Per-physical cell identifier configuration

Abstract

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive a plurality of configurations corresponding to a plurality of physical cell identifiers (PCIs), where the plurality of PCIs are associated with a serving cell of a base station, and where the plurality of configurations are based at least in part on respective remote radio heads (RRHs) of the base station; receiving information indicating the RRH in the corresponding RRHs or the PCI corresponding to the RRH; and performing communication with the RRH based at least in part on the PCI according to a configuration of a plurality of configurations corresponding to the PCI. Numerous other aspects are also provided.

Description

[0001] This application is a divisional application of the invention patent application with application number 2021800088307 filed on January 6, 2021 and invention name “Per-physical cell identifier configuration”.

[0002] CROSS-REFERENCE TO RELATED APPLICATIONS

[0003] This patent application claims priority to U.S. Provisional Patent Application No. 62 / 962,546, filed on January 17, 2020, entitled “PER-PHYSICAL CELL IDENTIFIER CONFIGURATION,” and U.S. Non-Provisional Patent Application No. 17 / 248,023, filed on January 5, 2021, entitled “PER-PHYSICAL CELL IDENTIFIER CONFIGURATION,” which are hereby expressly incorporated herein by reference. Technical Field

[0004] Aspects of the present disclosure relate generally to wireless communications, and to techniques and apparatus for per-physical cell identifier (per-PCI) configuration. Background Art

[0005] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support 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 released by the Third Generation Partnership Project (3GPP).

[0006] A wireless communication network may include several base stations (BSs) that may support communications for several user equipments (UEs). A UE may communicate with a BS via a downlink and an uplink. An uplink (or forward link) refers to a communication link from a BS to a UE, and a downlink (or reverse link) refers to a communication link from a UE to a BS. As will be described in detail herein, a BS may refer to a Node B, a gNB, an access point (AP), a radio head, a transmit receive point (TRP), a new radio (NR) BS, a 5G NodeB, etc.

[0007] The above-mentioned multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user equipment to communicate at the city level, national level, regional level, and even global level. NR, which can also be referred to as 5G, is a set of enhancements to the LTE mobile standard released by 3GPP. NR is designed to better support mobile broadband Internet access by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with cyclic prefix (CP) on the downlink (DL), using CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL) to better integrate with other open standards, and support beamforming, multiple input multiple output (MIMO) antenna technology and carrier aggregation. However, as the demand for mobile broadband access continues to grow, further improvements in LTE and NR technologies are needed. Preferably, these improvements should be applicable to other multiple access technologies and telecommunication standards that adopt these technologies. Summary of the invention

[0008] In some aspects, a method of wireless communication performed by a user equipment (UE) may include: receiving multiple configurations corresponding to multiple physical cell identifiers (PCIs), wherein the multiple PCIs are associated with service cells of a base station, and wherein the multiple configurations are based at least in part on corresponding remote radio heads (RRHs) of the base station; receiving information indicating a PCI corresponding to an RRH in the corresponding RRH or the RRH; and performing communication with the RRH based at least in part on the PCI according to a configuration in the multiple configurations corresponding to the PCI.

[0009] In some aspects, a method of wireless communication performed by a base station may include: sending multiple configurations corresponding to multiple PCIs to a UE, wherein the multiple PCIs are associated with a serving cell, and wherein the multiple configurations are based at least in part on corresponding RRHs associated with the serving cell; sending information indicating an RRH in the corresponding RRH or a PCI corresponding to the RRH; and performing communication using the RRH based at least in part on the PCI according to a configuration in the multiple configurations corresponding to the PCI.

[0010] 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: receive a plurality of configurations corresponding to a plurality of PCIs, wherein the plurality of PCIs are associated with a serving cell of a base station, and wherein the plurality of configurations are based at least in part on corresponding RRHs of the base station; receive information indicating an RRH in the corresponding RRH or a PCI corresponding to the RRH; and perform communication with the RRH based at least in part on the PCI according to a configuration in the plurality of configurations corresponding to the PCI.

[0011] In some aspects, a base station 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: send a plurality of configurations corresponding to a plurality of PCIs to a UE, wherein the plurality of PCIs are associated with a serving cell, and wherein the plurality of configurations are based at least in part on a corresponding RRH associated with the serving cell; send information indicating an RRH in the corresponding RRH or a PCI corresponding to the RRH; and perform communication using the RRH based at least in part on the PCI according to a configuration in the plurality of configurations corresponding to the PCI.

[0012] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a UE, may cause the one or more processors to: receive multiple configurations corresponding to multiple PCIs, wherein the multiple PCIs are associated with a serving cell of a base station, and wherein the multiple configurations are based at least in part on corresponding RRHs of the base station; receive information indicating an RRH in the corresponding RRH or a PCI corresponding to the RRH; and perform communication with the RRH based at least in part on the PCI according to a configuration in the multiple configurations corresponding to the PCI.

[0013] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a base station, may cause the one or more processors to: send a plurality of configurations corresponding to a plurality of PCIs to a UE, wherein the plurality of PCIs are associated with a serving cell, and wherein the plurality of configurations are based at least in part on corresponding RRHs associated with the serving cell; send information indicating an RRH in the corresponding RRH or a PCI corresponding to the RRH; and perform communication using the RRH based at least in part on the PCI according to a configuration in the plurality of configurations corresponding to the PCI.

[0014] In some aspects, an apparatus for wireless communication may include: a component for receiving multiple configurations corresponding to multiple PCIs, wherein the multiple PCIs are associated with a service cell of a base station and wherein the multiple configurations are based at least in part on corresponding RRHs of the base station; a component for receiving information indicating an RRH in the corresponding RRH or a PCI corresponding to the RRH; and a component for performing communication with the RRH based at least in part on the PCI according to a configuration in the multiple configurations corresponding to the PCI.

[0015] In some aspects, an apparatus for wireless communication may include: a component for sending multiple configurations corresponding to multiple PCIs to a UE, wherein the multiple PCIs are associated with a serving cell and wherein the multiple configurations are based at least in part on corresponding RRHs associated with the serving cell; a component for sending information indicating an RRH in the corresponding RRH or a PCI corresponding to the RRH; and a component for performing communication using the RRH based at least in part on the PCI according to a configuration in the multiple configurations corresponding to the PCI.

[0016] 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 substantially as described with reference to and as illustrated by the accompanying drawings.

[0017] The features and technical advantages of the examples according to the present disclosure have been outlined quite extensively above so that the subsequent detailed description can be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples can be easily used as the basis for modifying or designing other structures for the same purpose of implementing the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. When considered in conjunction with the accompanying drawings, the characteristics of the concepts disclosed herein, their organization and operation methods, and the associated advantages will be better understood from the following description. Each figure is provided for the purpose of illustration and description, and not as a definition of the limitations of the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order that the features of the present disclosure listed above may be understood in detail, a more specific description briefly summarized above may be made by reference to various aspects, some of which are illustrated in the accompanying drawings. However, it should be noted that the accompanying drawings illustrate only certain typical aspects of the present disclosure and are therefore not to be considered as limiting the scope thereof, as the description may admit of other equivalent aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0019] Figure 1 is a block diagram illustrating an example of a wireless communication network in accordance with various aspects of the present disclosure.

[0020] Figure 2 is a block diagram illustrating an example of a base station communicating with a UE in a wireless communication network according to various aspects of the present disclosure.

[0021] Figure 3 is a diagram illustrating an example of a configuration of multiple remote radio heads and multiple physical cell identifiers associated with the multiple remote radio heads according to various aspects of the present disclosure.

[0022] Figure 4 is a diagram illustrating an example process performed, for example, by a user device according to various aspects of the present disclosure.

[0023] Figure 5 is a diagram illustrating example processes performed, for example, by a base station according to various aspects of the present disclosure. DETAILED DESCRIPTION

[0024] 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. Rather, these aspects are provided so that the present disclosure will be exhaustive and complete, and the scope of the present disclosure is fully conveyed to those skilled in the art. Based on the teachings herein, it should be understood by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether implemented independently of any other aspect of the present disclosure or implemented in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein can be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such a device or method practiced using other structures, functionality, or structures and functionality other than 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 can be embodied by one or more elements of the claims.

[0025] Several aspects of telecommunication 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 referred to as "elements"). These elements may be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0026] It should be noted that although various aspects may be described herein using terminology generally associated with 5G or NR radio access technologies (RATs), various aspects of the present disclosure may be applicable to other RATs, such as 3G RATs, 4G RATs, and / or RATs after 5G (e.g., 6G).

[0027] Figure 1 is a diagram showing a wireless network 100 in which various 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 several 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" may refer to a coverage area of ​​a BS and / or a BS subsystem serving the coverage area, depending on the context in which the term is used.

[0028] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by 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, BS110a may be a macro BS for macro cell 102a, BS110b may be a pico BS for pico cell 102b, and BS110c may be a femto BS for femto cell 102c. The BS may support one or more (e.g., three) cells. The terms "eNB", "base station", "NR BS", "gNB", "TRP", "AP", "Node B", "5GNB", and "cell" may be used interchangeably herein.

[0029] In some aspects, the cells are not necessarily stationary, and the geographic area of ​​the cells may move according to the location of the mobile BS. In some aspects, the BSs may be interconnected to each other and / or to one or more other BSs or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces (such as direct physical connections, virtual networks, etc.) using any suitable transport network.

[0030] The wireless network 100 may also include a relay station. A relay station is an entity that can receive data transmissions from an upstream station (e.g., a BS or a UE) and send data transmissions to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that can relay transmissions for other UEs. Figure 1 In the example shown, relay BS 110d may communicate with macro BS 110a and UE 120d to facilitate communication between BS 110a and UE 120d. A relay BS may also be referred to as a relay station, relay base station, relay, or the like.

[0031] The wireless network 100 may be a heterogeneous network including different types of BSs (e.g., 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 effects 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).

[0032] A network controller 130 may be coupled 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, for example, directly or indirectly via a wireless or wired backhaul.

[0033] UE 120 (e.g., 120a, 120b, 120c) can be distributed throughout the wireless network 100, and each UE can be stationary or mobile. UE can also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. UE can be a cellular phone (smart phone), 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 biosensor / device, a wearable device (smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio), a component or sensor of a vehicle, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless medium or a wired medium.

[0034] Some UEs may be considered as 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 markers, etc. that can communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node may provide, for example, connectivity to or for 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 as Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (narrowband Internet of Things) devices. Some UEs may be considered as customer premises equipment (CPE). UE 120 may be included in a housing that houses components of UE 120 (such as processor components, memory components, etc.).

[0035] 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, frequency 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.

[0036] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary device for communicating with each other). For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocol (e.g., which may include vehicle-to-vehicle (V2V) protocol, vehicle-to-infrastructure (V2I) protocol, etc.), mesh network, etc. In this case, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base station 110.

[0037] The devices of the wireless network 100 can communicate using an electromagnetic spectrum, which can be subdivided into various levels, bands, channels, etc. based on frequency or wavelength. For example, the devices of the wireless network 100 can communicate using an operating band having a first frequency range (FR1) and / or can communicate using an operating band having a second frequency range (FR2), wherein FR1 can span from 410 MHz to 7.125 GHz and FR2 can span from 24.25 GHz to 52.6 GHz. Frequencies between FR1 and FR2 are sometimes referred to as mid-band frequencies. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to as a "sub-6 GHz" band. Similarly, FR2 is also often referred to as a "millimeter wave" band, although it is different from the extremely high frequency (EHF) band (30 GHz to 300 GHz) identified as a "millimeter wave" band by the International Telecommunication Union (ITU). Therefore, unless otherwise expressly stated, it should be understood that the term "below 6 GHz" and the like, if used herein, can broadly refer to frequencies less than 6 GHz, frequencies within FR1, and / or mid-band frequencies (e.g., greater than 7.125 GHz). Similarly, unless otherwise expressly stated, it should be understood that the term "millimeter wave" and the like, if used herein, can broadly refer to frequencies within the EHF band, frequencies within FR2, and / or mid-band frequencies (e.g., less than 24.25 GHz). It is contemplated that the frequencies included in FR1 and FR2 can be modified, and the techniques described herein are applicable to these modified frequency ranges.

[0038] As indicated above, Figure 1 are provided as examples. Other examples can be found in the Figure 1 The examples described are different.

[0039] Figure 2 A block diagram of a design 200 of a base station 110 and a UE 120 is shown. Base station 110 may be Figure 1 and UE 120 may be one of the base stations in 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.

[0040] At the base station 110, the transmit processor 220 may receive data for one or more UEs from the 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 (multiple) MCS selected for the UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI), etc.) and control information (e.g., CQI requests, grants, upper layer signaling, etc.), and provide overhead symbols and control symbols. The 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 (MOD) 232a to 232t. Each modulator 232 may process a corresponding 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 up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a to 232t may be transmitted via T antennas 234a to 234t, respectively. According to various aspects described in more detail below, a synchronization signal may be generated using position coding to convey additional information.

[0041] At UE 120, antennas 252a to 252r may receive downlink signals from base station 110 and / or other base stations, and may provide received signals to demodulators (DEMOD) 254a to 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, down-convert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. A receive processor 258 may 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.

[0042] On the uplink, at the 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 the UE 120 and other UEs may be received by the antenna 234, processed by the demodulator 232, detected by the MIMO detector 236 (if applicable), and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and may provide the decoded control information to the controller / processor 240. The base station 110 may include a communication unit 244 and may communicate to 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.

[0043] 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 base station 110 may perform one or more techniques associated with per-physical cell identifier (per-PCI) configuration of multiple remote radio heads (RRHs), as described in more detail elsewhere herein. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the can perform e.g. Figure 4 The process of 400 Figure 5 The process 500 and / or other processes as described herein or direct their operation. The memories 242 and 282 may store data and program codes for the base station 110 and the UE 120, respectively. In some aspects, the memory 242 and / or the memory 282 may include a non-transitory computer-readable medium storing one or more instructions for wireless communication. For example, when the one or more instructions are executed by one or more processors of the base station 110 and / or the UE 120, the execution may be performed, for example Figure 4 The process of 400 Figure 5 The process 500 and / or other processes as described herein may be used to perform or direct their operation. The scheduler 246 may schedule UEs for data transmission on the downlink and / or uplink.

[0044] In some aspects, the UE 120 may include: a component for receiving multiple configurations corresponding to multiple PCIs, wherein the multiple PCIs are associated with a serving cell of a base station, and wherein the multiple configurations are based at least in part on corresponding remote radio heads (RRHs) of the base station; a component for receiving information indicating an RRH in a corresponding RRH or a PCI corresponding to the RRH; a component for performing communication with the RRH based at least in part on the PCI according to a configuration in a plurality of configurations corresponding to the PCI; a component for receiving one or more synchronization signal blocks from the RRH based at least in part on the configuration; a component for reporting measurements based at least in part on the one or more synchronization signal blocks, wherein the information indicating the RRH is based at least in part on the measurement; a component for performing a radio link monitoring operation or a beam failure recovery operation for all PCIs in the plurality of PCIs based at least in part on the plurality of configurations; a component for performing a radio link monitoring operation or a beam failure recovery operation for a proper subset of the plurality of PCIs based at least in part on the plurality of configurations; etc. In some aspects, such components may include a combination of 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, etc.

[0045] In some aspects, the base station 110 may include: a component for sending a plurality of configurations corresponding to a plurality of PCIs to the UE, wherein the plurality of PCIs are associated with a serving cell, and wherein the plurality of configurations are based at least in part on a corresponding RRH associated with the serving cell; a component for sending information indicating an RRH in a corresponding RRH or a PCI corresponding to the RRH; a component for performing communication using the RRH based at least in part on the PCI according to a configuration in a plurality of configurations corresponding to the PCI; a component for sending a corresponding synchronization signal block from the corresponding RRH based at least in part on the plurality of configurations; a component for receiving information indicating one or more measurements based at least in part on the corresponding synchronization signal block; a component for selecting an RRH or a PCI based at least in part on the information indicating one or more measurements; a component for sending information indicating the RRH based at least in part on selecting the RRH or the PCI; etc. In some aspects, such components may include a combination of Figure 2 One or more components of base station 110 are depicted, such as antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, and the like.

[0046] As indicated above, Figure 2 are provided as examples. Other examples can be found in the Figure 2 The examples described are different.

[0047] In some deployments, a base station such as a gNB can be associated with multiple RRHs. RRHs, also known as remote radio units (RRUs), are remote radio transceivers (e.g., remote relative to the gNB). RRHs can extend the coverage of base stations in challenging environments such as rural areas, buildings, and tunnels. In some cases, a base station can provide a cell associated with a PCI. In the case where a base station is associated with multiple RRHs, the service cell provided by the base station can be configured with multiple PCIs, and the multiple RRHs can each have a corresponding PCI. Thus, each RRH can use a corresponding PCI and can send a full set of synchronization signal block (SSB) identifiers for the base station or service cell. The DCI or medium access control control element (MAC-CE) can then select which (which) RRHs or corresponding PCIs will serve the UE based at least in part on the SSB reference signal received power (RSRP) report.

[0048] However, when a base station is associated with multiple RRHs with corresponding PCIs, configuring multiple RRHs may be problematic. For example, if the PCIs of all RRHs are configured according to a serving cell configuration (e.g., a cell range configuration), the base station may perform suboptimally because different RRHs may be associated with different radio frequency characteristics, hardware configurations, locations, etc. In addition, individual RRHs may be associated with certain characteristics that a macro cell is not associated with, such as certain spatial transmission characteristics, etc.

[0049] Some techniques and devices described herein provide per-PCI configurations for multiple RRHs of a base station. For example, a base station may provide corresponding radio resource control (RRC) configurations for multiple PCIs corresponding to multiple RRHs. Multiple RRC configurations may be based at least in part on the characteristics of multiple RRHs and may differ from one RRH to the next. For example, the RRC configuration may be specific to the RRH and may be based at least in part on the radio frequency characteristics, measurements, or spatial characteristics of the RRH. In this way, the UE may be configured with multiple configurations for the corresponding PCI and RRH. The UE may provide measurement information for the RRH based at least in part on multiple configurations, and may receive information indicating a specific PCI or RRH to be used for communication with the base station. The UE and the base station may communicate using configuration information corresponding to a specific PCI or RRH. In this way, RRH-specific configurations may be enabled for base stations associated with multiple RRHs, thereby improving the performance and throughput of the base station and the UE, particularly for deployments involving many RRHs. RRC-specific configurations may be beneficial to inter-cell mobility, such as inter-cell mobility centered on layer 1 / layer 2 (L1 / L2).

[0050] Figure 3 is a diagram illustrating an example 300 of a configuration of multiple remote radio heads and multiple physical cell identifiers associated with the multiple remote radio heads in accordance with various aspects of the present disclosure. As shown, the example 300 includes a UE 120 and a BS 110. As further shown, the BS 110 is associated with multiple RRHs, shown as RRH 1 to RRH N. For example, the BS 110 may manage or configure multiple RRHs (e.g., may be a gNB of multiple RRHs).

[0051] As indicated by reference numeral 310, BS 110 may provide configuration information for a plurality of RRHs. As shown, each RRH may be associated with a corresponding PCI, and the configuration information may include a corresponding configuration for each paired PCI / RRH. In some aspects, the configuration information may be provided via RRC signaling, such as via one or more system information blocks or via dedicated RRC signaling.

[0052] Configuration information for the RRH of BS 110 may identify parameters for measurement or communication between UE 120 and the RRH. The configuration information may be specified per PCI. Examples of parameters indicated by the configuration are provided below.

[0053] In some aspects, the configuration information may identify an SSB configuration, such as an SSB periodicity, an SSB position in a burst, a power level of an SSB, a position of a demodulation reference signal (DMRS), and the like. The SSB periodicity may identify a periodicity at which an SSB is transmitted (e.g., 5ms, 10ms, 20ms, 40ms, 80ms, 160ms, etc.). The SSB position in a burst may indicate a time domain position of an SSB in a burst. For example, the first bit in a bitmap may indicate a first SSB (e.g., SS / physical broadcast channel (SS / PBCH)) index, the second bit may indicate a second SSB index, and so on. In some aspects, the configuration may identify a subcarrier spacing configured for an SSB. The subcarrier spacing indicates the frequency width of a subcarrier on a PCI and may be used to determine a symbol length for the PCI. Thus, the BS 110 may enable per-PCI measurements based at least in part on the SSB configuration and / or the subcarrier spacing, which enables the UE 120 to reselect between PCIs of a single cell (such as a single serving cell provided by the BS 110).

[0054] In some aspects, the configuration information may identify remaining minimum system information (RMSI) or a random access configuration for the PCI. For example, the configuration information may indicate resources for the RMSI, a control resource set configuration for the RMSI (e.g., information indicating a control resource set in which one or more physical downlink control channel (PDCCH) candidates for the RMSI may be configured), a subcarrier spacing for the RMSI, random access resources associated with performing random access for the PCI, a random access preamble space indicating a random access preamble set for the PCI, a random access type for the PCI (e.g., two-step versus four-step random access), and the like.

[0055] In some aspects, the configuration information may identify a rate matching pattern for a PCI. For example, the configuration information may identify one or more reference signals or other resources around which rate matching will be performed on communications associated with the PCI. In some aspects, the configuration information may indicate a downlink (DL) and / or uplink (UL) time division duplex (TDD) configuration for the PCI. For example, the configuration information may indicate the pattern of uplink slots, downlink slots, and special slots configured for TDD. In some aspects, the configuration information may indicate a supplementary uplink (SUL) configuration for the PCI. For example, the configuration information may indicate a supplementary uplink carrier associated with a downlink / uplink carrier of the PCI. In some aspects, the configuration information may indicate a DL and / or UL cell frequency location, such as a center frequency of one or more cells associated with the PCI. In some aspects, the configuration information may indicate a DL / UL bandwidth part (BWP) configuration at a per-PCI granularity, such as a BWP set that can be activated, a center frequency of the BWP, a bandwidth of the BWP, a subcarrier spacing of the BWP, and the like.

[0056] In some aspects, the configuration information may indicate a channel configuration for PCI, such as a PDCCH configuration, a physical downlink shared channel (PDSCH) configuration, a physical uplink shared channel (PUSCH) configuration, a physical uplink control channel (PUCCH) configuration, a sounding reference signal (SRS) configuration, etc.

[0057] In some aspects, the configuration information may indicate a channel state information (CSI) measurement and / or reporting configuration for PCI, such as CSI measurement resources, CSI reporting resources, thresholds for measurement reports, etc. In some aspects, the configuration information may indicate a timing advance group (TAG) identifier for PCI, which may indicate the TAG to which the PCI belongs. A TAG is a group of cells associated with a common timing advance (TA). A TA is a time adjustment applied to uplink transmissions associated with a cell to mitigate propagation delays. In some aspects, the configuration information may indicate a cross-carrier scheduling configuration for PCI, such as a configuration indicating whether cross-carrier scheduling is enabled for PCI.

[0058] In some aspects, the configuration information may indicate a transmission configuration indicator (TCI) state or a spatial relationship configuration for the PCI. For example, the configuration information may indicate a DL TCI state or an UL spatial relationship configuration to be used for communications associated with the PCI. In some aspects, the DL TCI state or the UL spatial relationship configuration may be based at least in part on characteristics of the RRH corresponding to the PCI, such as a beam set available by the RRH, a transmission direction associated with the RRH, etc.

[0059] In some aspects, the configuration information may indicate that the hybrid automatic repeat request (HARQ) process identifier space of the serving cell of BS110 will be replicated for multiple PCIs. This may mean that each PCI can use the full HARQ process identifier space for the corresponding HARQ process, which can enable more robust HARQ feedback for each PCI. In some aspects, the configuration information may indicate that the HARQ process identifier space will be divided or split between two or more PCIs, which means that each PCI in the two or more PCIs can use a true subset of the HARQ process identifier space. This can reduce the overhead and complexity associated with HARQ feedback for each PCI. The HARQ process identifier space of a cell (or PCI) identifies a set of HARQ processes that can be used for communication via the cell (or PCI). Examples of HARQ process identifier spaces include 8 HARQ process identifiers and 16 HARQ process identifiers.

[0060] In some aspects, the configuration information may indicate whether beam failure recovery (BFR) or radio link monitoring (RLM) for a serving cell is to be performed on one or more PCIs. For example, in some aspects, BFR or RLM may be performed on all PCIs in a plurality of PCIs, which may improve the reliability of the serving cell by increasing the set of possible PCIs for BFR or RLM. In some aspects, BFR or RLM may be performed on a proper subset of PCIs in a plurality of PCIs, which may reduce overhead relative to performing BFR or RLM on all PCIs in a plurality of PCIs. The configuration information may indicate the set of PCIs on which BFR or RLM is to be performed.

[0061] In some aspects, the configuration information may indicate that the control resource set (CORESET) identifier space of the serving cell will be replicated for multiple PCIs. This may mean that each PCI can use the full CORESET identifier space, which increases the flexibility of CORESET scheduling. In some aspects, the configuration information may indicate that the CORESET identifier space will be divided or split between two or more PCIs, which means that each of the two or more PCIs can use a true subset of the CORESET identifier space. This can reduce the overhead and complexity associated with HARQ feedback for each PCI. When the CORESET identifier space is split across two or more PCIs, each CORESET identifier can be associated with a corresponding PCI index or a corresponding SSB set index, where the corresponding SSB set index is associated with one or more PCIs.

[0062] In some aspects, the configuration information may indicate an initial downlink BWP, one or more downlink BWPs for release or addition, a first active downlink BWP, and / or a BWP inactivity timer for a BWP associated with a PCI. In some aspects, the configuration information may indicate a secondary cell deactivation timer for a PCI, which may indicate a length of time after which the UE 120 will deactivate or release the secondary cell if no communication is performed on the secondary cell during the length of time. In some aspects, the configuration information may indicate a path loss reference signal linkage configuration, which may indicate a relationship between a special cell (e.g., a primary cell or a primary secondary cell) and a secondary cell, such that the UE may determine a path loss value for the secondary cell based at least in part on a path loss reference signal associated with the primary cell. In some aspects, the serving cell configuration may indicate a timing advance offset, which indicates a timing advance to be applied to uplink communications associated with the PCI.

[0063] As indicated by reference numeral 320, BS 110 may transmit multiple SSBs using multiple RRHs. For example, BS 110 may transmit multiple SSBs according to corresponding SSB configurations of the multiple RRHs. As indicated by reference numeral 330, UE 120 may transmit measurement information about multiple SSBs to BS 110. For example, UE 120 may perform measurement of multiple SSBs according to the measurement configuration indicated by the configuration information. UE 120 may provide the measurement information to BS 110 so that BS 110 may select an appropriate RRH for communication with UE 120. The measurement information may indicate, for example, reference signal received power (RSRP) values ​​of the multiple SSBs.

[0064] As indicated by reference numeral 340, BS 110 may select a PCI or an RRH for communication with UE 120 based at least in part on the measurement information. Here, BS 110 selects RRH 1. For example, BS 110 may select RRH 1 based at least in part on measurement information for RRH 1 satisfying a threshold relative to measurement information associated with other RRHs, based at least in part on a load balancing issue, etc.

[0065] As indicated by reference numeral 350, BS 110 may send an indication of a specific RRH or PCI that UE 120 will use for communication with BS 110. In some aspects, BS 110 may send the indication using downlink control information (DCI), a medium access control (MAC) control element (CE), etc. Here, the specific RRH or PCI is RRH1 corresponding to PCI 1 as selected by BS 110.

[0066] As indicated by reference numeral 360, UE 120 and BS 110 may communicate via RRH 1 based at least in part on a configuration corresponding to RRH 1. For example, UE 120 may connect to a serving cell provided by BS 110 via RRH 1. In some aspects, UE 120 may perform a random access procedure with respect to RRH 1 or PCI 1, for example, based on the configuration information. In some aspects, UE 120 may perform an intra-cell, inter-PCI handover procedure to handover from another PCI or RRH provided by BS 110 to RRH 1 and / or PCI 1, such as an intra-cell mobility operation centered around L1 / L2.

[0067] As indicated above, Figure 3 are provided as examples. Other examples can be compared with Figure 3 The examples described are different.

[0068] Figure 4 4 is a diagram illustrating an example process 400 performed, for example, by a UE in accordance with various aspects of the present disclosure. Example process 400 is an example of a UE (eg, UE 120, etc.) performing operations associated with per-PCI configuration of RRH sets.

[0069] like Figure 4 As shown, in some aspects, process 400 may include: receiving multiple configurations corresponding to multiple PCIs, wherein the multiple PCIs are associated with a serving cell of a base station, and wherein the multiple configurations are based at least in part on the corresponding RRHs of the base station (block 410). For example, a UE (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, etc.) may receive multiple configurations corresponding to multiple PCIs, as described above. In some aspects, the multiple PCIs are associated with a serving cell of a base station. In some aspects, the multiple configurations are based at least in part on the corresponding RRHs of the base station.

[0070] like Figure 4 As further shown, in some aspects, process 400 may include receiving information indicating an RRH in the corresponding RRHs or a PCI corresponding to the RRH (block 420). For example, the UE (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, etc.) may receive information indicating an RRH in the corresponding RRHs or a PCI corresponding to the RRH, as described above.

[0071] like Figure 4As further shown, in some aspects, process 400 may include performing communications with the RRH based at least in part on the PCI according to a configuration in a plurality of configurations corresponding to the PCI (block 430). For example, the UE (e.g., using controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, etc.) may perform communications with the RRH based at least in part on the PCI according to a configuration in a plurality of configurations corresponding to the PCI, as described above.

[0072] Process 400 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0073] In the first aspect, a plurality of PCIs correspond to respective RRHs.

[0074] In a second aspect, alone or in combination with the first aspect, process 400 includes: receiving one or more synchronization signal blocks from the RRH based at least in part on the configuration, and reporting measurements based at least in part on the one or more synchronization signal blocks, wherein the information indicating the RRH is based at least in part on the measurements.

[0075] In a third aspect, alone or in combination with one or more of the first and second aspects, the plurality of configurations indicates synchronization signal block configurations of a plurality of PCIs.

[0076] In a fourth aspect, alone or in combination with one or more of the first to third aspects, a plurality of configurations indicate subcarrier spacings of a plurality of PCIs.

[0077] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the plurality of configurations indicates remaining minimum system information or random access configurations of a plurality of PCIs.

[0078] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the plurality of configurations indicate rate matching patterns of the plurality of PCIs.

[0079] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the plurality of configurations indicates time division duplex configurations of the plurality of PCIs.

[0080] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the plurality of configurations indicate supplemental uplink configurations of a plurality of PCIs.

[0081] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, a plurality of configurations indicate cell frequency locations of a plurality of PCIs.

[0082] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, the plurality of configurations indicates bandwidth portion configurations of the plurality of PCIs.

[0083] In the eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the plurality of configurations indicate at least one of data channel configurations, control channel configurations, or reference signal configurations of the plurality of PCIs.

[0084] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the plurality of configurations indicates at least one of the channel state information measurement or reporting configurations of the plurality of PCIs.

[0085] In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, a plurality of timing advance group indicators are configured to indicate a plurality of PCIs.

[0086] In a fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, the plurality of configurations indicate cross-carrier scheduling configurations of a plurality of PCIs.

[0087] In a fifteenth aspect, alone or in combination with one or more of the first to fourteenth aspects, the plurality of configurations indicate transport configuration indicator states or spatial relationship configurations of a plurality of PCIs.

[0088] In a sixteenth aspect, alone or in combination with one or more of the first to fifteenth aspects, a hybrid automatic repeat request (HARQ) process identifier space of a serving cell is replicated for two or more of the plurality of PCIs.

[0089] In the seventeenth aspect, alone or in combination with one or more of the first to sixteenth aspects, a first PCI among the multiple PCIs is associated with a first part of the HARQ process identifier space of the serving cell, and a second PCI among the multiple PCIs is associated with a second part of the HARQ process identifier space of the serving cell.

[0090] In an eighteenth aspect, alone or in combination with one or more of the first to seventeenth aspects, the process 400 includes: performing a radio link monitoring operation or a beam failure recovery operation for all PCIs in a plurality of PCIs based at least in part on a plurality of configurations.

[0091] In a nineteenth aspect, alone or in combination with one or more of the first to eighteenth aspects, the process 400 comprises: performing a radio link monitoring operation or a beam failure recovery operation for a proper subset of a plurality of PCIs based at least in part on a plurality of configurations.

[0092] In a twentieth aspect, alone or in combination with one or more of the first to nineteenth aspects, a control resource set identifier space of a serving cell is replicated for two or more PCIs of a plurality of PCIs.

[0093] In a twenty-first aspect, alone or in combination with one or more of the first to twentieth aspects, a control resource set identifier space of a serving cell is divided among two or more PCIs of a plurality of PCIs.

[0094] In aspect twenty-second, alone or in combination with one or more of aspects one to twenty-first, one or more control resource set identifiers of the control resource set identifier space are associated with one or more corresponding PCI indexes or one or more corresponding SSB set indexes.

[0095] although Figure 4 Example blocks of process 400 are shown, but in some aspects, process 400 may include blocks other than Figure 4 Additional blocks, fewer blocks, different blocks, or differently arranged blocks to those depicted in the process 400 may be performed in parallel. Additionally or alternatively, two or more of the blocks of process 400 may be performed in parallel.

[0096] Figure 5 is a diagram illustrating an example process 500, performed, for example, by a base station, in accordance with various aspects of the present disclosure. Example process 500 is an example of a base station (eg, BS 110, etc.) performing operations associated with per-PCI configuration of RRH sets.

[0097] like Figure 5 As shown, in some aspects, process 500 may include: sending a plurality of configurations corresponding to a plurality of PCIs to a UE, wherein the plurality of PCIs are associated with a serving cell, and wherein the plurality of configurations are based at least in part on corresponding RRHs associated with the serving cell (block 510). For example, a base station (e.g., using controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, etc.) may send a plurality of configurations corresponding to a plurality of PCIs to a UE, as described above. In some aspects, the plurality of PCIs are associated with a serving cell. In some aspects, the plurality of configurations are based at least in part on corresponding RRHs associated with the serving cell.

[0098] like Figure 5As further shown, in some aspects, process 500 may include sending information indicating an RRH in the corresponding RRH or a PCI corresponding to the RRH (block 520). For example, a base station (e.g., using controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, etc.) may send information indicating an RRH in the corresponding RRH or a PCI corresponding to the RRH, as described above.

[0099] like Figure 5 As further shown, in some aspects, process 500 may include performing communications using the RRHs based at least in part on the PCI according to a configuration in a plurality of configurations corresponding to the PCI (block 530). For example, a base station (e.g., using antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, etc.) may perform communications using the RRHs based at least in part on the PCI according to a configuration in a plurality of configurations corresponding to the PCI, as described above.

[0100] Process 500 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0101] In the first aspect, a plurality of PCIs correspond to respective RRHs.

[0102] In a second aspect, alone or in combination with the first aspect, process 500 includes: sending corresponding synchronization signal blocks from corresponding RRHs based at least in part on multiple configurations; receiving information indicating one or more measurements based at least in part on the corresponding synchronization signal blocks; selecting an RRH or PCI based at least in part on the information indicating one or more measurements; and sending information indicating the RRH based at least in part on selecting the RRH or PCI.

[0103] In a third aspect, alone or in combination with one or more of the first and second aspects, the plurality of configurations indicates synchronization signal block configurations of a plurality of PCIs.

[0104] In a fourth aspect, alone or in combination with one or more of the first to third aspects, a plurality of configurations indicate subcarrier spacings of a plurality of PCIs.

[0105] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the plurality of configurations indicates remaining minimum system information or random access configurations of a plurality of PCIs.

[0106] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the plurality of configurations indicate rate matching patterns of the plurality of PCIs.

[0107] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the plurality of configurations indicates time division duplex configurations of the plurality of PCIs.

[0108] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the plurality of configurations indicate supplemental uplink configurations of a plurality of PCIs.

[0109] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, a plurality of configurations indicate cell frequency locations of a plurality of PCIs.

[0110] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, the plurality of configurations indicates bandwidth portion configurations of the plurality of PCIs.

[0111] In the eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the plurality of configurations indicate at least one of data channel configurations, control channel configurations, or reference signal configurations of the plurality of PCIs.

[0112] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the plurality of configurations indicates at least one of the channel state information measurement or reporting configurations of the plurality of PCIs.

[0113] In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, a plurality of timing advance group indicators are configured to indicate a plurality of PCIs.

[0114] In a fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, the plurality of configurations indicate cross-carrier scheduling configurations of a plurality of PCIs.

[0115] In a fifteenth aspect, alone or in combination with one or more of the first to fourteenth aspects, the plurality of configurations indicate transport configuration indicator states or spatial relationship configurations of a plurality of PCIs.

[0116] In a sixteenth aspect, alone or in combination with one or more of the first to fifteenth aspects, a HARQ process identifier space of a serving cell is replicated for two or more PCIs of a plurality of PCIs.

[0117] In the seventeenth aspect, alone or in combination with one or more of the first to sixteenth aspects, a first PCI among the multiple PCIs is associated with a first part of the HARQ process identifier space of the serving cell, and a second PCI among the multiple PCIs is associated with a second part of the HARQ process identifier space of the serving cell.

[0118] In an eighteenth aspect, alone or in combination with one or more of the first to seventeenth aspects, a control resource set identifier space of a serving cell is replicated for two or more PCIs of a plurality of PCIs.

[0119] In a nineteenth aspect, alone or in combination with one or more of the first to eighteenth aspects, a control resource set identifier space of a serving cell is divided among two or more PCIs of a plurality of PCIs.

[0120] In the twentieth aspect, alone or in combination with one or more of the first to nineteenth aspects, one or more control resource set identifiers of the control resource set identifier space are associated with one or more corresponding PCI indexes or one or more corresponding SSB set indexes.

[0121] although Figure 5 Example blocks of process 500 are shown, but in some aspects, process 500 may include blocks other than Figure 5 Additional blocks, fewer blocks, different blocks, or differently arranged blocks to those depicted in the process 500 may be performed in parallel. Additionally or alternatively, two or more of the blocks of process 500 may be performed in parallel.

[0122] The following provides an overview of some aspects of the disclosure:

[0123] Aspect 1: A method of wireless communication performed by a user equipment (UE), comprising: receiving multiple configurations corresponding to multiple physical cell identifiers (PCIs), wherein the multiple PCIs are associated with service cells of a base station, and wherein the multiple configurations are at least partially based on corresponding remote radio heads (RRHs) of the base station; receiving information indicating a PCI corresponding to an RRH in the corresponding RRH or the RRH; and performing communication with the RRH based at least partially on the PCI according to a configuration in the multiple configurations corresponding to the PCI.

[0124] Aspect 2: The method according to aspect 1, wherein the plurality of PCIs correspond to corresponding RRHs.

[0125] Aspect 3: The method according to Aspect 1 further includes: receiving one or more synchronization signal blocks from the RRH based at least in part on the configuration; and reporting measurements based at least in part on the one or more synchronization signal blocks, wherein the information indicating the RRH is based at least in part on the measurement.

[0126] Aspect 4: The method according to Aspect 1, wherein the plurality of configurations indicate synchronization signal block configurations of a plurality of PCIs.

[0127] Aspect 5: The method according to Aspect 1, wherein the plurality of configurations indicate subcarrier spacings of a plurality of PCIs.

[0128] Aspect 6: The method according to aspect 1, wherein the plurality of configurations indicate remaining minimum system information or random access configurations of a plurality of PCIs.

[0129] Aspect 7: The method according to Aspect 1, wherein the plurality of configurations indicate rate matching patterns of a plurality of PCIs.

[0130] Aspect 8: The method according to aspect 1, wherein the plurality of configurations indicate time division duplex configurations of a plurality of PCIs.

[0131] Aspect 9: The method according to aspect 1, wherein the plurality of configurations indicate supplemental uplink configurations of a plurality of PCIs.

[0132] Aspect 10: The method according to Aspect 1, wherein the multiple configurations indicate cell frequency locations of multiple PCIs.

[0133] Aspect 11: The method according to Aspect 1, wherein the plurality of configurations indicate bandwidth portion configurations of a plurality of PCIs.

[0134] Aspect 12: The method according to aspect 1, wherein the plurality of configurations indicate at least one of data channel configurations, control channel configurations, or reference signal configurations of the plurality of PCIs.

[0135] Aspect 13: The method according to Aspect 1, wherein the multiple configurations indicate at least one of channel state information measurement configurations or reporting configurations of multiple PCIs.

[0136] Aspect 14: The method according to aspect 1, wherein the plurality of configurations indicate timing advance group identifiers of a plurality of PCIs.

[0137] Aspect 15: The method according to Aspect 1, wherein the multiple configurations indicate cross-carrier scheduling configurations of multiple PCIs.

[0138] Aspect 16: The method according to aspect 1, wherein the plurality of configurations indicate transmission configuration indicator states or spatial relationship configurations of a plurality of PCIs.

[0139] Aspect 17: The method according to aspect 1, wherein a hybrid automatic repeat request (HARQ) process identifier space of the serving cell is replicated for two or more PCIs of the plurality of PCIs.

[0140] Aspect 18: A method according to Aspect 1, wherein a first PCI among multiple PCIs is associated with a first part of a hybrid automatic repeat request (HARQ) process identifier space of a serving cell, and a second PCI among multiple PCIs is associated with a second part of the HARQ process identifier space of the serving cell.

[0141] Aspect 19: The method according to aspect 1 further includes: performing a radio link monitoring operation or a beam failure recovery operation for all PCIs in the plurality of PCIs based at least in part on the plurality of configurations.

[0142] Aspect 20: The method according to aspect 1 further comprises: performing a radio link detection operation or a beam failure recovery operation for a proper subset of the plurality of PCIs based at least in part on the plurality of configurations.

[0143] Aspect 21: The method according to aspect 1, wherein the control resource set identifier space of the serving cell is replicated for two or more PCIs among the multiple PCIs.

[0144] Aspect 22: The method according to aspect 1, wherein the control resource set identifier space of the serving cell is divided among two or more PCIs of the plurality of PCIs.

[0145] Aspect 23: The method according to Aspect 22, wherein one or more control resource set identifiers of the control resource set identifier space are associated with one or more corresponding PCI indexes or one or more corresponding SSB set indexes.

[0146] Aspect 24: A method of wireless communication performed by a base station, comprising: sending multiple configurations corresponding to multiple physical cell identifiers (PCIs) to a user equipment (UE), wherein the multiple PCIs are associated with a serving cell, and wherein the multiple configurations are at least partially based on a corresponding remote radio head (RRH) associated with the serving cell; sending information indicating an RRH in the corresponding RRH or a PCI corresponding to the RRH; and performing communication using the RRH based at least partially on the PCI according to a configuration in the multiple configurations corresponding to the PCI.

[0147] Aspect 25: The method according to Aspect 24, wherein the plurality of PCIs correspond to corresponding RRHs.

[0148] Aspect 26: According to the method of Aspect 24, it also includes: sending a corresponding synchronization signal block from a corresponding RRH at least in part based on multiple configurations; receiving information indicating one or more measurements based at least in part on the corresponding synchronization signal block; selecting an RRH or PCI at least in part based on the information indicating one or more measurements; and sending information indicating the RRH at least in part based on selecting the RRH or PCI.

[0149] Aspect 27: The method according to Aspect 24, wherein the plurality of configurations indicate synchronization signal block configurations of a plurality of PCIs.

[0150] Aspect 28: The method according to Aspect 24, wherein the plurality of configurations indicate subcarrier spacings of a plurality of PCIs.

[0151] Aspect 29: The method according to Aspect 24, wherein the plurality of configurations indicate remaining minimum system information or random access configurations of a plurality of PCIs.

[0152] Aspect 30: The method according to Aspect 24, wherein the plurality of configurations indicate rate matching patterns of a plurality of PCIs.

[0153] Aspect 31: The method according to aspect 24, wherein the plurality of configurations indicate time division duplex configurations of a plurality of PCIs.

[0154] Aspect 32: The method according to Aspect 24, wherein the plurality of configurations indicate supplemental uplink configurations for a plurality of PCIs.

[0155] Aspect 33: The method according to Aspect 24, wherein the multiple configurations indicate cell frequency locations of multiple PCIs.

[0156] Aspect 34: The method according to Aspect 24, wherein the plurality of configurations indicate bandwidth portion configurations of a plurality of PCIs.

[0157] Aspect 35: The method according to aspect 24, wherein the plurality of configurations indicate at least one of data channel configurations, control channel configurations, or reference signal configurations of the plurality of PCIs.

[0158] Aspect 36: The method according to Aspect 24, wherein the plurality of configurations indicate at least one of channel state information measurement configurations or reporting configurations of a plurality of PCIs.

[0159] Aspect 37: The method according to Aspect 24, wherein the plurality of configurations indicate timing advance group identifiers of a plurality of PCIs.

[0160] Aspect 38: The method according to Aspect 24, wherein the plurality of configurations indicate cross-carrier scheduling configurations of a plurality of PCIs.

[0161] Aspect 39: The method according to Aspect 24, wherein the plurality of configurations indicate transport configuration indicator states or spatial relationship configurations of a plurality of PCIs.

[0162] Aspect 40: The method according to aspect 24, wherein a hybrid automatic repeat request (HARQ) process identifier space of the serving cell is replicated for two or more PCIs of the plurality of PCIs.

[0163] Aspect 41: A method according to Aspect 24, wherein a first PCI among the multiple PCIs is associated with a first part of a hybrid automatic repeat request (HARQ) process identifier space of a serving cell, and a second PCI among the multiple PCIs is associated with a second part of the HARQ process identifier space of the serving cell.

[0164] Aspect 42: The method according to Aspect 24, wherein the control resource set identifier space of the serving cell is replicated for two or more PCIs of the plurality of PCIs.

[0165] Aspect 43: The method according to Aspect 24, wherein the control resource set identifier space of the serving cell is divided among two or more PCIs of the plurality of PCIs.

[0166] Aspect 44: The method according to Aspect 43, wherein one or more control resource set identifiers of the control resource set identifier space are associated with one or more corresponding PCI indexes or one or more corresponding SSB set indexes.

[0167] Aspect 45: An apparatus for wireless communication at a device, 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 one or more methods of Aspects 1 to 44.

[0168] Aspect 46: A device for wireless communication, comprising: a memory; and one or more processors coupled to the memory, the memory and the one or more processors being configured to perform the method of one or more aspects of aspects 1 to 44.

[0169] Aspect 47: An apparatus for wireless communication, comprising: at least one component for performing the method of one or more aspects of aspects 1 to 44.

[0170] Aspect 48: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more aspects of aspects 1 to 44.

[0171] Aspect 49: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method of one or more of aspects 1 to 44.

[0172] 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 may be made in light of the above disclosure or may be acquired from practice of the aspects.

[0173] 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.

[0174] As used herein, satisfying a threshold may refer to a value that is 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.

[0175] It will be apparent that the systems and / or methods described herein can be implemented in various forms of hardware, firmware, and / or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods is not a limitation of the various aspects. Therefore, the operation and behavior of the systems and / or methods are described herein without reference to specific software code - it should be understood that software and hardware can be designed to implement the systems and / or methods based at least in part on the description herein.

[0176] Even if a specific combination of features is recorded in the claims or disclosed in the specification, these combinations are not intended to limit the disclosure of each aspect. In fact, many of these features can be combined in a manner that is not clearly recorded in the claims and / or not disclosed in the specification. Although each dependent claim listed below can be directly subordinate to only one claim, the disclosure of each aspect includes each dependent claim combined with each other claim in the claim set. The phrases quoted to "at least one" in the list of items refer to any combination of those 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 of the same elements in multiples (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc and ccc or any other ordering of a, b and c).

[0177] Unless explicitly described as such, the elements, actions or instructions used herein should not be interpreted as key or necessary elements, actions or instructions. Likewise, as used herein, the articles "one" 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, combinations of related items and unrelated items, etc.), and can be used interchangeably with "one or more". In the case of only one item being intended, the phrase "only one" or similar language is used. Likewise, as used herein, the terms "have", "have", "have" etc. are intended to be open terms. In addition, the phrase "based on" is intended to mean "based at least in part on", unless otherwise explicitly stated.

Claims

1. A user equipment (UE) for wireless communication, comprising: one or more memories; as well as one or more processors coupled to the one or more memories, the one or more processors being configured to: receiving a plurality of configurations corresponding to a plurality of physical cell identifiers (PCIs), wherein the plurality of PCIs are associated with a serving cell, and wherein the plurality of configurations are based at least in part on synchronization signal block configurations of corresponding transmit reception points (TRPs) and indicating the plurality of PCIs; receiving information indicating a TRP in the corresponding TRP or a PCI corresponding to the TRP; and Communication with the TRP is performed at least partially based on the PCI according to a configuration among the multiple configurations that corresponds to the PCI.

2. The UE according to claim 1, wherein: The multiple PCIs correspond to the corresponding TRPs.

3. The UE according to claim 1, wherein: The one or more processors are further configured to: receiving one or more synchronization signal blocks from the TRP based at least in part on the configuration; as well as Reporting measurements based at least in part on the one or more synchronization signal blocks, wherein the information indicating the TRP is based at least in part on the measurements.

4. The UE according to claim 1, wherein: The plurality of configurations indicate subcarrier spacings of the plurality of PCIs.

5. The UE according to claim 1, wherein: The plurality of configurations indicate remaining minimum system information or random access configurations of the plurality of PCIs.

6. The UE according to claim 1, wherein: The plurality of configurations indicate rate matching patterns of the plurality of PCIs.

7. The UE according to claim 1, wherein: The plurality of configurations indicate time division duplex configurations of the plurality of PCIs.

8. The UE according to claim 1, wherein: The plurality of configurations indicate supplemental uplink configurations of the plurality of PCIs.

9. The UE according to claim 1, wherein: The multiple configurations indicate cell frequency locations of the multiple PCIs.

10. The UE according to claim 1, wherein: The plurality of configurations indicates bandwidth portion configurations of the plurality of PCIs.

11. The UE according to claim 1, wherein: The plurality of configurations indicate at least one of data channel configurations, control channel configurations, or reference signal configurations of the plurality of PCIs.

12. The UE according to claim 1, wherein: The plurality of configurations indicate at least one of channel state information measurement configurations or reporting configurations of the plurality of PCIs.

13. The UE according to claim 1, wherein: The plurality of configurations indicate timing advance group identifiers of the plurality of PCIs.

14. The UE according to claim 1, wherein: The multiple configurations indicate cross-carrier scheduling configurations of the multiple PCIs.

15. The UE according to claim 1, wherein: The plurality of configurations indicate transmission configuration indicator states or spatial relationship configurations of the plurality of PCIs.

16. The UE according to claim 1, wherein: A hybrid automatic repeat request (HARQ) process identifier space of the serving cell is duplicated for two or more PCIs of the plurality of PCIs.

17. The UE according to claim 1, wherein: A first PCI among the multiple PCIs is associated with a first portion of a hybrid automatic repeat request (HARQ) process identifier space of the serving cell, and a second PCI among the multiple PCIs is associated with a second portion of the HARQ process identifier space of the serving cell.

18. The UE according to claim 1, wherein: The one or more processors are further configured to: A radio link monitoring operation or a beam failure recovery operation is performed for all PCIs in the plurality of PCIs based at least in part on the plurality of configurations.

19. The UE according to claim 1, wherein: The one or more processors are further configured to: A radio link monitoring operation or a beam failure recovery operation is performed for a proper subset of the plurality of PCIs based at least in part on the plurality of configurations.

20. The UE according to claim 1, wherein: The control resource set identifier space of the serving cell is duplicated for two or more PCIs of the plurality of PCIs.

21. The UE according to claim 1, wherein: The control resource set identifier space of the serving cell is divided among two or more PCIs of the plurality of PCIs.

22. The UE according to claim 21, wherein: One or more control resource set identifiers of the control resource set identifier space are associated with one or more corresponding PCI indexes or one or more corresponding SSB set indexes.

23. A network entity for wireless communication, comprising: one or more memories; as well as one or more processors coupled to the one or more memories, the one or more processors being configured to: transmitting, to a user equipment (UE), a plurality of configurations corresponding to a plurality of physical cell identifiers (PCIs), wherein the plurality of PCIs are associated with a serving cell, and wherein the plurality of configurations are based at least in part on respective transmit reception points (TRPs) associated with the serving cell and indicate synchronization signal block configurations of the plurality of PCIs; Sending information indicating a TRP in the corresponding TRP or a PCI corresponding to the TRP; and According to a configuration among the plurality of configurations that corresponds to the PCI, communication is performed using the TRP based at least in part on the PCI.

24. The network entity according to claim 23, wherein: The multiple PCIs correspond to the corresponding TRPs.

25. The network entity according to claim 23, wherein: The one or more processors are further configured to: transmitting a respective synchronization signal block from the respective TRP based at least in part on the plurality of configurations; receiving information indicative of one or more measurements based at least in part on the corresponding synchronization signal block; selecting the TRP or the PCI based at least in part on the information indicative of the one or more measurements; as well as The information indicating the TRP is sent based at least in part on selecting the TRP or the PCI.

26. The network entity according to claim 23, wherein: A hybrid automatic repeat request (HARQ) process identifier space of the serving cell is duplicated for two or more PCIs of the plurality of PCIs.

27. The network entity according to claim 23, wherein: A first PCI among the multiple PCIs is associated with a first portion of a hybrid automatic repeat request (HARQ) process identifier space of the serving cell, and a second PCI among the multiple PCIs is associated with a second portion of the HARQ process identifier space of the serving cell.

28. A method of wireless communication performed by a user equipment (UE), comprising: receiving a plurality of configurations corresponding to a plurality of physical cell identifiers (PCIs), wherein the plurality of PCIs are associated with a serving cell, and wherein the plurality of configurations are based at least in part on synchronization signal block configurations of corresponding transmit reception points (TRPs) and indicating the plurality of PCIs; receiving information indicating a TRP in the corresponding TRP or a PCI corresponding to the TRP; and Communication with the TRP is performed at least partially based on the PCI according to a configuration among the multiple configurations that corresponds to the PCI.

29. A method of wireless communication performed by a network entity, comprising: transmitting, to a user equipment (UE), a plurality of configurations corresponding to a plurality of physical cell identifiers (PCIs), wherein the plurality of PCIs are associated with a serving cell, and wherein the plurality of configurations are based at least in part on respective transmit reception points (TRPs) associated with the serving cell and indicate synchronization signal block configurations of the plurality of PCIs; Sending information indicating a TRP in the corresponding TRP or a PCI corresponding to the TRP; and According to a configuration among the plurality of configurations that corresponds to the PCI, communication is performed using the TRP based at least in part on the PCI.

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