CSI Enhancement For Dynamic Downlink Transmission Power Adaptation Using Multiple CSI Reporting Configurations

Abstract

A wireless communication system may use multiple power control offsets for CSI-Reference Signal (RS) resources. A network node may provide a channel state information (CSI) report configuration information element to a user equipment (UE). The CSI report configuration information element includes one or both of a list of power control offsets for a CSI-Reference Signal (RS) resource and a list of transmit powers for the CSI-RS. The UE may provide a CSI report with CSI measurements, the CSI measurements corresponding to one or more of the power control offsets.

Description

Technical Field

[0001] The present application generally relates to wireless communication systems, including enhancements to CSI measurement configuration and reporting to better support dynamic PDSCH power adaptation. Background Art

[0002] Wireless mobile communication technologies use various standards and protocols to transmit data between base stations and wireless communication devices. Wireless communication system standards and protocols may include, for example, the 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) (e.g., 4G), 3GPP New Radio (NR) (e.g., 5G), and the IEEE 802.11 standard for wireless local area networks (WLANs) (commonly referred to within industry groups as Wi-Fi). ® ).

[0003] As envisioned by 3GPP, different wireless communication system standards and protocols may use various radio access networks (RANs) to facilitate communication between RAN base stations (which may also be often referred to as RAN nodes, network nodes, or simply nodes) and wireless communication devices, known as user equipment (UE). 3GPP RANs may include, for example, Global System for Mobile Communications (GSM), Enhanced Data Rates for GSM Evolution (EDGE) RAN (GERAN), Universal Terrestrial Radio Access Network (UTRAN), Evolved Universal Terrestrial Radio Access Network (E-UTRAN), and / or Next Generation Radio Access Network (NG-RAN).

[0004] Each RAN can use one or more radio access technologies (RATs) to perform communications between base stations and UEs. For example, GERAN implements GSM and / or EDGE RATs, UTRAN implements Universal Mobile Telecommunications System (UMTS) RATs or other 3GPP RATs, E-UTRAN implements LTE RATs (sometimes referred to herein as LTE), and NG-RAN implements NR RATs (sometimes referred to herein as 5G RATs, 5G NR RATs, or simply NR). In some deployments, E-UTRAN may also implement NR RATs. In some deployments, NG-RAN may also implement LTE RATs.

[0005] The base stations used by the RAN may correspond to the RAN. An example of an E-UTRAN base station is an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) Node B (often also referred to as an evolved Node B, enhanced Node B, eNodeB, or eNB). An example of an NG-RAN base station is a Next Generation Node B (sometimes also referred to as a gNode B or gNB).

[0006] The RAN provides communication services together with external entities through its connection to the Core Network (CN). For example, E-UTRAN can utilize the Evolved Packet Core (EPC), while NG-RAN can utilize the 5G Core Network (5GC). BRIEF DESCRIPTION OF THE DRAWINGS

[0007] To easily identify the discussion of any particular element or action, the most significant digit(s) in a reference number refers to the drawing number that first introduces that element.

[0008] Figure 1 A portion of a CSI-ReportConfig information element according to some embodiments is illustrated.

[0009] Figure 2 The CSI resource set information element and the CSI-RS information element according to some embodiments are illustrated.

[0010] Figure 3 A simplified signal flow diagram for CSI reporting according to some embodiments is illustrated.

[0011] Figure 4 A CSI-RS information element including a powerControlOffsetList according to some embodiments is illustrated.

[0012] Figure 5 A first CSI-RS resource corresponding to a first bitmap and a second CSI-RS resource corresponding to a second bitmap according to some embodiments are illustrated.

[0013] Figure 6 Illustrated is a MAC CE field that may be used to directly update a list of powerControlOffset values ​​for a CSI-RS resource according to some embodiments.

[0014] Figure 7 A MAC CE field is illustrated according to some embodiments, wherein a first CSI-RS resource configuration corresponds to a first bitmap and a second CSI-RS resource corresponds to a second bitmap.

[0015] Figure 8 A flow chart illustrating a method for a network node according to some embodiments is illustrated.

[0016] Figure 9 A flow chart illustrating a method for a UE according to some embodiments is illustrated.

[0017] Figure 10 A flow chart illustrating a method for a network node according to some embodiments is illustrated.

[0018] Figure 11A flow chart illustrating a method for a UE according to some embodiments is illustrated.

[0019] Figure 12 An example architecture of a wireless communication system according to the embodiments disclosed herein is illustrated.

[0020] Figure 13 A system for performing signaling between a wireless device and a network device according to embodiments disclosed herein is illustrated. DETAILED DESCRIPTION

[0021] Various embodiments are described with reference to user equipment (UE). However, reference to UE is provided for illustrative purposes only. Example embodiments may be used with any electronic component that can establish a connection with a network and is configured with hardware, software, and / or firmware for exchanging information and data with the network. Therefore, as described herein, UE is used to represent any suitable electronic component.

[0022] One goal of wireless communication systems is to reduce energy consumption. Optimizing energy usage by UEs and network nodes can be beneficial. Therefore, techniques can be investigated and identified on both the network node (e.g., gNB) and UE sides to improve network energy conservation in base station (BS) transmission and reception. These techniques may include features for more efficient dynamic and / or semi-static operation, as well as finer-grained adaptation of transmission and / or reception. These goals can be achieved by leveraging one or more of the following network energy conservation techniques in the time, frequency, spatial, and power domains, potential support / feedback from UEs, and potential UE assistance information (e.g., RAN1, RAN2).

[0023] Some embodiments herein contribute to network energy conservation. For example, some embodiments provide channel state information (CSI) enhancements for dynamic downlink transmit power adaptation. Some embodiments specify enhancements to CSI-related procedures, including measurement and reporting, as well as signaling, to enable efficient adaptation of the power offset value between the physical downlink shared channel (PDSCH) and the CSI-reference signal (RS) [RAN1, RAN2].

[0024] Figure 1 A portion of a CSI-ReportConfig information element 100 according to some embodiments is illustrated. The network downlink depends on feedback from the UE. Based on this feedback, the network makes scheduling decisions. The feedback from the UE includes a CSI report. The network node may transmit a CSI-ReportConfig information element 100 to the UE to configure the UE.

[0025] The CSI-ReportConfig information element 100 includes information for configuring CSI reporting. For example, the illustrated CSI-ReportConfig information element 100 includes resources for channel measurement and for interference measurement (e.g., resourcesForChannelMeasurement field 102, csi-IM-ResourcesForInterference field 104). The CSI-ReportConfig information element 100 may also include a type field 106 indicating the report type (e.g., periodic, semi-persistent, or aperiodic).

[0026] The CSI-ReportConfig information element 100 may also indicate what the UE is to report in the reportQuantity field 108. For example, the UE may be configured to report channel quality information (CQI), precoding matrix indicator (PMI), and rank indicator (RI). The network may use this information to configure future scheduling. Additional configuration elements, not shown, may be included in the CSI-ReportConfig information element 100.

[0027] In some embodiments, the CSI resource set configured by the CSI-ReportConfig information element 100 may include multiple resources. For example, Figure 2 The CSI resource set information element 202 and the CSI-RS information element 204 are illustrated. The CSI resource set information element 202 may include a plurality of resources. The resources may be configured with the CSI-RS information element 204.

[0028] The CSI-RS information element 204 includes a powerControlOffset field 206. Within each CSI resource, a powerControlOffset field 206 may be present, which may include a power offset. The power offset may indicate the offset between the CSI-RS and the PDSCH. The UE may measure the CSI-RS and report information (e.g., CQI, PMI, RI) to the network based on the offset. The power control offset may be a single value. However, it may be advantageous for the UE to use different power offsets for measuring and reporting the CSI-RS.

[0029] In some embodiments, the network node may be able to dynamically adapt transmit power based on different situations. The UE may provide CSI reports corresponding to multiple different power offset values. Therefore, some embodiments herein provide enhanced CSI measurement configuration and reporting to better support dynamic PDSCH power adaptation. Some embodiments provide detailed mechanisms for CSI-RS configuration. Some embodiments provide detailed mechanisms for CSI report configuration. Some embodiments provide detailed mechanisms for CSI overhead reduction. These embodiments are generally applicable to periodic, semi-persistent, and aperiodic CSI configuration and reporting.

[0030] Figure 3 A simplified signal flow diagram 300 for CSI reporting is illustrated. As shown, a network node 304 may encode a CSI reporting configuration information element (306). The network node 304 may send (308) the CSI reporting configuration information element to a UE 302. The network node 304 may also send (310) a CSI-RS to the UE.

[0031] The UE 302 may receive a CSI reporting configuration and measure (312) a CSI-RS. The UE may generate (314) a CSI report based on the measurement and the CSI reporting configuration. The CSI report may include CQI, PMI, and RI. The reported values ​​may be based on a power offset included in the CSI reporting configuration. The UE 302 may send (316) the CSI report to the network node 304. The network node may configure (318) scheduling with the UE 302 based on the CSI report. In some embodiments, enhanced CSI measurement configuration and reporting may be used to better support dynamic PDSCH power adaptation.

[0032] For example, a CSI report configuration may include CSI-RS resources with a set of power control offset values. In some embodiments, a single CSI-reportConfig may be linked to at least a CSI-RS resource with a set of powerControlOffset values. For example, Figure 4 A CSI-RS information element 400 including a powerControlOffsetList 402 is illustrated according to some embodiments.

[0033] In some embodiments using powerControlOffsetList 402, there is no additional CSI-RS overhead, and the UE can use the same CSI-RS resources to perform CSI measurement and reporting for multiple powerControlOffset values. The CSI-RS resource configuration (e.g., CSI-RS information element 400) can include additional parameters that configure the set of powerControlOffset (power offset of PDSCH resource elements (REs) to non-zero power (NZP) CSI-RS REs) values ​​used by the UE for CSI measurement and reporting. The powerControlOffset values ​​can be included in powerControlOffsetList 402. In some embodiments, the value range 404 can be extended.

[0034] By using a CSI-RS information element 400 that lists multiple value offsets, existing CSI report configurations can be reused. In other words, existing CSI-ReportConfig information elements can be linked to CSI-RS resources with a set of powerControlOffset values. This can improve compatibility and reduce implementation challenges.

[0035] The UE may perform CSI measurements and generate / send reports for one or more powerControlOffset values ​​based on configuration or signaling instructions. In some embodiments, the UE may report CSI for all or a subset of offsets from a list of powerControlOffset values. The UE may determine which powerControlOffset values ​​to report in a variety of ways.

[0036] For example, in some embodiments, the powerControlOffset value for which the UE is to report CSI is based on the RRC configuration. In some embodiments, the UE reports CSI for all powerControlOffset values ​​configured in the CSI-RS resource. In some embodiments, the UE reports CSI for only one of the powerControlOffset values ​​configured in the CSI-RS resource. For example, unless otherwise indicated, the UE may report CSI for the first offset value or the last offset value. If another value other than the default value is required (e.g., the first offset value or the last offset value), the network node may indicate the power control offset value for which the UE is to report CSI. The offset value for which the UE is to report CSI may apply to periodic CSI reporting or by default to other types of CSI reporting.

[0037] In some embodiments, the powerControlOffset value for which the UE is to report CSI is indicated in a Medium Access Control (MAC) Control Element (CE). A network node may use a MAC CE to indicate to the UE the powerControlOffset value for which CSI is to be reported. In some embodiments, a bitmap may be used to indicate the required powerControlOffset values. For example, a MAC CE may include a bitmap where each bit indicates whether the powerControlOffset value corresponding to that bit is activated for CSI reporting.

[0038] For example, the network may configure a bitmap and inform the UE which bits in the bitmap correspond to which powerControlOffset values ​​for the CSI-RS resources. Based on these relationships, the network node may transmit a bitmap to the UE to indicate the offset values ​​for which the UE is to report CSI. For example, the network node may set one or more bits in the bitmap to 1 to indicate that the UE should report CSI for the powerControlOffset values ​​corresponding to those bits. The network node may transmit the bitmap to the UE via a MAC CE. When the UE receives the bitmap, it may determine which powerControlOffset values ​​correspond to the bits set to 1 in the bitmap. The UE may report CSI for those corresponding powerControlOffset values ​​to the network node.

[0039] In some implementations, the length of the bitmap may be equal to the number of configured powerControlOffset values ​​for the CSI-RS resources. Figure 5 The MAC CE field 500 is illustrated, wherein a first CSI-RS resource 502 corresponds to a first bitmap 504, and a second CSI-RS resource 506 corresponds to a second bitmap 508. Thus, the first bitmap 504 may have a length equal to the number of powerControlOffset values ​​of the first CSI-RS resource 502. The second bitmap 508 may have a length equal to the number of powerControlOffset values ​​of the second CSI-RS resource 506.

[0040] In some implementations, the length of the bitmap may be equal to the maximum number of configured powerControlOffset values ​​across all CSI-RS resources. For example, the first bitmap 504 and the second bitmap 508 may have a length equal to the larger of the number of powerControlOffset values ​​for the first CSI-RS resource 502 and the number of powerControlOffset values ​​for the second CSI-RS resource 506.

[0041] In some embodiments, a table may be configured for a CSI-RS resource, where each index into the table points to a list of powerControlOffset values. In this manner, each index into the table may be used by a network node to indicate one or more powerControlOffset values. In some embodiments, a bitmap may be used for each entry in the configuration table, where each bit of the bitmap corresponds to a powerControlOffset value. An index from the table may be included in a MAC CE to indicate to the UE the corresponding list of powerControlOffset values ​​for which the UE is to report CSI.

[0042] In some implementations, an index may be defined for each powerControlOffset value, and the network node uses one or more indices to indicate the powerControlOffset values ​​for which the UE is to report CSI.

[0043] For semi-persistent CSI reporting on the Physical Uplink Control Channel (PUCCH), a bitmap, one or more indexes may be added as new fields in the existing semi-persistent CSI reporting on the PUCCH activation / deactivation MAC CE.

[0044] In some implementations, the UE determines the powerControlOffset value for which to report CSI based on the powerControlOffset value directly within the MAC CE. The network may provide the UE with one or more powerControlOffset values ​​for the CSI-RS resources within the MAC CE. The UE may use the MAC CE to update the list of powerControlOffset values ​​for the CSI-RS resources.

[0045] Alternatively, the network may use MAC CE to directly update the list of powerControlOffset values ​​for the CSI-RS resource, rather than configuring a superset of potential powerControlOffset values ​​as part of the CSI-RS resource configuration and using MAC CE to activate / deactivate. Figure 6An example MAC CE field 600 is shown that can be used to directly update a list of powerControlOffset values ​​for a CSI-RS resource. As shown, the MAC CE field 600 includes a first list 604 of offset values ​​for a first CSI-RS resource 602 and a second list 608 of offset values ​​for a second CSI-RS resource 606. The offset value lists (e.g., first list 604 and second list 608) can include power offset values ​​(e.g., 0 dB, 9 dB, etc.) for the corresponding CSI-RS resources. For semi-persistent CSI reporting on the PUCCH, these fields can be added as new fields to the existing semi-persistent CSI reporting on the PUCCH activation / deactivation MAC CE.

[0046] In some embodiments, the UE may determine the powerControlOffset value for which to report CSI based on a dynamic indication in the downlink control information (DCI) for aperiodic CSI reporting or semi-persistent CSI reporting on PUSCH. Both aperiodic CSI reporting and semi-persistent CSI reporting on PUSCH are triggered by DCI, and the corresponding indication may be carried in the triggering DCI. In some embodiments, the indication in the DCI may be a bitmap, where each bit corresponds to one or more powerControlOffset values, as previously discussed. In some embodiments, the indication in the DCI may be an index into a table, where the index corresponds to one or more powerControlOffset values, as previously discussed. In some embodiments, the indication in the DCI may be one or more indices, where each index corresponds to one powerControlOffset value, as previously discussed. In this case, a single index may be used to save DCI overhead.

[0047] Because overhead is a significant consideration for DCI, some information can be omitted in some implementations. For example, to save DCI overhead, the NZP-CSI-RS-ResourceId can be omitted. When the NZP-CSI-RS-ResourceId is omitted, only one CSI-RS resource with multiple configured powerControlOffset values ​​may be present in the triggered CSI report. If only one CSI-RS resource exists, the NZP-CSI-RS-ResourceId may not be needed to identify which CSI-RS resource the powerControlOffset value corresponds to.

[0048] The content of the CSI report transmitted from the UE to the network node may include information from the CSI-RS measurement for the powerControlOffset value. In some embodiments, the same reportQuantity is reported for each powerControlOffset value (e.g., cri-RI-PMI-CQI, cri-RI-CQI). The UE may concatenate reportQuantity values ​​in the CSI report. The concatenation of reportQuantity values ​​may be ordered so that the network node can identify which value corresponds to which powerControlOffset value. For example, for a reportQuantity of cri-RI-PMI-CQI, in some embodiments, the report may concatenate the CSI-RS resource indicator (CRI), RI, PMI, and CQI for each power offset (e.g., CRI1, RI1, PMI1, CQI1, CRI2, RI2, PMI2, CQI2, where 1 indicates a first control power offset and 2 indicates a second power control offset). In some implementations, the same reportQuantity may be concatenated together (eg, cri1, cri2, RI1, RI2, PMI1, PMI2, CQI1, CQI2, where 1 indicates a first control power offset and 2 indicates a second power control offset).

[0049] In some embodiments, one or more measurements may be reported collectively for all powerControlOffset values ​​in a CSI report, while the remaining measurements may be reported individually for each powerControlOffset value. By reporting some measurements collectively, CSI reporting overhead may be reduced. Examples of CSI report content including collectively reported measurements are provided below. However, these are just a few examples, and other possibilities are possible. Which measurements are reported collectively and which are reported individually may be predefined in the specification or configured by the network node. In some embodiments, the measurements to be reported collectively may be based on a configured offset.

[0050] For example, for reportQuantity of cri-RI-PMI-CQI, in some embodiments, CRI, RI, and PMI may be reported jointly for all powerControlOffset values, while CQI may be reported separately for each powerControlOffset value. In some embodiments, for reportQuantity of cri-RI-CQI, CRI may be reported jointly for all powerControlOffset values, while RI and CQI may be reported separately for each powerControlOffset value. For different power levels, RI and CQI may vary based on the powerControlOffset value.

[0051] In some embodiments, RI may be reported separately for each powerControlOffset value, and PMI may be reported collectively for all powerControlOffset values. However, the actual precoder matrix for each powerControlOffset value may be determined based on the reported PMI and the corresponding RI(r), where only the first r precoding vectors of the reported PMI are valid. For example, for r=4, the first four precoding vectors of the reported PMI may be used even when there are additional precoding vectors for the reported PMI. The optimal precoding vector is generally the same for different powerControlOffset values. For smaller powerControlOffsets, it may be better to use a smaller rank. The bit width of the PMI may be determined based on the maximum RI among all powerControlOffset values.

[0052] In some embodiments, a single CSI-reportConfig may be linked to multiple CSI-RS resource sets. Each CSI-RS resource set may include at least CSI-RS resources with different settings for powerControlOffsetSS and optionally different settings for powerControlOffset. powerControlOffsetSS is the offset of the CSI-RS transmit power relative to the SS / PBCH block transmit power.

[0053] Using multiple CSI-RS resource sets allows network nodes to have different transmit powers for CSI-RS resources. This can be useful if the UE needs to estimate CSI for different PDSCH transmit powers for different CSI-RS transmit powers, especially if the dynamic range of PDSCH transmit power is large. For example, if the network node were to use low-power CSI-RS to estimate high-power PDSCH transmissions, the CSI might not be accurate. Therefore, using different powerControlOffsetSS allows greater flexibility to handle such scenarios.

[0054] The CSI-RS resource set configuration may facilitate different settings for powerControlOffsetSS and preferably different settings for powerControlOffset. CSI-RS resources in different CSI-RS resource sets may have different values ​​for powerControlOffsetSS, which reflects the different transmit powers for the CSI-RS resources. Each CSI-RS resource may include one or more powerControlOffset values ​​used by the UE for CSI measurement and reporting.

[0055] This means that one CSI-RS resource can be used for CSI reporting for multiple PDSCH transmit power levels, and the number of CSI-RS resources can be less than the number of PDSCH transmit power levels to be reported. For example, a CSI report can be configured for four levels of transmit power. Two CSI-RS resources can be configured with different powerControlOffsetSS values. Within each CSI-RS resource, two powerControlOffset values ​​can be configured. In this example, the number of CSI-RS resources would be two, while the number of PDSCH transmit power levels to be reported would be four, because each CSI-RS resource includes two powerControlOffset values.

[0056] Each CSI-RS resource can be independently configured. This means that each CSI-RS resource can have different time and / or frequency resources, different time periodicity, etc. Implementations with multiple CSI-RS resource sets may require adjustments to certain restrictions. For example, this approach may require lifting the current restriction of only one CSI-RS resource set for periodic and semi-persistent CSI reporting. In some implementations, an existing CSI-ReportConfig can be reused. The UE can perform CSI measurement and reporting for one or more CSI-RS resource sets based on configuration or signaling instructions.

[0057] For implementations that include multiple CSI-RS resource sets, several options may be implemented for the UE to determine the CSI-RS resource sets for which to report CSI. In some implementations, the UE may determine the resources for which to report CSI based on the RRC configuration. In some implementations, the UE reports CSI for all configured CSI-RS resource sets.

[0058] In some embodiments, the UE reports CSI for only one of multiple configured CSI-RS resource sets. For example, unless otherwise instructed, the UE may report CSI for the first configured CSI-RS resource set or the last configured CSI-RS resource set. If another value other than the default value (e.g., the first value or the last value) is required, the network node may indicate the configured CSI-RS resource set for which the UE is to report CSI. The configured CSI-RS resource set for which the UE is to report CSI may apply to periodic CSI reporting or may be applied by default to other types of CSI reporting.

[0059] In some embodiments, the CSI-RS resource sets for which the UE is to report CSI are indicated in a MAC CE. A network node may use a MAC CE to indicate to the UE the CSI-RS resource sets for which CSI is to be reported. In some embodiments, a bitmap may be used to indicate the required CSI-RS resource sets. For example, a MAC CE may include a bitmap where each bit indicates whether the CSI-RS resource set corresponding to that bit is activated for CSI reporting.

[0060] For example, the network may configure a bitmap and inform the UE which bits in the bitmap correspond to which CSI-RS resource sets. Based on these relationships, the network node may transmit a bitmap to the UE to indicate the CSI-RS resource sets for which the UE is to report CSI. For example, the network node may set one or more bits in the bitmap to 1 to indicate that the UE should report CSI for the CSI-RS resource sets corresponding to those bits. The network node may transmit the bitmap to the UE via a MAC CE. When the UE receives the bitmap, it may determine which CSI-RS resource sets correspond to the bits set to 1 in the bitmap. The UE may report the power control offset for the corresponding CSI-RS resource set to the network node. In some embodiments, the length of the bitmap may be equal to the number of configured CSI-RS resource sets.

[0061] In some implementations, the length of the bitmap may be equal to the maximum number of configured CSI-RS resource sets across the CSI reporting configuration. Figure 7The MAC CE field is illustrated, where a first CSI reporting configuration 702 corresponds to a first bitmap 704, and a second CSI reporting configuration 706 corresponds to a second bitmap 708. The length of the first bitmap 704 and the second bitmap 708 may be equal to the maximum number of configured CSI-RS resource sets across the CSI reporting configurations (e.g., the first CSI reporting configuration 702 and the second CSI reporting configuration 706).

[0062] In some embodiments, a configuration table may be configured for CSI reporting, where each index in the table points to a list of CSI-RS resource sets. In this manner, each index in the table may be used by a network node to indicate one or more CSI-RS resource sets. In some embodiments, a bitmap may be used for each entry in the configuration table, where each bit in the bitmap corresponds to a CSI-RS resource set. An index from the table may be included in a MAC CE to indicate to the UE the corresponding list of CSI-RS resource sets for which the UE is to report CSI.

[0063] In some embodiments, an index may be associated with each CSI-RS resource set, and the network node uses one or more indices to indicate the CSI-RS resource set for which the UE is to report CSI. The index may be an existing nzp-CSI-ResourceSetId or may be defined separately.

[0064] For semi-persistent CSI reporting on the Physical Uplink Control Channel (PUCCH), a bitmap, one or more indexes may be added as new fields in the existing semi-persistent CSI reporting on the PUCCH activation / deactivation MAC CE.

[0065] In some embodiments, the UE may determine the CSI-RS resource set for which to report CSI based on a dynamic indication in the DCI for aperiodic CSI reporting or semi-persistent CSI reporting on the PUSCH. Both aperiodic CSI reporting and semi-persistent CSI reporting on the PUSCH are triggered by DCI, and the corresponding indication may be carried in the triggering DCI. In some embodiments, the indication in the DCI may be a bitmap, where each bit corresponds to one or more CSI-RS resource sets. In some embodiments, the indication in the DCI may be an index into a table, where the index corresponds to one or more CSI-RS resource sets. In some embodiments, the indication in the DCI may be one or more indices, where each index corresponds to a CSI-RS resource set, as previously discussed. In this case, a single index may be used to save DCI overhead.

[0066] Because overhead is an important consideration for DCI, some information may be omitted in some embodiments. For example, to save DCI overhead, reportConfigId may be omitted. When reportConfigId is omitted, there may be only one CSI-ReportConfig with multiple configured CSI-RS resource sets in the triggered CSI report. If there is only one CSI-RS resource set, then CSI-ResourceConfigId may not be needed. In some embodiments, the network may indicate one or more CSI-RS resource sets and also indicate a set of powerControlOffset values ​​for each CSI-RS resource within the CSI-RS resource set (as previously discussed), with the CSI-RS resource set having multiple powerControlOffset values ​​for the UE to report CSI.

[0067] The content of the CSI report transmitted from the UE to the network node may include information from the CSI-RS measurement. In some embodiments, the same reportQuantity is reported separately for each CSI-RS resource set value (e.g., cri-RI-PMI-CQI, cri-RI-CQI). The UE may concatenate reportQuantity values ​​in the CSI report. The concatenation of reportQuantity values ​​may be ordered so that the network node can identify which value corresponds to which CSI-RS resource set. For example, for a reportQuantity of cri-RI-PMI-CQI, in some embodiments, the report may concatenate the CRI, RI, PMI, and CQI for each power offset (e.g., CRI1, RI1, PMI1, CQI1, CRI2, RI2, PMI2, CQI2, where 1 indicates the first CSI-RS resource set and 2 indicates the second p=CSI-RS resource set). In some implementations, the same reportQuantity may be concatenated together (e.g., CRI1, CRI2, RI1, RI2, PMI1, PMI2, CQI1, CQI2, where 1 indicates the first CSI-RS resource set and 2 indicates the second CSI-RS resource set).

[0068] In some implementations, one or more measurements may be reported jointly for all CSI-RS resource sets, while the remaining measurements may be reported individually for each CSI-RS resource set. By reporting some measurements jointly, CSI reporting overhead may be reduced. Examples of CSI report content including jointly reported measurements are provided below. However, these are just a few examples, and other possibilities are possible. Which measurements are reported jointly and which are reported individually may be predefined in the specification or configured by the network node.

[0069] For example, for reportQuantity of cri-RI-PMI-CQI, in some embodiments, CRI, RI, and PMI may be reported jointly for all CSI-RS resource sets, while CQI may be reported separately for each CSI-RS resource set. In some embodiments, for reportQuantity of cri-RI-CQI, CRI may be reported jointly for all CSI-RS resource sets, while RI and CQI may be reported separately for each CSI-RS resource set.

[0070] In some implementations, the RI may be reported separately for each CSI-RS resource set value, and the PMI may be reported collectively for all CSI-RS resource sets. However, the actual precoder matrix for each CSI-RS resource set may be determined based on the reported PMI and the corresponding RI(r), where only the first r precoding vectors for the reported PMI are valid. The optimal precoding vector may be the same for different transmit powers for CSI-RS and / or PDSCH. However, using different ranks may be preferable. The bit width of the PMI may be determined based on the maximum RI across all CSI-RS resource sets.

[0071] Figure 8 A flow chart illustrating a method 800 for a network node according to an embodiment of the present invention is provided. The method 800 includes encoding (802) a CSI report configuration information element and corresponding CSI-RS resource and resource set information elements, wherein these information elements include at least one of a list of power control offsets for CSI-RS resources and a list of CSI-RS resource sets with different transmit powers; transmitting (804) these information elements to a UE; transmitting (806) a CSI-RS using one or more CSI-RS resources; receiving (808) a CSI report with CSI measurements corresponding to one or more of the power control offsets or one or more of the CSI-RS resource sets; and dynamically adapting (810) a power domain of a PDSCH based on the CSI report.

[0072] In some embodiments of the method 800, the CSI report configuration information element is linked to the CSI-RS resource using a set of powerControlOffset values ​​indicating a power offset of PDSCH RE to CSI-RS RE.

[0073] In some embodiments, method 800 further includes transmitting an RRC configuration to the UE to indicate a power control offset for which the UE should report CSI measurements.

[0074] In some embodiments, the method 800 further includes transmitting a MAC CE including a bitmap indicating power control offsets for which the UE should report CSI measurements.

[0075] In some embodiments, method 800 further includes transmitting a MAC CE including an index indicating one or more power control offsets for which the UE should report CSI measurements.

[0076] In some embodiments, method 800 further includes transmitting a MAC CE including one or more indices, where each index indicates a power control offset for which the UE should report CSI measurements.

[0077] In some embodiments, method 800 further includes transmitting a DCI to the UE to indicate a power control offset for which the UE should report CSI measurements.

[0078] In some embodiments, method 800 further includes updating a power control offset using a MAC CE.

[0079] In some implementations of method 800, the CSI report includes measurements for each of the power control offsets separately in the CSI report, wherein the measurements are concatenated in the CSI report.

[0080] In some implementations of the method 800, one or more CSI measurements are reported collectively for all of the power control offsets, while the remaining CSI measurements are reported individually for each of the power control offsets.

[0081] In some embodiments of method 800, the CSI report configuration information element is linked to a plurality of CSI-RS resource sets, each of the plurality of CSI-RS resource sets including a CSI-RS resource having a different setting for a powerControlOffsetSS field reflecting a different transmit power for the CSI-RS resource.

[0082] Figure 9A flow chart illustrating a method 900 for a UE according to an embodiment of the present invention is illustrated. The method 900 includes receiving and decoding (902) a CSI report configuration information element and a corresponding CSI-RS resource and resource set information element, wherein the information elements include at least one of a list of power control offsets for CSI-RS resources and a list of CSI-RS resource sets with different transmit powers. The method 900 also includes measuring (904) a CSI-RS using one or more of the CSI-RS resources based on the CSI report configuration information element, and sending (906) a CSI report with CSI measurements corresponding to one or more of the power control offsets or one or more of the CSI-RS resource sets to a network node.

[0083] In some embodiments of the method 900 , the CSI report configuration information element is linked to the CSI-RS resource using a set of powerControlOffset values ​​indicating a power offset of PDSCH RE to CSI-RS RE.

[0084] In some embodiments, method 900 further includes receiving an RRC configuration to the UE to indicate a power control offset for which the UE should report CSI measurements.

[0085] In some embodiments, method 900 further includes receiving a MAC CE including a bitmap indicating power control offsets for which the UE should report CSI measurements.

[0086] In some embodiments, method 900 further includes receiving a MAC CE including an index indicating one or more power control offsets for which the UE should report CSI measurements.

[0087] In some embodiments, method 900 further includes receiving a MAC CE comprising one or more indices, wherein each index indicates a power control offset for which the UE should report CSI measurements.

[0088] In some embodiments, method 900 further includes receiving a DCI to a UE to indicate a power control offset for which the UE should report CSI measurements.

[0089] In some embodiments, method 900 further includes receiving a MAC CE configured to update a power control offset.

[0090] In some implementations of method 900, the CSI report includes measurements for each of the power control offsets separately in the CSI report, wherein the measurements are concatenated in the CSI report.

[0091] In some implementations of the method 900, one or more CSI measurements are reported collectively for all of the power control offsets, while the remaining CSI measurements are reported individually for each of the power control offsets.

[0092] In some embodiments of method 900, the CSI report configuration information element is linked to multiple CSI-RS resource sets, each of the multiple CSI-RS resource sets including a CSI-RS resource having a different setting for the powerControlOffsetSS field, the powerControlOffsetSS field reflecting a different transmit power for the CSI-RS resource.

[0093] In some implementations, multiple CSI report configurations may be used to support multiple PDSCH transmit powers.The CSI-RS resources in multiple CSI-reportConfigs may have different settings for powerControlOffset and / or powerControlOffsetSS.

[0094] The CSI-RS resources of multiple CSI-reportConfigs can refer to the same physical CSI-RS signal, even though the powerControlOffset values ​​may be different. This will configure the UE to perform measurements on the same CSI-RS resource for multiple powerControlOffset values. The resulting CSI reports will provide feedback to the network about the resources at those different power control offset values, and the network node will be able to adjust the resources for future scheduling based on this feedback.

[0095] These multiple CSI-reportConfigs can be linked to different CSI-RS resources, where they can have different transmit powers (i.e., different powerControlOffsetSS). Different transmit powers of CSI-RS may be beneficial for UE to estimate CSI for different PDSCH transmit powers, especially if the dynamic range of PDSCH transmit power is large.

[0096] In some implementations, existing IEs can be reused. For example, existing NZP-CSI-RS-Resource can be reused. Furthermore, in some implementations, existing CSI-ReportConfig can be reused. In this case, each CSI-ReportConfig can be independently configured and independently triggered using traditional triggering mechanisms.

[0097] In some embodiments, multiple CSI-reportConfig information elements may be configured as a group. In addition, certain constraints and restrictions may exist in configuration, triggering, and reporting. For example, multiple CSI-reportConfig information elements may have the same reportQuantity, reportFreqConfiguration, timeRestrictionForChannelMeasurements, timeRestrictionForInterferenceMeasurements, cqi-Table, and / or subbandSize. Another example of a restriction may be that the CSI resource sets corresponding to multiple CSI-reportConfig information elements have the same values ​​for some parameters (e.g., periodicity, number of ports, CSI-RS-ResourceMapping, and / or CSI-FrequencyOccupation).

[0098] In some implementations, when multiple of these CSI-ReportConfigs are reported simultaneously, the content of the CSI report can be reduced to optimize the reporting process. Some measurements can be reported jointly for multiple CSI-reportConfigs, while the remaining measurements can be reported separately for each CSI-reportConfig. This can reduce CSI reporting overhead.

[0099] For example, for the reportQuantity of cri-RI-PMI-CQI, CRI, RI, and PMI may be reported jointly for multiple CSI-reportConfigs, while CQI may be reported separately for each CSI-reportConfig. As another example, for the reportQuantity of cri-RI-CQI, CRI may be reported jointly for multiple CSI-reportConfigs, while RI and CQI may be reported separately for each CSI-reportConfig. As yet another example, RI may be reported separately for each CSI-reportConfig, and PMI may be reported jointly for these multiple CSIreportConfigs. However, the actual precoder matrix for each CSI-reportConfig may be determined based on the reported PMI and the corresponding RI(r), where only the first r precoding vectors of the reported PMI are valid. These are just a few examples, and there are many other possibilities. Which measurements are reported jointly and which measurements are reported separately may be predefined in the specification or configured by the network node.

[0100] Figure 10 A flow chart of a method 1000 for a network node according to an embodiment of the present invention is illustrated. The method 1000 includes encoding a first CSI reporting configuration IE including at least a CSI-RS resource, a first powerControlOffset value for the CSI-RS resource, and a first powerControlOffsetSS value for the CSI-RS resource (1002). The illustrated method 1000 also includes encoding a second CSI reporting configuration IE including at least a second CSI-RS resource (1004), wherein the second CSI reporting configuration IE includes a second powerControlOffset value for the CSI-RS resource and a second powerControlOffsetSS value for the CSI-RS resource, wherein one or both of the first powerControlOffset value and the first powerControlOffsetSS value are different from the second powerControlOffset value and the second powerControlOffsetSS value, respectively. The illustrated method 1000 also includes sending (1006) a first CSI report configuration IE and a second CSI report configuration IE to the UE; sending (1008) a CSI-RS using a CSI-RS resource; receiving (1010) a CSI report with a CSI measurement; and dynamically adapting (1012) a power domain of a PDSCH based on the CSI report.

[0101] In some implementations of method 1000, the first CSI reporting configuration IE and the second CSI reporting configuration IE have equal values ​​for some parameters. In some implementations, the first CSI reporting configuration IE and the second CSI reporting configuration IE have one or more of the same reportQuantity, the same reportFreqConfiguration, the same timeRestrictionForChannelMeasurements, the same timeRestrictionForInterferenceMeasurements, the same cqi-Table, and the same subbandSize.

[0102] In some implementations of method 1000, the CSI resource sets corresponding to the first CSI reporting configuration IE and the second CSI reporting configuration IE include equal values ​​for some parameters. In some implementations, the CSI resource sets corresponding to the first CSI reporting configuration IE and the second CSI reporting configuration IE have one or more of the same periodicity, the same number of ports, the same CSI-RS-ResourceMapping, and the same CSI-FrequencyOccupation.

[0103] In some embodiments of method 1000, when CSI reports for a first reporting configuration and a second reporting configuration are sent simultaneously, some of the CSI measurements are reported jointly for the first CSI reporting configuration IE and the second CSI reporting configuration IE, while the remaining measurements are reported separately for each of the first CSI reporting configuration IE and the second CSI reporting configuration IE. Some such embodiments further include configuring which CSI measurements are reported jointly and which CSI measurements are reported separately. In some such embodiments, CRI, PMI, and RI are reported jointly for the first CSI reporting configuration IE and the second CSI reporting configuration IE, and CQI is reported separately for the first CSI reporting configuration IE and the second CSI reporting configuration IE.

[0104] In some implementations of method 1000 , CRI is reported jointly for the first CSI reporting configuration IE and the second CSI reporting configuration IE, and wherein CQI and RI are reported separately for the first CSI reporting configuration IE and the second CSI reporting configuration IE.

[0105] In some implementations of method 1000 , PMI is reported jointly for the first CSI reporting configuration IE and the second CSI reporting configuration IE, and wherein RI is reported separately for the first CSI reporting configuration IE and the second CSI reporting configuration IE.

[0106] In some embodiments, method 1000 further includes encoding and transmitting an additional CSI reporting configuration IE including a CSI-RS resource, an additional powerControlOffset value for the CSI-RS resource, and an additional powerControlOffsetSS value for the CSI-RS resource.

[0107] Embodiments contemplated herein include an apparatus comprising means for performing one or more elements of methods 800 and 1000. The apparatus may be, for example, a base station, such as network device 1318 (base station), as described herein.

[0108] Embodiments contemplated herein include one or more non-transitory computer-readable media including instructions that, when executed by one or more processors of an electronic device, cause the electronic device to perform one or more elements of method 800 and method 1000. The non-transitory computer-readable medium may be, for example, a memory of a base station (such as memory 1322 of network device 1318 (base station), as described herein).

[0109] Embodiments contemplated herein include an apparatus comprising logic, modules, or circuits operable to perform one or more elements of methods 800 and 1000. The apparatus may be, for example, a base station, such as network device 1318 (base station), as described herein.

[0110] Embodiments contemplated herein include an apparatus comprising: one or more processors; and one or more computer-readable media comprising instructions that, when executed by the one or more processors, cause the one or more processors to perform one or more elements of method 800 and method 1000. The apparatus may be, for example, a base station, such as network device 1318 (base station), as described herein.

[0111] Embodiments contemplated herein include a signal as described in or associated with one or more elements of method 800 and method 1000 .

[0112] The embodiments contemplated herein include a computer program or computer program product comprising instructions, wherein execution of the program by a processing element causes the processing element to perform one or more elements of method 800 and method 1000. The processor may be a processor of a base station (such as processor 1320 of network device 1318 (base station), as described herein). These instructions may be located, for example, in the processor and / or in a memory of the base station (such as memory 1322 of network device 1318 (base station), as described herein).

[0113] Figure 11 A flowchart of a method 1100 for a UE according to an embodiment of the present invention is illustrated. The method 1100 includes receiving and decoding (1102) a first CSI reporting configuration IE including a CSI-RS resource, a first powerControlOffset value for the CSI-RS resource, and a first powerControlOffsetSS value for the CSI-RS resource, and receiving and decoding (1104) a second CSI reporting configuration IE including a second CSI-RS resource, wherein the second CSI reporting configuration IE includes a second powerControlOffset value for the CSI-RS resource and a second powerControlOffsetSS value for the CSI-RS resource, wherein one or both of the first powerControlOffset value and the first powerControlOffsetSS value are different from the second powerControlOffset value and the second powerControlOffsetSS value, respectively. The method 1100 also includes measuring (1106) the CSI-RS using the CSI-RS resource, and transmitting (1108) a CSI report with the CSI measurement to a network node.

[0114] In some implementations of method 1100, the first CSI reporting configuration IE and the second CSI reporting configuration IE have one or more of the same reportQuantity, the same reportFreqConfiguration, the same timeRestrictionForChannelMeasurements, the same timeRestrictionForInterferenceMeasurements, the same cqi-Table, and the same subbandSize.

[0115] In some implementations of method 1100 , the CSI resource sets corresponding to the first CSI reporting configuration IE and the second CSI reporting configuration IE include equal values ​​for some parameters.

[0116] In some embodiments of method 1100, when CSI reports for a first reporting configuration and a second reporting configuration are sent simultaneously, some of the CSI measurements are reported jointly for the first CSI reporting configuration IE and the second CSI reporting configuration IE, while the remaining measurements are reported separately for each of the first CSI reporting configuration IE and the second CSI reporting configuration IE. Some such embodiments further include determining which CSI measurements to report jointly and which CSI measurements to report separately. In some such embodiments, CRI, PMI, and RI are reported jointly for the first CSI reporting configuration IE and the second CSI reporting configuration IE, and CQI is reported separately for the first CSI reporting configuration IE and the second CSI reporting configuration IE.

[0117] In some implementations of method 1100 , CRI is reported jointly for the first CSI reporting configuration IE and the second CSI reporting configuration IE, and wherein CQI and RI are reported separately for the first CSI reporting configuration IE and the second CSI reporting configuration IE.

[0118] In some implementations of method 1100 , PMI is reported jointly for the first CSI reporting configuration IE and the second CSI reporting configuration IE, and wherein RI is reported separately for the first CSI reporting configuration IE and the second CSI reporting configuration IE.

[0119] In some embodiments, method 1100 further includes receiving and decoding an additional CSI reporting configuration IE, the additional CSI reporting configuration IE including a CSI-RS resource, an additional powerControlOffset value for the CSI-RS resource, and an additional powerControlOffsetSS value for the CSI-RS resource.

[0120]

[0086] Embodiments contemplated herein include an apparatus comprising means for performing one or more elements of methods 900 and 1100. The apparatus may be, for example, an apparatus of a UE, such as wireless device 1302 (UE), as described herein.

[0121] Embodiments contemplated herein include one or more non-transitory computer-readable media including instructions that, when executed by one or more processors of an electronic device, cause the electronic device to perform one or more elements of methods 900 and 1100. The non-transitory computer-readable medium may be, for example, a memory of a UE (such as memory 1306 of wireless device 1302 (UE), as described herein).

[0122] Embodiments contemplated herein include an apparatus comprising logical components, modules, or circuits for performing one or more elements of methods 900 and 1100. The apparatus may be, for example, a UE, such as wireless device 1302 (UE), as described herein.

[0123] Embodiments contemplated herein include an apparatus comprising: one or more processors; and one or more computer-readable media comprising instructions that, when executed by the one or more processors, cause the one or more processors to perform one or more elements of methods 900 and 1100. The apparatus may be, for example, a UE, such as wireless device 1302 (UE), as described herein.

[0124] Embodiments contemplated herein include a signal as described in or associated with one or more elements of method 900 and method 1100 .

[0125] The embodiments contemplated herein include a computer program or computer program product comprising instructions, wherein execution of the program by a processor causes the processor to perform one or more elements of methods 900 and 1100. The processor may be a processor of a UE (such as processor 1304 of wireless device 1302 (UE), as described herein). These instructions may be located, for example, in the processor and / or in a memory of the UE (such as memory 1306 of wireless device 1302 (UE), as described herein).

[0126] Figure 12 An example architecture of a wireless communication system 1200 according to the embodiments disclosed herein is illustrated. The following description is provided for an example wireless communication system 1200 operating in conjunction with the LTE system standard and / or the 5G or NR system standard provided by the 3GPP technical specifications.

[0127] like Figure 12 As shown, wireless communication system 1200 includes UE 1202 and UE 1204 (although any number of UEs may be used). In this example, UE 1202 and UE 1204 are illustrated as smartphones (e.g., handheld touchscreen mobile computing devices capable of connecting to one or more cellular networks), but may include any mobile or non-mobile computing device configured for wireless communication.

[0128] UE 1202 and UE 1204 may be configured to be communicatively coupled to RAN 1206. In an embodiment, RAN 1206 may be an NG-RAN, E-UTRAN, or the like. UE 1202 and UE 1204 utilize connections (or channels) (shown as connection 1208 and connection 1210, respectively) with RAN 1206, where each connection (or channel) includes a physical communication interface. RAN 1206 may include one or more base stations (such as base station 1212 and base station 1214) that implement connection 1208 and connection 1210.

[0129] In this example, connection 1208 and connection 1210 are the air interfaces that enable such communicative coupling and may conform to the RAT used by RAN 1206, such as, for example, LTE and / or NR.

[0130] In some embodiments, UE 1202 and UE 1204 may also directly exchange communication data via side link interface 1216. UE 1204 is shown as being configured to access an access point (shown as AP 1218) via connection 1220. For example, connection 1220 may include a local wireless connection, such as a connection compliant with any IEEE 802.11 protocol, wherein AP 1218 may include a Wi-Fi ® In this example, AP 1218 may not be connected to another network (eg, the Internet) through CN 1224.

[0131] In an embodiment, UE 1202 and UE 1204 may be configured to communicate with each other or with base station 1212 and / or base station 1214 over a multi-carrier communication channel using orthogonal frequency division multiplexing (OFDM) communication signals according to various communication techniques, such as, but not limited to, orthogonal frequency division multiple access (OFDMA) communication techniques (e.g., for downlink communication) or single-carrier frequency division multiple access (SC-FDMA) communication techniques (e.g., for uplink and ProSe or sidelink communication), although the scope of the embodiments is not limited in this respect. An OFDM signal may include multiple orthogonal subcarriers.

[0132] In some embodiments, all or part of base station 1212 or base station 1214 may be implemented as one or more software entities running on a server computer as part of a virtual network. Additionally, or in other embodiments, base station 1212 or base station 1214 may be configured to communicate with each other via interface 1222. In embodiments where wireless communication system 1200 is an LTE system (e.g., when CN 1224 is an EPC), interface 1222 may be an X2 interface. This X2 interface may be defined between two or more base stations (e.g., two or more eNBs, etc.) connected to an EPC and / or between two eNBs connected to an EPC. In embodiments where wireless communication system 1200 is an NR system (e.g., when CN 1224 is a 5GC), interface 1222 may be an Xn interface. This Xn interface may be defined between two or more base stations (e.g., two or more gNBs, etc.) connected to a 5GC, between base station 1212 (e.g., a gNB) and an eNB connected to a 5GC, and / or between two eNBs connected to a 5GC (e.g., CN 1224).

[0133] The RAN 1206 is shown as being communicatively coupled to the CN 1224. The CN 1224 may include one or more network elements 1226 configured to provide various data and telecommunication services to customers / subscribers (e.g., UE 1202 and users of UE 1204) connected to the CN 1224 via the RAN 1206. The components of the CN 1224 may be implemented in one physical device or separate physical devices that include components for reading and executing instructions from a machine-readable or computer-readable medium (e.g., a non-transitory machine-readable storage medium).

[0134] In an embodiment, CN 1224 may be an EPC, and RAN 1206 may be connected to CN 1224 via an S1 interface 1228. In an embodiment, S1 interface 1228 may be divided into two parts: an S1 user plane (S1-U) interface, which carries traffic data between base station 1212 or base station 1214 and a serving gateway (S-GW); and an S1-MME interface, which is a signaling interface between base station 1212 or base station 1214 and a mobility management entity (MME).

[0135] In an embodiment, CN 1224 may be a 5GC, and RAN 1206 may be connected to CN 1224 via an NG interface 1228. In an embodiment, NG interface 1228 may be divided into two parts: an NG user plane (NG-U) interface, which carries traffic data between base station 1212 or base station 1214 and a user plane function (UPF); and an S1 control plane (NG-C) interface, which is a signaling interface between base station 1212 or base station 1214 and an access and mobility management function (AMF).

[0136] Generally speaking, the application server 1230 may be a component that provides applications (e.g., packet-switched data services) that utilize Internet Protocol (IP) bearer resources with the CN 1224. The application server 1230 may also be configured to support one or more communication services (e.g., VoIP sessions, group communication sessions, etc.) for the UE 1202 and UE 1204 via the CN 1224. The application server 1230 may communicate with the CN 1224 via an IP communication interface 1232.

[0137] Figure 13 A system 1300 is illustrated for performing signaling 1334 between a wireless device 1302 and a network device 1318 according to embodiments disclosed herein. System 1300 can be part of a wireless communication system as described herein. Wireless device 1302 can be, for example, a UE of the wireless communication system. Network device 1318 can be, for example, a base station (e.g., an eNB or gNB) of the wireless communication system.

[0138] The wireless device 1302 may include one or more processors 1304. The processor 1304 may execute instructions to perform various operations for the wireless device 1302, as described herein. The processor 1304 may include one or more baseband processors implemented using, for example, a central processing unit (CPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a controller, a field programmable gate array (FPGA) device, another hardware device, a firmware device, or any combination thereof, configured to perform the operations described herein.

[0139] The wireless device 1302 may include a memory 1306. The memory 1306 may be a non-transitory computer-readable storage medium that stores instructions 1308, which may include, for example, instructions to be executed by the processor 1304. The instructions 1308 may also be referred to as program code or a computer program. The memory 1306 may also store data used by the processor 1304 and results computed by the processor.

[0140] The wireless device 1302 may include one or more transceivers 1310, which may include radio frequency (RF) transmitter and / or receiver circuitry that uses an antenna 1312 of the wireless device 1302 to facilitate signaling (e.g., signaling 1334) to and / or from the wireless device 1302 and other devices (e.g., network device 1318) in accordance with a corresponding RAT.

[0141] Wireless device 1302 may include one or more antennas 1312 (e.g., one, two, four, or more). For implementations with multiple antennas 1312, wireless device 1302 may leverage the spatial diversity of such multiple antennas 1312 to transmit and / or receive multiple different data streams over the same time-frequency resources. This behavior may be referred to as, for example, multiple-input, multiple-output (MIMO) behavior (referring to the multiple antennas used at each of the transmitting and receiving devices to implement this aspect). MIMO transmissions by wireless device 1302 may be implemented based on precoding (or digital beamforming) applied to wireless device 1302, which multiplexes the data streams across antennas 1312 based on known or assumed channel characteristics, such that each data stream is received at an appropriate signal strength relative to the other streams and at a desired location in the spatial domain (e.g., the location of the receiver associated with that data stream). Certain embodiments may use single-user MIMO (SU-MIMO) methods (where data streams are all directed to a single receiver) and / or multi-user MIMO (MU-MIMO) methods (where separate data streams may be directed to separate (different) receivers in different locations in the spatial domain).

[0142] In certain embodiments with multiple antennas, the wireless device 1302 may implement analog beamforming techniques whereby the phases of the signals transmitted by the antennas 1312 are adjusted relative to each other so that the (joint) transmissions of the antennas 1312 can be steered (this is sometimes referred to as beam steering).

[0143] The wireless device 1302 may include one or more interfaces 1314. The interfaces 1314 may be used to provide input to or output from the wireless device 1302. For example, the wireless device 1302 (UE) may include interfaces 1314, such as a microphone, a speaker, a touch screen, and buttons, to allow a user of the UE to provide input to and / or output to the UE. Other interfaces of such a UE may consist of transmitters, receivers, and other circuitry (e.g., in addition to the transceiver 1310 / antenna 1312 already described) that allow the UE to communicate with other devices, and may be based on known protocols (e.g., Wi-Fi). ® and Bluetooth ® etc.) to perform the operation.

[0144] The wireless device 1302 may include a CSI module 1316. The CSI module 1316 may be implemented via hardware, software, or a combination thereof. For example, the CSI module 1316 may be implemented as a processor, circuitry, and / or instructions 1308 stored in the memory 1306 and executed by the processor 1304. In some examples, the CSI module 1316 may be integrated within the processor 1304 and / or the transceiver 1310. For example, the CSI module 1316 may be implemented via a combination of software components (e.g., software components executed by a DSP or general-purpose processor) and hardware components (e.g., logic gates and circuits) within the processor 1304 or the transceiver 1310.

[0145] The CSI module 1316 may be used in various aspects of the present disclosure, such as Figures 3 to 7 、 Figure 9 and Figure 11 The CSI module 1316 is configured to receive and decode the CSI report configuration IE and measure and report CSI according to the CSI report configuration IE.

[0146] The network device 1318 may include one or more processors 1320. The processor 1320 may execute instructions to perform various operations for the network device 1318, as described herein. The processor 1320 may include one or more baseband processors implemented using, for example, a CPU, a DSP, an ASIC, a controller, an FPGA device, another hardware device, a firmware device, or any combination thereof configured to perform the operations described herein.

[0147] Network device 1318 may include memory 1322. Memory 1322 may be a non-transitory computer-readable storage medium that stores instructions 1324 (which may include, for example, instructions to be executed by processor 1320). Instructions 1324 may also be referred to as program code or a computer program. Memory 1322 may also store data used by processor 1320 and results computed by the processor.

[0148] The network device 1318 may include one or more transceivers 1326, which may include RF transmitter and / or receiver circuitry that uses an antenna 1328 of the network device 1318 to facilitate signaling (e.g., signaling 1334) to and / or from the network device 1318 and other devices (e.g., wireless device 1302) according to a corresponding RAT.

[0149] The network device 1318 may include one or more antennas 1328 (e.g., one, two, four, or more). In embodiments with multiple antennas 1328, the network device 1318 may perform MIMO, digital beamforming, analog beamforming, beam steering, etc., as described.

[0150] The network device 1318 may include one or more interfaces 1330. The interfaces 1330 may be used to provide input to or output from the network device 1318. For example, the network device 1318 (base station) may include an interface 1330 comprised of a transmitter, a receiver, and other circuitry (e.g., in addition to the transceiver 1326 / antenna 1328 already described) that enables the base station to communicate with other equipment in the core network and / or enables the base station to communicate with external networks, computers, databases, etc., for the purpose of operating, managing, and maintaining the base station or other equipment operatively connected to the base station.

[0151] The network device 1318 may include a CSI configuration module 1332. The CSI configuration module 1332 may be implemented via hardware, software, or a combination thereof. For example, the CSI configuration module 1332 may be implemented as a processor, circuitry, and / or instructions 1324 stored in the memory 1322 and executed by the processor 1320. In some examples, the CSI configuration module 1332 may be integrated within the processor 1320 and / or the transceiver 1326. For example, the CSI configuration module 1332 may be implemented via a combination of software components (e.g., executed by a DSP or general-purpose processor) and hardware components (e.g., logic gates and circuits) within the processor 1320 or the transceiver 1326.

[0152] The CSI configuration module 1332 may be used in various aspects of the present disclosure, such as Figures 3 to 8 and Figure 10 The CSI configuration module 1332 is configured to encode the CSI report configuration information element.

[0153] For one or more embodiments, at least one of the components described in one or more of the preceding figures may be configured to perform one or more operations, techniques, processes, and / or methods as described herein. For example, a baseband processor as described herein in conjunction with one or more of the preceding figures may be configured to operate according to one or more of the examples described herein. For another example, circuitry associated with a UE, base station, network element, etc., as described above in conjunction with one or more of the preceding figures, may be configured to operate according to one or more of the examples described herein.

[0154] Unless expressly stated otherwise, any of the above embodiments may be combined with any other embodiment (or combination of embodiments). The foregoing description of one or more specific implementations provides illustration and description, but is not intended to be exhaustive or to limit the scope of the embodiments to the precise forms disclosed. Modifications and variations are possible in light of the above teachings or may be acquired from practice of the various embodiments.

[0155] Embodiments and implementations of the systems and methods described herein may include various operations that may be embodied in machine-executable instructions to be executed by a computer system. A computer system may include one or more general-purpose or special-purpose computers (or other electronic devices). A computer system may include hardware components that include specific logic for performing the operations, or may include a combination of hardware, software, and / or firmware.

[0156] It should be appreciated that the systems described herein include descriptions of specific embodiments. These embodiments can be combined into a single system, partially combined into other systems, separated into multiple systems, or otherwise divided or combined. In addition, it is contemplated that parameters, attributes, aspects, etc. of one embodiment may be used in conjunction with another embodiment. For clarity, these parameters, attributes, aspects, etc. are described only in relation to one or more embodiments, and it should be appreciated that these parameters, attributes, aspects, etc. may be combined with or substituted for parameters, attributes, aspects, etc. of another embodiment unless expressly stated otherwise herein.

[0157] It is understood that the use of personally identifiable information should be subject to privacy policies and practices that are generally recognized to meet or exceed industry or government requirements for maintaining user privacy. Specifically, personally identifiable information data should be managed and processed to minimize the risk of unintentional or unauthorized access or use, and the nature of authorized use should be clearly stated to users.

[0158] Although the foregoing has been described in considerable detail for purposes of clarity, it will be apparent that certain changes and modifications may be made without departing from the principles of the invention. It should be noted that there are many alternative ways of implementing both the processes and the apparatus described herein. The embodiments of the present invention are therefore to be considered illustrative and not restrictive, and the description is not to be limited to the details given herein, but may be modified within the scope and equivalents of the appended claims.

Claims

1. A method for a network node, the method comprising: encoding a first channel state information (CSI) report configuration information element (IE), the first CSI report configuration IE including a first CSI-reference signal (RS) resource, a first powerControlOffset value for the first CSI-RS resource, and a first powerControlOffsetSS value for the first CSI-RS resource; encoding a second CSI reporting configuration IE including a second CSI-RS resource, wherein the second CSI reporting configuration IE includes a second powerControlOffset value for the second CSI-RS resource and a second powerControlOffsetSS value for the second CSI-RS resource, wherein one or both of the first powerControlOffset value and the first powerControlOffsetSS value are different from the second powerControlOffset value and the second powerControlOffsetSS value, respectively; Sending the first CSI reporting configuration IE and the second CSI reporting configuration IE to a user equipment (UE); Sending a CSI-RS using the first CSI-RS resource and the second CSI-RS resource; receiving a CSI report with a CSI measurement; and A power domain of a physical downlink shared channel (PDSCH) is dynamically adapted based on the CSI report.

2. The method according to claim 1, wherein the first CSI reporting configuration IE and the second CSI reporting configuration IE have one or more of the same reportQuantity, the same reportFreqConfiguration, the same timeRestrictionForChannelMeasurements, the same timeRestrictionForInterferenceMeasurements, the same cqi-Table, and the same subbandSize. 3 . The method according to claim 1 , wherein the CSI resource sets corresponding to the first CSI reporting configuration IE and the second CSI reporting configuration IE include equal values ​​for some parameters.

4. The method of claim 1 , wherein some of the CSI measurements are reported jointly for the first CSI reporting configuration IE and the second CSI reporting configuration IE, while the remaining measurements are reported separately for each of the first CSI reporting configuration IE and the second CSI reporting configuration IE. 5 . The method of claim 4 , further comprising configuring which of the CSI measurements are reported collectively and which of the CSI measurements are reported individually.

6. The method of claim 4, wherein a CSI-RS resource indicator (CRI), a precoding matrix indicator (PMI), and a rank indicator (RI) are jointly reported for the first CSI report configuration IE and the second CSI report configuration IE, and wherein channel quality information (CQI) is separately reported for the first CSI report configuration IE and the second CSI report configuration IE.

7. The method of claim 4, wherein a CSI-RS resource indicator (CRI) is reported jointly for the first CSI reporting configuration IE and the second CSI reporting configuration IE, and wherein a channel quality information (CQI) and a rank indicator (RI) are reported separately for the first CSI reporting configuration IE and the second CSI reporting configuration IE.

8. The method of claim 4, wherein a precoding matrix indicator (PMI) is reported jointly for the first CSI reporting configuration IE and the second CSI reporting configuration IE, and wherein a rank indicator (RI) is reported separately for the first CSI reporting configuration IE and the second CSI reporting configuration IE.

9. A method for a user equipment (UE), the method comprising: receiving and decoding a first channel state information (CSI) report configuration information element (IE), the first CSI report configuration IE including a first CSI-reference signal (RS) resource, a first powerControlOffset value for the first CSI-RS resource, and a first powerControlOffsetSS value for the first CSI-RS resource; receiving and decoding a second CSI reporting configuration IE including a second CSI-RS resource, wherein the second CSI reporting configuration IE includes a second powerControlOffset value for the second CSI-RS resource and a second powerControlOffsetSS value for the second CSI-RS resource, wherein one or both of the first powerControlOffset value and the first powerControlOffsetSS value are different from the second powerControlOffset value and the second powerControlOffsetSS value, respectively; measuring a CSI-RS using the first CSI-RS resource and the second CSI-RS resource; A CSI report with CSI measurements is transmitted to a network node.

10. The method according to claim 9, wherein the first CSI reporting configuration IE and the second CSI reporting configuration IE have one or more of the same reportQuantity, the same reportFreqConfiguration, the same timeRestrictionForChannelMeasurements, the same timeRestrictionForInterferenceMeasurements, the same cqi-Table, and the same subbandSize. 11 . The method according to claim 9 , wherein the CSI resource sets corresponding to the first CSI reporting configuration IE and the second CSI reporting configuration IE include equal values ​​for some parameters.

12. The method of claim 9, wherein some of the CSI measurements are reported jointly for the first CSI reporting configuration IE and the second CSI reporting configuration IE, while the remaining measurements are reported separately for each of the first CSI reporting configuration IE and the second CSI reporting configuration IE.

13. The method of claim 12, further comprising determining which of the CSI measurements are reported collectively and which of the CSI measurements are reported individually.

14. The method of claim 12, wherein a CSI-RS resource indicator (CRI), a precoding matrix indicator (PMI), and a rank indicator (RI) are jointly reported for the first CSI reporting configuration IE and the second CSI reporting configuration IE, and wherein channel quality information (CQI) is separately reported for the first CSI reporting configuration IE and the second CSI reporting configuration IE.

15. The method of claim 12, wherein a CSI-RS resource indicator (CRI) is reported jointly for the first CSI reporting configuration IE and the second CSI reporting configuration IE, and wherein a channel quality information (CQI) and a rank indicator (RI) are reported separately for the first CSI reporting configuration IE and the second CSI reporting configuration IE.

16. The method of claim 12, wherein a precoding matrix indicator (PMI) is reported jointly for the first CSI reporting configuration IE and the second CSI reporting configuration IE, and wherein a rank indicator (RI) is reported separately for the first CSI reporting configuration IE and the second CSI reporting configuration IE.

17. A network node comprising: processor; and a memory storing instructions that, when executed by the processor, configure the network node to: encoding a first channel state information (CSI) report configuration information element (IE), the first CSI report configuration IE including a first CSI-reference signal (RS) resource, a first powerControlOffset value for the first CSI-RS resource, and a first powerControlOffsetSS value for the first CSI-RS resource; encoding a second CSI reporting configuration IE including a second CSI-RS resource, wherein the second CSI reporting configuration IE includes a second powerControlOffset value for the second CSI-RS resource and a second powerControlOffsetSS value for the second CSI-RS resource, wherein one or both of the first powerControlOffset value and the first powerControlOffsetSS value are different from the second powerControlOffset value and the second powerControlOffsetSS value, respectively; Sending the first CSI reporting configuration IE and the second CSI reporting configuration IE to a user equipment (UE); Sending a CSI-RS using the first CSI-RS resource and the second CSI-RS resource; receiving a CSI report with a CSI measurement; and A power domain of a physical downlink shared channel (PDSCH) is dynamically adapted based on the CSI report.

18. A user equipment (UE), comprising: processor; and a memory storing instructions that, when executed by the processor, configure the UE to: receiving and decoding a first channel state information (CSI) report configuration information element (IE), the first CSI report configuration IE including a first CSI-reference signal (RS) resource, a first powerControlOffset value for the first CSI-RS resource, and a first powerControlOffsetSS value for the first CSI-RS resource; receiving and decoding a second CSI reporting configuration IE including a second CSI-RS resource, wherein the second CSI reporting configuration IE includes a second powerControlOffset value for the second CSI-RS resource and a second powerControlOffsetSS value for the second CSI-RS resource, wherein one or both of the first powerControlOffset value and the first powerControlOffsetSS value are different from the second powerControlOffset value and the second powerControlOffsetSS value, respectively; measuring a CSI-RS using the first CSI-RS resource and the second CSI-RS resource; A CSI report with CSI measurements is transmitted to a network node.

19. The UE according to claim 18, wherein the first CSI reporting configuration IE and the second CSI reporting configuration IE have one or more of the same reportQuantity, the same reportFreqConfiguration, the same timeRestrictionForChannelMeasurements, the same timeRestrictionForInterferenceMeasurements, the same cqi-Table, and the same subbandSize. 20 . The UE of claim 18 , wherein the CSI resource sets corresponding to the first CSI reporting configuration IE and the second CSI reporting configuration IE include equal values ​​for some parameters.

Images