 14 is characterized in that, described Report Type 1b is used to feed back the subband CQI and the PMI based on the RI=1 hypothesis of non-main transmission point, and the subband phase information of the main relatively transmission point of described non-main transmission point.

17. as claim 13 or 16 described methods, it is characterized in that, described Report Type 1b be used to feed back the non-main transmission point that do not comprise subband location index information based on the subband CQI of RI=1 hypothesis and PMI or feed back the subband phase information based on subband CQI and the PMI and the relative main transmission point of described non-main transmission point of RI=1 hypothesis of non-main transmission point, described subband CQI, PMI and/or the pairing subband of phase information position are pairing identical with reference to the frequency domain resource position with a main transmission subband CQI and/or the PMI information of the last feedback before.

18. method as claimed in claim 13 is characterized in that, described Report Type 1b comprises subband location index information.

19. method as claimed in claim 13, it is characterized in that, the information bit that the CQI information of each code word among Report Type 2d and/or the Report Type 1b is comprised is less than 4 bits and/or PMI information is selected from a codebook subset, and described codebook subset is set at non-main transmission point PMI feedback.

20. the method for claim 1 is characterized in that, described be used to feed back main transmission point based on the CQI of RI=1 hypothesis and the Report Type of PMI, specifically comprise:

21. method as claimed in claim 20 is characterized in that, described Report Type 2e is used to feed back the broadband CQI and the PMI based on the RI=1 hypothesis of main transmission point, and the pairing CSI-RS numbering of main transmission point.

22. method as claimed in claim 20, it is characterized in that, described Report Type 1c is used to feed back the subband CQI that does not comprise subband location index information and the PMI and/or the pairing CSI-RS numbering of main transmission point based on the RI=1 hypothesis of main transmission point, and described subband CQI and the pairing subband of PMI information position are pairing identical with reference to the frequency domain resource position with a main transmission subband CQI and/or the PMI information of the last feedback before.

23. method as claimed in claim 20 is characterized in that, described Report Type 1c comprises subband location index information.

24. method as claimed in claim 20 is characterized in that, the RI information that reports in described terminal equipment the last time is 1 o'clock, and described terminal equipment abandons reporting Report Type 2e and/or Report Type 1c.

25. as each described method among claim 1-11,13-16, the 18-24, it is characterized in that, the report cycle of described channel condition information with report the timing off-set amount to carry out semi-static control by high-level signaling, and described report cycle with report the timing off-set amount to carry out separate configurations.

26. method as claimed in claim 25 is characterized in that, described channel condition information reports the corresponding different Report Type of various combination of content, and the corresponding different priority of different Report Types;

When according to the report cycle of each Report Type when reporting the timing off-set amount to determine between different Report Types, to bump, described subscriber equipment selects the Report Type of high priority to report.

27. the method for reseptance of a channel condition information is characterized in that, may further comprise the steps at least:

28. method as claimed in claim 27 is characterized in that, at the described Report Type that is used for feeding back main transmission point RI, also comprises:

29. method as claimed in claim 27 is characterized in that, the described Report Type that is used to feed back main transmission point CQI and PMI specifically comprises:

Be used to feed back the Report Type of main transmission point subband CQI.

30. method as claimed in claim 27 is characterized in that, the described Report Type that is used to feed back non-main transmission point CQI and PMI specifically comprises:

31. method as claimed in claim 27 is characterized in that, described be used to feed back main transmission point based on the CQI of RI=1 hypothesis and the Report Type of PMI, specifically comprise:

32. as each described method of claim 27-31, it is characterized in that, the report cycle of described channel condition information with report the timing off-set amount to carry out semi-static control by high-level signaling, and described report cycle with report the timing off-set amount to carry out separate configurations.

33. a terminal equipment is characterized in that, comprises at least:

34. terminal equipment as claimed in claim 33 is characterized in that, the described Report Type that is used to feed back main transmission point RI is LTE/LTE-A Physical Uplink Control Channel PUCCH Report Type 3, Report Type 5 or Report Type 6.

35. terminal equipment as claimed in claim 33 is characterized in that, at the described Report Type that is used for feeding back main transmission point RI, also comprises:

36. terminal equipment as claimed in claim 35, it is characterized in that, the described Report Type that is used to feed back main transmission point RI is Report Type 3a, Report Type 5a or Report Type 6a, described Report Type 3a, be used to feed back main transmission point RI and the pairing CSI-RS numbering of main transmission point, described Report Type 5a, be used to feed back main transmission point RI, PMI and the pairing CSI-RS numbering of main transmission point, described Report Type 6a is used to feed back a main transmission point RI, precoding type indication PTI and the pairing CSI-RS numbering of main transmission point.

37. terminal equipment as claimed in claim 33 is characterized in that, the described Report Type that is used to feed back main transmission point CQI and PMI specifically comprises:

Be used to feed back the Report Type of main transmission point subband CQI.

38. terminal equipment as claimed in claim 37, it is characterized in that the described Report Type that is used to feed back main transmission point CQI and PMI is LTE/LTE-A PUCCH Report Type 2, Report Type 2a, Report Type 2b, Report Type 2c, Report Type 1 and/or Report Type 1a.

39. terminal equipment as claimed in claim 37 is characterized in that, the described Report Type that is used to feed back the Report Type of main transmission point broadband P MI and/or is used to feed back main transmission point broadband CQI and PMI also comprises:

40. terminal equipment as claimed in claim 39, it is characterized in that, a described Report Type that is used to feed back main transmission point broadband P MI is Report Type 2a-e, and described Report Type 2a-e is used to feed back main transmission point broadband the one PMI and the pairing CSI-RS numbering of main transmission point.

41. terminal equipment as claimed in claim 39, it is characterized in that, the described Report Type that is used to feed back main transmission point broadband CQI and PMI is Report Type 2-e, Report Type 2b-e, or Report Type 2c-e, described Report Type 2-e is used to feed back main transmission point broadband CQI and PMI, and the pairing CSI-RS numbering of main transmission point, described Report Type 2b-e is used to feed back main transmission point broadband CQI and broadband the 2nd PMI, and the pairing CSI-RS numbering of main transmission point, described Report Type 2c-e is used to feed back main transmission point broadband CQI, broadband the one PMI and broadband the 2nd PMI, and the pairing CSI-RS numbering of main transmission point.

42. terminal equipment as claimed in claim 37, it is characterized in that, the described Report Type that is used to feed back main transmission point subband CQI and PMI is Report Type 1a-e, and described Report Type 1a-e is used to feed back main transmission point subband CQI and the PMI information that does not comprise subband location index information.

43. terminal equipment as claimed in claim 37, it is characterized in that, a described Report Type that is used to feed back non-main transmission point subband CQI is Report Type 1-e, and described Report Type 1-e is used to feed back the main transmission point subband CQI information that does not comprise subband location index information.

44., it is characterized in that described main transmission point CQI and/or PMI are specially as each described terminal equipment in the claim 34 to 43:

45. terminal equipment as claimed in claim 33 is characterized in that, the described Report Type that is used to feed back non-main transmission point CQI and PMI specifically comprises:

46. terminal equipment as claimed in claim 45 is characterized in that, at the described Report Type that is used for feeding back non-main transmission point CQI and PMI, also comprises:

47. terminal equipment as claimed in claim 46 is characterized in that,

Described Report Type 2d is used to feed back the broadband CQI and the PMI based on the RI=1 hypothesis of non-main transmission point, and the broadband phase information of the main relatively transmission point of described non-main transmission point.

48. terminal equipment as claimed in claim 46 is characterized in that,

49. as claim 45 or 48 described terminal equipments, it is characterized in that,

Described Report Type 1b be used to feed back the non-main transmission point that do not comprise subband location index information based on the subband CQI of RI=1 hypothesis and PMI or feed back the subband phase information based on subband CQI and the PMI and the relative main transmission point of described non-main transmission point of RI=1 hypothesis of non-main transmission point, described subband CQI, PMI and/or the pairing subband of phase information position are pairing identical with reference to the frequency domain resource position with a main transmission subband CQI and/or the PMI information of the last feedback before.

50. terminal equipment as claimed in claim 45 is characterized in that, described Report Type 1b comprises subband location index information.

51. terminal equipment as claimed in claim 45, it is characterized in that, the information bit that the CQI information of each code word among Report Type 2d and/or the Report Type 1b is comprised is less than 4 bits and/or PMI information is selected from a codebook subset, and described codebook subset is set at non-main transmission point PMI feedback.

52. terminal equipment as claimed in claim 33 is characterized in that, described be used to feed back main transmission point based on the CQI of RI=1 hypothesis and the Report Type of PMI, specifically comprise:

53. terminal equipment as claimed in claim 52 is characterized in that, described Report Type 2e is used to feed back the broadband CQI and the PMI based on the RI=1 hypothesis of main transmission point, and the pairing CSI-RS numbering of main transmission point.

54. terminal equipment as claimed in claim 52, it is characterized in that, described Report Type 1c is used to feed back the subband CQI that does not comprise subband location index information and the PMI and/or the pairing CSI-RS numbering of main transmission point based on the RI=1 hypothesis of main transmission point, and described subband CQI and the pairing subband of PMI information position are pairing identical with reference to the frequency domain resource position with a main transmission subband CQI and/or the PMI information of the last feedback before.

55. terminal equipment as claimed in claim 52 is characterized in that, described Report Type 1c comprises subband location index information.

56. terminal equipment as claimed in claim 52 is characterized in that, described sending module, and the RI information that specifically is used for reporting in the last time is 1 o'clock, abandons reporting Report Type 2e and/or Report Type 1c.

57. as each described terminal equipment among claim 33-43,45-48, the 50-56, it is characterized in that, the report cycle of described channel condition information with report the timing off-set amount to carry out semi-static control by high-level signaling, and described report cycle with report the timing off-set amount to carry out separate configurations.

58. terminal equipment as claimed in claim 57 is characterized in that, described channel condition information reports the corresponding different Report Type of various combination of content, and the corresponding different priority of different Report Types; When according to the report cycle of each Report Type when reporting the timing off-set amount to determine between different Report Types, to bump, described sending module is used to select the Report Type of high priority to report.

59. a network equipment is characterized in that, comprises at least:

60. network equipment as claimed in claim 59 is characterized in that, at the described Report Type that is used for feeding back main transmission point RI, also comprises:

61. network equipment as claimed in claim 59 is characterized in that, the described Report Type that is used to feed back main transmission point CQI and PMI specifically comprises:

Be used to feed back the Report Type of main transmission point subband CQI.

62. network equipment as claimed in claim 59 is characterized in that, the described Report Type that is used to feed back non-main transmission point CQI and PMI specifically comprises:

63. network equipment as claimed in claim 62 is characterized in that, at the described Report Type that is used for feeding back non-main transmission point CQI and PMI, also comprises:

64. network equipment as claimed in claim 59 is characterized in that, described be used to feed back main transmission point based on the CQI of RI=1 hypothesis and the Report Type of PMI, specifically comprise:

65. as each described network equipment of claim 59-64, it is characterized in that, the report cycle of described channel condition information with report the timing off-set amount to carry out semi-static control by high-level signaling, and described report cycle with report the timing off-set amount to carry out separate configurations.