CN111416644A - CSI reporting method, configuration method, terminal and network side equipment - Google Patents
CSI reporting method, configuration method, terminal and network side equipment Download PDFInfo
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- CN111416644A CN111416644A CN201910014496.0A CN201910014496A CN111416644A CN 111416644 A CN111416644 A CN 111416644A CN 201910014496 A CN201910014496 A CN 201910014496A CN 111416644 A CN111416644 A CN 111416644A
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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]
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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
- H04B7/0413—MIMO systems
- H04B7/0417—Feedback systems
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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
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Abstract
The invention provides a CSI reporting method, a configuration method, a terminal and network side equipment, wherein the CSI reporting method is used for supporting a terminal with multiple transmission receiving points (TPR), and comprises the following steps: receiving a CSI report configuration message, wherein the CSI report configuration message comprises a resource indication field, the resource indication field is used for indicating N groups of resources, and N is an integer greater than or equal to 2; and sending a CSI report message, wherein the report message comprises a CSI bearing field, and the CSI bearing field is used for carrying target CSI obtained according to the measurement of the N groups of resources. The embodiment of the invention can reduce the cost of CSI feedback.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a CSI reporting method, a configuration method, a terminal, and a network device.
Background
As one of the key technologies of the NR (New Radio) access technology, a large-scale MIMO (Massive Multiple Input Multiple Output) technology can improve system capacity by using more spatial degrees of freedom, thereby being widely researched.
In a large-scale MIMO system, in order to select a suitable TRP (transmission reception Point) in a network side device to improve system transmission performance, the network side device needs to know CSI (Channel State Information) of each TRP, and the CSI is usually measured by a terminal, so the terminal needs to feed back the CSI to the network side device.
In the related art, each TRP sends one piece of CSI configuration information to the terminal, and the terminal measures the CSI of each TRP according to the received configuration information and feeds back the measured CSI. Therefore, one or more TRPs with good transmission quality are selected for signal transmission according to the CSI measured by the terminal.
As can be seen from this, in the related art, the CSI configuration and feedback of each TRP are performed separately, which increases the cost of feeding back CSI.
Disclosure of Invention
The embodiment of the invention provides a CSI reporting method, a configuration method, a terminal and network side equipment, and aims to solve the problem of high cost of CSI feedback in the related art.
In order to solve the technical problems, the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a CSI reporting method, for a terminal supporting multiple transmission reception points TPR, where the reporting method includes:
receiving a CSI report configuration message, wherein the CSI report configuration message comprises a resource indication field, the resource indication field is used for indicating N groups of resources, and N is an integer greater than or equal to 2;
and sending a CSI report message, wherein the report message comprises a CSI bearing field, and the CSI bearing field is used for carrying target CSI obtained according to the measurement of the N groups of resources.
In a second aspect, an embodiment of the present invention provides a configuration method, where the configuration method is used for a network side device, and the configuration method includes:
sending a CSI report configuration message, wherein the CSI report configuration message comprises a resource indication field, the resource indication field is used for indicating N groups of resources, and N is an integer greater than or equal to 2;
and receiving a CSI report message sent by a terminal supporting multiple transmission receiving points (TPR), wherein the CSI report message comprises a CSI bearer field, and the CSI bearer field is used for carrying target CSI obtained according to the measurement of the N groups of resources.
In a third aspect, an embodiment of the present invention provides a terminal, which supports multiple transmission reception points TPR, where the terminal includes a first processor and a first transceiver:
the first transceiver is configured to receive a channel state information, CSI, report configuration message, where the CSI report configuration message includes a resource indication field, where the resource indication field is used to indicate N sets of resources, where N is an integer greater than or equal to 2;
the first transceiver is further configured to send a CSI report message, where the report message includes a CSI bearer field, and the CSI bearer field is used to carry target CSI obtained according to the measurement of the N sets of resources.
In a fourth aspect, an embodiment of the present invention provides a network-side device, including a second processor and a second transceiver:
the second transceiver is configured to transmit a channel state information, CSI, report configuration message, where the CSI report configuration message includes a resource indication field, where the resource indication field is used to indicate N sets of resources, where N is an integer greater than or equal to 2;
the second transceiver is further configured to receive a CSI report message sent by a terminal that supports multiple transmission reception points TPR, where the CSI report message includes a CSI bearer field, and the CSI bearer field is used to carry target CSI obtained according to the measurement of the N sets of resources.
In a fifth aspect, an embodiment of the present invention provides a terminal, including: a first memory, a third processor and a first computer program stored on the first memory and executable on the third processor, the first computer program, when executed by the third processor, implementing the steps of the CSI reporting method as described above.
In a sixth aspect, an embodiment of the present invention provides a network side device, including: a second memory, a fourth processor and a second computer program stored on the second memory and executable on the fourth processor, the second computer program, when executed by the fourth processor, implementing the steps of the configuration method as described above.
In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a third computer program is stored, which, when being executed by a fifth processor, implements the steps of the CSI reporting method as described above; or steps of a configuration method as described above.
In the embodiment of the present invention, a terminal supporting multiple transmission receiving points TPR receives a CSI report configuration message, where the CSI report configuration message includes a resource indication field, the resource indication field is used to indicate N groups of resources, and N is an integer greater than or equal to 2; and sending a CSI report message, wherein the report message comprises a CSI bearing field, and the CSI bearing field is used for carrying target CSI obtained according to the measurement of the N groups of resources. In this way, the terminal can feed back the target CSI of the N TRPs only through one CSI report configuration message, thereby avoiding the problem of high cost caused by that the N TRPs respectively send the CSI configuration information to the terminal.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart of a CSI reporting method according to an embodiment of the present invention;
fig. 2 is a first application scenario diagram of a CSI reporting method according to an embodiment of the present invention;
fig. 3 is a second application scenario diagram of a CSI reporting method according to an embodiment of the present invention;
FIG. 4 is a flow chart of a configuration method provided by an embodiment of the invention;
fig. 5 is a flowchart of a CSI configuration and reporting method according to an embodiment of the present invention;
fig. 6 is a structural diagram of a first terminal according to an embodiment of the present invention;
fig. 7 is a structural diagram of a second terminal according to an embodiment of the present invention;
fig. 8 is a structural diagram of a third terminal provided in an embodiment of the present invention;
fig. 9 is a structural diagram of a first network-side device according to an embodiment of the present invention;
fig. 10 is a structural diagram of a second network-side device according to an embodiment of the present invention;
fig. 11 is a structural diagram of a third network-side device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminal according to the embodiments of the present invention may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, and various forms of terminal devices, Mobile Stations (MS), and so on. For convenience of description, the above-mentioned devices are collectively referred to as a terminal.
The embodiments of the present invention may be applied to a 5G (5th Generation, fifth Generation) communication system, where the referred TRP (Transmission Reception Point) may be a base station, which includes macro base stations, micro base stations, relay stations, access points, and the like in various forms, in systems adopting different radio access technologies, names of devices having functions of the base station may be different, for example, in an L TE (L ong Term Evolution) system, referred to as eNB (evolved Node B), and in a 3G communication system, referred to as Node B (Node B), and the like.
Please refer to fig. 1, which is a flowchart illustrating a CSI reporting method according to an embodiment of the present invention. The CSI reporting method is applied to a terminal supporting multiple transmission reception points TPR, as shown in fig. 1, and the reporting method includes the following steps:
The N sets of resources correspond to N transmission reception points TRP one to one, and the N TRPs and the terminal may perform signal transmission, for example: near the terminal 201, 4 base stations are provided, which are: TRP1, TRP2, TRP3 and TRP4, and the terminal 201 may perform signal transmission using a transmission resource of any one or more of TRP1, TRP2, TRP3 and TRP 4.
In addition, the CSI report configuration message received by the terminal may be sent by any one or more of the N TRPs.
In addition, the resource group corresponding to each TRP includes non-zero power channel state information reference signal resources and/or channel state information interference measurement reference signal resources. The non-zero power channel state information reference signal Resource can also be called as NZP CSI-RS Resource Setting, and is used for transmitting a non-zero power signal, and the non-zero power signal can be used for channel measurement of the Resource; the channel state information interference measurement reference signal resource may also be referred to as CSI-IMResource Setting, and is used for transmitting a zero-power signal, that is, not transmitting a signal, and other TRPs may transmit a signal on the resource, so that interference measurement may be performed on the resource.
In this step, N sets of resources for CSI measurement corresponding to the N TPRs are respectively configured through a resource indication field in one CSI report configuration message, so that it is avoided that the CSI report configuration messages of the N TPRs are respectively and independently transmitted, thereby reducing resources occupied by the CSI report configuration messages and reducing overhead.
And 102, sending a CSI report message, wherein the report message comprises a CSI bearing field, and the CSI bearing field is used for carrying target CSI obtained according to the measurement of the N groups of resources.
In addition, the terminal may perform Single-TRP (Single TRP) transmission by using one TRP, Multi-TRP (multiple TRP) transmission by using at least two TRPs, or Single-TRP/Multi-TRP adaptive transmission.
For Multi-TRP Transmission and Single-TRP/Multi-TRP adaptive Transmission, the TRP may perform DPS (Dynamic Point Select) Transmission or JT (Joint Transmission) Transmission.
In the prior art, for Multi-TRP transmission and Single-TRP/Multi-TRP adaptive transmission, since a terminal cannot feed back measured CSI, a network-side device cannot select a transmission mode with better performance from DPS and JT transmission modes for signal transmission, thereby reducing the performance of signal transmission between the terminal and the network-side device in the prior art.
As an optional implementation manner, the CSI report configuration message further includes a first type indication field, where the first type indication field is used to indicate a CSI type, and the type of the target CSI is a CSI type indicated by the first type indication field.
That is, the network side may instruct the terminal to measure the CSI of a specific type, and the terminal may determine the type of the CSI to be measured according to the first type indication field.
And after receiving the CSI report configuration message, the terminal performs CSI measurement according to the CSI type indicated by the first type indication field, and the terminal does not measure the CSI type which is not indicated.
The method can improve the pertinence of CSI measurement and avoid invalid measurement.
In this embodiment, the network side device indicates the type of the target CSI measured by the terminal through the first type indication field in the CSI report configuration message sent by the network side device. The terminal can only measure and report the indicated types of the CSI, so that the terminal is prevented from measuring the CSI of each type respectively to waste time and increase the cost of measuring the CSI.
As an optional implementation manner, the CSI report message further includes a second type indication field, where the second type indication field is used to indicate a CSI type of the target CSI.
And the terminal reports the CSI type of the target CSI, so that after receiving the target CSI, the network side equipment selects one or more appropriate TRPs to perform signal transmission according to the CSI type.
For example: and the network side equipment judges the efficiency, the communication quality and the like of each TRP according to the received target CSI and the CSI type thereof, and selects a proper TRP to perform signal transmission with the terminal according to the judgment result.
The difference from the previous embodiment is that in this embodiment, the network side device does not need to indicate the CSI type of the target CSI in the configuration information, but the terminal directly reports the CSI type of the target CSI. Therefore, after the network side equipment receives the target CSI, one or more appropriate TRPs are selected according to the CSI type of the target CSI for signal transmission, and the situation that the network side equipment confuses the CSI type of the target CSI to influence the accuracy of the judgment result is avoided.
In this way, the terminal can autonomously decide the type of the CSI reported by the terminal, thereby avoiding invalid reporting.
For example, assuming that the terminal only supports DPS transmission but not JT transmission, the terminal only needs to report CSI corresponding to the DPS transmission mode, but does not need to report CSI corresponding to JT transmission.
Wherein the CSI type may include at least one of the following types: CSI during transmission by using single TPR and CSI during transmission by using multiple TPRs;
or
The CSI type includes at least one of the following types: CSI when transmitting using single TPR, CSI when DPS transmission is performed using multi-TPR, and CSI when joint transmission is performed using multi-TPR.
For example: as shown in fig. 2, 4 base stations TRP1, TRP2, TRP3, and TRP4 are provided in a cell, and Multi-TRP transmission can be performed with a terminal through TRP1 and TRP 2.
Wherein TRP1 comprises resources: NZP CSI-RS Resource Setting1 and CSI-IM Resource Setting 1. TRP2 includes resources: NZP CSI-RS Resource Setting2 and CSI-IM Resource Setting 2.
The types of the CSI include CSI 1 measured when only single-point transmission is performed with TRP1, CSI 2 measured when only single-point transmission is performed with TRP2, and CSI 3 measured when multipoint transmission is performed with TRP1 and TRP 2.
Wherein, CSI 1 can be measured by:
the terminal uses NZP CSI-RS Resource Setting1 to perform Channel Measurement on TRP1 (Channel Measurement, for example, TRP1 sends a non-zero power reference signal on the Resource), uses CSI-IM Resource Setting1 to perform Interference Measurement on TRP1 (Interference Measurement, for example, TRP1 sends a zero power reference signal on the Resource, namely, no signal, other TRP or cell may signal on the Resource), and calculates CSI 1 of single-point transmission with TRP1 according to the results of the Channel Measurement and the Interference Measurement.
In addition, CSI 2 may be measured by:
the terminal uses NZP CSI-RS Resource Setting2 to perform Channel Measurement on the TRP2 (Channel Measurement, for example, the TRP2 sends a non-zero power reference signal on the Resource), uses CSI-IM Resource Setting2 to perform Interference Measurement on the TRP2 (Interference Measurement, for example, the TRP2 sends a zero power reference signal on the Resource, namely no signal, other TRPs or cells may signal on the Resource), and calculates the CSI 2 of single-point transmission with the TRP2 according to the results of the Channel Measurement and the Interference Measurement.
In addition, CSI 3 may be measured by:
the terminal carries out channel measurement during multi-point transmission (namely multi-point transmission is carried out on TRP1 and TRP 2) by using NZP CSI-RS Resource Setting1 and NZP CSI-RS Resource Setting2, interference measurement during multi-point transmission is carried out by using CSI-IM Resource Setting1 and CSI-IM Resource Setting2, and CSI 3 during multi-point transmission is calculated by using TRP1 and TRP2 according to the results of the channel measurement and the interference measurement.
Specifically, the CSI includes a CQI (Channel Quality Indicator) as an example. The terminal can measure the interference of other TRPs except TRP1 based on CSI-IM Resource Setting1 (as shown in figure 3: I0+ I2, wherein I2 represents the interference of TRP2, I0 represents the interference of other TRPs except TRP1 and TRP 2); and measuring the interference of other TRPs except TRP2 based on CSI-IM Resource Setting2 (as shown in figure 3: I0+ I1, wherein I1 represents the interference of TRP 1); and the terminal may obtain the measurement based on some other PDSCH (Physical downlink shared Channel) on which all TRPs may be signaled as shown in fig. 3: i0+ I1+ I2. Then combining: the values of I0+ I2, I0+ I1 and I0+ I1+ I2 are calculated to obtain the specific value of I _ 0.
In addition, the terminal may also measure the first channel measurement S1 when the DPS transmission is performed only with TRP1 based on the NZP CSI-RS Resource Setting1, and calculate CSI 1 when the DPS transmission is performed only with TRP1 in combination with the interference measurement result thereof.
For example, by the formula: and calculating the specific value of CQI 1 by S1/I0+ n. Where n is a noise parameter.
And the terminal measures a second channel measurement S2 when DPS transmission is performed only with TRP2 based on NZP CSI-RS Resource Setting2, and calculates CSI 2 when DPS transmission is performed only with TRP2 by combining the interference measurement result.
And by the formula: and calculating the specific value of CQI 2 by S2/I0+ n. Where n is a noise parameter.
In addition, the terminal may also measure a third channel measurement when JT transmission is performed using TRP1 and TRP2 based on NZP CSI-RS Resource Setting1 and NZP CSI-RS Resource Setting2 (S1+ S2), and calculate CSI 3 when joint transmission is performed using TRP1 and TRP2 in combination with the interference measurement result thereof.
And by the formula: CQI 3 ═ S1+ S2)/I0+ n, and a specific value of CQI 3 was calculated. Where n is a noise parameter.
Finally, the maximum value among CQI 1, CQI 2, and CQI 3 can be selected to derive the transmission mode with the best communication quality among DPS transmission with TRP1, DPS transmission with TRP2, and JT transmission with TRP1 and TRP 2.
Of course, the CSI may include one or more of CRI (CSI-RS Resource Indicator), RI (Rank Indicator), PMI (Pre-coding Matrix Indicator) in addition to the CQI.
The process of calculating CRI, RI, PMI is similar to the process of calculating CQI, and is not repeated here.
In this step, the CSI report message sent by the terminal to the network side device includes the target CSI obtained according to the measurement of the N sets of resources, so that the network side device selects an appropriate TPR and performs signal transmission with the terminal in an appropriate manner according to the target CSI, thereby avoiding a problem of high cost caused by a manner of performing CSI measurement and feeding back CSI for each TRP in the prior art.
In the embodiment of the present invention, a terminal supporting multiple transmission receiving points TPR receives a CSI report configuration message, where the CSI report configuration message includes a resource indication field, the resource indication field is used to indicate N groups of resources, and N is an integer greater than or equal to 2; and sending a CSI report message, wherein the report message comprises a CSI bearing field, and the CSI bearing field is used for carrying target CSI obtained according to the measurement of the N groups of resources. In this way, the terminal can feed back the target CSI of the N TRPs only through one CSI report configuration message, thereby avoiding the problem of high cost caused by that the N TRPs respectively send the CSI configuration information to the terminal.
Please refer to fig. 4, which is a flowchart illustrating a configuration method according to an embodiment of the present invention. The configuration method is applied to a network side device, and as shown in fig. 4, the configuration method includes the following steps:
The N sets of resources correspond to N transmission reception points TRP one to one, and the CSI report configuration message is the same as the CSI report configuration message in the CSI report method shown in fig. 1 and plays the same role.
The CSI report message is the same as the CSI report message in the CSI reporting method shown in fig. 1, and plays the same role.
Optionally, the formulation method further comprises the steps of:
selecting a target TRP for transmission according to the target CSI.
Wherein the target TRP may be one or more TRPs selected to have the best performance according to the target CS.
For example: the target CSI is a CQI obtained by performing channel measurement on the N TRPs, and the target TRP may be one or more of the N TRPs having the best transmission quality.
Of course, it may also be one or more of the N TRPs that have the other better properties, for example: the transmission efficiency is highest.
In this embodiment, the network side device selects a target TRP with a better CSI parameter for transmission according to the target CSI reported by the terminal, thereby improving the transmission performance between the network side device and the terminal.
Optionally, each set of resources includes non-zero power channel state information reference signal resources and/or channel state information interference measurement reference signal resources.
Optionally, the CSI report configuration message further includes a first type indication field, where the first type indication field is used to indicate a CSI type, and the type of the target CSI is the CSI type indicated by the first type indication field.
The first type indication field is the same as the first type indication field in the CSI reporting method in fig. 1, and has the same beneficial effect.
Optionally, the CSI report message further includes a second type indication field, where the second type indication field is used to indicate a CSI type of the target CSI.
The second type indication field is the same as the second type indication field in the CSI reporting method in fig. 1, and has the same beneficial effect.
Optionally, the CSI type includes at least one of the following types: CSI during transmission by using single TPR and CSI during transmission by using multiple TPRs;
or
The CSI type includes at least one of the following types: CSI when transmitting using single TPR, CSI when DPS transmission is performed using multi-TPR, and CSI when joint transmission is performed using multi-TPR.
The CSI types are the same as the CSI types in the CSI reporting method in fig. 1, and have the same beneficial effects.
The embodiment of the present invention corresponds to each step in the CSI reporting method shown in fig. 1, and can obtain the same beneficial effects, and for avoiding repetition, the details are not repeated herein.
It should be noted that the CSI reporting method shown in fig. 1 and the configuration method shown in fig. 4 may cooperate with each other, so that after the network side device sends the configuration information to the terminal, the terminal detects the CSI of the corresponding TRP according to the received configuration information.
For example, a flow chart of a CSI configuration and reporting method as provided in fig. 5. The CSI configuration and reporting method comprises the following steps:
The network side device may further select a target TRP for transmission according to the target CSI.
In addition, the CSI report message may be any one or more of CQI, CRI, RI, PMI, and the like obtained by performing channel measurement and/or interference measurement on the TRP indicated in the CSI report configuration message.
Moreover, the network side device may configure the terminal to measure and report only the CSI of the target CSI type. Or the terminal may autonomously decide to report only the CSI of the target CSI type to the network side device.
Wherein the type of the CSI may include at least one of the following types: CSI during transmission by using single TPR and CSI during transmission by using multiple TPRs;
or
The CSI type includes at least one of the following types: CSI when transmitting using single TPR, CSI when DPS transmission is performed using multi-TPR, and CSI when joint transmission is performed using multi-TPR.
The CSI configuration and reporting method provided in the embodiment of the present invention can implement the steps in the method embodiments shown in fig. 1 and fig. 2, and can obtain the same beneficial effects, and in order to avoid repetition, the details are not repeated herein.
Fig. 6 is a structural diagram of a first terminal according to an embodiment of the present invention. The first terminal 600 supports multiple transmission reception points TPR, as shown in fig. 6, the first terminal 600 comprises a processor 601 and a transceiver 602:
the transceiver 602 is configured to receive a CSI report configuration message, where the CSI report configuration message includes a resource indication field, where the resource indication field is used to indicate N sets of resources, where N is an integer greater than or equal to 2;
the transceiver 602 is further configured to send a CSI report message, where the report message includes a CSI bearer field, and the CSI bearer field is used to carry target CSI obtained according to the measurement of the N sets of resources.
The N sets of resources correspond to the N transmission reception points TRP one to one.
In addition, the CSI report message transmitted by the transceiver 602 may be derived by the first processor 601 through channel measurement and/or interference measurement.
Optionally, the CSI report configuration message further includes a first type indication field, where the first type indication field is used to indicate a CSI type, and the type of the target CSI is the CSI type indicated by the first type indication field.
Optionally, the CSI report message further includes a second type indication field, where the second type indication field is used to indicate a CSI type of the target CSI.
Optionally, each set of resources includes non-zero power channel state information reference signal resources and/or channel state information interference measurement reference signal resources.
Optionally, the CSI type includes at least one of the following types: CSI during transmission by using single TPR and CSI during transmission by using multiple TPRs;
or
The CSI type includes at least one of the following types: CSI when transmitting using single TPR, CSI when DPS transmission is performed using multi-TPR, and CSI when joint transmission is performed using multi-TPR.
The first terminal provided in the embodiment of the present invention can implement each process executed by the terminal in the CSI reporting method shown in fig. 1, and can obtain the same beneficial effects, and for avoiding repetition, details are not described here again.
Fig. 7 is a structural diagram of a second terminal according to an embodiment of the present invention. The second terminal 700 supports multiple transmission reception points TPR, as shown in fig. 7, the second terminal 700 includes:
a first receiving module 701, configured to receive a CSI report configuration message, where the CSI report configuration message includes a resource indication field, and the resource indication field is used to indicate N sets of resources, where N is an integer greater than or equal to 2;
a first sending module 701, configured to send a CSI report message, where the report message includes a CSI carrying field, and the CSI carrying field is used to carry target CSI obtained according to the measurement of the N sets of resources.
The N sets of resources correspond to the N transmission reception points TRP one to one.
Optionally, the CSI report configuration message further includes a first type indication field, where the first type indication field is used to indicate a CSI type, and the type of the target CSI is the CSI type indicated by the first type indication field.
Optionally, the CSI report message further includes a second type indication field, where the second type indication field is used to indicate a CSI type of the target CSI.
Optionally, each set of resources includes non-zero power channel state information reference signal resources and/or channel state information interference measurement reference signal resources.
Optionally, the CSI type includes at least one of the following types: CSI during transmission by using single TPR and CSI during transmission by using multiple TPRs;
or
The CSI type includes at least one of the following types: CSI when transmitting using single TPR, CSI when DPS transmission is performed using multi-TPR, and CSI when joint transmission is performed using multi-TPR.
The second terminal provided in the embodiment of the present invention can implement each process executed by the terminal in the CSI reporting method shown in fig. 1, and can obtain the same beneficial effects, and is not described herein again to avoid repetition.
Please refer to fig. 8, which is a structural diagram of a third terminal according to an embodiment of the present invention. As shown in fig. 8, the third terminal 800 supports multiple transmission reception points TPR, and the third terminal 800 includes: a transceiver 801, a memory 802, a processor 803, and a computer program stored on the memory 802 and executable on the processor 806.
The transceiver 801 is configured to receive a CSI report configuration message, where the CSI report configuration message includes a resource indication field, and the resource indication field is used to indicate N sets of resources, where N is an integer greater than or equal to 2.
The processor 803 is configured to generate a CSI report message according to the CSI report configuration message, where the report message includes a CSI bearer field, and the CSI bearer field is used to carry target CSI obtained according to the measurement of the N sets of resources.
The transceiver 801 is used to transmit CSI report messages.
The N sets of resources correspond to the N transmission reception points TRP one to one.
The third terminal provided in the embodiment of the present invention can implement each step in the CSI reporting method shown in fig. 1, and can obtain the same beneficial effects, and is not described herein again to avoid repetition.
Fig. 9 is a structural diagram of a first network-side device according to an embodiment of the present invention. As shown in fig. 9, the first network-side device 900 includes a processor 901 and a transceiver 902:
the transceiver 902 is configured to send a CSI report configuration message, where the CSI report configuration message includes a resource indication field, where the resource indication field is used to indicate N sets of resources, where N is an integer greater than or equal to 2;
the transceiver 902 is further configured to receive a CSI report message sent by a terminal supporting multiple transmission reception points TPR, where the CSI report message includes a CSI bearer field, and the CSI bearer field is used to carry target CSI obtained according to the measurement of the N sets of resources.
The N sets of resources correspond to the N transmission reception points TRP one to one.
In addition, the CSI report configuration message may be generated by the processor 901.
Optionally, the processor 901 is configured to select a target TRP for transmission according to the target CSI.
Optionally, each set of resources includes non-zero power channel state information reference signal resources and/or channel state information interference measurement reference signal resources.
Optionally, the CSI report configuration message further includes a first type indication field, where the first type indication field is used to indicate a CSI type, and the type of the target CSI is the CSI type indicated by the first type indication field.
Optionally, the CSI report message further includes a second type indication field, where the second type indication field is used to indicate a CSI type of the target CSI.
Optionally, the CSI type includes at least one of the following types: CSI during transmission by using single TPR and CSI during transmission by using multiple TPRs;
or
The CSI type includes at least one of the following types: CSI when transmitting using single TPR, CSI when DPS transmission is performed using multi-TPR, and CSI when joint transmission is performed using multi-TPR.
The first network-side device provided in the embodiment of the present invention can implement each process of the configuration method shown in fig. 4, and can obtain the same beneficial effects, and is not described herein again to avoid repetition.
Fig. 10 is a structural diagram of a second network-side device according to an embodiment of the present invention. As shown in fig. 10, the second network-side device 1000 includes:
a second sending module 1001, configured to send a CSI report configuration message, where the CSI report configuration message includes a resource indication field, and the resource indication field is used to indicate N sets of resources, where the N sets of resources are in one-to-one correspondence with N transmission receiving points TRP, and N is an integer greater than or equal to 2;
a second receiving module 1002, configured to receive a CSI report message sent by a terminal that supports multiple transmission reception points TPR, where the CSI report message includes a CSI bearer field, and the CSI bearer field is used to carry target CSI obtained according to the measurement of the N sets of resources.
Optionally, the second network-side device 1000 further includes:
a selection module for selecting a target TRP for transmission according to the target CSI.
Optionally, each set of resources includes non-zero power channel state information reference signal resources and/or channel state information interference measurement reference signal resources.
Optionally, the CSI report configuration message further includes a first type indication field, where the first type indication field is used to indicate a CSI type, and the type of the target CSI is the CSI type indicated by the first type indication field.
Optionally, the CSI report message further includes a second type indication field, where the second type indication field is used to indicate a CSI type of the target CSI.
Optionally, the CSI type includes at least one of the following types: CSI during transmission by using single TPR and CSI during transmission by using multiple TPRs;
or
The CSI type includes at least one of the following types: CSI when transmitting using single TPR, CSI when DPS transmission is performed using multi-TPR, and CSI when joint transmission is performed using multi-TPR.
The second network-side device provided in the embodiment of the present invention can implement each process of the configuration method shown in fig. 4, and can obtain the same beneficial effects, and is not described herein again to avoid repetition.
Fig. 11 is a structural diagram of a third network-side device according to an embodiment of the present invention. As shown in fig. 11, the third network-side device 1100 includes: a transceiver 1101, a memory 1102, a processor 1103, and a computer program stored on the memory 1102 and executable on the processor 1103.
The processor 1103 is configured to generate a CSI report configuration message, where the CSI report configuration message includes a resource indication field, and the resource indication field is used to indicate N sets of resources, where N is an integer greater than or equal to 2.
The transceiver 1101 is configured to transmit the CSI report configuration message.
The transceiver 1101 is further configured to receive a CSI report message sent by a terminal supporting multiple transmission reception points TPR, where the CSI report message includes a CSI bearer field, and the CSI bearer field is used to carry target CSI obtained according to the measurement of the N sets of resources.
The N sets of resources correspond to the N transmission reception points TRP one to one.
Optionally, the processor 1103 is further configured to select a target TRP for transmission according to the target CSI.
The third network side device provided in the embodiment of the present invention can implement each step in the configuration method shown in fig. 4, and can obtain the same beneficial effects, and is not described herein again to avoid repetition.
An embodiment of the present invention further provides a computer storage medium, where a computer program is stored on the computer readable storage medium, and when the computer program is executed by a processor, the steps of the CSI reporting method shown in fig. 1 are implemented; or the steps of the configuration method as shown in fig. 4; or the steps of the CSI configuration and reporting method as shown in fig. 4, and the same beneficial effects can be achieved, and are not described herein again to avoid repetition.
In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is merely a logical division, and in actual implementation, there may be other divisions, for example, multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute the CSI reporting method or part of the configuration method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (25)
1. A CSI reporting method for a terminal supporting multiple transmission reception points (TPR), the reporting method comprising:
receiving a CSI report configuration message, wherein the CSI report configuration message comprises a resource indication field, the resource indication field is used for indicating N groups of resources, and N is an integer greater than or equal to 2;
and sending a CSI report message, wherein the report message comprises a CSI bearing field, and the CSI bearing field is used for carrying target CSI obtained according to the measurement of the N groups of resources.
2. The CSI reporting method of claim 1, wherein the CSI reporting configuration message further comprises a first type indication field for indicating a CSI type, and wherein the type of the target CSI is the CSI type indicated by the first type indication field.
3. The CSI reporting method of claim 1, wherein the CSI report message further comprises a second type indication field for indicating a CSI type of the target CSI.
4. The CSI reporting method according to claim 1, wherein each set of resources comprises non-zero power channel state information reference signal resources and/or channel state information interference measurement reference signal resources.
5. The CSI reporting method according to claim 2 or 3, characterized in that:
the CSI type includes at least one of the following types: CSI during transmission by using single TPR and CSI during transmission by using multiple TPRs;
or
The CSI type includes at least one of the following types: CSI when transmitting using single TPR, CSI when DPS transmission is performed using multi-TPR, and CSI when joint transmission is performed using multi-TPR.
6. A configuration method is used for a network side device, and is characterized in that the configuration method comprises the following steps:
sending a CSI report configuration message, wherein the CSI report configuration message comprises a resource indication field, the resource indication field is used for indicating N groups of resources, and N is an integer greater than or equal to 2;
and receiving a CSI report message sent by a terminal supporting multiple transmission receiving points (TPR), wherein the CSI report message comprises a CSI bearer field, and the CSI bearer field is used for carrying target CSI obtained according to the measurement of the N groups of resources.
7. The method according to claim 6, further comprising, after receiving the CSI report message sent by the terminal:
selecting a target TRP for transmission according to the target CSI.
8. The method according to claim 6, wherein each set of resources comprises non-zero power channel state information reference signal resources and/or channel state information interference measurement reference signal resources.
9. The configuration method according to claim 6, wherein the CSI report configuration message further includes a first type indication field for indicating a CSI type, and the type of the target CSI is the CSI type indicated by the first type indication field.
10. The configuration method according to claim 6, wherein the CSI report message further comprises a second type indication field for indicating a CSI type of the target CSI.
11. The configuration method according to claim 9 or 10, characterized in that:
the CSI type includes at least one of the following types: CSI during transmission by using single TPR and CSI during transmission by using multiple TPRs;
or
The CSI type includes at least one of the following types: CSI when transmitting using single TPR, CSI when DPS transmission is performed using multi-TPR, and CSI when joint transmission is performed using multi-TPR.
12. A terminal supporting multiple transmission reception points, TPR, characterized in that the terminal comprises a first processor and a first transceiver:
the first transceiver is configured to receive a channel state information, CSI, report configuration message, where the CSI report configuration message includes a resource indication field, where the resource indication field is used to indicate N sets of resources, where N is an integer greater than or equal to 2;
the first transceiver is further configured to send a CSI report message, where the report message includes a CSI bearer field, and the CSI bearer field is used to carry target CSI obtained according to the measurement of the N sets of resources.
13. The terminal of claim 12, wherein the CSI report configuration message further comprises a first type indication field, and wherein the first type indication field is used to indicate a CSI type, and wherein the type of the target CSI is the CSI type indicated by the first type indication field.
14. The terminal of claim 12, wherein the CSI report message further comprises a second type indication field, and wherein the second type indication field is used for indicating a CSI type of the target CSI.
15. The terminal according to claim 12, wherein each set of resources comprises non-zero power channel state information reference signal resources and/or channel state information interference measurement reference signal resources.
16. A terminal according to claim 13 or 14, characterized in that:
the CSI type includes at least one of the following types: CSI during transmission by using single TPR and CSI during transmission by using multiple TPRs;
or
The CSI type includes at least one of the following types: CSI when transmitting using single TPR, CSI when DPS transmission is performed using multi-TPR, and CSI when joint transmission is performed using multi-TPR.
17. A network-side device, comprising a second processor and a second transceiver:
the second transceiver is configured to transmit a channel state information, CSI, report configuration message, where the CSI report configuration message includes a resource indication field, where the resource indication field is used to indicate N sets of resources, where N is an integer greater than or equal to 2;
the second transceiver is further configured to receive a CSI report message sent by a terminal that supports multiple transmission reception points TPR, where the CSI report message includes a CSI bearer field, and the CSI bearer field is used to carry target CSI obtained according to the measurement of the N sets of resources.
18. The network-side device of claim 17, wherein:
the second processor is configured to select a target TRP for transmission in accordance with the target CSI.
19. The network side device of claim 17, wherein each set of resources comprises non-zero power channel state information reference signal resources and/or channel state information interference measurement reference signal resources.
20. The network-side device of claim 17, wherein the CSI report configuration message further includes a first type indication field, and wherein the first type indication field is used to indicate a CSI type, and the type of the target CSI is a CSI type indicated by the first type indication field.
21. The network-side device of claim 17, wherein the CSI report message further comprises a second type indication field, and wherein the second type indication field is used for indicating a CSI type of the target CSI.
22. The network-side device according to claim 20 or 21, wherein:
the CSI type includes at least one of the following types: CSI during transmission by using single TPR and CSI during transmission by using multiple TPRs;
or
The CSI type includes at least one of the following types: CSI when transmitting using single TPR, CSI when DPS transmission is performed using multi-TPR, and CSI when joint transmission is performed using multi-TPR.
23. A terminal, comprising: a first memory, a third processor and a first computer program stored on the first memory and executable on the third processor, the first computer program, when executed by the third processor, implementing the steps of the CSI reporting method according to any of claims 1 to 5.
24. A network-side device, comprising: second memory, a fourth processor and a second computer program stored on the second memory and executable on the fourth processor, the second computer program, when executed by the fourth processor, implementing the steps of the configuration method according to any one of claims 6 to 11.
25. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a third computer program which, when being executed by a fifth processor, carries out the steps of the CSI reporting method according to any of claims 1 to 5; or the steps of the method of configuration of any of claims 6 to 11.
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| CN201910014496.0A CN111416644B (en) | 2019-01-07 | 2019-01-07 | CSI reporting method, configuration method, terminal and network side equipment |
| PCT/CN2020/070654 WO2020143613A1 (en) | 2019-01-07 | 2020-01-07 | Csi reporting method, configuration method, terminal, and network side device |
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| CN201910014496.0A CN111416644B (en) | 2019-01-07 | 2019-01-07 | CSI reporting method, configuration method, terminal and network side equipment |
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| CN111416644B (en) | 2021-11-09 |
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