Techniques for reporting channel quality for dynamic antenna port adaptation

Abstract

Methods, systems, and devices for wireless communication are described that provide an indication of channel state information (CSI) for a plurality of CSI codebooks associated with a plurality of different sets of antenna ports in which CSI parameters for one or more of the codebooks are reported as a differential value relative to a reported value for another of the codebooks. A user equipment (UE) may receive a CSI reporting configuration that includes a set of CSI resources and a plurality of codebooks for a plurality of different sets of antenna ports. The UE may identify a first set of CSI parameters associated with a first codebook and may identify a second set of CSI parameters associated with a second codebook. The UE may transmit a CSI report including a first set of CSI parameters and a differential set of CSI parameters indicating a difference between the first set of CSI parameters and the second set of CSI parameters.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. patent application No. 17 / 860,340, entitled “TECHNIQUES FOR REPORTING CHANNEL QUALITY FOR DYNAMIC ANTENNA PORT ADAPTATION,” filed by Ly et al. on July 8, 2022, which is assigned to the assignee of this patent application and is expressly incorporated herein by reference. Technical Field

[0003] The following relates to wireless communications, including techniques for reporting channel quality for dynamic antenna port adaptation. Background Art

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcasting, and the like. These systems may be able to support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems (such as long term evolution (LTE) systems, advanced LTE (LTE-A) systems, or LTE-A Pro systems) and fifth generation (5G) systems (which may be referred to as new radio (NR) systems). These systems may employ techniques such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations, each of which supports wireless communications for communication devices, which may be referred to as user equipment (UE).

[0005] In some wireless communication systems, some network entities such as radio units (RUs) or radio heads may communicate using multiple antenna panels or sub-panels that may facilitate multiple-input multiple-output (MIMO) communications. In some cases, different subsets of the multiple antenna panels in a sub-panel may be active at different times. Efficient communication with different numbers of antennas active may help enhance the reliability and efficiency of wireless communications between network entities and UEs. Summary of the invention

[0006] The described techniques relate to methods, systems, devices, and apparatuses that support improvements for reporting channel quality for dynamic antenna port adaptation. For example, the described techniques provide an indication of channel state information (CSI) for multiple CSI codebooks associated with multiple different antenna port sets, wherein CSI parameters for one or more of the codebooks are reported as differential values ​​relative to reported values ​​for another of the codebooks. In some cases, a user equipment (UE) may receive a CSI reporting configuration that includes a CSI resource set and multiple codebooks for multiple different antenna port sets associated with the CSI resource set. The UE may identify a first CSI parameter set associated with a first codebook, and may identify a second CSI parameter set associated with a second codebook. The UE may send a CSI report including the first CSI parameter set and the third differential CSI parameter set, the third differential CSI parameter set indicating the difference between the corresponding CSI parameters in the second CSI parameter set and the first CSI parameter set.

[0007] A method for wireless communication at a user equipment (UE) is described. The method may include: receiving a channel state information report configuration, the channel state information report configuration including a channel state information resource set and a set of multiple codebooks for antenna port sets in multiple antenna port sets associated with the channel state information resource set, wherein the set of multiple codebooks includes at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set; identifying a first channel state information parameter set associated with the first codebook; identifying a second channel state information parameter set associated with the second codebook; and sending a channel state information report, the channel state information report including the first channel state information parameter set and a third differential channel state information parameter set, wherein the third differential channel state information parameter set indicates a difference between corresponding channel state information parameters in the second channel state information parameter set and the first channel state information parameter set.

[0008] A device for wireless communication at a UE is described. The device may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executed by the processor to cause the device to: receive a channel state information report configuration, the channel state information report configuration including a channel state information resource set and a set of multiple codebooks for antenna port sets in multiple antenna port sets associated with the channel state information resource set, wherein the set of multiple codebooks includes at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set; identify a first channel state information parameter set associated with the first codebook; identify a second channel state information parameter set associated with the second codebook; and send a channel state information report, the channel state information report including the first channel state information parameter set and a third differential channel state information parameter set, wherein the third differential channel state information parameter set indicates the difference between the corresponding channel state information parameters in the second channel state information parameter set and the first channel state information parameter set.

[0009] Another apparatus for wireless communication at a UE is described. The apparatus may include: a component for receiving a channel state information report configuration, the channel state information report configuration including a channel state information resource set and a set of multiple codebooks for antenna port sets in multiple antenna port sets associated with the channel state information resource set, wherein the set of multiple codebooks includes at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set; a component for identifying a first channel state information parameter set associated with the first codebook; a component for identifying a second channel state information parameter set associated with the second codebook; and a component for sending a channel state information report, the channel state information report including the first channel state information parameter set and a third differential channel state information parameter set, wherein the third differential channel state information parameter set indicates a difference between corresponding channel state information parameters in the second channel state information parameter set and the first channel state information parameter set.

[0010] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor to perform the following operations: receiving a channel state information report configuration, the channel state information report configuration including a channel state information resource set and a set of multiple codebooks for antenna port sets in multiple antenna port sets associated with the channel state information resource set, wherein the set of multiple codebooks includes at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set; identifying a first channel state information parameter set associated with the first codebook; identifying a second channel state information parameter set associated with the second codebook; and sending a channel state information report, the channel state information report including the first channel state information parameter set and a third differential channel state information parameter set, wherein the third differential channel state information parameter set indicates a difference between corresponding channel state information parameters in the second channel state information parameter set and the first channel state information parameter set.

[0011] Some examples of the methods, devices, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following actions: determining the third differential channel state information parameter set based on an offset level between a second channel quality indicator (CQI) of the second codebook and an index value of a first CQI of the first codebook. In some examples of the methods, devices, and non-transitory computer-readable media described herein, the offset level indicates a range in a range set of differences between the second CQI and the first CQI. In some examples of the methods, devices, and non-transitory computer-readable media described herein, the index values ​​of the first CQI and the second CQI indicate CQI values.

[0012] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following actions: selecting the first codebook from the set of multiple codebooks based on the number of antenna ports associated with each codebook in the set of multiple codebooks. Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following actions: selecting the first codebook from the set of multiple codebooks based on the number of antenna port columns or the number of antenna port rows associated with each codebook in the set of multiple codebooks. Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following actions: selecting the first codebook from the set of multiple codebooks based on an index value associated with the list of the multiple antenna port sets associated with the channel state information resource set.

[0013] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the first codebook corresponds to a base codebook associated with the set of channel state information resources that may be indicated in the channel state information report configuration. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the channel state information report includes an indication of an index value associated with the first codebook. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the channel state information report configuration also includes an identification of which codebook in the set of the plurality of codebooks corresponds to the first codebook.

[0014] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the first channel state information parameter set includes a first CQI associated with a first downlink channel codeword and a second CQI associated with a second downlink channel codeword, and wherein the third differential channel state information parameter set indicates a difference between a third CQI associated with the second channel state information parameter set and one of the first CQI or the second CQI. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the third differential channel state information parameter set indicates a difference between the third CQI and the first CQI, and wherein the second CQI may be reported as a differential value from the first CQI.

[0015] A method for wireless communication at a network entity is described. The method may include: sending a channel state information report configuration to a UE, the channel state information report configuration including a channel state information resource set and a set of multiple codebooks for antenna port sets in multiple antenna port sets associated with the channel state information resource set, wherein the set of multiple codebooks includes at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set; sending one or more reference signals via the channel state information resource set; and receiving a channel state information report from the UE based on the one or more reference signals, the channel state information report including a first channel state information parameter set associated with the first codebook and a third differential channel state information parameter set associated with the second codebook, wherein the third differential channel state information parameter set indicates a difference between corresponding channel state information parameters in the second channel state information parameter set and the first channel state information parameter set.

[0016] A device for wireless communication at a network entity is described. The device may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executed by the processor to cause the device to: send a channel state information report configuration to a UE, the channel state information report configuration including a channel state information resource set and a set of multiple codebooks for antenna port sets in multiple antenna port sets associated with the channel state information resource set, wherein the set of multiple codebooks includes at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set; send one or more reference signals via the channel state information resource set; and receive a channel state information report from the UE based on the one or more reference signals, the channel state information report including a first channel state information parameter set associated with the first codebook and a third differential channel state information parameter set associated with the second codebook, wherein the third differential channel state information parameter set indicates a difference between corresponding channel state information parameters in the second channel state information parameter set and the first channel state information parameter set.

[0017] Another apparatus for wireless communication at a network entity is described. The apparatus may include: a component for sending a channel state information report configuration to a UE, the channel state information report configuration including a channel state information resource set and a set of multiple codebooks for antenna port sets in multiple antenna port sets associated with the channel state information resource set, wherein the set of multiple codebooks includes at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set; a component for sending one or more reference signals via the channel state information resource set; and a component for receiving a channel state information report from the UE based on the one or more reference signals, the channel state information report including a first channel state information parameter set associated with the first codebook and a third differential channel state information parameter set associated with the second codebook, wherein the third differential channel state information parameter set indicates a difference between corresponding channel state information parameters in the second channel state information parameter set and the first channel state information parameter set.

[0018] A non-transitory computer-readable medium storing code for wireless communication at a network entity is described. The code may include instructions executable by a processor to perform the following operations: send a channel state information report configuration to a UE, the channel state information report configuration including a channel state information resource set and a set of multiple codebooks for multiple antenna port sets associated with the channel state information resource set, wherein the set of multiple codebooks includes at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set; send one or more reference signals via the channel state information resource set; and receive a channel state information report from the UE based on the one or more reference signals, the channel state information report including a first channel state information parameter set associated with the first codebook and a third differential channel state information parameter set associated with the second codebook, wherein the third differential channel state information parameter set indicates a difference between corresponding channel state information parameters in the second channel state information parameter set and the first channel state information parameter set.

[0019] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following actions: determining the second channel state information parameter set based on an offset level between the second CQI of the second codebook and the index value of the first CQI of the first codebook, the offset level may be provided in the third differential channel state information parameter set. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the offset level indicates a range in a range set of the difference between the second CQI and the first CQI. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, these index values ​​of the first CQI and the second CQI indicate CQI values.

[0020] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following actions: selecting the first codebook from the set of multiple codebooks based on the number of antenna ports associated with each codebook in the set of multiple codebooks. Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following actions: selecting the first codebook from the set of multiple codebooks based on the number of antenna port columns or the number of antenna port rows associated with each codebook in the set of multiple codebooks. Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following actions: selecting the first codebook from the set of multiple codebooks based on an index value associated with the list of the multiple antenna port sets associated with the channel state information resource set.

[0021] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the first codebook corresponds to a base codebook associated with the channel state information resource set indicated in the channel state information report configuration. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the channel state information report includes an indication of an index value associated with the first codebook. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the channel state information report configuration also includes an identification of which codebook of the plurality of codebooks corresponds to the first codebook.

[0022] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the first channel state information parameter set includes a first CQI associated with a first downlink channel codeword and a second CQI associated with a second downlink channel codeword, and wherein the third differential channel state information parameter set indicates a difference between a third CQI associated with the second channel state information parameter set and one of the first CQI or the second CQI. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the third differential channel state information parameter set indicates a difference between the third CQI and the first CQI, and wherein the second CQI may be reported as a differential value from the first CQI. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 An example of a wireless communication system supporting techniques for reporting channel quality for dynamic antenna port adaptation in accordance with one or more aspects of the present disclosure is illustrated.

[0024] Figure 2 An example of a wireless communication system supporting techniques for reporting channel quality for dynamic antenna port adaptation in accordance with one or more aspects of the present disclosure is illustrated.

[0025] Figure 3 An example of a CSI reporting configuration supporting techniques for reporting channel quality for dynamic antenna port adaptation according to one or more aspects of the present disclosure is illustrated.

[0026] Figure 4 Examples of antenna panel configurations that support techniques for reporting channel quality for dynamic antenna port adaptation in accordance with one or more aspects of the present disclosure are illustrated.

[0027] Figure 5 An example of a CSI framework for dynamic antenna port adaptation that supports techniques for reporting channel quality for dynamic antenna port adaptation according to one or more aspects of the present disclosure is illustrated.

[0028] Figure 6An example of a process flow supporting techniques for reporting channel quality for dynamic antenna port adaptation in accordance with one or more aspects of the present disclosure is illustrated.

[0029] Figure 7 and Figure 8 A block diagram of a device supporting techniques for reporting channel quality for dynamic antenna port adaptation in accordance with one or more aspects of the present disclosure is shown.

[0030] Fig. 9 A block diagram of a communications manager supporting techniques for reporting channel quality for dynamic antenna port adaptation in accordance with one or more aspects of the present disclosure is shown.

[0031] Fig.10 A diagram of a system including devices supporting techniques for reporting channel quality for dynamic antenna port adaptation in accordance with one or more aspects of the present disclosure is shown.

[0032] Fig.11 and Fig.12 A block diagram of a device supporting techniques for reporting channel quality for dynamic antenna port adaptation in accordance with one or more aspects of the present disclosure is shown.

[0033] Fig.13 A block diagram of a communications manager supporting techniques for reporting channel quality for dynamic antenna port adaptation in accordance with one or more aspects of the present disclosure is shown.

[0034] Fig.14 A diagram of a system including devices supporting techniques for reporting channel quality for dynamic antenna port adaptation in accordance with one or more aspects of the present disclosure is shown.

[0035] Figures 15 to 20 A flow chart illustrating a method supporting techniques for reporting channel quality for dynamic antenna port adaptation in accordance with one or more aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0036] In some wireless communication systems such as fifth generation (5G) systems, beamforming communications may be used, in which multiple directional beams are used for communications in multiple directions from a network entity such as a radio unit (RU) or a radio head. To support such directional beamforming, such network entities may use multiple different antenna panels, antenna sub-panels, or both, where different combinations of antenna ports may be used to form beams in the desired direction. In some cases, to help reduce power consumption, some antenna panels or antenna sub-panels may be inactive for specific time periods. For example, based on the amount of data traffic and the number of devices being served, the network entity may disable one or more antenna panels and use a subset of the available antenna panels or sub-panels for communications. Such techniques may be referred to as dynamic antenna port adaptation, in which the network entity may dynamically adjust the number of antennas used for communication.

[0037] In order to appropriately adjust transmission parameters when different antennas are used for continuous communication with a user equipment (UE), a network entity may use channel state information (CSI) reports associated with two or more potential antenna port sets. Based on the CSI reports for different antenna port sets, communications using different antenna sets may be appropriately adjusted to provide reliable communication. However, sending separate CSI reports for multiple different possible combinations of antenna ports may consume a relatively large amount of overhead and consume UE power. Therefore, relative to sending a full CSI report for each reported antenna port set, a technique for efficiently reporting CSI for different available combinations of antenna ports will be beneficial in reducing overhead usage of radio resources and reducing UE power.

[0038] According to various aspects discussed herein, a differential CSI reporting technique is provided that allows a UE to provide a CSI report having a first set of CSI parameters (e.g., channel quality information (CQI) parameters) for a first codebook for a set of antenna ports of a CSI resource set and a second set of differential CSI parameters for a second codebook for a second set of antenna ports of the CSI resource set. Differential CSI parameters may be provided for different antenna port sets for different CSI codebooks used to report wideband CSI. In some cases, the UE may report CQI for a first codebook and report differential CQI for each of the other codebooks. In some cases, the differential CQI may be determined as a difference between a CQI index for each of the other codebooks and a CQI index for the first codebook, and the difference may be mapped to an offset level range. The offset level range for each differential CQI may be reported, thereby significantly reducing the amount of data for the differential CSI report relative to a CSI report that would contain the full CSI parameters.

[0039] In some cases, the first codebook of the configured codebook set for the CSI resource set may be selected as a codebook with the maximum (or minimum) number of antenna ports, a codebook with the maximum / minimum N1 or N2 value, a codebook with the maximum / minimum index value of the configured codebook list, or a base codebook associated with the CSI resource set. In some cases, the first codebook may be explicitly indicated by the UE using the CSI report (e.g., as an index value of the configured codebook), or the network entity may indicate which codebook to use at the first codebook. In the case where the codebook has a CSI rank higher than four, the first CQI may be associated with the first downlink channel codeword and the second CQI may be associated with the second downlink channel codeword, and the reference CQI for differential reporting may be the first CQI or the second CQI.

[0040] Various aspects of the present disclosure are first described in the context of a wireless communication system. Various aspects of the present disclosure are further illustrated and described with reference to CSI reporting configurations, process flows, apparatus diagrams, system diagrams, and flow diagrams involving techniques for reporting channel quality for dynamic antenna port adaptation.

[0041] Figure 1 An example of a wireless communication system 100 supporting techniques for reporting channel quality for dynamic antenna port adaptation according to one or more aspects of the present disclosure is illustrated. The wireless communication system 100 may include one or more network entities 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a Long Term Evolution (LTE) network, an Advanced LTE (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating according to other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.

[0042] The network entities 105 may be dispersed throughout a geographic area to form the wireless communication system 100, and may include devices in different forms or with different capabilities. In various examples, the network entities 105 may be referred to as network elements, mobility elements, radio access network (RAN) nodes, or network equipment, among other nomenclature. In some examples, the network entities 105 and the UE 115 may communicate wirelessly via one or more communication links 125 (e.g., radio frequency (RF) access links). For example, the network entity 105 may support a coverage area 110 (e.g., a geographic coverage area) within which the UE 115 and the network entity 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area within which the network entity 105 and the UE 115 may support signal communications according to one or more radio access technologies (RATs).

[0043] The UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary or mobile, or stationary and mobile at different times. The UEs 115 may be devices in different forms or with different capabilities. Figure 1 Some example UEs 115 are illustrated in FIG. 1 . The UEs 115 described herein may be capable of supporting communications with various types of devices, such as Figure 1 Other UEs 115 or network entities 105 are shown.

[0044] As described herein, a node of the wireless communication system 100 (which may be referred to as a network node or a wireless node) may be a network entity 105 (e.g., any network entity described herein), a UE 115 (e.g., any UE described herein), a network controller, an apparatus, a device, a computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, the node may be a UE 115. As another example, the node may be a network entity 105. As another example, a first node may be configured to communicate with a second node or a third node. In one aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a UE 115. In another aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a network entity 105. In other aspects of this example, the first node, the second node, and the third node may be different relative to these examples. Similarly, references to UE 115, network entity 105, apparatus, device, computing system, etc. may include disclosure of UE 115, network entity 105, apparatus, device, computing system, etc. as nodes. For example, a disclosure that UE 115 is configured to receive information from network entity 105 also discloses that the first node is configured to receive information from a second node.

[0045] In some examples, the network entities 105 may communicate with the core network 130, or communicate with each other, or both. For example, the network entities 105 may communicate with the core network 130 via one or more backhaul communication links 120 (e.g., according to S1, N2, N3 or other interface protocols). In some examples, the network entities 105 may communicate with each other through the backhaul communication link 120 (e.g., according to X2, Xn or other interface protocols) directly (e.g., directly between each network entity 105) or indirectly (e.g., via the core network 130). In some examples, the network entities 105 may communicate with each other via the midhaul communication link 162 (e.g., according to the midhaul interface protocol) or the fronthaul communication link 168 (e.g., according to the fronthaul interface protocol) or any combination thereof. The backhaul communication link 120, the midhaul communication link 162, or the fronthaul communication link 168 may be or include one or more wired links (e.g., electrical links, optical fiber links), one or more wireless links (e.g., radio links, wireless optical links), etc. or various combinations thereof. UE 115 may communicate with core network 130 via communication link 155 .

[0046] One or more of the network entities 105 described herein may include or may be referred to as a base station 140 (e.g., a transceiver base station, a radio base station, an NR base station, an access point, a radio transceiver, a Node B, an evolved Node B (eNB), a next-generation Node B, or a Gigabit Node B (any of which may be referred to as a gNB), a 5G NB, a next-generation eNB (ng-eNB), a Home Node B, a Home Evolved Node B, or other suitable terms). In some examples, the network entity 105 (e.g., a base station 140) may be implemented in an aggregated (e.g., monolithic, stand-alone) base station architecture, which may be configured to utilize a protocol stack physically or logically integrated within a single network entity 105 (e.g., a single RAN node, such as a base station 140).

[0047] In some examples, the network entity 105 may be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture) that may be configured to utilize a protocol stack that is physically or logically distributed between two or more network entities 105, such as an integrated access backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance), or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN)). For example, the network entity 105 may include one or more of the following: a central unit (CU) 160, a distributed unit (DU) 165, a radio unit (RU) 170, a RAN intelligent controller (RIC) 175 (e.g., a near real-time RIC (near RT RIC), a non-real-time RIC (non-RT RIC)), a service management and orchestration (SMO) 180 system, or any combination thereof. The RU 170 may also be referred to as a radio head, a smart radio head, a remote radio head (RRH), a remote radio unit (RRU), or a transmit receive point (TRP). One or more components of the network entity 105 in the decomposed RAN architecture may be co-located, or one or more components of the network entity 105 may be located in distributed locations (e.g., separate physical locations). In some examples, one or more network entities 105 of the decomposed RAN architecture may be implemented as virtual units (e.g., virtual CU (VCU), virtual DU (VDU), virtual RU (VRU)).

[0048] The functional split between CU 160, DU 165, and RU 170 is flexible and may support different functionalities, depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combination thereof) are performed at CU 160, DU 165, or RU 170. For example, a functional split of a protocol stack may be employed between CU 160 and DU 165 such that CU 160 may support one or more layers of a protocol stack and DU 165 may support one or more different layers of a protocol stack. In some examples, CU 160 may host higher protocol layer (e.g., layer 3 (L3), layer 2 (L2)) functionality and signaling (e.g., radio resource control (RRC), service data adaptation protocol (SDAP), packet data convergence protocol (PDCP)). The CU 160 may be connected to one or more DUs 165 or RUs 170, and the one or more DUs 165 or RUs 170 may host lower protocol layers, such as layer 1 (L1) (e.g., physical (PHY) layer) or L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU 160. Additionally or alternatively, a functional split of the protocol stack may be employed between the DU 165 and the RU 170, such that the DU 165 may support one or more layers of the protocol stack, and the RU 170 may support one or more different layers of the protocol stack. The DU 165 may support one or more different cells (e.g., via one or more RUs 170). In some cases, the functional split between CU 160 and DU 165 or between DU 165 and RU 170 can be within the protocol layer (e.g., some functions of the protocol layer can be performed by one of CU 160, DU 165, or RU 170, while other functions of the protocol layer are performed by different ones of CU 160, DU 165, or RU 170). CU 160 can be further functionally split into CU control plane (CU-CP) and CU user plane (CU-UP) functions. CU 160 can be connected to one or more DUs 165 via midhaul communication links 162 (e.g., F1, F1-c, F1-u), and DU 165 can be connected to one or more RUs 170 via fronthaul communication links 168 (e.g., open fronthaul (FH) interface). In some examples, midhaul communication link 162 or fronthaul communication link 168 may be implemented based on interfaces (eg, channels) between layers of a protocol stack supported by respective network entities 105 that communicate via those communication links.

[0049] In some wireless communication systems (e.g., wireless communication system 100), infrastructure and spectrum resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, thereby providing an IAB network architecture (e.g., to core network 130). In some cases, in an IAB network, one or more network entities 105 (e.g., IAB nodes 104) may be partially controlled by each other. One or more IAB nodes 104 may be referred to as donor entities or IAB donors. One or more DUs 165 or one or more RUs 170 may be controlled in part by one or more CUs 160 associated with a donor network entity 105 (e.g., donor base station 140). One or more donor network entities 105 (e.g., IAB donors) may communicate with one or more additional network entities 105 (e.g., IAB nodes 104) via supported access and backhaul links (e.g., backhaul communication links 120). The IAB node 104 may include an IAB mobile terminal (IAB-MT) controlled (e.g., scheduled) by a coupled IAB donor's DU 165. The IAB-MT may include an independent set of antennas for relaying communications with the UE 115, or may share the same antennas of the IAB node 104 (e.g., of the RU 170) for access via the DU 165 of the IAB node 104 (e.g., referred to as a virtual IAB-MT (vIAB-MT)). In some examples, the IAB node 104 may include a DU 165 that supports communication links with additional entities (e.g., IAB node 104, UE 115) within a relay chain or configuration (e.g., downstream) of the access network. In such cases, one or more components of the decomposed RAN architecture (e.g., one or more IAB nodes 104 or components of the IAB node 104) may be configured to operate according to the techniques described herein.

[0050] For example, an access network (AN) or RAN may include an access node (e.g., an IAB donor), communications between an IAB node 104, and one or more UEs 115. The IAB donor may facilitate connectivity between the core network 130 and the AN (e.g., via a wired or wireless connection to the core network 130). That is, the IAB donor may refer to a RAN node having a wired or wireless connection to the core network 130. The IAB donor may include a CU 160 and at least one DU 165 (e.g., and RU 170), in which case the CU 160 may communicate with the core network 130 via an interface (e.g., a backhaul link). The IAB donor and the IAB node 104 may communicate via an F1 interface according to a protocol defining signaling messages (e.g., an F1 AP protocol). Additionally or alternatively, CU 160 may communicate with the core network via an interface (which may be an example of a portion of a backhaul link) and may communicate with other CUs 160 (e.g., CUs 160 associated with alternative IAB donors) via an Xn-C interface (which may be an example of a portion of a backhaul link).

[0051] The IAB node 104 may refer to a RAN node that provides IAB functions (e.g., access for UE 115, wireless self-backhaul capabilities, etc.). The DU 165 may act as a distributed scheduling node toward a child node associated with the IAB node 104, and the IAB-MT may act as a scheduled node toward a parent node associated with the IAB node 104. That is, the IAB donor may be referred to as a parent node that communicates with one or more child nodes (e.g., the IAB donor may relay transmissions to the UE through one or more other IAB nodes 104). Additionally or alternatively, the IAB node 104 may also be referred to as a parent node or child node of other IAB nodes 104, depending on the relay chain or configuration of the AN. Therefore, the IAB-MT entity of the IAB node 104 may provide a Uu interface for the child IAB node 104 to receive signaling from the parent IAB node 104, and the DU interface (e.g., DU 165) may provide a Uu interface for the parent IAB node 104 to signal to the child IAB node 104 or the UE 115.

[0052] For example, the IAB node 104 may be referred to as a parent node supporting child IAB node communications or as a child node associated with an IAB donor, or both. The IAB donor may include a CU 160 having a wired or wireless connection (e.g., backhaul communication link 120) to the core network 130, and may act as a parent node of the IAB node 104. For example, the DU 165 of the IAB host may relay the transmission to the UE 115 through the IAB node 104, or may directly signal the UE 115 of the transmission, or both. The CU 160 of the IAB donor may signal the IAB node 104 of the communication link establishment via the F1 interface, and the IAB node 104 may schedule the transmission (e.g., the transmission relayed from the IAB donor to the UE 115) through the DU 165. That is, data may be relayed to and from the IAB node 104 via signaling via the NR Uu interface of the MT to the IAB node 104. Communications with the IAB node 104 may be scheduled by the DU 165 of the IAB donor, and communications with the IAB node 104 may be scheduled by the DU 165 of the IAB node 104 .

[0053] Where the techniques described herein are applied to the context of a disaggregated RAN architecture, one or more components of the disaggregated RAN architecture may be configured to support techniques for reporting channel quality for dynamic antenna port adaptation as described herein. For example, some operations described as being performed by a UE 115 or a network entity 105 (e.g., a base station 140) may additionally or alternatively be performed by one or more components of the disaggregated RAN architecture (e.g., an IAB node 104, a DU 165, a CU 160, a RU 170, a RIC 175, a SMO 180).

[0054] UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable term, where a "device" may also be referred to as a unit, a station, a terminal, or a client, etc. UE 115 may also include or may be referred to as a personal electronic device, such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, UE 115 may include or may be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communication (MTC) device, etc., which may be implemented in various objects such as appliances or vehicles, meters, etc.

[0055] The UE 115 described herein may be capable of communicating with various types of devices such as other UEs 115 which may sometimes act as relays, as well as network entities 105 and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, etc. Figure 1 shown.

[0056] The UE 115 and the network entity 105 may wirelessly communicate with each other via one or more communication links 125 (e.g., access links) using resources associated with one or more carriers. The term "carrier" may refer to a collection of RF spectrum resources having a physical layer structure defined for supporting the communication link 125. For example, a carrier for the communication link 125 may include a portion of an RF spectrum band (e.g., a bandwidth portion (BWP)) that operates according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling for coordinating carrier operations, user data, or other signaling. The wireless communication system 100 may support communications with the UE 115 using carrier aggregation or multi-carrier operation. Depending on the carrier aggregation configuration, the UE 115 may be configured to have multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation may be used for both frequency division duplex (FDD) and time division duplex (TDD) component carriers. Communication between the network entity 105 and other devices may refer to communication between these devices and any portion (e.g., entity, sub-entity) of the network entity 105. For example, the terms "send," "receive," or "communicate" when referring to the network entity 105 may refer to any portion of a network entity 105 (e.g., base station 140, CU 160, DU 165, RU 170) of a RAN communicating with another device (e.g., directly or via one or more other network entities 105).

[0057] The signal waveform transmitted via the carrier may include multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques, such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system using MCM techniques, a resource element may refer to a symbol period (e.g., the duration of a modulation symbol) and a resource of a subcarrier, in which case the symbol period and the subcarrier spacing may be inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both), so that a relatively high number of resource elements (e.g., in the transmission duration) and a relatively high order modulation scheme may correspond to a relatively high communication rate. Wireless communication resources may refer to a combination of RF spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial resources may increase the data rate or data integrity used for communication with UE 115.

[0058] One or more numerologies of a carrier may be supported, and the numerologies may include subcarrier spacing (Δf) and cyclic prefixes. A carrier may be divided into one or more BWPs with the same or different numerologies. In some examples, a UE 115 may be configured with multiple BWPs. In some examples, a single BWP of a carrier may be active at a given time, and communications of a UE 115 may be constrained to one or more active BWPs.

[0059] The time interval for the network entity 105 or the UE 115 may be expressed as a multiple of a basic time unit, which may be, for example, T s =1 / (Δf max ·N f ) seconds sampling period, where the sampling period, Δf max It can represent the supported subcarrier spacing, and N f The supported discrete Fourier transform (DFT) size may be indicated. The time intervals of the communication resources may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0060] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, the frame may be divided into subframes (e.g., in the time domain), and each subframe may be further divided into a certain number of time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include a certain number of symbol periods (e.g., depending on the length of the cyclic prefix appended in front of each symbol period). In some wireless communication systems 100, the time slot may be further divided into a plurality of micro time slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., N f The duration of a symbol period may depend on the subcarrier spacing or the operating frequency band.

[0061] A subframe, slot, mini-slot, or symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., the number of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in a burst of a shortened TTI (sTTI)).

[0062] Carrier multiplexing physical channels may be used for communication according to various techniques. Physical control channels and physical data channels may be multiplexed via downlink carriers for signaling using, for example, one or more of a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique. A control region (e.g., a control resource set (CORESET)) of a physical control channel may be defined by a set of symbol periods and may extend across a system bandwidth of a carrier or a subset of that system bandwidth. One or more control regions (e.g., CORESETs) may be configured for a set of UEs 115. For example, one or more UEs in UE 115 may monitor or search a control region for control information according to one or more search space sets, and each search space set may include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. The aggregation level of a control channel candidate may refer to the amount of control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. The search space sets may include a common search space set configured for transmitting control information to multiple UEs 115 , and a UE-specific search space set for transmitting control information to a specific UE 115 .

[0063] In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT), enhanced mobile broadband (eMBB)) that may provide access to different types of devices.

[0064] In some examples, the network entities 105 (e.g., base stations 140, RUs 170) may be mobile and thus provide communication coverage for mobile coverage areas 110. In some examples, different coverage areas 110 associated with different technologies may overlap, but the different coverage areas 110 may be supported by the same network entity 105. In some other examples, overlapping coverage areas 110 associated with different technologies may be supported by different network entities 105. The wireless communication system 100 may include, for example, a heterogeneous network in which different types of network entities 105 provide coverage for various coverage areas 110 using the same or different radio access technologies.

[0065] Some UEs 115, such as MTC or IoT devices, may be low-cost or low-complexity devices and may allow automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technology that allows devices to communicate with each other or with a network entity 105 (e.g., base station 140) without human intervention. In some examples, M2M communication or MTC may include communication from devices that integrate sensors or meters to measure or capture information and relay such information to a central server or application that uses the information or presents the information to a person interacting with the application. Some UEs 115 may be designed to collect information or implement automated behavior of machines or other devices. Examples of applications for MTC devices include: smart metering, inventory monitoring, water level monitoring, equipment monitoring, health care monitoring, field survival monitoring, weather and geographic event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based commercial charging.

[0066] The wireless communication system 100 may be configured to support ultra-reliable communication or low-latency communication or various combinations thereof. For example, the wireless communication system 100 may be configured to support ultra-reliable low-latency communication (URLLC). UE 115 may be designed to support ultra-reliable or low-latency or critical functions. Ultra-reliable communication may include private communication or group communication, and may be supported by one or more services (such as push-to-talk, video, or data). Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, and ultra-reliable low-latency may be used interchangeably herein.

[0067] In some examples, a UE 115 may be configured to support communication directly with other UEs 115 via a device-to-device (D2D) communication link 135 (e.g., according to a peer-to-peer (P2P), D2D, or sidelink protocol). In some examples, one or more UEs 115 in a group that are performing D2D communication may be within a coverage area 110 of a network entity 105 (e.g., a base station 140, a RU 170), which may support aspects of such D2D communication configured or (e.g., scheduled) by the network entity 105. In some examples, one or more UEs 115 of such a group may be outside of the coverage area 110 of the network entity 105, or may otherwise be unable or not configured to receive transmissions from the network entity 105. In some examples, a group of UEs 115 communicating via D2D communication may support a one-to-many (1:M) system, in which each UE 115 transmits to each of the other UEs 115 in the group. In some examples, network entity 105 may facilitate scheduling of resources for D2D communications. In some other examples, D2D communications may be performed between UEs 115 without involving network entity 105.

[0068] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or a 5G core (5GC), which may include at least one control plane entity (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) for managing access and mobility and at least one user plane entity (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)) for routing packets or interconnecting to an external network. The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management of UE 115 served by a network entity 105 (e.g., a base station 140) associated with the core network 130. User IP packets may be delivered through the user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to the IP service 150 of one or more network operators. IP services 150 may include access to the Internet, an intranet, an IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0069] The wireless communication system 100 may operate using one or more frequency bands that may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Generally speaking, the region from 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelength ranges from about one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features (which may be referred to as clusters), but these waves may be sufficient to penetrate structures so that macro cells provide services to UEs 115 located indoors. Communications using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) than communications using lower frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0070] The wireless communication system 100 may also operate using a super high frequency (SHF) region that may be in the range of from 3 GHz to 30 GHz (also referred to as a centimeter band) or an extremely high frequency (EHF) region that uses a spectrum (e.g., from 30 GHz to 300 GHz) (also referred to as a millimeter band). In some examples, the wireless communication system 100 may support millimeter wave (mmW) communications between a UE 115 and a network entity 105 (e.g., a base station 140, a RU 170), and the EHF antenna of the corresponding device may be smaller and closer than the UHF antenna. In some examples, such technology may facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may be affected by greater attenuation and a shorter range than SHF or UHF transmissions. The technology disclosed herein may be adopted across transmissions using one or more different frequency regions, and the use of frequency bands specified across these frequency regions may differ by country or regulatory agency.

[0071] The wireless communication system 100 may utilize licensed and unlicensed RF spectrum bands. For example, the wireless communication system 100 may employ license assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology using unlicensed bands (such as the 5 GHz Industrial, Scientific, and Medical (ISM) band). When operating using unlicensed RF spectrum bands, devices such as network entity 105 and UE 115 may employ carrier sensing for conflict detection and avoidance. In some examples, operations using unlicensed bands may be based on carrier aggregation configuration (e.g., LAA) in conjunction with component carriers operating using licensed bands. Operations using unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, and the like.

[0072] The network entity 105 (e.g., base station 140, RU 170) or UE 115 may be equipped with multiple antennas that can be used to employ technologies such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication, or beamforming. The antennas of the network entity 105 or UE 115 may be located in one or more antenna arrays or antenna panels, which can support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, antennas or antenna arrays associated with the network entity 105 may be located at different geographical locations. The network entity 105 may include an antenna array having a collection of multiple rows and columns of antenna ports that the network entity 105 can use to support beamforming for communications with the UE 115. Similarly, the UE 115 may include one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support RF beamforming for signals sent via the antenna ports.

[0073] The network entity 105 or UE 115 may use MIMO communication to utilize multipath signal propagation and improve spectral efficiency by sending or receiving multiple signals via different spatial layers. Such a technology may be referred to as spatial multiplexing. The multiple signals may be sent, for example, by a transmitting device via different antennas or different combinations of antennas. Similarly, the multiple signals may be received by a receiving device via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry information associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports for channel measurement and reporting. MIMO technologies include: single-user MIMO (SU-MIMO), for which multiple spatial layers are sent to the same receiving device; and multi-user MIMO (MU-MIMO), in which multiple spatial layers are sent to multiple devices.

[0074] Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a network entity 105, a UE 115) to shape or direct an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining signals conveyed via antenna elements of an antenna array so that some signals propagating along a particular direction relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals conveyed via antenna elements may include the transmitting device or the receiving device applying an amplitude offset, a phase offset, or both to signals carried via antenna elements associated with the device. Adjustments associated with each of these antenna elements may be defined by a set of beamforming weights associated with a particular direction (e.g., relative to the antenna array of the transmitting device or the receiving device or relative to some other direction).

[0075] The wireless communication system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, communications at the bearer or PDCP layer may be IP-based. The RLC layer may perform packet segmentation and reassembly to communicate via logical channels. The MAC layer may perform priority processing and multiplexing of logical channels into transport channels. The MAC layer may also implement error detection techniques, error correction techniques, or both to support retransmission to improve link efficiency. In the control plane, the RRC layer may provide the establishment, configuration, and maintenance of an RRC connection that supports a radio bearer for user plane data between the UE 115 and the network entity 105 or the core network 130. The PHY layer may map a transport channel to a physical channel.

[0076] In some cases, a CSI reporting configuration for reporting CSI to the network entity 105 may be provided to one or more UEs 115. Each CSI reporting configuration may include multiple CSI codebooks associated with multiple different antenna port sets. In some cases, the UE 115 may report CSI parameters for one or more of the codebooks as differential values ​​relative to reported values ​​for another of the codebooks. In some examples, the UE 115 may identify a first CSI parameter set associated with a first codebook and a second CSI parameter set associated with a second codebook. The UE 115 may send a CSI report including the first CSI parameter set and a third differential CSI parameter set, the third differential CSI parameter set indicating a difference between corresponding CSI parameters in the second CSI parameter set and the first CSI parameter set.

[0077] Figure 2An example of a wireless communication system 200 that supports techniques for reporting channel quality for dynamic antenna port adaptation according to one or more aspects of the present disclosure is illustrated. As shown, the wireless communication system 200 may include a UE 115-a and a network entity 105-a, which may be as described above with reference to Figure 1 The wireless communication system 200 may also include a downlink 205 and an uplink 210. The network entity 105-a may use the downlink 205 to transmit control and / or data information to the UE 115-a. And the UE 115-a may use the uplink 210 to transmit control and / or data information to the network entity 105-a. In some cases, the downlink 205 may use different time and / or frequency resources than the uplink 210.

[0078] In some cases, the network entity 105-a may use multiple antenna panels 230 to communicate with various served UEs 115, and in some cases, one or more of the antenna panels 230 may have multiple antenna sub-panels 235. In some cases, the network entity 105-a may turn off some antenna panels 230 or sub-panels 235 (e.g., for power reduction) and use a subset of the antenna panels 230 and sub-panels 235 that remain on to communicate. For example, some MIMO communications (e.g., high-capacity MIMO) utilize multiple co-located antenna panels 230 or sub-panels 235 that include multiple antenna ports. Each panel may be equipped with a relatively large number of power amplifiers (PAs), and therefore the antenna subsystem may consume a relatively large amount of power when all antennas are enabled. Through dynamic antenna port adaptation, if the traffic load is relatively low, the network entity 105-a may dynamically determine to turn off one or more antenna panels 230, one or more antenna sub-panels 235, or one or more antenna ports 240 for energy efficiency. Figure 2 In the example of , the first antenna panel 230-a may have a plurality of antenna sub-panels 235, including a first antenna sub-panel 235-a, a second antenna sub-panel 235-b, a third antenna sub-panel 235-c, and a fourth antenna sub-panel 235-d. In this example, in the first time period t 1 At t, each of the antenna subpanels 235-a to 235-d may be turned on and actively sending or receiving communications, and during a second time period t 2 At this time, only the first antenna subpanel 235-a may be active, while each of the second antenna subpanel 235-b, the third antenna subpanel 235-c, and the fourth antenna subpanel 235-d may be closed.

[0079] In order to 1 ) and the second time period (t 2), the network entity 105-a may indicate to the UE 115-a appropriate parameters for communicating using different sets of antenna ports 240 that are active in different time periods. The communication parameters may be determined based on one or more CSI reports 215 provided by the UE 115-a, the communication parameters including measurements of one or more CSI reference signals (CSI-RS) 220 made according to a CSI report configuration 225. In some cases, the CSI report configuration 225 may indicate N codebook configurations, each of which provides CSI for a different combination of antenna ports 240. In some cases, the UE 115-a may be configured to provide X≤N CSI in a single CSI report 215. Reference Figures 3 to 5 Examples of CSI reporting configurations 225 are discussed in more detail.

[0080] According to various techniques discussed herein, in cases where two or more CSIs are to be provided in one CSI report 215 (e.g., X>1), one or more of the CSIs may be provided as differential CSI reports to reduce reporting overhead. In some cases, the CQI reported in the CSI report 215 may be a differential CQI provided in a CSI report 215 associated with a CSI reporting configuration 225 having multiple codebook configurations. In some cases, the UE 115-a may report a reference CQI for a reference codebook in a first portion of the CSI report 215 (e.g., in CSI part 1 of the CSI report 215), and the UE 115-a may report a supplemental differential CQI associated with another codebook in a second portion of the CSI report 215 (e.g., in CSI part 2). In some cases, the differential CQI for a codebook may be defined based on an offset from the reference CQI (e.g., offset level (c) = supplemental CQI index (c) - reference CQI index). In some cases, the offset level may be mapped into different offset level ranges. According to various aspects, both the supplemental CQI index and the reference CQI index are wideband CQI indices (eg, they span a configured bandwidth part (BWP), where a BWP may include two or more subbands).

[0081] In some cases, the reference codebook used to determine the differential CQI value may be a configured codebook or a codebook determined based on one or more factors. In some cases, the reference codebook may be a codebook from a CSI configuration 225 with a maximum or minimum number of antenna ports (e.g., calculated by 2*N1*N2, where N1 is the number of antenna port columns and N2 is the number of antenna port rows). In such cases, if the two codebooks have the same number of antenna ports, the reference codebook may correspond to a codebook with a larger or smaller N1 value; or may correspond to a codebook with a larger or smaller N2 value. Additionally or alternatively, if the two codebooks have the same number of antenna ports, the reference codebook may be selected based on the order in the antenna port configuration list in the CSI report configuration 225 (e.g., the first codebook or the last codebook with the largest number of antenna ports). In some cases, the reference codebook may be a codebook associated with a resource in a CSI resource set (e.g., a base codebook). In some cases, a reference codebook may be selected by the UE 115-a and may be reported to the network entity 105-a (e.g., as an index value indicating the reference codebook). For example, the UE 115-a may select a reference codebook based on spectral efficiency, CQI, rank, or any combination thereof, and report an index value of the selected codebook (e.g., with the CSI report 215 or in separate signaling such as RRC signaling or a medium access control (MAC) control element). In some cases, the network entity 105-a may select a reference codebook and provide an indication of the reference codebook index to the UE 115-a (e.g., in the CSI report configuration 225 or in separate signaling such as RRC signaling or a MAC-CE).

[0082] In some cases, the rank of UE 115-a may be higher than 4 (e.g., rank 5, 6, 7, 8), and the downlink channel may have two codewords. In such cases, UE 115-a may report two CQIs, one CQI for each codeword (2-codeword case). In such 2-codeword cases, the reference codebook for differential CQI reporting may be the CQI associated with the first codeword (e.g., reported in CSI part 1). In some cases, a codebook differential CQI may be used to report the CQI of the second codeword of the reference codebook. In some cases, for a reference codebook with a rank higher than 4, the reference codebook CQI for the differential CQI is the CQI associated with the first codeword or the second codeword. In some cases, when there are relatively few antenna ports, using the first CQI as a reference may result in a difference of more than 2, or negative 1 or less (≤-1). In such cases, the UE 115-a may select whether to use the first CQI or the second CQI as a reference CQI for each codebook configuration and may indicate the selection to the network entity 105-a (e.g., as part of CSI part 1).

[0083] Figure 3 An example of a CSI reporting configuration 300 that supports techniques for reporting channel quality for dynamic antenna port adaptation in accordance with one or more aspects of the present disclosure is illustrated. Figure 3 It can be a reference such as Figure 1 and Figure 2 An example of the CSI reporting configuration discussed. For example, Figure 3 A CSI reporting configuration 300 is illustrated that may support differential reporting techniques as discussed herein.

[0084] In this example, a network entity (e.g., network entity 105) may provide CSI report configuration information 305 to a device (e.g., UE 115) that is to measure one or more CSI-RS and provide one or more CSI reports based on such measurements. In this example, the CSI report configuration information 305 may provide a non-zero power (NZP) CSI-RS resource configuration 310 for channel measurement, which may include one or more NZP channel measurement resources (CMRs) 320. One or more NZP-CMR resource sets 315. The CSI report configuration information 305 may also provide a CSI-RS resource configuration for interference measurement (IM) 325, which may include one or more CSI-IM resource sets 330 with associated CSI-IM resources 335, which have resource associations with the NZP CMR resources 320. The CSI reporting configuration information 305 may also provide an NZP CSI-RS resource configuration for interference measurement 340, which may include one or more NZP IM resource sets 345 with associated NZP IM resources 350 (eg, where each CSI-IM resource 350 is associated with all NZP IM resources 335).

[0085] The CSI report configuration information 305 also provides a codebook configuration 355, which may include a codebook type 360. In addition, for each codebook type 360, antenna configurations (e.g., N1, N2; or Ng, N1, N2), beam restrictions, and a rank indicator (RI) restriction 365. The CSI report configuration information 305 may also provide a report configuration type 370, such as periodic CSI reporting, semi-persistent CSI reporting, or aperiodic CSI reporting. The CSI report configuration information 305 may be RRC configured per BWP. As discussed, the CSI report configuration 300 may include multiple different resource sets, where a resource set has Ks resources with the same number of CSI-RS ports. In some cases, for Ks = 1, each resource contains at most 32 CSI-RS ports; for Ks = 2, each resource contains at most 16 CSI-RS ports; for 2 < Ks ≤ 8, each resource contains at most 8 CSI-RS ports. As discussed herein, in some cases, multiple codebooks may be configured for CSI reporting, where different codebooks have different antenna configurations. For example, this may support dynamic antenna adaptation. For example, a network entity may receive a CSI report and determine one or more communication parameters (e.g., modulation and coding scheme, transmit power, etc.) based on the CSI report for a codebook associated with the currently active set of antenna ports. According to various aspects discussed herein, a CSI report for one or more codebooks may be provided, the CSI report including one or more CSI parameters (e.g., CQI) of a first codebook and one or more differential parameters of a second codebook, the one or more differential parameters indicating the difference between the CSI parameters of the first codebook and the CSI parameters of the second codebook.

[0086] Figure 4 An example of an antenna panel configuration 400 that illustrates techniques for supporting reporting of channel quality for dynamic antenna port adaptation in accordance with one or more aspects of the present disclosure is provided. Figure 4 May be examples of different antenna panel configurations, where CSI parameters may be reported as referred to Figures 1 to 3 discussed.

[0087] In this example, a network entity (e.g., network entity 105) may switch between a first multi-panel configuration 405 and a second multi-panel configuration 410 using dynamic antenna port adaptation techniques. The first multi-panel configuration 405 in this example includes a first antenna panel 415 and a second antenna panel 420 (e.g., which may be separate physical panels or may be sub-panels of a larger antenna panel). In this example, in the first multi-panel configuration 405, the first antenna panel 415 may have a first active antenna port set 425, and the second antenna panel 420 may have a second active antenna port set 430. Therefore, the first multi-panel configuration 405 may have Ng=2 (i.e., the number of active antenna panels), N1=4 (i.e., four columns of antenna ports), and N2=2 (i.e., two rows of antenna ports). The second multi-panel configuration 410 may provide that the first antenna panel 415 may have a third active antenna port set 435, in which one row of antenna elements in the multiple rows of antenna elements is not used, and the second antenna panel 420 may have a fourth active antenna port set 440, in which one row of antenna elements in the multiple rows of antenna elements is not used. Therefore, the second multi-panel configuration 410 may have Ng=2, N1=4, and N2=1 (i.e., one row of antenna ports). The network entity may provide a CSI report configuration with a codebook that supports such different antenna element configurations (e.g., for different Ng, N1, N2 values), and may configure a corresponding number of CSI-RS antenna ports per resource (e.g., for cross-polarized antenna element configurations 2·Ng·N1·N2). The UE may measure the associated CSI-RS based on the CSI report configuration and provide CSI parameters, wherein the CSI parameters for one or more of the codebooks are reported as differential values ​​from corresponding values ​​of the first codebook (e.g., the reference codebook).

[0088] Figure 5 An example of a CSI framework 500 for dynamic antenna port adaptation supporting techniques for reporting channel quality for dynamic antenna port adaptation in accordance with one or more aspects of the present disclosure is illustrated. Figure 5 It can be a reference such as Figures 1 to 4 An example of a CSI framework for CSI reporting configuration is discussed. For example, Figure 5 A CSI framework 500 is illustrated that may support differential reporting techniques as discussed herein.

[0089] In this example, a network entity (e.g., network entity 105) may provide CSI report configuration information 505, which may include a resource setting 510 indicating a CSI-RS resource 515 (e.g., a 32-port CSI resource). The CSI report configuration information 505 may include a codebook configuration 520, which may include a plurality of codebooks 525, each of which is associated with an antenna port configuration (e.g., (N1, N2), a beam restriction, and an RI restriction). For example, a first codebook 530 may have an (N1, N2) value (4, 4) and a first beam restriction and an RI restriction, a second codebook 535 may have an (N1, N2) value (2, 1) and a second beam restriction and an RI restriction, a third codebook 540 may have an (N1, N2) value (2, 2) and a third beam restriction and an RI restriction, and a fourth codebook 545 may have an (N1, N2) value (4, 2) and a fourth beam restriction and an RI restriction. In some cases, resources for CSI measurement may be shared between configured codebooks. Based on the configured codebooks 525 and the amount of codebooks to be reported, the UE may send a CSI report containing CSI associated with the codebooks to be reported. For example, the UE may calculate the CSI for each codebook and rank the CSI (e.g., based on spectral efficiency), and then report a higher level CSI or subset of the higher level CSI in the same CSI report. As discussed herein, in some cases, one or more CSI may be reported as a differential value from a reference CSI.

[0090] Figure 6 An example of a process flow 600 supporting techniques for reporting channel quality for dynamic antenna port adaptation according to one or more aspects of the present disclosure is illustrated. The process flow 600 may include reference Figures 1 to 5 For example, process flow 600 may illustrate communication between UE 115-b and network entity 105-b, which may be as described in reference Figure 1 and Figure 2 Examples of corresponding devices described. The following alternative examples can be implemented, in which some steps are performed in a different order than described or not performed at all. In some cases, the steps may include additional features not mentioned below, or further steps may be added.

[0091] At 605, the network entity 105-b may send configuration information, and the UE 115-b may receive the configuration information. In some cases, the configuration information may include a CSI reporting configuration, which may indicate a channel state information resource set and two or more codebooks for multiple antenna port sets associated with the channel state information resource set. In some cases, the two or more codebooks include at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set.

[0092] At 610, the network entity 105-b may transmit one or more CSI-RS (eg, for M t 1 antenna ports), and UE 115-b may receive one or more CSI-RS. At 615, UE 115-b may perform CSI measurements for CSI-RS transmission. At 620, UE 115-b may perform downlink channel estimation based on the CSI measurements. At 625, UE 115-b performs CSI calculations for multiple codebooks, and at 630, UE 115-b may determine RI / PMI / CQI for each codebook. In some cases, CSI calculations and RI / PMI / CQI determinations may be performed by estimating the channel matrix (H) as M r ×M t To execute, where M r is the number of receive antenna ports and M t is the number of transmit antenna ports. The associated codebook from rank-1 to rank-R can be:

[0093] {{P 1 (0),…,P 1 (L 1 -1)},…,{P R (0),…,P R (L R -1)}}.

[0094] The precoding and rank selection for a given codebook can be determined as

[0095] (R * ,i * ) = argmax r,i SE est (H,P r (i))

[0096] Among them, SE est (H,P r (o)) is given H and P r (i) , and the highest rank is R * And the highest pre-decoder The CQI calculation can be conditioned on the highest rank and pre-decoder, such as

[0097] At 635, UE 115-b may determine one or more differential CSI reports. As discussed herein, in some cases, one or more differential CSI reports may be determined and may indicate a difference between CSI parameters of a first codebook or a reference codebook and a second codebook. In some cases, the differential CSI report may indicate a supplemental differential CQI based on an offset level from a corresponding CQI of the first codebook or the reference codebook, as shown in Table 1. In such cases, two bits may be used to indicate a differential CQI corresponding to an amount of difference in the CQI of the first codebook or the reference codebook.

[0098] Supplementary Differential CQI Offset Level 0 0 1 1 2 ≥2 3 ≤-1

[0099] Table 1 - Differential CQI and corresponding offset levels

[0100] At 640, the UE 115-b may send a CSI report to the network entity 105-b. In some cases, the CSI report may include a first CSI parameter set (e.g., CQI) and a differential CSI parameter set, the differential CSI parameter set indicating a difference between corresponding CSI parameters in the second CSI parameter set and the first CSI parameter set. At 645, the network entity 105-b may perform scheduling and determination of a rank, a precoding matrix, and an MCS for the UE 115-b based on the CSI report. At 650, the network entity 105-b may send control channel information and shared channel information (e.g., via a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH)), wherein the transmitted transmission parameters are based at least in part on the CSI report. In some cases, the network entity 105-b may dynamically change the antenna ports used for different transmissions and may indicate the corresponding transmission parameters based on the CSI report.

[0101] Figure 7 A block diagram 700 of a device 705 supporting techniques for reporting channel quality for dynamic antenna port adaptation according to one or more aspects of the present disclosure is shown. The device 705 may be an example of aspects of a UE 115 as described herein. The device 705 may include a receiver 710, a transmitter 715, and a communication manager 720. The device 705 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0102] The receiver 710 may provide means for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, information channels related to techniques for reporting channel quality for dynamic antenna port adaptation). The information may be communicated to other components of the device 705. The receiver 710 may utilize a single antenna or a collection of multiple antennas.

[0103] The transmitter 715 may provide means for transmitting signals generated by other components of the device 705. For example, the transmitter 715 may transmit information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, information channels related to techniques for reporting channel quality for dynamic antenna port adaptation). In some examples, the transmitter 715 may be co-located with the receiver 710 in a transceiver module. The transmitter 715 may utilize a single antenna or a collection of multiple antennas.

[0104] The communication manager 720, the receiver 710, the transmitter 715, or various combinations thereof, or various components thereof may be examples of means for performing various aspects of the techniques for reporting channel quality for dynamic antenna port adaptation as described herein. For example, the communication manager 720, the receiver 710, the transmitter 715, or various combinations thereof, or components thereof may support methods for performing one or more of the functions described herein.

[0105] In some examples, the communication manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuit). The hardware may include a processor, a digital signal processor (DSP), a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof that is configured to or otherwise supports components for performing the functions described in the present disclosure. In some examples, the processor and a memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by executing instructions stored in the memory by the processor).

[0106] Additionally or alternatively, in some examples, the communication manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be implemented in code executed by a processor (e.g., as communication management software or firmware). If implemented in code executed by a processor, the functionality of the communication manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be performed by a general purpose processor (e.g., configured as or otherwise supporting components for performing the functions described in the present disclosure), a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices.

[0107] In some examples, the communication manager 720 can be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise cooperating with the receiver 710, the transmitter 715, or both. For example, the communication manager 720 can receive information from the receiver 710, transmit information to the transmitter 715, or integrate with the receiver 710, the transmitter 715, or both to obtain information, output information, or perform various other operations as described herein.

[0108] According to the examples disclosed herein, the communication manager 720 may support wireless communication at the UE. For example, the communication manager 720 may be configured to or otherwise support a component for receiving a CSI report configuration, the CSI report configuration including a CSI resource set and a set of multiple codebooks for an antenna port set in a plurality of antenna port sets associated with the CSI resource set, wherein the set of multiple codebooks includes at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set. The communication manager 720 may be configured to or otherwise support a component for identifying a first CSI parameter set associated with the first codebook. The communication manager 720 may be configured to or otherwise support a component for identifying a second CSI parameter set associated with the second codebook. The communication manager 720 may be configured to or otherwise support a component for sending a CSI report including a first CSI parameter set and a third differential CSI parameter set, wherein the third differential CSI parameter set indicates a difference between corresponding CSI parameters in the second CSI parameter set and the first CSI parameter set.

[0109] By including or configuring the communication manager 720 according to the examples described herein, the device 705 (e.g., a processor controlling the receiver 710, the transmitter 715, the communication manager 720, or a combination thereof or otherwise coupled thereto) may support techniques for differential CSI reporting that provide reduced overhead associated with reporting of multiple CSI parameter sets, thereby reducing power consumption and improving network efficiency while allowing dynamic antenna port adaptation for network energy reduction.

[0110] Figure 8 A block diagram 800 of a device 805 supporting techniques for reporting channel quality for dynamic antenna port adaptation according to one or more aspects of the present disclosure is shown. The device 805 may be an example of aspects of the device 705 or UE 115 as described herein. The device 805 may include a receiver 810, a transmitter 815, and a communication manager 820. The device 805 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0111] The receiver 810 may provide means for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, information channels related to techniques for reporting channel quality for dynamic antenna port adaptation). The information may be communicated to other components of the device 805. The receiver 810 may utilize a single antenna or a collection of multiple antennas.

[0112] The transmitter 815 may provide means for transmitting signals generated by other components of the device 805. For example, the transmitter 815 may transmit information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, information channels related to techniques for reporting channel quality for dynamic antenna port adaptation). In some examples, the transmitter 815 may be co-located with the receiver 810 in a transceiver module. The transmitter 815 may utilize a single antenna or a collection of multiple antennas.

[0113] The device 805 or its various components may be examples of components for performing various aspects of the techniques for reporting channel quality for dynamic antenna port adaptation as described herein. For example, the communication manager 820 may include a CSI configuration manager 825, a CSI determination manager 830, a CSI reporting manager 835, or any combination thereof. The communication manager 820 may be an example of various aspects of the communication manager 720 as described herein. In some examples, the communication manager 820 or its various components may be configured to use or otherwise cooperate with the receiver 810, the transmitter 815, or both to perform various operations (e.g., receive, obtain, monitor, output, send). For example, the communication manager 820 may receive information from the receiver 810, transmit information to the transmitter 815, or be integrated with the receiver 810, the transmitter 815, or both to obtain information, output information, or perform various other operations as described herein.

[0114] According to examples as disclosed herein, the communication manager 820 may support wireless communication at a UE. The CSI configuration manager 825 may be configured to or otherwise support a component for receiving a CSI report configuration, the CSI report configuration including a CSI resource set and a set of multiple codebooks for multiple antenna port sets associated with the CSI resource set, wherein the set of multiple codebooks includes at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set. The CSI determination manager 830 may be configured to or otherwise support a component for identifying a first CSI parameter set associated with a first codebook. The CSI determination manager 830 may be configured to or otherwise support a component for identifying a second CSI parameter set associated with a second codebook. The CSI report manager 835 may be configured to or otherwise support a component for sending a CSI report including a first CSI parameter set and a third differential CSI parameter set, wherein the third differential CSI parameter set indicates a difference between corresponding CSI parameters in the second CSI parameter set and the first CSI parameter set.

[0115] Fig. 9A block diagram 900 of a communication manager 920 supporting techniques for reporting channel quality for dynamic antenna port adaptation according to one or more aspects of the present disclosure is shown. The communication manager 920 may be an example of aspects of the communication manager 720, the communication manager 820, or both as described herein. The communication manager 920 or its various components may be examples of components for performing various aspects of the techniques for reporting channel quality for dynamic antenna port adaptation as described herein. For example, the communication manager 920 may include a CSI configuration manager 925, a CSI determination manager 930, a CSI reporting manager 935, a differential CSI manager 940, a CSI codebook manager 945, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0116] According to the examples disclosed herein, the communication manager 920 may support wireless communication at the UE. The CSI configuration manager 925 may be configured to or otherwise support a component for receiving a CSI report configuration, the CSI report configuration including a CSI resource set and a set of multiple codebooks for an antenna port set in a plurality of antenna port sets associated with the CSI resource set, wherein the set of multiple codebooks includes at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set. The CSI determination manager 930 may be configured to or otherwise support a component for identifying a first CSI parameter set associated with a first codebook. In some examples, the CSI determination manager 930 may be configured to or otherwise support a component for identifying a second CSI parameter set associated with a second codebook. The CSI report manager 935 may be configured to or otherwise support a component for sending a CSI report including a first CSI parameter set and a third differential CSI parameter set, wherein the third differential CSI parameter set indicates a difference between corresponding CSI parameters in the second CSI parameter set and the first CSI parameter set.

[0117] In some examples, the differential CSI manager 940 may be configured to or otherwise support components for determining a third set of differential CSI parameters based on an offset level between a second channel quality indicator (CQI) of the second codebook and an index value of a first CQI of the first codebook. In some examples, the offset level indicates a range in a set of ranges for a difference between the second CQI and the first CQI. In some examples, the index values ​​of the first CQI and the second CQI indicate CQI values.

[0118] In some examples, the CSI codebook manager 945 may be configured to or otherwise support a component for selecting a first codebook from a set of multiple codebooks based on the number of antenna ports associated with each codebook in the set of multiple codebooks. In some examples, the CSI codebook manager 945 may be configured to or otherwise support a component for selecting a first codebook from a set of multiple codebooks based on the number of antenna port columns or the number of antenna port rows associated with each codebook in the set of multiple codebooks. In some examples, the CSI codebook manager 945 may be configured to or otherwise support a component for selecting a first codebook from a set of multiple codebooks based on an index value associated with a list of sets in multiple antenna port sets associated with a CSI resource set. In some examples, the first codebook corresponds to a base codebook associated with a CSI resource set indicated in a CSI report configuration. In some examples, the CSI report includes an indication of an index value associated with the first codebook. In some examples, the CSI report configuration also includes an identification of which codebook in the set of multiple codebooks corresponds to the first codebook.

[0119] In some examples, the first CSI parameter set includes a first CQI associated with a first downlink channel codeword and a second CQI associated with a second downlink channel codeword, and wherein the third differential CSI parameter set indicates a difference between a third CQI associated with the second CSI parameter set and one of the first CQI or the second CQI. In some examples, wherein the third differential CSI parameter set indicates a difference between the third CQI and the first CQI, and wherein the second CQI is reported as a differential value from the first CQI.

[0120] Fig.10 A diagram of a system 1000 including a device 1005 supporting techniques for reporting channel quality for dynamic antenna port adaptation according to one or more aspects of the present disclosure is shown. The device 1005 may be an example of a device 705, a device 805, or a UE 115 as described herein, or include components thereof. The device 1005 may communicate (e.g., wirelessly) with one or more network entities 105, one or more UEs 115, or any combination thereof. The device 1005 may include components for two-way voice and data communications, including components for sending and receiving communications, such as a communication manager 1020, an input / output (I / O) controller 1010, a transceiver 1015, an antenna 1025, a memory 1030, a code 1035, and a processor 1040. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 1045).

[0121] I / O controller 1010 can manage input signals and output signals of device 1005. I / O controller 1010 can also manage peripheral devices that are not integrated into device 1005. In some cases, I / O controller 1010 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 1010 can utilize an operating system, such as or another known operating system. Additionally or alternatively, I / O controller 1010 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 1010 may be implemented as part of a processor (such as processor 1040). In some cases, a user may interact with device 1005 via I / O controller 1010 or via hardware components controlled by I / O controller 1010.

[0122] In some cases, the device 1005 may include a single antenna 1025. However, in some other cases, the device 1005 may have more than one antenna 1025, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 1015 may communicate bidirectionally via one or more antennas 1025, a wired or wireless link, as described herein. For example, the transceiver 1015 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1015 may also include a modem for: modulating packets; providing the modulated packets to one or more antennas 1025 for transmission; and demodulating packets received from one or more antennas 1025. The transceiver 1015 or the transceiver 1015 and one or more antennas 1025 may be examples of transmitters 715, transmitters 815, receivers 710, receivers 810, or any combination thereof or components thereof as described herein.

[0123] The memory 1030 may include random access memory (RAM) and read-only memory (ROM). The memory 1030 may store computer-readable, computer-executable code 1035 including instructions that, when executed by the processor 1040, cause the device 1005 to perform various functions described herein. The code 1035 may be stored in a non-transitory computer-readable medium, such as a system memory or another type of memory. In some cases, the code 1035 may not be directly executable by the processor 1040, but may (e.g., when compiled and executed) cause the computer to perform the functions described herein. In some cases, the memory 1030 may also contain, among other things, a basic I / O system (BIOS) that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0124] The processor 1040 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 1040 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into the processor 1040. The processor 1040 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1030) to cause the device 1005 to perform various functions (e.g., various functions or tasks supporting techniques for reporting channel quality for dynamic antenna port adaptation). For example, the device 1005 or a component of the device 1005 may include a processor 1040 and a memory 1030 coupled to or to the processor 1040, and the processor 1040 and the memory 1030 are configured to perform the various functions described herein.

[0125] According to the examples disclosed herein, the communication manager 1020 may support wireless communication at a UE. For example, the communication manager 1020 may be configured to or otherwise support a component for receiving a CSI report configuration, the CSI report configuration including a CSI resource set and a set of multiple codebooks for an antenna port set in a plurality of antenna port sets associated with the CSI resource set, wherein the set of multiple codebooks includes at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set. The communication manager 1020 may be configured to or otherwise support a component for identifying a first CSI parameter set associated with the first codebook. The communication manager 1020 may be configured to or otherwise support a component for identifying a second CSI parameter set associated with the second codebook. The communication manager 1020 may be configured to or otherwise support a component for sending a CSI report including a first CSI parameter set and a third differential CSI parameter set, wherein the third differential CSI parameter set indicates a difference between corresponding CSI parameters in the second CSI parameter set and the first CSI parameter set.

[0126] By including or configuring the communication manager 1020 according to the examples described herein, the device 1005 can support techniques for differential CSI reporting that provide reduced overhead associated with reporting of multiple CSI parameter sets, thereby reducing power consumption and improving network efficiency while allowing dynamic antenna port adaptation for network energy reduction.

[0127] In some examples, the communication manager 1020 may be configured to perform various operations (e.g., receive, monitor, transmit) using or otherwise cooperating with the transceiver 1015, one or more antennas 1025, or any combination thereof. Although the communication manager 1020 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 1020 may be supported or performed by the processor 1040, the memory 1030, the code 1035, or any combination thereof. For example, the code 1035 may include instructions that are executable by the processor 1040 to cause the device 1005 to perform various aspects of the techniques for reporting channel quality for dynamic antenna port adaptation as described herein, or the processor 1040 and the memory 1030 may be otherwise configured to perform or support such operations.

[0128] Fig.11 A block diagram 1100 of a device 1105 supporting techniques for reporting channel quality for dynamic antenna port adaptation according to one or more aspects of the present disclosure is shown. The device 1105 may be an example of aspects of the network entity 105 as described herein. The device 1105 may include a receiver 1110, a transmitter 1115, and a communication manager 1120. The device 1105 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0129] The receiver 1110 may provide means for obtaining (e.g., receiving, determining, identifying) information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack), such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units). The information may be passed to other components of the device 1105. In some examples, the receiver 1110 may support obtaining information by receiving signals via one or more antennas. Additionally or alternatively, the receiver 1110 may support obtaining information by receiving signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof.

[0130] The transmitter 1115 may provide a means for outputting (e.g., sending, providing, conveying, transmitting) information generated by other components of the device 1105. For example, the transmitter 1115 may output information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units). In some examples, the transmitter 1115 may support outputting information by sending signals via one or more antennas. Additionally or alternatively, the transmitter 1115 may support outputting information by sending signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 1115 and the receiver 1110 may be co-located in a transceiver, which may include a modem or be coupled to a modem.

[0131] The communication manager 1120, the receiver 1110, the transmitter 1115, or various combinations thereof, or various components thereof may be examples of means for performing various aspects of the techniques for reporting channel quality for dynamic antenna port adaptation as described herein. For example, the communication manager 1120, the receiver 1110, the transmitter 1115, or various combinations thereof, or components thereof may support methods for performing one or more of the functions described herein.

[0132] In some examples, the communication manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuit). The hardware may include a processor, a DSP, a CPU, an ASIC, an FPGA or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof that is configured as or otherwise supports components for performing the functions described in the present disclosure. In some examples, a processor and a memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by executing instructions stored in the memory by the processor).

[0133] Additionally or alternatively, in some examples, the communication manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may be implemented in code executed by a processor (e.g., as communication management software or firmware). If implemented in code executed by a processor, the functionality of the communication manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may be performed by a general purpose processor (e.g., configured as or otherwise supporting components for performing the functions described in the present disclosure), a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices.

[0134] In some examples, communication manager 1120 may be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise cooperating with receiver 1110, transmitter 1115, or both. For example, communication manager 1120 may receive information from receiver 1110, transmit information to transmitter 1115, or be integrated in conjunction with receiver 1110, transmitter 1115, or both to obtain information, output information, or perform various other operations as described herein.

[0135] According to examples as disclosed herein, the communication manager 1120 may support wireless communication at a network entity. For example, the communication manager 1120 may be configured to or otherwise support a component for sending a CSI report configuration to a UE, the CSI report configuration including a CSI resource set and a set of multiple codebooks for multiple antenna port sets associated with the CSI resource set, wherein the set of multiple codebooks includes at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set. The communication manager 1120 may be configured to or otherwise support a component for sending one or more reference signals via the CSI resource set. The communication manager 1120 may be configured to or otherwise support a component for receiving a CSI report from the UE based on one or more reference signals, the CSI report including a first CSI parameter set associated with the first codebook and a third differential CSI parameter set associated with the second codebook, wherein the third differential CSI parameter set indicates a difference between corresponding CSI parameters in the second CSI parameter set and the first CSI parameter set.

[0136] By including or configuring the communication manager 1120 according to the examples described herein, the device 1105 (e.g., a processor controlling the receiver 1110, the transmitter 1115, the communication manager 1120, or a combination thereof or otherwise coupled thereto) may support techniques for differential CSI reporting that provide reduced overhead associated with reporting of multiple CSI parameter sets, thereby reducing power consumption and improving network efficiency while allowing dynamic antenna port adaptation for network energy reduction.

[0137] Fig.12 A block diagram 1200 of a device 1205 supporting techniques for reporting channel quality for dynamic antenna port adaptation according to one or more aspects of the present disclosure is shown. The device 1205 may be an example of aspects of the device 1105 or network entity 105 as described herein. The device 1205 may include a receiver 1210, a transmitter 1215, and a communication manager 1220. The device 1205 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0138] The receiver 1210 may provide means for obtaining (e.g., receiving, determining, identifying) information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack), such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units). The information may be passed to other components of the device 1205. In some examples, the receiver 1210 may support obtaining information by receiving signals via one or more antennas. Additionally or alternatively, the receiver 1210 may support obtaining information by receiving signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof.

[0139] The transmitter 1215 may provide a means for outputting (e.g., sending, providing, conveying, transmitting) information generated by other components of the device 1205. For example, the transmitter 1215 may output information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units). In some examples, the transmitter 1215 may support outputting information by sending signals via one or more antennas. Additionally or alternatively, the transmitter 1215 may support outputting information by sending signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 1215 and the receiver 1210 may be co-located in a transceiver, which may include a modem or be coupled to a modem.

[0140] The device 1205 or its various components may be examples of components for performing various aspects of the techniques for reporting channel quality for dynamic antenna port adaptation as described herein. For example, the communication manager 1220 may include a CSI configuration manager 1225, a CSI-RS manager 1230, a CSI reporting manager 1235, or any combination thereof. The communication manager 1220 may be an example of various aspects of the communication manager 1120 as described herein. In some examples, the communication manager 1220 or its various components may be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise cooperating with the receiver 1210, the transmitter 1215, or both. For example, the communication manager 1220 may receive information from the receiver 1210, transmit information to the transmitter 1215, or be integrated in combination with the receiver 1210, the transmitter 1215, or both to obtain information, output information, or perform various other operations as described herein.

[0141] According to examples as disclosed herein, the communication manager 1220 may support wireless communication at a network entity. The CSI configuration manager 1225 may be configured to or otherwise support a component for sending a CSI report configuration to a UE, the CSI report configuration comprising a CSI resource set and a set of multiple codebooks for multiple antenna port sets associated with the CSI resource set, wherein the set of multiple codebooks includes at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set. The CSI-RS manager 1230 may be configured to or otherwise support a component for sending one or more reference signals via the CSI resource set. The CSI report manager 1235 may be configured to or otherwise support a component for receiving a CSI report from the UE based on one or more reference signals, the CSI report comprising a first CSI parameter set associated with the first codebook and a third differential CSI parameter set associated with the second codebook, wherein the third differential CSI parameter set indicates a difference between corresponding CSI parameters in the second CSI parameter set and the first CSI parameter set.

[0142] Fig.13A block diagram 1300 of a communication manager 1320 supporting techniques for reporting channel quality for dynamic antenna port adaptation according to one or more aspects of the present disclosure is shown. The communication manager 1320 may be an example of aspects of the communication manager 1120, the communication manager 1220, or both as described herein. The communication manager 1320 or its various components may be examples of means for performing various aspects of the techniques for reporting channel quality for dynamic antenna port adaptation as described herein. For example, the communication manager 1320 may include a CSI configuration manager 1325, a CSI-RS manager 1330, a CSI reporting manager 1335, a differential CSI manager 1340, a CSI codebook manager 1345, a CSI determination manager 1350, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses), which communication may include communication within a protocol layer of a protocol stack, communication associated with a logical channel of the protocol stack (e.g., between protocol layers of a protocol stack, within a device, component, or virtualized component associated with the network entity 105, between devices, components, or virtualized components associated with the network entity 105), or any combination thereof.

[0143] According to examples as disclosed herein, the communication manager 1320 may support wireless communication at a network entity. The CSI configuration manager 1325 may be configured to or otherwise support a component for sending a CSI report configuration to a UE, the CSI report configuration comprising a CSI resource set and a set of multiple codebooks for an antenna port set in a plurality of antenna port sets associated with the CSI resource set, wherein the set of multiple codebooks comprises at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set. The CSI-RS manager 1330 may be configured to or otherwise support a component for sending one or more reference signals via the CSI resource set. The CSI report manager 1335 may be configured to or otherwise support a component for receiving a CSI report from a UE based on one or more reference signals, the CSI report comprising a first CSI parameter set associated with a first codebook and a third differential CSI parameter set associated with a second codebook, wherein the third differential CSI parameter set indicates a difference between corresponding CSI parameters in the second CSI parameter set and the first CSI parameter set.

[0144] In some examples, the differential CSI manager 1340 may be configured to or otherwise support a component for determining a second set of CSI parameters based on an offset level between a second channel quality indicator (CQI) of the second codebook and an index value of a first CQI of the first codebook, the offset level being provided in a third set of differential CSI parameters. In some examples, the offset level indicates a range in a set of ranges for a difference between the second CQI and the first CQI. In some examples, the index values ​​of the first CQI and the second CQI indicate CQI values.

[0145] In some examples, the CSI codebook manager 1345 may be configured to or otherwise support a component for selecting a first codebook from a set of multiple codebooks based on the number of antenna ports associated with each codebook in the set of multiple codebooks. In some examples, the CSI codebook manager 1345 may be configured to or otherwise support a component for selecting a first codebook from a set of multiple codebooks based on the number of antenna port columns or the number of antenna port rows associated with each codebook in the set of multiple codebooks. In some examples, the CSI codebook manager 1345 may be configured to or otherwise support a component for selecting a first codebook from a set of multiple codebooks based on an index value associated with a list of sets in multiple antenna port sets associated with a CSI resource set. In some examples, the first codebook corresponds to a base codebook associated with a CSI resource set indicated in a CSI report configuration. In some examples, the CSI report includes an indication of an index value associated with the first codebook. In some examples, the CSI report configuration also includes an identification of which codebook in the set of multiple codebooks corresponds to the first codebook.

[0146] In some examples, the first CSI parameter set includes a first CQI associated with a first downlink channel codeword and a second CQI associated with a second downlink channel codeword, and wherein the third differential CSI parameter set indicates a difference between a third CQI associated with the second CSI parameter set and one of the first CQI or the second CQI. In some examples, wherein the third differential CSI parameter set indicates a difference between the third CQI and the first CQI, and wherein the second CQI is reported as a differential value from the first CQI.

[0147] Fig.14A diagram of a system 1400 including a device 1405 supporting techniques for reporting channel quality for dynamic antenna port adaptation according to one or more aspects of the present disclosure is shown. The device 1405 may be an example of a device 1105, a device 1205, or a network entity 105 as described herein, or include components thereof. The device 1405 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof, which communication may include communication through one or more wired interfaces, through one or more wireless interfaces, or any combination thereof. The device 1405 may include components that support output and acquisition of communications, such as a communication manager 1420, a transceiver 1410, an antenna 1415, a memory 1425, a code 1430, and a processor 1435. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., bus 1440).

[0148] The transceiver 1410 may support bidirectional communication via a wired link, a wireless link, or both as described herein. In some examples, the transceiver 1410 may include a wired transceiver and may communicate bidirectionally with another wired transceiver. Additionally or alternatively, in some examples, the transceiver 1410 may include a wireless transceiver and may communicate bidirectionally with another wireless transceiver. In some examples, the device 1405 may include one or more antennas 1415, which may be capable of sending or receiving wireless transmissions (e.g., concurrently). The transceiver 1410 may also include a modem for: modulating a signal; providing the modulated signal for transmission (e.g., via one or more antennas 1415, via a wired transmitter); receiving a modulated signal (e.g., from one or more antennas 1415, from a wired receiver); and demodulating a signal. In some implementations, the transceiver 1410 may include one or more interfaces, such as one or more interfaces coupled to one or more antennas 1415 configured to support various receiving or obtaining operations or one or more interfaces coupled to one or more antennas 1415 configured to support various sending or outputting operations, or a combination thereof. In some implementations, the transceiver 1410 may include or be configured to be coupled to one or more processors or memory components that are operable to perform the following operations: perform or support operations based on received or obtained information or signals; or generate information or other signals for transmission or other output, or any combination thereof. In some implementations, the transceiver 1410, or the transceiver 1410 and one or more antennas 1415, or the transceiver 1410 and one or more antennas 1415 and one or more processors or memory components (e.g., processor 1435, or memory 1425, or both) may be included in a chip or chip component installed in the device 1405. The transceiver 1410 or transceiver 1410 and one or more antennas 1415 or wired interfaces (where applicable) may be examples of transmitter 1115, transmitter 1215, receiver 1110, receiver 1210, or any combination thereof or components thereof as described herein. In some examples, the transceiver may be operable to support communication via one or more communication links (e.g., communication link 125, backhaul communication link 120, midhaul communication link 162, fronthaul communication link 168).

[0149] Memory 1425 may include RAM and ROM. Memory 1425 may store computer-readable, computer-executable code 1430 including instructions that, when executed by processor 1435, cause device 1405 to perform various functions described herein. Code 1430 may be stored in a non-transitory computer-readable medium, such as system memory or another type of memory. In some cases, code 1430 may not be directly executable by processor 1435, but may (e.g., when compiled and executed) cause a computer to perform the functions described herein. In some cases, memory 1425 may also contain, among other things, a BIOS that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0150] The processor 1435 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA, a microcontroller, a programmable logic device, a discrete gate or transistor logic, a discrete hardware component, or any combination thereof). In some cases, the processor 1435 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into the processor 1435. The processor 1435 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1425) to cause the device 1405 to perform various functions (e.g., various functions or tasks supporting techniques for reporting channel quality for dynamic antenna port adaptation). For example, the device 1405 or a component of the device 1405 may include a processor 1435 and a memory 1425 coupled to the processor 1435, the processor 1435 and the memory 1425 being configured to perform the various functions described herein. Processor 1435 may be an example of a cloud computing platform (e.g., one or more physical nodes and supporting software such as an operating system, a virtual machine, or a container instance) that may host functions for performing functions of device 1405 (e.g., by executing code 1430). Processor 1435 may be any one or more suitable processors capable of executing scripts or instructions of one or more software programs stored in device 1405 (such as in memory 1425). In some specific implementations, processor 1435 may be a component of a processing system. A processing system may generally refer to a system or a series of machines or components that receive inputs and process these inputs to produce an output set (which may be passed to other systems or components of, for example, device 1405). For example, a processing system of device 1405 may refer to a system including various other components or subcomponents of device 1405, such as processor 1435, or transceiver 1410, or communication manager 1420, or other components or combinations of components of device 1405. The processing system of device 1405 may interface with other components of device 1405, and may process information (such as input or signal) received from other components, or output information to other components. For example, a chip or modem of device 1405 may include a processing system and an interface for outputting information or for obtaining information or both. The interface may be implemented as or otherwise include a first interface configured to output information and a second interface configured to obtain information. In some specific implementations, the first interface may refer to an interface between a processing system of a chip or modem and a transmitter, so that device 1405 can send information output from the chip or modem. In some specific implementations, the second interface may refer to an interface between a processing system of a chip or modem and a receiver, so that device 1405 can obtain information or signal input, and the information can be passed to the processing system.Those skilled in the art will readily appreciate that the first interface may also obtain information or signal input, and the second interface may also output information or signal output.

[0151] In some examples, bus 1440 may support communications of protocol layers (e.g., within a protocol layer) of a protocol stack. In some examples, bus 1440 may support communications associated with logical channels of a protocol stack (e.g., between protocol layers of a protocol stack), which may include communications performed within components of device 1405, or communications performed between different components of device 1405 that may be co-located or may be located in different locations (e.g., where device 1405 may refer to a system in which one or more of communication manager 1420, transceiver 1410, memory 1425, code 1430, and processor 1435 may be located in one component or divided between different components).

[0152] In some examples, communication manager 1420 may manage aspects of communications with core network 130 (e.g., via one or more wired or wireless backhaul links). For example, communication manager 1420 may manage delivery of data communications for client devices such as one or more UEs 115. In some examples, communication manager 1420 may manage communications with other network entities 105 and may include a controller or scheduler for controlling communications with UE 115 in collaboration with other network entities 105. In some examples, communication manager 1420 may support an X2 interface within an LTE / LTE-A wireless communication network technology to provide communications between network entities 105.

[0153] According to examples as disclosed herein, the communication manager 1420 may support wireless communication at a network entity. For example, the communication manager 1420 may be configured to or otherwise support a component for sending a CSI report configuration to a UE, the CSI report configuration including a CSI resource set and a set of multiple codebooks for an antenna port set in a plurality of antenna port sets associated with the CSI resource set, wherein the set of multiple codebooks includes at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set. The communication manager 1420 may be configured to or otherwise support a component for sending one or more reference signals via the CSI resource set. The communication manager 1420 may be configured to or otherwise support a component for receiving a CSI report from the UE based on one or more reference signals, the CSI report including a first CSI parameter set associated with the first codebook and a third differential CSI parameter set associated with the second codebook, wherein the third differential CSI parameter set indicates a difference between corresponding CSI parameters in the second CSI parameter set and the first CSI parameter set.

[0154] By including or configuring the communication manager 1420 according to the examples described herein, the device 1405 can support techniques for differential CSI reporting that provide reduced overhead associated with reporting of multiple CSI parameter sets, thereby reducing power consumption and improving network efficiency while allowing dynamic antenna port adaptation for network energy reduction.

[0155] In some examples, the communication manager 1420 may be configured to perform various operations (e.g., receive, obtain, monitor, output, transmit) using or otherwise cooperating with the transceiver 1410, one or more antennas 1415 (e.g., where applicable), or any combination thereof. Although the communication manager 1420 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 1420 may be supported or performed by the processor 1435, the memory 1425, the code 1430, the transceiver 1410, or any combination thereof. For example, the code 1430 may include instructions that are executable by the processor 1435 to cause the device 1405 to perform various aspects of the techniques for reporting channel quality for dynamic antenna port adaptation as described herein, or the processor 1435 and the memory 1425 may be otherwise configured to perform or support such operations.

[0156] Fig.15 A flow chart of a method 1500 supporting techniques for reporting channel quality for dynamic antenna port adaptation according to one or more aspects of the present disclosure is shown. The operations of the method 1500 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1500 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 10 The UE 115 described herein may be executed. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0157] At 1505, the method may include receiving a CSI reporting configuration, the CSI reporting configuration including a CSI resource set and a set of multiple codebooks for an antenna port set in a plurality of antenna port sets associated with the CSI resource set, wherein the set of multiple codebooks includes at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set. The operations of 1505 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1505 may be performed as described in reference to Fig. 9 The CSI configuration manager 925 executes.

[0158] At 1510, the method may include identifying a first CSI parameter set associated with a first codebook. The operations of 1510 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1510 may be performed as described in reference to Fig. 9 The CSI determination manager 930 is used to perform the above-mentioned operation.

[0159] At 1515, the method may include identifying a second CSI parameter set associated with the second codebook. The operations of 1515 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1515 may be performed as described in reference Fig. 9 The CSI determination manager 930 is used to perform the above-mentioned operation.

[0160] At 1520, the method may include sending a CSI report including the first CSI parameter set and a third differential CSI parameter set, wherein the third differential CSI parameter set indicates a difference between corresponding CSI parameters in the second CSI parameter set and the first CSI parameter set. The operations of 1520 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1520 may be performed as described in reference to Fig. 9 The CSI reporting manager 935 is used to execute.

[0161] Fig.16 A flow chart of a method 1600 supporting techniques for reporting channel quality for dynamic antenna port adaptation according to one or more aspects of the present disclosure is shown. The operations of the method 1600 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1600 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 10 The UE 115 described herein may be executed. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0162] At 1605, the method may include receiving a CSI report configuration, the CSI report configuration including a CSI resource set and a set of multiple codebooks for an antenna port set in a plurality of antenna port sets associated with the CSI resource set, wherein the set of multiple codebooks includes at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set. The operations of 1605 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1605 may be performed as described in reference to Fig. 9 The CSI configuration manager 925 executes.

[0163] At 1610, the method may include identifying a first CSI parameter set associated with a first codebook. The operations of 1610 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1610 may be performed as described in reference Fig. 9 The CSI determination manager 930 is used to perform the above-mentioned operation.

[0164] At 1615, the method may include identifying a second CSI parameter set associated with the second codebook. The operations of 1615 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1615 may be performed as described in reference to Fig. 9 The CSI determination manager 930 is used to perform the above-mentioned operation.

[0165] At 1620, the method may include determining a third differential CSI parameter set based on an offset level between a second channel quality indicator (CQI) of the second codebook and an index value of a first CQI of the first codebook. The operations of 1620 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1620 may be performed as described in reference to Fig. 9 The differential CSI manager 940 is used to perform the above operation.

[0166] At 1625, the method may include sending a CSI report including the first CSI parameter set and a third differential CSI parameter set, wherein the third differential CSI parameter set indicates a difference between corresponding CSI parameters in the second CSI parameter set and the first CSI parameter set. The operations of 1625 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1625 may be performed as described in reference to Fig. 9 The CSI reporting manager 935 is used to execute.

[0167] Fig.17 A flow chart of a method 1700 supporting techniques for reporting channel quality for dynamic antenna port adaptation according to one or more aspects of the present disclosure is shown. The operations of the method 1700 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1700 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 10 The UE 115 described herein may be executed. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0168] At 1705, the method may include receiving a CSI report configuration, the CSI report configuration including a CSI resource set and a set of multiple codebooks for an antenna port set in a plurality of antenna port sets associated with the CSI resource set, wherein the set of multiple codebooks includes at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set. The operations of 1705 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1705 may be performed as described in reference to Fig. 9 The CSI configuration manager 925 executes.

[0169] At 1710, the method may include selecting a first codebook from a set of multiple codebooks based on a number of antenna ports associated with each codebook in the set of multiple codebooks. The operations of 1710 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1710 may be performed as described in reference to Fig. 9 The CSI codebook manager 945 may be performed. In some cases, a first codebook may be selected from a set of multiple codebooks based on a number of antenna port columns or a number of antenna port rows associated with each codebook in the set of multiple codebooks. In some cases, a first codebook may be selected from a set of multiple codebooks based on an index value associated with a list of multiple antenna port sets associated with a CSI resource set.

[0170] At 1715, the method may include identifying a first CSI parameter set associated with the first codebook. The operations of 1715 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1715 may be performed as described in reference Fig. 9 The CSI determination manager 930 is used to perform the above-mentioned operation.

[0171] At 1720, the method may include identifying a second CSI parameter set associated with the second codebook. The operations of 1720 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1720 may be performed as described in reference to Fig. 9 The CSI determination manager 930 is used to perform the above-mentioned operation.

[0172] At 1725, the method may include sending a CSI report including the first CSI parameter set and a third differential CSI parameter set, wherein the third differential CSI parameter set indicates a difference between corresponding CSI parameters in the second CSI parameter set and the first CSI parameter set. The operations of 1725 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1725 may be performed as described in reference to Fig. 9 The CSI reporting manager 935 is used to execute.

[0173] Fig.18A flow chart of a method 1800 supporting techniques for reporting channel quality for dynamic antenna port adaptation according to one or more aspects of the present disclosure is shown. The operations of the method 1800 may be implemented by a network entity or a component thereof as described herein. For example, the operations of the method 1800 may be implemented by a network entity or a component thereof as described herein. Figures 1 to 6 as well as Figures 11 to 14 In some examples, the network entity may execute an instruction set to control the functional elements of the network entity to perform the described functions. Additionally or alternatively, the network entity may use dedicated hardware to perform various aspects of the described functions.

[0174] At 1805, the method may include sending a CSI reporting configuration to the UE, the CSI reporting configuration including a CSI resource set and a set of multiple codebooks for an antenna port set in a plurality of antenna port sets associated with the CSI resource set, wherein the set of multiple codebooks includes at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set. The operations of 1805 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1805 may be performed as described in reference to Fig.13 The CSI configuration manager 1325 executes.

[0175] At 1810, the method may include sending one or more reference signals via a CSI resource set. The operations of 1810 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1810 may be performed by Fig.13 The CSI-RS manager 1330 executes.

[0176] At 1815, the method may include receiving a CSI report from the UE based on one or more reference signals, the CSI report including a first CSI parameter set associated with the first codebook and a third differential CSI parameter set associated with the second codebook, wherein the third differential CSI parameter set indicates a difference between corresponding CSI parameters in the second CSI parameter set and the first CSI parameter set. The operations of 1815 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1815 may be performed as described in reference to Fig.13 The CSI reporting manager 1335 is used to execute.

[0177] Fig.19 A flow chart of a method 1900 supporting techniques for reporting channel quality for dynamic antenna port adaptation according to one or more aspects of the present disclosure is shown. The operations of the method 1900 may be implemented by a network entity or a component thereof as described herein. For example, the operations of the method 1900 may be implemented by a network entity or a component thereof as described herein. Figures 1 to 6 as well as Figures 11 to 14In some examples, the network entity may execute an instruction set to control the functional elements of the network entity to perform the described functions. Additionally or alternatively, the network entity may use dedicated hardware to perform various aspects of the described functions.

[0178] At 1905, the method may include sending a CSI reporting configuration to the UE, the CSI reporting configuration including a CSI resource set and a set of multiple codebooks for an antenna port set in a plurality of antenna port sets associated with the CSI resource set, wherein the set of multiple codebooks includes at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set. The operations of 1905 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1905 may be performed as described in reference Fig.13 The CSI configuration manager 1325 executes.

[0179] At 1910, the method may include sending one or more reference signals via a CSI resource set. The operations of 1910 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1910 may be performed by Fig.13 The CSI-RS manager 1330 executes.

[0180] At 1915, the method may include receiving a CSI report from the UE based on one or more reference signals, the CSI report including a first CSI parameter set associated with the first codebook and a third differential CSI parameter set associated with the second codebook, wherein the third differential CSI parameter set indicates a difference between corresponding CSI parameters in the second CSI parameter set and the first CSI parameter set. The operations of 1915 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1915 may be performed as described in reference to Fig.13 The CSI reporting manager 1335 is used to execute.

[0181] At 1920, the method may include determining a second CSI parameter set based on an offset level between a second channel quality indicator (CQI) of the second codebook and an index value of a first CQI of the first codebook, the offset level being provided in a third differential CSI parameter set. The operations of 1920 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1920 may be performed as described in reference to Fig.13 The differential CSI manager 1340 is used to perform the above operation.

[0182] Fig. 20A flow chart of a method 2000 supporting techniques for reporting channel quality for dynamic antenna port adaptation according to one or more aspects of the present disclosure is shown. The operations of the method 2000 may be implemented by a network entity or a component thereof as described herein. For example, the operations of the method 2000 may be implemented by a network entity or a component thereof as described herein. Figures 1 to 6 as well as Figures 11 to 14 In some examples, the network entity may execute an instruction set to control the functional elements of the network entity to perform the described functions. Additionally or alternatively, the network entity may use dedicated hardware to perform various aspects of the described functions.

[0183] At 2005, the method may include sending a CSI reporting configuration to a UE, the CSI reporting configuration including a CSI resource set and a set of multiple codebooks for an antenna port set in a plurality of antenna port sets associated with the CSI resource set, wherein the set of multiple codebooks includes at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set. The operations of 2005 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 2005 may be performed as described in reference to Fig.13 The CSI configuration manager 1325 executes.

[0184] At 2010, the method may include sending one or more reference signals via a CSI resource set. The operations of 2010 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 2010 may be performed by Fig.13 The CSI-RS manager 1330 executes.

[0185] At 2015, the method may include receiving a CSI report from the UE based on one or more reference signals, the CSI report including a first CSI parameter set associated with the first codebook and a third differential CSI parameter set associated with the second codebook, wherein the third differential CSI parameter set indicates a difference between corresponding CSI parameters in the second CSI parameter set and the first CSI parameter set. The operations of 2015 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 2015 may be performed by Fig.13 The CSI reporting manager 1335 is used to execute.

[0186] At 2020, the method may include selecting a first codebook and a second codebook from a plurality of codebooks. The operations of 2020 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 2020 may be performed as described in reference to Fig.13 The CSI codebook manager 1345 is used for execution.

[0187] At 2025, the method may include determining a second CSI parameter set based at least in part on an offset level between the CQI of the second codebook and the index value of the first CQI of the first codebook, the offset level being provided in the third differential CSI parameter set. The operations of 2025 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 2025 may be performed as described in reference to Fig.13 The CSI estimation manager 1345 is used to perform the above operation.

[0188] The following provides an overview of various aspects of the disclosure:

[0189] Aspect 1: A method for performing wireless communications at a UE, the method comprising: receiving a channel state information report configuration, the channel state information report configuration comprising a channel state information resource set and multiple codebooks for multiple antenna port sets associated with the channel state information resource set, wherein the multiple codebooks include at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set; identifying a first channel state information parameter set associated with the first codebook; identifying a second channel state information parameter set associated with the second codebook; and sending a channel state information report, the channel state information report comprising the first channel state information parameter set and a third differential channel state information parameter set, wherein the third differential channel state information parameter set indicates a difference between corresponding channel state information parameters in the second channel state information parameter set and the first channel state information parameter set.

[0190] Aspect 2: The method according to aspect 1 also includes: determining the third differential channel state information parameter set based at least in part on an offset level between an index value of a second channel quality indicator (CQI) of the second codebook and a first CQI of the first codebook.

[0191] Aspect 3: The method according to aspect 2, wherein the offset level indicates a range in a set of ranges of a difference between the second CQI and the first CQI.

[0192] Aspect 4: The method according to any one of aspects 2 to 3, wherein the index values ​​of the first CQI and the second CQI indicate CQI values.

[0193] Aspect 5: The method according to any one of aspects 1 to 4, further comprising: selecting the first codebook from the plurality of codebooks based at least in part on the number of antenna ports associated with each codebook in the plurality of codebooks.

[0194] Aspect 6: The method according to any one of aspects 1 to 5 further includes: selecting the first codebook from the plurality of codebooks based at least in part on the number of antenna port columns or the number of antenna port rows associated with each codebook in the plurality of codebooks.

[0195] Aspect 7: The method according to any one of Aspects 1 to 6 also includes: selecting the first codebook from the multiple codebooks based at least in part on an index value associated with the list of the multiple antenna port sets associated with the channel state information resource set.

[0196] Aspect 8: The method according to any one of Aspects 1 to 7, wherein the first codebook corresponds to a base codebook associated with the channel state information resource set indicated in the channel state information reporting configuration.

[0197] Aspect 9: The method according to any one of aspects 1 to 8, wherein the channel state information report includes an indication of an index value associated with the first codebook.

[0198] Aspect 10: The method according to any one of aspects 1 to 9, wherein the channel state information reporting configuration further includes an identification of which codebook among the multiple codebooks corresponds to the first codebook.

[0199] Aspect 11: A method according to any one of Aspects 1 to 10, wherein the first channel state information parameter set includes a first CQI associated with a first downlink channel codeword and a second CQI associated with a second downlink channel codeword, and wherein the third differential channel state information parameter set indicates a difference between a third CQI associated with the second channel state information parameter set and one of the first CQI or the second CQI.

[0200] Aspect 12: The method according to aspect 11, wherein the third differential channel state information parameter set indicates the difference between the third CQI and the first CQI, and wherein the second CQI is reported as a differential value from the first CQI.

[0201] Aspect 13: A method for performing wireless communications at a network entity, the method comprising: sending a channel state information report configuration to a UE, the channel state information report configuration comprising a channel state information resource set and multiple codebooks for multiple antenna port sets associated with the channel state information resource set, wherein the multiple codebooks include at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set; sending one or more reference signals via the channel state information resource set; and receiving a channel state information report from the UE based at least in part on the one or more reference signals, the channel state information report comprising a first channel state information parameter set associated with the first codebook and a third differential channel state information parameter set associated with the second codebook, wherein the third differential channel state information parameter set indicates a difference between corresponding channel state information parameters in the second channel state information parameter set and the first channel state information parameter set.

[0202] Aspect 14: The method according to Aspect 13 also includes: determining the second channel state information parameter set based at least in part on an offset level between an index value of a second channel quality indicator (CQI) of the second codebook and a first CQI of the first codebook, the offset level being provided in the third differential channel state information parameter set.

[0203] Aspect 15: The method according to aspect 14, wherein the offset level indicates a range in a set of ranges of a difference between the second CQI and the first CQI.

[0204] Aspect 16: The method according to any one of aspects 14 to 15, wherein the index values ​​of the first CQI and the second CQI indicate CQI values.

[0205] Aspect 17: The method according to any one of aspects 13 to 16, further comprising: selecting the first codebook from the plurality of codebooks based at least in part on the number of antenna ports associated with each codebook in the plurality of codebooks.

[0206] Aspect 18: The method according to any one of aspects 13 to 17 further comprises: selecting the first codebook from the plurality of codebooks based at least in part on the number of antenna port columns or the number of antenna port rows associated with each codebook in the plurality of codebooks.

[0207] Aspect 19: The method according to any one of Aspects 13 to 18 further comprises: selecting the first codebook from the plurality of codebooks based at least in part on an index value associated with the list of the plurality of antenna port sets associated with the channel state information resource set.

[0208] Aspect 20: The method according to any one of Aspects 13 to 19, wherein the first codebook corresponds to a base codebook associated with the channel state information resource set indicated in the channel state information reporting configuration.

[0209] Aspect 21: The method according to any one of aspects 13 to 20, wherein the channel state information report comprises an indication of an index value associated with the first codebook.

[0210] Aspect 22: The method according to any one of aspects 13 to 21, wherein the channel state information reporting configuration further comprises an identification of which codebook among the multiple codebooks corresponds to the first codebook.

[0211] Aspect 23: A method according to any one of Aspects 13 to 22, wherein the first channel state information parameter set includes a first CQI associated with a first downlink channel codeword and a second CQI associated with a second downlink channel codeword, and wherein the third differential channel state information parameter set indicates a difference between a third CQI associated with the second channel state information parameter set and one of the first CQI or the second CQI.

[0212] Aspect 24: The method according to aspect 23, wherein the third differential channel state information parameter set indicates a difference between the third CQI and the first CQI, and wherein the second CQI is reported as a differential value from the first CQI.

[0213] Aspect 25: An apparatus for performing wireless communications at a UE, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to any one of Aspects 1 to 12.

[0214] Aspect 26: An apparatus for wireless communication at a UE, the apparatus comprising at least one component for performing the method according to any one of aspects 1 to 12.

[0215] Aspect 27: A non-transitory computer-readable medium storing a code for wireless communication at a UE, the code comprising instructions executable by a processor to perform the method according to any one of aspects 1 to 12.

[0216] Aspect 28: An apparatus for wireless communication at a network entity, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to any one of Aspects 13 to 24.

[0217] Aspect 29: An apparatus for wireless communication at a network entity, the apparatus comprising at least one component for performing a method according to any one of aspects 13 to 24.

[0218] Aspect 30: A non-transitory computer-readable medium storing code for wireless communication at a network entity, the code comprising instructions executable by a processor to perform the method according to any one of aspects 13 to 24.

[0219] It should be noted that the methods described herein describe possible implementations, and that the various operations and steps may be rearranged or otherwise modified and that other implementations are possible. Furthermore, aspects from two or more methods may be combined.

[0220] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for example purposes, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein may also be applicable to networks other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applicable to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0221] The information and signals described herein may be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the specification may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or optical particles, or any combination thereof.

[0222] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or performed with a general purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0223] The functions described herein may be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functions may be stored as one or more instructions or codes of a computer-readable medium, or sent using a computer-readable medium. Other examples and specific implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hard wiring, or a combination of any of these items. Features that implement the functions may also be physically located at different locations, including being distributed so that the various parts of the functions are implemented at different physical locations.

[0224] Computer-readable medium includes both non-transient computer storage medium and communication medium, and it includes any medium that facilitates computer program to be transmitted from one position to another position.Non-transient storage medium can be any available medium that can be accessed by general or special-purpose computer.By way of example and not limitation, non-transient computer-readable medium can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage device, disk storage device or other magnetic storage device, or can be used for carrying or storing desired program code parts and any other non-transient medium that can be accessed by general or special-purpose computer or general or special-purpose processor in the form of instruction or data structure.In addition, any connection is appropriately referred to as computer-readable medium.For example, if software is sent from website, server or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technology such as infrared, radio and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are included in the definition of computer-readable medium. As used herein, disks and discs include CDs, laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs. Disks can reproduce data magnetically, and discs can reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media.

[0225] As used herein (including in the claims), "or" used in a list of items (e.g., a list of items followed by a phrase such as "at least one of" or "one or more of") indicates an inclusive list, so that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). In addition, as used herein, the phrase "based on" should not be interpreted as a reference to a closed set of conditions. For example, an example step described as "based on condition A" can be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on."

[0226] The term "determining" encompasses a variety of actions, and thus, "determining" may include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, database or other data structure), ascertaining, and the like. Furthermore, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data stored in a memory), etc. Additionally, "determining" may include parsing, obtaining, selecting, choosing, establishing, and other such similar actions.

[0227] In the drawings, similar components or features may have the same reference label. In addition, various components of the same type may be distinguished by following the reference label with a dash and a second label to distinguish between similar components. If only the first reference label is used in the specification, the description may apply to any of the similar components having the same first reference label, regardless of the second or other subsequent reference labels.

[0228] The descriptions set forth herein in conjunction with the accompanying drawings describe example configurations and do not represent all examples that may be implemented or within the scope of the claims. The term "example" as used herein means "used as an example, instance, or illustration," rather than "preferred" or "advantageous over other examples." The specific implementation includes specific details to provide an understanding of the described techniques. However, these techniques may be practiced without these specific details. In some cases, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0229] The description herein is provided to enable one of ordinary skill in the art to implement or use the present disclosure. Various modifications to the present disclosure will be apparent to one of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Thus, the present disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a user equipment (UE), the method comprising: receiving a channel state information reporting configuration, the channel state information reporting configuration comprising a channel state information resource set and a plurality of codebooks for a plurality of antenna port sets associated with the channel state information resource set, wherein the plurality of codebooks comprises at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set; Identifying a first channel state information parameter set associated with the first codebook; identifying a second channel state information parameter set associated with the second codebook; as well as Send a channel state information report, the channel state information report including the first channel state information parameter set and a third differential channel state information parameter set, wherein the third differential channel state information parameter set indicates a difference between corresponding channel state information parameters in the second channel state information parameter set and the first channel state information parameter set.

2. The method according to claim 1, further comprising: The third set of differential channel state information parameters is determined based at least in part on an offset level between an index value of a second channel quality indicator (CQI) of the second codebook and a first CQI of the first codebook. 3 . The method according to claim 2 , wherein the offset level indicates a range in a set of ranges of a difference between the second CQI and the first CQI. The method according to claim 2 , wherein the index values ​​of the first CQI and the second CQI indicate CQI values.

5. The method according to claim 1, further comprising: The first codebook is selected from the plurality of codebooks based at least in part on a number of antenna ports associated with each codebook in the plurality of codebooks.

6. The method according to claim 1, further comprising: The first codebook is selected from the plurality of codebooks based at least in part on a number of antenna port columns or a number of antenna port rows associated with each codebook in the plurality of codebooks.

7. The method according to claim 1, further comprising: The first codebook is selected from the plurality of codebooks based at least in part on an index value associated with the list of the plurality of antenna port sets associated with the set of channel state information resources.

8. The method of claim 1, wherein the first codebook corresponds to a base codebook associated with the set of channel state information resources indicated in the channel state information reporting configuration.

9. The method of claim 1, wherein the channel state information report comprises an indication of an index value associated with the first codebook.

10. The method of claim 1, wherein the channel state information reporting configuration further comprises an identification of which codebook among the plurality of codebooks corresponds to the first codebook.

11. The method of claim 1 , wherein the first channel state information parameter set comprises a first channel quality indicator (CQI) associated with a first downlink channel codeword and a second CQI associated with a second downlink channel codeword, and wherein the third differential channel state information parameter set indicates a difference between a third CQI associated with the second channel state information parameter set and one of the first CQI or the second CQI.

12. The method of claim 11, wherein the third differential channel state information parameter set indicates the difference between the third CQI and the first CQI, and wherein the second CQI is reported as a differential value from the first CQI.

13. A method for wireless communication at a network entity, the method comprising: Sending a channel state information reporting configuration to a user equipment (UE), the channel state information reporting configuration comprising a channel state information resource set and a plurality of codebooks for a plurality of antenna port sets associated with the channel state information resource set, wherein the plurality of codebooks comprises at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set; Sending one or more reference signals via the channel state information resource set; as well as A channel state information report is received from the UE based at least in part on the one or more reference signals, the channel state information report comprising a first set of channel state information parameters associated with the first codebook and a third set of differential channel state information parameters associated with the second codebook, wherein the third set of differential channel state information parameters indicates a difference between corresponding channel state information parameters in the second set of channel state information parameters and the first set of channel state information parameters.

14. The method according to claim 13, further comprising: The second set of channel state information parameters is determined based at least in part on an offset level between a second channel quality indicator (CQI) of the second codebook and an index value of a first CQI of the first codebook, the offset level being provided in the third set of differential channel state information parameters. 15 . The method of claim 14 , wherein the offset level indicates a range in a set of ranges of a difference between the second CQI and the first CQI. The method according to claim 14 , wherein the index values ​​of the first CQI and the second CQI indicate CQI values.

17. The method according to claim 13, further comprising: The first codebook is selected from the plurality of codebooks based at least in part on a number of antenna ports associated with each codebook in the plurality of codebooks.

18. The method according to claim 13, further comprising: The first codebook is selected from the plurality of codebooks based at least in part on a number of antenna port columns or a number of antenna port rows associated with each codebook in the plurality of codebooks.

19. The method according to claim 13, further comprising: The first codebook is selected from the plurality of codebooks based at least in part on an index value associated with the list of the plurality of antenna port sets associated with the set of channel state information resources.

20. The method of claim 13, wherein the first codebook corresponds to a base codebook associated with the set of channel state information resources indicated in the channel state information reporting configuration.

21. The method of claim 13, wherein the channel state information report includes an indication of an index value associated with the first codebook.

22. The method of claim 13, wherein the channel state information reporting configuration further comprises an identification of which codebook of the plurality of codebooks corresponds to the first codebook.

23. A method according to claim 13, wherein the first channel state information parameter set includes a first channel quality indicator (CQI) associated with a first downlink channel codeword and a second CQI associated with a second downlink channel codeword, and wherein the third differential channel state information parameter set indicates a difference between a third CQI associated with the second channel state information parameter set and one of the first CQI or the second CQI.

24. The method of claim 23, wherein the third differential channel state information parameter set indicates the difference between the third CQI and the first CQI, and wherein the second CQI is reported as a differential value from the first CQI.

25. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: receiving a channel state information reporting configuration, the channel state information reporting configuration comprising a channel state information resource set and a plurality of codebooks for a plurality of antenna port sets associated with the channel state information resource set, wherein the plurality of codebooks comprises at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set; Identifying a first channel state information parameter set associated with the first codebook; identifying a second channel state information parameter set associated with the second codebook; as well as Send a channel state information report, the channel state information report including the first channel state information parameter set and a third differential channel state information parameter set, wherein the third differential channel state information parameter set indicates a difference between corresponding channel state information parameters in the second channel state information parameter set and the first channel state information parameter set.

26. The apparatus of claim 25, wherein the instructions are further executable by the processor to cause the apparatus to: The third set of differential channel state information parameters is determined based at least in part on an offset level between an index value of a second channel quality indicator (CQI) of the second codebook and a first CQI of the first codebook.

27. The apparatus of claim 25, wherein the instructions are further executable by the processor to cause the apparatus to: The first codebook is selected from the plurality of codebooks based at least in part on a number of antenna ports associated with each codebook in the plurality of codebooks.

28. An apparatus for wireless communication at a network entity, the apparatus comprising: processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: Sending a channel state information reporting configuration to a user equipment (UE), the channel state information reporting configuration comprising a channel state information resource set and a plurality of codebooks for a plurality of antenna port sets associated with the channel state information resource set, wherein the plurality of codebooks comprises at least a first codebook for a first antenna port set and a second codebook for a second antenna port set different from the first antenna port set; Sending one or more reference signals via the channel state information resource set; as well as A channel state information report is received from the UE based at least in part on the one or more reference signals, the channel state information report comprising a first set of channel state information parameters associated with the first codebook and a third set of differential channel state information parameters associated with the second codebook, wherein the third set of differential channel state information parameters indicates a difference between corresponding channel state information parameters in the second set of channel state information parameters and the first set of channel state information parameters.

29. The apparatus of claim 28, wherein the instructions are further executable by the processor to cause the apparatus to: The second set of channel state information parameters is determined based at least in part on an offset level between a second channel quality indicator (CQI) of the second codebook and an index value of a first CQI of the first codebook, the offset level being provided in the third set of differential channel state information parameters.

30. The apparatus of claim 28, wherein the instructions are further executable by the processor to cause the apparatus to: The first codebook is selected from the plurality of codebooks based at least in part on a number of antenna ports associated with each codebook in the plurality of codebooks.

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