WO2022012171A1 - Csi反馈方法、装置、电子设备及存储介质 - Google Patents
Csi反馈方法、装置、电子设备及存储介质 Download PDFInfo
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Definitions
- the present application relates to the field of communication technologies, and in particular, to a CSI feedback method, apparatus, electronic device, and storage medium.
- CSI Channel State Information, channel state information
- MIMO Multi Input Multi Output, multiple input multiple output
- Embodiments of the present application provide a CSI feedback method, apparatus, electronic device, and storage medium, so as to solve the defects of dispersion and complexity of CSI feedback in the prior art, and improve the flexibility and accuracy of CSI feedback.
- an embodiment of the present application provides a CSI feedback method, including:
- CSI feedback is performed according to the CSI measurement resource, the first correspondence, the mapping method, the transmission method used in the CSI measurement, and the corresponding CSI reporting method.
- the determining of CSI measurement resources corresponding to each group of data layers during CSI measurement includes:
- One CSI measurement resource is set for each data layer group.
- the CSI measurement resources include:
- the second number is less than or equal to 2.
- the determining of the first correspondence between each group of data layers and the DMRS ports during CSI measurement includes:
- a DMRS port group is set for each data layer group, and the number of DMRS ports in the DMRS port group is the same as the number of data layers in the corresponding data layer group.
- each DMRS port in the DMRS port group has a QCL relationship.
- the setting of a DMRS port group for each data layer group includes:
- the first formula includes:
- the determining of a mapping manner between each group of data layers and CSI-RS ports during CSI measurement includes:
- a first number of data layers for CSI measurement are mapped onto a third number of CSI-RS ports, the third number being greater than or equal to the first number.
- the first quantity of data layers is divided into a second quantity of data layer groups
- mapping of the first quantity of data layers for CSI measurement to the third quantity of CSI-RS ports includes:
- the number of CSI-RS ports in the CSI-RS port group is greater than or equal to the number of data layers in the corresponding data layer group, and each CSI-RS port group corresponds to one CSI measurement resource.
- the determining the first mapping relationship between each data layer group and the corresponding CSI-RS port group according to the precoding matrix includes:
- the first mapping relationship is determined by using a second formula; wherein, the second formula includes:
- W Group_i represents the precoding matrix corresponding to the i-th data layer group
- the determining of the second mapping relationship between each data layer group and the corresponding CSI-RS port group includes:
- the second mapping relationship is determined by using a third formula; wherein, the third formula includes:
- the third mapping relationship between the setting for each data layer group and the corresponding CSI-RS port group includes:
- the third mapping relationship is determined by using a fourth formula; wherein, the fourth formula includes:
- the transmission mode used in the CSI measurement includes a first transmission mode, and the first transmission mode is used to represent that only one data layer group is transmitted;
- the CSI reporting manner corresponding to the first transmission manner includes a first CSI reporting manner or a second CSI reporting manner;
- the first CSI reporting method includes reporting CSI corresponding to a data layer group and first identification information, where the first identification information is used to represent the CSI-RS port group to which the data layer group to be reported is mapped;
- the second CSI reporting manner includes reporting CSI corresponding to all data layer groups.
- the transmission mode used during the CSI measurement includes a second transmission mode, and the second transmission mode is used to characterize simultaneous transmission of all data layer groups;
- the CSI reporting manner corresponding to the second transmission manner includes reporting the CSI corresponding to all data layer groups.
- the CSI feedback method according to an embodiment of the present application further includes:
- the precoding matrix used by the data layer group to be reported and the number of data layers of the data layer group to be reported are reported;
- the number of data layers of the to-be-reported data layer group is reported.
- the CSI feedback method according to an embodiment of the present application further includes:
- an embodiment of the present application further provides a CSI feedback device, including:
- a first determining module used for CSI measurement resources corresponding to each group of data layers during channel state information CSI measurement
- a second determining module configured to determine the first correspondence between each group of data layers and the demodulation reference signal DMRS ports during CSI measurement;
- a third determining module configured to determine the mapping mode between each group of data layers and the channel state information reference signal CSI-RS ports during CSI measurement;
- a fourth determining module configured to determine a transmission mode used during CSI measurement and a corresponding CSI reporting mode
- a CSI feedback module configured to perform CSI feedback according to the CSI measurement resources, the first correspondence, the mapping mode, the transmission mode used in the CSI measurement, and the corresponding CSI reporting mode.
- an embodiment of the present application further provides an electronic device, including a memory, a processor, and a computer program stored in the memory and running on the processor, where the processor implements any of the above-mentioned programs when executing the program the steps of the CSI feedback method.
- an embodiment of the present application further provides a non-transitory computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements the steps of any of the above-mentioned CSI feedback methods.
- the CSI feedback method, apparatus, electronic device, and storage medium determine the first correspondence between each group of data layers and DMRS ports during CSI measurement by determining the CSI measurement resources corresponding to each group of data layers during CSI measurement relationship, determine the mapping mode between each group of data layers and CSI-RS ports during CSI measurement, determine the transmission mode and corresponding CSI reporting mode used during CSI measurement, and determine the CSI measurement resource, first correspondence, mapping mode, CSI
- the transmission mode used in the measurement and the corresponding CSI reporting mode are used for CSI feedback, thereby improving the flexibility and accuracy of the CSI feedback and reducing the complexity of the CSI feedback.
- FIG. 1 is a schematic flowchart of a CSI feedback method provided by an embodiment of the present application
- FIG. 2 is a schematic structural diagram of a CSI feedback apparatus provided by an embodiment of the present application.
- FIG. 3 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
- FIG. 4 is a schematic structural diagram of an electronic device provided by another embodiment of the present application.
- the feedback of CSI determines the performance of MIMO transmission, so it plays a pivotal role in the entire MIMO design.
- a variety of different feedback types are defined in different standardized versions (Rel-8 to Rel-14) to support CSI channel information feedback of different MIMO transmission schemes. This design leads to different transmission schemes and CSI feedback. Scatter and complicate.
- the system design decouples CSI measurement and CSI feedback methods, separates measurement resources and measurement operations from specific reporting operations, and supports different MIMO transmission methods in a more flexible way in multiple scenarios and multiple frequency bands.
- information such as beam indication and corresponding RSRP (Reference Signal Receiving Power).
- CSI may include CQI (Channel Quality Indication, channel quality indication), PMI (Precoding Matrix Indicator, precoding matrix indication), CRI (Channel State Information-Reference SignalResource Indicator, channel state Information Reference Signal Resource Indication), SSBRI (Synchronization Signal/Physical Broadcast CHannel Block Resource Indicator, synchronization signal/physical broadcast channel block resource indication), LI (Layer Indicator, layer indication), RI (Rank Indicator, rank indication) and L1- RSRP (Layer 1 Reference Signal Received Power, Layer 1 Reference Signal Received Power).
- CQI Channel Quality Indication, channel quality indication
- PMI Precoding Matrix Indicator, precoding matrix indication
- CRI Channel State Information-Reference SignalResource Indicator, channel state Information Reference Signal Resource Indication
- SSBRI Synchronation Signal/Physical Broadcast CHannel Block Resource Indicator, synchronization signal/physical broadcast channel block resource indication
- LI Layer Indicator, layer indication
- RI
- SSBRI, LI and L1-RSRP are newly added feedback amounts based on the CSI feedback of the LTE system.
- LI is used to indicate the strongest column in the PMI, which is used for PT-RS (Phase Tracking-Reference Signal) reference signal mapping.
- SSBRI and L1-RSRP are used for beam management, one indicates beam index and the other indicates beam strength.
- each UE User Equipment, user equipment
- N ⁇ 1 reporting and feedback settings Reporting Setting
- M ⁇ 1 CSI-RS measurement resource settings Reporting Setting
- Each Reporting Setting is associated with one or more Resource Rettings for channel and interference measurement and reporting, so that different measurement sets and reporting combinations can be flexibly set according to different terminal requirements and application scenarios.
- the Reporting setting includes the configuration of the following parameters: CSI feedback parameter (report quantity), codebook configuration, time domain behavior of CSI feedback, frequency domain granularity of PMI and CQI, and measurement constraint configuration.
- the CSI feedback parameter is used to indicate whether the UE performs feedback related to beam management or feedback related to CSI acquisition.
- Periodic, semi-persistent and aperiodic CSI feedback modes are supported in NR.
- the feedback period and feedback slot offset need to be configured in the reporting setting.
- Each reporting setting can be associated with one or two resource settings.
- the feedback slot offset is indicated by dynamic signaling, and each Reporting setting can be associated with 1, 2 or 3 Resource settings.
- Wideband or subband feedback is supported in NR.
- the size of the subband reported by the subband CSI and the bandwidth BWP (Bandwidth Part) actually used by the terminal Because the 5G system bandwidth is generally wide, from the perspective of power saving, the entire system bandwidth is usually divided into different sizes.
- BWP bandwidth
- Each terminal transmits and receives within the allocated BWP bandwidth).
- Each BWP configuration bandwidth can include two candidate subband sizes, which can be configured through RRC (Radio Resource Control, radio resource control).
- RRC Radio Resource Control, radio resource control
- the time domain behavior of CSI-RS in NR can be configured as periodic CSI-RS, semi-persistent CSI-RS and aperiodic CSI-RS.
- Resource settings are used for channel or interference measurements.
- Each resource setting contains S ⁇ 1 resource sets (resource sets), and each resource set contains Ks ⁇ 1 CSI-RS resources.
- NR supports periodic, semi-persistent, and aperiodic resource settings, and its time-domain behavior is configured in the resource setting.
- Aperiodic resource settings can configure one or more resource sets.
- a beam repetition indication parameter repetition is also introduced, which is configured in the resource set to indicate that the CSI-RS in this resource set is used for beam management, and whether to use repeated beam transmission.
- the MIMO schemes introduced in Rel-15 are all for single-point transmission.
- coordinated multi-point is an important technical means in the NR R16 system.
- the application of the coordinated multi-point transmission technology in the NR system has more significant practical significance.
- network deployment in the form of a large number of distributed access points + baseband centralized processing will be more conducive to providing a balanced user experience rate, and significantly reduce the delay and signal transmission caused by handover. make overhead.
- With the increase of frequency bands from the perspective of ensuring network coverage, relatively dense deployment of access points is also required.
- each TRP Transmission Reception Point
- the antenna array of each TRP can be divided into several relatively independent antenna sub-arrays or panels (antenna panels), so the shape and number of ports of the entire array can be adapted to the deployment scenario and business needs. Make flexible adjustments.
- the panels or TRPs can also be connected by optical fibers for more flexible distributed deployment.
- the millimeter wave band as the wavelength decreases, the blocking effect caused by obstacles such as human bodies or vehicles will become more pronounced.
- the coordinated multi-point transmission technology can be roughly divided into two types: coherent and non-coherent transmission.
- coherent transmission each data layer is mapped to multiple TRP/panels through a weighted vector.
- non-coherent transmission each data stream is only mapped to part of the TRP/panel.
- Coherent transmission has higher requirements on the synchronization between transmission points and the transmission capability of backhaul, so it is more sensitive to many non-ideal factors in actual deployment conditions. Relatively speaking, non-coherent transmission is less affected by the above factors, so it is a key consideration in NR multipoint transmission technology.
- the signals sent by different TRP/panels may have relatively independent large-scale features, such as average delay, delay spread, average Doppler shift, Doppler spread, and spatial domain. receive parameters, etc. Therefore, in the NR system, the situation where the large-scale parameters of two or more reference signal channels are consistent is called QCL (Quasi Co-Location, quasi co-location). Otherwise, it is called non-QCL. It is stipulated in the NR system that DMRS (Demodulation Reference Signal, demodulation reference signal) ports in the same CDM (Code Division Multiplexing, code division multiplexing) group have a QCL relationship.
- DMRS Demodulation Reference Signal, demodulation reference signal
- the DM-RS port of the NR system is multiplexed by means of FDM (Frequency Division Multiplexing, frequency division multiplexing) plus CDM (Code Division Multiplexing, code division multiplexing).
- FDM Frequency Division Multiplexing, frequency division multiplexing
- CDM Code Division Multiplexing, code division multiplexing
- Each CDM group is divided into multiple ports by means of orthogonal code division multiplexing, that is, OCC (Orthogonal Cover Code, orthogonal mask), and the CDM groups are distinguished by means of FDM.
- NR supports two pilot types, and the pilot type used is configured through high-level signaling.
- R16 introduces three types of multi-TRP cooperative transmission solutions:
- M-DCI Downlink Control Information, downlink control information
- each TRP can be scheduled independently, so it has high flexibility.
- the transmission and control instructions of each TRP are relatively independent, which is suitable for scenarios where the quality of the backhaul link is not ideal and cannot be closely coordinated;
- One PDSCH is scheduled using a single PDCCH, in which each layer is only transmitted through one TRP, which is referred to as the S-DCI scheme for short.
- the data layers sent by each TRP use the same resource allocation, and in the single-codeword transmission of no more than four layers, all layers use the same MCS. Since the time-frequency resources occupied by each layer completely overlap, the S-DCI scheme has higher frequency band utilization efficiency. However, since each TRP needs to send the same PDSCH together, closer cooperation between TRPs is required. Therefore, the capacity requirement of the backhaul link is relatively high. In addition, when the channel quality of each TRP is significantly different, the S-DCI scheme may not be able to independently adjust the MCS (Modulation and Coding Scheme, modulation and coding strategy) according to the channel of each TRP, nor can it independently allocate resources;
- MCS Modulation and Coding Scheme, modulation and coding strategy
- URLLC enhancement scheme Ultra-Reliable and Low Latency Communication, high reliability and low latency communication.
- the URLLC enhancement scheme uses the S-DCI mechanism as a whole.
- the cooperation of multiple TRPs can be used to introduce redundancy in the space domain, time domain, and frequency domain to improve reliability/reduce delay.
- the CSI feedback mechanism defined in Rel-15 is mainly aimed at single-point transmission and coherent multi-point transmission, and cannot well support multi-point non-coherent transmission.
- each TRP independently measures and reports CSI. Moreover, in the calculation process of CSI, the actual scheduling and transmission conditions cannot be reflected.
- embodiments of the present application provide a CSI feedback method, apparatus, electronic device, and storage medium, so as to improve the flexibility and accuracy of CSI feedback.
- the CSI feedback method, apparatus, electronic device, and storage medium provided by the embodiments of the present application can be applied to a wireless communication system or a system combining wireless and wired.
- a wireless communication system or a system combining wireless and wired.
- 5G systems such as NR systems
- 6G systems such as NR systems
- satellite systems such as NR systems
- Internet of Vehicles systems such as NR systems
- evolved long-term evolution systems such as Long-term evolution systems
- subsequent evolved communication systems of the above systems etc.
- the base stations provided in the embodiments of the present application may include, but are not limited to, one or more of the following: a commonly used base station, an evolved node base station (eNB), a base station in a 5G system (for example, a next-generation base station (next). generation node base station, gNB), transmission and reception point (transmission and reception point, TRP)) and other devices.
- a commonly used base station an evolved node base station (eNB), a base station in a 5G system (for example, a next-generation base station (next). generation node base station, gNB), transmission and reception point (transmission and reception point, TRP)) and other devices.
- eNB evolved node base station
- gNB next-generation base station
- TRP transmission and reception point
- the terminal provided in this embodiment of the present application may also be referred to as user equipment (User Equipment, UE) or the like.
- Terminals include but are not limited to handheld devices and vehicle-mounted devices.
- it may be a mobile phone, a tablet computer, a notebook computer, an Ultra-Mobile Personal Computer (UMPC), a netbook, or a Personal Digital Assistant (PDA).
- UMPC Ultra-Mobile Personal Computer
- PDA Personal Digital Assistant
- FIG. 1 is a flowchart of a CSI feedback method provided by an embodiment of the present application.
- the CSI feedback method can be used in an electronic device capable of implementing CSI feedback, such as a terminal; as shown in FIG. 1 , the CSI feedback method may include the following step:
- each group of data layers is sent through one TRP, and the network side will associate CSI measurement resources corresponding to different TRPs through configuration and instruction signaling in advance, and then notify the terminal to use these CSI measurement resources.
- the measurement resource is used for CSI measurement of coordinated multi-point transmission.
- the CSI measurement resources may include:
- the network side associates CSI-RS resources corresponding to different TRPs through configuration and indication signaling, or associates CSI-RS resource sets corresponding to different TRPs, or associates CSI-RS resources corresponding to different TRPs in the same resource - Associate the subsets of RS ports, and then notify the terminal to use CSI-RS resources corresponding to different TRPs, or sets of CSI-RS resources corresponding to different TRPs, or subsets of CSI-RS ports corresponding to different TRPs in the same resource CSI measurement of coordinated multi-point transmission is performed.
- one data layer corresponds to one DMRS port.
- the PDSCH used by the user for CSI measurement using CSI-RS transmits v data layers, where each data layer corresponds to a DMRS port; if the v data layers for simultaneous CSI measurement can be divided into at most two groups (corresponding to one TRP respectively), then each group of data layers corresponds to a group of DMRS ports during PDSCH transmission.
- each CSI-RS port group corresponds to one CSI-RS resource, or different CSI-RS port groups correspond to different CSI-RS port subsets in the same CSI-RS resource.
- the user when using CSI-RS to measure CSI, the user can determine the transmission mode and the corresponding CSI reporting mode to be used according to the actual situation.
- S105 Perform CSI feedback according to the CSI measurement resources, the first correspondence, the mapping method, the transmission method used during CSI measurement, and the corresponding CSI reporting method.
- the data layers may be grouped according to the data of the TRP, and each group of obtained data layers corresponds to one TRP.
- the second number may be less than or equal to two.
- the PDSCH used by the user for CSI measurement using CSI-RS transmits v data layers, and the v data layers are divided into two groups:
- Data layer group 1 includes the following N 1 data layers:
- the data layer group 2 includes the following N 2 data layers:
- the CSI measurement resources may include:
- one CSI-RS resource is set for each data layer group, or different CSI-RS port subsets in the same CSI-RS resource.
- a second number of data layer groups are obtained, and a CSI measurement resource is set for each data layer group, thereby realizing a data layer-based method.
- the CSI measurement resource configuration of the group meets different terminal requirements and application scenarios, and improves the flexibility of CSI feedback.
- the total number of data layer groups is the same as the total number of DMRS port groups.
- the DMRS port group can be set by using the first formula; wherein, the first formula includes:
- the PDSCH used by the user for CSI measurement using CSI-RS transmits v data layers, and the v data layers are divided into two groups:
- Data layer group 1 includes the following N 1 data layers:
- the data layer group 2 includes the following N 2 data layers:
- each DMRS port in the above-mentioned DMRS port group has a QCL relationship.
- the DMRS ports can be grouped according to the QCL relationship, that is, the ports of each DMRS port group are all from the same DMRS CDM group (the sum of the number of ports in the two DMRS port groups is equal to v).
- DMRS port group 1 is CDM group
- DMRS port group 2 is CDM group 1.
- the number of the DMRS ports in the DMRS port group is the same as the number of data layers in the corresponding data layer group, thereby realizing the data layer group-based.
- DMRS port configuration that is, one data layer corresponds to one DMRS port.
- each CSI-RS port group corresponds to one CSI-RS resource, or different CSI-RS port groups correspond to different CSI-RS port subsets in the same CSI-RS resource.
- the first quantity of data layers is divided into a second quantity of data layer groups; when executing 1031, it may include:
- the number of CSI-RS ports in the CSI-RS port group is greater than or equal to the number of data layers in the corresponding data layer group, and each CSI-RS port group corresponds to one CSI measurement resource.
- the first mapping relationship can be determined by using a second formula; wherein, the second formula includes:
- W Group_i represents the precoding matrix corresponding to the i-th data layer group
- the PDSCH used by the user for CSI measurement using CSI-RS transmits v data layers, and the v data layers are divided into two groups:
- Data layer group 1 includes the following N 1 data layers:
- the data layer group 2 includes the following N 2 data layers:
- the first mapping relationship between data layer group 1 and CSI-RS port group 1 is as follows:
- the N1 data layers corresponding to the first group of DMRS ports are mapped to the M1 CSI-RS ports included in the CSI-RS port group 1 as follows.
- M1 is greater than or equal to N1.
- W Group1 represents the precoding matrix used by the terminal for data layer group 1 transmission during CSI reporting.
- the first mapping relationship between the data layer group 2 and the CSI-RS port group 2 is as follows:
- N2 data layers corresponding to the second group of DMRS ports are mapped to the M2 CSI-RS ports included in the CSI-RS port group 2 in the following manner.
- M2 is greater than or equal to N2.
- W Group2 represents the precoding matrix used by the terminal for data layer group 2 transmission during CSI reporting.
- the second mapping relationship can be determined by using a third formula; wherein, the third formula includes:
- the network side further indicates the second correspondence between each group of data layers and CSI-RS ports used in CSI measurement and calculation.
- the network indicates that it does not require PMI reporting (non-PMI-PortIndication):
- R ⁇ 1,2,...,P ⁇ is the rank number
- P ⁇ 1,2,4,8 ⁇ is the number of CSI-RS ports.
- the N1 data layers corresponding to the first group of DMRS ports are mapped to the N1 CSI-RS ports included in the CSI-RS port group 1 as follows.
- the second mapping relationship between data layer group 2 and CSI-RS port group 2 is as follows:
- the N2 data layers corresponding to the second group of DMRS ports are mapped to the N2 CSI-RS ports included in the CSI-RS port group 2 in the following manner.
- the third mapping relationship can be determined by using a fourth formula; wherein, the fourth formula includes:
- the network side does not indicate the second correspondence between each group of data layers and CSI-RS ports used in CSI measurement and calculation.
- the report Quantity is configured to require reporting of CRI, RI and CQI (ie, cri-RI-CQI reporting), but no PMI reporting (non-PMI-PortIndication) is required if it is not configured.
- the N1 data layers corresponding to the first group of DMRS ports are mapped to the N1 CSI-RS ports included in the CSI-RS port group 1 as follows.
- the third mapping relationship between the data layer group 2 and the CSI-RS port group 2 is as follows:
- the N2 data layers corresponding to the second group of DMRS ports are mapped to the N2 CSI-RS ports included in the CSI-RS port group 2 in the following manner.
- the first mapping relationship between each data layer group and the corresponding CSI-RS port group can be determined according to the precoding matrix; when the PMI does not need to be reported and the network side has indicated each group of data layers
- the second mapping relationship between each data layer group and the corresponding CSI-RS port group can be determined according to the second corresponding relationship; if it is not necessary to report the PMI , and the network side does not indicate the second corresponding relationship, then a third mapping relationship with the corresponding CSI-RS port group may be set for each data layer group, wherein the CSI in the CSI-RS port group - The number of RS ports is greater than or equal to the number of data layers in the corresponding data layer group, and each CSI
- the transmission mode used during the CSI measurement in the above-mentioned S104 may include a first transmission mode, and the first transmission mode is used to represent that only one data layer group is transmitted;
- the CSI reporting manner corresponding to the first transmission manner includes a first CSI reporting manner or a second CSI reporting manner;
- the first CSI reporting method includes reporting CSI corresponding to a data layer group and first identification information, where the first identification information is used to represent the CSI-RS port group to which the data layer group to be reported is mapped;
- the second CSI reporting manner includes reporting CSI corresponding to all data layer groups.
- the first transmission mode is a DPS (Dynamic Point Selection, dynamic transmission point selection) transmission mode.
- DPS Dynamic Point Selection, dynamic transmission point selection
- the first transmission mode represents that only the data layer group 1 is transmitted, and only the data layer group 2 may be transmitted.
- the two groups of data layers correspond to CSI-RS group 1 and CSI-RS group 2 respectively.
- the signal corresponding to a data layer group received by the terminal is:
- the signal corresponding to a certain data layer group received by the terminal is:
- the signal corresponding to a certain data layer group received by the terminal is:
- H CSI-RSGroup1 is the channel matrix measured by CSI-RS group 1
- H CSI-RSGroup2 is the channel matrix measured by CSI-RS group 2.
- the above-mentioned first CSI reporting manner may only report the CSI corresponding to the data layer group 1, or only report the CSI corresponding to the data layer group 2.
- the precoding matrix used for data layer group 1 or 2 also needs to be reported, and the number of data layers included in data layer group 1 or 2 must be reported;
- the above-mentioned second CSI reporting manner may report the CSI corresponding to the data layer group 1 and the data layer group 2.
- the precoding matrix used for data layer groups 1 and 2 can be reported, and the number of data layers included in data layer groups 1 and 2 can be reported;
- CQI can also be reported, and information such as CRI may also need to be reported.
- the transmission mode used in the CSI measurement in the above S104 may include a second transmission mode, and the second transmission mode is used to represent the simultaneous transmission of all data layer groups;
- the CSI reporting manner corresponding to the second transmission manner includes reporting the CSI corresponding to all data layer groups.
- the second transmission mode is an NCJT (Non-Coherent Joint Transmission, non-coherent cooperative transmission) transmission mode.
- NCJT Non-Coherent Joint Transmission, non-coherent cooperative transmission
- the second transmission mode represents simultaneous transmission of data layer group 1 and data layer group 2.
- the signals corresponding to the two data layer groups received by the terminal are:
- the signals corresponding to the two data layer groups received by the terminal are:
- the signals corresponding to the two data layer groups received by the terminal are:
- H CSI-RSGroup1 is the channel matrix measured by CSI-RS group 1
- H CSI-RSGroup2 is the channel matrix measured by CSI-RS group 2
- the terminal can report the precoding matrix used for data layer group 1 and data layer group 2, and report the number of data layers included in data layer group 1 and data layer group 2;
- CQI and other information may also be reported, and CRI and other information may also need to be reported.
- the CSI reporting method in the above S104 further includes:
- the precoding matrix used by the data layer group to be reported and the number of data layers of the data layer group to be reported are reported;
- the number of data layers of the to-be-reported data layer group is reported.
- the CSI reporting method in the above S104 further includes:
- the transmission mode used in CSI measurement may include a first transmission mode, which is used to represent that only one data layer group is transmitted; or may include: a second transmission mode, the second transmission mode The mode is used to characterize the simultaneous transmission of all data layer groups; and, the CSI reporting mode corresponding to the first transmission mode includes the first CSI reporting mode or the second CSI reporting mode, and the first CSI reporting mode includes reporting the CSI and CSI corresponding to one data layer group.
- the first identification information, the second CSI reporting mode includes reporting the CSI corresponding to all data layer groups, and the CSI reporting mode corresponding to the second transmission mode includes reporting the CSI corresponding to all data layer groups, thereby realizing the data layer group-based transmission mode and
- the configuration of the reporting method satisfies different terminal requirements and application scenarios, and improves the flexibility of CSI feedback.
- FIG. 2 is a block diagram of a module of a CSI feedback apparatus provided by an embodiment of the present application.
- the CSI feedback apparatus may be used in an electronic device capable of implementing CSI feedback, such as a terminal; as shown in FIG. 2 , the CSI feedback apparatus may include:
- the first determination module 21 is used for CSI measurement resources corresponding to each group of data layers during channel state information CSI measurement;
- the second determining module 22 is configured to determine the first correspondence between each group of data layers and the demodulation reference signal DMRS ports during CSI measurement;
- a third determining module 23 configured to determine the mapping mode between each group of data layers and the channel state information reference signal CSI-RS ports during CSI measurement;
- a fourth determining module configured to determine a transmission mode and a corresponding CSI reporting mode used during CSI measurement
- the CSI feedback module 25 is configured to perform CSI feedback according to the CSI measurement resource, the first correspondence, the mapping method, the transmission method used in the CSI measurement, and the corresponding CSI reporting method.
- the first determining module 21 may include:
- a grouping submodule configured to group the first number of data layers used for CSI measurement to obtain a second number of data layer groups
- the CSI measurement resource setting submodule is used for setting one CSI measurement resource for each data layer group.
- the CSI measurement resources include:
- the second number is less than or equal to 2.
- the second determining module 22 may include:
- the DMRS port group setting sub-module is configured to set a DMRS port group for each data layer group, and the number of DMRS ports in the DMRS port group is the same as the number of data layers in the corresponding data layer group.
- each DMRS port in the DMRS port group has a QCL relationship.
- the DMRS port group setting submodule is specifically used for:
- the first formula includes:
- the third determining module 23 may include:
- a mapping submodule configured to map a first number of data layers for CSI measurement to a third number of CSI-RS ports, where the third number is greater than or equal to the first number.
- the mapping submodule includes:
- a first determining unit configured to determine a precoding matrix corresponding to each data layer group if it is necessary to report a precoding matrix indicating PMI, and determine each data layer group and a corresponding CSI-RS port group according to the precoding matrix
- the second determination unit is configured to determine each data layer group according to the second correspondence if the PMI does not need to be reported and the network side has indicated the second correspondence between each group of data layers and the CSI-RS ports a second mapping relationship with the corresponding CSI-RS port group;
- a third determining unit configured to set a third mapping relationship with the corresponding CSI-RS port group for each data layer group if the PMI does not need to be reported and the network side does not indicate the second corresponding relationship;
- the number of CSI-RS ports in the CSI-RS port group is greater than or equal to the number of data layers in the corresponding data layer group, and each CSI-RS port group corresponds to one CSI measurement resource.
- the first determining unit is specifically used for:
- the first mapping relationship is determined by using a second formula; wherein, the second formula includes:
- W Group_i represents the precoding matrix corresponding to the i-th data layer group
- the second determining unit is specifically used for:
- the second mapping relationship is determined by using a third formula; wherein, the third formula includes:
- the third determining unit is specifically used for:
- the third mapping relationship is determined by using a fourth formula; wherein, the fourth formula includes:
- the transmission mode used in the CSI measurement includes a first transmission mode, and the first transmission mode is used to represent that only one data layer group is transmitted;
- the CSI reporting manner corresponding to the first transmission manner includes a first CSI reporting manner or a second CSI reporting manner;
- the first CSI reporting method includes reporting CSI corresponding to a data layer group and first identification information, where the first identification information is used to represent the CSI-RS port group to which the data layer group to be reported is mapped;
- the second CSI reporting manner includes reporting CSI corresponding to all data layer groups.
- the transmission mode used in the CSI measurement includes a second transmission mode, and the second transmission mode is used to represent the simultaneous transmission of all data layer groups;
- the CSI reporting manner corresponding to the second transmission manner includes reporting the CSI corresponding to all data layer groups.
- the CSI feedback module 25 is also used for:
- the precoding matrix used by the data layer group to be reported and the number of data layers of the data layer group to be reported are reported;
- the number of data layers of the to-be-reported data layer group is reported.
- the CSI feedback module 25 is also used for:
- FIG. 3 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.
- the electronic device may be a terminal; as shown in FIG. 3, the electronic device 300 may include: at least one processor 301, memory 302, at least one network interface 304 and other user interfaces 303.
- the various components in electronic device 300 are coupled together by bus system 305 .
- the bus system 305 is used to implement the connection communication between these components.
- the bus system 305 also includes a power bus, a control bus and a status signal bus.
- the various buses are labeled as bus system 305 in FIG. 3 .
- the user interface 303 may include a display, a keyboard or a pointing device, such as a mouse, a trackball, a touch pad or a touch screen, and the like.
- the memory 302 in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
- the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically programmable read-only memory (Erasable PROM, EPROM). Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
- Volatile memory may be Random Access Memory (RAM), which acts as an external cache.
- RAM Static RAM
- DRAM Dynamic RAM
- SDRAM Synchronous DRAM
- SDRAM double data rate synchronous dynamic random access memory
- Double Data Rate SDRAM DDRSDRAM
- enhanced SDRAM ESDRAM
- synchronous link dynamic random access memory Synchlink DRAM, SLDRAM
- Direct Rambus RAM Direct Rambus RAM
- the memory 302 stores the following elements, executable modules or data structures, or a subset thereof, or an extended set of them, such as an operating system 3021 and applications 3022.
- the operating system 3021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks.
- the application program 3022 includes various application programs, such as a media player (Media Player), a browser (Browser), etc., for implementing various application services.
- the program for implementing the method of the embodiment of the present application may be included in the application program 3022 .
- the processor 301 by calling the computer program or instruction stored in the memory 302, specifically, the computer program or instruction stored in the application program 3022, the processor 301 is configured to:
- CSI feedback is performed according to the CSI measurement resource, the first correspondence, the mapping method, the transmission method used in the CSI measurement, and the corresponding CSI reporting method.
- the methods disclosed in the above embodiments of the present application may be applied to the processor 301 or implemented by the processor 301 .
- the processor 301 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above-mentioned method can be completed by an integrated logic circuit of hardware in the processor 301 or an instruction in the form of software.
- the above-mentioned processor 301 can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
- a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
- the steps of the methods disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
- the software module may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art.
- the storage medium is located in the memory 302, and the processor 301 reads the information in the memory 302, and completes the steps of the above method in combination with its hardware.
- the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof.
- the processing unit can be implemented in one or more Application Specific Integrated Circuits (ASIC), Digital Signal Processing (DSP), Digital Signal Processing Device (DSP Device, DSPD), programmable Logic Devices (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), General Purpose Processors, Controllers, Microcontrollers, Microprocessors, Others for performing the functions described herein electronic unit or a combination thereof.
- ASIC Application Specific Integrated Circuits
- DSP Digital Signal Processing
- DSP Device Digital Signal Processing Device
- DSPD Digital Signal Processing Device
- PLD programmable Logic Devices
- Field-Programmable Gate Array Field-Programmable Gate Array
- FPGA Field-Programmable Gate Array
- the described techniques may be implemented through modules (such as procedures, functions, etc.) that perform the functions described in the embodiments of the present application.
- Software codes may be stored in memory and executed by a processor.
- the memory can be implemented in the processor or external to the processor.
- the processor 301 is further configured to:
- the channel state information CSI measurement resources corresponding to each group of data layers when determining the CSI measurement include:
- One CSI measurement resource is set for each data layer group.
- the processor 301 is further configured to:
- the CSI measurement resources include:
- the processor 301 is further configured to:
- the second number is less than or equal to two.
- the processor 301 is further configured to:
- the first correspondence between each group of data layers and the DMRS ports when determining the CSI measurement includes:
- a DMRS port group is set for each data layer group, and the number of DMRS ports in the DMRS port group is the same as the number of data layers in the corresponding data layer group.
- the processor 301 is further configured to:
- Each DMRS port in the DMRS port group has a QCL relationship.
- the processor 301 is further configured to:
- the described setting a DMRS port group for each data layer group including:
- the first formula includes:
- the processor 301 is further configured to:
- Determining the mapping mode between each group of data layers and CSI-RS ports during CSI measurement includes:
- a first number of data layers for CSI measurement are mapped onto a third number of CSI-RS ports, the third number being greater than or equal to the first number.
- the processor 301 is further configured to:
- the first number of data layers is divided into a second number of data layer groups
- mapping of the first quantity of data layers for CSI measurement to the third quantity of CSI-RS ports includes:
- the precoding matrix indicating PMI determines the precoding matrix corresponding to each data layer group, and determine the first mapping relationship between each data layer group and the corresponding CSI-RS port group according to the precoding matrix ;
- the number of CSI-RS ports in the CSI-RS port group is greater than or equal to the number of data layers in the corresponding data layer group, and each CSI-RS port group corresponds to one CSI measurement resource.
- the processor 301 is further configured to:
- the determining the first mapping relationship between each data layer group and the corresponding CSI-RS port group according to the precoding matrix includes:
- the first mapping relationship is determined by using a second formula; wherein, the second formula includes:
- W Group_i represents the precoding matrix corresponding to the i-th data layer group
- the determining of the second mapping relationship between each data layer group and the corresponding CSI-RS port group includes:
- the second mapping relationship is determined by using a third formula; wherein, the third formula includes:
- the third mapping relationship between the setting for each data layer group and the corresponding CSI-RS port group includes:
- the third mapping relationship is determined by using a fourth formula; wherein, the fourth formula includes:
- the processor 301 is further configured to:
- the transmission mode used in the CSI measurement includes a first transmission mode, and the first transmission mode is used to represent that only one data layer group is transmitted;
- the CSI reporting manner corresponding to the first transmission manner includes a first CSI reporting manner or a second CSI reporting manner;
- the first CSI reporting method includes reporting CSI corresponding to a data layer group and first identification information, where the first identification information is used to represent the CSI-RS port group to which the data layer group to be reported is mapped;
- the second CSI reporting manner includes reporting CSI corresponding to all data layer groups.
- the processor 301 is further configured to:
- the transmission mode used in the CSI measurement includes a second transmission mode, where the second transmission mode is used to represent simultaneous transmission of all data layer groups;
- the CSI reporting manner corresponding to the second transmission manner includes reporting the CSI corresponding to all data layer groups.
- the processor 301 is further configured to:
- the precoding matrix used by the data layer group to be reported and the number of data layers of the data layer group to be reported are reported;
- the number of data layers of the to-be-reported data layer group is reported.
- the processor 301 is further configured to:
- the electronic device provided in the embodiments of the present application can implement each process implemented by the electronic device in the foregoing embodiments, and to avoid repetition, details are not described herein again.
- the electronic device may be a terminal; the electronic device in FIG. 4 may be a mobile phone, a tablet computer, a personal digital assistant (Personal Digital Assistant, PDA), Or, electronic readers, handheld game consoles, point of sales (Point of Sales, POS), vehicle electronic equipment (vehicle computer) and so on.
- the electronic device includes a radio frequency (RF) circuit 410 , a memory 420 , an input unit 430 , a display unit 440 , a processor 460 , an audio circuit 470 , a WiFi (Wireless-Fidelity) module 480 and a power supply 490 .
- RF radio frequency
- the structure of the mobile phone shown in FIG. 4 does not constitute a limitation on the mobile phone, and may include more or less components than the one shown in the figure, or combine some components, or separate some components, or Different component arrangements.
- the input unit 430 can be used to receive numerical or character information input by the user, and generate signal input related to user setting and function control of the electronic device.
- the input unit 430 may include a touch panel 4301 .
- the touch panel 4301 also known as a touch screen, can collect the user's touch operations on or near it (such as the user's operations on the touch panel 4301 using any suitable objects or accessories such as a finger, a stylus, etc.)
- the specified program drives the corresponding connection device.
- the touch panel 4301 may include two parts, a touch detection device and a touch controller.
- the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it to the touch controller.
- the touch panel 4301 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves.
- the input unit 430 may also include other input devices 4302, which may be used to receive input numerical or character information, and generate key signal input related to user settings and function control of the electronic device.
- other input devices 4302 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, joysticks, optical mice (optical mice are touch-sensitive mice that do not display visual output) surface, or an extension of a touch-sensitive surface formed by a touch screen), etc.
- the display unit 440 may be used to display information input by the user or information provided to the user and various menu interfaces of the electronic device.
- the display unit 440 may include a display panel 4401 .
- the display panel 4401 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an organic light-emitting diode (Organic Light-Emitting Diode, OLED), and the like.
- the touch panel 4301 can cover the display panel 4401 to form a touch display screen.
- the touch display screen detects a touch operation on or near it, it is transmitted to the processor 460 to determine the type of the touch event, and then the processor 460 provides corresponding visual output on the touch display screen according to the type of touch event.
- the touch screen includes the application program interface display area and the commonly used controls display area.
- the arrangement of the application program interface display area and the common control display area is not limited, and may be an arrangement that can distinguish the two display areas, such as up-down arrangement, left-right arrangement, or the like.
- the application program interface display area can be used to display the interface of the application program. Each interface may contain at least one application icon and/or interface elements such as widget desktop controls.
- the application program interface display area can also be an empty interface that does not contain any content.
- the commonly used control display area is used to display controls with high usage rate, such as setting buttons, interface numbers, scroll bars, phonebook icons and other application icons.
- the RF circuit 410 can be used for receiving and sending signals during sending and receiving of information or during a call. In particular, after receiving downlink information from the network side, it is processed by the processor 460; in addition, it sends the designed uplink data to the network side.
- the RF circuit 410 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like.
- LNA Low Noise Amplifier
- RF circuitry 410 may also communicate with networks and other devices via wireless communications.
- the wireless communication can use any communication standard or protocol, including but not limited to Global System of Mobilecommunication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (Code Division) Multiple Access, CDMA), Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA), Long Term Evolution (Long Term Evolution, LTE), email, Short Messaging Service (Short Messaging Service, SMS), etc.
- GSM Global System of Mobilecommunication
- GPRS General Packet Radio Service
- CDMA Code Division Multiple Access
- WCDMA Wideband Code Division Multiple Access
- LTE Long Term Evolution
- SMS Short Messaging Service
- the memory 420 is used for storing software programs and modules, and the processor 460 executes various functional applications and data processing of the electronic device by running the software programs and modules stored in the memory 420.
- the memory 420 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program (such as a sound playback function, an image playback function, etc.) required for at least one function, and the like; Data created by the use of electronic equipment (such as audio data, phone book, etc.), etc.
- memory 420 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
- the processor 460 is the control center of the electronic device, and uses various interfaces and lines to connect various parts of the entire mobile phone, by running or executing the software programs and/or modules stored in the first memory 4201, and calling the software programs and/or modules stored in the second memory. 4202, perform various functions of the electronic equipment and process data, so as to monitor the electronic equipment as a whole.
- processor 460 may include one or more processing units.
- the processor 460 by calling and storing software programs and/or modules in the first memory 4201 and/or data in the second memory 4202, the processor 460 is configured to
- CSI feedback is performed according to the CSI measurement resource, the first correspondence, the mapping method, the transmission method used in the CSI measurement, and the corresponding CSI reporting method.
- processor 460 is further configured to:
- the channel state information CSI measurement resources corresponding to each group of data layers when determining the CSI measurement include:
- One CSI measurement resource is set for each data layer group.
- processor 460 is further configured to:
- the CSI measurement resources include:
- processor 460 is further configured to:
- the second number is less than or equal to two.
- processor 460 is further configured to:
- the first correspondence between each group of data layers and the DMRS ports when determining the CSI measurement includes:
- a DMRS port group is set for each data layer group, and the number of DMRS ports in the DMRS port group is the same as the number of data layers in the corresponding data layer group.
- processor 460 is further configured to:
- Each DMRS port in the DMRS port group has a QCL relationship.
- processor 460 is further configured to:
- the described setting a DMRS port group for each data layer group including:
- the first formula includes:
- processor 460 is further configured to:
- Determining the mapping mode between each group of data layers and CSI-RS ports during CSI measurement includes:
- a first number of data layers for CSI measurement are mapped onto a third number of CSI-RS ports, the third number being greater than or equal to the first number.
- processor 460 is further configured to:
- the first number of data layers is divided into a second number of data layer groups
- mapping of the first quantity of data layers used for CSI measurement to the third quantity of CSI-RS ports includes:
- the precoding matrix corresponding to each data layer group is determined, and the first mapping relationship between each data layer group and the corresponding CSI-RS port group is determined according to the precoding matrix ;
- a third mapping relationship with the corresponding CSI-RS port group is set for each data layer group;
- the number of CSI-RS ports in the CSI-RS port group is greater than or equal to the number of data layers in the corresponding data layer group, and each CSI-RS port group corresponds to one CSI measurement resource.
- processor 460 is further configured to:
- the determining the first mapping relationship between each data layer group and the corresponding CSI-RS port group according to the precoding matrix includes:
- the first mapping relationship is determined by using a second formula; wherein, the second formula includes:
- W Group_i represents the precoding matrix corresponding to the i-th data layer group
- the determining of the second mapping relationship between each data layer group and the corresponding CSI-RS port group includes:
- the second mapping relationship is determined by using a third formula; wherein, the third formula includes:
- the third mapping relationship between the setting for each data layer group and the corresponding CSI-RS port group includes:
- the third mapping relationship is determined by using a fourth formula; wherein, the fourth formula includes:
- processor 460 is further configured to:
- the transmission mode used in the CSI measurement includes a first transmission mode, and the first transmission mode is used to represent that only one data layer group is transmitted;
- the CSI reporting manner corresponding to the first transmission manner includes a first CSI reporting manner or a second CSI reporting manner;
- the first CSI reporting method includes reporting CSI corresponding to a data layer group and first identification information, where the first identification information is used to represent the CSI-RS port group to which the data layer group to be reported is mapped;
- the second CSI reporting manner includes reporting CSI corresponding to all data layer groups.
- processor 460 is further configured to:
- the transmission mode used in the CSI measurement includes a second transmission mode, where the second transmission mode is used to represent simultaneous transmission of all data layer groups;
- the CSI reporting manner corresponding to the second transmission manner includes reporting the CSI corresponding to all data layer groups.
- processor 460 is further configured to:
- the precoding matrix used by the data layer group to be reported and the number of data layers of the data layer group to be reported are reported;
- the number of data layers of the to-be-reported data layer group is reported.
- processor 460 is further configured to:
- the electronic device provided in the embodiments of the present application can implement various processes implemented by the electronic device in the foregoing embodiments, and to avoid repetition, details are not described herein again.
- the electronic device provided by the embodiments of the present application includes corresponding hardware structures and/or software modules for executing each function.
- the unit and algorithm steps of each example described in conjunction with the embodiments disclosed in this application can be implemented in hardware or in a combination of hardware and computer software.
- each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module.
- the above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules.
- the disclosed apparatus and method may be implemented in other manners.
- the device embodiments described above are only illustrative.
- the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods.
- multiple units or components may be Incorporation may either be integrated into another system, or some features may be omitted, or not implemented.
- the shown or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection of devices or units through some interfaces.
- the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
- each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
- the above-mentioned integrated units may be implemented in the form of software functional units.
- the integrated unit if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium.
- the computer software product is stored in a storage medium and includes several instructions for making a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present application.
- the computer storage medium is a non-transitory (English: nontransitory) medium, including: flash memory, removable hard disk, read-only memory, random access memory, magnetic disk or optical disk and other mediums that can store program codes.
- an embodiment of the present application further provides a computer program product
- the computer program product includes a computer program stored on a non-transitory computer-readable storage medium
- the computer program includes program instructions, when the program instructions When executed by a computer, the computer can execute the CSI feedback method provided by the above method embodiments, and the method includes:
- CSI feedback is performed according to the CSI measurement resource, the first correspondence, the mapping method, the transmission method used in the CSI measurement, and the corresponding CSI reporting method.
- an embodiment of the present application further provides a non-transitory computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, is implemented to perform the methods provided by the foregoing embodiments, including:
- CSI feedback is performed according to the CSI measurement resource, the first correspondence, the mapping method, the transmission method used in the CSI measurement, and the corresponding CSI reporting method.
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Abstract
本申请实施例提供一种CSI反馈方法、装置、电子设备及存储介质,该CSI反馈方法包括:确定CSI测量时每组数据层对应的CSI测量资源;确定CSI测量时每组数据层与DMRS端口之间的第一对应关系;确定CSI测量时每组数据层与CSI-RS端口之间的映射方式;确定CSI测量时使用的传输方式和对应的CSI上报方式;根据所述CSI测量资源、所述第一对应关系、所述映射方式、所述CSI测量时使用的传输方式和对应的CSI上报方式进行CSI反馈。因此,本申请实施例提高了CSI反馈的灵活性和准确性,还降低了CSI反馈的复杂度。
Description
相关申请的交叉引用
本申请要求于2020年07月14日提交的申请号为202010676874.4发明名称为“CSI反馈方法、装置、电子设备及存储介质”的中国专利申请的优先权,其通过引用方式全部并入本文。
本申请涉及通信技术领域,尤其涉及一种CSI反馈方法、装置、电子设备及存储介质。
CSI(Channel State Information,信道状态信息)的反馈决定了MIMO(Multi Input Multi Output,多输入多输出)传输的性能,因此在整个MIMO设计中具有举足轻重的作用。
目前,LTE(Long Term Evolution,长期演进)系统中在不同的标准化版本(Rel-8~Rel-14)中定义了多种不同的反馈类型以支持不同MIMO传输方案的CSI信道信息反馈,这种设计导致了不同传输方案以及CSI反馈的分散和复杂化。
因此,在5G系统中如何避免CSI反馈的分散和复杂化是当前需要解决的技术问题。
发明内容
本申请实施例提供一种CSI反馈方法、装置、电子设备及存储介质,用以解决现有技术中CSI反馈的分散和复杂化的缺陷,提高CSI反馈的灵活性和准确性。
第一方面,本申请实施例提供一种CSI反馈方法,包括:
确定CSI测量时每组数据层对应的CSI测量资源;
确定CSI测量时每组数据层与DMRS端口之间的第一对应关系;
确定CSI测量时每组数据层与CSI-RS端口之间的映射方式;
确定CSI测量时使用的传输方式和对应的CSI上报方式;
根据所述CSI测量资源、所述第一对应关系、所述映射方式、所述CSI测量时使用的传输方式和对应的CSI上报方式进行CSI反馈。
可选地,根据本申请一个实施例的CSI反馈方法,所述确定CSI测量时每组数据层对应的CSI测量资源,包括:
对用于CSI测量的第一数量个数据层进行分组,得到第二数量个数据层组;
为每个数据层组设置一个CSI测量资源。
可选地,根据本申请一个实施例的CSI反馈方法,所述CSI测量资源包括:
CSI-RS资源;和/或
CSI-RS资源集合;和/或
同一个资源中的不同CSI-RS端口子集。
可选地,根据本申请一个实施例的CSI反馈方法,所述第二数量小于或等于2。
可选地,根据本申请一个实施例的CSI反馈方法,所述确定CSI测量时每组数据层与DMRS端口之间的第一对应关系,包括:
为每个数据层组设置一个DMRS端口组,所述DMRS端口组中的DMRS端口的数量与对应的数据层组中的数据层的数量相同。
可选地,根据本申请一个实施例的CSI反馈方法,所述DMRS端口组中的各个DMRS端口具有QCL关系。
可选地,根据本申请一个实施例的CSI反馈方法,所述为每个数据层组设置一个DMRS端口组,包括:
利用第一公式设置所述DMRS端口组;其中,所述第一公式包括:
可选地,根据本申请一个实施例的CSI反馈方法,所述确定CSI测量时每组数据层与CSI-RS端口之间的映射方式,包括:
将用于CSI测量的第一数量个数据层映射到第三数量个CSI-RS端口上,所述第三数量大于或等于所述第一数量。
可选地,根据本申请一个实施例的CSI反馈方法,所述第一数量个数据层被划分为第二数量个数据层组;
所述将用于CSI测量的第一数量个数据层映射到第三数量个CSI-RS端口上,包括:
若需要上报PMI,则确定每个数据层组对应的预编码矩阵,并根据所述预编码矩阵确定每个数据层组与对应的CSI-RS端口组之间的第一映射关系;
若不需要上报PMI、且网络侧已指示每组数据层与CSI-RS端口之间的第二对应关系,则根据所述第二对应关系,确定每个数据层组与对应的CSI-RS端口组之间的第二映射关系;
若不需要上报PMI、且网络侧未指示所述第二对应关系,则为每个数据层组设置与对应的CSI-RS端口组之间的第三映射关系;
其中,所述CSI-RS端口组中的CSI-RS端口的数量大于或等于 对应的数据层组中的数据层的数量,每个CSI-RS端口组对应一个CSI测量资源。
可选地,根据本申请一个实施例的CSI反馈方法,
所述根据所述预编码矩阵确定每个数据层组与对应的CSI-RS端口组之间的第一映射关系,包括:
利用第二公式确定所述第一映射关系;其中,所述第二公式包括:
W
Group_i代表第i个数据层组对应的预编码矩阵;
所述确定每个数据层组与对应的CSI-RS端口组之间的第二映射关系,包括:
利用第三公式确定所述第二映射关系;其中,所述第三公式包括:
所述为每个数据层组设置与对应的CSI-RS端口组之间的第三映射关系,包括:
利用第四公式确定所述第三映射关系;其中,所述第四公式包括:
可选地,根据本申请一个实施例的CSI反馈方法,所述CSI测量时使用的传输方式包括第一传输方式,所述第一传输方式用于表征只传输一个数据层组;
所述第一传输方式对应的CSI上报方式包括第一CSI上报方式或第二CSI上报方式;
其中,所述第一CSI上报方式包括上报一个数据层组对应的CSI和第一标识信息,所述第一标识信息用于表征待上报的数据层组映射到的CSI-RS端口组;
所述第二CSI上报方式包括上报所有数据层组对应的CSI。
可选地,根据本申请一个实施例的CSI反馈方法,所述CSI测量时使用的传输方式包括第二传输方式,所述第二传输方式用于表征同 时传输所有数据层组;
所述第二传输方式对应的CSI上报方式包括上报所有数据层组对应的CSI。
可选地,根据本申请一个实施例的CSI反馈方法,还包括:
若需要上报PMI,则上报所述待上报的数据层组使用的预编码矩阵,以及所述待上报的数据层组的数据层数量;
若不需要上报PMI,则上报所述待上报的数据层组的数据层数量。
可选地,根据本申请一个实施例的CSI反馈方法,还包括:
上报CQI信息。
第二方面,本申请实施例还提供一种CSI反馈装置,包括:
第一确定模块,用于信道状态信息CSI测量时每组数据层对应的CSI测量资源;
第二确定模块,用于确定CSI测量时每组数据层与解调参考信号DMRS端口之间的第一对应关系;
第三确定模块,用于确定CSI测量时每组数据层与信道状态信息参考信号CSI-RS端口之间的映射方式;
第四确定模块,用于确定CSI测量时使用的传输方式和对应的CSI上报方式;
CSI反馈模块,用于根据所述CSI测量资源、所述第一对应关系、所述映射方式、所述CSI测量时使用的传输方式和对应的CSI上报方式进行CSI反馈。
第三方面,本申请实施例还提供一种电子设备,包括存储器、处理器及存储在存储器上并可在处理器上运行的计算机程序,所述处理器执行所述程序时实现如上述任一种所述CSI反馈方法的步骤。
第四方面,本申请实施例还提供一种非暂态计算机可读存储介质,其上存储有计算机程序,该计算机程序被处理器执行时实现如上述任 一种所述CSI反馈方法的步骤。
本申请实施例提供的CSI反馈方法、装置、电子设备及存储介质,通过确定CSI测量时每组数据层对应的CSI测量资源,确定CSI测量时每组数据层与DMRS端口之间的第一对应关系,确定CSI测量时每组数据层与CSI-RS端口之间的映射方式,确定CSI测量时使用的传输方式和对应的CSI上报方式,根据CSI测量资源、第一对应关系、映射方式、CSI测量时使用的传输方式和对应的CSI上报方式进行CSI反馈,从而提高了CSI反馈的灵活性和准确性,还降低了CSI反馈的复杂度。
为了更清楚地说明本申请实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍,显而易见地,下面描述中的附图是本申请的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的一种CSI反馈方法的流程示意图;
图2是本申请实施例提供的一种CSI反馈装置的结构示意图;
图3是本申请实施例提供的一种电子设备的结构示意图。
图4是本申请另一实施例提供的一种电子设备的结构示意图。
为使本申请实施例的目的、技术方案和优点更加清楚,下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
为了便于清楚描述本申请实施例的技术方案,在本申请的各实施例中,若采用了“第一”、“第二”等字样对功能和作用基本相同的相同项或相似项进行区分,本领域技术人员可以理解“第一”、“第二”等字样并不对数量和执行次序进行限定。
CSI的反馈决定了MIMO传输的性能,因此在整个MIMO设计中具有举足轻重的作用。LTE系统中在不同的标准化版本(Rel-8~Rel-14)中定义了多种不同的反馈类型以支持不同MIMO传输方案的CSI信道信息反馈,这种设计导致了不同传输方案以及CSI反馈的分散和复杂化。
因此,在5G系统中如何避免CSI反馈的分散和复杂化是当前需要解决的技术问题。
在5G系统中为了避免引入多种反馈类型/子反馈类型,考虑设计统一的CSI反馈框架。系统设计通过将CSI测量和CSI反馈方式进行解耦,将测量资源和测量操作与具体上报操作分离,以更加灵活方式支持不同的MIMO传输方式在多种场景和多种频带应用。另外,对于5G系统新出现的波束管理需求,还需要上报波束指示及相应的RSRP(Reference Signal Receiving Power,参考信号接收功率)等信息。
在NR(New Radio,新空口)系统中,CSI可以包括CQI(Channel Quality Indication,信道质量指示)、PMI(Precoding Matrix Indicator,预编码矩阵指示)、CRI(Channel State Information-Reference SignalResource Indicator,信道状态信息参考信号资源指示)、SSBRI(Synchronization Signal/Physical Broadcast CHannel Block Resource Indicator,同步信号/物理广播信道块资源指示)、LI(Layer Indicator,层指示)、RI(Rank Indicator,秩指示)以及L1-RSRP(Layer 1 Reference Signal Received Power,层1参考信号接收功率)。其中,SSBRI、 LI和L1-RSRP是在LTE系统的CSI反馈基础上新增的反馈量。LI用于指示PMI中最强的列,用于PT-RS(Phase Tracking-Reference Signal,相位跟踪参考信号)参考信号映射。SSBRI和L1-RSRP用于波束管理,一个指示波束索引,另一个指示波束强度。
根据上述将CSI测量和CSI反馈解耦的原则,系统将为每个UE(User Equipment,用户设备)配置N≥1个用于上报不同测量结果的上报反馈设置(Reporting Setting),以及M≥1个CSI-RS测量资源设置(Resource Setting)。每个Reporting Setting关联至1个或多个Resource Retting,用于信道和干扰测量与上报,这样可以根据不同终端需求和应用场景,灵活设置不同测量集合与上报组合。
Reporting setting中包含以下参数的配置:CSI反馈参数(report quantity)、码本配置、CSI反馈的时域行为、PMI和CQI的频域颗粒度、以及测量约束配置。其中CSI反馈参数用于指示UE进行波束管理相关的反馈还是CSI获取相关的反馈。
NR中支持周期、半持续和非周期CSI反馈方式。对于周期和半持续CSI反馈,需要在reporting setting中配置其反馈周期和反馈时隙偏移,每个reporting setting可以关联至1个或2个resource setting。对于非周期CSI反馈,反馈时隙偏移由动态信令指示,每个Reporting setting可以关联至1、2或3个Resource setting。
NR中支持宽带或子带反馈。子带CSI上报的子带大小与终端实际使用的带宽BWP(Bandwidth Part,带宽部分)带宽(由于5G系统带宽一般都比较宽,从节电等角度考虑,通常会将整个系统带宽分为不同大小的BWP,每个终端所分配的BWP带宽内进行发送和接收)相关。每种BWP配置带宽下可以包含2种候选的子带大小,可以通过RRC(Radio Resource Control,无线资源控制)进行配置。子带CSI上报时,多个子带可以在频域连续配置,也可以在频域不连续配 置。
NR中的CSI-RS的时域行为可配置为周期CSI-RS、半持续CSI-RS和非周期CSI-RS。
Resource setting用于信道或干扰测量。每个resource setting包含S≥1个resource set(资源集),每个resource set包含Ks≥1个CSI-RS资源。NR支持周期、半持续和非周期的resource setting,其时域行为在resource setting中配置。对于周期和半持续resource setting,只能配置一个resource set,即S=1。非周期的resource setting可以配置一个或多个resource set。为了区别CSI获取和波束管理,还引入了波束重复指示参数repetition,其配置在resource set中用于指示此resource set中的CSI-RS用于波束管理,且是否采用重复波束发送。
Rel-15中引入的MIMO方案都是针对单点传输的。为了改善小区边缘的覆盖,在服务区内提供更为均衡的服务质量,多点协作在NR R16系统中是一种重要的技术手段。考虑到NR系统的部署条件、频段及天线形态,多点协作传输技术在NR系统中的应用具有更显著的现实意义。首先,从网络形态角度考虑,以大量的分布式接入点+基带集中处理的方式进行网络部署将更加有利于提供均衡的用户体验速率,并且显著的降低越区切换带来的时延和信令开销。随着频段的升高,从保证网络覆盖的角度出发,也需要相对密集的接入点部署。而在高频段,随着有源天线设备集成度的提高,将更加倾向于采用模块化的有源天线阵列。每个TRP(Transmission Reception Point,传输接收点)的天线阵可以被分为若干相对独立的天线子阵或panel(天线面板),因此整个阵面的形态和端口数都可以随部署场景与业务需求进行灵活的调整。而panel或TRP之间也可以由光纤连接,进行更为灵活的分布式部署。在毫米波波段,随着波长的减小,人体或车辆等障碍物所产生的阻挡效应将更为显著。这种情况下,从保障链路连 接鲁棒性的角度出发,也可以利用多个TRP或panel之间的协作,从多个角度的多个波束进行传输/接收,从而降低阻挡效应带来的不利影响。
根据发送信号流到多个TRP/panel上的映射关系,多点协作传输技术可以大致分为相干和非相干传输两种。其中,相干传输时,每个数据层会通过加权向量映射到多个TRP/panel之上。而非相干传输时,每个数据流只映射到部分的TRP/panel上。相干传输对于传输点之间的同步以及backhaul的传输能力有着更高的要求,因而对现实部署条件中的很多非理想因素较为敏感。相对而言,非相干传输受上述因素的影响较小,因此是NR多点传输技术的重点考虑方案。
多个TRP/panel进行协作传输的情况下,不同TRP/panel发送的信号可能具有相对独立的大尺度特征,例如平均时延、时延扩展、平均多普勒偏移、多普勒扩展以及空域接收参数等。因此在NR系统中,将两个或多个参考信号信道大尺度参数一致的情况称为QCL(Quasi Co-Location,准共址)。反之,则称其非QCL。NR系统中规定,相同CDM(Code Division Multiplexing,码分多路复用)组中的DMRS(Demodulation Reference Signal,解调参考信号)端口具有QCL关系。
NR系统的DM-RS端口采用FDM(Frequency Division Multiplexing,频分复用)加上CDM(Code Division Multiplexing,码分多路复用)的方式进行复用。在每个CDM组内通过正交码分复用方式即OCC(Orthogonal Cover Code,正交掩码)分为多个端口,CDM组之间通过FDM的方式进行区分。NR支持两种导频类型,通过高层信令配置所使用的导频类型。
根据不同的业务需求与回传链路容量,R16引入了三类多TRP协作传输方案:
1)利用多个PDCCH(Physical Downlink Control Channel,下行控制物理信道)分别调度各自的PDSCH(Physical Downlink Share Channel,下行共享物理信道),简称为M-DCI(Downlink Control Information,下行控制信息)方案。
这种方案中,各TRP可独立调度,因而具有较高的灵活性。同时,各TRP的传输与控制指示相对独立,适用于回传链路质量不理想,无法紧密协调的场景;
2)使用单个PDCCH调度一个PDSCH,其中每个层只通过一个TRP传输,简称为S-DCI方案。
这种方案中,各TRP发送的数据层使用相同的资源分配,在不超过4层的单码字传输中,所有的层都使用相同的MCS。由于各层占用的时频资源完全重叠,S-DCI方案具有更高的频带利用效率。但是,由于各TRP需要共同发送同一个PDSCH,需要TRP之间更为紧密的协作。因而对回传链路的容量要求较高。此外,当各TRP的信道质量存在明显差异时,S-DCI方案可能无法根据各TRP的信道独立调整MCS(Modulation and Coding Scheme,调制与编码策略),也不能独立地进行资源分配;
3)基于多点协作提升传输可靠性/降低时延的传输方案,简称为URLLC增强方案(Ultra-Reliable and Low Latency Communication,高可靠低时延通信)。
URLLC增强方案整体才用了S-DCI的机制,在传输过程中可以利用多TRP的协作在空间域、时域、频域引入冗余度以提升可靠性/降低时延。
需要说明的是,Rel-15中定义的CSI反馈机制主要是针对单点传输以及相干的多点传输,尚不能很好地支持多点非相干传输。
因此,基于多点协作方案中,各TRP独立地进行CSI的测量与 上报。而且,在CSI的计算过程中,无法反映出实际的调度和传输情况。
针对上述问题,本申请实施例提供一种CSI反馈方法、装置、电子设备及存储介质,以提高CSI反馈的灵活性和准确性。
本申请实施例提供的一种CSI反馈方法、装置、电子设备及存储介质,可以应用在无线通信系统或无线与有线结合的系统。包括但不限于5G系统(如NR系统)、6G系统、卫星系统、车联网系统、演进型长期演进系统,上述系统的后续演进通信系统等。
本申请实施例提供的基站可以包含但不限于以下中的一种或多种:通常所用的基站、演进型基站(evolved node base station,eNB)、5G系统中的基站(例如下一代基站(next generation node base station,gNB)、发送和接收点(transmission and reception point,TRP))等设备。
本申请实施例提供的终端又可以被称为用户设备(User Equipment,UE)等。终端包括但不限于手持设备、车载设备。例如,可以为手机、平板电脑、笔记本电脑、超级移动个人计算机(Ultra-Mobile Personal Computer,UMPC)、上网本或者个人数字助理(Personal Digital Assistant,PDA)等。
下面通过具体实施例进行说明。
图1为本申请实施例提供的一种CSI反馈方法的流程图,该CSI反馈方法可以用于能够实现CSI反馈的电子设备,比如:终端;如图1所示,该CSI反馈方法可以包括如下步骤:
S101、确定CSI测量时每组数据层对应的CSI测量资源。
具体地,在多点协作传输时,每组数据层是通过一个TRP发送的,而网络侧预先会通过配置、指示信令将对应于不同TRP的CSI测量资源关联起来,然后通知终端利用这些CSI测量资源进行多点协 作传输的CSI测量。
其中,CSI测量资源可以包括:
CSI-RS资源;和/或
CSI-RS资源集合;和/或
同一个资源中的不同CSI-RS端口子集。
比如:网络侧通过配置、指示信令将对应于不同TRP的CSI-RS资源关联起来,或者将对应于不同TRP的CSI-RS资源集合关联起来,或者将同一个资源中对应于不同TRP的CSI-RS端口子集关联起来,然后通知终端利用对应于不同TRP的CSI-RS资源、或对应于不同TRP的CSI-RS资源集合、或同一个资源中对应于不同TRP的CSI-RS端口子集进行多点协作传输的CSI测量。
S102、确定CSI测量时每组数据层与DMRS端口之间的第一对应关系。
具体地,一个数据层对应一个DMRS端口。
比如:用户在利用CSI-RS进行CSI测量时使用的PDSCH传输了v个数据层,其中每个数据层对应于一个DMRS端口;若同时进行CSI测量的v个数据层可以被分为最多两组(分别对应于一个TRP),则在PDSCH传输时每组数据层与一组DMRS端口相对应。
S103、确定CSI测量时每组数据层与CSI-RS端口之间的映射方式。
具体地,用户在利用CSI-RS进行CSI测量时通过v个DMRS端口发送的v层PDSCH数据被映射到P个CSI-RS端口上。其中,每个CSI-RS端口组对应于一个CSI-RS资源,或者不同的CSI-RS端口组对应于同一个CSI-RS资源中的不同CSI-RS端口子集。
S104、确定CSI测量时使用的传输方式和对应的CSI上报方式。
具体地,用户在利用CSI-RS进行CSI测量时,可以根据实际情 况确定使用的传输方式和对应的CSI上报方式。
S105、根据CSI测量资源、第一对应关系、映射方式、CSI测量时使用的传输方式和对应的CSI上报方式进行CSI反馈。
由上述实施例可见,通过确定CSI测量时每组数据层对应的CSI测量资源,确定CSI测量时每组数据层与DMRS端口之间的第一对应关系,确定CSI测量时每组数据层与CSI-RS端口之间的映射方式,确定CSI测量时使用的传输方式和对应的CSI上报方式,根据CSI测量资源、第一对应关系、映射方式、CSI测量时使用的传输方式和对应的CSI上报方式进行CSI反馈,从而提高了CSI反馈的灵活性和准确性,还降低了CSI反馈的复杂度。
进一步地,建立在上述方法的基础上,在执行101时,可以包括:
S1011、对用于CSI测量的第一数量个数据层进行分组,得到第二数量个数据层组;
具体地,由于每组数据层是通过一个TRP发送的,可以根据TRP的数据对数据层进行分组,得到的每组数据层对应一个TRP。
其中,第二数量可以小于或等于2。
比如:用户在利用CSI-RS进行CSI测量时使用的PDSCH传输了v个数据层,并将该v个数据层分为两组:
S1012、为每个数据层组设置一个CSI测量资源。
具体地,CSI测量资源可以包括:
CSI-RS资源;和/或
CSI-RS资源集合;和/或
比如:为每个数据层组设置一个CSI-RS资源,或者同一个 CSI-RS资源中的不同CSI-RS端口子集。
由上述实施例可见,通过对用于CSI测量的第一数量个数据层进行分组,得到第二数量个数据层组,并为每个数据层组设置一个CSI测量资源,从而实现了基于数据层组的CSI测量资源配置,满足了不同终端需求和应用场景,提高了CSI反馈的灵活性。
进一步地,建立在上述方法的基础上,在执行102时,可以包括:
S1021、为每个数据层组设置一个DMRS端口组,所述DMRS端口组中的DMRS端口的数量与对应的数据层组中的数据层的数量相同。
具体地,数据层组的总数量和DMRS端口组的总数量相同。
进一步地,建立在上述方法的基础上,在执行1021时,可以利用第一公式设置所述DMRS端口组;其中,所述第一公式包括:
比如:用户在利用CSI-RS进行CSI测量时使用的PDSCH传输了v个数据层,并将该v个数据层分为两组:
数据层组1和DMRS端口组1的对应关系如下:
数据层组2和DMRS端口组2的对应关系如下:
另外,上述DMRS端口组中的各个DMRS端口具有QCL关系。
具体地,可以对DMRS端口按照QCL关系进行分组,即每个DMRS端口组的端口均出自同一个DMRS CDM组(两个DMRS端口组中的端口数之和等于v)。
比如:DMRS端口组1为CDM组0,DMRS端口组2为CDM组1。
由上述实施例可见,通过为每个数据层组设置一个DMRS端口组,DMRS端口组中的DMRS端口的数量与对应的数据层组中的数据层的数量相同,从而实现了基于数据层组的DMRS端口配置,即一个数据层对应一个DMRS端口。
进一步地,建立在上述方法的基础上,在执行103时,可以包括:
S1031、将用于CSI测量的第一数量个数据层映射到第三数量个CSI-RS端口上,所述第三数量大于或等于所述第一数量。
具体地,用户在利用CSI-RS进行CSI测量时通过v个DMRS端 口发送的v层PDSCH数据被映射到P个CSI-RS端口上。其中,每个CSI-RS端口组对应于一个CSI-RS资源,或者不同的CSI-RS端口组对应于同一个CSI-RS资源中的不同CSI-RS端口子集。
进一步地,建立在上述方法的基础上,所述第一数量个数据层被划分为第二数量个数据层组;在执行1031时,可以包括:
S1032、若需要上报PMI,则确定每个数据层组对应的预编码矩阵,并根据所述预编码矩阵确定每个数据层组与对应的CSI-RS端口组之间的第一映射关系;
S1033、若不需要上报PMI、且网络侧已指示每组数据层与CSI-RS端口之间的第二对应关系,则根据所述第二对应关系,确定每个数据层组与对应的CSI-RS端口组之间的第二映射关系;
S1034、若不需要上报PMI、且网络侧未指示所述第二对应关系,则为每个数据层组设置与对应的CSI-RS端口组之间的第三映射关系;
其中,所述CSI-RS端口组中的CSI-RS端口的数量大于或等于对应的数据层组中的数据层的数量,每个CSI-RS端口组对应一个CSI测量资源。
进一步地,建立在上述方法的基础上,在执行1032时,可以利用第二公式确定所述第一映射关系;其中,所述第二公式包括:
W
Group_i代表第i个数据层组对应的预编码矩阵;
比如:用户在利用CSI-RS进行CSI测量时使用的PDSCH传输了v个数据层,并将该v个数据层分为两组:
数据层组1和CSI-RS端口组1的第一映射关系如下:
即,对应于第1组DMRS端口的N1个数据层按照以下方式映射到CSI-RS端口组1所包含的M1个CSI-RS端口上。其中,M1大于或等于N1。
数据层组2和CSI-RS端口组2的第一映射关系如下:
即,对应于第2组DMRS端口的N2个数据层按照以下方式映射到CSI-RS端口组2所包含的M2个CSI-RS端口上。其中,M2大于或等于N2。
在执行1033时,可以利用第三公式确定所述第二映射关系;其中,所述第三公式包括:
具体地,如果网络侧进一步指示了CSI测量和计算时使用的每组数据层与CSI-RS端口之间的第二对应关系。
比如:网络在不需要PMI上报(non-PMI-PortIndication)中指示了:
则:数据层组1和CSI-RS端口组1的第二映射关系如下:
即,对应于第1组DMRS端口的N1个数据层按照以下方式映射到CSI-RS端口组1所包含的N1个CSI-RS端口上。
数据层组2和CSI-RS端口组2的第二映射关系如下:
即,对应于第2组DMRS端口的N2个数据层按照以下方式映射到CSI-RS端口组2所包含的N2个CSI-RS端口上。
在执行1034时,可以利用利用第四公式确定所述第三映射关系;其中,所述第四公式包括:
具体地,如果网络侧没有指示CSI测量和计算时使用的每组数据层与CSI-RS端口之间的第二对应关系。
比如:上报量(reportQuantity)被配置为要求上报CRI、RI和CQI(即cri-RI-CQI上报),但是没有配置不需要PMI上报(non-PMI-PortIndication)。
则:数据层组1和CSI-RS端口组1的第三映射关系如下:
即,对应于第1组DMRS端口的N1个数据层按照以下方式映射到CSI-RS端口组1所包含的N1个CSI-RS端口上。
数据层组2和CSI-RS端口组2的第三映射关系如下:
即,对应于第2组DMRS端口的N2个数据层按照以下方式映射到CSI-RS端口组2所包含的N2个CSI-RS端口上。
由上述实施例可见,在将用于CSI测量的第一数量个数据层映射到第三数量个CSI-RS端口上时,若所述第一数量个数据层被划分为第二数量个数据层组;在需要上报PMI时,可以根据预编码矩阵确定每个数据层组与对应的CSI-RS端口组之间的第一映射关系;在不需要上报PMI、且网络侧已指示每组数据层与CSI-RS端口之间的第二对应关系时,可以根据所述第二对应关系,确定每个数据层组与对应的CSI-RS端口组之间的第二映射关系;若不需要上报PMI、且网络侧未指示所述第二对应关系,则可以为每个数据层组设置与对应的CSI-RS端口组之间的第三映射关系,其中,所述CSI-RS端口组中的CSI-RS端口的数量大于或等于对应的数据层组中的数据层的数量,每个CSI-RS端口组对应一个CSI测量资源,从而实现了基于数据层组的CSI-RS端口配置。
进一步地,建立在上述方法的基础上,上述S104中的CSI测量 时使用的传输方式可以包括第一传输方式,所述第一传输方式用于表征只传输一个数据层组;
所述第一传输方式对应的CSI上报方式包括第一CSI上报方式或第二CSI上报方式;
其中,所述第一CSI上报方式包括上报一个数据层组对应的CSI和第一标识信息,所述第一标识信息用于表征待上报的数据层组映射到的CSI-RS端口组;
所述第二CSI上报方式包括上报所有数据层组对应的CSI。
具体地,第一传输方式为DPS(Dynamic Point Selection,动态传输点选择)传输方式。
比如:若只有两个数据层组,分别是数据层组1和数据层组2。第一传输方式代表只传输数据层组1,也可以只传输数据层组2。如前所述,这两组数据层分别对应于CSI-RS组1与CSI-RS组2。
需要上报PMI的情况,终端收到的对应于某个数据层组的信号为:
或,
不需要上报PMI的情况(例如,reportQuantity被配置为cri-RI-CQI上报):
如果网络侧进一步指示了CSI测量和计算时使用的数据层与CSI-RS端口的第二对应关系,则终端收到的对应于某个数据层组的信号为:
或,
如果网络没有指示CSI测量和计算时使用的每组数据层与CSI-RS端口的第二对应关系,则终端收到的对应于某个数据层组的信号为:
或,
其中H
CSI-RSGroup1为通过CSI-RS组1测量得到的信道矩阵,而H
CSI-RSGroup2为通过CSI-RS组2测量得到的信道矩阵。
另外,上述第一CSI上报方式可以只上报数据层组1对应的CSI,也可以只上报数据层组2对应的CSI。
其中,对于需要PMI上报的情况,还需上报针对数据层组1或2使用的预编码矩阵,并上报数据层组1或2包含的数据层数量;
对于不需要PMI上报的情况,需要上报针对数据层组1或2包含的数据层数量;
此外还需上报CQI等信息
上述第二CSI上报方式可以上报数据层组1和数据层组2对应的 CSI。
其中,对于需要PMI上报的情况,可以上报针对数据层组1和2使用的预编码矩阵,并上报数据层组1和2包含的数据层数量;
对于不需要PMI上报的情况,可以上报针对数据层组1和2包含的数据层数量;
此外还可以上报CQI,并可能还需要上报CRI等信息。
进一步地,建立在上述方法的基础上,上述S104中的CSI测量时使用的传输方式可以包括第二传输方式,所述第二传输方式用于表征同时传输所有数据层组;
所述第二传输方式对应的CSI上报方式包括上报所有数据层组对应的CSI。
具体地,第二传输方式为NCJT(Non-Coherent Joint Transmission,非相干协作传输)传输方式。
比如:若只有两个数据层组,分别是数据层组1和数据层组2。第二传输方式代表同时传输数据层组1和数据层组2。终端收到的对应于两个数据层组的信号为:
对于需要PMI上报的情况
对于不需要上报PMI的情况(例如,reportQuantity被配置为cri-RI-CQI上报):
如果网络侧进一步指示了CSI测量和计算时使用的数据层与CSI-RS端口的第二对应关系,则终端收到的对应于两个数据层组的信号为:
如果网络没有指示CSI测量和计算时使用的每组数据层与CSI-RS端口的第二对应关系,则终端收到的对应于两个数据层组的信号为:
其中H
CSI-RSGroup1为通过CSI-RS组1测量得到的信道矩阵,而H
CSI-RSGroup2为通过CSI-RS组2测量得到的信道矩阵
另外,所述第二传输方式对应的CSI上报方式:
对于需要PMI上报的情况,终端可以上报针对数据层组1和数据层组2使用的预编码矩阵,并上报数据层组1和数据层组2包含的数据层数量;
对于不需要PMI上报的情况,可以上报针对数据层组1和2包含的数据层数量
此外,还可以上报CQI等信息,并还可能需要上报CRI等信息。
进一步地,建立在上述方法的基础上,上述S104中的CSI上报方式还包括:
若需要上报PMI,则上报所述待上报的数据层组使用的预编码矩阵,以及所述待上报的数据层组的数据层数量;
若不需要上报PMI,则上报所述待上报的数据层组的数据层数量。
进一步地,建立在上述方法的基础上,上述S104中的CSI上报方式还包括:
上报CQI信息。
由上述实施例可见,CSI测量时使用的传输方式可以包括第一传输方式,所述第一传输方式用于表征只传输一个数据层组;也可以包括:第二传输方式,所述第二传输方式用于表征同时传输所有数据层组;并且,第一传输方式对应的CSI上报方式包括第一CSI上报方式或第二CSI上报方式,第一CSI上报方式包括上报一个数据层组对应的CSI和第一标识信息,第二CSI上报方式包括上报所有数据层组对应的CSI,第二传输方式对应的CSI上报方式包括上报所有数据层组对应的CSI,从而实现了基于数据层组的传输方式和上报方式的配置,满足了不同终端需求和应用场景,提高了CSI反馈的灵活性。
图2为本申请实施例提供的一种CSI反馈装置的模块框图,该CSI反馈装置可以用于能够实现CSI反馈的电子设备,比如:终端;如图2所示,该CSI反馈装置可以包括:
第一确定模块21,用于信道状态信息CSI测量时每组数据层对应的CSI测量资源;
第二确定模块22,用于确定CSI测量时每组数据层与解调参考信号DMRS端口之间的第一对应关系;
第三确定模块23,用于确定CSI测量时每组数据层与信道状态信息参考信号CSI-RS端口之间的映射方式;
第四确定模块24,用于确定CSI测量时使用的传输方式和对应的CSI上报方式;
CSI反馈模块25,用于根据所述CSI测量资源、所述第一对应关系、所述映射方式、所述CSI测量时使用的传输方式和对应的CSI上报方式进行CSI反馈。
进一步地,建立在上述装置的基础上,所述第一确定模块21可以包括:
分组子模块,用于对用于CSI测量的第一数量个数据层进行分组, 得到第二数量个数据层组;
CSI测量资源设置子模块,用于为每个数据层组设置一个CSI测量资源。
进一步地,建立在上述装置的基础上,所述CSI测量资源包括:
CSI-RS资源;和/或
CSI-RS资源集合;和/或
同一个资源中的不同CSI-RS端口子集。
进一步地,建立在上述装置的基础上,所述第二数量小于或等于2。
进一步地,建立在上述装置的基础上,所述第二确定模块22可以包括:
DMRS端口组设置子模块,用于为每个数据层组设置一个DMRS端口组,所述DMRS端口组中的DMRS端口的数量与对应的数据层组中的数据层的数量相同。
进一步地,建立在上述装置的基础上,所述DMRS端口组中的各个DMRS端口具有QCL关系。
进一步地,建立在上述装置的基础上,所述DMRS端口组设置子模块具体用于:
利用第一公式设置所述DMRS端口组;其中,所述第一公式包括:
进一步地,建立在上述装置的基础上,所述第三确定模块23可以包括:
映射子模块,用于将用于CSI测量的第一数量个数据层映射到第三数量个CSI-RS端口上,所述第三数量大于或等于所述第一数量。
进一步地,建立在上述装置的基础上,所述第一数量个数据层被划分为第二数量个数据层组;所述映射子模块包括:
第一确定单元,用于若需要上报预编码矩阵指示PMI,则确定每个数据层组对应的预编码矩阵,并根据所述预编码矩阵确定每个数据层组与对应的CSI-RS端口组之间的第一映射关系;
第二确定单元,用于若不需要上报PMI、且网络侧已指示每组数据层与CSI-RS端口之间的第二对应关系,则根据所述第二对应关系,确定每个数据层组与对应的CSI-RS端口组之间的第二映射关系;
第三确定单元,用于若不需要上报PMI、且网络侧未指示所述第二对应关系,则为每个数据层组设置与对应的CSI-RS端口组之间的第三映射关系;
其中,所述CSI-RS端口组中的CSI-RS端口的数量大于或等于对应的数据层组中的数据层的数量,每个CSI-RS端口组对应一个CSI测量资源。
进一步地,建立在上述装置的基础上,所述第一确定单元具体用于:
利用第二公式确定所述第一映射关系;其中,所述第二公式包括:
W
Group_i代表第i个数据层组对应的预编码矩阵;
所述第二确定单元具体用于:
利用第三公式确定所述第二映射关系;其中,所述第三公式包括:
所述第三确定单元具体用于:
利用第四公式确定所述第三映射关系;其中,所述第四公式包括:
进一步地,建立在上述装置的基础上,所述CSI测量时使用的传输方式包括第一传输方式,所述第一传输方式用于表征只传输一个数据层组;
所述第一传输方式对应的CSI上报方式包括第一CSI上报方式或第二CSI上报方式;
其中,所述第一CSI上报方式包括上报一个数据层组对应的CSI和第一标识信息,所述第一标识信息用于表征待上报的数据层组映射到的CSI-RS端口组;
所述第二CSI上报方式包括上报所有数据层组对应的CSI。
进一步地,建立在上述装置的基础上,所述CSI测量时使用的传输方式包括第二传输方式,所述第二传输方式用于表征同时传输所有数据层组;
所述第二传输方式对应的CSI上报方式包括上报所有数据层组对应的CSI。
进一步地,建立在上述装置的基础上,CSI反馈模块25还用于:
若需要上报PMI,则上报所述待上报的数据层组使用的预编码矩阵,以及所述待上报的数据层组的数据层数量;
若不需要上报PMI,则上报所述待上报的数据层组的数据层数量。
进一步地,建立在上述装置的基础上,CSI反馈模块25还用于:
上报CQI信息。
由上述实施例可见,通过确定CSI测量时每组数据层对应的CSI测量资源,确定CSI测量时每组数据层与DMRS端口之间的第一对应关系,确定CSI测量时每组数据层与CSI-RS端口之间的映射方式,确定CSI测量时使用的传输方式和对应的CSI上报方式,根据CSI测量资源、第一对应关系、映射方式、CSI测量时使用的传输方式和对应的CSI上报方式进行CSI反馈,从而提高了CSI反馈的灵活性和准确性,还降低了CSI反馈的复杂度。
图3为本申请一实施例提供的电子设备的结构示意图,比如:该电子设备可以为终端;如图3所示,该电子设备300可以包括:至少一个处理器301、存储器302、至少一个网络接口304和其他的用户接口303。电子设备300中的各个组件通过总线系统305耦合在一起。可理解,总线系统305用于实现这些组件之间的连接通信。总线系统305除包括数据总线之外,还包括电源总线、控制总线和状态信号总线。但是为了清楚说明起见,在图3中将各种总线都标为总线系统305。
其中,用户接口303可以包括显示器、键盘或者点击设备,例如鼠标,轨迹球(trackball)、触感板或者触摸屏等。
可以理解,本申请实施例中的存储器302可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(Read-Only Memory,ROM)、可编程只读存储器(Programmable ROM,PROM)、可擦除可编程只读存储器(Erasable PROM,EPROM)、电可擦除可编程只读存储器(Electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器 (Random Access Memory,RAM),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的RAM可用,例如静态随机存取存储器(Static RAM,SRAM)、动态随机存取存储器(Dynamic RAM,DRAM)、同步动态随机存取存储器(Synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM,DDRSDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM,SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM,DRRAM)。本申请各实施例所描述的系统和方法的存储器302旨在包括但不限于这些和任意其它适合类型的存储器。
在一些实施方式中,存储器302存储了如下的元素,可执行模块或者数据结构,或者他们的子集,或者他们的扩展集,例如:操作系统3021和应用程序3022。
其中,操作系统3021,包含各种系统程序,例如框架层、核心库层、驱动层等,用于实现各种基础业务以及处理基于硬件的任务。应用程序3022,包含各种应用程序,例如媒体播放器(Media Player)、浏览器(Browser)等,用于实现各种应用业务。实现本申请实施例方法的程序可以包含在应用程序3022中。
在本申请实施例中,通过调用存储器302存储的计算机程序或指令,具体的,可以是应用程序3022中存储的计算机程序或指令,处理器301用于:
确定CSI测量时每组数据层对应的CSI测量资源;
确定CSI测量时每组数据层与DMRS端口之间的第一对应关系;
确定CSI测量时每组数据层与CSI-RS端口之间的映射方式;
确定CSI测量时使用的传输方式和对应的CSI上报方式;
根据所述CSI测量资源、所述第一对应关系、所述映射方式、所 述CSI测量时使用的传输方式和对应的CSI上报方式进行CSI反馈。
上述本申请实施例揭示的方法可以应用于处理器301中,或者由处理器301实现。处理器301可能是一种集成电路芯片,具有信号的处理能力。在实现过程中,上述方法的各步骤可以通过处理器301中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器301可以是通用处理器、数字信号处理器(Digital Signal Processor,DSP)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现成可编程门阵列(Field Programmable Gate Array,FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成,或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器302,处理器301读取存储器302中的信息,结合其硬件完成上述方法的步骤。
可以理解的是,本申请描述的这些实施例可以用硬件、软件、固件、中间件、微码或其组合来实现。对于硬件实现,处理单元可以实现在一个或多个专用集成电路(Application Specific Integrated Circuits,ASIC)、数字信号处理器(Digital Signal Processing,DSP)、数字信号处理设备(DSP Device,DSPD)、可编程逻辑设备(Programmable Logic Device,PLD)、现场可编程门阵列(Field-Programmable Gate Array,FPGA)、通用处理器、控制器、微控制器、微处理器、用于执行本申请所述功能的其它电子单元或其组合中。
对于软件实现,可通过执行本申请实施例中所述功能的模块(例 如过程、函数等)来实现所述的技术。软件代码可存储在存储器中并通过处理器执行。存储器可以在处理器中或在处理器外部实现。
可选地,作为另一个实施例,处理器301还用于:
所述确定CSI测量时每组数据层对应的信道状态信息CSI测量资源,包括:
对用于CSI测量的第一数量个数据层进行分组,得到第二数量个数据层组;
为每个数据层组设置一个CSI测量资源。
可选地,作为另一个实施例,处理器301还用于:
所述CSI测量资源包括:
CSI-RS资源;和/或
CSI-RS资源集合;和/或
同一个资源中的不同CSI-RS端口子集。
可选地,作为另一个实施例,处理器301还用于:
所述第二数量小于或等于2。
可选地,作为另一个实施例,处理器301还用于:
所述确定CSI测量时每组数据层与DMRS端口之间的第一对应关系,包括:
为每个数据层组设置一个DMRS端口组,所述DMRS端口组中的DMRS端口的数量与对应的数据层组中的数据层的数量相同。
可选地,作为另一个实施例,处理器301还用于:
所述DMRS端口组中的各个DMRS端口具有QCL关系。
可选地,作为另一个实施例,处理器301还用于:
所述为每个数据层组设置一个DMRS端口组,包括:
利用第一公式设置所述DMRS端口组;其中,所述第一公式包括:
可选地,作为另一个实施例,处理器301还用于:
所述确定CSI测量时每组数据层与CSI-RS端口之间的映射方式,包括:
将用于CSI测量的第一数量个数据层映射到第三数量个CSI-RS端口上,所述第三数量大于或等于所述第一数量。
可选地,作为另一个实施例,处理器301还用于:
所述第一数量个数据层被划分为第二数量个数据层组;
所述将用于CSI测量的第一数量个数据层映射到第三数量个CSI-RS端口上,包括:
若需要上报预编码矩阵指示PMI,则确定每个数据层组对应的预编码矩阵,并根据所述预编码矩阵确定每个数据层组与对应的CSI-RS端口组之间的第一映射关系;
若不需要上报PMI、且网络侧已指示每组数据层与CSI-RS端口之间的第二对应关系,则根据所述第二对应关系,确定每个数据层组与对应的CSI-RS端口组之间的第二映射关系;
若不需要上报PMI、且网络侧未指示所述第二对应关系,则为每个数据层组设置与对应的CSI-RS端口组之间的第三映射关系;
其中,所述CSI-RS端口组中的CSI-RS端口的数量大于或等于对应的数据层组中的数据层的数量,每个CSI-RS端口组对应一个CSI测量资源。
可选地,作为另一个实施例,处理器301还用于:
所述根据所述预编码矩阵确定每个数据层组与对应的CSI-RS端口组之间的第一映射关系,包括:
利用第二公式确定所述第一映射关系;其中,所述第二公式包括:
W
Group_i代表第i个数据层组对应的预编码矩阵;
所述确定每个数据层组与对应的CSI-RS端口组之间的第二映射关系,包括:
利用第三公式确定所述第二映射关系;其中,所述第三公式包括:
所述为每个数据层组设置与对应的CSI-RS端口组之间的第三映射关系,包括:
利用第四公式确定所述第三映射关系;其中,所述第四公式包括:
可选地,作为另一个实施例,处理器301还用于:
所述CSI测量时使用的传输方式包括第一传输方式,所述第一传输方式用于表征只传输一个数据层组;
所述第一传输方式对应的CSI上报方式包括第一CSI上报方式或第二CSI上报方式;
其中,所述第一CSI上报方式包括上报一个数据层组对应的CSI和第一标识信息,所述第一标识信息用于表征待上报的数据层组映射到的CSI-RS端口组;
所述第二CSI上报方式包括上报所有数据层组对应的CSI。
可选地,作为另一个实施例,处理器301还用于:
所述CSI测量时使用的传输方式包括第二传输方式,所述第二传输方式用于表征同时传输所有数据层组;
所述第二传输方式对应的CSI上报方式包括上报所有数据层组对应的CSI。
可选地,作为另一个实施例,处理器301还用于:
若需要上报PMI,则上报所述待上报的数据层组使用的预编码矩阵,以及所述待上报的数据层组的数据层数量;
若不需要上报PMI,则上报所述待上报的数据层组的数据层数量。
可选地,作为另一个实施例,处理器301还用于:
上报CQI信息。
本申请实施例提供的电子设备能够实现前述实施例中电子设备实现的各个过程,为避免重复,此处不再赘述。
由上述实施例可见,通过确定CSI测量时每组数据层对应的CSI测量资源,确定CSI测量时每组数据层与DMRS端口之间的第一对应关系,确定CSI测量时每组数据层与CSI-RS端口之间的映射方式,确定CSI测量时使用的传输方式和对应的CSI上报方式,根据CSI测量资源、第一对应关系、映射方式、CSI测量时使用的传输方式和对应的CSI上报方式进行CSI反馈,从而提高了CSI反馈的灵活性和准确性,还降低了CSI反馈的复杂度。
图4为本申请另一实施例提供的电子设备的结构示意图,比如:该电子设备可以为终端;图4中的电子设备可以为手机、平板电脑、个人数字助理(Personal Digital Assistant,PDA)、或、电子阅读器、手持游戏机、销售终端(Point of Sales,POS)、车载电子设备(车载电脑)等。如图4所示,该电子设备包括射频(Radio Frequency,RF)电路410、存储器420、输入单元430、显示单元440、处理器460、音频电路470、WiFi(Wireless-Fidelity)模块480和电源490。本领域技 术人员可以理解,图4中示出的手机结构并不构成对手机的限定,可以包括比图示更多或更少的部件,或者组合某些部件,或者拆分某些部件,或者不同的部件布置。
其中,输入单元430可用于接收用户输入的数字或字符信息,以及产生与电子设备的用户设置以及功能控制有关的信号输入。具体地,本申请实施例中,该输入单元430可以包括触控面板4301。触控面板4301,也称为触摸屏,可收集用户在其上或附近的触摸操作(比如用户使用手指、触笔等任何适合的物体或附件在触控面板4301上的操作),并根据预先设定的程式驱动相应的连接装置。可选的,触控面板4301可包括触摸检测装置和触摸控制器两个部分。其中,触摸检测装置检测用户的触摸方位,并检测触摸操作带来的信号,将信号传送给触摸控制器;触摸控制器从触摸检测装置上接收触摸信息,并将它转换成触点坐标,再送给该处理器460,并能接收处理器460发来的命令并加以执行。此外,可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触控面板4301。除了触控面板4301,输入单元430还可以包括其他输入设备4302,其他输入设备4302可用于接收输入的数字或字符信息,以及产生与电子设备的用户设置以及功能控制有关的键信号输入。具体地,其他输入设备4302可包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆、光鼠(光鼠是不显示可视输出的触摸敏感表面,或者是由触摸屏形成的触摸敏感表面的延伸)等中的一种或多种。
其中,显示单元440可用于显示由用户输入的信息或提供给用户的信息以及电子设备的各种菜单界面。显示单元440可包括显示面板4401。其中显示面板4401可以采用液晶显示器(Liquid Crystal Display,LCD)、有机发光二极管(OrganicLight-Emitting Diode,OLED)等形式来配置显示面板4401。
应注意,触控面板4301可以覆盖显示面板4401,形成触摸显示屏,当该触摸显示屏检测到在其上或附近的触摸操作后,传送给处理器460以确定触摸事件的类型,随后处理器460根据触摸事件的类型在触摸显示屏上提供相应的视觉输出。
触摸显示屏包括应用程序界面显示区及常用控件显示区。该应用程序界面显示区及该常用控件显示区的排列方式并不限定,可以为上下排列、左右排列等可以区分两个显示区的排列方式。该应用程序界面显示区可以用于显示应用程序的界面。每一个界面可以包含至少一个应用程序的图标和/或widget桌面控件等界面元素。该应用程序界面显示区也可以为不包含任何内容的空界面。该常用控件显示区用于显示使用率较高的控件,例如,设置按钮、界面编号、滚动条、电话本图标等应用程序图标等。
RF电路410可用于收发信息或通话过程中,信号的接收和发送,特别地,将网络侧的下行信息接收后,给处理器460处理;另外,将设计上行的数据发送给网络侧。通常,RF电路410包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器(Low Noise Amplifier,LNA)、双工器等。此外,RF电路410还可以通过无线通信与网络和其他设备通信。所述无线通信可以使用任一通信标准或协议,包括但不限于全球移动通讯系统(Global System of Mobilecommunication,GSM)、通用分组无线服务(General Packet Radio Service,GPRS)、码分多址(Code Division Multiple Access,CDMA)、宽带码分多址(Wideband CodeDivision Multiple Access,WCDMA)、长期演进(Long Term Evolution,LTE)、电子邮件、短消息服务(Short Messaging Service,SMS)等。
存储器420用于存储软件程序以及模块,处理器460通过运行存储在存储器420的软件程序以及模块,从而执行电子设备的各种功能 应用以及数据处理。存储器420可主要包括存储程序区和存储数据区,其中,存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图像播放功能等)等;存储数据区可存储根据电子设备的使用所创建的数据(比如音频数据、电话本等)等。此外,存储器420可以包括高速随机存取存储器,还可以包括非易失性存储器,例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
其中处理器460是电子设备的控制中心,利用各种接口和线路连接整个手机的各个部分,通过运行或执行存储在第一存储器4201内的软件程序和/或模块,以及调用存储在第二存储器4202内的数据,执行电子设备的各种功能和处理数据,从而对电子设备进行整体监控。可选的,处理器460可包括一个或多个处理单元。
在本申请实施例中,通过调用存储该第一存储器4201内的软件程序和/或模块和/或该第二存储器4202内的数据,处理器460用于
确定CSI测量时每组数据层对应的CSI测量资源;
确定CSI测量时每组数据层与DMRS端口之间的第一对应关系;
确定CSI测量时每组数据层与CSI-RS端口之间的映射方式;
确定CSI测量时使用的传输方式和对应的CSI上报方式;
根据所述CSI测量资源、所述第一对应关系、所述映射方式、所述CSI测量时使用的传输方式和对应的CSI上报方式进行CSI反馈。
可选地,作为另一个实施例,处理器460还用于:
所述确定CSI测量时每组数据层对应的信道状态信息CSI测量资源,包括:
对用于CSI测量的第一数量个数据层进行分组,得到第二数量个数据层组;
为每个数据层组设置一个CSI测量资源。
可选地,作为另一个实施例,处理器460还用于:
所述CSI测量资源包括:
CSI-RS资源;和/或
CSI-RS资源集合;和/或
同一个资源中的不同CSI-RS端口子集。
可选地,作为另一个实施例,处理器460还用于:
所述第二数量小于或等于2。
可选地,作为另一个实施例,处理器460还用于:
所述确定CSI测量时每组数据层与DMRS端口之间的第一对应关系,包括:
为每个数据层组设置一个DMRS端口组,所述DMRS端口组中的DMRS端口的数量与对应的数据层组中的数据层的数量相同。
可选地,作为另一个实施例,处理器460还用于:
所述DMRS端口组中的各个DMRS端口具有QCL关系。
可选地,作为另一个实施例,处理器460还用于:
所述为每个数据层组设置一个DMRS端口组,包括:
利用第一公式设置所述DMRS端口组;其中,所述第一公式包括:
可选地,作为另一个实施例,处理器460还用于:
所述确定CSI测量时每组数据层与CSI-RS端口之间的映射方式,包括:
将用于CSI测量的第一数量个数据层映射到第三数量个CSI-RS端口上,所述第三数量大于或等于所述第一数量。
可选地,作为另一个实施例,处理器460还用于:
所述第一数量个数据层被划分为第二数量个数据层组;
所述将用于CSI测量的第一数量个数据层映射到第三数量个CSI-RS端口上,包括:
若需要上报预编码矩阵指示PMI,则确定每个数据层组对应的预编码矩阵,并根据所述预编码矩阵确定每个数据层组与对应的CSI-RS端口组之间的第一映射关系;
若不需要上报PMI、且网络侧已指示每组数据层与CSI-RS端口之间的第二对应关系,则根据所述第二对应关系,确定每个数据层组与对应的CSI-RS端口组之间的第二映射关系;
若不需要上报PMI、且网络侧未指示所述第二对应关系,则为每个数据层组设置与对应的CSI-RS端口组之间的第三映射关系;
其中,所述CSI-RS端口组中的CSI-RS端口的数量大于或等于对应的数据层组中的数据层的数量,每个CSI-RS端口组对应一个CSI测量资源。
可选地,作为另一个实施例,处理器460还用于:
所述根据所述预编码矩阵确定每个数据层组与对应的CSI-RS端口组之间的第一映射关系,包括:
利用第二公式确定所述第一映射关系;其中,所述第二公式包括:
W
Group_i代表第i个数据层组对应的预编码矩阵;
所述确定每个数据层组与对应的CSI-RS端口组之间的第二映射关系,包括:
利用第三公式确定所述第二映射关系;其中,所述第三公式包括:
所述为每个数据层组设置与对应的CSI-RS端口组之间的第三映射关系,包括:
利用第四公式确定所述第三映射关系;其中,所述第四公式包括:
可选地,作为另一个实施例,处理器460还用于:
所述CSI测量时使用的传输方式包括第一传输方式,所述第一传输方式用于表征只传输一个数据层组;
所述第一传输方式对应的CSI上报方式包括第一CSI上报方式或第二CSI上报方式;
其中,所述第一CSI上报方式包括上报一个数据层组对应的CSI和第一标识信息,所述第一标识信息用于表征待上报的数据层组映射到的CSI-RS端口组;
所述第二CSI上报方式包括上报所有数据层组对应的CSI。
可选地,作为另一个实施例,处理器460还用于:
所述CSI测量时使用的传输方式包括第二传输方式,所述第二传输方式用于表征同时传输所有数据层组;
所述第二传输方式对应的CSI上报方式包括上报所有数据层组对应的CSI。
可选地,作为另一个实施例,处理器460还用于:
若需要上报PMI,则上报所述待上报的数据层组使用的预编码矩阵,以及所述待上报的数据层组的数据层数量;
若不需要上报PMI,则上报所述待上报的数据层组的数据层数量。
可选地,作为另一个实施例,处理器460还用于:
上报CQI信息。
本申请实施例提供的电子设备能够实现前述实施例中电子设备实现的各个过程,为避免重复,此处不再赘述。
由上述实施例可见,通过确定CSI测量时每组数据层对应的CSI测量资源,确定CSI测量时每组数据层与DMRS端口之间的第一对应关系,确定CSI测量时每组数据层与CSI-RS端口之间的映射方式,确定CSI测量时使用的传输方式和对应的CSI上报方式,根据CSI测量资源、第一对应关系、映射方式、CSI测量时使用的传输方式和对应的CSI上报方式进行CSI反馈,从而提高了CSI反馈的灵活性和准确性,还降低了CSI反馈的复杂度。
上述主要从电子设备的角度对本申请实施例提供的方案进行了介绍。可以理解的是,本申请实施例提供的电子设备为了实现上述功能,其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到,结合本申请中所公开的实施例描述的各示例的单元及算法步骤,本申请能够以硬件或硬件和计算机软件的结合形式来实现。
某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对电子设备等进行功能模块的划分,例如,可以对应各个功能划分各个功能模块,也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现,也可以采用软件功能模块的形式实现。
需要说明的是,本申请实施例中对模块的划分是示意性的,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁, 仅以上述各功能模块的划分进行举例说明,实际应用中,可以根据需要而将上述功能分配由不同的功能模块完成,即将装置的内部结构划分成不同的功能模块,以完成以上描述的全部或者部分功能。上述描述的系统,装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述模块或单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。上述集成的单元可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,该技术方案的全部或部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)或处理器执行本申请各个实施例所述方法的全部或部分步骤。所述计算机存储介质是非短暂性(英文:nontransitory)介质,包括:快闪存储器、 移动硬盘、只读存储器、随机存取存储器、磁碟或者光盘等各种可以存储程序代码的介质。
另一方面,本申请实施例还提供一种计算机程序产品,所述计算机程序产品包括存储在非暂态计算机可读存储介质上的计算机程序,所述计算机程序包括程序指令,当所述程序指令被计算机执行时,计算机能够执行上述各方法实施例所提供的CSI反馈方法,该方法包括:
确定CSI测量时每组数据层对应的CSI测量资源;
确定CSI测量时每组数据层与DMRS端口之间的第一对应关系;
确定CSI测量时每组数据层与CSI-RS端口之间的映射方式;
确定CSI测量时使用的传输方式和对应的CSI上报方式;
根据所述CSI测量资源、所述第一对应关系、所述映射方式、所述CSI测量时使用的传输方式和对应的CSI上报方式进行CSI反馈。
另一方面,本申请实施例还提供一种非暂态计算机可读存储介质,其上存储有计算机程序,该计算机程序被处理器执行时实现以执行上述各实施例提供的方法,包括:
确定CSI测量时每组数据层对应的CSI测量资源;
确定CSI测量时每组数据层与DMRS端口之间的第一对应关系;
确定CSI测量时每组数据层与CSI-RS端口之间的映射方式;
确定CSI测量时使用的传输方式和对应的CSI上报方式;
根据所述CSI测量资源、所述第一对应关系、所述映射方式、所述CSI测量时使用的传输方式和对应的CSI上报方式进行CSI反馈。
最后应说明的是:以上实施例仅用以说明本申请的技术方案,而非对其限制;尽管参照前述实施例对本申请进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。
Claims (43)
- 一种CSI反馈方法,其特征在于,包括:确定信道状态信息CSI测量时每组数据层对应的CSI测量资源;确定CSI测量时每组数据层与解调参考信号DMRS端口之间的第一对应关系;确定CSI测量时每组数据层与信道状态信息参考信号CSI-RS端口之间的映射方式;确定CSI测量时使用的传输方式和对应的CSI上报方式;根据所述CSI测量资源、所述第一对应关系、所述映射方式、所述CSI测量时使用的传输方式和对应的CSI上报方式进行CSI反馈。
- 根据权利要求1所述的CSI反馈方法,其特征在于,所述确定CSI测量时每组数据层对应的信道状态信息CSI测量资源,包括:对用于CSI测量的第一数量个数据层进行分组,得到第二数量个数据层组;为每个数据层组设置一个CSI测量资源。
- 根据权利要求1或2所述的CSI反馈方法,其特征在于,所述CSI测量资源包括:信道状态信息参考信号CSI-RS资源;和/或CSI-RS资源集合;和/或同一个资源中的不同CSI-RS端口子集。
- 根据权利要求2所述的CSI反馈方法,其特征在于,所述第二数量小于或等于2。
- 根据权利要求1所述的CSI反馈方法,其特征在于,所述确定CSI测量时每组数据层与DMRS端口之间的第一对应关系,包括:为每个数据层组设置一个DMRS端口组,所述DMRS端口组中的DMRS端口的数量与对应的数据层组中的数据层的数量相同。
- 根据权利要求5所述的CSI反馈方法,其特征在于,所述DMRS端口组中的各个DMRS端口具有准共址QCL关系。
- 根据权利要求1所述的CSI反馈方法,其特征在于,所述确定CSI测量时每组数据层与CSI-RS端口之间的映射方式,包括:将用于CSI测量的第一数量个数据层映射到第三数量个CSI-RS端口上,所述第三数量大于或等于所述第一数量。
- 根据权利要求8所述的CSI反馈方法,其特征在于,所述第一数量个数据层被划分为第二数量个数据层组;所述将用于CSI测量的第一数量个数据层映射到第三数量个CSI-RS端口上,包括:若需要上报预编码矩阵指示PMI,则确定每个数据层组对应的预编码矩阵,并根据所述预编码矩阵确定每个数据层组与对应的CSI-RS端口组之间的第一映射关系;若不需要上报PMI、且网络侧已指示每组数据层与CSI-RS端口之间的第二对应关系,则根据所述第二对应关系,确定每个数据层组与对应的CSI-RS端口组之间的第二映射关系;若不需要上报PMI、且网络侧未指示所述第二对应关系,则为每个数据层组设置与对应的CSI-RS端口组之间的第三映射关系;其中,所述CSI-RS端口组中的CSI-RS端口的数量大于或等于对应的数据层组中的数据层的数量,每个CSI-RS端口组对应一个CSI测量资源。
- 根据权利要求9所述的CSI反馈方法,其特征在于,所述根据所述预编码矩阵确定每个数据层组与对应的CSI-RS端口组之间的第一映射关系,包括:利用第二公式确定所述第一映射关系;其中,所述第二公式包括:W Group_i代表第i个数据层组对应的预编码矩阵;所述确定每个数据层组与对应的CSI-RS端口组之间的第二映射关系,包括:利用第三公式确定所述第二映射关系;其中,所述第三公式包括:所述为每个数据层组设置与对应的CSI-RS端口组之间的第三映射关系,包括:利用第四公式确定所述第三映射关系;其中,所述第四公式包括:
- 根据权利要求1所述的CSI反馈方法,其特征在于,所述CSI测量时使用的传输方式包括第一传输方式,所述第一传输方式用于表征只传输一个数据层组;所述第一传输方式对应的CSI上报方式包括第一CSI上报方式或 第二CSI上报方式;其中,所述第一CSI上报方式包括上报一个数据层组对应的CSI和第一标识信息,所述第一标识信息用于表征待上报的数据层组映射到的CSI-RS端口组;所述第二CSI上报方式包括上报所有数据层组对应的CSI。
- 根据权利要求1所述的CSI反馈方法,其特征在于,所述CSI测量时使用的传输方式包括第二传输方式,所述第二传输方式用于表征同时传输所有数据层组;所述第二传输方式对应的CSI上报方式包括上报所有数据层组对应的CSI。
- 根据权利要求11或12所述的CSI反馈方法,其特征在于,还包括:若需要上报PMI,则上报所述待上报的数据层组使用的预编码矩阵,以及所述待上报的数据层组的数据层数量;若不需要上报PMI,则上报所述待上报的数据层组的数据层数量。
- 根据权利要求13所述的CSI反馈方法,其特征在于,还包括:上报信道质量指示CQI信息。
- 一种CSI反馈装置,其特征在于,包括:第一确定模块,用于信道状态信息CSI测量时每组数据层对应的CSI测量资源;第二确定模块,用于确定CSI测量时每组数据层与解调参考信号DMRS端口之间的第一对应关系;第三确定模块,用于确定CSI测量时每组数据层与信道状态信息参考信号CSI-RS端口之间的映射方式;第四确定模块,用于确定CSI测量时使用的传输方式和对应的 CSI上报方式;CSI反馈模块,用于根据所述CSI测量资源、所述第一对应关系、所述映射方式、所述CSI测量时使用的传输方式和对应的CSI上报方式进行CSI反馈。
- 根据权利要求15所述的CSI反馈装置,其特征在于,所述第一确定模块包括:分组子模块,用于对用于CSI测量的第一数量个数据层进行分组,得到第二数量个数据层组;CSI测量资源设置子模块,用于为每个数据层组设置一个CSI测量资源。
- 根据权利要求15或16所述的CSI反馈装置,其特征在于,所述CSI测量资源包括:信道状态信息参考信号CSI-RS资源;和/或CSI-RS资源集合;和/或同一个资源中的不同CSI-RS端口子集。
- 根据权利要求16所述的CSI反馈装置,其特征在于,所述第二数量小于或等于2。
- 根据权利要求15所述的CSI反馈装置,其特征在于,述第二确定模块包括:DMRS端口组设置子模块,用于为每个数据层组设置一个DMRS端口组,所述DMRS端口组中的DMRS端口的数量与对应的数据层组中的数据层的数量相同。
- 根据权利要求19所述的CSI反馈装置,其特征在于,所述DMRS端口组中的各个DMRS端口具有准共址QCL关系。
- 根据权利要求15所述的CSI反馈装置,其特征在于,所述第三确定模块包括:映射子模块,用于将用于CSI测量的第一数量个数据层映射到第三数量个CSI-RS端口上,所述第三数量大于或等于所述第一数量。
- 根据权利要求22所述的CSI反馈装置,其特征在于,所述第一数量个数据层被划分为第二数量个数据层组;所述映射子模块包括:第一确定单元,用于若需要上报预编码矩阵指示PMI,则确定每个数据层组对应的预编码矩阵,并根据所述预编码矩阵确定每个数据层组与对应的CSI-RS端口组之间的第一映射关系;第二确定单元,用于若不需要上报PMI、且网络侧已指示每组数据层与CSI-RS端口之间的第二对应关系,则根据所述第二对应关系,确定每个数据层组与对应的CSI-RS端口组之间的第二映射关系;第三确定单元,用于若不需要上报PMI、且网络侧未指示所述第二对应关系,则为每个数据层组设置与对应的CSI-RS端口组之间的第三映射关系;其中,所述CSI-RS端口组中的CSI-RS端口的数量大于或等于对应的数据层组中的数据层的数量,每个CSI-RS端口组对应一个CSI测量资源。
- 根据权利要求23所述的CSI反馈装置,其特征在于,所述第一确定单元具体用于:利用第二公式确定所述第一映射关系;其中,所述第二公式包括:W Group_i代表第i个数据层组对应的预编码矩阵;所述第二确定单元具体用于:利用第三公式确定所述第二映射关系;其中,所述第三公式包括:所述第三确定单元具体用于:利用第四公式确定所述第三映射关系;其中,所述第四公式包括:
- 根据权利要求15所述的CSI反馈装置,其特征在于,所述CSI测量时使用的传输方式包括第一传输方式,所述第一传输方式用于表征只传输一个数据层组;所述第一传输方式对应的CSI上报方式包括第一CSI上报方式或第二CSI上报方式;其中,所述第一CSI上报方式包括上报一个数据层组对应的CSI和第一标识信息,所述第一标识信息用于表征待上报的数据层组映射到的CSI-RS端口组;所述第二CSI上报方式包括上报所有数据层组对应的CSI。
- 根据权利要求15所述的CSI反馈装置,其特征在于,所述CSI测量时使用的传输方式包括第二传输方式,所述第二传输方式用于表征同时传输所有数据层组;所述第二传输方式对应的CSI上报方式包括上报所有数据层组对应的CSI。
- 根据权利要求25或26所述的CSI反馈装置,其特征在于, 所述CSI反馈模块还用于:若需要上报PMI,则上报所述待上报的数据层组使用的预编码矩阵,以及所述待上报的数据层组的数据层数量;若不需要上报PMI,则上报所述待上报的数据层组的数据层数量。
- 根据权利要求27所述的装置,其特征在于,所述CSI反馈模块还用于:上报信道质量指示CQI信息。
- 一种电子设备,包括存储器、处理器及存储在存储器上并可在处理器上运行的程序,其特征在于,所述处理器执行所述程序时实现如下步骤:确定信道状态信息CSI测量时每组数据层对应的CSI测量资源;确定CSI测量时每组数据层与解调参考信号DMRS端口之间的第一对应关系;确定CSI测量时每组数据层与信道状态信息参考信号CSI-RS端口之间的映射方式;确定CSI测量时使用的传输方式和对应的CSI上报方式;根据所述CSI测量资源、所述第一对应关系、所述映射方式、所述CSII测量时使用的传输方式和对应的CSI上报方式进行CSI反馈。
- 根据权利要求29所述的电子设备,其特征在于,所述确定CSI测量时每组数据层对应的信道状态信息CSI测量资源,包括:对用于CSI测量的第一数量个数据层进行分组,得到第二数量个数据层组;为每个数据层组设置一个CSI测量资源。
- 根据权利要求29或30所述的电子设备,其特征在于,所述CSI测量资源包括:信道状态信息参考信号CSI-RS资源;和/或CSI-RS资源集合;和/或同一个资源中的不同CSI-RS端口子集。
- 根据权利要求30所述的电子设备,其特征在于,所述第二数量小于或等于2。
- 根据权利要求29所述的电子设备,其特征在于,所述确定CSI测量每组数据层与DMRS端口之间的第一对应关系,包括:为每个数据层组设置一个DMRS端口组,所述DMRS端口组中的DMRS端口的数量与对应的数据层组中的数据层的数量相同。
- 根据权利要求33所述的电子设备,其特征在于,所述DMRS端口组中的各个DMRS端口具有准共址QCL关系。
- 根据权利要求29所述的电子设备,其特征在于,所述确定CSI测量时每组数据层与CSI-RS端口之间的映射方式,包括:将用于CSI测量的第一数量个数据层映射到第三数量个CSI-RS 端口上,所述第三数量大于或等于所述第一数量。
- 根据权利要求36所述的电子设备,其特征在于,所述第一数量个数据层被划分为第二数量个数据层组;所述将用于CSI测量的第一数量个数据层映射到第三数量个CSI-RS端口上,包括:若需要上报预编码矩阵指示PMI,则确定每个数据层组对应的预编码矩阵,并根据所述预编码矩阵确定每个数据层组与对应的CSI-RS端口组之间的第一映射关系;若不需要上报PMI、且网络侧已指示每组数据层与CSI-RS端口之间的第二对应关系,则根据所述第二对应关系,确定每个数据层组与对应的CSI-RS端口组之间的第二映射关系;若不需要上报PMI、且网络侧未指示所述第二对应关系,则为每个数据层组设置与对应的CSI-RS端口组之间的第三映射关系;其中,所述CSI-RS端口组中的CSI-RS端口的数量大于或等于对应的数据层组中的数据层的数量,每个CSI-RS端口组对应一个CSI测量资源。
- 根据权利要求37所述的电子设备,其特征在于,所述根据所述预编码矩阵确定每个数据层组与对应的CSI-RS端口组之间的第一映射关系,包括:利用第二公式确定所述第一映射关系;其中,所述第二公式包括:W Group_i代表第i个数据层组对应的预编码矩阵;所述确定每个数据层组与对应的CSI-RS端口组之间的第二映射关系,包括:利用第三公式确定所述第二映射关系;其中,所述第三公式包括:所述为每个数据层组设置与对应的CSI-RS端口组之间的第三映射关系,包括:利用第四公式确定所述第三映射关系;其中,所述第四公式包括:
- 根据权利要求29所述的电子设备,其特征在于,所述CSI测量时使用的传输方式包括第一传输方式,所述第一传输方式用于表征只传输一个数据层组;所述第一传输方式对应的CSI上报方式包括第一CSI上报方式或第二CSI上报方式;其中,所述第一CSI上报方式包括上报一个数据层组对应的CSI和第一标识信息,所述第一标识信息用于表征待上报的数据层组映射到的CSI-RS端口组;所述第二CSI上报方式包括上报所有数据层组对应的CSI。
- 根据权利要求29所述的电子设备,其特征在于,所述CSI测量时使用的传输方式包括第二传输方式,所述第二传输方式用于表征同时传输所有数据层组;所述第二传输方式对应的CSI上报方式包括上报所有数据层组对应的CSI。
- 根据权利要求39或40所述的电子设备,其特征在于,还包括:若需要上报PMI,则上报所述待上报的数据层组使用的预编码矩阵,以及所述待上报的数据层组的数据层数量;若不需要上报PMI,则上报所述待上报的数据层组的数据层数量。
- 根据权利要求41所述的电子设备,其特征在于,还包括:上报信道质量指示CQI信息。
- 一种非暂态计算机可读存储介质,其上存储有计算机程序,其特征在于,该计算机程序被处理器执行时实现如权利要求1至14任一项所述CSI反馈方法的步骤。
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