System and method for signal channel state information reporting

Abstract

The present disclosure relates to methods, systems, and devices related to wireless communications, and more particularly, to methods, systems, and devices related to single channel state information reporting. A method of wireless communication, the method comprising: receiving, by a wireless communication device, radio resource control (RRC) signaling from a network device; wherein the RRC signaling at least comprises channel state information (CSI) report configuration and CSI resource configuration; transmitting, by the wireless communication device, a complete CSI report according to the RRC signaling; and wherein the complete CSI report comprises a plurality of CSI reports, a method of wireless communication, the method comprising.

Description

Technical Field

[0001] The present disclosure relates generally to wireless communications. Background Art

[0002] Wireless communication technology is driving the world towards an increasingly connected and networked society. The rapid development of wireless communications and technological advances have led to greater demands for capacity and connectivity. Other aspects, such as energy consumption, equipment cost, spectrum efficiency and latency, are also important to meet the needs of various communication scenarios. Compared with existing wireless networks, next-generation systems and wireless communication technologies need to support an increased number of users and devices, as well as an increasingly mobile society. Summary of the invention

[0003] Various techniques related to channel state information reporting are disclosed, which can be implemented by embodiments in mobile communication technologies, including fifth generation (5G), new radio (NR), fourth generation (4G), and long term evolution (LTE) communication systems.

[0004] In one example aspect, a wireless communication method is disclosed. The method includes: receiving, by a wireless communication device, a radio resource control (RRC) signaling from a network device; wherein the RRC signaling includes at least a channel state information (CSI) report configuration and a CSI resource configuration; transmitting, by the wireless communication device, a complete CSI report according to the RRC signaling; wherein the complete CSI report includes multiple CSI reports.

[0005] In another example aspect, another wireless communication method is disclosed. The method includes: transmitting radio resource control (RRC) signaling from a network device to a wireless communication device; wherein the RRC signaling includes at least a channel state information (CSI) report configuration and a CSI resource configuration; receiving a complete CSI report from the wireless communication device according to the RRC signaling; wherein the complete CSI report includes multiple CSI reports.

[0006] In yet another exemplary aspect, the method described above is embodied in the form of a computer-readable medium storing processor-executable code for implementing the method.

[0007] In yet another exemplary aspect, a device configured or operable to perform the method described above is disclosed. The device includes a processor configured to implement the method.

[0008] The above and other aspects and embodiments thereof are described in more detail in the drawings, the description and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 An example of a predefined table is shown.

[0010] Figure 2 An example of a predefined table is shown.

[0011] Figure 3 An example of simulation results of reporting multiple CSIs in one report is shown.

[0012] Figure 4 Another example of simulation results of reporting multiple CSIs in one report is shown.

[0013] Figure 5 is a flow chart illustrating an example method.

[0014] Figure 6 is a flow chart illustrating an example method.

[0015] Figure 7 is an example block diagram of a wireless communication system.

[0016] Figure 8 is a flow chart of an example method of wireless communication. DETAILED DESCRIPTION

[0017] The section headings used in this document are intended only to improve readability and do not limit the scope of the embodiments and techniques disclosed in each section to only that section. Certain features are described using examples of fifth generation (5G) wireless protocols. However, the applicability of the disclosed techniques is not limited to 5G wireless systems.

[0018] Large bandwidth, multi-antenna transmitters or receivers are used in 5G communication systems. When multiple channel state information (CSI) reports are reported, the RI (rank indicator) overhead is large. In this document, joint coded RI and differential (or offset) RI reporting are proposed.

[0019] The number of ports for CSI-RS (reference signal) is configured by nrofPorts in CSI-ResourceMapping, which is associated with NZP-CSI-RS resource. The nrofPorts can be one of the following: p1, p2, p4, p8, p12, p16, p24, p32. NZP-CSI-RS-Resource includes power control offset (powerControlOffset) and power control offset SS (powerControlOffsetSS), which can affect the transmission power.

[0020] powerControlOffset: It is the assumed ratio of PDSCH EPRE to NZP CSI-RS EPRE when the UE derives CSI feedback and takes values ​​in the range of [-8,15] dB in 1 dB steps.

[0021] powerControlOffsetSS: This is the assumed ratio of NZP (non-zero power) CSI-RS EPRE to SS / PBCH (synchronization signal / physical broadcast channel) block EPRE (energy per resource element).

[0022] If the number of base station antennas or the base station transmission power changes, the channel may change. It is helpful if the UE (user equipment) can provide channel measurements for different numbers of antenna ports or different base station transmission powers. In the prior art, most CSI-RS resource settings and CSI report configurations are configured through RRC (Radio Resource Control) signaling. Typically, one CSI-ReportConfig is associated with one CSI-ResourceConfig with one number of ports or one transmission power. That is, a CSI report only includes a report on a CSI-RS with one number of ports or one transmission power. If the UE needs to report a CSI report on a CSI-RS with multiple numbers of ports or multiple transmission powers, the UE should report multiple CSI reports, and each CSI report includes a report on one number of ports or one transmission power. This method requires reporting multiple RIs. In this document, in order to reduce the overhead of multiple RIs, a method is provided in which the UE reports multiple CRIs associated with the reporting setting, and RIs reported for each number of ports or different transmission powers in a single reporting instance.

[0023] From the UE side, RRC signaling including at least CSI report configuration information and CSI resource configuration information is received. Then, joint coding or differential operation of multiple RIs is performed, and then, a complete CSI report is reported according to the RRC signaling. The complete CSI report contains multiple CSI reports. Each CSI report contains a rank indicator (RI) value, which can be explicitly or implicitly indicated.

[0024] An explicitly indicated RI value means that the RI value is specifically defined. An implicitly indicated RI value means that the RI value should be derived from other parameters. For example, the UE reports a code point, and the RI value should be the RI value associated with the code point. For another example, the UE reports an offset value, and the RI value is derived based on the offset value.

[0025] In some embodiments, the RI value is explicitly indicated meaning that the RI value or a parameter for deriving the RI value is transmitted. In some embodiments, the RI value is implicitly indicated meaning that the RI value is not transmitted and the RI value should be derived from other parameters.

[0026] In some embodiments, multiple RI values ​​in a full CSI report are jointly encoded.

[0027] In some embodiments, each RI in the complete CSI report is associated with the number of ports. Being associated with the number of ports means being associated with a resource, and a resource is associated with the number of ports. For example, if the RI is for a CSI resource configuration, and the CSI resource configuration includes a CSI resource configured with multiple ports, then the RI is associated with the number of ports. For another example, if the RI is for a CSI resource set, and the CSI resource set includes a CSI resource configured with multiple ports, then the RI is associated with the number of ports.

[0028] The resource may be associated with a port number or a power offset.In some embodiments, the resources including one or more CSI resources may include at least one of: a CSI resource, a CSI resource set, a CSI resource group, a CSI resource setting, and a CSI resource set group.

[0029] The maximum resources may correspond to at least one of: resources associated with a maximum number of ports, resources associated with a minimum powerControlOffset, resources associated with a maximum powerControlOffsetSS, resources associated with time and frequency resources, which is the joint (or overall) set of all resources associated with the same CSI report.

[0030] Different resources may include at least: resources with different numbers of ports, resources with different power control offsets, and resources with different power control offsets SS.

[0031] In some embodiments, the first resource associated with the first CSI subreport is a subset of the second resource associated with the second CSI subreport. In some embodiments, the subset means that the time and frequency resources of the first resource are a part (or subset) of the time and frequency resources of the second resource. In some embodiments, the first resource is a subset of the second resource, which means that the number of ports associated with the first resource is less than or equal to the number of ports associated with the second resource. In some embodiments, the first resource is a subset of the second resource, which means that the power offset associated with the first resource is greater than or equal to the power offset associated with the second resource. In some embodiments, the first resource is a subset of the second resource, which means that the first resource overlaps with the second resource.

[0032] In some embodiments, a first RI value associated with a first number of ports is greater than or equal to a second RI value associated with a second number of ports. The first number of ports is greater than the second number of ports. The same relationship applies to subsequent RI values.

[0033] In some embodiments, joint encoding is applied if the number of codewords associated with each number of ports is 1. In some embodiments, joint encoding is applied if the number of codewords associated with each number of ports is the same.

[0034] In some embodiments, if each RI is not greater than 4, joint coding is applied.

[0035] In some embodiments, each RI in the full CSI report is associated with a different transmit power.

[0036] In some embodiments, a first RI value associated with a first transmission power is greater than or equal to a second RI value associated with a second transmission power. The first transmission power is greater than the second transmission power. The same relationship applies to subsequent RI values.

[0037] Joint coding means that the code point of the RI indication indicates multiple RI values ​​in one CSI report. In the prior art, the code point of the RI indication indicates one RI value. In some embodiments, each RI value in the multiple RI values ​​is associated with the number of ports.

[0038] In some embodiments, a predefined table is provided, and the codepoints indicated by the RI are reported in the full CSI report. Each codepoint is associated with a set of RI values, which are associated with different resources or port numbers.

[0039] Table 1 shows an example of a predefined table.

[0040] Table 1

[0041]

[0042] Table 2 below shows another example of a predefined table. In this example, 3 RI values ​​are reported in a complete CSI report. Different RIs are associated with different numbers of ports. For example, RI#1 is an RI value for a CSI resource configuration including a CSI resource configured with 32 ports, RI#2 is an RI value for a CSI resource configuration including a CSI resource configured with 16 ports, and RI#3 is an RI value for a CSI resource configuration including a CSI resource configured with 8 ports. The maximum RI value is 4.

[0043] Table 2

[0044]

[0045]

[0046] Table 3 below shows another example of a predefined table. In this example, 2 RI values ​​are reported in one multiple CSI report.

[0047] Table 3

[0048] Code Point RI#1 RI#2 0000 4 4 0001 4 3 0010 4 2 0011 4 1 0100 3 3 0101 3 2 0110 3 1 0111 2 2 1000 2 1 1001 1 1

[0049] Other examples of the predefined tables are shown in Tables 4 to 7 below. 4 RI values, 3 RI values, and 2 RI values ​​may be obtained in one complete CSI report.

[0050] Table 4

[0051]

[0052]

[0053] Table 5

[0054] Code Point RI#1 RI#2 RI#3 Code Point RI#1 RI#2 RI#3 00000 4 4 0 01111 4 3 2 00001 4 3 0 10000 4 3 1 00010 4 2 0 10001 4 2 2 00011 4 1 0 10010 4 2 1 00100 3 3 0 10011 4 1 1 00101 3 2 0 10100 3 3 3 00110 3 1 0 10101 3 3 2 00111 2 2 0 10110 3 3 1 01000 2 1 0 10111 3 2 2 01001 1 1 0 11000 3 2 1 01010 4 4 4 11001 3 1 1 01011 4 4 3 11010 2 2 2 01100 4 4 2 11011 2 2 1 01101 4 4 1 11100 2 1 1 01110 4 3 3 11101 1 1 1

[0055] Table 6

[0056] Code Point RI#1 RI#2 RI#3 Code Point RI#1 RI#2 RI#3 00000 4 4 4 01010 4 4 3 00001 4 3 3 01011 4 4 2 00010 4 2 2 01100 4 4 1 00011 4 1 1 01101 4 3 2 00100 3 3 3 01110 4 3 1 00101 3 2 2 01111 4 2 1 00110 3 1 1 10000 3 3 2 00111 2 2 2 10001 3 3 1 01000 2 1 1 10010 3 2 1 01001 1 1 1 10011 2 2 1

[0057] Table 7

[0058]

[0059]

[0060] Taking Table 6 above as an example, when only one table is defined to represent the relationship between 2 RIs and 3 RIs, taking the first 4 bits or the last 4 bits of the 10 code points can also generate as shown in Table 3, as shown in Table 6-1 and Table 6-2, and similarly as shown in Table 6-1 and Table 6-2. Figure 1 to Figure 2 Results shown.

[0061] Table 6-1

[0062]

[0063] Table 6-2

[0064]

[0065] In some embodiments, a first RI value associated with the first number of ports is greater than or equal to a second RI value associated with the second number of ports. The first number of ports is greater than the second number of ports.

[0066] In some embodiments, more than one predefined table is provided, and different predefined values ​​are used for different numbers of RI values ​​reported in a full CSI report. For example, if two RI values ​​need to be reported in a full CSI report, Table 3 is used; if three RI values ​​need to be reported in a full CSI report, Table 2 is used.

[0067] In some embodiments, a predefined table is provided for different numbers of RI values ​​reported in a full CSI report. For example, if two RI values ​​or three RI values ​​need to be reported in a full CSI report, Table 4, Table 5 or Table 6 can be used. It is emphasized that when two RI values ​​need to be reported in a full CSI report, only the first four bits or the last four bits of the code point indicate the RI value.

[0068] In some embodiments, if more than two RI values ​​are reported in one full CSI report, joint coding is used. In some embodiments, if the full CSI report is associated with or is associated with different numbers of resource ports, joint coding is used to report RI values ​​in one full CSI report. The different numbers of resource ports correspond to CSI resource configurations, CSI-RS resource sets, CSI-RS resources, CSI-RS resource set groups, or CSI-RS resource groups configured with different numbers of ports.

[0069] In some embodiments, RI values ​​for different numbers of resource ports reported in one complete CSI report are reported or encoded separately according to a predefined order.

[0070] In some embodiments, the predefined order can be at least one of the following orders: the order of resource group IDs associated with the CSI report, the order of associated port numbers (e.g., from large to small), and the order of associated power offsets (e.g., from large to small).

[0071] For example, the order of the associated port numbers can be that the RI values ​​for 32, 16, 8, and 4 ports are reported in one CSI report. The RI value for 32 ports is reported directly. The differential RI values ​​for other port numbers are reported in the order of the differential RI value associated with 16 ports, the differential RI value associated with 8 ports, and the differential RI value associated with 4 ports. The order of the number of ports / power offsets configured in the CSI report configuration means first sorting the order of CSI resources (e.g., NZP-CSI-RS-Resource), then the order of CSI resource sets (NZP-CSI-RS-ResourceSet), and then the order of CSI resource settings (CSI-ResourceConfig) associated with the CSI report configuration, for each port number or power offset.

[0072] In some embodiments, the RI value for the resource associated with the maximum number of ports is reported directly. The RI values ​​for the resources associated with other numbers of ports are reported via differential (or offset) RI values. The differential (or offset) RI value indicates the difference between the reference RI value and the RI value.

[0073] In some embodiments, the RI value for a resource associated with the minimum powerControlOffset is reported directly. The RI values ​​for resources associated with other powerControlOffsets are reported via differential (or offset) RI values. The differential (or offset) RI value indicates the difference between the reference RI value and the RI value.

[0074] In some embodiments, the RI value for a resource associated with the maximum powerControlOffsetSS is reported directly. The RI values ​​for a resource associated with other values ​​of powerControlOffsetSS are reported via a differential (or offset) RI value. The differential (or offset) RI value indicates the difference between the reference RI value and the RI value.

[0075] The resource for the maximum RI value is indicated by one of: indicating a resource ID (e.g., CSI-ResourceConfigID or CSI resource set ID, or CSI resource ID), indicating a resource group ID (e.g., CSI resource set group ID, CSI resource group ID), indicating the number of ports, and indicating a power offset (powerControlOffset, powerControlOffsetSS), indicating CRI.

[0076] In some embodiments, the differential (or offset) RI values ​​for other resources are reported in order. The order is one of the following: the order of resource ID, the order of resource group ID, and the order of port number (e.g., from large to small).

[0077] In some embodiments, the reference RI value is one of the following: the RI value of the resource associated with the maximum number of ports in the same complete CSI report; the maximum RI value in the same complete CSI report; and the previous RI value. For example, the previous RI value of the Nth RI value is the N-1th RI value. In some embodiments, the order of the RI values ​​is the same as the order of the number of ports associated with the CSI report configuration. For example, a CSI report configuration is associated with three CSI resource configurations. The number of ports of the three CSI resource configurations is 32 ports, 24 ports, and 16 ports, respectively. Then the first RI value is the RI value for the CSI resource configuration configured with 32 ports, the second RI value is the RI value for the CSI resource configuration configured with 24 ports, and the third RI value is the RI value for the CSI resource configuration configured with 16 ports.

[0078] In some embodiments, the differential (or offset) RI value indicates a value X, which means that the RI value is X less than the reference RI value. X is an integer greater than or equal to 0 and less than 7. In some embodiments, X may be 0, 1. In some embodiments, X may be 0, 1, 2, 3. In some embodiments, X may be 0, 1, 2, 4. In other words, the RI value derived from the differential RI value and the reference RI value is equal to the reference RI value - X.

[0079] In some embodiments, the differential (or offset) RI value is indicated by 1 bit. '0' means X=0, '1' means X=1.

[0080] In some embodiments, the differential (or offset) RI value is indicated by Y bits. Each code point of the Y bits corresponds to a value of X. The relationship between the code point and X is predefined.

[0081] In some embodiments, the differential (or offset) RI value indicates the number of steps (e.g., U) corresponding to the reference RI value. The step size is 1 or 2. The RI value derived from the differential RI value is equal to the reference RI value-U*step size. U is an integer greater than or equal to 0 and less than 4.

[0082] Table 8 shows an example of differential (or offset) RI. In this example, 4 RI values ​​need to be reported and the RI value for the maximum number of ports is reported. The RI values ​​for other numbers of ports are reported using differential RI values.

[0083] Table 8

[0084]

[0085] In Example 1, the reference RI value is the RI value for the maximum number of ports. The differential RI value indicates X, and the RI value is equal to the reference RI value - X. Therefore, RI#2=4, RI#3=RI#4=3.

[0086] In Example 2, the reference RI value is the RI value for the maximum number of ports. The differential RI value indicates U, and the RI value is equal to the reference RI value-U*step size. Therefore, RI#2=RI#3=6, RI#4=4.

[0087] In Example 3, the reference RI value is the previous RI value. The differential RI value indicates X, and the RI value is equal to the reference RI value - X. Therefore, RI#2=4, RI#3=RI#4=3.

[0088] In some embodiments, only one RI value needs to be reported. The RI value is the RI value for the maximum number of ports. Other RI values ​​associated with the number of ports are the same as the RI value.

[0089] In some embodiments, one RI value needs to be reported. The RI value is the RI value of the maximum transmission power. Other RI values ​​associated with the transmission power are the same as the RI value.

[0090] In some embodiments, a portion of the RI values ​​are reported and other RI values ​​may be obtained by linear interpolation and / or the reported RI values. Tables 8 to 11 indicate the function f of the linear interpolation.

[0091] In some embodiments, the RI value of the odd position or the even position is reported, and the other RI values ​​are not reported. The RI value of the odd position can be obtained by interpolating the RI value of the even position, or the RI value of the even position can be obtained by linearly interpolating the RI value of the odd position. For example, the value of RI#2 can be obtained by linearly interpolating RI#1 and RI#3 and rounding, and the value of RI#4 can be obtained in the same way. Note that the minimum value of the RI value is 1, as shown in Table 9. For another example, the value of RI#3 can be obtained by linearly interpolating RI#2 and RI#4 and rounding, and the value of RI#1 can be obtained in the same way. Note that the maximum value of the RI value is 4, as shown in Table 10.

[0092] In some embodiments, the RI value can be obtained by the previous RI value and linear interpolation. For example, the value of RI#2 can be obtained by RI#1-step, where step is equal to RI1 minus RI4 and divided by 2, and then the value of RI#3 can be obtained by linearly interpolating RI#2 and RI#4 and rounding, as shown in Table 11. For another example, the value of RI#3 can be obtained by RI#4+step, where step is equal to RI1 minus RI4 and divided by 2, and then the value of RI#2 can be obtained by linearly interpolating RI#1 and RI#3 and rounding, as shown in Table 12. Note that the maximum and minimum values ​​of the RI value are 4 and 1.

[0093] Linear interpolation means using a straight line connecting two known values ​​to determine an unknown value between those two known values.

[0094] Rounding means taking the integer or the nearest integer.

[0095] Table 9

[0096]

[0097] Table 10

[0098]

[0099] Table 11

[0100]

[0101] Table 12

[0102]

[0103] Figure 3 The simulation results of reporting multiple CSI in one report are shown. The UE measures and generates multiple CSIs based on CSI resources associated with different numbers of ports and reports multiple CSIs in one report. The gNB can dynamically adjust the number of TxRUs among {64TxRU, 32TxRU, 16TxRU, 8TxRU, 4TxRU} based on CSI reporting. When the gNB turns off some TxRUs, power consumption can be reduced.

[0104] According to simulation results, dynamically adjusting TxRUs based on multiple CSIs in one report has up to 21.15% energy saving gain compared to the baseline scheme where the gNB always turns on 64 TxRUs.

[0105] Figure 4Another simulation result of reporting multiple CSI in one report is shown. The UE measures and generates multiple CSI according to CSI resources associated with different power offset configurations and reports multiple CSI in one report. The gNB can dynamically adjust the transmission power of PDSCH between {55dBm, 52dBm, 49dBm, 46dBm, 43dBm} based on the CSI report. When the gNB reduces the transmission power, the power consumption can be reduced.

[0106] According to simulation results, dynamically adjusting the transmission power according to multiple CSIs in one report has an energy saving gain of up to 23.76% compared with the baseline scheme, which is that the transmission power is always 55dBm.

[0107] Therefore, some preferred embodiments may use the following solutions.

[0108] 1. A method of wireless communication, such as Figure 5 Disclosed: includes receiving a radio resource control (RRC) signaling (502) from a network device by a wireless communication device; wherein the RRC signaling includes at least a channel state information (CSI) report configuration and a CSI resource configuration; transmitting a complete CSI report (504) by the wireless communication device according to the RRC signaling; wherein the complete CSI report includes multiple CSI reports. Additional details and examples are in the detailed description and reference Figures 1 to 4 Let's discuss.

[0109] 2. The method according to solution 1, wherein each CSI report contains a rank indicator (RI) value, which can be indicated explicitly or implicitly.

[0110] 3. The method according to solution 2, wherein the RI value in each CSI report is associated with the resources used for the CSI report.

[0111] 4. The method according to solution 3, wherein the resource used for CSI reporting is at least one of the following: a CSI resource, a CSI resource set, a CSI resource group, a CSI resource setting, and a CSI resource set group.

[0112] 5. The method according to solution 4, wherein the resource includes at least one of the following: number of ports and transmission power offset.

[0113] 6. A method according to solution 5, wherein the first RI value is associated with a first resource used for CSI reporting; wherein the second RI value is associated with a second resource used for CSI reporting; wherein the second RI value is less than or equal to the first RI value; and wherein the second resource is a subset of the first resource.

[0114] 7. The method of solution 6, wherein the RI value in the full CSI report is implicitly indicated based on joint coding; wherein the joint coding further comprises: determining a code point associated with the RI value in the full CSI report.

[0115] 8. The method of solution 7, wherein the RI value in the full CSI report satisfies the following condition: the second RI value is less than or equal to the first RI value, wherein the second resources associated with the second RI value are a subset of the first resources associated with the first RI value.

[0116] 9. The method of solution 8, wherein the code points associated with the RI values ​​are identified in a predefined table.

[0117] 10. The method of solution 9, wherein different predefined tables are used for different numbers of RI values ​​reported in a full CSI report.

[0118] 11. A method according to solution 9, wherein a sub-predefined table for a first number of RI values ​​associated with code points in a full CSI report is derived from a predefined table; wherein the code points in the sub-predefined table are part of the code points in the predefined table; wherein the first number of RI values ​​in the sub-predefined table is less than the number of RI values ​​associated with the code points in the predefined table; wherein the sub-predefined table identifies the number of RI values ​​in the full CSI report.

[0119] 12. A method according to Solution 3, wherein the RI values ​​in the full CSI report are reported or encoded according to a predefined order; wherein the predefined order includes at least one of the following orders: the order of resource group IDs associated with the CSI report, the order of port numbers, and the order of transmission power offsets.

[0120] 13. A method according to solution 2, wherein the complete CSI report also includes multiple types of CSI reports; wherein the explicit RI value is associated with the first type of CSI report; wherein the implicit RI value is associated with the second type of CSI report; wherein the implicit RI value is an offset value; wherein the offset value is the difference between the reference RI value and the RI value associated with the second type of CSI report.

[0121] 14. The method of solution 13, wherein the first type of CSI report is associated with a maximum resource and the second type of CSI report is not associated with a maximum resource.

[0122] 15. The method according to solution 13, wherein the reference RI value of the Nth CSI report is the RI value of the (N-1)th CSI report.

[0123] 16. The method of solution 13, wherein the reference RI value is an explicit RI value associated with a first type of CSI report, the first type of CSI report comprising at least one of: a CSI report associated with a maximum RI value and a predefined CSI report.

[0124] 17. A method according to solution 2, wherein, based on the RI value of the CSI report associated with the maximum resource, the RI value of the CSI report associated with the maximum resource is explicitly indicated, and other RI values ​​are implicitly indicated; wherein the other RI values ​​are equal to the RI value of the CSI report associated with the maximum resource.

[0125] 18. According to the method described in Solution 2, the complete CSI report also includes a third type of CSI report; wherein the explicit RI value is associated with the third type of CSI report; wherein the implicit RI value is associated with other types of CSI reports; wherein the implicit RI value is obtained by the RI value of the third type of CSI report or by a linear interpolation operation.

[0126] 19. The method of solution 18, wherein the third type of CSI report is at least one of: a CSI report associated with an odd index, a CSI report associated with an even index, a predefined CSI report, and a CSI report associated with a predefined resource.

[0127] 20. A method of wireless communication, such as Figure 6 Disclosed: includes transmitting radio resource control (RRC) signaling (602) from a network device to a wireless communication device; wherein the RRC signaling includes at least a channel state information (CSI) report configuration and a CSI resource configuration; receiving a complete CSI report (604) from the wireless communication device according to the RRC signaling; wherein the complete CSI report includes multiple CSI reports. Additional details and examples are in the detailed description and reference Figures 1 to 4 Let's discuss.

[0128] 21. The method of solution 20, wherein each CSI report contains a rank indicator (RI) value, which may be indicated explicitly or implicitly.

[0129] 22. The method of solution 21, wherein the RI value in each CSI report is associated with a resource used for the CSI report.

[0130] 23. The method of solution 22, wherein the resource used for CSI reporting is at least one of: a CSI resource, a CSI resource set, a CSI resource group, a CSI resource setting, and a CSI resource set group.

[0131] 24. The method of solution 23, wherein the resource comprises at least one of: a number of ports and a transmission power offset.

[0132] 25. A method according to solution 24, wherein the first RI value is associated with a first resource used for CSI reporting; wherein the second RI value is associated with a second resource used for CSI reporting; wherein the second RI value is less than or equal to the first RI value; wherein the second resource is a subset of the first resource.

[0133] 26. A method according to solution 25, wherein the RI value in the full CSI report is implicitly indicated based on joint coding; wherein the joint coding further includes: determining a code point associated with the RI value in the full CSI report.

[0134] 27. A method according to solution 26, wherein the RI value in the full CSI report satisfies the following conditions: the second RI value is less than or equal to the first RI value, wherein the second resources associated with the second RI value are a subset of the first resources associated with the first RI value.

[0135] 28. The method of solution 27, wherein the code points associated with the RI values ​​are identified in a predefined table.

[0136] 29. The method of solution 28, wherein different predefined tables are used for different numbers of RI values ​​reported in a full CSI report.

[0137] 30. A method according to solution 28, wherein a sub-predefined table for a first number of RI values ​​associated with code points in a full CSI report is derived from a predefined table; wherein the code points in the sub-predefined table are part of the code points in the predefined table; wherein the first number of RI values ​​in the sub-predefined table is less than the number of RI values ​​associated with the code points in the predefined table; wherein the sub-predefined table identifies the number of RI values ​​in the full CSI report.

[0138] 31. A method according to solution 22, wherein the RI values ​​in the full CSI report are reported or encoded according to a predefined order; wherein the predefined order includes at least one of the following orders: the order of resource group IDs associated with the CSI report, the order of port numbers, and the order of transmission power offsets.

[0139] 32. A method according to Solution 21, wherein the complete CSI report also includes multiple types of CSI reports; wherein the explicit RI value is associated with the first type of CSI report; wherein the implicit RI value is associated with the second type of CSI report; wherein the implicit RI value is an offset value; wherein the offset value is the difference between the reference RI value and the RI value associated with the second type of CSI report.

[0140] 33. The method of solution 32, wherein the first type of CSI report is associated with a maximum resource and the second type of CSI report is not associated with a maximum resource.

[0141] 34. The method of solution 32, wherein the reference RI value of the Nth CSI report is the RI value of the (N-1)th CSI report.

[0142] 35. The method of solution 32, wherein the reference RI value is an explicit RI value associated with a first type of CSI report, the first type of CSI report comprising at least one of: a CSI report associated with a maximum RI value and a predefined CSI report.

[0143] 36. A method according to solution 21, wherein, based on the RI value of the CSI report associated with the maximum resource, the RI value of the CSI report associated with the maximum resource is explicitly indicated, and other RI values ​​are implicitly indicated; wherein the other RI values ​​are equal to the RI value of the CSI report associated with the maximum resource.

[0144] 37. According to the method described in Solution 21, the complete CSI report also includes a third type of CSI report; wherein the explicit RI value is associated with the third type of CSI report; wherein the implicit RI value is associated with other types of CSI reports; wherein the implicit RI value is obtained by the RI value of the third type of CSI report or by a linear interpolation operation.

[0145] 38. The method of solution 18, wherein the third type of CSI report is at least one of: a CSI report associated with an odd index, a CSI report associated with an even index, a predefined CSI report, and a CSI report associated with a predefined resource.

[0146] 39. A communication device comprising a processor configured to implement the method according to any one or more of solutions 1 to 38.

[0147] 40. A computer-readable medium having code stored thereon, which, when executed, causes a processor to implement the method according to any one or more of solutions 1 to 38.

[0148] Figure 7 An example of a wireless communication system (e.g., Long Term Evolution (LTE), 5G, or NR cellular network) is shown, which includes a BS 120 and one or more user equipment (UE) 111, 112, and 113. In some embodiments, uplink transmissions (131, 132, 133) may include uplink control information (UCI), higher layer signaling (e.g., UE assistance information or UE capabilities), or uplink information. In some embodiments, downlink transmissions (141, 142, 143) may include DCI or higher layer signaling or downlink information. For example, the UE may be a smartphone, a tablet, a mobile computer, a machine-to-machine (M2M) device, a terminal, a mobile device, an Internet of Things device (IoT), and the like.

[0149] Figure 8 is a block diagram representation of a portion of an apparatus according to some embodiments of the presently disclosed technology. Apparatus 205 (such as a network device or base station or wireless device (or UE)) may include a processor electronic device 210 such as a microprocessor that implements one or more of the techniques presented in this document. Apparatus 205 may include transceiver electronic device 215 to send and / or receive wireless signals through one or more communication interfaces (such as antenna 220). Apparatus 205 may include other communication interfaces for transmitting and receiving data. Apparatus 205 may include one or more memories (not explicitly shown) configured to store information such as data and / or instructions. In some embodiments, processor electronic device 210 may include at least a portion of transceiver electronic device 215. In some embodiments, at least some of the disclosed techniques, modules, or functions are implemented using apparatus 205.

[0150] Some of the embodiments described herein are described in the general context of methods or processes, which can be implemented by a computer program product in one embodiment, embodied in a computer-readable medium including computer-executable instructions such as program code, and executed by a computer in a network environment. Computer-readable media may include removable and non-removable storage devices, including but not limited to read-only memory (ROM), random access memory (RAM), compact disc (CD), digital versatile disk (DVD), etc. Therefore, computer-readable media may include non-transitory storage media. Generally, program modules may include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. Computer-executable instructions or processor-executable instructions, associated data structures, and program modules represent examples of program codes for performing the steps of the methods disclosed herein. A specific sequence of such executable instructions or associated data structures represents an example of corresponding actions for implementing the functions described in such steps or processes.

[0151] Some of the disclosed embodiments may be implemented as devices or modules using hardware circuits, software or combinations thereof. For example, a hardware circuit implementation may include discrete analog and / or digital components, which are, for example, integrated as a part of a printed circuit board. Alternatively or additionally, the disclosed components or modules may be implemented as application specific integrated circuits (ASIC) and / or field programmable gate arrays (FPGA) devices. Some embodiments may additionally or alternatively include a digital signal processor (DSP), which is a specialized microprocessor with an architecture optimized for the operation needs of digital signal processing associated with the functions disclosed in the present application. Similarly, various components or subcomponents within each module may be implemented in software, hardware or firmware. Connectivity between modules and / or components within a module may be provided using any one of connectivity methods and media known in the art, including but not limited to communications over the Internet, wired or wireless networks using appropriate protocols.

[0152] Although this document contains many details, these details should not be interpreted as limitations on the scope of the claimed invention or the content that can be claimed, but rather as descriptions of features specific to a particular embodiment. Certain features described in this document in the context of a separate embodiment may also be implemented in a combination of a single embodiment. Conversely, the various features described in the context of a single embodiment may also be implemented in multiple embodiments individually or in any suitable sub-combination. In addition, although features may be described above as working in certain combinations or even combinations that were originally claimed, one or more features from the claimed combination may be deleted from the combination in some cases, and the claimed combination may involve a sub-combination or a variation of a sub-combination. Similarly, although operations are depicted in the accompanying drawings in a particular order, this should not be understood as requiring such operations to be performed in the specific order shown or in a continuous order or performing all illustrated operations to achieve the desired result.

[0153] Only a few implementations and examples are described, and other implementations, enhancements, and variations may be made based on what is described and illustrated in this document.

Claims

1. A method for wireless communication, the method comprising: Receiving, by the wireless communication device, a radio resource control (RRC) signaling from a network device; The RRC signaling includes at least a channel state information (CSI) report configuration and a CSI resource configuration; transmitting, by the wireless communication device, a complete CSI report according to the RRC signaling; and The complete CSI report includes multiple CSI reports.

2. The method according to claim 1, wherein: Each CSI report contains a rank indicator (RI) value, which can be indicated explicitly or implicitly.

3. The method according to claim 2, wherein: The RI value in each CSI report is associated with a resource used for the CSI report.

4. The method according to claim 3, wherein: The resource used for the CSI report is at least one of: a CSI resource, a CSI resource set, a CSI resource group, a CSI resource setting, and a CSI resource set group.

5. The method according to claim 4, wherein: The resources include at least one of: a number of ports and a transmission power offset.

6. The method according to claim 5, wherein: A first RI value is associated with a first resource used for the CSI report; wherein a second RI value is associated with a second resource used for the CSI report; wherein the second RI value is less than or equal to the first RI value; and The second resource is a subset of the first resource.

7. The method according to claim 6, wherein: The RI value in the full CSI report is implicitly indicated based on joint coding; The joint coding further comprises: A codepoint associated with an RI value in the full CSI report is determined.

8. The method according to claim 7, wherein: The RI value in the complete CSI report satisfies the following condition: the second RI value is less than or equal to the first RI value, wherein the second resources associated with the second RI value are a subset of the first resources associated with the first RI value.

9. The method according to claim 8, wherein: The code points associated with the RI values ​​are identified in a predefined table.

10. The method according to claim 9, wherein: Different predefined tables are used for different numbers of RI values ​​reported in the full CSI report.

11. The method according to claim 9, wherein: A first number of sub-predefined tables for RI values ​​associated with code points in the full CSI report are derived from the predefined table; wherein the code points in the sub-predefined table are part of the code points in the predefined table; wherein a first number of RI values ​​in the sub-predefined table is less than a number of RI values ​​associated with code points in the predefined table; and The sub-predefined table identifies the number of RI values ​​in the complete CSI report.

12. The method according to claim 3, wherein: The RI values ​​in the full CSI report are reported or encoded according to a predefined order; and The predefined order includes at least one of the following orders: an order of resource group IDs associated with CSI reports, an order of port numbers, and an order of transmission power offsets.

13. The method according to claim 2, wherein: The complete CSI report also includes multiple types of CSI reports; wherein the explicit RI value is associated with a first type of CSI report; wherein an implicit RI value is associated with a second type of CSI report; wherein the implicit RI value is an offset value; and The offset value is a difference between a reference RI value and an RI value associated with the second type of CSI report.

14. The method according to claim 13, wherein: The first type CSI report is associated with a maximum resource, and the second type CSI report is not associated with the maximum resource.

15. The method according to claim 13, wherein: The reference RI value of the Nth CSI report is the RI value of the (N-1)th CSI report.

16. The method according to claim 13, wherein: The reference RI value is an explicit RI value associated with a first type of CSI report, the first type of CSI report comprising at least one of: a CSI report associated with a maximum RI value and a predefined CSI report.

17. The method according to claim 2, wherein: According to the RI value of the CSI report associated with the maximum resource, the RI value of the CSI report associated with the maximum resource is explicitly indicated, and other RI values ​​are implicitly indicated; and The other RI value is equal to the RI value of the CSI report associated with the maximum resource.

18. The method according to claim 2, wherein the complete CSI report further comprises a third type CSI report; wherein an explicit RI value is associated with the third type of CSI report; wherein implicit RI values ​​are associated with other types of CSI reports; and The implicit RI value is obtained by using the RI value reported by the third type of CSI or by a linear interpolation operation.

19. The method according to claim 18, wherein: The third type of CSI report is at least one of: a CSI report associated with an odd index, a CSI report associated with an even index, a predefined CSI report, and a CSI report associated with a predefined resource.

20. A method of wireless communication, the method comprising: transmitting radio resource control (RRC) signaling from a network device to a wireless communication device; The RRC signaling includes at least a channel state information (CSI) report configuration and a CSI resource configuration; receiving a complete CSI report from the wireless communication device according to the RRC signaling; and The complete CSI report includes multiple CSI reports.

21. The method according to claim 20, wherein: Each CSI report contains a rank indicator (RI) value, which can be indicated explicitly or implicitly.

22. The method according to claim 21, wherein: The RI value in each CSI report is associated with a resource used for the CSI report.

23. The method according to claim 22, wherein: The resource used for the CSI report is at least one of: a CSI resource, a CSI resource set, a CSI resource group, a CSI resource setting, and a CSI resource set group.

24. The method according to claim 23, wherein: The resources include at least one of: a number of ports and a transmission power offset.

25. The method according to claim 24, wherein: A first RI value is associated with a first resource used for the CSI report; wherein a second RI value is associated with a second resource used for the CSI report; wherein the second RI value is less than or equal to the first RI value; and The second resource is a subset of the first resource.

26. The method according to claim 25, wherein: The RI value in the full CSI report is implicitly indicated based on joint coding; and The joint coding further comprises: A codepoint associated with an RI value in the full CSI report is determined.

27. The method according to claim 26, wherein: The RI value in the complete CSI report satisfies the following condition: the second RI value is less than or equal to the first RI value, wherein the second resources associated with the second RI value are a subset of the first resources associated with the first RI value.

28. The method according to claim 27, wherein: The code points associated with the RI values ​​are identified in a predefined table.

29. The method according to claim 28, wherein: Different predefined tables are used for different numbers of RI values ​​reported in the full CSI report.

30. The method of claim 28, wherein: A first number of sub-predefined tables for RI values ​​associated with code points in the full CSI report are derived from the predefined table; wherein the code points in the sub-predefined table are part of the code points in the predefined table; wherein a first number of RI values ​​in the sub-predefined table is less than a number of RI values ​​associated with code points in the predefined table; and The sub-predefined table identifies the number of RI values ​​in the complete CSI report.

31. The method of claim 22, wherein: The RI values ​​in the full CSI report are reported or encoded according to a predefined order; and The predefined order includes at least one of the following orders: an order of resource group IDs associated with CSI reports, an order of port numbers, and an order of transmission power offsets.

32. The method of claim 21, wherein: The complete CSI report also includes multiple types of CSI reports; wherein the explicit RI value is associated with a first type of CSI report; wherein an implicit RI value is associated with a second type of CSI report; wherein the implicit RI value is an offset value; and The offset value is a difference between a reference RI value and an RI value associated with the second type of CSI report.

33. The method of claim 32, wherein: The first type CSI report is associated with a maximum resource, and the second type CSI report is not associated with the maximum resource.

34. The method of claim 32, wherein: The reference RI value of the Nth CSI report is the RI value of the (N-1)th CSI report.

35. The method of claim 32, wherein: The reference RI value is an explicit RI value associated with a first type of CSI report, the first type of CSI report comprising at least one of: a CSI report associated with a maximum RI value and a predefined CSI report.

36. The method of claim 21, wherein: According to the RI value of the CSI report associated with the maximum resource, the RI value of the CSI report associated with the maximum resource is explicitly indicated, and other RI values ​​are implicitly indicated; and The other RI value is equal to the RI value of the CSI report associated with the maximum resource.

37. The method according to claim 21, wherein the complete CSI report further comprises a third type CSI report; wherein an explicit RI value is associated with the third type of CSI report; wherein implicit RI values ​​are associated with other types of CSI reports; and The implicit RI value is obtained by using the RI value reported by the third type of CSI or by a linear interpolation operation.

38. The method of claim 18, wherein: The third type of CSI report is at least one of: a CSI report associated with an odd index, a CSI report associated with an even index, a predefined CSI report, and a CSI report associated with a predefined resource.

39. A communication device comprising a processor configured to implement the method according to any one or more of claims 1 to 38.

40. A computer readable medium having stored thereon code which, when executed, causes a processor to implement the method of any one or more of claims 1 to 38.

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