CN102315871A - Processing method of non-periodic channel state information and device and system - Google Patents
Processing method of non-periodic channel state information and device and system Download PDFInfo
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- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
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- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
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Abstract
本发明公开了一种非周期的信道状态信息的处理方法、装置及系统，非周期的CSI从触发到反馈的间隔过短而无法对信息进行有效处理的问题，该方法包括：接收高层配置信令，该高层配置信令包括一个或者CSI-RS配置信令，且接收一个或者多个CSI-RS参考信号；根据该一个或者多个CSI-RS配置信令对该一个或者多个CSI-RS参考信号进行信道测量，获得测量结果；使用该测量结果确定K个非周期的CSI，并在K个不同的子帧上上报该K个非周期的CSI；其中，K是大于等于2的正整数。本发明的实施例克服了COMP技术或者分布式天线系统中从触发非周期CSI反馈到实际非周期CSI反馈时间过短而无法对信息进行有效处理的问题。
The invention discloses a method, device and system for processing aperiodic channel state information. The interval from triggering to feedback of aperiodic CSI is too short to effectively process the information. The method includes: receiving high-level configuration information The high-level configuration signaling includes one or more CSI-RS configuration signaling, and receives one or more CSI-RS reference signals; according to the one or more CSI-RS configuration signaling, the one or more CSI-RS Perform channel measurement with reference to the signal to obtain measurement results; use the measurement results to determine K aperiodic CSIs, and report the K aperiodic CSIs on K different subframes; where K is a positive integer greater than or equal to 2 . The embodiments of the present invention overcome the problem that the time from triggering the aperiodic CSI feedback to the actual aperiodic CSI feedback is too short to effectively process the information in the COMP technology or the distributed antenna system.
Description
Technical field
The present invention relates to the communications field, processing method, the Apparatus and system of aperiodic channel condition information (Channel State Information abbreviates CSI as) in a kind of distributing antenna system or the cooperative transmission system.
Background technology
In wireless communication technology, (for example the Node B of evolution is eNodeB to base station side, when eNB) using many antenna transmission data, can take the mode of spatial reuse to improve message transmission rate.Promptly use identical running time-frequency resource to launch different data in the different antennas position at transmitting terminal, receiving terminal (for example user equipment (UE)) also uses many antennas to receive data.
Under single user's situation, the resource of all antennas is all distributed to same user; This user occupies the physical resource of distributing to base station side alone in a transmission intercal; This transmission means is called single user's multiple-input, multiple-output (Single User Multiple-Input Multiple-Out-put, SU-MIMO) transmission.Under multi-user's situation, the space resources of different antennae is distributed to different user; A user and at least one other user physical resource that the sharing base side is distributed in a transmission intercal; Sharing mode can be space division multiple access mode or space division multiplexing mode; This transmission means is called multi-user's multiple-input, multiple-output (Multiple User Multiple-Input Multiple-Out-put is called for short MU-MIMO) transmission, and wherein the physical resource of base station side distribution is meant running time-frequency resource.
Transmission system is if support SU-MIMO and MU-MIMO simultaneously, and eNB then need provide the data under these two kinds of patterns to UE.UE need know that all eNB is for the used order (Rank) of these UE transmission MIMO data when SU-MIMO pattern or MU-MIMO pattern.
Under the SU-MIMO pattern, the resource of all antennas is all distributed to same user, and the used number of plies of transmission MIMO data just equals eNB in the used order of transmission MIMO data.Under the MU-MIMO pattern, a corresponding user is transmitted total number of plies that the used number of plies is less than eNB transmission MIMO data, if carry out the switching of SU-MIMO pattern and MU-MIMO, then eNB need be in the different transmission mode UE Different control data that send a notice.
At long evolving system (Long Term Evolution; LTE) in; The information of reflection down physical channel state (Channel State Information CSI) comprises 3 partial contents: and the channel quality indication (Channels quality indication, CQI), pre-coding matrix indication (Pre-coding Matrix Indicator; PMI), order indication (Rank Indicator, RI).
CQI is for weighing an index of down channel quality quality.CQI representes with 0～15 integer value in the 36-213 agreement, has represented different CQI grades respectively.Different CQI corresponding modulation system and encoder bit rate (MCS) separately, be divided into 16 kinds of situation, can adopt 4 bit informations to represent, as shown in table 1:
Corresponding relation between table 1CQI index and the MCS
CQI is an important indicator weighing transmission, its sign be to adopt RI value as the transmission number of plies, and the code word of selecting the PMI indication that reports for use is during as precoding, the channel quality the when mode of stipulating according to agreement is carried out the transmission of MIMO closed loop precoding.Therefore, CQI can not be independent of RI and PMI existence.
Along with the proposition of LTE (LTE-A) demand that strengthens, people more and more pay attention to node average spectral efficiency (ase) and node edge spectrum efficiency.Comparatively speaking; The spectrum efficiency of node edge is paid close attention to by people most; This mainly is because the provisional capital up and down of LTE-A system is with OFDM (Orthogonal Frequency Division Multiplexing; OFDM), perhaps be deformed into the frequency division systems of basic multiple access multiplexing mode with certain of OFDM.With traditional with code division multiple access (Code Division Multiple Access; CDMA) be the wireless communication system difference of basic multiple access multiplexing mode; The LTE-A system does not have processing gain; Intra-node is because complete frequency division quadrature, thus almost there is not interference problem, but handle thorny relatively in the interference at node edge place.
The processing of among the LTE node edge place being disturbed at present mainly contains following three kinds of methods:
(1) interference randomization;
(2) interference eliminated;
(3) interference coordination (hiding).
The method of interference randomization generally adopts frequency hopping, when jumping, straight expand or the method for frame hopping alleviates the influence of interference between node; Its advantage is to need not the network planning; Need the support of signaling hardly, still can only say to have alleviated interference, fundamentally do not eliminate.
Though the method for interference eliminated can be used some algorithms to eliminate and disturb, generally need extra physical entity, like multi-antenna technology etc., could accomplish reasonable interference eliminated, still sometimes these conditions possibilities can not satisfy.
The method of interference coordination (hiding) is through some information between switching node; Use some algorithm to make each node select adequate resources to transmit according to the feedback information and the situation of self of other nodes automatically; Thereby the efficient utilization of resource between the realization node; And alleviate the chance that the resource collision utilizes between node as far as possible, finally reach the lifting of node edge performance, thereby it stresses to avoid occurring the interference that the identical running time-frequency resource of contention causes between node as far as possible.
Because the antenna distance of a plurality of adjacent nodes of node edge user distance is more or less the same, therefore utilize the transmitting antenna of a plurality of nodes to realize that the higher capacity of node edge place Radio Link and reliable transmission just become research emphasis.
At multipoint cooperative (Coordinated Multiple Points transmission and reception; CoMP) in the transmission; The CoMP handling process of prior art is: the set of network side allocating and measuring; Subscriber equipment carries out Reference Signal Received Power (Reference Signal Received Power according to measuring assembly; RSRP), Reference Signal Received Quality (Reference Signal Received Quality, RSRQ) or receive the signal strength signal intensity indication (Received Signal Strength Indicator, measurement RSSI) also obtains measurement result.Based on this measurement result, confirm the multipoint cooperative measuring assembly by network side or subscriber equipment, carry out the measurement and the feedback of channel status based on the multipoint cooperative measuring assembly of confirming.
In the version 11 (R11); A kind of typical scene appears in CoMP/MIMO: for specific UE; Different cooperative nodes has identical sub-district ID in the cooperation measuring assembly, and different cooperative nodes are bigger to the large scale decline difference of said UE, and this phenomenon is different owing to different transmission nodes (TP) transmitted power attribute; Some node is the high power node, and some node is a low power nodes.
Existing feedback technique comprises two kinds; A kind of is to carry out channel condition information feedback independently to every node, and another kind is the feedback of carrying out the channel condition information of the overall situation (Global) to all nodes, and wherein the channel condition information here comprises: channel quality indication (Channel Quality Indicator; CQI); Pre-coding matrix indication (Precoding Matrix Indicator, PMI) and the order indication (Rank Indicator, RI).Note; Transmission node (TP) also can be called sending node, and transmission node of the present invention can be macrocell (Macro cell), relay station (relay), Microcell (pico cell), picocell (femto cell) or Home eNodeB (Home (e) NodeB) etc.
Said typical scene also is appreciated that and is a kind of distributed multi-antenna system (DAS); Described distributed multi-antenna system is a kind of non-homogeneous or non-unified network (heterogeneous network); Comprise a grand station (Marco) and a plurality of far end radio frequency head (RRH) (perhaps remote radio unit (RRU) (RRU)), the shared identical cell ID of these sending nodes (Cell ID).UE can receive the signal of Marco and RRH, and expectation Macro and RRH carry out cooperation transmission.Above-mentioned cooperation pilosity send the node transmitting scene, in order to obtain more performance, needs to support the feedback of Global.
In version 10 (R10), supported channel condition information-reference symbol (CSI-RS) feedback of UE special-purpose (specific), promptly supported to give the self-defined CSI-RS port of UE, understand from the another one angle and promptly supported self-defined feedback set.So in the DAS system, supported the CSI-RS that disposes a cover Global to give UE at present, UE can carry out the CSI feedback of Global.The transmitting power that should be noted that Macro and RRH maybe be different, generally the received power difference possibly reach 6 decibels (dB) in addition more than.So existing feedback technique can only not supported the scene that transmitted power is close because do not support spaced antenna, under new scene, be difficult to work effectively.
For feedback aperiodic of the CSI of a plurality of carrier waves of traditional carrier aggregation, traditional scheme triggers report aperiodic at a Transmission Time Interval (TTI), reports CSI information aperiodic of all carrier waves at 4 Transmission Time Intervals (TTI is last) of delaying.For COMP system or distributing antenna system; For the transmission of the downgoing control signal that strengthens or in order to evade the interference of neighbor cell; If use the feedback method of the CSI of the many TP that are similar to carrier aggregation; Then need calculate obtain the CSI of a plurality of sub-districts or transmission node in very short time in like 4 TTI, finally cause subscriber equipment to have little time calculation process, user equipment (UE) can't be finished the work.
Summary of the invention
Technical problem to be solved by this invention is to overcome the uniting when sending of aperiodic channel condition information that COMP system or distributing antenna system are supported many sub-districts or many transmission nodes TP, the problem that can't effectively handle information because aperiodic CSI is too short from the interval that is triggered to feedback.
In order to solve the problems of the technologies described above, the present invention at first provides the processing method of first kind of aperiodic channel condition information, comprising:
Receive high-rise configuration signal, this high level configuration signal comprises one or more channel condition information-reference symbol (CSI-RS) configuration signal, and receives one or more CSI-RS reference signal;
According to this one or more CSI-RS configuration signal this one or more CSI-RS reference signal is carried out channel measurement, obtain measurement result;
Use this measurement result to confirm K aperiodic channel condition information (CSI), and on K different subframe, report this K aperiodic CSI;
Wherein, K is the positive integer more than or equal to 2.
Preferably, this one or more CSI-RS reference signal produces according to this one or more CSI-RS configuration signal, and has relation one to one between CSI-RS reference signal and the CSI-RS configuration signal.
Preferably, trigger the feedback of this aperiodic CSI, then on n+k*d TTI, report k aperiodic CSI at n Transmission Time Interval (TTI);
Wherein, k=1,2 ..., K, n are the positive integers more than or equal to 0, d is the positive integer more than or equal to 1.
Preferably, when this high level configuration signal comprised a CSI-RS configuration signal, the set that N all CSI-RS ports constitutes in a CSI-RS configuration had m CSI-RS port subclass;
Wherein, N is the positive integer greater than 1, and m is the positive integer greater than 1, and m is smaller or equal to N; There are not two CSI-RS port subclass identical.
Preferably, when this high level configuration signal comprises a CSI-RS configuration signal, all corresponding this CSI-RS port subclass of each among the individual aperiodic CSI of this K.
Preferably, this CSI comprises pre-coding matrix indication (PMI), order indication (RI) and channel quality indication (CQI), perhaps only comprises CQI.
Preferably, any two these CSI-RS port subclass do not comprise identical element, and the quantity sum of the element that comprised of all these CSI-RS port subclass equals N.
Preferably, a said CSI-RS port subclass, a transmission node in corresponding distributing antenna system or the cooperative multicast system, a plurality of transmission nodes in perhaps corresponding distributing antenna system or the cooperative multicast system.
Preferably, when this high level configuration signal comprises a plurality of CSI-RS configuration signal, m CSI-RS configuration arranged; Wherein, m is the positive integer greater than 1.
Preferably, each all corresponding this CSI-RS configuration among the individual aperiodic CSI of this K.
Preferably, this CSI comprises pre-coding matrix indication (PMI), order indication (RI) and channel quality indication (CQI), perhaps only comprises CQI.
Preferably, a said CSI-RS configuration, a transmission node in corresponding distributing antenna system or the cooperative multicast system, a plurality of transmission nodes in perhaps corresponding distributing antenna system or the cooperative multicast system.
The present invention also provides the processing method of second kind of aperiodic channel condition information, comprising:
Dispose one or more channel condition information-reference symbol (CSI-RS) configuration signal in the high-rise configuration signal;
Produce one or more CSI-RS reference signal according to this one or more CSI-RS configuration signal;
Transmission carries the high-rise configuration signal of this one or more CSI-RS configuration signal, and this one or more CSI-RS reference signal;
Receive K aperiodic channel condition information (CSI);
Wherein, K is the positive integer more than or equal to 2;
The measurement result that the individual aperiodic CSI of this K carries out channel measurement to this one or more CSI-RS reference signal and uses this channel measurement to obtain is confirmed.
Preferably, this K the definite step of measurement result that aperiodic CSI carries out channel measurement to this one or more CSI-RS reference signal and uses this channel measurement to obtain comprises the method according to the processing of aforementioned first kind of aperiodic channel condition information.
The present invention also provides the processing method of the third aperiodic channel condition information, has comprised the processing method of aforesaid first method and second kind of aperiodic channel condition information.
The present invention also provides a kind of CSI processing unit, comprising:
First receiver module is used to receive high-rise configuration signal and one or more channel condition information-reference symbol (CSI-RS) reference signal, and this high level configuration signal comprises one or more CSI-RS configuration signal;
Measurement module is used for according to this one or more CSI-RS configuration signal this one or more CSI-RS reference signal being carried out channel measurement, obtains measurement result;
Determination module is used to use this measurement result to confirm K aperiodic channel condition information (CSI);
Reporting module is used on K different subframe, reporting this K aperiodic CSI;
Wherein, K is the positive integer more than or equal to 2.
The present invention also provides a kind of CSI processing unit, comprising:
Configuration module is used for disposing one or more channel condition information-reference symbol of high-rise configuration signal (CSI-RS) configuration signal;
Generation module produces one or more CSI-RS reference signal;
Sending module is used to send the high-rise configuration signal that carries this one or more CSI-RS configuration signal, and this one or more CSI-RS reference signal;
Second receiver module is used to receive K aperiodic channel condition information (CSI);
Wherein, K is the positive integer more than or equal to 2;
This K aperiodic CSI confirms according to the measurement result of this one or more CSI-RS reference signal being carried out channel measurement and use this channel measurement to obtain.
The present invention also provides a kind of CSI treatment system, comprises foregoing two kinds of devices, wherein:
This first receiver module links to each other with this sending module;
This second receiver module links to each other with this reporting module.
Compared with prior art; Embodiments of the invention have overcome in COMP technology or the distributing antenna system from triggering aperiodic CSI and have fed back to the too short and problem that can't effectively handle information of actual aperiodic of CSI feedback time; Use is sent on different TTI the CSI of different sub-districts or different transmission node, has overcome the defective of scarce capacity that UE handled and calculated the CQI of many sub-districts or a plurality of transmission nodes.
Other features and advantages of the present invention will be set forth in specification subsequently, and, partly from specification, become obvious, perhaps understand through embodiment of the present invention.The object of the invention can be realized through the structure that in specification, claims and accompanying drawing, is particularly pointed out and obtained with other advantages.
Description of drawings
Accompanying drawing is used to provide the further understanding to technical scheme of the present invention, and constitutes the part of specification, is used to explain technical scheme of the present invention with embodiments of the invention, does not constitute the restriction to technical scheme of the present invention.In the accompanying drawings:
Fig. 1 is the schematic flow sheet of the CSI processing method of the embodiment of the invention.
Fig. 2 is the schematic flow sheet of the another kind of CSI processing method of the embodiment of the invention.
Fig. 3 is the schematic flow sheet of also a kind of CSI processing method of the embodiment of the invention.
Fig. 4 is the structural representation of the CSI processing unit of the embodiment of the invention.
Fig. 5 is the structural representation of the another kind of CSI processing unit of the embodiment of the invention.
Embodiment
Below will combine accompanying drawing and embodiment to specify execution mode of the present invention, how the application technology means solve technical problem to the present invention whereby, and the implementation procedure of reaching technique effect can make much of and implement according to this.
At first, if do not conflict, the mutually combining under the prerequisite of not conflicting mutually of each characteristic among the embodiment of the invention and the embodiment is all within protection scope of the present invention.In addition; Can in computer system, carry out in the step shown in the flow chart of accompanying drawing such as a set of computer-executable instructions, and, though logical order has been shown in flow chart; But in some cases, can carry out step shown or that describe with the order that is different from here.
Embodiments of the invention provide a kind of CSI processing method, are applied in subscriber equipment (UE) side, and as shown in Figure 1, it mainly comprises the steps:
Step S110, a subscriber equipment (UE) receives the high-rise configuration signal that send the base station, and receives one or more CSI-RS reference signal that send the base station; Wherein, said high-rise configuration signal comprises one or more (two or more) channel condition information-reference symbol (CSI-RS) configuration signal; Said one or more CSI-RS reference signal is produced according to this one or more CSI-RS configuration signal by the base station accordingly correspondingly; Also promptly have relation one to one between this CSI-RS reference signal and this CSI-RS configuration signal, produce the CSI-RS reference signal of a correspondence according to a CSI-RS configuration signal;
Step S120, UE carries out channel measurement according to this one or more CSI-RS configuration signal to this one or more CSI-RS reference signal, obtains measurement result;
Step S130, this UE use said measurement result to confirm K aperiodic channel condition information (CSI), and on K different subframe, report this K aperiodic CSI to the base station;
Wherein, K is the positive integer more than or equal to 2.
In the present embodiment, the base station is in the feedback of the aperiodic CSI of n this UE of TTI triggering, and then this UE reports the 1st aperiodic channel condition information (CSI) on n+d TTI, on n+2d TTI, reports the 2nd aperiodic CSI; By that analogy, on n+K*d TTI, report K aperiodic channel condition information (CSI).Also promptly, present embodiment reports k aperiodic CSI on n+k*d TTI; Wherein, k=1,2 ..., K, n are the positive integers more than or equal to 0, d is the positive integer more than or equal to 1.
In the embodiments of the invention; When described high-rise configuration signal comprises a channel condition information-reference symbol (CSI-RS) configuration signal; For said UE, the set that N all CSI-RS ports constitutes in a CSI-RS configuration has the m sub-set, is defined as CSI-RS port subclass; Wherein, N is the positive integer greater than 1, and m is the positive integer greater than 1, and m is smaller or equal to N, and does not have two CSI-RS port subclass identical.
In the embodiments of the invention; When high-rise configuration signal comprises a CSI-RS configuration signal; For described K aperiodic channel condition information (CSI); The all corresponding CSI-RS port subclass of each aperiodic CSI, the number K of aperiodic CSI is smaller or equal to the number of CSI-RS port subclass.Wherein, described channel condition information comprises PMI, RI and CQI, perhaps only comprises CQI.
In the embodiments of the invention, any two said CSI-RS port subclass do not comprise identical element, and the quantity sum of the element that comprised of all said CSI-RS port subclass equals N.
In the embodiments of the invention, a said CSI-RS port subclass, a transmission node in corresponding distributing antenna system or the cooperative multicast system, a plurality of transmission nodes in perhaps corresponding distributing antenna system or the cooperative multicast system.
In the embodiments of the invention, when described high-rise configuration signal comprises a plurality of channel condition information-reference symbols (CSI-RS) configuration signal,, m CSI-RS configuration arranged for said UE.
In the embodiments of the invention; When high-rise configuration signal comprises a plurality of CSI-RS configurations; For described K aperiodic channel condition information (CSI), the corresponding CSI-RS configuration of each aperiodic CSI, the number K of aperiodic CSI is smaller or equal to the number of CSI-RS configuration.Wherein, described channel condition information comprises PMI, RI and CQI, perhaps only comprises CQI.
In the embodiments of the invention, a said CSI-RS configuration, a transmission node in corresponding distributing antenna system or the cooperative multicast system, a plurality of transmission nodes in perhaps corresponding distributing antenna system or the cooperative multicast system.
Embodiments of the invention provide a kind of processing method of channel condition information, are applied in base station side, and are as shown in Figure 2, and present embodiment mainly comprises:
Step S210, one or more channel condition information-reference symbol (CSI-RS) configuration signal in the high-rise configuration signal of base station configuration;
Step S220, the base station produces one or more CSI-RS reference signal one to one according to this one or more CSI-RS configuration signal; Corresponding C SI-RS reference signal of a corresponding generation of CSI-RS configuration signal;
Step S230, the high-rise configuration signal that carries one or more CSI-RS configuration signal is sent to subscriber equipment (UE) in the base station, and this one or more CSI-RS reference signal;
Step S240, the base station receives K the aperiodic channel condition information (CSI) that this UE reports;
Wherein, K is the positive integer more than or equal to 2;
This K aperiodic CSI is that this UE carries out channel measurement according to this one or more CSI-RS configuration signal to this one or more CSI-RS reference signal, and the measurement result of using this channel measurement to obtain is confirmed.Detailed process please refer to aforementioned particular content embodiment illustrated in fig. 1, repeats no more here.
Embodiments of the invention provide a kind of processing method of channel condition information, please combine embodiment illustrated in fig. 1ly and embodiment illustrated in fig. 2 to understand.As shown in Figure 3, present embodiment mainly comprises:
Step S310, one or more channel condition information-reference symbol (CSI-RS) configuration signal in the high-rise configuration signal of base station configuration;
Step S320, the base station produces one or more CSI-RS reference signal one to one according to this one or more CSI-RS configuration signal;
Step S330, the high-rise configuration signal that carries this one or more CSI-RS configuration signal is sent to subscriber equipment (UE) in the base station, and sends this one or more CSI-RS reference signal that is produced;
Step S340, subscriber equipment (UE) receives the high-rise configuration signal that carries this one or more CSI-RS configuration signal that send the base station, and this one or more CSI-RS reference signal;
Step S350, this UE carries out channel measurement according to this one or more CSI-RS configuration signal to this one or more CSI-RS reference signal, obtains measurement result;
Step S360, this UE use said measurement result to confirm K aperiodic channel condition information (CSI);
Step S370, this UE reports this K aperiodic CSI to the base station on K different subframe;
Step S380, the base station receives this K the aperiodic CSI that this UE reports on this K different subframe.
Embodiments of the invention provide a kind of CSI processing unit, are applied to the UE side, and it can be used for aforementioned embodiment as shown in figures 1 and 3.In conjunction with previous embodiment, this device as shown in Figure 4 mainly comprises:
Measurement module 420 links to each other with this first receiver module 410, is used for according to this one or more CSI-RS configuration signal this one or more CSI-RS reference signal being carried out channel measurement, obtains measurement result;
Determination module 430 links to each other with this measurement module 420, and the measurement result that is used to use measurement module 420 to be obtained is confirmed K aperiodic channel condition information (CSI); Wherein, K is the positive integer more than or equal to 2;
Embodiments of the invention provide a kind of CSI processing unit, are applied to the base station, and it can be used for aforementioned embodiment as shown in Figures 2 and 3.In conjunction with previous embodiment, as shown in Figure 5, this device mainly comprises:
Sending module 530; Link to each other with configuration module 510 and generation module 520; Be used to send the high-rise configuration signal that carries one or more CSI-RS configuration signal that configuration module 510 disposed, and send one or more CSI-RS reference signal that generation module 520 is produced;
Embodiments of the invention provide a kind of CSI treatment system, comprise the device that can be applicable to the UE side of embodiment as shown in Figure 4 and the device that can be applicable to base station side embodiment illustrated in fig. 5.Please refer to Fig. 1, Fig. 2, Fig. 3 and embodiment shown in Figure 4, as shown in Figure 5, this system of present embodiment mainly comprises:
First processing unit 400, it comprises first receiver module 410 as shown in Figure 4, measurement module 420, determination module 430 and reporting module 440, and each module in this device can not done here and give unnecessary details with reference to content understanding embodiment illustrated in fig. 4;
Second processing unit 500, it comprises configuration module as shown in Figure 5 510, generation module 520, sending module 530 and second receiver module 540, and each module in this device can not done here and give unnecessary details with reference to content understanding embodiment illustrated in fig. 5;
Wherein, first receiver module 410 links to each other with sending module 530, is used to receive the said high-rise configuration signal that this sending module 530 sends; Second receiver module 540 links to each other with reporting module 440, is used to receive this CSI that this reporting module 440 reports.
Experimental applications one
UE place base station configuration UE is the port number of pre-coding matrix indication PMI/RI and CSI-RS to be arranged greater than 1.
Subscriber equipment (UE) receives the high-rise configuration signal from the CSI-RS configuration signal of base station, and wherein, the CSI-RS configuration signal comprises m port subclass.CSI-RS port subclass is all N the m that the CSI-RS port is divided into the set that said UE is given in configuration.Wherein, N
0Individual CSI-RS port constitutes first CSI-RS port subclass CSIRSSubSet
0, N
1Individual CSI-RS port constitutes second CSI-RS port subclass CSIRSSubSet
1, and the like, N
M-1Individual port constitutes m CSI-RS port subclass CSIRSSubSet
M-1Wherein, N is the positive integer greater than 1, and m is the positive integer greater than 1, and m is smaller or equal to N.
For first CSI-RS port subclass CSIRSSubSet
0, channel measurement can be confirmed first aperiodic channel status information CSI
0For second CSI-RS port subclass CSIRSSubSet
1, channel measurement can be confirmed second aperiodic channel status information CSI
1By that analogy; For m CSI-RS port subclass CSIRSSubSet
M-1, channel measurement can be confirmed m aperiodic channel status information CSI
M-1Wherein, any one CSI includes PMI, RI and CQI.
Here m can equal 2.
Accordingly, CSI-RS port subclass is meant that it is from 15 to 22 that all CSI-RS ports of said UE are given in configuration, is divided into 2 set mouths, and these 8 ports are divided into 2 set.Wherein, preceding 4 CSI-RS ports promptly from 15 to 18 constitute first CSI-RS port subclass CSIRSSubSet
0, other 4 CSI-RS ports i.e. second CSI-RS port subclass CSIRSSubSet of from 19 to 22 formations
1
For first CSI-RS port subclass CSIRSSubSet
0, channel measurement can be confirmed first aperiodic channel condition information CSI
0For second CSI-RS port subclass CSIRSSubSet
1, channel measurement can be confirmed second aperiodic channel condition information CSI
1
More specifically, CSI
0Perhaps CSI
1Be the CSI of Physical Uplink Shared Channel (PUSCH) feedback model Mode 1-2 definition, the CSI of the perhaps CSI of PUSCH feedback model Mode 2-2 definition, or PUSCH feedback model Mode 3-1 definition, these feedback models all have definition in the R10 agreement.
Here; For described UE; A transmission node TP in corresponding distributing antenna system of CSI-RS port subclass or the cooperative multicast system, the perhaps a plurality of transmission node TP in corresponding distributing antenna system of CSI-RS port subclass or the cooperative multicast system.
User equipment (UE) reports eNodeB with said CSI value.
If fed back in the aperiodic that n TTI triggers described user equipment (UE) the base station, then described user equipment (UE) feeds back first aperiodic channel status information CSI on n+4 TTI
0, second aperiodic channel status information CSI of feedback on n+2*4 TTI
1
Experimental applications two
UE place base station configuration UE is the port number of pre-coding matrix indication PMI/RI and CSI-RS to be arranged greater than 1.
User equipment (UE) receives the high-rise configuration signal that comprises m CSI-RS configuration signal from the base station.
For first CSI-RS configuration signal, channel measurement can be confirmed first aperiodic channel condition information CSI
0For second CSI-RS configuration signal, channel measurement can be confirmed second aperiodic channel condition information CSI
1By that analogy; For m CSI-RS configuration, channel measurement can be confirmed m aperiodic channel condition information CSI
M-1Wherein, any one CSI includes PMI, RI and CQI.
Here m can equal 2.
Accordingly, for first CSI-RS configuration, channel measurement can be confirmed first aperiodic channel condition information CSI
0, 8 CSI-RS antenna ports are arranged; For second CSI-RS configuration, channel measurement can be confirmed second aperiodic channel status information CSI
1, 4 CSI-RS antenna ports are arranged.
More specifically, CSI
0Perhaps CSI
1Be the CSI of PUSCH feedback model Mode 1-2 definition, the perhaps CSI of PUSCH feedback model Mode 2-2 definition, the perhaps CSI of PUSCH feedback model Mode 3-1 definition.These feedback models all have definition in the R10 agreement.And, CSI
0PMI use the code book of 8 antennas, CSI
1PMI use the code book of 4 antennas.
Here; For described UE; A CSI-RS disposes a transmission node TP in corresponding distributing antenna system or the cooperative multicast system, and perhaps a CSI-RS disposes a plurality of transmission node TP in corresponding distributing antenna system or the cooperative multicast system.
User equipment (UE) reports eNodeB with said CSI value.
If fed back in the aperiodic that n TTI triggers described user equipment (UE) the base station, then described user equipment (UE) feeds back first aperiodic channel status information CSI on n+4 TTI
0, second aperiodic channel status information CSI of feedback on n+2*4 TTI
1
In sum, according to the abovementioned embodiments of the present invention and experimental applications, for UE, confirm different CSI based on different CSI-RS port subclass or different CSI-RS configurations.And then through on a plurality of TTI, reporting CSI, subscriber equipment can overcome the excessive influence of operand of calculating CQI/PMI/RI effectively on the one hand, has improved the performance of distributing antenna system on the other hand.
It is apparent to those skilled in the art that the above-mentioned device that the embodiment of the invention provided and each part of system, and each step in the method; Can realize that they can concentrate on the single calculation element with the general calculation device, perhaps be distributed on the network that a plurality of calculation element forms; Alternatively; They can realize with the executable program code of calculation element, thereby, can they be stored in the storage device and carry out by calculation element; Perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
Though the execution mode that the present invention disclosed as above, the execution mode that described content just adopts for the ease of understanding the present invention is not in order to limit the present invention.Technical staff under any the present invention in the technical field; Under the prerequisite of spirit that does not break away from the present invention and disclosed and scope; Can do any modification and variation what implement in form and on the details; But scope of patent protection of the present invention still must be as the criterion with the scope that appending claims was defined.
Claims (19)
1. the processing method of an aperiodic channel condition information comprises:
Receive high-rise configuration signal, this high level configuration signal comprises one or more channel condition information-reference symbol (CSI-RS) configuration signal, and receives one or more CSI-RS reference signal;
According to this one or more CSI-RS configuration signal this one or more CSI-RS reference signal is carried out channel measurement, obtain measurement result;
Use this measurement result to confirm K aperiodic channel condition information (CSI), and on K different subframe, report this K aperiodic CSI;
Wherein, K is the positive integer more than or equal to 2.
2. method according to claim 1, wherein:
Trigger the feedback of this aperiodic CSI at n Transmission Time Interval (TTI), then on n+k*d TTI, report k aperiodic CSI;
Wherein, k=1,2 ..., K, n are the positive integers more than or equal to 0, d is the positive integer more than or equal to 1.
3. method according to claim 1, wherein:
When this high level configuration signal comprised a CSI-RS configuration signal, the set that N all CSI-RS ports constitutes in a CSI-RS configuration had m CSI-RS port subclass;
Wherein, N is the positive integer greater than 1, and m is the positive integer greater than 1, and m is smaller or equal to N; There are not two CSI-RS port subclass identical.
4. method according to claim 3, wherein:
When this high level configuration signal comprises a CSI-RS configuration signal, all corresponding this CSI-RS port subclass of each among the individual aperiodic CSI of this K.
5. method according to claim 3, wherein:
This CSI comprises pre-coding matrix indication (PMI), order indication (RI) and channel quality indication (CQI), perhaps only comprises CQI.
6. method according to claim 3, wherein:
Any two these CSI-RS port subclass do not comprise identical element, and the quantity sum of the element that comprised of all these CSI-RS port subclass equals N.
7. method according to claim 3, wherein:
A said CSI-RS port subclass, a transmission node in corresponding distributing antenna system or the cooperative multicast system, a plurality of transmission nodes in perhaps corresponding distributing antenna system or the cooperative multicast system.
8. method according to claim 1, wherein:
When this high level configuration signal comprises a plurality of CSI-RS configuration signal, m CSI-RS configuration arranged; Wherein, m is the positive integer greater than 1.
9. method according to claim 8, wherein:
All corresponding this CSI-RS configuration of among the individual aperiodic CSI of this K each.
10. method according to claim 8, wherein:
This CSI comprises pre-coding matrix indication (PMI), order indication (RI) and channel quality indication (CQI), perhaps only comprises CQI.
11. method according to claim 8, wherein:
A said CSI-RS configuration, a transmission node in corresponding distributing antenna system or the cooperative multicast system, a plurality of transmission nodes in perhaps corresponding distributing antenna system or the cooperative multicast system.
12. the processing method of an aperiodic channel condition information comprises:
Dispose one or more channel condition information-reference symbol (CSI-RS) configuration signal in the high-rise configuration signal;
Produce one or more CSI-RS reference signal according to this one or more CSI-RS configuration signal;
Transmission carries the high-rise configuration signal of this one or more CSI-RS configuration signal, and this one or more CSI-RS reference signal;
Receive K aperiodic channel condition information (CSI);
Wherein, K is the positive integer more than or equal to 2;
The measurement result that the individual aperiodic CSI of this K carries out channel measurement to this one or more CSI-RS reference signal and uses this channel measurement to obtain is confirmed.
13. method according to claim 12; Wherein, This K the definite step of measurement result that aperiodic CSI carries out channel measurement to this one or more CSI-RS reference signal and uses this channel measurement to obtain comprises according to the described method of each claim in the claim 1 to 11.
14. the processing method of an aperiodic channel condition information comprises:
Method as claimed in claim 13 is carried out in the base station;
Subscriber equipment (UE) is carried out like the described method of each claim in the claim 1 to 11.
15. a CSI processing unit comprises:
First receiver module is used to receive high-rise configuration signal and one or more channel condition information-reference symbol (CSI-RS) reference signal, and this high level configuration signal comprises one or more CSI-RS configuration signal;
Measurement module is used for according to this one or more CSI-RS configuration signal this one or more CSI-RS reference signal being carried out channel measurement, obtains measurement result;
Determination module is used to use this measurement result to confirm K aperiodic channel condition information (CSI);
Reporting module is used on K different subframe, reporting this K aperiodic CSI;
Wherein, K is the positive integer more than or equal to 2.
16. device according to claim 15, wherein:
This reporting module is used for reporting this K aperiodic CSI according to method as claimed in claim 2.
17. a CSI processing unit comprises:
Configuration module is used for disposing one or more channel condition information-reference symbol of high-rise configuration signal (CSI-RS) configuration signal;
Generation module produces one or more CSI-RS reference signal;
Sending module is used to send the high-rise configuration signal that carries this one or more CSI-RS configuration signal, and this one or more CSI-RS reference signal;
Second receiver module is used to receive K aperiodic channel condition information (CSI);
Wherein, K is the positive integer more than or equal to 2;
This K aperiodic CSI confirms according to the measurement result of this one or more CSI-RS reference signal being carried out channel measurement and use this channel measurement to obtain.
18. device according to claim 17, wherein,
This second receiver module is used to receive this K the aperiodic CSI that method according to claim 13 is confirmed.
19. a CSI treatment system comprises like claim 15 or 16 described devices and like claim 17 or 18 described devices, wherein:
This first receiver module links to each other with this sending module;
This second receiver module links to each other with this reporting module.
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| PCT/CN2011/085111 WO2012155523A1 (en) | 2011-09-30 | 2011-12-31 | Method, device and system for non-periodic channel state information processing |
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