Port group pairing for channel status information in multiple send / receive point deployments

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may identify multiple resource sets, wherein the resource sets in the multiple resource sets include one or more type-0 resources and one or more type-1 resources, wherein the one or more type-0 resources are configured with a single transmission configuration indicator (TCI) state, and the one or more type-1 resources are configured with at least two TCI states; identify multiple hypotheses; identify a set of hypothesis groups, wherein the multiple hypotheses are divided into a set of hypothesis groups; and report a set of channel state information (CSI) corresponding to the set of hypothesis groups to one or more transmit receive points (TRPs) and for the set of hypothesis groups. Many other aspects are provided.

Description

Technical Field

[0001] Aspects of the present disclosure relate generally to wireless communications and to techniques and apparatus for port group pairing for channel state information (CSI) in multiple transmit receive point (TRP) deployments. Background Art

[0002] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0003] A wireless communication network may include many base stations (BSs) capable of supporting communications for many user equipment (UEs). User equipment (UEs) may communicate with a base station (BS) via downlinks and uplinks. A downlink (or forward link) refers to the communication link from the BS to the UE, and an uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a Node B, gNB, access point (AP), radio head, transmit receive point (TRP), new radio (NR) BS, 5G Node B, etc.

[0004] The aforementioned multiple access technologies have been adopted in various telecommunications standards to provide a common protocol that enables diverse user devices to communicate at the city, national, regional, and even global levels. New Radio (NR), also known as 5G, is a set of enhancements to the LTE mobile standard released by the Third Generation Partnership Project (3GPP). NR aims to better support mobile broadband internet access by using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink (DL) and CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL), as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. This improves spectral efficiency, reduces costs, improves service, utilizes new spectrum, and better integrates with other open standards. However, as demand for mobile broadband access continues to increase, there is a need for further improvements to LTE and NR technologies. Preferably, these improvements should be applicable to other multiple access technologies and the telecommunications standards that employ them. Summary of the Invention

[0005] In some aspects, a wireless communication method performed by a user equipment (UE) may include identifying multiple resource sets, wherein the resource sets in the multiple resource sets include one or more Type-0 resources and one or more Type-1 resources, wherein the one or more Type-0 resources are configured with a single transmission configuration indicator (TCI) state and the one or more Type-1 resources are configured with at least two TCI states; identifying multiple hypotheses based at least in part on the Type-0 resources and the Type-1 resources; identifying a set of hypothesis groups based at least in part on the Type-0 resources, the Type-1 resources, and the multiple hypotheses, wherein the multiple hypotheses are divided into a set of hypothesis groups; and reporting a set of channel state information (CSI) corresponding to the set of hypothesis groups to one or more transmit receive points (TRPs) and for the set of hypothesis groups.

[0006] In some aspects, a UE for wireless communication may include a memory and one or more processors operably coupled to the memory. The memory and the one or more processors may be configured to: identify a plurality of resource sets, wherein a resource set in the plurality of resource sets includes one or more Type-0 resources and one or more Type-1 resources, wherein the one or more Type-0 resources are configured with a single TCI state and the one or more Type-1 resources are configured with at least two TCI states; identify a plurality of hypotheses based at least in part on the Type-0 resources and the Type-1 resources; identify a set of hypothesis groups based at least in part on the Type-0 resources, the Type-1 resources, and the plurality of hypotheses, wherein the plurality of hypotheses are divided into the set of hypothesis groups; and report a set of CSI corresponding to the set of hypothesis groups to one or more TRPs and for the set of hypothesis groups.

[0007] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a UE, the one or more instructions may cause the one or more processors to: identify a plurality of resource sets, wherein a resource set in the plurality of resource sets includes one or more Type-0 resources and one or more Type-1 resources, wherein the one or more Type-0 resources are configured with a single TCI state and the one or more Type-1 resources are configured with at least two TCI states; identify a plurality of hypotheses based at least in part on the Type-0 resources and the Type-1 resources; identify a set of hypothesis groups based at least in part on the Type-0 resources, the Type-1 resources, and the plurality of hypotheses, wherein the plurality of hypotheses are divided into the set of hypothesis groups; and report a set of CSI corresponding to the set of hypothesis groups to one or more TRPs and for the set of hypothesis groups.

[0008] In some aspects, an apparatus for wireless communication may include: components for identifying multiple resource sets, wherein the resource sets in the multiple resource sets include one or more Type-0 resources and one or more Type-1 resources, wherein the one or more Type-0 resources are configured with a single TCI state and the one or more Type-1 resources are configured with at least two TCI states; components for identifying multiple hypotheses based at least in part on the Type-0 resources and the Type-1 resources; components for identifying a set of hypothesis groups based at least in part on the Type-0 resources, the Type-1 resources and the multiple hypotheses, wherein the multiple hypotheses are divided into a set of hypothesis groups; and components for reporting a set of CSI corresponding to the set of hypothesis groups to one or more TRPs and for the set of hypothesis groups.

[0009] Aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems as substantially described herein with reference to and as illustrated in the accompanying figures and description.

[0010] The foregoing has outlined rather broadly the features and technical advantages of the examples according to the present disclosure so that the subsequent detailed description may be better understood. Additional features and advantages will be described below. The concepts and specific examples disclosed may be readily used as a basis for modifying or designing other structures for achieving the same purposes of the present disclosure. Such equivalent structures do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, their organization and method of operation, and related advantages will be better understood from the following description when considered in conjunction with the accompanying drawings. Each figure is provided for the purpose of illustration and description and not as a definition of limitations to the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to enable a detailed understanding of the above-described features of the present disclosure, a more detailed description, briefly summarized above, may be obtained by reference to some of the aspects shown in the accompanying drawings. However, it should be noted that the drawings illustrate only certain typical aspects of the present disclosure and are not therefore to be considered limiting of its scope, as the description may admit to other equally valid aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0012] Figure 1 is a block diagram conceptually illustrating an example of a wireless communication network in accordance with various aspects of the present disclosure.

[0013] Figure 2 is a block diagram conceptually illustrating an example of a base station communicating with a UE in a wireless communication network according to various aspects of the present disclosure.

[0014] Figure 3 is a diagram illustrating an example of port group pairing for channel state information in a multiple transmission and reception point deployment according to various aspects of the present disclosure.

[0015] Figure 4 is a diagram illustrating an example process performed, for example, by a user device, according to various aspects of the present disclosure. DETAILED DESCRIPTION

[0016] Various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms and should not be construed as being limited to any specific structure or function presented throughout the present disclosure. On the contrary, these aspects are provided so that the present disclosure will be thorough and complete and will fully convey the scope of the present disclosure to those skilled in the art. Based on the teachings herein, it should be understood by those skilled in the art that, regardless of whether it is implemented independently of any other aspect of the present disclosure or implemented in combination with any other aspect of the present disclosure, the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein. For example, a device may be implemented or a method may be practiced using any number of aspects set forth herein. In addition, the scope of the present disclosure is intended to cover such a device or method that is practiced using other structures, functions, or structures and functions that are additional or different from the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein may be implemented by one or more elements of the claims.

[0017] Several aspects of telecommunications systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively, "elements"). These elements may be implemented using hardware, software, or a combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0018] It should be noted that although aspects may be described herein using terminology generally associated with 3G and / or 4G wireless technologies, aspects of the present disclosure are applicable to other generation-based communication systems, such as 5G and later versions, including NR technology.

[0019] Figure 1 is a diagram illustrating a wireless network 100 in which aspects of the present disclosure may be practiced. The wireless network 100 may be an LTE network or some other wireless network, such as a 5G or NR network. The wireless network 100 may include a number of BSs 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A BS is an entity that communicates with a user equipment (UE) and may also be referred to as a base station, NR BS, Node B, gNB, 5G Node B (NB), access point, transmit receive point (TRP), etc. Each BS may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" can refer to the coverage area of ​​a BS and / or a BS subsystem serving that coverage area, depending on the context in which the term is used.

[0020] A BS may provide communication coverage for macro cells, pico cells, femto cells, and / or other types of cells. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access to UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access to UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access to UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1 In the example shown in FIG, BS 110a may be a macro BS for macrocell 102a, BS 110b may be a pico BS for picocell 102b, and BS 110c may be a femto BS for femtocell 102c. A BS may support one or more (e.g., three) cells. The terms "eNB," "base station," "NR BS," "gNB," "TRP," "AP," "Node B," "5G NB," and "cell" may be used interchangeably herein.

[0021] In some aspects, the cells may not necessarily be fixed, and the geographic area of ​​the cells may move depending on the location of the mobile BS. In some aspects, the BSs may be interconnected with each other and / or with one or more BSs or network nodes (not shown) in the wireless network 100 using any suitable transport network through various types of backhaul interfaces (such as direct physical connections), virtual networks, etc.

[0022] The wireless network 100 may also include a relay station. A relay station is an entity that can receive transmissions of data from an upstream station (e.g., a BS or UE) and send transmissions of data to a downstream station (e.g., a UE or BS). A relay station may also be a UE that can relay transmissions for other UEs. Figure 1 In the example shown in FIG, a relay station 110d may communicate with a macro BS 110a and a UE 120d to facilitate communication between the BS 110a and the UE 120d. A relay station may also be referred to as a relay BS, a relay base station, a relay, or the like.

[0023] The wireless network 100 may be a heterogeneous network including different types of BSs, such as macro BSs, pico BSs, femto BSs, relay BSs, etc. These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), while a pico BS, a femto BS, and a relay BS may have a lower transmit power level (e.g., 0.1 to 2 watts).

[0024] The network controller 130 may be connected to a set of BSs and may provide coordination and control for these BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with each other via a wireless or wired backhaul, for example, directly or indirectly.

[0025] UEs 120 (e.g., 120a, 120b, 120c) may be dispersed throughout the wireless network 100, and each UE may be fixed or mobile. A UE may also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. A UE may be a cellular phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, a biometric sensor / device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring, a smart bracelet)), an entertainment device (e.g., a music or video device or satellite radio), a vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0026] Some UEs may be considered machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which may communicate with a base station, other devices (e.g., remote devices), or some other entity. For example, a wireless node may provide connectivity to or to a network (e.g., a wide area network such as the Internet or a cellular network) via a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices and / or may be implemented as NB-IoT (narrowband Internet of Things) devices. Some UEs may be considered customer premises equipment (CPE). UE 120 may be included in a housing that houses components of UE 120 (such as a processor component, a memory component, etc.).

[0027] In general, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific radio access technology (RAT) and can operate on one or more frequencies. RAT can also be referred to as radio technology, air interface, etc. Frequency can also be referred to as carrier, channel, etc. Each frequency can support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0028] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using base station 110 as an intermediary) using one or more sidelink channels. For example, the UEs 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, etc.), mesh networks, etc. In such cases, the UEs 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by the base station 110.

[0029] As mentioned above, providing Figure 1 As an example. Other examples may be related to Figure 1 The examples described are different.

[0030] Figure 2 A block diagram shows a design 200 of a base station 110 and a UE 120, which may be Figure 1 Base station 110 may be equipped with T antennas 234a through 234t, and UE 120 may be equipped with R antennas 252a through 252r, where in general T≧1 and R≧1.

[0031] At base station 110, transmit processor 220 may receive data for one or more UEs from data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. Transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI) and control information (e.g., CQI requests, grants, upper layer signaling, etc.) and provide overhead symbols and control symbols. Transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS)) and synchronization signals (e.g., primary synchronization signals (PSS) and secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a through 232t may be transmitted via T antennas 234a through 234t, respectively. According to various aspects described in greater detail below, position coding may be utilized to generate synchronization signals to convey additional information.

[0032] At UE 120, antennas 252a through 252r can receive downlink signals from base station 110 and / or other base stations and can provide received signals to demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 can condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 can further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 can obtain received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. A receive processor 258 can process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The channel processor may determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), etc. In some aspects, one or more components of UE 120 may be included in a housing.

[0033] On the uplink, at UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information from a controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, CQI, etc.). The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 (if applicable), further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to the base station 110. At the base station 110, uplink signals from UE 120 and other UEs may be received by antennas 234, processed by demodulators 232, detected by MIMO detector 236 (if applicable), and further processed by receive processor 238 to obtain decoded data and control information transmitted by UE 120. The receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to the controller / processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292.

[0034] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other component of the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or the like may perform one or more techniques associated with port group pairing for channel state information (CSI) in a multi-TRP deployment, as described in more detail elsewhere herein. Figure 2 Any other component of the may perform or direct e.g. Figure 4 The operations of process 400 and / or other processes as described herein may be performed. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include non-transitory computer-readable media storing one or more instructions for wireless communication. For example, when executed by one or more processors of base station 110 and / or UE 120, the one or more instructions may perform or direct, for example, Figure 4 The scheduler 246 may schedule UEs for data transmission on the downlink and / or uplink.

[0035] In some aspects, the UE 120 may include: means for identifying a plurality of resource sets, wherein a resource set in the plurality of resource sets includes one or more Type-0 resources and one or more Type-1 resources, wherein the one or more Type-0 resources are configured with a single TCI state and the one or more Type-1 resources are configured with at least two TCI states; means for identifying a plurality of hypotheses based at least in part on the Type-0 resources and the Type-1 resources; means for identifying a set of hypothesis groups based at least in part on the Type-0 resources, the Type-1 resources, and the plurality of hypotheses, wherein the plurality of hypotheses are partitioned into the set of hypothesis groups; and means for reporting a set of CSI corresponding to the set of hypothesis groups to one or more TRPs and for the set of hypothesis groups, etc. In some aspects, such means may include combining Figure 2 One or more components of UE 120 are depicted, such as controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, and the like.

[0036] As mentioned above, providing Figure 2 As an example. Other examples can be related to Figure 2 The examples described are different.

[0037] In some communication systems, a UE may communicate in a multi-TRP deployment. For example, a UE may communicate with a first TRP, a second TRP, and so on, which may achieve improved throughput, reliability, coverage, and the like. The UE may provide a channel state information (CSI) report. The CSI report may be periodic, semi-permanent, or aperiodic. The CSI report may be based on the CSI reference signal (RS) resources and interference measurement (IM) resources configured for the UE. The CSI may include a channel quality indicator (CQI), a precoding matrix indicator (PMI), a CSI RS resource indicator (CRI), a synchronization signal (SS) / physical broadcast channel (PBCH) block resource indicator (SSBRI), a layer indicator (LI), a rank indicator (RI), and / or a layer 1 (L1) reference signal received power (RSRP) (L1-RSRP) indicator.

[0038] As part of the CSI report, the UE may also provide a CRI to identify the CSI RS resources used for the reported CSI. For example, the UE may provide a CRI associated with CSI feedback that identifies the channel measurement resource (CMR). Each value of the CRI (which may be referred to as a CRI code point) may identify the hypothesis for which the UE reports the CSI. When the UE is connected to multiple TRPs, the UE may support a single CSI from a single TRP. The UE may receive independent CSI reports from each TRP via separate reporting configurations. Similarly, the UE may use dynamic point selection for CSI reporting, whereby each identified resource is associated with a specific transmission configuration indicator (TCI) state corresponding to a specific TRP. However, such a configuration may result in a relatively static channel and / or interference hypothesis assessment.

[0039] The new CSI framework may enable the UE to select and report a preferred TRP or TRP pair. In such a CSI framework, the reporting configuration may identify a non-coherent joint transmission (NCJT) hypothesis corresponding to a port group pair associated with a common resource for channel measurement represented by a Type 1 resource. In this case, each port group of the port group pair may be associated with a single TCI state (a resource is associated with two TCI states). In some cases, each resource may be associated with a single TCI state corresponding to a single port group (e.g., not configured with a port group pair). Such resources may be represented by a Type 0 resource. The RI may include a first rank indicator for identifying single TRP operation (e.g., an RI value greater than 1 for the first port group and an RI value of 0 for the second port group) and a second rank indicator for identifying multi-TRP operation (e.g., an RI value greater than 0 for two port groups).

[0040] Some aspects described herein enable hypothesis grouping of multi-TRP CSI in the context of port group pairing. For example, the UE may identify a first group of type-0 resources and a second group of type-1 resources. In this case, type-0 resources may be associated with a single TCI state and type-1 resources may be associated with at least two TCI states. The UE may identify hypotheses for the first group of type-0 resources and the second group of type-1 resources and may group the hypotheses into one or more hypothesis groups. In this case, the UE may evaluate the hypotheses of the one or more hypothesis groups and may report a set of CSI based at least in part on the evaluated hypotheses. In this manner, the UE enables dynamic channel and / or interference hypothesis evaluation for NCJT operations such as operations on frequency band 1 (FR1) and frequency band 2 (FR2).

[0041] Figure 3 3 is a diagram illustrating an example 300 of port group pairs for CSI in a multi-TRP deployment according to various aspects of the present disclosure. Figure 3 As shown in , example 300 includes a UE 120 and one or more TRPs 305 (eg, which may correspond to BS 110). For example, UE 120 may communicate with a first TRP 305, a second TRP 305, and so on.

[0042] like Figure 3 3 and further shown by reference numeral 310, the UE 120 may identify resource sets. For example, the UE 120 may identify one or more resource sets corresponding to the TRPs 305 (e.g., a first TRP 305, a second TRP 305, an nth TRP 305, etc.). Each resource set may include a first type of resource and a second type of resource. For example, the UE 120 may identify a number N0 of type-0 resources in resource set 0 and a number N1 of type-1 resources in resource set 0. In this case, the type-0 resources may be configured with a single TCI state (e.g., corresponding to a single port group) and the type-1 resources may be configured with multiple TCI states (e.g., a first TCI state corresponding to port group 0 and a second TCI state corresponding to port group 1).

[0043] like Figure 3As further shown in the figure and by reference numeral 315, the UE 120 can identify hypotheses (e.g., CSI hypotheses) and hypothesis groups. For example, the UE 120 can identify a set of hypotheses to be evaluated to enable subsequent communication. In some aspects, each resource of one or more resource sets (e.g., CSI RS or CSI IM resources) can correspond to a hypothesis. For example, the UE 120 can identify a single hypothesis (e.g., single TRP operation hypothesis) for each of the N0 type-0 resources of resource set 0, and can identify a single hypothesis (e.g., NCJT hypothesis) for each of the N1 type-1 resources of resource set 0. In this case, the UE 120 can also identify two additional hypotheses (e.g., single TRP operation hypothesis) corresponding to two port groups for each of the N1 type-1 resources of resource set 0. As a result, the UE 120 can identify a total of N0 + N1 + 2N1 hypotheses for resource set 0. In some aspects, the UE 120 can determine to exclude the single TRP operation hypothesis for type-1 resources. For example, the UE 120 can receive radio resource control (RRC) signaling, medium access control (MAC) control element (CE) signaling, etc. indicating that type-1 resources will only have the NCJT hypothesis. In this case, the UE 120 can identify a total of N0 + N1 hypotheses for resource set 0.

[0044] In some aspects, the UE 120 can divide the hypotheses into one or more hypothesis groups. For example, for a total of N0 + N1 + 2N1 = N0 + 3N1 hypotheses, the UE 120 can identify K hypothesis groups, where hypothesis group k (0 ≤ k < K) includes L k hypotheses, such that:

[0045]

[0046] In this case, at least partially based on identifying the hypothesis groups and assigning the hypotheses to the hypothesis groups, the UE 120 can evaluate the hypotheses of the hypothesis groups. For example, as discussed herein, the UE 120 can select one or more hypotheses with the highest spectral efficiency in each hypothesis group for reporting in the CSI. In some aspects, the UE 120 can determine the number of hypotheses to be selected from each hypothesis group at least partially based on the received signaling, UE capabilities, etc. Additionally or alternatively, the UE 120 can provide UE capability signaling identifying the maximum number of type-0 resources, the maximum number of type-1 resources, their combinations, etc. Similarly, the UE 120 can provide UE capability signaling identifying the maximum number of active hypotheses or hypothesis groups and the associated CSI.

[0047] In some aspects, the UE 120 may determine the number of hypothesis groups and divide the hypotheses into that number of hypothesis groups. For example, the UE 120 may select a single hypothesis group. In this case, the UE 120 may report one or more best hypotheses (with respect to spectral efficiency) from all single-TRP operation and multi-TRP operation hypotheses. Alternatively, the UE 120 may select a pair of hypothesis groups. For example, the UE 120 may divide the hypotheses into a first hypothesis group for single-TRP hypotheses (e.g., N0 hypotheses corresponding to type-0 resources and 2N1 hypotheses corresponding to port groups of type-1 resources) and a second hypothesis group for multi-TRP hypotheses (e.g., N1 hypothesis for type-1 resources). In this case, the UE 120 may report one or more CSIs for one or more best hypotheses from the first hypothesis group (e.g., one or more single-TRP hypotheses) and one or more CSIs for one or more best hypotheses from the second hypothesis group (e.g., one or more multi-TRP hypotheses).

[0048] Alternatively, the UE 120 may select three hypothesis groups. In this case, the UE 120 may divide the hypotheses into a first hypothesis group of a single TRP hypothesis for Type-0 resources, a second hypothesis group of multiple TRP hypotheses for Type-1 resources, and a third hypothesis group of a single TRP hypothesis for Type-1 resources. Alternatively, the UE 120 may select the number of hypothesis groups based at least in part on the number of hypothesis groups (e.g., 1+N1). In this case, the UE 120 may divide the hypotheses into a first hypothesis group including a single TRP hypothesis for Type-0 resources and N1 hypothesis groups corresponding to each Type-1 resource (e.g., each of the N1 hypothesis groups includes a multiple TRP hypothesis for Type-1 resources and a pair of single TRP hypotheses for Type-1 resources). In this case, the UE 120 may report one or more CSIs for Type-0 resources and one or more CSIs for each of the Type-1 resources.

[0049] In some aspects, UE 120 may receive signaling to configure hypothesis grouping. For example, UE 120 may receive RRC signaling, MAC CE signaling, etc. that instructs UE 120 to divide the hypotheses into a specific number, i.e., K hypothesis groups. In some aspects, UE 120 may assign hypotheses to multiple hypothesis groups.

[0050] like Figure 3, and further indicated by reference numeral 320, the UE 120 may report one or more CSI for one or more hypothesis groups. For example, the UE 120 may report the CSI for each hypothesis group. In some aspects, the UE 120 may report the CSI based at least in part on evaluating the hypotheses for each hypothesis group. For example, the UE 120 may identify a hypothesis with the highest spectral efficiency among the hypotheses of the hypothesis group and may report the hypothesis in the CSI for the hypothesis group. Additionally or alternatively, the UE 120 may report multiple hypotheses from the hypothesis group. For example, the UE 120 may report a threshold number of hypotheses within the hypothesis group that have, for example, the highest spectral efficiency. In this case, the UE 120 may configure the threshold number based at least in part on UE capabilities, the type of hypothesis group configured, and the like.

[0051] In some aspects, the UE 120 may provide a CRI associated with a CSI report for one or more hypotheses. For example, the UE 120 may provide a CRI that is uniquely mapped to a particular hypothesis. In this case, the UE 120 may generate a CRI having a value determined at least in part based on a resource index for a hypothesis of a hypothesis group (e.g., for a single TRP hypothesis associated with type 0 resources and a multiple TRP hypothesis associated with type 1 resources). Similarly, the UE 120 may generate a CRI for other hypotheses (e.g., a single TRP hypothesis associated with type 1 resources) based at least in part on a sequence number that is based at least in part on the associated resources and at least in part on a port group. Alternatively, the CRI may be mapped to the hypothesis such that the CRI is based at least in part on a resource index for the type 0 resource hypothesis and at least in part on a sequence number for the type 1 resource hypothesis. In some aspects, the UE 120 may determine the CRI based at least in part on a numbering between active hypotheses. For example, the UE 120 may receive signaling identifying a subset of hypotheses as active or inactive and may evaluate the active hypotheses and abandon evaluation of the inactive hypotheses. Similarly, UE 120 may forgo evaluation of inactive hypothesis groups.

[0052] In some aspects, the CRI may be implicitly defined based at least in part on a resource group and / or hypothesis group. For example, the UE 120 may determine the CRI based at least in part on a hypothesis identifier that is unique to each possible hypothesis. Additionally or alternatively, the UE 120 may determine the CRI based at least in part on a hypothesis identifier that is unique to each active hypothesis. Additionally or alternatively, the UE 120 may determine the CRI based at least in part on a hypothesis group. For example, within a hypothesis group, a hypothesis may have a unique identifier, and the CRI may correspond to a specific hypothesis within the hypothesis group. In some aspects, the CRI may be explicitly defined using signaling. For example, the UE 120 may receive RRC signaling, MAC CE signaling, etc. that identifies a CRI to hypothesis mapping, a set of hypothesis identifiers, etc. Additionally or alternatively, the UE 120 may receive a MAC CE (e.g., a hypothesis activation or deactivation MAC CE) that defines the CRI to hypothesis mapping.

[0053] As mentioned above, providing Figure 3 As an example. Other examples can be related to Figure 3 The examples described are different.

[0054] Figure 4 4 is a diagram illustrating an example process 400, for example, performed by a UE, in accordance with various aspects of the present disclosure. Example process 400 is an example of a UE (eg, UE 120) performing port group pairing for CSI in a multi-TRP deployment.

[0055] like Figure 4 As shown in , in some aspects, process 400 may include identifying a plurality of resource sets, wherein a resource set in the plurality of resource sets includes one or more Type-0 resources and one or more Type-1 resources, wherein the one or more Type-0 resources are configured with a single TCI state and the one or more Type-1 resources are configured with at least two TCI states (block 410). For example, as described above, the UE (e.g., using the receive processor 258, the transmit processor 264, the controller / processor 280, the memory 282, etc.) may identify a plurality of resource sets, wherein a resource set in the plurality of resource sets includes one or more Type-0 resources and one or more Type-1 resources. In some aspects, the one or more Type-0 resources are configured with a single TCI state and the one or more Type-1 resources are configured with at least two TCI states.

[0056] like Figure 4 As shown in , in some aspects, process 400 may include identifying a plurality of hypotheses based at least in part on the Type-0 resources and the Type-1 resources (block 420). For example, as described above, the UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may identify a plurality of hypotheses based at least in part on the Type-0 resources and the Type-1 resources.

[0057] like Figure 4 As shown in , in some aspects, process 400 may include identifying a set of hypothesis groups based at least in part on Type-0 resources, Type-1 resources, and a plurality of hypotheses, wherein the plurality of hypotheses are divided into a set of hypothesis groups (block 430). For example, as described above, the UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may identify a set of hypothesis groups based at least in part on Type-0 resources, Type-1 resources, and a plurality of hypotheses. In some aspects, the plurality of hypotheses are divided into a set of hypothesis groups.

[0058] like Figure 4 As shown in , in some aspects, process 400 may include reporting a set of channel state information (CSI) corresponding to a set of hypothesis groups to one or more transmit receive points (TRPs) and for the set of hypothesis groups (block 440). For example, as described above, the UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may report a set of CSI corresponding to a set of hypothesis groups to one or more TRPs and for the set of hypothesis groups.

[0059] Process 400 may include additional aspects, such as any single aspect and / or any combination of aspects described below and / or in connection with one or more other processes described elsewhere herein.

[0060] In a first aspect, identifying the plurality of hypotheses includes identifying a single TCI state hypothesis for each Type-0 resource, a plurality of TCI state hypotheses for each Type-1 resource, and a single TCI state hypothesis pair for each Type-1 resource.

[0061] In a second aspect, alone or in combination with the first aspect, identifying the plurality of hypotheses includes selectively including a single TCI state hypothesis pair for each Type 1 resource in the plurality of hypotheses based at least in part on the received signaling.

[0062] In a third aspect, alone or in combination with one or more of the first and second aspects, the type 0 resource is not configured with multiple port groups, and the type 1 resource is configured with multiple port groups.

[0063] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the multiple resource sets are multiple CSI RS resource sets or CSI IM resource sets.

[0064] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, CSI in the set of CSIs identifies a hypothesis in a hypothesis group in the set of hypothesis groups that has the highest spectral efficiency among one or more hypotheses in the hypothesis group.

[0065] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the CSI in the set of CSIs identifies a threshold number of hypotheses in a hypothesis group in a set of hypothesis groups that have the highest spectral efficiency among one or more hypotheses in the hypothesis group.

[0066] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the threshold amount is based at least in part on UE capabilities.

[0067] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, identifying a set of hypothesis groups comprises assigning a plurality of hypotheses to a single hypothesis group.

[0068] In a ninth aspect, alone or in combination with one or more of aspects one to eight, identifying a set of hypothesis groups comprises assigning a first subset of the plurality of hypotheses to a first hypothesis group, wherein the first subset of the plurality of hypotheses corresponds to hypotheses associated with a single TCI state; and assigning a second subset of the plurality of hypotheses to a second hypothesis group, wherein the second subset of the plurality of hypotheses corresponds to hypotheses associated with a plurality of TCI states.

[0069] In the tenth aspect, alone or in combination with one or more of aspects one to nine, identifying a set of hypothesis groups comprises assigning a first subset of the plurality of hypotheses to a first hypothesis group, wherein the first subset of the plurality of hypotheses corresponds to hypotheses associated with a single TCI state; assigning a second subset of the plurality of hypotheses to a second hypothesis group, wherein the second subset of the plurality of hypotheses corresponds to hypotheses associated with multiple TCI states; and assigning a third subset of the plurality of hypotheses to a third hypothesis group, wherein the third subset of the plurality of hypotheses corresponds to hypotheses associated with multiple TCI states.

[0070] In the eleventh aspect, alone or in combination with one or more of the first to tenth aspects, identifying a set of hypothesis groups includes assigning a first subset of multiple hypotheses to a first hypothesis group in the set of hypothesis groups, wherein the first subset of the multiple hypotheses corresponds to hypotheses associated with a single TCI state; and assigning a second subset of the multiple hypotheses to one or more second hypothesis groups, wherein the second subset of the multiple hypotheses corresponds to hypotheses associated with multiple TCI states, wherein each hypothesis group in the one or more second hypothesis groups is associated with a single Type 1 resource.

[0071] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, reporting the set of CSIs includes reporting a CRI identifying a selected hypothesis.

[0072] In a thirteenth aspect, alone or in combination with one or more of aspects one to twelfth, the CRI is defined at least in part based on a hypothesis identifier, and the hypothesis identifier is based at least in part on a sequence of hypotheses, a hypothesis group, whether the hypothesis group is active, a resource type, or a port group.

[0073] In a fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, the CRI is defined based at least in part on received signaling.

[0074] In a fifteenth aspect, alone or in combination with one or more of the first to fourteenth aspects, the received signaling is radio resource control signaling or MAC CE signaling.

[0075] In a sixteenth aspect, alone or in combination with one or more of aspects one to fifteen, process 400 includes sending UE capability signaling, and the UE capability signaling includes information identifying a supported number of type 0 resources, a supported number of type 1 resources, a supported number of active hypotheses, or a supported number of active hypothesis groups.

[0076] although Figure 4 Example blocks of process 400 are shown, but in some aspects, process 400 may include Figure 4 4. Additionally or alternatively, two or more blocks of process 400 may be performed in parallel.

[0077] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of these aspects.

[0078] As used herein, the term "component" is intended to be broadly interpreted as hardware, firmware, and / or a combination of hardware and software. As used herein, a processor is implemented in hardware, firmware, and / or a combination of hardware and software.

[0079] As used herein, satisfying a threshold may refer to a value being greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0080] Obviously, the systems and / or methods described herein can be implemented in various forms of hardware, firmware, and / or a combination of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods is not limited in these respects. Thus, the operation and behavior of the systems and / or methods are described herein without reference to specific software code—it is understood that software and hardware can be designed to implement the systems and / or methods based, at least in part, on the description herein.

[0081] Although specific combinations of features are described in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of the various aspects. In fact, many of these features can be combined in ways that are not specifically described in the claims and / or disclosed in the specification. Although each dependent claim listed below may directly be subordinate to only one claim, the disclosure of the various aspects includes each dependent claim in combination with each other claim in the claim set. As used herein, a phrase referring to "at least one of" a list of items refers to any combination of these items, including single members. As an example, "at least one of a, b, or c" is intended to cover a, b, c, ab, ac, bc, and abc, as well as any combination with multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other order of a, b, and c).

[0082] Unless explicitly described as such, any element, behavior or instruction used herein should not be interpreted as critical or essential. In addition, as used herein, the articles "a" and "an" are intended to include one or more items and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more items (e.g., related items, unrelated items, a combination of related and unrelated items, etc.) and can be used interchangeably with "one or more". If only one item is intended to be used, the phrase "only one" or similar language is used. In addition, as used herein, the terms "has", "have", "having" etc. are intended to be open terms. In addition, unless explicitly stated otherwise, the phrase "based on" is intended to mean "based at least in part on".

Claims

1. A method of wireless communication performed by a user equipment (UE), comprising: identifying a plurality of resource sets, wherein a resource set in the plurality of resource sets comprises one or more type-0 resources and one or more type-1 resources, wherein the one or more type-0 resources are configured with a single transmission configuration indicator (TCI) state and the one or more type-1 resources are configured with at least two TCI states; identifying a plurality of hypotheses based at least in part on the Type 0 resource and the Type 1 resource; identifying a set of hypothesis groups based at least in part on the Type-0 resources, the Type-1 resources, and the plurality of hypotheses, wherein the plurality of hypotheses are divided into the set of hypothesis groups; as well as A set of channel state information (CSI) corresponding to the set of hypothesis groups is reported to one or more transmit reception points (TRPs) and for the set of hypothesis groups.

2. The method according to claim 1, wherein Identifying the plurality of hypotheses includes: A single TCI state hypothesis for each Type 0 resource, multiple TCI state hypotheses for each Type 1 resource, and a single TCI state hypothesis pair for each Type 1 resource are identified.

3. The method according to claim 2, wherein: Identifying the plurality of hypotheses includes: The single TCI state hypothesis pair for each Type 1 resource is selectively included in the plurality of hypotheses based at least in part on the received signaling.

4. The method according to claim 1, wherein The type 0 resource is not configured with multiple port groups, while the type 1 resource is configured with multiple port groups.

5. The method according to claim 1, wherein The multiple resource sets are multiple CSI reference signal (RS) resource sets or CSI interference measurement (IM) resource sets.

6. The method according to claim 1, wherein The CSI in the set of CSIs identifies a hypothesis in the set of hypotheses in the set of hypotheses that has the highest spectral efficiency among the one or more hypotheses in the set of hypotheses.

7. The method according to claim 1, wherein The CSI in the set of CSIs identifies a threshold number of hypotheses in a hypothesis group in the set of hypothesis groups that have the highest spectral efficiency among the one or more hypotheses in the hypothesis group.

8. The method according to claim 7, wherein: The threshold number is based at least in part on UE capabilities.

9. The method according to claim 1, wherein: Identifying the set of hypotheses includes: The plurality of hypotheses are assigned to a single hypothesis group.

10. The method according to claim 1, wherein Identifying the set of hypotheses includes: assigning a first subset of the plurality of hypotheses to a first hypothesis group, wherein the first subset of the plurality of hypotheses corresponds to hypotheses associated with a single TCI state; and assigning a second subset of the plurality of hypotheses to a second hypothesis group, The second subset of the plurality of hypotheses corresponds to hypotheses associated with a plurality of TCI states.

11. The method according to claim 1, wherein Identifying the set of hypotheses includes: assigning a first subset of the plurality of hypotheses to a first hypothesis group, wherein the first subset of the plurality of hypotheses corresponds to hypotheses associated with a single TCI state; assigning a second subset of the plurality of hypotheses to a second hypothesis group, wherein the second subset of the plurality of hypotheses corresponds to hypotheses associated with a plurality of TCI states; and assigning a third subset of the plurality of hypotheses to a third hypothesis group, Wherein, the third subset of the plurality of hypotheses corresponds to hypotheses associated with a plurality of TCI states.

12. The method according to claim 1, wherein Identifying the set of hypotheses includes: assigning a first subset of the plurality of hypotheses to a first group of hypotheses in the set of hypothesis groups, wherein the first subset of the plurality of hypotheses corresponds to hypotheses associated with a single TCI state; and assigning a second subset of the plurality of hypotheses to one or more second hypothesis groups, wherein the second subset of the plurality of hypotheses corresponds to hypotheses associated with a plurality of TCI states, Each hypothesis group in the one or more second hypothesis groups is associated with a single type 1 resource.

13. The method according to claim 1, wherein The set of CSI reported includes: The report identifies the CSI Reference Signal (RS) Resource Indicator (CRI) for the selected hypothesis.

14. The method according to claim 13, wherein The CRI is defined at least in part based on a hypothesis identifier, and wherein the hypothetical identifier is based at least in part on: hypothetical sequence, Assume that the group Assuming the group is active, Resource type, or Port group.

15. The method according to claim 13, wherein The CRI is defined based at least in part on received signaling.

16. The method according to claim 15, wherein The received signaling is radio resource control signaling or medium access control (MAC) control element signaling.

17. The method according to claim 1, further comprising: Send UE capability signaling, The UE capability signaling includes the following information: The supported number of type 0 resources, The supported number of type 1 resources, The amount of support for the activity hypothesis, or The amount of support for the active hypothesis grouping.

18. A user equipment (UE) for wireless communication, comprising: Memory; as well as one or more processors operatively coupled to the memory, the memory and the one or more processors being configured to: identifying a plurality of resource sets, wherein a resource set in the plurality of resource sets comprises one or more type-0 resources and one or more type-1 resources, wherein the one or more type-0 resources are configured with a single transmission configuration indicator (TCI) state and the one or more type-1 resources are configured with at least two TCI states; identifying a plurality of hypotheses based at least in part on the Type 0 resource and the Type 1 resource; identifying a set of hypothesis groups based at least in part on the Type-0 resources, the Type-1 resources, and the plurality of hypotheses, wherein the plurality of hypotheses is divided into the set of hypothesis groups; and A set of channel state information (CSI) corresponding to the set of hypothesis groups is reported to one or more transmit reception points (TRPs) and for the set of hypothesis groups.

19. A non-transitory computer-readable medium storing one or more instructions for wireless communication, the one or more instructions comprising: The one or more instructions, when executed by one or more processors of a user equipment (UE), cause the one or more processors to: identifying a plurality of resource sets, wherein a resource set in the plurality of resource sets comprises one or more type-0 resources and one or more type-1 resources, wherein the one or more type-0 resources are configured with a single transmission configuration indicator (TCI) state and the one or more type-1 resources are configured with at least two TCI states; identifying a plurality of hypotheses based at least in part on the Type 0 resource and the Type 1 resource; identifying a set of hypothesis groups based at least in part on the Type-0 resources, the Type-1 resources, and the plurality of hypotheses, wherein the plurality of hypotheses is divided into the set of hypothesis groups; and A set of channel state information (CSI) corresponding to the set of hypothesis groups is reported to one or more transmit reception points (TRPs) and for the set of hypothesis groups.

20. An apparatus for wireless communication, comprising: means for identifying a plurality of resource sets, wherein a resource set in the plurality of resource sets comprises one or more type-0 resources and one or more type-1 resources, wherein the one or more type-0 resources are configured with a single transmission configuration indicator (TCI) state and the one or more type-1 resources are configured with at least two TCI states; means for identifying a plurality of hypotheses based at least in part on the Type 0 resource and the Type 1 resource; means for identifying a set of hypothesis groups based at least in part on the Type-0 resources, the Type-1 resources, and the plurality of hypotheses, wherein the plurality of hypotheses is divided into the set of hypothesis groups; as well as Means for reporting, to one or more Transmission Reception Points (TRPs) and for the set of hypothesis groups, a set of channel state information (CSI) corresponding to the set of hypothesis groups.

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