Method and apparatus for CSI measurement in node used for wireless communication

Abstract

The invention discloses a method and an apparatus for CSI measurement in a node used for wireless communication. A first node receives a first CSI reporting configuration, wherein the first CSI reporting configuration indicates a first CSI-RS resource set for channel measurement; the first CSI reporting configuration is used for configuring reporting of CSI of which the number of ports is P; and sending the first CSI. In the two conditions that P is equal to the number of ports of one CSI-RS resource in the first CSI-RS resource set and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the first CSI-RS resource set is sent to the first CSI-RS resource set, and the second CSI-RS resource set is sent to the second CSI-RS resource set. The channel measurements obtained for a first CSI-RS resource are used to calculate the first CSI after the scaling power.

Description

Technical Field

[0001] The present application relates to a transmission method and apparatus in a wireless communication system, and in particular to a CSI (Channel State Information) measurement scheme and apparatus in a wireless communication system. Background Art

[0002] In wireless communication systems supporting MIMO (Multiple-Input Multiple-Output), it is a common technique for the UE (User Equipment) to generate and feedback CSI (Channel Status Information) based on channel and / or interference measurements to assist the base station in multi-antenna processing. In 5G (the 5th generation) NR (new radio) systems, to enable the base station to obtain accurate CSI, the base station configures the UE with NZP (Non-Zero Power) CSI-RS (Channel State Information Reference Signal) resources for channel measurement and CSI-IM (Channel State Information–Interference Measurement) resources for interference measurement. In addition, NZP CSI-RS resources for interference measurement can also be configured. In existing 3GPP Release 18 and earlier standards, the number of ports of a CSI-RS resource configured by the base station for channel measurement for the UE is the same as the number of ports for which the CSI feedback is intended.

[0003] To improve coverage and achieve greater spectral efficiency, larger antenna arrays with more antennas have attracted significant industry interest. To this end, the 3rd Generation Partnership Project (3GPP) RAN#94 meeting approved the "NR MIMO Phase 5" work item (WI). Among these, the design of CSI measurement and reporting for a larger number of CSI-RS ports (up to 128) is a key issue to be addressed.

[0004] In addition, for future communication systems (such as 6G), the use of ultra-large antenna arrays is also an effective technology to solve coverage and improve spectrum efficiency. How to design CSI measurement and reporting for an ultra-large number of CSI-RS ports (maximum value equal to or greater than 128) is a key issue to be solved. Summary of the Invention

[0005] In existing systems, the UE determines CSI (Channel State Information) reporting based on the CSI reporting configuration and RS (Reference Signal) resources. The calculation of a CSI report is based on channel measurements in at least one CSI-RS opportunity no later than the CSI reference resource. A key issue is how channel measurements are used to calculate CSI, for situations where the number of ports targeted by the CSI is equal to or greater than the number of ports in a CSI-RS resource.

[0006] In response to the above problems, the present application discloses a solution. It should be noted that although the above description uses 5G network as an example, the present application is also applicable to future networks (such as 6G, etc.) or other scenarios facing similar problems (for example, there are scenarios where the link direction changes, or other scenarios that support multi-level configuration of transmission direction, or base stations or user equipment with stronger capabilities, such as scenarios that support full-duplex at the same frequency, or for different application scenarios, such as mobile broadband, ultra-reliable low-latency communication, large-scale machine communication, non-terrestrial network, synaesthesia integrated network, smart metasurface, terahertz network, similar technical effects can also be achieved. In addition, the use of a unified solution for different networks or different scenarios (including but not limited to mobile broadband, ultra-reliable low-latency communication, large-scale machine communication, non-terrestrial network, synaesthesia integrated network, smart metasurface, terahertz network scenarios) also helps to reduce hardware complexity and cost. In the absence of conflict, the embodiments of any node in the present application and the features in the embodiments can be applied to any other node, and vice versa. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

[0007] The present application discloses a method in a first node used for wireless communication, characterized by comprising:

[0008] receiving a first CSI reporting configuration, where the first CSI reporting configuration indicates a first CSI-RS resource set for channel measurement, where the first CSI-RS resource set includes multiple CSI-RS resources; the first CSI reporting configuration is used to configure reporting of CSI with a port number P, where P is a positive integer greater than 1; the P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, or the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set;

[0009] Sending a first CSI; the first CSI is the CSI configured by the first CSI reporting configuration for a port number P;

[0010] The channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI, or the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after scaling power; the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource set; in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after scaling power.

[0011] As an embodiment, the problem to be solved by the present application includes: how to use the channel measurement obtained for one CSI-RS resource to calculate the CSI for different cases of the number of ports targeted by the CSI.

[0012] As an embodiment, in the above method, when the number of ports targeted by the CSI is greater than the number of ports of the CSI-RS resources, the channel measurement is appropriately scaled to calculate accurate CSI.

[0013] As an embodiment, the advantage of adopting the above method is that, unlike the current standard where the number of ports targeted by CSI is equal to the number of ports of configured CSI-RS resources, it also supports the situation where the number of ports targeted by CSI is greater than the number of ports of configured CSI-RS resources.

[0014] As an embodiment, the benefit of adopting the above method is that it simplifies system design.

[0015] As an embodiment, the advantage of adopting the above method is that it has good compatibility with the standard and makes minor changes to the standard.

[0016] As an embodiment, the advantage of adopting the above method is that the CSI calculation is flexibly adjusted by scaling the channel measurement power.

[0017] As an embodiment, the advantage of adopting the above method is that the accuracy of CSI is improved.

[0018] As an embodiment, the benefit of adopting the above method is that the transmission efficiency is improved.

[0019] As an embodiment, the benefit of adopting the above method is that the transmission capacity is improved.

[0020] As an embodiment, the benefit of adopting the above method is that the system performance is improved.

[0021] According to one aspect of the present application, it is characterized in that the first CSI indicates the first CSI-RS resource, and the P is equal to the port number of the first CSI-RS resource; or, the first CSI indicates a first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the total port number of all CSI-RS resources in the first CSI-RS resource group is equal to the P, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0022] As an embodiment, the advantage of adopting the above method is that it simplifies the design of CSI-RS resources.

[0023] As an embodiment, the advantage of adopting the above method is that it avoids designing a CSI-RS resource with a larger number of ports (such as 128 or more), but realizes the measurement and reporting of CSI with a larger number of ports (such as 128 or more).

[0024] As an embodiment, the advantage of adopting the above method is that it supports combining multiple CSI-RS resources into a CSI-RS resource with a larger number of ports (such as 128 or larger) for measuring channel information of a larger number of ports (such as up to 128 or larger).

[0025] As an embodiment, the benefit of adopting the above method is that it simplifies system design.

[0026] As an embodiment, the advantage of adopting the above method is that it has good compatibility with the standard and makes minor changes to the standard.

[0027] As an embodiment, the advantage of adopting the above method is that the accuracy of CSI is improved.

[0028] As an embodiment, the benefit of adopting the above method is that the transmission efficiency is improved.

[0029] As an embodiment, the benefit of adopting the above method is that the transmission capacity is improved.

[0030] As an embodiment, the benefit of adopting the above method is that the system performance is improved.

[0031] According to one aspect of the present application, it is characterized in that the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power, including: the channel measurement obtained for the first CSI-RS resource minus a first coefficient is used to calculate the first CSI, and the unit of the first coefficient is dB; the first coefficient is configurable or predefined, or the first coefficient is equal to the ratio of the CSI-RSEPRE of the first CSI-RS resource to the synchronization signal EPRE.

[0032] As an embodiment, the benefit of adopting the above method is that it simplifies system design.

[0033] As an embodiment, the advantage of adopting the above method is that it has good compatibility with the standard and makes minor changes to the standard.

[0034] As an embodiment, the advantage of adopting the above method is that the power is adjusted by subtracting a coefficient from the channel measurement, thereby flexibly adjusting the CSI calculation.

[0035] As an embodiment, the advantage of adopting the above method is that the channel measurement of a CSI-RS resource is reduced or eliminated by subtracting the ratio of CSI-RS EPRE to synchronization signal EPRE, thereby reducing or eliminating the impact of different CSI-RS EPRE to synchronization signal EPRE ratios on CSI calculation, thereby improving CSI estimation accuracy.

[0036] According to one aspect of the present application, it is characterized in that the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power, including: the channel measurement obtained for the first CSI-RS resource is added with a second coefficient and then used to calculate the first CSI, the unit of the second coefficient is dB; the second coefficient is configurable or predefined, or the second coefficient is equal to a reference value minus the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE.

[0037] As an embodiment, the benefit of adopting the above method is that it simplifies system design.

[0038] As an embodiment, the advantage of adopting the above method is that it has good compatibility with the standard and makes minor changes to the standard.

[0039] As an embodiment, the advantage of adopting the above method is that the CSI calculation is flexibly adjusted by adding a coefficient to the channel measurement to adjust the power.

[0040] As an embodiment, the advantage of adopting the above method is that the channel measurement of a CSI-RS resource is adjusted by adding a coefficient. This coefficient is related to the ratio of CSI-RS EPRE to synchronization signal EPRE, reducing or eliminating the impact of different CSI-RS EPRE to synchronization signal EPRE ratios on CSI calculation, thereby improving CSI estimation accuracy.

[0041] According to one aspect of the present application, it is characterized in that the second coefficient is equal to the reference value minus the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE; the IE used to configure the first CSI-RS resource indicates the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE, and the reference value is indicated by an IE, and the IE indicating the reference value is different from any IE used to configure a CSI-RS resource.

[0042] As an embodiment, the benefit of adopting the above method is that it simplifies system design.

[0043] As an embodiment, the advantage of adopting the above method is that it has good compatibility with the standard and makes minor changes to the standard.

[0044] According to one aspect of the present application, it is characterized in that each CSI-RS resource in the first CSI-RS resource set is configured with a ratio of CSI-RS EPRE to synchronization signal EPRE; the first value set includes the ratio of CSI-RS EPRE to synchronization signal EPRE configured for each CSI-RS resource in the first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group; the reference value is a value in the first value set, or the reference value depends on the first value set.

[0045] As an embodiment, the benefit of adopting the above method is that it simplifies system design.

[0046] As an embodiment, the advantage of adopting the above method is that it has good compatibility with the standard and makes minor changes to the standard.

[0047] According to one aspect of the present application, it is characterized in that when the P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource group is used to calculate the first CSI, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the total number of ports of all CSI-RS resources in the first CSI-RS resource group is equal to the P, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0048] The present application discloses a method used in a second node of wireless communication, characterized by comprising:

[0049] Sending a first CSI reporting configuration, where the first CSI reporting configuration indicates a first CSI-RS resource set for channel measurement, where the first CSI-RS resource set includes multiple CSI-RS resources; the first CSI reporting configuration is used to configure reporting of CSI with a port number P, where P is a positive integer greater than 1; the P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, or the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set;

[0050] Receive first CSI; the first CSI is the CSI configured by the first CSI reporting configuration for a port number P;

[0051] The channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI, or the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after scaling power; the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource set; in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after scaling power.

[0052] According to one aspect of the present application, it is characterized in that the first CSI indicates the first CSI-RS resource, and the P is equal to the port number of the first CSI-RS resource; or, the first CSI indicates a first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the total port number of all CSI-RS resources in the first CSI-RS resource group is equal to the P, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0053] According to one aspect of the present application, it is characterized in that the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power, including: the channel measurement obtained for the first CSI-RS resource minus a first coefficient is used to calculate the first CSI, and the unit of the first coefficient is dB; the first coefficient is configurable or predefined, or the first coefficient is equal to the ratio of the CSI-RSEPRE of the first CSI-RS resource to the synchronization signal EPRE.

[0054] According to one aspect of the present application, it is characterized in that the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power, including: the channel measurement obtained for the first CSI-RS resource is added with a second coefficient and then used to calculate the first CSI, the unit of the second coefficient is dB; the second coefficient is configurable or predefined, or the second coefficient is equal to a reference value minus the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE.

[0055] According to one aspect of the present application, it is characterized in that the second coefficient is equal to the reference value minus the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE; the IE used to configure the first CSI-RS resource indicates the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE, and the reference value is indicated by an IE, and the IE indicating the reference value is different from any IE used to configure a CSI-RS resource.

[0056] According to one aspect of the present application, it is characterized in that each CSI-RS resource in the first CSI-RS resource set is configured with a ratio of CSI-RS EPRE to synchronization signal EPRE; the first value set includes the ratio of CSI-RS EPRE to synchronization signal EPRE configured for each CSI-RS resource in the first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group; the reference value is a value in the first value set, or the reference value depends on the first value set.

[0057] According to one aspect of the present application, it is characterized in that when the P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource group is used to calculate the first CSI, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the total number of ports of all CSI-RS resources in the first CSI-RS resource group is equal to the P, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0058] The present application discloses a first node device used for wireless communication, characterized by comprising:

[0059] A first receiver receives a first CSI reporting configuration, where the first CSI reporting configuration indicates a first CSI-RS resource set for channel measurement, where the first CSI-RS resource set includes multiple CSI-RS resources; the first CSI reporting configuration is used to configure reporting of CSI with a port number P, where P is a positive integer greater than 1; the P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, or the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set;

[0060] A first transmitter sends a first CSI, wherein the first CSI is the CSI configured by the first CSI reporting configuration for a number of ports P;

[0061] The channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI, or the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after scaling power; the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource set; in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after scaling power.

[0062] The present application discloses a second node device used for wireless communication, characterized by comprising:

[0063] A second transmitter sends a first CSI reporting configuration, where the first CSI reporting configuration indicates a first CSI-RS resource set for channel measurement, where the first CSI-RS resource set includes multiple CSI-RS resources; the first CSI reporting configuration is used to configure reporting of CSI with a port number P, where P is a positive integer greater than 1; the P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, or the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set;

[0064] A second receiver receives a first CSI, wherein the first CSI is the CSI configured by the first CSI reporting configuration for a number of ports P;

[0065] The channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI, or the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after scaling power; the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource set; in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after scaling power.

[0066] As an example, compared with traditional solutions, this application has the following advantages:

[0067] - Unlike the current standard where the number of ports targeted by CSI is equal to the number of ports of configured CSI-RS resources, this standard supports the case where the number of ports targeted by CSI is greater than the number of ports of configured CSI-RS resources;

[0068] -When the number of ports targeted by CSI is greater than the number of ports of CSI-RS resources, appropriately scale the channel measurement power to calculate accurate CSI;

[0069] -Simplified the design of CSI-RS resources;

[0070] -Avoids designing a CSI-RS resource with a large number of ports (e.g., 128 or more);

[0071] - It is possible to achieve measurement and reporting of CSI with a larger number of ports (such as 128 or more) while keeping the maximum number of ports of CSI-RS resources supported in the current standard unchanged.

[0072] -Supports combining multiple CSI-RS resources into a CSI-RS resource with a larger number of ports (e.g., 128 or more) for measuring channel information of a larger number of ports (e.g., up to 128 or more);

[0073] -Simplified system design;

[0074] -Good compatibility with the standard, with minor changes to the standard;

[0075] - Reduce or eliminate the impact of different CSI-RS EPRE to synchronization signal EPRE ratios on CSI calculation;

[0076] -Improved the accuracy of CSI;

[0077] -Improved transmission efficiency;

[0078] -Increased transmission capacity.

[0079] -Improved system performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0081] Figure 1 A flowchart of a first CSI reporting configuration and a first CSI according to an embodiment of the present application is shown;

[0082] Figure 2 A schematic diagram showing a network architecture according to an embodiment of the present application is shown;

[0083] Figure 3 A schematic diagram illustrating an embodiment of a radio protocol architecture of a user plane and a control plane according to an embodiment of the present application is shown;

[0084] Figure 4 A schematic diagram showing a first communication device and a second communication device according to an embodiment of the present application is shown;

[0085] Figure 5 A flowchart of wireless transmission according to an embodiment of the present application is shown;

[0086] Figure 6 A schematic diagram showing the relationship between the first CSI and P according to an embodiment of the present application;

[0087] Figure 7 A schematic diagram illustrating that the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the power is scaled according to an embodiment of the present application;

[0088] Figure 8 A schematic diagram illustrating that the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the power is scaled according to another embodiment of the present application;

[0089] Figure 9 FIG2 shows a schematic diagram of a first CSI-RS resource group according to an embodiment of the present application;

[0090] Figure 10 A schematic diagram showing reference values according to an embodiment of the present application;

[0091] Figure 11 A schematic diagram showing reference values according to another embodiment of the present application;

[0092] Figure 12 A schematic diagram showing reference values according to another embodiment of the present application;

[0093] Figure 13 A structural block diagram of a processing device used in a first node device according to an embodiment of the present application is shown;

[0094] Figure 14 A structural block diagram of a processing device used in a second node device according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0095] The technical solution of the present application will be further described in detail below in conjunction with the accompanying drawings. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other in any way.

[0096] Example 1

[0097] Example 1 illustrates a first CSI reporting configuration and a first CSI flow chart according to an embodiment of the present application, as shown in the attached figure. Figure 1 As shown. Figure 1 In the diagram 100, each box represents a step.

[0098] In embodiment 1, the first node in the present application receives a first CSI reporting configuration in step 101; sends a first CSI in step 102; the first CSI reporting configuration indicates a first CSI-RS resource set for channel measurement, and the first CSI-RS resource set includes multiple CSI-RS resources; the first CSI reporting configuration is used to configure reporting of CSI with a port number of P, where P is a positive integer greater than 1; the P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, or the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set; the first CSI is the CSI with a port number of P configured by the first CSI reporting configuration; for the first CSI The channel measurement obtained for the I-RS resource is used to calculate the first CSI, or the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after scaling power; the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource set; in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after scaling power.

[0099] As an embodiment, the port numbers of all CSI-RS resources in the first CSI-RS resource set are the same, and P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set; or, P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set.

[0100] As an embodiment, whether the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power depends on whether P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set.

[0101] As an embodiment, the P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, or the P is equal to the total number of ports of multiple CSI-RS resources in the first CSI-RS resource set.

[0102] As an embodiment, the P is equal to the number of ports of the first CSI-RS resource, or the P is equal to the total number of ports of all CSI-RS resources in the first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group. Typically, the CSI-RS in this application is an NZP (Non-Zero Power) CSI-RS, and the CSI-RS EPRE (Energy per resource element) in this application is an NZP CSI-RS EPRE.

[0103] Typically, any CSI-RS resource in the first CSI-RS (Channel state information reference signal) resource set is an NZP (Non-Zero Power) CSI-RS resource.

[0104] As an embodiment, the first CSI (Channel Status Information) reporting configuration is carried by higher-layer signaling.

[0105] As an embodiment, the first CSI reporting configuration is carried by RRC signaling.

[0106] As an embodiment, the first CSI reporting configuration includes an IE (Information Element).

[0107] As an embodiment, the first CSI reporting configuration includes one or more IEs.

[0108] As an embodiment, the first CSI reporting configuration is IE CSI-ReportConfig.

[0109] As an embodiment, the name of the first CSI reporting configuration includes CSI-ReportConfig.

[0110] As an embodiment, the first CSI reporting configuration indicates a CSI resource configuration, and the one CSI resource configuration indicates the first CSI-RS resource set.

[0111] As a sub-embodiment of the above embodiment, the CSI resource configuration is an IE CSI-ResourceConfig.

[0112] As a sub-embodiment of the above embodiment, the first CSI reporting configuration includes a resourcesForChannelMeasurement field, and the resourcesForChannelMeasurement field included in the first CSI reporting configuration indicates the one CSI resource configuration.

[0113] As a sub-embodiment of the above embodiment, the first CSI reporting configuration includes a resourcesForChannelMeasurement field, and the resourcesForChannelMeasurement field included in the first CSI reporting configuration indicates an identifier or index of the one CSI resource configuration.

[0114] As an embodiment, the first CSI reporting configuration includes a resourcesForChannelMeasurement domain, and the resourcesForChannelMeasurement domain included in the first CSI reporting configuration indicates a CSI resource configuration, and the one CSI resource configuration indicates the first CSI-RS resource set.

[0115] As an embodiment, the first CSI-RS resource set is configured by IE NZP-CSI-RS-ResourceSet.

[0116] As an embodiment, the IE NZP-CSI-RS-ResourceSet indicates the identifier or index of each CSI-RS resource included in the first CSI-RS resource set.

[0117] As an embodiment, the identifier or index of the first CSI reporting configuration is CSI-ReportConfigId.

[0118] As an embodiment, the identifier or index of a CSI-RS resource is NZP-CSI-RS-ResourceId.

[0119] As an embodiment, the identifier or index of the first CSI-RS resource set is NZP-CSI-RS-ResourceSetId.

[0120] As an embodiment, the identifier or index of a CSI resource configuration is CSI-ResourceConfigId.

[0121] As an embodiment, for the specific definitions of IE CSI-ReportConfig, resourcesForChannelMeasurement, and IECSI-ResourceConfig, refer to Section 6.3.2 of 3GPP TS 38.331.

[0122] As an embodiment, the first CSI reporting configuration indicates a first CSI-RS resource set for channel measurement and a second RS resource set for interference measurement; the second RS resource set includes one or more CSI-IM (Channel State Information–Interference Measurement) resources, or the second RS resource set includes one or more CSI-IM resources and one or more NZP CSI-RS resources for interference measurement.

[0123] Typically, CSI-IM is zero power.

[0124] As an embodiment, the first CSI reporting configuration indicates two CSI resource configurations, and the two CSI resource configurations respectively indicate a first CSI-RS resource set for channel measurement and a second RS resource set for interference measurement.

[0125] As an embodiment, the first CSI reporting configuration indicates two CSI resource configurations, and the two CSI resource configurations respectively indicate a first CSI-RS resource set for channel measurement and a second RS resource set for interference measurement; the second RS resource set includes one or more CSI-IM resources.

[0126] As a sub-embodiment of the above embodiment, the two CSI resource configurations are two IE CSI-ResourceConfigs.

[0127] As a sub-embodiment of the above embodiment, the first CSI reporting configuration includes a resourcesForChannelMeasurement field and a csi-IM-ResourcesForInterference field, and the resourcesForChannelMeasurement field and the csi-IM-ResourcesForInterference field included in the first CSI reporting configuration respectively indicate the two CSI resource configurations.

[0128] As an embodiment, the first CSI reporting configuration includes a csi-IM-ResourcesForInterference domain, and the csi-IM-ResourcesForInterference domain included in the first CSI reporting configuration is used to indicate the second RS resource set.

[0129] As an embodiment, the first CSI reporting configuration indicates three CSI resource configurations, one of the three CSI resource configurations indicates a first CSI-RS resource set for channel measurement, and the other two CSI resource configurations of the three CSI resource configurations jointly indicate a second RS resource set for interference measurement; the second RS resource set includes one or more CSI-IM resources and one or more NZP CSI-RS resources for interference measurement.

[0130] As an embodiment, the first CSI reporting configuration indicates three CSI resource configurations, one of the three CSI resource configurations indicates a first CSI-RS resource set for channel measurement, the other two of the three CSI resource configurations jointly indicate a second RS resource set for interference measurement, and the other two CSI resource configurations respectively indicate the CSI-IM resources included in the second RS resource set and the NZP CSI-RS resources included in the second RS resource set for interference measurement.

[0131] As a sub-embodiment of the above embodiment, the three CSI resource configurations are three IE CSI-ResourceConfigs.

[0132] As a sub-embodiment of the above embodiment, the first CSI reporting configuration includes the resourcesForChannelMeasurement domain, the csi-IM-ResourcesForInterference domain and the nzp-CSI-RS-ResourcesForInterference domain, and the resourcesForChannelMeasurement domain, the csi-IM-ResourcesForInterference domain and the nzp-CSI-RS-ResourcesForInterference domain included in the first CSI reporting configuration respectively indicate the three CSI resource configurations.

[0133] As an embodiment, the first CSI reporting configuration includes a csi-IM-ResourcesForInterference domain and a nzp-CSI-RS-ResourcesForInterference domain, and the csi-IM-ResourcesForInterference domain and the nzp-CSI-RS-ResourcesForInterference domain included in the first CSI reporting configuration jointly indicate the second RS resource set.

[0134] As an embodiment, for the specific definitions of IE CSI-ReportConfig, resourcesForChannelMeasurement, csi-IM-ResourcesForInterference, nzp-CSI-RS-ResourcesForInterference, and IE CSI-ResourceConfig, please refer to Section 6.3.2 of 3GPP TS 38.331.

[0135] As an embodiment, the port number of a CSI-RS resource in the first CSI-RS resource set is a positive integer.

[0136] As an embodiment, the port number of a CSI-RS resource in the first CSI-RS resource set is a positive integer not greater than 32.

[0137] As an embodiment, the port number of a CSI-RS resource in the first CSI-RS resource set is a positive integer not greater than the first maximum integer.

[0138] As a sub-embodiment of the above embodiment, the first maximum integer is 32.

[0139] As a sub-embodiment of the above embodiment, the first maximum integer is 64.

[0140] As a sub-embodiment of the above embodiment, the first maximum integer is less than 128.

[0141] As a sub-embodiment of the above embodiment, the first maximum integer is the maximum port number of CSI-RS resources supported in 3GPP Release 18.

[0142] As an embodiment, the number of ports of all CSI-RS resources in the first CSI-RS resource set is the same.

[0143] As an embodiment, there are two CSI-RS resources in the first CSI-RS resource set with different numbers of ports.

[0144] As an embodiment, when the P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the first CSI reporting configuration indicates the P.

[0145] As an embodiment, the P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, or the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set.

[0146] As an embodiment, the P is equal to the number of ports of any CSI-RS resource in the first CSI-RS resource set, or the P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set.

[0147] As an embodiment, the P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, or the first CSI reporting configuration indicates the P, and the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set.

[0148] As an embodiment, the P is equal to the port number of any CSI-RS resource in the first CSI-RS resource set, or the first CSI reporting configuration indicates the P, and the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set.

[0149] As an embodiment, the P depends on the first CSI reporting configuration.

[0150] As an embodiment, the first CSI reporting configuration indicates the P.

[0151] As an embodiment, the first CSI reporting configuration explicitly or implicitly indicates the P.

[0152] As an embodiment, the P depends on whether the first CSI reporting configuration includes a first information block.

[0153] As an embodiment, whether the first CSI reporting configuration includes a first information block is used to determine whether the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set; when the first CSI reporting configuration includes the first information block, the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set; when the first CSI reporting configuration does not include the first information block, the P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set.

[0154] As an embodiment, whether the first CSI reporting configuration includes a first information block is used to determine the value range of P; when the first CSI reporting configuration includes the first information block, the value range of P is a first value range, and the first value range includes one or more positive integers; when the first CSI reporting configuration does not include the first information block, the value range of P is a second value range, and the second value range includes one or more positive integers; the maximum integer in the first value range is greater than the maximum integer in the second value range.

[0155] As an embodiment, the maximum value of P is greater than the maximum number of ports of CSI-RS resources supported in 3GPP Release 18.

[0156] As an embodiment, the maximum value of P is not less than the maximum number of ports of CSI-RS resources supported in 3GPP Release 19.

[0157] As an embodiment, the maximum value of P is greater than 32.

[0158] As an embodiment, the maximum value of P is greater than 64.

[0159] As an embodiment, the maximum value of P is equal to 128.

[0160] As an embodiment, the maximum value of P is greater than 128.

[0161] As an embodiment, whether the first CSI reporting configuration includes a first information block is used to determine whether the maximum value of P is greater than a first maximum integer, where the first maximum integer is a positive integer greater than 1; when the first CSI reporting configuration includes the first information block, the maximum value of P is greater than the first maximum integer; when the first CSI reporting configuration does not include the first information block, the maximum value of P is equal to the first maximum integer.

[0162] As a sub-embodiment of the above embodiment, the first maximum integer is 32.

[0163] As a sub-embodiment of the above embodiment, the first maximum integer is 64.

[0164] As a sub-embodiment of the above embodiment, the first maximum integer is less than 128.

[0165] As a sub-embodiment of the above embodiment, the first maximum integer is the maximum port number of CSI-RS resources supported in 3GPP Release 18.

[0166] As a sub-embodiment of the above embodiment, when the first CSI reporting configuration includes a first information block, the maximum value of P is equal to or greater than 128.

[0167] As an embodiment, the first CSI reporting configuration includes a first information block, and the P depends on the value of the first information block.

[0168] As an embodiment, the dependence of P on the value of the first information block includes: the P is equal to the value of the first information block.

[0169] As an embodiment, the P depends on the value of the first information block, including: whether the P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set depends on the value of the first information block; when the value of the first information block is equal to a first candidate value, the P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set; when the value of the first information block is equal to a second candidate value, the P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set.

[0170] As an embodiment, the dependence of P on the value of the first information block includes: the value range of P depends on the value of the first information block; when the value of the first information block is equal to the first candidate value, the value range of P is the first value range, and the first value range includes one or more positive integers; when the value of the first information block is equal to the second candidate value, the value range of P is the second value range, and the second value range includes one or more positive integers; the maximum integer in the first value range is greater than the maximum integer in the second value range.

[0171] As an embodiment, the dependence of P on the value of the first information block includes: whether the maximum value of P is greater than 32 depends on the value of the first information block; when the value of the first information block is equal to the first candidate value, the maximum value of P is greater than the first maximum integer; when the value of the first information block is equal to the second candidate value, the maximum value of P is equal to the first maximum integer.

[0172] As a sub-embodiment of the above embodiment, the first maximum integer is 32.

[0173] As a sub-embodiment of the above embodiment, the first maximum integer is 64.

[0174] As a sub-embodiment of the above embodiment, the first maximum integer is less than 128.

[0175] As a sub-embodiment of the above embodiment, when the value of the first information block is equal to the first candidate value, the maximum value of P is equal to or greater than 128.

[0176] As an embodiment, the first information block includes a field in the first CSI reporting configuration.

[0177] As an embodiment, the first information block includes one or more fields in the first CSI reporting configuration.

[0178] As an embodiment, at least one field in the first CSI reporting configuration indicates the first information block.

[0179] As an embodiment, the IE CSI-ResourceConfig indicating the first CSI-RS resource set includes the first information block.

[0180] The first CSI reporting configuration indicates a CSI resource configuration, the one CSI resource configuration indicates the first CSI-RS resource set, and the one CSI resource configuration includes the first information block.

[0181] As an embodiment, the IE NZP-CSI-RS-ResourceSet used to configure the first CSI-RS resource set includes the first information block.

[0182] Example 2

[0183] Example 2 illustrates a schematic diagram of a network architecture according to an embodiment of the present application, as shown in the attached diagram. Figure 2 shown.

[0184] Attachment Figure 2 The present invention illustrates a network architecture 200 for LTE (Long-Term Evolution), LTE-A (Long-Term Evolution Advanced), and future 5G systems. The network architecture 200 for LTE, LTE-A, and future 5G systems is referred to as EPS (Evolved Packet System) 200. 5G NR or LTE network architecture 200 may be referred to as 5GS (5G System) / EPS (Evolved Packet System) 200 or some other appropriate terminology. 5GS / EPS 200 may include one or more UEs (User Equipment) 201, a UE 241 communicating with the UE 201 via a sidelink, an NG-RAN (Next Generation Radio Access Network) 202, a 5G Core Network (5G Core Network) / EPC (Evolved Packet Core) 210, an HSS (Home Subscriber Server) / UDM (Unified Data Management) 220, and an Internet service 230. The 5GS / EPS 200 may be interconnected with other access networks, but for simplicity, these entities / interfaces are not shown. Figure 2As shown, the 5GS / EPS 200 provides packet-switched services, however, those skilled in the art will readily appreciate that the various concepts presented throughout this application can be extended to networks providing circuit-switched services. NG-RAN 202 includes NR (New Radio) Node B (gNB) 203 and other gNBs 204. gNB 203 provides user and control plane protocol termination towards UE 201. gNB 203 can be connected to other gNBs 204 via an Xn interface (e.g., backhaul). gNB 203 may also be referred to as a base station, base transceiver station, radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), TRP (transmit receive point), or some other appropriate terminology. gNB 203 provides an access point to the 5GC / EPC 210 for UE 201. Examples of UE 201 include cellular phones, smart phones, Session Initiation Protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, drones, aircraft, narrowband physical network devices, machine type communication devices, land vehicles, cars, wearable devices, or any other similarly functional devices. Those skilled in the art may also refer to UE 201 as a mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology. The gNB 203 connects to the 5GC / EPC 210 via the S1 / NG interface. The 5GC / EPC 210 includes the MME (Mobility Management Entity) / AMF (Authentication Management Field) / SMF (Session Management Function) 211, other MMEs / AMFs / SMFs 214, the S-GW (Service Gateway) / UPF (User Plane Function) 212, and the P-GW (Packet Data Network Gateway) / UPF 213. The MME / AMF / SMF 211 is a control node that handles signaling between the UE 201 and the 5GC / EPC 210. Generally, the MME / AMF / SMF 211 provides bearer and connection management.All user IP (Internet Protocol) packets are transmitted through the S-GW / UPF 212, which is itself connected to the P-GW / UPF 213. The P-GW provides UE IP address allocation and other functions. The P-GW / UPF 213 is connected to Internet Services 230. Internet Services 230 includes carrier-specific Internet Protocol services, specifically the Internet, intranet, IMS (IP Multimedia Subsystem), and packet switching services.

[0185] As an embodiment, the first node in the present application includes the UE201.

[0186] As an embodiment, the first node in the present application includes the UE241.

[0187] As an embodiment, the second node in this application includes the gNB203.

[0188] Example 3

[0189] Embodiment 3 illustrates a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a control plane according to an embodiment of the present application, as shown in the attached figure. Figure 3 shown.

[0190] Example 3 shows a schematic diagram of an embodiment of a wireless protocol architecture of a user plane and a control plane according to the present application, as shown in the attached figure. Figure 3 shown. Figure 3 is a schematic diagram illustrating an embodiment of a radio protocol architecture for a user plane 350 and a control plane 300, Figure 3The radio protocol architecture for the control plane 300 between a first communication node device (UE, gNB, or RSU in V2X), or between two UEs, is shown using three layers: Layer 1, Layer 2, and Layer 3. Layer 1 (L1 layer) is the lowest layer and implements various PHY (physical layer) signal processing functions. The L1 layer will be referred to herein as PHY 301. Layer 2 (L2 layer) 305, located above PHY 301, is responsible for the link between the first and second communication node devices, or between two UEs. The L2 layer 305 includes the MAC (Medium Access Control) sublayer 302, the RLC (Radio Link Control) sublayer 303, and the PDCP (Packet Data Convergence Protocol) sublayer 304, which terminate at the second communication node device. The PDCP sublayer 304 provides multiplexing between different radio bearers and logical channels. The PDCP sublayer 304 also provides security by encrypting data packets, and provides support for inter-zone mobility of the first communication node device between the second communication node device. The RLC sublayer 303 provides segmentation and reassembly of upper layer data packets, retransmission of lost data packets, and reordering of data packets to compensate for out-of-order reception due to HARQ. The MAC sublayer 302 provides multiplexing between logical and transport channels. The MAC sublayer 302 is also responsible for allocating various radio resources (e.g., resource blocks) in a cell between the first communication node devices. The MAC sublayer 302 is also responsible for HARQ operations. The RRC (Radio Resource Control) sublayer 306 in Layer 3 (L3 layer) in the control plane 300 is responsible for obtaining radio resources (i.e., radio bearers) and configuring the lower layers using RRC signaling between the second communication node device and the first communication node device. The radio protocol architecture of the user plane 350 includes layer 1 (L1 layer) and layer 2 (L2 layer). The radio protocol architecture for the first communication node device and the second communication node device in the user plane 350 is substantially the same as the corresponding layers and sublayers in the control plane 300 for the physical layer 351, the PDCP sublayer 354 in the L2 layer 355, the RLC sublayer 353 in the L2 layer 355, and the MAC sublayer 352 in the L2 layer 355, but the PDCP sublayer 354 also provides header compression for upper layer data packets to reduce radio transmission overhead.The L2 layer 355 in the user plane 350 also includes an SDAP (Service Data Adaptation Protocol) sublayer 356. The SDAP sublayer 356 is responsible for mapping between QoS flows and data radio bearers (DRBs) to support service diversity. Although not shown in the figure, the first communication node device may have several upper layers above the L2 layer 355, including a network layer (e.g., an IP layer) terminated at the P-GW on the network side and an application layer terminated at the other end of the connection (e.g., a remote UE, a server, etc.).

[0191] As an example, Figure 3 The wireless protocol architecture in is applicable to the first node in this application.

[0192] As an example, Figure 3 The wireless protocol architecture in is applicable to the second node in this application.

[0193] As an embodiment, the first CSI reporting configuration is generated in the RRC sublayer 306.

[0194] As an embodiment, the first CSI is generated by the PHY301.

[0195] As an embodiment, the first CSI is generated by the PHY351.

[0196] As an embodiment, the CSI-RS in the first CSI-RS resource set is generated by the PHY301.

[0197] As an embodiment, the CSI-RS in the first CSI-RS resource set is generated by the PHY351.

[0198] As an embodiment, the higher layer in this application refers to a layer above the physical layer.

[0199] As an embodiment, the higher layer in this application refers to the RRC layer.

[0200] As an embodiment, the higher layer in this application refers to the MAC layer.

[0201] As an embodiment, the higher layer in the present application includes at least one of an RRC layer or a MAC layer.

[0202] Example 4

[0203] Embodiment 4 illustrates a schematic diagram of a first communication device and a second communication device according to an embodiment of the present application, as shown in the attached figure. Figure 4 As shown. Figure 4 is a block diagram of a first communication device 410 and a second communication device 450 communicating with each other in an access network.

[0204] The first communications device 410 includes a controller / processor 475 , a memory 476 , a receive processor 470 , a transmit processor 416 , a multi-antenna receive processor 472 , a multi-antenna transmit processor 471 , a transmitter / receiver 418 , and an antenna 420 .

[0205] The second communication device 450 includes a controller / processor 459 , a memory 460 , a data source 467 , a transmit processor 468 , a receive processor 456 , a multi-antenna transmit processor 457 , a multi-antenna receive processor 458 , a transmitter / receiver 454 and an antenna 452 .

[0206] In transmission from the first communications device 410 to the second communications device 450, at the first communications device 410, upper layer data packets from the core network are provided to the controller / processor 475. The controller / processor 475 implements the functionality of the L2 layer. In the DL, the controller / processor 475 provides header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and allocation of radio resources to the second communications device 450 based on various priority metrics. The controller / processor 475 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the second communications device 450. The transmit processor 416 and the multi-antenna transmit processor 471 implement various signal processing functions for the L1 layer (i.e., the physical layer). The transmit processor 416 implements coding and interleaving to facilitate forward error correction (FEC) at the second communication device 450, as well as constellation mapping based on various modulation schemes (e.g., binary phase-shift keying (BPSK), quadrature phase-shift keying (QPSK), M-phase-shift keying (M-PSK), and M-quadrature amplitude modulation (M-QAM)). The multi-antenna transmit processor 471 performs digital spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming on the coded and modulated symbols to generate one or more parallel streams. The transmit processor 416 then maps each parallel stream to a subcarrier, multiplexes the modulated symbols with reference signals (e.g., pilots) in the time and / or frequency domains, and then uses an inverse fast Fourier transform (IFFT) to generate a physical channel carrying the time-domain multicarrier symbol stream. The multi-antenna transmit processor 471 then performs transmit analog precoding / beamforming operations on the time-domain multicarrier symbol stream. Each transmitter 418 converts the baseband multi-carrier symbol stream provided by the multi-antenna transmit processor 471 into a radio frequency stream, and then provides it to a different antenna 420.

[0207] During transmission from the first communications device 410 to the second communications device 450, each receiver 454 receives a signal at the second communications device 450 via its corresponding antenna 452. Each receiver 454 recovers the information modulated onto the RF carrier and converts the RF stream into a baseband multi-carrier symbol stream, which is provided to the receive processor 456. The receive processor 456 and the multi-antenna receive processor 458 implement various L1 signal processing functions. The multi-antenna receive processor 458 performs receive analog precoding / beamforming operations on the baseband multi-carrier symbol stream from the receiver 454. The receive processor 456 converts the baseband multi-carrier symbol stream, after the receive analog precoding / beamforming operations, from the time domain to the frequency domain using a fast Fourier transform (FFT). In the frequency domain, the physical layer data signal and reference signal are demultiplexed by the receive processor 456, where the reference signal is used for channel estimation. The data signal undergoes multi-antenna detection in the multi-antenna receive processor 458 to recover any parallel streams destined for the second communications device 450. The symbols on each parallel stream are demodulated and recovered in the receive processor 456, and soft decisions are generated. The receive processor 456 then decodes and deinterleaves the soft decisions to recover the upper layer data and control signals transmitted by the first communication device 410 on the physical channel. The upper layer data and control signals are then provided to the controller / processor 459. The controller / processor 459 implements the functions of the L2 layer. The controller / processor 459 may be associated with a memory 460 that stores program code and data. The memory 460 may be referred to as a computer-readable medium. In the DL (Downlink), the controller / processor 459 provides demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper layer data packets from the core network. The upper layer data packets are then provided to all protocol layers above the L2 layer. Various control signals may also be provided to the L3 layer for L3 processing. The controller / processor 459 is also responsible for error detection using an acknowledgement (ACK) and / or negative acknowledgement (NACK) protocol to support HARQ operations.

[0208] During transmission from the second communications device 450 to the first communications device 410, at the second communications device 450, a data source 467 is used to provide upper layer data packets to the controller / processor 459. The data source 467 represents all protocol layers above the L2 layer. Similar to the transmit functionality at the first communications device 410 described in the DL, the controller / processor 459 implements header compression, encryption, packet segmentation and reordering, and multiplexing between logical and transport channels based on the radio resource allocation of the first communications device 410, implementing L2 layer functions for the user plane and control plane. The controller / processor 459 is also responsible for HARQ operations, retransmission of lost packets, and signaling to the first communications device 410. The transmit processor 468 performs modulation mapping and channel coding, while the multi-antenna transmit processor 457 performs digital multi-antenna spatial precoding, including codebook-based and non-codebook-based precoding, and beamforming. The transmit processor 468 then modulates the resulting parallel streams into multi-carrier / single-carrier symbol streams. After analog precoding and beamforming operations in the multi-antenna transmit processor 457, these streams are provided to different antennas 452 via the transmitter 454. Each transmitter 454 first converts the baseband symbol stream provided by the multi-antenna transmit processor 457 into a RF symbol stream before providing it to the antenna 452.

[0209] During transmission from the second communication device 450 to the first communication device 410, the functionality at the first communication device 410 is similar to the reception functionality at the second communication device 450 described for transmission from the first communication device 410 to the second communication device 450. Each receiver 418 receives RF signals via its corresponding antenna 420, converts the received RF signals into baseband signals, and provides the baseband signals to the multi-antenna receive processor 472 and the receive processor 470. The receive processor 470 and the multi-antenna receive processor 472 collectively implement L1 layer functionality. The controller / processor 475 implements L2 layer functionality. The controller / processor 475 may be associated with a memory 476 storing program code and data. The memory 476 may be referred to as a computer-readable medium. The controller / processor 475 provides demultiplexing between transmit and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover upper layer data packets from the second communication device 450. The upper layer data packets from the controller / processor 475 may be provided to the core network. The controller / processor 475 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.

[0210] As an embodiment, the second communication device 450 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor. The second communication device 450 device at least: receives a first CSI reporting configuration, the first CSI reporting configuration indicates a first CSI-RS resource set for channel measurement, the first CSI-RS resource set includes multiple CSI-RS resources; the first CSI reporting configuration is used to configure the reporting of CSI for a port number P, P is a positive integer greater than 1; the P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, or the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set; sends a first CSI; the first CSI is the CSI for a port number P configured by the first CSI reporting configuration; wherein, for the first CSI-RS resource The obtained channel measurement is used to calculate the first CSI, or the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after scaling power; the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource set; in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after scaling power.

[0211] As an embodiment, the second communication device 450 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generating an action when executed by at least one processor, the action including: receiving a first CSI reporting configuration, the first CSI reporting configuration indicating a first CSI-RS resource set for channel measurement, the first CSI-RS resource set including multiple CSI-RS resources; the first CSI reporting configuration is used to configure reporting of CSI with a port number of P, P is a positive integer greater than 1; the P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, or the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set; sending a first CSI; the first CSI is configured by the first CSI reporting configuration For the CSI with a port number of P; wherein the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI, or the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after scaling power; the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource set; in the two cases where P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set, only when P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power.

[0212] As an embodiment, the first communication device 410 includes: at least one processor and at least one memory, the at least one memory including computer program code; the at least one memory and the computer program code are configured to be used together with the at least one processor. The first communication device 410 device at least: sends a first CSI reporting configuration, the first CSI reporting configuration indicates a first CSI-RS resource set for channel measurement, the first CSI-RS resource set includes multiple CSI-RS resources; the first CSI reporting configuration is used to configure the reporting of CSI for a port number P, P is a positive integer greater than 1; the P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, or the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set; receives a first CSI; the first CSI is the CSI for a port number P configured by the first CSI reporting configuration; wherein, for the first CSI-RS resource The obtained channel measurement is used to calculate the first CSI, or the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after scaling power; the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource set; in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after scaling power.

[0213] As an embodiment, the first communication device 410 includes: a memory storing a computer-readable instruction program, the computer-readable instruction program generating an action when executed by at least one processor, the action including: sending a first CSI reporting configuration, the first CSI reporting configuration indicating a first CSI-RS resource set for channel measurement, the first CSI-RS resource set including multiple CSI-RS resources; the first CSI reporting configuration is used to configure reporting of CSI with a port number of P, P is a positive integer greater than 1; the P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, or the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set; receiving a first CSI; the first CSI is configured by the first CSI reporting configuration For the CSI with a port number of P; wherein the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI, or the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after scaling power; the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource set; in the two cases where P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set, only when P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power.

[0214] As an embodiment, the first node in the present application includes the second communication device 450.

[0215] As an embodiment, the second node in the present application includes the first communication device 410.

[0216] As an embodiment, at least one of {the antenna 452, the receiver 454, the receiving processor 456, the multi-antenna receiving processor 458, the controller / processor 459, the memory 460, and the data source 467} is used to receive the first CSI reporting configuration in this application; and at least one of {the antenna 420, the transmitter 418, the transmitting processor 416, the multi-antenna transmitting processor 471, the controller / processor 475, and the memory 476} is used to send the first CSI reporting configuration in this application.

[0217] As an embodiment, at least one of {the antenna 452, the transmitter 454, the transmit processor 468, the multi-antenna transmit processor 457, the controller / processor 459, and the memory 460} is used to send the first CSI in this application; and at least one of {the antenna 420, the receiver 418, the receive processor 470, the multi-antenna receive processor 472, the controller / processor 475, and the memory 476} is used to receive the first CSI in this application.

[0218] As an embodiment, at least one of {the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller / processor 459, the memory 460, and the data source 467} is used to receive the CSI-RS in the first CSI-RS resource set in the present application; and at least one of {the antenna 420, the transmitter 418, the transmit processor 416, the multi-antenna transmit processor 471, the controller / processor 475, and the memory 476} is used to send the CSI-RS in the first CSI-RS resource set in the present application.

[0219] As an embodiment, at least one of {the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller / processor 459, the memory 460, and the data source 467} is used to receive the CSI-RS in the first CSI-RS resource in the present application; and at least one of {the antenna 420, the transmitter 418, the transmit processor 416, the multi-antenna transmit processor 471, the controller / processor 475, and the memory 476} is used to send the CSI-RS in the first CSI-RS resource in the present application.

[0220] As an embodiment, at least one of {the antenna 452, the receiver 454, the receive processor 456, the multi-antenna receive processor 458, the controller / processor 459, the memory 460, and the data source 467} is used to receive the reference signal in the second RS resource set in the present application; and at least one of {the antenna 420, the transmitter 418, the transmit processor 416, the multi-antenna transmit processor 471, the controller / processor 475, and the memory 476} is used to send the reference signal in the second RS resource set in the present application.

[0221] Example 5

[0222] Example 5 illustrates a flow chart of wireless transmission according to an embodiment of the present application, as shown in the attached figure. Figure 5 As shown in the attached Figure 5 In the example, the first node U1 and the second node N2 are two communication nodes transmitted via an air interface.

[0223] for The first node U1 , receiving a first CSI reporting configuration in step S5101; sending a first CSI in step S5102;

[0224] for The second node N2 , in step S5201, a first CSI reporting configuration is sent; in step S5202, a first CSI is received.

[0225] In embodiment 5, the first CSI reporting configuration indicates a first CSI-RS resource set for channel measurement, the first CSI-RS resource set including a plurality of CSI-RS resources; the first CSI reporting configuration is used to configure reporting of CSI with a port number of P, where P is a positive integer greater than 1; the P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, or the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set; a first CSI is sent; the first CSI is the CSI with a port number of P configured by the first CSI reporting configuration; wherein the channel measurement obtained for the first CSI-RS resource is used to measure The first CSI is calculated, or the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after scaling power; the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource set; in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after scaling power only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set.

[0226] Typically, the first node receives CSI-RS in the first CSI-RS resource.

[0227] Typically, the second node sends CSI-RS in the first CSI-RS resource.

[0228] Typically, the first node receives CSI-RS in some or all of the CSI-RS resources in the first CSI-RS resource set.

[0229] Typically, the second node sends CSI-RS in part or all of the CSI-RS resources in the first CSI-RS resource set.

[0230] Typically, the first node receives reference signals in part or all of the RS resources in the second set of RS resources.

[0231] Typically, the second node sends a reference signal in part or all of the RS resources in the second RS resource set.

[0232] Typically, the first receiver in the present application receives CSI-RS in the first CSI-RS resource.

[0233] Typically, the second transmitter in this application sends CSI-RS in the first CSI-RS resource.

[0234] Typically, the first receiver in the present application receives CSI-RS in part or all of the CSI-RS resources in the first CSI-RS resource set.

[0235] Typically, the second transmitter in the present application sends CSI-RS in part or all of the CSI-RS resources in the first CSI-RS resource set.

[0236] Typically, the first receiver in the present application receives reference signals in part or all of the RS resources in the second RS resource set.

[0237] Typically, the second transmitter in the present application sends a reference signal in part or all of the RS resources in the second RS resource set.

[0238] As an embodiment, the P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set.

[0239] As an embodiment, the number of ports of all CSI-RS resources in the first CSI-RS resource set is the same, and P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set.

[0240] As an embodiment, P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set.

[0241] As an embodiment, the first CSI is an aperiodic CSI configured by the first CSI reporting configuration.

[0242] As an embodiment, the first CSI is periodic CSI configured by the first CSI reporting configuration.

[0243] As an embodiment, the first CSI is a semi-persistent CSI configured by the first CSI reporting configuration.

[0244] As an embodiment, the first CSI is transmitted on a physical channel.

[0245] As an embodiment, the first CSI is transmitted on a PUSCH (Physical Uplink Shared Channel).

[0246] As an embodiment, the first CSI is transmitted on a PUCCH (Physical Uplink Control Channel).

[0247] As an embodiment, the first CSI is a semi-persistent (SP) CSI, and the first CSI is activated by a MAC CE.

[0248] As an embodiment, the first CSI is semi-persistent CSI, the first CSI is activated by a MAC CE, and the name of the MAC CE used to activate the first CSI includes SP CSI reporting on PUCCH Activation MAC CE.

[0249] As an embodiment, the first CSI is non-periodic CSI, the first CSI is triggered by a DCI (Downlink Control Information), the DCI includes a CSI request field, the CSI request field of the DCI is used to indicate a trigger state, and the trigger state indicates the first CSI reporting configuration.

[0250] As an embodiment, the first CSI is semi-persistent CSI, and when the first node receives an activation command, the first node sends the first CSI on the PUCCH.

[0251] As a sub-embodiment of the above embodiment, the activation command is a MAC CE.

[0252] As a sub-embodiment of the above embodiment, the activation command includes SP CSI reporting on PUCCHActivation MAC CE.

[0253] As an embodiment, the first CSI is semi-persistent CSI, and when the first node is triggered by a DCI, the first node sends the first CSI on the PUSCH.

[0254] As an embodiment, the first CSI reporting configuration includes a reportConfigType (reporting configuration type) field; the reportConfigType (reporting configuration type) field in the first CSI reporting configuration indicates whether the first CSI is periodic, semi-persistent on PUSCH, semi-persistent on PUCCH, or aperiodic.

[0255] As an embodiment, the first CSI reporting configuration further indicates the reporting amount included in the first CSI.

[0256] As an embodiment, the first CSI reporting configuration includes a reportQuantity field, and the field in the first CSI reporting configuration indicates a report quantity included in the first CSI.

[0257] As an embodiment, the first CSI includes at least CQI among CQI (Channel quality indicator), PMI (Precoding Matrix Indicator), CRI (CSI-RS Resource Indicator), layer indication (LI), and RI (Rank Indicator).

[0258] As an embodiment, the CSI with a port number of P is obtained by channel measurement calculation based on P CSI-RS ports.

[0259] As an embodiment, the CSI with a port number of P is calculated based on a channel parameter matrix obtained by channel measurement of P CSI-RS ports.

[0260] As an embodiment, the CSI for the number of ports P includes at least the PMI and CQI for the number of ports P.

[0261] As an embodiment, the CSI for the number of ports P includes at least the PMI and CQI for the number of ports P, and the PMI for the number of ports P indicates the precoding matrix in the codebook for the number of ports P.

[0262] As an embodiment, the CSI for the number of ports P includes at least the PMI and CQI for the number of ports P, and the PMI for the number of ports P indicates a precoding matrix with a row number equal to the P.

[0263] As an embodiment, the CSI for the number of ports P includes at least RI, PMI and CQI for the number of ports P, and the rank indicated by the RI in the CSI for the number of ports P is a positive integer not greater than P.

[0264] As an embodiment, the CSI for the number of ports P includes a PMI and a CQI for the number of ports P, and the CQI in the first CSI is calculated based on at least the PMI in the first CSI.

[0265] As an embodiment, the CSI for the number of ports P includes the PMI for the number of ports P, and the PMI for the number of ports P indicates the precoding matrix in the codebook for the number of ports P.

[0266] As an embodiment, the CSI for the number of ports P includes a PMI for the number of ports P, and the PMI for the number of ports P indicates a precoding matrix with a row number equal to the P.

[0267] Under the limitations of the above methods or embodiments, how to calculate the CSI for the number of ports P is determined by the manufacturer of the first node, or is implementation-dependent. A typical but non-limiting implementation is described below:

[0268] The CSI for the number of ports P includes at least the PMI and CQI for the number of ports P; the first node measures the P CSI-RS ports to obtain the channel parameter matrix H r×P ; In the precoding matrix W used P×l Under the condition of , the channel parameter matrix after precoding is Wherein the PMI indication W for the number of ports P P×l, l is the rank or number of layers, in one case l is a positive integer not greater than P, in another case the precoding matrix is the identity matrix, in which case P = l; H is calculated using criteria such as SINR (Signal Interference Noise Ratio), EESM (Exponential Effective SINR Mapping), or RBIR (Received Block Mean Mutual Information Ratio). r×P W P×l The equivalent channel capacity is then determined by looking up a table or other means based on the equivalent channel capacity to determine the CQI in the CSI with a port number of P.

[0269] Under the limitations of the above methods or embodiments, how to calculate the CSI for the number of ports P is determined by the manufacturer of the first node, or is implementation-dependent. Another typical but non-limiting implementation is described below:

[0270] The first node measures P CSI-RS ports to obtain a channel parameter matrix H r×P ; When using the precoding matrix W P×l Under the condition of , the channel parameter matrix after precoding is Where l is the rank or number of layers. In one case, l is a positive integer not greater than P. In another case, the precoding matrix is the identity matrix, in which case P = l. H is calculated using criteria such as SINR (Signal Interference Noise Ratio), EESM (Exponential Effective SINR Mapping), or RBIR (Received Block Mean Mutual Information Ratio). r×P W P×l The equivalent channel capacity is then determined by table lookup or other methods based on the equivalent channel capacity, and the CQI in the CSI with the number of ports being P is determined.

[0271] As an embodiment, the first CSI includes at least CQI.

[0272] As an embodiment, the first CSI includes at least RI and CQI.

[0273] As an embodiment, the first CSI includes at least RI, PMI and CQI.

[0274] As an embodiment, the first CSI includes at least RI, LI, PMI and CQI.

[0275] As an embodiment, the first CSI includes at least a first resource indication and a CQI; the first resource indication indicates one or more CSI-RS resources in the first CSI-RS resource set, or the first resource indication includes one or more CRIs.

[0276] As an embodiment, the first CSI includes at least a first resource indication, RI and CQI; the first resource indication indicates one or more CSI-RS resources in the first CSI-RS resource set, or the first resource indication includes one or more CRIs.

[0277] As an embodiment, the first CSI includes at least a first resource indication, RI, PMI and CQI; the first resource indication indicates one or more CSI-RS resources in the first CSI-RS resource set, or the first resource indication includes one or more CRIs.

[0278] As an embodiment, the first CSI includes a first resource indication, RI, LI, PMI and CQI; the first resource indication indicates one or more CSI-RS resources in the first CSI-RS resource set, or the first resource indication includes one or more CRIs.

[0279] As an embodiment, the first CSI includes at least RI and CQI, the rank indicated by the RI in the first CSI is a positive integer not greater than P, and the CQI in the first CSI is calculated conditioned on at least the RI in the first CSI.

[0280] As an embodiment, the first CSI includes at least RI, PMI and CQI, and the CQI in the first CSI is calculated based on at least the RI in the first CSI and the PMI in the first CSI.

[0281] As an embodiment, the first CSI includes at least RI, LI, PMI and CQI, and the CQI in the first CSI is calculated based on at least the RI, LI and PMI in the first CSI.

[0282] As an embodiment, the first CSI includes at least a first resource indication and a CQI; the first resource indication indicates one or more CSI-RS resources in the first CSI-RS resource set, or the first resource indication includes one or more CRIs; the CQI in the first CSI is calculated conditioned on at least the first resource indication in the first CSI.

[0283] As an embodiment, the first CSI includes at least a first resource indication, an RI and a CQI; the first resource indication indicates one or more CSI-RS resources in the first CSI-RS resource set, or the first resource indication includes one or more CRIs; the CQI in the first CSI is calculated conditioned on at least the first resource indication and the RI in the first CSI.

[0284] As an embodiment, the first CSI includes at least a first resource indication, an RI, a PMI and a CQI; the first resource indication indicates one or more CSI-RS resources in the first CSI-RS resource set, or the first resource indication includes one or more CRIs; the CQI in the first CSI is calculated conditioned on at least the first resource indication, the RI and the PMI in the first CSI.

[0285] As an embodiment, the first CSI includes a first resource indication, RI, LI, PMI and CQI; the first resource indication indicates one or more CSI-RS resources in the first CSI-RS resource set, or the first resource indication includes one or more CRIs; the CQI in the first CSI is calculated based on at least the first resource indication, the RI, the LI and the PMI in the first CSI.

[0286] As an embodiment, at least one CSI-RS resource in the first CSI-RS resource set is used for channel measurement of the first CSI.

[0287] As an embodiment, at least one CSI-RS resource in the first CSI-RS resource set is used for channel measurement of the first CSI, and at least one RS resource in the second RS resource set is used for interference measurement of the first CSI.

[0288] As an embodiment, the first timing set includes at least one transmission timing of a CSI reference resource of at least the first CSI-RS resource in the first CSI-RS resource set that is not later than the first CSI, and the channel measurement based on the first timing set is used to calculate the first CSI.

[0289] As an embodiment, channel measurement based on a first timing set is used to calculate the first CSI; when the P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, the first timing set includes at least one transmission timing of the CSI reference resource of the first CSI-RS resource that is not later than the first CSI; when the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set, the first timing set includes at least one transmission timing of the CSI reference resource of each CSI-RS resource in the first CSI-RS resource group that is not later than the first CSI, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the total port number of all CSI-RS resources in the first CSI-RS resource group is equal to the P, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0290] As an embodiment, the first timing set includes at least one transmission timing of a CSI reference resource that is no later than the first CSI of part or all of the CSI-RS resources in the first CSI-RS resource set, and the channel measurement based on the first timing set is used to calculate the first CSI.

[0291] As an embodiment, the first timing set includes at least one transmission timing of a CSI reference resource of at least one CSI-RS resource in the first CSI-RS resource set that is no later than the first CSI, and the channel measurement based on the first timing set is used to calculate the first CSI; the second timing set includes at least one transmission timing of a CSI reference resource of at least one RS resource in the second RS resource set that is no later than the first CSI, and the interference measurement based on the second timing set is used to calculate the first CSI.

[0292] As an embodiment, the first timing set includes at least one transmission timing of CSI reference resources of part or all of the CSI-RS resources in the first CSI-RS resource set that is no later than the first CSI, and the channel measurement based on the first timing set is used to calculate the first CSI; the second timing set includes at least one transmission timing of CSI reference resources of part or all of the RS resources in the second RS resource set that is no later than the first CSI, and the interference measurement based on the second timing set is used to calculate the first CSI.

[0293] As an embodiment, one CSI-RS resource belongs to multiple time slots in the time domain, wherein the portion within one time slot is called a transmission opportunity of the one CSI-RS resource.

[0294] As an embodiment, a transmission opportunity of a CSI-RS resource is a transmission of the CSI-RS resource.

[0295] As an embodiment, one RS resource belongs to multiple time slots in the time domain, wherein the portion within one time slot is called a transmission opportunity of the one RS resource.

[0296] As an embodiment, a transmission opportunity of an RS resource is a transmission of the RS resource.

[0297] As an embodiment, the CSI reference resource of the first CSI in the frequency domain is the frequency domain resource targeted by the first CSI.

[0298] As an embodiment, the CSI reference resource of the first CSI is the subband or broadband targeted by the first CSI in the frequency domain.

[0299] As an embodiment, the CSI reference resource of the first CSI belongs to the same BWP (Bandwidth Part) in the frequency domain as the frequency domain resource targeted by the first CSI.

[0300] As an embodiment, the CSI reference resource of the first CSI is a first downlink time slot in the time domain, the first downlink time slot depends on a second uplink time slot, and the second uplink time slot is an uplink time slot for sending the first CSI.

[0301] As an embodiment, the CSI reference resource of the first CSI is the first downlink time slot in the time domain.

[0302] As an embodiment, the CSI reference resource of the first CSI is a downlink slot.

[0303] As an embodiment, the CSI reference resource of the first CSI depends on the second uplink time slot.

[0304] As an embodiment, the first downlink time slot depends on the second uplink time slot.

[0305] As an embodiment, the second uplink time slot is uplink time slot n'.

[0306] As an embodiment, the second uplink time slot is an uplink time slot for sending the first CSI.

[0307] As an embodiment, the second uplink time slot is the uplink time slot where the PUCCH carrying the first CSI is located.

[0308] As an embodiment, the second uplink time slot is the uplink time slot where the PUSCH carrying the first CSI is located.

[0309] As an embodiment, the description of the CSI reference resource of the first CSI refers to section 5.2.2.5 of 3GPP TS38.214.

[0310] As an embodiment, the first downlink time slot is a downlink time slot where K offset is configured by higher layer signaling, is the K offset subcarrier spacing configuration (subcarrierspacing configuration).

[0311] As an example, n CSI_ref Is a minimum of 4 The minimum value of .

[0312] As an example, n CSI_ref Is a minimum of 5 The minimum value of .

[0313] As an embodiment, n is the sum of the first component and the second component.

[0314] As an embodiment, the first component is an integer.

[0315] As an embodiment, the first component is where μ DL and μ UL are the subcarrier spacing configurations for downlink and uplink, Indicates that x is rounded down.

[0316] As an embodiment, the second component is an integer.

[0317] As an embodiment, the second component is in and μ offset It is configured by the higher-layer parameter ca-SlotOffset. For detailed description, refer to Section 4.5 of 3GPP TS38.211.

[0318] As an embodiment, n is

[0319] As an embodiment, the first downlink time slot is a downlink time slot

[0320] As an embodiment, in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, including: the number of ports of all CSI-RS resources in the first CSI-RS resource set is the same and P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set.

[0321] As an embodiment, in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the power scaling only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, including: when the number of ports of all CSI-RS resources in the first CSI-RS resource set is the same and P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is not scaled by the power before being used to calculate the first CSI.

[0322] As an embodiment, in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, including: when P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is not scaled by the power before being used to calculate the first CSI.

[0323] As an embodiment, in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power, including: when P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, the P CSI-RS ports include all CSI-RS ports of the first CSI-RS resource, a channel parameter matrix is obtained from the measurement of the P CSI-RS ports, and the channel parameter matrix is used to calculate the first CSI.

[0324] As an embodiment, in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power, including: when P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, the P CSI-RS ports include all CSI-RS ports of the first CSI-RS resource, the transmit power of the P CSI-RS ports is the same, a channel parameter matrix is obtained from the measurement of the P CSI-RS ports, and the channel parameter matrix is used to calculate the first CSI.

[0325] As an embodiment, when P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is not power-scaled before being used to calculate the first CSI, including: P CSI-RS ports including all CSI-RS ports of the first CSI-RS resource, a channel parameter matrix is obtained from the measurement of the P CSI-RS ports, and the channel parameter matrix is used to calculate the first CSI.

[0326] As an embodiment, when P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is not subjected to the scaling power before being used to calculate the first CSI, including: P CSI-RS ports including all CSI-RS ports of the first CSI-RS resource, the transmit power of the P CSI-RS ports is the same, a channel parameter matrix is obtained from the measurement of the P CSI-RS ports, and the channel parameter matrix is used to calculate the first CSI.

[0327] As an embodiment, in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the power scaling only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, including: when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, P CSI-RS ports are composed of the CSI-RS ports of all CSI-RS resources in the first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group, and the channel measurement for the P CSI-RS ports is used to calculate the first CSI after power scaling some or all of the ports.

[0328] As an embodiment, in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, including: when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, P CSI-RS ports are composed of the CSI-RS ports of all CSI-RS resources in the first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group, and at least two CSI-RS resources in the first CSI-RS resource group have different CSI-RS The ratio of EPRE to synchronization signal EPRE, the channel measurement for the P CSI-RS ports is used to calculate the first CSI after power scaling for some or all ports.

[0329] As an embodiment, in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, including: when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, P CSI-RS ports are composed of the CSI-RS ports of all CSI-RS resources in the first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, and at least two CSI-RS resources in the first CSI-RS resource group have different CSI-RS The first CSI-RS resource is one of the at least two CSI-RS resources, and a channel measurement for each CSI-RS in the at least two CSI-RS resources is used to calculate the first CSI after power scaling.

[0330] As an embodiment, in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the power scaling, including: obtaining a channel parameter matrix based on the measurement of P CSI-RS ports, and the channel parameter matrix is used to calculate the first CSI; when P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, obtaining the channel parameter matrix by the channel measurement of the P CSI-RS ports; and obtaining the channel parameter matrix by the channel measurement of the P CSI-RS ports after power scaling some or all of the ports.

[0331] As an embodiment, in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the power scaling, including: when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement for the P CSI-RS ports obtains the channel parameter matrix after power scaling some or all of the ports, and the channel parameter matrix is used to calculate the first CSI.

[0332] As an embodiment, in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, including: when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, P CSI-RS ports are composed of the CSI-RS ports of all CSI-RS resources in the first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group, and all CSI-RS resources in the first CSI-RS resource group are respectively configured with CSI-RS The ratio of EPRE to synchronization signal EPRE, the channel measurement for the P CSI-RS ports is used to calculate the first CSI after power scaling for some or all ports.

[0333] As an embodiment, in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the power scaling only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, including: when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource group is used to calculate the first CSI, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the total number of ports of all CSI-RS resources in the first CSI-RS resource group is equal to P, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group; the channel measurement obtained for each CSI-RS resource in some or all of the CSI-RS resources in the first CSI-RS resource group is used to calculate the first CSI after the power scaling.

[0334] As an embodiment, in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the power scaling only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, including: when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource group is used to calculate the first CSI, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the total number of ports of all CSI-RS resources in the first CSI-RS resource group is equal to P, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group; the channel measurement obtained for each CSI-RS resource in the first CSI-RS resource group is used to calculate the first CSI after the power scaling.

[0335] As an embodiment, in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power, including: the channel measurement obtained for the first CSI-RS resource includes a channel parameter matrix H r×p , where r is the number of receiving antennas, and p is the number of CSI-RS ports of the first CSI-RS resource; when P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, the channel parameter matrix is used to calculate the first CSI; when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel parameter matrix is used to calculate the first CSI after the scaling power.

[0336] As an embodiment, in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power, including: the channel measurement obtained for the first CSI-RS resource includes a first channel quality; the first channel quality includes received power, or the first channel quality includes SINR (Signal Interference Noise Ratio); when P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, the first channel quality is used to calculate the CQI in the first CSI; when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the first channel quality is used to calculate the CQI in the first CSI after the scaling power.

[0337] As an embodiment, in the two cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, including: when P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, the channel parameter matrix H is obtained by measuring the first CSI-RS resource r×P , where r is the number of receiving antennas, the channel parameter matrix H r×P is used to calculate the first CSI; when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource group is used to calculate the first CSI, the first CSI-RS resource group includes J CSI-RS resources in the first CSI-RS resource set, J is a positive integer greater than 1, the total number of ports of all CSI-RS resources in the first CSI-RS resource group is equal to P, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group; the subchannel parameter matrix obtained by measuring all CSI-RS resources in the first CSI-RS resource group i=1,……,J;where r is the number of receiving antennas, p i is the number of CSI-RS ports of the i-th CSI-RS resource in the first CSI-RS resource group; the subchannel parameter matrix After scaling the power, the new subchannel parameter matrix is obtained i=1,……,J; J new subchannel parameter matrices i=1,……,J forms the channel parameter matrix in The channel parameter matrix H r×P is used to calculate the first CSI.

[0338] Under the limitations of the above methods or embodiments, the specific algorithm for calculating the first CSI is determined by the manufacturer of the first node, or is implementation-dependent. A typical but non-limiting implementation is described below:

[0339] The first node obtains a channel parameter matrix H based on measurements on P CSI-RS ports. r×P Where r is the number of receiving antennas, the P CSI-RS ports are all antenna ports of the first CSI-RS resource, or the P CSI-RS ports are all CSI-RS ports of all CSI-RS resources in the first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group. When using the precoding matrix W P×l Under the condition of , the channel parameter matrix after precoding is Where l is the rank or the number of layers. In one case, l is a positive integer not greater than P. In another case, the precoding matrix is the identity matrix, in which case P=l. The first CSI includes an RI indicating the rank l, an RI indicating the precoding matrix W P×l If the first CSI includes CQI, H is calculated using, for example, SINR (Signal Interference Noise Ratio), EESM (Exponential Effective SINR Mapping), or RBIR (Received Block Mean Mutual Information Ratio). r×P W P×lThe equivalent channel capacity is then used to determine the CQI included in the first CSI by looking up the equivalent channel capacity. Generally speaking, the calculation of the equivalent channel capacity requires the first node to estimate interference (including noise). The first node can obtain interference by measuring the RS resources in the second RS resource set in this application. Generally speaking, the direct mapping of equivalent channel capacity to CQI values depends on hardware-related factors such as receiver performance or modulation mode.

[0340] Under the limitations of the above method or embodiment, how does the first node obtain the channel parameter matrix H based on the measurement of the P CSI-RS ports? r×P The first node is determined by the manufacturer of the first node, or is implementation-dependent. A typical but non-limiting implementation is described below:

[0341] The P CSI-RS ports are all antenna ports of the first CSI-RS resource, or the P CSI-RS ports are all CSI-RS ports of all CSI-RS resources in the first CSI-RS resource group, the first CSI-RS resource group includes J CSI-RS resources in the first CSI-RS resource set, J is a positive integer greater than 1, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group; when P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, the channel parameter matrix H is obtained for the measurement of the first CSI-RS resource r×P , where r is the number of receiving antennas; when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the total number of ports of all CSI-RS resources in the first CSI-RS resource group is equal to P; the subchannel parameter matrix is obtained by measuring all CSI-RS resources in the first CSI-RS resource group separately i=1,……,J;where r is the number of receiving antennas, p i is the number of CSI-RS ports of the i-th CSI-RS resource in the first CSI-RS resource group; the subchannel parameter matrix After scaling the power, the new subchannel parameter matrix is obtained i=1,……,J; J new subchannel parameter matrices i=1,……,J constitutes the channel parameter matrix in

[0342] Example 6

[0343] Example 6 illustrates a schematic diagram of the relationship between the first CSI and P according to an embodiment of the present application; as shown in the attached figure Figure 6 As shown. Figure 6 , CSI-RS resource #1, ..., CSI-RS resource #J are multiple CSI-RS resources in the first CSI-RS resource group.

[0344] In embodiment 6, the first CSI indicates the first CSI-RS resource, and the P is equal to the port number of the first CSI-RS resource; or, the first CSI indicates a first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the total port number of all CSI-RS resources in the first CSI-RS resource group is equal to the P, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0345] As an embodiment, when the P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, the first CSI indicates the first CSI-RS resource, and the P is equal to the port number of the first CSI-RS resource; when the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set, the first CSI indicates a first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the total port number of all CSI-RS resources in the first CSI-RS resource group is equal to the P, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0346] As an embodiment, channel measurement based on a first timing set is used to calculate the first CSI; when the P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, the first CSI indicates the first CSI-RS resource, and the first timing set includes at least one transmission timing of the CSI reference resource of the first CSI-RS resource that is not later than the first CSI; when the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set, the first CSI indicates a first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the total port number of all CSI-RS resources in the first CSI-RS resource group is equal to the P, the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group, and the first timing set includes at least one transmission timing of the CSI reference resource of each CSI-RS resource in the first CSI-RS resource group that is not later than the first CSI.

[0347] As an embodiment, the first CSI is obtained based on the channel measurement calculation of P CSI-RS ports in the first timing set; when the P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, the P CSI-RS ports are all ports of the first CSI-RS resource, the first CSI indicates the first CSI-RS resource, the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource set, and the first timing set includes at least one transmission timing of the CSI reference resource of the first CSI-RS resource that is not later than the first CSI; when the P is greater than any CSI in the first CSI-RS resource set -RS resource, the first CSI indicates a first CSI-RS resource group, the P CSI-RS ports are composed of all ports of all CSI-RS resources in the first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the total number of ports of all CSI-RS resources in the first CSI-RS resource group is equal to P, the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group, and the first timing set includes at least one transmission timing of the CSI reference resource of each CSI-RS resource in the first CSI-RS resource group that is not later than the first CSI.

[0348] As an embodiment, when the P is equal to the port number of any CSI-RS resource in the first CSI-RS resource set, the first CSI indicates the first CSI-RS resource, and the first timing set includes at least one transmission timing of the CSI reference resource of the first CSI-RS resource no later than the first CSI; when the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set, the first CSI indicates the first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the total port number of all CSI-RS resources in the first CSI-RS resource group is equal to the P, the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group, and the first timing set includes at least one transmission timing of the CSI reference resource of each CSI-RS resource in the first CSI-RS resource group no later than the first CSI.

[0349] As an embodiment, the first CSI includes a first resource indication; when the P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, the first resource indication indicates the first CSI-RS resource; when the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set, the first resource indication indicates a first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the total port number of all CSI-RS resources in the first CSI-RS resource group is equal to the P, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0350] As an embodiment, the first resource indication indicating the first CSI-RS resource includes: the first resource indication is a CRI indicating the first CSI-RS resource.

[0351] As an embodiment, the first resource indication indicating the first CSI-RS resource group includes: the first resource indication indicating an index or identifier of the first CSI-RS resource group.

[0352] As an embodiment, the first resource indication indicates the first CSI-RS resource group, including: the first CSI-RS resource set includes multiple CSI-RS resource groups, the first CSI-RS resource group is one of the multiple CSI-RS resource groups, and the first resource indication indicates an index or identifier of the first CSI-RS resource group.

[0353] In the above method, the first resource indication indicates the index or identifier of the CSI-RS resource group, which is simple in design and reduces indication overhead.

[0354] As an embodiment, the first resource indication indicating the first CSI-RS resource group includes: the first resource indication includes multiple CRIs, and the multiple CRIs respectively indicate multiple CSI-RS resources in the first CSI-RS resource group.

[0355] In the above method, the first resource indication includes multiple CRIs, and adopts the method of indicating CSI-RS resources through CRI in the existing standard, which has good compatibility with the standard.

[0356] Within the limitations of the above method or embodiment, how to select the first CSI-RS resource or the first CSI-RS resource group from the first CSI-RS resource set is determined by the manufacturer of the first node, or is implementation-dependent. A typical but non-limiting implementation is described below: the first node calculates a corresponding SINR for each CSI-RS resource in the first CSI-RS resource set, and selects a CSI-RS resource based on a maximum SINR or maximum capacity criterion, where the first CSI-RS resource is a CSI-RS resource corresponding to the maximum SINR or maximum capacity.

[0357] Under the limitations of the above method or embodiment, how to select the first CSI-RS resource or the first CSI-RS resource group from the first CSI-RS resource set is determined by the manufacturer of the first node, or is implementation-related. A typical but non-limiting implementation method is described below: the first node calculates the corresponding SINR for each CSI-RS resource group in the first CSI-RS resource set, and a CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set; selects a CSI-RS resource group according to the maximum SINR or maximum capacity criterion, and the first CSI-RS resource group is a CSI-RS resource group corresponding to the maximum SINR or maximum capacity.

[0358] Example 7

[0359] Embodiment 7 illustrates a schematic diagram of using the channel measurement obtained for the first CSI-RS resource after the power scaling according to an embodiment of the present application to calculate the first CSI; Figure 7 shown.

[0360] In embodiment 7, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power, including: the channel measurement obtained for the first CSI-RS resource minus a first coefficient is used to calculate the first CSI, and the unit of the first coefficient is dB; the first coefficient is configurable or predefined, or the first coefficient is equal to the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE.

[0361] Typically, the channel measurement obtained for the first CSI-RS resource is in units of dB or dBm.

[0362] Typically, the channel measurement obtained for the first CSI-RS resource is in dB or dBm, and the first coefficient is in dB.

[0363] Typically, the IE used to configure the first CSI-RS resource indicates a ratio of CSI-RS EPRE to synchronization signal EPRE of the first CSI-RS resource.

[0364] Typically, the IE NZP-CSI-RS-Resource used to configure the first CSI-RS resource indicates a ratio of CSI-RS EPRE to synchronization signal EPRE of the first CSI-RS resource.

[0365] As an embodiment, the IE used to configure a CSI-RS resource is the IE NZP-CSI-RS-Resource.

[0366] As an embodiment, the unit of the ratio of a CSI-RS EPRE to a synchronization signal EPRE is dB (decibel).

[0367] As an embodiment, a ratio of a CSI-RS EPRE to a synchronization signal EPRE is a real number.

[0368] As an embodiment, a ratio of a CSI-RS EPRE to a synchronization signal EPRE is an integer, and a unit of the ratio of a CSI-RS EPRE to a synchronization signal EPRE is dB.

[0369] As an embodiment, a ratio of a CSI-RS EPRE to a synchronization signal EPRE has a value range of [-8, 15] dB and a step size of 1 dB.

[0370] As an embodiment, the ratio of CSI-RS EPRE to synchronization signal EPRE of one CSI-RS resource is the ratio of assumed CSI-RS EPRE to synchronization signal EPRE of the one CSI-RS resource.

[0371] As an embodiment, the ratio of CSI-RS EPRE to synchronization signal EPRE of a CSI-RS resource is the ratio of assumed CSI-RS EPRE to SS / PBCH block (Synchronization signal / Physical broadcast channel block) EPRE of the CSI-RS resource.

[0372] As an embodiment, the synchronization signal EPRE is SS (Synchronization signal) EPRE.

[0373] As an embodiment, the synchronization signal EPRE is SS / PBCH block (Synchronization signal / Physical broadcast channel block) EPRE.

[0374] As an embodiment, the ratio of the CSI-RS EPRE to the synchronization signal EPRE is powerControlOffsetSS.

[0375] As an embodiment, the specific definition of the powerControlOffsetSS refers to Section 5.2.2.3 of 3GPP TS 38.214.

[0376] As an embodiment, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power, including: the channel measurement obtained for the first CSI-RS resource minus a first coefficient is used to calculate the first CSI, and the unit of the first coefficient is dB; the IE used to configure the first CSI-RS resource indicates the first coefficient.

[0377] As an embodiment, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power, including: the channel measurement obtained for the first CSI-RS resource minus a first coefficient is used to calculate the first CSI, and the unit of the first coefficient is dB; an IE indicating the first coefficient is different from any IE used to configure a CSI-RS resource.

[0378] As an embodiment, the channel measurement obtained for the first CSI-RS resource minus the first coefficient is used to calculate the first CSI, including: the channel measurement obtained for the first CSI-RS resource includes a channel parameter matrix H r×p , where r is the number of receive antennas, p is the number of CSI-RS ports of the first CSI-RS resource; the channel measurement obtained for the first CSI-RS resource is in dBm, and the unit of the first coefficient is dB; the channel parameter matrix is used to calculate the first CSI after subtracting the first coefficient.

[0379] Under the limitations of the above methods or embodiments, the specific algorithm for calculating the first CSI is determined by the manufacturer of the first node, or is implementation-dependent. A typical but non-limiting implementation is described below:

[0380] The P CSI-RS ports are all CSI-RS ports of all CSI-RS resources in the first CSI-RS resource group, the first CSI-RS resource group includes J CSI-RS resources in the first CSI-RS resource set, J is a positive integer greater than 1, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group; the total number of ports of all CSI-RS resources in the first CSI-RS resource group is equal to P; the subchannel parameter matrix is obtained by measuring all CSI-RS resources in the first CSI-RS resource group respectively i=1,……,J;where r is the number of receiving antennas, p i is the number of CSI-RS ports of the i-th CSI-RS resource in the first CSI-RS resource group; the subchannel parameter matrix After subtracting one coefficient, the new subchannel parameter matrix is obtained i=1,...,J; for the subchannel parameter matrix obtained by measuring the first CSI-RS resource, this coefficient is the first coefficient; J new subchannel parameter matrices i=1,……,J forms the channel parameter matrix in When using the precoding matrix WP×l Under the condition of , the channel parameter matrix after precoding is Where l is the rank or the number of layers. In one case, l is a positive integer not greater than P. In another case, the precoding matrix is the identity matrix, in which case P=l. The first CSI includes an RI indicating the rank l, an RI indicating the precoding matrix W P×l If the first CSI includes CQI, H is calculated using, for example, SINR (Signal Interference Noise Ratio), EESM (Exponential Effective SINR Mapping), or RBIR (Received Block Mean Mutual Information Ratio). r×P W P×l The equivalent channel capacity is then used to determine the CQI included in the first CSI by looking up the equivalent channel capacity. Generally speaking, the calculation of the equivalent channel capacity requires the first node to estimate interference (including noise). The first node can obtain interference by measuring the RS resources in the second RS resource set in this application. Generally speaking, the direct mapping of equivalent channel capacity to CQI values depends on hardware-related factors such as receiver performance or modulation mode.

[0381] As an embodiment, the channel measurement obtained for the first CSI-RS resource minus the first coefficient is used to calculate the first CSI, including: the channel measurement obtained for the first CSI-RS resource includes a first channel quality; the first channel quality includes received power, or the first channel quality includes SINR (Signal Interference Noise Ratio); the first channel quality is used to calculate the CQI in the first CSI after subtracting the first coefficient.

[0382] Under the limitations of the above methods or embodiments, the specific algorithm for calculating the first CSI is determined by the manufacturer of the first node, or is implementation-dependent. Another typical but non-limiting implementation is described below:

[0383] The P CSI-RS ports are all CSI-RS ports of all CSI-RS resources in the first CSI-RS resource group, the first CSI-RS resource group includes J CSI-RS resources in the first CSI-RS resource set, J is a positive integer greater than 1, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group; the total number of ports of all CSI-RS resources in the first CSI-RS resource group is equal to P; the subchannel parameter matrix is obtained by measuring all CSI-RS resources in the first CSI-RS resource group respectively i=1,……,J;where r is the number of receiving antennas, p i is the number of CSI-RS ports of the i-th CSI-RS resource in the first CSI-RS resource group; J subchannel parameter matrices i=1,……,J forms the channel parameter matrix in When using the precoding matrix Under the condition of , the channel parameter matrix after precoding is Where l is the rank or the number of layers. In one case, l is a positive integer not greater than P. In another case, the precoding matrix is the identity matrix, in which case P=l. The first CSI includes an RI indicating the rank l, an RI indicating the precoding matrix W P×l If the first CSI includes CQI, the precoded channel parameter matrix The corresponding received power or SINR is used to calculate the CQI in the first CSI after subtracting a coefficient; for the first CSI-RS resource, this coefficient is the first coefficient. The equivalent channel capacity is calculated using criteria such as SINR (Signal Interference Noise Ratio), EESM (Exponential Effective SINR Mapping), or RBIR (Received Blockmean mutual Information Ratio), and then the CQI included in the first CSI is determined by the equivalent channel capacity through table lookup or the like. Generally speaking, the calculation of the equivalent channel capacity requires the first node to estimate the interference (including noise), and the first node can obtain the interference by measuring the RS resources in the second RS resource set in the present application. Generally speaking, the direct mapping of the equivalent channel capacity to the CQI value depends on the receiver performance, or hardware-related factors such as the modulation method.

[0384] As an embodiment, when P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, the ratio of the CSI-RS EPRE to the synchronization signal EPRE configured for each CSI-RS resource in the first CSI-RS resource set is determined by the sender of the first CSI reporting configuration.

[0385] As an embodiment, when P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, whether the ratios of the CSI-RS EPRE to the synchronization signal EPRE configured for different CSI-RS resources in the first CSI-RS resource set are the same is determined by the sender of the first CSI reporting configuration.

[0386] As an embodiment, when P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, the ratios of the CSI-RS EPRE to the synchronization signal EPRE configured for any two CSI-RS resources in the first CSI-RS resource set are not necessarily the same.

[0387] As an embodiment, when P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, the ratio of the CSI-RS EPRE to the synchronization signal EPRE configured for any two CSI-RS resources in the first CSI-RS resource set may be the same or different.

[0388] As an embodiment, the IE used to configure one CSI-RS resource indicates a ratio of at least one CSI-RS EPRE configured for the one CSI-RS resource to a synchronization signal EPRE.

[0389] As an embodiment, the first CSI-RS resource group includes part or all of the CSI-RS resources of the first CSI-RS resource set, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0390] As an embodiment, the first CSI-RS resource group is the first CSI-RS resource set.

[0391] As an embodiment, the first CSI does not include CRI, the first CSI-RS resource group is the first CSI-RS resource set, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0392] As an embodiment, the first CSI does not include a reported amount indicating a CSI-RS resource, and the first CSI-RS resource group is the first CSI-RS resource set.

[0393] As an embodiment, the first CSI-RS resource group includes part of the CSI-RS resources in the first CSI-RS resource set, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0394] As an embodiment, the first CSI-RS resource set includes multiple CSI-RS resource groups, and the first CSI-RS resource group is one of the multiple CSI-RS resource groups.

[0395] As an embodiment, the first CSI includes a first resource indication, which indicates a first CSI-RS resource group; the first CSI-RS resource set includes multiple CSI-RS resource groups, and the first CSI-RS resource group is one of the multiple CSI-RS resource groups.

[0396] As an embodiment, when the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set, the first CSI indicates a first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the P is equal to the total port number of all CSI-RS resources in the first CSI-RS resource group, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0397] Example 8

[0398] Embodiment 8 illustrates a schematic diagram of using the channel measurement obtained for the first CSI-RS resource after the power scaling according to another embodiment of the present application to calculate the first CSI; as shown in the attached figure Figure 8 shown.

[0399] In embodiment 8, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power, including: the channel measurement obtained for the first CSI-RS resource is added with a second coefficient and then used to calculate the first CSI, the unit of the second coefficient is dB; the second coefficient is configurable or predefined, or the second coefficient is equal to a reference value minus the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE.

[0400] As an embodiment, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power, including: the channel measurement obtained for the first CSI-RS resource is added with a second coefficient and then used to calculate the first CSI, the unit of the second coefficient is dB, and the IE used to configure the first CSI-RS resource indicates the second coefficient.

[0401] As an embodiment, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power, including: the channel measurement obtained for the first CSI-RS resource is added with a second coefficient and then used to calculate the first CSI, the unit of the second coefficient is dB, and an IE indicating the second coefficient is different from any IE used to configure a CSI-RS resource.

[0402] As an embodiment, the IE indicating the second coefficient includes the first CSI reporting configuration.

[0403] As an embodiment, the IE indicating the second coefficient includes a first CSI resource configuration, and the first CSI resource configuration indicates the first CSI-RS resource set.

[0404] As an embodiment, the one IE indicating the second coefficient includes an IE used to configure the first CSI-RS resource set.

[0405] As an embodiment, the IE indicating the second coefficient includes the first CSI reporting configuration, and the first CSI reporting configuration is the IE CSI-ReportConfig.

[0406] As an embodiment, the IE indicating the second coefficient includes a first CSI resource configuration, the first CSI resource configuration is an IE CSI-ResourceConfig, and the first CSI resource configuration indicates the first CSI-RS resource set.

[0407] As an embodiment, the IE indicating the second coefficient includes the IE NZP-CSI-RS-ResourceSet used to configure the first CSI-RS resource set.

[0408] Typically, the reference value is configurable or predefined.

[0409] Typically, the unit of the reference value is dB.

[0410] As an embodiment, the unit of the reference value is dB, and the reference value is a real number.

[0411] As an embodiment, the unit of the reference value is dB, and the reference value is an integer.

[0412] Typically, the reference value is a powerControlOffsetSS.

[0413] Typically, the reference value is a ratio of CSI-RS EPRE to synchronization signal EPRE.

[0414] As an embodiment, the IE used to configure the first CSI-RS resource indicates the reference value and the ratio of CSI-RS EPRE to synchronization signal EPRE of the first CSI-RS resource.

[0415] As an embodiment, the IE used to configure the first CSI-RS resource indicates the reference value and the ratio of CSI-RS EPRE to synchronization signal EPRE of the first CSI-RS resource, and the reference value is a ratio of CSI-RS EPRE to synchronization signal EPRE.

[0416] In the above method, one CSI-RS resource is configured with two CSI-RS EPRE to synchronization signal EPRE ratios, which has high flexibility and good standard compatibility. For example, the CSI-RS EPRE to synchronization signal EPRE ratio is configured per CSI-RS resource.

[0417] As an embodiment, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the power scaling, including: the channel measurement obtained for the first CSI-RS resource is added with a second coefficient and then used to calculate the first CSI, the unit of the second coefficient is dB; the second coefficient is equal to the reference value minus the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE; the IE used to configure the first CSI-RS resource indicates the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE, and the IE other than the IE used to configure the first CSI-RS resource indicates the reference value.

[0418] In the above method, the ratio of the CSI-RS EPRE to the synchronization signal EPRE of the first CSI-RS resource is specifically configured for the first CSI-RS resource, and the reference value is configured for multiple CSI-RS resources including the first CSI-RS resource, which simplifies the design and saves signaling overhead.

[0419] Typically, the IE used to configure the first CSI-RS resource is IENZP-CSI-RS-Resource.

[0420] As an embodiment, the IE indicating the reference value includes the first CSI reporting configuration.

[0421] As an embodiment, the IE indicating the reference value includes a first CSI resource configuration, and the first CSI resource configuration indicates the first CSI-RS resource set.

[0422] As an embodiment, the IE indicating the reference value includes an IE used to configure the first CSI-RS resource set.

[0423] As an embodiment, the IE indicating the reference value includes the first CSI reporting configuration, and the first CSI reporting configuration is IE CSI-ReportConfig.

[0424] As an embodiment, the IE indicating the reference value includes a first CSI resource configuration, the first CSI resource configuration is an IE CSI-ResourceConfig, and the first CSI resource configuration indicates the first CSI-RS resource set.

[0425] As an embodiment, the IE indicating the reference value includes the IE NZP-CSI-RS-ResourceSet used to configure the first CSI-RS resource set.

[0426] As an embodiment, the channel measurement obtained for the first CSI-RS resource plus the second coefficient is used to calculate the first CSI, including: the channel measurement obtained for the first CSI-RS resource includes a channel parameter matrix H r×p , where r is the number of receive antennas, p is the number of CSI-RS ports of the first CSI-RS resource; the channel measurement obtained for the first CSI-RS resource is in dBm, and the unit of the second coefficient is dB; the channel parameter matrix is used to calculate the first CSI after adding the second coefficient.

[0427] Under the limitations of the above methods or embodiments, the specific algorithm for calculating the first CSI is determined by the manufacturer of the first node, or is implementation-dependent. A typical but non-limiting implementation is described below:

[0428] The P CSI-RS ports are all CSI-RS ports of all CSI-RS resources in the first CSI-RS resource group, the first CSI-RS resource group includes J CSI-RS resources in the first CSI-RS resource set, J is a positive integer greater than 1, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group; the total number of ports of all CSI-RS resources in the first CSI-RS resource group is equal to P; the subchannel parameter matrix is obtained by measuring all CSI-RS resources in the first CSI-RS resource group respectively i=1,……,J;where r is the number of receiving antennas, p i is the number of CSI-RS ports of the i-th CSI-RS resource in the first CSI-RS resource group; the subchannel parameter matrix After adding a coefficient, the new subchannel parameter matrix is obtained i=1, ..., J; for the subchannel parameter matrix obtained by measuring the first CSI-RS resource, this coefficient is the second coefficient; J new subchannel parameter matrices i=1,……,J forms the channel parameter matrix in When using the precoding matrix W P×l Under the condition of , the channel parameter matrix after precoding is Where l is the rank or the number of layers. In one case, l is a positive integer not greater than P. In another case, the precoding matrix is the identity matrix, in which case P=l. The first CSI includes an RI indicating the rank l, an RI indicating the precoding matrix W P×l If the first CSI includes CQI, H is calculated using, for example, SINR (Signal Interference Noise Ratio), EESM (Exponential Effective SINR Mapping), or RBIR (Received Block Mean Mutual Information Ratio). r×P W P×lThe equivalent channel capacity is then used to determine the CQI included in the first CSI by looking up the equivalent channel capacity. Generally speaking, the calculation of the equivalent channel capacity requires the first node to estimate interference (including noise). The first node can obtain interference by measuring the RS resources in the second RS resource set in this application. Generally speaking, the direct mapping of equivalent channel capacity to CQI values depends on hardware-related factors such as receiver performance or modulation mode.

[0429] As an embodiment, the channel measurement obtained for the first CSI-RS resource is added with a second coefficient and used to calculate the first CSI, including: the channel measurement obtained for the first CSI-RS resource includes a first channel quality; the first channel quality includes received power, or the first channel quality includes SINR (Signal Interference Noise Ratio); the first channel quality is used to calculate the CQI in the first CSI after adding the second coefficient.

[0430] Under the limitations of the above methods or embodiments, the specific algorithm for calculating the first CSI is determined by the manufacturer of the first node, or is implementation-dependent. Another typical but non-limiting implementation is described below:

[0431] The P CSI-RS ports are all CSI-RS ports of all CSI-RS resources in the first CSI-RS resource group, the first CSI-RS resource group includes J CSI-RS resources in the first CSI-RS resource set, J is a positive integer greater than 1, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group; the total number of ports of all CSI-RS resources in the first CSI-RS resource group is equal to P; the subchannel parameter matrix is obtained by measuring all CSI-RS resources in the first CSI-RS resource group respectively i=1,……,J;where r is the number of receiving antennas, p i is the number of CSI-RS ports of the i-th CSI-RS resource in the first CSI-RS resource group; J subchannel parameter matrices i=1,……,J forms the channel parameter matrix in When using the precoding matrix Under the condition of , the channel parameter matrix after precoding is Where l is the rank or the number of layers. In one case, l is a positive integer not greater than P. In another case, the precoding matrix is the identity matrix, in which case P=l. The first CSI includes an RI indicating the rank l, an RI indicating the precoding matrix W P×l If the first CSI includes CQI, the precoded channel parameter matrix The corresponding received power or SINR is used to calculate the CQI in the first CSI after adding a coefficient; for the first CSI-RS resource, this coefficient is the second coefficient. The equivalent channel capacity is calculated using criteria such as SINR (Signal Interference Noise Ratio), EESM (Exponential Effective SINR Mapping), or RBIR (Received Blockmean mutual Information Ratio), and then the CQI included in the first CSI is determined by the equivalent channel capacity through table lookup or other methods. Generally speaking, the calculation of the equivalent channel capacity requires the first node to estimate the interference (including noise), and the first node can obtain the interference by measuring the RS resources in the second RS resource set in this application. Generally speaking, the direct mapping of the equivalent channel capacity to the CQI value depends on the receiver performance, or hardware-related factors such as the modulation method.

[0432] Example 9

[0433] Embodiment 9 illustrates a schematic diagram of a first CSI-RS resource group according to an embodiment of the present application; Figure 9 shown.

[0434] In embodiment 9, when the P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource group is used to calculate the first CSI, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the total number of ports of all CSI-RS resources in the first CSI-RS resource group is equal to the P, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0435] As an embodiment, when the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource group is used to calculate the first CSI, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the total port number of all CSI-RS resources in the first CSI-RS resource group is equal to the P, and the first CSI-RS resource is any CSI-RS resource in the first CSI-RS resource group.

[0436] As an embodiment, the subchannel parameter matrix obtained by measuring all CSI-RS resources in the first CSI-RS resource group is i=1,……,J;where r is the number of receiving antennas, p i is the number of CSI-RS ports of the i-th CSI-RS resource in the first CSI-RS resource group; the subchannel parameter matrix After scaling the power, the new subchannel parameter matrix is obtained i=1,……,J; J new subchannel parameter matrices i=1,……,J forms the channel parameter matrix in The channel parameter matrix H r×P is used to calculate the first CSI.

[0437] Under the limitations of the above methods or embodiments, the specific algorithm used to calculate the first CSI by the channel measurement obtained for the first CSI-RS resource group is determined by the manufacturer of the first node, or is implementation-dependent. A typical but non-limiting implementation is described below:

[0438] The first node obtains a channel parameter matrix H based on measurements on P CSI-RS ports. r×P ; Where r is the number of receiving antennas, and the P CSI-RS ports are all CSI-RS ports of all CSI-RS resources in the first CSI-RS resource group. The first CSI-RS resource group includes J CSI-RS resources in the first CSI-RS resource set, where J is a positive integer greater than 1; the subchannel parameter matrix is obtained by measuring all CSI-RS resources in the first CSI-RS resource group. i=1,……,J;where r is the number of receiving antennas, p i is the number of CSI-RS ports of the i-th CSI-RS resource in the first CSI-RS resource group; the subchannel parameter matrix After scaling the power, the new subchannel parameter matrix is obtained i=1,……,J; J new subchannel parameter matrices i=1,……,J constitutes the channel parameter matrix in When using the precoding matrix W P×l Under the condition of , the channel parameter matrix after precoding is Where l is the rank or the number of layers. In one case, l is a positive integer not greater than P. In another case, the precoding matrix is the identity matrix, in which case P=l. The first CSI includes an RI indicating the rank l, an RI indicating the precoding matrix W P×l If the first CSI includes CQI, H is calculated using, for example, SINR (Signal Interference Noise Ratio), EESM (Exponential Effective SINR Mapping), or RBIR (Received Blockmean mutual Information Ratio). r×P W P×l The equivalent channel capacity is then used to determine the CQI included in the first CSI by looking up the equivalent channel capacity. Generally speaking, the calculation of the equivalent channel capacity requires the first node to estimate interference (including noise). The first node can obtain interference by measuring the RS resources in the second RS resource set in this application. Generally speaking, the direct mapping of equivalent channel capacity to CQI values depends on hardware-related factors such as receiver performance or modulation mode.

[0439] Under the limitations of the above methods or embodiments, the specific algorithm used to calculate the first CSI by the channel measurement obtained for the first CSI-RS resource group is determined by the manufacturer of the first node, or is implementation-dependent. Another typical but non-limiting implementation is described below:

[0440] The P CSI-RS ports are all CSI-RS ports of all CSI-RS resources in the first CSI-RS resource group, the first CSI-RS resource group includes J CSI-RS resources in the first CSI-RS resource set, and J is a positive integer greater than 1; and a subchannel parameter matrix is obtained by measuring all CSI-RS resources in the first CSI-RS resource group. i=1,……,J;where r is the number of receiving antennas, p iis the number of CSI-RS ports of the i-th CSI-RS resource in the first CSI-RS resource group; J subchannel parameter matrices i=1,……,J forms the channel parameter matrix in When using the precoding matrix Under the condition of , the channel parameter matrix after precoding is Where l is the rank or the number of layers. In one case, l is a positive integer not greater than P. In another case, the precoding matrix is the identity matrix, in which case P=l. The first CSI includes an RI indicating the rank l, an RI indicating the precoding matrix W P×l If the first CSI includes CQI, the precoded channel parameter matrix The corresponding received power or SINR is used to calculate the CQI in the first CSI after power scaling. The equivalent channel capacity is calculated using criteria such as SINR (Signal Interference Noise Ratio), EESM (Exponential Effective SINR Mapping), or RBIR (Received Block mean mutual Information Ratio), and then the CQI included in the first CSI is determined by the equivalent channel capacity through table lookup or the like. Generally speaking, the calculation of the equivalent channel capacity requires the first node to estimate the interference (including noise), and the first node can obtain the interference by measuring the RS resources in the second RS resource set in the present application. Generally speaking, the direct mapping of the equivalent channel capacity to the CQI value depends on the receiver performance, or hardware-related factors such as the modulation method.

[0441] Example 10

[0442] Example 10 illustrates a schematic diagram of reference values according to an embodiment of the present application; Figure 10 shown.

[0443] In embodiment 10, the IE used to configure the first CSI-RS resource indicates the reference value and the ratio of CSI-RS EPRE to synchronization signal EPRE of the first CSI-RS resource.

[0444] As an embodiment, the IE used to configure the first CSI-RS resource indicates the reference value and the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE, including: the IE used to configure the first CSI-RS resource includes two fields, and the two fields respectively indicate the reference value and the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE.

[0445] As an embodiment, the IE used to configure the first CSI-RS resource indicates the reference value and the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE, including: the IE used to configure the first CSI-RS resource includes two fields, one of the two fields indicates the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE, and the other of the two fields indicates a first offset value, and the first offset value is a real number or an integer; the reference value is equal to the sum of the first offset value and the ratio of the CSI-RSEPRE of the first CSI-RS resource to the synchronization signal EPRE, or the reference value is equal to the ratio of the CSI-RSEPRE of the first CSI-RS resource to the synchronization signal EPRE minus the first offset value; the ratio of the CSI-RSEPRE of the first CSI-RS resource to the synchronization signal EPRE, the units of the reference value and the first offset value are both dB.

[0446] As an embodiment, the reference value and the ratio of CSI-RS EPRE to synchronization signal EPRE of the first CSI-RS resource are both configured for the first CSI-RS resource.

[0447] As an embodiment, the reference value and the ratio of CSI-RS EPRE to synchronization signal EPRE of the first CSI-RS resource are indicated by the same IE.

[0448] As an embodiment, the IE used to configure the first CSI-RS resource indicates the reference value and the ratio of CSI-RS EPRE to synchronization signal EPRE of the first CSI-RS resource, and the reference value is a ratio of CSI-RS EPRE to synchronization signal EPRE.

[0449] In the above method, one CSI-RS resource is configured with two CSI-RS EPRE to synchronization signal EPRE ratios, which has high flexibility and good compatibility with standards. For example, the CSI-RS EPRE to synchronization signal EPRE ratio is configured per CSI-RS resource.

[0450] Example 11

[0451] Example 11 illustrates a schematic diagram of reference values according to another embodiment of the present application; Figure 11 As shown. Figure 11 , IE#1 and IE#2 are two IEs.

[0452] In embodiment 11, the second coefficient is equal to the reference value minus the ratio of CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE; the IE used to configure the first CSI-RS resource indicates the ratio of CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE, and the reference value is indicated by an IE, and the IE indicating the reference value is different from any IE used to configure a CSI-RS resource.

[0453] As an embodiment, the IE used to configure the first CSI-RS resource is the IE NZP-CSI-RS-Resource used to configure the first CSI-RS resource.

[0454] As an embodiment, the IE indicating the reference value includes the first CSI reporting configuration.

[0455] As an embodiment, the IE indicating the reference value includes a first CSI resource configuration, and the first CSI resource configuration indicates the first CSI-RS resource set.

[0456] As an embodiment, the IE indicating the reference value includes an IE used to configure the first CSI-RS resource set.

[0457] As an embodiment, the IE indicating the reference value includes the first CSI reporting configuration, and the first CSI reporting configuration is IE CSI-ReportConfig.

[0458] As an embodiment, the IE indicating the reference value includes a first CSI resource configuration, the first CSI resource configuration is an IE CSI-ResourceConfig, and the first CSI resource configuration indicates the first CSI-RS resource set.

[0459] As an embodiment, the IE indicating the reference value includes the IE NZP-CSI-RS-ResourceSet used to configure the first CSI-RS resource set.

[0460] Example 12

[0461] Example 12 illustrates a schematic diagram of reference values according to another embodiment of the present application; Figure 12 As shown. Figure 12 , CSI-RS resource #1, ..., CSI-RS resource #J are multiple CSI-RS resources in the first CSI-RS resource group.

[0462] In embodiment 12, each CSI-RS resource in the first CSI-RS resource set is configured with a ratio of CSI-RS EPRE to synchronization signal EPRE; the first value set includes the ratio of CSI-RS EPRE to synchronization signal EPRE configured for each CSI-RS resource in the first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group; the reference value is a value in the first value set, or the reference value depends on the first value set.

[0463] As an embodiment, the first CSI-RS resource group includes part or all of the CSI-RS resources of the first CSI-RS resource set, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0464] As an embodiment, the first CSI-RS resource group is the first CSI-RS resource set.

[0465] As an embodiment, the first CSI-RS resource group is the first CSI-RS resource set, and the first CSI does not include CRI.

[0466] As an embodiment, the first CSI-RS resource group is the first CSI-RS resource set, and the first CSI does not include a reporting amount indicating the CSI-RS resource.

[0467] As an embodiment, the first CSI-RS resource group includes part of the CSI-RS resources in the first CSI-RS resource set, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0468] As an embodiment, the first CSI includes a first resource indication, which indicates a first CSI-RS resource group; the first CSI-RS resource set includes multiple CSI-RS resource groups, the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group, and the first CSI-RS resource group is one of the multiple CSI-RS resource groups.

[0469] As an embodiment, the reference value is the minimum value in the first value set.

[0470] As an embodiment, the reference value being dependent on the first value set includes: the reference value being the minimum value in the first value set.

[0471] In the above method, the most reliable transmission can be achieved by using the minimum powerControlOffsetSS in the first value set.

[0472] As an embodiment, the reference value is the maximum value in the first value set.

[0473] As an embodiment, the reference value being dependent on the first value set includes: the reference value being the maximum value in the first value set.

[0474] In the above method, the maximum powerControlOffsetSS in the first value set is used to obtain the transmission with the largest capacity.

[0475] As an embodiment, the reference value is an average value in the first value set.

[0476] As an embodiment, the reference value being dependent on the first value set includes: the reference value being an average value in the first value set.

[0477] In the above method, the average value of all powerControlOffsetSS in the first value set is used, taking reliability and capacity into consideration.

[0478] As an embodiment, the reference value is a ratio of a CSI-RS EPRE configured for a first CSI-RS resource to a synchronization signal EPRE in the first value set, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0479] As an embodiment, the reference value depends on the first value set, including: the reference value is the ratio of the CSI-RS EPRE configured to the first CSI-RS resource in the first value set to the synchronization signal EPRE, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0480] As an embodiment, the reference value is a ratio of a CSI-RS EPRE configured for a second CSI-RS resource to a synchronization signal EPRE in the first value set, and the second CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0481] As an embodiment, the reference value depends on the first value set, including: the reference value is the ratio of the CSI-RS EPRE configured for the second CSI-RS resource in the first value set to the synchronization signal EPRE, and the second CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0482] In the above method, the powerControlOffsetSS is configured for one CSI-RS resource in the first CSI-RS resource group, which is similar to the powerControlOffsetSS configured for one CSI-RS resource in the standard, and has good compatibility with the standard.

[0483] As an embodiment, the reference value is the ratio of the CSI-RS EPRE configured for the second CSI-RS resource in the first value set to the synchronization signal EPRE, and the second CSI-RS resource is the first CSI-RS resource in the first CSI-RS resource group.

[0484] As an embodiment, the reference value depends on the first value set, including: the reference value is the ratio of the CSI-RS EPRE configured for the second CSI-RS resource in the first value set to the synchronization signal EPRE, and the second CSI-RS resource is the first CSI-RS resource in the first CSI-RS resource group.

[0485] In the above method, the powerControlOffsetSS configured with the second CSI-RS resource is used, which is similar to the powerControlOffsetSS in the standard being configured for a CSI-RS resource, and has good compatibility with the standard; selecting the second CSI-RS resource as the first CSI-RS resource in the first CSI-RS resource group simplifies the design and makes minor changes to the standard.

[0486] As an embodiment, the reference value is the ratio of the CSI-RS EPRE configured for the second CSI-RS resource in the first value set to the synchronization signal EPRE, and the second CSI-RS resource is the CSI-RS resource with the smallest index or identifier in the first CSI-RS resource group.

[0487] As an embodiment, the reference value depends on the first value set, including: the reference value is the ratio of the CSI-RS EPRE configured for the second CSI-RS resource in the first value set to the synchronization signal EPRE, and the second CSI-RS resource is the CSI-RS resource with the smallest index or identifier in the first CSI-RS resource group.

[0488] In the above method, the powerControlOffsetSS configured for the second CSI-RS resource is used, which is similar to the powerControlOffsetSS in the standard being configured for a CSI-RS resource, and has good compatibility with the standard; the second CSI-RS resource is selected as the CSI-RS resource with the smallest index or identifier in the first CSI-RS resource group, which simplifies the design and makes minor changes to the standard.

[0489] As an embodiment, the reference value is the ratio of the CSI-RS EPRE configured for the second CSI-RS resource in the first value set to the synchronization signal EPRE, and the second CSI-RS resource is the CSI-RS resource with the largest index or identifier in the first CSI-RS resource group.

[0490] As an embodiment, the reference value depends on the first value set, including: the reference value is the ratio of the CSI-RS EPRE configured for the second CSI-RS resource in the first value set to the synchronization signal EPRE, and the second CSI-RS resource is the CSI-RS resource with the largest index or identifier in the first CSI-RS resource group.

[0491] In the above method, the powerControlOffsetSS configured for the second CSI-RS resource is used, which is similar to the powerControlOffsetSS in the standard being configured for a CSI-RS resource, and has good compatibility with the standard; the second CSI-RS resource is selected as the CSI-RS resource with the largest index or identifier in the first CSI-RS resource group, which simplifies the design and makes minor changes to the standard.

[0492] Example 13

[0493] Example 13 illustrates a structural block diagram of a processing device in a first node device according to an embodiment of the present application; Figure 13 As shown in the attached Figure 13 In the embodiment, the processing device 1200 in the first node device includes a first receiver 1201 and a first transmitter 1202.

[0494] As an embodiment, the first node device is a user equipment.

[0495] As an embodiment, the first node device is a relay node device.

[0496] As an embodiment, the first receiver 1201 includes at least one of {antenna 452, receiver 454, receiving processor 456, multi-antenna receiving processor 458, controller / processor 459, memory 460, data source 467} in embodiment 4.

[0497] As an embodiment, the first transmitter 1202 includes at least one of {antenna 452, transmitter 454, transmit processor 468, multi-antenna transmit processor 457, controller / processor 459, memory 460, data source 467} in embodiment 4.

[0498] A first receiver 1201 receives a first CSI reporting configuration, where the first CSI reporting configuration indicates a first CSI-RS resource set for channel measurement, where the first CSI-RS resource set includes multiple CSI-RS resources. The first CSI reporting configuration is used to configure reporting of CSI with a port number P, where P is a positive integer greater than 1. The P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, or the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set.

[0499] The first transmitter 1202 sends a first CSI; the first CSI is the CSI configured by the first CSI reporting configuration for a port number P;

[0500] In embodiment 13, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI, or the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after scaling power; the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource set; in both cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after scaling power only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set.

[0501] As an embodiment, the first CSI indicates the first CSI-RS resource, and the P is equal to the port number of the first CSI-RS resource; or, the first CSI indicates a first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the total port number of all CSI-RS resources in the first CSI-RS resource group is equal to the P, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0502] As an embodiment, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power, including: the channel measurement obtained for the first CSI-RS resource minus a first coefficient is used to calculate the first CSI, and the unit of the first coefficient is dB; the first coefficient is configurable or predefined, or the first coefficient is equal to the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE.

[0503] As an embodiment, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power, including: the channel measurement obtained for the first CSI-RS resource is added with a second coefficient and then used to calculate the first CSI, the unit of the second coefficient is dB; the second coefficient is configurable or predefined, or the second coefficient is equal to the reference value minus the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE.

[0504] As an embodiment, the second coefficient is equal to the reference value minus the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE; the IE used to configure the first CSI-RS resource indicates the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE, and the reference value is indicated by an IE, and the IE indicating the reference value is different from any IE used to configure a CSI-RS resource.

[0505] As an embodiment, each CSI-RS resource in the first CSI-RS resource set is configured with a ratio of CSI-RS EPRE to synchronization signal EPRE; the first value set includes the ratio of CSI-RS EPRE to synchronization signal EPRE configured for each CSI-RS resource in the first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group; the reference value is a value in the first value set, or the reference value depends on the first value set.

[0506] As an embodiment, when the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource group is used to calculate the first CSI, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the total port number of all CSI-RS resources in the first CSI-RS resource group is equal to the P, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0507] Example 14

[0508] Example 14 illustrates a structural block diagram of a processing device in a second node device according to an embodiment of the present application; Figure 14 As shown in the attached Figure 14 In the embodiment, the processing device 1300 in the second node device includes a second transmitter 1301 and a second receiver 1302.

[0509] As an embodiment, the second node device is a base station.

[0510] As an embodiment, the second node device is a user equipment.

[0511] As an embodiment, the second node device is a relay node device.

[0512] As an embodiment, the second transmitter 1301 includes at least one of {antenna 420, transmitter 418, transmit processor 416, multi-antenna transmit processor 471, controller / processor 475, memory 476} in embodiment 4.

[0513] As an embodiment, the second receiver 1302 includes at least one of {antenna 420, receiver 418, receiving processor 470, multi-antenna receiving processor 472, controller / processor 475, memory 476} in embodiment 4.

[0514] The second transmitter 1301 sends a first CSI reporting configuration, where the first CSI reporting configuration indicates a first CSI-RS resource set for channel measurement, where the first CSI-RS resource set includes multiple CSI-RS resources. The first CSI reporting configuration is used to configure reporting of CSI with a port number P, where P is a positive integer greater than 1. The P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, or the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set.

[0515] The second receiver 1302 receives a first CSI, wherein the first CSI is the CSI configured by the first CSI reporting configuration for a port number P;

[0516] In embodiment 14, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI, or the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after scaling power; the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource set; in both cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after scaling power only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set.

[0517] As an embodiment, the first CSI indicates the first CSI-RS resource, and the P is equal to the port number of the first CSI-RS resource; or, the first CSI indicates a first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the total port number of all CSI-RS resources in the first CSI-RS resource group is equal to the P, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0518] As an embodiment, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power, including: the channel measurement obtained for the first CSI-RS resource minus a first coefficient is used to calculate the first CSI, and the unit of the first coefficient is dB; the first coefficient is configurable or predefined, or the first coefficient is equal to the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE.

[0519] As an embodiment, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power, including: the channel measurement obtained for the first CSI-RS resource is added with a second coefficient and then used to calculate the first CSI, the unit of the second coefficient is dB; the second coefficient is configurable or predefined, or the second coefficient is equal to the reference value minus the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE.

[0520] As an embodiment, the second coefficient is equal to the reference value minus the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE; the IE used to configure the first CSI-RS resource indicates the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE, and the reference value is indicated by an IE, and the IE indicating the reference value is different from any IE used to configure a CSI-RS resource.

[0521] As an embodiment, each CSI-RS resource in the first CSI-RS resource set is configured with a ratio of CSI-RS EPRE to synchronization signal EPRE; the first value set includes the ratio of CSI-RS EPRE to synchronization signal EPRE configured for each CSI-RS resource in the first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group; the reference value is a value in the first value set, or the reference value depends on the first value set.

[0522] As an embodiment, when the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource group is used to calculate the first CSI, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the total port number of all CSI-RS resources in the first CSI-RS resource group is equal to the P, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

[0523] Those skilled in the art will appreciate that all or part of the steps in the above method can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a hard disk or an optical disk. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits. Accordingly, each module unit in the above embodiment can be implemented in the form of hardware or in the form of a software functional module. This application is not limited to any specific form of combination of software and hardware. The user equipment, terminal and UE in this application include but are not limited to drones, communication modules on drones, remote-controlled aircraft, aircraft, small aircraft, mobile phones, tablet computers, notebooks, vehicle-mounted communication equipment, wireless sensors, internet cards, Internet of Things terminals, RFID terminals, NB-IOT terminals, MTC (Machine Type Communication) terminals, eMTC (enhanced MTC) terminals, data cards, internet cards, vehicle-mounted communication equipment, low-cost mobile phones, low-cost tablet computers and other wireless communication devices. The base stations or system devices in this application include but are not limited to macrocell base stations, microcell base stations, home base stations, relay base stations, gNB (NR node B) NR node B, TRP (Transmitter Receiver Point) and other wireless communication devices.

[0524] The above description is only a preferred embodiment of the present application and is not intended to limit the scope of protection of the present application. Any changes and modifications made based on the embodiments described in the specification, if they can achieve similar partial or complete technical effects, should be considered obvious and fall within the scope of protection of the present invention.

Claims

1. A first node device for wireless communication, characterized in that: include: A first receiver receives a first CSI reporting configuration, where the first CSI reporting configuration indicates a first CSI-RS resource set for channel measurement, where the first CSI-RS resource set includes multiple CSI-RS resources; the first CSI reporting configuration is used to configure reporting of CSI with a port number P, where P is a positive integer greater than 1; the P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, or the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set; A first transmitter sends a first CSI, wherein the first CSI is the CSI configured by the first CSI reporting configuration for a number of ports P; The channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI, or the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after power scaling; The first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource set; in both cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and in both cases where P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set.

2. The first node device according to claim 1, characterized in that: The first CSI indicates the first CSI-RS resource, and P is equal to the number of ports of the first CSI-RS resource; or, the first CSI indicates a first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the total number of ports of all CSI-RS resources in the first CSI-RS resource group is equal to P, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

3. The first node device according to claim 1 or 2, characterized in that: The channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power, including: the channel measurement obtained for the first CSI-RS resource is subtracted from a first coefficient and used to calculate the first CSI, the unit of the first coefficient is dB; the first coefficient is configurable or predefined, or the first coefficient is equal to the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE.

4. The first node device according to claim 1 or 2, characterized in that: The channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power, including: the channel measurement obtained for the first CSI-RS resource is added with a second coefficient and then used to calculate the first CSI, the unit of the second coefficient is dB; the second coefficient is configurable or predefined, or the second coefficient is equal to a reference value minus the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE.

5. The first node device according to claim 4, characterized in that: The second coefficient is equal to the reference value minus the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE; the IE used to configure the first CSI-RS resource indicates the ratio of the CSI-RS EPRE of the first CSI-RS resource to the synchronization signal EPRE, and the reference value is indicated by an IE, and the one IE indicating the reference value is different from any IE used to configure a CSI-RS resource.

6. The first node device according to claim 4, characterized in that: Each CSI-RS resource in the first CSI-RS resource set is configured with a ratio of CSI-RS EPRE to synchronization signal EPRE; the first value set includes the ratio of CSI-RS EPRE to synchronization signal EPRE configured for each CSI-RS resource in the first CSI-RS resource group, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group; the reference value is a value in the first value set, or the reference value depends on the first value set.

7. The first node device according to any one of claims 1 to 6, characterized in that: When P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource group is used to calculate the first CSI, the first CSI-RS resource group includes multiple CSI-RS resources in the first CSI-RS resource set, the total number of ports of all CSI-RS resources in the first CSI-RS resource group is equal to P, and the first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource group.

8. A second node device for wireless communication, characterized in that: include: A second transmitter sends a first CSI reporting configuration, where the first CSI reporting configuration indicates a first CSI-RS resource set for channel measurement, where the first CSI-RS resource set includes multiple CSI-RS resources; the first CSI reporting configuration is used to configure reporting of CSI with a port number P, where P is a positive integer greater than 1; the P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, or the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set; A second receiver receives a first CSI, wherein the first CSI is the CSI configured by the first CSI reporting configuration for a number of ports P; The channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI, or the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after power scaling; The first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource set; in both cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and in both cases where P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set.

9. A method in a first node for wireless communication, characterized in that include: receiving a first CSI reporting configuration, where the first CSI reporting configuration indicates a first CSI-RS resource set for channel measurement, where the first CSI-RS resource set includes multiple CSI-RS resources; the first CSI reporting configuration is used to configure reporting of CSI with a port number P, where P is a positive integer greater than 1; the P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, or the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set; Sending a first CSI; the first CSI is the CSI configured by the first CSI reporting configuration for a port number P; The channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI, or the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after power scaling; The first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource set; in both cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and in both cases where P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set.

10. A method in a second node for wireless communication, characterized in that: include: Sending a first CSI reporting configuration, where the first CSI reporting configuration indicates a first CSI-RS resource set for channel measurement, where the first CSI-RS resource set includes multiple CSI-RS resources; the first CSI reporting configuration is used to configure reporting of CSI with a port number P, where P is a positive integer greater than 1; the P is equal to the port number of a CSI-RS resource in the first CSI-RS resource set, or the P is greater than the port number of any CSI-RS resource in the first CSI-RS resource set; Receive first CSI; the first CSI is the CSI configured by the first CSI reporting configuration for a port number P; The channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI, or the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after power scaling; The first CSI-RS resource is a CSI-RS resource in the first CSI-RS resource set; in both cases where P is equal to the number of ports of a CSI-RS resource in the first CSI-RS resource set, and in both cases where P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set, the channel measurement obtained for the first CSI-RS resource is used to calculate the first CSI after the scaling power only when P is greater than the number of ports of any CSI-RS resource in the first CSI-RS resource set.

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