WO2012095015A1 - 一种确定信道质量指示信息的方法和装置 - Google Patents
一种确定信道质量指示信息的方法和装置 Download PDFInfo
- Publication number
- WO2012095015A1 WO2012095015A1 PCT/CN2012/070292 CN2012070292W WO2012095015A1 WO 2012095015 A1 WO2012095015 A1 WO 2012095015A1 CN 2012070292 W CN2012070292 W CN 2012070292W WO 2012095015 A1 WO2012095015 A1 WO 2012095015A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- csi
- cqi
- ports
- port
- reference resource
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
-
- 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
- H04B7/0413—MIMO systems
- H04B7/0417—Feedback systems
-
- 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
-
- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
-
- 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
- H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
- H04L1/206—Arrangements for detecting or preventing errors in the information received using signal quality detector for modulated signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
-
- 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
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
-
- 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 signaling, i.e. of overhead other than pilot signals
- H04L5/0057—Physical resource allocation for CQI
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
Definitions
- the present invention relates to the field of wireless communications, and in particular, to a method and apparatus for determining channel quality indication (CQI, Channels quality indication) information.
- CQI Channel quality indication
- a base station such as an evolved Node B (eNodeB, eNB) transmits data using multiple antennas
- spatial multiplexing may be adopted to increase the data transmission rate, that is, the same time-frequency resource is used at the transmitting end.
- the antenna position transmits different data
- the receiving end such as the user equipment (UE, User Equipment) also uses multiple antennas to receive data.
- the resources of all the antennas are allocated to the same user.
- the user owns the physical resources allocated to the base station side in the transmission interval.
- This transmission mode is called single user multiple input multiple output (Single User Multiple- Input Multiple-Out-put, SU-MIMO); allocates spatial resources of different antennas to different users in the case of multiple users, and one user and at least one other user share physical resources allocated by the base station side in the transmission interval, sharing mode It can be a space division multiple access method or a space division multiplexing mode.
- This type of transmission is called Multiple User Multiple-Input Multiple-Out-put (MU-MIMO), and the physical resources allocated by the base station side. Refers to time-frequency resources. If the transmission system is to support both SU-MIMO and MU-MIMO, the eNB needs to provide the UE with data in these two modes.
- the UE When the UE is in the SU-MIMO mode or the MU-MIMO mode, it is necessary to know the rank ( Rank) used by the eNB to transmit MIMO data to the UE.
- Rank the rank used by the eNB to transmit MIMO data.
- SU-MIMO mode all antenna resources are allocated to the same user, and the number of layers used to transmit MIMO data is equal to the rank used by the eNB to transmit MIMO data.
- MU-MIMO mode the number of layers used for one user transmission Less than the total number of layers of MIMO data transmitted by the eNB. If SU-MIMO mode and MU-MIMO handover are to be performed, the eNB needs to notify the UE in different transmission modes. Different control data.
- the control signaling that needs to be transmitted on the uplink has an ACK/NACK, Acknowledgement/Negative Acknowledgement, and information reflecting the state of the downlink physical channel (CSI, Channel State).
- CSI Downlink Physical channel
- CQI is an indicator used to measure the quality of downlink channels.
- CQI is represented by integer values from 0 to 15, which represent different CQI levels.
- Different CQIs correspond to their respective code modulation schemes (MCS, Modulation and Coding Scheme), as shown in Table 1.
- MCS code modulation schemes
- Table 1 The selection of CQI levels should follow the following guidelines:
- the selected CQI level should be such that the PDSCH (Physical Downlink Shared Channel) transport block corresponding to the CQI has a block error rate of less than 0.1 under the corresponding MCS.
- PDSCH Physical Downlink Shared Channel
- the UE Based on the unrestricted detection interval in the frequency domain and the time domain, the UE will obtain the highest CQI value corresponding to each of the maximum CQI values reported in the uplink subframe n, and the CQI index range is 1-15, and satisfies the following Condition, if the CQI index 1 does not satisfy the condition, the CQI index is 0: the error rate of the single PDSCH transport block when received is not more than 0.1, and the PDSCH transport block contains joint information: modulation mode and transport block size, corresponding to one CQI index And a group of downlink physical resource blocks occupied, that is, CQI reference resources.
- the highest CQI value refers to the maximum CQI value when the block error rate (BLER) is not greater than 0.1, which is beneficial to control resource allocation.
- BLER block error rate
- the combination of the transport block size and the modulation mode corresponds to a CQI index, which specifically includes the following conditions:
- the combined information for PDSCH transmission on the CQI reference resource may be signaled.
- the CQI index can indicate the modulation mode.
- the effective channel coding rate is the most likely effective channel coding rate that can be characterized by the CQI index.
- the combined information with the smallest transport block size is used.
- Each CQI index corresponds to a modulation mode and a transport block size
- the transport block size and the number of physical resource blocks (NPRBs) have a certain correspondence relationship
- the coding can be calculated according to the transport block size and the size of the NPRB. rate.
- CQI There are many definitions of CQI appearing in LTE. According to different principles, CQI can be divided:
- wideband CQI refers to the channel state indication of all subbands, and the CQI information of the subband set S is obtained;
- the subband CQI pointer is the CQI information for each subband.
- LTE divides the resource block (RB: Resource Block) corresponding to the effective bandwidth into several RB groups according to different system bandwidths, and each RB group is called a subband.
- RB Resource Block
- Subband CQI can be further divided into full subband CQI and select M best subbands (Best M) CQI: full subband CQI reports CQI information of all subbands; selects M subbands from subband set S, and reports these M subbands The CQI information, and simultaneously report the location information of the M subbands.
- Best M M best subbands
- the UE reports CQI information of a single code stream;
- dual-stream CQI applies Closed loop spatial multiplexing mode.
- the open-loop spatial multiplexing mode since the channel state information is unknown and the dual-stream characteristics are equalized in the precoding, the CQIs of the two code streams are equal under the open-loop spatial multiplexing. 3.
- the CQI representation method it is divided into absolute value CQI and differential (Differential) CQI: absolute value CQI is the CQI index represented by 4 bits in Table 1;
- the differential CQI is a CQI index expressed by 2 bits or 3 bits; the differential CQI is further divided into a differential CQI of the second code stream with respect to the first code stream, and a differential CQI of the subband CQI with respect to the subband CQI.
- the CQI method it is divided into wideband CQL UE selected (selected X subband CQI) and high layer configured (subband CQI).
- Wideband CQI refers to the CQI information of the subband set S
- the UE selected is the Best M CQI, and feeds back the CQI information of the selected M subbands, and reports the positions of the M subbands at the same time;
- High layer configured is a full subband CQI that feeds back one CQI information for each subband.
- Both the high layer configured and the UE selected are sub-band CQI feedback modes.
- the subband sizes defined by the two feedback modes are inconsistent; in the UE selected mode, the size of the M is also defined.
- the ACK/NACK is transmitted on the physical uplink control channel (PUCCH, Physical Uplink Control) in the format 1/la/lb (PUCCH formatl/la/lb). If the UE needs to send uplink data, it is in the physical uplink shared channel. (PUSCH, Physical Uplink Shared Channel) transmission, CQI/PMI and RI feedback can be periodic feedback or non-periodic feedback. The specific feedback is shown in Table 2:
- the CQI/PMI and RI if the UE does not need to send For the line data, the CQI/PMI and RI of the periodic feedback are transmitted on the PUCCH in the format 2/2a/2b (PUCCH format 2/2a/2b); if the UE needs to transmit the uplink data, the CQI/PMI and the RI are transmitted on the PUSCH; For CQI/PMI and RI of aperiodic feedback, it is transmitted only on the PUSCH.
- the following three types of downlink physical control channels are defined in the Release 8 (LTE) standard: Physical Control Format Indicator Channel (PCFICH) and Physical Hybrid Automatic Retransmission Request (Physical Hybrid Automatic Retransmission Request) Indicator Channel, PHICH) and Physical Downlink Control Channel (PDCCH).
- PCFICH Physical Control Format Indicator Channel
- PHICH Physical Hybrid Automatic Retransmission Request
- PDCCH Physical Downlink Control Channel
- DCI Downlink Control Information
- the DCI format (DCI format) is divided into the following types: 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 3 A, etc.; the transmission mode 5 supporting MU-MIMO utilizes the downlink control information of the DCI format ID, and the downlink power domain (Downlink power offset field) in the DCI format ID is used to indicate the user in the MU-MIMO mode.
- the power is halved (ie, -lOloglO U )), because MU-MIMO transmission mode 5 only supports MU-MIMO transmission for two users.
- MU-MIMO transmission mode 5 can support SU-MIMO mode. Dynamic switching with MU-MIMO mode, but this DCI format supports only one stream transmission for one UE in either SU-MIMO mode or MU-MIMO mode, although LTE Release 8 supports up to two streams in transmission mode 4. User transmission, but because the switching between transmission modes can only be semi-statically, single-user multi-stream transmission and multi-purpose cannot be implemented in LTE Release 8. Dynamic transmission switching.
- a dual-flow beamforming transmission mode is introduced, defined as transmission mode 9, and downlink control information is added to DCI format 2B to support such transmission.
- Mode there is one in DCI format 2B
- the identification bits of the scrambling identity (SCID) support two different scrambling code sequences, and the eNB can allocate the two scrambling code sequences to different users and multiplex multiple users in the same resource.
- the new data indication (NDI) bit corresponding to the non-enabled (Transmitted) transport block is also used to indicate the antenna port at the time of single layer transmission.
- a new closed-loop spatial multiplexing transmission mode is added, which is defined as a transmission mode 10, which can support both single-user MIMO and support.
- Multi-user MU-MIMO and can support dynamic switching between the two, and this transmission mode also supports 8-antenna transmission.
- This new transmission mode has determined the Demodulation Reference Signal (DMRS) for demodulation pilots. The UE needs to obtain the pilot position before it can make channel and interference estimates on the pilot. .
- DMRS Demodulation Reference Signal
- the UE is semi-statically set by higher layer signaling to receive PDSCH data transmission according to a PDCCH indication of a user equipment-specific (UE-Specific) search space based on one of the following transmission modes. :
- Mode 1 Single antenna port; Port 0 ( Single-antenna port; port 0 );
- Mode 2 Transmit diversity (Transmit diversity);
- Mode 3 Open-loop spatial multiplexing
- Mode 5 Multi-user Multiple Input Multiple Output (Multi-user MIMO);
- Mode 7 Single antenna port; Port 5 (Single-antenna port; port 5);
- Mode 8 dual stream transmission, ie dual stream beamforming
- Mode 9 Up to 8 layers of closed loop spatial multiplexing.
- the transmission mode 9 and the channel state information-reference symbol are newly added, and the transmission mode 9 is based on the CSI-RS for channel measurement, thereby calculating the CQI.
- Other transmission modes are based on cell-specific A channel measurement is performed by a reference signal (CRS, cell-specific reference signal) to calculate a CQI.
- some CSI-RS parameters have also been added to characterize attributes. Compared to the CRS in R8, some parameters are similar, and some parameters are new. For example, the number of CSI-RS ports also has a similar number of CRS ports in R8, and the CSI-RS subframe configuration period parameters are new.
- the following parameters are cell-specific and configured by higher layer signaling for CSI-RS definition, including: CSI-RS port number, CSI-RS configuration, CSI-RS subframe configuration parameter (ICSI-RS), subframe The configuration period (TCSI-RS), the subframe offset, and the Pc of the UE of the reference PDSCH transmit power applied to the CSI feedback.
- the first PMI indicates broadband channel state information
- the second PMI indication The channel state information of the subband, only the two PMIs can obtain the complete precoding matrix information, wherein the subband includes the broadband case, that is, the broadband is a special case of the subband, for example, the second PMI can also be broadband; Antenna and 4 antennas, the first PMI indicates the unit matrix, and the second PMI is equivalent to the PMI of the original R8 protocol.
- the technical problem to be solved by the present invention is to provide a method and apparatus for determining channel quality indication information, which solves the problem that an existing system cannot obtain accurate channel quality indication information when using transmission mode 9, and improves system flexibility and performance. .
- a method for determining CQI information including:
- the eNodeB sends the CSI-RS and the CRS to the UE;
- the UE performs channel measurement according to CSI-RS or CRS;
- the UE determines a CQI reference resource, and determines a CQI value on the CQI reference resource according to the channel measurement result;
- the UE calculates the CQI based on the CRS; if the eNodeB is configured with the configured PMI/RI, the UE calculates the CQI based on the CSI-RS;
- the CQI reference resource is defined by the downlink physical resource block, where the downlink physical resource block corresponds to the frequency band related to the CQI value; in the time domain, the CQI reference resource is defined by the downlink subframe; in the transport layer domain, Any RI and PMI to define a CQI reference resource, and the CQI is conditional on the RI and PMI;
- the PRS does not use the resource element of the CQI reference resource.
- the CQI reference resource if there is a measurable subset of the CSI measurement configured by the channel quality information measurement subframe, the channel measurement or interference measurement is limited to the subframe defined by the measurement subset.
- the base station configures the measurement subset by signaling, or configures the measurement subset by aperiodic triggering; in the time domain, the downlink subframe of the CQI reference resource needs to be defined in the measurement sub concentrated.
- the UE sets N virtual CSI-RS ports, and it is assumed that the transmission strategy of the downlink data sharing channel for the CQI reference resource is the ⁇ antenna transmission diversity, where ⁇ is a natural number, and ⁇ is determined by the number of ports of the CRS or the number of CSI-RS ports.
- the UE For the transmission mode 9, if the eNodeB configuration has no PMI/RI and the number of CSI-RS ports of the eNodeB is equal to 8, the UE sets 2 virtual CSI-RS ports, and then assumes transmission of the downlink data sharing channel for the CQI reference resource.
- the strategy is 2 antenna transmit diversity.
- the UE For the transmission mode 9, if the eNodeB configuration has no PMI/RI and the number of CSI-RS ports of the eNodeB is equal to 8, the UE sets 4 virtual CSI-RS ports, and then assumes transmission of the downlink data sharing channel for the CQI reference resource.
- the strategy is 4 antenna transmit diversity.
- the UE sets one virtual CSI-RS port, and assumes the transmission of the downlink data sharing channel for the CQI reference resource.
- the strategy is a single layer transmission.
- the CSI-RS port is mapped from 15 to 18 to the first virtual CSI-RS port, and the CSI-RS port is mapped from 19 to 22 to the second virtual CSI-RS port.
- the CSI-RS ports 15, 17, 19, and 21 are mapped to the first virtual CSI-RS port, and the CSI-RS ports 16, 18, 20, and 22 are mapped to the second virtual CSI-RS port.
- the CSI-RS ports 15 and 16 are mapped to the first virtual CSI-RS port, the CSI-RS ports 17 and 18 are mapped to the second virtual CSI-RS port, and the CSI-RS ports 19 and 20 are mapped to the third.
- the virtual CSI-RS port, CSI-RS ports 21 and 22 are mapped to the fourth virtual CSI-RS port.
- the CSI-RS ports 15 and 19 are mapped to the first virtual CSI-RS port, the CSI-RS ports 16 and 20 are mapped to the second virtual CSI-RS port, and the CSI-RS ports 17 and 21 are mapped to the third.
- the virtual CSI-RS port, CSI-RS ports 18 and 22 are mapped to the fourth virtual CSI-RS port.
- the UE calculates the CQI based on the CRS; if the number of CSI-RS ports configured by the eNodeB is greater than 1, the UE calculates the CQI based on the CSI-RS.
- An apparatus for determining channel quality indication information includes:
- a receiving module configured to receive a CSI-RS and/or a CRS sent by the base station
- a measurement module configured to perform channel measurement according to CSI-RS and/or CRS received by the receiving module; wherein, if the eNodeB configuration does not have PMI/RI, perform channel measurement based on the CRS;
- the eNodeB is configured with PMI/RI, and performs channel measurement based on the CSI-RS;
- a determining module configured to determine a CSI reference resource and a condition for calculating a CQI
- a calculation module configured to calculate a CQI value of the corresponding CSI reference resource according to the condition determined by the determining module and the measurement result of the measurement module;
- the CQI reference resource is defined by the downlink physical resource block, where the downlink physical resource block corresponds to the frequency band corresponding to the source CQI value; in the time domain, the CQI reference resource is defined by the downlink subframe;
- the CQI reference resource is defined by any RI and PMI, and the CQI is conditional on the RI and PMI.
- the determining module when calculating the condition of the CQI, is used to assume that the CSI-RS does not use the resource element of the CQI reference resource.
- the determining module when calculating the condition of the CQI, is used to assume that the PRS does not use the resource element of the CQI reference resource.
- the device is disposed in the UE.
- the present invention does not add any system complexity and signaling overhead.
- the number of high-level signaling CSI-RS ports configured determines whether the current feedback mode has PMI/RI feedback, and supports PMI/RI feedback and no PMI/RI feedback.
- the type of the measurement reference signal is selected by the existing PMI-RI high-level configuration signaling or the number of CSI-RS ports, so that one transmission mode can support channel measurement of two reference signals, and a unified PDSCH transmission mode is defined.
- the assumption solves the problem that the UE cannot obtain accurate channel quality information in the prior art.
- due to the effective use of the CSI-RS parameters in R10 and the PMI-RI high-level parameters in R9 good compatibility and low overhead are maintained.
- FIG. 1 is a flowchart of determining channel quality indication information in an embodiment of the present invention
- FIG. 2 is a schematic diagram of a system according to an embodiment of the present invention. detailed description
- the CQI reference resources are described from three aspects: time domain, frequency domain and transmission domain.
- the CQI reference resource indicates that the CQI is measured over a certain bandwidth; in the time domain, the CQI reference resource indicates that the CQI is measured on a certain downlink subframe, where the downlink subframe is In some cases it is invalid.
- the CQI is not reported in the uplink subframe on the subframe n.
- the number of downlink subframes nCQI_ref is at least 4. That is,
- CQI is measured before at least 4 downlink subframes
- the CQI is measured in the downlink subframe triggered by DCI format 0; in the case of aperiodic feedback, the CQI is measured in the subframe after the subframe triggered by the Random Access Response Grant;
- CQI is calculated from PMI and RI.
- the control signal occupies the first 3 OFDM (Orthogonal Frequency Division Multiple Access) symbols;
- the primary/secondary synchronization signal or physical broadcast channel does not use resource elements;
- CP length uses non-multicast broadcast single frequency network (MBSFN, Multicast/Broadcast Single
- the redundancy version uses redundancy version 0 (RV0);
- channel measurement is performed according to CSI-RS, it is necessary to specify between PDSCH and CSI-RS.
- the ratio of the energy of each resource element (EPRE, Energy Per Resource Element); if the channel measurement is performed according to the CRS, the ratio of the EPRE between the PDSCH and the CRS needs to be given;
- the eNodeB sends the CSI-RS and the CRS to the UE;
- the UE performs channel measurement according to CSI-RS or CRS;
- the UE determines the CQI reference resource and determines the CQI value on the CQI reference resource based on the channel measurement result.
- the CQI reference resource is defined by a group of downlink physical resource blocks, where the downlink physical resource block corresponds to a frequency band corresponding to the source CQI value; in the time domain, the CQI reference resource is defined by using a downlink subframe; On the transport layer domain, the CQI reference resources are defined by any RI and PMI, and the CQI is conditioned on the RI and PMI.
- the channel measurement or interference measurement is limited to the subframe defined by the measurement subset.
- the base station may configure the subset of measurements by higher layer signaling, or may configure the subset of measurements by aperiodic triggering. In the time domain, the downlink subframe of the CQI reference resource needs to be defined in the measurement subset.
- the eNodeB is configured with the PMI/RI report, otherwise the eNodeB configuration does not (configure) the PM surface report.
- the eNodeB For transmission mode 9, if the eNodeB is configured without PMI/RI and the CSI-RS of the eNodeB The number of ports is equal to 8, and the eNodeB can set two virtual CSI-RS ports. At this time, it is assumed that the transmission strategy of the downlink data sharing channel used for the CQI reference resource is 2 antenna transmission diversity;
- the two virtual CSI-RS ports include: a CSI-RS port is mapped from 1 to 4 to a first virtual CSI-RS port, and a CSI-RS port is mapped from 5 to 8 to a second virtual CSI-RS port.
- the two virtual CSI-RS ports include: CSI-RS ports 15, 17, 19, and 21 are mapped to the first virtual CSI-RS port, and CSI-RS ports 16, 18, 20, and 22 are mapped to the second. Virtual CSI-RS port.
- the eNodeB can set 4 virtual CSI-RS ports, and assume the transmission strategy of the downlink data sharing channel for the CQI reference resource. Is 4 antenna transmit diversity.
- CSI-RS ports 15 and 16 are mapped to the first virtual CSI-RS port, and CSI-RS ports 17 and 18 are mapped to the second virtual CSI-RS port, CSI- RS ports 19 and 20 are mapped to a third virtual CSI-RS port, and CSI-RS ports 21 and 22 are mapped to a fourth virtual CSI-RS port.
- CSI-RS ports 15 and 19 are mapped to the first virtual CSI-RS port
- CSI-RS ports 16 and 20 are mapped to the second virtual CSI-RS port
- CSI- RS ports 17 and 21 are mapped to a third virtual CSI-RS port
- CSI-RS ports 18 and 22 are mapped to a fourth virtual CSI-RS port.
- the eNodeB can set one virtual CSI-RS port, and assume the transmission strategy of the downlink data sharing channel for the CQI reference resource. It is a single layer transmission.
- the one virtual CSI-RS port is such that CSI-RS ports 15 and 22 are mapped to one virtual CSI-RS port.
- the UE For transmission mode 9, if the eNodeB configuration does not have PMI/RI, the UE calculates CQI based on CRS; if the eNodeB is configured with PMI/RI, the UE calculates CQI based on CSI-RS. For transmission mode 9, if the number of CSI-RS ports configured by the eNodeB is equal to 1, the UE calculates the CQI based on the CRS; if the number of CSI-RS ports configured by the eNodeB is greater than 1, the UE calculates the CQI based on the CSI-RS.
- the base station configures a UE with a transmission mode of 9
- the base station configures the UE with eight CSI-RS ports, and the CSI-RS port number ranges from 15 to 22.
- the eNodeB sends a CSI-RS and a CRS to the UE.
- the UE performs channel measurement according to the CSI-RS or the CRS.
- the UE determines a CQI reference resource, and determines a CQI value on the CQI reference resource according to the channel measurement result.
- the UE reports the CQI value to the eNB.
- the first possibility is that the CQI reference resource has resource elements used by the CSI-RS.
- the CQI reference resource has resource elements used by the CSI-RS.
- the second possibility is that there is no CSI-RS resource element in the CQI reference resource, and naturally there is no such hypothesis.
- the first possibility is that the CQI reference resource has resource elements used by the PRS.
- the CQI reference resource has resource elements used by the PRS.
- the second possibility is that there is no PRS resource element in the CQI reference resource, and naturally there is no such hypothesis.
- the above CQI calculation method fully considers the influence of CSI-RS and PRS on CQI, and ensures the accuracy of CQI of demodulated data.
- the CQI calculation is based on the simplest scenario, that is, the influence of the CSI-RS and the PRS on the reported CQI is excluded as much as possible, and the base station can perform the MCS of the data according to whether the current subframe includes the CSI-RS and the PRS during scheduling. Appropriate adjustments ensure the performance and effectiveness of system link adaptation.
- the base station configures a transmission mode for a certain UE.
- the base station configures eight CSI-RS ports for the UE, and the CSI-RS port numbers are 15 to 22.
- the eNodeB sends the CSI-RS and the CRS to the UE;
- the UE performs channel measurement according to CSI-RS or CRS;
- the UE determines the CQI reference resource, and determines the CQI value on the CQI reference resource according to the channel measurement result.
- the eNodeB can set 2 virtual CSI-RS ports, and assume the transmission strategy of the downlink data sharing channel for the CQI reference resource. It is 2 antenna transmit diversity.
- the two virtual CSI-RS ports include: a CSI-RS port is mapped from 15 to 18 to a first virtual CSI-RS port, and a CSI-RS port is mapped from 19 to 22 to a second virtual CSI-RS port.
- the CSI-RS side transmits the same signal from 15 to 18, and the CSI-RS port transmits the same signal from 19 to 22.
- the two virtual CSI-RS ports include: CSI-RS ports 15, 17, 19 and 21 are mapped to the first virtual CSI-RS port, CSI-RS ports 16, 18, 20 and 22 is mapped to the second virtual CSI-RS port.
- CSI-RS ports 15, 17, 19, and 21 transmit the same signal
- CSI-RS port 16, 18, 20 and 22 send the same signal.
- the base station configures a transmission mode for a certain UE.
- the base station configures eight CSI-RS ports for the UE, and the CSI-RS port numbers are 15 to 22.
- the eNodeB sends the CSI-RS and the CRS to the UE;
- the UE performs channel measurement according to CSI-RS or CRS;
- the UE determines the CQI reference resource, and determines the CQI value on the CQI reference resource according to the channel measurement result.
- the UE For transmission mode 9, if the eNodeB configuration has no PMI/RI and the number of CSI-RS ports of the eNodeB is equal to 8, the UE sets 4 virtual CSI-RS ports, and assumes a transmission strategy of the downlink data sharing channel for the CQI reference resource. Is 4 antenna transmit diversity.
- CSI-RS ports 15 and 16 are mapped to the first virtual CSI-RS port, and CSI-RS ports 17 and 18 are mapped to the second virtual CSI-RS port, CSI- RS ports 19 and 20 are mapped to a third virtual CSI-RS port, and CSI-RS ports 21 and 22 are mapped to a fourth virtual CSI-RS port.
- CSI-RS ports 15 and 16 transmit the same signal
- CSI-RS ports 17 and 18 transmit the same signal
- CSI-RS ports 19 and 20 transmit the same signal
- CSI-RS ports 21 and 22 transmit the same signal.
- the CSI-RS ports 15 and 19 are mapped to the first virtual CSI-RS port, and the CSI-RS ports 16 and 20 are mapped to the second virtual CSI-RS port.
- CSI-RS ports 17 and 21 are mapped to a third virtual CSI-RS port, and CSI-RS ports 18 and 22 are mapped to a fourth virtual CSI-RS port.
- CSI-RS ports 15 and 19 transmit the same signal
- CSI-RS ports 16 and 20 transmit the same signal
- CSI-RS ports 17 and 21 transmit the same signal
- CSI-RS port 18 and 22 sends the same signal.
- the base station configures a transmission mode for a certain UE.
- the base station configures eight CSI-RS ports for the UE, and the CSI-RS port numbers are 15 to 22.
- the eNodeB sends the CSI-RS and the CRS to the UE;
- the UE performs channel measurement according to CSI-RS or CRS;
- the UE determines the CQI reference resource, and determines the CQI value on the CQI reference resource according to the channel measurement result.
- the eNodeB can set one virtual CSI-RS port, and assume the transmission strategy of the downlink data sharing channel for the CQI reference resource. It is a single layer transmission.
- the CSI-RS ports 15 and 22 are mapped to one virtual CSI-RS port.
- the eNodeB sends the CSI-RS and the CRS to the UE;
- the UE performs channel measurement according to CSI-RS or CRS;
- the UE determines the CQI reference resource, and determines the CQI value on the CQI reference resource according to the channel measurement result.
- the UE For transmission mode 9, if the eNodeB configuration does not have PMI/RI, the UE sets N virtual ports, and it is assumed that the transmission strategy of the downlink data sharing channel for the CQI reference resource is N antenna transmission diversity, where N is a natural number, N is Determined by the number of CRS ports or the number of CSI-RS ports, N can be 1, 2, 4.
- Example 6 When determining the channel quality indication information, you can perform the following steps:
- the eNodeB sends the CSI-RS and the CRS to the UE;
- the UE performs channel measurement according to CSI-RS or CRS;
- the UE determines the CQI reference resource, and determines the CQI value on the CQI reference resource according to the channel measurement result.
- the CQI reference resource is defined by a group of downlink physical resource blocks, where the downlink physical resource block corresponds to a frequency band corresponding to the source CQI value; in the time domain, the CQI reference resource is defined by using a downlink subframe; On the transport layer domain, the CQI reference resources are defined by any RI and PMI, and the CQI is conditioned on the RI and PMI.
- the channel measurement or interference measurement is limited to the subframe defined by the measurement subset.
- the base station may configure the subset of measurements by higher layer signaling, or may configure the subset of measurements by aperiodic triggering. In the time domain, the downlink subframe of the CQI reference resource needs to be defined in the measurement subset.
- the embodiment provides a device for determining channel quality indication information, which can be set in the UE, and the system including the UE and the eNodeB is as shown in FIG. 2 . among them,
- the eNodeB includes a sending module and a receiving module, where:
- a sending module configured to send a CSI-RS and/or a CRS to the terminal
- a receiving module configured to receive a CQI sent by the terminal
- the UE includes a receiving module, a measuring module, a determining module, a calculating module, and a sending module, and a receiving module, configured to receive a CSI-RS and/or a CRS sent by the base station;
- a measurement module configured to perform channel measurement according to CSI-RS and/or CRS received by the receiving module; wherein, if the eNodeB configuration does not have PMI/RI, perform channel measurement based on CRS; if the eNodeB is configured with PMI/RI, it is based on CSI - RS performs channel measurement.
- a determining module configured to determine a CSI reference resource and a condition for calculating a CQI; and a calculating module, configured to calculate a CQI value of the corresponding CSI reference resource according to the condition determined by the determining module and the measurement result of the measurement module.
- the module determines that the CQI condition is calculated, it can be assumed that the CSI-RS does not use the resource element of the CQI reference resource.
- the module When the module is determined to calculate the CQI condition, it can also be assumed that the PRS does not use the resource element of the CQI reference resource.
- the UE can perform channel measurement according to CSI-RS or CRS; and the UE can determine the CQI reference resource, and determine the CQI value on the CQI reference resource according to the channel measurement result.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013548731A JP5649744B2 (ja) | 2011-01-12 | 2012-01-12 | チャネル品質指示情報を確定する方法及び装置 |
ES12734059T ES2730979T4 (es) | 2011-01-12 | 2012-01-12 | Procedimiento y dispositivo de determinación de informaciones indicativas de la calidad de un canal |
EP12734059.4A EP2654356B1 (en) | 2011-01-12 | 2012-01-12 | Method and device for determining channel quality indication information |
KR20137019545A KR101504446B1 (ko) | 2011-01-12 | 2012-01-12 | 채널 품질 지시 정보를 확정하는 방법 및 장치 |
US13/979,381 US9107087B2 (en) | 2011-01-12 | 2012-01-12 | Method and device for determining channel quality indication information |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201110023494.1A CN102595469B (zh) | 2011-01-12 | 2011-01-12 | 一种信道质量指示信息的确定方法 |
CN201110023494.1 | 2011-01-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012095015A1 true WO2012095015A1 (zh) | 2012-07-19 |
Family
ID=46483571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2012/070292 WO2012095015A1 (zh) | 2011-01-12 | 2012-01-12 | 一种确定信道质量指示信息的方法和装置 |
Country Status (7)
Country | Link |
---|---|
US (1) | US9107087B2 (zh) |
EP (1) | EP2654356B1 (zh) |
JP (1) | JP5649744B2 (zh) |
KR (1) | KR101504446B1 (zh) |
CN (1) | CN102595469B (zh) |
ES (1) | ES2730979T4 (zh) |
WO (1) | WO2012095015A1 (zh) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014135064A1 (zh) * | 2013-03-05 | 2014-09-12 | 电信科学技术研究院 | 一种通信处理方法及设备 |
JP2015531211A (ja) * | 2012-08-21 | 2015-10-29 | エルジー エレクトロニクス インコーポレイティド | 無線通信システムにおいてチャネル状態情報(csi)送信方法及び装置 |
JP2016509773A (ja) * | 2013-01-03 | 2016-03-31 | インテル コーポレイション | 改良されたチャネル品質情報フィードバック方式 |
JP2016510519A (ja) * | 2012-12-27 | 2016-04-07 | ゼットティーイー (ユーエスエー) インコーポレイテッド | Mimootaをサポートするueの測定のための方法およびシステム |
WO2016119652A1 (zh) * | 2015-01-30 | 2016-08-04 | 中兴通讯股份有限公司 | Ue上报csi及触发ue上报csi的方法和装置 |
CN111107633A (zh) * | 2018-10-26 | 2020-05-05 | 维沃移动通信有限公司 | Csi上报方法、获取方法和设备 |
Families Citing this family (46)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113364556A (zh) * | 2012-03-02 | 2021-09-07 | 华为技术有限公司 | 信息传输方法和设备 |
CN103582043A (zh) * | 2012-08-09 | 2014-02-12 | 华为技术有限公司 | 小区选择方法及终端 |
KR101972945B1 (ko) * | 2012-09-18 | 2019-04-29 | 삼성전자 주식회사 | 무선 통신 시스템에서 채널 상태 정보 송수신 방법 및 장치 |
JP2015534396A (ja) * | 2012-09-27 | 2015-11-26 | 華為技術有限公司Huawei Technologies Co.,Ltd. | 通信システムにおいてチャネル状態情報を構成するシステム及び方法 |
CN103716078B (zh) * | 2012-09-29 | 2019-03-12 | 中兴通讯股份有限公司 | 一种信道状态信息的处理方法及装置 |
WO2014054903A1 (ko) * | 2012-10-04 | 2014-04-10 | 엘지전자 주식회사 | 무선 통신 시스템에서 안테나 포트 관계를 고려한 하향링크 신호 송수신 방법 및 장치 |
US9178583B2 (en) * | 2013-01-08 | 2015-11-03 | Samsung Electronics Co., Ltd. | Channel state information feedback design in advanced wireless communication systems |
WO2014110745A1 (en) * | 2013-01-16 | 2014-07-24 | Broadcom Corporation | Apparatuses, methods and computer program products for evaluating channel quality |
CN104115520B (zh) * | 2013-01-18 | 2018-10-30 | 华为技术有限公司 | 测量方法、小区测量方法、装置及通信节点 |
KR102285852B1 (ko) * | 2013-12-17 | 2021-08-05 | 삼성전자 주식회사 | 전차원 다중입력 다중출력 이동통신 시스템에서 통신방법 및 장치 |
CN110545133B (zh) * | 2013-12-20 | 2022-12-06 | 北京三星通信技术研究有限公司 | 信道状态信息汇报的方法及装置 |
EP3087689B1 (en) * | 2013-12-27 | 2019-09-18 | LG Electronics Inc. | Method and apparatus for reporting channel state information |
US20150195819A1 (en) | 2014-01-06 | 2015-07-09 | Intel IP Corporation | Systems and methods for modulation and coding scheme selection and configuration |
CN103825663B (zh) * | 2014-02-21 | 2016-04-20 | 电信科学技术研究院 | 信道状态信息测量方法以及装置 |
CN105024779A (zh) * | 2014-04-18 | 2015-11-04 | 深圳市中兴微电子技术有限公司 | 一种自适应信道质量指示选择的方法及装置 |
CN105024781B (zh) * | 2014-04-30 | 2019-06-21 | 中兴通讯股份有限公司 | 一种反馈信息的处理方法、装置及系统 |
WO2016074119A1 (en) * | 2014-11-10 | 2016-05-19 | Qualcomm Incorporated | Elevation pmi reporting on pucch |
PL3024165T3 (pl) | 2014-11-20 | 2017-11-30 | Panasonic Intellectual Property Corporation Of America | Ulepszone raportowanie o stanie kanału dla nośnych koncesjonowanych i niekoncesjonowanych |
CN107466452B (zh) * | 2015-04-08 | 2020-07-03 | Lg 电子株式会社 | 报告信道状态的方法及其装置 |
US9775141B2 (en) * | 2015-07-14 | 2017-09-26 | Motorola Mobility Llc | Method and apparatus for reducing latency of LTE uplink transmissions |
US10098030B2 (en) * | 2015-08-20 | 2018-10-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for measurement and report |
US10075218B2 (en) * | 2015-11-05 | 2018-09-11 | Samsung Electronics Co., Ltd. | Method and apparatus for FD-MIMO based multicasting in vehicular communication systems |
CN106888062B (zh) * | 2015-12-10 | 2020-04-10 | 电信科学技术研究院 | Cqi估计、sinr确定方法及相关设备 |
WO2017152405A1 (zh) * | 2016-03-10 | 2017-09-14 | 华为技术有限公司 | 一种传输分集方法、设备及系统 |
CN107453851B (zh) * | 2016-05-30 | 2020-02-14 | 华为技术有限公司 | 一种cqi测量方法、装置及无线通信系统 |
CN107733592B (zh) | 2016-08-10 | 2020-11-27 | 华为技术有限公司 | 传输方案指示方法、数据传输方法、装置及系统 |
WO2018027908A1 (en) * | 2016-08-12 | 2018-02-15 | Qualcomm Incorporated | Dynamic multi-beam transmission for new radio technology multiple-input multiple-output |
WO2018059424A1 (zh) * | 2016-09-30 | 2018-04-05 | 电信科学技术研究院 | 一种参考信号映射方法及装置 |
CN107888364B (zh) | 2016-09-30 | 2020-07-21 | 电信科学技术研究院 | 一种参考信号映射方法及装置 |
CN108282321B (zh) * | 2017-01-06 | 2022-03-29 | 华为技术有限公司 | 一种信息指示的方法、网络设备和终端设备 |
CN108289004B (zh) * | 2017-01-09 | 2021-11-26 | 华为技术有限公司 | 一种信道状态信息测量上报的配置方法及相关设备 |
US9979456B1 (en) * | 2017-01-27 | 2018-05-22 | At&T Intellectual Property I, L.P. | Facilitating an enhanced resources indicator for channel state reporting in a wireless communication system |
CN111446995B (zh) * | 2017-04-18 | 2024-08-16 | Oppo广东移动通信有限公司 | 一种用于多天线传输的用户设备、基站中的方法和装置 |
US10462801B2 (en) | 2017-05-05 | 2019-10-29 | At&T Intellectual Property I, L.P. | Multi-antenna transmission protocols for high doppler conditions |
US10470072B2 (en) | 2017-06-15 | 2019-11-05 | At&T Intellectual Property I, L.P. | Facilitation of multiple input multiple output communication for 5G or other next generation network |
WO2019004881A1 (en) * | 2017-06-27 | 2019-01-03 | Telefonaktiebolaget Lm Ericsson (Publ) | FEEDBACK SIGNALING FORMAT SELECTION |
CN109391391B (zh) * | 2017-08-08 | 2020-04-17 | 维沃移动通信有限公司 | 一种用于传输参考信号的方法及装置 |
CN110149643A (zh) * | 2018-02-11 | 2019-08-20 | 索尼公司 | 无线通信系统中的装置和方法、计算机可读存储介质 |
WO2020252613A1 (en) * | 2019-06-17 | 2020-12-24 | Qualcomm Incorporated | System and method that facilitates enhancing channel quality indicator (cqi) feedback |
KR20220034824A (ko) * | 2019-07-11 | 2022-03-18 | 베이징 시아오미 모바일 소프트웨어 컴퍼니 리미티드 | 비면허 스펙트럼에서의 채널 상태 지시 방법, 장치 및 저장 매체 |
KR20220034851A (ko) * | 2019-07-17 | 2022-03-18 | 베이징 시아오미 모바일 소프트웨어 컴퍼니 리미티드 | 정보 지시 방법, 정보 결정 방법 및 장치, 통신 기기 및 저장 매체 (information indication and determination methods and apparatuses, communication device, and storage medium) |
CN114073022B (zh) * | 2019-07-18 | 2024-08-30 | 瑞典爱立信有限公司 | 在大规模mu-mimo系统中的cqi饱和减轻 |
WO2021102858A1 (zh) * | 2019-11-28 | 2021-06-03 | 北京小米移动软件有限公司 | 传输块配置参数传输方法、装置、通信设备及存储介质 |
CN113810318B (zh) * | 2020-06-17 | 2024-04-12 | 上海朗帛通信技术有限公司 | 一种被用于无线通信的用户设备、基站中的方法和装置 |
CN112260778B (zh) * | 2020-10-16 | 2023-02-14 | 展讯半导体(成都)有限公司 | 广播信道的评估方法及相关产品 |
US11924124B2 (en) | 2021-05-24 | 2024-03-05 | Samsung Electronics Co., Ltd. | Set of rules for triggering coordinated beamforming |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101277166A (zh) * | 2008-04-03 | 2008-10-01 | 中兴通讯股份有限公司 | 一种信道质量指示反馈方法 |
CN101841847A (zh) * | 2009-03-18 | 2010-09-22 | 大唐移动通信设备有限公司 | 信道质量指示信息的反馈方法、系统及设备 |
US20100254471A1 (en) * | 2009-04-07 | 2010-10-07 | Hyunsoo Ko | Method of transmitting power information in wireless communication system |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009002087A1 (en) * | 2007-06-25 | 2008-12-31 | Lg Electronics Inc. | Method of transmitting feedback data in multiple antenna system |
CN101111083B (zh) * | 2007-08-13 | 2011-11-30 | 中兴通讯股份有限公司 | 信道质量指数反馈方法 |
CN101383654B (zh) * | 2007-09-05 | 2017-04-19 | 电信科学技术研究院 | 一种tdd模式的信道数据传输方法及一种基站 |
CN101674655A (zh) * | 2009-10-14 | 2010-03-17 | 中兴通讯股份有限公司 | 一种上行及下行信道信息获取方法和系统 |
US8824384B2 (en) * | 2009-12-14 | 2014-09-02 | Samsung Electronics Co., Ltd. | Systems and methods for transmitting channel quality information in wireless communication systems |
CN102045762B (zh) * | 2010-12-02 | 2013-07-24 | 大唐移动通信设备有限公司 | 一种上报信道状态的方法及装置 |
-
2011
- 2011-01-12 CN CN201110023494.1A patent/CN102595469B/zh active Active
-
2012
- 2012-01-12 EP EP12734059.4A patent/EP2654356B1/en active Active
- 2012-01-12 WO PCT/CN2012/070292 patent/WO2012095015A1/zh active Application Filing
- 2012-01-12 US US13/979,381 patent/US9107087B2/en active Active
- 2012-01-12 KR KR20137019545A patent/KR101504446B1/ko active IP Right Grant
- 2012-01-12 ES ES12734059T patent/ES2730979T4/es active Active
- 2012-01-12 JP JP2013548731A patent/JP5649744B2/ja active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101277166A (zh) * | 2008-04-03 | 2008-10-01 | 中兴通讯股份有限公司 | 一种信道质量指示反馈方法 |
CN101841847A (zh) * | 2009-03-18 | 2010-09-22 | 大唐移动通信设备有限公司 | 信道质量指示信息的反馈方法、系统及设备 |
US20100254471A1 (en) * | 2009-04-07 | 2010-10-07 | Hyunsoo Ko | Method of transmitting power information in wireless communication system |
Non-Patent Citations (2)
Title |
---|
"Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures (Release 10)", 3GPP TS 36.213 V10.0.1, December 2010 (2010-12-01), XP050462385 * |
"Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures (Release 10)", 3GPP TS 36.213 V10.4.0, December 2011 (2011-12-01) * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015531211A (ja) * | 2012-08-21 | 2015-10-29 | エルジー エレクトロニクス インコーポレイティド | 無線通信システムにおいてチャネル状態情報(csi)送信方法及び装置 |
US9509471B2 (en) | 2012-08-21 | 2016-11-29 | Lg Electronics Inc. | Method and device for transmitting channel state information in wireless communication system |
US9749106B2 (en) | 2012-08-21 | 2017-08-29 | Lg Electronics Inc. | Method and device for transmitting channel state information in wireless communication system |
JP2016510519A (ja) * | 2012-12-27 | 2016-04-07 | ゼットティーイー (ユーエスエー) インコーポレイテッド | Mimootaをサポートするueの測定のための方法およびシステム |
JP2016509773A (ja) * | 2013-01-03 | 2016-03-31 | インテル コーポレイション | 改良されたチャネル品質情報フィードバック方式 |
WO2014135064A1 (zh) * | 2013-03-05 | 2014-09-12 | 电信科学技术研究院 | 一种通信处理方法及设备 |
WO2016119652A1 (zh) * | 2015-01-30 | 2016-08-04 | 中兴通讯股份有限公司 | Ue上报csi及触发ue上报csi的方法和装置 |
CN111107633A (zh) * | 2018-10-26 | 2020-05-05 | 维沃移动通信有限公司 | Csi上报方法、获取方法和设备 |
CN111107633B (zh) * | 2018-10-26 | 2023-08-25 | 维沃移动通信有限公司 | Csi上报方法、获取方法和设备 |
Also Published As
Publication number | Publication date |
---|---|
ES2730979T3 (es) | 2019-11-13 |
EP2654356A4 (en) | 2017-12-06 |
ES2730979T4 (es) | 2024-01-29 |
JP5649744B2 (ja) | 2015-01-07 |
JP2014507854A (ja) | 2014-03-27 |
EP2654356B1 (en) | 2019-03-13 |
US9107087B2 (en) | 2015-08-11 |
EP2654356A1 (en) | 2013-10-23 |
KR20130103613A (ko) | 2013-09-23 |
CN102595469B (zh) | 2016-11-16 |
KR101504446B1 (ko) | 2015-04-02 |
CN102595469A (zh) | 2012-07-18 |
US20130286884A1 (en) | 2013-10-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5649744B2 (ja) | チャネル品質指示情報を確定する方法及び装置 | |
US9590749B2 (en) | Terminal and method for calculating channel quality indication information | |
JP6955000B2 (ja) | 無線通信システムにおいて干渉測定のための方法及びそのための装置 | |
CN108141317B (zh) | 用于多用户叠加传输的多个csi报告 | |
EP2665220B1 (en) | Method and user equipment for feeding back channel state information | |
JP6037321B2 (ja) | チャネル状態情報を確定する方法及び端末 | |
CN104508988B (zh) | 用在包括多个具有分布式天线的基站的无线通信系统中的参考信号测量方法和装置 | |
US9872190B2 (en) | Method for reporting channel quality information and device thereof | |
WO2011134322A1 (zh) | 信道状态信息的反馈方法及终端 | |
US10433293B2 (en) | Method and apparatus for receiving or transmitting downlink signal in a wireless communication system | |
WO2014019530A1 (zh) | 一种信道状态信息的反馈方法及用户设备 | |
WO2013022266A2 (en) | Method and apparatus for transmitting and receiving channel state information | |
EP2850742A1 (en) | Calculating and reporting channel characteristics | |
WO2011082641A1 (zh) | 一种传输信道质量信息的系统、终端及方法 | |
WO2016019741A1 (zh) | 信道质量/状态指示信息处理方法、装置、终端及基站 | |
CN102170334B (zh) | 信道质量指示信息的获取方法和装置 | |
CN102170334A (zh) | 信道质量指示信息的获取方法和装置 |
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: 12734059 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2013548731 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13979381 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012734059 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 20137019545 Country of ref document: KR Kind code of ref document: A |