WO2012022249A1 - 一种信道状态信息csi反馈指示方法和基站及系统 - Google Patents
一种信道状态信息csi反馈指示方法和基站及系统 Download PDFInfo
- Publication number
- WO2012022249A1 WO2012022249A1 PCT/CN2011/078447 CN2011078447W WO2012022249A1 WO 2012022249 A1 WO2012022249 A1 WO 2012022249A1 CN 2011078447 W CN2011078447 W CN 2011078447W WO 2012022249 A1 WO2012022249 A1 WO 2012022249A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- feedback mode
- csi
- base station
- feedback
- independent
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
-
- 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
- H04B7/06—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
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
-
- 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
-
- 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
- H04B7/0658—Feedback reduction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
- H04L5/0057—Physical resource allocation for CQI
-
- 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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1854—Scheduling and prioritising arrangements
Definitions
- the present invention relates to the field of wireless communication technologies, and in particular, to a channel state information CSI feedback indication method, a base station, and a system. Background technique
- the UE User Equipment
- the CSI includes RI ( Rank Indication) information, CQI (Channel Quality Indicator) information, and PMI (Precoding Matrix Indicator) information.
- the specific feedback may be periodically fed back using a PUCCH (Physical Uplink Control Channel), or may be aperiodic feedback using a PUSCH (Physical Uplink Share Channel).
- PUCCH Physical Uplink Control Channel
- PUSCH Physical Uplink Share Channel
- the RI information is separately encoded, the CQI + PMI information is separately encoded, and the ACK/NACK information is also separately encoded.
- These uplink control information are multiplexed together with the uplink data, as shown in FIG. After multiplexing and interleaving, the mapping of the uplink data symbols to the physical resources is performed, the CQI/PMI information is mapped first, and the uplink data is mapped to the remaining resources.
- ACK/NACK and RI information are obtained by puncturing the uplink data. Four columns of symbols on both sides of the pilot are placed in the time domain and the frequency domain is ACK/NACK from low frequency to high frequency, followed by ACK/NACK. The column symbol first maps the RI information from the low frequency to the high frequency in the post-frequency domain, as shown in Figure 2.
- the aperiodic CSI transmission in the PUSCH is through the UL grant. Triggered by the lbit CQI request message in the Uplink grant (uplink grant indication). When the UE checks that the CQI request is set to 1, the related CSI information is organized and transmitted in the PUSCH according to the pre-configured feedback mode, otherwise it is not sent.
- LTE-Advanced system in order to support a wider system bandwidth than the LTE system, such as 100 MHz, it is necessary to connect resources of multiple LTE carriers (also referred to as component carriers) in two ways:
- a plurality of consecutive LTE carriers are aggregated to provide a larger transmission bandwidth for LTE-A; 2) a plurality of discontinuous LTE carriers are aggregated to provide a larger transmission bandwidth for LTE-A.
- a plurality of discontinuous LTE carriers are aggregated to provide a larger transmission bandwidth for LTE-A.
- an example of discontinuous carrier aggregation is given.
- the research orientation of the standardization organization is that the consensus for the design of the carrier aggregation system is that the design on each carrier remains as consistent as possible with LTE Rel-8, thereby ensuring that the terminal of the LTE Rel-8 system can work normally on each component carrier.
- the research requirements of the LTE-A system have been formulated to support aggregation of up to five component carriers, and one UE supports the maximum reception/transmission of data on five component carriers at the same time.
- Symmetrical and asymmetric carrier aggregation can be configured from a system perspective, that is, the system supports uplink and downlink symmetric or asymmetric carrier configurations; it can also be allocated based on the UE, that is, one UE is allocated as uplink and downlink symmetric or asymmetric. Carrier configuration.
- One downlink carrier can be paired with one or more uplink carriers, and the other uplink carrier can also be paired with one or more downlink carriers. .
- the pairing relationship is as shown in FIG. 4A and FIG. 4B.
- An arrow connection between the uplink carrier and the downlink carrier indicates that there is a pairing relationship between the two, and a pair of downlink/uplink carriers having a link relationship is called a Cell. (Cell), the uplink-downlink carrier correspondence in each Cell is sent to all terminals in the Cell through system broadcast.
- LTE-A Rel-10 supports uplink and downlink symmetric and asymmetric carrier configurations from the perspective of the UE.
- UE1 is configured as a carrier configuration with uplink and downlink symmetry.
- the carrier pairing relationship between the two cells is broadcast in the respective system messages.
- the content is the same.
- UE2 is configured as an uplink and downlink asymmetric carrier configuration.
- the link relationship between the UL CC3 and the DL CC (Downlink Component Carrier) 3 is valid for the UE, and the DL CC4
- the link relationship is invalid for the UE, and the DL CC4 is referred to as the isolated downlink member carrier "Standalone DL CC".
- the number of uplink and downlink carriers in the system is symmetric, and has a corresponding link relationship, and a UE is allocated an asymmetric number of uplink and downlink carriers in the system, as shown in FIG.
- the DL CC2 in the figure is also called "Standalone DL CC". This configuration is also supported by LTE-A Rel-10.
- the terminal with the uplink and downlink symmetric aggregation capability and the asymmetric aggregation capability will be reported in the Rel-10.
- the terminal reports its uplink and downlink carrier aggregation capability to the base station in the initial access process. .
- the base station cannot exceed the uplink and downlink carrier aggregation capability of the terminal.
- a carrier activation/deactivation scheme is introduced in the LTE-A Rel-10, and the activation and deactivation of the downlink carrier is triggered by the MAC CE (MAC Control Element), and the UE performs CSI only on the activated DL CC. Measurement and feedback.
- MAC CE MAC Control Element
- LTE Rel-8 aperiodic CSI feedback is triggered by the CQI request 1 bit information bit in the UL Grant.
- CQI request 1 bit design in the UL grant follows LTE Rel-8 and is not extended or modified.
- the specific multi-carrier non-periodic CSI feedback schemes are as follows:
- Method 1 Simultaneous feedback of aperiodic CSI information of multiple DL CCs
- the CQI request 1 bit information in the UL grant triggers the UE to place the non-period CSI information of all activated DL CCs in the PUSCH of the UL grant scheduling and feed back.
- This solution is the simplest, but the disadvantage is that the feedback overhead is large. Especially when the UE configures multiple downlink component carriers (maximum 5) and the physical resources of the PUSCH scheduling are small, the PUSCH transmission performance has a large impact.
- Method 2 The aperiodic CSI information of each DL CC is separately fed back, and is specifically divided into the following two types of methods. This method avoids the feedback overhead caused by simultaneously feeding back CSI information of multiple DL CCs, but has corresponding limitations. Sex. Method 2-1: CQI request 1 bit information in the UL grant, triggering the UE to send the aperiodic CSI information of the DL CC transmitting the UL grant by the network side, and placing the feedback in the PUSCH scheduled by the UL grant.
- a dotted arrow indicates a configuration of uplink cross-carrier scheduling, that is, PUSCH transmission of UL CC1 and UL CC2 are both UL on DL CC1.
- Grant scheduling according to the existing conclusion, at this time, DL CC2 does not send UL grant, and its acyclic CSI feedback of DL CC2 cannot be triggered;
- the isolated downlink component carrier will not transmit UL grant, so its aperiodic CSI feedback cannot be triggered either;
- Method 2-2 CQI request 1 bit information in the UL grant, triggering the UE to place the aperiodic CSI information of the DL CC having the system level pairing link relationship with the UL grant scheduled UL CC in the PUSCH of the UL grant scheduling. .
- the embodiments of the present invention provide a CSI feedback indication and feedback method, a UE, a base station, and a wireless communication system, and provide a CSI feedback scheme suitable for application to a multi-carrier system.
- the present invention provides a CSI feedback indication method, including:
- the base station configures a CSI feedback mode according to the UE.
- the base station sends the configured CSI feedback mode to the UE by using the configuration signaling, and indicates the CSI feedback mode used when the UE reports the CSI aperiodically.
- the invention also provides a CSI feedback method, including:
- the UE receives the configuration signaling sent by the base station, and acquires a CSI feedback mode configured by the base station for the UE.
- the CSI is used to feed back the CSI for the CSI feedback mode configured by the base station.
- the invention also provides a base station, comprising:
- a feedback mode configuration unit configured to configure a CSI feedback mode for the UE
- the feedback mode indication unit is configured to send the configured CSI feedback mode to the UE by using configuration signaling, and indicate a CSI feedback mode that is used when the UE reports the CSI aperiodically.
- the present invention also provides a UE, including:
- a feedback mode acquiring unit configured to receive configuration signaling sent by the base station, and obtain a CSI feedback mode configured by the base station for the UE;
- the CSI feedback unit is configured to: when the aperiodic CSI is triggered to be triggered, use the CSI feedback mode that the base station configures to feed back CSI.
- the invention also provides a wireless communication system, comprising:
- the base station is configured to configure a CSI feedback mode for the UE, and send the configured CSI feedback mode to the UE by using the configuration signaling, and indicate a CSI feedback mode that is used when the UE reports the CSI aperiodically;
- the UE receives the configuration signaling sent by the base station, and obtains the CSI feedback mode configured by the base station for the UE, and determines that the CSI feedback mode is used to feed the CSI to the CSI when the aperiodic CSI is reported.
- the CSI feedback indication and feedback method, the UE, the base station, and the wireless communication system provided by the present invention have the following beneficial effects:
- the base station can select an appropriate aperiodic CSI feedback mode according to the carrier configuration of the system or the terminal, thereby improving system design flexibility. . DRAWINGS
- 1 is a flow chart of multiplexing uplink control information and uplink data in the prior art
- FIG. 2 is a schematic diagram of mapping of uplink control information on uplink physical resources in the prior art
- FIG. 3 is a schematic diagram of carrier aggregation used in an LTE-A system
- FIG. 4A is a schematic diagram of an asymmetric configuration of uplink and downlink carriers given from a link relationship of a system perspective
- FIG. 4B is a schematic diagram of a symmetric configuration of uplink and downlink carriers given from a link relationship of a system perspective
- FIG. 5 is a perspective given from a UE perspective. Schematic diagram of asymmetric/symmetric configuration of uplink and downlink carriers
- FIG. 6 is a schematic diagram of asymmetric configuration of uplink and downlink carriers from the perspective of UE
- FIG. 7 is a flowchart of a CSI feedback indication method according to an embodiment of the present invention
- FIG. 8 is a flowchart of a CSI feedback method according to an embodiment of the present invention.
- FIG. 9 is a structural diagram of a base station according to an embodiment of the present invention.
- FIG. 10 is a structural diagram of a UE according to an embodiment of the present invention. detailed description
- the base station needs to obtain CSI feedback of multiple DL CCs measured by the UE, thereby performing multi-carrier scheduling.
- the CSI fed back by the UE may include, for example, RI information, CQI information, and broadband PMI information, where the CQI includes a wideband CQI and a subband CQI.
- the CQI request 1 bit design in the UL grant in the existing multi-carrier system follows the LTE Rel-8, and the specific multi-carrier aperiodic CSI feedback scheme has its own advantages and disadvantages, and is applicable to different systems or carrier configuration of the UE.
- the invention provides a CSI feedback indication method. As shown in Figure 7, the method includes:
- Step S701 The base station configures a CSI feedback mode for the UE.
- the terminal in the LTE-A Rel-10 system will have the uplink and downlink symmetric aggregation capability and the non-symmetric aggregation capability.
- the terminal will report its uplink and downlink carrier aggregation capability to the base station in the initial access process.
- the base station cannot exceed the uplink and downlink carrier aggregation capabilities of the terminal.
- the base station configures a corresponding CSI feedback mode for the UE according to the carrier configuration of the UE in the multi-carrier system.
- the base station can flexibly design a CSI feedback mode suitable for the UE carrier configuration according to the carrier configuration of the UE.
- the CSI feedback mode can be selected in combination with the scenario, and the system design flexibility is increased on the one hand.
- Step S702 The base station sends the configured CSI feedback mode to the UE by using configuration signaling, and indicates a CSI feedback mode that is used when the UE reports the CSI aperiodically.
- the present invention enables the base station to select a suitable aperiodic C SI feedback mode for the UE in different scenarios, avoiding the disadvantages of using a feedback mechanism in the prior art and not being able to flexibly design the CSI feedback mode of the system. defect.
- the CSI feedback mode suitable for the UE is selected by the base station according to the carrier configuration of the UE.
- the CSI feedback mode suitable for the UE is selected from the existing CSI feedback mode. Configuring any feedback mode selected in the feedback mode, where the system configuration mode includes a joint feedback mode and a first independent feedback mode, or the system configuration mode includes a joint feedback mode and a second independent feedback mode, or the system configuration
- the feedback method includes a joint feedback method, a first independent feedback method, and a second independent feedback method, where:
- the CSI of all activated DL CCs of the UE is placed in the PUSCH of the UL grant scheduling feedback;
- the advantage of the feedback mode is that the CSI can be fed back.
- the disadvantage is that the feedback overhead is large. Therefore, although it is not suitable for configuring the feedback mode for all UEs, it is suitable for UEs that cannot fully feed back the CSI for other feedback methods.
- the advantage of the feedback mode is that the aperiodic CSI information of each DL CC is separately fed back, which avoids the feedback overhead caused by simultaneously feeding back CSIs of multiple DL CCs, but has the disadvantage of being unsuitable for channel quality between DL CCs configured by the UE. If the difference is greater than the set threshold, the base station configures an application scenario for cross-carrier scheduling.
- the CSI of the DL CC having the system-level pairing link relationship with the UL grant scheduled UL CC is placed in the PUSCH of the UL grant scheduling feedback.
- the advantage of the feedback mode is that the aperiodic CSI information of each DL CC is separately fed back, which avoids the feedback overhead caused by simultaneously feeding back CSIs of multiple DL CCs, but the disadvantages are on the uplink and downlink of the UE.
- the wave is asymmetrically configured, the acyclic CSI information of the DL CC cannot be fully fed back.
- a specific application scenario may be selected, and other feedback modes suitable for the UE may be selected.
- the base station selects the CSI feedback mode that is most suitable for the UE according to the advantages and disadvantages of the specific feedback mode, and notifies the UE by configuration signaling.
- the foregoing configuration signaling in this embodiment may be RRC (Radio Resource Control) signaling (cell-specific or UE-specific), or MAC CE signaling specific to the UE, or the UE.
- a dedicated PDCCH (Physical Downlink Control Channel) signaling can also be the signaling of the CSI feedback mode of the newly defined feedback configuration.
- the implementation of the CSI feedback mode configured by the configuration signaling may be performed by setting corresponding identification information for different feedback modes, and carrying the CSI feedback mode identification information of the corresponding configuration in the configuration signaling.
- the following describes the carrier configuration of the UE in the embodiment of the present invention and the manner in which the various feedback modes are used to configure the CSI.
- the first independent feedback mode or the second independent feedback mode is configured for the UE.
- the base station sends the UL grant DL CC.
- CSI a first independent feedback mode that is placed in the PUSCH scheduled by the UL grant;
- the UE places the CSI of the DL CC with the system-level pairing link relationship with the UL grant scheduled UL CC. Feedback in the PUSCH scheduled by the UL grant.
- the CSI of the UL grant DL CC is not sent without feedback using the paired DL CC. Moreover, due to the symmetrical configuration of the upper and lower carriers, there is no case where the CSI of the isolated DL CC is not fed back.
- the following configuration manner may also be adopted: when the channel quality difference between the DL CCs configured by the UE meets the setting requirement, the first independent configuration is configured for the UE. Feedback mode or second independent feedback mode; between the DL CCs configured by the UE When the channel quality difference does not meet the setting requirement, the second independent feedback mode is configured for the UE.
- the base station determines that the channel quality difference between the plurality of DL CCs configured to the UE is relatively large, cross-carrier scheduling is performed. As shown in FIG. 5, when the base station determines that the interference between DL CC1 and DL CC2 of UE1 is relatively serious, the UL grant of the scheduled UL CC2 that should be transmitted in the DL CC2 is transmitted across the carrier on the DL CC1. If the channel quality between the DL CCs is quite different, the second independent feedback method described above can be used. Otherwise, the first independent feedback method can be used and the CSI information can be well fed back.
- the base station can determine whether the UE uses the first independent feedback mode or the second feedback mode according to the channel quality difference between the DL CCs configured by the UE.
- a joint feedback mode is configured for the UE.
- the CSI information of the isolated DL CC cannot be fed back to the UE that is asymmetrically configured for the uplink and downlink carriers, and the second independent feedback mode is used to forward the CSI information of the isolated DL CC.
- the UE uses the joint feedback method. Since the number of asymmetric UEs in the system is limited, the system does not cause large resource overhead.
- the manner of the CSI configured by the UEs in different CC configurations is not limited to the foregoing manners in the embodiments of the present invention.
- the configuration may be flexibly configured according to the advantages and disadvantages of each feedback mode.
- the two independent feedback modes may also select only one type for configuration.
- the CSI feedback mode configured by the base station includes two types: a joint feedback mode and an independent feedback mode.
- the base station when the base station can notify the UE of the CSI feedback mode by using configuration signaling, when the carrier configuration of the UE is updated or other information is updated, and the CSI feedback mode most suitable for the UE needs to be reselected, the base station may The CSI feedback mode configuration update is performed in real time and the UE is notified.
- a CSI feedback method is provided, as shown in FIG. 8, including:
- Step S801 the UE receives the configuration signaling sent by the base station, and acquires, by the base station, the configuration of the UE.
- CSI feedback method
- the manner of configuring the signaling may be specifically RRC signaling (cell-specific or UE-specific), or MAC CE signaling specific to the UE, or PDCCH signaling specific to the UE. Of course, it may also be the signaling of the CSI feedback mode of the newly defined feedback configuration.
- Step S802 When the UE determines to trigger the aperiodic CSI reporting, the CSI is used to feed back the CSI for the CSI feedback mode configured by the base station.
- the UE determines to trigger the aperiodic CSI report, and may use the design of the LTE Rel-8, and specifically includes: the UE determines to trigger the aperiodic CSI reporting when the CQI request in the UL grant is set according to the UL grant sent by the base station. When the CQI request in the UL grant is not set, the acyclic CSI report is not performed.
- the UE feeds back the CSI according to the CSI feedback mode indicated by the base station, and avoids the shortcomings of the UE uniformly reporting the CSI in the same feedback manner.
- the UE uses the CSI feedback mode feedback CSI configured by the base station, which includes:
- the UE places the CSI of all the activated DL CCs in the PUSCH of the UL grant scheduling feedback;
- the UE Determining, when the CSI feedback mode configured by the base station for the UE is the first independent feedback mode, the UE sends the CSI of the DL CC of the UL grant by the base station, and places the feedback in the PUSCH scheduled by the UL grant;
- the UE places the CSI of the DL CC with the system-level pairing link relationship with the UL grant scheduled UL CC, and places the PUSCH in the UL grant scheduling. Feedback.
- the CSI feedback manner acquired by the UE is a first independent feedback manner or a second independent feedback manner.
- the CSI feedback mode acquired by the UE is the first independent feedback mode or the second independent feedback, when the UL CC of the UE is symmetrically configured with the DL CC, and the channel quality difference between the DL CCs configured by the UE meets the setting requirement.
- the UL CC of the UE is symmetrically configured with the DL CC, and the UE is configured When the channel quality difference between the configured DL CCs does not meet the setting requirement, the CSI feedback mode acquired by the UE is the second independent feedback mode.
- the CSI feedback mode acquired by the UE is a joint feedback mode.
- the LTE Rel-8 can be used to determine the specific information in the feedback CSI. Specifically, the CSI information corresponding to the number of bits is selected and fed back according to the feedback mode configured by the base station for the UE.
- the UE uses the PUSCH for aperiodic feedback.
- the CSI has a variety of different feedback modes.
- the specific CQI/PMI feedback mode definitions are shown in Table 1:
- the optional feedback mode in each transmission mode is limited, as specified below, where
- Which feedback mode the UE specifically uses in a certain transmission mode is configured by the base station through higher layer signaling.
- the transmission mode corresponds to an optional feedback mode:
- Transmission mode 1 Feedback mode 2-0, feedback mode 3-0;
- Transmission mode 2 feedback mode 2-0, feedback mode 3-0;
- Transmission mode 3 feedback mode 2-0, feedback mode 3-0;
- Transmission mode 4 feedback mode 1-2, feedback mode 2-2, feedback mode 3-1;
- Transmission mode 5 feedback mode 3-1;
- Transmission mode 6 feedback mode 1-2, feedback mode 2-2, feedback mode 3-1;
- Transmission mode 7 Feedback mode 2-0, feedback mode 3-0.
- Transmission mode 1 single antenna port, using port 0;
- Transmission mode 2 transmit diversity
- Transmission mode 3 open loop spatial multiplexing
- Transmission mode 4 closed loop spatial multiplexing
- Transmission mode 5 MU-MIMO (Multiuser-Multiple Input Multiple Output)
- Transmission mode 7 single antenna port, using port 5;
- RI In LTE Rel-8, RI only feeds back in transmission mode 3 and transmission mode 4.
- RI is lbits information.
- the RI fed back when the base station is configured with 4 antenna ports is 2 bits of information.
- the number of defined subbands is related. The base station first interprets the RI information in the PUSCH, and interprets the CQI/PMI information according to the corresponding RANK layer number according to the corresponding format.
- the following uses the bit length corresponding to the feedback mode 1-2, the feedback mode 2-0, the feedback mode 2-2, the feedback mode 3-0, and the feedback mode 3-1 when the UE feeds back the CQI/PMI on the PUSCH.
- feedback mode 1-2 is a "wideband CQI+ multi-channel mode, including wideband CQI information of 1-2 spatial codewords (4 bits per codeword) and N subband PMI information, where N is the system.
- the number of sub-bands is as follows: The specific information is shown in Table 2:
- the feedback mode 2-0 is "the UE selects the subband CQI+ no ,, as shown in Table 3, the wideband CQI information bits including one codeword) and the differential CQI information (2 bits) of the M subband selected by the UE, Where L is the subband number indication information for selecting M subbands from the N subbands, and the values of N and M are both standard specifications and system bandwidth.
- Feedback mode 2-2 is the "UE select subband + multi PMI" mode, as shown in Table 4, including 1-2 spatial codewords of wideband CQI information (each 4bits) and 1-2 spatial codewords.
- the UE selects differential CQI information (each 2 bits) of M subbands and a subband PMI+-wideband PMI information.
- the feedback mode 3-0 is "high-level configuration sub-band CQI+ no ⁇ , as shown in Table 5, including a wideband CQI information bits) and N sub-band differential CQI information (2bits each).
- Feedback mode 3-1 is the "high-level configuration sub-band CQI + single ⁇ mode, as shown in Table 6, wide-band CQI information containing 1-2 spatial code words (each 4bits) and 1-2 spatial code words N
- the subbands have differential CQI information (each 2 bits) and one PMI information.
- a base station is provided. As shown in FIG. 9, the method includes: a feedback mode configuration unit 901, configured to configure a CSI feedback mode for the UE, and a feedback mode indication unit 902, configured to configure signaling Sending the configured CSI feedback mode to the UE, indicating the CSI feedback mode used by the UE when reporting the CSI aperiodically.
- a feedback mode configuration unit 901 configured to configure a CSI feedback mode for the UE
- a feedback mode indication unit 902 configured to configure signaling Sending the configured CSI feedback mode to the UE, indicating the CSI feedback mode used by the UE when reporting the CSI aperiodically.
- the feedback mode configuration unit 901 is specifically configured to configure a corresponding CSI feedback mode for the UE according to the carrier configuration of the UE.
- the feedback mode configuration unit 901 is specifically configured to configure a CSI feedback mode for the UE in a feedback manner selected by the system configuration feedback mode, where the system configuration mode includes a joint feedback mode and a first independent feedback mode, or The system configuration manner includes a joint feedback manner and a second independent feedback manner, or the system configuration feedback manner includes a joint feedback manner, a first independent feedback manner, and a second independent feedback manner.
- the joint feedback mode is specifically: the CSI of all the activated DL CCs of the UE is placed in the PUSCH of the UL grant scheduling feedback; the first independent feedback mode is specifically, the CSI of the DL CC that sends the UL grant by the base station is placed in the UL grant scheduling. Feedback in PUSCH; second independent feedback The method is specifically that the CSI of the DL CC having the system-level pairing link relationship with the UL grant scheduled UL CC is placed in the PUSCH of the UL grant scheduling feedback.
- the feedback mode configuration unit 901 is specifically configured to configure a first independent feedback mode or a second independent feedback mode for the UE when the UL CC and the DL CC of the UE are symmetrically configured.
- the feedback mode configuration unit 901 is specifically configured to: when the UL CC and the DL CC of the UE are symmetrically configured, and the channel quality difference between the DL CCs configured by the UE meets the setting requirement, configure the first independent a feedback mode or a second independent feedback mode; when the UL CC of the UE is symmetrically configured with the DL CC, and the channel quality difference between the DL CCs configured by the UE does not meet the setting requirement, configuring the second independent feedback for the UE the way.
- the feedback mode configuration unit 901 is specifically configured to configure a joint feedback mode for the UE when the UL CC and the DL CC of the UE are configured in a non-symmetric manner.
- the configuration signaling used by the feedback mode indication unit 902 is RRC signaling, or MAC CE signaling specific to the UE, or PDCCH signaling specific to the UE.
- a UE is provided in the embodiment of the present invention.
- the method includes: a feedback mode acquiring unit 101, configured to receive configuration signaling sent by a base station, and obtain a CSI feedback mode configured by the base station for the UE.
- the CSI feedback unit 102 is configured to: when the aperiodic CSI is triggered to be triggered, use the CSI feedback mode configured by the base station to feed back CSI.
- the CSI feedback unit 102 is specifically configured to determine to trigger the aperiodic CSI reporting when the CQI request in the UL grant is set according to the UL grant sent by the base station.
- the CSI feedback unit 102 is specifically configured to: when the CSI feedback mode configured by the base station for the UE is the joint feedback mode, the CSI of all the activated DL CCs is placed in the PUSCH of the UL grant scheduling feedback; determining the base station When the CSI feedback mode configured for the UE is the first independent feedback mode, the CSI of the DL CC in which the base station sends the UL grant is placed in the PUSCH scheduled by the UL grant, and the CSI configured by the base station for the UE is determined. When the feedback mode is the second independent feedback mode, the CSI of the DL CC having the system-level pairing link relationship with the UL grant scheduled UL CC is placed in the PUSCH of the UL grant scheduling feedback.
- the feedback mode obtaining unit 101 acquires when the UL CC and the DL CC of the UE are symmetrically configured.
- the CSI feedback mode is the first independent feedback mode or the second independent feedback mode.
- the feedback mode obtaining unit 101 is configured by the first independent feedback mode or the second when the UL CC of the UE is symmetrically configured with the DL CC, and the channel quality of the DL CC configured by the UE meets the setting requirement.
- the acquired CSI feedback mode is the second independent feedback mode.
- the feedback mode obtaining unit 101 obtains the CSI feedback mode in the joint feedback mode when the UL CC and the DL CC of the UE are asymmetrically configured.
- a wireless communication system is further provided in the embodiment of the present invention, including: a base station, configured to configure a CSI feedback mode for the UE, and configured to send the configured CSI feedback mode to the UE by using configuration signaling, indicating that the UE is not periodically reported.
- the CSI feedback mode used by the CSI the UE receives the configuration signaling sent by the base station, acquires the CSI feedback mode configured by the base station for the UE, and determines to trigger the base station when the aperiodic CSI is triggered. Feedback CSI is fed back to the CSI feedback mode configured for it.
- the base station in the embodiment of the present invention may specifically use the base station provided in the foregoing embodiment, where
- the UE may specifically use the UE provided in the foregoing embodiment.
- the present invention provides a scheme for multi-carrier CSI feedback using PUSCH in a multi-carrier system.
- the base station can select a suitable aperiodic CSI feedback mode according to the carrier configuration information of the UE and the carrier configuration of the system, thereby increasing the flexibility of the system design.
- the spirit and scope of the invention Thus, it is intended that the present invention cover the modifications and variations of the inventions
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP11817776.5A EP2575278B1 (en) | 2010-08-16 | 2011-08-16 | Indication method, base station, and system for csi feedback |
| KR1020127031549A KR101462415B1 (ko) | 2010-08-16 | 2011-08-16 | 채널 상태 정보(csi) 피드백 지시 방법 및 기지국과 시스템 |
| US13/701,018 US8750237B2 (en) | 2010-08-16 | 2011-08-16 | Method, base station and system for indicating CSI feedback |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010255329.4 | 2010-08-16 | ||
| CN2010102553294A CN102082636B (zh) | 2010-08-16 | 2010-08-16 | 一种信道状态信息csi反馈指示方法和基站及系统 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012022249A1 true WO2012022249A1 (zh) | 2012-02-23 |
Family
ID=44088398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2011/078447 Ceased WO2012022249A1 (zh) | 2010-08-16 | 2011-08-16 | 一种信道状态信息csi反馈指示方法和基站及系统 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8750237B2 (zh) |
| EP (2) | EP2897317B1 (zh) |
| KR (1) | KR101462415B1 (zh) |
| CN (1) | CN102082636B (zh) |
| WO (1) | WO2012022249A1 (zh) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013148347A1 (en) * | 2012-03-29 | 2013-10-03 | Qualcomm Incorporated | Channel state information reference signal (csi-rs) configuration and csi reporting restrictions |
| US20130343301A1 (en) * | 2012-06-22 | 2013-12-26 | Qualcomm Incorporated | TECHNIQUES FOR JOINT SUPPORT OF COORDINATED MULTIPOINT (CoMP) OPERATIONS AND CARRIER AGGREGATION (CA) |
Families Citing this family (54)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9209933B2 (en) * | 2009-06-11 | 2015-12-08 | Qualcomm Incorporated | Method and apparatus for dispatching a channel quality indicator feedback in multicarrier system |
| CN102082636B (zh) | 2010-08-16 | 2013-05-08 | 电信科学技术研究院 | 一种信道状态信息csi反馈指示方法和基站及系统 |
| CN102595596B (zh) * | 2011-01-10 | 2015-06-17 | 华为技术有限公司 | 一种csi的传输方法和装置 |
| CN102255694A (zh) * | 2011-07-19 | 2011-11-23 | 电信科学技术研究院 | 信道状态信息传输方法和设备 |
| CN102291223B (zh) * | 2011-08-05 | 2014-03-12 | 电信科学技术研究院 | 信道状态信息反馈指示及反馈方法和设备 |
| CN102281128B (zh) * | 2011-08-08 | 2014-07-30 | 电信科学技术研究院 | 信道状态信息反馈触发及反馈方法和设备 |
| CN102932111B (zh) * | 2011-08-10 | 2017-04-12 | 中兴通讯股份有限公司 | 无线信道状态信息上报方法及装置 |
| CN102938688B (zh) * | 2011-08-15 | 2015-05-27 | 上海贝尔股份有限公司 | 用于多维天线阵列的信道测量和反馈的方法和设备 |
| CN102291213B (zh) | 2011-08-15 | 2017-06-16 | 中兴通讯股份有限公司 | 一种计算信道质量指示信息的终端及方法 |
| CN103023621B (zh) * | 2011-09-23 | 2016-03-09 | 华为技术有限公司 | 传输信息的方法、用户设备和基站 |
| CN102315910A (zh) * | 2011-09-30 | 2012-01-11 | 中兴通讯股份有限公司 | 一种信道状态信息的发送方法和用户设备 |
| WO2013091231A1 (zh) * | 2011-12-23 | 2013-06-27 | 华为技术有限公司 | 处理层指示ri的方法、装置及系统 |
| CN104081827B (zh) * | 2012-01-27 | 2018-04-13 | 三星电子株式会社 | 用于非周期性的信道状态信息的多个过程的报告 |
| CN103368697B (zh) * | 2012-03-26 | 2018-08-17 | 中兴通讯股份有限公司 | 协作cqi和/或节点间的pci的反馈方法及装置 |
| CN103378950B (zh) | 2012-04-20 | 2016-06-29 | 华为技术有限公司 | 一种信道状态信息反馈方法及装置 |
| CN110266432B (zh) * | 2012-05-11 | 2021-11-19 | 华为技术有限公司 | 触发信道状态信息非周期反馈的方法、ue、基站及系统 |
| JP6324954B2 (ja) * | 2012-06-18 | 2018-05-16 | サムスン エレクトロニクス カンパニー リミテッド | 協調マルチポイント送信のための非周期的及び周期的csiフィードバックモード |
| CN103516464B (zh) * | 2012-06-20 | 2018-04-10 | 中兴通讯股份有限公司 | 信道状态信息报告的反馈方法及装置 |
| US20130343300A1 (en) * | 2012-06-21 | 2013-12-26 | Lg Electronics Inc. | Method and apparatus for transmitting and receiving data |
| BR112015007031B1 (pt) * | 2012-09-28 | 2018-08-07 | Huawei Technologies Co., Ltd. | Método de processamento de processo de informação de estado de canal, dispositivo de rede e equipamento de usuário |
| CN103780358B (zh) * | 2012-10-24 | 2018-08-21 | 中兴通讯股份有限公司 | 一种确定信道状态信息的方法及终端 |
| CN103812617B (zh) * | 2012-11-13 | 2017-03-22 | 上海贝尔股份有限公司 | 用于改善用户设备初始接入时延的方法、装置及基站 |
| KR102117024B1 (ko) * | 2012-11-28 | 2020-06-01 | 삼성전자 주식회사 | 무선 통신 시스템의 통신 방법 및 장치 |
| EP2739107B1 (en) * | 2012-11-28 | 2019-01-02 | Samsung Electronics Co., Ltd | Method and apparatus for performing communication in a wireless communication system |
| CN103929225B (zh) * | 2013-01-11 | 2018-02-23 | 株式会社日立制作所 | 反馈控制装置、反馈装置及多用户mimo反馈方法 |
| US9825747B2 (en) * | 2013-01-23 | 2017-11-21 | Qualcomm Incorporated | Efficient uplink resource indication for CSI feedback |
| CN104125040A (zh) * | 2013-04-28 | 2014-10-29 | 华为技术有限公司 | 一种上行控制信息的传输方法及用户设备 |
| CN114257341B (zh) * | 2013-05-24 | 2023-08-29 | 中兴通讯股份有限公司 | 信道状态信息反馈方法和终端 |
| EP3005599B1 (en) | 2013-05-31 | 2020-04-29 | Qualcomm Incorporated | Linear precoding in full-dimensional mimo systems |
| PL3117545T3 (pl) | 2013-08-21 | 2020-07-27 | Telefonaktiebolaget Lm Ericsson (Publ) | Sposób i układ do konfigurowania pomiarów CSI |
| CN105099532B (zh) * | 2014-05-16 | 2018-12-11 | 普天信息技术有限公司 | 一种选择非周期信道状态信息上报模式的方法 |
| HUE049819T2 (hu) * | 2014-05-22 | 2020-10-28 | Qualcomm Inc | Periodikus és aperiodikus csatornaállapot információ (CSI) jelentés MIMO-hoz |
| US9331881B2 (en) * | 2014-09-03 | 2016-05-03 | Motorola Solutions, Inc. | Methods and systems for embedding supplementary data channel in OFDM-based communication systems |
| CN105610542A (zh) * | 2014-11-14 | 2016-05-25 | 北京三星通信技术研究有限公司 | 信道状态信息报告的方法及装置 |
| CN105790905A (zh) * | 2014-12-16 | 2016-07-20 | 北京信威通信技术股份有限公司 | 下行信道状态信息参考信号的发送方法、装置及系统 |
| US10659126B2 (en) * | 2015-03-13 | 2020-05-19 | Lg Electronics Inc. | Method for feeding back CSI information in wireless communication system and device therefor |
| US10084552B2 (en) * | 2015-05-11 | 2018-09-25 | Collision Communications, Inc. | Methods, systems, and computer program products for calibrating hardware-induced distortion in a communication system |
| KR102053135B1 (ko) | 2015-05-15 | 2020-01-08 | 후아웨이 테크놀러지 컴퍼니 리미티드 | 반송파 집성 능력 보고 및 반송파 측정 장치 및 방법 |
| CN106301509B (zh) * | 2015-05-21 | 2020-01-17 | 电信科学技术研究院 | 一种信道状态信息反馈方法和终端 |
| CN106301692B (zh) | 2015-05-21 | 2019-12-10 | 电信科学技术研究院 | 一种信道状态信息获取方法及装置 |
| US10104568B2 (en) * | 2015-06-30 | 2018-10-16 | Qualcomm Incorporated | Periodic channel state information reporting for enhanced carrier aggregation |
| CN106411377A (zh) * | 2015-07-31 | 2017-02-15 | 电信科学技术研究院 | 一种信息反馈方法、装置、终端及基站 |
| CN106487484B (zh) * | 2015-08-25 | 2021-02-12 | 中兴通讯股份有限公司 | 信息配置、信息反馈方法、基站及终端 |
| CN108141823A (zh) * | 2015-10-19 | 2018-06-08 | 华为技术有限公司 | 一种用户设备、网络节点、方法和计算机程序产品 |
| WO2017209417A1 (ko) * | 2016-06-03 | 2017-12-07 | 엘지전자 주식회사 | 무선 통신 시스템에서 상향링크 제어 정보 전송 방법 및 이를 위한 장치 |
| CN109479247B (zh) * | 2016-08-08 | 2021-07-16 | Lg 电子株式会社 | 用于报告功率余量的方法和设备 |
| JP6869351B2 (ja) * | 2017-01-09 | 2021-05-12 | テレフオンアクチーボラゲット エルエム エリクソン(パブル) | 半永続的csi−rsに対する信頼できる動的指示のためのシステムおよび方法 |
| US11218268B2 (en) * | 2017-03-23 | 2022-01-04 | Ntt Docomo, Inc. | User terminal and radio communication method |
| CN108631848A (zh) * | 2017-03-24 | 2018-10-09 | 夏普株式会社 | 信道状态信息反馈方法、用户设备和基站 |
| CA3072140A1 (en) | 2017-08-18 | 2019-02-21 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Channel state information reporting method and related equipment |
| WO2019136650A1 (zh) * | 2018-01-10 | 2019-07-18 | 富士通株式会社 | 触发状态配置方法以及装置、通信系统 |
| CN110149185B (zh) * | 2018-02-13 | 2021-01-08 | 维沃移动通信有限公司 | Csi资源类型的确定方法、终端和网络侧设备 |
| CN110971370B (zh) | 2018-09-28 | 2024-01-05 | 夏普株式会社 | 由用户设备执行的方法以及用户设备 |
| CN111278005B (zh) * | 2019-01-22 | 2021-09-24 | 维沃移动通信有限公司 | 能力信息上报方法、预编码矩阵指示反馈方法和相关设备 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635987A (zh) * | 2008-07-25 | 2010-01-27 | 中兴通讯股份有限公司 | 一种反馈下行接收状态的方法 |
| CN101640656A (zh) * | 2008-07-31 | 2010-02-03 | 中兴通讯股份有限公司 | 信道质量指数反馈方法、接收机和发射机 |
| CN101741506A (zh) * | 2008-11-14 | 2010-06-16 | 中兴通讯股份有限公司 | 基于多载波的信道质量指示反馈方法及装置 |
| CN101873647A (zh) * | 2009-04-22 | 2010-10-27 | 中兴通讯股份有限公司 | 一种非周期信道质量信息发送方法 |
| CN102082643A (zh) * | 2010-07-28 | 2011-06-01 | 大唐移动通信设备有限公司 | 一种发送反馈信息的方法、系统和设备 |
| CN102082636A (zh) * | 2010-08-16 | 2011-06-01 | 大唐移动通信设备有限公司 | 一种信道状态信息csi反馈指示方法和基站及系统 |
Family Cites Families (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100571806B1 (ko) * | 2003-02-11 | 2006-04-17 | 삼성전자주식회사 | 적응적 ofdma 시스템에서 궤환되는 채널 상태 정보를줄이기 위한 방법 및 이를 사용하는 적응적 ofdma시스템 |
| KR20050081528A (ko) * | 2004-02-14 | 2005-08-19 | 삼성전자주식회사 | 다중반송파 통신시스템을 위한 채널 상태정보 피드백 방법 |
| US7564814B2 (en) * | 2004-05-07 | 2009-07-21 | Qualcomm, Incorporated | Transmission mode and rate selection for a wireless communication system |
| KR20080041096A (ko) * | 2007-03-13 | 2008-05-09 | 엘지전자 주식회사 | 무선 통신 시스템에서 피드백 정보를 이용한 링크 적응방법 |
| CN101378277B (zh) * | 2007-08-29 | 2016-04-06 | 上海贝尔股份有限公司 | 多用户预编码及调度方法和实现该方法的基站 |
| KR100939353B1 (ko) * | 2007-12-11 | 2010-01-29 | 한국전자통신연구원 | 신호 수신 방법 및 신호 전송 방법 |
| KR101124907B1 (ko) * | 2008-01-02 | 2012-06-01 | 인터디지탈 패튼 홀딩스, 인크 | Lte에서 cqi 보고를 위한 구성 |
| KR101531914B1 (ko) * | 2008-01-28 | 2015-06-29 | 엘지전자 주식회사 | 단말 유발 채널상태정보 전송 방법 |
| WO2009147053A2 (en) * | 2008-06-04 | 2009-12-10 | Nokia Siemens Networks Oy | Channel quality signaling for persistent/semi-persistent radio resource allocations |
| KR101611290B1 (ko) * | 2008-12-29 | 2016-04-11 | 엘지전자 주식회사 | 복수의 전송 대역을 지원하는 무선 통신 시스템에 있어서, cqi를 요청하기 위한 제어정보를 전송하는 방법 |
| WO2010089408A1 (en) * | 2009-02-09 | 2010-08-12 | Nokia Siemens Networks Oy | Method and apparatus for providing channel state reporting |
| KR101590010B1 (ko) * | 2009-02-27 | 2016-01-29 | 엘지전자 주식회사 | 무선 통신 시스템에서 하향링크 멀티 캐리어에 대한 채널 품질 정보를 전송하는 방법 |
| US8797945B2 (en) * | 2009-05-01 | 2014-08-05 | Clearwire Ip Holdings Llc | System and method for hybrid schemes of MIMO mode decision |
| US8638684B2 (en) * | 2010-04-05 | 2014-01-28 | Qualcomm | Aperiodic channel state information request in wireless communication |
| WO2011129585A2 (ko) * | 2010-04-12 | 2011-10-20 | 엘지전자 주식회사 | 다중 안테나 지원 무선 통신 시스템에서 효율적인 피드백 방법 및 장치 |
| WO2011155777A2 (ko) * | 2010-06-09 | 2011-12-15 | 엘지전자 주식회사 | 다중 반송파 지원 무선 통신 시스템에서 채널상태정보 송수신 방법 및 장치 |
| WO2011162522A2 (ko) * | 2010-06-21 | 2011-12-29 | 엘지전자 주식회사 | 채널 상태 정보 전송 방법 및 장치 |
| WO2011162520A2 (ko) * | 2010-06-22 | 2011-12-29 | 엘지전자 주식회사 | 채널 상태 정보 전송 방법 및 장치 |
| CN103004116B (zh) * | 2010-07-16 | 2017-04-12 | Lg电子株式会社 | 发送控制信息的方法和设备 |
| KR101507865B1 (ko) * | 2010-07-21 | 2015-04-07 | 엘지전자 주식회사 | 채널 상태 정보 피드백을 송수신하는 방법 및 그 장치 |
| WO2012011775A2 (ko) * | 2010-07-22 | 2012-01-26 | 엘지전자 주식회사 | 다중 반송파 시스템에서 상향링크 제어 정보 전송 방법 및 장치 |
| WO2012150807A2 (ko) * | 2011-05-02 | 2012-11-08 | 엘지전자 주식회사 | 무선 접속 시스템에서 데이터 송수신 방법 및 이를 위한 기지국 |
| US9538509B2 (en) * | 2012-05-18 | 2017-01-03 | Alcatel Lucent | Method and apparatus for multi-mode control information on uplink channel |
| US9167585B2 (en) * | 2012-05-21 | 2015-10-20 | Samsung Electronics Co., Ltd. | Transmission mode and feedback designs to support MTC type devices in LTE |
-
2010
- 2010-08-16 CN CN2010102553294A patent/CN102082636B/zh active Active
-
2011
- 2011-08-16 EP EP15152522.7A patent/EP2897317B1/en active Active
- 2011-08-16 US US13/701,018 patent/US8750237B2/en active Active
- 2011-08-16 KR KR1020127031549A patent/KR101462415B1/ko active Active
- 2011-08-16 EP EP11817776.5A patent/EP2575278B1/en active Active
- 2011-08-16 WO PCT/CN2011/078447 patent/WO2012022249A1/zh not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101635987A (zh) * | 2008-07-25 | 2010-01-27 | 中兴通讯股份有限公司 | 一种反馈下行接收状态的方法 |
| CN101640656A (zh) * | 2008-07-31 | 2010-02-03 | 中兴通讯股份有限公司 | 信道质量指数反馈方法、接收机和发射机 |
| CN101741506A (zh) * | 2008-11-14 | 2010-06-16 | 中兴通讯股份有限公司 | 基于多载波的信道质量指示反馈方法及装置 |
| CN101873647A (zh) * | 2009-04-22 | 2010-10-27 | 中兴通讯股份有限公司 | 一种非周期信道质量信息发送方法 |
| CN102082643A (zh) * | 2010-07-28 | 2011-06-01 | 大唐移动通信设备有限公司 | 一种发送反馈信息的方法、系统和设备 |
| CN102082636A (zh) * | 2010-08-16 | 2011-06-01 | 大唐移动通信设备有限公司 | 一种信道状态信息csi反馈指示方法和基站及系统 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013148347A1 (en) * | 2012-03-29 | 2013-10-03 | Qualcomm Incorporated | Channel state information reference signal (csi-rs) configuration and csi reporting restrictions |
| US9155098B2 (en) | 2012-03-29 | 2015-10-06 | Qualcomm Incorporated | Channel state information reference signal (CSI-RS) configuration and CSI reporting restrictions |
| US20130343301A1 (en) * | 2012-06-22 | 2013-12-26 | Qualcomm Incorporated | TECHNIQUES FOR JOINT SUPPORT OF COORDINATED MULTIPOINT (CoMP) OPERATIONS AND CARRIER AGGREGATION (CA) |
| US9755706B2 (en) * | 2012-06-22 | 2017-09-05 | Qualcomm Incorporated | Techniques for joint support of coordinated multipoint (CoMP) operations and carrier aggregation (CA) |
Also Published As
| Publication number | Publication date |
|---|---|
| US8750237B2 (en) | 2014-06-10 |
| CN102082636A (zh) | 2011-06-01 |
| EP2575278A4 (en) | 2013-08-21 |
| KR20130028115A (ko) | 2013-03-18 |
| EP2897317A1 (en) | 2015-07-22 |
| KR101462415B1 (ko) | 2014-11-17 |
| EP2575278A1 (en) | 2013-04-03 |
| CN102082636B (zh) | 2013-05-08 |
| EP2897317B1 (en) | 2016-06-22 |
| US20130070720A1 (en) | 2013-03-21 |
| EP2575278B1 (en) | 2015-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2012022249A1 (zh) | 一种信道状态信息csi反馈指示方法和基站及系统 | |
| US11974288B2 (en) | Uplink control information transmission methods for carrier aggregation | |
| CN105049164B (zh) | 非周期性探测参考信号设定方法、基站和用户设备 | |
| CN107113045B (zh) | 在无线通信系统中报告信道状态的方法及其装置 | |
| KR101486387B1 (ko) | 무선 접속 시스템에서 채널상태정보 전송 방법 | |
| KR101456008B1 (ko) | 다중 반송파 정합을 지원하는 무선 접속 시스템에서 비주기적 채널상태정보 피드백 방법 | |
| CN103283276B (zh) | 无线基站装置、用户终端以及无线通信方法 | |
| EP2584825B1 (en) | Method and apparatus for transmitting channel state information | |
| CN104081827B (zh) | 用于非周期性的信道状态信息的多个过程的报告 | |
| CN103141146B (zh) | 移动通信系统、移动站装置、基站装置、通信方法及集成电路 | |
| KR102006194B1 (ko) | 하향 링크 코오디네이티드 멀티 포인트 시스템에서 채널 상태 정보 송수신 방법 및 장치 | |
| US20110235599A1 (en) | Method and system for uplink acknowledgement signaling in carrier-aggregated wireless communication systems | |
| CN110612765A (zh) | 在无线通信系统中发送上行链路信号的方法及其设备 | |
| JP2019528610A (ja) | 無線通信システムにおけるチャネル態報告のための方法及びその装置 | |
| CN108306665A (zh) | 一种用于在无线网络中配置传输模式的方法 | |
| KR20120068858A (ko) | 상향링크 제어 정보의 전송 방법 및 이를 위한 장치 | |
| EP2583518A1 (en) | Sounding mechanism under carrier aggregation | |
| CN102237986A (zh) | 复合及传输上链路控制信息的方法及其通讯装置 | |
| CN110622609B (zh) | 用于在无线通信系统中接收下行链路信号的方法和装置 | |
| WO2014180188A1 (zh) | 一种多子帧调度方法、基站、终端和系统 | |
| WO2014067137A1 (zh) | 确定控制信道资源的方法和用户设备 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11817776 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 13701018 Country of ref document: US |
|
| ENP | Entry into the national phase |
Ref document number: 20127031549 Country of ref document: KR Kind code of ref document: A |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2011817776 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |





