CN103580812A - Channel state information feedback method and user equipment - Google Patents
Channel state information feedback method and user equipment Download PDFInfo
- Publication number
- CN103580812A CN103580812A CN201210275375.XA CN201210275375A CN103580812A CN 103580812 A CN103580812 A CN 103580812A CN 201210275375 A CN201210275375 A CN 201210275375A CN 103580812 A CN103580812 A CN 103580812A
- Authority
- CN
- China
- Prior art keywords
- feedback
- cqi
- parameter
- pmi
- port number
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- 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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- 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
- H04B7/0636—Feedback format
- H04B7/0645—Variable feedback
- H04B7/065—Variable contents, e.g. long-term or short-short
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- 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
- H04B7/0413—MIMO systems
- H04B7/0417—Feedback systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- 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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- 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
- H04B7/0621—Feedback content
- H04B7/063—Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- 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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- 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
- H04B7/0621—Feedback content
- H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- 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
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- 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
- H04B7/0636—Feedback format
- H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a channel state information feedback method and user equipment. According to the number of CSI-RS ports configured on the side of a base station and pmi-RI-Report parameters, the user equipment determines feedback modes of channel state information to be one of PMI, RI and CQI feedback, RI and CQI feedback and CQI feedback. The user equipment supports switchover of three kinds of the feedback mode types, can improve flexibility and performance of a system and reduce feedback expenses.
Description
Technical field
The present invention relates to field of mobile wireless communication, relate in particular to a kind of feedback method and subscriber equipment of channel condition information.
Background technology
In wireless communication technology, for example, when base station side (Node B of evolution is eNB) is used many antennas to send data, can take the mode of spatial reuse to improve message transmission rate, at transmitting terminal, use identical running time-frequency resource to launch different data in different aerial positions, receiving terminal (for example user equipment (UE)) is also used many antenna reception data.The in the situation that of alone family, the resource of all antennas is all distributed to same user, this user occupies alone the physical resource that base station side is distributed in a transmission intercal, this transmission means is called alone family multiple-input, multiple-output (Single User Multiple-Input Multiple-Out-put, referred to as SU-MIMO); The in the situation that of multi-user, the space resources of different antennae is distributed to different user, a user and at least one other user physical resource that 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, referred to as MU-MIMO), the physical resource that wherein base station side is distributed refers to running time-frequency resource.Transmission system is if support SU-MIMO and MU-MIMO simultaneously, and eNB needs to provide the data under these two kinds of patterns to UE.UE, when SU-MIMO pattern or MU-MIMO pattern, all needs to know that eNB is for these UE transmission MIMO data order (Rank) used.Under SU-MIMO pattern, the resource of all antennas is all distributed to same user, and the transmission MIMO data number of plies used just equals eNB in transmission MIMO data order used; Under MU-MIMO pattern, a corresponding user is transmitted total number of plies that the number of plies used is less than eNB transmission MIMO data, if carry out the switching of SU-MIMO pattern and MU-MIMO, eNB need to be in the different transmission mode different control data of UE that send a notice.
At Long Term Evolution (Long Term Evolution, referred to as LTE) in system, the up control signal of transmission that needs has correct/error response message (Acknowledgement/Negative Acknowledgement, referred to as ACK/NACK), and information (the Channel State Information of reflection down physical channel state, referred to as CSI) three kinds of forms: channel quality indication (Channels Quality Information, referred to as CQI), pre-coding matrix indication (Pre-coding Matrix Indicator, referred to as PMI), order indication (Rank Indicator, referred to as RI).
In LTE system, ACK/NACK response message is row control channel (Physical Uplink Control physically, referred to as PUCCH) above with form 1/1a/1b (PUCCH format1/1a1/b), transmit, if subscriber equipment (User Equipment, referred to as UE) need to send upstream data time, the upper transmission of row shared channel (Physical Uplink Shared Channel, referred to as PUSCH) physically.CQI/PMI, the feedback of RI can be periodic feedback, can be also acyclic feedback, concrete feedback is as shown in table 1 below:
Table 1 periodic feedback and aperiodicity are fed back corresponding uplink physical channel
| Scheduling method | Periodicity CQI reporting channel | Aperiodicity CQI reporting channel |
| Frequency is non-selective | PUCCH | |
| Frequency selectivity | PUCCH | PUSCH |
Wherein, for CQI/PMI, the RI of periodic feedback, if UE does not need to send upstream data, the CQI/PMI of periodic feedback, RI transmit with form 2/2a/2b (PUCCH format2/2a/2b) on PUCCH, when if UE need to send upstream data, CQI/PMI, RI transmit on PUSCH; For CQI/PMI, the RI of aperiodicity feedback, only on PUSCH, transmit.
(Release 8 for the version 8 of LTE, referred to as R8) defined following three kinds of downlink physical control channels in standard: physical down control format indicating channel (Physical Control Format Indicator Channel, referred to as PCFICH), physical hybrid automatic repeat request indicator channel (Physical Hybrid Automatic Retransmission Request Indicator Channel, referred to as PHICH) and Physical Downlink Control Channel (Physical Downlink Control Channel, referred to as PDCCH).Wherein PDCCH, for bearing downlink control information (Downlink Control Information, referred to as DCI), comprising: uplink and downlink schedule information, and uplink power control information.The form of DCI (DCI format) is divided into following several: DCI format 0, DCI format 1, DCI format 1A, DCI format 1B, DCI format 1C, DCI format 1D, DCI format 2, DCI format 2A, DCI format 3 and DCI format 3A etc., wherein support the transmission mode 5 of MU-MIMO to utilize the Downlink Control Information of DCI format 1D, and descending power territory (Downlink power offset field) δ power-offset in DCI format 1D is used to indicate the reduce by half information of (-10log10 (2)) of the power for a user in MU-MIMO pattern, MU-MIMO transmission due to two users of 5 supports of MU-MIMO transmission mode, by this descending power territory, MU-MIMO transmission mode 5 can be supported the dynamic switching of SU-MIMO pattern and MU-MIMO pattern, but no matter in SU-MIMO pattern or MU-MIMO pattern, this DCI format only supports the transmission of a stream to a UE, although LTE Release 8 supports the alone family transmission of maximum two streams in transmission mode 4, but because the switching between transmission mode can only be semi-static, so can not accomplish the dynamic switching of the multithread transmission of alone family and multi-user transmission in LTE version 8.
In the version 9 (R9) of LTE, in order to strengthen descending multi-antenna transmission, introduced the transmission mode that double-current wave beam forms (Beamforming), be defined as transmission mode 9, and Downlink Control Information has increased DCI format 2B to support this transmission mode, in DCI format 2B, there is a scrambler sequence identity (scrambling identity, referred to as SCID) sign bit to support two different scrambler sequence, eNB can distribute to different user by these two scrambler sequence, a plurality of users of same resource multiplex.In addition, when only having a transmission block to enable, antenna port when new data indication (NDI) bit that the transmission block of disable (Disabled) is corresponding is also used to refer to individual layer transmission.
In addition, in the version 10 (R10) of LTE, in order further to strengthen the transmission of descending many antennas, increased the transmission mode of new Closed-Loop Spatial Multiplexing, be defined as transmission mode 10, this transmission mode both can be supported Single User MIMO, can support multiuser MIMO again, and can support both dynamic switchings, this transmission mode is also supported the transmission of 8 antennas in addition.This new transmission mode has been determined the pilot tone of calling as solution with demodulation pilot frequency (Demodulation Reference Signal, referred to as DMRS), and UE need obtain the position of pilot tone, just can in pilot tone, do the estimation of channel and interference.Total number of plies of different transmission has different pilot frequency designs, for example in the version number 10 of LTE, tentatively surely there are three kinds of different patterns (DMRS Pattern), total number of plies of transmission or order are 1 or 2 o'clock, with first pattern (DMRS pattern 1), total number of plies of transmission or order be 3 or 4 o'clock with second pattern (DMRS pattern 2), total number of plies of transmission or order be in 5 to 8 during arbitrary value with the 3rd pattern (DMRS pattern 3).In SU-MIMO pattern, the data of all transport layers all send to same UE, so just can know that pilot frequency design also can know the position of pilot tone as long as UE obtains order.In SU-MIMO pattern, UE need know that sum of ranks starts the number of plies that this UE is transmitted, and UE also needs the pilot frequency design of knowing transmission use just can obtain the pilot frequency locations of interference.In addition, different DMRS ports are used different spreading codes, and UE also needs the spreading code of knowing transmission use just can obtain the information in pilot tone.
In R10 version, UE, by a kind of transmission mode (transmission mode) based on following that is set to of high-level signaling semi-static (semi-statically), receives PDSCH transfer of data according to the indication of the PDCCH of the search volume of subscriber equipment proprietary (UE-Specific):
Transmission mode 1: single antenna port; Port 0 (Single-antenna port; Port 0)
Transmission mode 2: transmit diversity (Transmit diversity)
Transmission mode 3: Open-Loop Spatial Multiplexing (Open-loop spatial multiplexing)
Transmission mode 4: Closed-Loop Spatial Multiplexing (Closed-loop spatial multiplexing)
Transmission mode 5: multi-user's multiple-input and multiple-output (Multi-user MIMO)
Transmission mode 6: closed loop Rank=1 precoding (Closed-loop Rank=1precoding)
Transmission mode 7: single antenna port; Port 5 (Single-antenna port; Port 5)
Transmission mode 8: stream transmission, i.e. dual-stream beamforming
Transmission mode 9: the Closed-Loop Spatial Multiplexing of maximum 8 layers.
In R10 version, for the feedback of Physical Uplink Control Channel PUCCH, transmission mode 9 support mode 1-1 and pattern 2-1 feedback system.For the pattern 1-1 feedback system of transmission mode 9, further comprise subpattern 1 and subpattern 2, by high-rise configuration signal PUCCH_format1-1_CSI_reporting_mode, distinguish.For the feedback of Physical Uplink Shared Channel PUSCH, transmission mode 9 need to be supported three kinds of feedback systems, is respectively pattern 1-2, pattern 2-2 and mode 3-1.
In R10 version, newly increased transmission mode 9 and CSI-RS (Channel-State Information-Reference Symbol, channel status indication reference symbol), transmission mode 9 is to carry out channel measurement based on CSI-RS, thereby calculates CQI.Other transmission modes are to carry out channel measurement based on CRS, thereby calculate CQI.In R10 version, also increased accordingly some CSI-RS parameters and characterized its attribute.CRS in contrast R8, some parameter is that similarly some parameter increases newly.As CSI-RS port number also has similar CRS port number in R8, CSI-RS sub-frame configuration cycle parameter increases newly.Parameter is below that community is proprietary and configured by high-level signaling, definition for CSI-RS, comprising: CSI-RS port number, CSI-RS configuration, CSI-RS sub-frame configuration parameter I CSI-RS, sub-frame configuration cycle T CSI-RS, subframe deviator and the hypothesis of control UE to the reference PDSCH transmitting power for CSI feedback.
In R10, for transmission mode 9, because introduced the new ideas of " dicode originally " or " two PMI ", so need to feed back two PMI; For 8 antennas, the channel condition information in a PMI indication broadband, the channel condition information of the 2nd PMI indication subband, only has two PMI of acquisition just can obtain complete pre-coding matrix information, and wherein subband comprises the situation in broadband; For 2 antennas and 4 antennas, what a PMI indicated is unit matrix, and the 2nd PMI is equivalent to the PMI of former R8 agreement.
Transmission mode 9 for R10 agreement, its feedback system support has PMI/RI feedback and there is no two kinds of modes of PMI/RI feedback, under TDD mode, general employing do not have PMI/RI, utilize channel reciprocity to obtain descending channel condition information, but channel reciprocity cannot be considered descending disturbed condition, to cause base station cannot accurately know particularly order indication (RI) information of descending channel condition information, thereby cannot realize the Adaptive Transmission of order, reduced flexibility and the performance of system.
Summary of the invention
The technical problem that the present invention solves is to provide a kind of feedback method and subscriber equipment of channel condition information, can support the switching of three kinds of feedback system types, improves flexibility, performance and the minimizing feedback overhead of system.
For solving the problems of the technologies described above, the invention provides a kind of feedback method of channel condition information,
Subscriber equipment, according to the port number of the channel condition information-reference symbol (CSI-RS) of base station side configuration and pre-coding matrix indication-order indication-report (pmi-RI-Report) parameter, determines that the feedback system of channel condition information is for wherein a kind of below:
Feeding back precoding matrix indication (PMI), order indication (RI) and channel quality indication (CQI); Feedback RI and CQI; Feedback CQI.
Further, described subscriber equipment determines whether only to feed back CQI according to the port number of described CSI-RS, and the port number of described CSI-RS is 1 o'clock, determines that feedback system is for only feeding back CQI; The port number of described CSI-RS is greater than at 1 o'clock, according to described pmi-RI-Report parameter, selects wherein a kind of in following two kinds of feedback systems: feedback PMI, RI and CQI; Feedback RI and CQI.
Further, described subscriber equipment is according to the port number of described CSI-RS and described pmi-RI-Report parameter,
If the port number of described CSI-RS is 1, determine that feedback system is: feedback CQI;
If the port number of described CSI-RS is greater than 1 and have a described pmi-RI-Report parameter, determine that feedback system is: feedback PMI, RI and CQI;
If the port number of described CSI-RS is greater than 1 and do not have a described pmi-RI-Report parameter, determine that feedback system is: feedback RI and CQI.
Further, for current transmission mode N, wherein N is more than or equal to 9 positive integer, and described subscriber equipment is determined the feedback system of channel condition information in such a way:
Described subscriber equipment is determined the second parameter y of feedback model x-y according to the port number of the described CSI-RS of base station side configuration, the port number of described CSI-RS is 1 o'clock, and y is 0; The port number of described CSI-RS is greater than at 1 o'clock, and y is greater than 0;
Described subscriber equipment, according to the first parameter x of the feedback model of described the second parameter y determining and base station side configuration, is determined feedback model x-y; Wherein x represents CQI feedback kind, and x is positive integer; Y represents PMI feedback kind, and y is 0 or positive integer;
Described subscriber equipment is selected wherein a kind of in the following two kinds of feedback systems in described feedback model x-y according to the described pmi-RI-Report parameter of base station side configuration: feedback PMI, RI and CQI; Feedback RI and CQI.
Further, described subscriber equipment is determined feedback model x-y according to described the first parameter x and described the second parameter y, specifically comprises:
For periodic feedback, described the second parameter y is 0, and described the first parameter x is 1 or 2 o'clock, and definite feedback model is respectively pattern 1-0, pattern 2-0; Described the second parameter y is greater than 0, and described the first parameter x is 1 or 2 o'clock, and definite feedback model is respectively pattern 1-1, pattern 2-1.
Further, for current transmission mode N, N is more than or equal to 9 positive integer, and described subscriber equipment is determined the feedback system of channel condition information in such a way:
Described subscriber equipment, according to the first parameter x and the second parameter y of base station side configuration, is determined feedback model x-y; Wherein, the port number of described CSI-RS is 1 o'clock, and y is 0; The port number of described CSI-RS is greater than at 1 o'clock, and y is greater than 0;
Described subscriber equipment is selected wherein a kind of in the following two kinds of feedback systems in described feedback model Mode x-y according to the described pmi-RI-Report parameter of base station side configuration: feedback PMI, RI and CQI; Feedback RI and CQI.
Further, described subscriber equipment is determined feedback model x-y according to described the first parameter x and described the second parameter y, specifically comprises:
For non-periodic feedback, described the second parameter y is 0, and described the first parameter x is 1,2 or 3 o'clock, and definite feedback model is respectively pattern 1-0, pattern 2-0, mode 3-0; Described the second parameter y is greater than 0, and described the first parameter x is 1,2 or 3 o'clock, and definite feedback model is respectively pattern 1-2, pattern 2-2 or mode 3-1.
In addition, the present invention also provides a kind of subscriber equipment, and described subscriber equipment comprises:
Feedback system determination module, for according to port number and the pmi-RI-Report parameter of the CSI-RS of base station side configuration, determines that the feedback system of channel condition information is for wherein a kind of below: feedback PMI, RI and CQI; Feedback RI and CQI; Feedback CQI;
Feedback module, for feeding back corresponding channel condition information according to the described feedback system of determining.
Further, described feedback system determination module, for determining whether only to feed back CQI according to the port number of described CSI-RS, the port number of described CSI-RS is 1 o'clock, determines that feedback system is for only feeding back CQI; The port number of described CSI-RS is greater than at 1 o'clock, according to described pmi-RI-Report parameter, selects wherein a kind of in following two kinds of feedback systems: feedback PMI, RI and CQI; Feedback RI and CQI.
Further, described feedback system determination module, for according to the port number of described CSI-RS and described pmi-RI-Report parameter,
If the port number of described CSI-RS is 1, determine that feedback system is: feedback CQI;
If the port number of described CSI-RS is greater than 1 and have a described pmi-RI-Report parameter, determine that feedback system is: feedback PMI, RI and CQI;
If the port number of described CSI-RS is greater than 1 and do not have a described pmi-RI-Report parameter, determine that feedback system is: feedback RI and CQI.
Further, described feedback system determination module is used for, and for current transmission mode N, wherein N is more than or equal to 9 positive integer, determines in such a way the feedback system of channel condition information:
The the second parameter y that determines feedback model x-y according to the port number of the described CSI-RS of base station side configuration, the port number of described CSI-RS is 1 o'clock, y is 0; The port number of described CSI-RS is greater than at 1 o'clock, and y is greater than 0;
According to the first parameter x of the feedback model of the second described parameter y determining and base station side configuration, determine feedback model x-y; Wherein x represents CQI feedback kind, and x is positive integer; Y represents PMI feedback kind, and y is 0 or positive integer;
According to the described pmi-RI-Report parameter of base station side configuration, select wherein a kind of in the following two kinds of feedback systems in described feedback model x-y: feedback PMI, RI and CQI; Feedback RI and CQI.
Further, described feedback system determination module is used for, and for current transmission mode N, wherein N is more than or equal to 9 positive integer, determines in such a way the feedback system of channel condition information:
The first parameter x and the second parameter y according to base station side configuration, determine feedback model x-y; Wherein, the port number of described CSI-RS is 1 o'clock, and y is 0; The port number of described CSI-RS is greater than at 1 o'clock, and y is greater than 0;
According to the described pmi-RI-Report parameter of base station side configuration, select wherein a kind of in the following two kinds of feedback systems in described feedback model x-y: feedback PMI, RI and CQI; Feedback RI and CQI.
The CSI-RS port number that the present invention configures by high-level signaling and indicate whether feeding back precoding matrix indication (PMI) and unique current feedback system: the CQI of determining of the high-level signaling information of order indication (RI) feeds back, RI/CQI feedback, RI/PMI/CQI feeds back three kinds of forms, support the switching of three kinds of feedback system types, solve feedback system problem identificatioin, when guaranteeing individual layer transmission and TDD, can select correct channel condition information to feed back; And improve flexibility, performance and the minimizing feedback overhead of system; In addition, the present invention does not increase any system complexity and signaling consumption, and the protocol version before compatible, has kept good compatibility.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic flow sheet of feedback method of the channel condition information of the embodiment of the present invention.
Embodiment
For solving the above-mentioned problems in the prior art, present embodiment provides a kind of feedback method of channel condition information, adopts following technical scheme:
Subscriber equipment, according to the port number of the CSI-RS of high-level signaling configuration and higher level parameters pmi-RI-Report (indication-report of pre-coding matrix indication-order), is selected a kind of feedback system of channel condition information: PMI, RI and CQI from following three kinds of modes; RI and CQI; CQI.
Wherein, in the transmission mode 8 and transmission mode 9 of existing standard definition, can there is PMI/RI report or there is no PMI/RI report according to higher level parameters pmi-RI-Report configure user equipment.
Further, when described subscriber equipment is selected feedback system according to the port number of described CSI-RS and higher level parameters pmi-RI-Report, if the port number of described CSI-RS is 1, described subscriber equipment feedback channel quality indication (CQI); If the port number of described CSI-RS is greater than 1 and have a higher level parameters pmi-RI-Report, described subscriber equipment feedback PMI, RI and CQI; If the port number of described CSI-RS is greater than 1 and do not have a higher level parameters pmi-RI-Report, described subscriber equipment feedback RI and CQI.
Further, subscriber equipment is determined feedback model (Mode) x-y that current transmission mode N (wherein N is more than or equal to 9 positive integer) needs in such a way:
Subscriber equipment is determined the second parameter y of feedback system according to the port number of high-level signaling CSI-RS, according to CSI-RS port number, determine whether only to have CQI feedback, if port number equals 1 y=0, only feeds back CQI; Otherwise, if port number is greater than 1 y > 0, feed back RI/CQI or feedback RI/PMI/CQI;
Subscriber equipment is selected a kind of feedback system: PMI, RI and CQI according to higher level parameters pmi-RI-Report from following two kinds of feedback systems of feedback model Mode x-y definition; Or RI and CQI.
Wherein, the first parameter x of feedback model x-y represents CQI feedback kind, and x is positive integer; The second parameter y represents PMI feedback kind, and y is 0 or positive integer;
Two kinds of feedback systems of feedback model Mode x-y definition, refer to: if the feedback system of selecting is feedback PMI, RI and CQI, according to rule report PMI, RI and the CQI of existing feedback model Mode x-y definition; If the feedback system of selecting is feedback RI and CQI, according to the rule of existing feedback model Mode x-y definition, report RI and CQI, PMI no longer reports.
Further, the transmission mode configuring when high-level signaling is transmission mode N, during periodic feedback, if the second parameter y that subscriber equipment is determined according to the port number of CSI-RI is 0, the first parameter x of base station side configuration is 1 or 2 o'clock, and definite feedback model is respectively pattern 1-0, pattern 2-0; If the second parameter y that subscriber equipment is determined according to the port number of CSI-RI is greater than 0, and the first parameter x of base station side configuration is 1 or 2, and definite feedback model is respectively pattern 1-1, pattern 2-1.
Further, the transmission mode configuring when high-level signaling is transmission mode N, during non-periodic feedback,
If the second parameter y that subscriber equipment is determined according to the port number of CSI-RI is 0, the first parameter x of base station side configuration is 1,2 or 3 o'clock, and definite feedback model is respectively pattern 1-0, pattern 2-0, mode 3-0; If the second parameter y that subscriber equipment is determined according to the port number of CSI-RI is greater than 0, the first parameter x of base station side configuration is 1,2 or 3, and definite feedback model is respectively pattern 1-2, pattern 2-2 or mode 3-1;
Or, if the second parameter y of base station side configuration is 0, the first parameter x, be 1,2 or 3 o'clock, definite feedback model is respectively pattern 1-0, pattern 2-0, mode 3-0; If it is 1,2 or 3 that the second parameter y of base station side configuration is greater than 0, the first parameter x, definite feedback model is respectively pattern 1-2, pattern 2-2 or mode 3-1;
Further, subscriber equipment is according to determined feedback system feeding back channel state information.
For the ease of setting forth the present invention, below with reference to drawings and the specific embodiments, the enforcement of technical solution of the present invention is described in further detail.It should be noted that, in the situation that not conflicting, the embodiment in the application and the feature in embodiment be combination in any mutually.
Embodiment mono-
In the present embodiment, assume base stations as certain UE and configured transmission mode N, wherein, N is more than or equal to 9 positive integer.The transmission policy of the PDSCH of this UE is to support the Closed-Loop Spatial Multiplexing of maximum 8 layers, supports coordinated multipoint transmission (COMP) transmission of version 11 simultaneously.In addition, base station has configured 8 CSI-RS ports for this UE, and CSI-RS port numbers is respectively: 15,16,17,18,19,20,21 and 22.Meanwhile, assume base stations as this UE and configured pmi-RI-Report.
As shown in Figure 1, the process of subscriber equipment feeding back channel state information mainly comprises the steps:
Step S201, subscriber equipment is determined the port number of CSI-RS according to high-level signaling;
Step S203, subscriber equipment is determined current transmission mode according to high-level signaling;
Step S205, subscriber equipment is determined feedback system according to the port number of higher level parameters pmi-RI-Report, CSI-RS and current transmission mode, this step specifically comprises:
Subscriber equipment is determined the second parameter y of the feedback model Mode x-y that current transmission mode needs according to the port number of CSI-RS, because CSI-RS port number equals 8, therefore y > 0; And from predefined two kinds of feedback systems, select a kind of feedback system: PMI, RI and CQI, RI and CQI according to higher level parameters pmi-RI-Report.
Particularly, periodic feedback for transmission mode N, generally by Physical Uplink Control Channel PUCCH, feed back, UE can directly determine x according to high-level signaling, and determine y > 0 according to CSI-RS port number, according to the x and the y that obtain, select a pattern from pattern 1-1, pattern 2-1 feedback model, this feedback system is pattern x-1.Wherein, x equals 1 or 2;
Non-periodic feedback for transmission mode N, generally by Physical Uplink Shared Channel PUSCH, feed back, be that UE can directly determine x=1 or x=2 or 3 according to high-level signaling, and determine y > 0 according to CSI-RS port number, finally from pattern 1-2, pattern 2-2, mode 3-1, select a pattern x0-y0.Wherein, x0 equals 1 or 2 or 3; If x0=1,2, y0=2; If x0=3, y0=1.
Herein, the feedback system of subscriber equipment adopts pattern Mode x-y to represent; Wherein, x=1 represents broadband CQI/PMI; X=2 represents that UE selects subband CQI; X=3 represents high-rise configuration subband CQI; Y=0 represents there is no PMI; Y=1 represents single PMI; Y=2 represents a plurality of PMI, and this rule is applicable to the cycle and report aperiodic.
Step S207, subscriber equipment, according to definite feedback system, sends to eNB by channel status information reports.
Embodiment bis-
In the present embodiment, assume base stations as certain UE and configured transmission mode N, wherein, N is more than or equal to 9 positive integer, and the transmission policy of the PDSCH of this UE is to support the Closed-Loop Spatial Multiplexing of maximum 8 layers, supports version 11 simultaneously.In addition, base station has only configured 1 CSI-RS port for this UE, and CSI-RS port numbers is 15.
Particularly, subscriber equipment determines that the process of information feedback mode comprises following key step:
A1. user determines current transmission mode according to high-level signaling;
B1. subscriber equipment is determined the second parameter y of the feedback model Mode x-y that current transmission mode needs according to the port number of high-level signaling CSI-RS; Because CSI-RS port number equals 1, so y=0.
Herein, the feedback system of subscriber equipment adopts pattern x-y to represent; Wherein, x=1 represents broadband CQI/PMI; X=2 represents that UE selects subband CQI; X=3 represents high-rise configuration subband CQI; Y=0 represents there is no PMI; Y=1 represents single PMI; Y=2 represents a plurality of PMI, and this rule is applicable to the cycle and report aperiodic.
Periodic feedback for transmission mode N, by the feedback of Physical Uplink Control Channel PUCCH, UE can directly determine x according to high-level signaling, according to CSI-RS port number, determine y=0, according to the x and the y that obtain, select a pattern from pattern 1-0, pattern 2-0 feedback model, this feedback model is pattern x-0.Wherein, x0 equals 1 or 2.
Non-periodic feedback for transmission mode N, by Physical Uplink Shared Channel PUSCH, be that UE can directly determine x=1 or x=2 or 3 according to high-level signaling, according to CSI-RS port number, determine y=0, finally realize the pattern of selecting from pattern 1-0, pattern 2-0, mode 3-0.This feedback model is pattern x-0.Wherein, x0 equals 1 or 2 or 3.
C1. subscriber equipment is selected a kind of feedback model: PMI, RI and CQI, RI and CQI according to higher level parameters pmi-RI-Report from predefined two kinds of feedback models.Wherein, feedback model x-y has defined two kinds of described predefined feedback systems.
D1. subscriber equipment is according to definite feedback system feeding back channel state information.
Particularly, according to feedback system (periodic feedback or non-periodic feedback) and definite feedback model, there is following several situation:
During periodic feedback, if definite feedback model is pattern 1-0, UE will feed back broadband CQI information; If definite feedback model is pattern 2-0, UE is by the subband CQI of feedback broadband CQI and selection.
During non-periodic feedback, if definite feedback model is pattern 1-0, the CQI in feedback broadband; If definite feedback model is pattern 2-0, the feedback CQI in broadband and the CQI of M subband; If definite feedback model is mode 3-0, for each code word calculate and feed back a broadband CQI value (be broadband CQI index, 4bit), for each subband calculates and feeds back a subband CQI value.
It should be noted that, indication information above, can be the information that directly indicates whether to feed back PMI and RI, can be the information of indication feedback system type (being divided into the feedback system type of feeding back PMI/RI and the feedback system type of not feeding back PMI/RI), the present invention limit this yet.
In addition, corresponding to above method, also provide a kind of subscriber equipment in the embodiment of the present invention, this subscriber equipment mainly comprises:
Feedback system determination module, for selecting a kind of mode to carry out the feedback of channel condition information: PMI, RI and CQI according to port number and the higher level parameters pmi-RI-Report of the CSI-RS of base station side (high-level signaling) configuration from following three kinds of modes; RI and CQI; CQI;
Feedback module, for feeding back corresponding channel condition information according to determined feedback system.
Wherein, in transmission mode 8 and transmission mode 9, can there is PMI/RI report or there is no PMI/RI report according to higher level parameters pmi-RI-Report configure user equipment.
Further, when described feedback system determination module is selected feedback system according to the port number of described CSI-RS and higher level parameters pmi-RI-Report, if the port number of described CSI-RS is 1, feedback channel quality indication (CQI), not feeding back precoding matrix indication (PMI) and order indication (RI); If the port number of described CSI-RS is greater than 1 and have higher level parameters pmi-RI-Report, feed back PMI, RI and CQI; If the port number of described CSI-RS is greater than 1 and do not have higher level parameters pmi-RI-Report, feed back RI and CQI.
Further, feedback system determination module is determined the second parameter y of feedback system according to the port number of CSI-RS, according to CSI-RS port number, determine whether only to have CQI feedback, if port number equals 1, only have CQI feedback, otherwise have RI/CQI feedback or RI/PMI/CQI feedback.Feedback system determination module is selected a kind of feedback system: PMI, RI and CQI, RI and CQI according to higher level parameters pmi-RI-Report again from predefined two kinds of feedback systems.
Further, the transmission mode of described high-level signaling configuration is transmission mode 9, and during periodic feedback, if definite feedback model the second parameter y is 0, the first parameter x of described feedback model is 1 or 2 o'clock, and definite feedback model is respectively pattern 1-0, pattern 2-0; If definite feedback model the second parameter y is greater than 0, the first parameter x of described feedback model is 1 or 2, and definite feedback model is respectively pattern 1-1, pattern 2-1.
Further, the transmission mode of described high-level signaling configuration is transmission mode 9, during non-periodic feedback, if definite feedback model the second parameter y is 0, the first parameter x of described feedback model is 1,2 or 3 o'clock, and definite feedback model is respectively pattern 1-0, pattern 2-0, mode 3-0; If definite feedback model the second parameter y is greater than 0, the first parameter x of described feedback model divides 1,2 or 3, and definite feedback model is respectively pattern 1-2, pattern 2-2 or mode 3-1.
Intelligible, the functional module that the present invention is only different from prior art to subscriber equipment is described, and to other functional modules, the present invention is not specifically limited.
In sum, the port number of the present invention by CSI-RS and indicate whether feeding back precoding matrix indication (PMI) and order indicates the indication information of (RI) to determine whether to feed back PMI/RI, make the transmission mode of R11 can support the switching of three kinds of feedback system types, thereby can improve flexibility, performance and the minimizing feedback overhead of system.
These are only preferred case study on implementation of the present invention; be not limited to the present invention; the present invention also can have other various embodiments; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art can make according to the present invention various corresponding changes and distortion, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, and in some cases, can carry out shown or described step with the order being different from herein, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
Claims (12)
1. a feedback method for channel condition information, is characterized in that,
Subscriber equipment, according to the port number of the channel condition information-reference symbol (CSI-RS) of base station side configuration and pre-coding matrix indication-order indication-report (pmi-RI-Report) parameter, determines that the feedback system of channel condition information is for wherein a kind of below:
Feeding back precoding matrix indication (PMI), order indication (RI) and channel quality indication (CQI); Feedback RI and CQI; Feedback CQI.
2. the method for claim 1, is characterized in that,
Described subscriber equipment determines whether only to feed back CQI according to the port number of described CSI-RS, and the port number of described CSI-RS is 1 o'clock, determines that feedback system is for only feeding back CQI; The port number of described CSI-RS is greater than at 1 o'clock, according to described pmi-RI-Report parameter, selects wherein a kind of in following two kinds of feedback systems: feedback PMI, RI and CQI; Feedback RI and CQI.
3. the method for claim 1, is characterized in that, described subscriber equipment is according to the port number of described CSI-RS and described pmi-RI-Report parameter,
If the port number of described CSI-RS is 1, determine that feedback system is: feedback CQI;
If the port number of described CSI-RS is greater than 1 and have a described pmi-RI-Report parameter, determine that feedback system is: feedback PMI, RI and CQI;
If the port number of described CSI-RS is greater than 1 and do not have a described pmi-RI-Report parameter, determine that feedback system is: feedback RI and CQI.
4. method as claimed in claim 3, is characterized in that, for current transmission mode N, wherein N is more than or equal to 9 positive integer, and described subscriber equipment is determined the feedback system of channel condition information in such a way:
Described subscriber equipment is determined the second parameter y of feedback model x-y according to the port number of the described CSI-RS of base station side configuration, the port number of described CSI-RS is 1 o'clock, and y is 0; The port number of described CSI-RS is greater than at 1 o'clock, and y is greater than 0;
Described subscriber equipment, according to the first parameter x of the feedback model of described the second parameter y determining and base station side configuration, is determined feedback model x-y; Wherein x represents CQI feedback kind, and x is positive integer; Y represents PMI feedback kind, and y is 0 or positive integer;
Described subscriber equipment is selected wherein a kind of in the following two kinds of feedback systems in described feedback model x-y according to the described pmi-RI-Report parameter of base station side configuration: feedback PMI, RI and CQI; Feedback RI and CQI.
5. method as claimed in claim 4, is characterized in that,
Described subscriber equipment is determined feedback model x-y according to described the first parameter x and described the second parameter y, specifically comprises:
For periodic feedback, described the second parameter y is 0, and described the first parameter x is 1 or 2 o'clock, and definite feedback model is respectively pattern 1-0, pattern 2-0; Described the second parameter y is greater than 0, and described the first parameter x is 1 or 2 o'clock, and definite feedback model is respectively pattern 1-1, pattern 2-1.
6. method as claimed in claim 3, is characterized in that, for current transmission mode N, N is more than or equal to 9 positive integer, and described subscriber equipment is determined the feedback system of channel condition information in such a way:
Described subscriber equipment, according to the first parameter x and the second parameter y of base station side configuration, is determined feedback model x-y; Wherein, the port number of described CSI-RS is 1 o'clock, and y is 0; The port number of described CSI-RS is greater than at 1 o'clock, and y is greater than 0;
Described subscriber equipment is selected wherein a kind of in the following two kinds of feedback systems in described feedback model Mode x-y according to the described pmi-RI-Report parameter of base station side configuration: feedback PMI, RI and CQI; Feedback RI and CQI.
7. the method as described in claim 4 or 6, is characterized in that, described subscriber equipment is determined feedback model x-y according to described the first parameter x and described the second parameter y, specifically comprises:
For non-periodic feedback, described the second parameter y is 0, and described the first parameter x is 1,2 or 3 o'clock, and definite feedback model is respectively pattern 1-0, pattern 2-0, mode 3-0; Described the second parameter y is greater than 0, and described the first parameter x is 1,2 or 3 o'clock, and definite feedback model is respectively pattern 1-2, pattern 2-2 or mode 3-1.
8. a subscriber equipment, is characterized in that, described subscriber equipment comprises:
Feedback system determination module, for according to port number and the pmi-RI-Report parameter of the CSI-RS of base station side configuration, determines that the feedback system of channel condition information is for wherein a kind of below: feedback PMI, RI and CQI; Feedback RI and CQI; Feedback CQI;
Feedback module, for feeding back corresponding channel condition information according to the described feedback system of determining.
9. subscriber equipment as claimed in claim 8, is characterized in that,
Described feedback system determination module, for determining whether only to feed back CQI according to the port number of described CSI-RS, the port number of described CSI-RS is 1 o'clock, determines that feedback system is for only feeding back CQI; The port number of described CSI-RS is greater than at 1 o'clock, according to described pmi-RI-Report parameter, selects wherein a kind of in following two kinds of feedback systems: feedback PMI, RI and CQI; Feedback RI and CQI.
10. subscriber equipment as claimed in claim 8 or 9, is characterized in that,
Described feedback system determination module, for according to the port number of described CSI-RS and described pmi-RI-Report parameter,
If the port number of described CSI-RS is 1, determine that feedback system is: feedback CQI;
If the port number of described CSI-RS is greater than 1 and have a described pmi-RI-Report parameter, determine that feedback system is: feedback PMI, RI and CQI;
If the port number of described CSI-RS is greater than 1 and do not have a described pmi-RI-Report parameter, determine that feedback system is: feedback RI and CQI.
11. subscriber equipmenies as claimed in claim 10, is characterized in that,
Described feedback system determination module is used for, and for current transmission mode N, wherein N is more than or equal to 9 positive integer, determines in such a way the feedback system of channel condition information:
The the second parameter y that determines feedback model x-y according to the port number of the described CSI-RS of base station side configuration, the port number of described CSI-RS is 1 o'clock, y is 0; The port number of described CSI-RS is greater than at 1 o'clock, and y is greater than 0;
According to the first parameter x of the feedback model of the second described parameter y determining and base station side configuration, determine feedback model x-y; Wherein x represents CQI feedback kind, and x is positive integer; Y represents PMI feedback kind, and y is 0 or positive integer;
According to the described pmi-RI-Report parameter of base station side configuration, select wherein a kind of in the following two kinds of feedback systems in described feedback model x-y: feedback PMI, RI and CQI; Feedback RI and CQI.
12. subscriber equipmenies as claimed in claim 10, is characterized in that,
Described feedback system determination module is used for, and for current transmission mode N, wherein N is more than or equal to 9 positive integer, determines in such a way the feedback system of channel condition information:
The first parameter x and the second parameter y according to base station side configuration, determine feedback model x-y; Wherein, the port number of described CSI-RS is 1 o'clock, and y is 0; The port number of described CSI-RS is greater than at 1 o'clock, and y is greater than 0;
According to the described pmi-RI-Report parameter of base station side configuration, select wherein a kind of in the following two kinds of feedback systems in described feedback model x-y: feedback PMI, RI and CQI; Feedback RI and CQI.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210275375.XA CN103580812B (en) | 2012-08-03 | 2012-08-03 | A kind of feedback method and user equipment of channel state information |
| PCT/CN2013/080596 WO2014019530A1 (en) | 2012-08-03 | 2013-08-01 | Method for feeding back channel state information and user equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210275375.XA CN103580812B (en) | 2012-08-03 | 2012-08-03 | A kind of feedback method and user equipment of channel state information |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103580812A true CN103580812A (en) | 2014-02-12 |
| CN103580812B CN103580812B (en) | 2019-08-23 |
Family
ID=50027278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210275375.XA Active CN103580812B (en) | 2012-08-03 | 2012-08-03 | A kind of feedback method and user equipment of channel state information |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103580812B (en) |
| WO (1) | WO2014019530A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106301509A (en) * | 2015-05-21 | 2017-01-04 | 电信科学技术研究院 | A kind of channel state information feedback method and terminal |
| CN108270472A (en) * | 2016-12-30 | 2018-07-10 | 华为技术有限公司 | Method, base station and the terminal of code book is configured |
| CN108631847A (en) * | 2017-03-24 | 2018-10-09 | 华为技术有限公司 | Method, terminal device and the network equipment of transmitting channel state information |
| WO2018201447A1 (en) * | 2017-05-05 | 2018-11-08 | Qualcomm Incorporated | Procedures for differential csi reporting |
| WO2018201962A1 (en) * | 2017-05-05 | 2018-11-08 | 华为技术有限公司 | Information processing method and device |
| CN110278013A (en) * | 2014-12-23 | 2019-09-24 | 华为技术有限公司 | A kind of channel measurement and feedback method, the network equipment and system |
| CN111294756A (en) * | 2019-03-29 | 2020-06-16 | 北京展讯高科通信技术有限公司 | Resource allocation method and device for V2X service, storage medium, terminal and base station |
| US20220312356A1 (en) * | 2013-02-14 | 2022-09-29 | Blackberry Limited | Small Cell Demodulation Reference Signal and Initial Synchronization |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110637428B (en) * | 2017-06-16 | 2022-01-28 | 中兴通讯股份有限公司 | Channel state information report transmission |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101873647B (en) * | 2009-04-22 | 2012-07-18 | 中兴通讯股份有限公司 | Non-periodic channel quality information transmission method |
| US9042841B2 (en) * | 2010-09-17 | 2015-05-26 | Samsung Electronics Co., Ltd. | System and method for PUCCH subband feedback signaling in a wireless network |
| CN102469496B (en) * | 2010-11-05 | 2014-12-17 | 大唐移动通信设备有限公司 | Method and device for reporting channel quality information |
| CN102594526B (en) * | 2011-01-07 | 2014-05-07 | 华为技术有限公司 | Channel quality feedback method and communication equipment |
| CN102111246B (en) * | 2011-01-12 | 2017-03-29 | 中兴通讯股份有限公司 | The method and user equipment of feeding back channel state information |
| CN102291212B (en) * | 2011-08-12 | 2014-06-18 | 电信科学技术研究院 | Feedback method and device of channel state information |
-
2012
- 2012-08-03 CN CN201210275375.XA patent/CN103580812B/en active Active
-
2013
- 2013-08-01 WO PCT/CN2013/080596 patent/WO2014019530A1/en active Application Filing
Non-Patent Citations (2)
| Title |
|---|
| 3GPP: "《CQI enhancement for Rel-10 MU MIMO》", 《3GPP TST RAN WG1#62BITS R1-105133》 * |
| 3GPP: "《Periodic CQI/PMI/RI Reporting with CA》", 《3GPP TSG RAN WG1#62BIS R1-105365》 * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11832201B2 (en) * | 2013-02-14 | 2023-11-28 | Malikie Innovations Limited | Small cell demodulation reference signal and initial synchronization |
| US20220312356A1 (en) * | 2013-02-14 | 2022-09-29 | Blackberry Limited | Small Cell Demodulation Reference Signal and Initial Synchronization |
| US10951276B2 (en) | 2014-12-23 | 2021-03-16 | Huawei Technologies Co., Ltd. | Channel measurement and feedback method, network device, and system |
| CN110278013B (en) * | 2014-12-23 | 2022-01-14 | 华为技术有限公司 | Channel measurement and feedback method, network equipment and system |
| CN110278013A (en) * | 2014-12-23 | 2019-09-24 | 华为技术有限公司 | A kind of channel measurement and feedback method, the network equipment and system |
| CN106301509B (en) * | 2015-05-21 | 2020-01-17 | 电信科学技术研究院 | Channel state information feedback method and terminal |
| CN106301509A (en) * | 2015-05-21 | 2017-01-04 | 电信科学技术研究院 | A kind of channel state information feedback method and terminal |
| CN108270472A (en) * | 2016-12-30 | 2018-07-10 | 华为技术有限公司 | Method, base station and the terminal of code book is configured |
| US11101955B2 (en) | 2017-03-24 | 2021-08-24 | Huawei Technologies Co., Ltd. | Channel state information transmission method, terminal device, and network device |
| CN108631847A (en) * | 2017-03-24 | 2018-10-09 | 华为技术有限公司 | Method, terminal device and the network equipment of transmitting channel state information |
| WO2018201962A1 (en) * | 2017-05-05 | 2018-11-08 | 华为技术有限公司 | Information processing method and device |
| WO2018201447A1 (en) * | 2017-05-05 | 2018-11-08 | Qualcomm Incorporated | Procedures for differential csi reporting |
| CN111294756A (en) * | 2019-03-29 | 2020-06-16 | 北京展讯高科通信技术有限公司 | Resource allocation method and device for V2X service, storage medium, terminal and base station |
| CN111294756B (en) * | 2019-03-29 | 2022-02-01 | 北京紫光展锐通信技术有限公司 | Resource allocation method and device for V2X service, storage medium, terminal and base station |
| US12034674B2 (en) | 2019-03-29 | 2024-07-09 | Beijing Unisoc Communications Technology Co., Ltd. | Resource allocation method and apparatus for V2X service, and storage medium, terminal and base station |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014019530A1 (en) | 2014-02-06 |
| CN103580812B (en) | 2019-08-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102111246B (en) | The method and user equipment of feeding back channel state information | |
| CN102291213B (en) | A kind of terminal and method for calculating channel quality indication (CQI) information | |
| CN103780358B (en) | A kind of method and terminal of determining channel state information | |
| KR102508150B1 (en) | Method for reporting channel state using aperiodic channel state information-reference signal and apparatus therefor | |
| EP3657745B1 (en) | Method and device for estimating channel in wireless communication system | |
| CN104604173B (en) | Method and its equipment for the feedback for providing channel condition information in a wireless communication system | |
| US9301175B2 (en) | Configuration of interference measurement resources for enhanced downlink measurements and MU-MIMO | |
| US8817647B2 (en) | Priority rules of periodic CSI reporting in carrier aggregation | |
| CN104885502B (en) | The method and its equipment of interference are measured in a wireless communication system | |
| CN103580812A (en) | Channel state information feedback method and user equipment | |
| CN105991222B (en) | Configuration information notification method, acquisition method, device, base station and terminal | |
| CN107210857A (en) | Method and its device for reporting channel state in a wireless communication system | |
| US10033507B2 (en) | Method for performing channel estimation, and apparatus therefor | |
| CN105308889A (en) | Method for interference cancellation in wireless communication system and apparatus therefor | |
| CN105359569A (en) | Method for channel state report in wireless communication system and apparatus therefor | |
| CN102595469A (en) | Determination method of channel quality indication information | |
| CN108370266A (en) | The method and apparatus that channel state information is sent and received in the wireless communication system using multiple antennas | |
| CN114710239A (en) | Method and apparatus for transmitting or receiving downlink signal in wireless communication system | |
| CN107466452A (en) | The method and its device of reporting channel state | |
| CN105191174A (en) | Method for canceling interference in wireless communication system and apparatus therefor | |
| CN108352879A (en) | Method and its equipment for reporting channel state in a wireless communication system | |
| US10433293B2 (en) | Method and apparatus for receiving or transmitting downlink signal in a wireless communication system | |
| CN105007600A (en) | Downlink data rate matching method and apparatus | |
| EP4167509A1 (en) | Control information sending method and receiving method, sender and receiver | |
| CN106464408A (en) | Method and apparatus for cancelling interference and receiving signal in wireless communication system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |