Power control for full duplex systems based on pl-rs for self-interference measurement

Abstract

The present disclosure provides systems, devices, apparatuses, and methods, including computer programs encoded on storage media, for power control in FD systems based on PL-RSs used to measure self-interference. In aspects, a base station can configure PL-RSs for one or more beam pairs and schedule a DL transmission including the PL-RSs. A UE can measure self-interference corresponding to the one or more beam pairs based on the PL-RSs and adjust UL Tx power for FD operation based on the measured self-interference for the one or more beam pairs. The UE can then transmit an UL transmission for FD operation based on the adjustment to the UL Tx power, such that the base station can receive the UL transmission with UL Tx power based on the measured self-interference associated with the PL-RSs.

Description

[0001] Cross-reference to related applications

[0002] This application claims the benefits and priorities of the following applications: U.S. Provisional Application Serial No. 63 / 088,152, filed October 6, 2020, entitled “Power Control in Full Duplex Systems based on PL-RS for Self-Interference Measurement”; and U.S. Patent Application No. 17 / 449,437, filed September 29, 2021, entitled “Power Control in Full Duplex Systems Based on PL-RS for Self-Interference Measurement”, the entire contents of which are expressly incorporated herein by reference. Technical Field

[0003] In summary, this disclosure relates to communication systems, and more specifically, to power control techniques in full-duplex (FD) systems based on a path loss (PL) reference signal (RS) (PL-RS) for measuring self-interference. Background Technology

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunications services, such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources. 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, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems.

[0005] These multiple access technologies have been adopted in various telecommunication standards to provide common protocols that enable different wireless devices to communicate on a municipal, national, regional, and even global level. An example telecommunication standard is 5G New Radio (NR). 5G NR is a set of enhancements to the LTE mobile standard promulgated by Third Generation Partnership Project (3GPP). It is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using OFDM with a cyclic prefix (CP) (also known as CP-OFDM), which techniques are used in LTE, LTE-Advanced (LTE-A) standard. These improvements are also intended to support machine-to-machine (M2M) or Machine Type Communication (MTC) communication, which can enable a wide range of new applications and services that can be relied upon to be more accessible and more efficient. 5G NR can also be used in a vehicle-to-everything (V2X) environment. 5G NR can enable vehicles to share information about their speed, location, direction, and status, which can improve transportation safety, efficiency, and mobility. 5G NR can enable vehicles to share information about their speed, location, direction, and status, which can improve transportation safety, efficiency, and mobility. 5G NR can enable vehicles to share information about their speed, location, direction, and status, which can improve transportation safety, efficiency, and mobility. Some aspects of 5G NR can be based on the 4G SUMMARY

[0006] The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.

[0007] In one aspect of the disclosure, a method, a computer readable medium, and an apparatus are provided. In an example, the apparatus can be configured to measure self-interference for one or more beam pairs based on one or more PL-RSs, adjust uplink (UL) transmit (Tx) power for FD operation based on the measured self-interference for the one or more beam pairs, and transmit an UL transmission for the FD operation based on the adjustment of the UL Tx power.

[0008] In another aspect of the disclosure, a method, a computer readable medium, and an apparatus are provided. In an example, the apparatus can be configured to configure a PL-RS for one or more beam pairs, schedule a downlink (DL) transmission including the PL-RS configured for the one or more beam pairs, the PL-RS to trigger a self-interference measurement at a user equipment (UE), and receive an UL transmission from the UE, the UL transmission having an UL Tx power based on the self-interference measurement triggered by the PL-RS.

[0009] To the accomplishment of the foregoing and related ends, one or more aspects comprise the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrative aspects of the one or more aspects. These aspects are indicative, however, of but a few of the various ways in which the principles of various aspects can be employed and the present description is intended to include all such aspects and their equivalents. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a diagram illustrating an example of a wireless communications system and an access network.

[0011] Figure 2A is a diagram illustrating an example of a first frame, in accordance with various aspects of the present disclosure.

[0012] Figure 2B is a diagram illustrating an example of DL channels within a subframe, in accordance with various aspects of the present disclosure.

[0013] Figure 2C is a diagram illustrating an example of a second frame, in accordance with various aspects of the present disclosure.

[0014] Figure 2D is a diagram illustrating an example of UL channels within a subframe, in accordance with various aspects of the present disclosure.

[0015] Figure 3 is a diagram illustrating an example of a base station and user equipment (UE) in an access network.

[0016] Figure 4 is a call flow diagram illustrating communications between a UE and a base station.

[0017] Figures 5A-5B is a diagram associated with self-interference at a UE.

[0018] Figure 6 is a diagram illustrating different path losses (PLs) for different beams for a UE.

[0019] Figure 7 is a diagram illustrating power control for a full-duplex (FD) UE.

[0020] Figure 8 is a flow diagram of a method of wireless communication at a UE.

[0021] Figure 9 is a flow diagram of a method of wireless communication at a UE.

[0022] Figure 10 is a flow diagram of a method of wireless communication at a base station.

[0023] Figure 11 is a flow diagram of a method of wireless communication at a base station.

[0024] Figure 12 is a diagram illustrating an example of a hardware implementation for an example apparatus.

[0025] Figure 13 is a diagram illustrating an example of a hardware implementation for an example apparatus. DETAILED DESCRIPTION

[0026] The detailed description set forth below, in connection with the appended drawings, is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described herein can be practiced. The detailed description includes specific details for the purpose of providing a thorough understanding of various concepts. However, it will be apparent to those skilled in the art that these concepts can be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form, rather than in detail, in order to avoid obscuring the concepts.

[0027] Several aspects of telecommunication systems will now be presented with reference to various apparatus and methods. These apparatus and methods will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as “elements”). These elements can be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends on the particular application and design constraints imposed on the overall system.

[0028] By way of example, an element, or any portion of an element, or any combination of elements can be implemented as a “processing system” that includes one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, systems on a chip (SoC), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionality described throughout this disclosure. One or more processors in the processing system can execute software. Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0029] Accordingly, in one or more examples, the functions described can be implemented in hardware, software, or any combination thereof. If implemented in software, the functions can be stored on or encoded as one or more instructions or code on a computer-readable medium. Computer-readable media includes computer storage media. Storage media can be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise a random-access memory (RAM), a read-only memory (ROM), an electrically erasable programmable ROM (EEPROM), compact disk ROM (CD-ROM) or other optical disk storage, magnetic disk storage or other magnetic storage devices, combinations of the aforementioned types of computer-readable media, or any other medium that can be used to store computer executable instructions or data structures accessed by a computer.

[0030] Figure 1 FIG. 1 is a diagram illustrating an example of a wireless communications system and an access network 100. The wireless communications system (also referred to as a wireless wide area network (WWAN)) includes base stations 102, UEs 104, an Evolved Packet Core (EPC) 160, and another core network 190 (e.g., a 5G Core (5GC)). The base stations 102 can include macro cells (high power cellular base stations) and / or small cells (low power cellular base stations). The macro cells can include base stations. The small cells can include femtocells, picocells, and microcells.

[0031] The base stations 102 configured for 4G LTE (collectively referred to as the Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) can interface with the EPC 160 through first backhaul links 132 (e.g., S1 interface). The base stations 102 configured for 5G NR (collectively referred to as Next Generation RAN (NG-RAN)) can interface with the core network 190 through second backhaul links 184. In addition to other functions, the base stations 102 can perform one or more of the following functions: transfer of user data, radio channel ciphering and deciphering, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection setup and release, load balancing, distribution of paging information, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), user and device configuration, user and device tracking, RAN information management (RIM), paging, positioning, and delivery of warning messages. The base stations 102 can communicate directly or indirectly (e.g., through the EPC 160 or core network 190) with each other over third backhaul links 134 (e.g., X2 interface). The first, second, and third backhaul links 132, 184, and 134 can be wired or wireless.

[0032] The base stations 102 can wirelessly communicate with the UEs 104. Each of the base stations 102 can provide communication coverage for a respective geographic coverage area 110. There can be overlapping geographic coverage areas 110. For example, a small cell 102' can have a coverage area 110' that overlaps with one or more macrocells 102. A network that includes both small cell and macrocells can be known as a heterogeneous network. A heterogeneous network can also include Home Evolved Node Bs (eNBs) (HeNBs), which can provide service to a restricted group known as a closed subscriber group (CSG). The communication links 120 between the base stations 102 and the UEs 104 can include uplink (UL) (also referred to as reverse link) transmissions from a UE 104 to a base station 102 and / or downlink (DL) (also referred to as forward link) transmissions from a base station 102 to a UE 104. The communication links 120 can use multiple-input and multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity. The communication links can be through one or more carriers, and each carrier can be a band of frequency waves having a predetermined width and can be used to transmit data between base stations 102 and UEs 104. The base stations 102 / UEs 104 can use spectrum up to Y MHz (e.g., 5, 10, 15, 20, 100, 400, etc. MHz) bandwidth per carrier allocated in the spectrum, which can be referred to as Y MHz

[0033] Certain UEs 104 can communicate with each other using device-to-device (D2D) communication link 158. The D2D communication link 158 can use DL / UL WWAN spectrum. The D2D communication link 158 can use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), and a physical sidelink control channel (PSCCH). D2D communication can be through a variety of wireless D2D communication systems, such as for example, WiMedia, Bluetooth, ZigBee, Wi-Fi based on IEEE 802.11 standards, LTE, or NR.

[0034] The wireless communications system can also include a Wi-Fi access point (AP) 150 in communication with Wi-Fi stations (STAs) 152 via communication links 154, e.g., in a 5 GHz unlicensed frequency spectrum or the like. When communicating in an unlicensed frequency spectrum, the STAs 152 / AP 150 can perform clear channel assessment (CCA) prior to communicating in order to determine whether the channel is available.

[0035] The small cells 102' can operate in a licensed and / or an unlicensed frequency spectrum. When operating in an unlicensed frequency spectrum, the small cells 102' can employ NR and use the same 5 GHz unlicensed frequency spectrum as used by the Wi-Fi AP 150. The small cells 102' employing NR in an unlicensed frequency spectrum can boost coverage of the access network and / or increase capacity of the access network.

[0036] The electromagnetic spectrum is often subdivided based on frequency / wavelength into various classes, bands, channels, etc. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz - 7. 125 GHz) and FR2 (24.25 GHz - 52.6 GHz). The frequencies between FR1 and FR2 are often referred to as mid-band frequencies. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as a “sub-6 GHz” band in various documents and articles. Similar naming conventions are sometimes applied to FR2, which is often referred to (interchangeably) as a “millimeter wave” band in documents and articles, despite being different from the extremely high frequency (EHF) band (30 GHz - 300 GHz) which is designated by the International Telecommunications Union (ITU) as a “millimeter wave” band.

[0037] With the above aspects in mind, unless specifically stated otherwise, it should be understood that the term “sub-6 GHz” or the like, if used herein, can broadly represent frequencies that can be less than 6 GHz, can be within FR1, or can include mid-band frequencies. Further, unless specifically stated otherwise, it should be understood that the term “millimeter wave” or the like, if used herein, can broadly represent frequencies that can include mid-band frequencies, can be within FR2, or can be within the EHF band.

[0038] The base stations 102, whether a small cell 102' or a large cell (e.g., macro base station), can include and / or be referred to as an eNB, gNodeB (gNB), gNodeB (gNB), or another type of base station. Some base stations (e.g., gNB 180) can operate in a traditional sub 6 GHz spectrum, in millimeter wave frequencies, and / or near millimeter wave frequencies in communication with the UEs 104. When the gNB 180 operates in millimeter wave frequencies, the gNB 180 can be referred to as a millimeter wave base station. The millimeter wave base station 180 can utilize beamforming 182 with the UEs 104 to compensate for the path loss and short range. The base station 180 and the UE 104 can each include a plurality of antennas, e.g., antenna elements, antenna panels, and / or antenna arrays, to facilitate beamforming.

[0039] The base station 180 can transmit a beamformed signal to the UE 104 in one or more transmit directions 182'. The UE 104 can receive the beamformed signal from the base station 180 in one or more receive directions 182". The UE 104 can also transmit a beamformed signal to the base station 180 in one or more transmit directions. The base station 180 can receive the beamformed signal from the UE 104 in one or more receive directions. The base station 180 / UE 104 can perform beam training to determine the best receive and transmit directions for each of the base station 180 / UE 104. The transmit and receive directions for the base station 180 can or can not be the same. The transmit and receive directions for the UE 104 can or can not be the same.

[0040] The EPC 160 can include a mobility management entity (MME) 162, other MMEs 164, a serving gateway 166, a multimedia broadcast multicast service (MBMS) gateway 168, a broadcast multicast service center (BM-SC) 170, and a packet data network (PDN) gateway 172. The MME 162 can be in communication with a home subscriber server (HSS) 174. The MME 162 is the control node that processes the signaling between the UEs 104 and the EPC 160. Generally, the MME 162 provides bearer and connection management. All user Internet protocol (IP) packets are transferred through the serving gateway 166, which itself is connected to the PDN gateway 172. The PDN gateway 172 provides UE IP address allocation as well as other functions. The PDN gateway 172 and the BM-SC 170 are connected to the IP services 176. The IP services 176 can include the Internet, an intranet, an IP multimedia subsystem (IMS), a PS streaming service, and / or other IP services. The BM-SC 170 can provide functions for MBMS user service provisioning and

[0041] The core network 190 can include an access and mobility management function (AMF) 192, other AMFs 193, a session management function (SMF) 194, and a user plane function (UPF) 195. The AMF 192 can be in communication with a unified data management (UDM) 196. The AMF 192 is the control node that processes the signaling between the UEs 104 and the core network 190. Generally, the AMF 192 provides QoS flow and session management. All user Internet protocol (IP) packets are transferred

[0042] A base station can include and / or be referred to as a gNB, NodeB, eNB, an access point, base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a transmit reception point (TRP), or some other suitable terminology. A base station 102 provides an access point to the EPC 160 or core network 190 for a UE 104. Examples of UEs 104 include a cellular phone, a smart phone, a session initiation protocol (SIP) phone, a laptop, a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player), a camera, a game console, a tablet, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a healthcare device, an implant, a sensor / actuator, a display, or any other similar functional device. Some of the UEs 104 can be referred to as IoT devices (e.g., parking meter, gas pump, toaster, vehicle, heart monitor, etc.). The UE 104 can also be referred to as a station, a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology.

[0043] Referring again to Figure 1 In certain aspects, the UE 104 can include a power control component 198 configured to measure self-interference for one or more beam pairs based on one or more path loss (PL) reference signals (RSs) (PL-RSs), adjust an UL transmit (Tx) power for full duplex (FD) operation based on the measured self-interference for the one or more beam pairs, and transmit an UL transmission for the FD operation based on the adjustment to the UL Tx power. In certain aspects, the base station 180 can include a PL-RS component 199 configured to configure a PL-RS for one or more beam pairs, schedule a downlink (DL) transmission including the PL-RS configured for the one or more beam pairs, the PL-RS to trigger a self-interference measurement at a user equipment (UE), and receive an UL transmission from the UE, the UL transmission having an UL Tx power based on the self-interference measurement triggered by the PL-RS. Although the following description can be focused on 5G NR, the concepts described herein can be applicable to other similar areas, such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0044] Figure 2A FIG. 2 is a diagram 200 illustrating an example of a first subframe within a 5G NR frame structure. Figure 2BFIG. 2 is a diagram 200 illustrating an example of DL channels within a 5G NR subframe. The 5G NR subframe can be used for both frequency division duplex (FDD) and time division duplex (TDD) modes. Figure 2C FIG. 2 is a diagram 200 illustrating an example of DL channels within a 5G NR subframe. The 5G NR subframe can be used for both frequency division duplex (FDD) and time division duplex (TDD) modes. Figure 2D FIG. 2 is a diagram 200 illustrating an example of DL channels within a 5G NR subframe. The 5G NR subframe can be used for both frequency division duplex (FDD) and time division duplex (TDD) modes. Figure 2A 、 2C In the examples provided by FIG. 2, the 5G NR frame structure is assumed to be TDD, where subframe 4 is configured with slot format 28 (with mostly DL), where D is DL, U is UL, and F is flexible to use between DL / UL, and subframe 3 is configured with slot format 1 (with all UL). While subframes 3, 4 are shown with slot formats 1, 28, respectively, any particular subframe can be configured with any of the various available slot formats 0-61. Slot formats 0, 1 are all DL, all UL, respectively. Other slot formats 2-61 include a mix of DL, UL, and flexible symbols. UEs are configured with a slot format (dynamically through DL control information (DCI), or semi- statically / statically through radio resource control (RRC) signaling) through a received slot format indicator (SFI). Note that the following description also applies for a 5G NR frame structure that is TDD.

[0045] Other wireless communications technologies can have different frame structures and / or different channels. A frame (10 ms) can be divided into 10 equally sized subframes (1 ms). Each subframe can include one or more time slots. A subframe can also include mini-slots, which can contain 7, 4, or 2 symbols. Depending on the slot configuration, each slot can include 7 or 14 symbols. For slot configuration 0, each slot can include 14 symbols, and for slot configuration 1, each slot can include 7 symbols. A symbol on the DL can be a cyclic prefix (CP) orthogonal frequency division multiplexing (OFDM) (CP-OFDM) symbol. A symbol on the UL can be a CP-OFDM symbol (for high throughput scenarios) or a discrete Fourier transform (DFT) spread OFDM (DFT-s-OFDM) symbol (also known as single carrier frequency division multiple access (SC-FDMA) symbol) (for power limited scenarios; limited to single stream transmission). The number of slots within a subframe is based on the slot configuration and the numerology. For slot configuration 0, different numerologies m0to 4allow for 1, 2, 4, 8, and 16 slots per subframe, respectively. For slot configuration 1, different numerologies 0 to 2allow for 2, 4, and 8 slots per subframe, respectively. Thus, for slot configuration 0 and numerology m, there are 14 symbols / slot and 2 μ slots / subframe. The subcarrier spacing can be equal to 2 μ * 15 kHz, where m is the numerology 0 to 4. As such, the subcarrier spacing for numerology m = 0 is 15 kHz, and the subcarrier spacing for numerology m = 4 is 240 kHz. The symbol length / duration is inversely proportional to the subcarrier spacing. Figures 2A-2D An example is provided of slot configuration 0 with 14 symbols per slot and numerology m = 2 with 4 slots per subframe. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 ps. Within a frame collection, there can be one or more different bandwidth parts (BWPs) that are frequency division multiplexed (see Figure 2B ). Each BWP can have a particular numerology.

[0046] A resource grid can be used to represent the frame structure. Each time slot includes resource blocks (RBs) (also referred to as physical RBs (PRBs)), which extend along the subcarriers. The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0047] As illustrated in Figure 2AAs illustrated, some of the REs carry reference (pilot) signals (RS) for the UE. The RS can include demodulation RS (DM-RS) (indicated as R for one particular configuration, but other DM-RS configurations are possible) and channel state information reference signals (CSI-RS) for channel estimation at the UE. The RS can also include beam measurement RS (BRS), beam refinement RS (BRRS), and phase tracking RS (PT-RS).

[0048] Figure 2B An example of various DL channels is shown within a subframe. The physical downlink control channel (PDCCH) carries DCI within one or more control channel elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs), each CCE including six RE groups (REGs), each REG including 12 consecutive REs in an OFDM symbol of an RB. A PDCCH within one BWP can be referred to as a control resource set (CORESET). A UE is configured to monitor PDCCH search space (e.g., common search space, UE-specific search space) for PDCCH candidates with different DCI formats and different aggregation levels during PDCCH monitoring occasions on the CORESET. Additional BWPs can be located at higher and / or lower frequencies of the channel bandwidth. A primary synchronization signal (PSS) can be within symbol 2 of particular subframes of a frame. The PSS is used by a UE 104 to determine subframe / symbol timing and physical layer identity. A secondary synchronization signal (SSS) can be within symbol 4 of particular subframes of a frame. The SSS is used by a UE to determine physical layer cell identity group number and radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE can determine a physical cell identifier (PCI). Based on the PCI, the UE can determine the locations of the aforementioned DM-RS. The physical broadcast channel (PBCH), which carries a master information block (MIB) that provides system bandwidth configuration and scheduling information can be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block (also referred to as SS block (SSB)). The MIB provides a number of RBs in the system bandwidth and a system frame number (SFN). The physical downlink shared channel (PDSCH) carries user data, broadcast system information not transmitted through the PBCH such as system information blocks (SIBs), and paging messages.

[0049] As in Figure 2CAs illustrated, some of the REs carry DM-RS (indicated as R for one particular configuration, but other DM-RS configurations are possible) for channel estimation at the base station. The UE can transmit DM-RS for the physical uplink control channel (PUCCH) and DM-RS for the physical uplink shared channel (PUSCH). The PUSCH DM-RS can be transmitted in the first one or two symbols of the PUSCH. The PUCCH DM-RS can be transmitted with different configurations depending on whether short or long PUCCHs are transmitted and depending on the particular PUCCH format used. The UE can transmit a sounding reference signal (SRS). The SRS can be transmitted in the last symbol of a subframe. The SRS can have a comb structure, and the UE can transmit one of the combs. The SRS can be used by a base station for channel quality estimation to enable frequency-dependent scheduling on the UL.

[0050] Figure 2D An example of various UL channels is shown within a subframe of a frame. The PUCCH can be positioned as indicated for one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, a channel quality indicator (CQI), a precoding matrix indicator (PMI), a rank indicator (RI), and hybrid automatic repeat request (HARQ) acknowledgment (ACK) (HARQ-ACK) information (ACK / negative ACK (NACK)) feedback. The PUSCH carries data, and can additionally be used to carry a buffer status report (BSR), a power headroom report (PHR), and / or UCI.

[0051] Figure 3is a block diagram of the base station 310 in communication with the UE 350 in an access network. In the DL, IP packets from the EPC 160 can be provided to a controller / processor 375. The controller / processor 375 implements layer 3 and layer 2 functionality. Layer 3 includes a radio resource control (RRC) layer, and layer 2 includes a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a medium access control (MAC) layer. The controller / processor 375 provides RRC layer functionality associated with broadcasting of system information (e.g., MIB, SIBs), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter radio access technology (RAT) mobility, and measurement configuration for UE measurement reporting; PDCP layer functionality associated with header compression / decompression, security (ciphering, deciphering, integrity protection, integrity verification), and handover support functions; RLC layer functionality associated with the transfer of upper layer

[0052] The transmit (TX) processor 316 and the receive (RX) processor 370 implement layer 1 functionality associated with various signal processing functions. Layer 1, which includes a physical (PHY) layer, can include error detection on the transport channels, forward error correction (FEC) coding / decoding of the transport channels, interleaving, rate matching, mapping to physical channels, modulation / demodulation of physical channels, and MIMO antenna processing. The TX processor 316 handles mapping to signal constellations based on various modulation schemes (e.g., binary phase-shift keying (BPSK), quadrature phase-shift keying (QPSK), M-phase-shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The coded and modulated symbols can then be split into parallel streams. Each stream can then be mapped to a OFDM subcarrier, multiplexed with a reference signal (e.g., pilot) in the time and / or frequency domain, and then combined together using an Inverse Fast Fourier Transform (IFFT) to produce a physical channel carrying a time domain OFDM symbol stream. The OFDM stream is spatially precoded to produce multiple spatial streams. Channel estimates from a channel estimator 374 can be used to determine the coding and modulation schemes, as well as for spatial processing. The channel estimate can be derived from a reference signal and / or channel condition feedback transmitted by the UE 350. Each spatial stream can then be provided to a different antenna 320 via a separate transmitter 318TX. Each transmitter 318TX can modulate a respective spatial stream onto an RF carrier

[0053] At the UE 350, each receiver 354RX receives a signal through its respective antenna 352. Each receiver 354RX recovers information modulated onto an RF carrier and provides the information to the receive (RX) processor 356. The TX processor 368 and the RX processor 356 implement layer 1 functionality associated with various signal processing functions. The RX processor 356 can perform spatial processing on the information to recover any spatial streams destined for the UE 350. If multiple spatial streams are destined for the UE 350, they can be combined by the RX processor 356 into a single OFDM symbol stream. The RX processor 356 then converts the OFDM symbol stream from the time-domain to the frequency domain using a Fast Fourier Transform (FFT). The frequency domain signal comprises a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier, and the reference signal, are recovered and demodulated by determining the most likely signal constellation points transmitted by the base station 310. These soft decisions can be based on channel estimates computed by the channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals that were originally transmitted by the base station 310 on the physical channel. The data and control signals are then provided to the controller / processor 359, which implements layer 3 and layer 2 functionality.

[0054] The controller / processor 359 can be associated with a memory 360 that stores program codes and data. The memory 360 can be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, and control signal processing to recover IP packets from the EPC 160. The controller / processor 359 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.

[0055] Similar to the functionality described in connection with the DL transmission by the base station 310, the controller / processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIBs) acquisition, RRC connections, and measurement reporting; PDCP layer functionality associated with header compression / decompression, and security (ciphering, deciphering, integrity protection, integrity verification); RLC layer functionality associated with the transfer of upper layer PDUs, error correction through ARQ, concatenation, segmentation, and reassembly of RLC SDUs, re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0056] Channel estimates derived by the channel estimator 358 from a reference signal or feedback transmitted by the base station 310 can be used by the TX processor 368 to select the appropriate coding and modulation schemes to be used by the UE 350, as well as to facilitate spatial processing. The spatial streams generated by the TX processor 368 can be provided to different antenna 352 via separate transmitters 354TX. Each transmitter 354TX can modulate an RF carrier with a respective spatial stream for transmission.

[0057] The UL transmission is processed at the base station 310 in a manner similar to that described in connection with the receiver function at the UE 350. Each receiver 318RX receives a signal through its respective antenna 320. Each receiver 318RX recovers information modulated onto an RF carrier and provides the information to a RX processor 370.

[0058] The controller / processor 375 can be associated with a memory 376 that stores program codes and data. The memory 376 can be referred to as a computer-readable medium. In the UL, the controller / processor 375 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover IP packets from the UE 350. IP packets from the controller / processor 375 can be provided to the EPC 160. The controller / processor 375 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.

[0059] At least one of the TX processor 368, the RX processor 356, and the controller / processor 359 can be configured to perform aspects of the power control component 198 in connection with Figure 1

[0060] At least one of the TX processor 316, the RX processor 370, and the controller / processor 375 can be configured to perform aspects of the PL-RS component 199 in connection with Figure 1

[0061] Wireless communication systems can be configured to share available system resources and provide various telecommunication services (e.g., telephony, video, data, messaging, broadcasts, etc.) based on multiple access technologies that enable communication with multiple users (e.g., CDMA systems, TDMA systems, FDMA systems, OFDMA systems, SC-FDMA systems, TD-SCDMA systems, etc.). In many cases, common protocols that facilitate communication with wireless devices are employed in various telecommunication standards. For example, communication methods associated with eMBB, mMTC, and URLLC can be incorporated into 5G NR telecommunication standards, while other aspects can be incorporated into 4G LTE standards. As mobile broadband technology is part of an ongoing evolution, further improvements in mobile broadband are still useful and can be applied to continued development of such technologies.

[0062] Figure 4 is a call flow diagram 400 illustrating communication between a UE 402 and a base station 404. At 406, the UE 402 can determine whether a PL-RS is preconfigured for a beam pair. For example, the base station 404 can preconfigure a PL-RS based on RRC signaling. Further, the base station 404 can update the preconfiguration of the PL-RS via a MAC control element (MAC-CE) or DCI.

[0063] ​​If the UE 402 determines that the PL-RS is preconfigured at 406, the UE 402 can receive the PL-RS for the beam pair from the base station 404 at 410. Based on the received PL-RS, the UE 402 can measure the self-interference for the beam pair at 412. If the UE 402 determines that the PL-RS is not preconfigured at 406, the UE 402 can apply a default beam pair to measure the self-interference for the beam pair at 412. Additionally or alternatively, if the UE 402 determines that the PL-RS is not preconfigured at 406, the UE 402 can apply a default self-interference (SI) value as the measured self-interference to determine the UL Tx power at 414.

[0064] At 414, the UE 402 can determine the UL Tx power for the FD operation based on the self-interference measurement at 412. At 414, the UE 402 can also apply the UL Tx power during the FD operation. At 418, the UE 402 can transmit the UL transmission to the base station 404 based on a maximum boundary value of the UL Tx power.

[0065] In an example, the self-interference measured at 412 can vary over time or can vary based on conditions of the environment of the UE 402 (e.g., based on clutter within the environment). Accordingly, at 420, the UE 402 can periodically receive an additional PL-RS from the base station 404, such as a second PL-RS for the received beam pair. At 422, the UE 402 can re-measure the self-interference based on the second PL-RS for the beam pair received from the base station 404 at 420.

[0066] Figures 5A-5B The diagrams 500-550 associated with the self-interference at the UE 502 / 552 are shown, respectively. In power control techniques for FD systems, a PL-RS can be used to measure the self-interference from the local transmitter to the local receiver. That is, the UL power control can be based on a reference signal associated with the self-interference at the UE 502 / 552. In some configurations, the communication can be based on a half-duplex (HD) system, where a device (e.g., a UE or a base station) can not simultaneously transmit and receive signals. Accordingly, the efficiency of the HD device can be half of the FD device that simultaneously transmits and receives signals. An FD device in a cellular system can have self-interference / leakage from the Tx beam 504 to the local receiver of the UE 502. Given that the local transmitter and the local receiver of the UE 502 can be close to each other, the strength of the self-interference can be high.

[0067] Self-interference caused by simultaneous transmission and reception of signals by a device, such as the UE 502 or a base station, can reduce FD operation. In some configurations, the local transmitter can block the local receiver from receiving the Rx beam 506 from another device. In an example, the path loss of the Rx beam 506 can be high, resulting in a weak signal transmitted from other devices. Since the local transmitter can be close to the local receiver, the Tx beam 504 from the UE 502 can be stronger at the UE 502 than the Rx beam 506 from other devices (e.g., base stations).

[0068] Self-interference from the Tx antenna to the Rx chain can be based on proximity of the device (e.g., proximity of the UE 502 to a base station) and / or from reflections caused by local clutter. The self-interference at the UE 502 can block the Rx beam 506 from the Tx beam 504 at least as strong as the Rx beam 506 including cancellation techniques. Cancellation, such as analog cancellation or digital cancellation, can not correspond to the same tone (e.g., the Tx beam 504 and the Rx beam 506 can utilize different BWPs to reduce self-interference in FD operation). If the UE 502 determines an estimated strength of the Tx beam 504 and a channel from the local transmitter to the remote receiver, the estimated self-interference can be cancelled at the UE 502 based on digital techniques. After performing cancellation, a remaining portion of the Rx beam 506 can correspond to a signal transmitted from a base station. Analog cancellation techniques can also be performed in the analog domain. Thus, if the self-interference is cancelled, the UE 502 can double spectral efficiency and reduce latency.

[0069] In millimeter wave (mmW) applications, self-interference can be reduced by selecting particular beams for UL / DL beam pairs. For example, the UE 552 can utilize beamforming techniques to direct the Tx beam 554 and the Rx beam 556 in different directions to reduce self-interference / leakage. The Tx beam 554 and the Rx beam 556 can be associated with different spatial directions and / or different panels. Self-interference can depend on the Tx / Rx beam pair selected by the UE 552. For example, if the Tx beam 504 and the Rx beam 506 are associated with the same direction and the same panel, the Tx antenna can have increased leakage to the Rx antenna. Thus, self-interference at the UE 502 can be higher than when the UE 552 uses different beam directions and / or different antenna arrays / panels to provide both physical and directional separation. The beam pair can be selected via a beam training procedure with simultaneous CSI-RS / SRS scanning (e.g., self-interference measurements can be performed to select a beam pair that reduces self-interference at the UE 552 for FD operation).

[0070] In a FD configuration, the UE and base station can utilize two beam pairs to achieve UL / DL balance in terms of signal strength and self-interference. For power control purposes, if the UL signaling strength is high, leakage to the local receiver may also be high during FD operation (e.g., the UL signaling may be strong enough to block DL signaling from the base station). Therefore, UL power control can be configured to reduce the Tx signal so as not to block the Rx signal. If the UL beam changes during FD operation, an update procedure for receiving the DL beam can be performed.

[0071] Figure 6 A schematic diagram 600 is shown corresponding to different PLs for different beams used for UE 602. To measure self-interference, UE 602 can select beam pairs for transmitting SRS and receiving CSI-RS. Base station 604a can schedule SRS and CSI-RS at the same time as the transmitter and receiver scheduling for UE 602. Base station 604a can transmit CSI-RS and listen for SRS to measure self-interference at UE 602. Such measurements can be coordinated by base station 604a. In some aspects, DM-RS can be measured in UL transmissions (e.g., PUSCH) to determine self-interference.

[0072] Power control techniques can be used in conjunction with any of the PUSCH, PUCCH, SRS, PRACH, etc. UE602 can determine the power used for UL transmission based on a measured PL (e.g., PL1). In some cases, PL can be estimated for UL transmission. The power used to determine UL transmission (e.g., P...) PUSCH The power control algorithm 606 can be based on the maximum power threshold (P). CMAX ) of, P CMAX It can be a boundary term corresponding to the maximum Tx power for UE 602, and P corresponding to the offset and slope of PL inversion, respectively. O And the α term. In the example, it can be based on P. O The -pusch-alphaset parameter is configured via RRC signaling for P. O And α. The power control algorithm 606 can also be based on the bandwidth (M) for PUSCH, the Δ term associated with the modulation and coding scheme (MCS), and the frequency term (f) for adjustment associated with the Tx power control (TPC) command in DCI.

[0073] UL power control can compensate for PL so that when a UE 602 transmits a signal to different distances, the Rx signal can have approximately the same strength when received at different distances (e.g., at base stations 604a-604b). PL can be measured in the UL. However, due to power constraints of the UE 602, if the PL is too high, the UL transmission can not occur. An a parameter can indicate a fraction of the PL that can be compensated for (e.g., a fraction path based on a compounding technique). Some aspects of the power control algorithm 606 (e.g., a, PL, etc.) can be configured by the base stations 604a-604b based on a pre-defined protocol.

[0074] In mmW systems, the PL can be different for different beams. For example, PL1 corresponding to the base station 604a can be different than PL2 corresponding to the base station 604b. To enable the UE 602 to measure the PL, a PL-RS can be provided based on a CSI-RS / SSB. The PL-RS can be a DL RS included in a beam associated with the UL transmission. For example, if the UE 602 is transmitting in the UL to the base station 604a, the same beam can be used to transmit a DL RS back to the UE 602 in the DL channel along the same direction. The CSI-RS / SSB of the beam can be configured as the PL-RS associated with the SRS resource (e.g., based on a SRS resource index (SRI)). The UE 602 can measure the CSI-RS / SSB to determine the PL and apply the corresponding PL information to the power control algorithm 606 to determine / adjust the UL power. When an SRI is used to schedule a PUSCH, the PL measured via the associated PL-RS can be used to determine the Tx power. If a PL-RS is not configured, a default beam (e.g., associated with a MIB / SSB) can be utilized. In cases where, for example, RRC is being configured, a PL signal can not be configured. An algorithm similar to the power control algorithm 606 can utilize the measured PL as an input for UL transmissions corresponding to PUCCH and / or SRS.

[0075] Figure 7 An illustration 700 is shown for power control in a UE 702 (e.g., an FD UE). Since leakage can occur from a local transmitter to a local receiver of the UE 702 associated with power control for FD operation, the local transmitter can be configured to transmit a signal with sufficient strength, but not strong enough to block the local receiver. Self-interference at the UE 702 can provide a basis for determining UL power for FD transmissions such that DL reception from a base station is not blocked. The self-interference level can be different between different beam pairs. By measuring the self-interference for each beam pair, the maximum UL power can be limited based on the measurement such that the leakage from the local transmitter to the local receiver is small enough to not block DL reception from a base station.

[0076] Self-interference can change over time and / or environment (e.g., due to clutter, such as an object reflecting UL transmissions into DL signals received by the UE 702). Thus, self-interference can not be a stable characteristic. Self-interference can be measured for beam pairs from time to time, which can be performed based on measuring reference signals or reference signal pairs. Thus, to determine UL power in FD operation, the UE 702 can determine self-interference, but since self-interference can change over time, the UE 702 can perform one or more additional measurements from time to time. A reference signal can be sent for each scheduled beam pair transmission to determine power control (e.g., to determine a self-interference PL signal that can be similar to UL PL signals in some cases, and use the self-interference PL signal to determine self-interference, which can be further used to determine UL power for FD operation).

[0077] The UE 702 can perform a modified power control algorithm 710 for FD transmissions. The modified power control algorithm 710 can take into account self-interference at the UE 702 caused by UL transmissions. An additional margin term (e.g., P max,SI (SI) can be associated with self-interference, and can correspond to an additional maximum power determined based on self-interference. That is, a value of self-interference can be used to determine maximum transmit power, since transmit power multiplied by a PL of self-interference can indicate interference. P max,SI (SI) and / or P CMAX Interference in DL can be limited to ensure that a threshold level of interference does not occur in DL. Other parameters in the modified power control algorithm 710 can be adjusted based on self-interference. For example, an offset parameter such as P O parameters or h parameters, as well as slope parameters such as a.

[0078] For each FD beamp pair link, the network can configure self-interference PL-RS for power control techniques. Tx and Rx beams can be transmitted simultaneously to form beamp pairs for FD transmission. For each beamp pair, the network can configure self-interference PL-RS to determine self-interference and further determine power control. This configuration can be provided via RRC signaling and updated via MAC-CE or DCI. Self-interference PL-RS can be associated at least with a UL transmission corresponding to the UL beam in the beamp pair and a DL transmission for measuring self-interference using the DL beam in the beamp pair. The UL transmission can be SRS, PUSCH, PUCCH, or PRACH. The DL transmission can be CSI-RS (e.g., zero-power CSI-RS or non-zero-power CSI-RS), Tracking Reference Signal (TRS), or DM-RS (e.g., in Semi-Persistent Scheduling (SPS) PDSCH / PDCCH). Therefore, a predetermined DL signal can be used to measure the transmission in the UL. For example, if SRS is transmitted at zero power, UE 702 can determine that the entire received signal is self-interference. If the SRS is transmitted at non-zero power, UE 702 can determine a predefined sequence such that when UE 702 receives a signal from the base station (e.g., CSI-RS with power / sequence), UE 702 can determine SRS leakage based on the combination of the transmitted SRS and the received CSI-RS. In the example where the CSI-RS sequence is predetermined, UE 702 can subtract the contribution of the CSI-RS from the received signal to determine self-interference based on the remaining portion of the signal. Self-interference PL-RS can be periodically transmitted for UE 702 to measure self-interference. UE 702 can also be configured to monitor SRS to determine how self-interference changes over time.

[0079] When scheduling FD transmissions on a beam pair, UE 702 can determine a pre-configured self-interference PL-RS associated with the beam pair used for FD transmissions. For example, UE 702 can first determine the self-interference PL-RS associated with the beam pair and then use the beam pair to determine a measured self-interference value. The self-interference value can be provided as input to the modified power control algorithm 710 to determine the UL power control / UL Tx power for the FD transmission. When no self-interference PL-RS is configured for the beam pair, UE 702 can use the default beam pair to measure self-interference or use the default value of self-interference in the modified power control algorithm 710 to determine power control.

[0080] Figure 8is a flowchart 800 of a method of wireless communication. The method can be performed by a UE (e.g., the UE 104, 402, 502, 552, 602, 702; the apparatus 1202, etc.) that can include the memory 360 and can be the entire UE 104, 402, 502, 552, 602, 702 or a component of the UE 104, 402, 502, 552, 602, 702, such as the TX processor 368, the RX processor 356, and / or the controller / processor 359.

[0081] At 802, the UE can measure self-interference for one or more beam pairs based on the one or more PL RS. For example, refer to Figure 4 At 412, the UE 402 can measure self-interference for the beam pair based on the PL-RS received from the base station 404 at 410. The measurement at 802 can be performed by the measurement component 1242 of the apparatus 1202 in Figure 12

[0082] At 804, the UE can adjust the UL Tx power for the FD operation based on the measured self-interference for the one or more beam pairs. For example, refer to Figure 4 At 414, the UE 402 can apply the adjusted UL Tx power for the FD operation based on the self-interference measured for the beam pair at 412. The adjustment at 804 can be performed by the adjustment component 1248 of the apparatus 1202 in Figure 12

[0083] At 806, the UE can transmit an UL transmission for the FD operation based on the adjustment to the UL Tx power. For example, refer to Figure 4 At 418, the UE 402 can transmit the UL transmission to the base station 404 based on the maximum boundary value. The transmission at 806 can be performed by the transmission component 1234 of the apparatus 1202 in Figure 12

[0084] Figure 9 is a flowchart 900 of a method of wireless communication. The method can be performed by a UE (e.g., the UE 104, 402, 502, 552, 602, 702; the apparatus 1202, etc.) that can include the memory 360 and can be the entire UE 104, 402, 502, 552, 602, 702 or a component of the UE 104, 402, 502, 552, 602, 702, such as the TX processor 368, the RX processor 356, and / or the controller / processor 359.

[0085] At 902, the UE can determine whether one or more PL-RSs are preconfigured for measuring self-interference. For example, refer to Figure 4 ​​​At 406, the UE 402 can determine whether the PL-RSs are preconfigured for the beam pairs associated with the base station 404. The one or more PL-RSs can be preconfigured via RRC signaling (e.g., at 408) and the one or more PL-RSs can be updated in association with at least one of a MAC-CE or DCI (e.g., at 408). The one or more PL-RSs can be associated with UL transmissions and DL receptions (e.g., beam pairs). The UL transmissions can correspond to UL beams in the one or more beam pairs and the DL receptions can correspond to DL beams in the one or more beam pairs. The UL transmissions can be at least one of SRS, PUSCH, PUCCH, or physical random access channel (PRACH). The DL receptions can be at least one of CSI-RS, TRS, or DM-RS. The determination at 902 can be performed by a determination component 1240 of the apparatus 1202 in FIG. 12. Figure 12 The determination at 902 can be performed by a determination component 1240 of the apparatus 1202 in FIG. 12.

[0086] At 904, when the one or more PL-RSs are preconfigured, the UE can receive the one or more PL-RSs for each of the one or more beam pairs included. For example, with reference to Figure 4 When the base station 404 preconfigures the PL-RSs at 408, at 410, the UE 402 can receive the PL-RSs for the beam pairs. The reception at 904 can be performed by a reception component 1230 of the apparatus 1202 in FIG. 12. Figure 12 The reception at 904 can be performed by a reception component 1230 of the apparatus 1202 in FIG. 12.

[0087] At 906, when the one or more PL-RSs are not preconfigured, the UE can apply a default beam pair to measure the self-interference or the UE can apply a default self-interference value as the measured self-interference when the one or more PL-RSs are not preconfigured. For example, with reference to Figure 4 When it is determined at 406 that the PL-RSs are not preconfigured, at 416, the UE 402 can apply a default beam pair to measure the self-interference at 412. Additionally or alternatively, when it is determined at 406 that the PL-RSs are not preconfigured, at 417, the UE 402 can apply a default self-interference value as the measured self-interference to determine / apply the UL Tx power at 414. The application at 906 can be performed by an application component 1244 of the apparatus 1202 in FIG. 12. Figure 12 The application at 906 can be performed by an application component 1244 of the apparatus 1202 in FIG. 12.

[0088] At 908, the UE can measure the self-interference for the one or more beam pairs based on the one or more PL-RSs. For example, with reference to Figure 4 At 412, the UE 402 can measure the self-interference for the beam pairs based on the PL-RSs received from the base station 404 at 410. The measurement at 908 can be performed by a measurement component 1232 of the apparatus 1202 in FIG. 12. Figure 12by the measurement component 1242 of the apparatus 1202 in FIG. 12.

[0089] At 910, the UE can determine the UL Tx power for the FD operation based on the measured self-interference or a default self-interference value applied as the measured self-interference. For example, refer to Figure 4 At 414, the UE 402 can determine the UL Tx power for the FD operation based on the self-interference measured at 412. The UL Tx power can be determined at 414 based on a predefined algorithm, where at least one parameter in the predefined algorithm can depend on the measured self-interference (e.g., at 412). The determination at 910 can be performed by the determination component 1240 of the apparatus 1202 in FIG. 12. Figure 12

[0090] At 912, the UE can apply the UL Tx power during the FD operation. For example, refer to Figure 4 At 414, the UE 402 can apply the UL Tx power for the FD operation. The application at 912 can be performed by the application component 1244 of the apparatus 1202 in FIG. 12. Figure 12

[0091] At 914, the UE can transmit the UL transmission based on a maximum value that limits the UL Tx power. For example, refer to Figure 4 At 418, the UE 402 can transmit the UL transmission based on the maximum boundary value of the UL Tx power. In an example, the maximum value that limits the UL Tx power can be determined based on the measured self-interference (e.g., at 412). The transmission at 914 can be performed by the transmission component 1234 of the apparatus 1202 in FIG. 12. Figure 12

[0092] At 916, the UE can periodically re-measure the self-interference for one or more beam pairs. For example, refer to Figure 10 At 422, the UE 402 can re-measure the self-interference based on the second PL-RS received from the base station 404 at 420, as the self-interference can change based on at least one of a time period or an environment. In an example, the level of the self-interference can be different for different beam pairs included in the one or more beam pairs. The re-measurement at 916 can be performed by the re-measurement component 1246 of the apparatus 1202 in FIG. 12. Figure 4

[0093] Figure 13 ​​​​is a flowchart 1000 of a method of wireless communication. The method can be performed by a base station (e.g., the base station 102, 180, 404, 604a, 604b; the apparatus 1302, etc.) that can include the memory 376 and can be the entire base station 102, 180, 404, 604a, 604b or a component of the base station 102, 180, 404, 604a, 604b, such as the TX processor 316, the RX processor 370, and / or the controller / processor 375.

[0094] At 1002, the base station can configure a PL-RS for one or more beam pairs. For example, refer to Figure 4 At 408, the base station 404 can perform PL-RS pre-configuration. The configuration at 1002 can be performed by the configuration component 1340 of the apparatus 1302 in Figure 13

[0095] At 1004, the base station can schedule a DL transmission including a PL-RS configured for one or more beam pairs, the PL-RS for triggering a self-interference measurement at a UE. For example, refer to Figure 4 At 410, the base station 404 can schedule a PL-RS for a beam pair for the UE 402 to measure a self-interference for the beam pair based on the PL-RS at 412. The scheduling at 1004 can be performed by the scheduler component 1342 of the apparatus 1302 in Figure 13

[0096] At 1006, the base station can receive, from the UE, a UL transmission with a UL Tx power based on the self-interference measurement triggered by the PL-RS. For example, refer to Figure 11 At 418, the base station 404 can receive, from the UE 402, a UL transmission with a UL Tx power dependent on the PL-RS transmitted to the UE 402 at 410. The reception at 1006 can be performed by the reception component 1330 of the apparatus 1302 in Figure 4

[0097] Figure 13 is a flowchart 1100 of a method of wireless communication. The method can be performed by a base station (e.g., the base station 102, 180, 404, 604a, 604b; the apparatus 1302, etc.) that can include the memory 376 and can be the entire base station 102, 180, 404, 604a, 604b or a component of the base station 102, 180, 404, 604a, 604b, such as the TX processor 316, the RX processor 370, and / or the controller / processor 375.

[0098] ​​​At 1102, the base station can configure a PL-RS for one or more beam pairs. For example, refer to Figure 4 At 408, the base station 404 can perform PL-RS pre-configuration. The PL-RS can be configured (e.g., at 408) via RRC signaling and the PL-RS can be updated (e.g., at 408) in association with at least one of a MAC-CE or DCI. The PL-RS can be associated with an UL beam of the one or more beam pairs and a DL beam of the one or more beam pairs. The UL beam can be at least one of an SRS, a PUSCH, a PUCCH, or a PRACH. The DL beam can be at least one of a CSI-RS, a TRS, or a DM-RS. The configuration at 1102 can be performed by a configuration component 1340 of the apparatus 1302 in Figure 13 FIG. 13.

[0099] At 1104, the base station can schedule a DL transmission including a PL-RS configured for one or more beam pairs, the PL-RS for triggering a self-interference measurement at a UE. For example, refer to Figure 4 At 410, the base station 404 can schedule a PL-RS for a beam pair for the UE 402 to measure a self-interference for the beam pair based on the PL-RS at 412. The level of the self-interference can change based on at least one of a time period or an environment. Further, different beam pairs of the one or more beam pairs can correspond to different levels of the self-interference. The scheduling at 1104 can be performed by a scheduler component 1342 of the apparatus 1302 in Figure 13 FIG. 13.

[0100] At 1106, the base station can receive, from the UE, an UL transmission with an UL Tx power based on the self-interference measurement triggered by the PL-RS. For example, refer to Figure 4 At 418, the base station 404 can receive, from the UE 402, an UL transmission with an UL Tx power dependent on the PL-RS transmitted to the UE 402 at 410. For example, the UL Tx power can be based on a predefined algorithm, where at least one parameter in the predefined algorithm can be dependent on the self-interference measurement triggered by the PL-RS. The reception at 1106 can be performed by a reception component 1330 of the apparatus 1302 in Figure 13 FIG. 13.

[0101] At 1108, to receive the UL transmission from the UE, the base station can receive the UL transmission based on a maximum value that limits the UL Tx power. For example, refer to Figure 4 At 418, the base station 404 can receive the UL transmission based on a maximum boundary value. The maximum value can be configured to limit the UL Tx power based on the self-interference measurement triggered by the PL-RS. The reception at 1108 can be performed by a reception component 1330 of the apparatus 1302 inFigure 13 the reception component 1330 of the apparatus 1302 in FIG. 13B can perform.

[0102] At 1110, the base station can schedule a second DL transmission including a second PL-RS for one or more beam pairs, the second PL-RS for triggering a re- measurement of self-interference at the UE. For example, refer to Figure 12 At 420, the base station 404 can schedule a second PL-RS for the beam pair. The second PL-RS scheduled at 420 can trigger a re-measurement of self-interference at the UE 402 at 422. The scheduling at 1110 can be performed by the scheduler component 1342 of the apparatus 1302 in FIG. 13B. Figure 3 the scheduler component 1342 of the apparatus 1302 in FIG. 13B can perform.

[0103] Figures 8-9 is a diagram 1200 showing an example of a hardware implementation for an apparatus 1202. The apparatus 1202 is a UE and includes a cellular baseband processor 1204 (also referred to as a modem) coupled with a cellular RF transceiver 1222, and one or more Subscriber Identity Modules (SIM) cards 1220, an application processor 1206 coupled with a secure digital (SD) card 1208 and a screen 1210, a Bluetooth module 1212, a wireless local area network (WLAN) module 1214, a Global Positioning System (GPS) module 1216, and a power supply 1218. The cellular baseband processor 1204 communicates with the UE 104 and / or BS 102 / 180 by the cellular RF transceiver 1222. The cellular baseband processor 1204 can include a computer- readable medium / memory. The computer-readable medium / memory can be non-transitory. The cellular baseband processor 1204 is responsible for the general processing, including the execution of software stored in the computer-readable medium / memory. The software, when executed by the cellular baseband processor 1204, causes the cellular baseband processor 1204 to perform the various functions described supra. The computer-readable medium / memory can also be used for storing data that is manipulated by the cellular baseband processor 1204 when executing software. The cellular baseband processor 1204 further includes a reception component 1230, a communication manager 1232, and a transmission component 1234. The communication manager 1232 includes the one or more illustrated components. The components of the communication manager 1232 can be stored in the computer-readable medium / memory and / or Figures 8-9(350) and includes the aforementioned additional module of device 1202.

[0104] The receiving component 1230 is configured to receive one or more PL-RSs for each beam pair included in one or more beam pairs when one or more PL-RSs are pre-configured, for example, as described in conjunction with 904. The communication manager 1232 includes a determining component 1240 configured to determine whether one or more PL-RSs are pre-configured for measuring self-interference; and to determine the UL Tx power for FD operation based on the measured self-interference, for example, as described in conjunction with 902 and 910. The communication manager 1232 also includes a measuring component 1242 configured to measure self-interference for one or more beam pairs based on one or more PL-RSs, for example, as described in conjunction with 802 and 908. The communication manager 1232 also includes an application component 1244 configured to: apply a default beampair to measure self-interference when one or more PL-RSs are not pre-configured; apply a default self-interference value as the measured self-interference when one or more PL-RSs are not pre-configured; and apply UL Tx power during FD operation, for example, as described in conjunction with 906 and 912. The communication manager 1232 also includes a remeasurement component 1246 configured to: periodically remeasure self-interference for one or more beamp pairs, for example, as described in conjunction with 916. The communication manager 1232 also includes an adjustment component 1248 configured to: adjust the UL Tx power used for FD operation based on the self-interference measured for one or more beamp pairs, for example, as described in conjunction with 804. The transmission component 1234 is configured to: transmit UL transmissions for FD operation based on the adjustment of the UL Tx power; and transmit UL transmissions based on limiting the maximum value of the UL Tx power, for example, as described in conjunction with 806 and 914.

[0105] The device may include execution Figure 13 The algorithm in the flowchart above consists of additional components in each box. Therefore, it can be executed by these components. Figures 10-11 Each block in the above flowchart, and the apparatus may include one or more of those components. A component may be one or more hardware components specifically configured to perform the process / algorithm, implemented by a processor configured to perform the process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0106] In one configuration, the apparatus 1202, and in particular the cellular baseband processor 1204, includes means for measuring self-interference for one or more beam pairs based on one or more PL-RSs, means for determining UL Tx power for FD operation based on the measured self-interference, and means for applying the UL Tx power during the FD operation. The apparatus 1202 further includes means for transmitting an UL transmission based on limiting the UL Tx power to a maximum value. The apparatus 1202 further includes means for periodically re-measuring the self-interference for the one or more beam pairs. The apparatus 1202 further includes means for determining whether the one or more PL-RSs are preconfigured, wherein the self-interference is measured based on pre-configuration of the one or more PL-RSs. The apparatus 1202 further includes means for applying a default beam pair to measure the self-interference when the one or more PL-RSs are not preconfigured. The apparatus 1202 further includes means for applying a default self-interference value as the measured self-interference when the one or more PL-RSs are not preconfigured. The apparatus 1202 further includes means for receiving one or more PL-RSs for each beam pair included in the one or more beam pairs when the one or more PL-RSs are preconfigured. The apparatus 1202 further includes means for measuring self-interference for the one or more beam pairs based on the one or more PL-RSs, means for adjusting the UL Tx power for FD operation based on the measured self-interference for the one or more beam pairs, and means for transmitting an UL transmission for the FD operation based on the adjustment to the UL Tx power.

[0107] The above-described means can be one or more components of the apparatus 1202 configured to perform the functions recited by the above-described means. As described supra, the apparatus 1202 can include the TX processor 368, the RX processor 356, and the controller / processor 359. As such, in one configuration, the above-described means can be the TX processor 368, the RX processor 356, and the controller / processor 359 configured to perform the functions recited by the above-described means.

[0108] Figures 10-11This is a schematic diagram 1300 illustrating an example of a hardware implementation for device 1302. Device 1302 is a BS and includes a baseband unit 1304. Baseband unit 1304 can communicate with UE 104 via cellular RF transceiver 1322. Baseband unit 1304 may include computer-readable medium / memory. Baseband unit 1304 is responsible for general processing, including executing software stored on the computer-readable medium / memory. When executed by baseband unit 1304, the software causes baseband unit 1304 to perform the various functions described above. The computer-readable medium / memory can also be used to store data manipulated by baseband unit 1304 during software execution. Baseband unit 1304 also includes a receiving component 1330, a communication manager 1332, and a transmitting component 1334. Communication manager 1332 includes one or more components shown. Components within communication manager 1332 may be stored in computer-readable medium / memory and / or configured as hardware within baseband unit 1304. The baseband unit 1304 may be a component of the BS 310 and may include at least one of the TX processor 316, the RX processor 370 and the controller / processor 375 and / or the memory 376.

[0109] The receiving component 1330 is configured to: receive UL transmissions from the UE having UL Tx power based on self-interference measurements triggered by the PL-RS; and receive UL transmissions from the UE based on limiting the maximum value of the UL Tx power, for example, as described in conjunction with 1006, 1106, and 1108. The communication manager 1332 includes a configuration component 1340 configured to: configure PL-RS for one or more beam pairs, for example, as described in conjunction with 1002 and 1102. The communication manager 1332 also includes a scheduler component 1342 configured to: schedule DL transmissions including PL-RS configured for one or more beam pairs for triggering self-interference measurements at the UE; and schedule second DL transmissions including second PL-RS for one or more beam pairs for triggering a re-measurement of self-interference at the UE, for example, as described in conjunction with 1004, 1104, and 1110.

[0110] The device may include execution ​ The algorithm in the flowchart above consists of additional components in each box. Therefore, it can be executed by these components. ​ Each block in the above flowchart, and the apparatus may include one or more of those components. A component may be one or more hardware components specifically configured to perform the process / algorithm, implemented by a processor configured to perform the process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0111] In one configuration, the apparatus 1302, and in particular, the baseband unit 1304, includes means for configuring a PL-RS for one or more beam pairs, means for scheduling a DL transmission including the PL-RS configured for the one or more beam pairs, the PL-RS for triggering a self-interference measurement at a UE, and means for receiving a UL transmission from the UE, the UL transmission having a UL Tx power based on the self-interference measurement triggered by the PL-RS. The apparatus 1302 further includes means for receiving the UL transmission based on limiting the UL Tx power to a maximum value. The apparatus 1302 further includes means for scheduling a second DL transmission including a second PL-RS for one or more beam pairs, the second PL-RS for triggering a re-measurement of self-interference at the UE. The aforementioned means can be one or more of the aforementioned components of the apparatus 1302 configured to perform the functions recited by the aforementioned means. As described supra, the apparatus 1302 can include the TX processor 316, the RX processor 370, and the controller / processor 375. As such, in one configuration, the aforementioned means can be the TX processor 316, the RX processor 370, and the controller / processor 375 configured to perform the functions recited by the aforementioned means.

[0112] It is to be understood that the specific order or hierarchy of steps in the processes / flow diagrams disclosed is an illustration. Based upon design choices, the specific order or hierarchy of steps in the processes / flow diagrams can be re-arranged. Furthermore, some steps can be optional. The accompanying method claims present elements of the various steps in the order in which they are presented in the processes / flow diagrams. The method claims are not meant to be limited to the specific order or hierarchy presented.

[0113] The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other aspects. Thus, the claims are not intended to be limited to the aspects shown herein, but is to be accorded the full scope consistent with the language claims, wherein reference to an item means at least one, unless otherwise specified. The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any aspect described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other aspects. Unless specifically stated otherwise, the term "some" refers to one or more. Combinations such as "at least one of A, B, or C," "one or more of A, B, or C," "at least one of the group consisting of A, B, and C," "one or more of the group consisting of A, B, and C," and "A, B, and / or C or any combination thereof" includes any combination of A, B, and / or C, and can include multiples of A, multiples of B, or multiples of C. Specifically, combinations such as "at least one of A, B, or C," "one or more of A, B, or C," "at least one of the group consisting of A, B, and C," "one or more of the group consisting of A, B, and C," and "A, B, and / or C or any combination thereof" can be A only, B only, C only, A and B, A and C, B and C, or A and B and C, where any such combination can contain one or more member or members of A, B, or C. Structural and functional equivalents of any of the elements of aspects described throughout this disclosure are expressly incorporated herein by reference and are intended to be encompassed by the claims. Moreover, none of the disclosure contained herein is to be deemed as limiting of the scope of the claims other than as to the patentable subject matter recited in the claims. "Module," "mechanism," "element," "device" and the like, unless explicitly stated to the contrary, are not intended to be synonymous with the term "means." As such, embodiments of the claims are not to be limited to the specific examples contained herein but are to include any and all implementations within the scope of the claims. All structural and functional equivalents to the elements of the various aspects described throughout this disclosure that are known or later come to be known to those of ordinary skill in the art are expressly incorporated herein by reference and intended to be encompassed by the claims. Moreover, nothing disclosed herein is intended to be dedicated to the public regardless of whether such disclosure is explicitly recited in the claims. The words "module," "mechanism," "element," "device" and the like can not be a substitute for the word "means." As such, claims employing the word "means" are not to be construed as being limited to mere means plus function claims.

[0114] The following aspects are illustrative only and can be combined with other aspects or teachings described herein, but are not required.

[0115] Aspect 1 is an apparatus for wireless communication at a UE, comprising at least one processor coupled to a memory and configured to measure self-interference for one or more beam pairs based on one or more PL-RSs, adjust an UL Tx power for an FD operation based on the self-interference measured for the one or more beam pairs, and transmit an UL transmission for the FD operation based on the adjustment of the UL Tx power.

[0116] Aspect 2 can be combined with Aspect 1 and includes that the UL Tx power is based on a predefined algorithm, at least one parameter in the predefined algorithm is dependent on the measured self-interference.

[0117] Aspect 3 can be combined with any of aspects 1-2 and includes that limiting a maximum value of the UL Tx power is based on the measured self-interference.

[0118] Aspect 4 can be combined with any of aspects 1-3 and includes that the at least one processor is further configured to transmit the UL transmission based on the limiting the maximum value of the UL Tx power.

[0119] Aspect 5 can be combined with any of aspects 1-4 and includes that a level of the self-interference is different for different beam pairs included in the one or more beam pairs.

[0120] Aspect 6 can be combined with any of aspects 1-5 and includes that the self-interference changes based on at least one of a time period or an environment.

[0121] Aspect 7 can be combined with any of aspects 1-6 and includes that the at least one processor is further configured to periodically re-measure the self-interference for the one or more beam pairs.

[0122] Aspect 8 can be combined with any of aspects 1-7 and includes that the at least one processor is further configured to indicate whether the one or more PL-RSs are pre-configured, and wherein the self-interference is measured based on the pre-configuration of the one or more PL-RSs.

[0123] Aspect 9 can be combined with any of aspects 1-8 and includes that the at least one processor is further configured to apply a default beam pair to measure the self-interference when the one or more PL-RSs are not pre-configured.

[0124] Aspect 10 can be combined with any of aspects 1-9 and includes that the at least one processor is further configured to apply a default self-interference value as the measured self-interference when the one or more PL-RSs are not preconfigured.

[0125] Aspect 11 can be combined with any of aspects 1-10 and includes that the at least one processor is further configured to receive the one or more PL-RSs for each beam pair included in the one or more beam pairs when the one or more PL-RSs are preconfigured.

[0126] Aspect 12 can be combined with any of aspects 1-11 and includes that the one or more PL-RSs are preconfigured via RRC signaling and wherein the one or more PL-RSs are updated in association with at least one of a MAC-CE or DCI.

[0127] Aspect 13 can be combined with any of aspects 1-12 and includes that the one or more PL-RSs are associated with the UL transmission and the DL reception, the UL transmission corresponding to an UL beam in the one or more beam pairs, the DL reception corresponding to a DL beam in the one or more beam pairs.

[0128] Aspect 14 can be combined with any of aspects 1-13 and includes that the UL transmission is at least one of a SRS, a PUSCH, a PUCCH, or a PRACH.

[0129] Aspect 15 can be combined with any of aspects 1-14 and includes that the DL reception is at least one of a CSI-RS, a TRS, or a DM-RS.

[0130] Aspect 16 can be combined with any of aspects 1-15 and further includes at least one of a transceiver or an antenna coupled to the at least one processor.

[0131] Aspect 17 is an apparatus for wireless communication at a base station, comprising at least one processor coupled to a memory and configured to configure a PL-RS for one or more beam pairs, schedule a DL transmission including the PL-RS configured for the one or more beam pairs, the PL-RS for triggering a self-interference measurement at a UE, and receive an UL transmission from the UE, the UL transmission having an UL Tx power based on the self-interference measurement triggered by the PL-RS.

[0132] Aspect 18 can be combined with Aspect 17 and includes that the UL Tx power is based on a predefined algorithm, at least one parameter in the predefined algorithm is dependent on the self-interference measurement triggered by the PL-RS.

[0133] Aspect 19 can be combined with any of aspects 17-18 and includes that a maximum value limiting the UL Tx power is based on the self-interference measurement triggered by the PL-RS.

[0134] Aspect 20 can be combined with any of aspects 17-19 and includes that to receive the UL transmission from the UE, the at least one processor is further configured to receive the UL transmission based on the maximum value limiting the UL Tx power.

[0135] Aspect 21 can be combined with any of aspects 17-20 and includes that different pairs of beams in the one or more pairs of beams correspond to different self-interference levels.

[0136] Aspect 22 can be combined with any of aspects 17-21 and includes that the self- interference levels change based on at least one of a time period or an environment.

[0137] Aspect 23 can be combined with any of aspects 17-22 and includes that the at least one processor is further configured to schedule a second DL transmission including a second PL-RS for the one or more pairs of beams, the second PL-RS to trigger a re-measurement of self-interference at the UE.

[0138] Aspect 24 can be combined with any of aspects 17-23 and includes that the PL-RS is configured via RRC signaling, and wherein the PL-RS is updated in association with at least one of a MAC-CE or DCI.

[0139] Aspect 25 can be combined with any of aspects 17-24 and includes that the PL-RS is associated with an UL beam in the one or more pairs of beams and a DL beam in the one or more pairs of beams.

[0140] Aspect 26 can be combined with any of aspects 17-25 and includes that the UL beam is at least one of a SRS, a PUSCH, a PUCCH, or a PRACH.

[0141] Aspect 27 can be combined with any of aspects 17-26 and includes that the DL beam is at least one of a CSI-RS, a TRS, or a DM-RS.

[0142] Aspect 28 can be combined with any of aspects 17-27 and further includes at least one of a transceiver or an antenna coupled to the at least one processor.

[0143] Aspect 29 is a method of wireless communication for implementing any of aspects 1-28.

[0144] Aspect 30 is an apparatus for wireless communication including means for implementing any of aspects 1-28.

[0145] Aspect 31 is a computer-readable medium storing computer executable code, when executed by at least one processor, causes the at least one processor to implement any of aspects 1-28.

Claims

1. An apparatus for wireless communication at a user equipment (UE), comprising: Memory; as well as At least one processor, coupled to the memory, is configured to: Self-interference for one or more beam pairs is measured based on one or more path loss (PL) reference signals (RS) (PL-RS), wherein the PL-RS is configured to trigger self-interference measurement at the UE; The uplink (UL) transmit (Tx) power for full-duplex (FD) operation is adjusted based on the self-interference measured for the one or more beam pairs; and The UL transmission for the FD operation is transmitted based on the adjustment of the UL Tx power.

2. The apparatus according to claim 1, wherein, The UL Tx power is based on a predefined algorithm, in which at least one parameter depends on the measured self-interference.

3. The apparatus according to claim 1, wherein, The maximum value of the UL Tx power is limited based on the measured self-interference.

4. The apparatus according to claim 3, wherein, The at least one processor is also configured to transmit the UL transmission based on the maximum value of the UL Tx power limit.

5. The apparatus according to claim 1, wherein, The level of self-interference is different for different beam pairs included in the one or more beam pairs.

6. The apparatus according to claim 1, wherein, The self-interference of the one or more beam pairs changes based on at least one of the time period or the environment.

7. The apparatus according to claim 6, wherein, The at least one processor is also configured to periodically remeasure the self-interference for the one or more beam pairs.

8. The apparatus according to claim 1, wherein, The at least one processor is further configured to: indicate whether the one or more PL-RS are pre-configured, and wherein the self-interference is measured based on the pre-configuration of the one or more PL-RS.

9. The apparatus according to claim 8, wherein, The at least one processor is also configured to apply a default beam pair to measure the self-interference when the one or more PL-RS are not pre-configured.

10. The apparatus according to claim 8, wherein, The at least one processor is also configured to apply a default self-interference value as the measured self-interference when the one or more PL-RS are not pre-configured.

11. The apparatus according to claim 8, wherein, The at least one processor is further configured to receive the one or more PL-RS for each beam pair included in the one or more beam pairs when the one or more PL-RS are pre-configured.

12. The apparatus according to claim 8, wherein, The one or more PL-RS are pre-configured via Radio Resource Control (RRC) signaling, and wherein the one or more PL-RS are updated in association with at least one of Media Access Control-Control Element (MAC-CE) or Downlink Control Information (DCI).

13. The apparatus according to claim 8, wherein, The one or more PL-RS are associated with the UL transmission and downlink (DL) reception, the UL transmission corresponding to the UL beam in the one or more beam pairs, and the DL reception corresponding to the DL beam in the one or more beam pairs.

14. The apparatus according to claim 13, wherein, The UL transmission is at least one of the following: Sound Reference Signal (SRS), Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), or Physical Random Access Channel (PRACH).

15. The apparatus according to claim 13, wherein, The DL reception is at least one of Channel State Information Reference Signal (CSI-RS), Tracking Reference Signal (TRS), or Demodulation Reference Signal (DM-RS).

16. The apparatus according to claim 1, further comprising: At least one of the transceivers or antennas coupled to the at least one processor.

17. An apparatus for wireless communication at a base station, comprising: Memory; as well as At least one processor, coupled to the memory, is configured to: Configure a path loss (PL) reference signal (RS) (PL-RS) for one or more beam pairs, wherein the PL-RS is configured to trigger self-interference measurement at the user equipment (UE); Scheduling includes downlink (DL) transmissions of the PL-RS configured for the one or more beam pairs; and The UE receives uplink (UL) transmissions, wherein the UL transmissions are configured with UL transmit (Tx) power based on the self-interference measurement triggered by the transmitted PL-RS.

18. The apparatus according to claim 17, wherein, The UL Tx power is based on a predefined algorithm, in which at least one parameter depends on the self-interference measurement triggered by the PL-RS.

19. The apparatus according to claim 17, wherein, The maximum value of the UL Tx power is limited based on the self-interference measurement triggered by the PL-RS.

20. The apparatus according to claim 19, wherein, In order to receive the UL transmission from the UE, the at least one processor is further configured to receive the UL transmission based on the maximum value of limiting the UL Tx power.

21. The apparatus according to claim 17, wherein, Different beam pairs in the one or more beam pairs correspond to different levels of self-interference.

22. The apparatus according to claim 21, wherein, The self-interference level changes based on at least one of the time period or the environment.

23. The apparatus according to claim 22, wherein, The at least one processor is further configured to schedule a second DL transmission including a second PL-RS for the one or more beam pairs, the second PL-RS being used to trigger a remeasurement of the self-interference at the UE.

24. The apparatus according to claim 17, wherein, The PL-RS is configured via Radio Resource Control (RRC) signaling, and wherein the PL-RS is updated in association with at least one of Media Access Control-Control Element (MAC-CE) or Downlink Control Information (DCI).

25. The apparatus according to claim 17, wherein, The PL-RS is associated with the UL beam and the DL beam in one or more beam pairs.

26. The apparatus according to claim 25, wherein, The UL beam is at least one of the following: Sound Reference Signal (SRS), Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), or Physical Random Access Channel (PRACH).

27. The apparatus according to claim 25, wherein, The DL beam is at least one of the following: Channel State Information Reference Signal (CSI-RS), Tracking Reference Signal (TRS), or Demodulation Reference Signal (DM-RS).

28. The apparatus of claim 17, further comprising: At least one of the transceivers or antennas coupled to the at least one processor.

29. A method for wireless communication at a user equipment (UE), comprising: Self-interference for one or more beam pairs is measured based on one or more path loss (PL) reference signals (RS) (PL-RS), wherein the PL-RS is configured to trigger self-interference measurement at the UE; The uplink (UL) transmit (Tx) power for full-duplex (FD) operation is adjusted based on the self-interference measured for the one or more beam pairs; and The UL transmission for the FD operation is transmitted based on the adjustment of the UL Tx power.

30. A method for wireless communication at a base station, comprising: Configure a path loss (PL) reference signal (RS) (PL-RS) for one or more beam pairs, wherein the PL-RS is configured to trigger self-interference measurement at the user equipment (UE); Scheduling includes downlink (DL) transmissions of the PL-RS configured for the one or more beam pairs; and The UE receives uplink (UL) transmissions, wherein the UL transmissions are configured with UL transmit (Tx) power based on the self-interference measurement triggered by the transmitted PL-RS.

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