Avoiding and coping with the possibility of sudden receiver damage in self-interference measurements

Abstract

Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for detecting the possibility of damage to a receiver during a self-interference measurement procedure and taking steps to avoid or mitigate such damage.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to U.S. Application No. 17 / 243,968, filed on April 29, 2021, which claims the benefit of and priority to U.S. Provisional Patent Application No. 63 / 019,102, filed on May 1, 2020, both of which are assigned to the assignee of the present invention and are incorporated herein by reference in their entireties as if fully set forth below and for all applicable purposes. Technical Field

[0003] Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for detecting the possibility of damage to a receiver during a self-interference measurement procedure and taking steps to avoid or mitigate such damage. Background Art

[0004] Wireless communication systems are widely deployed to provide various telecommunication services, such as telephony, video, data, messaging, and broadcast. These wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple-access systems include 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, 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, to name a few.

[0005] In some examples, a wireless multiple access communication system may include multiple base stations (BSs), each of which is capable of simultaneously supporting communications for multiple communication devices (or user equipment (UE)). In an LTE or LTE-A network, a collection of one or more base stations may define an eNodeB (eNB). In other examples (e.g., in next-generation, new radio (NR) or 5G networks), a wireless multiple access communication system may include multiple distributed units (e.g., edge units (EUs), edge nodes (ENs), radio heads (RHs), smart radio heads (SRHs), transmission reception points (TRPs), etc.) communicating with multiple central units (CUs) (e.g., central nodes (CNs), access node controllers (ANCs), etc.), where a group of one or more DUs communicating with the central unit may define an access node (e.g., which may be referred to as a base station, 5G NB, next-generation NodeB (gNB or gNodeB), TRP, etc.). A base station or distributed unit may communicate with a collection of UEs on a downlink channel (e.g., for transmissions from the base station or distributed unit to the UE) and an uplink channel (e.g., for transmissions from the UE to the base station or distributed unit).

[0006] These multiple access technologies are being adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at the city, country, regional, and even global levels. New Radio (NR), such as 5G, is an example of an emerging telecommunication standard. NR is a set of enhancements to the LTE mobile standard promulgated by 3GPP. NR aims to better support mobile broadband internet access by increasing spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and better integrating with other open standards using OFDMA with cyclic prefix (CP) on the downlink (DL) and uplink (UL). To this end, NR supports beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.

[0007] However, as demand for mobile broadband access continues to grow, there is a need for further improvements to NR and LTE technologies. Preferably, these improvements should also be applicable to other multi-access technologies and the telecommunication standards that employ them. Summary of the Invention

[0008] The systems, methods, and devices of the present disclosure each have several aspects, no single aspect being solely responsible for its desirable attributes. Without limiting the scope of the disclosure as expressed in the appended claims, some features will now be briefly discussed. After considering this discussion, and particularly after reading the section entitled "Detailed Description," one will understand how the features of the present disclosure provide advantages, including improved communication between access points and stations in a wireless network.

[0009] Certain aspects of the present disclosure provide a method for wireless communication by a user equipment (UE). The method generally includes: transmitting an uplink reference signal (RS) via a first antenna panel; performing self-interference measurement based on the uplink RS received via a second antenna panel; and reducing at least one of a transmit power of the uplink RS or a function of a receiver based on the self-interference measurement.

[0010] Certain aspects of the present disclosure provide an apparatus for wireless communication by a UE. The apparatus generally includes a memory and at least one processor coupled to the memory, the memory and the at least one processor being configured to: transmit an uplink RS via a first antenna panel; perform self-interference measurements based on the uplink RS received via a second antenna panel; and, based on the self-interference measurements, reduce at least one of the transmit power of the uplink RS or a function of a receiver.

[0011] Certain aspects of the present disclosure provide an apparatus for wireless communication by a UE. The apparatus generally includes: means for transmitting an uplink RS via a first antenna panel; means for performing self-interference measurements based on the uplink RS received via a second antenna panel; and means for reducing at least one of the transmit power of the uplink RS or the functionality of the receiver based on the self-interference measurements.

[0012] Certain aspects of the present disclosure provide a computer-readable medium having stored thereon instructions for performing the following operations: transmitting an uplink RS via a first antenna panel; performing self-interference measurement based on the uplink RS received via a second antenna panel; and reducing at least one of the transmission power of the uplink RS or the function of the receiver based on the self-interference measurement.

[0013] Certain aspects of the present disclosure provide a method for wireless communications by a network entity. The method generally includes: receiving an indication from a UE that the UE has detected a condition based on a self-interference measurement performed based on an uplink RS transmitted via a first antenna panel of the UE and received via a second antenna panel of the UE; and, in response to detecting the condition, signaling the UE to at least one of reduce transmit power of the uplink RS or reduce a function of a receiver.

[0014] Certain aspects of the present disclosure provide an apparatus for wireless communication by a network entity. The apparatus generally includes a memory and at least one processor coupled to the memory, the memory and the at least one processor being configured to: receive an indication from a UE that the UE has detected a condition based on a self-interference measurement performed based on an uplink RS transmitted via a first antenna panel of the UE and received via a second antenna panel of the UE; and, in response to detecting the condition, signal the UE to at least one of reduce the transmit power of the uplink RS or reduce the functionality of the receiver.

[0015] Certain aspects of the present disclosure provide an apparatus for wireless communication by a network entity. The apparatus generally includes: means for receiving an indication from a UE that the UE has detected a condition based on self-interference measurements performed based on uplink RS transmitted via a first antenna panel of the UE and received via a second antenna panel of the UE; and means for signaling the UE to at least one of reduce the transmit power of the uplink RS or reduce the functionality of the receiver in response to detecting the condition.

[0016] Certain aspects of the present disclosure provide a computer-readable medium having stored thereon instructions for performing the following operations: receiving an indication from a UE that the UE has detected a condition based on a self-interference measurement, the self-interference measurement being performed based on an uplink RS transmitted via a first antenna panel of the UE and received via a second antenna panel of the UE; and in response to detecting the condition, signaling the UE to reduce at least one of the transmit power of the uplink RS or the function of the receiver.

[0017] To accomplish the foregoing and related ends, one or more aspects include the features hereinafter fully described and particularly pointed out in the claims. The following description and the accompanying drawings set forth in detail certain illustrative features of one or more aspects. However, these features are indicative of but a few of the various ways in which the principles of the various aspects may be employed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order that the manner in which the above-mentioned features of the present disclosure may be understood in detail, a more particular description of the above brief summary may be given by reference to various aspects (some of which are illustrated in the accompanying drawings). It should be noted, however, that the drawings illustrate only certain typical aspects of the present disclosure and are therefore not to be considered limiting of its scope, as the description may admit to other equally effective aspects.

[0019] Figure 1 is a block diagram conceptually illustrating an example telecommunications system in accordance with certain aspects of the present disclosure.

[0020] Figure 2is a block diagram conceptually illustrating designs of an exemplary base station (BS) and user equipment (UE), in accordance with certain aspects of the present disclosure.

[0021] Figure 3 Illustrated are examples of frame formats for New Radio (NR) systems, in accordance with certain aspects of the present disclosure.

[0022] Figures 4 to 6 Different use cases of full-duplex communications are illustrated in which aspects of the present disclosure may be utilized.

[0023] Figure 7 Summary Figures 4 to 6 The use case shown in .

[0024] Figure 8 Illustrated are example operations for wireless communications by a user equipment (UE), in accordance with certain aspects of the present disclosure.

[0025] Figure 9 Illustrated are example operations for wireless communications by a network entity, in accordance with certain aspects of the present disclosure.

[0026] Figure 10A and Figure 10B is a call flow diagram illustrating various aspects of the present disclosure.

[0027] Figure 11 and Figure 12 1 illustrates a device capable of performing the operations described herein, in accordance with certain aspects of the present disclosure.

[0028] To facilitate understanding, identical reference numerals have been used, where possible, to designate identical elements that are common to the figures. It is contemplated that elements disclosed in one aspect may be beneficially utilized on other aspects without specific recitation. DETAILED DESCRIPTION

[0029] Aspects of the present disclosure relate to wireless communications and, more particularly, to techniques for detecting the possibility of damage to a receiver based on self-interference measurements and taking steps to avoid or mitigate such damage.

[0030] As described in more detail below, these techniques can help enable full-duplex communication using self-interference measurements, for example, to select transmit and receive beam pairs. Such beam pairs can be selected to provide sufficient beam separation to allow simultaneous transmission and reception on different antenna panels within the same frequency range. The techniques described herein can allow for efficient selection of such beam pairs while protecting the receiver from damage.

[0031] An antenna panel generally refers to an arrangement (e.g., an array) of antenna elements. For example, to reduce cost and save power, a relatively large number of antenna elements can be assembled into multiple antenna panels. NR supports multi-panel antenna array operation by introducing new reference signals, measurements, and reporting procedures. Aspects of the present disclosure can provide protection from damaging receiver components connected to one antenna panel when transmitting signals from another antenna panel.

[0032] The following description provides examples, not limitations on the scope, applicability, or examples set forth in the claims. Changes may be made to the functions and arrangements of the elements discussed without departing from the scope of this disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the method may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, the features described for some examples may be combined in some other examples. For example, a device or method may be implemented using any number of the aspects set forth herein. In addition, the scope of this disclosure is intended to cover such a device or method that is practiced using other structures, functions, or structures and functions in addition to or different from the various aspects of this disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the claims. 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 superior to other aspects.

[0033] The techniques described herein can be used for various wireless communication technologies, such as LTE, CDMA, TDMA, FDMA, OFDMA, SC-FDMA, and other networks. The terms "network" and "system" are often used interchangeably. A CDMA network can implement radio technologies such as Universal Terrestrial Radio Access (UTRA), cdma2000, and the like. UTRA includes Wideband CDMA (WCDMA) and other CDMA variants. cdma2000 covers the IS-2000, IS-95, and IS-856 standards. A TDMA network can implement radio technologies such as Global System for Mobile Communications (GSM). An OFDMA network can implement radio technologies such as NR (e.g., 5G RA), Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDMA, and the like. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS).

[0034] New Radio (NR) is an emerging wireless communication technology being developed in conjunction with the 5G Technology Forum (5GTF). 3GPP Long Term Evolution (LTE) and Advanced LTE (LTE-A) are versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization called the "3rd Generation Partnership Project" (3GPP). cdma2000 and UMB are described in documents from an organization called the "3rd Generation Partnership Project 2" (3GPP2). The techniques described herein can be used for the wireless networks and radio technologies mentioned above as well as other wireless networks and radio technologies. For clarity, although terms commonly associated with 3G and / or 4G wireless technologies may be used herein to describe various aspects, various aspects of the present disclosure may be applied to other generation-based communication systems, such as 5G and later technologies, including NR technology.

[0035] New Radio (NR) access (e.g., 5G technology) can support various wireless communication services, such as enhanced mobile broadband (eMBB) for wide bandwidth (e.g., 80 MHz or higher), millimeter wave (mmW) for high carrier frequency (e.g., 25 GHz or higher), massive machine type communication (mMTC) for non-backward compatible MTC technology, and / or mission critical ultra-reliable low latency communication (URLLC). These services may include latency and reliability requirements. These services may also have different transmission time intervals (TTIs) to meet their respective quality of service (QoS) requirements. In addition, these services may coexist in the same subframe.

[0036] Wireless communication system example

[0037] Figure 1 An exemplary wireless communication network 100 (e.g., an NR / 5G network) is shown in which aspects of the present disclosure may be performed. For example, the wireless network 100 may include a UE 120 configured to perform Figure 8

[0066] Similarly, the wireless network 100 may include a processor configured to perform operations 800 to detect possible damage to a receiver based on self-interference measurements (e.g., measurements made during a self-interference measurement procedure). Figure 9 Operation 900 may include, for example, BS 110 receiving signaling indicating (performing) Figure 8 Operation 800) The UE detects possible damage to the receiver during a self-interference measurement procedure.

[0038] like Figure 1As shown, wireless network 100 may include multiple base stations (BSs) 110 and other network entities. A BS may be a station that communicates with a user equipment (UE). Each BS 110 may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to the coverage area of ​​a NodeB (NB) and / or a NodeB subsystem serving that coverage area, depending on the context in which the term is used. In NR systems, the term "cell" and next-generation NodeB (gNB), new radio base station (NR BS), 5G NB, access point (AP), or transmission reception point (TRP) may be used interchangeably. In some examples, a cell may not necessarily be fixed, and the geographic area of ​​a cell may move depending on the location of a mobile BS. In some examples, base stations may be interconnected with each other and / or with one or more other base stations or network nodes (not shown) in wireless communication network 100 via various types of backhaul interfaces (such as direct physical connections, wireless connections, virtual networks, or the like using any suitable delivery network).

[0039] Generally, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific radio access technology (RAT) and can operate on one or more frequencies. RAT can also be referred to as radio technology, air interface, etc. Frequency can also be referred to as carrier, subcarrier, frequency channel, frequency modulation, subband, etc. Each frequency can support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0040] A base station (BS) may provide communication coverage for macro cells, pico cells, femto cells, and / or other types of cells. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access to UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access to UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access to UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs of users in a home, etc.). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1In the example shown, BSs 110a, 110b, and 110c may be macro BSs for macro cells 102a, 102b, and 102c, respectively. BS 110x may be a pico BS for pico cell 102x. BSs 110y and 110z may be femto BSs for femto cells 102y and 102z, respectively. A BS may support one or more (e.g., three) cells.

[0041] The wireless communication network 100 may also include a relay station. A relay station is a station that receives transmissions of data and / or other information from an upstream station (e.g., a BS or UE) and transmits transmissions of data and / or other information to a downstream station (e.g., a UE or BS). A relay station may also be a UE that relays transmissions for other UEs. Figure 1 In the example shown, a relay station 110r may communicate with a BS 110a and a UE 120r to facilitate communication between the BS 110a and the UE 120r. A relay station may also be referred to as a relay BS, a relay, or the like.

[0042] The wireless network 100 may be a heterogeneous network including different types of BSs, such as macro BSs, pico BSs, femto BSs, repeaters, etc. These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 20 watts), while a pico BS, a femto BS, and a repeater may have a lower transmit power level (e.g., 1 watt).

[0043] The wireless communication network 100 can support synchronous or asynchronous operation. For synchronous operation, the BSs can have similar frame timing, and transmissions from different BSs can be roughly aligned over time. For asynchronous operation, the BSs can have different frame timing, and transmissions from different BSs can be misaligned over time. The techniques described herein can be used for both synchronous and asynchronous operation.

[0044] A network controller 130 may be coupled to a set of BSs and may provide coordination and control for these BSs. The network controller 130 may communicate with the BSs 110 via a backhaul. The BSs 110 may also communicate with each other (e.g., directly or indirectly) via a wireless or wired backhaul.

[0045] UEs 120 (e.g., 120x, 120y, etc.) may be dispersed throughout the wireless network 100, and each UE may be fixed or mobile. A UE may also be referred to as a mobile station, terminal, access terminal, subscriber unit, station, customer premises equipment (CPE), cellular phone, smart phone, personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, laptop computer, cordless phone, wireless local loop (WLL) station, tablet computer, camera, gaming device, netbook, smartbook, ultrabook, appliance, medical device or medical equipment, biosensor / device, wearable device (such as smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet, etc.)), entertainment device (e.g., music device, video device, satellite radio, etc.), vehicle component or sensor, smart meter / sensor, industrial manufacturing equipment, global positioning system device, gaming device, augmented reality device (augmented reality (AR), extended reality (XR), or virtual reality (VR)), or any other suitable device configured to communicate via a wireless or wired medium.

[0046] Some UEs may be considered machine type communication (MTC) devices or evolved MTC (eMTC) devices. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc. that can communicate with a BS, another device (e.g., a remote device), or some other entity. For example, a wireless node may provide connectivity to or to a network (e.g., a wide area network such as the Internet or a cellular network) via a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices, which may be narrowband IoT (NB-IoT) devices.

[0047] Some wireless networks (e.g., LTE) utilize orthogonal frequency division multiplexing (OFDM) on the downlink and single-carrier frequency division multiplexing (SC-FDM) on the uplink. OFDM and SC-FDM divide the system bandwidth into multiple (K) orthogonal subcarriers, often also referred to as tones, bins, etc. Each subcarrier can be modulated with data. Typically, modulation symbols are transmitted in the frequency domain with OFDM and in the time domain with SC-FDM. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers (K) can be dependent on the system bandwidth. For example, the subcarrier spacing can be 15 kHz, and the minimum resource allocation (called a "resource block" (RB)) can be 12 subcarriers (or 180 kHz). Therefore, for system bandwidths of 1.25, 2.5, 5, 10, or 20 megahertz (MHz), the nominal fast Fourier transform (FFT) size can be equal to 128, 256, 512, 1024, or 2048, respectively. The system bandwidth may also be divided into subbands. For example, a subband may cover 1.08 MHz (ie, 6 resource blocks), and there may be 1, 2, 4, 8, or 16 subbands for system bandwidths of 1.25, 2.5, 5, 10, or 20 MHz, respectively.

[0048] Although various aspects of the examples described herein may be associated with LTE technology, various aspects of the present disclosure may be applicable to other wireless communication systems, such as NR. NR may use OFDM with CP on both the uplink and downlink and include support for half-duplex operation using TDD. Beamforming may be supported, and the beam direction may be dynamically configured. MIMO transmission with precoding may also be supported. MIMO configurations in the DL may support up to 8 transmit antennas, with multi-layer DL transmission of up to 8 streams and up to 2 streams per UE. Multi-layer transmission with up to 2 streams per UE may be supported. Aggregation of multiple cells may be supported with up to 8 serving cells.

[0049] In some scenarios, air interface access may be scheduled. For example, a scheduling entity (e.g., a base station (BS), Node B, eNB, gNB, etc.) allocates resources for communication between some or all devices and equipment within its service area or cell. The scheduling entity may be responsible for scheduling, assigning, reconfiguring, and releasing resources for one or more subordinate entities. That is, for scheduled communications, subordinate entities may utilize resources allocated by one or more scheduling entities.

[0050] A base station is not the only entity that can act as a scheduling entity. In one example, a UE can act as a scheduling entity and can schedule resources for one or more subordinate entities (e.g., one or more other UEs), and the other UEs can use the resources scheduled by the UE for wireless communication. In some examples, a UE can act as a scheduling entity in a peer-to-peer (P2P) network and / or a mesh network. In the mesh network example, in addition to communicating with the scheduling entity, the UEs can also communicate directly with each other.

[0051] Return to Figure 1 , which illustrates various potential deployments for various deployment scenarios. For example, in Figure 1 , a solid line with double arrows indicates desired transmissions between a UE and a serving BS, which is a BS designated to serve the UE on the downlink and / or uplink. A thin dashed line with double arrows indicates interfering transmissions between the UE and the BS. Other lines illustrate component-to-component (e.g., UE-to-UE) communication options.

[0052] Figure 2 1 illustrates a BS 110a and a UE 120a (e.g., in FIG. Figure 1 Example components of the wireless communication network 100).

[0053] At BS 110a, a transmit processor 220 may receive data from a data source 212 and control information from a controller / processor 240. This control information may be for a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a physical hybrid ARQ indicator channel (PHICH), a physical downlink control channel (PDCCH), a group common PDCCH (GC PDCCH), or the like. This data may be for a physical downlink shared channel (PDSCH), or the like. Processor 220 may process (e.g., encode and symbol map) the data and control information to obtain data symbols and control symbols, respectively. Transmit processor 220 may also generate reference symbols, such as for a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a cell-specific reference signal (CRS). A transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​the data symbols, control symbols, and / or reference symbols (if applicable), and may provide output symbol streams to modulators (MODs) 232a-232t. Each modulator 232 can process a corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator can further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The downlink signals from modulators 232a-232t can be transmitted via antennas 234a-234t, respectively.

[0054] At UE 120a, antennas 252a-252r can receive downlink signals from BS 110a and can provide received signals to demodulators (DEMODs) in transceivers 254a-254r, respectively. Each demodulator 254 can condition (e.g., filter, amplify, downconvert, and digitize) a corresponding received signal to obtain input samples. Each demodulator can further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 can obtain received symbols from all demodulators 254a-254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 258 can process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for UE 120a to a data sink 260, and provide decoded control information to a controller / processor 280.

[0055] On the uplink, at UE 120a, a transmit processor 264 may receive and process data from a data source 262 (e.g., for a physical uplink shared channel (PUSCH)) and control information from a controller / processor 280 (e.g., for a physical uplink control channel (PUCCH)). The transmit processor 264 may also generate reference symbols for reference signals (e.g., for a sounding reference signal (SRS)). If applicable, the symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266, further processed by a demodulator in transceivers 254a-254r (e.g., for SC-FDM, etc.), and transmitted to BS 110a. At BS 110a, the uplink signal from UE 120a may be received by antenna 234, processed by modulator 232, detected by MIMO detector 236, if applicable, and further processed by receive processor 238 to obtain decoded data and control information transmitted by UE 120a. The receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to the controller / processor 240 .

[0056] Memories 242 and 282 may store data and program codes for BS 110a and UE 120a, respectively. A scheduler 244 may schedule UEs for data transmission on the downlink and / or uplink.

[0057] The controller / processor 280 and / or other processors and modules at the UE 120a may perform or direct the execution of processes for the techniques described herein. For example, the controller / processor 280 and / or other processors and modules at the UE 120a may perform (or be used by the UE 120a to perform) Figure 8 Similarly, the controller / processor 240 and / or other processors and modules at BS 110a may perform or direct the execution of processes for the techniques described herein. For example, the controller / processor 240 and / or other processors and modules at BS 110a may perform (or be used by BS 121a to perform) Figure 9 9. Although illustrated at the controller / processor, other components of the UE 120a or BS 110a may be used to perform the operations described herein.

[0058] The embodiments discussed herein may include various spacing and timing deployments. For example, in LTE, the basic transmission time interval (TTI) or packet duration is a 1ms subframe. In NR, the subframe is still 1ms, but the basic TTI is called a time slot. A subframe contains a variable number of time slots (e.g., 1, 2, 4, 8, 16 time slots) depending on the subcarrier spacing (SCS). An NR RB is 12 consecutive frequency subcarriers. NR can support a basic subcarrier spacing of 15KHz, and other subcarrier spacings such as 30kHz, 60kHz, 120kHz, 240kHz, etc. can be defined relative to the basic subcarrier spacing. The symbol and time slot lengths are proportional to the subcarrier spacing. The CP length also depends on the subcarrier spacing.

[0059] Figure 3 is a diagram showing an example of a frame format 600 for NR. The transmission timeline for each of the downlink and uplink can be divided into units of radio frames. Each radio frame can have a predetermined duration (e.g., 10 ms) and can be divided into 10 subframes with indices 0 to 9, each subframe being 1 ms. Depending on the subcarrier spacing, each subframe can include a variable number of time slots. Depending on the subcarrier spacing, each time slot can include a variable number of symbol periods (e.g., 7 or 14 symbols). The symbol periods in each time slot can be assigned an index. A microslot is a subslot structure (e.g., 2, 3, or 4 symbols).

[0060] Each symbol in a slot can indicate the link direction of data transmission (e.g., DL, UL, or flexible), and the link direction can be dynamically switched for each subframe. The link direction can be based on the slot format. Each slot can include DL / UL data and DL / UL control information.

[0061] In NR, a synchronization signal (SS) block (SSB) is transmitted. The SS block includes PSS, SSS, and dual-symbol PBCH. The SS block can be transmitted in a fixed time slot position, such as Figure 3Symbols 0-3 are shown. The UE can use the PSS and SSS for cell search and acquisition. The PSS provides half-frame timing, and the SS provides CP length and frame timing. The PSS and SSS provide cell identification. The PBCH carries basic system information such as downlink system bandwidth, timing information within radio frames, SS burst set period, and system frame number.

[0062] Other system information such as Remaining Minimum System Information (RMSI), System Information Block (SIB), Other System Information (OSI) may be sent on the Physical Downlink Shared Channel (PDSCH) in certain subframes.

[0063] Example of detecting and mitigating potential damage to a receiver during self-interference measurements

[0064] Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for detecting the potential for damage to a receiver. For example, a UE may detect a condition indicating a risk of damage to a receiver based on self-interference measurements (e.g., performed during a self-interference measurement procedure). Based on the detection, the UE may take measures to avoid or mitigate such damage, such as reducing the transmit power of uplink reference signals or reducing receiver functionality. These techniques may help enable full-duplex communication using a self-interference measurement procedure, for example, selecting transmit and receive beam pairs (to provide sufficient beam separation) while protecting receiver components from damage.

[0065] The technology provided in this article can be applied in various frequency bands for NR. For example, for the higher frequency band called FR4 (e.g., 52.6GHz-114.25GHz), an OFDM waveform with a very large subcarrier spacing (960kHz-3.84MHz) is required to combat severe phase noise. Due to the large subcarrier spacing, the time slot length is often very short. In the lower frequency band with 120kHz SCS called FR2 (24.25GHz to 52.6GHz), the time slot length is 125 microseconds, while in FR4 at 960kHz, the time slot length is 15.6 microseconds. In some cases, a frequency band called FR2x can be used.

[0066] There are various motivations for utilizing full-duplex (FD) communications, such as for simultaneous UL / DL transmissions in FR2. In some cases, FD capabilities can enable flexible time-division duplex (TDD) capabilities at the gNB, the UE, or both. As an example, at the UE, UL transmissions can be transmitted from one antenna panel (of multiple panels), while DL reception can be performed at another antenna panel.

[0067] Flexible TDD capability may depend on beam separation (e.g., the ability to find a transmitter / receiver (Tx / Rx) beam pair that achieves sufficient separation). Flexible TDD capability may mean, for example, that a UE or base station is able to use FDD on time slots that are normally reserved for uplink-only or downlink-only time slots (or flexible time slots that can be dynamically indicated as uplink or downlink). Thus, potential benefits of full-duplex communication include reduced latency (e.g., DL signals can be received in time slots that are conventionally considered UL-only, which can achieve latency savings), enhanced spectral efficiency (per cell and / or per UE), and overall more efficient resource utilization.

[0068] Figure 4 、 Figure 5 and Figure 6 An exemplary use case for FD communication is illustrated. Figure 7 Some possible characteristics of these use cases are summarized.

[0069] like Figure 4 As shown, for a first use case (Use Case 1), a UE 120 can simultaneously communicate with a first transmitter receiver point (TRP 1) 110a on the downlink while transmitting to a second TRP 110b on the uplink. For this use case, flexible TDD can be disabled at the gNB (TRP) and enabled at the UE.

[0070] like Figure 5 As shown, for the second use case (Use Case 2), a BS 110 can simultaneously communicate with a first UE (UE 1 120a) on the downlink and a second UE (UE 2 120b) on the uplink. For this use case, flexible TDD can be enabled at the BS (e.g., gNB) and disabled at the UE. This use case of enabling flexible TDD at the gNB and disabling it at the UE may also be applicable to integrated access and backhaul (IAB) applications.

[0071] like Figure 6 As shown, for the third use case (Use Case 3), UE 120 can communicate with base station 110 simultaneously, transmitting on the uplink and receiving on the downlink. For this use case, flexible TDD can be enabled at both the base station / gNB and the UE.

[0072] In some cases, self-interference measurements (SIM) may be required at the UE to enable full-duplex transmission. For example, self-interference measurements can be used to select transmit and receive beam pairs that achieve appropriate beam separation. For example, appropriate beam separation for the transmit and receive beam pairs can be indicated by performing relatively low self-interference measurements on one panel (using the receive beam) while simultaneously transmitting uplink reference signals using another panel (using the transmit beam). Thus, during the SIM procedure, the UE can transmit reference signals on the uplink using a first antenna panel while measuring reference signals using a second antenna panel (on the downlink).

[0073] When performing self-interference measurements, if the Tx power from one panel is too high, the receiver from the other panel of the UE may be damaged without sufficient beam separation. This scenario may occur, for example, due to clutter echoes (reflections that may increase the amplitude of the received signal).

[0074] Various aspects of the present invention provide techniques for detecting (sensing) conditions associated with potential damage to a UE receiver during a SIM procedure and taking steps to avoid or mitigate such damage. For example, upon detecting such a condition, the UE may be configured to reduce the transmit power of uplink reference signals or reduce receiver functionality.

[0075] Figure 8 and Figure 9 Example operations that may be performed by a UE and a network entity, respectively, are illustrated for detecting potential impairment to a UE receiver based on self-interference measurements and taking steps to avoid or mitigate such impairment.

[0076] Figure 8 Example operations 800 for wireless communications by a UE are shown, in accordance with certain aspects of the present disclosure. For example, operations 800 may be performed by Figure 1 The UE 120 performs self-interference measurement to detect and mitigate potential damage to the UE receiver.

[0077] Operations 800 begin at 802 by transmitting an uplink reference signal (RS) via a first antenna panel. For example, in some cases, the uplink RS may be transmitted in multiple symbols, with the transmit power of each symbol increasing as sensing is performed to detect conditions associated with potential damage to the receiver.

[0078] At 804, the UE performs self-interference measurement based on the uplink RS received via the second antenna panel. At 806, the UE reduces at least one of the transmit power of the uplink RS or the function of the receiver based on the self-interference measurement. As will be described in more detail below, in some cases, reducing the transmit power may include partially reducing the transmit power of the uplink RS or turning off the transmit power. Similarly, reducing the receiver function may include partially reducing the receiver function (e.g., reducing the amplifier gain) or turning off the receiver function.

[0079] Figure 9 Example operations 900 for wireless communications by a network entity are illustrated and may be viewed as Figure 9 For example, operation 900 may be performed by the gNB to receive a signal from the UE (perform Figure 8 Operation 800 in FIG. 4 ), the signal indicates that the UE detected a condition associated with potential damage to the UE receiver during self-interference measurement.

[0080] Operations 900 begin at 902 by receiving an indication from a user equipment (UE) that the UE has detected a condition based on a self-interference measurement performed based on an uplink reference signal (RS) transmitted via a first antenna panel of the UE and received via a second antenna panel of the UE. At 904, in response to detecting the condition, a network entity signals the UE to reduce at least one of transmit power of the uplink RS or functionality of a receiver. As will be described in more detail below, in some cases, a network entity (e.g., a gNB) may signal a configuration of what action to take (e.g., whether to reduce transmit power, reduce receiver functionality, or both) when potential impairment is detected. In this case, as Figure 10A As shown, the UE can take action (immediately) upon detecting a condition indicating potential damage. Figure 10B As illustrated, the network entity may signal an indication to the UE of what action to take only after the UE sends a signal indicating that it has detected potential corruption.

[0081] Operations 800 and 900 can refer to Figure 10A and Figure 10B The call flow diagram can be used to understand.

[0082] First reference Figure 10A , showing that the UE is performing self-interference measurement (SIM) by transmitting UL RS via one antenna panel (marked as Tx) and measuring UL RS at another antenna panel (marked as Rx for reception).

[0083] As described above, the uplink RS can be used to measure the SIM at the UE and further used to select the top DL Rx and UL Tx beam pair as a candidate beam pair for full-duplex (synchronous UL / DL transmission) in FR2 transmission. The uplink RS may include a sounding reference signal (SRS), a demodulation reference signal (DMRS) for the physical uplink control channel (PUCCH) or the physical uplink shared channel (PUSCH), or at least one of the PUSCH or PUCCH.

[0084] In some cases, the UE may sense a pattern (or condition) that indicates possible damage to the UE receiver and take steps to avoid this pattern. As described above, if there is no indication of possible damage to the receiver, the UE may transmit the RS in multiple symbols, gradually increasing the transmit power in each symbol until full Tx power.

[0085] like Figure 10A As shown, if the UE does detect potential damage to the receiver, the UE can report the problem to the gNB. The UE can report the problem immediately (e.g., as soon as possible) to avoid damage. As shown, upon receiving the report, the gNB can indicate one or more actions that the UE should take in response. As described, example actions include reducing the RS's Tx power, completely turning off the RS's Tx power (reducing Tx power to zero), or using lower / reduced receiver functionality or turning off receiver functionality (e.g., lowering the automatic gain control setting or turning off the receiver completely).

[0086] like Figure 10B As shown, if a condition indicating potential damage to the UE receiver occurs suddenly, the UE may need to take action before reporting to the network entity. For example, given the potential severity of the situation, the UE may need to act (autonomously) in the middle of a slot or OFDM symbol. As in the above case, measures may include reducing the RS's Tx power, completely shutting down the RS's Tx power, and / or using reduced or disabled receiver functionality. In some cases, the UE may provide an indication of the action it has taken to the gNB (e.g., when reporting the detected condition or in a separate report).

[0087] If measures to mitigate or avoid damage to the UE receiver include reducing transmit power, the framework is similar to that used for Maximum Permissible Exposure (MPE). However, such a framework can be designed to protect the device itself rather than human tissue.

[0088] For example, while the conventional MPE framework uses a power control equation to determine the maximum power (Pcmax) allowed for a UE to transmit, similar equations and parameters (e.g., the parameter X-MPR used for UL-RS transmit power control) can be used for the self-interference measurement process based on the maximum power reduction (MPR) parameter. In other words, such a framework can provide separate parameters for human tissue and devices. As an alternative, the conventional MPE framework can be modified to add consideration of the MPR parameter related to SIM to ensure that the device is not damaged. In some cases, this mechanism may only be used for device protection on full-duplex OFDM symbols / timeslots.

[0089] In some cases, if the mitigation measure is to reduce receiver functionality or turn off the receiver, this may effectively be similar to beam blocking (e.g., for some other reason). However, in this case, the Rx settings can be deliberately adjusted to block the beam to protect the device.

[0090] On the transmitter side, the UE may not need to completely shut down the transmitter. Instead, the UE may just reduce its Tx power, for example by using the parameter X-MPR described above or reusing existing parameters (e.g. P-MPRc).

[0091] Similarly, on the receiver side, the UE may not need to completely shut down the receiver. Instead, the UE may only adjust the Rx settings so that reception does not behave as it normally would, for example, because the receiver will use a different AGC gain setting in a lower functionality mode to avoid being damaged by the transmit side.

[0092] In some cases, the UE may decide whether to apply mitigation on the transmitter side, the receiver side, or both. In some cases, this decision may be based on predefined rules in the standard specification. In some cases, this decision may be based on signaling dynamically indicated by the gNB, for example, via RRC / MAC-CE / DCI in the case of a full-duplex configuration. In either case, this decision may also take into account (or depend on) the priority of UL traffic relative to DL traffic (for example, UL URLLC traffic may have a higher priority) or the priority of the channel (e.g., control channel or data channel).

[0093] As mentioned above, reference Figure 10B In some cases, the UE can indicate back to the gNB what mitigation measures were performed. In some cases, this indication can be provided via modified or "enriched" Ack / Nack feedback. For example, in addition to signaling a conventional negative acknowledgement (Nack), the UE can indicate that the Nack was due to reduced receiver functionality (e.g., Rx off) rather than poor channel conditions.

[0094] In some cases, if the UL RS is an SRS and the mitigation measure is to transmit this SRS at a reduced Tx SRS power, this can be achieved using the existing SRS configuration (e.g., via P0 settings). In some cases, this can allow transparent operation, for example, by using a separate SRS resource set or having a new "SIM measurement" set used (e.g., in addition to the current codebook and non-codebook SRS set use). In some cases, such SRS may have its own independent closed loop (or disabled closed loop).

[0095] In some cases, for the Rx RS configuration, there may be a mode in which the Rx configuration is fully or partially implicitly derived from the Tx power in the Tx configuration. In this case, the UE may be able to amplify the calculated RS measurement value (such as RSRP or SINR) accordingly.

[0096] Figure 11 A communication device 1100 (eg, a UE) is illustrated, which may include devices configured to perform operations for the techniques disclosed herein (eg, Figure 8 1100 includes various components (e.g., corresponding to means plus functional components) for the operations shown. The communication device 1100 includes a processing system 1102 coupled to a transceiver 1108 (e.g., a transmitter and / or receiver). The transceiver 1108 is configured to transmit and receive signals for the communication device 1100, such as the various signals described herein, via an antenna 1110. The processing system 1102 can be configured to perform processing functions for the communication device 1100, including processing signals received and / or to be transmitted by the communication device 1100.

[0097] The processing system 1102 includes a processor 1104 coupled to a computer-readable medium / memory 1112 via a bus 1106. In some aspects, the computer-readable medium / memory 1112 is configured to store instructions (e.g., computer-executable code) that, when executed by the processor 1104, cause the processor 1104 to perform Figure 8The operations shown or other operations are used to perform various techniques discussed herein. In some aspects, the computer-readable medium / memory 1112 stores: code 1114 for transmitting an uplink reference signal (RS) via a first antenna panel; code 1116 for performing self-interference measurement based on an uplink RS received via a second antenna panel; and code 1118 for reducing at least one of the transmit power of the uplink RS or the functionality of the receiver based on the self-interference measurement. In some aspects, the processor 1104 has circuitry configured to implement the code stored in the computer-readable medium / memory 1112. The processor 1104 includes: circuitry 1118 for transmitting an uplink reference signal (RS) via a first antenna panel; circuitry 1120 for performing self-interference measurement based on an uplink RS received via a second antenna panel; and circuitry 1022 for reducing at least one of the transmit power of the uplink RS or the functionality of the receiver based on the self-interference measurement.

[0098] Figure 12 A communication device 1200 (e.g., a network entity such as a gNB) is shown, which may include components configured to perform operations for the techniques disclosed herein (e.g., Figure 9 12. The communication device 1200 includes various components (e.g., corresponding to means plus functional components) that perform the operations shown. The communication device 1200 includes a processing system 1202 coupled to a transceiver 1208 (e.g., a transmitter and / or receiver). The transceiver 1208 is configured to transmit and receive signals for the communication device 1200, such as the various signals described herein, via an antenna 1210. The processing system 1202 can be configured to perform processing functions for the communication device 1200, including processing signals received and / or to be transmitted by the communication device 1200.

[0099] The processing system 1202 includes a processor 1204 coupled to a computer-readable medium / memory 1212 via a bus 1206. In some aspects, the computer-readable medium / memory 1212 is configured to store instructions (e.g., computer-executable code) that, when executed by the processor 1204, cause the processor 1204 to perform Figure 9The operations shown or other operations for performing various techniques discussed herein. In certain aspects, computer-readable medium / memory 1212 stores: code 1214 for receiving from a user equipment (UE) an indication that the UE has detected a condition based on a self-interference measurement performed based on an uplink reference signal (RS) transmitted via a first antenna panel of the UE and received via a second antenna panel of the UE; and code 1216 for, in response to detecting the condition, signaling the UE to reduce at least one of the transmit power of the uplink RS or a function of a receiver. In certain aspects, processor 1204 has circuitry configured to implement the code stored in computer-readable medium / memory 1212. Processor 1204 includes circuitry 1222 for receiving from a user equipment (UE) an indication that the UE has detected a condition based on a self-interference measurement performed based on an uplink RS transmitted via a first antenna panel of the UE and received via a second antenna panel of the UE; and circuitry 1224 for, in response to detecting the condition, signaling the UE to reduce at least one of the transmit power of the uplink RS or a function of a receiver.

[0100] Exemplary Aspects

[0101] Implementation examples are described in the following numbered areas:

[0102] Aspect 1. An apparatus for wireless communication performed by a user equipment (UE), comprising: at least one processor and a memory, wherein the at least one processor and the memory are configured to: send an uplink reference signal (RS) via a first antenna panel; perform self-interference measurement based on the uplink RS received via a second antenna panel; and reduce the transmission power of the uplink RS or at least one of the functions of the receiver based on the self-interference measurement.

[0103] Aspect 2. An apparatus according to aspect 1, wherein the uplink RS includes a sounding reference signal (SRS), a demodulation reference signal (DMRS) for a physical uplink control channel (PUCCH), a DMRS for a physical uplink shared channel (PUSCH), at least one of PUSCH or PUCCH.

[0104] Aspect 3. The apparatus according to aspect 1 or 2, wherein the uplink RS is transmitted in multiple symbols; and when performing self-interference measurement, the transmission power of the uplink RS per symbol is increased.

[0105] Aspect 4. The apparatus according to any one of aspects 1-3, wherein at least one processor and memory are configured to reduce both transmit power and receiver functionality.

[0106] Aspect 5. The apparatus of any one of aspects 1-4, wherein the at least one processor and memory are further configured to provide an indication of a detected condition to a network entity based on the self-interference measurement.

[0107] Aspect 6. The apparatus according to aspect 5, wherein the at least one processor and memory are further configured to receive signaling from a network entity indicating that the UE will reduce at least one of the transmit power of the uplink RS or the functionality of the receiver based on the condition.

[0108] Aspect 7. The apparatus according to any one of aspects 5 or 6, wherein the indication further instructs the UE to reduce at least one of the transmission power of the uplink RS or the function of the receiver based on the condition.

[0109] Aspect 8. The apparatus according to any one of aspects 1 to 7, wherein at least one of the transmission power of the uplink RS or the function of the receiver is reduced in the middle or end of a time slot or an orthogonal frequency division modulation (OFDM) symbol.

[0110] Aspect 9. The apparatus according to any one of aspects 1-8, wherein at least one processor and memory are configured to reduce the transmission power of the uplink RS according to a power control equation.

[0111] Aspect 10. The apparatus according to aspect 9, wherein the power control equation is affected by at least one of a maximum power allowed to be transmitted by the UE during the self-interference measurement procedure; or a maximum power reduction (MPR) parameter used for the self-interference measurement procedure.

[0112] Aspect 11. The apparatus of any one of aspects 1-10, wherein the at least one processor and memory are configured to reduce the functionality of the receiver by adjusting an automatic gain control (AGC) setting.

[0113] Aspect 12. An apparatus according to any one of Aspects 1-11, wherein at least one processor and memory is further configured to decide whether to reduce the transmit power of the uplink RS, reduce the functionality of the receiver, or reduce both the transmit power of the uplink RS and the functionality of the receiver based on a predefined rule; or at least one of signaling from a network entity.

[0114] Aspect 13. The apparatus of aspect 12, wherein the signaling comprises at least one of radio resource control (RRC), medium access control (MAC) control element (CE), or downlink control information (DCI) signaling.

[0115] Aspect 14. The apparatus according to aspect 12, wherein the decision is further based on at least one of a priority of uplink traffic relative to downlink traffic; or a priority of a data channel relative to a control channel.

[0116] Aspect 15. The apparatus according to any one of aspects 1-14, wherein the at least one processor and memory are further configured to provide an indication to a network entity that the UE has reduced at least one of transmit power of an uplink RS or functionality of a receiver.

[0117] Aspect 16. The apparatus of aspect 15, wherein the indication is provided via negative acknowledgement feedback indicating that the negative acknowledgement is due to a reduced functionality or shutdown of the receiver.

[0118] Aspect 17. An apparatus according to any one of Aspects 1-16, wherein the uplink RS includes a sounding reference signal (SRS); and at least one processor and memory are configured to use at least one of a separately configured SRS resource set or an SRS source set configured for self-interference measurement.

[0119] Aspect 18. An apparatus according to any one of Aspects 1-17, wherein the at least one processor and memory are further configured to: derive a configuration for receiving an uplink RS based on a configuration for sending an uplink RS; and adjust uplink RS measurements based on the derived configuration.

[0120] Aspect 19. An apparatus for wireless communication performed by a network entity, comprising at least one processor and memory, the at least one processor and memory being configured to: receive an indication from a UE that the UE has detected a condition based on a self-interference measurement, the self-interference measurement being performed based on an uplink RS transmitted via a first antenna panel of the UE and simultaneously received via a second antenna panel of the UE; and in response to detecting the condition, signal the UE to reduce at least one of the transmit power of the uplink RS or the function of the receiver.

[0121] Aspect 20. The apparatus according to aspect 19, wherein the uplink RS comprises at least one of an SRS, a DMRS for a physical uplink control channel (PUCCH), a DMRS for a physical uplink shared channel (PUSCH), a PUSCH, or a PUCCH.

[0122] Aspect 21. The apparatus according to aspect 19 or 20, further comprising receiving signaling from the UE, the signaling instructing the UE to reduce at least one of the transmit power of the uplink RS or the functionality of the receiver in response to detecting the condition.

[0123] Aspect 22. The apparatus of aspect 21, wherein the indication is provided via negative acknowledgement feedback indicating that the negative acknowledgement is due to a reduction in functionality of the receiver.

[0124] Aspect 23. The apparatus according to aspect 21 or 22, wherein the UE reduces at least one of the transmit power of the uplink RS or the functionality of the receiver before providing an indication of the detection of the situation to the network entity.

[0125] Aspect 24: A method for wireless communication, comprising performing one or more of the operations described and according to any one of aspects 1-23.

[0126] Aspect 25: An apparatus comprising means for performing the method according to any one of aspects 1-23.

[0127] Aspect 26: A non-transitory computer-readable medium comprising executable instructions that, when executed by one or more processors of a device, cause the device to perform the method according to any one of aspects 1-23.

[0128] Aspect 27: A computer program product embodied on a computer-readable storage medium, comprising code for executing the method according to any one of aspects 1-23.

[0129] The methods disclosed herein include one or more steps or actions for implementing the methods. Method steps and / or actions may be interchangeable with one another without departing from the scope of the claims. In other words, unless a specific order of steps or actions is specified, the order and / or use of specific steps and / or actions may be modified without departing from the scope of the claims.

[0130] As used herein, a phrase referring to "at least one of" a list of items refers to any combination of those items, including single members. As an example, "at least one of a, b, or c" is intended to encompass a, b, c, ab, ac, bc, and abc, as well as any combination with multiples of the same element (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other order of a, b, and c).

[0131] As used herein, the term "determine" encompasses a wide variety of actions. For example, "determine" may include calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, database, or another data structure), ascertaining, etc. Furthermore, "determine" may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), etc. Furthermore, "determine" may include resolving, selecting, choosing, establishing, etc.

[0132] 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 apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. Thus, the claims are not intended to be limited to the various aspects shown herein, but should be given a full scope consistent with the language of the claims, wherein, unless expressly stated, elements mentioned in the singular are not intended to mean "one and only one", but "one or more". Unless otherwise expressly stated, the term "some" refers to one or more. All structural and functional equivalents of the elements throughout the various aspects described in this disclosure that are known or will be known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be covered by the claims. Moreover, regardless of whether the content disclosed herein is explicitly stated in the claims, it is not intended to be disclosed to the public. No claim element shall be interpreted under Section 112(f) of Chapter 35 of the United States Code unless the element is expressly stated with the phrase "means for..." or, in the case of a method claim, the element is stated with the phrase "step for..."

[0133] The various operations of the methods described above may be performed by any suitable component capable of performing the corresponding functions. The component may include various hardware and / or (multiple) software components and / or (multiple) modules, including but not limited to circuits, application specific integrated circuits (ASICs), or processors. For example, the processor controller / processor 280 of the UE 120 may be configured to perform Figure 8 Operation 800 in Figure 2 The controller / processor 240 of the BS 110 shown in FIG. 1 may be configured to perform Figure 9 Operation 900.

[0134] The components for receiving may include Figure 2 The receiver (such as one or more antennas or a receive processor) shown in FIG. The means for transmitting may include Figure 2 The transmitter (such as one or more antennas or a transmit processor) illustrated in FIG. The means for determining, the means for processing, the means for processing, and the means for applying may include a processing system that may include Figure 2 One or more processors of UE 120 and / or one or more processors of BS 110 are shown in FIG.

[0135] In some cases, a device may have an interface to output frames for transmission (means for outputting) rather than actually sending frames. For example, a processor may output frames to a radio frequency (RF) front end via a bus interface for transmission. Similarly, a device may have an interface to acquire frames received from another device (means for acquiring) rather than actually receiving frames. For example, a processor may acquire (or receive) frames from an RF front end via a bus interface for reception.

[0136] The various illustrative logic blocks, modules, and circuits described in conjunction with the present disclosure may be implemented or executed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device (PLD), discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. The general purpose processor may be a microprocessor, but as an alternative, the processor may be any commercially available processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration.

[0137] If implemented in hardware, an example hardware configuration may include a processing system in a wireless node. The processing system may be implemented using a bus architecture. Depending on the specific application and overall design constraints of the processing system, the bus may include any number of interconnecting buses and bridges. The bus may link together various circuits including a processor, a machine-readable medium, and a bus interface. Among other things, the bus interface may be used to connect a network adapter to the processing system via the bus. The network adapter may be used to implement signal processing functions at the PHY layer. In the user terminal 120 (see Figure 1 ), a user interface (e.g., keyboard, display, mouse, joystick, etc.) may also be connected to the bus. The bus may also link various other circuits such as timing sources, peripherals, voltage regulators, power management circuits, etc., which are well known in the art and therefore will not be described further. The processor may be implemented using one or more general and / or special purpose processors. Examples include microprocessors, microcontrollers, DSP processors, and other circuits that can execute software. Those skilled in the art will recognize how to best implement the functionality described for the processing system based on the specific application and the overall design constraints imposed on the entire system.

[0138] If implemented in software, the functionality may be stored on or transmitted via a computer-readable medium as one or more instructions or codes. Whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise, software should be broadly interpreted to mean instructions, data, or any combination thereof. Computer-readable media includes both computer storage media and communication media, including any medium that facilitates the delivery of a computer program from one location to another. The processor may be responsible for managing the bus and general processing, including the execution of software modules stored on the machine-readable storage medium. The computer-readable storage medium may be coupled to the processor so that the processor can read information from and write information to the storage medium. Alternatively, the storage medium may be integrated into the processor. For example, the machine-readable medium may include a transmission line, a carrier modulated by data, and / or a computer-readable storage medium on which instructions are stored separately from the wireless node, all of which can be accessed by the processor via a bus interface. Alternatively, or in addition, the machine-readable medium or any portion thereof may be integrated into the processor, such as may be the case with a cache and / or general register file. By way of example, examples of machine-readable storage media may include, for example, RAM (random access memory), flash memory, ROM (read-only memory), PROM (programmable read-only memory), EPROM (erasable programmable read-only memory), EEPROM (electrically erasable programmable read-only memory), registers, magnetic disks, optical disks, hard drives, or any other suitable storage media, or any combination thereof. The machine-readable medium may be included in a computer program product.

[0139] A software module may include a single instruction or multiple instructions and may be distributed across several different code segments, between different programs, and across multiple storage media. The computer-readable medium may include multiple software modules. A software module includes instructions that, when executed by a device such as a processor, cause a processing system to perform various functions. The software module may include a sending module and a receiving module. Each software module may reside in a single storage device or be distributed across multiple storage devices. By way of example, when a triggering event occurs, a software module may be loaded from a hard drive into RAM. During the execution of a software module, the processor may load some instructions into a cache to increase access speed. One or more cache lines may then be loaded into a general register file for execution by the processor. When referring to the functions of a software module below, it will be understood that such functions are implemented by the processor when executing instructions from the software module.

[0140] Moreover, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared (IR), radio, and microwave, then the definition of medium includes the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared (IR), radio, and microwave. Disk and disc, as used herein, include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk, and optical disc. Optical disks, where magnetic disks typically reproduce data magnetically, and optical disks reproduce data optically using lasers. Thus, in some aspects, computer-readable media may include non-transitory computer-readable media (e.g., tangible media). Furthermore, for other aspects, computer-readable media may include transitory computer-readable media (e.g., signals). Combinations of the above are also intended to be included within the scope of computer-readable media.

[0141] Thus, certain aspects may include a computer program product for performing the operations presented herein. For example, such a computer program product may include a computer-readable medium having stored (and / or encoded) thereon instructions that can be executed by one or more processors to perform the operations described herein. For example, for performing the operations described herein and Figures 8 and 9 Instructions for the operations illustrated in .

[0142] In addition, it should be understood that the modules and / or other suitable components for performing the methods and techniques described herein can be downloaded and / or otherwise obtained by the user terminal and / or base station when applicable. For example, such a device can be coupled to a server to facilitate the delivery of components for performing the methods described herein. Alternatively, the various methods described herein can be provided via a storage component (e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or a floppy disk, etc.) so that the user terminal and / or base station can obtain the various methods when the storage component is coupled or provided to the device. In addition, any other suitable technology for providing the methods and techniques described herein to the device can be utilized.

[0143] It should be understood that the present claims are not limited to the precise configuration and components described above, and that various modifications, changes and variations may be made in the arrangement, operation and details of the methods and apparatus described above without departing from the scope of the claims.

Claims

1. An apparatus for wireless communication performed by a user equipment (UE), comprising: at least one processor and memory configured to cause the apparatus to: transmitting an uplink reference signal RS via the first antenna panel; performing self-interference measurement based on the uplink RS received via the second antenna panel; as well as Based on the self-interference measurement and based on at least one of a priority of uplink traffic relative to downlink traffic or a priority of data channels relative to control channels, both the transmit power of the uplink RS and the functionality of the receiver are reduced. 2 . The apparatus according to claim 1 , wherein the uplink RS comprises at least one of a sounding reference signal (SRS), a demodulation reference signal (DMRS) for a physical uplink control channel (PUCCH), or a DMRS for a physical uplink shared channel (PUSCH).

3. The apparatus of claim 1 , wherein the at least one processor and memory are further configured to cause the apparatus to: transmitting the uplink RS in a plurality of symbols; and During the self-interference measurement, the transmission power of the uplink RS per symbol is increased. 4 . The apparatus of claim 1 , wherein the at least one processor and memory are further configured to cause the apparatus to provide an indication of a detected condition to a network entity based on the self-interference measurement.

5. The apparatus of claim 4, wherein the at least one processor and memory are further configured to cause the apparatus to: Signaling is received from the network entity, the signaling indicating that the UE is to reduce at least one of the transmit power of the uplink RS or the functionality of the receiver based on the condition. 6 . The apparatus of claim 4 , wherein the indication further instructs the UE to reduce both the transmission power of the uplink RS and the functionality of the receiver based on the condition.

7. The apparatus according to claim 1, wherein the at least one processor and memory are further configured to cause the apparatus to: reduce the transmission power of the uplink RS or the function of the receiver in the middle or end of a time slot or an orthogonal frequency division modulation (OFDM) symbol.

8. The apparatus of claim 1, wherein the at least one processor and memory are configured to cause the apparatus to: reduce the transmission power of the uplink RS according to a power control equation.

9. The apparatus of claim 8, wherein the power control equation is affected by at least one of: the maximum power that the UE is allowed to transmit during self-interference measurement; or Maximum Power Reduction (MPR) parameter used for the self-interference measurement.

10. The apparatus of claim 1, wherein the at least one processor and memory are configured to cause the apparatus to reduce functionality of the receiver by adjusting an automatic gain control (AGC) setting.

11. The apparatus of claim 1 , wherein the at least one processor and memory are further configured to cause the apparatus to decide whether to reduce the transmit power of the uplink RS, reduce the functionality of the receiver, or reduce both the transmit power of the uplink RS and the functionality of the receiver based on at least one of the following: predefined rules; or Signaling from network entities. 12 . The apparatus according to claim 11 , wherein the signaling comprises at least one of radio resource control (RRC), medium access control (MAC) control element (CE), or downlink control information (DCI) signaling.

13. The apparatus of claim 1, wherein the at least one processor and memory are further configured to cause the apparatus to provide an indication to a network entity that the UE has reduced both transmit power of the uplink RS and functionality of the receiver.

14. The apparatus of claim 13, wherein the at least one processor and memory are further configured to cause the apparatus to provide the indication via negative acknowledgement feedback, the negative acknowledgement feedback indicating that the negative acknowledgement is due to a reduced functionality or shutdown of the receiver.

15. The apparatus according to claim 1, wherein: The uplink RS includes a sounding reference signal SRS; and The at least one processor and memory are further configured to cause the apparatus to utilize at least one of an individually configured set of SRS resources or a set of SRS sources configured for self-interference measurement.

16. The apparatus of claim 1 , wherein the at least one processor and memory are further configured to cause the apparatus to: deriving a configuration for receiving the uplink RS based on the configuration for sending the uplink RS; and The uplink RS measurements are adjusted based on the derived configuration.

17. A method for wireless communication performed by a user equipment (UE), comprising: transmitting an uplink reference signal RS via the first antenna panel; performing self-interference measurement based on the uplink RS received via the second antenna panel; as well as Based on the self-interference measurement and based on at least one of a priority of uplink traffic relative to downlink traffic or a priority of data channels relative to control channels, both the transmit power of the uplink RS and the functionality of the receiver are reduced. 18 . The method according to claim 17 , wherein the uplink RS comprises at least one of a sounding reference signal (SRS) or a demodulation reference signal (DMRS) for a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH).

19. The method of claim 17, further comprising providing an indication of a detected condition to a network entity based on the self-interference measurement.

20. The method according to claim 19, further comprising: Signaling is received from the network entity, the signaling indicating that the UE is to reduce at least one of the transmit power of the uplink RS or the functionality of the receiver based on the condition.

21. The method according to claim 17, wherein the transmission power of the uplink RS is reduced according to a power control equation.

22. An apparatus for wireless communication performed by a user equipment (UE), comprising: means for transmitting an uplink reference signal RS via the first antenna panel; means for performing self-interference measurements based on the uplink RS received via the second antenna panel; as well as Means for reducing both transmit power of the uplink RS and receiver functionality based on the self-interference measurement and based on at least one of a priority of uplink traffic relative to downlink traffic or a priority of data channels relative to control channels.

23. A computer-readable medium having instructions stored thereon, which, when executed by one or more processors in a user equipment (UE), cause the UE to perform the method according to any one of claims 17 to 21.

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