WO2025044985A1 - 信道状态信息的确定方法、终端及网络侧设备 - Google Patents
信道状态信息的确定方法、终端及网络侧设备 Download PDFInfo
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- WO2025044985A1 WO2025044985A1 PCT/CN2024/114561 CN2024114561W WO2025044985A1 WO 2025044985 A1 WO2025044985 A1 WO 2025044985A1 CN 2024114561 W CN2024114561 W CN 2024114561W WO 2025044985 A1 WO2025044985 A1 WO 2025044985A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
Definitions
- the present application belongs to the field of communication technology, and specifically relates to a method for determining channel state information, a terminal, and a network-side device.
- ultra-large-scale antennas matching the new frequency bands will be introduced based on the commercial large-scale antenna design.
- the Extremely Large Aperture Array (ELAA)
- ELAA Extremely Large Aperture Array
- NR 5G New Radio
- the maximum number of ports may need to be expanded to 48, 64, 96, or even 128. Then, measuring the CSI of the entire channel through a large-scale CSI-RS port will inevitably bring high CSI-RS resource overhead and affect network performance.
- the embodiments of the present application provide a method for determining channel state information, a terminal, and a network-side device, which can reduce the CSI-RS resource overhead when determining the CSI of the entire channel and ensure network performance.
- a method for determining channel state information comprising: a terminal determines CSI corresponding to N second ports based on a channel state information reference signal CSI-RS corresponding to M first ports; and sends the CSI corresponding to the N second ports to a network side device; wherein the N second ports are CSI-RS ports configured by the network side device for the terminal, and the M first ports are part of the N second ports.
- a method for determining channel state information wherein a network side device receives channel state information CSI corresponding to N second ports sent by a terminal; wherein the CSI corresponding to the N second ports is determined based on a channel state information reference signal CSI-RS corresponding to M first ports, the N second ports are CSI-RS ports configured by the network side device for the terminal, and the M first ports are some of the N second ports.
- a device for determining channel state information including: a determination module, the determination module is used to determine the CSI corresponding to N second ports based on the channel state information reference signal CSI-RS corresponding to the M first ports; a sending module is used to send the CSI corresponding to the N second ports to a network side device; wherein the N second ports are CSI-RS ports configured by the network side device for the terminal, and the M first ports are the N Some of the second ports.
- a device for determining channel state information including: a receiving module, configured for a network side device to receive channel state information CSI corresponding to N second ports sent by a terminal;
- the CSI corresponding to the N second ports is determined based on the channel state information reference signal CSI-RS corresponding to the M first ports, the N second ports are the CSI-RS ports configured by the network side device for the terminal, and the M first ports are some of the N second ports.
- a terminal comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the steps of the method described in the first aspect.
- a network side device which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the second aspect are implemented.
- FIG1 is a schematic diagram of the structure of a wireless communication system provided by an exemplary embodiment of the present application.
- FIG. 2 is a flowchart of a method for determining channel state information provided by an exemplary embodiment of the present application.
- first, second, etc. of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by “first” and “second” are generally of one type, and the number of objects is not limited, for example, the first object can be one or more.
- “or” in the present application represents at least one of the connected objects.
- “A or B” covers three schemes, namely, Scheme 1: including A but not including B; Scheme 2: including B but not including A; Scheme 3: including both A and B.
- the character "/" generally indicates that the objects associated with each other are in an "or” relationship.
- the base station can be called Node B (Node B, NB), Evolved Node B (Evolved Node B, eNB), the next generation Node B (the next generation Node B, gNB), New Radio Node B (New Radio Node B, NR Node B), access point, Relay Base Station (Relay Base Station, RBS), Serving Base Station (Serving Base Station, SBS), Base Transceiver Station (Base Transceiver Station, BTS), radio base station, radio transceiver, base
- the base station is not limited to specific technical terms as long as the same technical effect is achieved. It should be noted that in the embodiments of the present application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.
- QCL Type D spatial reception parameters.
- the terminal determines the CSI corresponding to the N second ports based on the CSI-RS corresponding to the M first ports, wherein the N second ports are CSI-RS ports configured by the network side device for the terminal, and the M first ports are some of the N second ports.
- FIG. 3 it is a flow chart of a method 300 for determining channel state information provided by an exemplary embodiment of the present application.
- the method 300 can be, but is not limited to, executed by a terminal, and can be specifically executed by hardware or software installed in the terminal.
- the method 300 can at least include the following steps.
- S310 The terminal determines CSI corresponding to N second ports based on a channel state information reference signal CSI-RS corresponding to the M first ports.
- the remaining information can be configured to the terminal by protocol agreement, pre-configuration, etc., so that the terminal can realize the reception of CSI-RS and the determination of the CSI corresponding to N second ports.
- the bitmap may include but is not limited to at least one of a first bitmap, a second bitmap, a third bitmap, and a fourth bitmap.
- the second bitmap has a length of N2 and is used to indicate a mapping relationship between the second port and the first port in a vertical dimension.
- the first bitmap and the second bitmap can be represented as [1 0 1 0 1 0 1 0] and [1 0 1 0] respectively, where "1" means transmission and "0" means no transmission.
- the length of the third bitmap is N1*N2.
- the third bitmap can be used to indicate the mapping relationship between the second port and the first port in each polarized antenna group in the dual-polarized antenna group, that is, the port patterns in the two polarization directions are shared.
- the third bitmap is used to indicate the mapping relationship between the second port and the first port in a specific polarized antenna group in the dual-polarized antenna group. That is, the third bitmap indication is only applicable to one of the polarized antenna groups, and all the second ports and the first ports of the other polarized antenna group are mapped one to one by default.
- the specific polarized antenna group can be determined by protocol agreement, high-level indication, etc., which is not limited here.
- the length of the fourth bitmap is N1*N2*2, and the fourth bitmap is used to indicate the mapping relationship between the second port and the first port in the dual-polarized antenna group. For example, a bit indicated as 1 in the fourth bitmap indicates that the corresponding second port is activated as the first port, and a bit indicated as 0 indicates that the corresponding second port cannot be mapped to the first port.
- the third bitmap and the fourth bitmap have a little more signaling overhead, but can more flexibly indicate any selected mapping relationship.
- the second indication information is used to indicate that one of the multiple mapping relationships pre-configured or agreed upon by the protocol is the first mapping relationship.
- the first mapping relationship may be different combination states indicated by different bits in the second indication information. For example, assuming that the multiple mapping relationships pre-configured or agreed upon by the protocol are as shown in Table 1. Then, the network side device may indicate different first mapping relationships through the second indication information.
- the index described in Table 1 is a port index.
- this application only lists the configuration of one CSI-RS resource.
- the first mapping relationship can be used in common for all CSI-RS resources associated with the CSI report, or different mapping relationships can be configured for different CSI-RS resources, which is not limited here.
- the first mapping relationship mentioned in the present application its activation or effective time can be implemented by protocol agreement, high-level configuration, etc.
- the CSI-RS such as CSI-RS
- a specific time such as a periodic one or several receiving times
- the first mapping relationship is effective or activated.
- the CSI-RS is received at a specific time in the CSI-RS resource, it is determined that the first mapping relationship is effective or activated.
- the CSI-RS is configured to be sent periodically, and the first mapping relationship is effective or activated at certain specific moments through high-level signaling indication, and at other sending moments except the specific moment, the first mapping relationship is effective or the activation fails or is in an inactive state, thereby enabling the time-frequency resource overhead occupied by the CSI-RS port to be saved at a specific moment, such as the terminal can determine the full CSI-RS based on the CSI-RS corresponding to the partial CSI-RS port at a specific moment.
- CSI corresponding to the CSI-RS port the first mapping relationship is effective or activated at certain specific moments through high-level signaling indication, and at other sending moments except the specific moment, the first mapping relationship is effective or the activation fails or is in an inactive state, thereby enabling the time-frequency resource overhead occupied by the CSI-RS port to be saved at a specific moment, such as the terminal can determine the full CSI-RS based on the CSI-RS corresponding to the partial CSI-RS port at a specific moment.
- the first mapping relationship is related to the first capability information of the terminal; wherein the first capability information is used to indicate that when the terminal is configured with a first number of second ports, the terminal can support the capability of a second number of first ports, as well as the mapping relationship or ratio size (or ratio relationship) between the second number of first ports and the first number of second ports.
- the aforementioned "first mapping relationship is related to the first capability information of the terminal" can be understood as the first mapping relationship can be determined based on the first capability information, thereby ensuring that the first mapping relationship matches the capability of the terminal, thereby ensuring the accuracy of the CSI of the N second ports determined by the terminal based on the CSI-RS corresponding to the M first ports.
- first mapping relationship may be consistent with or inconsistent with the number of first ports, the number of second ports, the mapping relationship or the ratio relationship indicated by the first capability information, and is not limited here.
- the terminal may also send second capability information to the network side device so that the network side device is aware of the maximum number of ports of the sum of multiple activated CSI-RSs that the terminal can process in any time domain unit (such as a time slot).
- the second capability information is used to indicate at least one of the following 11)-13).
- a maximum number of ports wherein the maximum number of ports is obtained by counting the first port or the second port in all activated CSI-RS resources processed by the terminal in any time domain unit (such as a time slot) and associated with a CSI report.
- one implementation method for counting the maximum number of ports of the sum of multiple activated CSI-RSs is: If a corresponding CSI-RS port is configured with a first port, the first port quantity M is counted; or although the first port is configured, the second port quantity N associated with the CSI report is counted.
- the terminal may report the maximum number of ports that can be supported based only on the first number of ports configured for all activated CSI-RS resources.
- the terminal may report the maximum number of ports that can be supported based only on the second port number count configured for all activated CSI-RS resources.
- the terminal receives the first indication information (such as CSI report signaling), and the CSI report signaling is configured with CSI-resourceConfig, wherein the CSI-resource indicates the associated CSI-RS resource ID.
- the CSI report signaling will also configure the codebook to report the corresponding format, including the corresponding base station antenna pattern when calculating CSI based on the CSI-RS resource, such as the number N1 of CSI-RS ports in the horizontal dimension (the above-mentioned second port) and the number N2 of CSI-RS ports in the vertical dimension (the above-mentioned second port).
- the total number of second ports is N1*N2*2.
- the terminal needs to refer to the values of N1 and N2 when calculating the CSI of the second port.
- N1 and N2 correspond to the DFT basis lengths of the horizontal dimension and the vertical dimension, respectively.
- the network-side device also configures the number of actual sending ports (the above-mentioned first ports) of the CSI-RS resource associated with the codebook, for example, the number of actual CSI-RS ports in the horizontal dimension M1 and the number of CSI-RS ports in the vertical dimension M2. Then, for the dual-polarized antenna array, the total number of second ports is n1*n2*2.
- the number of first ports in the horizontal dimension M1 is less than or equal to N1
- the number of first ports in the vertical dimension M2 is less than or equal to N2.
- the terminal receives the CSI-RS on the first port of the CSI-RS resource and performs channel measurement to obtain channel measurement information, which can be recorded as CSI-RS.
- the measurement channel information on the second port of the CSI-RS resource is obtained, and the CSI corresponding to the second port is calculated according to the measurement channel information on the second port and the CSI report type.
- the spatial domain information of the codebook in the CSI can be obtained, where p is the number of second ports.
- the terminal can further improve the accuracy of determining the CSI corresponding to N second ports by discretely distributing the CSI-RS port design in the spatial domain and indicating the CSI-RS resource pattern and the first mapping relationship through the first indication information.
- FIG. 4 it is a flow chart of a method 400 for determining channel state information provided by an exemplary embodiment of the present application, and the method 400 can be, but is not limited to, executed by a terminal, and specifically can be executed by hardware or software installed in the terminal.
- the method 400 can at least include the following steps.
- S410 The terminal determines CSI corresponding to N second ports based on the CSI-RS corresponding to the M first ports.
- the N second ports are CSI-RS ports configured by the network side device for the terminal, and the M first ports are some of the N second ports.
- the spatial domain filter coefficients can be obtained by at least one of the following ways 1 to 4, but not limited to.
- Method 1 The terminal obtains the spatial filter coefficient based on the first downlink RS measurement; wherein, the first downlink RS is the CSI-RS or the first downlink RS is associated with the CSI Report, which can also be understood as the terminal obtaining the spatial filter coefficient based on the CSI-RS itself.
- the process of the terminal obtaining the spatial domain filter coefficient based on the first downlink RS measurement may include: the terminal obtains the spatial domain related information (such as spatial domain correlation, spatial domain spectrum) or the mutual correlation matrix of the wireless channel between ports by measuring the first downlink RS, wherein, for the spatial domain related information, the terminal can determine the mutual correlation matrix based on the spatial domain related information, and then obtain the spatial domain filter coefficient W_filer based on the mutual correlation matrix and the minimum mean square error (MMSE) criterion in the Wiener filtering algorithm.
- MMSE minimum mean square error
- Rm,m represents the cross-correlation matrix between the CSI-RS ports used by the terminal to receive the first downlink RS, the size of Rm,m is m ⁇ m, and the value of m depends on the terminal implementation;
- Rn,m represents the cross-correlation matrix between the CSI-RS port to be estimated and the CSI-RS port receiving the first downlink RS, the size of Rn,m is n ⁇ m, and the value of n also depends on the terminal implementation;
- ⁇ 2 represents the average interference noise power in the receiver on the terminal side, and I represents the unit matrix. It can be understood that in mode 1, since the first downlink RS is the CSI-RS, the CSI-RS port receiving the first downlink RS is the first port, and the CSI-RS port to be estimated is the first Two ports.
- the number of actual transmission ports is the number of first ports
- the number of logical transmission ports is the number of second ports.
- the terminal can calculate the spatial domain filtering coefficient of the horizontal dimension or vertical dimension or the horizontal and vertical two-dimensional joint on the antenna panel based on the cross-correlation matrix between the wireless channels corresponding to the CSI-RS (the above-mentioned first downlink RS) sent by the 4 ⁇ 4 antenna ports on the left, and then obtain the channel measurement information (such as channel estimation information, etc.) of the first port based on the CSI-RS corresponding to the first port (such as the solid black part), and then filter out the channel measurement information corresponding to the second port in combination with the calculated spatial domain filtering coefficient, and finally obtain CSI reporting information, i.e., CSI, based on the channel measurement information corresponding to the second port.
- the left antenna part and the right antenna part may correspond to different antenna panels of the base station.
- the two panels have the same orientation and may have the same spatial filtering coefficient, but there is a certain antenna spacing between the two panels.
- the CSI-RS is configured for periodic transmission, and the high-level signaling indicates that at certain specific moments, the number of ports configured for the CSI-RS corresponds to the second port, and at other transmission moments, the number of ports configured for the CSI-RS corresponds to the first port.
- the terminal can obtain the spatial domain filter coefficient based on the full channel information of the CSI-RS at a specific moment, and then derive the full channel information, i.e., CSI, based on the spatial domain filter coefficient obtained based on the CSI-RS at other transmission moments.
- the terminal calculates the spatial filtering coefficient based on one of the CSI-RS resources for performing spatial filtering on other CSI-RS resources
- the CSI-RS resources have the same QCL relationship.
- Method 2 The terminal is measured based on the second downlink RS.
- the terminal can obtain spatial domain related information (such as spatial domain correlation, spatial domain spectrum) or the mutual correlation matrix between ports corresponding to the wireless channel according to the second downlink RS measurement, and then determine the spatial domain filter coefficient based on the spatial domain related information.
- spatial domain related information such as spatial domain correlation, spatial domain spectrum
- the mutual correlation matrix between ports corresponding to the wireless channel according to the second downlink RS measurement
- the second downlink RS may be a multi-port RS configured separately by the network side device.
- the second downlink RS may be further extended based on TRS (Tracking Reference Signal) in the 5G NR protocol, for example, the second downlink RS is a TRS configured with multiple ports.
- TRS Tracking Reference Signal
- the terminal not only obtains the wireless channel characteristics QCL type A, QCL type B, QCL type C, or QCL type D, but also obtains the base station transmission spatial characteristics, from which the spatial filter coefficients can be derived.
- the port pattern corresponding to the second downlink RS may be a subset or a full set of the second port pattern.
- the full set indicates that the actual sending port of the second downlink RS and the second port are in a one-to-one mapping relationship in the same polarization direction.
- the subset indicates that the actual sending port of the second downlink RS and the second port are in a partially continuous one-to-one mapping relationship in the same polarization direction, wherein the partially continuous one-to-one mapping relationship is indicated by means of network high-layer signaling configuration or the like.
- the network side device may configure a time-frequency resource and a sending period corresponding to a second downlink RS, and the corresponding antenna sending port pattern pattern is shown in Figure 5b.
- the network side device may also configure the second port and the first port associated in the CSI-Report through the first indication information as shown in Figure 5c.
- the terminal determines the spatial filter coefficient based on the second downlink RS.
- the relevant description in Formula 1 will not be repeated here.
- the transmission configuration indicator (TCI) state quasi-co-location reference signal corresponding to the CSI-RS includes the second downlink RS, or the CSI-RS and the second downlink RS have the same TCI state quasi-co-location reference signal. That is, the CSI-RS resources need to be QCLed to the second downlink RS, or the CSI-RS resources and the second downlink RS are both QCLed to the same TCI state ID, thereby ensuring the matching between the spatial filter coefficient determined based on the second downlink RS and the CSI-RS determined based on the CSI-RS, thereby improving the accuracy of the CSI determination corresponding to the second port.
- TCI transmission configuration indicator
- Method 3 The terminal is measured based on the third downlink RS, and the third downlink RS is a precoded RS sent by the network side device and subjected to beamforming or delay compensation.
- the terminal receives RSs after different precodings and obtains spatial domain related information (such as the spatial domain power spectrum) or the correlation matrix between ports corresponding to the wireless channel, and then obtains the spatial domain filter coefficient based on the spatial domain power spectrum or the correlation matrix.
- a network-side device can obtain several main beam characteristics of the downlink channel based on some prior information, and send a precoded CSI-RS (the third downlink RS mentioned above), wherein the precoding information can be based on a feature vector obtained by decomposing the singular value decomposition (SVD).
- the processing behavior of the base station can also be based on DFT-based precoding.
- the terminal receives the corresponding CSI-RS port, obtains the power spectrum in the spatial domain, and obtains the correlation coefficient in the spatial domain through Fourier transform, such as the spatial filter coefficient, and then performs filtering processing.
- the TCI state quasi-co-location reference signal corresponding to the CSI-RS includes the third downlink RS, or the CSI-RS and the third downlink RS have the same TCI state quasi-co-location reference signal. That is, the CSI-RS resources need to be QCLed to the third downlink RS, or the CSI-RS resources and the third downlink RS are both QCLed to the same TCI state ID, thereby ensuring the matching between the spatial filter coefficient determined based on the third downlink RS and the CSI-RS determined based on the CSI-RS, thereby improving the accuracy of the CSI determination corresponding to the second port.
- the relevant process of the terminal determining the spatial domain filter coefficient based on the third downlink RS can refer to the relevant description in the aforementioned method 1, and will not be repeated here.
- Mode 4 The terminal receives the spatial domain filter coefficient sent by the network side device.
- the spatial domain filter coefficient can be obtained by the network side device based on uplink channel measurement, such as Sounding Reference Signal (SRS) measurement.
- uplink channel measurement such as Sounding Reference Signal (SRS) measurement.
- SRS Sounding Reference Signal
- the spatial relationship of the SRS and the CSI-RS can QCL the same TCI state indication relationship (for example, the spatial relationship of the SRS and the CSI-RS can both QCL to the same CSI-RS or synchronization signal block (Synchronization Signal and PBCH block, SSB) index), or the downlink reference signal associated with the spatial relationship of the SRS is the CSI-RS itself.
- the spatial relationship of the SRS and the CSI-RS can both QCL to the same CSI-RS or synchronization signal block (Synchronization Signal and PBCH block, SSB) index
- the downlink reference signal associated with the spatial relationship of the SRS is the CSI-RS itself.
- the QCL type in the spatial relation TCI state/TCI states of the aforementioned QCL contains at least one newly introduced QCL type, which is used to indicate the spatial filter coefficient sent by the network side device.
- QCL'typeE': ⁇ Spatial Tx parameter ⁇ thus, by introducing a new QCL type, the spatial filter coefficient can be accurately determined.
- the spatial filter coefficient is indicated or represented by at least one of the following 21)-27).
- a K1 ⁇ 1 vector used to characterize the correlation between the index differences of K1 second antenna ports in the horizontal dimension, where K1 is smaller than N1.
- K2 ⁇ 1 vector used to characterize the correlation between the index differences of K2 second antenna ports in the vertical dimension, where K2 is smaller than N2.
- the beam index or DFT base index may correspond to the indication or representation of the spatial domain filter coefficients in the horizontal dimension (or vertical dimension).
- the process of determining the CSI estimation according to the spatial domain filter coefficient may include: the terminal obtains the bare channel measurement information H_est through channel estimation based on the configuration of the first port CSI-RS, and then filters the bare channel measurement information based on the obtained spatial domain filter coefficient W_filer to obtain the channel measurement information H_filter corresponding to the second port CSI-RS, and then determines the CSI based on the channel measurement information H_filter, for example, which can be expressed by formula (3).
- H_filter(p) W_filer*H_est(k+[1:m]) (3)
- H_filter(p) represents the channel measurement information after filtering with the second port index p
- H_est(k+[1:m]) represents the channel measurement information of the m ports corresponding to the first port index (k+[1:m]).
- p is associated with k, and the purpose of the association is to achieve the purpose of filtering the surrounding m adjacent first ports with the second port index p.
- the CSI processing performance can be enhanced.
- the number of CSI processing units that can be associated with the CSI report is related to the first information
- the first information is a mathematical ratio of the number of the second ports to the first port.
- the mathematical ratio is N/M
- the number of CSI processing units is determined to be related to the size of N/M.
- the number of CSI processing units associated with the CSI report is determined based on the number of first CSI processing units and a predetermined value
- the first CSI processing unit is a CSI unit used when the terminal determines the CSI corresponding to the N second ports based on the CSI-RS corresponding to the N second ports.
- the first CSI processing unit used is S.
- the terminal determines the CSI by adopting the method provided in the present application of "estimating the second CSI corresponding to the N second ports according to the first CSI corresponding to the M first ports and the spatial filtering coefficient"
- the number of second CSI processing units adopted is S+predetermined value, wherein the predetermined value is a positive number, such as 1, 2, 3, etc., which can be implemented by protocol agreement, high-level configuration, or network-side configuration.
- the terminal determines the CSI corresponding to the N second ports based on the CSI-RS corresponding to the N second ports” can be understood as: the terminal receives and measures the CSI-RS sent by the network side device based on the N second ports, and determines the CSI corresponding to the N second ports according to the channel measurement results.
- the target parameters configured in the CSI-RS resource associated with the CSI report are related to the second port, wherein the target parameters include a power control offset. That is, in the implementation process of this solution, the parameters such as the power control offset are defined based on the second port, so that the present application can better integrate and apply the technologies in the related technologies and improve the applicability of this case.
- the terminal recovers the full channel information by discretely distributing the CSI-RS port design in the spatial domain and utilizing the spatial correlation between adjacent ports of a large array antenna. This can effectively solve the pilot overhead problem caused by the increase in CSI-RS resource ports for ultra-large-scale antennas, thereby ensuring network performance.
- FIG. 6 it is a flow chart of a method 600 for determining channel state information provided by an exemplary embodiment of the present application.
- the method 600 can be, but is not limited to, executed by a network side device, and can be specifically executed by hardware or software installed in the network side device.
- the method 600 can at least include the following steps.
- S610 A network-side device receives CSI corresponding to N second ports sent by a terminal.
- the CSI corresponding to the N second ports is determined based on the channel state information reference signal CSI-RS corresponding to the M first ports, the N second ports are the CSI-RS ports configured by the network side device for the terminal, and the M first ports are some of the N second ports.
- the method includes: a network side device sends first indication information to a terminal; wherein, a CSI-RS resource pattern, the CSI-RS resource pattern includes M1 first ports in a horizontal dimension, M2 first ports in a vertical dimension, and N1 second ports in a horizontal dimension, N2 second ports in a vertical dimension; a first mapping relationship, wherein the first mapping relationship is configured with a mapping relationship between N1 second ports and M1 first ports, or a mapping relationship between N2 second ports and M2 first ports.
- the first mapping relationship is indicated by at least one of the following: a bitmap; second indication information, used to indicate that one of a plurality of mapping relationships pre-configured or agreed upon by protocol is the first mapping relationship.
- the bitmap includes at least one of the following items: a first bitmap, wherein the length of the first bitmap is N1 and is used to indicate the mapping relationship between the second port and the first port in the horizontal dimension; a second bitmap, wherein the length of the second bitmap is N2 and is used to indicate the mapping relationship between the second port and the first port in the vertical dimension; a third bitmap, wherein the length of the third bitmap is N1*N2, and the third bitmap is used to indicate the mapping relationship between the second port and the first port in each polarized antenna group in the dual-polarized antenna group, or the third bitmap is used to indicate the mapping relationship between the second port and the first port in a specific polarized antenna group in the dual-polarized antenna group; a fourth bitmap, wherein the length of the fourth bitmap is n1*n2*2, and the fourth bitmap is used to indicate the mapping relationship between the second port and the first port in the dual-polarized antenna group.
- the method also includes at least one of the following: sending a first downlink reference signal RS to the terminal, wherein the first downlink RS is the CSI-RS, and the CSI-RS is used by the terminal to obtain the CSI-RS; sending a second downlink RS to the terminal, wherein the second downlink RS is a multi-port RS, and the second downlink RS is different from the CSI-RS; sending a third downlink RS to the terminal, wherein the third downlink RS is a precoded RS that has undergone beamforming or delay compensation; sending a spatial domain filter coefficient to the terminal, wherein the spatial domain filter coefficient is obtained based on uplink channel measurement; wherein the first downlink RS, the second downlink RS or the third downlink RS is used by the terminal to determine the spatial domain filter coefficient.
- the spatial domain filter coefficient is indicated or represented by at least one of the following: a K1 ⁇ 1 vector, used to characterize the correlation between the index differences of the K1 second antenna ports in the horizontal dimension, K1 is less than the N1; a K2 ⁇ 1 vector, used to characterize the correlation between the index differences of the K2 second antenna ports in the vertical dimension, K2 is less than the N2; a K1 ⁇ K2 two-dimensional correlation matrix, used to characterize the autocorrelation matrix of the index differences of the K1 second antenna ports in the horizontal dimension and the K2 second antenna ports in the vertical dimension, K1 is less than the N1, and K2 is less than the N2; beam index; discrete Fourier transform DFT basis index; relative power difference corresponding to different beam indices; relative power difference corresponding to different DFT basis indices.
- the method also includes: receiving second capability information sent by the terminal; wherein the second capability information is used to indicate at least one of the following: a maximum number of ports, wherein the maximum number of ports is obtained by counting the first ports or the second ports in all activated CSI-RS resources processed by the terminal in any time domain unit and associated with the CSI report; the number of first ports in all activated CSI-RS resources processed by the terminal in any time domain unit and associated with the CSI report; the number of second ports in all activated CSI-RS resources processed by the terminal in any time domain unit and associated with the CSI report.
- a maximum number of ports wherein the maximum number of ports is obtained by counting the first ports or the second ports in all activated CSI-RS resources processed by the terminal in any time domain unit and associated with the CSI report
- the number of first ports in all activated CSI-RS resources processed by the terminal in any time domain unit and associated with the CSI report the number of second ports in all activated CSI-RS resources processed by the terminal in any time domain unit and associated with the
- each implementation method in method embodiment 600 has the same or corresponding technical features as the aforementioned method embodiments 200-400. Therefore, the implementation process of each implementation method in method embodiment 600 can refer to the relevant description in the aforementioned method embodiments 200-400, and achieve the same or corresponding technical effects. In order to avoid repetition, it will not be repeated here.
- the channel state information determination method provided in the embodiment of the present application may be executed by a channel state information determination device.
- the channel state information determination device performing the channel state information determination method is taken as an example to illustrate the channel state information determination device provided in the embodiment of the present application.
- FIG. 7 it is a structural schematic diagram of a channel state information determination device 700 provided in an embodiment of the present application, and the device 700 includes: a determination module 710, used to determine the CSI corresponding to N second ports based on the channel state information reference signal CSI-RS corresponding to the M first ports; a sending module 720, used to send the CSI corresponding to the N second ports to the network side device; wherein the N second ports are the CSI-RS ports configured by the network side device for the terminal, and the M first ports are some of the N second ports.
- a determination module 710 used to determine the CSI corresponding to N second ports based on the channel state information reference signal CSI-RS corresponding to the M first ports
- a sending module 720 used to send the CSI corresponding to the N second ports to the network side device
- the N second ports are the CSI-RS ports configured by the network side device for the terminal
- the M first ports are some of the N second ports.
- the first port is mapped to M1 ports in the horizontal dimension and M2 ports in the vertical dimension in the same polarization direction
- the second port is mapped to N1 ports in the horizontal dimension and N2 ports in the vertical dimension in the same polarization direction
- M1 is less than or equal to N1
- M2 is less than or equal to N2
- the device 700 also includes a receiving module for receiving first indication information sent by a network side device; wherein the first indication information includes or indicates at least one of the following: a pattern of CSI-RS resources, the pattern of CSI-RS resources including M1 first ports in the horizontal dimension, M2 first ports in the vertical dimension, and N1 second ports in the horizontal dimension, and N2 second ports in the vertical dimension; a first mapping relationship, the first mapping relationship is configured with a mapping relationship between N1 second ports and M1 first ports, or a mapping relationship between N2 second ports and M2 first ports.
- a receiving module for receiving first indication information sent by a network side device; wherein the first indication information includes or indicates at least one of the following: a pattern of CSI-RS resources, the pattern of CSI-RS resources including M1 first ports in the horizontal dimension, M2 first ports in the vertical dimension, and N1 second ports in the horizontal dimension, and N2 second ports in the vertical dimension; a first mapping relationship, the first mapping relationship is configured with a mapping relationship between N1 second ports and
- the first mapping relationship is indicated by at least one of the following: a bitmap; second indication information, used to indicate that one of a plurality of mapping relationships pre-configured or agreed upon by protocol is the first mapping relationship.
- the bitmap includes at least one of the following items: a first bitmap, wherein the length of the first bitmap is N1 and is used to indicate the mapping relationship between the second port and the first port in the horizontal dimension; a second bitmap, wherein the length of the second bitmap is N2 and is used to indicate the mapping relationship between the second port and the first port in the vertical dimension; a third bitmap, wherein the length of the third bitmap is N1*N2, and the third bitmap is used to indicate the mapping relationship between the second port and the first port in each polarized antenna group in the dual-polarized antenna group, or the third bitmap is used to indicate the mapping relationship between the second port and the first port in a specific polarized antenna group in the dual-polarized antenna group; a fourth bitmap, wherein the length of the fourth bitmap is n1*n2*2, and the fourth bitmap is used to indicate the mapping relationship between the second port and the first port in the dual-polarized antenna group.
- the determining module 710 is further configured to determine that the first mapping relationship is effective or activated when the CSI-RS is received at a specific time in the CSI-RS resource.
- the first mapping relationship is related to first capability information of the terminal; wherein, the first capability information is used to indicate that when the terminal is configured with a first number of second ports, the terminal supports a second number of first ports, and a mapping relationship or ratio relationship between the second number of first ports and the first number of second ports.
- the determination module 710 determines the CSI corresponding to the N second ports based on the CSI-RS corresponding to the M first ports, including: estimating the CSI corresponding to the N second ports according to the CSI-RS corresponding to the M first ports and the spatial domain filtering coefficient.
- the spatial domain filter coefficient is obtained through at least one of the following: obtained based on measurement of a first downlink RS; wherein the first downlink RS is the CSI-RS, and the CSI-RS is used by the terminal to obtain the CSI-RS; obtained based on measurement of a second downlink RS, wherein the second downlink RS is a multi-port RS, and the second downlink RS is different from the CSI-RS; obtained based on measurement of a third downlink RS, wherein the third downlink RS is a precoded RS that has undergone beamforming or delay compensation; and receiving the spatial domain filter coefficient sent by the network side device.
- the port pattern corresponding to the second downlink RS is a subset or a full set of the second port pattern.
- the TCI state quasi-co-site reference signal corresponding to the CSI-RS includes the second downlink RS or the third downlink RS, or the CSI-RS and the second downlink RS or the third downlink RS have the same TCI state quasi-co-site reference signal.
- the sending module 720 is also used to send second capability information to the network side device; wherein the second capability information is used to indicate at least one of the following: the maximum number of ports, wherein the maximum number of ports is obtained by counting the first port or the second port in all activated CSI-RS resources processed by the terminal in any time domain unit and associated with the CSI report; the number of first ports in all activated CSI-RS resources processed by the terminal in any time domain unit and associated with the CSI report; the number of second ports in all activated CSI-RS resources processed by the terminal in any time domain unit and associated with the CSI report.
- the number of CSI processing units associated with the CSI report is related to first information, which is a mathematical ratio of the number of second ports to the first port; the number of CSI processing units associated with the CSI report is determined based on the number of first CSI processing units and a predetermined value, and the first CSI processing unit is a CSI unit used by the terminal to determine the CSI corresponding to the N second ports based on the CSI-RS corresponding to the N second ports; the target parameters configured in the CSI-RS resources associated with the CSI report are related to the second port, wherein the target parameters include a power control offset.
- the channel state information determination device 700 in the embodiment of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip.
- the electronic device can be a terminal, or it can be other devices other than a terminal.
- the terminal can include but is not limited to the types of terminals 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.
- the channel state information determination device 700 provided in the embodiment of the present application can implement the various processes implemented in the method embodiments of Figures 2 to 4 and achieve the same technical effect. To avoid repetition, it will not be repeated here.
- FIG. 8 it is a structural schematic diagram of a channel state information determination device 800 provided in an embodiment of the present application, and the device 800 includes: a receiving module 810, used to receive channel state information CSI corresponding to N second ports sent by a terminal; wherein the CSI corresponding to the N second ports is determined based on a channel state information reference signal CSI-RS corresponding to M first ports, the N second ports are CSI-RS ports configured by the network side device for the terminal, and the M first ports are part of the N second ports.
- a receiving module 810 used to receive channel state information CSI corresponding to N second ports sent by a terminal; wherein the CSI corresponding to the N second ports is determined based on a channel state information reference signal CSI-RS corresponding to M first ports, the N second ports are CSI-RS ports configured by the network side device for the terminal, and the M first ports are part of the N second ports.
- the device 800 also includes a sending module, used to send first indication information to the terminal; wherein the first indication information includes or indicates at least one of the following: a pattern of CSI-RS resources, the pattern of CSI-RS resources including M1 first ports in the horizontal dimension, M2 first ports in the vertical dimension, and N1 second ports in the horizontal dimension, and N2 second ports in the vertical dimension; a first mapping relationship, the first mapping relationship is configured with a mapping relationship between N1 second ports and M1 first ports, or a mapping relationship between N2 second ports and M2 first ports.
- a sending module used to send first indication information to the terminal; wherein the first indication information includes or indicates at least one of the following: a pattern of CSI-RS resources, the pattern of CSI-RS resources including M1 first ports in the horizontal dimension, M2 first ports in the vertical dimension, and N1 second ports in the horizontal dimension, and N2 second ports in the vertical dimension; a first mapping relationship, the first mapping relationship is configured with a mapping relationship between N1 second ports and M1 first ports,
- the first mapping relationship is indicated by at least one of the following: a bitmap; second indication information, used to indicate that one of a plurality of mapping relationships pre-configured or agreed upon by protocol is the first mapping relationship.
- the bitmap includes at least one of the following items: a first bitmap, wherein the length of the first bitmap is N1 and is used to indicate the mapping relationship between the second port and the first port in the horizontal dimension; a second bitmap, wherein the length of the second bitmap is N2 and is used to indicate the mapping relationship between the second port and the first port in the vertical dimension; a third bitmap, wherein the length of the third bitmap is N1*N2, and the third bitmap is used to indicate the mapping relationship between the second port and the first port in each polarized antenna group in the dual-polarized antenna group, or the third bitmap is used to indicate the mapping relationship between the second port and the first port in a specific polarized antenna group in the dual-polarized antenna group; a fourth bitmap, wherein the length of the fourth bitmap is n1*n2*2, and the fourth bitmap is used to indicate the mapping relationship between the second port and the first port in the dual-polarized antenna group.
- the sending module is also used for at least one of the following: sending a first downlink reference signal RS to the terminal, wherein the first downlink RS is the CSI-RS, and the CSI-RS is used by the terminal to obtain the CSI-RS; sending a second downlink RS to the terminal, wherein the second downlink RS is a multi-port RS, and the second downlink RS is different from the CSI-RS; sending a third downlink RS to the terminal, wherein the third downlink RS is a precoded RS that has undergone beamforming or delay compensation; sending a spatial domain filter coefficient to the terminal, wherein the spatial domain filter coefficient is obtained based on uplink channel measurement; wherein the first downlink RS, the second downlink RS or the third downlink RS is used by the terminal to determine the spatial domain filter coefficient.
- the spatial domain filter coefficient is indicated or represented by at least one of the following: a K1 ⁇ 1 vector, used to characterize the correlation between the index differences of the K1 second antenna ports in the horizontal dimension, K1 is less than the N1; a K2 ⁇ 1 vector, used to characterize the correlation between the index differences of the K2 second antenna ports in the vertical dimension, K2 is less than the N2; a K1 ⁇ K2 two-dimensional correlation matrix, used to characterize the autocorrelation matrix of the index differences of the K1 second antenna ports in the horizontal dimension and the K2 second antenna ports in the vertical dimension, K1 is less than the N1, and K2 is less than the N2; beam index; discrete Fourier transform DFT basis index; relative power difference corresponding to different beam indices; relative power difference corresponding to different DFT basis indices.
- the receiving module 810 is also used to receive second capability information sent by the terminal; wherein the second capability information is used to indicate at least one of the following: the maximum number of ports, wherein the maximum number of ports is obtained by counting the first port or the second port in all activated CSI-RS resources processed by the terminal in any time domain unit and associated with the CSI report; the number of first ports in all activated CSI-RS resources processed by the terminal in any time domain unit and associated with the CSI report; the number of second ports in all activated CSI-RS resources processed by the terminal in any time domain unit and associated with the CSI report.
- the channel state information determination device 800 in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip.
- the electronic device may be a network side device, or may be a device other than the network side device.
- the network side device may include but is not limited to the types of network side devices 12 listed above, and the embodiment of the present application does not specifically limit this.
- the channel state information determination device 800 provided in the embodiment of the present application can implement each process implemented by the method embodiment of FIG. 6 and achieve the same technical effect. To avoid repetition, it will not be described here.
- the embodiment of the present application further provides a communication device 900, including a processor 901 and a memory 902, wherein the memory 902 stores a program or instruction that can be run on the processor 901.
- the communication device 900 is a terminal
- the program or instruction is executed by the processor 901 to implement the various steps of the above-mentioned channel state information determination method embodiment, and can achieve the same technical effect.
- the communication device 900 is a network side device
- the program or instruction is executed by the processor 901 to implement the various steps of the above-mentioned channel state information determination method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
- the embodiment of the present application also provides a terminal, including a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the steps in the method embodiment shown in Figures 2 to 4.
- This terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to the terminal embodiment and can achieve the same technical effect.
- Figure 10 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.
- the terminal 1000 includes but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009 and at least some of the components of a processor 1010.
- the terminal 1000 can also include a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected to the processor 1010 through a power management system, so as to implement functions such as charging, discharging, and power consumption management through the power management system.
- a power supply such as a battery
- the terminal structure shown in FIG10 does not constitute a limitation on the terminal, and the terminal can include more or fewer components than shown in the figure, or combine certain components, or arrange components differently, which will not be described in detail here.
- the processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 1010.
- the radio frequency unit 1001 is also used to receive first indication information sent by a network side device; wherein the first indication information includes at least one of the following: a pattern of CSI-RS resources, the pattern of the CSI-RS resources including M1 first ports in the horizontal dimension, M2 first ports in the vertical dimension, and N1 second ports in the horizontal dimension, and N2 second ports in the vertical dimension; a first mapping relationship, wherein the first mapping relationship is configured with a mapping relationship between N1 second ports and M1 first ports, or a mapping relationship between N2 second ports and M2 first ports.
- the first mapping relationship is indicated by at least one of the following: a bitmap; second indication information, used to indicate that one of a plurality of mapping relationships pre-configured or agreed upon by protocol is the first mapping relationship.
- the bitmap includes at least one of the following: a first bitmap, wherein the length of the first bitmap is N1 and is used to indicate the mapping relationship between the second port and the first port in the horizontal dimension; a second bitmap, wherein the length of the second bitmap is N2 and is used to indicate the mapping relationship between the second port and the first port in the vertical dimension; a third bitmap, wherein the length of the third bitmap is N1*N2, and the third bitmap is used to indicate the mapping relationship between the second port and the first port in each polarized antenna group in the dual-polarized antenna group, or the third bitmap is used to indicate the mapping relationship between the second port and the first port in a specific polarized antenna group in the dual-polarized antenna group; a fourth bitmap, wherein the length of the fourth bitmap is n1*n2*2, and the fourth bitmap is used to indicate the second port in the dual-polarized antenna group. and the mapping relationship of the first port.
- a first bitmap wherein the length of the first bitmap
- the processor 1010 is further configured to, when the CSI-RS is received at a specific time in the CSI-RS resource, determine that the first mapping relationship is effective or activated.
- the first mapping relationship is related to first capability information of the terminal; wherein, the first capability information is used to indicate that when the terminal is configured with a first number of second ports, the terminal supports a second number of first ports, and a mapping relationship or ratio relationship between the second number of first ports and the first number of second ports.
- the spatial domain filter coefficient is obtained through at least one of the following: obtained based on measurement of a first downlink RS; wherein the first downlink RS is the CSI-RS, and the CSI-RS is used by the terminal to obtain the CSI-RS; obtained based on measurement of a second downlink RS, wherein the second downlink RS is a multi-port RS, and the second downlink RS is different from the CSI-RS; obtained based on measurement of a third downlink RS, wherein the third downlink RS is a precoded RS that has undergone beamforming or delay compensation; and receiving the spatial domain filter coefficient sent by the network side device.
- the TCI state quasi-co-site reference signal corresponding to the CSI-RS includes the second downlink RS or the third downlink RS, or the CSI-RS and the second downlink RS or the third downlink RS have the same TCI state quasi-co-site reference signal.
- the number of CSI processing units associated with the CSI report is related to first information, and the first information is a mathematical ratio of the number of the second ports to the first port; the number of CSI processing units associated with the CSI report is determined based on the number of the first CSI processing units and a predetermined value, and the first CSI
- the processing unit is a CSI unit used by the terminal when determining the CSI corresponding to the N second ports based on the CSI-RS corresponding to the N second ports; the target parameters configured in the CSI-RS resources associated with the CSI report are related to the second port, wherein the target parameters include a power control offset.
- the embodiment of the present application also provides a network side device.
- the network side device 1100 includes: an antenna 1101, a radio frequency device 1102, a baseband device 1103, a processor 1104 and a memory 1105.
- the antenna 1101 is connected to the radio frequency device 1102.
- the radio frequency device 1102 receives information through the antenna 1101 and sends the received information to the baseband device 1103 for processing.
- the baseband device 1103 processes the information to be sent and sends it to the radio frequency device 1102.
- the radio frequency device 1102 processes the received information and sends it out through the antenna 1101.
- the baseband device 1103 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 11, one of the chips is, for example, a baseband processor, which is connected to the memory 1105 through a bus interface to call the program in the memory 1105 and execute the network device operations shown in the above method embodiment.
- the network side device 1100 of the embodiment of the present application also includes: instructions or programs stored in the memory 1105 and executable on the processor 1104.
- the processor 1104 calls the instructions or programs in the memory 1105 to execute the method executed by each module shown in Figure 8 and achieves the same technical effect. To avoid repetition, it will not be repeated here.
- An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored.
- a program or instruction is stored.
- the program or instruction is executed by a processor, each process of the above-mentioned channel state information determination method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.
- the processor is the processor in the terminal described in the above embodiment.
- the readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.
- the readable storage medium may be a non-transient readable storage medium.
- An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned channel state information determination method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
- the processors mentioned in the embodiments of the present application may include general-purpose processors, special-purpose processors, etc., such as central processing units (CPU), microprocessors, digital signal processors (DSPs), etc.
- DSP Processor
- AI Artificial Intelligent
- GPU Graphics Processing Unit
- ASIC Application Specific Integrated Circuit
- NP Network Processor
- FPGA Field Programmable Gate Array
- the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.
- An embodiment of the present application further provides a computer program/program product, which is stored in a storage medium.
- the computer program/program product is executed by at least one processor to implement the various processes of the above-mentioned channel state information determination method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
- An embodiment of the present application also provides a wireless communication system, including: a terminal and a network side device, wherein the terminal can be used to implement the various processes of the above-mentioned channel state information determination method embodiments 200-400, and the network side device can be used to implement the various processes of the above-mentioned channel state information determination method embodiment 600.
- the above-mentioned processes can achieve the same technical effect, and to avoid repetition, they will not be repeated here.
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Abstract
本申请公开了一种信道状态信息的确定方法、终端及网络侧设备,属于通信技术领域,本申请实施例的信道状态信息的确定方法包括:终端基于与M个第一端口对应的信道状态信息参考信号CSI-RS,确定N个第二端口对应的CSI;向网络侧设备发送所述N个第二端口对应的CSI;其中,所述N个第二端口是网络侧设备为所述终端配置的CSI-RS端口;所述M个第一端口为所述N个第二端口中的部分端口。
Description
本申请要求于2023年09月01日提交中国专利局、申请号为202311128017.0、发明名称为“信道状态信息的确定方法、终端及网络侧设备”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
本申请属于通信技术领域,具体涉及一种信道状态信息的确定方法、终端及网络侧设备。
相关技术中,为了保证未来商用的厘米波频段7GHz~15GHz和低频3.5GHz有可比拟的网络覆盖,在已商用大规模天线设计基础上,匹配新频段的超大规模天线会被引入。
其中,超大规模天线(Extremely Large Aperture Array,ELAA)最主要的特征是拥有庞大的天线阵子以及可能引入更多的射频链路来提高无线信道空域的采样率,因此未来信道状态信息参考信号(Channel State Information reference signal,CSI-RS)端口设计需要考虑支持更大的端口。例如,目前5G新空口(New Radio,NR)协议用于测量下行信道的CSI-RS最大端口(port)数为32,未来最大端口数可能需要扩展到48、64、96,甚至128等,那么,通过大规模的CSI-RS端口测量全信道的CSI,必然会带来高额的CSI-RS资源开销,影响网络性能。
发明内容
本申请实施例提供一种信道状态信息的确定方法、终端及网络侧设备,能够降低全信道的CSI确定时的CSI-RS资源开销,确保网络性能。
第一方面,提供了一种信道状态信息的确定方法,包括:终端基于与M个第一端口对应的信道状态信息参考信号CSI-RS,确定N个第二端口对应的CSI;向网络侧设备发送所述N个第二端口对应的CSI;其中,所述N个第二端口是网络侧设备为所述终端配置的CSI-RS端口,所述M个第一端口为所述N个第二端口中的部分端口。
第二方面,提供了一种信道状态信息的确定方法,网络侧设备接收终端发送的N个第二端口对应的信道状态信息CSI;其中,所述N个第二端口对应的CSI是基于与M个第一端口对应的信道状态信息参考信号CSI-RS确定,所述N个第二端口是所述网络侧设备为所述终端配置的CSI-RS端口,所述M个第一端口为所述N个第二端口中的部分端口。
第三方面,提供了一种信道状态信息的确定装置,包括:确定模块,确定模块,用于基于与M个第一端口对应的信道状态信息参考信号CSI-RS,确定N个第二端口对应的CSI;发送模块,用于向网络侧设备发送所述N个第二端口对应的CSI;其中,所述N个第二端口是网络侧设备为所述终端配置的CSI-RS端口,所述M个第一端口为所述N
个第二端口中的部分端口。
第四方面,提供了一种信道状态信息的确定装置,包括:接收模块,用于网络侧设备接收终端发送的N个第二端口对应的信道状态信息CSI;
其中,所述N个第二端口对应的CSI是基于与M个第一端口对应的信道状态信息参考信号CSI-RS确定,所述N个第二端口是所述网络侧设备为所述终端配置的CSI-RS端口,所述M个第一端口为所述N个第二端口中的部分端口。
第五方面,提供了一种终端,该终端包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如第一方面所述的方法的步骤。
第六方面,提供了一种终端,包括处理器及通信接口,其中,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现如第一方面所述的方法的步骤。
第七方面,提供了一种网络侧设备,该网络侧设备包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如第二方面所述的方法的步骤。
第八方面,提供了一种网络侧设备,包括处理器及通信接口,其中,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现如第二方面所述的方法的步骤。
第九方面,提供了一种可读存储介质,所述可读存储介质上存储程序或指令,所述程序或指令被处理器执行时实现如第一方面所述的方法的步骤,或者实现如第二方面所述的方法的步骤。
第十方面,提供了一种无线通信系统,包括:终端及网络侧设备,所述终端可用于执行如第一方面所述的方法的步骤,所述网络侧设备可用于执行如第二方面所述的方法的步骤。
第十一方面,提供了一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现如第一方面所述的方法的步骤,或实现如第二方面所述的方法的步骤。
第十二方面,提供了一种计算机程序/程序产品,所述计算机程序/程序产品被存储在存储介质中,所述程序/程序产品被至少一个处理器执行以实现如第一方面所述的方法的步骤,或实现如第二方面所述的方法的步骤。
在本申请实施例中,终端通过基于与M个第一端口对应的CSI-RS,确定N个第二端口对应的CSI,其中,所述N个第二端口是网络侧设备为所述终端配置的CSI-RS端口、且所述M个第一端口为所述N个第二端口中的部分端口。由此,通过部分CSI-RS端口的CSI-RS确定全CSI-RS端口的CSI的方式,能够降低全信道CSI确定时的CSI-RS资源开销,有效确保了网络性能。
图1是本申请一示例性实施例提供的无线通信系统的结构示意图。
图2是本申请一示例性实施例提供的信道状态信息的确定方法的流程示意图之一。
图3是本申请一示例性实施例提供的信道状态信息的确定方法的流程示意图之二。
图4是本申请一示例性实施例提供的信道状态信息的确定方法的流程示意图之三。
图5a是本申请一示例性实施例提供的天线面板的示意图之一。
图5b是本申请一示例性实施例提供的天线面板的示意图之二。
图5c是本申请一示例性实施例提供的天线面板的示意图之三。
图6是本申请一示例性实施例提供的信道状态信息的确定方法的流程示意图之四。
图7是本申请一示例性实施例提供的信道状态信息的确定装置的结构示意图之一。
图8是本申请一示例性实施例提供的信道状态信息的确定装置的结构示意图之二。
图9是本申请一示例性实施例提供的通信设备的结构示意图。
图10是本申请一示例性实施例提供的终端的结构示意图。
图11是本申请一示例性实施例提供的网络侧设备的结构示意图。
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所获得的所有其他实施例,都属于本申请保护的范围。
本申请的术语“第一”、“第二”等是用于区别类似的对象,而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换,以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施,且“第一”、“第二”所区别的对象通常为一类,并不限定对象的个数,例如第一对象可以是一个,也可以是多个。此外,本申请中的“或”表示所连接对象的至少其中之一。例如“A或B”涵盖三种方案,即,方案一:包括A且不包括B;方案二:包括B且不包括A;方案三:既包括A又包括B。字符“/”一般表示前后关联对象是一种“或”的关系。
本申请的术语“指示”既可以是一个直接的指示(或者说显式的指示),也可以是一个间接的指示(或者说隐含的指示)。其中,直接的指示可以理解为,发送方在发送的指示中明确告知了接收方具体的信息、需要执行的操作或请求结果等内容;间接的指示可以理解为,接收方根据发送方发送的指示确定对应的信息,或者进行判断并根据判断结果确定需要执行的操作或请求结果等。
值得指出的是,本申请实施例所描述的技术不限于长期演进型(Long Term Evolution,LTE)/LTE的演进(LTE-Advanced,LTE-A)系统,还可用于其他无线通信系统,诸如码分多址(Code Division Multiple Access,CDMA)、时分多址(Time Division Multiple Access,TDMA)、频分多址(Frequency Division Multiple Access,FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access,OFDMA)、单载波频分多址(Single-carrier Frequency-Division Multiple Access,SC-FDMA)或其他系统。本申请实
施例中的术语“系统”和“网络”常被可互换地使用,所描述的技术既可用于以上提及的系统和无线电技术,也可用于其他系统和无线电技术。以下描述出于示例目的描述了NR系统,并且在以下大部分描述中使用NR术语,但是这些技术也可应用于NR系统以外的系统,如第6代(6th Generation,6G)通信系统。
图1示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括终端11和网络侧设备12。其中,终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)、笔记本电脑、个人数字助理(Personal Digital Assistant,PDA)、掌上电脑、上网本、超级移动个人计算机(Ultra-mobile Personal Computer,UMPC)、移动上网装置(Mobile Internet Device,MID)、增强现实(Augmented Reality,AR)、虚拟现实(Virtual Reality,VR)设备、机器人、可穿戴式设备(Wearable Device)、飞行器(flight vehicle)、车载设备(Vehicle User Equipment,VUE)、船载设备、行人终端(Pedestrian User Equipment,PUE)、智能家居(具有无线通信功能的家居设备,如冰箱、电视、洗衣机或者家具等)、游戏机、个人计算机(Personal Computer,PC)、柜员机或者自助机等终端侧设备。可穿戴式设备包括:智能手表、智能手环、智能耳机、智能眼镜、智能首饰(智能手镯、智能手链、智能戒指、智能项链、智能脚镯、智能脚链等)、智能腕带、智能服装等。其中,车载设备也可以称为车载终端、车载控制器、车载模块、车载部件、车载芯片或车载单元等。需要说明的是,在本申请实施例并不限定终端11的具体类型。网络侧设备12可以包括接入网设备或核心网设备,其中,接入网设备也可以称为无线接入网(Radio Access Network,RAN)设备、无线接入网功能或无线接入网单元。接入网设备可以包括基站、无线局域网(Wireless Local Area Network,WLAN)接入点(Access Point,AS)或无线保真(Wireless Fidelity,WiFi)节点等。其中,基站可被称为节点B(Node B,NB)、演进节点B(Evolved Node B,eNB)、下一代节点B(the next generation Node B,gNB)、新空口节点B(New Radio Node B,NR Node B)、接入点、中继站(Relay Base Station,RBS)、服务基站(Serving Base Station,SBS)、基收发机站(Base Transceiver Station,BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set,BSS)、扩展服务集(Extended Service Set,ESS)、家用B节点(home Node B,HNB)、家用演进型B节点(home evolved Node B)、发送接收点(Transmission Reception Point,TRP)或所述领域中其他某个合适的术语,只要达到相同的技术效果,所述基站不限于特定技术词汇,需要说明的是,在本申请实施例中仅以NR系统中的基站为例进行介绍,并不限定基站的具体类型。
此外,为便于对本申请提供的技术方案进行理解,在此对本申请中涉及的几个技术特征进行简单介绍。
(1)CSI-RS图样(pattern)
38.211协议里定义了CSI-RS pattern的设计图样,目前CSI-RS可支持的端口数为{1,2,4,8,12,16,24,32},相同端口数又有不同的pattern设计匹配不同的信道类型。对于一个CSI-RS资源(resource),不同的端口之间需要保证正交,一般通过时分、频分、或
者在频域上通过扩频甚至联合时频二维扩频保证正交。对于单端口的CSI-RS,一般用于信道特征跟踪,此时也叫跟踪参考信号(Tracking RS,TRS),终端基于多个TRS resources可以估计定时偏差、频率偏差以及无线信道的多径谱和多普勒谱,这些谱信息的获得,可以辅助提升用于解调的DMRS信道估计性能。
(2)准共址(Quasi Co-Location,QCL)类型(Type)
QCL是指某个天线端口上的符号所经历的信道大尺度参数可以从另一个天线端口上的符号所经历的信道推断出来(或者理解为两者参数特性是相同的)。其中的大尺度参数包括平均时延(average delay)、时延扩展(delay spread)、多普勒偏移(Doppler shift)、多普勒扩展(Doppler spread)以及空间接收参数(Spatial Rx parameter)等。
目前,5G NR协议里一共定义了4种QCL type:
QCL Type A:多普勒偏移,多普勒扩展,平均时延,时延扩展;
QCL Type B:多普勒偏移,多普勒扩展;
QCL Type C:平均时延,多普勒偏移;
QCL Type D:空间接收参数。
其中,QCL type A、QCL type B和QCL type C可用于所有的频段,而QCL type D只用于毫米波高频段。
基于此,下面结合附图,通过一些实施例及其应用场景对本申请实施例提供的技术方案进行详细地说明。
如图2所示,为本申请一示例性实施例提供的信道状态信息的确定方法200的流程示意图,该方法200可以但不限于由终端执行,具体可由安装于终端中的硬件或软件执行。本实施例中,所述方法200至少可以包括如下步骤。
S210,终端基于与M个第一端口对应的CSI-RS,确定N个第二端口对应的CSI。
其中,所述N个第二端口是所述网络侧设备为所述终端配置的CSI-RS端口(也可理解为CSI上报指定关联的端口),所述M个第一端口为所述N个第二端口中的部分端口。也就是说,在本实施例中,所述第一端口可以看做实际接收的CSI-RS端口(或CSI-RS导频端口)、第二端口可以看做为了CSI上报需要而定义或配置的CSI-RS端口。在此情况下,所述终端通过N个CSI-RS端口中的部分端口对应的CSI-RS确定(或推导、估算)出N个CSI-RS端口的CSI,由此,能够避免如相关技术中需要针对N个CSI-RS端口中每个CSI-RS端口进行信道测量以获取全信道CSI时存在的CSI-RS资源开销大的问题,有效确保了网络性能。
例如,假设网络侧设备配置了N(如32、64、128等)个CSI-RS端口,那么,相对于相关技术中网络侧设备需要在N个CSI-RS端口发送CSI-RS,以及所述终端则需要基于N个CSI-RS端口接收所述CSI-RS并测量,继而根据测量结果得到各CSI-RS端口对应的CSI。在本实施例中,网络侧设备仅需要在M(如32、16等)个CSI-RS端口(上述第一端口)上发送CSI-RS,以及所述终端则需基于M个CSI-RS端口接收所述CSI-RS并测量,继而根据测量结果确定M个CSI-RS端口对应的信道估计信息(或信道估计结
果)等,最后根据M个CSI-RS端口对应的信道估计信息等确定N个CSI-RS端口(上述第二端口)对应的CSI,由此,能够避免相关技术中需要进行的(N-M)个CSI-RS端口上的CSI-RS资源开销,确保了网络性能。
当然,对于前述的所述终端基于与M个第一端口对应的CSI-RS确定N个第二端口对应的CSI,所述M个第一端口与所述N个第二端口之间的映射关系(如数量、位置)可以协议约定、网络侧设备配置等方式实现,在此不做限制。
S220,向网络侧设备发送所述N个第二端口对应的CSI。
其中,所述终端可基于协议预约定、高层配置等方式实现CSI报告配置(CSI-ReportConfig)进行所述N个第二端口对应的CSI的发送。另外,所述终端通过所述N个第二端口对应的CSI的发送,能够使得所述网络侧设备基于所述N个第二端口对应的CSI进行预编码矩阵的确定等,在此不做限制。
本实施例中,终端通过基于与M个第一端口对应的CSI-RS,确定N个第二端口对应的CSI,其中,所述N个第二端口是网络侧设备为所述终端配置的CSI-RS端口,所述M个第一端口为所述N个第二端口中的部分端口。由此,通过部分CSI-RS端口对应的CSI-RS确定全CSI-RS端口的CSI的方式,能够降低全信道CSI确定时的CSI-RS资源开销,有效确保了网络性能。
如图3所示,为本申请一示例性实施例提供的信道状态信息的确定方法300的流程示意图,该方法300可以但不限于由终端执行,具体可由安装于终端中的硬件或软件执行。本实施例中,所述方法300至少可以包括如下步骤。
S310,终端基于与M个第一端口对应的信道状态信息参考信号CSI-RS,确定N个第二端口对应的CSI。
S320,向网络侧设备发送所述N个第二端口对应的CSI。
其中,所述N个第二端口是网络侧设备为所述终端配置的CSI-RS端口,所述M个第一端口为所述N个第二端口中的部分端口。
可以理解,S310-S320的实现过程可参照前述方法实施例200中的相关描述,当然,除了参照前述方法实施例200中的相关描述之外,作为一种可能的实现方式,所述第一端口在同一极化方向上可映射为M1个水平维度的端口和M2个垂直维度的端口,所述第二端口在同一极化方向上也可映射为N1个水平维度的端口和N2个垂直维度的端口,M1小于或等于N1,或,M2小于或等于N2,M1、M2、N1、N2均为大于0的整数,M=M1*M2*q,N=N1*N2*q,其中,q与天线极化类型相关,例如,对于双极化天线面板(Antenna panel),M=M1*M2*2,N=N1*N2*2。
在此情况下,在一种实现方式中,为了实现降低CSI-RS资源开销情形下的N个第二端口对应的CSI确定方案,在本实施例中,所述终端可以接收网络侧设备发送的第一指示信息,且所述第一指示信息中用于指示天线面板上离散分布的端口信息,使得所述终端可根据第一指示信息指示的第一端口的数量、第二端口的数量、第一端口与第二端口之间的映射关系,实现N个第二端口上的CSI的确定。
可选的,所述第一指示信息可通过高层信令传输,其中可以包括或指示但不限于以下CSI-RS资源的图样、第一映射关系中的至少一项。
所述CSI-RS资源的图样可以是但不限于CSI报告配置(CSI-ReportConfig)中关联的CSI-RS资源的图样。其中,所述CSI-RS资源的图样中可以包括但不限于水平维度的所述第一端口的数量(如M1个)、垂直维度的所述第一端口的数量(如M2个),以及水平维度的所述第二端口的数量(如N1个)、垂直维度的所述第二端口的数量(如N2个)。
在一些实施例中,所述终端在进行CSI确定时所采用的第一端口的数量(如M1、M2)、第二端口的数量(如N1、N2),可以根据所述CSI-RS资源的图样中配置的第一端口的数量、第二端口的数量确定,在此不做限制。
所述第一映射关系中配置有N1个所述第二端口与M1个第一端口之间的映射关系,或N2个所述第二端口与M2个所述第一端口之间的映射关系。其中,“N1个所述第二端口与M1个第一端口之间的映射关系”可以理解为从N1个所述第二端口中选择所述M1个第一端口的选则映射关系,如所述M1个第一端口在所述N1个第二端口中的位置等,对应的,“N2个所述第二端口与M2个所述第一端口之间的映射关系”也可以理解为:从N2个所述第二端口中选择M2个第二端口的选择映射关系,如所述M2个第一端口在所述N2个第二端口中的位置等。
可以理解,通过前述CSI-RS资源的图样中的端口数量以及第一映射关系的指示,能够使得所述终端清楚所述网络侧设备发送CSI-RS的端口数量、位置,从而实现CSI-RS(如CSI-RS)的准确接收、测量的同时,还能使得所述终端能够准确的基于M个第一端口对应的CSI-RS确定N个第二端口对应的CSI。
当然,对于前述第一指示信息,如果所述第一指示信息中仅指示了所述CSI-RS资源的图样或第一映射关系中的一种,那么,剩余的一种信息可以由协议约定、预配置等方式配置给所述终端,以使得所述终端能够实现CSI-RS的接收、N个第二端口对应CSI的确定。
一种实现方式,对于所述网络侧设备指示所述第一映射关系的情形,所述第一映射关系可通过但不限于位图(Bitmap)、第二指示信息中的至少一项指示。
其中,所述位图可以包括但不限于第一位图、第二位图、第三位图、第四位图中的至少一项。
所述第一位图的长度为N1、且用于指示水平维度的所述第二端口和第一端口之间的映射关系。
所述第二位图的长度为N2、且用于指示垂直维度的第二端口和第一端口之间的映射关系。
可以理解,对于前述第一位图和第二位图,假设所述网络侧设备同时指示有第一位图和第二位图,那么,假设网络侧设备(如基站)的天线pattern中,水平维度有N1=8个第二端口,垂直维度有N2=4个第二端口,总的第二端口数为8*4*2=64,那么,本申
请中为了降低实际CSI-RS resource开销,可确定4*2*2=16个实际发送端口(上述第一端口)。例如所述网络侧设备在水平维度只在偶数端口索引上发送,那么实际发送端口[0,2,4,6],对应M1=4,在垂直维度也只在偶数端口索引上发送,那么实际发送端口[0,2],对应M2=2。也就是第一位图、第二位图可分别表示为[1 0 1 0 1 0 1 0]和[1 0 1 0],其中,“1”表示发送,“0”表示不发送。
所述第三位图的长度为N1*N2。本实施例中,对于第三位图,所述第三位图可以用于指示双极化天线组中每个极化天线组中的第二端口和第一端口之间的映射关系,也就是说,两个极化方向上的端口图样是共用的。
或,所述第三位图用于指示双极化天线组中的特定极化天线组中的第二端口和第一端口的映射关系。也就是说,所述第三位图指示只适用于其中一种极化天线组,另一种极化天线组上默认所有的第二端口和第一端口一一映射。可选的,所述特定极化天线组可以通过协议约定、高层指示等方式确定,在此不做限制。
所述第四位图长度为N1*N2*2,所述第四位图用于指示双极化天线组中的第二端口和第一端口的映射关系。例如,所述第四位图指示为1的bit表示对应的第二端口被激活看做第一端口,指示为0表示对应的第二端口不能映射到第一端口。
值得注意的是,相对于方案前述提供几种位图指示方式,所述第三位图和所述第四位图在信令开销上多一点,但是能够更灵活的指示任意的选择映射关系。
所述第二指示信息用于指示预配置或协议约定的多种映射关系中的一个映射关系为所述第一映射关系。其中,所述第一映射关系可以是通过第二指示信息中不同比特(bit)指示不同的组合状态,例如,假设所述预配置或协议约定的多种映射关系如表1所示。那么,所述网络侧设备可通过第二指示信息指示不同的第一映射关系。另,表1中所述的索引为端口索引。
本申请为了说明简单,前述仅列举了1个CSI-RS resource的配置。但不失一般性,对于1个CSI报告(report)关联多个CSI-RS resources的情形,所述第一映射关系可以共用于与CSI report关联的所有CSI-RS resources,或者针对不同的CSI-RS resources可配置不同的所述映射关系,在此不做限制。
值得注意的是,为了提高本申请提供的CSI的确定方案的应用灵活性,对于本申请中提及的所述第一映射关系,其激活或生效时刻可由协议约定、高层配置等方式实现。例如,如果CSI-RS(如CSI-RS)是在所述CSI-RS资源中配置的特定时刻(如周期性的某个或某几个接收时刻)上接收到的参考信号的情况下,可确定所述第一映射关系生效或激活,换言之,在所述CSI-RS资源中的特定时刻上接收到CSI-RS情况下,确定所述第一映射关系生效或激活。
例如,所述CSI-RS被配置为周期发送,且通过高层信令指示在某些特定时刻上,所述第一映射关系生效或激活,在除特定时刻的其他发送时刻上,所述第一映射关系生效或激活失效或处于非激活态,由此,能够使得在特定时刻上,节省CSI-RS端口占用的时频资源开销,如终端可以基于特定时刻上的基于部分CSI-RS端口对应CSI-RS确定全
CSI-RS端口对应的CSI。
表1
另一种实现方式中,所述第一映射关系与所述终端的第一能力信息相关;其中,所述第一能力信息用于指示所述终端配置有第一数量个第二端口的情况下,所述终端可支持第二数量个第一端口的能力,以及所述第二数量个第一端口与所述第一数量个第二端口之间的映射关系或比值大小(或比值关系)。例如,对于前述的“第一映射关系与所述终端的第一能力信息相关”可以理解为所述第一映射关系可以根据所述第一能力信息确定,由此,能够确保所述第一映射关系与所述终端的能力匹配,进而使得终端基于与M个第一端口对应的CSI-RS确定的N个第二端口的CSI的精确性。
值得注意的是,所述第一映射关系可以与所述第一能力信息所指示的第一端口的数量、第二端口的数量、映射关系或比值关系一致或不一致,在此不做限制。
一种可能的实现方式中,所述终端还可向所述网络侧设备发送第二能力信息,以用于所述网络侧设备清楚所述终端在任意时域单元(如时隙(slot))内能够处理的激活的多个CSI-RS总和的最大端口数。
可选的,所述第二能力信息用于指示以下11)-13)中的至少一项。
11)最大端口数,其中,所述最大端口数是通过对所述终端在任意时域单元(如时隙(slot))内处理的、且与CSI报告关联的所有激活CSI-RS资源中的第一端口或第二端口进行计数得到。
其中对于11),激活的多个CSI-RS总和的最大端口数(其中多个CSI-RS可能关联不同的CSI Report或者同一CSI-RS关联不同的CSI Report)的计数一种实现方式是:如
果对应的一个CSI-RS的端口配置了第一端口则按照第一端口数量M计数;或者尽管配置了第一端口,但是按照CSI上报关联的第二端口数量N计数。
12)所述终端在任意时域单元内处理的、且与CSI报告关联的所有激活CSI-RS资源中的第一端口的数量。
对于12)终端可能会上报只基于所有激活的CSI-RS resources配置的第一端口数量计数可支持的最大端口数量。
13)所述终端在任意时域单元内处理的、且与CSI报告关联的所有激活CSI-RS资源中的第二端口的数量。
对于13)终端可能会上报只基于所有激活的CSI-RS resources配置的第二端口数量计数可支持的最大端口数量。
基于前述CSI确定方法300的描述,下面结合示例对其实现过程进行示例说明,内容如下。
示例1
终端接收第一指示信息(如CSI report信令),该CSI report信令中配置CSI-resourceConfig,其中CSI-resource中会指示关联的CSI-RS resource ID。同时CSI report信令也会配置码本(codebook)上报对应的格式,其中包括基于CSI-RS resource计算CSI时,对应的基站天线pattern,例如水平维度CSI-RS端口(上述第二端口)的个数N1和垂直维度CSI-RS端口(上述第二端口)的个数N2。对于双极化天线阵列,总的第二端口数为N1*N2*2。
在此情况下,所述终端在计算第二端口的CSI的过程中需要参考N1和N2的数值,例如,在计算CSI中的码本的空域信息时,当通过离散傅里叶变换(Discrete Fourier Transform,DFT)基表征空域波束时,N1和N2分别对应水平维度和垂直维的DFT基长度。
网络侧设备同时也配置codebook关联的CSI-RS resource的实际发送端口(上述第一端口)的个数,例如水平维度的CSI-RS实际端口的个数M1和垂直维度的CSI-RS端口的个数M2,那么,对于双极化天线阵列,总的第二端口的数量为n1*n2*2,而本申请为了降低CSI-RS resource开销,水平维度的第一端口的数量M1小于或等于N1,或者,垂直维度的第一端口的数量M2小于或等于N2。
最后,所述终端在CSI-RS resource的第一端口上接收CSI-RS并进行信道测量,得到信道测量信息,可记作CSI-RS,同时基于第一端口对应的CSI-RS获得该CSI-RS resource的第二端口上的测量信道信息,并根据所述第二端口上的测量信道信息和CSI report类型计算第二端口对应的CSI。例如对于物理下行共享信道(Physical downlink shared channel,PDSCH)基于codebook的发送公式,如式(1)所示,可以得到CSI中的码本的空域信息,这里p为第二端口的数量。
本申请实施例中,终端通过在空域上离散分布CSI-RS端口设计,并通过第一指示信息进行CSI-RS资源的图样、第一映射关系的指示,能够进一步提高所述终端确定N个第二端口对应的CSI的准确性。
如图4所示,为本申请一示例性实施例提供的信道状态信息的确定方法400的流程示意图,该方法400可以但不限于由终端执行,具体可由安装于终端中的硬件或软件执行。本实施例中,所述方法400至少可以包括如下步骤。
S410,终端基于与M个第一端口对应的CSI-RS,确定N个第二端口对应的CSI。
S420,向网络侧设备发送所述N个第二端口对应的CSI。
其中,所述N个第二端口是网络侧设备为所述终端配置的CSI-RS端口,所述M个第一端口为所述N个第二端口中的部分端口。
可以理解,S410-S420的实现过程可参照前述方法实施例200或300的相关描述,当然,除了前述方法实施例200或300的相关描述之外,作为一种可能的实现方式,请再次参阅图4,S410中的实现过程可以包括图4所示的S411,内容如下。
S411,根据所述M个第一端口对应的CSI-RS以及空域滤波系数,估算得到所述N个第二端口对应的CSI。
其中,所述空域滤波系数的获取方式可以有多种,例如,在本实施例中,所述空域滤波系数可以通过但不限于以下方式1至方式4中的至少一项获取。
方式1:所述终端基于第一下行RS测量得到;其中,所述第一下行RS为所述CSI-RS或者所述第一下行RS与所述CSI Report关联,其也可以理解为终端基于所述CSI-RS自身获取空域滤波系数。
可以理解,所述终端基于第一下行RS测量得到所述空域滤波系数的过程可以包括:所述终端通过测量所述第一下行RS得到空域相关信息(如空域相关性、空域谱)或无线信道在端口间的互相关性矩阵,其中,对于所述空域相关信息,所述终端可基于所述空域相关信息确定所述互相关性矩阵,然后,基于所述互相关性矩阵以及wiener滤波算法中的最小均方误差(Minimum Mean Square Error,MMSE)准则获得所述空域滤波系数W_filer。例如下式(2)所示。
W_filer=Rn,m*inv(Rm,m+δ2*I) (2)
W_filer=Rn,m*inv(Rm,m+δ2*I) (2)
式(2)中,Rm,m表示所述终端用于接收所述第一下行RS的CSI-RS端口之间的互相关矩阵,Rm,m的大小为m×m,m取值取决于终端实现;Rn,m表示待估计的CSI-RS端口与接收所述第一下行RS的CSI-RS端口之间的互相关矩阵,Rn,m的大小为n×m,并且n取值也取决于终端实现;δ2表示所述终端侧接收机里的平均干扰噪声功率,I表示单位矩阵。可以理解的,在方式1中,由于所述第一下行RS为所述CSI-RS,因此,接收所述第一下行RS的CSI-RS端口为所述第一端口,待估计的CSI-RS端口为所述第
二端口。
示例性的,如图5a所示,网络侧设备(如基站)上的一个天线面板上只有一半第一端口和第二端口一一映射(对应图5a里左半部分),另一半部分第一端口是第二端口的子集,在水平和垂直方向采用间隔一一映射(其中实黑部分表示逻辑发送端口和实际发送端口一一映射;虚黑部分表示逻辑发送端口关闭,没有和实际发送端口映射)。这里,实际发送端口的数量就是第一端口数量,逻辑发送端口的数量就是第二端口数量。那么,所述终端可基于左侧4×4天线端口发送的CSI-RS(上述第一下行RS)对应的无线信道在端口间的互相关性矩阵,计算出天线面板上的水平维度或者垂直维度或者水平垂直二维联合的空域滤波系数,然后基于第一端口(如实黑部分)对应的CSI-RS测量得到第一端口的信道测量信息(如信道估计信息等),进而结合计算得到的空域滤波系数滤出第二端口对应的信道测量信息,最后基于第二端口对应的信道测量信息进一步获得CSI上报信息,即CSI。不失一般性,左侧天线部分和右侧天线部分可以对应基站不同的天线面板,两个面板朝向相同、可具有相同的空域滤波系数,但是两个面板有一定的天线间距。
除此之外,对于方式1,当所述第一下行RS为所述CSI-RS时,所述CSI-RS配置了周期发送,高层信令指示在某些特定时刻上,所述CSI-RS的端口配置数量对应所述第二端口,在其他发送时刻上,所述CSI-RS的端口配置数量对应所述第一端口。终端可以基于特定时刻上的CSI-RS全信道信息获得空域滤波系数,进而在其他发送时刻上基于CSI-RS通过获得的空域滤波系数推导出全信道信息,即CSI。
另外,当终端基于其中一个CSI-RS resource计算出空域滤波系数用于对其他CSI-RS resources进行空域滤波时,所述CSI-RS resources有相同的QCL关系。
方式2:所述终端基于第二下行RS测量得到,如所述终端可根据第二下行RS测量得到空域相关信息(如空域相关性、空域谱)或无线信道对应的端口间的互相关性矩阵,再基于所述空域相关信息确定所述空域滤波系数。
其中,所述第二下行RS可以为网络侧设备单独配置的多端口的RS。可选的,所述第二下行RS可以基于5G NR协议中的TRS(Tracking Reference Signal)进一步扩展得到,例如所述第二下行RS为配置了多端口的TRS。终端基于TRS不仅仅获得无线信道特征QCL type A、QCL type B、QCL type C、或QCL type D,还可以获得基站发送空间特征,这里根据空间特征可以推导出空间滤波系数。
可选的,所述第二下行RS对应的端口图样可以为所述第二端口图样的子集或全集。其中,所述全集表示所述第二下行RS的实际发送端口和所述第二端口在相同的极化方向上是一一映射关系。所述子集表示所述第二下行RS的实际发送端口与所述第二端口在相同的极化方向上是部分连续一一映射关系,其中,所述部分连续一一映射关系通过网络高层信令配置等方式指示。例如,网络侧设备可以配置一个第二下行RS对应的时频资源和发送周期,并且对应的天线发送端口图样pattern如图5b所示。同时,网络侧设备还可通过第一指示信息配置CSI-Report中关联的第二端口和第一端口如图5c所示。
可以理解的是,终端基于第二下行RS确定空域滤波系数的相关过程,可参考前述方
式1中的相关描述,在此不再赘述。
一种实现方式,在所述终端基于前述的第二下行RS测量得到所述空域滤波系数的情况下,所述CSI-RS对应的传输配置指示(Transmission Configuration Indicator,TCI)状态(state)准共址参考信号包括所述第二下行RS,或,所述CSI-RS与所述第二下行RS具有相同的TCI state准共址参考信号。也就是,所述CSI-RS resources需要QCL到所述第二下行RS,或者所述CSI-RS resources和第二下行RS都QCL到相同的TCI state ID,从而确保基于所述第二下行RS确定的空域滤波系数与基于CSI-RS确定的CSI-RS之间的匹配性,进而提高第二端口对应的CSI确定的准确性。
方式3:所述终端基于第三下行RS测量得到,所述第三下行RS为网络侧设备发送、且经过波束赋型或延迟补偿的预编码(Precoding)RS,对应的,终端接收经过不同precoding的RS并获得空域相关信息(如空域的功率谱)或无线信道对应的端口间的互相关性矩阵,进而基于空域的功率谱或互相关性矩阵获得空域滤波系数。
例如,网络侧设备(如网络侧设备)可以基于一些先验信息获得下行信道的几个主波束特征,并发送precoding的CSI-RS(上述第三下行RS),其中precoding信息可以基于奇异值分解(Singular Value Decomposition,SVD)分解获得的特征向量。例如Rel17协议讨论支持的增强的TypeII-codebook中,基站的处理行为,也可以是基于DFT基的precoding。终端接收对应的CSI-RS port,获取空域的功率谱,并通过傅里叶变换获得空域上的相关系数,如空域滤波系数,进而进行滤波处理。
一种实现方式,在所述终端基于前述的第三下行RS测量得到所述空域滤波系数的情况下,所述CSI-RS对应的TCI state准共址参考信号包括所述第三下行RS,或,所述CSI-RS与所述第三下行RS具有相同的TCI state准共址参考信号。也就是,所述CSI-RS resources需要QCL到所述第三下行RS,或者所述CSI-RS resources和第三下行RS都QCL到相同的TCI state ID,从而确保基于所述第三下行RS确定的空域滤波系数与基于CSI-RS确定的CSI-RS之间的匹配性,进而提高第二端口对应的CSI确定的准确性。
可以理解的是,终端基于第三下行RS确定空域滤波系数的相关过程,可参考前述方式1中的相关描述,在此不再赘述。
方式4:所述终端接收所述网络侧设备发送的空域滤波系数。
其中,所述空域滤波系数可以是所述网络侧设备基于上行信道测量获得,例如探测参考信号(Sounding Reference Signal,SRS)测量等。
可选的,所述SRS的空间关系(spatial relation)和所述CSI-RS能够QCL相同的TCI state指示关系(例如,所述SRS的空间关系和所述CSI-RS能够都QCL到相同的某个CSI-RS或同步信号块(Synchronization Signal and PBCH block,SSB)索引),或者所述SRS的spatial relation关联的下行参考信号就是所述的CSI-RS本身。
可选的,前述的QCL的spatial relation TCI state/TCI states中的QCL type至少包含一个新引入的QCL type,用于指示网络侧设备发送的空域滤波系数。例如QCL'typeE':{Spatial Tx parameter},由此,通过引入新的QCL type,能够实现空域滤波系数确定的准
确性。
基于此,一种实现方式中,为了所述终端与所述网络侧设备对所述空域滤波系数的理解一致,进而使得终端能够准确实现空域滤波系数的接收,因此,在本实施例中,所述空域滤波系数由所述网络侧设备发送的情况下,所述空域滤波系数通过以下21)-27)中的至少一项指示或表示。
21)K1×1的向量,用于表征水平维度的K1个第二天线端口的索引间差值的相关性,K1小于所述N1。
22)K2×1的向量,用于表征垂直维度的K2个第二天线端口的索引间差值的相关性,K2小于所述N2。
23)K1×K2的二维相关矩阵,用于表征水平维度的K1个第二天线端口以及垂直维度的K2个第二天线端口的索引间差值的自相关矩阵,K1小于所述N1,K2小于所述N2。
24)波束索引。
25)离散傅里叶变换DFT基索引。
26)不同的波束索引对应的相对功率差。
27)不同的DFT基索引对应的相对功率差。
其中,对于24)-27),其中的波束索引或者DFT基索引可对应水平维度(或垂直维度)的空域滤波系数的指示或表示。
基于前述方式1-方式4中提供的空域滤波系数或获取方式,所述终端在获取到空域滤波系数之后,根据所述空域滤波系数确定进行CSI估算的过程可以包括:终端基于配置了第一端口CSI-RS通过信道估计获得裸信道测量信息H_est,然后基于获得的空域滤波系数W_filer对裸信道测量信息进行滤波得到第二端口CSI-RS对应的信道测量信息H_filter,再基于信道测量信息H_filter确定CSI,例如,可以通过式(3)表示。
H_filter(p)=W_filer*H_est(k+[1:m]) (3)
H_filter(p)=W_filer*H_est(k+[1:m]) (3)
式(3)中,H_filter(p)表示第二端口索引p滤波后的信道测量信息,H_est(k+[1:m])表示第一端口索引为(k+[1:m])对应m个端口的信道测量信息。
其中,在终端实现过程中,p关联k,其关联目的是达到用第二端口索引p对周围临近m个第一端口进行滤波的目的。
一种实现方式中,考虑到本申请中在确定N个第二端口的CSI时引入了空域滤波系数,因此,为了确保CSI处理单元能够支持所述CSI确定过程的实现,可对CSI处理性能进行增强。例如,在本实施例中,可与所述CSI报告关联的CSI处理单元的数量与第一信息相关,所述第一信息为所述第二端口的数量与第一端口的数理比值。例如,在所述数理比值为N/M,那么CSI处理单元的数量确定和N/M的大小相关。
又例如,与所述CSI报告关联的CSI处理单元的数量基于第一CSI处理单元的数量和预定值确定,所述第一CSI处理单元是所述终端基于与所述N个第二端口对应的CSI-RS确定所述N个第二端口对应的CSI时所采用的CSI单元。例如,在所述终端基于与所述N个第二端口对应的CSI-RS确定所述N个第二端口对应的CSI时,采用的第一
CSI处理单元的数量为S,那么,所述终端在采用本申请提供的“根据所述M个第一端口对应的第一CSI以及空域滤波系数,估算得到所述N个第二端口对应的第二CSI”这一方式确定CSI时,采用的第二CSI处理单元的数量为S+预定值,其中,所述预定值为正数,如1、2、3等,其可以由协议约定、高层配置或网络侧配置等方式实现。
此外“所述终端基于与所述N个第二端口对应的CSI-RS确定所述N个第二端口对应的CSI”可以理解为:所述终端基于N个第二端口接收网络侧设备发送的CSI-RS并测量,根据信道测量结果确定所述N个第二端口对应的CSI。
另一种实现方式中,与所述CSI报告关联的CSI-RS资源中配置的目标参数与所述第二端口相关,其中,所述目标参数包括功率控制偏移量(power Control offset)。也就是说,在本方案的实现过程中,所述功率控制偏移量等参数是基于第二端口进行定义,从而能够使得本申请能够更好的相关技术中的技术进行融合、应用,提高本案的适用性。
本申请实施例中,终端通过在空域上离散分布CSI-RS端口设计以及利用大阵列天线相邻端口之间的空域相关性,进行全信道信息的恢复,能够网络性能有效解决针对超大规模天线CSI-RS resource端口增加引起的导频开销问题,确保了网络性能。
如图6所示,为本申请一示例性实施例提供的信道状态信息的确定方法600的流程示意图,该方法600可以但不限于由网络侧设备执行,具体可由安装于网络侧设备中的硬件或软件执行。本实施例中,所述方法600至少可以包括如下步骤。
S610,网络侧设备接收终端发送的N个第二端口对应的CSI。
其中,所述N个第二端口对应的CSI是基于与M个第一端口对应的信道状态信息参考信号CSI-RS确定,所述N个第二端口是所述网络侧设备为所述终端配置的CSI-RS端口,所述M个第一端口为所述N个第二端口中的部分端口。
可选的,所述方法包括:网络侧设备向终端发送第一指示信息;其中,CSI-RS资源的图样,所述CSI-RS资源的图样中包括水平维度的M1个第一端口、垂直维度的M2个第一端口,以及水平维度的N1个第二端口、垂直维度的N2个第二端口;第一映射关系,所述第一映射关系中配置有N1个所述第二端口与M1个第一端口之间的映射关系,或N2个所述第二端口与M2个所述第一端口之间的映射关系。
可选的,所述第一映射关系通过以下至少一项指示:位图;第二指示信息,用于指示预配置或协议约定的多种映射关系中的一个映射关系为所述第一映射关系。
可选的,所述位图包括以下至少一项:第一位图,其中,所述第一位图的长度为N1、且用于指示水平维度的所述第二端口和第一端口之间的映射关系;第二位图,其中,所述第二位图的长度为N2、且用于指示垂直维度的第二端口和第一端口之间的映射关系;第三位图,其中,所述第三位图的长度为N1*N2、且所述第三位图用于指示双极化天线组中每个极化天线组中的第二端口和第一端口之间的映射关系,或所述第三位图用于指示双极化天线组中的特定极化天线组中的第二端口和第一端口的映射关系;第四位图,其中,所述第四位图长度为n1*n2*2,所述第四位图用于指示双极化天线组中的第二端口和第一端口的映射关系。
可选的,所述方法还包括以下至少一项:向所述终端发送第一下行参考信号RS,其中,所述第一下行RS为所述CSI-RS,所述CSI-RS用于所述终端获取CSI-RS;向所述终端发送第二下行RS,其中,所述第二下行RS为多端口的RS,且所述第二下行RS不同于所述CSI-RS;向所述终端发送第三下行RS,所述第三下行RS为经过波束赋型或延迟补偿的预编码RS;向所述终端发送空域滤波系数,所述空域滤波系数基于上行信道测量得到;其中,所述第一下行RS、第二下行RS或所述第三下行RS用于所述终端确定空域滤波系数。
可选的,在所述网络侧设备向所述终端发送空域滤波系数的情况下,所述空域滤波系数通过以下至少一项指示或表示:K1×1的向量,用于表征水平维度的K1个第二天线端口的索引间差值的相关性,K1小于所述N1;K2×1的向量,用于表征垂直维度的K2个第二天线端口的索引间差值的相关性,K2小于所述N2;K1×K2的二维相关矩阵,用于表征水平维度的K1个第二天线端口以及垂直维度的K2个第二天线端口的索引间差值的自相关矩阵,K1小于所述N1,K2小于所述N2;波束索引;离散傅里叶变换DFT基索引;不同的波束索引对应的相对功率差;不同的DFT基索引对应的相对功率差。
可选的,所述方法还包括:接收终端发送的第二能力信息;其中,所述第二能力信息用于指示以下至少一项:最大端口数,其中,所述最大端口数是通过对所述终端在任意时域单元内处理的、且与CSI报告关联的所有激活CSI-RS资源中的第一端口或第二端口进行计数得到;所述终端在任意时域单元内处理的、且与CSI报告关联的所有激活CSI-RS资源中的第一端口的数量;所述终端在任意时域单元内处理的、且与CSI报告关联的所有激活CSI-RS资源中的第二端口的数量。
可以理解,方法实施例600中各实现方式的实现过程具有与前述方法实施例200-400相同或相应的技术特征,因此,方法实施例600中的各实现方式的实现过程可参照前述方法实施例200-400中的相关描述,并达到相同或相应的技术效果,为避免重复,在此不再赘述。
本申请实施例提供的信道状态信息的确定方法,执行主体可以为信道状态信息的确定装置。本申请实施例中以信道状态信息的确定装置执行信道状态信息的确定方法为例,说明本申请实施例提供的信道状态信息的确定装置。
如图7所示,为本申请一实施例提供的信道状态信息的确定装置700的结构示意图,该装置700包括:确定模块710,用于基于与M个第一端口对应的信道状态信息参考信号CSI-RS,确定N个第二端口对应的CSI;发送模块720,用于向网络侧设备发送所述N个第二端口对应的CSI;其中,所述N个第二端口是网络侧设备为所述终端配置的CSI-RS端口,所述M个第一端口为所述N个第二端口中的部分端口。
可选的,所述第一端口在同一极化方向上映射为M1个水平维度的端口和M2个垂直维度的端口,所述第二端口在同一极化方向上映射为N1个水平维度的端口和N2个垂直维度的端口,M1小于或等于N1,或,M2小于或等于N2,M1、M2、N1、N2均为大于0的整数,M=M1*M2*2,N=N1*N2*2。
可选的,所述装置700还包括接收模块,用于接收网络侧设备发送的第一指示信息;其中,所述第一指示信息中包括或指示以下至少一项:CSI-RS资源的图样,所述CSI-RS资源的图样中包括水平维度的M1个第一端口、垂直维度的M2个第一端口,以及水平维度的N1个第二端口、垂直维度的N2个第二端口;第一映射关系,所述第一映射关系中配置有N1个所述第二端口与M1个第一端口之间的映射关系,或N2个所述第二端口与M2个所述第一端口之间的映射关系。
可选的,所述第一映射关系通过以下至少一项指示:位图;第二指示信息,用于指示预配置或协议约定的多种映射关系中的一个映射关系为所述第一映射关系。
可选的,所述位图包括以下至少一项:第一位图,其中,所述第一位图的长度为N1、且用于指示水平维度的所述第二端口和第一端口之间的映射关系;第二位图,其中,所述第二位图的长度为N2、且用于指示垂直维度的第二端口和第一端口之间的映射关系;第三位图,其中,所述第三位图的长度为N1*N2、且所述第三位图用于指示双极化天线组中每个极化天线组中的第二端口和第一端口之间的映射关系,或所述第三位图用于指示双极化天线组中的特定极化天线组中的第二端口和第一端口的映射关系;第四位图,其中,所述第四位图长度为n1*n2*2,所述第四位图用于指示双极化天线组中的第二端口和第一端口的映射关系。
可选的,所述确定模块710还用于在所述CSI-RS资源中的特定时刻上接收到所述CSI-RS的情况下,确定所述第一映射关系生效或激活。
可选的,所述第一映射关系与所述终端的第一能力信息相关;其中,所述第一能力信息用于指示所述终端配置有第一数量个第二端口的情况下,所述终端支持第二数量个第一端口,以及所述第二数量个第一端口与所述第一数量个第二端口之间的映射关系或比值关系。
可选的,所述确定模块710基于与M个第一端口对应的CSI-RS,确定N个第二端口对应的CSI,包括:根据所述M个第一端口对应的CSI-RS以及空域滤波系数,估算得到所述N个第二端口对应的CSI。
可选的,所述空域滤波系数通过以下至少一项获取:基于第一下行RS测量得到;其中,所述第一下行RS为所述CSI-RS,所述CSI-RS用于所述终端获取所述CSI-RS;基于第二下行RS测量得到,其中,所述第二下行RS为多端口的RS,且所述第二下行RS不同于所述CSI-RS;基于第三下行RS测量得到,所述第三下行RS为经过波束赋型或延迟补偿的预编码RS;接收所述网络侧设备发送的空域滤波系数。
可选的,所述第二下行RS对应的端口图样为所述第二端口图样的子集或全集。
可选的,在所述终端基于所述第二下行RS或第三下行RS测量得到所述空域滤波系数的情况下,所述CSI-RS对应的TCI state准共址参考信号包括所述第二下行RS或所述第三下行RS,或,所述CSI-RS与所述第二下行RS或所述第三下行RS具有相同的TCI state准共址参考信号。
可选的,在所述空域滤波系数由所述网络侧设备发送的情况下,所述空域滤波系数
通过以下至少一项指示或表示:K1×1的向量,用于表征水平维度的K1个第二天线端口的索引间差值的相关性,K1小于所述N1;K2×1的向量,用于表征垂直维度的K2个第二天线端口的索引间差值的相关性,K2小于所述N2;K1×K2的二维相关矩阵,用于表征水平维度的K1个第二天线端口以及垂直维度的K2个第二天线端口的索引间差值的自相关矩阵,K1小于所述N1,K2小于所述N2;波束索引;离散傅里叶变换DFT基索引;不同的波束索引对应的相对功率差;不同的DFT基索引对应的相对功率差。
可选的,所述发送模块720,还用于向所述网络侧设备发送第二能力信息;其中,所述第二能力信息用于指示以下至少一项:最大端口数,其中,所述最大端口数是通过对所述终端在任意时域单元内处理的、且与CSI报告关联的所有激活CSI-RS资源中的第一端口或第二端口进行计数得到;所述终端在任意时域单元内处理的、且与CSI报告关联的所有激活CSI-RS资源中的第一端口的数量;所述终端在任意时域单元内处理的、且与CSI报告关联的所有激活CSI-RS资源中的第二端口的数量。
可选的,以下至少一项被满足:与所述CSI报告关联的CSI处理单元的数量与第一信息相关,所述第一信息为所述第二端口的数量与第一端口的数理比值;与所述CSI报告关联的CSI处理单元的数量基于第一CSI处理单元的数量和预定值确定,所述第一CSI处理单元是所述终端基于与所述N个第二端口进对应的CSI-RS确定所述N个第二端口对应的CSI时所采用的CSI单元;与所述CSI报告关联的CSI-RS资源中配置的目标参数与所述第二端口相关,其中,所述目标参数包括功率控制偏移量。
本申请实施例中的信道状态信息的确定装置700可以是电子设备,例如具有操作系统的电子设备,也可以是电子设备中的部件,例如集成电路或芯片。该电子设备可以是终端,也可以为除终端之外的其他设备。示例性的,终端可以包括但不限于上述所列举的终端11的类型,其他设备可以为服务器、网络附属存储器(Network Attached Storage,NAS)等,本申请实施例不作具体限定。
本申请实施例提供的信道状态信息的确定装置700能够实现图2至图4的方法实施例实现的各个过程,并达到相同的技术效果,为避免重复,这里不再赘述。
如图8所示,为本申请一实施例提供的信道状态信息的确定装置800的结构示意图,该装置800包括:接收模块810,用于接收终端发送的N个第二端口对应的信道状态信息CSI;其中,所述N个第二端口对应的CSI是基于与M个第一端口对应的信道状态信息参考信号CSI-RS确定,所述N个第二端口是所述网络侧设备为所述终端配置的CSI-RS端口,所述M个第一端口为所述N个第二端口中的部分端口。
可选的,所述装置800还包括发送模块,用于向终端发送第一指示信息;其中,所述第一指示信息包括或指示以下至少一项:CSI-RS资源的图样,所述CSI-RS资源的图样中包括水平维度的M1个第一端口、垂直维度的M2个第一端口,以及水平维度的N1个第二端口、垂直维度的N2个第二端口;第一映射关系,所述第一映射关系中配置有N1个所述第二端口与M1个第一端口之间的映射关系,或N2个所述第二端口与M2个所述第一端口之间的映射关系。
可选的,所述第一映射关系通过以下至少一项指示:位图;第二指示信息,用于指示预配置或协议约定的多种映射关系中的一个映射关系为所述第一映射关系。
可选的,所述位图包括以下至少一项:第一位图,其中,所述第一位图的长度为N1、且用于指示水平维度的所述第二端口和第一端口之间的映射关系;第二位图,其中,所述第二位图的长度为N2、且用于指示垂直维度的第二端口和第一端口之间的映射关系;第三位图,其中,所述第三位图的长度为N1*N2、且所述第三位图用于指示双极化天线组中每个极化天线组中的第二端口和第一端口之间的映射关系,或所述第三位图用于指示双极化天线组中的特定极化天线组中的第二端口和第一端口的映射关系;第四位图,其中,所述第四位图长度为n1*n2*2,所述第四位图用于指示双极化天线组中的第二端口和第一端口的映射关系。
可选的,所述发送模块还用于以下至少一项:向所述终端发送第一下行参考信号RS,其中,所述第一下行RS为所述CSI-RS,所述CSI-RS用于所述终端获取CSI-RS;向所述终端发送第二下行RS,其中,所述第二下行RS为多端口的RS,且所述第二下行RS不同于所述CSI-RS;向所述终端发送第三下行RS,所述第三下行RS为经过波束赋型或延迟补偿的预编码RS;向所述终端发送空域滤波系数,所述空域滤波系数基于上行信道测量得到;其中,所述第一下行RS、第二下行RS或所述第三下行RS用于所述终端确定空域滤波系数。
可选的,在所述发送模块810向所述终端发送空域滤波系数的情况下,所述空域滤波系数通过以下至少一项指示或表示:K1×1的向量,用于表征水平维度的K1个第二天线端口的索引间差值的相关性,K1小于所述N1;K2×1的向量,用于表征垂直维度的K2个第二天线端口的索引间差值的相关性,K2小于所述N2;K1×K2的二维相关矩阵,用于表征水平维度的K1个第二天线端口以及垂直维度的K2个第二天线端口的索引间差值的自相关矩阵,K1小于所述N1,K2小于所述N2;波束索引;离散傅里叶变换DFT基索引;不同的波束索引对应的相对功率差;不同的DFT基索引对应的相对功率差。
可选的,所述接收模块810还用于接收终端发送的第二能力信息;其中,所述第二能力信息用于指示以下至少一项:最大端口数,其中,所述最大端口数是通过对所述终端在任意时域单元内处理的、且与CSI报告关联的所有激活CSI-RS资源中的第一端口或第二端口进行计数得到;所述终端在任意时域单元内处理的、且与CSI报告关联的所有激活CSI-RS资源中的第一端口的数量;所述终端在任意时域单元内处理的、且与CSI报告关联的所有激活CSI-RS资源中的第二端口的数量。
本申请实施例中的信道状态信息的确定装置800可以是电子设备,例如具有操作系统的电子设备,也可以是电子设备中的部件,例如集成电路或芯片。该电子设备可以是网络侧设备,也可以为除网络侧设备之外的其他设备。示例性的,网络侧设备可以包括但不限于上述所列举的网络侧设备12的类型,本申请实施例不作具体限定。
本申请实施例提供的信道状态信息的确定装置800能够实现图6的方法实施例实现的各个过程,并达到相同的技术效果,为避免重复,这里不再赘述。
如图9所示,本申请实施例还提供一种通信设备900,包括处理器901和存储器902,存储器902上存储有可在所述处理器901上运行的程序或指令,例如,该通信设备900为终端时,该程序或指令被处理器901执行时实现上述信道状态信息的确定方法实施例的各个步骤,且能达到相同的技术效果。该通信设备900为网络侧设备时,该程序或指令被处理器901执行时实现上述信道状态信息的确定方法实施例的各个步骤,且能达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例还提供一种终端,包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现如图2-图4所示方法实施例中的步骤。该终端实施例与上述终端侧方法实施例对应,上述方法实施例的各个实施过程和实现方式均可适用于该终端实施例中,且能达到相同的技术效果。具体地,图10为实现本申请实施例的一种终端的硬件结构示意图。
该终端1000包括但不限于:射频单元1001、网络模块1002、音频输出单元1003、输入单元1004、传感器1005、显示单元1006、用户输入单元1007、接口单元1008、存储器1009以及处理器1010等中的至少部分部件。
本领域技术人员可以理解,终端1000还可以包括给各个部件供电的电源(比如电池),电源可以通过电源管理系统与处理器1010逻辑相连,从而通过电源管理系统实现管理充电、放电以及功耗管理等功能。图10中示出的终端结构并不构成对终端的限定,终端可以包括比图示更多或更少的部件,或者组合某些部件,或者不同的部件布置,在此不再赘述。
应理解的是,本申请实施例中,输入单元1004可以包括图形处理单元(Graphics Processing Unit,GPU)10041和麦克风10042,图形处理器10041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元1006可包括显示面板10061,可以采用液晶显示器、有机发光二极管等形式来配置显示面板10061。用户输入单元1007包括触控面板10071以及其他输入设备10072中的至少一种。触控面板10 071,也称为触摸屏。触控面板10071可包括触摸检测装置和触摸控制器两个部分。其他输入设备10072可以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,在此不再赘述。
本申请实施例中,射频单元1001接收来自网络侧设备的下行数据后,可以传输给处理器1010进行处理;另外,射频单元1001可以向网络侧设备发送上行数据。通常,射频单元1001包括但不限于天线、放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器1009可用于存储软件程序或指令以及各种数据。存储器1009可主要包括存储程序或指令的第一存储区和存储数据的第二存储区,其中,第一存储区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外,存储器1009可以包括易失性存储器或非易失性存储器。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),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(Synch link DRAM,SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM,DRRAM)。本申请实施例中的存储器1009包括但不限于这些和任意其它适合类型的存储器。
处理器1010可包括一个或多个处理单元;可选的,处理器1010集成应用处理器和调制解调处理器,其中,应用处理器主要处理涉及操作系统、用户界面和应用程序等的操作,调制解调处理器主要处理无线通信信号,如基带处理器。可以理解的是,上述调制解调处理器也可以不集成到处理器1010中。
其中,处理器1010,用于基于与M个第一端口对应的信道状态信息参考信号CSI-RS,确定N个第二端口对应的CSI;射频单元1001,用于向网络侧设备发送所述N个第二端口对应的CSI;根据所述M个第一端口对应的CSI-RS确定N个第二端口对应的CSI;其中,所述N个第二端口是网络侧设备为所述终端配置的CSI-RS端口,所述M个第一端口为所述N个第二端口中的部分端口。
可选的,所述第一端口在同一极化方向上映射为M1个水平维度的端口和M2个垂直维度的端口,所述第二端口在同一极化方向上映射为N1个水平维度的端口和N2个垂直维度的端口,M1小于或等于N1,或,M2小于或等于N2,M1、M2、N1、N2均为大于0的整数,M=M1*M2*2,N=N1*N2*2。
可选的,射频单元1001还用于接收网络侧设备发送的第一指示信息;其中,所述第一指示信息中包括以下至少一项:CSI-RS资源的图样,所述CSI-RS资源的图样中包括水平维度的M1个第一端口、垂直维度的M2个第一端口,以及水平维度的N1个第二端口、垂直维度的N2个第二端口;第一映射关系,所述第一映射关系中配置有N1个所述第二端口与M1个第一端口之间的映射关系,或N2个所述第二端口与M2个所述第一端口之间的映射关系。
可选的,所述第一映射关系通过以下至少一项指示:位图;第二指示信息,用于指示预配置或协议约定的多种映射关系中的一个映射关系为所述第一映射关系。
可选的,所述位图包括以下至少一项:第一位图,其中,所述第一位图的长度为N1、且用于指示水平维度的所述第二端口和第一端口之间的映射关系;第二位图,其中,所述第二位图的长度为N2、且用于指示垂直维度的第二端口和第一端口之间的映射关系;第三位图,其中,所述第三位图的长度为N1*N2、且所述第三位图用于指示双极化天线组中每个极化天线组中的第二端口和第一端口之间的映射关系,或所述第三位图用于指示双极化天线组中的特定极化天线组中的第二端口和第一端口的映射关系;第四位图,其中,所述第四位图长度为n1*n2*2,所述第四位图用于指示双极化天线组中的第二端口
和第一端口的映射关系。
可选的,所述处理器1010还用于在所述CSI-RS资源中的特定时刻上接收到所述CSI-RS的情况下,确定所述第一映射关系生效或激活。
可选的,所述第一映射关系与所述终端的第一能力信息相关;其中,所述第一能力信息用于指示所述终端配置有第一数量个第二端口的情况下,所述终端支持第二数量个第一端口,以及所述第二数量个第一端口与所述第一数量个第二端口之间的映射关系或比值关系。
可选的,所述处理器1010基于与M个第一端口对应的CSI-RS,确定N个第二端口对应的CSI,包括:根据所述M个第一端口对应的CSI-RS以及空域滤波系数,估算得到所述N个第二端口对应的CSI。
可选的,所述空域滤波系数通过以下至少一项获取:基于第一下行RS测量得到;其中,所述第一下行RS为所述CSI-RS,所述CSI-RS用于所述终端获取所述CSI-RS;基于第二下行RS测量得到,其中,所述第二下行RS为多端口的RS,且所述第二下行RS不同于所述CSI-RS;基于第三下行RS测量得到,所述第三下行RS为经过波束赋型或延迟补偿的预编码RS;接收所述网络侧设备发送的空域滤波系数。
可选的,所述第二下行RS对应的端口图样为所述第二端口图样的子集或全集。
可选的,在所述终端基于所述第二下行RS或第三下行RS测量得到所述空域滤波系数的情况下,所述CSI-RS对应的TCI state准共址参考信号包括所述第二下行RS或所述第三下行RS,或,所述CSI-RS与所述第二下行RS或所述第三下行RS具有相同的TCI state准共址参考信号。
可选的,在所述空域滤波系数由所述网络侧设备发送的情况下,所述空域滤波系数通过以下至少一项指示或表示:K1×1的向量,用于表征水平维度的K1个第二天线端口的索引间差值的相关性,K1小于所述N1;K2×1的向量,用于表征垂直维度的K2个第二天线端口的索引间差值的相关性,K2小于所述N2;K1×K2的二维相关矩阵,用于表征水平维度的K1个第二天线端口以及垂直维度的K2个第二天线端口的索引间差值的自相关矩阵,K1小于所述N1,K2小于所述N2;波束索引;离散傅里叶变换DFT基索引;不同的波束索引对应的相对功率差;不同的DFT基索引对应的相对功率差。
可选的,所述射频单元1001,用于向所述网络侧设备发送第二能力信息;其中,所述第二能力信息用于指示以下至少一项:最大端口数,其中,所述最大端口数是通过对所述终端在任意时域单元内处理的、且与CSI报告关联的所有激活CSI-RS资源中的第一端口或第二端口进行计数得到;所述终端在任意时域单元内处理的、且与CSI报告关联的所有激活CSI-RS资源中的第一端口的数量;所述终端在任意时域单元内处理的、且与CSI报告关联的所有激活CSI-RS资源中的第二端口的数量。
可选的,以下至少一项被满足:与所述CSI报告关联的CSI处理单元的数量与第一信息相关,所述第一信息为所述第二端口的数量与第一端口的数理比值;与所述CSI报告关联的CSI处理单元的数量基于第一CSI处理单元的数量和预定值确定,所述第一CSI
处理单元是所述终端是基于与所述N个第二端口对应的CSI-RS确定所述N个第二端口对应的CSI时所采用的CSI单元;与所述CSI报告关联的CSI-RS资源中配置的目标参数与所述第二端口相关,其中,所述目标参数包括功率控制偏移量。
可以理解,本实施例中提及的各实现方式的实现过程可以参照方法实施例200-400的相关描述,并达到相同或相应的技术效果,为避免重复,在此不再赘述。
本申请实施例还提供一种网络侧设备,包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现如图6所示的方法实施例的步骤。该网络侧设备实施例与上述网络侧设备方法实施例对应,上述方法实施例的各个实施过程和实现方式均可适用于该网络侧设备实施例中,且能达到相同的技术效果。
具体地,本申请实施例还提供了一种网络侧设备。如图11所示,该网络侧设备1100包括:天线1101、射频装置1102、基带装置1103、处理器1104和存储器1105。天线1101与射频装置1102连接。在上行方向上,射频装置1102通过天线1101接收信息,将接收的信息发送给基带装置1103进行处理。在下行方向上,基带装置1103对要发送的信息进行处理,并发送给射频装置1102,射频装置1102对收到的信息进行处理后经过天线1101发送出去。
以上实施例中网络侧设备执行的方法可以在基带装置1103中实现,该基带装置113包括基带处理器。
基带装置1103例如可以包括至少一个基带板,该基带板上设置有多个芯片,如图11所示,其中一个芯片例如为基带处理器,通过总线接口与存储器1105连接,以调用存储器1105中的程序,执行以上方法实施例中所示的网络设备操作。
该网络侧设备还可以包括网络接口1106,该接口例如为通用公共无线接口(Common Public Radio Interface,CPRI)。
具体地,本申请实施例的网络侧设备1100还包括:存储在存储器1105上并可在处理器1104上运行的指令或程序,处理器1104调用存储器1105中的指令或程序执行图8所示各模块执行的方法,并达到相同的技术效果,为避免重复,故不在此赘述。
本申请实施例还提供一种可读存储介质,所述可读存储介质上存储有程序或指令,该程序或指令被处理器执行时实现上述信道状态信息的确定方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
其中,所述处理器为上述实施例中所述的终端中的处理器。所述可读存储介质,包括计算机可读存储介质,如计算机只读存储器ROM、随机存取存储器RAM、磁碟或者光盘等。在一些示例中,可读存储介质可以是非瞬态的可读存储介质。
本申请实施例另提供了一种芯片,所述芯片包括处理器和通信接口,所述通信接口和所述处理器耦合,所述处理器用于运行程序或指令,实现上述信道状态信息的确定方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例提到的处理器可以包括通用处理器、专用处理器等,例如包括中央处理单元(Central Processing Unit,CPU)、微处理器、数字信号处理器(Digital Signal
Processor,DSP)、人工智能(Artificial Intelligent,AI)处理器、图形处理器(Graphics Processing Unit,GPU)、专用集成电路(Application Specific Integrated Circuit,ASIC)、网络处理器(Network Processor,NP)、现场可编程门阵列(Field Programmable Gate Array,FPGA)或者其他可编程逻辑器件、门电路、晶体管、分立硬件组件等。
应理解,本申请实施例提到的芯片还可以称为系统级芯片,系统芯片,芯片系统或片上系统芯片等。
本申请实施例另提供了一种计算机程序/程序产品,所述计算机程序/程序产品被存储在存储介质中,所述计算机程序/程序产品被至少一个处理器执行以实现上述信道状态信息的确定方法实施例的各个过程,且能达到相同的技术效果,为避免重复,这里不再赘述。
本申请实施例还提供了一种无线通信系统,包括:终端及网络侧设备,所述终端可用于实现上述信道状态信息的确定方法实施例200-400的各个过程,所述网络侧设备可用于实现上述信道状态信息的确定方法实施例600的各个过程,所述且能达到相同的技术效果,为避免重复,这里不再赘述。
需要说明的是,在本文中,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外,需要指出的是,本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能,还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能,例如,可以按不同于所描述的次序来执行所描述的方法,并且还可以添加、省去或组合各种步骤。另外,参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解到上述实施例方法可借助计算机软件产品加必需的通用硬件平台的方式来实现,当然也可以通过硬件。该计算机软件产品存储在存储介质(如ROM、RAM、磁碟、光盘等)中,包括若干指令,用以使得终端或者网络侧设备执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述,但是本申请并不局限于上述的具体实施方式,上述的具体实施方式仅仅是示意性的,而不是限制性的,本领域的普通技术人员在本申请的启示下,在不脱离本申请宗旨和权利要求所保护的范围情况下,还可做出很多形式的实施方式,这些实施方式均属于本申请的保护之内。
Claims (26)
- 一种信道状态信息的确定方法,其中,包括:终端基于与M个第一端口对应的信道状态信息参考信号CSI-RS,确定N个第二端口对应的CSI;向网络侧设备发送所述N个第二端口对应的CSI;其中,所述N个第二端口是所述网络侧设备为所述终端配置的CSI-RS端口,所述M个第一端口为所述N个第二端口中的部分端口。
- 如权利要求1所述的方法,其中,所述第一端口在同一极化方向上映射为M1个水平维度的端口和M2个垂直维度的端口,所述第二端口在同一极化方向上映射为N1个水平维度的端口和N2个垂直维度的端口,M1小于或等于N1,或,M2小于或等于N2,M1、M2、N1、N2均为大于0的整数,M=M1*M2*2,N=N1*N2*2。
- 如权利要求2所述的方法,其中,所述方法还包括:接收网络侧设备发送的第一指示信息;其中,所述第一指示信息中包括以下至少一项:CSI-RS资源的图样,所述CSI-RS资源的图样中包括水平维度的M1个第一端口、垂直维度的M2个第一端口,以及水平维度的N1个第二端口、垂直维度的N2个第二端口;第一映射关系,所述第一映射关系中配置有N1个所述第二端口与M1个第一端口之间的映射关系,或N2个所述第二端口与M2个所述第一端口之间的映射关系。
- 如权利要求3所述的方法,其中,所述第一映射关系通过以下至少一项指示:位图;第二指示信息,用于指示预配置或协议约定的多种映射关系中的一个映射关系为所述第一映射关系。
- 如权利要求4所述的方法,其中,所述位图包括以下至少一项:第一位图,其中,所述第一位图的长度为N1、且用于指示水平维度的所述第二端口和第一端口之间的映射关系;第二位图,其中,所述第二位图的长度为N2、且用于指示垂直维度的第二端口和第一端口之间的映射关系;第三位图,其中,所述第三位图的长度为N1*N2、且所述第三位图用于指示双极化天线组中每个极化天线组中的第二端口和第一端口之间的映射关系,或所述第三位图用于指示双极化天线组中的特定极化天线组中的第二端口和第一端口的映射关系;第四位图,其中,所述第四位图长度为N1*N2*2,所述第四位图用于指示双极化天线组中的第二端口和第一端口的映射关系。
- 如权利要求4或5所述的方法,其中,所述方法还包括:在所述CSI-RS资源中的特定时刻上接收到所述CSI-RS的情况下,确定所述第一映射关系生效或激活。
- 如权利要求4-6中任一项所述的方法,其中,所述第一映射关系与所述终端的第一能力信息相关;其中,所述第一能力信息用于指示所述终端配置有第一数量个第二端口的情况下,所述终端支持第二数量个第一端口,以及所述第二数量个第一端口与所述第一数量个第二端口之间的映射关系或比值关系。
- 如权利要求1-7中任一项所述的方法,其中,所述终端基于与M个第一端口对应的CSI-RS,确定N个第二端口对应的CSI,包括:根据所述M个第一端口对应的CSI-RS以及空域滤波系数,估算得到所述N个第二端口对应的CSI。
- 如权利要求8所述的方法,其中,所述空域滤波系数通过以下至少一项获取:所述终端基于第一下行RS测量得到;其中,所述第一下行RS为所述CSI-RS;所述终端基于第二下行RS测量得到,其中,所述第二下行RS为多端口的RS,且所述第二下行RS不同于所述CSI-RS;所述终端基于第三下行RS测量得到,所述第三下行RS为经过波束赋型或延迟补偿的预编码RS;所述终端接收所述网络侧设备发送的空域滤波系数。
- 如权利要求9所述的方法,其中,所述第二下行RS对应的端口图样为所述第二端口图样的子集或全集。
- 如权利要求9所述的方法,其中,在所述终端基于所述第二下行RS或第三下行RS测量得到所述空域滤波系数的情况下,所述CSI-RS对应的传输配置指示状态TCI state准共址参考信号包括所述第二下行RS或所述第三下行RS,或,所述CSI-RS与所述第二下行RS或所述第三下行RS具有相同的TCI state准共址参考信号。
- 如权利要求9所述的方法,其中,在所述空域滤波系数由所述网络侧设备发送的情况下,所述空域滤波系数通过以下至少一项指示或表示:K1×1的向量,用于表征水平维度的K1个第二天线端口的索引间差值的相关性,K1小于所述N1;K2×1的向量,用于表征垂直维度的K2个第二天线端口的索引间差值的相关性,K2小于所述N2;K1×K2的二维相关矩阵,用于表征水平维度的K1个第二天线端口以及垂直维度的K2个第二天线端口的索引间差值的自相关矩阵,K1小于所述N1,K2小于所述N2;波束索引;离散傅里叶变换DFT基索引;不同的波束索引对应的相对功率差;不同的DFT基索引对应的相对功率差。
- 如权利要求1-12中任一项所述的方法,其中,所述方法还包括:向所述网络侧设备发送第二能力信息;其中,所述第二能力信息用于指示以下至少一项:最大端口数,其中,所述最大端口数是通过对所述终端在任意时域单元内处理的、且与CSI报告关联的所有激活CSI-RS资源中的第一端口或第二端口进行计数得到;所述终端在任意时域单元内处理的、且与CSI报告关联的所有激活CSI-RS资源中的第一端口的数量;所述终端在任意时域单元内处理的、且与CSI报告关联的所有激活CSI-RS资源中的第二端口的数量。
- 如权利要求1-13中任一项所述的方法,其中,以下至少一项被满足:与CSI报告关联的CSI处理单元的数量与第一信息相关,所述第一信息为所述第二端口的数量与第一端口的数理比值;与CSI报告关联的CSI处理单元的数量基于第一CSI处理单元的数量和预定值确定,所述第一CSI处理单元是所述终端基于与所述N个第二端口对应的CSI-RS确定所述N个第二端口对应的CSI时所采用的CSI单元;与CSI报告关联的CSI-RS资源中配置的目标参数与所述第二端口相关,其中,所述目标参数包括功率控制偏移量。
- 一种信道状态信息的确定方法,其中,包括:网络侧设备接收终端发送的N个第二端口对应的信道状态信息CSI;其中,所述N个第二端口对应的CSI是基于与M个第一端口对应的信道状态信息参考信号CSI-RS确定的,所述N个第二端口是所述网络侧设备为所述终端配置的CSI-RS端口,所述M个第一端口为所述N个第二端口中的部分端口。
- 如权利要求15中所述的方法,其中,所述方法还包括:向所述终端发送第一指示信息;其中,所述第一指示信息包括以下至少一项:CSI-RS资源的图样,所述CSI-RS资源的图样中包括水平维度的M1个第一端口、垂直维度的M2个第一端口,以及水平维度的N1个第二端口、垂直维度的N2个第二端口;第一映射关系,所述第一映射关系中配置有N1个所述第二端口与M1个第一端口之间的映射关系,或N2个所述第二端口与M2个所述第一端口之间的映射关系。
- 如权利要求16所述的方法,其中,所述第一映射关系通过以下至少一项指示:位图;第二指示信息,用于指示预配置或协议约定的多种映射关系中的一个映射关系为所述第一映射关系。
- 如权利要求17所述的方法,其中,所述位图包括以下至少一项:第一位图,其中,所述第一位图的长度为N1、且用于指示水平维度的所述第二端口和第一端口之间的映射关系;第二位图,其中,所述第二位图的长度为N2、且用于指示垂直维度的第二端口和第 一端口之间的映射关系;第三位图,其中,所述第三位图的长度为N1*N2、且所述第三位图用于指示双极化天线组中每个极化天线组中的第二端口和第一端口之间的映射关系,或所述第三位图用于指示双极化天线组中的特定极化天线组中的第二端口和第一端口的映射关系;第四位图,其中,所述第四位图长度为N1*N2*2,所述第四位图用于指示双极化天线组中的第二端口和第一端口的映射关系。
- 如权利要求15-18中任一项所述的方法,其中,所述方法还包括以下至少一项:向所述终端发送第一下行参考信号RS,其中,所述第一下行RS为所述CSI-RS;向所述终端发送第二下行RS,其中,所述第二下行RS为多端口的RS,且所述第二下行RS不同于所述CSI-RS;向所述终端发送第三下行RS,所述第三下行RS为经过波束赋型或延迟补偿的预编码RS;向所述终端发送空域滤波系数,所述空域滤波系数基于上行信道测量得到;其中,所述第一下行RS、第二下行RS或所述第三下行RS用于所述终端确定空域滤波系数。
- 如权利要求19所述的方法,其中,在所述网络侧设备向所述终端发送空域滤波系数的情况下,所述空域滤波系数通过以下至少一项指示或表示:K1×1的向量,用于表征水平维度的K1个第二天线端口的索引间差值的相关性,K1小于所述N1;K2×1的向量,用于表征垂直维度的K2个第二天线端口的索引间差值的相关性,K2小于所述N2;K1×K2的二维相关矩阵,用于表征水平维度的K1个第二天线端口以及垂直维度的K2个第二天线端口的索引间差值的自相关矩阵,K1小于所述N1,K2小于所述N2;波束索引;离散傅里叶变换DFT基索引;不同的波束索引对应的相对功率差;不同的DFT基索引对应的相对功率差。
- 如权利要求15-20中任一项所述的方法,其中,所述方法还包括:接收所述终端发送的第二能力信息;其中,所述第二能力信息用于指示以下至少一项:最大端口数,其中,所述最大端口数是通过对所述终端在任意时域单元内处理的、且与CSI报告关联的所有激活CSI-RS资源中的所述第一端口或第二端口进行计数得到;所述终端在任意时域单元内处理的、且与CSI报告关联的所有激活CSI-RS资源中的第一端口的数量;所述终端在任意时域单元内处理的、且与CSI报告关联的所有激活CSI-RS资源中的第二端口的数量。
- 一种信道状态信息的确定装置,其中,包括:确定模块,用于基于与M个第一端口对应的信道状态信息参考信号CSI-RS,确定N个第二端口对应的CSI;发送模块,用于向网络侧设备发送所述N个第二端口对应的CSI;其中,所述N个第二端口是网络侧设备为终端配置的CSI-RS端口,所述M个第一端口为所述N个第二端口中的部分端口。
- 一种信道状态信息的确定装置,其中,包括:接收模块,用于接收终端发送的N个第二端口对应的信道状态信息CSI;其中,所述N个第二端口对应的CSI是基于与M个第一端口对应的信道状态信息参考信号CSI-RS确定,所述N个第二端口是所述网络侧设备为所述终端配置的CSI-RS端口,所述M个第一端口为所述N个第二端口中的部分端口。
- 一种终端,其中,包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如权利要求1至14任一项所述的方法的步骤。
- 一种网络侧设备,其中,包括处理器和存储器,所述存储器存储可在所述处理器上运行的程序或指令,所述程序或指令被所述处理器执行时实现如权利要求15至21任一项所述的方法的步骤。
- 一种可读存储介质,其中,所述可读存储介质上存储程序或指令,所述程序或指令被处理器执行时实现如权利要求1-14任一项所述的方法的步骤,或者实现如权利要求15至21任一项所述的方法的步骤。
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| CN107683571A (zh) * | 2015-06-07 | 2018-02-09 | Lg电子株式会社 | 无线通信系统中的信道测量方法及其设备 |
| CN113810090A (zh) * | 2020-06-16 | 2021-12-17 | 华为技术有限公司 | 通信方法和通信装置 |
| CN114375041A (zh) * | 2020-10-15 | 2022-04-19 | 北京紫光展锐通信技术有限公司 | 信号处理方法及装置 |
| WO2022267899A1 (zh) * | 2021-06-24 | 2022-12-29 | 华为技术有限公司 | 一种信道状态信息反馈方法及通信装置 |
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| CN107683571A (zh) * | 2015-06-07 | 2018-02-09 | Lg电子株式会社 | 无线通信系统中的信道测量方法及其设备 |
| CN113810090A (zh) * | 2020-06-16 | 2021-12-17 | 华为技术有限公司 | 通信方法和通信装置 |
| CN114375041A (zh) * | 2020-10-15 | 2022-04-19 | 北京紫光展锐通信技术有限公司 | 信号处理方法及装置 |
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