CN103546208A

CN103546208A - Method, equipment and system for transmitting aperiodic channel state information

Info

Publication number: CN103546208A
Application number: CN201210237958.3A
Authority: CN
Inventors: 陈文洪; 彭莹; 高秋彬
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2012-07-09
Filing date: 2012-07-09
Publication date: 2014-01-29
Anticipated expiration: 2032-07-09
Also published as: WO2014008833A1; CN103546208B

Abstract

The invention relates to the field of wireless communication, in particular to a method, equipment and a system for transmitting aperiodic channel state information, in order to solve the problem of high signaling feedback overhead in existing coordinated multipoint transmission. The method for transmitting the aperiodic channel state information (CSI) includes that a terminal determines CSI processes needing to be processed at this time from all CSI process sets configured by a base station for the terminal and informed to the terminal according to received instruction information sent by the base station; measurement is carried out according to each CSI process needing to be processed at this time to obtain corresponding CSI; at least one CSI is selected from all the CSI to serve as CSI report information which is sent to the base station. By the method, equipment and system, signaling feedback overhead of aperiodic CSI feedback is reduced, and gain of CoMP (coordinated multipoint transmission/reception) is further guaranteed.

Description

A kind of transmission method of aperiodic channel status information, equipment and system

Technical field

The present invention relates to wireless communication field, particularly a kind of transmission method of aperiodic channel status information, equipment and system.

Background technology

Multi-point cooperative transmission (Coordinated Multipoint Transmission/Reception, CoMP) technology refers to the cooperation between a plurality of transfer points separated on geographical position.In general, a plurality of transfer points can be the base stations of different districts, can be also a plurality of RRH that same cell base station is controlled.By the cooperation transmission between a plurality of 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/Cooperative 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 the interference between different transfer points.The interference of minizone is the principal element of restriction Cell Edge User terminal (UserEquipment, UE) performance, so cooperative scheduling is by reducing the interference of minizone, can improve the performance of cell edge UE.Referring to Fig. 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 a plurality of 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 (Multi-User Multiple Input Multiple Output, MU-MIMO) transmission of single community, collaborative wave beam forming is mainly processed and is realized by the interference inhibition of transmitting terminal.Therefore, the interference of other users being transmitted in order to suppress this user's transmission, need to obtain in base station side the descending channel information of 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.In order to realize dynamic transfer point, switch, base station need to obtain by feedback channel the channel information of a plurality of optional communities, or obtains the channel information of optimal transmission point.In associating delivery plan, a plurality of transfer points send data to UE simultaneously, to strengthen UE, receive signal.Referring to Fig. 2, three transfer points send data to a UE in identical resource, and UE receives the signal of a plurality of communities simultaneously.On the one hand, from the useful signal stack of a plurality of communities, can promote the signal quality of UE reception, on the other hand, reduce the interference that UE is subject to, thereby improve systematic function.This scheme requires UE to feed back the channel information of a plurality of communities, even also wants the relative channel information of minizone, thus guarantee a plurality of communities can combine dispatch, precoding and data transmission.

In long-term evolution upgrading (LTE-A) system, UE is according to information measurement reference signal (the Channel State Information-Reference Signal of base station configuration, CSI-RS) estimate base station to the channel condition information CSI of UE, and calculate channel quality indication (Channel Quality Indicator, CQI) information, order indication (Rank Indicator, RI) information and pre-coding matrix indication (Precoding Matrix Indicator, PMI) information feed back to base station; Base station can be passed through Downlink Control Information (Downlink Control Information, DCI) triggering UE and carry out reporting of CSI aperiodic; UE, after receiving the triggering command of base station transmission, feeds back the CSI measuring by Physical Uplink Shared Channel (Physical Uplink Shared CHannel, PUSCH).If cell configuration a plurality of descending carriers, base station also need to be in triggering command the channel information of which carrier wave of indication feedback.

In order to support multi-point cooperative transmission, UE need to measure respectively CSI for each transfer point, the NZP(Non-zero-power that this mainly relies on base station to configure) CSI-RS and interferometry resource (Interference Measurement Resource, IMR) realize.Wherein, NZP CSI-RS is for measuring the descending channel information of each transfer point, thus estimation RI, PMI and CQI; Interferometry resource is passed through ZP(Zero-power) CSI-RS configuration, for measuring other transfer points outside certain transfer point or certain transfer point set interfere information to this transfer point or this transfer point set, thereby estimate for CQI.

Conventionally the CSI that each transfer point need to be measured is one or more, and the CSI that each transfer point need to be measured determines according to the interferometry resource of a NZP CSI-RS corresponding to this transfer point and one or more measurement disturbance information.Each CSI is corresponding to a NZP CSI-RS and an interferometry resource, and the CSI (s) that the NZP CSI-RS of same transfer point measures has identical RI and PMI, and different CQI.For multi-point cooperative transmission, because UE need to measure respectively CSI for each transfer point, and therefore the CSI that each transfer point need to be measured may be for a plurality of,, UE need to measure than the more CSI of unicast, and UE need to report than the more CSI information of unicast by PUSCH; In addition, if UE has configured a plurality of carrier waves, and support CoMP on each carrier wave, UE needs to measure CSI corresponding to a plurality of transfer points on each carrier wave.

In sum, for multi-point cooperative transmission, owing to need to reporting CSI corresponding to each transfer point, easily cause the problem that feedback signaling expense is large, and the limited transmission capacity of PUSCH cannot be carried more CSI.

Summary of the invention

The embodiment of the present invention provides a kind of transmission method, equipment and system of aperiodic channel status information, the large problem of feedback signaling expense existing for solving existing multi-point cooperative transmission.

The embodiment of the present invention provides a kind of method that sends aperiodic channel status information CSI, comprising:

The indication information that terminal sends according to the base station receiving, is described terminal configuration all CSI process collection of notice to this terminal from described base station, determines that this needs CSI process to be processed;

Described terminal needs each CSI process to be processed to measure corresponding CSI according to this;

Described terminal selects at least one CSI as CSI reporting information from all CSI that measure, and sends described CSI reporting information to described base station;

Wherein, described in each, CSI process collection comprises at least one CSI process, at least comprises the metrical information of at least one CSI that need to measure that transfer point is corresponding described in each in CSI process.

The embodiment of the present invention provides a kind of method that receives aperiodic channel status information, it is characterized in that, the method comprises:

Base station notification terminal is all CSI process collection of its configuration, and described in each, CSI process collection comprises at least one CSI process, at least comprises the metrical information of at least one CSI that need to measure that transfer point is corresponding described in each in CSI process;

Described base station sends indication information to described terminal, the terminal shown in indication of take is also notified all CSI process collection to terminal according to described indication information from described base station as described terminal configuration, determine that this needs CSI process to be processed, according to this, need each CSI process to be processed to measure corresponding CSI, and from all CSI, select at least one CSI as CSI reporting information;

Described base station receives the CSI of described terminal to report, and carries out descending scheduling and transmission according to described CSI.

It is a kind of for sending the terminal of aperiodic channel status information CSI that the embodiment of the present invention provides, and comprising:

Determination module, for the indication information sending according to the base station receiving, is described terminal configuration all CSI process collection of notice to this terminal from described base station, determines that this needs CSI process to be processed;

Processing module, for needing each CSI process to be processed to measure corresponding CSI according to this;

Sending module, for selecting at least one CSI as CSI reporting information from all CSI, and sends described CSI reporting information to described base station;

It is a kind of for receiving the base station of aperiodic channel status information that the embodiment of the present invention provides, and comprising:

Notification module, the all CSI process collection that are its configuration for notification terminal, described in each, CSI process collection comprises at least one CSI process, at least comprises the metrical information of at least one CSI that need to measure that transfer point is corresponding described in each in CSI process;

Indication information sending module, for sending indication information to described terminal, reports to indicate described terminal to carry out aperiodic CSI;

Receiver module, for receiving the CSI of described terminal to report, and carries out descending scheduling and transmission according to described CSI.

The embodiment of the present invention provides a kind of transmission system of aperiodic channel status information, comprising:

All CSI process collection that base station is its configuration for notification terminal; To described terminal, send indication information, to indicate described terminal to carry out aperiodic CSI, report; And receive the CSI of described terminal to report, and carry out descending scheduling and transmission according to described CSI;

Terminal, for the indication information sending according to the base station receiving, all CSI process collection that are described terminal configuration, determines that this needs CSI process to be processed from described base station; According to this, need each CSI process to be processed to measure corresponding CSI; And from all CSI, select at least one CSI as CSI reporting information, and to described base station, send described CSI reporting information;

All CSI process collection of the indication information that embodiment of the present invention terminal sends according to the base station receiving and base station notice, determine that this needs CSI process to be processed; According to this, need each CSI process to be processed to measure corresponding CSI; From all CSI, select at least one CSI as reporting information, and to base station, send this reporting information; Thereby reduced the feedback signaling expense of CSI feedback aperiodic, and guaranteed the gain of CoMP.

Accompanying drawing explanation

Fig. 1 is the transfer point cooperative scheduling schematic diagram in background technology;

Fig. 2 is that the transfer point in background technology is combined transmission schematic diagram;

Fig. 3 is the method flow diagram that the embodiment of the present invention sends CSI aperiodic;

Fig. 4 is the method flow diagram that the embodiment of the present invention receives CSI aperiodic;

Fig. 5 is the transmission method flow chart of embodiment of the present invention the first CSI aperiodic;

Fig. 6 is the transmission method flow chart of embodiment of the present invention the second CSI aperiodic;

Fig. 7 is the transmission method flow chart of the embodiment of the present invention the third aperiodic of CSI;

Fig. 8 is that the embodiment of the present invention is for sending the structural representation of the terminal of CSI aperiodic;

Fig. 9 is that the embodiment of the present invention is for receiving the structural representation of the base station of CSI aperiodic;

Figure 10 is the structural representation of the transmission system of embodiment of the present invention CSI aperiodic.

Embodiment

In the embodiment of the present invention, in order to obtain the channel condition information of a plurality of transfer points, base station need to be at least one CSI process collection of terminal configuration, and all CSI process collection that are its configuration by notification terminals such as high-level signalings, wherein, CSI process collection comprises at least one CSI process, at least comprises the metrical information of at least one CSI that need to measure corresponding to transfer point in each CSI process;

It should be noted that, the metrical information of each CSI is to be that terminal measurement CSI is configured and notify this terminal by base station, the metrical information of the CSI that terminal need to be measured according to each, obtain corresponding CSI, the metrical information of each CSI can with a NZP CSI-RS and an interferometry resource dependency, wherein, interferometry resource configures by ZP CSI-RS;

CSI process in a CSI process collection can be for same transfer point (now the NZP CSI-RS in this CSI process collection be identical), also can be for different transfer point (now this CSI process collection comprises a plurality of different NZP CSI-RS).

Wherein, each CSI process collection that base station notification terminal is its configuration comprises following three kinds of modes:

First kind of way, base station are sent as all CSI process collection of its configuration to terminal;

The second way, base station are sent as index corresponding to each CSI process in each CSI process collection of its configuration to terminal;

Accordingly, after index corresponding to each CSI process of terminal in receiving each CSI process collection that base station sends, according to this index, determine each the CSI process in each CSI process collection;

Before base station adopts all CSI process collection of the manner notification terminal, need first all CSI processes and index corresponding to each CSI process to be notified to terminal;

Accordingly, all CSI processes that terminal can send base station and corresponding index stores thereof are in local data base; , after index corresponding to the CSI process of terminal in receiving each CSI process collection that base station sends, according to this index, from local data base, search corresponding CSI process, thereby determine the CSI process comprising in each CSI process collection.

The third mode, base station are sent as the bit sequence corresponding to each CSI process collection of its configuration to terminal, wherein, each bit in this bit sequence represents a CSI process, if certain bit value is 1, represent that this CSI process collection comprises the CSI process that this bit is corresponding, if certain bit value is 0, represent not comprise in this CSI process collection the CSI process that this bit is corresponding;

Accordingly, terminal, at the bit sequence of receiving that each CSI process collection is corresponding, determines according to this bit sequence the CSI process that this CSI process collection kind comprises

Accordingly, all CSI processes that terminal can send base station and corresponding index stores thereof are in local data base; Terminal is after bit sequence corresponding to each CSI process collection of receiving base station transmission, according to this bit sequence, determine index corresponding to CSI process comprising in this set, and from local data base, search corresponding CSI process according to this index, thereby determine the CSI process comprising in each CSI process collection.

Suppose that base station sends 5 CSI processes and index thereof to terminal, terminal by these 5 CSI processes and index stores thereof in local data base; If comprise CSI process 1 and CSI process 3 in the CSI process collection 1 that base station is this terminal configuration, base station can be by 5 bit sequences to terminal transmission CSI process collection 1 correspondence (as 10100, wherein, first bit identification CSI process 1 in this 5 Bit data, second bit identification CSI process 2, the like, " 1 " represents that this CSI process collection comprises the CSI process that this bit is corresponding, " 0 " represents not comprise in this CSI process collection the CSI process that this bit is corresponding);

Accordingly, terminal is after receiving the bit sequence of base station transmission, can determine index corresponding to CSI process comprising in this CSI process collection, according to definite index, from local data base, search corresponding CSI process, thereby determine the CSI process comprising in each CSI process collection.

When configuration CSI process collection, can, for a CSI process collection of a transfer point configuration, also can configure a CSI process collection for different transfer points; If terminal has activated a plurality of carrier waves, and this terminal is supported multi-point cooperative transmission on partly or entirely exciting carrier wave, when base station is terminal configuration CSI process collection, can configure respectively CSI process collection for all carrier waves of the support multi-point cooperative transmission of this terminal; Base station can also configure respectively CSI process collection for different subframe set, wherein, each subframe set comprises at least one subframe, and corresponding at least one the CSI process collection of each subframe set, subframe set can be that base station is terminal configuration, can be also that both sides arrange.

Below in conjunction with Figure of description, the embodiment of the present invention is described in further detail.

Referring to Fig. 3, the embodiment of the present invention sends the method for aperiodic channel status information, comprises the following steps:

The indication information that step 31, terminal send according to the base station receiving, is this terminal configuration all CSI process collection of notice to this terminal from base station, determines that this needs CSI process to be processed;

Wherein, in each CSI process collection, comprise at least one CSI process, in each CSI process, at least comprise the metrical information of at least one CSI that need to measure that transfer point is corresponding;

Step 32, terminal need each CSI process to be processed to measure corresponding CSI according to this;

Step 33, terminal select at least one CSI as reporting information from all CSI that measure, and to base station, send this reporting information.

Preferably, reporting information also comprises that every CSI process corresponding to CSI needs the index information in CSI process to be processed at this, or every CSI process corresponding to CSI needs the index information in all CSI processes to be processed on the carrier wave at its place.

In force, the indication information that the base station that in step 31, terminal receives sends comprises:

The first selection strategy, is used to indicate terminal according to the instruction content of indication information, determines that this needs CSI process to be processed;

The second selection strategy, be used to indicate terminal according to the CSI process collection of making an appointment or the CSI process collection corresponding with the carrier set of making an appointment, determine that this needs CSI process to be processed, wherein, carrier set comprises at least one carrier wave of terminal configuration, and corresponding at least one the CSI process collection of each carrier wave in each carrier set.

Concrete, this indication information can take 1 bit or 2 bits or 3 bits.Illustrate below:

For the first selection strategy, base station can adopt the indication information of 2 bits or 3 bits according to the first selection strategy, to determine that this needs CSI process to be processed with indicating terminal;

The instruction content of the indication information that wherein, base station sends includes but not limited to a kind of in following:

Interferometry resource and the carrier set index of the transfer point of CSI process collection index, setting, the NZP CSI-RS of setting, setting.

The attribute information of indication information indication being divided into following three kinds of situations below describes.

The first situation: indication information comprises that the instruction content of this first selection strategy and indication information is CSI process collection index;

Suppose base station three the CSI process collection that have been terminal configuration, be respectively CSI process collection 1, CSI process collection 2 and CSI process collection 3, base station adopts the indication information indication CSI process collection index of 2 bits, as shown in table 2:

CSI triggers signaling	Instruction content
		00	Not triggering aperiodic CSI reports
01	CSI aperiodic that triggers the CSI process collection 1 of high-rise configuration reports
		10	CSI aperiodic that triggers the CSI process collection 2 of high-rise configuration reports
11	CSI aperiodic that triggers the CSI process collection 3 of high-rise configuration reports

Table 2

Certainly, the indication information that base station also can be by sending 3 bits, to indicate different CSI process collection index, will not enumerate herein.

If the instruction content of indication information indication is CSI process collection index, in step 31, terminal determines that this needs CSI process to be processed, comprising:

Terminal is determined the CSI process collection corresponding with CSI process collection index from pre-configured CSI process collection, and all CSI processes corresponding in definite CSI process collection are needed to CSI process to be processed for this.

The second situation: indication information comprises transfer point or NZP CSI-RS or the interferometry resource that the instruction content of this first selection strategy and indication information is setting;

Suppose base station two the CSI process collection that have been terminal configuration, be respectively CSI process collection 1 and CSI process collection 2, to be the NZP CSI-RS that sets describe as example the attribute information of the indication information of take indication, and base station adopts the indication information indication CSI process collection index of 2 bits, as shown in table 3:

CSI triggers signaling	Instruction content
		00	Not triggering aperiodic CSI reports
01	Triggering is carried out aperiodic CSI to the NZP CSI-RS of agreement and is reported
		10	CSI aperiodic that triggers the CSI process collection 1 of high-rise configuration reports
11	CSI aperiodic that triggers the CSI process collection 2 of high-rise configuration reports

Table 3

Wherein, if the transfer point of the instruction content of indication information for setting, the instruction content of indication information " 01 " can be " trigger the transfer point of agreement is carried out to aperiodic CSI report ", and this needs all CSI processes corresponding to transfer point of CSI process to be processed for setting; If the interferometry resource of the instruction content of indication information for setting, the instruction content of indication information " 01 " can be " trigger the interferometry resource of agreement is carried out to aperiodic CSI report ", this to need CSI process to be processed be all CSI processes corresponding with the interferometry resource of setting.

Certainly, the instruction content of the indication information of 2 bits that send can also be other, for example " 01 " indicates this to need all CSI processes corresponding to transfer point of CSI process to be processed for setting, " 10 " indicate this to need CSI process to be processed for all CSI processes corresponding to the NZP CSI-RS with setting, and this need CSI process to be processed be all CSI processes corresponding with the interferometry resource of setting for " 11 " indicating terminal; Will not enumerate herein.

Certainly, base station also can adopt the first selection strategy to determine that this needs CSI process to be processed, will not enumerate herein with indicating terminal by sending the indication information of 3 bits.

If transfer point or NZP CSI-RS or the interferometry resource of the instruction content of indication information for setting, in step 31, terminal determines that this needs CSI process to be processed, comprising:

Terminal determines that from pre-configured CSI process collection all CSI processes corresponding with the transfer point of setting or NZP CSI-RS or interferometry resource are as these need CSI process to be processed.

The third situation: if terminal configuration a plurality of carrier waves, and support multi-point cooperative transmission on each carrier wave, indication information comprises that the instruction content of this first selection strategy and indication information is carrier set index;

Three carrier waves of having supposed terminal configuration, be carrier wave 1, carrier wave 2 and carrier wave 3, base station be terminal configuration two for carrier set that aperiodic, CSI reported, be that carrier set 1(comprises carrier wave 1 and carrier wave 2) and carrier set 2(carrier wave 3), and base station is that each carrier wave in each carrier set configures respectively at least one CSI process collection, base station adopts the indication information indication carrier wave index of set of 2 bits, as shown in table 4:

CSI triggers signaling	Instruction content
		00	Not triggering aperiodic CSI reports
01	CSI aperiodic that triggers current carrier wave reports
		10	CSI aperiodic that triggers the carrier set 1 of high-rise configuration reports
11	CSI aperiodic that triggers the carrier set 2 of high-rise configuration reports

Table 4

Certainly, the indication information that base station also can be by sending 3 bits, to indicate different carrier set index, will not enumerate herein.

For the second selection strategy, base station can adopt the indication information of 1 bit; For example, base station sends " 0 " indicating terminal to terminal and does not carry out aperiodic CSI and report; Sending CSI process collection according to a preconcerted arrangement of " 1 " indicating terminal or carrier set carries out aperiodic CSI and reports.

Accordingly, terminal CSI process collection according to a preconcerted arrangement determines that this needs CSI process to be processed to comprise:

Terminal needs CSI process to be processed using all CSI processes corresponding in the CSI process collection of agreement as this.

Accordingly, terminal carrier set according to a preconcerted arrangement determines that this needs CSI process to be processed to comprise:

Terminal needs CSI process to be processed using all CSI processes corresponding in the CSI process collection that in the carrier set of agreement, each carrier wave is corresponding as this.

Further, before base station sends indication information to terminal, base station need to will be notified to terminal by high-level signaling for all CSI process collection of this terminal configuration.

In force, in step 33, terminal selects at least one CSI as reporting information from all CSI according to following manner:

Mode one, terminal need different interferometry resources corresponding to CSI process to be processed according to this, from many CSI that measure, according to default selection strategy, select at least one CSI corresponding at least one interferometry resource as CSI reporting information;

Concrete, terminal can be divided into groups to many CSI that measure according to different interferometry resources, and the identical CSI of corresponding interferometry resource is divided into one group; And according to default selection strategy, from many groups CSI, select one group of CSI as reporting information.

Mode two, terminal need different NZP CSI-RS corresponding to CSI process to be processed according to this, from many CSI that measure, according to default selection strategy, select at least one CSI that at least one NZP CSI-RS is corresponding as CSI reporting information;

Concrete, terminal can be divided into groups to many CSI that measure according to different NZP CSI-RS, and the identical CSI of corresponding NZP CSI-RS is divided into one group; And according to default selection strategy, from many groups CSI, select one group of CSI as reporting information.

Mode three, terminal need transmission mechanism corresponding to CSI process to be processed according to this, from many CSI that measure, according to default selection strategy, select at least one CSI that at least one transmission mechanism is corresponding as CSI reporting information;

Concrete, terminal can be divided into groups to a plurality of CSI that measure according to transmission mechanism, and the identical CSI of corresponding transmission mechanism is divided into one group; And according to default selection strategy, from many groups CSI, select one group of CSI as CSI reporting information; Wherein, transmission mechanism corresponding to each CSI process notified to terminal by base station, and transmission mechanism includes but not limited to following one or more: dynamic transmission point switches transmission, 2 joint transmission, joint transmission, unicast, 2 CS/CB and 3 CS/CB at 3.

Mode four, terminal need carrier wave corresponding to CSI process to be processed according to this, in many CSI that measure, according to default selection strategy, select at least one CSI corresponding at least one carrier wave difference as CSI reporting information from all carrier waves;

Mode five, terminal select at least one CSI as CSI reporting information according to default selection strategy from all many CSI that measure.

Preferably, default selection strategy comprises one of following or combination:

Mode A, the maximum principle of information capacity;

Concrete, from many groups CSI, select one group of CSI of information capacity maximum as CSI reporting information; Or from all CSI, select the CSI of information capacity maximum as CSI reporting information.

Mode B, letter are dried than (Signal-to-Interference and Noise Ratio, SINR) maximum principle;

Concrete, terminal selects one group of CSI of SINR maximum as CSI reporting information from many groups CSI; Or from all CSI, select the CSI of SINR maximum as CSI reporting information;

Mode C, higher than the information capacity thresholding principle of setting;

Concrete, terminal selects one group of CSI of information capacity thresholding that information capacity is greater than setting as CSI reporting information from many groups CSI; Or from all CSI, select to be greater than the CSI of information capacity thresholding of setting as CSI reporting information;

Mode D, higher than the principle of the SINR thresholding of setting;

Concrete, terminal selects one group of CSI of SINR thresholding that SINR is greater than setting as CSI reporting information from many groups CSI; Or from all CSI, select to be greater than the CSI of SINR thresholding of setting as CSI reporting information.

It should be noted that, if terminal configuration a plurality of carrier waves, and on a plurality of carrier waves, all support a plurality of CSI processes, because system is not supported to select across carrier wave, therefore UE need to select respectively at least one CSI as reporting information corresponding to this carrier wave for the CSI measuring on each carrier wave, and reports successively.

It should be noted that, if it is the CSI process collection that different subframe set configures respectively that terminal receives base station, terminal should be carried out respectively CSI measurement based on CSI process collection corresponding to different subframe set, and select at least one CSI as reporting information corresponding to this subframe set in the CSI measuring from each subframe set respectively, and report successively; Wherein, subframe set is pre-configured by base station, and each subframe set comprises at least one subframe.

Referring to Fig. 4, the embodiment of the present invention receives the method for CSI aperiodic, comprises the following steps:

All CSI process collection that step 41, base station notification terminal are its configuration, comprise at least one CSI process in each CSI process collection, at least comprise the metrical information of at least one CSI that need to measure that transfer point is corresponding in each CSI process;

Preferably, if terminal configuration a plurality of carrier waves, and this terminal is supported multi-point cooperative transmission on each carrier wave; Each carrier wave that base station is terminal configures respectively at least one CSI process collection; Or the partial carrier wave that base station is terminal configures respectively at least one CSI process collection, as being only the main carrier configuration CSI process collection of terminal.

In force, all CSI process collection that in step 41, base station notification terminal is its configuration comprise following three kinds of modes:

Base station is sent as all CSI process collection of its configuration to terminal; Or

Base station is sent as index corresponding to CSI process in each CSI process collection of its configuration to terminal, so that terminal is determined corresponding CSI process according to index corresponding to each CSI process; Or

Base station is sent as the bit sequence corresponding to each CSI process collection of its configuration to terminal, so that terminal determines according to this bit sequence the CSI process that corresponding CSI process collection comprises.

Step 42, base station send indication information to terminal, carry out aperiodic CSI report with indicating terminal;

Wherein, the indication information that base station sends to terminal comprises:

The first selection strategy, is used to indicate terminal according to the instruction content of indication information, determines that this needs CSI process to be processed; Or

The second selection strategy, be used to indicate the terminal CSI process collection that selection is made an appointment in all CSI process collection of notice or the CSI process collection corresponding with the carrier set of making an appointment, determine that this needs CSI process to be processed, wherein, carrier set comprises the carrier wave of at least one terminal configuration, and corresponding at least one the CSI process collection of each carrier wave in each carrier set.

Wherein, the instruction content of indication information can be the transfer point of CSI process collection index, setting, the interferometry resource of the NZP CSI-RS of setting, setting or carrier set index;

Terminal is after receiving the indication information of base station transmission, according to indication information, from base station, be all CSI process collection of its configuration notice, determine that this needs CSI process to be processed, according to this, need each CSI process to be processed to measure corresponding CSI, and from all CSI, select at least one CSI as CSI reporting information.

Descending scheduling and transmission are carried out according to the CSI of terminal to report in step 43, base station.

It should be noted that, in step 41, the mode that reports that aperiodic, CSI reported can also be carried out by downlink signaling notification terminal in base station, and this reports mode to comprise: notification terminal reports all aperiodics of CSI, or notification terminal reports part CSI aperiodic.

If base station notification terminal report mode for reporting part CSI aperiodic, can be by this CSI that need to report of step 42 indicating terminal.

The mutual implementation of base station and end side is as follows:

First, base station is at least one CSI process collection of each terminal configuration by high-level signaling;

Accordingly, terminal receives at least one CSI process collection of base station indication;

Then, base station is by CSI triggered signaling and sent indication information aperiodic in DCI, carries out aperiodic CSI report with indicating terminal;

Accordingly, terminal receives the indication information that base station sends, and determines that according to indication information this needs CSI process to be processed, and the CSI process based on definite is measured; Terminal selects at least one CSI as reporting information from all CSI that measure, and reports; Wherein, this reporting information also comprises CSI process that every CSI the is corresponding index information in all definite CSI processes;

Finally, the descending channel information of corresponding transfer point and/or carrier wave, according to the reporting information of terminal, is determined in base station, thereby carries out corresponding descending scheduling and transmission.

In mutual implementation, the specific implementation of base station and terminal can be described the method for base station and end side respectively referring to above-mentioned, repeats no more here.

Below in conjunction with following three specific embodiments, the transmission method of embodiment of the present invention CSI aperiodic is elaborated.

Embodiment mono-: referring to Fig. 5, the transmission method of the present embodiment CSI aperiodic comprises the following steps:

Step 51, base station are that UE configures three for the CSI process collection that aperiodic, CSI reported by high-level signaling, and wherein, three CSI process collection are corresponding respectively: the switching of dynamic transmission point, 2 joint transmission and three kinds of transmission mechanisms of 3 joint transmission;

Concrete, all CSI processes that need measurement of UE are prenoticed in base station, and in each CSI process collection, adopt bitmap mode to indicate the CSI process comprising in this CSI process collection.

Step 52, base station trigger signalings indication UE by 2 bit CSI aperiodic in DCI and carry out aperiodic CSI and report, and by 3 triggering states corresponding to this 2 Bit data, indicate CSI process collection that this aperiodic, CSI the reported required measurement index in three pre-configured CSI process collection; Wherein, the instruction content of 2 Bit datas is as shown in table 2.

Step 53, UE receive three CSI process collection that base station is its configuration;

Step 54, UE receive the 2 bit CSI aperiodic triggering signalings that base station sends, and trigger the CSI process collection index of signaling indication according to this, from above-mentioned three CSI process collection, determine CSI process collection corresponding to this CSI process collection index, all CSI processes in definite CSI process collection are needed to CSI process to be processed as this; And respectively every CSI process corresponding in definite CSI process collection is measured, obtain CSI corresponding to each CSI process;

For example, if 2 Bit datas that UE receives are " 01 ", corresponding instruction content reports for triggering CSI aperiodic of the CSI process collection 1 of high-rise configuration, be that in the UE CSI process collection that is 1 using CSI process collection index, corresponding all CSI processes need CSI process to be processed as this, and respectively every CSI process in CSI process collection 1 is measured, obtain every CSI that CSI process is corresponding.

Step 55, UE, from all CSI that measure, divide into groups to the CSI measuring according to the interferometry resource of using in measuring process, and CSI corresponding to same interferometry resource is divided into one group; And in the many groups CSI determining one group of CSI of information capacity maximum as reporting information;

For example, if the NZP CSI-RS that comprises 3 transfer points in CSI process collection 1 and separately different interferometry resource are (wherein, each interferometry resource is for measuring the interference to this transfer point of other transfer points outside transfer point corresponding to this interferometry resource), UE, respectively according to every couple of NZP CSI-RS and interferometry resource, measures 3 CSI; 3 CSI that UE measures this are divided into 3 groups, and the information capacity that relatively these 3 groups of CSI are corresponding size, using one group of CSI of information capacity maximum as reporting information, and the index information of CSI process corresponding to every CSI in definite reporting information and this reporting information in these 3 CSI processes reports base station.

The CSI that step 56, base station report according to UE with and the index information of corresponding CSI process, obtain the descending channel information of the corresponding transfer point of this CSI, thereby carry out corresponding descending scheduling and transmission.

Implement two: referring to Fig. 6, the transmission method of the present embodiment CSI aperiodic comprises the following steps:

Step 61, base station are two of UE configurations for CSI process collection that aperiodic, CSI reported by high-level signaling, wherein, in two CSI process collection, comprise respectively CSI process corresponding to different transfer points, i.e. NZP CSI-RS difference corresponding to each CSI process collection;

Concrete, all need of UE CSI process to be processed is prenoticed in base station, and in each CSI process collection, adopts bitmap mode to indicate the CSI process comprising in each CSI process collection.

Step 62, base station trigger signalings by 2 bit CSI aperiodic in DCI and trigger UE and carry out aperiodic CSI and report, and by triggering three triggering states in bit, indicate respectively this to need CSI process collection index corresponding to CSI process to be processed, and indication UE adopt the CSI process corresponding to NZP CSI-RS of agreement to report.The instruction content that these 2 bit CSI aperiodic trigger signaling is as shown in table 3.

Step 63, UE receive two CSI process collection that base station is its configuration;

2 bit CSI aperiodic that step 64, UE receive base station trigger after signaling, trigger the information of the CSI process collection of signaling indication according to this 2 bit CSI aperiodic, determine that this needs CSI process to be processed; Respectively definite CSI process is measured;

For example, it is " 01 " that this 2 bit CSI aperiodic triggers signaling, indicates UE that all CSI processes corresponding to the NZP CSI-RS arranging in CSI process collection are needed to CSI process to be processed and measure respectively as this.

Step 65, UE divide into groups to the CSI measuring according to transmission mechanism, and the identical CSI of corresponding transmission mechanism is divided into one group, and select one group of optimum CSI as reporting information from each group CSI;

For example, this that determine needs the NZP CSI-RS and 3 the different interferometry resources that in CSI process to be processed, comprise agreement, corresponding to 3 different transmission mechanisms (unicast, 2 CS/CB, 3 CS/CB), UE will measure 3 CSI according to transmission mechanism and be divided into 3 groups; The UE information capacity size that relatively these 3 CSI are corresponding, needs the index in 3 CSI processes to be processed to report base station at this that determine CSI of information capacity maximum and corresponding CSI process thereof.

Step 66, base station according to the CSI reporting with and the index of corresponding CSI process, know the descending channel information of the corresponding transfer point of CSI reporting, thereby carry out corresponding descending scheduling and transmission.

Implement three: referring to Fig. 7, the transmission method of the present embodiment CSI aperiodic comprises the following steps:

Step 71, base station are two of UE configurations for carrier set that aperiodic, CSI reported by high-level signaling;

Concrete, UE indicates the carrier wave activating in each carrier set by the mode of bitmap; Wherein, each bit in Bitmap represents a carrier wave, if a bit value is 1, the carrier wave of its representative is activation carrier wave, otherwise is inactive carrier wave.

Step 72, base station trigger signalings indication UE by 2 bit CSI aperiodic in DCI and carry out aperiodic CSI and report, and by three triggering states of 2 bit CSI aperiodic triggering signalings, indicate this aperiodic CSI to report carrier set used carrier set index in two pre-configured carrier set, or indication UE adopt the carrier set (being current carrier wave) of agreement to carry out aperiodic CSI to report.Wherein, the instruction content of 2 bit CSI aperiodic triggering signalings is as shown in table 4.

Step 73, UE receive two of base station indication for carrier set that aperiodic, CSI reported;

2 bit CSI aperiodic that step 74, UE receive base station trigger after signaling, information acquisition this aperiodic of the CSI that triggers signaling indication according to this 2 bit CSI aperiodic reports corresponding carrier set, using the CSI process collection that in definite carrier set, each carrier wave is corresponding as this aperiodic CSI report required CSI process to be processed, and need CSI process to be processed to measure respectively based on this of determining on each carrier wave;

For example, it is " 10 " that 2 bit CSI aperiodic trigger signaling, indicates UE to carry out respectively CSI measurement to all CSI process collection in the carrier set 1 of high level configuration.

In step 75, the UE CSI that each carrier wave measures from carrier set 1, being respectively each carrier wave selects at least one CSI as the reporting information of this carrier wave, the reporting information of carrier set 1 correspondence is reported to base station successively, and the index of CSI process corresponding to reporting information corresponding to each carrier wave is also reported to base station;

For example, carrier set 1 comprises carrier wave 1 and carrier wave 2, and UE proceeds as follows respectively for carrier wave 1 and carrier wave 2:

UE divides into groups to the CSI measuring on current carrier wave according to the interferometry resource of using, and the identical CSI of the interferometry resource of use is divided into one group;

UE selects one group of optimum CSI as the reporting information of current carrier wave according to the maximum principle of information capacity from many groups CSI;

UE by the reporting information of current carrier wave with and corresponding CSI process corresponding index in the CSI of current carrier wave process collection feed back to base station.

Concrete, UE reports reporting information and the corresponding index thereof of carrier wave 1 and carrier wave 2 successively.

The index of the CSI process of the CSI that step 76, base station report according to UE and correspondence thereof, obtains the descending channel information of the corresponding transfer point of the CSI reporting and carrier wave, thereby carries out corresponding descending scheduling and transmission.

Based on same inventive concept, in the embodiment of the present invention, also provide a kind of for sending the terminal of aperiodic channel status information, because the principle that this terminal is dealt with problems is similar to the method for above-mentioned transmission aperiodic channel status information, therefore the enforcement of this terminal can, referring to the enforcement of method, repeat part and repeat no more.

Referring to Fig. 8, the embodiment of the present invention, for sending the terminal of aperiodic channel status information CSI, comprising:

Determination module 81, for the indication information sending according to the base station receiving, is this terminal configuration all CSI process collection of notice to this terminal from base station, determines that this needs CSI process to be processed;

Processing module 82, for needing each CSI process to be processed to measure corresponding CSI according to this;

Sending module 83, for selecting at least one CSI as reporting information from all CSI, and sends reporting information to base station;

Wherein, in each CSI process collection, comprise at least one CSI process, in each CSI process, at least comprise the metrical information of at least one CSI that need to measure that transfer point is corresponding.

Preferably, reporting information also comprises: every CSI corresponding CSI process is being determined that this needs the index information in all CSI processes to be processed, or every CSI process corresponding to CSI needs the index information in all CSI processes to be processed on the carrier wave at its place.

Preferably, base station sends to the indication information of terminal to comprise:

The second selection strategy, be used to indicate the terminal CSI process collection that selection is made an appointment in all CSI process collection of notice or the CSI process collection corresponding with the carrier set of making an appointment, determine that this needs CSI process to be processed, wherein, carrier set comprises at least one carrier wave of terminal configuration, and corresponding at least one the CSI process collection of each carrier wave in each carrier set.

Preferably, determination module 81 specifically for:

When indication information comprises the first selection strategy, and when the instruction content of this indication information is CSI process collection index, from all CSI process collection of notice, determine the CSI process collection corresponding with CSI process collection index, and all CSI processes corresponding in definite CSI process collection are needed to CSI process to be processed for this;

When indication information comprises the first selection strategy, and the instruction content of this indication information for set transfer point time, from all CSI process collection of notice, determine that all CSI processes corresponding to transfer point need CSI process to be processed as this;

When indication information comprises the first selection strategy, and the instruction content of this indication information is while being NZP CSI-RS, determines that all CSI processes corresponding with NZP CSI-RS are as these need CSI process to be processed from all CSI process collection of notice;

When indication information comprises the first selection strategy, and the instruction content of this indication information is while being interferometry resource, determines that all CSI processes corresponding with interferometry resource are as these need CSI process to be processed from all CSI process collection of notice;

When indication information comprises the first selection strategy, and when the instruction content of this indication information is carrier set index, from the carrier set of base station notice, determine the carrier set corresponding with carrier set index, and all CSI processes corresponding in CSI process collection corresponding to each carrier wave in definite carrier set are needed to CSI process to be processed as this.

Preferably, determination module 81 specifically for:

When described indication information comprises described the second selection strategy, all CSI processes corresponding in the CSI process collection of making an appointment are needed to CSI process to be processed as this; Or

All CSI processes corresponding in the CSI process collection that in the carrier set of making an appointment, each carrier wave is corresponding are needed to CSI process to be processed as this.

If base station is different subframe set, configure respectively CSI process collection, subframe set comprises at least one subframe, and corresponding at least one CSI process collection of subframe set described in each;

For each subframe set, determination module 81 also for: this needs CSI process to be processed according to described indication information, to determine CSI process collection corresponding to this subframe set; Processing module 82 also for: according to this subframe set, this needs each CSI process to be processed measure corresponding CSI; And sending module 83 also for: from all CSI corresponding to this subframe set that measure, select at least one CSI as the CSI reporting information of this subframe set.

Preferably, sending module 83 specifically for:

According to this, need different interferometry resources corresponding to CSI process to be processed, from many CSI that measure, according to default selection strategy, select at least one CSI corresponding at least one interferometry resource as CSI reporting information; Or,

According to this, need different NZP CSI-RS corresponding to CSI process to be processed, from many CSI that measure, according to default selection strategy, select at least one CSI that at least one NZP CSI-RS is corresponding as CSI reporting information; Or,

According to this, need transmission mechanism corresponding to CSI process to be processed, from many CSI that measure, according to default selection strategy, select at least one CSI that at least one transmission mechanism is corresponding as CSI reporting information;

According to this, need carrier wave corresponding to CSI process to be processed, in many CSI that measure from all carrier waves, according to default selection strategy, select at least one CSI corresponding at least one carrier wave difference as CSI reporting information;

From all many CSI that measure, according to default selection strategy, select at least one CSI as CSI reporting information.

The maximum principle of information capacity;

The maximum principle of Signal to Interference plus Noise Ratio SINR;

Higher than the information capacity thresholding principle of setting; And

Higher than the SINR thresholding principle of setting.

Based on same inventive concept, in the embodiment of the present invention, also provide a kind of for receiving the base station of aperiodic channel status information, because the principle of dealing with problems in this base station is similar to the method for above-mentioned reception aperiodic channel status information, therefore the enforcement of this base station can, referring to the enforcement of method, repeat part and repeat no more.

Referring to Fig. 9, the embodiment of the present invention, for receiving the base station of aperiodic channel status information, comprising:

All CSI process collection that notification module 91 is its configuration for notification terminal, comprise at least one CSI process in each CSI process collection, at least comprise the metrical information of at least one CSI that need to measure that transfer point is corresponding in each CSI process;

Indication information sending module 92, for sending indication information to terminal, take and indicate described terminal from described base station as this terminal configuration, also to notify all CSI process collection to this terminal according to described indication information, determine that this needs CSI process to be processed, according to this, need each CSI process to be processed to measure corresponding CSI, and from all CSI, select at least one CSI as CSI reporting information;

Receiver module 93, for receiving the CSI of this terminal to report, and carries out descending scheduling and transmission according to CSI.

Preferably, indication information comprises:

Wherein, when indication information comprises the first selection strategy, the instruction content of indication information can be the transfer point of CSI process collection index, setting, the interferometry resource of the NZP CSI-RS of setting, setting or carrier set index.

Preferably, notification module 91 specifically for:

To terminal, be sent as all CSI process collection of its configuration; Or

To terminal, be sent as index corresponding to CSI process in each CSI process collection of its configuration, so that terminal is determined corresponding CSI process according to index corresponding to CSI process; Or

To terminal, be sent as the bit sequence corresponding to each CSI process collection of its configuration, so that terminal determines according to bit sequence the CSI process that corresponding CSI process collection comprises.

Preferably, notification module 91 also for:

If terminal has activated a plurality of carrier waves, and terminal supports multi-point cooperative transmission on the carrier wave partly or entirely having activated, for all carrier waves of the support multi-point cooperative transmission of terminal configure respectively at least one CSI process collection.

Preferably, notification module 91 also for:

For different subframe set configures respectively CSI process collection, wherein, each subframe set comprises at least one subframe, and corresponding at least one the CSI process collection of each subframe set, wherein, subframe set be base station be terminal configuration or agreement by both party.

Consult Figure 10, the transmission system of embodiment of the present invention aperiodic channel status information, comprising:

All CSI process collection that base station 10 is its configuration for notification terminal; To terminal, send indication information, with indicating terminal, carry out aperiodic CSI and report; And the CSI that reports of receiving terminal, and carry out descending scheduling and transmission according to CSI;

Terminal 20, for the indication information sending according to the base station receiving, all CSI process collection that are terminal configuration, determines that this needs CSI process to be processed from base station; According to this, need each CSI process to be processed to measure corresponding CSI; And select at least one CSI as reporting information, and send reporting information to base station from all CSI that measure;

The enforcement of the method that in embodiment of the present invention transmission system, the enforcement of base station 10 can be shown in Figure 4, the enforcement of the method that in transmission system, the enforcement of terminal 20 can be shown in Figure 3 repeats no more herein.

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 modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.

All CSI process collection of the indication information that embodiment of the present invention terminal sends according to the base station receiving and base station notice, determine that this needs CSI process to be processed; According to this, need each CSI process to be processed to measure corresponding CSI; From all CSI, select at least one CSI as CSI reporting information, and to base station, send this reporting information; Thereby reduced the feedback signaling expense of CSI feedback aperiodic, and guaranteed the gain of CoMP, the embodiment of the present invention can also support to report CSI corresponding to CoMP on a plurality of carrier waves simultaneously, to support CoMP on a plurality of carrier waves.

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 within of the present invention these are revised and 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

1. a method that sends aperiodic channel status information CSI, is characterized in that, the method comprises:

Described terminal selects at least one CSI as CSI reporting information from all CSI, and to described base station, sends described CSI reporting information;

Wherein, described in each, in CSI process collection, comprise at least one CSI process, described in each, in CSI process, at least comprise the metrical information of at least one CSI that need to measure that transfer point is corresponding.

2. the method for claim 1, is characterized in that, described terminal also comprises before receiving the indication information of base station transmission:

Described base station is sent as all CSI process collection of its configuration to described terminal; Or

Described base station is sent as index corresponding to CSI process in each CSI process collection of its configuration to described terminal, so that described terminal is determined corresponding CSI process according to index corresponding to described CSI process; Or

Described base station is sent as the bit sequence corresponding to each CSI process collection of its configuration to described terminal, so that described terminal determines according to described bit sequence the CSI process that corresponding CSI process collection comprises.

3. the method for claim 1, is characterized in that, described indication information comprises:

The first selection strategy, is used to indicate terminal according to the instruction content of described indication information, determines that this needs CSI process to be processed; Or

The second selection strategy, be used to indicate the terminal CSI process collection that selection is made an appointment in all CSI process collection of notice or the CSI process collection corresponding with the carrier set of making an appointment, determine that this needs CSI process to be processed, wherein, described carrier set comprises at least one carrier wave of described terminal configuration, and corresponding at least one CSI process collection of the carrier wave of each in carrier set described in each.

4. method as claimed in claim 3, is characterized in that, when described indication information comprises described the first selection strategy, and the instruction content of described indication information is while being CSI process collection index, and described terminal determines that this needs CSI process to be processed to comprise:

Described terminal is determined the CSI process collection corresponding with described CSI process collection index from all CSI process collection of notice, and all CSI processes that comprise in definite CSI process collection are needed to CSI process to be processed for this;

When described indication information comprises described the first selection strategy, and the instruction content of described indication information for set transfer point time, described terminal determines that this needs CSI process to be processed to comprise:

Described terminal determines that from all CSI process collection of notice all CSI processes corresponding to the transfer point of described setting need CSI process to be processed as this;

When described indication information comprises described the first selection strategy, and the instruction content of described indication information is while being non-zero power channel state information reference signals NZP CSI-RS, and described terminal determines that this needs CSI process to be processed to comprise:

Described terminal determines that from all CSI process collection of notice all CSI processes corresponding with described NZP CSI-RS need CSI process to be processed as this;

When described indication information comprises described the first selection strategy, and the instruction content of described indication information is while being interferometry resource, and described terminal determines that this needs CSI process to be processed to comprise:

Described terminal determines that from all CSI process collection of notice all CSI processes corresponding with described interferometry resource need CSI process to be processed as this;

When described indication information comprises described the first selection strategy, and the instruction content of described indication information is while being carrier set index, and described terminal determines that this needs CSI process to be processed to comprise:

Described terminal is determined the carrier set corresponding with described carrier set index from the carrier set of described base station notice, and all CSI processes that comprise in CSI process collection corresponding to each carrier wave in definite carrier set are needed to CSI process to be processed as this.

5. method as claimed in claim 3, is characterized in that, when described indication information comprises described the second selection strategy, described terminal determines that this needs CSI process to be processed to comprise:

Described terminal needs CSI process to be processed using all CSI processes that comprise in the CSI process collection of making an appointment as this; Or

Described terminal needs CSI process to be processed using all CSI processes that comprise in the CSI process collection that in the carrier set of making an appointment, each carrier wave is corresponding as this.

6. method as claimed in claim 3, is characterized in that, described base station is that different subframe set configures respectively CSI process collection, and wherein, described subframe set comprises at least one subframe, and corresponding at least one CSI process collection of subframe set described in each;

Described terminal determines that this needs CSI process to be processed to comprise:

For each subframe set, described terminal determines that according to described indication information in CSI process collection corresponding to this subframe set, this needs CSI process to be processed;

Described terminal measures corresponding CSI according to these need each CSI process to be processed and comprises:

For each subframe set, described terminal is according in this subframe set, this needs each CSI process to be processed to measure corresponding CSI;

Described terminal selects at least one CSI to comprise as CSI reporting information from all CSI:

For each subframe set, described terminal selects at least one CSI as the CSI reporting information of this subframe set from all CSI corresponding to this subframe set of measuring.

7. the method as described in as arbitrary in claim 1 ~ 6, is characterized in that, described terminal selects at least one CSI as CSI reporting information from all CSI, comprises one of following or combination:

Described terminal needs different interferometry resources corresponding to CSI process to be processed according to this, from many CSI that measure, according to default selection strategy, selects at least one CSI corresponding at least one interferometry resource as CSI reporting information; Or,

Described terminal needs different NZP CSI-RS corresponding to CSI process to be processed according to this, from many CSI that measure, according to default selection strategy, selects at least one CSI that at least one NZP CSI-RS is corresponding as CSI reporting information; Or,

Described terminal needs transmission mechanism corresponding to CSI process to be processed according to this, from many CSI that measure, according to default selection strategy, selects at least one CSI that at least one transmission mechanism is corresponding as CSI reporting information;

Described terminal needs carrier wave corresponding to CSI process to be processed according to this, in many CSI that measure, according to default selection strategy, selects at least one CSI corresponding at least one carrier wave difference as CSI reporting information from all carrier waves;

Described terminal selects at least one CSI as CSI reporting information according to default selection strategy from all many CSI that measure.

8. method as claimed in claim 7, is characterized in that, described default selection strategy comprises one of following or combination:

The principle of information capacity maximum;

The principle of Signal to Interference plus Noise Ratio SINR maximum;

Principle higher than the information capacity thresholding of setting;

Principle higher than the SINR thresholding of setting.

9. the method for claim 1, it is characterized in that, described CSI reporting information also comprises: every CSI corresponding CSI process is being determined that this needs the index information in all CSI processes to be processed, or every CSI process corresponding to CSI needs the index information in all CSI processes to be processed on the carrier wave at its place.

10. a method that receives aperiodic channel status information, is characterized in that, the method comprises:

Described base station sends indication information to described terminal, take and indicate described terminal from described base station as this terminal configuration, also to notify all CSI process collection to this terminal according to described indication information, determine that this needs CSI process to be processed, according to this, need each CSI process to be processed to measure corresponding CSI, and from all CSI, select at least one CSI as CSI reporting information;

11. methods as claimed in claim 10, is characterized in that, all CSI process collection that base station notification terminal is its configuration comprise:

12. methods as claimed in claim 10, is characterized in that, if described terminal has activated a plurality of carrier waves, and described terminal is supported multi-point cooperative transmission on the carrier wave partly or entirely having activated;

All CSI process collection that described base station notification terminal is its configuration comprise:

Described base station is that all carrier waves of the support multi-point cooperative transmission of described terminal configure respectively at least one CSI process collection.

13. methods as claimed in claim 10, it is characterized in that, described base station is that different subframe set configures respectively CSI process collection, wherein, described subframe set comprises at least one subframe, and corresponding at least one CSI process collection of subframe set described in each.

14. methods as claimed in claim 10, is characterized in that, described indication information comprises:

The second selection strategy, be used to indicate the terminal CSI process collection that selection is made an appointment in all CSI process collection of notice or the CSI process collection corresponding with the carrier set of making an appointment, determine that this needs CSI process to be processed, wherein, described carrier set comprises the carrier wave of terminal configuration described at least one, and corresponding at least one CSI process collection of the carrier wave of each in carrier set described in each.

15. methods as claimed in claim 14, is characterized in that, the instruction content of described indication information is that the transfer point of CSI process collection index, setting is, the interferometry resource of the NZP CSI-RS of setting, setting or carrier set index.

16. 1 kinds for sending the terminal of aperiodic channel status information CSI, it is characterized in that, described terminal comprises:

17. terminals as claimed in claim 16, is characterized in that, described indication information comprises:

18. terminals as claimed in claim 17, is characterized in that, described determination module specifically for:

When described indication information comprises described the first selection strategy, and when the instruction content of described indication information is CSI process collection index, from all CSI process collection of notice, determine the CSI process collection corresponding with described CSI process collection index, and all CSI processes corresponding in definite CSI process collection are needed to CSI process to be processed for this;

When described indication information comprises described the first selection strategy, and the instruction content of described indication information for set transfer point time, from all CSI process collection of notice, determine that all CSI processes corresponding to described transfer point need CSI process to be processed as this;

When described indication information comprises described the first selection strategy, and when the instruction content of described indication information is NZP CSI-RS, from all CSI process collection of notice, determine that all CSI processes corresponding with described NZP CSI-RS need CSI process to be processed as this;

When described indication information comprises described the first selection strategy, and when the instruction content of described indication information is interferometry resource, from all CSI process collection of notice, determine that all CSI processes corresponding with described interferometry resource need CSI process to be processed as this;

When described indication information comprises described the first selection strategy, and when the instruction content of described indication information is carrier set index, from the carrier set of described base station notice, determine the carrier set corresponding with described carrier set index, and all CSI processes corresponding in CSI process collection corresponding to each carrier wave in definite carrier set are needed to CSI process to be processed as this.

19. terminals as claimed in claim 17, is characterized in that, described determination module specifically for:

20. terminals as claimed in claim 17, is characterized in that,

Described determination module also for: for each subframe set, according to described indication information, determine in CSI process collection corresponding to this subframe set that this needs CSI process to be processed;

Described processing module also for: for each subframe set, according in this subframe set, this needs each CSI process to be processed measure corresponding CSI;

Described sending module also for: for each subframe set, from all CSI corresponding to this subframe set of measuring, select at least one CSI as the CSI reporting information of this subframe set;

Wherein, described base station is that different subframe set configures respectively CSI process collection, and described subframe set comprises at least one subframe, and corresponding at least one CSI process collection of subframe set described in each.

21. terminals as described in as arbitrary in claim 16 ~ 20, is characterized in that, described sending module specifically for:

22. terminals as claimed in claim 21, is characterized in that, described default selection strategy comprises one of following or combination:

The maximum principle of information capacity;

The maximum principle of Signal to Interference plus Noise Ratio SINR;

Higher than the information capacity thresholding principle of setting;

Higher than the SINR thresholding principle of setting.

23. 1 kinds for receiving the base station of aperiodic channel status information, it is characterized in that, this base station comprises:

Indication information sending module, for sending indication information to described terminal, take and indicate described terminal from described base station as this terminal configuration, also to notify all CSI process collection to this terminal according to described indication information, determine that this needs CSI process to be processed, according to this, need each CSI process to be processed to measure corresponding CSI, and from all CSI, select at least one CSI as CSI reporting information;

24. base stations as claimed in claim 23, is characterized in that, described notification module specifically for:

To described terminal, be sent as all CSI process collection of its configuration; Or

To described terminal, be sent as index corresponding to CSI process in each CSI process collection of its configuration, so that described terminal is determined corresponding CSI process according to index corresponding to described CSI process; Or

To described terminal, be sent as the bit sequence corresponding to each CSI process collection of its configuration, so that described terminal determines according to described bit sequence the CSI process that corresponding CSI process collection comprises.

25. base stations as claimed in claim 23, is characterized in that, described notification module also for:

When described terminal has activated a plurality of carrier waves, and described terminal is while supporting multi-point cooperative transmission on the carrier wave partly or entirely having activated, for all carrier waves of the support multi-point cooperative transmission of described terminal configure respectively at least one CSI process collection.

26. base stations as claimed in claim 23, is characterized in that, described notification module also for:

For different subframe set configures respectively CSI process collection, wherein, described in each, subframe set comprises at least one subframe, and corresponding at least one CSI process collection of subframe set described in each.

The transmission system of 27. 1 kinds of aperiodic channel status informations, is characterized in that, this system comprises:

All CSI process collection that base station is its configuration for notification terminal; To described terminal, send indication information, to indicate described terminal to carry out CSI process aperiodic; And receive the CSI of described terminal to report, and carry out descending scheduling and transmission according to described CSI;

Terminal, for the indication information sending according to the base station receiving, is described terminal configuration all CSI process collection of notice to this terminal from described base station, determines that this needs CSI process to be processed; According to this, need each CSI process to be processed to measure corresponding CSI; And from all CSI, select at least one CSI as CSI reporting information, and to described base station, send described CSI reporting information;